To provide a bath water cleaning device capable of smoothly entering bath water to the inside of the bundle of a hollow fiber membrane for cleaning without snarl and interlocking of the hollow fiber membrane and capable of preventing the deterioration of a cleaning performance at the time of washing a precision filter.
In the device, the precision filter 3 is arranged in a filtering tank 2 provided at the bath water cleaning device 1. The nozzle 5 discharging the bath water to the precision filter 3 from a runing water discharge port 4 is provided freely rotatably by a rotary means at the primary side of the precision filter 3. The secondary side of the precision filter 3 is gathered and fixed and also the secondary side of the precision filter 3 and the tip part of the opposite side are wound in a form like spiral with a sewing yarn to support. The outer periphery having more than at least one in the interval from the gathered fixed part 7 of the secondary side of the precision filter 3 to the tip part are freely support oscilatablly.
HAYASHI KAZUTSUGU
TATSUTA SHIGERU
