Impeller-and-seal unit for liquid pumps

Details Impeller-and-seal unit for liquid pumps Impeller-and-seal unit for liquid pumps

1989-06-23

1990-11-27

Kwon, John T.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Resilient, flexible, or resiliently biased

277 22, 277 84, 277 88, 277 93SD, F04D 2908

Patent

active

049732242

ABSTRACT:
An impeller-and-seal unit for a liquid pump includes a plastic impeller, a metal hub affixed to the impeller and arranged to receive and contact a pump shaft, a slide ring seal assembly including a slide ring and a counterring received in a recess of the impeller and being in sliding contact with the slide ring. The metal hub has a radial extension which projects radially outwardly and which is received in the recess, forming a bottom thereof. The counterring has a radial end face which is in a direct contact with the radial extension.

REFERENCES:
patent: 3354529 (1967-11-01), James
patent: 3474733 (1969-10-01), Saletzki et al.
patent: 3594102 (1971-07-01), Oden
patent: 4413831 (1983-11-01), Washida et al.
patent: 4548547 (1985-10-01), Deuring
patent: 4779876 (1988-10-01), Novosad
patent: 4842286 (1989-06-01), Heilala
patent: 4854598 (1989-08-01), Deuring

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