F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
103/121
F04D 29/22 (2006.01) F04D 7/04 (2006.01) F04D 29/44 (2006.01) F04D 31/00 (2006.01)
Patent
CA 1315600
17 ABSTRACT A suspension, such as paper pulp, having a consistency of between about 6-20% (i.e. medium consistency) is pumped without the necessity of using a vacuum system to effect gas removal. A hollow shaft having elongated slots in it, has impeller blades disposed on its exterior surface. Connected to the suspension inlet end of the shaft is a hollow boat-type propeller which positively feeds suspension directly to the impeller blades. The propeller is disposed in a vessel having an enlarged cross section with respect to the pump housing, and anti-rotation bars are placed around the propeller in the vessel to prevent rotation of the suspension, so that it is fed by the propeller. The propeller pressurizes any gas separated from the suspension so that it can be removed from the suspension by the pump without a vacuum system.
570481
Gullichsen Johan
Goudreau Gage Dubuc
Kamyr Ab
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