Title:
APPARATUS FOR CLEANING FILTRATION LAYER IN SEAWATER INFILTRATION INTAKE
Document Type and Number:
WIPO Patent Application WO/2013/058009
Kind Code:
A1
Abstract:
[Problem] To provide a cleaning apparatus suitable for removing clogging substances trapped on the surface layer of the sand filtration layer. [Solution] A cleaning apparatus (11) provided with drive wheels (12) as a movement means for moving over the surface of the sand filtration layer. A pump (13) and a jet nozzle (14) are provided as a stirring means for stirring the necessary depth of the surface layer of the sand filtration layer and stirring up the clogging substances along with filter sand into the seawater inside a turbid water suction pit (20). A perforated emulsified water suction tube (15), a pump (16), an ejector (17), and a dilute emulsified water-discharging tube (18) are provided as a suction-discharging means for drawing in the turbid water stirred up into the seawater inside the turbid water suction pit (20) by the stirring means and discharging same to the outside of the turbid water suction pit (20). [Effect] The invention prevents clogging by timely cleaning of the sand filtration layer and can maintain high seawater infiltration rates. Because turbid water containing clogging substances, which is stirred up into the turbid water suction pit, is drawn up and discharged outside of the system, effects on the surrounding environment are also reduced.
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Inventors:
NIIZATO HIDEYUKI (JP)
INOUE TAKAYUKI (JP)
MUKAI KIYOKAZU (JP)
MIMURA HITOSHI (JP)
INOUE TAKAYUKI (JP)
MUKAI KIYOKAZU (JP)
MIMURA HITOSHI (JP)
Application Number:
PCT/JP2012/070532
Publication Date:
April 25, 2013
Filing Date:
August 10, 2012
Export Citation:
Assignee:
HITACHI SHIPBUILDING ENG CO (JP)
NAGAOKA CORP (JP)
NIIZATO HIDEYUKI (JP)
INOUE TAKAYUKI (JP)
MUKAI KIYOKAZU (JP)
MIMURA HITOSHI (JP)
NAGAOKA CORP (JP)
NIIZATO HIDEYUKI (JP)
INOUE TAKAYUKI (JP)
MUKAI KIYOKAZU (JP)
MIMURA HITOSHI (JP)
International Classes:
B01D24/46; B01D24/02; B01D29/62; B03B5/28; E03B3/04
Foreign References:
| JP2003080010A | 2003-03-18 | |||
| JP2005161229A | 2005-06-23 | |||
| JPS5355571A | 1978-05-20 |
Attorney, Agent or Firm:
MIZOGAMI, Tetsuya et al. (JP)
Tetsuya Mizogami (JP)
Tetsuya Mizogami (JP)
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Claims: