The plunger vacuum pump is an improved vacuum pump designed and produced independently. Its temperature rise is lower than that of the vane vacuum pump, wear is slower, and noise is relatively lower; Due to the dual chamber opposed structure adopted by the piston vacuum pump, it can still have a certain vacuum extraction ability when one chamber fails. Increase the reliability of the vacuum pump. Extend the service life of the vacuum pump, reduce noise, and reduce vibration caused by the eccentric mechanism through design. After installation, there is basically no vibration felt.