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 set up rotor (2), vanes that move radially under spring force (3) and the inlet and outlet (4). … The Rotor moves by using a motor attached to it.

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

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

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