Centrifugal pump having anti-clogging backflow prevention gate
First Claim
1. A centrifugal pump, comprising:
- a) a pump volute having a substantially axial inlet port and a substantially radial outlet port and being substantially symmetrical about the axis of said outlet port, said outlet port being flanked by a first and second side wall;
b) an impeller rotably mounted inside said pump volute;
c) a drive motor coupled to said impeller for imparting rotational movement to said impeller;
d) gate means mounted between said impeller and said outlet port, said gate means comprising a resilient flap having a fixed end and a free end, said flap free end being movable between a first operating position where said free end is biased against one of said first and second walls during operation of the pump and a second non-operating position in which said gate is disposed in a normal unbiased position spaced between said first and second walls when said pump is not in operation.
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Accused Products
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.
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Citations
11 Claims
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1. A centrifugal pump, comprising:
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a) a pump volute having a substantially axial inlet port and a substantially radial outlet port and being substantially symmetrical about the axis of said outlet port, said outlet port being flanked by a first and second side wall; b) an impeller rotably mounted inside said pump volute; c) a drive motor coupled to said impeller for imparting rotational movement to said impeller; d) gate means mounted between said impeller and said outlet port, said gate means comprising a resilient flap having a fixed end and a free end, said flap free end being movable between a first operating position where said free end is biased against one of said first and second walls during operation of the pump and a second non-operating position in which said gate is disposed in a normal unbiased position spaced between said first and second walls when said pump is not in operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification