Method for controlling pressurized screening devices and pressurized screening device
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United States of America Patent
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Apr 7, 1992
Grant Date -
N/A
app pub date -
Jun 5, 1990
filing date -
Jun 5, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method for controlling pressurized screening devices in which fiber pulp is fed to the pressurized screening device and is divided into the accepted portion of the fiber pulp passing through perforations of a cylindrical screenplate and the rejected portion which is removed from the screenplate, the perforated screenplate being treated by a device movable relative thereto and rotatable around the center axis of the screenplate, the fiber pulp being fed parallel with the center axis of the screenplate to baffle blade assembly comprising at least two baffle blades and also being rotatable around the center axis, wherein the speed of rotation of the baffle blade assembly and/or the radial dimension of the baffle blades are adjustable to control the screening. The invention additionally relates to pressurized screening devices for implementing the method.
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