Anti-disassembly actuator and valve device

By designing a tamper-proof actuator in the valve device, and using the tamper-proof part and nut to achieve one-way rotation of the nut, the problem of reversible clockwise rotation of the nut in the prior art affecting the anti-tamper-proof effect, and the anti-tamper-proof effect and stability of the valve are enhanced.

CN223120776UActive Publication Date: 2025-07-18TONGFANG ENERGY SAVING ENG TECH
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Patent Information

Application Number
CN202422377227.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-27
Publication Date
2025-07-18
Estimated Expiration
2034-09-27

AI Technical Summary

Technical Problem

In existing valve devices, when the actuator and the valve are threaded, the nut can rotate counterclockwise, affecting the anti-tamping effect.

Method used

An anti-tamper actuator is designed, including a tamper-proof member and a nut. The nut is rotatably connected to the actuator, and a one-way rotation is achieved through the engaging structure to prevent counterclockwise rotation. The nut interferes with the tamper-proof member, so as to achieve inability to rotate and disassemble.

Benefits of technology

The one-way rotation of the nut is achieved, which enhances the anti-tamping effect, prevents the valve from falling off during rotation, and improves the stability of the valve and the anti-tamping effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an anti-disassembly actuator and a valve device. The anti-disassembly actuator comprises an actuator body, an anti-disassembly piece and a nut, and the anti-disassembly piece is connected to the actuator body in a positioned mode; the nut is rotatably connected to the actuator; the nut is arranged on the anti-disassembly piece, the nut can be clamped to the anti-disassembly piece in the rotating process, and the nut and the anti-disassembly piece are of an anti-disassembly connecting structure; the nut is used for being connected with a valve, at the moment, the nut rotates in the clockwise direction and rotates relative to the anti-disassembly piece, after the nut rotates in place, the nut interferes with the anti-disassembly piece when rotating anticlockwise, the nut cannot rotate anticlockwise, one-way rotation of the nut is achieved, and the anti-disassembly function that rotation disassembly cannot be achieved is achieved. And the anti-disassembly effect of the anti-disassembly actuator is ensured.
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Description

Technical Field

[0001] The utility model relates to the technical field of valve devices, in particular to an anti-disassembly actuator and a valve device. Background Art

[0002] With the development of technology, a valve is a device used to control fluids and is widely used in various fields such as industrial production, municipal construction, and the energy field. In the prior art, the actuator and the valve are connected by a threaded connection. At this time, the actuator is provided with a nut, which is connected to the valve through the nut. However, the nut rotates relative to the actuator and can rotate in the counterclockwise direction, affecting the anti-disassembly effect of the actuator. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an anti-disassembly actuator and a valve device. The anti-disassembly part is positioned and connected to the actuator; the nut is rotatably connected to the actuator; the nut is arranged on the anti-disassembly part, and the nut can be engaged with the anti-disassembly part during rotation and forms an anti-disassembly connection structure with the anti-disassembly part; the nut is used to connect the valve. At this time, the nut rotates in the clockwise direction, and the nut rotates relative to the anti-disassembly part. When the nut rotates in place, the nut forms an interference with the anti-disassembly part when rotating counterclockwise, and the nut cannot rotate counterclockwise, realizing the one-way rotation of the nut and the anti-disassembly function of non-return disassembly, ensuring the anti-disassembly effect of the anti-disassembly actuator.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] An anti-disassembly actuator is applied to a valve device. The anti-disassembly actuator includes:

[0006] An actuator;

[0007] An anti-disassembly part, positioned and connected to the actuator;

[0008] A nut, rotatably connected to the actuator; the nut is arranged on the anti-disassembly part, and the nut can be engaged with the anti-disassembly part during rotation and forms an anti-disassembly connection structure with the anti-disassembly part; the nut is used to connect the valve.

[0009] Optionally, the anti-disassembly part is arranged static relative to the actuator;

[0010] The nut rotates relative to the valve and can rotate relative to the anti-disassembly part until the nut is engaged with the anti-disassembly part.

[0011] Optionally, the nut rotates in the clockwise direction and rotates relative to the valve;

[0012] The nut is in a snap-fit connection with the anti-disassembly part and restricts the counterclockwise rotation of the nut.

[0013] Optionally, the nut is sleeved inside the anti-disassembly member;

[0014] The anti-disassembly member is provided with a first anti-disassembly portion;

[0015] The nut is provided with a second anti-disassembly portion, and the second anti-disassembly portion engages with the first anti-disassembly portion as the nut rotates, and restricts the counterclockwise rotation of the nut.

[0016] Optionally, the anti-disassembly member includes an annular main body, and the first anti-disassembly portion is connected to the annular main body and is arranged obliquely;

[0017] The second anti-disassembly portion is a clamping groove, and the clamping groove is an inclined groove;

[0018] The first anti-disassembly portion is a clamping arm, and the clamping arm engages with the clamping groove.

[0019] Optionally, there are multiple first anti-disassembly portions, and the multiple first anti-disassembly portions are arranged along the circumferential direction of the annular main body and correspond to the respective second anti-disassembly portions.

[0020] Optionally, the annular main body is provided with an annular groove, and the first anti-disassembly portion is connected to the inner side wall of the annular groove;

[0021] The second anti-disassembly portion is on the surface of the nut facing the first anti-disassembly portion;

[0022] When the nut is inside the annular groove, the nut rotates relative to the annular main body, and the second anti-disassembly portion gradually approaches the first anti-disassembly portion until the second anti-disassembly portion is in clamping connection with the first anti-disassembly portion.

[0023] Optionally, the anti-disassembly member is an anti-disassembly rubber ring and can be truncated.

[0024] Optionally, the actuator is provided with a connecting portion;

[0025] Both the anti-disassembly member and the nut are sleeved on the connecting portion;

[0026] The nut is hermetically connected to the connecting portion.

[0027] A valve device includes the anti-disassembly actuator and a valve as described above; the valve is docked with the actuator in the anti-disassembly actuator and is connected to the nut in the anti-disassembly actuator.

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

[0029] The present utility model provides an anti-disassembly actuator and a valve device. An anti-disassembly part is positioned and connected to the actuator; a nut is rotatably connected to the actuator; the nut is arranged on the anti-disassembly part, and during rotation, the nut can be engaged with the anti-disassembly part and form an anti-disassembly connection structure with the anti-disassembly part; the nut is used to connect the valve. At this time, when the nut rotates clockwise, the nut rotates relative to the anti-disassembly part. When the nut rotates in place, the nut forms interference with the anti-disassembly part when rotating counterclockwise, and the nut cannot rotate counterclockwise, realizing the one-way rotation of the nut and the anti-disassembly function of preventing rotation and disassembly, ensuring the anti-disassembly effect of the anti-disassembly actuator. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings. Among them, the same reference numerals in the following description represent the same parts.

[0032] Figure 1 The figure shows a schematic diagram of an anti-disassembly actuator according to the utility model of the present application.

[0033] Figure 2 The figure shows a cross-sectional view of an anti-disassembly actuator according to the utility model of the present application.

[0034] Figure 3 The figure shows Figure 2 a partial enlarged view of part A in

[0035] Figure 4 The figure shows a connection schematic diagram of the anti-disassembly part and the nut of the anti-disassembly actuator according to the utility model of the present application.

[0036] Figure 5 The figure shows a schematic diagram of the anti-disassembly part of the anti-disassembly actuator according to the utility model of the present application.

[0037] Figure 6 The figure shows a schematic diagram of the nut of the anti-disassembly actuator according to the utility model of the present application.

[0038] Figure 7 The figure shows a schematic diagram of a valve device according to another embodiment

[0039] Reference Numerals

[0040] 100, anti-disassembly actuator;

[0041] 10, actuator; 11, connecting part;

[0042] 20. Anti-disassembly part; 21. First anti-disassembly part; 22. Ring-shaped main body; 22a. Ring-shaped groove;

[0043] 30. Nut; 31. Second anti-disassembly part; 32. Internal thread;

[0044] 200. Valve device; 210. Valve. Specific implementation mode

[0045] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0046] Please refer to the attached Figures 1-2 , the present utility model provides an anti-disassembly actuator 100, and the anti-disassembly actuator 100 is applied to a valve device. The anti-disassembly actuator 100 includes an actuator 10, an anti-disassembly part 20, and a nut 30. The anti-disassembly part 20 is positioned and connected to the actuator 10; the nut 30 is rotatably connected to the actuator 10; the nut 30 is arranged on the anti-disassembly part 20, and the nut 30 can be engaged with the anti-disassembly part 20 during rotation and forms an anti-disassembly connection structure with the anti-disassembly part 20; the nut 30 is used to connect the valve 210.

[0047] At this time, the nut 30 rotates clockwise, the nut 30 rotates relative to the anti-disassembly part 20. When the nut 30 rotates in place, the nut 30 forms an interference with the anti-disassembly part 20 when rotating counterclockwise, and the nut 30 cannot rotate counterclockwise, realizing the one-way rotation of the nut 30, realizing the anti-disassembly function of non-return disassembly, and ensuring the anti-disassembly effect of the anti-disassembly actuator 100.

[0048] Please refer to the attached Figures 1-3 And Figure 6, in the embodiment of the present application, the anti-disassembly part 20 is positioned and connected to the actuator 10; the nut 30 is rotatably connected to the actuator 10; the nut 30 is arranged on the anti-disassembly part 20, and the nut 30 can be engaged with the anti-disassembly part 20 during rotation and forms an anti-disassembly connection structure with the anti-disassembly part 20; the nut 30 is used to connect the valve 210. At this time, the nut 30 rotates clockwise, the nut 30 rotates relative to the anti-disassembly part 20. When the nut 30 rotates in place, the nut 30 forms an interference with the anti-disassembly part 20 when rotating counterclockwise, and the nut 30 cannot rotate counterclockwise, realizing the one-way rotation of the nut 30, realizing the anti-disassembly function of non-return disassembly, and ensuring the anti-disassembly effect of the anti-disassembly actuator 100.

[0049] Please refer to the attached Figures 1-3And 6, the anti-disassembly part 20 is arranged statically relative to the actuator 10 so as to facilitate the fixation of the anti-disassembly part 20 to the actuator 10; the nut 30 rotates relative to the valve 210 so as to facilitate the adjustment of the position of the nut 30 relative to the valve 210, thereby facilitating the connection of the nut 30 to the valve 210. The nut 30 can rotate within the anti-disassembly part 20 until the nut 30 engages with the anti-disassembly part 20, so as to facilitate the nut 30 to engage with the anti-disassembly part 20 during rotation. The nut 30 and the anti-disassembly part 20 form an anti-disassembly connection structure, realizing the anti-disassembly function of the one-way rotation and non-rotatable disassembly of the nut 30, thereby achieving the purpose of locking and preventing disassembly.

[0050] Please refer to the appendix Figures 1-2 As shown in FIGS. 5 and 6, the nut 30 rotates in the clockwise direction and rotates relative to the valve 210; the nut 30 and the anti-disassembly part 20 are in an engaging connection, restricting the counterclockwise rotation of the nut 30. At this time, the nut 30 realizes the clockwise rotation relative to the anti-disassembly part 20 through the engaging connection, avoiding the counterclockwise rotation of the nut 30 relative to the anti-disassembly part 20, realizing the anti-disassembly function of the one-way rotation and non-rotatable disassembly of the nut 30, thereby achieving the purpose of locking and preventing disassembly.

[0051] Please refer to the appendix Figures 1-3 As shown in FIGS. 5 and 6, the nut 30 is sleeved within the anti-disassembly part 20; the anti-disassembly part 20 is provided with a first anti-disassembly portion 21; the nut 30 is provided with a second anti-disassembly portion 31, and the second anti-disassembly portion 31 engages with the first anti-disassembly portion 21 as the nut 30 rotates. An anti-disassembly connection structure is formed between the second anti-disassembly portion 31 and the first anti-disassembly portion 21 so as to facilitate the immobility of the second anti-disassembly portion 31 relative to the first anti-disassembly portion 21, achieving the purpose of locking and preventing disassembly of the second anti-disassembly portion 31 relative to the first anti-disassembly portion 21. Thus, it is convenient for the nut 30 to form an anti-disassembly connection structure with the anti-disassembly part 20 through the first anti-disassembly portion 21 and the second anti-disassembly portion 31, realizing the anti-disassembly function of the one-way rotation and non-rotatable disassembly of the nut 30, thereby achieving the purpose of locking and preventing disassembly, so as to facilitate the anti-disassembly effect of the valve 210 and the actuator 10 through the anti-disassembly part 20 and the nut 30, avoiding the separation of the valve 210 from the actuator 10 during rotation, and improving the anti-disassembly effect of the valve 210.

[0052] Please refer to the appendix Figure 5, the anti-disassembly part 20 includes an annular main body 22. The first anti-disassembly part 21 is connected to the annular main body 22 and is arranged obliquely; so that the first anti-disassembly part 21 is fixed to the annular main body 22 along the inclined direction. The second anti-disassembly part 31 is a clamping groove, and the clamping groove is an inclined groove; the first anti-disassembly part 21 is a clamping arm, and the clamping arm is clamped in the clamping groove, so that the clamping arm can be accommodated in the clamping groove, thereby facilitating the clamping arm to limit the position of the clamping groove, preventing the clamping groove from moving relative to the clamping arm, so that the clamping arm cannot move relative to the clamping groove, achieving the purpose of locking and preventing disassembly of the clamping arm relative to the clamping groove, thereby realizing the clamping of the first anti-disassembly part 21 to the second anti-disassembly part 31, so that the first anti-disassembly part 21 and the second anti-disassembly part 31 form an anti-disassembly connection structure, realizing the anti-disassembly function of the nut 30 rotating in one direction and being unable to be rotated and disassembled, thereby achieving the purpose of locking and preventing disassembly, so that the valve 210 can achieve the anti-disassembly effect with the actuator 10 through the anti-disassembly part 20 and the nut 30, avoiding the valve 210 from detaching from the actuator 10 during rotation, improving the anti-disassembly effect of the valve 210, and ensuring the use stability of the valve 210. Optionally, the outer contour of the clamping arm is adapted to the inner contour of the clamping groove.

[0053] Please refer to the appendix Figure 5 , the first anti-disassembly part 21 and the annular main body 22 are integrally connected, ensuring the connection stability between the first anti-disassembly part 21 and the annular main body 22 and improving the connection strength between the first anti-disassembly part 21 and the annular main body 22.

[0054] Please refer to the appendix Figure 5 , there are multiple first anti-disassembly parts 21, and the multiple first anti-disassembly parts 21 are arranged along the circumferential direction of the annular main body 22. The second anti-disassembly part 31 has multiple, and the multiple first anti-disassembly parts 21 correspond to the respective second anti-disassembly parts 31, so that the multiple first anti-disassembly parts 21 and the multiple second anti-disassembly parts 31 are all in an anti-disassembly connection structure. By arranging multiple first anti-disassembly parts 21, the connection stability between the first anti-disassembly part 21 and the second anti-disassembly part 31 is increased, the anti-disengagement effect between the nut 30 and the anti-disassembly part 20 is enhanced, the anti-disassembly function of the nut 30 rotating in one direction and being unable to be rotated and disassembled is realized, thereby achieving the purpose of locking and preventing disassembly, so that the valve 210 can achieve the anti-disassembly effect with the actuator 10 through the anti-disassembly part 20 and the nut 30, avoiding the valve 210 from detaching from the actuator 10 during rotation, improving the anti-disassembly effect of the valve 210, and ensuring the use stability of the valve 210. Optionally, the outer contour of the clamping arm is adapted to the inner contour of the clamping groove.

[0055] Please refer to the appendix Figure 6The annular body 22 is provided with an annular groove 22a, and the first anti-disassembly portion 21 is connected to the inner side wall of the annular groove 22a, so that the first anti-disassembly portion 21 is fixed to the inner side wall of the annular groove 22a; the second anti-disassembly portion 31 is located on the surface of the nut 30 facing the first anti-disassembly portion 21; when the nut 30 is in the annular groove 22a, the nut 30 rotates relative to the annular body 22, and the second anti-disassembly portion 31 gradually approaches the first anti-disassembly portion 21 until the second anti-disassembly portion 31 is engaged with the first anti-disassembly portion 21, so that the nut 30 can be engaged with the anti-disassembly component 20 during the rotation process, and the nut 30 and the anti-disassembly component 20 are in an anti-disassembly connection structure, which is effective. The anti-disassembly function of the nut 30 being able to rotate in one direction and being unable to be disassembled by rotation is realized, thereby achieving the purpose of locking and anti-disassembly, so that the valve 210 can achieve the anti-disassembly effect with the actuator 10 through the anti-disassembly component 20 and the nut 30, and avoids the valve 210 from being separated from the actuator 10 during the rotation process, thereby improving the anti-disassembly effect of the valve 210 and ensuring the stability of the valve 210. Optionally, the anti-disassembly component 20 is an anti-disassembly rubber ring and can be cut off. When the anti-disassembly component 20 is cut off, the valve 210 can be separated from the actuator 10, thereby facilitating the replacement of the valve 210 and improving the convenience of replacing the valve 210.

[0056] Please refer to the attached Figure 6 The actuator 10 is provided with a connecting portion 11; the anti-disassembly component 20 and the nut 30 are both sleeved on the connecting portion 11; so that the anti-disassembly component 20 and the nut 30 can be connected to the actuator 10 through the connecting portion 11, and the nut 30 is sealed and connected to the connecting portion 11, thereby ensuring the sealing effect between the nut 30 and the connecting portion 11 and preventing water leakage at the connection between the nut 30 and the connecting portion 11.

[0057] The valve 210 is provided with an external thread; the nut 30 is provided with an internal thread 32, and the internal thread 32 and the external thread are in a threaded connection structure, so that the nut 30 can be threadedly connected with the valve 210 through the internal thread 32 and the external thread, so that the nut 30 can be engaged with the anti-disassembly component 20 during the rotation process. The nut 30 and the anti-disassembly component 20 are in an anti-disassembly connection structure, which realizes the anti-disassembly function of the nut 30 to rotate in one direction and cannot be rotated and disassembled, thereby achieving the purpose of locking and anti-disassembly, so that the valve 210 can achieve an anti-disassembly effect with the actuator 10 through the anti-disassembly component 20 and the nut 30, avoiding the valve 210 from being separated from the actuator 10 during the rotation process, and improving the anti-disassembly effect of the valve 210.

[0058] The nut 30 has a built-in seal; when the nut 30 is threadedly connected to the valve 210, the nut 30 and the valve 210 squeeze the seal and are sealed together through the seal, thereby ensuring the sealing effect of the valve 210, thereby ensuring the sealing effect of the valve 210 docking with the actuator 10 and preventing water leakage at the connection between the actuator 10 and the valve 210.

[0059] Please refer to the attachedFigure 7 , in another embodiment, a valve device 200 includes an anti-tamper actuator 100 and a valve 210; the valve 210 is connected to the actuator 10 in the anti-tamper actuator 100 and is connected to the nut 30 in the anti-tamper actuator 10, so that the valve 210 can achieve the anti-tamper effect with the actuator 10 through the anti-tamper member 20 and the nut 30, avoiding the separation of the valve 210 from the actuator 10 during rotation and improving the anti-tamper effect of the valve 210.

[0060] The valve 210 is provided with an external thread; the nut 30 is provided with an internal thread 32, and the internal thread 32 and the external thread form a threaded connection structure, so that the nut 30 can be threadedly connected to the valve 210 through the internal thread 32 and the external thread, facilitating the nut 30 to engage with the anti-tamper member 20 during rotation. The nut 30 and the anti-tamper member 20 form an anti-tamper connection structure, realizing the anti-tamper function of the one-way rotation and non-rotatable disassembly of the nut 30, thus achieving the purpose of locking and preventing disassembly, so that the valve 210 can achieve the anti-tamper effect with the actuator 10 through the anti-tamper member 20 and the nut 30, avoiding the separation of the valve 210 from the actuator 10 during rotation and improving the anti-tamper effect of the valve 210.

[0061] A seal is provided inside the nut 30; when the nut 30 is screwed onto the valve 210, the nut 30 and the valve 210 squeeze the seal, and are hermetically connected through the seal, ensuring the sealing effect of the valve 210, thereby ensuring the sealing effect of the connection between the valve 210 and the actuator 10 and preventing water leakage at the connection between the actuator 10 and the valve 210.

[0062] Compared with the prior art, the beneficial effects of the present utility model are:

[0063] The present utility model provides an anti-tamper actuator 100, the anti-tamper member 20 is positioned and connected to the actuator 10; the nut 30 is rotatably connected to the actuator 10; the nut 30 is arranged on the anti-tamper member 20, and the nut 30 can engage with the anti-tamper member 20 during rotation and forms an anti-tamper connection structure with the anti-tamper member 20; the nut 30 is used to connect the valve. At this time, when the nut 30 rotates clockwise, the nut 30 rotates relative to the anti-tamper member 20. When the nut 30 rotates in place, the nut 30 interferes with the anti-tamper member 20 when rotating counterclockwise, and the nut 30 cannot rotate counterclockwise, realizing the one-way rotation of the nut 30 and the anti-tamper function of non-rotatable disassembly, ensuring the anti-tamper effect of the anti-tamper actuator 100.

[0064] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0065] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0066] Specific examples are used herein to illustrate the principles and implementation manners of this application. The description of the above embodiments is only for helping to understand the method and its core idea of this application. At the same time, for those skilled in the art, according to the idea of this application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. An anti-disassembly actuator, characterized in that, Applied to a valve device, the anti-disassembly actuator includes: An actuator; An anti-disassembly part, which is positioned and connected to the actuator; A nut, which is rotatably connected to the actuator; the nut is arranged on the anti-disassembly part, and the nut can be engaged with the anti-disassembly part during rotation and forms an anti-disassembly connection structure with the anti-disassembly part; the nut is used to connect the valve.

2. The anti-disassembly actuator according to claim 1, wherein The anti-disassembly part is arranged statically relative to the actuator; The nut rotates relative to the valve and can rotate relative to the anti-disassembly part until the nut is engaged with the anti-disassembly part.

3. The anti-disassembly actuator according to claim 2, wherein The nut rotates in the clockwise direction and rotates relative to the valve; The nut is in an engaged connection with the anti-disassembly part and restricts the counterclockwise rotation of the nut.

4. The anti-disassembly actuator according to claim 3, characterized in that, The nut is sleeved inside the anti-disassembly part; The anti-disassembly part is provided with a first anti-disassembly part; The nut is provided with a second anti-disassembly part, and the second anti-disassembly part is engaged with the first anti-disassembly part as the nut rotates, and restricts the counterclockwise rotation of the nut.

5. The anti-disassembly actuator according to claim 4, characterized in that, The anti-disassembly part includes an annular main body, and the first anti-disassembly part is connected to the annular main body and is arranged obliquely; The second anti-disassembly part is an engaging groove, and the engaging groove is an inclined groove; The first anti-disassembly part is an engaging arm, and the engaging arm is engaged with the engaging groove.

6. The anti-tamper actuator according to claim 5, characterized in that, There are multiple first anti-disassembly parts, and the multiple first anti-disassembly parts are arranged along the circumferential direction of the annular main body and correspond to each second anti-disassembly part.

7. The anti-tamper actuator according to claim 5, wherein, The annular main body is provided with an annular groove, and the first anti-disassembly part is connected to the inner side wall of the annular groove; The second anti-disassembly part is on the surface of the nut facing the first anti-disassembly part; When the nut is in the annular groove, the nut rotates relative to the annular main body, and the second anti-disassembly part gradually approaches the first anti-disassembly part until the second anti-disassembly part is in an engaged connection with the first anti-disassembly part.

8. The anti-disassembly actuator according to any one of claims 1 to 7, characterized in that, The anti-disassembly part is an anti-disassembly rubber ring and can be truncated.

9. The anti-tamper actuator according to any one of claims 1 to 7, characterized in that, The actuator is provided with a connecting part; Both the anti-disassembly part and the nut are sleeved on the connecting part; The nut is in a sealed connection with the connecting part.

10. A valve device, characterized in that, It includes the anti-disassembly actuator and the valve according to any one of claims 1 to 9; the valve is docked with the actuator in the anti-disassembly actuator and is connected to the nut in the anti-disassembly actuator.