Thrust cover for a centrifugal pump having dual sealing arrangem

Details Thrust cover for a centrifugal pump having dual sealing arrangem Thrust cover for a centrifugal pump having dual sealing arrangem

1995-02-23

1996-07-02

Cummings, Scott W.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 65, 415230, F16J 1534

Patent

active

055314562

ABSTRACT:
A centrifugal pump includes a liquid-filled interior space that is sealed by a thrust cover. The thrust cover is provided with an opening for the introduction of a shaft on the side of the thrust cover remote from the pump's interior space. A first counter abutment is disposed in the thrust cover for a first slip ring shaft seal. The thrust cover is provided with a second counter abutment for a second slip ring seal. The first and second counter abutments are disposed at different diameters and are axially offset with respect to each other. The radial distance between the first and second counter abutments is of a predetermined magnitude so that the first slip ring seal and the second slip ring seal are disposed at two different diameters.

REFERENCES:
patent: 1862887 (1932-06-01), Durdin, Jr.
patent: 2517932 (1950-08-01), Sanders
patent: 3081095 (1963-03-01), Hamrick
patent: 3089423 (1963-05-01), Raub et al.
patent: 3582089 (1971-06-01), Amorese
patent: 3600101 (1971-08-01), Oglesby
patent: 4434986 (1984-03-01), Warner
patent: 4669738 (1987-06-01), Netzel
patent: 4746269 (1988-05-01), Raab
patent: 4900039 (1990-02-01), Klecker et al.

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