Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Radially extending web or end plate
Patent
1988-01-21
1989-02-21
Garrett, Robert E.
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Radially extending web or end plate
416241B, 415212R, 403 30, 403404, F04D 2938
Patent
active
048060780
ABSTRACT:
A centrifugal pump wherein the back shroud of a brittle impeller of ceramic or glass is coupled to the radially outwardly extending disc of a metallic adapter whose hub receives torque from the pump shaft. The adapter has a flange which surrounds the peripheral surface of the impeller or it has a collar which surrounds a complementary collar of the back shroud. The arrangement is such that the coupling between the adapter and the impeller does not subject the impeller to any tensional or other stresses which would be likely to affect the integrity of the brittle impeller. The disc of the adapter is adjacent the rear side of the back shroud so that the adapter does not interfere with the flow of conveyed material to, in and from the impeller.
REFERENCES:
patent: 2392858 (1946-01-01), McMahan
patent: 2401206 (1946-05-01), Van Rijswijk
patent: 2848190 (1958-08-01), Barr
patent: 3149574 (1964-09-01), Mill
patent: 4176519 (1979-12-01), Kronogard
patent: 4479735 (1984-10-01), Thompson et al.
Garrett Robert E.
Klein, Schanzlin & Becker Aktiengesellschaft
Kontler Peter K.
Kwon John T.
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