Permeable capacity tester for pervious concrete

The utility model discloses a tester for the water permeability of pervious concrete. The tester comprises a base, a water collecting tank, a cover body, an inner threaded pipe, a motor, a screw rod, a guide rod, a measuring cylinder and a connecting pipe, the water collecting tank is transparent and is fixed on the base, the cover body is positioned above the water collecting tank, and a lower port of the cover body is opposite to an upper port of the water collecting tank. The inner threaded pipe is vertically fixed to the center of the top face of the cover body. The motor is fixed to the portion, above the inner threaded pipe, of the supporting frame, the upper end of the lead screw is connected with a motor shaft of the motor, and the lead screw is in threaded connection with the inner threaded pipe. The upper end of the guide rod is fixed on the support frame, and the lower end of the guide rod penetrates through the top surface of the cover body in a sliding manner and is positioned in the inner cavity