Waterproof drainage device for hydraulic engineering construction

The waterproof drainage device for the water conservancy project construction comprises a base, a water pumping tank and a water outlet tank, the water pumping tank and the water outlet tank are fixedly arranged on the two sides of the base, a blow-off pipe is fixedly arranged in the center of the bottom of the water pumping tank, a timing electromagnetic valve is fixedly arranged in the middle ofthe blow-off pipe, and the timing electromagnetic valve is fixedly arranged in the middle of the blow-off pipe. A water pumping pipe is fixedly arranged on the lower portion of the water pumping tank, a connecting pipe is fixedly arranged on the upper portion of the water pumping tank, the other end of the connecting pipe is fixedly connected with a water outlet tank, a water outlet pipe is fixedly arranged on the lower portion of the water outlet tank, and a water pump is fixedly arranged in the middle of the water outlet pipe. Impurities are deposited in the center of the box bottom in a concentrated mode, the timi