Centrifuge
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United States of America Patent
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-
Dec 7, 2004
Grant Date -
Feb 5, 2004
app pub date -
Jun 9, 2003
filing date -
Jan 19, 2001
priority date (Note) -
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Abstract
A centrifuge that includes a centrifugal drum having a drum part, a centrifuge chamber bottom, a drum cover, solid matter discharge openings in a jacket area of a drum bottom part, and a piston valve axially movably disposed in the drum bottom part. The piston valve is held in a closed position by springs supported at the drum bottom part. The piston valve is movable by a control medium introduced into an opening chamber between the piston valve and the centrifuge chamber bottom. The control medium can overcome the springs and open the solid matter discharge openings. The springs are made from an unalloyed spring steel and are substantially encapsulated by sleeves made of corrosion resistant material. The sleeves project on one side into the piston valve and, on the other side, into bores of a bottom area of the drum bottom part.
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