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Creation of fluid flow : Pump
 Objectives :
 Distinguish between positive and non-positive
 displacement pumps
 Understand...
Principle of operation
Pump classification

           Positive displacement pumps.   Non-positive displacement pumps and


  ROTARY
            ...
Non-positive displacement pumps

 hydro-dynamic pump
 fluid is displaced and transferred using
 the inertia of the fluid i...
Positive displacement
 hydrostatic pumps
 pumps discharge a fixed quantity of oil per
 revolution
 Capability to generate ...
External gear pump
Internal gear pump
Lobe pump
Gerotor pump
Vane pumps
Balanced vane pump
Variable displacement vane
pump
Pressure compensation in
variable displacement vane
pumps
Simple circuit with variable
displacement pump.
Simple circuit with fixed
displacement pump
Piston pump
 Bent-axis piston pumps
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
Creation Of Fluid Flow Pump
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Creation Of Fluid Flow Pump

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This is much understanding to clear doubt about hydraulics pump.

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Creation Of Fluid Flow Pump

  1. 1. Creation of fluid flow : Pump Objectives : Distinguish between positive and non-positive displacement pumps Understand the principle of operation of gear, vane and piston pumps Differentiate between fixed and variable displacement pumps, external and internal gear pumps as well as axial and radial piston pumps Explain how pressure-compensated pumps work Identify the various types of pumps used in hydraulics Select and size pumps for various hydraulic applications Carry out basic maintenance activities on the pumps.
  2. 2. Principle of operation
  3. 3. Pump classification Positive displacement pumps. Non-positive displacement pumps and ROTARY RESIPROCATING PISTON PUMP GEAR PUMPSCREW PUMP -INTERNAL -EXTERNAL VANE PUMP -GEROTER AXIAL RADIAL PISTON FIXED DISP. VARIABLE STATIONARY STA. BENT AXIS INLINE CYLINDER PISTON BALANCED UNBALANCE VARIABLE SWASH PLATE CAMDRIVEN
  4. 4. Non-positive displacement pumps hydro-dynamic pump fluid is displaced and transferred using the inertia of the fluid in motion Low Initial Cost & maintenance cost Operated quietly All types of fluid like sludge and slurries High reliability Simplicity of operation
  5. 5. Positive displacement hydrostatic pumps pumps discharge a fixed quantity of oil per revolution Capability to generate high pressures High volumetric efficiency Small and compact with high power to weight ratio Relatively smaller changes in efficiency throughout the pressure range Wider operating range i.e. the capability to operate over a wide pressure and speed range.
  6. 6. External gear pump
  7. 7. Internal gear pump
  8. 8. Lobe pump
  9. 9. Gerotor pump
  10. 10. Vane pumps
  11. 11. Balanced vane pump
  12. 12. Variable displacement vane pump
  13. 13. Pressure compensation in variable displacement vane pumps
  14. 14. Simple circuit with variable displacement pump.
  15. 15. Simple circuit with fixed displacement pump
  16. 16. Piston pump Bent-axis piston pumps

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