A rotary vane vacuum pump can be an oil-sealed rotary displacement pump. The pumping program consists of a casing (1), an eccentrically installed rotor (2), vanes that move radially under springtime 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 conditioning and automatic-transmission pumps. Pumps for mid-range pressures include applications such as for example carbonators for fountain soft-drink dispensers and espresso coffee machines.
The simplest vane pump has a circular rotor rotating in the larger circular cavity. The centers of these two circles are offset, causing eccentricity. … The action of the vane drives out the same level of liquid with each rotation. Multistage rotary-vane vacuum pumps can attain pressures only 10 mbar (0.0001 Pa).