Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent
1998-04-06
1999-11-09
Wolfe, Willis R.
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
417297, F04B 4903
Patent
active
059802103
ABSTRACT:
A diaphragm-type pressurizing pump having a water stopper structure, in which an upper lid of the pump having a pressurizing room being provided on top of the pressurizing pump, wherein the water stopper structure including mainly a valve body and a valve lid is provided on the upper lid of the pump, a water stopper valve set is provided between the water stopper structure and the upper lid of the pump, wherein communicating water inlet holes are provided on the upper lid of the pump and the valve body and are located on the side of the water inlet, a guide groove having a pressurizing hole is formed on the top of the valve body, a water outlet of the upper lid of the pump is provided with a hole communicating with the pressurizing room, the hole is under the water stopper valve set, the flow between the pressurizing room and the water outlet are blockaded with the water stopper valve set so that the upper lid of the pump has the function of stopping water, and also can save space and save cost.
REFERENCES:
patent: 4995793 (1991-02-01), Solomon
patent: 5203803 (1993-04-01), Schoenmeyr
patent: 5261792 (1993-11-01), Schoenmeyr
patent: 5500113 (1996-03-01), Hartley et al.
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