| 摘要 |
<p>PURPOSE:To easily and surly clean the ceramic granules in a filtration tank by providing a microorganism-filtering device sticking microorganism onto the surface of a carrier such as the ceramic granules and means of changing the flowing path in the microorganism filtering device in a circulating path. CONSTITUTION:When pump 9 in the main body of purifying device of main body 7 is drived, hot water for bathtub is sucked from a suction hole 2 and hot water for the bathtub is introduced into the purifying device main body through a suction pipe 5 in a state hairs, etc., are removed by the hair catcher 8. Further, hot water for the buthtub is filtered by a physical filtration device 10 and also further smaller organic matters are removed by the microorganism filtering device 11 and sterilized by an ultraviolet sterilization device 12 and become completely purified condition. By switching of a switching solenoid valve 18, the flow of the hot water for the bathtub into flow inlet 16a is interrupted, and by flowing out of hot water for the bathtub from each holes 19a in piping 19 through piping 19, flowing path of the hot water for the bathtub in the filtration tank 16 is changed, and for this reason, microorganism proliferated on the surface of the ceramic granules 17 and water scales are removed from the surface of the ceramic granules.</p> |
