Jet well pump

Details Jet well pump Jet well pump

2006-03-30

2011-11-01

Santiago, Mariceli (Department: 2879)

Pumps

One fluid pumped by contact or entrainment with another

Jet pump with motive fluid generating pump

C417S313000, C417S151000, C417S084000

Reexamination Certificate

active

08047806

ABSTRACT:
An improved jet well pump includes a centrifugal pump assembly that is a stamping-welding one and a jet pump assembly. The centrifugal pump assembly includes a pump body and a pump cover, an impeller and a shaft that are disposed in the pump body, it also includes a motor arranged outside of the pump body. The impeller is installed on the shaft and driven by the motor. The jet pump assembly includes a jet pump body, a nozzle installed in the jet pump body and a throat member disposed on the upper end of the jet pump body. The centrifugal pump assembly and the jet pump assembly are communicated with each other by means of an inlet pipe and a return pipe. The upper ends of the inlet pipe and the return pipe are connected with an inlet and an outlet that are arranged on the axial surface of the pump body respectively, and the lower ends are connected with the throat member and the jet pump body respectively. The well pump not only improves manufactural process by simplifying and compacting structure and is convenient for transportation and use, but also reduces the intensity of labor and the cost, saves materials and has no pollution.

REFERENCES:
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patent: 5074759 (1991-12-01), Cossairt
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patent: 9296780 (1997-11-01), None
International Search Report issued in parent PCT Application No. PCT/CN2006/000549 (including English translation) (5 pages), Jun. 15, 2006.
English translation of the International Preliminary Report on Patentability issued in parent PCT Application No. PCT/CN2006/000549 (4 pages), Nov. 6, 2007.

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