Screw pump rotor and method of reducing slip flow

Details Screw pump rotor and method of reducing slip flow Screw pump rotor and method of reducing slip flow

F - Mech Eng,Light,Heat,Weapons

04

C

F04C 2/16 (2006.01) F04C 18/16 (2006.01) F04C 27/00 (2006.01)

Patent

CA 2619195

A pump rotor for a screw pump includes a shaft, a first set of threads disposed on a portion of an outer surface of the shaft, at least one thread of the first set of threads including a groove disposed on an end portion thereof, and a ring seal disposed on the groove such that the ring seal is configured to protrude outwardly from the groove and to rest against an inner surface of a liner of the screw pump, and the groove is sized so as to allow the ring seal to move radially with respect to the plurality of threads as the rotor is deflected.

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