Negative pressure constant control system for hazardous waste warehouse

The utility model relates to the technical field of hazardous waste warehouse negative pressure treatment, in particular to a hazardous waste warehouse negative pressure constant control system. According to the technical scheme, the device comprises a first tank body, a base and a second tank body, a warehouse body and a limiting frame are welded to the top end face of the base, a through hole is formed in the limiting frame, the first tank body and the second tank body are welded in the through hole, and pressure sensors are fixedly embedded in the first tank body and the second tank body; fixing frames are welded to the first tank body and the second tank body correspondingly, negative pressure pumps are welded to the rear end faces of the fixing frames, air outlet pipes are arranged on the negative pressure pumps, the ends, away from the negative pressure pumps, of the air outlet pipes are fixedly embedded into the first tank body and the second tank body, and fixing pipes are fixedly embedded into the si