Device for cleaning fibrous suspensions for paper production
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United States of America Patent
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Oct 6, 2009
Grant Date -
Aug 30, 2007
app pub date -
Feb 6, 2007
filing date -
Feb 24, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for cleaning a suspension, preferably a fibrous suspension for paper production. The device includes a screen basket, on the exterior surface of which the suspension to be cleaned is supplied and from the interior surface of which the screened accepted stock is released. A housing surrounds the screen basket. The housing includes an inflow for the suspension to be cleaned, an accepted-stock outlet for the cleaned suspension and a reject outlet for impurities. A scraping device rotates on the outside of the screen basket about the screen basket axis and has scraper blades (foils) which scrape along the exterior surface of the screen basket. The scraping device comprises a drum with a cylinder surrounding the screen basket. The cylinder carries a plurality of foils on its inside facing the screen basket.
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