Inflating valve gasket mounting device

Abstract

The utility model provides an inflating valve gasket mounting device which comprises a base. A mounting hole is formed in the base, a positioning surface is arranged at the upper end of the mounting hole, and a reset device is arranged in the mounting hole. When the gasket is installed, the gasket is placed on the locating face to be fixed, the inflating valve is held by hand to stretch into the installation hole, in the process of stretching into the installation hole, the inflating valve stretches into the gasket from the middle of the gasket, the gasket is located on the locating face, located by the locating face and not moved, and when the inflating valve stretches into the installation hole, the gasket is sleeved with the inflating valve. And the service life is influenced and the sealing effect is influenced when the gasket is distorted.

Description

Technical Field

[0001] The utility model relates to a mounting device, in particular to a valve stem gasket mounting device. Background Art

[0002] Expansion tanks play an important role in heating systems and cooling systems. They are usually filled with nitrogen or inert gas. In order to prevent leakage, the air tightness of the expansion tank is crucial.

[0003] The expansion tank valve and the connection between the expansion tank need to have good sealing performance to prevent the pre-charged gas from leaking. Usually, a gasket is installed on the valve to improve the air tightness. During the installation process, the size of the gasket is small, and it is difficult to control the gasket to fit into the valve. In addition, in order to control the gasket during the installation process, the gasket is twisted, which affects the gasket life and the sealing effect of the gasket.

[0004] Therefore, the above problems need to be solved urgently. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, the utility model provides a valve stem gasket installation device.

[0006] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides a valve mouth gasket installation device, including a base. The base is provided with a mounting hole, a positioning surface is provided at the upper end of the mounting hole, and a reset device is provided in the mounting hole. When installing the gasket, the gasket is placed on the positioning surface and fixed, and the valve mouth is held and inserted into the mounting hole. During the process of inserting into the mounting hole, the valve mouth is inserted from the middle of the gasket, and the gasket is on the positioning surface and is positioned by the positioning surface without moving. When the valve mouth is inserted into the mounting hole, the gasket is inserted into the valve mouth, which solves the problem that the gasket is difficult to control, the gasket is twisted and affects the service life, and affects the sealing effect.

[0007] Furthermore, in the above-mentioned valve gasket installation device, the installation hole is a countersunk hole. An avoidance hole is provided at one end of the base away from the installation hole, the installation hole and the avoidance hole are coaxial, and a support platform is provided between the bottom surface of the installation hole and the bottom surface of the avoidance hole.

[0008] Furthermore, in the above-mentioned valve washer installation device, the reset device includes a screw and a spring. The screw passes through a through hole provided on the support platform, and the spring is sleeved on the outside of the screw. The spring is provided between the support platform and the head of the screw, and the spring squeezes the head of the screw. The valve extends into the installation hole, squeezing the screw, and the screw moves downward, and the spring deforms and accumulates energy. After the gasket is installed, the valve is loosened, the spring releases energy, pushes the valve upward, and the screw is reset.

[0009] Furthermore, in the above-mentioned valve washer installation device, the threaded shaft of the screw is screwed with a limit nut, and the limit nut is arranged on the lower side of the support platform. During the screw resetting process, the limit nut forms a limit on the screw to prevent the spring from ejecting the screw. In addition, the limit nut can be adjusted to meet the installation requirements of valves of different lengths.

[0010] Furthermore, in the above-mentioned valve gasket installation device, a fixing nut is screwed onto the threaded shaft of the screw, and the fixing nut is arranged at the lower side of the limiting nut. When the fixing nut is screwed, the fixing nut squeezes the limiting nut, locking the limiting nut at a desired position, thereby preventing the limiting nut from being displaced during use.

[0011] Furthermore, in the above-mentioned valve washer installation device, the end of the screw is arranged in the avoidance hole, and the end of the screw is kept at a distance from the bottom surface of the base. When installing the washer, the base is placed on the workbench, the valve pushes the screw to move, the washer is inserted into the valve, the end of the screw contacts the workbench, and the valve cannot move. The valve is usually made of copper, and one end of the valve is usually provided with a groove for embedding the sealing ring. The copper material is relatively soft, and the groove is easily deformed when it touches the base, which affects the sealing of the valve and the expansion tank. This structure can avoid the contact between the groove with the embedded sealing ring and the top surface of the base.

[0012] Furthermore, in the above-mentioned valve gasket installation device, the positioning surface is an inclined surface or a curved surface.

[0013] Furthermore, in the above-mentioned valve stem gasket installation device, in order to facilitate the adjustment of the limiting nut and the fixing nut, the diameter of the avoidance hole is larger than the diameter of the installation hole.

[0014] It can be seen from the above technical scheme that the utility model has the following beneficial effects: in the valve stem gasket installation device of the utility model, the gasket is placed on the positioning surface and is positioned by the positioning surface without moving. The valve stem is inserted into the installation hole and the gasket is inserted into the valve stem, thereby solving the problems of the gasket being difficult to control and the gasket being twisted, which affects its service life and the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of a valve gasket installation device of the utility model;

[0016] Figure 2 This is a schematic diagram of installing the valve gasket of the utility model.

[0017] In the figure: 1. base, 2. mounting hole, 21. positioning surface, 22. avoidance hole, 23. support platform, 3. reset device, 31. screw, 32. spring, 33. limit nut, 34. fixing nut, 4. washer, 5. valve stem. DETAILED DESCRIPTION

[0018] Example 1

[0019] like Figure 1-2 A valve gasket installation device shown includes a base 1. The base 1 is provided with a mounting hole 2, a positioning surface 21 is provided at the upper end of the mounting hole 2, and a reset device 3 is provided in the mounting hole 2. When installing the gasket 4, the gasket 4 is placed on the positioning surface 21 and fixed, and the hand-held valve 5 is inserted into the mounting hole 2. During the process of inserting into the mounting hole 2, the valve 5 is inserted from the middle of the gasket 4. The gasket 4 is on the positioning surface 21 and is positioned by the positioning surface 21 without moving. When the valve 5 is inserted into the mounting hole 2, the gasket 4 is inserted into the valve 5. The mounting hole 2 is a countersunk hole. An avoidance hole 22 is provided at one end of the base 1 away from the mounting hole 2. The mounting hole 2 and the avoidance hole 22 are coaxial, and a support platform 23 is provided between the bottom surface of the mounting hole 2 and the bottom surface of the avoidance hole 22. The reset device 3 includes a screw 31 and a spring 32. The screw 31 passes through the through hole provided on the support platform 23, and the spring 32 is sleeved on the outside of the screw 31. The spring 32 is provided between the support platform 23 and the head of the screw 31, and the spring 32 squeezes the head of the screw 31. The valve 5 extends into the mounting hole 2, squeezes the screw 31, and the screw 31 moves downward, and the spring 32 deforms and accumulates energy. After the washer 4 is installed, the valve 5 is loosened, the spring 32 releases energy, and the valve 5 is pushed upward, and the screw 31 is reset. The threaded shaft of the screw 31 is screwed with a limiting nut 33, and the limiting nut 33 is provided on the lower side of the support platform 23. During the resetting process of the screw 31, the limiting nut 33 limits the screw 31 to prevent the spring 32 from ejecting the screw 31. And the limiting nut 33 is adjusted to meet the installation requirements of valves 5 of different lengths. The threaded shaft of the screw 31 is screwed with a fixing nut 34, and the fixing nut 34 is provided on the lower side of the limiting nut 33. Twist the fixing nut 34, and the fixing nut 34 squeezes the limiting nut 33, locking the limiting nut 33 in the required position to avoid displacement of the limiting nut 33 during use. The end of the screw 31 is set in the avoidance hole 22, and the end of the screw 31 keeps a distance from the bottom surface of the base 1. When installing the washer 4, place the base 1 on the workbench, the valve 5 pushes the screw 31 to move, the washer 4 is inserted into the valve 5, the end of the screw 31 contacts the workbench, and the valve 5 cannot move, avoiding the contact between the groove with the embedded sealing ring and the top surface of the base. The positioning surface 21 is an inclined surface or an arc surface. In order to facilitate the adjustment of the limiting nut 33 and the fixing nut 34, the diameter of the avoidance hole 22 is larger than the diameter of the mounting hole 2.

[0020] The above embodiments are exemplary, and their purpose is to illustrate the technical concept and features of the utility model so that people familiar with this field can understand the content of the utility model and implement it accordingly, and they cannot limit the protection scope of the utility model in turn. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A valve gasket installation device, characterized in that: It comprises a base (1); the base (1) is provided with a mounting hole (2); a positioning surface (21) is provided at the upper end of the mounting hole (2); and a resetting device (3) is provided in the mounting hole (2).

2. A valve gasket installation device according to claim 1, characterized in that: The mounting hole (2) is a countersunk hole; an avoidance hole (22) is provided at one end of the base (1) away from the mounting hole (2); the mounting hole (2) and the avoidance hole (22) are coaxial; and a support platform (23) is provided between the bottom surface of the mounting hole (2) and the bottom surface of the avoidance hole (22).

3. A valve gasket installation device according to claim 2, characterized in that: The resetting device (3) comprises a screw (31) and a spring (32); the screw (31) passes through a through hole provided on the support platform (23); the spring (32) is sleeved on the outside of the screw (31); the spring (32) is provided between the support platform (23) and the head of the screw (31); the spring (32) supports the head of the screw (31).

4. A valve gasket installation device according to claim 3, characterized in that: The threaded shaft of the screw (31) is screwed with a limit nut (33), and the limit nut (33) is arranged on the lower side of the support platform (23).

5. A valve gasket installation device according to claim 4, characterized in that: A fixing nut (34) is screwed onto the threaded shaft of the screw (31), and the fixing nut (34) is arranged on the lower side of the limiting nut (33).

6. A valve gasket installation device according to claim 3, characterized in that: The end of the screw (31) is disposed in the avoidance hole (22), and the end of the screw (31) is spaced apart from the bottom surface of the base (1).

7. The valve gasket installation device according to claim 1, characterized in that: The positioning surface (21) is an inclined surface or a curved surface.

8. The valve gasket installation device according to claim 2, characterized in that: The diameter of the avoidance hole (22) is greater than the diameter of the mounting hole (2).

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