Duplex combined vacuum pump for negative pressure suction device

The invention discloses a duplex combined vacuum pump for a negative pressure suction device. The duplex combined vacuum pump comprises a base, a sound insulation box, a first vacuum pump and a secondvacuum pump, the sound insulation box is fixedly installed at the top of the base, the first vacuum pump and the second vacuum pump are both arranged in the sound insulation box, and a first drivingmotor is fixedly installed in the middle of the top of the base and located in an inner cavity of the sound insulation box. The invention relates to the field of medical instruments. According to theduplex combined vacuum pump for the negative pressure suction device, two groups of vacuum pump equipment are arranged in the sound insulation box, the noise during the operation of the vacuum pumps is well isolated, and meanwhile, vacuum pump equipment is well protected. When the vacuum pumps need to be overhauled, the vacuum pumps can be rapidly moved out of the box body, use of an operator is facilitated. When the device