Apparatus for filtration of a suspension
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United States of America Patent
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Aug 29, 1989
Grant Date -
N/A
app pub date -
Jul 14, 1988
filing date -
Jul 14, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a self-cleaning filter in which the suspension to be filtered is introduced into the filter media at a lower portion of the apparatus. The dirtied filter media flows out the bottom of the apparatus by gravity, while the material being filtered flows upwardly through the filter media into an annular chamber, over a weir and out an outlet pipe. The dirty filter media is mixed with clarified liquid that is received from a confined chamber in the upper portion of the filtering apparatus and the slurry so formed flows into the inlet of a pump. The pump scours the material acting to partially separate the liquid and particulate from the filter material. The slurry is then pumped up into a separator wherein further separation takes place with the liquid and particulate matter being directed out of the separator back for reprocessing and the clean filter medium is reintroduced into the filtering apparatus.
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