Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part
Patent
1982-07-21
1985-12-03
Scott, Samuel
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
415 9, 415206, 415219C, 416174, F04D 1708
Patent
active
045563640
ABSTRACT:
A centrifugal pump comprises an impeller which rotates at the center of a volute casing. The open side of the casing is closed by means of a wear plate which is fixed relative to the casing and which has a central inlet opening. The impeller includes a rear plate and a plurality of curved blades radiating from an open central portion of the rear plate. An annular plate is fixed to the outermost edges of the blades at the inlet side of the impeller. A cylindrical sleeve extends in an axial direction from near the inner edge of the annular plate through the opening in the wear plate. The annular plate and sleeve protect the edge of the wear plate and impede grit and sand entering between the annular plate and around the opening and the wear plate causing wear when the pump is used to pump slurry containing grit or sand.
REFERENCES:
patent: 1034456 (1912-08-01), Hurst
patent: 1525884 (1921-12-01), Plummer
patent: 1891267 (1932-12-01), Milkowski
patent: 3402671 (1968-09-01), Wilfley
patent: 3782851 (1974-01-01), Hackbarth
patent: 3856434 (1974-12-01), Hoffmann
patent: 3881840 (1975-05-01), Bunjes
patent: 4063846 (1977-12-01), Eagle
patent: 4076450 (1978-02-01), Ross
Bowman Brian J.
D. Wickham and Company Limited
Gammons Robert T.
Scott Samuel
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