Vane vacuum pump

The utility model discloses a blade type vacuum pump for vehicle. A rotor that rotates axially is eccentricly arranged in the inner cavity of a pump body and the blade is placed in the corresponding groove of the rotor. The blade is driven by the rotor to rotate with the two ends being pressed onto the internal wall of the pump body and separates the inner cavity of the pump body into a plurality of air-deck charges. The cross section of the inner cavity of the pump body presents an ellipse shape and the blade is composed of two same cuboid plastic members that are symmetrically overlapped with each other and is placed in a corresponding continuous manager on the rotor and separates the inner cavity of the pump body into two air-deck charges. The utility model is only provided with a straight face type blade and the external diameter of the rotor can be made to be smaller. Because the structure of the inner cavity of the pump body is changed, the effective volume of the pump cavity that can be utilized is increased. The pump has a simple structure, runs reliably and has a small energy consumption.