Rotor valve and seal

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

Patent

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Details

F16K 11/085 (2006.01) F16K 5/04 (2006.01)

Patent

CA 2520334

A rotor valve (10) having a rotor seal (34) containing a centrally disposed opening (52) for directing an external pressure (Pe) to a rear surface (35) of the seal for applying a sealing force against a sealing surface (36). A projection (38) of the seal surrounding the opening is disposed within a bore (40) formed in a rotor (14) of the valve. An O-ring seal (44) defines the portion of the rear surface exposed to the external pressure. The rotor may be supported on one end by a bearing assembly (80) and may be open at the opposed end for receiving incoming water. Circumferentially distributed slip-surface plugs extend radially beyond the diameter of the rotor to support the rotor along an interior surface (39) of the valve body (12).

La présente invention concerne une valve de rotor (10) présentant un joint de rotor (34) comprenant une ouverture centrale (52) qui sert à diriger une pression externe (P¿e?) sur une surface arrière (35) du joint afin d'appliquer une force d'étanchéification contre une surface d'étanchéification (36). Un élément en saillie (38) du joint qui entoure l'ouverture, est disposé à l'intérieur d'un orifice (40) formé dans un rotor (14) de la valve. Un joint torique (44) définit la partie de la surface arrière exposée à la pression externe. Le rotor peut prendre appui à une extrémité sur un système de palier (80) et peut être ouvert à l'extrémité opposée pour recevoir de l'eau entrante. Des éléments d'obturation répartis sur la circonférence de la surface de glissement s'étendent radialement au-delà du diamètre du rotor afin de supporter le rotor le long d'une surface intérieure (39) du corps de valve (12).

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