Vacuum washer drum
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United States of America Patent
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-
Aug 18, 2009
Grant Date -
Apr 17, 2008
app pub date -
Dec 10, 2007
filing date -
Sep 24, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum drum washer is designed to enable the use of an end-draining drum for drum lengths exceeding 20 feet. The drum washer includes a cylindrical drum having a mesh screen defining an exterior wall. A plurality of outer filtrate channels are disposed radially inward from the mesh screen. A plurality of inner filtrate channels are disposed radially inward from the outer filtrate channels and extend along generally less than an entire length of the drum. A transfer channel connects the outer filtrate channels and the inner filtrate channels. A plurality of radial drainage chutes are disposed adjacent a head end of the outer and inner filtrate channels, which direct the filtrate to a drain valve.
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