Vane pump with spring sealing elements against the vane faces

Details Vane pump with spring sealing elements against the vane faces Vane pump with spring sealing elements against the vane faces

1983-06-10

1985-03-05

Vrablik, John J.

Rotary expansible chamber devices

With mechanical sealing

Seal element between working member and vane

418178, 418241, 277 65, F04C 200, F04C 1500, F16J 1532

Patent

active

045028567

ABSTRACT:
A vane pump having a cylindrical drum which revolves in a fixed housing part about an axis extending eccentrically to the housing part. The cylindrical drum drives at least one vane which is rotatably supported in the center of the fixed housing part so that the vane passes through an opening in the wall of the cylindrical drum to the inner surface of the housing part. Spring parts are disposed as sealing elements in the vicinity of the opening and are secured on each side of the vane on the cylindrical drum. At a distance from the fastening location, lip sections bent outward in convex fashion toward the vane so that the spring parts press against the respective associated outer faces of the vane for forming a seal, and also for centering the vane inside the opening when the pump is shut off. The spring parts effect reliable sealing of the opening gaps in every operational state of the pump, and they furthermore effect good removal of the heat generated by the friction between the vane and the spring parts at either side of the vane. The lip sections and/or the surfaces of the vane engaged by them have a wear-resistant coating. The sealing means are simple, inexpensive and functionally reliable.

REFERENCES:
patent: T930007 (1975-01-01), Takahashi et al.
patent: 1848754 (1932-03-01), Lanzerotti-Spina
patent: 2076536 (1937-04-01), Bateman
patent: 3044687 (1962-07-01), Davey
patent: 3902830 (1975-09-01), Maeda
patent: 4055205 (1977-10-01), Withoff et al.

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