WATER SUPPLY DEVICE FOR GROUNDWATER RECYCLING

摘要

PURPOSE: A water supply device for a sump tank for recycling underground water is provided to prevent damage to a water supply pump by removing foreign materials from a filter net of the water supply pump. CONSTITUTION: A water supply device for a sump tank for recycling underground water comprises a water supply pump(2), a pressure tank(4) for pump operation, an air chamber(9), a connection pipe(11), and an overcharge air exhaust port(15). The water supply pump is installed inside a sump tank(20) and has a filter net(2a). A first discharge pipe(3) is connected to the water supply pump. The pressure tank is installed outside the sump tank and has a pressure switch. The pressure switch operates or stops the sump tank. A second discharge pipe(5) is connected to the pressure tank. The air chamber is installed on the top end of the first discharge pipe and has an air suction check valve(9a). The connection pipe is connected between the pressure tank and the air chamber through a backflow prevention check valve(10). The overcharge air exhaust port is installed on the top of the pressure tank.