Centrifugal pump having anti-clogging backflow prevention gate

Details Centrifugal pump having anti-clogging backflow prevention gate Centrifugal pump having anti-clogging backflow prevention gate

1998-04-08

1999-10-19

Lopez, F. Daniel

Rotary kinetic fluid motors or pumps

Including working fluid force responsive vane or flow control

415204, 415206, 415911, F01B 1902

Patent

active

059677449

ABSTRACT:
A centrifugal pump, includes a pump volute having a substantially axial inlet port and a substantially radial outlet port and is substantially symmetrical about the axis of the outlet port, with the outlet port being flanked by a first and second side wall, an impeller rotably mounted inside the pump volute, a drive motor coupled to the impeller for imparting rotational movement to the impeller, and a gate mounted between the impeller and the outlet port. The gate is in the form of a resilient flap having a fixed end and a free end. The flap free end is movable between a first operating position where the free end is biased against one of the first and second walls during operation of the pump and a second non-operating position in which the gate is disposed in a normal unbiased position spaced between the first and second walls when the pump is not in operation.

REFERENCES:
patent: 5131432 (1992-07-01), Santarossa et al.
patent: 5586862 (1996-12-01), Danner

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