Rotary vane vacuum pump

Rotary vane vacuum pump can extract the dry gas from the sealed container. If it is equipped with a gas ballast device, it can also extract a certain amount of condensable gas. But it is not suitable for the extraction of oxygen-rich, corrosive to metals, chemical reactions to pump oil, and gas containing particulate dust.

Rotary vane vacuum pump is mainly composed of pump body, rotor, rotary vane, end cover, spring and so on. A rotor is eccentrically installed in the cavity of the rotary vane pump. The outer circle of the rotor is tangent to the inner surface of the pump cavity (there is a small gap between the two), and two rotary vanes with springs are installed in the rotor slot.

When rotating, the tip of the rotary blade keeps contact with the inner wall of the pump cavity by centrifugal force and spring tension, and the rotary rotor drives the rotary blade to slide along the inner wall of the pump cavity.