Waterproof drainage device for construction

The utility model relates to the technical field of water conservancy projects, and discloses a construction waterproof drainage device which comprises a filter box, a water inlet is formed in one side of the filter box, a filter cartridge is installed in the filter box, the filter cartridge is rotationally connected to the interior of the filter box, a servo motor is installed at one end of the filter cartridge, and the other end of the filter cartridge is communicated with a water outlet pipe. According to the waterproof drainage device for construction, the water inlet and the water outlet of the filter box are communicated, drained water enters the filter box, impurities are filtered through the filter cylinder in the filter box and then discharged, the drainage effect is achieved, pipeline blockage is prevented, the filter cylinder is driven by the servo motor to rotate, and the problem that green channel filter holes are prone to blockage due to static filtration is solved; meanwhile, the cleaning brush