Claims
- 1. A method of fluidizing and pumping a fiber suspension with a centrifugal pump in the fluidized state; said pump having an inlet which has a conduit; a housing, an impeller with vames, an outlet and a non-round rotor which is located in the inlet of the pump, the inlet having recesses on its surface, which comprises feeding said fiber suspension into the conduit of the inlet; causing the rotor to rotate, bringing the fiber suspension into rotating motion in the inlet of the pump, said rotating motion having alternate flow components towards and away from the rotation axis of the rotor whereby shear forces are generated in the inlet of the pump which disrupt the fiber-to-fiber bonds whereby the fiber suspension is fludized, becomes pumpable and flows to the impeller in a fluidized state.
- 2. A pump for fluidizing a fiber suspension and pumping the fiber suspension in the fluidized state which comprises an inlet having a non-circular cross-section, and recesses in the inlet, the cross-section of the inlet alternately decreasing and increasing, a housing, an outlet, an impeller having impeller vanes and means located in the inlet for subjecting the fiber suspension to shear forces in the inlet, which means comprise a rotor, said rotor having a non-round cross-section.
Priority Claims (1)
Number |
Date |
Country |
Kind |
771541 |
May 1977 |
FIX |
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Parent Case Info
This application is a continuation-in-part of U.S. Ser. No. 903,494, filed May 8, 1978, now abandoned.
US Referenced Citations (2)
Foreign Referenced Citations (5)
Number |
Date |
Country |
176507 |
Mar 1953 |
ATX |
1211905 |
Mar 1966 |
DEX |
2818540 |
Nov 1978 |
DEX |
45412 |
Feb 1962 |
PLX |
258773 |
Nov 1970 |
SUX |
Non-Patent Literature Citations (1)
Entry |
Sence, L. H.; Centrifugal Pumps for Paper Stock Handling, Chemical 26, 4(1960), 12, pp. 22-36. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
903494 |
May 1978 |
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