JPS57150418A - Open type stereo filtering device - Google Patents

Open type stereo filtering device

Info

Publication number
JPS57150418A
JPS57150418A JP56035883A JP3588381A JPS57150418A JP S57150418 A JPS57150418 A JP S57150418A JP 56035883 A JP56035883 A JP 56035883A JP 3588381 A JP3588381 A JP 3588381A JP S57150418 A JPS57150418 A JP S57150418A
Authority
JP
Japan
Prior art keywords
water
filtering
air
cleaning
backwashing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP56035883A
Other languages
Japanese (ja)
Other versions
JPS5927606B2 (en
Inventor
Yoshihiko Ueda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokai Rika Service Co Ltd
Original Assignee
Takara Industries Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takara Industries Co Ltd filed Critical Takara Industries Co Ltd
Priority to JP56035883A priority Critical patent/JPS5927606B2/en
Publication of JPS57150418A publication Critical patent/JPS57150418A/en
Publication of JPS5927606B2 publication Critical patent/JPS5927606B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Filtration Of Liquid (AREA)

Abstract

PURPOSE: To reduce manufacturing cost, to facilitate observation, control and manufacture, and to obtain an energy-saving, labor-saving stereo filtering device.
CONSTITUTION: Raw water on the sand surface flowed in from a raw water inflow port 4 is filtered while flowing dowbward and upward in the sand layer 2 to a strainer 12 by negative pressure difference of the strainer 12 caused by starting of a pump 14. When it is clogged by continuous operation of filtering, cleaning operation is started. Air for cleaning is blown in through a blowing tube 7 and at the same time, a small quantity of water that will block the tunnel hole of air is poured out for 1W2min from a backwashing and upward flow water supply tube 6. Then, air is stopped and a sufficient quantity of water is poured out from above-mentioned tube 6, and backwashing is made for 2W3min When cleaning is completed, the pump 14 is started to resume filtering, and filtered water is returned to the pond and circulated for filtering. Thus, suspended matters are caught and removed and water is made clear.
COPYRIGHT: (C)1982,JPO&Japio
JP56035883A 1981-03-11 1981-03-11 filtration device Expired JPS5927606B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56035883A JPS5927606B2 (en) 1981-03-11 1981-03-11 filtration device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56035883A JPS5927606B2 (en) 1981-03-11 1981-03-11 filtration device

Publications (2)

Publication Number Publication Date
JPS57150418A true JPS57150418A (en) 1982-09-17
JPS5927606B2 JPS5927606B2 (en) 1984-07-06

Family

ID=12454399

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56035883A Expired JPS5927606B2 (en) 1981-03-11 1981-03-11 filtration device

Country Status (1)

Country Link
JP (1) JPS5927606B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5017939A (en) * 1989-09-26 1991-05-21 Hughes Aircraft Company Two layer matching dielectrics for radomes and lenses for wide angles of incidence

Also Published As

Publication number Publication date
JPS5927606B2 (en) 1984-07-06

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