Multifunctional freeze-proof valve

Abstract

The utility model belongs to mould processing fixed technology field, concretely is a kind of multifunctional freeze-proof valve, the utility can efficiently attenuate water hammer force and realize dynamic regulation, through the fluid inertia impact force of buffer airbag deformation absorption when valve opening and closing, cooperate with the pressure regulating structure of adjusting rod, threaded plate and adjusting spring, can according to fluid pressure, flow accurate adjustment buffering degree, avoid valve body and pipeline due to long-term water hammer effect damage, prolong equipment service life, the utility has automatic freeze-proof protection function, when liquid in valve body freezes and expands, freeze-proof airbag is pressed and pushes airtight rod to move, make telescopic sleeve expand and open adjusting hole, through the gas circulation of buffer airbag and adjusting airbag and reserve expansion space, without additional energy consumption or manual operation can prevent valve body cracking, adapt to cold region and unattended scene, improve the safety and applicability of valve in complex environment.

Description

Technical Field

[0001] This utility model relates to the field of mold processing and fixing technology, specifically a multifunctional antifreeze valve. Background Technology

[0002] Valves are currently key devices in fluid control systems, primarily used to control the flow state of fluids (liquids, gases, slurries, etc.) in pipelines or equipment. By changing the cross-sectional area of ​​the channel, they achieve precise control over flow rate, pressure, and direction. In industrial production, they can open, close, or regulate the transport of media according to process requirements, ensuring stable production processes. In municipal water supply and heating systems, they can control the distribution of media in different areas, facilitating maintenance and pressure balancing. In agricultural irrigation, they can achieve precise water supply to different areas through switching and flow regulation, avoiding water waste. In the energy sector, such as in oil and natural gas transportation, they can cut off hazardous media and regulate transport pressure, ensuring system safety.

[0003] Existing valves suffer from several drawbacks in practical use. First, upon closure, the fluid inertia can cause water hammer, a sudden impact that can deform the valve body and pipes or loosen connections. This is particularly problematic in high-pressure fluid systems, where prolonged water hammer significantly shortens equipment lifespan and increases maintenance costs. Second, in low-temperature environments, residual liquid inside the valve body can freeze and expand, potentially causing cracks. Traditional antifreeze measures, such as heating devices, require additional energy, or manual drainage is cumbersome and unsuitable for unattended scenarios. Furthermore, ordinary valves lack the ability to adjust for water hammer force, failing to dynamically adapt the buffering force based on fluid pressure and flow rate, thus limiting their applicability. These issues make it difficult for existing valves to balance safety and durability in cold regions and high-pressure fluid systems. Therefore, we propose a multi-functional antifreeze valve. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multifunctional antifreeze valve, solving the problems mentioned below.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-functional antifreeze valve, comprising,

[0007] A valve, comprising a valve body, a valve stem threadedly connected to the top of the valve body, a valve ring fixedly connected to the top of the valve stem, and a valve head rotatably connected to the bottom of the valve stem, the valve head being adapted to the valve body;

[0008] A buffer regulating device is used to attenuate the water hammer force generated when the valve is closed. The valve includes two regulating shells connected to the top of the valve body. The bottom of the regulating shells is connected to a regulating pipe. The bottom of the regulating pipe is provided with several regulating grooves. A buffer airbag is fixedly sleeved on the outside of the regulating pipe. The buffer airbag is connected to the regulating pipe through several regulating grooves.

[0009] An antifreeze device is used to prevent damage to the valve body due to excessive internal liquid expansion stress when the liquid inside the valve body is about to crystallize and freeze. The antifreeze device includes two antifreeze airbags fixedly connected inside the valve body.

[0010] Preferably, the buffer adjustment device further includes a threaded plate screwed onto the inner wall of the adjustment housing, an adjustment rod rotatably connected inside the adjustment housing, a limit block fixedly connected to the outside of the adjustment rod, the threaded plate sliding outside the limit block, and an adjustment ring fixedly connected to the top of the adjustment rod.

[0011] Preferably, the bottom of the threaded plate abuts against an adjusting spring, the bottom of the adjusting spring abuts against a sliding plate, the bottom of the sliding plate is fixedly connected to an adjusting airbag, the bottom of the adjusting airbag is fixedly connected to a fixing plate, the inside of the fixing plate is fixedly connected to the outside of the adjusting tube, and the inside of the adjusting airbag is fixedly connected to a return spring.

[0012] Preferably, an adjusting head is fixedly connected to the top of the adjusting tube, and an adjusting hole is provided on the outside of the adjusting head. The adjusting airbag is connected to the buffer airbag through the adjusting tube, and the sliding plate slides outside the adjusting rod.

[0013] Preferably, the antifreeze device further includes an antifreeze tube connected to the antifreeze airbag. An airtight rod is slidably connected inside the antifreeze tube. An airtight spring is fixedly connected to both ends of the airtight rod. A fixing bracket is fixedly connected to one end of each of the two airtight springs. Both fixing brackets are fixedly connected inside the antifreeze tube.

[0014] Preferably, one end of the antifreeze tube extends into the interior of the regulating tube, a telescopic sleeve is fixedly connected to one end of the antifreeze tube, an antifreeze head is fixedly connected to the top of the telescopic sleeve, the exterior of the antifreeze head is adapted to the regulating hole, a limit rod is fixedly connected to the top of the inner wall of the telescopic sleeve, and the limit rod is slidably connected inside the antifreeze tube.

[0015] Beneficial effects

[0016] This utility model provides a multifunctional antifreeze valve. Compared with the prior art, it has the following advantages:

[0017] 1. This practical device can efficiently attenuate water hammer force and achieve dynamic adjustment. By absorbing the fluid inertial impact force when the valve is opened and closed through the deformation of the buffer airbag, and in conjunction with the pressure adjustment structure composed of the adjusting rod, threaded plate and adjusting spring, the buffering force can be precisely adjusted according to the fluid pressure and flow rate, so as to avoid damage to the valve body and pipeline due to long-term water hammer and extend the service life of the equipment.

[0018] 2. This utility model has an automatic antifreeze protection function. When the liquid inside the valve body freezes and expands, the antifreeze airbag is pressed and pushes the airtight rod to move, causing the telescopic sleeve to expand and open the adjustment hole. The expansion space is reserved by the gas flow of the buffer airbag and the adjustment airbag. It can prevent the valve body from cracking without additional energy consumption or manual operation. It is suitable for cold regions and unattended scenarios, and improves the safety and applicability of the valve in complex environments. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the valve body of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the internal structure of the adjusting shell of this utility model;

[0022] Figure 4 for Figure 3 A magnified structural diagram of part A;

[0023] Figure 5 This is a three-dimensional structural diagram of the internal structure of the antifreeze tube of this utility model.

[0024] In the diagram: 1. Valve; 2. Valve body; 3. Buffer regulating device; 4. Valve stem; 5. Valve ring; 6. Valve head; 7. Regulating shell; 8. Regulating ring; 9. Regulating rod; 10. Limiting block; 11. Threaded plate; 12. Regulating spring; 13. Regulating pipe; 14. Regulating groove; 15. Buffer airbag; 16. Antifreeze device; 17. Fixing plate; 18. Regulating airbag; 19. Return spring; 20. Sliding plate; 21. Regulating head; 22. Regulating hole; 23. Antifreeze pipe; 24. Antifreeze airbag; 25. Airtight rod; 26. Airtight spring; 27. Fixing frame; 28. Telescopic sleeve; 29. ​​Antifreeze head; 30. Limiting rod. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-5 This utility model provides a technical solution:

[0027] A multi-functional antifreeze valve, comprising,

[0028] Valve 1 includes valve body 2, valve stem 4 is threaded to the top of valve body 2, valve ring 5 is fixedly connected to the top of valve stem 4, and valve head 6 is rotatably connected to the bottom of valve stem 4. Valve head 6 is adapted to valve body 2.

[0029] When valve 1 needs to be opened or closed, the valve ring 5 is rotated. The rotation of valve ring 5 causes valve stem 4 to rotate inside the valve body 2. At this time, valve stem 4 moves at the top of valve body 2, causing valve head 6 to move, thus opening or closing valve 1.

[0030] The buffer regulating device 3 is used to attenuate the water hammer force generated when the valve 1 is closed. The valve 1 includes two regulating shells 7 connected to the top of the valve body 2. The bottom of the regulating shell 7 is connected to the regulating pipe 13. The bottom of the regulating pipe 13 is provided with several regulating grooves 14. The outside of the regulating pipe 13 is fixedly sleeved with a buffer airbag 15. The buffer airbag 15 is connected to the regulating pipe 13 through several regulating grooves 14.

[0031] The buffer adjustment device 3 also includes a threaded plate 11 threadedly connected to the inner wall of the adjustment housing 7, an adjustment rod 9 rotatably connected inside the adjustment housing 7, a limit block 10 fixedly connected to the outside of the adjustment rod 9, the threaded plate 11 sliding outside the limit block 10, and an adjustment ring 8 fixedly connected to the top of the adjustment rod 9.

[0032] The bottom of the threaded plate 11 abuts against an adjusting spring 12, the bottom of the adjusting spring 12 abuts against a sliding plate 20, the bottom of the sliding plate 20 is fixedly connected to an adjusting airbag 18, the bottom of the adjusting airbag 18 is fixedly connected to a fixing plate 17, the inside of the fixing plate 17 is fixedly connected to the outside of the adjusting tube 13, and the inside of the adjusting airbag 18 is fixedly connected to a return spring 19.

[0033] An adjustment head 21 is fixedly connected to the top of the adjustment tube 13. An adjustment hole 22 is opened on the outside of the adjustment head 21. The adjustment airbag 18 is connected to the buffer airbag 15 through the adjustment tube 13. The sliding plate 20 slides on the outside of the adjustment rod 9.

[0034] The above-mentioned structure can reduce the water hammer force generated by valve 1 when it is opened and closed, thus preventing damage to valve 1. At the same time, it can adjust the attenuation force of valve 1 on water hammer. Specifically, when valve 1 is opened and closed, the liquid inside valve 1 moves and then quickly comes to a stop. At this time, the liquid inside valve 1 still has inertia, which causes valve 1 to be subjected to a large stress momentarily. At this time, the water hammer force compresses the gas inside the buffer airbag 15, causing the buffer airbag 15 to deform. This allows the inertial liquid inside valve 1 to fill the space reserved after the buffer airbag 15 is deformed, thereby reducing the water hammer force and preventing damage to valve 1.

[0035] More specifically, by rotating the adjusting ring 8, the adjusting ring 8 drives the adjusting rod 9 to rotate. The rotating adjusting rod 9 drives the threaded plate 11 to move spirally inside the adjusting shell 7, pressing the adjusting spring 12. At this time, the adjusting spring 12 moves, causing the sliding plate 20 to slide outside the adjusting rod 9. The sliding plate 20 slides and compresses the adjusting airbag 18. The compression of the adjusting airbag 18 increases the internal air pressure and connects it with the gas inside the buffer airbag 15 through the adjusting pipe 13, increasing the deformation pressure of the buffer airbag 15, thereby adjusting the magnitude of the attenuated water hammer force inside the valve 1.

[0036] Antifreeze device 16 is used to prevent damage to valve body 2 caused by excessive internal liquid expansion stress when the liquid inside valve body 2 is about to crystallize and freeze. Antifreeze device 16 includes two antifreeze airbags 24 fixedly connected inside valve body 2.

[0037] The antifreeze device 16 also includes an antifreeze tube 23 connected to the antifreeze airbag 24. An airtight rod 25 is airtightly slidably connected inside the antifreeze tube 23. An airtight spring 26 is fixedly connected to both ends of the airtight rod 25. A fixing bracket 27 is fixedly connected to one end of each of the two airtight springs 26. The two fixing brackets 27 are fixedly connected inside the antifreeze tube 23.

[0038] One end of the antifreeze tube 23 extends into the interior of the regulating tube 13. A telescopic sleeve 28 is fixedly connected to one end of the antifreeze tube 23. An antifreeze head 29 is fixedly connected to the top of the telescopic sleeve 28. The exterior of the antifreeze head 29 is adapted to the regulating hole 22. A limit rod 30 is fixedly connected to the top of the inner wall of the telescopic sleeve 28. The limit rod 30 is slidably connected inside the antifreeze tube 23.

[0039] When adjusting the magnitude of the water hammer force, press down the antifreeze device 16. At this time, the adjustment hole 22 is separated from the outside of the antifreeze head 29, so the pressure inside the buffer airbag 15 can be adjusted. After the adjustment is completed, release the antifreeze device 16 and rotate the adjustment ring 8 in the opposite direction. At this time, the deformation space of the buffer airbag 15 is reserved.

[0040] Furthermore, the aforementioned structure prevents damage to valve 1 caused by the expansion of liquid inside the valve due to freezing when valve 1 is about to freeze. Specifically, when one end of valve 1 gradually freezes, the flow at that end of valve 1 is already stopped. Because the liquid inside valve 1 freezes from the outside in, when the outer periphery of the liquid inside valve 1 gradually freezes, the liquid on the outer periphery of valve 1 compresses the antifreeze device 16, forcing the gas inside the antifreeze device 16 into the antifreeze pipe 23. At this time, the airtight rod 25 moves, and the two airtight springs... When the spring 26 extends and retracts, the airtight rod 25 moves, forcing the gas inside the antifreeze tube 23 into the telescopic sleeve 28. At this time, the telescopic sleeve 28 expands, causing the antifreeze head 29 to separate from the adjusting hole 22. Due to the reverse rotation of the adjusting ring 8, the gas pressure inside the adjusting air bladder 18 is less than the gas pressure inside the buffer air bladder 15. When the antifreeze head 29 separates from the adjusting hole 22, the gas inside the buffer air bladder 15 mixes with the gas inside the adjusting air bladder 18, allowing the liquid inside the valve 1 to expand inward through the reserved space during the fixed expansion, thus preventing damage to the valve 1.

[0041] Working principle: When valve 1 needs to be opened or closed, the valve ring 5 is rotated. The rotation of valve ring 5 drives valve stem 4 to rotate inside the valve body 2. At this time, valve stem 4 moves at the top of valve body 2, which drives valve head 6 to move, so that valve 1 can be opened or closed.

[0042] The above-mentioned structure can reduce the water hammer force generated by valve 1 when it is opened and closed, thus preventing damage to valve 1. At the same time, it can adjust the attenuation force of valve 1 on water hammer. Specifically, when valve 1 is opened and closed, the liquid inside valve 1 moves and then quickly comes to a stop. At this time, the liquid inside valve 1 still has inertia, which causes valve 1 to be subjected to a large stress momentarily. At this time, the water hammer force compresses the gas inside the buffer airbag 15, causing the buffer airbag 15 to deform. This allows the inertial liquid inside valve 1 to fill the space reserved after the buffer airbag 15 is deformed, thereby reducing the water hammer force and preventing damage to valve 1.

[0043] By rotating the adjusting ring 8, the adjusting ring 8 rotates, causing the adjusting rod 9 to rotate. The rotating adjusting rod 9 causes the threaded plate 11 to move spirally inside the adjusting shell 7, pressing the adjusting spring 12. At this time, the adjusting spring 12 moves, causing the sliding plate 20 to slide outside the adjusting rod 9. The sliding plate 20 slides and compresses the adjusting airbag 18. The compressed adjusting airbag 18 pressurizes the air pressure inside it and connects it with the gas inside the buffer airbag 15 through the adjusting pipe 13, increasing the deformation pressure of the buffer airbag 15, thereby adjusting the magnitude of the attenuated water hammer force inside the valve 1.

[0044] When adjusting the magnitude of the water hammer force, press down the antifreeze device 16. At this time, the adjustment hole 22 is separated from the outside of the antifreeze head 29, so the pressure inside the buffer airbag 15 can be adjusted. After the adjustment is completed, release the antifreeze device 16 and rotate the adjustment ring 8 in the opposite direction. At this time, the deformation space of the buffer airbag 15 is reserved.

[0045] When one end of valve 1 gradually freezes, it stops flowing. Because the liquid inside valve 1 freezes from the outside in, as the outer periphery of the liquid inside valve 1 freezes, the liquid on the outer periphery of valve 1 compresses the antifreeze device 16, forcing the gas inside the antifreeze device 16 into the antifreeze tube 23. At this time, the airtight rod 25 moves, and the two airtight springs 26 extend and retract. The movement of the airtight rod 25 forces the gas inside the antifreeze tube 23 into the telescopic sleeve 28. The telescopic sleeve 28 then expands, causing the antifreeze head 29 to separate from the adjusting hole 22. Due to the reverse rotation of the adjusting ring 8, the gas pressure inside the adjusting airbag 18 is lower than the gas pressure inside the buffer airbag 15. When the antifreeze head 29 separates from the adjusting hole 22, the gas inside the buffer airbag 15 mixes with the gas inside the adjusting airbag 18, allowing the liquid inside valve 1 to expand inward through the reserved space during fixed expansion, thus preventing damage to valve 1.

[0046] 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.

[0047] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional antifreeze valve, characterized in that: include, A valve (1) includes a valve body (2), a valve stem (4) is threaded to the top of the valve body (2), a valve ring (5) is fixedly connected to the top of the valve stem (4), and a valve head (6) is rotatably connected to the bottom of the valve stem (4), the valve head (6) being adapted to the valve body (2). A buffer regulating device (3) is used to attenuate the water hammer force generated when the valve (1) is closed. The valve (1) includes two regulating shells (7) connected to the top of the valve body (2). The bottom of the regulating shell (7) is connected to a regulating pipe (13). The bottom of the regulating pipe (13) is provided with several regulating grooves (14). A buffer airbag (15) is fixedly sleeved on the outside of the regulating pipe (13). The buffer airbag (15) is connected to the regulating pipe (13) through several regulating grooves (14). Antifreeze device (16) is used to prevent damage to valve body (2) caused by excessive internal liquid expansion stress when the liquid inside valve body (2) is about to crystallize and freeze. The antifreeze device (16) includes two antifreeze airbags (24) fixedly connected inside valve body (2).

2. The multifunctional antifreeze valve according to claim 1, characterized in that: The buffer adjustment device (3) further includes a threaded plate (11) threadedly connected to the inner wall of the adjustment shell (7). An adjustment rod (9) is rotatably connected inside the adjustment shell (7). A limit block (10) is fixedly connected to the outside of the adjustment rod (9). The threaded plate (11) slides outside the limit block (10). An adjustment ring (8) is fixedly connected to the top of the adjustment rod (9).

3. The multifunctional antifreeze valve according to claim 2, characterized in that: The bottom of the threaded plate (11) abuts against an adjusting spring (12), the bottom of the adjusting spring (12) abuts against a sliding plate (20), the bottom of the sliding plate (20) is fixedly connected to an adjusting airbag (18), the bottom of the adjusting airbag (18) is fixedly connected to a fixing plate (17), the inside of the fixing plate (17) is fixedly connected to the outside of the adjusting tube (13), and the inside of the adjusting airbag (18) is fixedly connected to a return spring (19).

4. A multifunctional antifreeze valve according to claim 3, characterized in that: An adjustment head (21) is fixedly connected to the top of the adjustment tube (13). An adjustment hole (22) is provided on the outside of the adjustment head (21). The adjustment airbag (18) is connected to the buffer airbag (15) through the adjustment tube (13). The sliding plate (20) slides on the outside of the adjustment rod (9).

5. A multifunctional antifreeze valve according to claim 4, characterized in that: The antifreeze device (16) also includes an antifreeze tube (23) connected to the antifreeze airbag (24). An airtight rod (25) is airtightly slidably connected inside the antifreeze tube (23). An airtight spring (26) is fixedly connected to both ends of the airtight rod (25). A fixing bracket (27) is fixedly connected to one end of each of the two airtight springs (26). The two fixing brackets (27) are fixedly connected inside the antifreeze tube (23).

6. A multifunctional antifreeze valve according to claim 5, characterized in that: One end of the antifreeze tube (23) extends into the interior of the regulating tube (13). A telescopic sleeve (28) is fixedly connected to one end of the antifreeze tube (23). An antifreeze head (29) is fixedly connected to the top of the telescopic sleeve (28). The exterior of the antifreeze head (29) is adapted to the regulating hole (22). A limiting rod (30) is fixedly connected to the top of the inner wall of the telescopic sleeve (28). The limiting rod (30) is slidably connected inside the antifreeze tube (23).

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