Rotary Vane Vacuum Pump

A rotary vane vacuum pump is an oil-sealed rotary displacement pump. The pumping system consists of a casing (1), an eccentrically installed rotor (2), vanes that move radially under spring pressure (3) and the inlet and wall plug (4). … The Rotor movements by using a motor mounted on it.

Uses. Vane pumps are generally used as high-pressure hydraulic pumps and in automobiles, including supercharging, power-steering, air conditioning and automatic-transmitting pumps. Pumps for mid-range pressures include applications such as for example carbonators for fountain soft-drink dispensers and espresso coffee machines.

The easiest vane pump has a circular rotor rotating inside a larger circular cavity. The centers of the two circles are offset, causing eccentricity. … The actions of the vane drives out the same volume of liquid with each rotation. Multistage rotary-vane vacuum pumps can attain pressures only 10 mbar (0.0001 Pa).

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