Variable diameter pneumatic wear resistant swing valve

Abstract

The utility model relates to pneumatic valve technical field, concretely is a kind of variable-diameter pneumatic wear swing valve, including shell, the top end of the shell is rotatably connected with air pump assembly, the output end of air pump assembly is rotatably connected with connecting rod, the bottom end of connecting rod is provided with threaded rod, the outside of threaded rod is provided with straight bevel gear one, this variable-diameter pneumatic wear swing valve, connecting rod is driven to rotate by air pump assembly, and further drive threaded rod rotation makes straight bevel gear one synchronous rotation, straight bevel gear one drives straight bevel gear two again to drive support block rotation, support block simultaneously drives valve flap to complete opening and closing movement;When straight bevel gear one moves to specific degree, straight bevel gear two will compress spring to limit and stop rotation, to effectively avoid the rotating deviation of connecting rod due to the greater output power of air pump assembly or long time abrasion, prevent valve flap from serious abrasion due to large-angle rotation, reduce equipment loss.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic valve technology, specifically a variable diameter pneumatic wear-resistant swing valve. Background Technology

[0002] There are many types of valves, and their structures and solutions vary depending on the working environment and the medium being transported. Even valves with similar functions have different structural features. Swing valves are used in industries such as thermal power plants, metallurgy, pharmaceuticals, and chemicals to transport various dust, particles, and semi-fluid media.

[0003] A search revealed a Chinese patent (CN205090009U) that includes a switch element disposed on the inner wall of a valve body. The valve seat has a water outlet hole, and the inner wall of the valve body has a mounting groove for the switch element. One end of the switch element is embedded in the mounting groove, and the other end extends out of the groove. The switch element can slide back and forth within the mounting groove. An elastic element is provided between the switch element and the mounting groove, which can drive the switch element to move outwards from the mounting groove. The inner wall of the mounting groove has several buffer strips. When the valve is closed, a swing arm can drive the valve disc to move towards the valve seat and form a sealing surface with the valve seat. The valve disc can rotate on the swing arm, and when the valve disc rotates, it can squeeze the switch element on the valve body, causing the switch element to move towards the mounting groove and open the valve. The water outlet hole on the valve seat can then discharge water towards the valve disc. This design includes a built-in function to clean impurities between the valve disc and the valve seat, resulting in better valve sealing performance.

[0004] The aforementioned patent proposes that the inner wall of the mounting groove is equipped with several buffer strips. When the valve is closed, the swing arm can drive the valve disc to move toward the valve seat and form a sealing surface with the valve seat. The valve disc can rotate on the swing arm. When the valve disc rotates, it can squeeze the switching element on the valve body. The switching element moves toward the mounting groove and opens the switch. The water outlet on the valve seat faces the valve disc to discharge water. However, this structure wears out significantly during long-term operation, and the valve disc is prone to displacement, resulting in a significant reduction in sealing performance. At the same time, when the valve drains water, it is difficult to prevent water backflow, which may affect the stable operation of the overall equipment. Therefore, we propose a variable diameter pneumatic wear-resistant swing valve. Utility Model Content

[0005] One of the technical problems this application aims to solve is that the above-mentioned structure experiences significant wear during long-term operation, and the valve disc is prone to displacement, resulting in a significant reduction in sealing performance. At the same time, when the valve drains water, it is difficult to prevent backflow, which may affect the stable operation of the overall equipment.

[0006] To solve the above technical problems, this application provides a variable diameter pneumatic wear-resistant swing valve, including a housing, an air pump assembly rotatably connected to the top of the housing, a connecting rod rotatably connected to the output end of the air pump assembly, a threaded rod at the bottom end of the connecting rod, and a straight bevel gear on the outer side of the threaded rod.

[0007] In some embodiments, a limiting ring is sleeved on the outer side of the threaded rod, a slider is provided on the inner wall of the limiting ring, a limiting sleeve is provided on the outer side of the limiting ring, a support block is provided inside the housing, a spring is sleeved on the outer side of the support block, and a straight bevel gear is provided on the outer side of the support block.

[0008] In some embodiments, a valve disc is provided at the bottom end of the support block, an inlet is provided at the top end of the housing, a water outlet assembly is provided inside the housing, a limit block is slidably connected inside the water outlet assembly, a bracket is slidably connected inside the water outlet assembly, an elastic telescopic rod is provided at the rear side of the bracket, and a locking block is provided at the rear side of the elastic telescopic rod.

[0009] In some embodiments, the slider is slidably connected to the outside of the threaded rod, and the limiting sleeve is sleeved on the outside of the support block.

[0010] In some embodiments, the top of the valve disc abuts against the inner wall of the inlet, and the locking block engages with the inner wall of the water outlet assembly.

[0011] In some embodiments, the second bevel gear and the first bevel gear are meshed together.

[0012] In some embodiments, one end of the spring is disposed on the outside of the support block, and the other end of the spring is disposed on the bottom end of the second bevel gear.

[0013] This utility model has at least the following beneficial effects: 1. The air pump assembly drives the connecting rod to rotate, which in turn drives the threaded rod to rotate, causing the first straight bevel gear to rotate synchronously. The first straight bevel gear then drives the second straight bevel gear to rotate, which in turn drives the support block to rotate. The support block simultaneously drives the valve disc to complete the opening and closing motion. When the first straight bevel gear moves to a certain extent, the second straight bevel gear will compress the spring to its limit and stop rotating. This effectively avoids the deviation of the connecting rod rotation caused by the large output power of the air pump assembly or long-term wear, prevents the valve disc from suffering severe wear due to large-angle rotation, reduces equipment wear, and significantly improves the working stability of the equipment.

[0014] 2. The bracket and limit block inside the water outlet component work together to allow water to flow out through the bracket during normal water outlet and to lock inside the water outlet component when backflow occurs. This effectively intercepts backflow water, avoids equipment damage and production accidents caused by water backflow, and significantly improves the reliability of equipment operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the support block structure of this utility model; Figure 3 This is a schematic diagram of the limiting ring structure of this utility model; Figure 4 This is a schematic diagram of the air pump assembly structure of this utility model; Figure 5 This is a schematic diagram of the water outlet component of this utility model.

[0016] In the diagram: 1. Housing; 2. Air pump assembly; 3. Connecting rod; 4. Threaded rod; 5. First bevel gear; 6. Limiting ring; 7. Slider; 8. Limiting sleeve; 9. Support block; 10. Spring; 11. Second bevel gear; 12. Valve disc; 13. Inlet; 14. Water outlet assembly; 15. Limiting block; 16. Bracket; 17. Elastic telescopic rod; 18. Locking block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: Please refer to Figures 1-3 This utility model provides a technical solution: A variable-diameter pneumatic wear-resistant swing valve includes a housing 1, which serves as the mounting base for the entire swing valve, providing stable installation space and protection for all internal components and ensuring a basic environment for coordinated operation. An air pump assembly 2 is rotatably connected to the top of the housing 1. The air pump assembly 2 is the power input source for the swing valve, providing power to subsequent transmission components through its own rotation, and is the core power component for realizing the opening and closing action of the valve disc. A connecting rod 3 is rotatably connected to the output end of the air pump assembly 2, which performs the power transmission function, precisely transmitting the rotational power of the air pump assembly 2. The power is transmitted to the threaded rod 4 to ensure smooth power transmission from the power source to the actuator. The bottom end of the connecting rod 3 is provided with a threaded rod 4. The threaded rod 4 drives the outer straight bevel gear 5 to rotate synchronously by rotation, and at the same time provides a sliding fit foundation for the slider 7. It is a key transmission component in the power transmission chain. The outer side of the threaded rod 4 is provided with a straight bevel gear 5. The straight bevel gear 5, through meshing with the straight bevel gear 11, converts the rotational power of the threaded rod 4 into the rotational power of the support block 9, realizing the change of power transmission direction and providing transmission guarantee for the opening and closing of the valve disc 12.

[0019] Example 2: Please refer to Figures 3-5 This utility model provides a technical solution: A limiting ring 6 is fitted on the outer side of the threaded rod 4. The limiting ring 6 restricts the movement range of the threaded rod 4 and provides a mounting carrier for the slider 7, preventing radial displacement when the threaded rod 4 rotates and ensuring transmission stability. A slider 7 is mounted on the inner wall of the limiting ring 6. The slider 7 is slidably connected to the outer side of the threaded rod 4 and can move axially with the rotation of the threaded rod 4, simultaneously driving the limiting ring 6 to move synchronously, thus assisting in limiting and coordinating transmission. A limiting sleeve 8 is provided on the outer side of the limiting ring 6. The limiting sleeve 8 is fitted on the outer side of the support block 9, limiting the rotation and movement range of the support block 9 and preventing radial displacement when the support block 9 moves. The support block 9 stably drives the valve disc 12 to move; the support block 9 is provided inside the housing 1. The support block 9 serves as the mounting support component for the valve disc 12. It directly drives the valve disc 12 to open and close by rotating on its own. At the same time, it provides mounting support for the spring 10 and the second straight bevel gear 11. It is the key carrier connecting the transmission component and the execution component. The spring 10 is sleeved on the outside of the support block 9. The spring 10 can generate elastic deformation when the second straight bevel gear 11 rotates. When the first straight bevel gear 5 moves to a certain extent, the spring 10 is compressed to the limit, thereby limiting the second straight bevel gear 11 from continuing to rotate and avoiding serious wear caused by large-angle rotation of the valve disc 12.

[0020] A second bevel gear 11 is provided on the outer side of the support block 9. The second bevel gear 11 meshes with the first bevel gear 5 to receive power and drive the support block 9 to rotate. At the same time, with the cooperation of the spring 10, overload protection is achieved to prevent transmission deviation caused by excessive output power of the air pump assembly 2 or wear of components. The slider 7 is slidably connected to the outer side of the threaded rod 4. This connection method ensures that the slider 7 can slide flexibly along the axial direction as the threaded rod 4 rotates, ensuring the motion matching accuracy between the limit ring 6 and the threaded rod 4 and avoiding jamming. The limit sleeve 8 is sleeved on the outer side of the support block 9. This structure further strengthens the support block 9. The limiting effect ensures that the support block 9 maintains a stable movement trajectory when driving the valve disc 12 to open and close, improving the accuracy of the valve disc's action; the second straight bevel gear 11 and the first straight bevel gear 5 are meshed, which enables efficient power transmission, ensures a stable transmission ratio, and provides a basis for precise control of the opening and closing angle of the valve disc 12; one end of the spring 10 is set on the outside of the support block 9, and the other end of the spring 10 is set on the bottom end of the second straight bevel gear 11. This installation method allows the spring 10 to stably apply an elastic force to the second straight bevel gear 11, ensuring that the overload protection function is reliably realized and effectively preventing equipment damage.

[0021] A valve disc 12 is installed at the bottom of the support block 9. The valve disc 12 is the core actuator of the swing valve that controls the flow of the medium. By rotating with the support block 9, it directly controls the flow and blockage of the medium in the housing, thus determining the working state of the equipment. An inlet 13 is installed at the top of the housing 1. The inlet 13 is the channel for the medium to enter the swing valve, providing a stable input path for the medium and ensuring that the medium enters the housing 1 smoothly. An outlet assembly 14 is installed inside the housing 1. The outlet assembly 14 is the key channel for the medium output and also serves as the support for the bracket 16 and the limit block 15. The locking block 18 provides installation space to ensure that the media output and anti-backflow functions are implemented in tandem. The water outlet component 14 has an internal sliding connection with a limiting block 15. The limiting block 15 slides with the water outlet component 14 to limit the sliding range of the bracket 16, preventing the bracket 16 from deviating from the preset trajectory due to water flow impact, and ensuring the stability of the anti-backflow structure. The water outlet component 14 has an internal sliding connection with a bracket 16, which provides installation support for the elastic telescopic rod 17 and the locking block 18. The bracket 16 drives the two to move synchronously through its own sliding, so as to achieve normal media discharge and switching between the anti-backflow function.

[0022] A flexible telescopic rod 17 is provided on the rear side of the bracket 16. The flexible telescopic rod 17 has elastic telescopic characteristics and can drive the locking block 18 to move according to the change of water flow pressure, realizing the switching between normal water output and anti-backflow state. The locking block 18 is provided on the rear side of the flexible telescopic rod 17. The locking block 18 is the core component of anti-backflow. During normal water output, the water flow pushes it open to discharge water. During backflow, it is locked on the inner wall of the water output component 14 to intercept backflow and prevent equipment damage and production accidents. The top of the valve disc 12 abuts against the inner wall of the inlet 13. This structure ensures that when the valve disc 12 is closed, it fits tightly against the inner wall of the inlet 13 to prevent media leakage and ensure the reliability of on / off control. The locking block 18 is locked on the inner wall of the water output component 14. This locking structure ensures that the locking block 18 forms a stable interception barrier during backflow, effectively preventing backflow water from entering the equipment and improving the reliability and safety of equipment operation.

[0023] Based on the above embodiments, the following is the complete working principle of the above embodiments: When the equipment is working, the air pump assembly 2 drives the connecting rod 3 to rotate. At this time, the threaded rod 4 rotates, and the rotation of the first straight bevel gear 5 drives the support block 9 to rotate through the second straight bevel gear 11. The rotation of the support block 9 simultaneously drives the valve disc 12 to open and close. When the first straight bevel gear 5 moves to a certain extent, the second straight bevel gear 11 compresses the spring 10 to its limit. At this time, the second straight bevel gear 11 stops rotating, which can effectively prevent the connecting rod 3 from rotating due to high output power of the air pump assembly 2 or long-term wear. The movement causes deviations, and the large-angle rotation of valve disc 12 leads to severe wear. To avoid equipment damage and increase its operational stability, a bracket 16 is installed inside the water outlet assembly 14. When water is flowing normally, the water can be discharged through the bracket 16 via the locking block 18. When backflow occurs, the locking block 18 is locked inside the water outlet assembly 14 to intercept the backflowing water. The limit block 15 and the water outlet assembly 14 cooperate with each other to ensure that the bracket 16 can slide inside the water outlet assembly 14 and will not be discharged due to water flow. This effectively prevents equipment damage and production accidents caused by water backflow and increases equipment reliability.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A variable diameter pneumatic wear-resistant swing valve, comprising a housing (1), characterized in that: The top of the housing (1) is rotatably connected to an air pump assembly (2), the output end of the air pump assembly (2) is rotatably connected to a connecting rod (3), the bottom end of the connecting rod (3) is provided with a threaded rod (4), and the outer side of the threaded rod (4) is provided with a straight bevel gear (5).

2. The variable diameter pneumatic wear-resistant swing valve according to claim 1, characterized in that: A limiting ring (6) is sleeved on the outer side of the threaded rod (4), a slider (7) is provided on the inner wall of the limiting ring (6), a limiting sleeve (8) is provided on the outer side of the limiting ring (6), a support block (9) is provided inside the housing (1), a spring (10) is sleeved on the outer side of the support block (9), and a straight bevel gear (11) is provided on the outer side of the support block (9).

3. The variable diameter pneumatic wear-resistant swing valve according to claim 2, characterized in that: The bottom end of the support block (9) is provided with a valve disc (12), the top end of the housing (1) is provided with an inlet (13), the inside of the housing (1) is provided with a water outlet assembly (14), the inside of the water outlet assembly (14) is slidably connected with a limit block (15), the inside of the water outlet assembly (14) is slidably connected with a bracket (16), the rear side of the bracket (16) is provided with an elastic telescopic rod (17), and the rear side of the elastic telescopic rod (17) is provided with a locking block (18).

4. The variable diameter pneumatic wear-resistant swing valve according to claim 2, characterized in that: The slider (7) is slidably connected to the outside of the threaded rod (4), and the limiting sleeve (8) is sleeved on the outside of the support block (9).

5. The variable diameter pneumatic wear-resistant swing valve according to claim 3, characterized in that: The top of the valve disc (12) abuts against the inner wall of the inlet (13), and the locking block (18) is engaged with the inner wall of the water outlet assembly (14).

6. The variable diameter pneumatic wear-resistant swing valve according to claim 2, characterized in that: The second bevel gear (11) and the first bevel gear (5) are meshed.

7. The variable diameter pneumatic wear-resistant swing valve according to claim 2, characterized in that: One end of the spring (10) is located on the outside of the support block (9), and the other end of the spring (10) is located at the bottom end of the straight bevel gear (11).

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