creation of fluid flow pump
DESCRIPTION
This is much understanding to clear doubt about hydraulics pump.TRANSCRIPT
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Creation of fluid flow : PumpObjectives :Distinguish between positive and non-positive displacement pumpsUnderstand the principle of operation of gear, vane and piston pumpsDifferentiate between fixed and variable displacement pumps, external andinternal gear pumps as well as axial and radial piston pumpsExplain how pressure-compensated pumps workIdentify the various types of pumps used in hydraulicsSelect and size pumps for various hydraulic applicationsCarry out basic maintenance activities on the pumps.
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Principle of operation
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Pump classification
Positive displacement pumps. Non-positive displacement pumps and
GEAR PUMP-INTERNAL-EXTERNAL-GEROTER
RESIPROCATINGPISTON PUMP
SCREW PUMP
ROTARY
VANE PUMP
FIXED DISP. VARIABLE
UNBALANCEBALANCED
RADIAL PISTON AXIAL
STATIONARY CYLINDER
STA. PISTON
BENT AXIS INLINE
VARIABLE SWASH PLATE CAMDRIVEN
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Non-positive displacement pumps
hydro-dynamic pumpfluid is displaced and transferred usingthe inertia of the fluid in motionLow Initial Cost & maintenance costOperated quietlyAll types of fluid like sludge and slurriesHigh reliabilitySimplicity of operation
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Positive displacementhydrostatic pumpspumps discharge a fixed quantity of oil per revolutionCapability to generate high pressuresHigh volumetric efficiencySmall and compact with high power to weight ratioRelatively smaller changes in efficiency throughout the pressure rangeWider operating range i.e. the capability to operate over a wide pressure andspeed range.
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External gear pump
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Internal gear pump
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Lobe pump
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Gerotor pump
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Vane pumps
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Balanced vane pump
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Variable displacement vane pump
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Pressure compensation in variable displacement vane pumps
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Simple circuit with variable displacement pump.
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Simple circuit with fixed displacement pump
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Piston pumpBent-axis piston pumps
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