Screening device for wet screening of paper fiber suspensions
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United States of America Patent
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May 25, 2010
Grant Date -
Apr 19, 2007
app pub date -
Sep 29, 2006
filing date -
Oct 19, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A screening device for the wet screening of a paper fiber suspension comprising at least one screen plate having a plurality of screen openings, a support structure being detachably attachable to the screen plate, a rotor movable adjacent the screen plate and an outlet opening for a portion of the paper fiber suspension passing the screen openings The support structure of the device is characterized by an outer support ring and an inner support ring and at least one middle support element arranged radially between the inner and outer support rings to support the at least one screen plate. Elastic pre-stressing against the screen plate is generated, and as a result of the elastic pre-stressing, the screen plate exerts compressive forces on at least one radially intermediate support element and respectively exerts tensile forces both on the inner support ring and on the outer support ring.
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