The invention relates to a force-eliminate pool bottom hydraulic automatic discharge device, which can solve the problem of high cost. wherein, the discharge holes are arranged at the bottom plate, which are embedded with hydraulic automatic discharge valves formed by tubes, float cover and brake top cover; the tubes are embedded into he discharge holes, whose inner wall has through slide channels; the float cover has matched slide grooves and inside the tube; the brake top cover is fixed above the tube with float cover brake foot. The invention can avoid constructing discharge porch and deep well, to reduce the cost and time, while each bottom plate needs 1 or 2 discharge hole. The discharge valve can sense the water than 3.4cm, and when the pressure is higher than this water, the float cover automatically open to release the pressure. |