초록 ▼

A disc valve having a valve housing with a conduit therethrough and a seal ring mounted to the housing. A disc can be pivoted about a pivot axis that is offset from the main valve axis and perpendicular thereto between an open position and a closed position in which a seating surface of the disc con

A disc valve having a valve housing with a conduit therethrough and a seal ring mounted to the housing. A disc can be pivoted about a pivot axis that is offset from the main valve axis and perpendicular thereto between an open position and a closed position in which a seating surface of the disc contacts a sealing surface of the seal ring in a sealing plane that is perpendicular to the valve axis. The seating surface of the disc is a conically shaped surface that is concentric with the valve axis when the disc is in the closed position. At least a portion of the sealing surface of the seal ring at the intersection between the sealing surface and the sealing plane has the same conical shape. The seal ring can be deflected by moving the disc beyond the closed position to thereby increase the sealing pressure between them. The seal ring can be aligned with the seating surface of the disc by initially floatingly mounting the ring to the housing, then closing the disc to center the seal ring, and thereafter locking the seal ring to the housing in the centered position. Opposing faces of the disc are slanted relative to the axis of the conically shaped seating surface.

대표청구항 ▼

In a disc valve of the type having a housing including a valve conduit defining a main axis of the valve, a seal ring carried by the housing and having a sealing surface, a valve disc defined by opposing, spaced apart end faces and a seating surface interconnecting the end faces and arranged for sea

In a disc valve of the type having a housing including a valve conduit defining a main axis of the valve, a seal ring carried by the housing and having a sealing surface, a valve disc defined by opposing, spaced apart end faces and a seating surface interconnecting the end faces and arranged for sealingly engaging the sealing surface of the seal ring when the disc is in its closed position, and means for pivotally moving the disc about a pivot axis which is offset from and perpendicular to the main valve axis between a closed position in which the seating surface engages the sealing surface and an open position in which the disc is generally parallel to the main valve axis, the improvement to the sealing surface and the disc comprising in combination: a sealing surface at least a portion of which defines a conical surface which is coaxial with respect to the main valve axis; the seating surface of the disc having a conical shape which includes the conical shape of said portion of the sealing surface and which is arranged so as to be co-axial with the main axis when the disc is in the closed position in which the sealing surface and the seating surface are in mutual contact in a plane perpendicular to the main valve axis; the disc including generally parallel faces which are slanted relative to the axis of the conically shaped seating surface by an angle which lies in a plane that is substantially perpendicular to the pivot axis and includes the main valve axis, the angle being further arranged so that it trails the closing motion of the disc to prevent a premature contact between the disc and the ring as the disc moves from its open into its closed position.