Method and apparatus for pumping high consistency pulp
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United States of America Patent
Stats
-
Oct 22, 1991
Grant Date -
N/A
app pub date -
Jul 1, 1988
filing date -
Jul 2, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for pumping a liquid-fiber suspension, and specifically for pumping high consistency fiber suspensions in the pump and paper industry. The method of pumping a liquid-fiber suspension includes the moving of the suspension into a pump, separating a portion of the liquid part of the suspension from the liquid-fiber suspension during the pumping operation and directing the separated liquid to the suspension at a point somewhere between a situs in advance of the pump inlet and the pump outlet. This method is enabled by an apparatus, in which at least part of the surfaces of the pump (1) is provided with filter surfaces (6, 7, 8, 9, 10), through which the liquid separated from the suspension is returned either into the pump, directly in front of the suction opening (11) of the pump (1) or to some other suitable place in the vessel containing the suspension.
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