| 摘要 |
PROBLEM TO BE SOLVED: To provide a water treatment device for shortening a washing time, by simultaneously washing respective filters, in a two-stage type water treatment device having a coarse particle filter and a fine particle filter.SOLUTION: A water treatment device comprises a first filtration device 2, a second filtration device 3 communicating with a rear stage of the first filtration device 2, a selector valve 8 capable of selectively switching a water passage in response to filtration treatment, backwash treatment and rinsing treatment in an upper part of the first filtration device 2 and a switch for detecting a position of the backwash treatment in the selector valve 8, and a control device 4 is constituted for operating with a detergent input port 14 provided in the second filtration device 3 and a driving cover 15 capable of sealing the detergent input port 14 by interlocking with a position of the selector valve 8, a motor 16 for opening-closing the driving cover 15, a drain port 17 provided in a bottom part of a second casing 12 and capable of draining water inside of the casing and an electric valve 18 capable of adjusting an opening of the drain port 17.SELECTED DRAWING: Figure 1 |
