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US 2022/0034408 A1Published application
Gate valve
AssigneeKitz Corporation
InventorsTetsuya KOBAYASHI, Yuri KOBAYASHI
Life of this patent
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AssigneeKitz Corporation
InventorsTetsuya KOBAYASHI, Yuri KOBAYASHI
Estimating the term…
A wedge-shaped gate valve with a branching part formed to be open in a direction orthogonal to an inner flow path of a valve box having a coupling part on both sides, and a valve disk ascends and descends from the branching part via a valve stem to open and close an annular valve seat surface. At a boundary between the coupling part and the branching part, a reinforcing thickened part having a cylindrical, cone, or truncated cone shape with a diameter gradually reducing from the branching part toward the coupling part side is provided, and the thickened part is formed by taking, as an outer shape, a cylinder, a cone, or a truncated cone with an axis P2 that is eccentric from a center line P1 of the flow path to the branching part side and is parallel to or crossing the center line P1 as a rotation axis.
A gate valve with a branching part formed to be open in a direction orthogonal to an inner flow path of a valve box having a coupling part on each of both sides, in which a valve disk ascends and descends from this branching part via a valve stem to open and close an annular valve seat surface in the valve box, wherein, at a boundary between the coupling part and the branching part, a reinforcing thickened part having a substantially cylindrical shape or a substantially cone shape or substantially truncated cone shape with a diameter gradually reducing from this branching part toward the coupling part side is provided, and this thickened part is formed by taking, as an outer shape, a cylinder, a cone, or a truncated cone with an axis which is eccentric from a center line of the flow path to the branching part side and is parallel to or crossing the center line of the flow path taken as a rotation axis.
A gate valve with a branching part formed to be open in a direction orthogonal to an inner flow path of a valve box having a coupling part on each of both sides, in which a valve disk ascends and descends from this branching part via a valve stem to open and close an annular valve seat surface in the valve box, wherein, at a boundary between the coupling part and the branching part, a reinforcing thickened part having a substantially cylindrical shape or a substantially cone shape or substantially truncated cone shape with a diameter gradually reducing from this branching part toward the coupling part side is provided, and this thickened part is formed so as to, while maintaining a shape with a material thickness on a branching part side larger in a sectional direction than a valve disk accommodating part opposite thereto, have the material thickness gradually thinner at a predetermined rate as proceeding from a base side toward an upper surface side of the cone along a peripheral surface.
Dependencies are inferred from the claim text.