Positive displacement pump type | Example,advantages and PDF

Positive displacement pump type-Rotary pumps and reciprocating pumps.

Example

Gear pump,Vane pump and screw pump.

Types of Positive displacement pump

• Rotary pumps
• Reciprocating pumps

Rotary pumps

• Gear pump
• Vane pump
• Screw pump

Gear pump

• External gears pump
• Internal gears pump

External gears pump

• Spur Q fixed
• Helical Q Fixed

Internal gears pump

• Crescent Q fixed
• Gerotor Q fixed

Vane pump

• Vane in Rotor/Sliding Vanes
• Vane in Stator /Inverted vanes

Pump Vane in Rotor/Sliding Vanes

• Unbalanced-Q fixed/Q variable
• Balanced

Pump Vane in Stator /Inverted vanes

• Q fixed
• Q variable

Hydraulic system,Working principle.

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