Bladder valve

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

Patent

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Details

F16K 7/10 (2006.01) F16L 55/134 (2006.01)

Patent

CA 2515153

A bladder valve (10) is disclosed which comprises a valve body (12) having an inlet (16), an outlet (14) and a flow passage (17) connecting the inlet (16) and the outlet (14). The bladder valve (10) also includes a valve seat (45) surrounding the flow passage (17) and an inflatable bladder (22) mounted in the flow passage (17) and being connectable to a source of fluid under pressure in use. The bladder (22) is mounted on a bladder support member (34) which provides support for the bladder when in its deflated condition, and through which inflation passages (42) pass for the inflation and deflation of the bladder. The bladder (22) is designed to collapse or deflate rapidly in order to open the valve, enabling the valve to be used in applications such as reverse pulse cleaning of filter elements.

L'invention concerne une valve (10) à vessie comprenant un corps (12) avec une entrée (16), une sortie (14) et un passage (17) d'écoulement connectant l'entrée (16) et la sortie (14). La valve (10) à vessie comprend également un siège (45) entourant le passage (17) d'écoulement, et une vessie gonflable (22) montée dans le passage (17) d'écoulement et pouvant être connectée à une source de liquide sous pression en utilisation. La vessie (22) est montée sur un élément (34) de support de vessie servant de support à la vessie lorsque celle-ci est dégonflée, et par lequel passent des passages (42) de gonflage pour le gonflage et le dégonflage de la vessie. La vessie (22) est destinée à s'affaisser ou à se dégonfler rapidement afin d'ouvrir la valve, ce qui permet d'utiliser la valve dans des applications de nettoyage par impulsions de recul d'éléments filtrants.

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