MULTICAGE-TYPE DEVICE FOR FILTERING BALLAST WATER FOR AUTOMATICALLY CONTROLLING SEQUENTIAL BACKWASHING AND METHOD FOR SAME
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United States of America Patent
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Issued Date -
Sep 4, 2014
app pub date -
Oct 20, 2011
filing date -
Oct 14, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A device for filtering for treating ballast water way and to a method for controlling same, and to a multicage-type device for filtering ballast water which automatically controls sequential backwashing and a method for same. In the multicage-type device for filtering ballast water, an automatic cleaning portion in each filtering device, in which differential pressure of at least a specific range with respect to pressure inside a body is generated, from a plurality of filtering units in the device for filtering, is sequentially actuated under the control of a control portion, thereby allowing smooth backwashing by preventing increase of back pressure during backwashing of foreign substances, and increasing repair/maintenance efficiency by installing a second pressure sensor for measuring pressure inside a filter in each of the filtering units via a pressure measurement aperture that penetrates an upper portion cover plate that covers a filter inlet aperture on the body.
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