Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Erodable or permanently deformable
Patent
1987-06-15
1988-01-12
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Erodable or permanently deformable
277 27, 277152, 277226, 384486, F04D 2910
Patent
active
047188200
ABSTRACT:
A fluid pump apparatus having on its first end a motor for power driving an elongated shaft, the shaft portion housed in a pump housing, with an impeller on the second end for routing fluid from an inlet to an outlet port. Toward its first end, the shaft is supported and rotates on a pair of oil bearings housed in an oil bath, for effecting rotation during the pumping action. On the second end, the improved apparatus further comprises a third set of bearings housed on that portion of the shaft adjacent the impeller blade, between the pump housing and the shaft. There is further provided a pair of angular rubber grease seals on either set of the bearings wherein grease injected into the cavity housing the bearings and grease seals fills a void between each pair of grease seals so that the seal members are moved into a rigid sealing position between the shaft and the housing. The components of the third set of bearings and grease seals replace the packing material, and in addition to effecting a more consistent seal to disallow mud into the area, also provide a stable mounting for that portion of the shaft, and reduce or totally eliminate any flexing which may occur in the shaft, and thus greatly improve the life of the pump.
REFERENCES:
patent: 2684033 (1954-07-01), Montgomery et al.
patent: 2731282 (1956-01-01), McManus et al.
patent: 3134331 (1964-05-01), Huber
patent: 3544116 (1970-12-01), Peterson
patent: 3625578 (1971-12-01), Loftis et al.
patent: 3748003 (1973-07-01), Barbar
patent: 3869181 (1975-03-01), Barbar
patent: 4179130 (1979-12-01), Fass et al.
Garrett Robert E.
Kwon John T.
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