Dear Friends here is a Presentation on , variety of Pumps , for many Industrial applications.
pumps allow us to transport Viscous Fluids, Adhesives, even Hot melts with great ease.
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Pump, its types and applications presentationziaul islam
This document discusses different types of pumps. It begins by defining a pump as a machine that converts mechanical energy into fluid energy by moving fluid from a region of low pressure to one of high pressure. There are two main types of pumps: positive displacement pumps and rotodynamic pumps. Positive displacement pumps work by trapping a fixed amount of fluid and forcing it into the discharge pipe. Rotodynamic pumps use rotational kinetic energy to increase the fluid's hydrodynamic energy. The document then discusses various sub-types of positive displacement pumps like gear pumps, screw pumps, and reciprocating pumps. It also covers different rotodynamic pump types such as centrifugal pumps, axial pumps, mixed-flow pumps, and turbine pumps. The document
Pumps are mechanical devices that use prime mover energy to move fluids from one place to another. Positive displacement pumps apply pressure directly to the liquid using reciprocating or rotating components. The main types of positive displacement pumps are reciprocating pumps like piston pumps and diaphragm pumps, and rotary pumps like gear pumps. Reciprocating piston pumps use oscillating pistons to move fluid, and can be single or multi-cylinder designs. Axial and radial piston pumps use rotating cylinders to pump fluid. Diaphragm pumps use a reciprocating rubber diaphragm and check valves to pump fluid on each stroke. Positive displacement pumps are suitable for high-pressure applications and handling viscous or abrasive fluids.
Mechanical seals are used to prevent leakage between a rotating pump shaft and casing. They have two flat surfaces, one rotating with the shaft and one stationary. Proper selection of seal type, materials, and cooling method is important for long seal life. The main types are single or multi-spring seals, bellow seals, and seals that are balanced or unbalanced. Factors like pressure, temperature, fluid properties, and available space must be considered.
Pumps are mechanical devices that use external power to transfer fluids from one point to another. There are two main types of pumps: positive displacement pumps and rotodynamic pumps. Positive displacement pumps include reciprocating pumps, rotary lobe pumps, progressing cavity pumps, piston/plunger pumps, dosing pumps, and vacuum pumps. Rotodynamic pumps include centrifugal pumps. Each pump type has different characteristics that make it suitable for various fluid transfer applications.
Design and Analysis of Pendulum Operated Piston PumpArka Dutta
This document describes the design and analysis of a pendulum operated piston pump. It discusses the components of the pump including the pump, spring, roller bearing, and non-return valves. The pump uses the oscillating motion of a pendulum to power a piston that pumps water, requiring less human effort than traditional hand pumps. It explains that the pendulum's motion is transferred through a lever system to the piston, with the oscillation maintained by occasionally pushing the pendulum.
the presentation includes basic ideas about water pumps, various terminology generally used for the pumps, classification of pumps and ideas about the types its construction and working
Positive displacement pumps move fluids by trapping a fixed volume and forcing that volume from the suction to discharge side. Reciprocating pumps, like piston pumps, use reciprocating motion powered by engines while rotary pumps use rotating components like gears or lobes. Piston pumps have two check valves and a reciprocating piston powered by translating rotary motion into linear motion. They can be direct or indirect acting, simplex or duplex, and single or double acting. Diaphragm pumps use a flexible diaphragm instead of pistons. Rotary pumps have gears, lobes, screws, cams, or vanes that rotate to trap and move fluid and include gear, lobe, screw, vane, and cam pumps
Rotodynamic pumps can be axial flow, mixed flow, or centrifugal. Axial and mixed flow pumps are commonly used for high-volume, low-pressure applications like water supplies, flood control, and irrigation. They generate head pressure through axial, radial, or a combination of motions. Mixed flow pumps produce greater head pressure than axial pumps alone.
Pump, its types and applications presentationziaul islam
This document discusses different types of pumps. It begins by defining a pump as a machine that converts mechanical energy into fluid energy by moving fluid from a region of low pressure to one of high pressure. There are two main types of pumps: positive displacement pumps and rotodynamic pumps. Positive displacement pumps work by trapping a fixed amount of fluid and forcing it into the discharge pipe. Rotodynamic pumps use rotational kinetic energy to increase the fluid's hydrodynamic energy. The document then discusses various sub-types of positive displacement pumps like gear pumps, screw pumps, and reciprocating pumps. It also covers different rotodynamic pump types such as centrifugal pumps, axial pumps, mixed-flow pumps, and turbine pumps. The document
Pumps are mechanical devices that use prime mover energy to move fluids from one place to another. Positive displacement pumps apply pressure directly to the liquid using reciprocating or rotating components. The main types of positive displacement pumps are reciprocating pumps like piston pumps and diaphragm pumps, and rotary pumps like gear pumps. Reciprocating piston pumps use oscillating pistons to move fluid, and can be single or multi-cylinder designs. Axial and radial piston pumps use rotating cylinders to pump fluid. Diaphragm pumps use a reciprocating rubber diaphragm and check valves to pump fluid on each stroke. Positive displacement pumps are suitable for high-pressure applications and handling viscous or abrasive fluids.
Mechanical seals are used to prevent leakage between a rotating pump shaft and casing. They have two flat surfaces, one rotating with the shaft and one stationary. Proper selection of seal type, materials, and cooling method is important for long seal life. The main types are single or multi-spring seals, bellow seals, and seals that are balanced or unbalanced. Factors like pressure, temperature, fluid properties, and available space must be considered.
Pumps are mechanical devices that use external power to transfer fluids from one point to another. There are two main types of pumps: positive displacement pumps and rotodynamic pumps. Positive displacement pumps include reciprocating pumps, rotary lobe pumps, progressing cavity pumps, piston/plunger pumps, dosing pumps, and vacuum pumps. Rotodynamic pumps include centrifugal pumps. Each pump type has different characteristics that make it suitable for various fluid transfer applications.
Design and Analysis of Pendulum Operated Piston PumpArka Dutta
This document describes the design and analysis of a pendulum operated piston pump. It discusses the components of the pump including the pump, spring, roller bearing, and non-return valves. The pump uses the oscillating motion of a pendulum to power a piston that pumps water, requiring less human effort than traditional hand pumps. It explains that the pendulum's motion is transferred through a lever system to the piston, with the oscillation maintained by occasionally pushing the pendulum.
the presentation includes basic ideas about water pumps, various terminology generally used for the pumps, classification of pumps and ideas about the types its construction and working
Positive displacement pumps move fluids by trapping a fixed volume and forcing that volume from the suction to discharge side. Reciprocating pumps, like piston pumps, use reciprocating motion powered by engines while rotary pumps use rotating components like gears or lobes. Piston pumps have two check valves and a reciprocating piston powered by translating rotary motion into linear motion. They can be direct or indirect acting, simplex or duplex, and single or double acting. Diaphragm pumps use a flexible diaphragm instead of pistons. Rotary pumps have gears, lobes, screws, cams, or vanes that rotate to trap and move fluid and include gear, lobe, screw, vane, and cam pumps
Rotodynamic pumps can be axial flow, mixed flow, or centrifugal. Axial and mixed flow pumps are commonly used for high-volume, low-pressure applications like water supplies, flood control, and irrigation. They generate head pressure through axial, radial, or a combination of motions. Mixed flow pumps produce greater head pressure than axial pumps alone.
This document discusses different types of pumps, including their classifications, characteristics, applications, and performance. It describes hydrodynamic/non-positive displacement pumps, which use flow to transfer fluid at relatively low pressure and are generally used for low pressure, high volume applications. It also describes hydrostatic/positive displacement pumps, which have close-fitting components and can create high pressures, making them self-priming. Specific positive displacement pump types like gear, vane, piston and centrifugal pumps are examined in terms of their applications and operating principles. Pump efficiencies including volumetric, mechanical and overall efficiency are also covered.
Centrifugal pumps are rotodynamic pumps that use a rotating impeller to increase the pressure of a liquid. The impeller spins and throws liquid outward via centrifugal force, increasing pressure. Key parts include the impeller, casing, suction and delivery pipes. Centrifugal pumps are classified based on impeller shape, working head, number of stages, flow direction, and number of suctions. They work by converting the kinetic energy of the liquid into pressure energy. The minimum speed required for startup depends on the manometric head. Cavitation can occur if the pressure drops below vapor pressure, forming bubbles that collapse and damage surfaces.
This document provides an overview of centrifugal pumps. It defines a pump and discusses the main components and classifications of centrifugal pumps. The key components of a centrifugal pump are the impeller, casing, suction pipe, and delivery pipe. Centrifugal pumps are classified based on impeller design and casing shape. The document also covers topics such as work done by the centrifugal pump, head of a pump, losses and efficiencies, and minimum speed for starting a centrifugal pump. Several example problems are provided to calculate values like inlet vane angle, work done, and minimum starting speed.
Accumulators store hydraulic energy and make it available on demand to hydraulic systems. They are suitable for hydraulic shock suppression, eliminating pressure ripple, fluid make up in closed circuits, leakage compensation, and providing emergency power during power failures or for holding high pressure without the pump running. Accumulators are often used for flow compensation to meet additional hydraulic demands beyond the pump output, maintaining specific pressures during machine cycles, compensating for energy losses due to leakage or pressure drops, and suppressing shocks in high pressure systems. The type of accumulator chosen depends on factors like mounting position, temperature requirements, and failure risk.
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Pump - Wikipediaen.wikipedia.org › wiki › Pump
A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into Hydraulic energy. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps.
Basics of centrifugal. Topics covered are operating principles, energy conversion, components in centrifugal pump, the concept of NPSH, pump rating calculation and affinity laws
The document discusses different types of pumps. It defines a pump as a device that moves fluids through mechanical action. It then discusses where pumps are used, such as in factories, offices, homes, and power plants. The document classifies pumps based on their power source, either electrical or mechanical. It focuses on centrifugal pumps, describing their parts and working principle of using centrifugal force to pump fluid from the center to the outside of a circle. Advantages and disadvantages of centrifugal pumps are provided. Reciprocating and rotary pumps are also described along with their parts, types, advantages and disadvantages. The document concludes with discussing pump performance curves and defining pump efficiency.
This presentation discusses vane pumps. A vane pump is a positive displacement rotary pump that uses sliding vanes mounted on a rotor to pump fluids. As the rotor turns, the vanes slide in and out to create sealed chambers that draw fluid in during intake and push it out during discharge. Vane pumps can be single, double, or triple vane and are used to pump thin liquids and gases at moderate pressures in various industrial applications such as aerosols, aviation fuel transfer, auto fuels and lubricants, LPG transfer, refrigerants, solvents, and aqueous solutions.
A pump is a mechanical device that transfers rotational energy to liquid to move it from one place to another. There are two main types of pumps: dynamic and positive displacement. A reciprocating pump is a type of positive displacement pump that uses a piston or plunger to trap and move liquid. A rotary pump also positively displaces liquid but does so continuously rather than reciprocating. A centrifugal pump is a type of dynamic pump that uses a rotating impeller to accelerate liquid and convert kinetic energy to pressure energy to move the liquid.
Basics Fundamentals and working Principle of Centrifugal Pump.SHASHI BHUSHAN
Basics Fundamentals and working Principle of Centrifugal Pump. Centrifugal pumps are the rotodynamic machines that convert mechanical energy of shaft into kinetic and pressure energy of Fluid which may be used to raise the level of fluid. A centrifugal pump is named so, because the energy added by the impeller to the fluid is largely due to centrifugal effects.
This project document describes the design, installation, and testing of a reciprocating pump. A team of engineering students constructed a demonstration pump facility under the guidance of Dr. Manoj Kumar Barai. The document outlines the objectives, classification, construction details, drawings, working principle, performance parameters, material selection, maintenance requirements, installation process, discharge calculations, characteristics, efficiencies, advantages, disadvantages, and applications of reciprocating pumps. References are provided at the end.
Centrifugal pumps are dynamic machines that use centrifugal force to convert rotational kinetic energy to hydrodynamic energy. They have many applications including water supply and drainage. Key components include an impeller, casing, shaft, and diffuser. The impeller rotates and imparts kinetic energy on the fluid, increasing pressure and flow towards the outlet. Cavitation can occur if pressure drops too low and vapor bubbles form, undermining efficiency. Centrifugal pumps come in various types defined by factors like number of stages, impeller design, and position of inlets and outlets.
Centrifugal pumps work by using an impeller to increase the velocity and kinetic energy of a fluid. This increase in kinetic energy is then converted to pressure energy as the fluid passes through a volute casing, increasing the pressure. Centrifugal pumps have major components including a shaft, impeller, and volute casing. Radial pumps produce high pressure but low flow, while axial pumps operate at lower pressures but higher flow rates than radial pumps. Centrifugal pumps require priming to fill the impeller with liquid before startup.
This document provides information on various types of pumps used in hydraulic systems. It discusses the basic classifications of pumps as either positive displacement pumps or non-positive displacement pumps. Positive displacement pumps deliver a fixed volume of fluid per cycle, while non-positive displacement pumps output depends on resistance. Common positive displacement pump types described include gear pumps, vane pumps, piston pumps, and lobe pumps. Operating characteristics, advantages/disadvantages, and examples of different pump designs are provided. Factors that affect pump performance and potential problems that can occur are also summarized.
This Presentation is about working principle of Pumps.Basic Presentation regarding pumps , will definitely help beginners to learn pump types , their working , their parts etc.
This document discusses cavitation in centrifugal pumps. It defines cavitation as the formation of vapor bubbles when liquid pressure drops below vapor pressure. Cavitation can cause damage, noise, vibration and efficiency losses in pumps. To avoid cavitation, the pump inlet pressure must exceed the net positive suction head required by the pump. Proper pump submergence, suction piping design and avoidance of air in the line can also prevent cavitation. Cavitation reduces pump head and efficiency according to the specific speed of the pump. Higher specific speed pumps are less susceptible to cavitation issues.
Cavitation occurs in liquid systems when the local pressure drops below the vapor pressure of the liquid, causing the formation of vapor bubbles. These bubbles can collapse violently on surfaces when pressure increases, causing damage known as cavitation erosion. Cavitation is a concern for devices handling liquids like pumps, propellers, and high pressure die casting dies. It commonly occurs where flow direction changes or obstructions create pressure variations, generating sheet or vortex cavitation that can degrade surfaces over time through the collapsing bubble impacts. Methods to reduce cavitation include design modifications to flows, operation adjustments, and surface treatments to buffer the impacts.
The document describes the key components of a hydraulic circuit: 1) a hydraulic pump that pumps oil from the reservoir and has a fixed or variable displacement, 2) a filter that cleans the oil, 3) a pressure relief valve that controls pressure, 4) a check valve that allows one-way flow, 5) a hydraulic reservoir that stores fluid, 6) a directional control valve that controls fluid flow, and 7) a hydraulic cylinder that converts hydraulic power into mechanical force. It also briefly mentions types of hydraulic circuits.
The document provides information about pumps, including:
1) Pumps are mechanical devices that use rotation or reciprocation to move fluid from one place to another by converting energy into hydraulic energy.
2) The main purposes of pumps are to transfer fluid from low to high pressure areas, from low to high elevations, and from local to distant locations.
3) There are two main types of pumps - positive displacement pumps which move a fixed volume of fluid with each cycle, and centrifugal pumps which use centrifugal force to move fluid by spinning an impeller.
Pumps are devices that use mechanical energy to increase the velocity, pressure, or elevation of liquids and gases. There are two main types of pumps: positive displacement pumps and dynamic pumps. Positive displacement pumps apply direct pressure on a liquid using a reciprocating piston or rotating components. Dynamic pumps use centrifugal force to generate high rotational velocities and convert the kinetic energy of liquids into pressure energy. Common positive displacement pump types include piston pumps, plunger pumps, and diaphragm pumps. Common dynamic pump types include centrifugal pumps which contain an impeller and casing. Proper consideration of factors like net positive suction head are important for pump selection and operation.
Gear pumps use meshing gears to pump fluids through displacement. There are two main types: external gear pumps which use two external spur gears, and internal gear pumps which use one external and one internal spur gear. Gear pumps are positive displacement pumps that pump a constant volume of fluid per revolution. External gear pumps are commonly used for lubrication and fuel transfer and internal gear pumps can handle high viscosity fluids like asphalt or chocolate. Both have advantages like precision and constant output, but also limitations like fixed flow rates and moderate pressure ranges.
This document discusses different types of pumps, including their classifications, characteristics, applications, and performance. It describes hydrodynamic/non-positive displacement pumps, which use flow to transfer fluid at relatively low pressure and are generally used for low pressure, high volume applications. It also describes hydrostatic/positive displacement pumps, which have close-fitting components and can create high pressures, making them self-priming. Specific positive displacement pump types like gear, vane, piston and centrifugal pumps are examined in terms of their applications and operating principles. Pump efficiencies including volumetric, mechanical and overall efficiency are also covered.
Centrifugal pumps are rotodynamic pumps that use a rotating impeller to increase the pressure of a liquid. The impeller spins and throws liquid outward via centrifugal force, increasing pressure. Key parts include the impeller, casing, suction and delivery pipes. Centrifugal pumps are classified based on impeller shape, working head, number of stages, flow direction, and number of suctions. They work by converting the kinetic energy of the liquid into pressure energy. The minimum speed required for startup depends on the manometric head. Cavitation can occur if the pressure drops below vapor pressure, forming bubbles that collapse and damage surfaces.
This document provides an overview of centrifugal pumps. It defines a pump and discusses the main components and classifications of centrifugal pumps. The key components of a centrifugal pump are the impeller, casing, suction pipe, and delivery pipe. Centrifugal pumps are classified based on impeller design and casing shape. The document also covers topics such as work done by the centrifugal pump, head of a pump, losses and efficiencies, and minimum speed for starting a centrifugal pump. Several example problems are provided to calculate values like inlet vane angle, work done, and minimum starting speed.
Accumulators store hydraulic energy and make it available on demand to hydraulic systems. They are suitable for hydraulic shock suppression, eliminating pressure ripple, fluid make up in closed circuits, leakage compensation, and providing emergency power during power failures or for holding high pressure without the pump running. Accumulators are often used for flow compensation to meet additional hydraulic demands beyond the pump output, maintaining specific pressures during machine cycles, compensating for energy losses due to leakage or pressure drops, and suppressing shocks in high pressure systems. The type of accumulator chosen depends on factors like mounting position, temperature requirements, and failure risk.
Search Results
Web results
Pump - Wikipediaen.wikipedia.org › wiki › Pump
A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into Hydraulic energy. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps.
Basics of centrifugal. Topics covered are operating principles, energy conversion, components in centrifugal pump, the concept of NPSH, pump rating calculation and affinity laws
The document discusses different types of pumps. It defines a pump as a device that moves fluids through mechanical action. It then discusses where pumps are used, such as in factories, offices, homes, and power plants. The document classifies pumps based on their power source, either electrical or mechanical. It focuses on centrifugal pumps, describing their parts and working principle of using centrifugal force to pump fluid from the center to the outside of a circle. Advantages and disadvantages of centrifugal pumps are provided. Reciprocating and rotary pumps are also described along with their parts, types, advantages and disadvantages. The document concludes with discussing pump performance curves and defining pump efficiency.
This presentation discusses vane pumps. A vane pump is a positive displacement rotary pump that uses sliding vanes mounted on a rotor to pump fluids. As the rotor turns, the vanes slide in and out to create sealed chambers that draw fluid in during intake and push it out during discharge. Vane pumps can be single, double, or triple vane and are used to pump thin liquids and gases at moderate pressures in various industrial applications such as aerosols, aviation fuel transfer, auto fuels and lubricants, LPG transfer, refrigerants, solvents, and aqueous solutions.
A pump is a mechanical device that transfers rotational energy to liquid to move it from one place to another. There are two main types of pumps: dynamic and positive displacement. A reciprocating pump is a type of positive displacement pump that uses a piston or plunger to trap and move liquid. A rotary pump also positively displaces liquid but does so continuously rather than reciprocating. A centrifugal pump is a type of dynamic pump that uses a rotating impeller to accelerate liquid and convert kinetic energy to pressure energy to move the liquid.
Basics Fundamentals and working Principle of Centrifugal Pump.SHASHI BHUSHAN
Basics Fundamentals and working Principle of Centrifugal Pump. Centrifugal pumps are the rotodynamic machines that convert mechanical energy of shaft into kinetic and pressure energy of Fluid which may be used to raise the level of fluid. A centrifugal pump is named so, because the energy added by the impeller to the fluid is largely due to centrifugal effects.
This project document describes the design, installation, and testing of a reciprocating pump. A team of engineering students constructed a demonstration pump facility under the guidance of Dr. Manoj Kumar Barai. The document outlines the objectives, classification, construction details, drawings, working principle, performance parameters, material selection, maintenance requirements, installation process, discharge calculations, characteristics, efficiencies, advantages, disadvantages, and applications of reciprocating pumps. References are provided at the end.
Centrifugal pumps are dynamic machines that use centrifugal force to convert rotational kinetic energy to hydrodynamic energy. They have many applications including water supply and drainage. Key components include an impeller, casing, shaft, and diffuser. The impeller rotates and imparts kinetic energy on the fluid, increasing pressure and flow towards the outlet. Cavitation can occur if pressure drops too low and vapor bubbles form, undermining efficiency. Centrifugal pumps come in various types defined by factors like number of stages, impeller design, and position of inlets and outlets.
Centrifugal pumps work by using an impeller to increase the velocity and kinetic energy of a fluid. This increase in kinetic energy is then converted to pressure energy as the fluid passes through a volute casing, increasing the pressure. Centrifugal pumps have major components including a shaft, impeller, and volute casing. Radial pumps produce high pressure but low flow, while axial pumps operate at lower pressures but higher flow rates than radial pumps. Centrifugal pumps require priming to fill the impeller with liquid before startup.
This document provides information on various types of pumps used in hydraulic systems. It discusses the basic classifications of pumps as either positive displacement pumps or non-positive displacement pumps. Positive displacement pumps deliver a fixed volume of fluid per cycle, while non-positive displacement pumps output depends on resistance. Common positive displacement pump types described include gear pumps, vane pumps, piston pumps, and lobe pumps. Operating characteristics, advantages/disadvantages, and examples of different pump designs are provided. Factors that affect pump performance and potential problems that can occur are also summarized.
This Presentation is about working principle of Pumps.Basic Presentation regarding pumps , will definitely help beginners to learn pump types , their working , their parts etc.
This document discusses cavitation in centrifugal pumps. It defines cavitation as the formation of vapor bubbles when liquid pressure drops below vapor pressure. Cavitation can cause damage, noise, vibration and efficiency losses in pumps. To avoid cavitation, the pump inlet pressure must exceed the net positive suction head required by the pump. Proper pump submergence, suction piping design and avoidance of air in the line can also prevent cavitation. Cavitation reduces pump head and efficiency according to the specific speed of the pump. Higher specific speed pumps are less susceptible to cavitation issues.
Cavitation occurs in liquid systems when the local pressure drops below the vapor pressure of the liquid, causing the formation of vapor bubbles. These bubbles can collapse violently on surfaces when pressure increases, causing damage known as cavitation erosion. Cavitation is a concern for devices handling liquids like pumps, propellers, and high pressure die casting dies. It commonly occurs where flow direction changes or obstructions create pressure variations, generating sheet or vortex cavitation that can degrade surfaces over time through the collapsing bubble impacts. Methods to reduce cavitation include design modifications to flows, operation adjustments, and surface treatments to buffer the impacts.
The document describes the key components of a hydraulic circuit: 1) a hydraulic pump that pumps oil from the reservoir and has a fixed or variable displacement, 2) a filter that cleans the oil, 3) a pressure relief valve that controls pressure, 4) a check valve that allows one-way flow, 5) a hydraulic reservoir that stores fluid, 6) a directional control valve that controls fluid flow, and 7) a hydraulic cylinder that converts hydraulic power into mechanical force. It also briefly mentions types of hydraulic circuits.
The document provides information about pumps, including:
1) Pumps are mechanical devices that use rotation or reciprocation to move fluid from one place to another by converting energy into hydraulic energy.
2) The main purposes of pumps are to transfer fluid from low to high pressure areas, from low to high elevations, and from local to distant locations.
3) There are two main types of pumps - positive displacement pumps which move a fixed volume of fluid with each cycle, and centrifugal pumps which use centrifugal force to move fluid by spinning an impeller.
Pumps are devices that use mechanical energy to increase the velocity, pressure, or elevation of liquids and gases. There are two main types of pumps: positive displacement pumps and dynamic pumps. Positive displacement pumps apply direct pressure on a liquid using a reciprocating piston or rotating components. Dynamic pumps use centrifugal force to generate high rotational velocities and convert the kinetic energy of liquids into pressure energy. Common positive displacement pump types include piston pumps, plunger pumps, and diaphragm pumps. Common dynamic pump types include centrifugal pumps which contain an impeller and casing. Proper consideration of factors like net positive suction head are important for pump selection and operation.
Gear pumps use meshing gears to pump fluids through displacement. There are two main types: external gear pumps which use two external spur gears, and internal gear pumps which use one external and one internal spur gear. Gear pumps are positive displacement pumps that pump a constant volume of fluid per revolution. External gear pumps are commonly used for lubrication and fuel transfer and internal gear pumps can handle high viscosity fluids like asphalt or chocolate. Both have advantages like precision and constant output, but also limitations like fixed flow rates and moderate pressure ranges.
The document discusses different types of pumps used in fluid transport systems. It describes positive displacement pumps which use a fixed volume cavity to trap and transport fluid with each cycle. Dynamic pumps are also discussed, which add momentum to fluid without a fixed volume. Centrifugal pumps are described in detail, with their construction, working principle, performance parameters and efficiency calculations explained. The key aspects covered are the use of impellers to impart energy and velocity to fluid which is then converted to pressure by the volute casing.
Wireless Infusion Pumps: Securing Hospitals’ Most Ubiquitous Medical DevicePriyanka Aash
This document discusses securing wireless infusion pumps in hospitals. It identifies risks like patient safety and operational downtime. Vulnerabilities of infusion pumps include long useful lifespans, poor protection and patching, and lack of detection and alerting. Demonstrations show how pumps could be exploited by compromising patient information or crashing communication systems. Challenges to securing pumps include firmware version control, access control, and alarms. The National Cybersecurity Center of Excellence's strategy is to help healthcare organizations understand risks and secure medical devices through building example implementations and publishing best practice guides.
A syringe pump is a small infusion pump that gradually administers fluids or medications to patients using syringes. It can perform infusion only or infusion and withdrawal by pushing or pulling the syringe plunger. Syringe pumps are used in medical settings like ICUs and operating rooms to precisely deliver drugs and fluids. They offer adjustable flow rates and pressures using interchangeable syringes. Safety features must ensure electrical isolation from patients and comprehensive self-testing to prevent faults.
This document discusses different types of hydraulic pumps, including their basic operating principles and comparisons. It provides equations to calculate pump parameters such as theoretical flow rate, volumetric displacement, efficiency, and torque. For example, it defines that positive displacement pumps capture and transfer fixed amounts of fluid, while centrifugal pumps impart velocity to fluid to create pressure. Gear pump displacement can be calculated based on gear dimensions. Pump efficiency is affected by factors like leakage and viscosity.
This document provides an introduction to different types of pumping equipment, including their principles of operation and categories. It discusses the main differences between rotodynamic pumps (like centrifugal pumps) and positive displacement pumps (like reciprocating and rotary pumps). Centrifugal pumps are best for medium to high flow rates and low to medium pressures, while positive displacement pumps can achieve very high pressures or handle low flows. The document also compares characteristics like flow patterns, pressure capabilities, cost considerations, and fluid handling for different pump categories.
The document discusses centrifugal pumps. It describes how centrifugal pumps work by converting mechanical energy to hydraulic energy using centrifugal force. They work on the principle of forced vortex flow. Key components include an impeller that rotates and accelerates the fluid outward, and a casing that captures the fluid and converts its kinetic energy to pressure. Centrifugal pumps are used to pump liquids like water, sewage, petroleum and more. Performance curves are used to predict pump behavior under different operating conditions.
The document describes the McKinley T34 syringe pump. It has advantages like single model configuration to avoid confusion, 3-point syringe detection for secure placement, automatic calculation functions, and an LCD screen with instructions. The document outlines the syringe pump setup process which involves loading the syringe, priming tubing, confirming placement, and starting the infusion. It recommends checking the pump and display during infusion to ensure proper delivery.
The document summarizes a student experiment dissecting a syringe pump. The student disassembled the pump into its core components to study its design and functioning. Key parts of the pump identified include the power supply, printed circuit boards, stepper motor, lead screw and syringe holder. Diagrams of the pump's product architecture and function structure are provided. The student concludes the dissection process provided valuable hands-on learning of the pump's design through reverse engineering.
Pumps add energy to liquids or gases, increasing their pressure and enabling movement. Common pumps include reciprocating pumps, which use pistons, and centrifugal pumps, which use rapidly rotating impellers to impart centrifugal force. Reciprocating pumps are self-priming but have more complex construction, while centrifugal pumps require priming but have simpler construction. Proper pump selection and operation is important to avoid issues like cavitation.
This document provides an overview of radial piston pumps. It defines a radial piston pump as a type of hydraulic pump where the working pistons extend radially from a central drive shaft. The document discusses the construction, working, properties, advantages, and applications of radial piston pumps. It notes that radial piston pumps can produce smooth flow under extreme pressure and are commonly used in machine tools, hydraulic systems, and the automotive industry.
The document discusses infusion pumps, including their uses, types, and common issues. It describes two basic types - syringe pumps and volumetric pumps - and some of their key features. It also outlines several issues that can go wrong with infusion pumps, such as medication errors, free flow of fluids, occlusion alarms, air-in-line problems, and tampering. Training is emphasized as crucial to the safe use of infusion pumps.
The document provides information about setting up and using the Prismaflex dialysis machine. It discusses:
1) The basic setup which includes priming the lines, loading the correct filter set, and ensuring proper connections before starting treatment.
2) How to start treatment including calculating fluid removal rates and setting blood, replacement fluid, and effluent pump flows.
3) An overview of treatment management which involves monitoring pressures, alarms, fluid balances and treatment parameters.
4) Common alarms involving the blood leak detector, air detectors, and pressure issues; and how to address them.
6 Centrifugal Pump Parts & Their FunctionsSher Thapa
Centrifugal pumps available at - https://www.tradeindia.com/Seller/Industrial-Supplies/Centrifugal-Pumps/
A centrifugal pump is made of hundereds of small parts and components. However, there are some parts that play major roles in the functioning. Those parts are de
This document discusses different types of pumps. It explains that pumps are machines used to move liquids through piping systems and increase pressure. There are two main types of pumps - rotodynamic pumps which increase liquid velocity to raise pressure, and positive displacement (PD) pumps which directly apply force to liquid volumes to increase pressure. The document then describes several common PD pump designs including sliding vane, flexible impeller, peristaltic (flexible tube), progressing cavity, external gear, internal gear, and rotary lobe pumps. It provides details on how each type works and their advantages and disadvantages.
A valve is a component of the piping network. It is a mechanical device, controlling or modifying the flow and pressure within a pipeline that convey liquids and gases. A valve stops, allows, control and modifies flow of a fluid media.
Centrifugal pumps impart velocity energy to fluid using a rotating impeller, converting it to pressure energy. Positive displacement pumps physically move a fixed volume of fluid using movable boundaries. The main types are centrifugal, reciprocating, and rotary pumps. Centrifugal pumps are best for medium/high flows at low/medium pressures while reciprocating pumps work well for low flows at high pressures. Pump performance is represented through curves showing relationships between flow rate, pressure, and efficiency. Cavitation can damage pumps and occurs when local pressure drops below vapor pressure as bubbles form and violently collapse.
Pumps can be classified in several ways, including by their method of fluid displacement. The main types are positive displacement pumps, which force fluid through by trapping a fixed volume and displacing it, and centrifugal pumps, which use rotational energy to speed up fluid and push it outward. Positive displacement pumps further include rotary pumps like gear pumps and screw pumps, which use rotating mechanisms like gears or screws to trap fluid and move it through the pump.
This document discusses different types of groundwater pumps. It begins by introducing various pump classifications and descriptions. It then focuses on pumps used for groundwater, dividing them into three main categories: 1) hand and treadle pumps which are manually operated, 2) low pressure suction pumps which use suction to pull water from shallow depths, and 3) high pressure suction pumps, which include centrifugal pumps that use rotation to move water and positive displacement pumps that use expanding cavities to move water at constant volumes. The document provides details on the design and operation of centrifugal and positive displacement pumps. It concludes by mentioning submersible pumps and jet pumps as other groundwater pump options.
All About Centrifugal Pumps: Simple ExplanationFlowmore Pumps
Centrifugal pumps are capable of moving an extensive variability of fluids. It happens under a wide range of conditions. They continue to function for an extended period of time. It can happen due to their resilience.
Common Industries Where Centrifugal Pumps Are UsedFlowmore Pumps
A centrifugal pump is a mechanical gadget, which is designed to move a liquid through the exchange of rotational energy from at least one driven rotor, called impellers. In any case, prior to knowing further about the centrifugal pump.
A Step-Wise Guide to Choose the Right Centrifugal PumpsFlowmore Pumps
Centrifugal pumps are the most well-known kind of pump utilized in industrial applications today. That being said, there are an apparently interminable number.
Importance of Pumps in Various IndustriesIdexIndia1
Pumps are the unsung heroes of many industries, playing a crucial role in various processes. But why are pumps important in the industry? The next most-obvious question appears – where are pumps used in industry? They are used to move fluids, a fundamental requirement in many industrial applications.
Visit: https://www.idexindia.in/importance-of-pumps-in-various-industries/
Submersible mud pumps are commonly used in several industries. These pumps are specifically designed to operate underwater, making them highly versatile and suitable for a wide range of applications.
Introduction to Different Types of End Suction PumpsFlowmore Pumps
End suction pumps are perhaps the most well-known type of pumps. Practical and solid, they are reasonable for the scope of pumping applications. They are quite often single-stage pumps, meaning they have just a single impeller.
Submersible sludge pumps are designed to move viscous, sludgy materials while being fully submerged in the liquid. The pump is engineered precisely to withstand the abrasive nature of sludge to avoid the pump components.
The document discusses helical rotor pumps, also known as progressive cavity, 'wiggle', or 'Mono' pumps. It describes the key benefits as being hygienic because all internal surfaces are smooth, non-shearing so they don't damage products, and able to pump a wide range of liquids and slurries. However, it also lists limitations such as the need for tight clearances between the rotor and stator, keeping rotational speed low to minimize friction, and potential damage if foreign materials get caught between the rotor and stator.
A Centrifugal Pump is a programmed framework comprising two primary parts; a pump and an electrical engine. The critical part at the core of a centrifugal pump.
The document discusses different types of metering pumps used in chemical dosing applications in pulp and paper industries and water treatment. It describes piston pumps, diaphragm pumps, and hydraulic diaphragm pumps. Piston pumps can produce high pressures up to 5,000 psi and are ideal for applications like high-pressure liquid chromatography. Diaphragm pumps are used extensively for water treatment. Hydraulic diaphragm pumps can achieve higher flows and pressures than other pump types. The document also provides details on applications of metering pumps in water treatment and chemical processing.
Different Centrifugal Pump Types and Their ApplicationsJay Khodiyar Pumps
A centrifugal pump is commonly used for transporting fluid in various industries by converting rotational energy into kinetic energy generated from impellers.
We are manufacturer and supplier of Air Operated Double Diaphragm Pump (AODD Pump), Diaphragm Pump, Rubber and Industrial Products.
http://antliaworks.com/
Unlocking the Mechanics: How Does a Sludge Pump Work?JefferyMason1
Ever pondered the unheralded industry hero who toils away mud and mirelessly? The sludge pump is an essential component in managing the untidy residue left behind by different procedures. We set out to investigate the internal mechanisms of these modest but crucial gadgets in this piece. Now, let's get started and investigate the fascinating realm of "how does a sludge pump work?"
Types of Centrifugal Pumps – Everything You Need to KnowJay Khodiyar Pumps
Centrifugal pumps will be found in the major industrial applications. Centrifugal pumps are the most popular and commonly used pumps to move fluids and solid liquids in industrial plants. Ranging from domestic to industrial uses, centrifugal pumps have an extensive range of applications.
This document discusses agitation and mixing of fluids. It begins by introducing agitation as a means of mixing phases to enhance mass and heat transfer. It then defines agitation and mixing. The main purposes of agitation are to suspend solids, blend liquids, disperse gas in liquid, form emulsions or suspensions, and promote heat and mass transfer. Agitation methods include mechanical, hydraulic, pneumatic and pipeline mixing. The document also discusses the basic components of a stirred tank including the vessel, baffles, impellers and motor. It provides details on impeller types, size, location and flow patterns for effective mixing.
What Is A Centrifugal Pump? How Does A Centrifugal Pump Work?Sujal Enginnering
A pump is a device that is used to transfer many different types of incompressible fluids. Pumps are utilised for various uses across different industries and centrifugal pumps are one such type of pump.
Difference between slurry pump and centrifugal pump.pdfJefferyMason1
The difference between a slurry pump and a centrifugal pump lies in their design and application. While both are types of centrifugal pumps, slurry pumps are specifically engineered to handle abrasive and solid-laden fluids, such as slurries or mud. These pumps feature robust construction with wear-resistant materials to withstand the abrasive nature of the pumped media. On the other hand, centrifugal pumps, in a general sense, are designed for transporting liquids and are not necessarily optimized for handling solids. Slurry pumps are thus a specialized subset of centrifugal pumps tailored for challenging environments where solids must be efficiently transported.
Pressure Sensitive Tapes for Building and Construction Industry.
Leading self dhesive solutions that meet the needs and requirements of every sector within the Building and Construction Market.
You may Download this Presentation on :
Click :
You are Welcome to watch this presentation on our YouTube channel as well :
Click : https://www.youtube.com/channel/UCgovR9rsYHWKLzdg4N5eLSQ?view_as=subscriber
Pressure Sensitive Adhesive Tapes forAutomobiles
High Performance adhesive systems to meet the strict OEM technical and quality requirements for Automobiles, especially for
wire harness systems
vehicle & component assembly applications
You may Download this Presentation by clicking :
What is microsphere technology and how does it work?
Microsphere adhesive technology is the process of polymerizing large acrylic spherical particles to be used in the process of formulating pressure-sensitive adhesives (PSA).
Microspheres are tiny particles measuring between 10 and 250 microns in diameter.
Although they are microscopic in size, these spheres are still much larger than the emulsion particles found in conventional adhesives.
Anti Skid / Anti Slip Products
Especially for Senior Citizens
We have developed Anti Skid coatings with 100% Indigenous Technology
1. Anti Skid Coatings
It’s water base
Can be applied with a simple round paint brush
It cures faster and forms a firm coating on any type of flooring ( Glazed Tile, Kota stone, Concrete floor Marble tiles etc
2. Anti Skid Mats
Industrial Cotton cloth coated with our Innovative coating
Jute Mats coated with anti slip coating
Regular foot mats with our coating
Regular Carpets with our coating
3. Anti slip Thinner Pads that can be laminated with the Footwear available in Market
1) Release liners are carrier substrates with non-stick coatings that protect self-adhesive products. They comprise a web-form substrate with a coated surface that prevents adhesives from sticking.
2) Silicone polymers are commonly used in release coatings due to their low surface energy and thermal stability. They are applied via solvent-based, water-based, or radiation-cured systems.
3) Radiation curing allows quick curing without heat, allowing smaller coating machinery. It also avoids limitations of thermally-cured coatings for heat-sensitive substrates.
नमस्कार साथियो,
अपना भारत देश आत्मा निर्भर होना चाहिए, इस लिए, मेरी तरफसे ये एक छोटासा प्रयास है.
ये प्रशिक्षण, माननीय, प्रधान मंत्री श्री नरेंद्र मोदी जी के, अभियान को साथ देने की तम्मन्ना को ध्यान में रखते हुए आयोजित किया है .
Corona treating increases the surface tension/energy of HDPE sheets from 33 to approximately 45-46 dynes/cm2. The effects of corona treatment last for around 3-4 months, after which the surface energy starts to decrease again. Corona treatment does not affect the tensile strength or other physical properties of HDPE sheets. While ozone gas is emitted during corona treatment, it can be exhausted out of the work area using suitable ducting. The best adhesive to use for corona treating HDPE sheets in corrugated sheet manufacturing depends on the required peel strength, shear strength, and tack properties. Starch adhesives are commonly used but can absorb moisture over time, so synthetic adhesives based on P
This document discusses various coating methods used in industries. It begins by outlining the basic steps in a coating process, which includes preparing the coating solution, loading the substrate, applying the coating, drying, and winding. It then describes different coating methods like reverse roll, gravure, slot die, and air knife. Factors to consider when selecting a coating method include the substrate, solution properties, coverage needs, and production volume. The document also covers topics like covered rollers, considerations for selecting roll coating methods, and how roll coaters work.
In a speech to students in Pune, India, former President Dr. A.P.J. Abdul Kalam discusses the importance of empowering India's youth and encouraging them to think about how they can contribute to society rather than what they can take from others. He provides four principles for being unique: having your own goals based on your interests; being open to continuous learning; working hard through struggles to achieve your goals; and maintaining consistency and commitment. He hopes to inspire the students to pursue their dreams and make their mark through their work.
Hot melt adhesives are thermoplastic polymers that become liquid when heated above 80-220°C and solidify when cooled. They are applied in liquid state without solvents or water, allowing for precise application. Common polymers used include styrene copolymers, polyamides, and polyacrylates. Hot melts have advantages like being solvent-free, producing less waste, and allowing for adjustment of viscosity through temperature variation.
The document discusses different types of adhesive tapes, their uses, and manufacturing process. It focuses on pressure sensitive adhesive (PSA) tapes, which can adhere with just finger pressure. PSA tapes have two main components - the adhesive and backing material. Proper matching of these is important. PSA tapes are used widely in packaging, labeling, and other applications due to their easy application. The document then discusses specific types of packaging and sealing tapes used in carton sealing, duct sealing, gap sealing and their backing materials.
The document summarizes several coating methods used in manufacturing coated products, including gravure coating, comma coating, reverse roll coating, hot melt coating, metering rod/Meyer bar coating, knife over roll coating, slot orifice coating, immersion/dip coating, and curtain coating. It provides details on some key methods, such as how gravure coating uses an engraved roller to apply coating from a bath, and how Meyer bar coating uses a wire-wound rod to meter the desired amount of coating applied by a bath roller.
The document discusses various theories of adhesion including physical absorption, chemical bonding, diffusion, electrostatic, and mechanical interlocking theories. It explains that adhesion occurs due to molecular contact and surface forces between two materials. Adhesives are now commonly used in manufacturing across many industries like construction, automobiles, footwear, and more due to advantages like joining dissimilar materials and reducing weight.
The document provides an overview of the label manufacturing process and specifications. It discusses the key steps of printing and converting, the different types of labels and materials used, quality control processes, and common testing procedures. Key aspects covered include printing methods, substrates, adhesives, finishing, inspection, and industry standards.
The document discusses multi-layer composite films and the extrusion process used to produce them. It describes how multiple polymer layers from different extruders can be combined into a single film through a multi-manifold die. The film is then cooled on chill rollers before undergoing slitting, gauging, and winding into rolls. Properties like optical clarity and barrier performance can be optimized through adjustments to materials, temperatures, and processing speeds. Common polymers used include polyolefins like polyethylene and polypropylene.
The document discusses various types of coatings used for plastic films, paper, and metal foils. It describes common coating techniques like comma coating, reverse roll coating, and Myer bar coating. It also discusses surface treatment methods like corona treatment and plasma treatment that are used to increase adhesion of coatings. Barrier coatings used for paper are mentioned, which improve properties like printability, smoothness, gloss, and brightness.
The document discusses different options for marking and coding product packaging, including laser coding, thermal transfer overprinting, and continuous inkjet printing. It provides details on each technology, such as how they work, their advantages, and common applications. Laser coding does not require inks and can mark many materials quickly and permanently. Thermal transfer overprinting uses a thermal printhead and ribbon to print on flexible substrates. Continuous inkjet printing applies ink drops to create codes on a variety of packaging at high speeds. Each technology is suited to different industries and packaging materials.
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...Neo4j
Leonard Jayamohan, Partner & Generative AI Lead, Deloitte
This keynote will reveal how Deloitte leverages Neo4j’s graph power for groundbreaking digital twin solutions, achieving a staggering 100x performance boost. Discover the essential role knowledge graphs play in successful generative AI implementations. Plus, get an exclusive look at an innovative Neo4j + Generative AI solution Deloitte is developing in-house.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Enchancing adoption of Open Source Libraries. A case study on Albumentations.AIVladimir Iglovikov, Ph.D.
Presented by Vladimir Iglovikov:
- https://www.linkedin.com/in/iglovikov/
- https://x.com/viglovikov
- https://www.instagram.com/ternaus/
This presentation delves into the journey of Albumentations.ai, a highly successful open-source library for data augmentation.
Created out of a necessity for superior performance in Kaggle competitions, Albumentations has grown to become a widely used tool among data scientists and machine learning practitioners.
This case study covers various aspects, including:
People: The contributors and community that have supported Albumentations.
Metrics: The success indicators such as downloads, daily active users, GitHub stars, and financial contributions.
Challenges: The hurdles in monetizing open-source projects and measuring user engagement.
Development Practices: Best practices for creating, maintaining, and scaling open-source libraries, including code hygiene, CI/CD, and fast iteration.
Community Building: Strategies for making adoption easy, iterating quickly, and fostering a vibrant, engaged community.
Marketing: Both online and offline marketing tactics, focusing on real, impactful interactions and collaborations.
Mental Health: Maintaining balance and not feeling pressured by user demands.
Key insights include the importance of automation, making the adoption process seamless, and leveraging offline interactions for marketing. The presentation also emphasizes the need for continuous small improvements and building a friendly, inclusive community that contributes to the project's growth.
Vladimir Iglovikov brings his extensive experience as a Kaggle Grandmaster, ex-Staff ML Engineer at Lyft, sharing valuable lessons and practical advice for anyone looking to enhance the adoption of their open-source projects.
Explore more about Albumentations and join the community at:
GitHub: https://github.com/albumentations-team/albumentations
Website: https://albumentations.ai/
LinkedIn: https://www.linkedin.com/company/100504475
Twitter: https://x.com/albumentations
zkStudyClub - Reef: Fast Succinct Non-Interactive Zero-Knowledge Regex ProofsAlex Pruden
This paper presents Reef, a system for generating publicly verifiable succinct non-interactive zero-knowledge proofs that a committed document matches or does not match a regular expression. We describe applications such as proving the strength of passwords, the provenance of email despite redactions, the validity of oblivious DNS queries, and the existence of mutations in DNA. Reef supports the Perl Compatible Regular Expression syntax, including wildcards, alternation, ranges, capture groups, Kleene star, negations, and lookarounds. Reef introduces a new type of automata, Skipping Alternating Finite Automata (SAFA), that skips irrelevant parts of a document when producing proofs without undermining soundness, and instantiates SAFA with a lookup argument. Our experimental evaluation confirms that Reef can generate proofs for documents with 32M characters; the proofs are small and cheap to verify (under a second).
Paper: https://eprint.iacr.org/2023/1886
In his public lecture, Christian Timmerer provides insights into the fascinating history of video streaming, starting from its humble beginnings before YouTube to the groundbreaking technologies that now dominate platforms like Netflix and ORF ON. Timmerer also presents provocative contributions of his own that have significantly influenced the industry. He concludes by looking at future challenges and invites the audience to join in a discussion.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
GridMate - End to end testing is a critical piece to ensure quality and avoid...ThomasParaiso2
End to end testing is a critical piece to ensure quality and avoid regressions. In this session, we share our journey building an E2E testing pipeline for GridMate components (LWC and Aura) using Cypress, JSForce, FakerJS…
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Pushing the limits of ePRTC: 100ns holdover for 100 daysAdtran
At WSTS 2024, Alon Stern explored the topic of parametric holdover and explained how recent research findings can be implemented in real-world PNT networks to achieve 100 nanoseconds of accuracy for up to 100 days.
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
Removing Uninteresting Bytes in Software FuzzingAftab Hussain
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
A tale of scale & speed: How the US Navy is enabling software delivery from l...sonjaschweigert1
Rapid and secure feature delivery is a goal across every application team and every branch of the DoD. The Navy’s DevSecOps platform, Party Barge, has achieved:
- Reduction in onboarding time from 5 weeks to 1 day
- Improved developer experience and productivity through actionable findings and reduction of false positives
- Maintenance of superior security standards and inherent policy enforcement with Authorization to Operate (ATO)
Development teams can ship efficiently and ensure applications are cyber ready for Navy Authorizing Officials (AOs). In this webinar, Sigma Defense and Anchore will give attendees a look behind the scenes and demo secure pipeline automation and security artifacts that speed up application ATO and time to production.
We will cover:
- How to remove silos in DevSecOps
- How to build efficient development pipeline roles and component templates
- How to deliver security artifacts that matter for ATO’s (SBOMs, vulnerability reports, and policy evidence)
- How to streamline operations with automated policy checks on container images
2. Handling Adhesives is always
a Challenge
The main issues are
The Viscosity ?
The Stickiness ?
The solvent ? Organic ? or Water ?
The distance the adhesive needs to be moved ?
To deliver the adhesive right to the coating
end straight from the source
Cleaning ?
7/2/2013 2Visit us on : www.psadhesive.com
3. A pump is a device
that moves liquids or slurries,
by mechanical action.
Pumps can be classified into three major groups
direct lift,
displacement,
and gravity pumps.
A variety of Pumps are Used to meet this
Challenge
7/2/2013 3Visit us on : www.psadhesive.com
4. Pumps
operate by some mechanism
and
consume energy
to perform mechanical work of moving the
Adhesive.
Pumps operate via many energy sources,
including manual operation,
electricity, engines, or Air pressure.
7/2/2013 4Visit us on : www.psadhesive.com
5. Pumps
can be classified into
positive displacement pumps,
impulse pumps,
velocity pumps,
gravity pumps,
steam pumps
and
valve less pumps.
7/2/2013 5Visit us on : www.psadhesive.com
6. Pumps
also classified as
positive displacement pumps,
impulse pumps,
velocity pumps,
gravity pumps,
steam pumps
and
valve less pumps.
7/2/2013 6Visit us on : www.psadhesive.com
7. 1. How do pumps work ?
Pumps move fluid in a variety of ways
Centrifugal Pumps
Use centrifugal force to push the fluid through the outlet.
Metering Pumps
Bellows, diaphragm, peristaltic, piston, and syringe pumps
are all metering pumps that pull the fluid through the inlet
valve into a chamber, close the inlet valve, and then push
the fluid through the outlet valve.7/2/2013 7Visit us on : www.psadhesive.com
8. Positive Displacement Pumps
Bellows, double-diaphragm, flexible impeller, gear,
oscillating, piston, progressing cavity, rotary lobe, rotary
vane, and peristaltic pumps have a fixed cavity that the
fluid is pushed through by rollers, gears, or impeller. As
the fluid is pushed through, it leaves a void or vacuum
which pulls in more fluid.
7/2/2013 8Visit us on : www.psadhesive.com
9. 2. Are centrifugal pumps variable speed ?
Most centrifugal pumps do not have variable speed
motors. However, you can control flow rate on the
discharge using a valve.
3. What exactly is a positive displacement pump ?
A positive displacement pump emits a given volume of
fluid for each revolution of the motor. Bellows, double-
diaphragm, flexible impeller, gear, oscillating, piston,
progressing cavity, rotary lobe, rotary vane, and
peristaltic pumps are all positive displacement pumps.
7/2/2013 9Visit us on : www.psadhesive.com
10. 4. Which pumps can I run dry ?
Peristaltic, piston pumps with ceramic heads, bellows
pumps, and diaphragm pumps can be run dry for any
length of time. Centrifugal, rotary vane, and gear pumps
should not be run dry; exceptions are if the gear or
impeller is made of a self-lubricating material such as
RYTON in which case the pump can be run for a few
minutes while priming.
5. What is the maximum viscosity rating for pumps ?
This depends on the type of pump and the specific pump.
Diaphragm pumps (especially double diaphragm pumps)
and gear pumps are usually the best for viscous fluids.7/2/2013 10Visit us on : www.psadhesive.com
11. 6. What pumps do you carry that will handle
particulates ?
Diaphragm pumps, bellows pumps and peristaltic pumps
will work well. When choosing materials, consider
chemical compatibility and resistance to wear.
Use a pump with larger fittings so they don't clog as
easily.
7/2/2013 11Visit us on : www.psadhesive.com
12. 7. I need gentle pumping action, what do you
recommend ?
A peristaltic pump, used at low speeds. You can also use a
diaphragm pump, again at low speed. Centrifugal and
gear pumps, which work at high speeds and have high
shear rates, should be avoided.
7/2/2013 12Visit us on : www.psadhesive.com
13. 8. When do you need to perform maintenance on
pumps ?
This depends on the pump and the application. In general,
diaphragms on metering pumps last about 6 to 12 months;
gears on gear pumps last about 3 to 6 months; and motors
usually last for years.
DC motors require periodic brush replacement. It is
important to monitor brush wear; normally brushes should
be replaced every 6 months.
7/2/2013 13Visit us on : www.psadhesive.com
14. 7/2/2013 14Visit us on : www.psadhesive.com
To select a Best Pump
to handle viscous fluids , it’s important
to understand viscous fluid behavior at
different shear rates.
There are a number of types of viscous
fluid behavior.
15. 7/2/2013 15Visit us on : www.psadhesive.com
Newtonian fluids
Viscosity is constant with
change in shear rate or
agitation
Forces to cause motion
increase proportionately as
speed increase
Fluid showing Newtonian
behavior include water,
mineral oils, syrup, hydro
carbons and resins
16. 7/2/2013 16Visit us on : www.psadhesive.com
Thixotropic Fluids
Viscosity decreases as shear
rate or agitation increases.
The force to cause motion
are relatively lower as speed
increases. Examples are
soaps, tars, vegetable oils,
glue, inks , and some
slurries.
17. 7/2/2013 17Visit us on : www.psadhesive.com
Dilatant fluids
Viscosity increase as shear
increases. Forces to cause
motion may greatly increase as
speed increases , examples are
slurries, clay etc.
18. 7/2/2013 18Visit us on : www.psadhesive.com
Plastic and pseudo
plastic Fluids
Viscosity decreases as shear
rate increases , but initial
viscosity may not be great
enough to prevent start of flow
in a typical pumping system.
Typical plastic fluids are gels,
latex , lotions
19. Bellows
These pumps move fluid
through a reciprocating
bellows cavity that is coupled
to a driving rod. Pumps are
found in the "Metering" and
"Positive Displacement" pump
sections.
7/2/2013 19Visit us on : www.psadhesive.com
20. Centrifugal
A rotating vanned disk
attached to a drive shaft
moves fluid without
pulsation as it spins.
The outlet can be restricted
without damaging the
pump.
7/2/2013 20Visit us on : www.psadhesive.com
21. Diaphragm
Pulsations of one or two
flexible diaphragms
displace liquid while
check valves control the
direction of the fluid flow.
7/2/2013 21Visit us on : www.psadhesive.com
22. Flexible Liner
The outer surface of an inert
liner and inner surface of a
rotating body block create a
fluid channel used to gently
pump fluids without
pulsation.
7/2/2013 22Visit us on : www.psadhesive.com
23. Flexible Impeller
Elastomeric impeller traps
fluid between the impeller
blades and a moulded
housing that sweeps fluid
through the pump housing.
7/2/2013 23Visit us on : www.psadhesive.com
24. Gear
Fluid is trapped between
the teeth of two or three
rotating gears.
Gear pumps are good for
high system-pressure
applications and are
often magnetically
driven
7/2/2013 24Visit us on : www.psadhesive.com
25. Hand
Manually powered pumps
of various designs used for
short term or repetitive
liquid transfer applications.
Hand-operated,
reciprocating, positive
displacement,
7/2/2013 25Visit us on : www.psadhesive.com
26. Peristaltic
(tubing)
Fluid only contacts the
tubing—rollers of a motor-
driven pump head push the
fluid along the tubing as
they rotate.
Non contaminating and easy
to clean.
7/2/2013 26Visit us on : www.psadhesive.com
27. 7/2/2013 27Visit us on : www.psadhesive.com
Peristaltic tube pump with two
sprung rollers
28. 7/2/2013 28Visit us on : www.psadhesive.com
A Peristaltic pump
is a type of positive displacement pump used for
pumping a variety of fluids.
The fluid is contained within a flexible tube fitted
inside a circular pump casing (though linear peristaltic
pumps have been made).
A rotor with a number of "rollers", "shoes", "wipers",
or "lobes" attached to the external circumference of the
rotor compresses the flexible tube.
29. 7/2/2013 29Visit us on : www.psadhesive.com
As the rotor turns, the part of the tube under
compression is pinched closed (or "occludes") thus
forcing the fluid to be pumped to move through the
tube.
Additionally, as the tube opens to its natural state after
the passing of the cam ("restitution" or "resilience")
fluid flow is induced to the pump. This process is
called peristalsis
30. 7/2/2013 30Visit us on : www.psadhesive.com
Peristaltic pumps
are typically used to pump clean/sterile or aggressive fluids
because cross contamination with exposed pump components
cannot occur.
Some common applications include pumping IV fluids through an
infusion device, aggressive chemicals, high solids slurries and
other materials where isolation of the product from the
environment, and the environment from the product, are critical.
It is also used in heart-lung machines to circulate blood during
a bypass surgery as the pump does not cause
significant haemolysis.
Peristaltic pumps are also used in a wide variety of industrial
applications. Their unique design makes them especially suited to
pumping abrasives and viscous fluids.
31. Piston
Rotating pistons of
varying stroke lengths
pump fluids through
check valves.
Good for high-pressure
applications.
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Piston Pumps
2 Ball Piston pumps
These Pumps feature two balls
checks that control fluid flow.
They are typically used with low
to medium viscosity fluids up to
100,000 centipoise ( cPs ) with
fluid delivery up to 18.1 gpm
( 68.6 lpm ) , depending on the
application
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Piston
Pumps
4
Handling
Adhesives
34. Positive Displacement
Pump
A positive displacement pump makes a fluid move by
trapping a fixed amount and forcing (displacing) that
trapped volume into the discharge pipe.
Some positive displacement pumps use an expanding
cavity on the suction side and a decreasing cavity on
the discharge side.
Liquid flows into the pump as the cavity on the suction
side expands and the liquid flows out of the discharge
as the cavity collapses.
The volume is constant through each cycle of
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35. Lobe Pumps
are used in a variety of
industries including
Pulp and paper,
chemical,
food
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36. How lobe pumps work
Lobe pumps are similar to external gear pumps in
operation in that fluid flows around the interior of the
casing.
Unlike external gear pumps, however, the lobes do not
make contact. Lobe contact is prevented by external
timing gears located in the gearbox.
Pump shaft support bearings are located in the gearbox,
and since the bearings are out of the pumped liquid,
pressure is limited by bearing location and shaft
deflection.7/2/2013 36Visit us on : www.psadhesive.com
37. How lobe pumps work
1. As the lobes come out of mesh, they create
expanding volume on the inlet side of the pump.
Liquid flows into the cavity and is trapped by the
lobes as they rotate.
2. Liquid travels around the interior of the casing in
the pockets between the lobes and the casing—it does
not pass between the lobes.
3. Finally, the meshing of the lobes forces liquid
through the outlet port under pressure.
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38. Gear pump
A gear pump uses the meshing of gears to pump fluid
by displacement. They are one of the most common
types of pumps for hydraulic fluid power applications.
Gear pumps are also widely used in chemical
installations to pump fluid with a certain viscosity.
There are two main variations
external gear pumps which use two external spur gears,
and
internal gear pumps which use an external and an
internal spur gear.
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39. Gear pumps are positive
displacement
(or fixed displacement),
meaning they pump a
constant amount of fluid for
each revolution.
Some gear pumps are
designed to function as either
a motor or a pump.
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40. External gear pump design for
hydraulic power applications.
Internal gear pump design for
automotive oil pumps.
Internal gear pump design for high
viscosity fluids.
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41. Generally used in
Petrochemicals Pure or filled bitumen,
pitch, diesel oil, crude oil, lube oil etc.
Chemicals Sodium silicate, acids,
plastics, mixed chemicals, iso cyanates
etc.
Paint and ink.
Resins and adhesives.
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42. Gear pump
This is the simplest of rotary positive displacement
pumps. It consists of two meshed gears that rotate in a
closely fitted casing.
The tooth spaces trap fluid and force it around the outer
periphery.
The fluid does not travel back on the meshed part,
because the teeth mesh closely in the centre. Gear
pumps see wide use in car engine oil pumps and in
various hydraulic power packs.
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43. Screw pump
A Screw pump is a more complicated type of rotary
pump that uses two or three screws with opposing
thread—e.g., one screw turns clockwise and the other
counter clockwise. The screws are mounted on parallel
shafts that have gears that mesh so the shafts turn
together and everything stays in place. The screws turn
on the shafts and drive fluid through the pump. As with
other forms of rotary pumps, the clearance between
moving parts and the pump's casing is minimal.
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44. Widely used for pumping difficult materials, such as
sewage sludge contaminated with large particles, this
pump consists of a helical rotor, about ten times as long
as its width. This can be visualized as a central core of
diameter x with, typically, a curved spiral wound
around of thickness half x, though in reality it is
manufactured in single casting.
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45. This shaft fits inside a heavy duty
rubber sleeve, of wall thickness also
typically x. As the shaft rotates, the
rotor gradually forces fluid up the
rubber sleeve. Such pumps can
develop very high pressure at low
volumes.
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46. Plunger pumps
are reciprocating positive
displacement pumps.
These consist of a cylinder with a
reciprocating plunger. The suction
and discharge valves are mounted
in the head of the cylinder. In the
suction stroke the plunger retracts
and the suction valves open
causing suction of fluid into the
cylinder. In the forward stroke the
plunger pushes the liquid out of
the discharge valve. Efficiency and
common problems
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47. With only one cylinder in
plunger pumps, the fluid flow
varies between maximum flow
when the plunger moves
through the middle positions,
and zero flow when the
plunger is at the end positions.
A lot of energy is wasted when
the fluid is accelerated in the
piping system. Vibration
and water hammer may be a
serious problem. In general the
problems are compensated for
by using two or more cylinders
not working in phase with each
other.
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Double Diaphragm Pump
A more common type of diaphragm
pump is the air-operated double
diaphragm pump.
It uses pressurized air to activate the
diaphragms instead of a mechanical
device.
This is basically two pumps in one –
one is on the suction cycle,
while the other is on the discharge
cycle.
The air valves alternately pressurize the
inside of one diaphragm chamber and
exhaust air from the other one.
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Inside the Double
Diaphragm Pump
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Air Chambers
Compressed air flows in or out of the air Chambers.
The pump has a right and left air chambers.
Fluid Housings
The fluid being pumped flows through the fluid housings.
Each pump has a right and left fluid Housing
Diaphragms
Diaphragms separate the air chambers and fluid housings
in the pump. The diaphragm is a material that flex with
increasing or decreasing air pressure. A common shaft
connects the two diaphragms.
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Inlet manifold
Fluid flows from the fluid container through the inlet
manifold either to the right or left fluid housing.
Outlet manifold
Fluid flows out of the right or left fluid housing past the
check valves , then through the outlet manifold.
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Air Valve
the air valve directs compressed air either the right or
left air chamber. the air valve consists of a
triggering mechanism , a valve cup, and a valve plate.
The air valve directs compressed air through a port to
one of the air chambers while the opposite air chamber
is directed to the exhaust port
Check valves
A double diaphragm has four fluid check valves , two
inlet check valves and two outlet checks valves.
the check valves control the fluid flow through the fluid
housing and manifolds of the pumps.
Most double diaphragm pumps use ball type check
valves. housing , and outlet manifold.
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Muffler
the muffler minimizes the noise of the exhaust air.
different mufflers provide different levels of noise
reduction.
Wetted parts
the wetted parts include all parts that come into contact
with the pumped fluid.
they include the inlet manifold , ball checks and seats ,
diaphragms , fluid housing , and outlet manifold.
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Advantages
o High fluid delivery rates at low fluid application pressure ,
less than 120 psi ( 8.5 bar )
o Easy to install on a cover , pail , wall
o Many diaphragm options for fluid versatility with extended
pump life
o Air power offers convenience for many installations , no
electrical hazard
o Excellent portability
o Handles a wide variety of fluid viscosities, abrasive, and
corrosive qualities
o Seal less , leak proof design prevents fluid waste , mess and
hazard
o Can run dry without damage
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Air Valve advantages
The air valve is the principle feature that differentiates this
pump from the others
Not dependent on the air being clean, dry or containing oil
Allows for easy online maintenance of the pump. Decreased
repair time and cost
Uses fewer seals compared to other designs.
Operates on very little air pressure , 15 psi ( 1 bar ) or less
Creates a more gentle pumping action during high flow rates
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Limitations
Not suitable for high pressure applications
The fluid to air ratio relationship is 1 : 1 , meaning
100psi of compressed air , theoretically will deliver 100 psi
of fluid output
Air consumption in a continuous duty operation may result in
higher energy consumption than other pumps
64. Gear Pumps
Gear pumps (with external teeth) (fixed displacement) are simple
and economical pumps. The swept volume or displacement of
gear pumps for hydraulics will be between about 1 cm3 (0.001
litre) and 200 cm3 (0.2 litre).
They have the lowest volumetric efficiency ( ) of all three basic
pump types (gear, vane and piston pumps) These pumps create
pressure through the meshing of the gear teeth, which forces fluid
around the gears to pressurize the outlet side.
For lubrication, the gear pump uses a small amount of oil from
the pressurized side of the gears, bleeds this through the
(typically) hydrodynamic bearings, and vents the same oil either
to the low pressure side of the gears, or through a dedicated drain
port on the pump housing.7/2/2013 64Visit us on : www.psadhesive.com
65. Some gear pumps can be quite noisy, compared to other types,
but modern gear pumps are highly reliable and much quieter than
older models. This is in part due to designs incorporating split
gears, helical gear teeth and higher precision/quality tooth
profiles that mesh and un mesh more smoothly, reducing pressure
ripple and related detrimental problems.
Another positive attribute of the gear pump, is that catastrophic
breakdown is a lot less common than in most other types of
hydraulic pumps. This is because the gears gradually wear down
the housing and/or main bushings, reducing the volumetric
efficiency of the pump gradually until it is all but useless. This
often happens long before wear causes the unit to seize or break
down.
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66. Rotary vane pumps
Rotary vane pumps (fixed and simple adjustable displacement)
have higher efficiencies than gear pumps, but are also used for
mid pressures up to 180 bars in general.
Modern units can exceed 300 bars in continuous operation,
although vane pumps are not regarded as "high pressure"
components. Some types of vane pumps can change the centre of
the vane body, so that a simple adjustable pump is obtained.
These adjustable vane pumps are in general constant pressure or
constant power pumps:
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67. the displacement is increased until the required pressure or power
is reached and subsequently the displacement or swept volume is
decreased until an equilibrium is reached.
A critical element in vane pump design is how the vanes are
pushed into contact with the pump housing, and how the vane tips
are machined at this very point.
Several type of "lip" designs are used, and the main objective is to
provide a tight seal between the inside of the housing and the
vane, and at the same time to minimize wear and metal-to-metal
contact.
Forcing the vane out of the rotating centre and towards the pump
housing is accomplished using spring-loaded vanes, or more
traditionally, vanes loaded hydro dynamically (via the pressurized
system fluid).7/2/2013 67Visit us on : www.psadhesive.com
68. Screw pumps
Screw pumps (fixed displacement) consist of two Archimedes'
screws that intermesh and are enclosed within the same chamber.
These pumps are used for high flows at relatively low pressure
(max 100 bar). They were used on board ships where a constant
pressure hydraulic system extended through the whole ship,
especially to control ball valves but also to help drive the steering
gear and other systems.
The advantage of the screw pumps is the low sound level of these
pumps; however, the efficiency is not high.
The major problem of screw pumps is that the hydraulic reaction
force is transmitted in a direction that's axially opposed to the
direction of the flow.
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69. There are two ways to overcome this problem:
(1) put a thrust bearing beneath each rotor;
(2) create a hydraulic balance by directing a hydraulic force to a
piston under the rotor.
Types of screw pumps:
1. single end
2. double end
3. single rotor
4. multi rotor timed
5. multi rotor untimed.
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70. Types of screw pumps:
(1) single end
(2) double end
(3) single rotor
(4) multi rotor timed
(5) multi rotor untimed.
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71. Bent axis pumps
Bent axis pumps, axial piston pumps and motors using the bent
axis principle, fixed or adjustable displacement, exists in two
different basic designs.
These have the best efficiency of all pumps.
Although in general the largest displacements are approximately
one litre per revolution, if necessary a two-litre swept volume
pump can be built.
Often variable-displacement pumps are used, so that the oil flow
can be adjusted carefully.
These pumps can in general work with a working pressure of up
to 350–420 bars in continuous work.
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72. Axial piston pumps swash plate principle
Axial piston pumps using the swash plate principle (fixed and
adjustable displacement) have a quality that is almost the same as
the bent axis model.
They have the advantage of being more compact in design.
The pumps are easier and more economical to manufacture; the
disadvantage is that they are more sensitive to oil contamination.
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73. Radial piston pumps
Radial piston pumps are used especially for high pressure and
relatively small flows. Pressures of up to 650 bar are normal. In
fact variable displacement is possible. The pump is designed in
such a way that the plungers are connected to a floating ring.
This floating ring can be moved horizontally by a control lever
& thus causes an eccentricity in the centre of rotation of the
plungers. The amount of eccentricity can be controlled to vary
the discharge. The suction & discharge can be totally reversed
seamlessly by shifting the eccentricity to the opposite side.
Hence both quantity & direction can be varied in a radial piston
pump, just as in the Swash plate pump.
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74. Peristaltic pumps
Peristaltic pumps are not generally used for high pressures.
Pumps for open and closed systems
Most pumps are working in open systems. The pump draws oil
from a reservoir at atmospheric pressure.
It is very important that there is no cavitation at the suction side of
the pump. For this reason the connection of the suction side of the
pump is larger in diameter than the connection of the pressure
side.
In case of the use of multi-pump assemblies, the suction
connection of the pump is often combined. It is preferred to have
free flow to the pump (pressure at inlet of pump at least 0.8 bars).
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75. The body of the pump is often in open connection with the
suction side of the pump.
In case of a closed system, both sides of the pump can be at high
pressure. The reservoir is often pressurized with 6-20 bars boost
pressure.
For closed loop systems, normally axial piston pumps are used.
Because both sides are pressurized, the body of the pump needs a
separate leakage connection.
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76. Multi pump assembly
In a hydraulic installation, one pump can serve several cylinders
and motors. However, in that case a constant pressure system is
required and the system always needs full power.
It is more economic to give each cylinder and motor its own
pump. In that case, multi-pump assemblies can be used. Gear
pumps are often supplied as multi-pumps.
The different chambers (sometimes of different sizes) are
mounted in one body or built together. Vane pumps and gerotor
pumps too are often available as multi-pumps.
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600 series mid-flow peristaltic
pumps
Watson-Marlow are world leaders in the fastest
growing pump type for industry, so we set
tough targets for the 600 series: increase
pressure and flow, cut maintenance time to less
than one minute and protect the process. 620
models are powerful, easy-to-operate pumps
offering industrial strength with unrivalled
precision.
Flow rates up to 4.8 gpm (18 litre/min)
Pressures up to 60 psi (4 bar)
0.1 rpm to 265 rpm with speed accuracy to 0.1
rpm:
2,650:1 turndown
Manual control; remote analogue digital and
network control; RS485 or RS232Intuitive,
easy-to-use membrane keypad with large keys.
60% fewer tube occlusions than our competitors
for unbeatable tube life.
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Let’s watch some Animations /
Video Clips
on
the Actual working
Of variety of
Pumps
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Or copy this url and paste
http://upload.wikimedia.org/wikipedia/comm
ons/9/95/Peristaltic_pump.gif
Please Watch this Animation
To understand the principle of operation
Peristaltic
pump
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Internal Gear Pump Animation
Visit :
http://www.youtube.com/watch?v=omJ4IM6i1DM
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Vane Pump Animation
Visit :
http://www.youtube.com/watch?v=BnvzPoNSXCg
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SRU Rotary Lobe Pump
Visit :
http://www.youtube.com/watch?v=m-ZWPnvC0wc
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variable displacement piston pump
Visit:
http://www.youtube.com/watch?v=2mh902AP7Yw
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hydraulic gear pump
Visit:
http://www.youtube.com/watch?v=HPBaCRK_t78
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piston pump
Visit:
http://www.youtube.com/watch?v=gcgWJatUnmc
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Double Diaphragm pump
Visit:
http://www.youtube.com/watch?v=RuEFZGDbL2M
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Double Diaphragm Pump
Another variety
Visit:
http://www.youtube.com/watch?v=0V35Laueboc
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http://www.youtube.com/watch?v=Y6To-bgL4GE
Here is a Video link
to see how the Double
Diaphragm Pump Operates.