The rotor installed eccentrically inside the rotary vane vacuum pump is tangent to the fixed surface of the stator, and two (or more) rotary vanes slide in the rotor slot (usually radially) and make contact with the inner wall of the stator, dividing the pump chamber into several variable volume rotary variable volume vacuum pumps. Usually, the gap between the rotary vane and the pump chamber is sealed with oil, so rotary vane vacuum pumps are generally oil sealed mechanical vacuum pumps.
Application
Its working pressure range is 101325-1.33 × 10-2 (Pa), which belongs to low vacuum pumps. It can be used alone or as a pre pump for other high vacuum pumps or ultra-high vacuum pumps. It has been widely used in production and scientific research departments such as metallurgy, machinery, military industry, electronics, chemical industry, light industry, petroleum, and medicine.
