Sealing arrangement for a blocking member, such as a slide,...

F - Mech Eng,Light,Heat,Weapons – 16 – K

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F16K 3/18 (2006.01) F16J 15/46 (2006.01)

Patent

CA 2165685

Seal arrangement for a shut-off unit (3) movable from a closed position into an open position and vice versa, such as a slide, shutter or the like, consisting of a seal ring (2) which, in the closed position the shut- off unit (3), is movable with its seal surface (6) into a seal position. The seal ring (2) is embedded in a surrounding groove-like recess (18) or a multi-layer or multi-coated resilient elastic diaphragm (1), and is movable into the seal position with its seal surface (6) under the action of a pressure medium charging the diaphragm (1)

L'invention concerne un dispositif d'étanchéité pour un organe d'arrêt (3), tel qu'une vanne d'arrêt, un clapet ou équivalent, qui peut être déplacé d'une position de fermeture à une position d'ouverture et vice versa. Ce dispositif comporte une bague d'étanchéité (2) pouvant être amenée avec sa surface d'étanchéité (6) dans une position d'étanchéité lorsque l'organe d'arrêt (3) se trouve en position fermée. La bague d'étanchéité (2) est encastrée dans un évidement périphérique (18) en forme de rainure, ménagé dans une membrane (1) souple multicouche, et peut être amenée avec sa surface d'étanchéité (6) en position d'étanchéité sous l'effet d'un milieu de pression agissant sur la membrane.

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