Rotary valve

Details Rotary valve Rotary valve

1998-11-19

2000-03-14

Shaver, Kevin

Dispensing

With discharge assistant

Movable or conveyer-type trap chamber

G01F 1110

Patent

active

060360607

ABSTRACT:
A rotary valve comprises a housing having a supply opening and a discharge opening and defining an inner substantially rotary symmetrical wall around an axis of rotation. A cellular wheel is supported rotatably about the axis of rotation within the housing, and includes a hub or shaft. A series of inner web plates is arranged to extend radially in a star-shape on the hub and have a radial outer wedge surface inclined with respect to the axis of rotation. An equal number of outer web plates have each a radial inner wedge surface which rides on and engages the radial outer wedge surface of a respective inner web plate. The web plates are guided by respective radial guidances. In the region of the radial outer edge of each of the outer web plates is a sealing strip radially displaceable and guided by a respective radial guidance to engage the housing's inner wall. An adjusting device generates an axial force to bias at least one series of the inner and outer web plates to provoke a radial adjustment of the sealing strips when the web plates glide along the interengaging wedge surfaces relative to each other.

REFERENCES:
patent: 4982760 (1991-01-01), Mustaklem
patent: 5538383 (1996-07-01), Ikeda et al.

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