Fluid valves having adjustable sealing characteristics

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

Patent

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Details

F16K 1/20 (2006.01) F16K 1/22 (2006.01) F16K 27/02 (2006.01)

Patent

CA 2758055

Fluid valves having adjustable sealing characteristics are de-scribed. An example fluid valve includes a valve body (202) having a flow aperture to enable the flow of fluid therethrough. Additionally, the fluid valve includes a seal surrounding the flow aperture and a sealing member having a shaft extending therefrom. The sealing member (208) is movable relative to the seal and the flow aperture to control the flow of fluid through the flow aperture. Further, the fluid valve includes a support body (218) movably coupled to the valve body and having a passage to receive the shaft. The support body holds the shaft (212) and the sealing member to enable rotation of the shaft and the sealing member relative to the valve body and the seal, and at least one of the support body or the valve body includes at least one elongated opening to en- able movement of the support body relative to the valve body to change an amount of engagement between the sealing member and the seal when the fluid valve is in a closed position.

L'invention porte sur des vannes de fluide qui ont des caractéristiques d'étanchéité réglables. Un exemple de vanne de fluide comprend un corps de vanne (202) ayant une ouverture d'écoulement pour permettre l'écoulement de fluide à travers celle-ci. De plus, la vanne de fluide comprend un joint d'étanchéité entourant l'ouverture d'écoulement et un élément d'étanchéité ayant un arbre s'étendant à partir de celui-ci. L'élément d'étanchéité (208) est mobile par rapport au joint d'étanchéité et à l'ouverture d'écoulement de façon à réguler l'écoulement de fluide à travers l'ouverture d'écoulement. De plus, la vanne de fluide comprend un corps de support (218) couplé de façon mobile au corps de vanne et ayant un passage pour recevoir l'arbre. Le corps de support porte l'arbre (212) et l'élément d'étanchéité afin de permettre la rotation de l'arbre et de l'élément d'étanchéité par rapport au corps de vanne et au joint d'étanchéité, et le corps de support et/ou le corps de vanne comprend au moins une ouverture allongée afin de permettre le mouvement du corps de support par rapport au corps de vanne afin de changer une quantité de prise entre l'élément d'étanchéité et le joint d'étanchéité lorsque la vanne de fluide est dans une position fermée.

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