Method and apparatus for pumping a material and a rotor for...

Details Method and apparatus for pumping a material and a rotor for... Method and apparatus for pumping a material and a rotor for...

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 7/04 (2006.01) D21D 5/26 (2006.01) F04D 29/22 (2006.01)

Patent

CA 2356527

The present invention relates to a method and apparatus for pumping a material and a rotor used in said apparatus. Especially preferably the method, apparatus and rotor according to the invention are suitable for pumping thick, gas-containing, the gas in most cases being air, fiber suspensions of the wood processing industry. The method, apparatus and rotor (522) of the invention are characterized in that the pulp in question is pumped by means of a centrifugal pump utilizing a rotor (522), the blades (562) of which have been twisted so that their pitch changes along an essential part of the length of the rotor (522).

La présente invention concerne un procédé et un appareil permettant de pomper une substance, ainsi qu'un rotor utilisé dans ledit appareil. Le procédé, l'appareil, et le rotor de cette invention permettent en particulier de pomper des suspensions fibreuses épaisses contenant un gaz, qui est en général de l'air, et ce notamment dans l'industrie de transformation du bois. Le procédé, l'appareil, et le rotor (522) de cette invention se caractérisent par le fait que la pâte est pompée à l'aide d'une pompe centrifuge munie d'un rotor (522), les pales (562) de ce rotor étant torsadées de sorte que leur pas change le long d'une partie essentielle de la longueur dudit rotor (522).

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