A high capacity centrifugal pump for the transfer of liquids is presented. The pump comprises four major components held in rigid assembly by means of screws and pins: a drive unit which includes a drive shaft,Vacuum pumps a keyway and key, an end play control collar and an impeller mounting fixture; a one piece pump housing comprising mounting legs and a large internal diameter outlet port, a circular pump chamber cavity and a shaft hole containing a lip seal and a pair of flanged sleeve bearings; a one piece impeller of a width slightly less than its diameter; an end plate encompassing a large diameter inlet port. The drive shaft and attached impeller are mounted off center in the cylindrical pump chamber to permit liquid escaping from the impeller to enter a surrounding area which closely resembles the volute chambers common to conventional single stage centrifugal pumps.Self-priming pumps Operation is identical to similar pumps in that liquid to be transported is admitted to the pump's inlet port which is concentric to the open end center of the impeller that is rotated at high speed by external drive means, the liquid is momentarily trapped between the impeller blades, is accelerated to high velocity and thrown from the impeller into the surrounding escape chamber where its kinetic energy is partially converted to pressure, the liquid exiting through the outlet port. The pump has large inlet and outlet ports, which can equal the diameter of the pump impeller; and has an impeller with a width equal to or greater than its diameter.

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2011-11-18

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