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Bidirectional wedge-shaped sealing structure and low-temperature fixed ball valve with the same

A wedge-shaped sealing and wedge-shaped technology, which is used in valve devices, cocks including cut-off devices, engine components, etc., can solve the problems of small lip-shaped sealing surface extrusion force, difficulty in bidirectional sealing, and high installation requirements. The effect of improving assembly efficiency and good sealing effect

Pending Publication Date: 2022-02-18
SHANGHAI MECCO VALVE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rubber O-ring is limited by the material and can only be used at -50°; the V-shaped spring installed on the lip ring has a very small spring force on the lip sealing surface, and it is difficult to seal after low-temperature deformation, and the installation requirements are extremely high , leading to bi-directional sealing difficulties

Method used

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  • Bidirectional wedge-shaped sealing structure and low-temperature fixed ball valve with the same
  • Bidirectional wedge-shaped sealing structure and low-temperature fixed ball valve with the same
  • Bidirectional wedge-shaped sealing structure and low-temperature fixed ball valve with the same

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Embodiment Construction

[0027] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0028] Wherein, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right" ", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", "Radial", "Circumferential ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application or simplifying the description, rather than indicating or implying that the ref...

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Abstract

The invention relates to a bidirectional wedge-shaped sealing structure, which is suitable for sealing between a valve seat and a valve body and comprises a valve seat sealing ring and wedge-shaped pads; the valve seat sealing ring is annular, opening structures are formed in the two directions of the valve seat sealing ring, and the sizes of the opening structures are gradually reduced in a direction from the two sides of the valve seat sealing ring to the middle of the valve seat sealing ring; the wedge-shaped pads are annular, one end of each wedge-shaped pad is a stretching-in end matched with the opening structure, the other end of each wedge-shaped pad is a fixed end and is suitable for being attached to the valve body, the valve seat and an installation structure between the valve body and the valve seat, and the two wedge-shaped pads stretch into the opening structure from one side of the valve seat sealing ring respectively. According to the valve seat sealing ring, the extending end of the wedge-shaped pad extends into the opening structure, and the valve body, the valve seat and the installation structure between the valve body and the valve seat are attached, so that the valve seat sealing ring can bear larger extrusion force, the deformation quantity is larger, sealing can be easily conducted in a severe or extreme use environment, and it can be guaranteed that the valve seat sealing ring has a good sealing effect.

Description

technical field [0001] The present application relates to the technical field of valve body sealing, in particular to a bidirectional wedge-shaped sealing structure and a low-temperature fixed ball valve having the same. Background technique [0002] The valve seat of the ball is a metal piston structure, and the seal between the metal valve seat and the valve body is usually sealed by an O-ring or a lip ring. The rubber O-ring is limited by the material and can only be used at -50°; the V-shaped spring installed on the lip ring has a very small spring force on the lip sealing surface, and it is difficult to seal after low-temperature deformation, and the installation requirements are extremely high , resulting in two-way sealing difficulties. Contents of the invention [0003] In view of this, the application proposes a two-way wedge sealing structure, which is suitable for the sealing between the valve seat and the valve body, including a valve seat sealing ring and a w...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K5/08F16K5/20
CPCF16K5/0663F16K5/0689F16K5/08F16K5/201
Inventor 倪君瑞章晓波刘超白玉洁
Owner SHANGHAI MECCO VALVE
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