Method for backwashing filter

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United States of America Patent

PATENT NO 9731240
SERIAL NO

14073529

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The reliability of backwashing valves constituted of first backwashing valves and second backwashing valves is ensured. A first backwashing valve (backwashing-gas rear valve) (7) that controls gas for backwashing and a second backwashing valve (backwashing-gas front valve) (6) that operates at slower speed than the first backwashing valve (7) are disposed, in a series including two or more thereof, at backwashing-gas introducing pipes individually provided for each of the filter blocks.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI HEAVY INDUSTRIES LTDTOKYO 1008332

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hashimoto, Takao Tokyo, JP 81 1764
Kitagawa, Yuichiro Nagasaki, JP 19 83
Koyama, Yoshinori Nagasaki, JP 67 468
Shinada, Osamu Nagasaki, JP 27 83

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