Valve detection device

Abstract

The embodiment of the utility model provides a valve detection device. The valve detection device comprises a shaft assembly, a detection assembly, a first adjustable support and a second adjustable support. The shaft assembly is detachably connected to the valve rod. The detection assembly comprises a shell and a detection part, the detection part is rotatably arranged on the shell around the axis extending in the first direction, the detection part is detachably connected to the shaft assembly, and the detection assembly is configured to detect the rotation angle of the shaft assembly when the detection part rotates along with the shaft assembly. The first adjustable support is detachably connected to the shell. The second adjustable support is detachably connected to the valve body, and the second adjustable support is configured to limit the first adjustable support to rotate around the axis extending in the first direction and allow the first adjustable support to move relative to the second adjustable support in the first direction. The shaft assembly of the valve detection device is a replaceable part, so that the compatibility of other parts of the valve detection device is improved, and the manufacturing cost of the valve detection device is reduced.

Description

Technical Field

[0001] This application relates to the field of valve testing technology, and more specifically, to a valve testing device. Background Technology

[0002] A valve is a device used in pipelines to control the flow of fluid within them. By adjusting the valve's opening degree, the flow rate of the fluid in the pipeline can be controlled. To confirm the valve's open and closed status, a valve detection device can be installed on the valve to obtain its status, facilitating unified valve management. However, there are many types of valves, and different types of valves require corresponding valve detection devices, increasing the manufacturing cost of these devices. Utility Model Content

[0003] This application provides a valve testing device to reduce the manufacturing cost of valve testing devices.

[0004] This application provides a valve detection device. The valve includes a valve body and a valve stem, with the valve stem rotatably mounted on the valve body along its own axis. The valve detection device includes a shaft assembly, a detection assembly, a first adjustable bracket, and a second adjustable bracket. The shaft assembly is detachably connected to the valve stem. The detection assembly includes a housing and a detection part, which is rotatably mounted on the housing about an axis extending in a first direction. The detection part is detachably connected to the shaft assembly, and the detection assembly is configured to detect the rotation angle of the shaft assembly when the detection part rotates with the shaft assembly. The first adjustable bracket is detachably connected to the housing. The second adjustable bracket is detachably connected to the valve body and is configured to restrict the rotation of the first adjustable bracket about the axis extending in the first direction, while allowing the first adjustable bracket to move relative to the second adjustable bracket in the first direction.

[0005] In the above technical solution, by setting the detection unit to be detachably connected to the shaft assembly, and the shaft assembly to be detachably connected to the valve stem, the shaft assembly of the valve detection device becomes a replaceable part. When dealing with different types of valves, the shaft assembly of the valve detection device can be replaced to adapt the valve detection device to the corresponding valve model, thereby reducing the need for parts replacement and improving the compatibility of other parts of the valve detection device. By setting a second adjustable bracket to restrict the rotation of the first adjustable bracket around the axis extending along the first direction, the detection unit can detect the rotation angle of the shaft assembly when it rotates relative to the housing. By setting a second adjustable bracket to allow the first adjustable bracket to move relative to the second adjustable bracket along the first direction, the shaft assembly, detection assembly, and first adjustable bracket can move along the first direction with the valve stem, allowing the valve detection device to detect the opening and closing state of the valve during the movement of the valve along the first direction. This makes the valve detection device suitable not only for valves such as ball valves and butterfly valves that open and close by rotation, but also for valves such as gate valves that both rotate and move along the extension direction of the rotation axis, improving the compatibility of the valve detection device and reducing its manufacturing cost.

[0006] In some embodiments, the shaft assembly includes a shaft body and a first limiting member; the shaft body extends along a first direction, and the detection part is detachably connected to the shaft body; the first limiting member is detachably connected to the shaft body, and the first limiting member is provided with a first limiting hole for cooperating with a valve stem to circumferentially lock the shaft body and the valve stem.

[0007] In this embodiment, by providing a first limiting member detachably connected to the shaft body, the service life of the shaft body can be extended by replacing the first limiting member if it is damaged. By providing a first limiting hole on the first limiting member for engaging with the valve stem, the first limiting block can achieve circumferential locking of the shaft body and the valve stem, allowing the shaft body to drive the valve to rotate around an axis extending in a first direction. This enables the detection component to detect the rotation angle of the valve stem. When dealing with different valve models, only the model of the first limiting member needs to be changed so that the first limiting hole of the first limiting member is compatible with the valve stem of the corresponding valve model. This makes the valve detection device compatible with the corresponding valve model, improving the compatibility of the valve detection device and reducing its manufacturing cost.

[0008] In some embodiments, the first limiting member includes a first portion located at one end of the shaft body along a first direction, a first limiting hole disposed in the first portion, and a first threaded hole disposed at one end of the shaft body near the first portion for threaded engagement with a valve stem. By providing a first threaded hole at one end of the shaft body near the first portion, the first threaded hole can engage with the valve stem to lock the valve stem and the shaft body, reducing the risk of the shaft body detaching from the valve stem during testing and improving the assembly stability of the valve testing device and the valve.

[0009] In some embodiments, the shaft assembly further includes a first locking member configured to detachably lock the first limiting member and the shaft body. By providing the first locking member, a detachable connection between the first limiting member and the shaft body is achieved, making the assembly and disassembly of the first limiting member and the shaft body more convenient.

[0010] In some embodiments, the first limiting member includes a first part and a second part; the first part is located at one end of the shaft body along a first direction, and a first limiting hole is disposed in the first part; the second part is connected to the first part and is disposed facing the outer peripheral surface of the shaft body, and the first locking member is configured to unlockably lock the second part and the shaft body. By disposing the first part at one end of the shaft body along the first direction and disposing the first limiting hole at the first part, the first limiting hole is located at one end of the shaft body along the first direction, facilitating the engagement of the first limiting hole with the valve stem. By locking the shaft body and the second part facing the outer peripheral surface of the shaft body with the first locking member, on the one hand, a detachable connection between the second part and the shaft body is achieved, facilitating the assembly and disassembly of the first limiting member and the shaft body; on the other hand, the interference of the engagement of the second part with the shaft body on the engagement of the first limiting hole with the valve stem can be reduced, making the engagement of the first limiting member and the valve stem more convenient.

[0011] In some embodiments, the shaft body has a mounting end along a first direction for mounting to a valve stem; a detection part is sleeved on the shaft body, and the shaft body is provided with the mounting part, which is located on the side of the shaft body away from the mounting end along the first direction and is detachably connected to the detection part. This arrangement, with the detection part located away from the mounting end, reduces the risk of interference between the detection part and the valve.

[0012] In some embodiments, the shaft body includes a first shaft portion and a second shaft portion; a mounting portion is disposed on the first shaft portion and protrudes from the outer peripheral surface of the first shaft portion; the second shaft portion is connected to the first shaft portion, with the end of the second shaft portion away from the first shaft portion being the mounting end; a limiting member is detachably connected to the second shaft portion, and the second shaft portion is detachably connected to the first shaft portion. By providing a detachable connection between the first shaft portion and the second shaft portion, on the one hand, the first shaft portion or the second shaft portion can be replaced accordingly when damaged, thereby improving the service life of the shaft body; on the other hand, the second shaft portion can be replaced according to the valve model, thereby improving the compatibility of the first shaft portion and further reducing the manufacturing cost of the valve detection device.

[0013] In some embodiments, the second adjustable bracket includes a second limiting member, which includes two limiting portions disposed opposite each other along a second direction, the second direction intersecting the first direction; the first adjustable bracket includes a third limiting member, which is inserted between the two limiting portions, and the two limiting portions cooperate to restrict the rotation of the third limiting member about an axis extending along the first direction. In this way, the two limiting portions can cooperate to restrict the rotation of the first adjustable bracket about an axis extending along the first direction, which is beneficial for the rotation of the detection unit relative to the housing, so as to realize the detection of the valve stem rotation angle during rotation. By limiting the position of the third limiting member by the two limiting portions, the positional accuracy of the third limiting member can be improved, thereby improving the detection accuracy of the valve detection device.

[0014] In some embodiments, the first adjustable bracket further includes a mounting base detachably connected to the housing, and a third limiting member adjustablely connected to the mounting base along a third direction. The first, second, and third directions are not coplanar and intersect each other. By providing a detachable connection between the mounting base and the housing, the replacement of the mounting base and the detection assembly is facilitated, improving the compatibility of other parts. Thus, when dealing with different types of valve stems, the assembly of the detection assembly and the shaft assembly can be achieved by adjusting the position of the third limiting member along the third direction, improving the compatibility of the valve detection device.

[0015] In some embodiments, the second limiting member is provided with a second limiting hole, and the two limiting portions are two hole walls of the second limiting hole arranged opposite to each other along the second direction. In this way, the second limiting hole can restrict the position of the third limiting member along the second direction, and the second limiting hole can also restrict the position of the third limiting member along the third direction, reducing the risk of the third limiting member disengaging from the two limiting portions, and making the assembly of the second adjustable bracket and the first adjustable bracket more stable.

[0016] In some embodiments, the second adjustable bracket further includes a clamping assembly connected to the second limiting member, the clamping assembly being used to clamp the valve body. Connecting the second adjustable bracket to the valve body via clamping facilitates the assembly and disassembly of the second adjustable bracket and the valve body, reducing the difficulty of such assembly and disassembly.

[0017] In some embodiments, the clamping assembly includes a first clamping member, a second clamping member, and an adjusting member. The first and second clamping members are disposed opposite to each other and are used to clamp the valve body. The adjusting member connects the first and second clamping members and is used to adjust the distance between the first and second clamping members. By adjusting the first and second clamping members, the clamping assembly can be adapted to different types of valves. When the valve types are different, adjusting the distance between the first and second clamping members allows them to clamp the corresponding valve types, thus connecting the second adjustable bracket to the valve. Furthermore, it allows the clamping assembly to be adjusted to different positions on the valve body, making the installation of the second adjustable bracket more convenient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a valve assembly provided in some embodiments of this application;

[0020] Figure 2 This application provides schematic diagrams of the valve structure for some embodiments.

[0021] Figure 3 This is a schematic diagram of the structure of a valve detection device provided in some embodiments of this application;

[0022] Figure 4 Exploded views of shaft assemblies provided in some embodiments of this application;

[0023] Figure 5 Cross-sectional views of shaft assemblies provided in some embodiments of this application;

[0024] Figure 6 for Figure 3 AA section view;

[0025] Figure 7 Exploded views of a first adjustable bracket and a second adjustable bracket provided for some embodiments of this application.

[0026] Icons: 1-Shaft assembly; 11-Shaft body; 111-First limiting groove; 112-First threaded hole; 113-Mounting end; 114-First shaft portion; 1141-First locking hole; 115-Second shaft portion; 1151-Second locking hole; 116-First locking pin; 12-First limiting member; 121-First limiting hole; 122-First part; 123-Second part; 13-First locking member; 14-Mounting part;

[0027] 2-Detection component; 21-Housing; 22-Detection section;

[0028] 3-First adjustable bracket; 31-Third limiting component; 32-Mounting base; 33-First locking component; 34-Locking cap;

[0029] 4-Second adjustable bracket; 41-Second limiting member; 411-Second limiting hole; 4111-Limiting part; 42-Clamping assembly; 421-First clamping member; 422-Second clamping member; 423-Adjusting member;

[0030] 10-Valve detection device; 20-Valve; 201-Valve stem; 2011-Threaded part; 2012-Limiting part; 202-Valve body; 203-Rotator; 100-Valve assembly; Z-First direction; X-Second direction; Y-Third direction. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0033] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0034] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0035] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0036] In this application, "multiple" means two or more (including two).

[0037] In this embodiment, the valve includes a valve body and a valve stem, with the valve stem rotatably mounted on the valve body along its own axis. The valve can be a ball valve, a butterfly valve, etc., in which the valve stem is rotatably mounted on the valve body only around its own axis; the valve can also be a gate valve, in which the valve stem is rotatably mounted on the valve body around its own axis, and the valve stem is movable on the valve body along the extension direction of its own axis.

[0038] In pipeline fluid control, the opening and closing of pipelines and fluid flow can be regulated by controlling the valve opening degree. Valves are widely used in many industrial fields. With the increasing application of valves, the opening degree of many valves has become important information for the stable operation of pipelines. In order to monitor the status of each valve, valve detection devices can be used to detect the valve opening degree in real time, so as to transmit the valve position information to the background control system for unified management of valve status. Generally, the valve detection device can be connected to the valve stem, and the valve opening degree can be determined by monitoring the position information of the valve stem.

[0039] However, there are numerous valve models commonly used, and valve testing devices are difficult to be compatible with multiple valve models. To achieve condition monitoring for various valve models, different valve testing devices need to be set up. Manufacturing valve testing devices requires producing parts corresponding to various specifications of valve testing devices, which is a cumbersome and costly process.

[0040] Based on this, in order to reduce the manufacturing cost of the valve detection device, this application provides a valve detection device, including a shaft assembly, a detection assembly, a first adjustable bracket, and a second adjustable bracket; the shaft assembly is detachably connected to the valve stem; the detection assembly includes a housing and a detection part, the detection part is rotatably disposed on the housing about an axis extending along a first direction Z, the detection part is detachably connected to the shaft assembly, and the detection assembly is configured to detect the rotation angle of the shaft assembly when the detection part rotates with the shaft assembly; the first adjustable bracket is detachably connected to the housing; the second adjustable bracket is detachably connected to the valve body, and the second adjustable bracket is configured to restrict the rotation of the first adjustable bracket about an axis extending along the first direction Z, and allow the first adjustable bracket to move relative to the second adjustable bracket along the first direction Z.

[0041] In such a valve testing device, the testing unit is detachably connected to the shaft assembly, and the shaft assembly can be detachably connected to the valve stem. This makes the shaft assembly of the valve testing device a replaceable part. When dealing with different types of valves, the shaft assembly of the valve testing device can be replaced to adapt the valve testing device to the corresponding valve model. This reduces the need for parts replacement in the valve testing device, improves the compatibility of other parts of the valve testing device, and reduces the manufacturing cost of the valve testing device.

[0042] The valve testing device and the valve assembly using the valve testing device are described in detail below with reference to the accompanying drawings.

[0043] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the valve assembly 100 provided in some embodiments of this application; Figure 2 This is a schematic diagram of the structure of a valve 20 provided in some embodiments of this application. Embodiments of this application provide a valve assembly 100, including a valve 20 and a valve detection device 10. The valve 20 includes a valve body 202 and a valve stem 201. The valve stem 201 is rotatably disposed on the valve body 202 along its own axis, and the valve detection device 10 is detachably mounted on the valve body 202 and the valve stem 201.

[0044] The valve body 202 of valve 20 is connected to the pipeline whose on / off state needs to be controlled. One end of the valve stem 201 of valve 20 is inserted into the valve body 202. The opening degree of valve 20 is controlled by controlling the position of the valve stem 201 within the valve body 202. The other end of the valve stem 201 is located outside the valve body 202. The opening degree of valve 20 can be adjusted by rotating the end of the valve stem 201 outside the valve body 202. Alternatively, the valve stem 201 can only rotate around its own axis, rotating within the valve body 202 to adjust the opening degree of valve 20. For example, the valve could be a ball valve or a butterfly valve. Or, the valve stem 201 can rotate around its own axis while simultaneously moving along its own axis, allowing it to move along its own axis within the valve body 202 to adjust the opening degree of valve 20. For example, the valve could be a gate valve. The valve detection device 10 is connected to the valve body 202 and the valve stem 201. The valve detection device 10 detects the rotation angle of the valve stem 201 relative to the valve body 202 to determine the opening degree of the valve 20. It can be understood that the valve 20 has a valve core (not shown in the figure), which is located inside the valve body 202. The valve stem 201 can drive the valve core to move, thereby adjusting the opening degree of the valve 20.

[0045] In some embodiments, valve 20 further includes a rotary wheel 203 connected to valve stem 201, which drives valve stem 201 to rotate about its own axis.

[0046] In some embodiments, the valve body 202 and the valve stem 201 are threadedly connected. The valve body 202 is provided with an internal thread, and the valve stem 201 is provided with an external thread. The internal thread and the external thread engage so that the valve stem 201 moves along its own axis when it rotates within the valve body 202.

[0047] In some embodiments, the valve stem 201 includes a threaded portion 2011 and a limiting portion 2012. The threaded portion 2011 is used to cooperate with the valve body 202. The limiting portion 2012 is used to cooperate with the rotating wheel 203 to drive the limiting portion 2012 to rotate when the rotating wheel 203 is rotated, so as to drive the threaded portion 2011 to rotate within the valve body 202.

[0048] Please refer to Figure 3 , Figure 3This is a schematic diagram of the structure of a valve detection device 10 provided in some embodiments of this application. Embodiments of this application provide a valve detection device 10, including a shaft assembly 1, a detection assembly 2, a first adjustable bracket 3, and a second adjustable bracket 4. The shaft assembly 1 is detachably connected to a valve stem 201. The detection assembly 2 includes a housing 21 and a detection part 22. The detection part 22 is rotatably disposed on the housing 21 about an axis extending along a first direction Z. The detection part 22 is detachably connected to the shaft assembly 1. The detection assembly 2 is configured to detect the rotation angle of the shaft assembly 1 when the detection part 22 rotates with the shaft assembly 1. The first adjustable bracket 3 is detachably connected to the housing 21. The second adjustable bracket 4 is detachably connected to the valve body 202. The second adjustable bracket 4 is configured to restrict the rotation of the first adjustable bracket 3 about an axis extending along the first direction Z, and allow the first adjustable bracket 3 to move relative to the second adjustable bracket 4 along the first direction Z.

[0049] The shaft assembly 1 is used for detachable connection to the valve stem 201. The shaft assembly 1 can mate with the limiting portion 2012 of the valve stem 201 to achieve a detachable connection between the shaft assembly 1 and the valve stem 201. The detachable connection between the shaft assembly 1 and the valve stem 201 can be achieved via a locking accessory, which can be a bolt; alternatively, the shaft assembly 1 and the valve stem 201 can be snapped together. After the shaft assembly 1 and the valve stem 201 are connected, the shaft assembly 1 and the valve stem 201 can rotate synchronously.

[0050] The detection component 2 is used to detect the rotation angle of the shaft assembly 1. Based on the rotation angle of the shaft assembly 1, the rotation angle of the valve stem 201 is determined to determine the opening degree of the valve 20. The detection part 22 of the detection component 2 is detachably connected to the shaft assembly 1. This connection can be achieved by bolts or by snap-fitting. The detection part 22 can rotate relative to the housing 21 along an axis extending in the first direction Z, allowing the detection component 2 to detect the rotation angle of the detection part 22. When the valve detection device 10 is installed on the valve 20, the first direction Z can be parallel to the extension direction of the valve stem 201, meaning the extension direction of the valve stem 201 along its own axis is parallel to the first direction Z. The detection part 22 rotates synchronously with the shaft assembly 1, and the shaft assembly 1 rotates synchronously with the valve stem 201. The rotation angle of the detection part 22 is the rotation angle of the valve stem 201.

[0051] The first adjustable bracket 3 is detachably connected to the housing 21. This connection can be achieved through snap-fitting, plug-in, or fastening, where the fastener can be a bolt. The second adjustable bracket 4 is detachably connected to the valve body 202. This connection can also be achieved through snap-fitting, plug-in, or fastening, where the fastener can be a bolt. It is understood that the second adjustable bracket 4 can be connected to the valve body 202 or to a device that is relatively stationary relative to the valve body 202. For example, if the valve 20 is connected to a pipe, the second adjustable bracket 4 can be mounted on a support for the pipe, with the support stationary relative to the valve body 202. The second adjustable bracket 4 restricts the rotation of the first adjustable bracket 3 about an axis extending in the first direction Z, thereby restricting the rotation of the housing 21 relative to the valve body 202 about an axis extending in the first direction Z. In an embodiment where the valve stem 201 can only rotate about its own axis, the second adjustable bracket 4 is configured to restrict the rotation of the first adjustable bracket 3 about an axis extending along the first direction Z; wherein, the valve 20 can be a ball valve, butterfly valve, etc. In an embodiment where the valve stem 201 can rotate about its own axis and can move along the extension direction of its own axis, the first adjustable bracket 3 can move relative to the second adjustable bracket 4 along the first direction Z, and the second adjustable bracket 4 can restrict the rotation of the first adjustable bracket 3 about an axis extending along the first direction Z; wherein, the valve 20 can be a gate valve.

[0052] In this embodiment, by setting the detection unit 22 to be detachably connected to the shaft assembly 1, and the shaft assembly 1 to be detachably connected to the valve stem 201, the shaft assembly 1 of the valve detection device 10 is a replaceable part. When facing different models of valves 20, the shaft assembly 1 of the valve detection device 10 can be replaced to adapt the valve detection device 10 to the corresponding model of valve 20, thereby reducing the replacement of parts of the valve detection device 10 and improving the compatibility of other parts of the valve detection device 10. By setting a second adjustable bracket 4 to restrict the rotation of the first adjustable bracket 3 around an axis extending along the first direction Z, when the shaft assembly 1 rotates, the detection unit 22 can detect the rotation angle of the shaft assembly 1 when it rotates relative to the housing 21. By detecting the rotation angle of the shaft assembly 1, the rotation angle of the valve stem 201 is identified, thereby determining the opening degree of the valve 20. By setting a second adjustable bracket 4, the first adjustable bracket 3 is allowed to move relative to the second adjustable bracket 4 along the first direction Z. The shaft assembly 1, the detection assembly 2, and the first adjustable bracket 3 can follow the valve stem 201 to move along the first direction Z, so that the valve detection device 10 can detect the opening and closing state of the valve 20 during the movement of the valve 20 along the first direction Z. This makes the valve detection device 10 applicable not only to valves 20 that are opened and closed by rotation, such as ball valves and butterfly valves, but also to valves 20 that both rotate and move along the extension direction of the rotation axis, such as gate valves. This improves the compatibility of the valve detection device 10 and reduces its manufacturing cost.

[0053] In some embodiments, the detection assembly 2 further includes a detection circuit board, a sensing element, and a detection element that senses the sensing element. The detection circuit board is disposed within the housing 21. The sensing element is disposed within the detection section 22 to rotate with the detection section 22. The detection element is disposed within the detection circuit board. When the valve stem 201 rotates, the shaft assembly 1 drives the detection section 22 to rotate, thereby causing the sensing element to rotate within the housing 21. The sensing element and the detection element sense each other, and the detection element sends a signal to the detection circuit board, waking up the detection circuit board. This enables the detection circuit board to receive the detection signal sent by the detection section 22, thereby detecting the process state of the valve 20.

[0054] In some embodiments, please refer to Figure 4 and Figure 5 , Figure 4 Exploded view of shaft assembly 1 provided in some embodiments of this application; Figure 5 This is a cross-sectional view of a shaft assembly 1 provided in some embodiments of this application. The shaft assembly 1 includes a shaft body 11 and a first limiting member 12. The shaft body 11 extends along a first direction Z, and the detection part 22 is detachably connected to the shaft body 11. The first limiting member 12 is detachably connected to the shaft body 11 and is provided with a first limiting hole 121. The first limiting hole 121 is used to cooperate with the valve stem 201 to circumferentially lock the shaft body 11 and the valve stem 201.

[0055] The shaft body 11 and the detection unit 22 are detachably connected, which can be by snap-fitting, sleeve-fitting or fastening the shaft body 11 and the detection unit 22; wherein, the fastener can be a bolt.

[0056] The first limiting member 12 is detachably connected to the shaft body 11. This connection can be achieved by snapping, sleeve-fitting, or fastening the first limiting member 12 to the shaft body 11; the fastener can be a bolt. For example, one end of the shaft body 11 along the first direction Z is provided with a first limiting groove 111 that matches the first limiting member 12. The first limiting member 12 is engaged within the first limiting groove 111, and the first limiting groove 111 and the first limiting member 12 are circumferentially locked.

[0057] The shape of the first limiting hole 121 is adapted to the valve stem 201 so that the first limiting hole 121 can cooperate with the valve stem 201. For example, the limiting portion 2012 of the valve stem 201 has a square structure, the first limiting hole 121 is a square hole, and the hole wall of the first limiting hole 121 abuts against the outer side wall of the limiting portion 2012 to axially lock the shaft body 11 and the valve stem 201.

[0058] In this embodiment, by setting the first limiting member 12 to be detachably connected to the shaft body 11, the service life of the shaft body 11 can be extended by replacing the first limiting member 12 when it is damaged. By setting the first limiting hole 121 on the first limiting member 12 for cooperating with the valve stem 201, the first limiting block can realize the circumferential locking of the shaft body 11 and the valve stem 201, so that the shaft body 11 can drive the valve 20 to rotate around the axis extending along the first direction Z, thereby realizing the detection component 2 to detect the rotation angle of the valve stem 201. When facing different models of valve 20, only the model of the first limiting member 12 needs to be changed so that the first limiting hole 121 of the first limiting member 12 is adapted to the valve stem 201 of the corresponding model of valve 20, thereby making the valve detection device 10 adaptable to the corresponding model of valve 20, improving the compatibility of the valve detection device 10 and reducing the manufacturing cost of the valve detection device 10.

[0059] In some embodiments, please continue to refer to Figure 4 and Figure 5 The first limiting member 12 includes a first part 122, which is located at one end of the shaft body 11 along the first direction Z. A first limiting hole 121 is provided in the first part 122. A first threaded hole 112 is provided at one end of the shaft body 11 near the first part 122. The first threaded hole 112 is used to thread with the valve stem 201.

[0060] A first portion 122 is provided at one end of the shaft body 11 along the first direction Z, and the other end of the shaft body 11 along the first direction Z can be used to set the rotating wheel 203. A first limiting hole 121 is provided at the first portion 122, such that the first limiting hole 121 is located at one end of the shaft body 11 along the first direction Z. A first threaded hole 112 is provided at one end of the shaft body 11 near the first portion 122, and the first threaded hole 112 communicates with the first limiting hole 121. The limiting portion 2012 of the valve stem 201 can pass through the first limiting hole 121 and be threadedly engaged with the first threaded hole 112.

[0061] In this embodiment, by providing a first threaded hole 112 at one end of the shaft body 11 near the first part 122, the first threaded hole 112 can cooperate with the valve stem 201 to lock the valve stem 201 and the shaft body 11, thereby reducing the risk of the shaft body 11 falling off the valve stem 201 during the detection process and improving the assembly stability of the valve detection device 10 and the valve 20.

[0062] In some embodiments, please continue to refer to Figure 4 and Figure 5 The shaft assembly 1 also includes a first locking member 13, which is configured to unlockably lock the first limiting member 12 and the shaft body 11.

[0063] The first locking element 13 can be a locking pin, clamp, bolt, etc. For example, the first locking element 13 is a bolt, the shaft body 11 is provided with a locking hole for cooperating with the first locking element 13, the first limiting element 12 is provided with a through hole, and the first locking element 13 passes through the through hole and cooperates with the locking hole to lock the first limiting element 12 and the shaft body 11.

[0064] In this embodiment, by providing a first locking member 13, the first limiting member 12 and the shaft body 11 are detachably connected, making it easier to assemble and disassemble the first limiting member 12 and the shaft body 11.

[0065] In some embodiments, the first limiting member 12 includes a first portion 122 and a second portion 123; the first portion 122 is located at one end of the shaft body 11 along the first direction Z, and a first limiting hole 121 is disposed in the first portion 122; the second portion 123 is connected to the first portion 122, and the second portion 123 is disposed facing the outer peripheral surface of the shaft body 11, and the first locking member 13 is configured to unlockably lock the second portion 123 and the shaft body 11.

[0066] The first part 122 and the second part 123 can be integrally formed or separately set and connected. When the valve detection device 10 is assembled on the valve 20, the first part 122 is the part of the first limiting member 12 located at the end of the shaft body 11 near the valve body 202.

[0067] The second part 123 can be one or more. In an embodiment where there are multiple second parts 123, each second part 123 is connected to the first part 122, and each second part 123 corresponds to a first locking member 13. Each second part 123 is locked to the shaft body 11 by the first locking member 13.

[0068] In this embodiment, by setting the first portion 122 at one end of the shaft body 11 along the first direction Z and setting the first limiting hole 121 at the first portion 122, the first limiting hole 121 is located at one end of the shaft body 11 along the first direction Z, which facilitates the engagement of the first limiting hole 121 with the valve stem 201. The first locking member 13 locks the shaft body 11 and the second portion 123 facing the outer peripheral surface of the shaft body 11. On the one hand, this achieves a detachable connection between the second portion 123 and the shaft body 11, which facilitates the assembly and disassembly of the first limiting member 12 and the shaft body 11. On the other hand, it reduces the interference of the engagement of the second portion 123 with the shaft body 11 on the engagement of the first limiting hole 121 with the valve stem 201, making the engagement of the first limiting member 12 and the valve stem 201 more convenient.

[0069] In some embodiments, please refer to Figure 6 , Figure 6 for Figure 3A sectional view AA. The shaft body 11 has a mounting end 113 along the first direction Z for mounting to the valve stem 201. The detection part 22 is sleeved on the shaft body 11, and the shaft body 11 is provided with a mounting part 14. Along the first direction Z, the mounting part 14 is located on the side of the shaft body 11 away from the mounting end 113 and is detachably connected to the detection part 22.

[0070] The mounting end 113 is located at one end of the shaft body 11 near the valve stem 201. In an embodiment where the shaft body 11 is connected to the first limiting member 12, the first limiting member 12 is connected to the mounting end 113 of the shaft body 11.

[0071] The mounting part 14 can be integrally formed with the shaft body 11; alternatively, the mounting part 14 and the shaft body 11 can be separately configured and connected, for example, the mounting part 14 and the shaft body 11 can be connected by bolts. The mounting part 14 is located near the rotating wheel 203. The mounting part 14 connects the detection part 22 and the shaft body 11. The mounting part 14 can be snapped, sleeved, or fastened to the detection part 22, and the fastener can be a bolt.

[0072] In this embodiment, the detection unit 22 is positioned away from the mounting end 113, which reduces the risk of interference between the detection unit 22 and the valve 20.

[0073] In some embodiments, please continue to refer to Figures 4-6 The shaft body 11 includes a first shaft portion 114 and a second shaft portion 115. A mounting portion 14 is disposed on the first shaft portion 114 and protrudes from the outer peripheral surface of the first shaft portion 114. The second shaft portion 115 is connected to the first shaft portion 114, and the end of the second shaft portion 115 away from the first shaft portion 114 is a mounting end 113. A limiting member is detachably connected to the second shaft portion 115, and the second shaft portion 115 is detachably connected to the first shaft portion 114.

[0074] The mounting part 14 and the first shaft part 114 can be integrally formed; or the mounting part 14 and the first shaft part 114 can be separately set and connected, for example, the mounting part 14 and the first shaft part 114 can be connected by bolts.

[0075] In a projection plane perpendicular to the first direction Z, the orthographic projection of the mounting portion 14 extends beyond the orthographic projection of the first shaft portion 114, such that the mounting portion 14 protrudes from the outer peripheral surface of the first shaft portion 114. The entire mounting portion 14 may protrude from the outer peripheral surface of the first shaft portion 114; or only a portion of the mounting portion 14 may protrude from the outer peripheral surface of the first shaft portion 114.

[0076] The first shaft portion 114 and the second shaft portion 115 can be snap-fitted, sleeved, or fastened together. For example, as shown... Figures 4-6As shown, the fastener includes a first locking pin 116, a first shaft portion 114 and a second shaft portion 115 respectively provided with a first locking hole 1141 and a second locking hole 1151, and the locking pin passes through the first locking hole 1141 and the second locking hole 1151 to detachably connect the first shaft portion 114 and the second shaft portion 115.

[0077] The first shaft portion 114 is further away from the valve body 202 than the second shaft portion 115.

[0078] In this embodiment, by setting the first shaft 114 and the second shaft 115 to be detachably connected, on the one hand, the first shaft 114 or the second shaft 115 can be replaced when it is damaged, thereby improving the service life of the shaft body 11; on the other hand, the second shaft 115 can be replaced according to the model of the valve 20, thereby improving the compatibility of the first shaft 114 and further reducing the manufacturing cost of the valve detection device 10.

[0079] In some embodiments, the shaft body 11 includes a first shaft portion 114 and a second shaft portion 115, which are integrally formed.

[0080] In some embodiments, please refer to Figure 3 , Figure 6 and Figure 7 , Figure 7 Exploded views of a first adjustable bracket 3 and a second adjustable bracket 4 provided in some embodiments of this application. The second adjustable bracket 4 includes a second limiting member 41, which includes two limiting portions 4111 disposed opposite each other along a second direction X, the second direction X intersecting a first direction Z; the first adjustable bracket 3 includes a third limiting member 31, which is inserted between the two limiting portions 4111, the two limiting portions 4111 cooperating to restrict the third limiting member 31 from rotating about an axis extending along the first direction Z.

[0081] The two limiting portions 4111 are used to cooperate in limiting the position of the third limiting member 31 along the second direction X. The two limiting portions 4111 can be independent components. For example, the two limiting portions 2012 can be two limiting rods, which are arranged opposite each other along the second direction X and both of them extend along the third direction Y. The first direction Z, the second direction X, and the third direction Y are perpendicular to each other. The two limiting portions 4111 can also be two parts of the same component. For example, the second limiting member 41 has a limiting hole, and the limiting portions 4111 are two hole wall surfaces that are arranged opposite each other along the second direction X of the limiting hole.

[0082] The first direction Z and the second direction X can form an acute angle, a right angle, or an obtuse angle. For example, the first direction Z is perpendicular to the second direction X.

[0083] The third limiting member 31 is inserted between the two limiting parts 4111. The two limiting parts 4111 cooperate to restrict the rotation of the third limiting member 31 about an axis extending along the first direction Z, thereby restricting the rotation of the housing 21. The third limiting member 31 can move along the first direction Z, or it can remain stationary in the first direction Z.

[0084] In this embodiment, the two limiting parts 4111 can cooperate to restrict the rotation of the first adjustable bracket 3 around the axis extending along the first direction Z, which is beneficial for the detection part 22 to rotate relative to the housing 21 so as to realize the rotation angle detection of the valve stem 201 during the rotation. By limiting the position of the third limiting member 31 by the two limiting parts 4111, the position accuracy of the third limiting member 31 can be improved, thereby improving the detection accuracy of the valve detection device 10.

[0085] In some embodiments, please continue to refer to Figure 3 , Figure 6 and Figure 7 The first adjustable bracket 3 also includes a mounting base 32, which is detachably connected to the housing 21. The third limiting member 31 is adjustablely connected to the mounting base 32 along the third direction Y. The first direction Z, the second direction X, and the third direction Y are not coplanar and intersect each other.

[0086] The mounting base 32 can be snapped, plugged in, sleeved, or connected to the housing 21 using fasteners.

[0087] The third limiting member 31 can be sleeved, plugged into, or fastened to the mounting base 32. For example, the third limiting member 31 has a slotted hole extending in the third direction Y, the mounting base 32 has a through hole, and the first adjustable bracket 3 further includes a first locking member 33 and a locking cap 34. The first locking member 33 passes through the through hole and the slotted hole and engages with the locking cap 34 to lock the third limiting member 31 and the mounting base 32.

[0088] Any two of the first direction Z, the second direction X, and the third direction Y can form an acute angle, a right angle, or an obtuse angle. For example, the first direction Z, the second direction X, and the third direction Y are all perpendicular to each other.

[0089] By detachably connecting the mounting base 32 to the housing 21, the replacement of the mounting base 32 and the detection component 2 is facilitated, improving the compatibility of other parts. Thus, when dealing with different models of valve stems 201, the position of the third limiting member 31 along the third direction Y can be adjusted to assemble the detection component 2 and the shaft assembly 1, improving the compatibility of the valve detection device 10.

[0090] In some embodiments, please continue to refer to Figure 3 and Figure 7The second limiting member 41 is provided with a second limiting hole 411, and the two limiting parts 4111 are the two hole walls of the second limiting hole 411 arranged opposite to each other along the second direction X.

[0091] The second limiting hole 411 can be a polygonal hole, an irregularly shaped hole, etc. The second limiting hole 411 has two hole walls that are arranged opposite to each other along the second direction X, and the two hole walls are two limiting parts 4111.

[0092] In this embodiment, the second limiting hole 411 can limit the position of the third limiting member 31 along the second direction X, and the second limiting hole 411 can also limit the position of the third limiting member 31 along the third direction Y, reducing the risk of the third limiting member 31 disengaging from the two limiting parts 4111, making the assembly of the second adjustable bracket 4 and the first adjustable bracket 3 more stable.

[0093] In some embodiments, please continue to refer to Figure 3 and Figure 7 The second adjustable bracket 4 also includes a clamping assembly 42, which is connected to the second limiting member 41 and is used to clamp the valve body 202.

[0094] The clamping assembly 42 clamps the valve body 202 to limit the position of the second limiting member 41, thereby limiting the rotation of the first adjustable bracket 3 about an axis extending along the first direction Z. The clamping assembly 42 may be a clamp, gripper, etc.

[0095] The second adjustable bracket 4 is connected to the valve body 202 by clamping, which facilitates the assembly and disassembly of the second adjustable bracket 4 and the valve body 202 and reduces the difficulty of assembling and disassembling the second adjustable bracket 4 and the valve body 202.

[0096] In some embodiments, please continue to refer to Figure 3 and Figure 7 The clamping assembly 42 includes a first clamping member 421, a second clamping member 422, and an adjusting member 423; the first clamping member 421 and the second clamping member 422 are disposed opposite to each other, and the first clamping member 421 and the second clamping member 422 are used to clamp the valve body 202; the adjusting member 423 connects the first clamping member 421 and the second clamping member 422, and the adjusting member 423 is used to adjust the distance between the first clamping member 421 and the second clamping member 422.

[0097] The second limiting member 41 may be connected only to the first clamping member 421; it may also be connected only to the second clamping member 422; or it may be connected to both the first clamping member 421 and the second clamping assembly 42. The adjusting member 423 may be a clamp, locking pin, bolt, etc. There may be one or more adjusting members 423. In embodiments with multiple adjusting members 423, each adjusting member 423 is used to adjust the distance between the first clamping member 421 and the second clamping member 422.

[0098] For example, the second limiting member 41 is connected to the first clamping member 421. The first clamping member 421 is provided with a through hole, and the second clamping member 422 is provided with a second threaded hole. The adjusting member 423 is a bolt. The adjusting member 423 passes through the through hole and is threadedly engaged with the second threaded hole to adjust the distance between the first clamping member 421 and the second clamping member 422.

[0099] The first clamping member 421 and the second clamping member 422 are adjusted by the adjusting member 423. On the one hand, this allows the clamping assembly 42 to be applicable to different models of valves 20. When the models of valves 20 are different, the distance between the first clamping member 421 and the second clamping member 422 is adjusted so that the first clamping member 421 and the second clamping member 422 clamp the corresponding model of valve 20, thereby realizing the connection between the second adjustable bracket 4 and the valve 20. On the other hand, the clamping assembly 42 can also be adjusted to clamp different positions on the valve body 202, making the installation of the second adjustable bracket 4 more convenient.

[0100] This application provides a valve assembly 100, including a valve 20 and a valve detection device 10 provided in any of the above embodiments. The valve 20 includes a valve body 202 and a valve stem 201, the valve stem 201 being rotatably disposed on the valve body 202 along its own axis; a shaft assembly 1 is detachably connected to the valve stem 201, and a second adjustable bracket 4 is detachably connected to the valve body 202.

[0101] In some embodiments, the valve body 202 and the valve stem 201 are threaded together.

[0102] Please continue to refer to Figures 3-7This application provides a valve detection device 10, which includes a shaft assembly 1, a detection component 2, a first adjustable bracket 3, and a second adjustable bracket 4. The shaft assembly 1 includes a shaft body 11 and a first limiting member 12. The first limiting member 12 is detachably connected to the shaft body 11 and has a first limiting hole 121 for engaging with a valve stem 201 to circumferentially lock the shaft body 11 and the valve stem 201. The detection component 2 includes a housing 21 and a detection part 22. The detection part 22 is rotatably disposed on the housing 21 about an axis extending along a first direction Z and is detachably connected to the shaft assembly 1. The detection component 2 is configured to detect the rotation angle of the shaft assembly 1 when the detection part 22 rotates with the shaft assembly 1. The second adjustable bracket 4 includes a second limiting member 41, which includes two limiting parts 4111 disposed opposite to each other along a second direction X. The first adjustable bracket 3 includes a third limiting member 31 and a mounting base 32. The third limiting member 31 is inserted between two limiting parts 4111, and the two limiting parts 4111 cooperate to restrict the rotation of the third limiting member 31 about an axis extending along the first direction Z. The mounting base 32 is detachably connected to the housing 21, and the third limiting member 31 is adjustablely connected to the mounting base 32 along the third direction Y. The first direction Z, the second direction X, and the third direction Y are perpendicular to each other. The second adjustable bracket 4 also includes a clamping assembly 42, which is connected to the second limiting member 41 and is used to clamp the valve body 202.

[0103] By detachably connecting the first limiting member 12 to the shaft body 11, the service life of the shaft body 11 can be extended by replacing the first limiting member 12 if it is damaged. By providing a first limiting hole 121 on the first limiting member 12 for engaging with the valve stem 201, the first limiting block can achieve circumferential locking of the shaft body 11 and the valve stem 201, allowing the shaft body 11 to drive the valve 20 to rotate around an axis extending along the first direction Z. This enables the detection component 2 to detect the rotation angle of the valve stem 201. When dealing with different models of valve 20, only the model of the first limiting member 12 needs to be changed so that the first limiting hole 121 of the first limiting member 12 is adapted to the valve stem 201 of the corresponding model of valve 20. This makes the valve detection device 10 adaptable to the corresponding model of valve 20, improving the compatibility of the valve detection device 10 and reducing its manufacturing cost. The two limiting parts 4111 can cooperate to restrict the rotation of the first adjustable bracket 3 around the axis extending along the first direction Z, which is beneficial for the rotation of the detection part 22 relative to the housing 21, so as to realize the rotation angle detection of the valve stem 201 during the rotation. By limiting the position of the third limiting member 31 by the two limiting parts 4111, the positional accuracy of the third limiting member 31 can be improved, thereby improving the detection accuracy of the valve detection device 10. When dealing with different models of valve stem 201, the position of the third limiting member 31 along the third direction Y can be adjusted to realize the assembly of the detection component 2 and the shaft component 1, improving the compatibility of the valve detection device 10.

[0104] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0105] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A valve detection device (10), wherein the valve (20) comprises a valve body (202) and a valve stem (201), the valve stem (201) being rotatably disposed on the valve body (202) along its own axis, characterized in that, include: A shaft assembly (1) for detachably connecting to the valve stem (201); The detection assembly (2) includes a housing (21) and a detection part (22), the detection part (22) being rotatably disposed on the housing (21) about an axis extending along a first direction (Z), the detection part (22) being detachably connected to the shaft assembly (1), and the detection assembly (2) being configured to detect the rotation angle of the shaft assembly (1) when the detection part (22) rotates with the shaft assembly (1); A first adjustable bracket (3) is detachably connected to the housing (21); A second adjustable bracket (4) is detachably connected to the valve body (202). The second adjustable bracket (4) is configured to restrict the first adjustable bracket (3) from rotating about an axis extending along the first direction (Z) and to allow the first adjustable bracket (3) to move relative to the second adjustable bracket (4) along the first direction (Z).

2. The valve detection device (10) as described in claim 1, characterized in that, The shaft assembly (1) includes: A shaft body (11) extends along the first direction (Z), and the detection part (22) is detachably connected to the shaft body (11); The first limiting member (12) is detachably connected to the shaft body (11). The first limiting member (12) is provided with a first limiting hole (121). The first limiting hole (121) is used to cooperate with the valve stem (201) to circumferentially lock the shaft body (11) and the valve stem (201).

3. The valve detection device (10) as described in claim 2, characterized in that, The first limiting member (12) includes a first part (122), which is located at one end of the shaft body (11) along the first direction (Z). The first limiting hole (121) is disposed in the first part (122). The shaft body (11) is provided with a first threaded hole (112) at one end near the first part (122). The first threaded hole (112) is used to thread with the valve stem (201).

4. The valve detection device (10) as described in claim 2, characterized in that, The shaft assembly (1) further includes a first locking member (13) configured to unlockably lock the first limiting member (12) and the shaft body (11).

5. The valve detection device (10) as described in claim 4, characterized in that, The first limiting member (12) includes: The first part (122) is located at one end of the shaft body (11) along the first direction (Z), and the first limiting hole (121) is disposed in the first part (122); The second part (123) is connected to the first part (122) and is disposed facing the outer peripheral surface of the shaft body (11). The first locking member (13) is configured to lock the second part (123) and the shaft body (11) in an unlockable manner.

6. The valve detection device (10) as described in claim 2, characterized in that, The shaft body (11) has a mounting end (113) along the first direction (Z) for mounting to the valve stem (201); The detection part (22) is sleeved on the shaft body (11), and the shaft body (11) is provided with a mounting part (14). Along the first direction (Z), the mounting part (14) is located on the side of the shaft body (11) away from the mounting end (113) and is detachably connected to the detection part (22).

7. The valve detection device (10) as described in claim 6, characterized in that, The shaft body (11) includes: The first shaft portion (114) has the mounting portion (14) disposed on the first shaft portion (114) and protruding from the outer peripheral surface of the first shaft portion (114); The second shaft portion (115) is connected to the first shaft portion (114). The end of the second shaft portion (115) away from the first shaft portion (114) is the mounting end (113). The limiting member is detachably connected to the second shaft portion (115). The second shaft portion (115) is detachably connected to the first shaft portion (114).

8. The valve detection device (10) as described in any one of claims 1-7, characterized in that, The second adjustable bracket (4) includes a second limiting member (41), which includes two limiting portions (4111) arranged opposite to each other along a second direction (X), and the second direction (X) intersects with the first direction (Z). The first adjustable bracket (3) includes a third limiting member (31), which is inserted between two limiting parts (4111). The two limiting parts (4111) are used to cooperate in restricting the third limiting member (31) from rotating about an axis extending along the first direction (Z).

9. The valve detection device (10) as described in claim 8, characterized in that, The first adjustable bracket (3) further includes a mounting base (32), which is detachably connected to the housing (21). The third limiting member (31) is adjustablely connected to the mounting base (32) along a third direction (Y). The first direction (Z), the second direction (X), and the third direction (Y) are not coplanar and intersect each other.

10. The valve detection device (10) as described in claim 8, characterized in that, The second limiting member (41) is provided with a second limiting hole (411), and the two limiting parts (4111) are two hole walls that are arranged opposite to each other in the second direction (X) of the second limiting hole (411).

11. The valve detection device (10) as described in claim 8, characterized in that, The second adjustable bracket (4) further includes a clamping assembly (42), which is connected to the second limiting member (41) and is used to clamp the valve body (202).

12. The valve detection device (10) as described in claim 11, characterized in that, The clamping assembly (42) includes: A first clamping member (421) and a second clamping member (422) are arranged opposite to each other, and the first clamping member (421) and the second clamping member (422) are used to cooperate in clamping the valve body (202); An adjusting member (423) connects the first clamping member (421) and the second clamping member (422), and the adjusting member (423) is used to adjust the distance between the first clamping member (421) and the second clamping member (422).

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