Vane pump having improved vane sealing

Details Vane pump having improved vane sealing Vane pump having improved vane sealing

1992-03-27

1993-10-26

Bertsch, Richard A.

Rotary expansible chamber devices

With changeable working chamber magnitude

By adjustably limiting vane or abutment movement

418108, F01C 2100

Patent

active

052560430

ABSTRACT:
The invention concerns a vane pump for conveying bulk substances, in particular meat pastes, having a housing (4) with an inlet (6) and an outlet (10) for the bulk substance. Disposed inside the housing (4) is a rotor (14) displaying a rotatably-journaled, central driving element (16) and several moving vanes (20a to j), which are arranged on the central driving element, in its direction of rotation (C), one behind the other and at an angle to the direction of rotation (C), and commonly surrounded by a limiting wall (24) of the housing (4) running about in the direction of movement (C) of the vanes (20a to j), with the limiting wall (24) forming conveying chambers for picking up (accommodating) bulk substances and, with rotation of the driving element (16), being moved in sequence past the inlet (6) and the outlet (10). Control means are provided for the defined approach of the vanes (20a to j) toward the limiting wall ( 24), up to a minimum distance, through means of which is achievable a sufficient degree of sealing without bodily (physical) contact between the vanes (20a to j) and the limiting wall.

REFERENCES:
patent: 1307631 (1919-06-01), Jacques
patent: 1995755 (1935-03-01), Smith
patent: 2153587 (1939-04-01), Parreira
patent: 2604853 (1952-07-01), Taylor
patent: 2619913 (1952-12-01), Longenecker
patent: 4895278 (1990-01-01), Mataro
patent: 5102314 (1992-04-01), Staudenrausch
Copy of European Search Report.

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