Draining device for building engineering

The invention discloses a draining device for building engineering. The device comprises a sewage pump base, a noise eliminator, a motor, a motor cover, a sewage disposal box, a water outlet, a flange, a second gear, a pulverizing box and a water inlet; the motor cover is arranged on the surface of one side of the sewage pump base, and the motor is arranged in the motor cover. the pulverizing boxis arranged, soil and gravels are pulverized through the pulverizing box, and the problem that when the soil and the gravels pass through the sewage disposal pump, internal blockage is caused is solved, the phenomenon that due to blockage, a whole sewage pump is burnt out is effectively avoided, work efficiency is improved, the service life of the sewage pump is prolonged, the noise eliminator isarranged, through the noise eliminator, hum of the motor is eliminated, the noise reduction effect is achieved, a small tool containing cabinet is arranged, some simple mechanical tightening or maintaining tools can be placed