Worm centrifuge with centrifugal valve
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United States of America Patent
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Jun 22, 1999
Grant Date -
N/A
app pub date -
May 7, 1997
filing date -
May 7, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A worm centrifuge for separating solids/liquid mixtures is disclosed for overcoming the problems during start-up and shut-down processes that occur when quantity of a liquid is located or remains in the centrifuge drum, particularly the problem of the emergence of liquid at the solids discharge openings during the shut-down process. The inventive centrifuge includes at least one, preferably a plurality of, drum emptying openings distributed over the circumference of the face wall of the centrifuge drum and being positioned radially outside of the liquid discharge openings. The drum emptying openings are each radially crossed by a bore. The bores each include a centrifugal force valve having a spring-loaded closing member adapted to close the drum emptying opening at high drum speed (operating speed) and to open the drum emptying opening at low drum speed.
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