Method and apparatus for pumping fibre suspensions
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United States of America Patent
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-
Aug 8, 1989
Issued Date -
N/A
app pub date -
Dec 10, 1987
filing date -
Apr 10, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and a device for pumping fibre suspensions of high consistency are described. Shear forces disrupting fibre flocs are induced in the front of the impeller in a centrifugal pump which fluidize the fibre suspension thus converting it into an easily pumpable state. This is effected by an inlet part of the pump having recesses and/or lobes in its inner surface in front of the impeller which cooperate with a rotor having an outer surface in which there are lobes. The rotor is disposed into the outlet part of the vessel during operation.
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