Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing having multiple parts welded – cemented – or fused
Patent
1984-06-29
1987-03-10
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Casing having multiple parts welded, cemented, or fused
415 71, 416188, F04D 704
Patent
active
046487964
ABSTRACT:
A centrifugal pump used for conveying very thick and/or viscous materials and products which comprises a screw impeller of at least one start, of which the component blade, which is in the form of a helix (8) having a pitch which increases in the material feed direction, has a slightly conical outer profile, is wound on a highly conical core (5) smoothly joined to a base disc (6), and at its downstream terminal portion is twisted towards the core (5) to assume the configuration of a delivery vane (9) forming an acute angle with the disc (6) and disposed along a chord thereof, and supporting an overlying circumferential ring (10) which defines a closed delivery duct for the material.
REFERENCES:
patent: 2407748 (1946-09-01), Schmidt
patent: 3446151 (1969-05-01), Andersson
patent: 3644056 (1972-02-01), Wiselius
patent: 3692422 (1972-09-01), Girardier
patent: 3771900 (1973-11-01), Baehr
patent: 4111599 (1978-09-01), Stahle
patent: 4193737 (1980-03-01), Lemmon
patent: 4347035 (1982-08-01), Stahle
patent: 4427336 (1984-01-01), Lake
Garrett Robert E.
Kwon John
Pompe F.B.M. S.p.A.
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