A rotary vane vacuum pump is an oil-sealed rotary displacement pump. The pumping program consists of a casing (1), an eccentrically set up rotor (2), vanes that move radially under spring power (3) and the inlet and outlet (4). … The Rotor movements with the help of a motor attached to it.
Uses. Vane pumps are commonly used as high-pressure hydraulic pumps and in automobiles, including supercharging, power-steering, air conditioning and automatic-transmitting pumps. Pumps for mid-range pressures consist of applications such as carbonators for fountain soft-drink dispensers and espresso coffee machines.
The simplest vane pump includes a circular rotor rotating in the larger circular cavity. The centers of these two circles are offset, leading to eccentricity. … The action of the vane drives out the same volume of liquid with each rotation. Multistage rotary-vane vacuum pumps can attain pressures as low as 10 mbar (0.0001 Pa).