Title:
FILTRATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/165490
Kind Code:
A1
Abstract:
Provided is a filtration device having a plurality of filters in which the filters can be backwashed by purified water in a simple operation. The filtration device (1) switches between a water purification mode, a first backwashing mode, and a second backwashing mode in accordance with the pivot position of a valve element (6). During the first backwashing mode, a source water inlet (51) is in communication with a second source water through-port (53), and first and second purified water through-ports (54, 55) are blocked from communication with a purified water outlet (56), whereby purified water from a second filter (3) is backwashed through the first filter (2) and the drain water is discharged from a drain water outlet (57). During the second backwashing mode, the source water inlet (51) is in communication with a first source water through-port (52), and first and second purified water through-ports (53, 54) are blocked from communication with the purified water outlet (56), whereby purified was from the first filter (2) is backwashed through the second filter (3), and the drain water is discharged from the drain water outlet (57).
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Inventors:
SASAKI TSUTOMU (JP)
SASAKI SATOSHI (JP)
SASAKI SATOSHI (JP)
Application Number:
PCT/JP2012/063961
Publication Date:
December 06, 2012
Filing Date:
May 30, 2012
Export Citation:
Assignee:
BASIC CO LTD (JP)
SASAKI TSUTOMU (JP)
SASAKI SATOSHI (JP)
SASAKI TSUTOMU (JP)
SASAKI SATOSHI (JP)
International Classes:
B01D24/48; B01D29/60; B01D29/66; B01D36/00; C02F1/28; C02F1/44
Foreign References:
| JPH03224609A | 1991-10-03 | |||
| JP2002263412A | 2002-09-17 | |||
| JP2003093808A | 2003-04-02 | |||
| JPH06313504A | 1994-11-08 | |||
| JP2010504209A | 2010-02-12 | |||
| JPS63189315U | 1988-12-06 | |||
| JPH119909A | 1999-01-19 |
Attorney, Agent or Firm:
FUJIKAWA TSUNEO (JP)
Tsuneo Fujikawa (JP)
Tsuneo Fujikawa (JP)
Download PDF:
Claims:
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