Motor pump family with single stage and multiple stage impellers

Details Motor pump family with single stage and multiple stage impellers Motor pump family with single stage and multiple stage impellers

1996-09-12

1997-10-14

Thorpe, Timothy

Pumps

Successive stages

Stages driven by relatively movable motor working members

415 61, 417248, 417 62, F04B 300

Patent

active

056765282

ABSTRACT:
A motor pump group has a plurality of centrifugal pumps of the same nominal port diameter including a plurality of impellers having stepwise greater outside diameters for stepwise higher pump heads, and a plurality of respective motors for actuating the pumps. The pump heads are classified into a low head section and a high head section. The low head section is handled by a single-stage impeller, and the high head section is handled by multi-stage impellers. The centrifugal pumps have respective pressed-sheet pump casings. The outside diameters of the impellers are not required to be increased in the high head section, and the outside diameters of the pump casings fall in a relatively small range.

REFERENCES:
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Sigmund Pumps Catalogue, Jun. 13, 1956, pp. 5-6, "Horizontal Split-Casing Type Centrifugal Pump".

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