Rotary fluid vane pump with means preventing axial displacement

Details Rotary fluid vane pump with means preventing axial displacement Rotary fluid vane pump with means preventing axial displacement

1979-01-09

1981-03-24

Vrablik, John J.

Rotary expansible chamber devices

With mechanical sealing

Axially movable end wall or end wall portion

418153, F04C 500, F04C 1500, F04C 2700

Patent

active

042577535

ABSTRACT:
A rotary fluid pump has a stator housing with a generally cylindrical cavity extending therethrough and a pair of recessed end heads assembled at opposite ends of the housing to form a pump cavity therewith. A drive shaft is journalled in the end heads by bearings and extending eccentrically into the interior of the pump cavity and a rotor is mounted on the drive shaft within the pump cavity. A pair of sealing plates of different thickness are individually disposed between the ends of the stator housing and the end heads to divide the pump cavity into a pair of end chambers defined by the end head recesses and the plates and an intermediate rotor chamber defined by the plates. A plurality of vanes are slidably disposed in an equal plurality of grooves radially formed in the rotor. The drive shaft is constrained to prevent axial displacement by stoppers, washers or a combination thereof mounted on the shaft and contacting bearings that support the shaft. The bearings are fixed to one end head.

REFERENCES:
patent: 2787959 (1957-04-01), Jeannin et al.
patent: 2833465 (1958-05-01), Cable
patent: 3024736 (1962-03-01), Erdmann
patent: 3664776 (1972-05-01), Mills et al.
patent: 4072450 (1978-02-01), Carlson

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