PURIFYING DEVICE OF BATHTUB

摘要

PURPOSE:To increase a filtering and circulating flow rate and to enhance filtering capacity by reducing pressure loss when hot water is passed through a physical filter tank and a biological filter tank to be filtered. CONSTITUTION:The suction port 2 and emitting port 3 provided to a bathtub 1 are connected by a jet passage 4 and a jet pump 5 and an intermittent valve 6 are arranged on the way of the jet passage 4 in this order on the side of the suction port 2. One end part of a circulating passage 17 is connected to the jet passage 4 between the suction port 2 and the jet pump 5 and the other end part thereof is connected to the jet passage 3 between the intermittent valve 6 and the emitting port 3 and a circulating pump 8 is arranged to the circulating passage 7. A physical filter tank 9 and a biological filter tank 10 are parallelly connected to the circulating passage 7. By parallelly connecting the physical filter tank 9 and the biological filter tank, pressure loss is prevented.