WORKING THRORY

As shown in functional diagram:

The rotor, mounted eccentrically in the pump cylinder,has 2 vanes which divide the pump chamber into two different changeable compartments.

When the pump rotor which was driven by the motor clockwise rotated, chamber 1 will such air from small to big, and chamber 2 will complete the transmission of air, then chamber 3 will compress and exhaust air from big to small, and complete a work cycle from suction-compress-exhaust finally, achieve the vacuum of the system.