Self-priming centrifugal pump

Gas and liquid contact apparatus – With liquid separations – Decanting

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Details

415 88, 415 89, 261 91, 261121M, B01F 304, F04D 112

Patent

active

039475301

ABSTRACT:
A self-priming centrifugal pump includes a housing having an inverted frusto-conically shaped lower portion. A centrifugal impeller is suspended from the shaft of a motor mounted in the top portion of the housing. The centrifugal impeller includes a solids collector member removably attached to its lower end. A cylindrical inlet tube, integral with the frusto-conically shaped lower housing portion, extends into the interior of the centrifugal impeller through an opening in the lower end of the solids collector member. An inverted dish shaped impeller member is located above the centrifugal impeller and directs and impels fluid pumped by the centrifugal impeller toward a plurality of efflux ports located in the pump housing. The centrifugal impeller includes an air hole in the conical wall thereof to allow air to escape as the pump is priming.

REFERENCES:
patent: 905024 (1908-11-01), Trent
patent: 1673594 (1928-06-01), Schmidt
patent: 1862906 (1932-06-01), Preleuthner
patent: 1895027 (1933-01-01), De Mees
patent: 2190897 (1940-02-01), Underwood
patent: 3181796 (1965-05-01), Keller
patent: 3204768 (1965-09-01), Daniel
patent: 3220707 (1965-11-01), Weatherston et al.

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