Oil seal for a high speed rotating shaft

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member

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Details

277 57, 277 67, 277 68, 277133, F16J 15447

Patent

active

055382584

ABSTRACT:
An improved oil seal is provided for sealing passage of rotatable shaft through an end wall of a bearing housing in a turbomachine or the like, wherein the shaft is rotatably supported within the bearing housing by oil-lubricated bearings. The improved oil seal comprises a slinger rotor mounted on the shaft for rotation therewith. The slinger rotor includes a radially outwardly extending slinger ring with radially open slinger ports formed therein, in combination with an axially projecting centrifuge sleeve defining an internal tapered centrifuge surface disposed in close running clearance with an axially projecting cylindrical wall segment on the end wall. During shaft rotation, the centrifuge surface pumps oil in a direction away from the end wall to the slinger ring for discharge through the slinger ports to the interior of the bearing housing. In addition, in the preferred form, the slinger rotor has an internal bore with axially extending lands for press-fit mounting onto the rotating shaft, wherein the lands are separated by ramped slots defining additional tapered centrifuge surfaces for pumping oil away from the end wall of the bearing housing.

REFERENCES:
patent: 1779076 (1930-10-01), Ray
patent: 1905234 (1933-04-01), Labberton
patent: 2202944 (1940-06-01), Boyd
patent: 2524124 (1950-10-01), Gyana
patent: 2886351 (1959-05-01), Heard
patent: 3096985 (1963-07-01), Biheller
patent: 5024451 (1991-06-01), Borowski
patent: 5431414 (1995-07-01), Fedorovih et al.

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