SUBMERSIBLE PUMP Russian patent published in 2011 - IPC F04D13/08 F04D3/02 F04D7/00

Abstract RU 2423622 C2

FIELD: engines and pumps.

SUBSTANCE: pump comprises a body 1, a rotor 2 in the form of a screw 3 with blades installed on a shaft and placed into a fixed bush 4 with blades of opposite thread direction, and having length that exceeds length of the bush 4. The screw 3 is arranged as longer than the bush 4 in direction of an open space by value of the step S of the screw 3 blades thread. The protruding part of the screw 3 has a larger diameter D_s compared to the outer diameter D_b of the fixed bushing 4 blades.

EFFECT: invention makes it possible to start the pump in case of paraffin fallout.

2 cl, 1 dwg

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RU 2 423 622 C2

Authors

Zotov Boris Nikolaevich

Kasymov Marat Sajfudinovich

Dates

2011-07-10—Published

2009-06-25—Filed