초록 ▼

Control device (1) for a valve (2) with a disc (3), comprising a body (4), two seals (5), two openings (7), spacer balls (8), cavities (9) in the inner faces (10) of the body (4) and of the seals (5), and an elastic return member (11) for the seals (5), the disc (3) being able to be moved as a whole

Control device (1) for a valve (2) with a disc (3), comprising a body (4), two seals (5), two openings (7), spacer balls (8), cavities (9) in the inner faces (10) of the body (4) and of the seals (5), and an elastic return member (11) for the seals (5), the disc (3) being able to be moved as a whole and to be deformed in the axial direction, and being capable of assuming three characteristic positions of totally open, closed tight and intermediate, the said control device (1) comprising operation-control means (20), a control member (21), link means (23) comprising, firstly, support means (24) for the disc (3) which pivot about an axis (25) and are integral in rotation with the seals (5), displaceable by pivoting; and, secondly, separate means (26) for operating the disc (3) which are connected to the control member (21) and to the body (4).

대표청구항 ▼

A valve having a control device, said valve having a housing with two facing openings with valve seats; a disc having a central body with faces with cavities, balls being disposed in said cavities of the faces of the central body, two seals, each having a first surface for interaction with one of th

A valve having a control device, said valve having a housing with two facing openings with valve seats; a disc having a central body with faces with cavities, balls being disposed in said cavities of the faces of the central body, two seals, each having a first surface for interaction with one of the valve seats of the two facing openings of the valve and a second surface having cavities aligned with the cavities of the face of the central body, said seals being mounted on the central body for relative movement and an elastic member for urging the two seals toward each other; means including a lever arm for mounting the disc for pivotal movement in the housing around a pivot point offset from an axis of the disc between an opened position free of the openings and valve seats of the valve housing, and a closed position wherein the disc is disposed between the two valve seats and the seals are urged tightly against each of the valve seats, said disc having an intermediate position disposed between the valve seats with the seals spaced axially from the respective valve seats; and said control device including operation control means for moving the disc between said positions, said operation control means including a control member slidably mounted for movement between two extreme positions wherein the disc is respectively in the opened position and the closed position, link means associated and controlled by the control member and being connected to the disc and to the control member for pivoting the disc and lever arm between the opened position and the closed position, and means for restraining pivotable movement of the disc and lever arm past the intermediate position wherein continued movement of the control member causes relative rotation between the body and seals to dislodge the balls from the aligned cavities to cause an expansion of the seals away from the faces of the body and into tight engagement with the valve seats.