Vane pumps are a type of rotary positive displacement pump. A set of paddle-like vanes, mounted radially on a cylindrical rotor, create a number of compartments in which fluid can be trapped and transported through the system.

When the pump is stationary, the vanes rest in their slots. However, when the shaft rotates at sufficient speed (about 700 rpm) the vanes travel outwards under centrifugal force, maintaining close contact with a perforated cam ring around the casing wall.

Sliding vanes are often made of materials capable of self-lubrication so they can slide easily inside their rotor slots and against the casing. Our specialized carbon graphite material is the ideal vane material for dry running oil-less vacuum pumps and compressors. Dry running pump vanes have many advantages over other types of pumps. They offer smooth – pulse free air flow, require no lubrication with minimal noise and vibration in a compact design.

Pure Carbon Graphite:

High strength, high temperature resistance, oxidation resistance, low resistivity, corrosion resistance, precision machining …

Carbon Graphite with Resin Impregnated:

Better wear resistance, self-lubricating properties, excellent mechanical properties, arc resistance, excellent alkali and acid resistance …

REFERENCE

https://www.helwigcarbon.com/mechanical-carbons/vanes-and-rotors/

https://www.michael-smith-engineers.co.uk/resources/useful-info/vane-pumps

https://electricalworkbook.com/vane-pump/