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Pump and it's types
Pumps are devices that move fluids by increasing their mechanical energy, classified mainly into positive displacement and dynamic pumps. Positive displacement pumps include reciprocating and rotary types, such as piston, plunger, and diaphragm pumps, while dynamic pumps mainly consist of centrifugal, axial, and mixed-flow pumps. Each type serves specific uses based on fluid characteristics and desired flow rates or pressures.
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Pump and it's types
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- 2. ❑Pump A pump isa device used to move fluids, such as liquids or slurries. It increases the mechanical energy of the fluid. The additional energy can be used to increase - Velocity (flow rate) Pressure Elevation
- 4. ❑Positive Displacement Pump PositiveDisplacement pumps apply pressure directly to the liquid by a reciprocating piston, or by rotating members. Uses: 1.can handle shear sensitive liquid. 2.Use for high pressure application 3.Use for variable viscosity applications. Types- ➢ Reciprocating pump ➢ Rotary pump
- 5. ➢Reciprocating Pump In Reciprocatingpumps, the chamber is a stationary cylinder that contains a piston or plunger. Types- ➢ Piston Pump ➢ Plunger Pump ➢ Diaphragm Pump
- 8. ❖Plunger pump 1.Have highefficiency. 2.Capable of developing very high pressures. 3.Low and easy maintenance Plunger pump (single acting)
- 11. ❖Diaphragm Pump 1.flexible diaphragmis used (rubber, thermo-plastic, metal). 2. Can be used to make artificial hearts. 3.Can handle highly viscous liquids. 4.Can handle toxic or corrosive liquids. 5. 97% efficient. Diaphragm Pump (single acting)
- 13. ➢Rotary Pump In Rotarypumps, the chamber moves from inlet to discharge and back to the inlet. A wide varietyof rotary pumps are available like gear pumps, lobe pumps, screw pumps, cam pumps, vane pumps. ❖ Most popular: gear pumps ❖ Relatively constant output Types- ➢ Single Rotor ➢ Multiple Rotor
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- 23. Vane pump Consist ofnon metallic vanes that slide into and out of the slots. Each revolution displace a constant volume of liquid Used for low and high viscosity liquids. • LPG • Rerigrants • Ammonia • Liquid carbondioxide • Refined fuels 24 % greater efficiency than gear pump
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- 30. Types of Rotodynamic pumps ➢Centrifugalpumps (radial pumps) ➢Axial pumps ➢mixed flow pumps ➢Turbine pumps
- 31. ❑Dynamic Pump ➢ CentrifugalPumps This pumps generate high rotational velocities, then convert the resulting kinetic energy of the liquid to pressure energy. Use: 1.Centrifugal pumps are generally used where high flow rates and moderate head increases are required. 2. Can handle fluids containing suspended solids
- 33. 14 Centrifugal Pumps How dothey work? • Vanes pass kinetic energy to liquid: liquid rotates and leaves impeller • Volute casing converts kinetic energy into pressure energy
- 34. Centrifugal Pump Open Semi-OpenClosed Impellers Impeller are usually made of stainless steel or bronze.
- 36. Axial flow pumps:- Axialflow pumps differ from radial flow in that the fluid enters and exits along the same direction parallel to the rotating shaft. The fluid is not accelerated but instead "lifted" by the action of the impeller. They may be likened to a propeller spinning in a length of tube. Axial flow pumps operate at much lower pressures and higher flow rates than radial flow pumps.
- 39. Mixed-flow pumps:- Mixed-flow pumpsfunction as a compromise between radial and axial-flow pumps.higher pressures than axial-flow pumps While delivering higher discharges than radial-flow pumps.
- 42. Turbine pump A turbinepump is a centrifugal pump that is mainly used to pump water from deep wells or other underground and man-made bodes of water to water distribution systems. fluid enters "eye" of the impeller. constant head and high pressure uniform flow.
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