XD series as a single-stage rotary vane vacuum pump mechanical structure simple, easy, convenient maintenance access to a wide range of vacuum in the use of capital equipment. It pumps the same volume of work and the general principles, Shaft is a concerted installed in the pump body in a position eccentric rotor component, Journal of the three rotor blade will pump cavity divided into three studios, since gas was pumped into the suction mouth. break through strainer into the pump room and check valve, rotor, The studio itself complete with suction inlet isolation rooms will pump gas compression and access to the box and exhaust gas emissions. Rotating week repetition operation.