Swing valve

Abstract

According to the swing valve, the buffer part is arranged on the valve plate, and the buffer part is arranged at the position, making contact with the valve body firstly in the process that the valve plate moves towards the closing position, of the valve plate, so that when the valve plate moves from the opening position to the closing position and is about to make contact with the valve body, the buffer part makes contact with the valve body firstly; therefore, the contact sequence and the contact mode between the valve plate and the valve body are changed, the speed reduction process of the valve plate in the closing process is smoother, impact force generated at the moment when the valve plate makes contact with the valve body is reduced, vibration and noise generated in the valve operation process are reduced, impact loads borne by the valve plate and the valve body in the frequent opening and closing process are relieved, and the service life of the valve plate is prolonged. Therefore, the stability and reliability of valve operation are improved.

Description

Technical Field

[0001] This application relates to the field of valve technology, and more particularly to a swing valve. Background Technology

[0002] As a key component in fluid control systems, swing valves are widely used in industrial pipelines, water supply and drainage systems, and various equipment to achieve the on / off switching or flow regulation of media. In existing technology, swing valves typically include a valve body and a valve plate or valve core that cooperates with the valve body. The valve plate moves relative to the valve body under the action of a drive mechanism to achieve the switching between open and closed states.

[0003] During the transition of a swing valve from the open to the closed state, contact usually occurs between the valve plate and the valve body. Due to factors such as the valve plate's movement speed, medium pressure, and structural rigidity, the valve plate can generate significant impact force upon contact with the valve body, leading to vibration and increased noise during operation. Long-term, repeated impacts can also accelerate the wear of components such as the valve plate and valve body, affecting the valve's sealing performance and service life.

[0004] Furthermore, in some applications, swing valves require frequent opening and closing, placing higher demands on the stability and reliability of valve operation due to the contact state between the valve plate and the valve body. How to reduce the adverse effects of contact between the valve plate and the valve body while ensuring the normal opening and closing function of the swing valve remains a problem that requires further improvement in existing technologies. Utility Model Content

[0005] The technical problem to be solved by this application is to provide a swing valve to solve the problem in the prior art that when the valve plate swings from the open position to the closed position, the valve plate and the valve body are prone to direct hard collision, which generates a large impact force, resulting in wear of the sealing surface, increased vibration and noise, and reduced valve service life.

[0006] This application provides a swing valve, including a valve body and a valve plate. The valve plate is rotatably connected to the valve body, and the valve plate swings around a swing axis between a closed position and an open position under the action of a drive mechanism. A buffer is provided on the valve plate, and the buffer is located at the part of the valve plate that first contacts the valve body when the valve plate moves to the closed position.

[0007] By adopting the above technical solution, a buffer element is provided on the valve plate and positioned at the part of the valve plate that first contacts the valve body during its movement towards the closed position. This allows the buffer element to contact the valve body first as the valve plate moves from the open position to the closed position and is about to contact the valve body, thereby changing the contact sequence and form between the valve plate and the valve body. Compared to the rigid structure of the valve plate directly contacting the valve body, this structure makes the deceleration process of the valve plate during closing smoother, helping to reduce the impact force generated at the moment of contact between the valve plate and the valve body, reducing vibration and noise generated during valve operation, and mitigating the impact load on the valve plate and valve body during frequent opening and closing, thereby improving the stability and reliability of valve operation.

[0008] Optionally, the buffer is disposed on the circumferential sidewall of the valve plate.

[0009] By adopting the above technical solution, since the buffer is set on the side wall of the valve plate in the circumferential direction, the buffer is located in the main area where the valve plate contacts the valve body during the valve plate closing process. Thus, without changing the original rotation mode of the valve plate, the buffer can effectively participate in the contact process between the valve plate and the valve body, which helps to buffer the valve plate closing process while ensuring the normal opening and closing function of the valve.

[0010] Optionally, there may be multiple buffer elements, which are spaced apart along the circumferential sidewall of the valve plate.

[0011] By adopting the above technical solution, by setting multiple buffers and distributing them at intervals along the circumferential sidewall of the valve plate, the valve plate can contact the valve body sequentially or simultaneously through the buffers at multiple positions during the closing process. This changes the contact force between the valve plate and the valve body from a single point or local concentration to a multi-point distribution, which helps to reduce the phenomenon of local force concentration and further improves the smoothness of the valve plate closing process.

[0012] Optionally, the valve plate has an open mounting groove, a portion of the buffer is embedded in the mounting groove, and another portion extends from the open groove to the outside of the mounting groove.

[0013] By adopting the above technical solution, by forming an open mounting groove on the valve plate, and embedding part of the buffer component into the mounting groove while the other part extends from the open groove to the outside of the mounting groove, the mounting position of the buffer component on the valve plate is effectively limited and fixed. This helps to ensure that the buffer component stably participates in the contact process between the valve plate and the valve body during the valve plate closing process, and avoids the buffer component from falling off or shifting its position during use.

[0014] Optionally, the shape of the opening is adapted to the contour shape of the buffer.

[0015] By adopting the above technical solution, since the shape of the mounting groove opening is compatible with the outline shape of the buffer, the buffer can form a relatively close fit with the mounting groove, thereby improving the installation stability of the buffer in the mounting groove and helping to maintain a stable relative positional relationship between the buffer and the valve plate during repeated opening and closing of the valve.

[0016] Optionally, when the valve plate is in the closed position, the top of the portion of the buffer extending to the outside of the mounting groove is coplanar with the circumferential sidewall of the valve plate where the opening is located.

[0017] By adopting the above technical solution, when the valve plate is in the closed position, the buffer extends to the top of the outer part of the mounting groove and is coplanar with the circumferential side wall of the valve plate, so that when the valve plate is in the fully closed state, the circumferential side wall of the valve plate fits against the side wall of the valve body, thereby ensuring the sealing performance of the valve plate.

[0018] Optionally, along the circumference of the valve plate, the length of the mounting groove is greater than the length of the buffer member, so as to form a space for the buffer member to move into the mounting groove.

[0019] By adopting the above technical solution, by making the length of the mounting groove along the circumferential direction of the valve plate greater than the length of the buffer, a space is formed in the mounting groove for the buffer to move into the mounting groove. This allows the buffer to have a certain displacement margin when the valve plate is closed and in contact with the valve body, which helps the buffer to undergo relative displacement under force, thereby prolonging the deceleration process of the valve plate and reducing the instantaneous impact when the valve plate contacts the valve body.

[0020] Optionally, when the valve plate moves to the closed position and comes into contact with the valve body, the buffer member is displaced into the mounting groove along the extension direction of the mounting groove under the action of the valve body.

[0021] By adopting the above technical solution, when the buffer moves the valve plate to the closed position and comes into contact with the valve body, it can be displaced into the mounting groove along the extension direction of the mounting groove under the action of the valve body. This allows the valve plate to gradually reduce its movement speed within a short stroke during the closing process, which helps to further weaken the impact between the valve plate and the valve body and improve the smoothness of the valve plate closing process.

[0022] Optionally, the buffer and the mounting slot are detachably connected.

[0023] By adopting the above technical solution, the buffer component and the mounting groove are made detachably connected, so that the buffer component can be disassembled and replaced separately after wear or damage, without having to replace the entire valve plate. This helps to reduce the maintenance cost of the valve and improve the economy and reliability of the valve during long-term use.

[0024] Optionally, the valve body is provided with a mating part corresponding to the buffer member. The mating part contacts the buffer member when the valve plate moves to the closed position, so as to restrict the valve plate from continuing to move to the closed position.

[0025] By adopting the above technical solution, since the valve body is provided with a mating part corresponding to the buffer, the buffer can contact the mating part when the valve plate moves to the closed position, thereby restricting the valve plate from continuing to move to the closed position. This helps to limit the closing stroke of the valve plate and makes the force path of the valve plate during the closing process clearer, thereby improving the controllability and stability of the valve operation process.

[0026] The beneficial effects of this application are as follows: Compared with the prior art, the swing valve provided in this application has a buffer component on the valve plate, and the buffer component is located at the part that first contacts the valve body when the valve plate moves to the closed position. This allows the buffer component to contact the valve body first when the valve plate moves from the open position to the closed position and is about to contact the valve body. This changes the contact sequence and contact form between the valve plate and the valve body, making the deceleration process of the valve plate during the closing process smoother. This helps to reduce the impact force generated at the moment of contact between the valve plate and the valve body, reduce the vibration and noise generated during valve operation, and reduce the impact load on the valve plate and valve body during frequent opening and closing, thereby improving the stability and reliability of valve operation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the swing valve provided in this application;

[0028] Figure 2 This is a schematic diagram of the valve plate provided in this application;

[0029] Figure 3 This is a schematic diagram of the valve plate provided in another embodiment of this application;

[0030] Figure 4 A schematic diagram of the structure of the buffer provided in this application;

[0031] Figure 5 A schematic diagram of the structure when the buffer provided in this application comes into contact with the mating part;

[0032] Figure 6 This is a schematic diagram of the structure of a buffer provided in another embodiment of this application;

[0033] Figure 7 for Figure 6 A schematic diagram of the structure when the buffer component and the mating part come into contact.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. Valve body; 11. Mating part; 20. Valve plate; 21. Mounting groove; 30. Drive mechanism; 31. Drive motor; 32. Reducer; 40. Buffer component. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this application pertains. The terms "comprising" and similar expressions used herein mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but does not exclude other elements or objects. Unless otherwise specified, the term "connection" as used herein can refer to a direct connection or an indirect connection, i.e., a connection through an intermediate object.

[0037] Furthermore, it should be understood that the orientations or positional relationships indicated by terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" in this document are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. The terms "first" and "second" in this document are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0038] To address the problems existing in the prior art, embodiments of this application provide a swing valve. Please refer to [link / reference]. Figure 1 and Figure 2 It includes a valve body 10 and a valve plate 20. The valve plate 20 is rotatably connected to the valve body 10, and the valve plate 20 swings around the swing axis between the closed position and the open position under the action of the drive mechanism 30. A buffer 40 is provided on the valve plate 20. The buffer 40 is located at the part of the valve plate 20 that first contacts the valve body 10 when it moves to the closed position.

[0039] Compared with the prior art, the swing valve provided in this application has a buffer 40 on the valve plate 20, and the buffer 40 is positioned at the part where the valve plate 20 first contacts the valve body 10 during its movement towards the closed position. This allows the buffer 40 to contact the valve body 10 first when the valve plate 20 is moving from the open position to the closed position and is about to contact the valve body 10. This changes the contact sequence and contact form between the valve plate 20 and the valve body 10, making the deceleration process of the valve plate 20 during the closing process smoother. This helps to reduce the impact force generated at the moment of contact between the valve plate 20 and the valve body 10, reduce the vibration and noise generated during valve operation, and reduce the impact load on the valve plate 20 and the valve body 10 during frequent opening and closing, thereby improving the stability and reliability of valve operation.

[0040] In this application, please refer to Figure 1 The drive mechanism 30 includes a drive motor 31, a reducer 32 connected to the drive motor 31, and a swing shaft connected to the output end of the reducer 32. The swing shaft is arranged along the swing center axis of the valve plate 20, and the valve plate 20 is fixedly mounted on the swing shaft so that the valve plate 20 rotates synchronously with the swing shaft. When the drive motor 31 is energized, the rotational motion output by the drive motor 31 is reduced and amplified by the reducer 32 and then transmitted to the swing shaft, thereby driving the swing shaft to rotate around its own axis, and thus causing the valve plate 20 to swing between the open and closed positions around the swing shaft. When the drive motor 31 runs in the reverse direction, the swing shaft rotates in the reverse direction, and the valve plate 20 swings from the closed position to the open position to realize the opening and closing control of the valve plate 20. The above specific implementation method is a conventional technical means in this field.

[0041] In one embodiment of this application, please refer to Figure 2 The buffer element 40 is disposed on the circumferential side wall of the valve plate 20.

[0042] Specifically, by setting the buffer 40 on the circumferential side wall of the valve plate 20, the buffer 40 is located in the main area where the valve plate 20 contacts the valve body 10 during the closing process. Without changing the original rotation mode of the valve plate 20, the buffer 40 can effectively participate in the contact process between the valve plate 20 and the valve body 10, which helps to buffer the closing process of the valve plate 20 while ensuring the normal opening and closing function of the valve plate 20.

[0043] In one embodiment of this application, please refer to Figure 2 There are multiple buffer elements 40, which are distributed at intervals along the circumferential sidewall of the valve plate 20.

[0044] Specifically, multiple buffers 40 are disposed on the side of the valve plate 20 that first contacts the valve body 10 when the valve plate 20 is in the closed position. By distributing multiple buffers 40 at intervals along the circumferential sidewall of the valve plate 20, the valve plate 20 can contact the valve body 10 sequentially or simultaneously through the buffers 40 at multiple positions during the closing process. This transforms the contact force between the valve plate 20 and the valve body 10 from a single point or local concentration to a multi-point distribution, which helps to reduce the phenomenon of local force concentration and further improves the smoothness of the valve plate 20 closing process.

[0045] Preferably, in this application, there are two buffer elements 40, which are distributed at intervals along the circumferential sidewall of the valve plate 20.

[0046] In another embodiment of this application, please refer to Figure 3 Multiple buffer components 40 are partially disposed on the side of the valve plate 20 that first contacts the valve body 10 when the valve plate 20 is in the closed position, and another part is disposed on the side of the valve plate 20 that first contacts the valve body 10 when the valve plate 20 is in the open position, thereby buffering the valve plate 20 during the closing and opening processes.

[0047] Preferably, in this application, the number of buffer members 40 is four, with two buffer members 40 disposed on the side of the valve plate 20 that first contacts the valve body 10 when the valve plate 20 is in the closed position and spaced apart along the circumferential sidewall of the valve plate 20. The other two buffer members 40 are disposed on the side of the valve plate 20 that first contacts the valve body 10 when the valve plate 20 is in the open position and spaced apart along the circumferential sidewall of the valve plate 20.

[0048] In one embodiment of this application, please refer to Figure 4 A mounting groove 21 with an opening is formed on the valve plate 20. A portion of the buffer 40 is embedded in the mounting groove 21, and another portion extends from the opening to the outside of the mounting groove 21.

[0049] Specifically, by forming an open mounting groove 21 on the valve plate 20, and embedding a portion of the buffer 40 into the mounting groove 21 while extending the other portion from the open groove 21 to the outside of the mounting groove 21, the mounting position of the buffer 40 on the valve plate 20 is effectively limited and fixed. This helps to ensure that the buffer 40 stably participates in the contact process between the valve plate 20 and the valve body 10 during the valve plate 20 closing process, and prevents the buffer 40 from falling off or shifting position during use.

[0050] In one embodiment of this application, please refer to Figure 4 The shape of the opening is adapted to the contour shape of the buffer 40.

[0051] Specifically, the shape of the opening of the mounting groove 21 is adapted to the cross-sectional shape of the buffer member 40, allowing the buffer member 40 to form a relatively close fit with the mounting groove 21. This improves the installation stability of the buffer member 40 within the mounting groove 21 and helps maintain a stable relative position between the buffer member 40 and the valve plate 20 during repeated opening and closing of the valve. The buffer member 40 has a spherical structure. A portion of the buffer member 40 is housed within the mounting groove 21 formed on the valve plate 20, while the other portion extends outward through the opening of the mounting groove 21. This allows the buffer member 40 to contact the valve body 10 with its spherical surface when the valve plate 20 moves to the closed position and contacts the valve body 10.

[0052] In one embodiment of this application, please refer to Figure 5 When the valve plate 20 is in the closed position, the top of the portion of the buffer 40 extending to the outside of the mounting groove 21 is coplanar with the circumferential sidewall of the valve plate 20 where the opening is located.

[0053] Specifically, when the valve plate 20 is in the closed position, the buffer 40 abuts against the valve body 10, causing the buffer 40 to undergo elastic deformation. This causes the buffer 40 to extend to the top of the outer part of the mounting groove 21 and become coplanar with the circumferential sidewall of the valve plate 20. As a result, when the valve plate 20 is in the fully closed state, the circumferential sidewall of the valve plate 20 fits against the sidewall of the valve body 10, thereby ensuring the sealing performance of the valve plate 20.

[0054] In one embodiment of this application, please refer to Figure 6 Along the circumference of the valve plate 20, the length of the mounting groove 21 is greater than the length of the buffer 40, so as to form a space for the buffer 40 to move into the mounting groove 21.

[0055] Specifically, by making the length of the mounting groove 21 along the circumferential direction of the valve plate 20 greater than the length of the buffer 40, a space is formed in the mounting groove 21 for the buffer 40 to move into the mounting groove 21. This allows the buffer 40 to have a certain displacement margin when the valve plate 20 is closed and in contact with the valve body 10. This helps the buffer 40 to undergo relative displacement under force, thereby prolonging the deceleration process of the valve plate 20 and reducing the instantaneous impact when the valve plate 20 contacts the valve body 10. Furthermore, the two side walls of the mounting groove 21 extending circumferentially along the valve plate 20 abut against the side walls of the buffer 40 to fix the buffer 40 in the mounting groove 21.

[0056] In one embodiment of this application, please refer to Figure 6 and Figure 7 When the valve plate 20 moves to the closed position and comes into contact with the valve body 10, the buffer 40 is displaced into the mounting groove 21 along the extension direction of the mounting groove 21 under the action of the valve body 10.

[0057] Specifically, when the buffer 40 moves to the closed position and comes into contact with the valve body 10, it can be displaced into the mounting groove 21 along the extension direction of the mounting groove 21 under the action of the valve body 10. This allows the valve plate 20 to gradually reduce its speed within a short stroke during the closing process, which helps to further weaken the impact between the valve plate 20 and the valve body 10 and improve the smoothness of the valve plate 20 closing process.

[0058] In this application, the buffer 40 is made of a material with certain elasticity and low friction characteristics, such as polytetrafluoroethylene (PTFE). This allows the buffer 40 to undergo controlled displacement under the constraint of the mounting groove 21 when it contacts the valve body 10 and is subjected to force. Simultaneously, it reduces the frictional resistance between the buffer 40 and the sidewall of the mounting groove 21 during displacement, thereby facilitating the stable participation of the buffer 40 in the contact process during valve plate 20 closure. In other embodiments, the buffer 40 may also be made of engineering plastics or composite materials with similar mechanical properties and friction characteristics.

[0059] In one embodiment of this application, the buffer 40 and the mounting groove 21 are detachably connected.

[0060] Specifically, by making the buffer 40 and the mounting groove 21 detachably connected, the buffer 40 can be disassembled and replaced separately after wear or damage, without having to replace the entire valve plate 20. This helps to reduce the maintenance cost of the valve and improve the economy and reliability of the valve during long-term use.

[0061] In one embodiment of this application, please refer to Figure 7 and Figure 5 The valve body 10 is provided with a mating part 11 corresponding to the buffer member 40. When the valve plate 20 moves to the closed position, the mating part 11 contacts the buffer member 40 to limit the valve plate 20 from continuing to move to the closed position.

[0062] Specifically, since the valve body 10 is provided with a mating part 11 corresponding to the buffer member 40, the buffer member 40 can contact the mating part 11 when the valve plate 20 moves to the closed position, thereby restricting the valve plate 20 from continuing to move to the closed position. This helps to limit the closing stroke of the valve plate 20 and makes the force path of the valve plate 20 during the closing process clearer, thereby improving the controllability and stability of the valve operation process.

[0063] The above are merely specific embodiments of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the scope of the claims.

Claims

1. A swing valve, comprising a valve body and a valve plate, wherein the valve plate is rotatably connected to the valve body, and the valve plate swings between a closed position and an open position about a swing axis under the action of a driving mechanism, characterized in that, A buffer is provided on the valve plate, and the buffer is located at the part of the valve plate that first contacts the valve body when the valve plate moves to the closed position.

2. The swing valve according to claim 1, characterized in that, The buffer element is disposed on the circumferential sidewall of the valve plate.

3. The swing valve according to claim 2, characterized in that, The number of buffer elements is multiple, and the multiple buffer elements are distributed at intervals along the circumferential sidewall of the valve plate.

4. The swing valve according to claim 3, characterized in that, The valve plate has an open mounting groove, a portion of which is embedded in the mounting groove, and another portion extends from the open groove to the outside of the mounting groove.

5. The swing valve according to claim 4, characterized in that, The shape of the opening is adapted to the contour shape of the buffer.

6. The swing valve according to claim 4, characterized in that, When the valve plate is in the closed position, the top of the portion of the buffer extending to the outside of the mounting groove is coplanar with the circumferential sidewall of the valve plate where the opening is located.

7. The swing valve according to claim 4, characterized in that, Along the circumference of the valve plate, the length of the mounting groove is greater than the length of the buffer member, so as to form a space for the buffer member to move into the mounting groove.

8. The swing valve according to claim 7, characterized in that, When the valve plate moves to the closed position and comes into contact with the valve body, the buffer element is displaced into the mounting groove along the extension direction of the mounting groove under the action of the valve body.

9. The swing valve according to claim 4, characterized in that, The buffer component is detachably connected to the mounting slot.

10. The swing valve according to any one of claims 1-9, characterized in that, The valve body is provided with a mating part corresponding to the buffer member. The mating part contacts the buffer member when the valve plate moves to the closed position, so as to restrict the valve plate from continuing to move to the closed position.

Images