• A pump is the heart of the hydraulic system, convert mechanical energy into hydraulic energy.
• Main purpose of the pump is to create the flow of oil through the system & thus assist transfer of power & motion.
• The combined pumping and driving motor unit is known as hydraulic pump.
• The hydraulic pump takes hydraulic fluid (mostly some oil) from the storage tank and delivers it to the rest of the hydraulic circuit.
• In general, the speed of pump is constant and the pump delivers an equal volume of oil in each revolution.
HYDRAULIC POWER GENERATING AND UTILIZING SYSTEMS
Introduction to fluid power system - Hydraulic fluids - functions, types, properties, selection and application.
POWER GENERATING ELEMENTS: Pumps, classification, working of different pumps such as Gear, Vane, Piston (axial and radial), pump performance or characteristics, pump selection factors- simple Problems.
POWER UTILIZING ELEMENTS: Fluid Power Actuators: Linear hydraulic actuators – Types and construction of hydraulic cylinders – Single acting, Double acting, special cylinders like tandem, Rodless, Telescopic, Cushioning mechanism.
Hydraulic Motors, types – Gear, Vane, Piston (axial and radial) – performance of motors.
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.
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
This is basic ppt for Hydraulics and Pneumatics introduction. It states concept of both, their respective advantages, disadvantages along with great number of practical examples.
This also includes circuits of hydraulics and pneumatics with different components.
I hope you appreciate this efforts.
Do like, share and comment.
Aditya Deshpande
HYDRAULIC POWER GENERATING AND UTILIZING SYSTEMS
Introduction to fluid power system - Hydraulic fluids - functions, types, properties, selection and application.
POWER GENERATING ELEMENTS: Pumps, classification, working of different pumps such as Gear, Vane, Piston (axial and radial), pump performance or characteristics, pump selection factors- simple Problems.
POWER UTILIZING ELEMENTS: Fluid Power Actuators: Linear hydraulic actuators – Types and construction of hydraulic cylinders – Single acting, Double acting, special cylinders like tandem, Rodless, Telescopic, Cushioning mechanism.
Hydraulic Motors, types – Gear, Vane, Piston (axial and radial) – performance of motors.
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.
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
This is basic ppt for Hydraulics and Pneumatics introduction. It states concept of both, their respective advantages, disadvantages along with great number of practical examples.
This also includes circuits of hydraulics and pneumatics with different components.
I hope you appreciate this efforts.
Do like, share and comment.
Aditya Deshpande
Pumps, Types of Pumps, Classification of Pumps and Characteristics of Pumps.Talal Khan
This Presentation Discus Pumps(Centrifugal and Positive Displacement) Also it Discusses other properties of pumps.
It also consists of Images and animations of the Pumps.
Pump and pumps classification.Introduction of Pumps.Applications of Pumps.Types of pump.Centrifugal Pump. Diaphragm pump.lobe pump.Positive displacement pump
Gear pump. Uses of pump.
The study of hydraulics deals with system operated with hydraulic oil media to impart power or to control power.
• Hydraulicpoweristhepowerthatistransmittedbypressurizedoil.
• It may be used to power machines or to control or to regulate machines.
Hydraulics today has become a way of life as most applications have some form of system ingrained. This paper is an endevor to present the very basics of hydraulics and overcome its basic fear.
The fluid discharged by the pump is directed to the ‘hydraulic actuator’.Theactuatorconvertthepressureenergyofthefluid into mechanical energy. There are 3 basic type of hydraulic actuator.
• Theactuatorsconvertthefluidpressuretoasuitablelinearor rotary motion.
• Linearmotion–Hydrauliccylinder
• Rotary motion – Hydro motor
• Rotarymotion–Semi-rotaryactuator
Introduction, classification, principle of working and constructional details of vane pumps, gear pumps, radial and axial plunger pumps, screw pumps, power and efficiency calculations, characteristics curves, selection of pumps for hydraulic Power transmission.
Pumps, Types of Pumps, Classification of Pumps and Characteristics of Pumps.Talal Khan
This Presentation Discus Pumps(Centrifugal and Positive Displacement) Also it Discusses other properties of pumps.
It also consists of Images and animations of the Pumps.
Pump and pumps classification.Introduction of Pumps.Applications of Pumps.Types of pump.Centrifugal Pump. Diaphragm pump.lobe pump.Positive displacement pump
Gear pump. Uses of pump.
The study of hydraulics deals with system operated with hydraulic oil media to impart power or to control power.
• Hydraulicpoweristhepowerthatistransmittedbypressurizedoil.
• It may be used to power machines or to control or to regulate machines.
Hydraulics today has become a way of life as most applications have some form of system ingrained. This paper is an endevor to present the very basics of hydraulics and overcome its basic fear.
The fluid discharged by the pump is directed to the ‘hydraulic actuator’.Theactuatorconvertthepressureenergyofthefluid into mechanical energy. There are 3 basic type of hydraulic actuator.
• Theactuatorsconvertthefluidpressuretoasuitablelinearor rotary motion.
• Linearmotion–Hydrauliccylinder
• Rotary motion – Hydro motor
• Rotarymotion–Semi-rotaryactuator
Introduction, classification, principle of working and constructional details of vane pumps, gear pumps, radial and axial plunger pumps, screw pumps, power and efficiency calculations, characteristics curves, selection of pumps for hydraulic Power transmission.
in industries like iron and glass the fluid for hydraulic machines are delivered by multistage pumps. this is the basic introduction for clearing the concept of multi stage pumps.
We are manufacturer and supplier of Air Operated Double Diaphragm Pump (AODD Pump), Diaphragm Pump, Rubber and Industrial Products.
http://antliaworks.com/
The hydraulic excavator, which is commonly employed in the construction and mining industries, is one such piece of heavy equipment. The excavator's main components are a bucket, arm, rotating cab, and moving tracks, and its activities are controlled by hydraulics.
Hydraulic Excavators
Construction Requirements
Mahaveer Distributors
Hydraulic Excavators
Because of its capacity to handle enormous weights and the power of the control mechanism, hydraulics is used in the majority of heavy-duty equipment. The hydraulic excavator, which is commonly employed in the construction and mining industries, is one such piece of heavy equipment. The excavator's main components are a bucket, arm, rotating cab, and moving tracks, and its activities are controlled by hydraulics. Excavators are used primarily in the construction business to dig ditches, trenches, foundations, and holes, as well as in the mining industry to quarry and mine river beds.
Construction Requirements
The Hoe is constructed with three important parts like boom, dipper arm, and bucket. Undercarriage is an essential part of heavy-equipment that contains other components necessary for the movement of the excavator. Operators can control excavator operations from the cab using travel pedals, levers, and joysticks. Augers, compactors, hammers, rippers, grapples, etc., are some type attachments used in excavators. The cab is the location from where the operator controls the movement of excavator and it needs to offer excellent visibility to the operator. Solid iron or other materials are used as counterweight in excavators to counterbalance the weight of excavated earth. There are high chances for the heavy equipment to tip over during its operation if a proper counterweight is not included.
Professionalism in the workplace refers to the conduct, behavior, and attitudes expected of individuals while on the job. It encompasses qualities such as reliability, integrity, respect, accountability, and ethical behavior. Professionalism involves adhering to company policies, meeting deadlines, communicating effectively, and maintaining a positive attitude. It also includes dressing appropriately, demonstrating competence in one's role, and treating colleagues, clients, and customers with courtesy and respect. Overall, professionalism contributes to a productive work environment, fosters trust and credibility, and enhances the reputation of individuals and organizations.
Facility management (FM) is a profession that encompasses multiple disciplines to ensure functionality, comfort, safety and efficiency of the built environment by integrating people, place, process and technology.
Working elements of Pneumatic System with Circuits, Safety, InstallationMohammad Azam Khan
A pneumatic circuit is usually designed to implement the desired logics. However, there are several basics circuits, which can be integrated into the final circuit
Classification of Pneumatic Elements Included Valves, CompressorMohammad Azam Khan
Pneumatic systems range from simple air-driven pistons to multiple-actuator mining operations. All pneumatic systems use a source of compressed air to power moving parts, or actuators. Pneumatic systems commonly use compressed atmospheric air, as it is abundant and inexpensive. Atomized oil is added to the air in some blends to ease its passage through mechanical systems. Pneumatic systems are generally preferred over similar, liquid-using hydraulic systems, due to their quietness, ease of use and cost efficiency.
Applications for Pneumatic Controls. Pneumatic systems are used in many places in our everyday world, including train doors, automatic production lines, mechanical clamps, and more. A pneumatic system uses air that is compressed in order to transmit and control energy.
Protecting what needs to be protected with the available technologies!
• Access control is the heart of Information Security!
• The right
• Flow of information between subject and object
• Mechanism to protect the assets!
The Four Major Elements are:
Identification,
Authentication,
Authorization and main is CONTROLLING !!
Fire Alarm Systems fall broadly into two groups - Conventional Systems or Analogue Addressable Systems.
• Conventional Fire Alarm Control System
• Analogue Addressable Fire Alarm System
Intelligent Addressable Fire Alarm System
Closed-circuit television (CCTV) is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point (P2P), point to multipoint, or mesh wireless links.
The main purpose of HVAC is to provide the people working inside the building with “CONDITIONED AIR” so that they will have a comfortable and safe work environment.
A BMS system collects the operating information required for intelligent building management.
It analyses the operation of the building systems by viewing all important temperatures, humidities and equipment status.
To:
Ensures energy savings
Improves building operations
Improves building operations allowing remote control/over-ride where necessary
Improves building management by means reporting and traceability
Improves building management by means reporting and traceability
Improves building management by having a faster reaction time to problems
The pressure energy is fed to the actuator through a number of control block called valves.
• Various type of valve are used in hydraulic system to control or regulate the flow medium.
• Basicallyvalvesareexpectedtocontrol: – Direction
– Pressure
– Flow
– Otherspecialfunctions.
The hydraulic power unit (power supply unit) provides the energy required for the hydraulic installation. Its most important components are
The reservoir (tank) , Drive (electric motor), Hydraulic pump, Pressure relief valve , Filter and cooler.
Hydraulic accumulator is an accessory of a hydraulic system.
A hydraulic accumulator is a pressure storage reservoir in which a non-compressible hydraulic fluid is held under pressure by an external source.
The external source can be a spring, a raised weight, or a compressed gas. An accumulator enables a hydraulic system to cope with extremes of demand using a less powerful pump, to respond more quickly to a temporary demand, and to smooth out pulsations. It is a type of energy storage device.
They have the following primary tasks:
– Power transmission (pressure and motion transmission) – Signal transmission for control
• Secondarytasks:
Lubrication of rotating and translating components to avoid friction and wear
Heat transport, away from the location of heat generation, usually into the reservoir
Transport of particles to the filter
Protection of surfaces from chemical attack, especially corrosion
Condensers and evaporators are basically heat exchangers in which the refrigerant undergoes a phase change. Next to compressors, proper design and selection of condensers and evaporators is very important for satisfactory performance of any refrigeration system.
A throttling device is the generic name of any device or process that simply dissipates pressure energy by irreversibly converting it into thermal energy. Unlike nozzles and diffusers, throttling devices provide no form of useful energy recovery. They merely convert pressure energy into thermal energy through dissipative viscous flow processes. A throttle need not have same inlet and outlet flow velocities, and, therefore, it may have a significant specific kinetic energy changes across it.
A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor.
Kaizen, also known as continuous improvement.
It is a long-term approach to work, that systematically seeks to achieve small, increased changes in processes in order to improve efficiency and quality.
Lean Manufacturing (Concepts, Tools and Quality Management)Mohammad Azam Khan
Lean manufacturing began in Japanese manufacturing in the late 1980s and early 1990s. It is most often associated with Toyota. Its basic usefulness is in providing the tools to identify and eliminate waste throughout the manufacturing process, thereby increasing efficiency and profit. Quality improves as production time and cost are reduced. Toyota added an additional element, evenness of work flow, which helps expose inefficiencies in production that allow companies to redesign manufacturing processes for maximum profit.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
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Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
2. Mohammad Azam Khan
HYDRAULIC PUMP
PUMPS 2
• A pump is the heart of the hydraulic system,convert mechanical energy
into hydraulic energy.
• Main purpose of the pump is to create the flow of oil through the
system & thus assist transfer of power & motion.
• The combined pumping and driving motor unit is known as hydraulic
pump.
• The hydraulic pump takes hydraulic fluid (mostlysome oil) from the
storage tank and delivers it to the rest of the hydraulic circuit.
• In general,the speed of pump is constant and the pump delivers an
equal volume of oil in each revolution.
3. Mohammad Azam Khan
HYDRAULIC PUMP
PUMPS 3
• The hydraulic pumps are characterizedby its flow rate capacity, power
consumption,drive speed, pressure deliveredat the outlet and efficiencyof
the pump.
• The pumps are not 100% efficient.
• The efficiencyof a pump can be specifiedby two ways:
– One is the volumetric efficiency which is the ratio of actual volume of fluid
delivered to the maximum theoretical volume possible.
– Second is power efficiency which is the ratio of output hydraulic power to the
input mechanical/electrical power.
• The typical efficiencyof pumps varies from 90-98%.
4. Mohammad Azam Khan
HYDRAULIC PUMP
PUMPS 4
• The hydraulic pumps can be of two types:
– centrifugal pump
– reciprocating pump
5. Mohammad Azam Khan
CENTRIFUGAL PUMP
• Centrifugal pump uses rotational kinetic
energy to deliverthefluid.
• The rotational energytypically comes
from an engine orelectric motor.
• The fluid enters the pump impeller along or near to the rotating axis, accelerates in the
propeller andflungout to the peripheryby centrifugal forceas shown in figure.
• In centrifugal pump the delivery is not constant and varies according to the outlet pressure.
PUMPS 5
6. Mohammad Azam Khan
CENTRIFUGAL PUMP
PUMPS 6
• These pumps are not suitable for high pressure applications and are
generallyused for low-pressure and high-volume flow applications.
• The maximum pressure capacityis limitedto 20-30 bars.
• Most of the centrifugal pumps are not self-primingand the pump
casing needs to be filledwith liquid before the pump is started.
7. Mohammad Azam Khan
RECIPROCATING OR POSITIVE
DISPLACEMENT PUMP
• The reciprocating pump is a positive plunger pump. It is also known as
positive- displacement pump or piston pump.
• It is often used where relatively small quantity is to be handled and the
delivery pressure is quite large. The construction of these pumps is
similar to the four stroke engine as shown in figure.
PUMPS 7
8. Mohammad Azam Khan
RECIPROCATING OR POSITIVE
DISPLACEMENT PUMP
PUMPS 8
• The crank is driven by some external rotatingmotor.
• The piston of pump reciprocates due to crank rotation.The piston moves
down in one half of crank rotation,the inlet valve opens and fluid enters
into the cylinder.
• In second half crank rotationthe piston moves up, the outlet valve opens
and the fluid moves out from the outlet.
• At a time,only one valve is opened and another is closed so there is no fluid
leakage.
• Depending on the area of cylinder the pump delivers constant volume of
fluid in each cycle independent to the pressure at the output port.
9. Mohammad Azam Khan
CLASSIFICATION
OF
HYDRAULIC PUMPS
• These are mainlyclassifiedintotwo categories:
Pump
Hydrostatic
(Positive displacement)
Hydrodynamic
(Non-Positive displacement)
PUMPS 9
10. Mohammad Azam Khan
POSITIVE
DISPLACEMENT PUMPS
PUMPS 10
• This pump ejects fixed quantity of fluid per revolutionof the pump shaft.
The pump outlet flow is constant & is not depended on the system pressure.
So they are suited for fluid power system.
• Positive displacement pumps must be protected against overload. The
reason is that, it continues to eject fluid (even though it has no place to go)
causing an extremelyrapid build up of pressure.
• Example: Gear pump, Vane pump, piston pump.
11. Mohammad Azam Khan
ADVANTAGES OF POSITIVE
DISPLACEMENT PUMPS
PUMPS 11
• PD pumps are widely used in hydraulic system
• They generate high pressure
• They are relativelysmall & enjoy very high power to weight ratio.
• They have greater flexibilityof performance under varying speed pressure
requirement.
12. Mohammad Azam Khan
CONSTRUCTION & PRINCIPAL
OF PD PUMPS..
PUMPS 12
• Reciprocatingpump are generallycylinders with operatingas a pump.
• They are available in various size, shape & driving mechanisms.Due to
high pressure they are used for specializedapplications.
• A pump using this principle is known as piston pump.
• Rotary pump are most common in oil hydraulics system when low to
medium pressure is the prime consideration.
– The 3 prime types are:
– 1) Gear, 2) Vane, 3) Screw
13. Mohammad Azam Khan
GEAR PUMPS
PUMPS 13
• Gear pump is a robust and simple positive displacement pump.It has two
meshed gears revolving about their respective axes.
• The rigid design of the gears and houses allow for very high
pressures and the abilityto pump highly viscous fluids.
• They are suitable for a wide range of fluids and offer self - priming
performance.
14. Mohammad Azam Khan
GEAR PUMPS
PUMPS 14
• Based upon the design,the gear pumps are classified as:
– External gear pumps
– Lobe pumps
– Internal gear pumps
– Gerotor pumps
15. Mohammad Azam Khan
EXTERNAL GEAR PUMP
PUMPS 15
• External gear pumps have two matinggear in a closed fitted
housing. One of the gear is connected to a drive shaft connected to
the prime mover.
• The 2nd one, the follower gear is driven as it meshes with the driver
gear.
20. Mohammad Azam Khan
GENERALLY GEAR PUMPS
ARE USED TO PUMP
PUMPS 20
• Petrochemicals:Diesel oil, crude oil, lube oil etc.
• Chemicals: Sodium silicate,acids,plastics,mixed chemicals etc.
• Paint and ink
• Resins and adhesives
• Pulp and paper: acid, soap, lye, black liquor, lime,sludge etc.
• Food: Chocolate, cacao butter, fillers,sugar, vegetable fats and oils,
animal food etc.
21. Mohammad Azam Khan
PISTON PUMPS
PUMPS 21
• Piston pumps are meant for the high-pressure applications. These pumps
have high efficiency and simple design and needs lower maintenance.
• These pumps convert the rotary motion of the input shaft to the
reciprocating motion of the piston. These pumps work similar to the
four stroke engines.
• They work on the principle that a reciprocating piston draws fluid inside
the cylinder when the piston retracts in a cylinder bore and discharge the
fluid when it extends.
• These pumpsare positive displacement pump and can be used for both
liquids and gases.
22. • Piston pumps are basicallyof two types:
– Axial piston pumps
• Bent axis piston pumps
• Swash plate axial piston pump
– Radial piston pumps
Mohammad Azam Khan
PISTON PUMPS TYPES
PUMPS 22
23. • Hand pumps are basicallyof two types:
– Single Stroke
– Double Stroke
Mohammad Azam Khan
HAND PUMPS
PUMPS 23
24. Mohammad Azam Khan
AXIAL PISTON PUMP
PUMPS 24
• Axial piston pumps are positive displacement pumps which converts
rotary motionof the input shaft into an axial reciprocatingmotionof
the pistons.
• These pumps have a number of pistons (usuallyan odd number) in a
circular array within a housing which is commonly referred to as a
cylinder block, rotor or barrel.
25. BENT AXIS PUMP
Bent axis pumps, axial piston pumps and motors using the bent axis principle, fixed
or adjustable displacement, exists in two different basic designs. The Thoma-principle
(engineer Hans Thoma, Germany, patent 1935) with max 25 degrees angle and the
Wahlmark-principle (Gunnar Axel Wahlmark, patent 1960) with spherical-shaped
pistons in one piece with the piston rod, piston rings, and maximum 40 degrees
between the driveshaft centreline and pistons (Volvo Hydraulics Co.). These have the
best efficiency of all pumps. Although in general the largest displacements are
approximately one litre per revolution.
26. RADIAL PISTON/PLUNGER PUMP
A radial piston pump is
a form of hydraulic
pump.
The working pistons
extend in a radial
directionsymmetrically
around the drive shaft,
in contrast to the
axial piston pump.
29. SCREW PUMP
Screw Pump (fixed displacement) consist of two Archimedes’ screw that
intermesh and are enclosed within the same chamber. These pumps are
used for high flows at relatively low pressure (max 100 bars
(10,000 kPa)). 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 efficiencyis not high.
30. 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.
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.
SCREW PUMP
31. Mohammad Azam Khan
COMBINATION PUMP
PUMPS 31
• Two basic requirements for load liftingor
load applying by a hydraulic ram.
• First, there is a need of large volume of fluid
at a low pressure when the cylinder extends
or retracts.The low pressure is requiredto
overcome the frictional resistance.
• The second requirement is that a high
pressure is needed, when the load is
gripped.
33. Mohammad Azam Khan
COMBINATION PUMP
PUMPS 33
• In this system two separate pumps are driven by a common electrical
motor.
• Pump P1 is a high pressure low volume pump and pump P2 is a high
volume low pressure pump.
• The hydraulic system is associatedwith relief valves RV1 and RV2 and a
one-way check valve CV1.
• This kind of arrangement allows the fluid flow from left to right.
• This kind of arrangement saves energy as the large volume of fluidfrom
pump P2 is returnedto the tank at a very low pressure, and only a small
volume of fluidfrom pump P1 is returnedat a high pressure.