Self-priming centrifugal pump

Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set – Pump priming means

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Details

415 564, 415 565, 415 566, 417200, 4174235, 4174241, F04D 902

Patent

active

060710721

ABSTRACT:
A self-priming centrifugal pump has a recirculation tube connected between a hollow cylinder having a first set of impellers received therein and a first tube having liquid received therein and having a second set of impellers received in one end thereof, so that the suction lift of liquid is enhanced and the liquid flow subjected only to the gravity will also be expedited by the extra centrifugal effect created by the second impeller. Furthermore, there are provided with a plurality of through holes communicating with the first tube. Therefore, the amount of liquid flow back to the first tube is increased.

REFERENCES:
patent: 4624627 (1986-11-01), Tunks
patent: 5599171 (1997-02-01), Horwitz

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