Variable geometry centrifugal pump

Rotary kinetic fluid motors or pumps – Runner or blade selectively adjustable relative to casing – Axially adjusted

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Details

415140, 415 26, 415 34, 192 85A, F01D 700

Patent

active

044178492

ABSTRACT:
A variable breadth centrifugal pump arrangement includes two intermeshing peller sections that are mounted to a common pump shaft so that one of the impeller sections is axially moveable relative to the other impeller section. The impeller sections are rotationally interconnected by a torque transmitting member in the form of a bellows element, which may comprise an axially resilient metal tube formed with a plurality of pleats or a plurality of radially spaced pleated metal tubes that are separated by elastomeric material. Another form of torque transmitting bellows element comprises a plurality of dish-shaped element connected together at their central and peripheral edge portions.

REFERENCES:
patent: 2090401 (1937-08-01), Mayo
patent: 2358744 (1944-09-01), Stepanoff
patent: 2534123 (1950-12-01), Hasselhorn
patent: 2713482 (1955-07-01), Stapleton
patent: 3918831 (1975-11-01), Grennan

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