Valves and valve actuation – Rotary valves – Butterfly
Patent
1996-02-22
1997-04-15
Fox, John C.
Valves and valve actuation
Rotary valves
Butterfly
251307, F16K 122
Patent
active
056201672
ABSTRACT:
A modular butterfly valve for interupting the flow of particulate articles such as tablets, capsules, pills, and the like that includes a disk member which is selectively operable between an open position and a closed position. The disk member is pivotly carried by a pair of tranverse apertures of an elastomer valve seat. The elastomer valve seat also includes an outside diameter, and a seat portion. The seat portion includes a pair of sealing lips that are cantilevered at a selected angle from one end of the elastomer valve seat. The sealing lips form a first throat portion and a second throat portion. In the closed position, a first of the sealing lips abuts one side of the disk member while a second of the sealing lips abuts a peripheral edge of the disk member. The valve seat is retained between a housing and a removable clamping ring. The housing is configured for a quick connect coupling arrangement with a delivery end of a supply bin. The valve of the present invention minimizes damage to the articles during selective operation to a closed position.
REFERENCES:
patent: 3801066 (1974-04-01), Miles et al.
patent: 5236003 (1993-08-01), Habricht
Fox John C.
Pinto Patrick J.
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