Installation tool for sealing ring and isolation ring of manual valve shaft

Abstract

The utility model provides a manual valve shaft sealing ring and isolation ring installation tool which comprises an installation rod and a pushing sleeve, a through hole is formed in the center of the pushing sleeve, the outer diameter of the installation rod is smaller than the inner diameter of the through hole, and the pushing sleeve is detachably connected with the installation rod in a sliding mode. A blind hole matched with the manual valve shaft is formed in one end of the mounting rod, and the inner diameter of the blind hole is in transition fit with the outer diameter of the manual valve shaft; the other end, away from the blind hole, of the mounting rod is of a frustum structure, and the outer diameter of the frustum structure becomes smaller in the direction away from the blind hole. The utility model has the advantages of simple and reasonable structure, strong integrality, small deformation and convenient installation, and realizes the quick installation of the sealing ring and the isolation ring in place; high temperature or chemical change is avoided, the materials of the sealing ring and the isolating ring are not influenced, long-term repeated use can be realized, the reliability is good, the manufacturing is simple, and the cost is low; the installation requirements of the sealing ring and the isolation ring of the rotating shaft are met, and the installation effect and the sealing performance of the sealing ring and the isolation ring of the manual valve shaft are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of manual valve shaft sealing, and particularly relates to an installation tool for a manual valve shaft sealing ring and an isolation ring. Background Art

[0002] The manual valve shaft penetrates through both ends of the valve body. In the middle of the manual valve shaft, it not only needs to be connected to the valve body but also to the valve core. The valve core is in the high-pressure hydraulic oil inside the valve body. The two ends of the manual valve shaft need to rotate inside the valve body. Therefore, it is necessary to ensure strict sealing between the hydraulic oil and the external environment, and at the same time, it is also necessary to ensure the sealing performance during the rotation of the manual valve shaft under manual operation conditions.

[0003] Therefore, for the installation operation of the sealing ring and the isolation ring of the manual valve shaft, there are very high requirements. During the installation process of the sealing ring, it is required to ensure both the compression amount and that no plastic deformation occurs to lose the sealing performance.

[0004] However, at present, the installation of the sealing ring and the isolation ring of the manual valve shaft mainly adopts the manual installation method. At present, there is no professional installation tool for the sealing ring and the isolation ring of the manual valve shaft. The main defects of manual installation are as follows:

[0005] (1) Manual installation may cause plastic deformation of the sealing and isolation rings due to uncontrollable factors such as uneven force and excessive local force, affecting the sealing effect;

[0006] (2) Manual installation is restricted by the proficiency of workers and usually takes a relatively long time. If the installation process takes too long under high-temperature working conditions, the sealing material may undergo chemical changes and lose the sealing efficiency.

[0007] Therefore, there is an urgent need to design and develop an efficient and safe installation tool for the manual valve shaft sealing ring and the isolation ring to solve the above-mentioned defect problems in the installation effect of the manual valve shaft sealing ring and the isolation ring at the present stage. Summary of the Utility Model

[0008] In view of this, the purpose of the utility model is to design an installation tool for a manual valve shaft sealing ring and an isolation ring to replace the traditional manual installation. By using the installation rod and the push sleeve in cooperation, the sealing ring and the isolation ring are smoothly pushed into the groove of the manual valve shaft, realizing the rapid installation of the sealing ring and the isolation ring in place. During the pushing installation process, the sealing ring and the isolation ring have small deformation, no plastic deformation, and do not affect the sealing effect; and there is no high temperature or chemical change during the installation process, which will not affect the material of the sealing ring and the isolation ring, thus meeting the installation requirements of the sealing ring and the isolation ring of the rotating shaft type and improving the installation effect and sealing performance of the manual valve shaft sealing ring and the isolation ring.

[0009] The utility model provides a manual valve shaft sealing ring and isolation ring installation tool, comprising:

[0010] A mounting rod and a pushing sleeve; a through hole is provided at the center of the pushing sleeve, the outer diameter of the mounting rod is smaller than the inner diameter of the through hole, and the pushing sleeve is detachably slidably connected to the mounting rod; a blind hole matching the manual valve shaft is provided at one end of the mounting rod, and a transition fit is provided between the inner diameter of the blind hole and the outer diameter of the manual valve shaft; the other end of the mounting rod away from the blind hole is a frustum structure, and the outer diameter of the frustum structure decreases from large to small in the direction away from the blind hole.

[0011] Specifically, when installing the sealing ring and isolating ring on the manual valve shaft, first insert the end of the manual valve shaft into the blind hole of the mounting rod; then insert the sealing ring or isolating ring from the small outer diameter end of the cone structure onto the mounting rod; then slide the push sleeve from the small outer diameter end of the cone structure into the mounting rod; push the sealing ring or isolating ring along the distance from the manual valve shaft from far to near, and make a translational movement in the length direction of the mounting rod until it is pushed into the groove of the manual valve shaft. During the installation process using this tool, the problem of plastic deformation easily caused by traditional manual pulling of the sealing ring or isolating ring is effectively avoided; and it is easy to operate and push quickly, which greatly shortens the installation time. Even under high temperature conditions, the sealing ring or isolating ring material will not undergo chemical changes due to long installation time, which can effectively ensure the sealing performance of the sealing ring or isolating ring.

[0012] Furthermore, a center positioning hole is provided at the bottom of the blind hole, and the center positioning hole is coaxial with the manual valve shaft to ensure that the center line of the mounting rod coincides with the center line of the manual valve shaft, thereby reducing deformation of the sealing ring and the isolation ring during installation.

[0013] Furthermore, the depth of the blind hole is equal to the distance from the end of the manual valve shaft to the groove of the sealing ring or the isolation ring.

[0014] Specifically, a blind hole with a larger depth is used for installation where the groove is farther away from the end of the manual valve shaft, and a blind hole with a smaller depth is used for installation where the groove is closer to the end of the manual valve shaft, ensuring that the sealing ring and the isolation ring are pushed into the groove of the sealing ring or the isolation ring in the manual valve shaft.

[0015] Furthermore, a rod polishing structure is provided on the outer diameter surface of the mounting rod, and the rod polishing structure and the mounting rod are an integrated structure. Preferably, the polishing degree of the rod polishing structure is Ra0.2-0.3 micrometers.

[0016] Ensure that the sealing ring and the isolation ring will not get stuck or deformed during the pushing stroke, and are pushed smoothly to the corresponding grooves in the manual valve shaft.

[0017] Furthermore, the inner diameter surface of the pushing sleeve is provided with a sleeve polishing structure, and the sleeve polishing structure and the pushing sleeve are of an integrated structure. Preferably, the polishing degree of the sleeve polishing structure is Ra0.2 - 0.3 microns.

[0018] Ensure that the pushing sleeve avoids friction with the mounting rod during the pushing stroke, and there will be no phenomena such as retention or jamming, and the sealing ring and the isolation ring can be accurately pushed into the corresponding slots in the manual valve shaft.

[0019] Furthermore, the outer diameter of the mounting rod is less than or equal to the inner diameter within the elastic deformation range after the sealing ring and the isolation ring are expanded.

[0020] Designing a reasonable outer diameter of the mounting rod can avoid plastic deformation of the sealing ring and the isolation ring and ensure a good sealing effect.

[0021] Furthermore, the taper of the tapered structure of the mounting rod is set to 1:8 - 1:20, preferably 1:10.

[0022] Specifically, the taper of the tapered structure can be set according to the sizes of the manual valve shaft, the sealing ring, and the isolation ring.

[0023] Furthermore, a rounded corner structure is provided at the end of the tapered structure away from the blind hole on the mounting rod.

[0024] The rounded corner structure at the end of the tapered structure can prevent the sealing ring and the isolation ring from being scratched by the edges when being sleeved on the outer diameter surface of the mounting rod, so as to ensure that the structures of the sealing ring and the isolation ring are not damaged.

[0025] Furthermore, a rounded corner structure is provided at the end of the mounting rod where the blind hole is located.

[0026] The rounded corner structure at the end of the mounting rod where the blind hole is located can prevent the sealing ring and the isolation ring from being scratched by the edges when being sleeved into the slots of the manual valve shaft, so as to ensure that the structures of the sealing ring and the isolation ring are not damaged.

[0027] Furthermore, the mounting rod is provided with corresponding different lengths corresponding to the slots of the sealing ring and the isolation ring at different positions on the manual valve shaft, ensuring that the sealing ring and the isolation ring are accurately pushed into the corresponding slots of the sealing ring or the isolation ring on the manual valve shaft. According to different sizes of the manual valve shaft or sealing requirements, by changing the design dimensions, a manual valve shaft installation tool with a suitable size can be processed.

[0028] Compared with the prior art, the beneficial effects of the present utility model are:

[0029] The manual valve shaft seal ring and spacer installation tool provided by the utility model has a simple and reasonable structure, strong integrity. During the installation process using this installation tool, the seal ring and spacer have little deformation, the installation is convenient and time-saving, and it can quickly install the seal ring and spacer in place, facilitating production needs, with high efficiency, no plastic deformation, and no impact on the sealing effect; the installation process is simple to operate, without high temperature or chemical changes, and will not affect the materials of the seal ring and spacer; it adopts a pure metal structure, can be reused for a long time, and has good reliability; it is simple to manufacture and has a low cost; it meets the installation requirements of the seal ring and spacer for the rotating shaft type, and effectively improves the installation effect and sealing performance of the seal ring and spacer of the manual valve shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model.

[0031] In the drawings:

[0032] Figure 1 is the structural operation schematic diagram of an installation tool for the seal ring and spacer of a manual valve shaft of the present utility model;

[0033] Figure 2 is the component structure diagram of the installation tool for the seal ring and spacer of the manual valve shaft in the embodiment of the present utility model.

[0034] The reference numerals in the drawings are shown as:

[0035] 1. Installation rod, 2. Pushing sleeve,

[0036] 3. Through hole, 4. Blind hole,

[0037] 5. Frustum structure, 6. Central positioning hole,

[0038] 7. Chamfered corner structure, 8. Manual valve shaft,

[0039] 9. Seal ring and spacer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0041] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0042] It should be understood that although the terms first, second, and third may be used in the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0043] The utility model embodiment provides a manual valve shaft sealing ring and isolation ring installation tool, see Figure 1 , 2 As shown, it includes: a mounting rod 1, a pushing sleeve 2; a through hole 3 is provided at the center of the pushing sleeve 2, the outer diameter of the mounting rod 1 is smaller than the inner diameter of the through hole 3, and the pushing sleeve 2 is detachably slidably connected to the mounting rod 1; a blind hole 4 matching with a manual valve shaft 8 is provided at one end of the mounting rod 1, and the inner diameter of the blind hole 4 is transitionally matched with the outer diameter of the manual valve shaft 8; the other end of the mounting rod 1 away from the blind hole 4 is a frustum structure 5, and the outer diameter of the frustum structure 5 decreases from large to small along the direction away from the blind hole 4.

[0044] When installing the sealing ring and isolating ring 9 on the manual valve shaft 8, first insert the end of the manual valve shaft 8 into the blind hole 4 of the mounting rod 1; then insert the sealing ring or isolating ring from the small outer diameter end of the cone structure 5 onto the mounting rod 1; then slide the push sleeve 2 from the small outer diameter end of the cone structure 5 into the mounting rod 1, and push the push sleeve 2 along the distance from the manual valve shaft 8 from far to near, and push the sealing ring or isolating ring to make a translational movement in the length direction of the mounting rod 1 until it reaches the groove of the manual valve shaft 8. During the installation process using this tool, the problem of plastic deformation easily caused by traditional manual pulling of the sealing ring or isolating ring is avoided; it is also easy to operate and push quickly, and the installation time is greatly shortened. Even under high temperature conditions, the sealing ring or isolating ring material will not undergo chemical changes due to long installation time, thereby ensuring the sealing performance of the sealing ring or isolating ring.

[0045] A central positioning hole 6 is provided at the bottom of the blind hole 4. The central positioning hole 6 is coaxial with the manual valve shaft 8, ensuring that the center line of the mounting rod 1 coincides with the center line of the manual valve shaft 8, and reducing the deformation of the sealing ring and the isolation ring 9 during the installation process. The depth of the blind hole 4 is equal to the distance from the end of the manual valve shaft 8 to the groove position of the sealing ring or the isolation ring. As Figure 2 shown, the blind hole 4 with a larger depth is used for the installation where the groove is at a greater distance from the end of the manual valve shaft 8, and the blind hole 4 with a smaller depth is used for the installation where the groove is at a closer distance from the end of the manual valve shaft 8, ensuring that the sealing ring and the isolation ring 9 are pushed into the groove of the sealing ring or the isolation ring in the manual valve shaft 8.

[0046] A rod polishing structure is provided on the outer diameter surface of the mounting rod 1. The rod polishing structure and the mounting rod 1 are of an integral structure, and the polish of the rod polishing structure is Ra0.2 - 0.3 microns, ensuring that the sealing ring and the isolation ring 9 will not get stuck or deformed during the pushing stroke, and are smoothly pushed into the corresponding groove in the manual valve shaft 8.

[0047] A sleeve polishing structure is provided on the inner diameter surface of the pushing sleeve 2. The sleeve polishing structure and the pushing sleeve 2 are of an integral structure, and the polish of the sleeve polishing structure is Ra0.2 - 0.3 microns, ensuring that the pushing sleeve 2 avoids friction with the mounting rod 1 during the pushing stroke, and will not get stuck or jammed, and can accurately push the sealing ring and the isolation ring 9 into the corresponding groove in the manual valve shaft 8.

[0048] The outer diameter of the mounting rod 1 ≤ the inner diameter within the elastic deformation range after the sealing ring and the isolation ring 9 are expanded. By designing a reasonable outer diameter of the mounting rod 1, plastic deformation of the sealing ring and the isolation ring 9 is avoided, ensuring a good sealing effect. See Figure 1 shown, the length of the mounting rod 1 corresponds to the groove positions of the sealing ring and the isolation ring 9 at different lengths A and B on the manual valve shaft 8, ensuring that the sealing ring and the isolation ring 9 can be accurately pushed into the corresponding groove of the sealing ring or the isolation ring in the manual valve shaft 8.

[0049] In this embodiment, according to the dimensions of the manual valve shaft 8, the sealing ring and the isolation ring 9, the taper of the taper structure 5 of the mounting rod 1 is set to 1:10. According to different sizes of the manual valve shaft 8 or sealing requirements, by changing the size design, a manual valve shaft installation tool suitable for the size can be processed.

[0050] At the end of the frustum structure 5 away from the blind hole 4 on the mounting rod 1, a chamfered corner structure 7 is provided. The chamfered corner structure 7 at the end of the frustum structure 5 can prevent the sealing ring and the isolation ring 9 from being scratched by the edges when being sleeved onto the outer diameter surface of the mounting rod 1, so as to ensure that the structures of the sealing ring and the isolation ring 9 are not damaged. A chamfered corner structure 7 is also provided at the end of the mounting rod 1 where the blind hole 4 is located. The chamfered corner structure 7 at the end of the mounting rod 1 where the blind hole 4 is located can prevent the sealing ring and the isolation ring 9 from being scratched by the edges when being sleeved into the slot of the manual valve shaft 8, so as to ensure that the structures of the sealing ring and the isolation ring 9 are not damaged.

[0051] The manual valve shaft sealing ring and isolation ring installation tool provided by this embodiment has a simple and reasonable structure, strong integrity, adopts a pure metal structure, can be used repeatedly for a long time, and has good reliability; it is simple to manufacture and has a low cost; during the installation process using this installation tool, the sealing ring and the isolation ring have little deformation, the installation is convenient and time-saving, it can ensure the quick installation of the sealing ring and the isolation ring in place, is convenient for production needs, has high efficiency, will not produce plastic deformation, and will not affect the sealing effect; the installation process is simple to operate, without high temperature or chemical changes, will not affect the material of the sealing ring and the isolation ring, meets the installation requirements of the sealing ring and the isolation ring for the rotating shaft type, and effectively improves the installation effect and sealing performance of the sealing ring and the isolation ring of the manual valve shaft.

[0052] So far, the technical solution of the present invention has been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0053] The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, and improvement made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A manual valve shaft seal ring and isolation ring installation tool, characterized in that: include: A mounting rod and a pushing sleeve; a through hole is provided at the center of the pushing sleeve, the outer diameter of the mounting rod is smaller than the inner diameter of the through hole, and the pushing sleeve is detachably slidably connected to the mounting rod; One end of the mounting rod is provided with a blind hole matched with the manual valve shaft, and the inner diameter of the blind hole is transitionally matched with the outer diameter of the manual valve shaft; The other end of the mounting rod away from the blind hole is a frustum structure, and the outer diameter of the frustum structure decreases from large to small in a direction away from the blind hole.

2. The manual valve shaft seal ring and isolation ring installation tool according to claim 1, characterized in that: A central positioning hole is arranged at the bottom of the blind hole, and the central positioning hole is coaxial with the manual valve shaft.

3. The manual valve shaft seal ring and isolation ring installation tool according to claim 1, characterized in that: The depth of the blind hole is equal to the distance from the end of the manual valve shaft to the groove of the sealing ring or the isolation ring.

4. The manual valve shaft seal ring and isolation ring installation tool according to claim 1, characterized in that: The outer diameter surface of the mounting rod is provided with a rod polishing structure, and the rod polishing structure and the mounting rod are an integrated structure.

5. The manual valve shaft seal ring and isolation ring installation tool according to claim 1, characterized in that: The inner diameter surface of the pushing sleeve is provided with a sleeve polishing structure, and the sleeve polishing structure and the pushing sleeve are an integrated structure.

6. The manual valve shaft seal ring and isolation ring installation tool according to claim 1, characterized in that: The outer diameter of the mounting rod is smaller than or equal to the inner diameter of the sealing ring and the isolation ring within the elastic deformation range after being expanded.

7. The manual valve shaft seal ring and isolation ring installation tool according to claim 1, characterized in that: The taper of the frustum structure of the mounting rod is set to 1:8-1:

20.

8. The manual valve shaft seal ring and isolation ring installation tool according to claim 1, characterized in that: The end of the frustum structure away from the blind hole on the mounting rod is provided with a rounded corner structure.

9. The manual valve shaft seal ring and isolation ring installation tool according to claim 1, characterized in that: The end of the mounting rod where the blind hole is located is provided with a rounded corner structure.

10. The manual valve shaft seal ring and isolation ring installation tool according to claim 1, characterized in that: The mounting rod is provided with corresponding different lengths corresponding to the sealing rings and the isolating rings at different positions on the manual valve shaft.

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