Title:
PRESSURE-TYPE FILTRATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/159080
Kind Code:
A1
Abstract:
This pressure-type filtration device comprises: a plurality of filtration chambers (70) arranged in a circular shape, each filtration chamber including a filtration material therein; a raw water chamber (71) arranged in the center of the plurality of filtration chambers (70); a flow path system that can take a first state for connecting the raw water chamber (71) and respective raw water inlets (70a) of the plurality of filtration chambers (70) wherein raw water in the raw water chamber (71) is distributed and supplied to the respective raw water inlets of the plurality of filtration chambers (70), and a second state in which the raw water inlet of the filtration chamber (70) to be backwashed and a water drainage pipe are connected and raw water in the raw water chamber (71) is distributed and supplied only to the respective raw water inlets of the filtration chambers (70) other than the filtration chamber (70) to be backwashed; and a clean water chamber (73) capable of functioning as a filtered water path through which filtered water from the filtration chambers (70) other than the filtration chamber (70) to be backwashed is introduced to a filtered water outlet of the filtration chamber (70) to be backwashed.
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Inventors:
SAKURAI MASANOBU (JP)
Application Number:
PCT/JP2016/060393
Publication Date:
October 06, 2016
Filing Date:
March 30, 2016
Export Citation:
Assignee:
HITACHI SHIPBUILDING ENG CO (JP)
International Classes:
B01D29/66; B01D24/00; B01D24/40; B01D24/42; B01D24/46; B01D24/48; B01D29/60; B01D29/92
Foreign References:
| US6413423B1 | 2002-07-02 | |||
| JPS5538168B2 | 1980-10-02 | |||
| JPS5154140Y2 | 1976-12-24 | |||
| JPS4534915B1 | ||||
| JPS4633464B1 | ||||
| JPH09206515A | 1997-08-12 | |||
| JPH11156115A | 1999-06-15 |
Attorney, Agent or Firm:
KAWAGUCHI, Yoshiyuki et al. (JP)
Yoshiyuki Kawaguchi (JP)
Yoshiyuki Kawaguchi (JP)
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