A valve waterline surface protection tool

Abstract

This utility model discloses a valve waterline protection fixture, including a cylindrical piston, a cylindrical piston assembly, and a connecting component. The cylindrical piston is disposed within the valve body opening. When subjected to axial compressive force, the axial ends of the cylindrical piston can cause elastic deformation of the sidewalls, thereby forming a radially outwardly protruding annular sealing ring in its central region. The annular sealing ring cooperates with the inner wall of the valve body opening to achieve a seal. A cover plate seals and covers the valve body waterline surface. The connecting component applies axial compressive force to the axial ends of the cylindrical piston and fixes the cylindrical piston and the cover plate assembly coaxially. This utility model provides a secure installation, preventing the fixture from falling off. Furthermore, the cover plate body is made of a high-hardness material to prevent deformation caused by high temperatures, and the wear-resistant outer shell effectively prevents wear on the valve waterline surface. It is used for waterline protection during valve shot blasting and painting.

Description

Technical Field

[0001] This utility model belongs to the technical field of valves, specifically relating to a valve waterline surface protection fixture. Background Technology

[0002] Valves are control components in fluid transport systems, used to open and close pipelines, control flow direction, regulate and control the transported medium, and have functions such as shut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow splitting, or overflow pressure relief. The valve body is the main component of the valve, fixing all other parts together and connecting to the pipeline via flanges and gaskets during use. Currently, during production and transportation, a plastic plug is installed on the valve body to protect the waterline at the inlet and outlet. However, during subsequent shot blasting and painting processes, the high temperatures can easily cause the plastic plug to deform, damaging the waterline and compromising the valve's sealing performance. Furthermore, this structure has poor installation stability and is prone to detachment during transportation.

[0003] Therefore, there is an urgent need to propose a valve waterline surface protection fixture that is securely installed and not easily deformed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a valve waterline surface protection fixture.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model provides a valve waterline surface protection fixture, including:

[0007] A cylindrical piston is disposed inside the valve body opening of a valve. When the axial ends of the cylindrical piston are subjected to axial compressive force, the sidewalls of the cylindrical piston can undergo elastic deformation, thereby forming a radially outwardly protruding annular sealing ring in the middle region. The annular sealing ring cooperates with the inner wall of the valve body opening to achieve a seal.

[0008] The cover plate, which seals and fits onto the waterline surface of the valve body;

[0009] A connecting assembly for applying axial compressive force to both ends of the cylindrical piston and for coaxially fixing the cylindrical piston to the cover plate assembly.

[0010] Preferably, the cylindrical piston has an axial cavity, and a first connecting disk and a second connecting disk are respectively provided at both ends of the cylindrical piston along the axial direction. The hardness of the first connecting disk and the second connecting disk is greater than the hardness of the cylindrical piston. A first threaded connecting post extends from the axial center of the first connecting disk into the axial cavity of the cylindrical piston, and a second disk through hole is provided at the axial center of the second connecting disk.

[0011] Preferably, the cover plate includes a cover plate body and an anti-wear outer shell. The axial part of the cover plate body is provided with a cover plate through hole, and the anti-wear outer shell is disposed on the outer surface of the cover plate body. The axial end face of either side of the anti-wear outer shell cooperates with the waterline surface of the valve body to achieve sealing.

[0012] Preferably, the connecting assembly includes a hand-held part and a second threaded connecting post. The hand-held part is integrally disposed at any end of the length direction of the second threaded connecting post. The second threaded connecting post passes through the cover plate through hole and the second disc through hole in sequence and is threaded into the first threaded connecting post.

[0013] Preferably, the cylindrical piston has a first annular limiting protrusion and a second annular limiting protrusion that protrude radially inward on the inner wall of the axial cavity near its two axial ends. The inner end faces of the first and second annular limiting protrusions form an arcuate structure that is concave from both ends to the middle in its axial direction. The outer end faces of the first and second annular limiting protrusions and the inner wall of the cylindrical piston respectively form a first annular limiting groove and a second annular limiting groove that are concave axially inward. The first connecting disk is fixedly disposed in the first annular limiting groove, and the second connecting disk is fixedly or detachably disposed in the second annular limiting groove.

[0014] Preferably, at least one limiting protrusion is provided on the inner circumferential surface of the second annular limiting groove along its circumferential direction, and at least one limiting opening is provided on the outer circumferential surface of the second connecting disk along its circumferential direction, wherein the limiting protrusion and the limiting opening are matched.

[0015] Preferably, a gasket is also provided, which is sleeved on the second threaded connecting post and located between the handle and the end cap.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] This invention applies axial compressive force to both ends of a cylindrical piston. Since the hardness of the first and second connecting discs is greater than that of the cylindrical piston, and the inner end faces of the first and second annular limiting protrusions are concave arc surfaces from both ends to the middle in their axial direction, the sidewall of the cylindrical piston undergoes elastic deformation. This results in the formation of a radially outwardly protruding annular sealing protrusion in the middle region of the sidewall of the cylindrical piston. The annular sealing protrusion cooperates with the inner wall of the valve body opening to achieve a tight sealing connection between the cylindrical piston and the valve body opening, ensuring secure installation and preventing tooling from falling off. At the same time, the cover plate body is made of a high-hardness material, such as cast iron, to prevent deformation caused by high temperatures. The wear-resistant outer shell effectively prevents the cover from abrading the valve waterline surface, providing waterline protection for valve shot blasting and painting. Attached Figure Description

[0018] Fig. 1 This is a schematic diagram of the cylindrical piston in a valve waterline surface protection fixture of this utility model;

[0019] Fig. 2 This is a schematic diagram of the connecting component in a valve waterline surface protection fixture of this utility model;

[0020] Fig. 3 This is a schematic diagram of the structure of the second connecting disc in a valve waterline surface protection fixture of this utility model. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1

[0025] like Figs. 1-2 As shown, this embodiment provides a valve waterline surface protection fixture, including a cylindrical piston 1, a cover plate 2, and a connecting assembly 3. The cylindrical piston 1 is disposed inside the valve body opening, the cover plate 2 seals and covers the valve body waterline surface, and the connecting assembly 3 is used to apply axial compressive force to both ends of the cylindrical piston and to fix the cylindrical piston and the cover plate assembly coaxially.

[0026] In this embodiment, when the cylindrical piston is subjected to axial compressive force at both ends, the sidewalls of the cylindrical piston can undergo elastic deformation, thereby forming a radially outwardly protruding annular sealing ring in its central region. The annular sealing ring cooperates with the inner wall of the valve body opening to achieve a seal.

[0027] In this embodiment, the cylindrical piston 1 is provided with an axial cavity, and the two ends of the cylindrical piston 1 are respectively provided with a first connecting disk 4 and a second connecting disk 5. The hardness of the first connecting disk 4 and the second connecting disk 5 is greater than the hardness of the cylindrical piston 1. The axial part of the first connecting disk 4 extends into the axial cavity of the cylindrical piston and is provided with a first threaded connecting post 41. The axial part of the second connecting disk 5 is provided with a second disk through hole.

[0028] In this embodiment, the cylindrical piston 1 has a first annular limiting protrusion 11 and a second annular limiting protrusion 12 that are radially protruding inward on the inner wall of the axial cavity near its two ends. The inner end faces of the first annular limiting protrusion 11 and the second annular limiting protrusion 12 are arc-shaped structures that are concave from both ends to the middle in the axial direction. The outer end faces of the first annular limiting protrusion 11 and the second annular limiting protrusion 12 are respectively formed with the inner wall of the cylindrical piston to form a first annular limiting groove and a second annular limiting groove that are axially concave. The first connecting disk 4 is fixedly disposed in the first annular limiting groove, and the second connecting disk 5 is fixedly disposed in the second annular limiting groove.

[0029] In this embodiment, the cover plate 2 includes a cover plate body and an anti-wear outer shell. The axial part of the cover plate body is provided with a cover plate through hole. The anti-wear outer shell is disposed on the outer surface of the cover plate body. The axial end face of either side of the anti-wear outer shell cooperates with the waterline surface of the valve body to achieve sealing.

[0030] In this embodiment, the connecting component 3 includes a handheld part 31 and a second threaded connecting post 32. The handheld part 31 is integrally disposed at any end of the length direction of the second threaded connecting post 32. The second threaded connecting post 32 passes through the cover plate through hole and the second disc through hole in sequence and is threadedly connected to the first threaded connecting post 41.

[0031] The working principle of this embodiment will be further explained below:

[0032] First, the second threaded connecting post is passed through the cover plate through hole and the second disc through hole in sequence, and then threaded into the first threaded connecting post. Next, the cylindrical piston is placed inside the valve body opening, and the end cap is placed on the waterline surface of the valve body. As the second and first threaded connecting posts move closer together, the first and second connecting discs move closer together, thus applying axial compressive force to both ends of the cylindrical piston. Because the hardness of the first and second connecting discs is greater than that of the cylindrical piston, and the inner ends of the first and second annular limiting protrusions... The surface between the surfaces is an arc-shaped structure that is concave from both ends to the middle in its axial direction, which causes the sidewall of the cylindrical piston to undergo elastic deformation, thereby forming a radially outward convex annular sealing ring in the middle region of the sidewall of the cylindrical piston. The annular sealing ring cooperates with the inner wall of the valve body opening to achieve a tight sealing connection between the cylindrical piston and the valve body opening, ensuring a firm installation and preventing tooling from falling off. At the same time, the cover plate body is made of a high-hardness material to prevent deformation caused by high temperature, and the wear-resistant shell can effectively prevent the cover from abrading the valve waterline surface, which is used for waterline protection during valve shot blasting and painting.

[0033] Example 2

[0034] The rest is the same as in Embodiment 1, except that the second connecting disc 5 is detachably disposed within the second annular limiting groove, such as... Fig. 3 As shown, the second connecting disk 5 has three limiting ports on its outer circumferential surface along its circumferential direction, and the second annular limiting groove has three limiting protrusions on its inner circumferential surface along its circumferential direction. The limiting protrusions match the limiting ports.

[0035] Example 3

[0036] The rest is the same as in Embodiment 1, except that a gasket 6 is also provided. The gasket 5 is sleeved on the second threaded connecting post 32 and located between the handle part 31 and the end cap 2. The gasket 6 can prevent wear between the handle part and the end cap.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A valve waterline surface protection fixture, characterized in that, include: A cylindrical piston (1) is disposed in the valve body opening of the valve. When the axial ends of the cylindrical piston are subjected to axial extrusion force, the side wall of the cylindrical piston can be elastically deformed, thereby forming a radially outwardly protruding annular sealing ring in the middle region. The annular sealing ring cooperates with the inner wall of the valve body opening to achieve sealing. Cover plate (2), which seals and fits onto the waterline surface of the valve body; The connecting assembly (3) is used to apply axial compressive force to both ends of the cylindrical piston and to fix the cylindrical piston and the cover plate assembly coaxially.

2. The valve waterline surface protection fixture according to claim 1, characterized in that, The cylindrical piston (1) is provided with an axial cavity. The cylindrical piston (1) is provided with a first connecting disk (4) and a second connecting disk (5) at its two axial ends. The hardness of the first connecting disk (4) and the second connecting disk (5) is greater than that of the cylindrical piston (1). The first threaded connecting post (41) extends from the axial center of the first connecting disk (4) into the axial cavity of the cylindrical piston. The second disk (5) is provided with a second disk through hole at its axial center.

3. The valve waterline surface protection fixture according to claim 2, characterized in that, The cover plate (2) includes a cover plate body and an anti-wear shell. The axial part of the cover plate body is provided with a cover plate through hole. The anti-wear shell is disposed on the outer surface of the cover plate body. The axial end face of any side of the anti-wear shell cooperates with the waterline surface of the valve body to achieve sealing.

4. The valve waterline surface protection fixture according to claim 3, characterized in that, The connecting component (3) includes a hand-held part (31) and a second threaded connecting post (32). The hand-held part (31) is integrally disposed at any end of the length direction of the second threaded connecting post (32). The second threaded connecting post (32) passes through the cover plate through hole and the second disc through hole in sequence and is threaded into the first threaded connecting post (41).

5. A valve waterline surface protection fixture according to claim 4, characterized in that, The cylindrical piston (1) has a first annular limiting protrusion (11) and a second annular limiting protrusion (12) that are radially protruding inward on the inner wall of the axial cavity near its two ends. The inner end faces of the first annular limiting protrusion (11) and the second annular limiting protrusion (12) are arc-shaped structures that are concave from both ends to the middle in the axial direction. The outer end faces of the first annular limiting protrusion (11) and the second annular limiting protrusion (12) and the inner wall of the cylindrical piston respectively form a first annular limiting groove and a second annular limiting groove that are axially concave inward. The first connecting disc (4) is fixedly disposed in the first annular limiting groove, and the second connecting disc (5) is fixedly or detachably disposed in the second annular limiting groove.

6. A valve waterline surface protection fixture according to claim 5, characterized in that, At least one limiting protrusion is provided on the inner circumferential surface of the second annular limiting groove along its circumferential direction, and at least one limiting port is provided on the outer circumferential surface of the second connecting disc (5) along its circumferential direction, wherein the limiting protrusion matches the limiting port.

7. A valve waterline surface protection fixture according to claim 4, characterized in that, A gasket (6) is also provided, which is sleeved on the second threaded connecting post (32) and located between the hand handle (31) and the cover plate (2).

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