Butterfly valve with multiple sealing structures

Abstract

The invention relates to the field of water valves, in particular to a butterfly valve with a multi-sealing structure, which comprises a water valve main pipe, telescopic water pipes are arranged on the left side and the right side of the water valve main pipe, each telescopic water pipe is fixedly communicated with the water valve main pipe through a buffer mechanism, and the two telescopic water pipes are freely telescopic in length. An opening and closing mechanism is further fixedly installed in the water valve main pipe, an installation box is further fixedly connected to the upper end of the water valve main pipe, the outer wall of the water valve main pipe is further fixedly connected with the installation box, the outer wall of the installation box is further fixedly connected with a limiting mechanism, and the limiting mechanism can conduct limiting control on the opening and closing mechanism. The powerful magnetic ring adsorbs iron sand, so that the iron sand moves to the powerful magnetic ring, the rubber circular ring sleeve is driven to be tightly attached to the rubber sealing ring, the sealing performance is enhanced, impurity invasion and internal leakage can be prevented, internal stability is maintained, the production efficiency and the product quality are improved, the service life of the device is prolonged, the maintenance cost is reduced, and powerful guarantee is provided for industrial production.

Description

Technical Field

[0001] The invention relates to the field of water valves, in particular to a butterfly valve with a multiple sealing structure. Background Art

[0002] As one of the commonly used control valves in pipeline systems, butterfly valves have been widely used in many industries such as petrochemicals, electric power and energy, municipal water supply and drainage, and building HVAC due to their compact structure, flexible and easy operation, and fast opening and closing speed.

[0003] However, with the continuous advancement of industrial technology and the continuous growth of social development needs, the operating conditions faced by pipeline systems have become increasingly complex and demanding. In many practical application scenarios, such as the circulating water cooling system of large industrial plants, long-distance high-pressure water pipelines, corrosive medium transportation pipelines of chemical companies, and flood discharge and irrigation systems of water conservancy and hydropower projects, the flow velocity, pressure, flow rate and other parameters of the fluid in the pipeline are often at a high level and may be accompanied by frequent fluctuations and changes;

[0004] For traditional butterfly valves, under such harsh working conditions, their internal structures are subjected to strong impact force from high-speed water flow for a long time. This impact force will not only cause serious wear and fatigue damage to key components such as the valve body, valve seat, and valve plate of the butterfly valve, thereby affecting the sealing performance of the valve and greatly increasing the risk of medium leakage, but also may cause vibration and deformation of the overall structure of the butterfly valve, destroy its mechanical properties and movement accuracy, shorten the service life of the valve, and may even cause failure and paralysis of the entire pipeline system, causing huge economic losses to the production and operation of the enterprise, and also posing a potential threat to public safety and environmental protection;

[0005] In addition, in the context of increasingly tight energy and increasing environmental awareness, improving the operating efficiency of pipeline systems, reducing energy consumption, and reducing resource waste and environmental pollution caused by equipment failure and maintenance have become the common goals pursued by various industries. Therefore, the development of a butterfly valve with an innovative design that can effectively resist water flow impact and significantly improve sealing performance and structural reliability has become a key technical issue that needs to be urgently resolved in the current fluid control field. It is also an urgent need to promote the technological upgrading and sustainable development of pipeline systems.

[0006] After searching, it was found that the prior art publication number is CN 117052918 B, which discloses a butterfly valve with a multiple sealing buffer structure. The butterfly valve includes a valve body, a valve seat, a valve plate, a valve stem, a control device, and a sealing assembly. The valve seat is tightly connected to the valve body, the valve seat is located on the inner wall of the valve body, the valve plate abuts against the valve seat, the valve stem passes through the valve body, the valve stem is rotatably connected to the valve body, the valve plate is tightly connected to the valve stem, the control device is tightly connected to the valve stem, the sealing assembly is tightly connected to the valve body, the sealing assembly includes packing, a clamping seat, and a bushing. The packing abuts against the valve stem, the clamping seat is tightly connected to the valve body, the bottom end of the clamping seat abuts against the packing, the bushing is sleeved on the valve body, the valve stem is rotatably connected to the bushing, the valve seat is fixed on the inner wall of the valve body, the valve plate fits on the valve seat to ensure the sealing of the valve, the valve plate is fixed to the valve stem by a pin, and the rotation of the valve stem drives the valve plate to rotate, thereby opening and closing the valve.

[0007] Therefore, when the above scheme is used, during valve operation, the buffer component can guide the impact force when the valve is closed and the pressure difference on both sides to the anti-tilt component, and the buffered force is applied to the valve stem through the cooperation of the piston rod and the fifth spring, so as to ensure the force balance of the valve stem and the stable and accurate closing of the valve, thereby extending its service life and sealing performance. However, this design cannot effectively alleviate the impact of high-speed water flow in the pipeline on the inside of the valve body. When the high-speed water flow impacts the valve body, its energy cannot be effectively reduced by the buffer structure, and directly acts on the valve seat, valve core and other components, which can easily cause severe wear and scouring of the components, thereby affecting the opening and closing function of the valve, causing jamming or failure, and also leading to problems such as reduced sealing performance and medium leakage, increasing maintenance costs and unstable operation factors. There are obvious limitations. For this reason, we propose a butterfly valve with a multiple sealing structure. Summary of the invention

[0008] The object of the present invention is to provide a butterfly valve with a multiple sealing structure to solve the problems raised in the above background technology.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A butterfly valve with a multiple sealing structure comprises a water valve main pipe, and telescopic water pipes are arranged on both sides of the water valve main pipe. Each of the telescopic water pipes is fixedly connected to the water valve main pipe through a buffer mechanism. The two telescopic water pipes can be freely extended in length to extend the docking distance between the water valve main pipe and the pipeline to be docked.

[0011] An opening and closing mechanism is fixedly installed inside the water valve main pipe, an installation box is fixedly connected to the upper end of the water valve main pipe, and a limiting mechanism is fixedly connected to the outer wall of the installation box, and the limiting mechanism can perform limit control on the opening and closing mechanism.

[0012] As a further feature of the present invention, the buffer mechanism includes an outer shell tube, and the end of the outer shell tube away from the water valve main pipe is fixedly connected to the corresponding telescopic water pipe through a rectangular tube. The water valve main pipe is made of stainless steel, which has many benefits. It has strong corrosion resistance and can resist erosion by various media, extend service life, and reduce replacement and maintenance costs. Its high strength makes it stable and reliable under high pressure, temperature changes and external forces, and it is not easy to be damaged. It has a smooth surface, which reduces water flow resistance and improves delivery efficiency. It also has good hygiene and is suitable for industries with high hygiene requirements. It has excellent comprehensive performance and high cost performance.

[0013] As a further feature of the present invention, the inner wall of the outer shell tube is also fixedly connected with a first connecting tube and a second connecting tube, the first connecting tube and the second connecting tube are fixedly connected via a rectangular tube, and the first connecting tube and the second connecting tube are connected to each other via four flushing water pipes. When high-speed water flows enter the second connecting tube through the flushing water pipes from different directions, the water flows collide with each other, so that the original high-speed linear kinetic energy of the water flow is dispersed and consumed, effectively reducing the impact force of the water flow on the subsequent pipeline structure, thereby greatly reducing the damage to the pipeline such as wear and deformation caused by the impact of the water flow, and significantly extending the service life of the entire pipeline system.

[0014] As a further feature of the present invention, the opening and closing mechanism includes a mating worm wheel, which is rotatably connected to the bottom end of the inner wall of the installation box. The inner wall of the installation box is rotatably connected with a mating worm, and the mating worm and the mating worm wheel are meshed with each other. The mating worm on the inner wall of the installation box is meshed with the mating worm wheel. This structure has significant advantages. On the one hand, precise meshing ensures the high efficiency and stability of power transmission, allowing related components to operate stably. On the other hand, its self-locking function effectively prevents the device from accidentally moving due to external force, thereby enhancing operational reliability. It plays a key role in the field of mechanical transmission and ensures precise operation of equipment.

[0015] As a further feature of the present invention, a ring box is fixedly connected to the inner wall of the water valve main pipe, a rubber ring sleeve is also fixedly connected to the inside of the ring box, iron sand is also filled between the ring box and the rubber ring sleeve, a rotating rod is also rotatably connected to the inside of the water valve main pipe, and the outer wall of the rotating rod is passed through the inside of the water valve main pipe and the ring box. The rubber ring sleeve has significant advantages in using rubber material. The good elasticity of rubber makes it fit tightly and has good sealing performance, which can effectively prevent leakage. At the same time, it has certain wear resistance and corrosion resistance, can cope with different working conditions, extend service life, reduce equipment maintenance costs, and ensure stable operation of equipment.

[0016] As a further feature of the present invention, one end of the rotating rod located inside the circular ring box is fixedly connected to a second closed plate, and the outer wall of the second closed plate is fixedly connected to a strong magnetic ring. The strong magnetic ring 22 uses a samarium cobalt magnet. As a high-performance permanent magnetic material, the samarium cobalt magnet has very outstanding characteristics. Among them, the Curie temperature is one of the key indicators for measuring the performance of permanent magnetic materials. It represents the critical temperature point at which the magnetism of the material disappears, and the Curie temperature of the samarium cobalt magnet can reach about seven hundred to eight hundred degrees Celsius. This outstanding characteristic gives it the ability to maintain stable and good magnetic properties in high temperature environments. Compared with other common permanent magnetic materials, the advantages of samarium cobalt magnets in high temperature conditions are undoubtedly evident. Ordinary magnets may quickly lose their magnetism due to rising temperature, resulting in performance degradation or even failure, while samarium cobalt magnets can work stably, greatly improving the reliability and stability of the equipment in high temperature environments.

[0017] As a further feature of the present invention, the left and right ends of the second closing plate are fixedly connected to the first closing plate, the outer wall of the first closing plate is fixedly connected to a plurality of rubber sealing rings, the limiting mechanism includes a second connecting box, the interior of the second connecting box is rotatably connected to a second gear via a rotating shaft, the outer wall of the second gear is fixedly connected to a matching worm, and a plurality of rubber sealing rings can enhance the sealing between the rubber ring sleeve, and a plurality of rubber sealing rings and the rubber ring sleeve are tightly matched, which significantly enhances the sealing between the two. This good sealing constructs a reliable barrier, effectively preventing the internal medium from leaking outward, ensuring the stable pressure inside the water valve main pipe, making the equipment run safer and more efficient, and at the same time, effectively blocking the infiltration of external impurities such as dust and water vapor into the inside, avoiding erosion and damage to key components, extending the service life of the equipment, reducing maintenance costs, and improving the overall reliability and stability of the equipment, providing a solid guarantee for the continuous and stable operation of the equipment.

[0018] As a further feature of the present invention, two first gears are further provided inside the second connecting box, and a rotating arm is fixedly connected to the outer wall of each of the first gears. An end of the rotating arm away from the first gear is fixedly connected to a limiting tooth, and the outer wall of the limiting tooth is engaged with the outer wall of the second gear. The upper end of the second connecting box is also fixedly connected to the first connecting box, and a matching rack is also slidably connected inside the first connecting box.

[0019] As a further feature of the present invention, the inner wall of the rectangular tube is slidably connected to a movable tube having a reset function, and one end of all the flushing water pipes close to the telescopic water pipe is in contact with the outer wall of the movable tube.

[0020] As a further feature of the present invention, the inner wall of the movable tube is rotatably connected to a plurality of rotating plates with a reset function, and the outer wall of the rotating plate is fixedly connected to a matching plate, and one end of all flushing water pipes close to the telescopic water pipe is in contact with the outer wall of the movable tube.

[0021] Beneficial Effects

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. When the water flows into the system, it will flow through the first connecting pipe, the flushing water pipe and finally reach the second connecting pipe. Inside the second connecting pipe, the water discharged from each flushing water pipe will impact the water discharged from another flushing water pipe in the opposite direction, so that the water flows converge in the pipe to form a unique water flow buffer zone. This ingenious design greatly slows down the speed of the water flow, successfully avoiding the water flow from directly impacting the structure inside the water valve main pipe at a high speed, reducing the direct impact of the water flow on the structure from the source, effectively reducing the risk of structural damage caused by the impact of the water flow, and thus significantly extending the service life of the water valve. At the same time, when the water flows to the inside of the first connecting pipe, the water flow in the first connecting pipe will flow into the second connecting pipe through the moving pipe. Due to the resistance exerted by the water flow on the matching plate, the matching plate will drive the rotating plate to rotate, and all the rotating plates will reduce the water flow speed by blocking the water flow, slowing down the water flow speed through double deceleration, and reducing the impact of the water flow on the components inside the water valve main pipe;

[0024] 2. The strong magnetic ring absorbs the iron sand and makes it move towards it, driving the rubber ring sleeve and the rubber sealing ring to fit closely, enhancing the sealing performance, preventing the intrusion of impurities and internal leakage, maintaining internal stability, improving production efficiency and product quality, extending the life of the device, reducing maintenance costs, and providing strong protection for industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of a butterfly valve with a multiple sealing structure;

[0026] Figure 2 It is a schematic diagram of the structural disassembly of a butterfly valve with a multiple sealing structure;

[0027] Figure 3 It is a schematic diagram of the internal structure of the shell tube of a butterfly valve with a multiple sealing structure;

[0028] Figure 4 It is a schematic diagram of the internal structure of an installation box of a butterfly valve with a multiple sealing structure;

[0029] Figure 5 A schematic diagram of the internal structure of a water valve main pipe of a butterfly valve with a multiple sealing structure;

[0030] Figure 6 A schematic diagram of the internal structure of a second connection box of a butterfly valve with a multiple sealing structure;

[0031] Figure 7 It is a schematic diagram of the position structure of a strong magnetic ring of a butterfly valve with a multiple sealing structure;

[0032] Figure 8 It is a schematic diagram of the internal structure of a circular ring box of a butterfly valve with a multiple sealing structure;

[0033] Fig. 9 It is a schematic diagram of the internal structure of a first connection box of a butterfly valve with a multiple sealing structure;

[0034] Fig.10 It is a schematic diagram of the internal structure of a moving pipe of a butterfly valve with a multiple sealing structure;

[0035] Fig.11 It is a schematic diagram of the matching plate position structure of a butterfly valve with a multiple sealing structure;

[0036] Fig.12 The figure is a schematic diagram of the position structure of the rotating plate of a butterfly valve with a multiple sealing structure.

[0037] In the figure: 1, water valve main pipe; 2, installation box; 3, rotating round handle; 4, matching worm gear; 5, matching worm; 6, mounting bolts; 7, telescopic water pipe; 8, rotating rod; 9, flushing water pipe; 10, first connecting pipe;

[0038] 11. Rotating circular plate; 12. First connecting box; 13. Threaded rod; 14. Matching rack; 15. First gear; 16. Rotating arm; 17. Second gear; 18. Ring box; 19. First closing plate; 20. Rubber sealing ring;

[0039] 21. Second closing plate; 22. Strong magnetic ring; 23. Rubber ring sleeve; 24. Second connecting box; 25. Limiting tooth; 26. Second connecting tube; 27. Shell tube; 28. Rectangular tube; 29. ​​Moving tube; 30. Rotating plate; 31. Matching plate; 32. Reset telescopic rod; 101. Buffer mechanism; 201. Limiting mechanism; 301. Opening and closing mechanism. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example 1: Please refer to Figure 1 , Figure 2As shown, a butterfly valve with a multiple sealing structure comprises a water valve main pipe 1, and telescopic water pipes 7 are arranged on both sides of the water valve main pipe 1. Each telescopic water pipe 7 is fixedly connected to the water valve main pipe 1 through a buffer mechanism 101. Two groups of buffer mechanisms 101 are symmetrically distributed on the outer wall of the water valve main pipe 1. One end of the telescopic water pipe 7 away from the buffer mechanism 101 is threadedly connected to a plurality of mounting bolts 6. The plurality of mounting bolts 6 are circumferentially distributed inside the corresponding telescopic water pipe 7. The two telescopic water pipes 7 can freely extend and retract their lengths to extend the docking distance between the water valve main pipe 1 and the pipe to be docked, breaking the limitation that the traditional water valve cannot extend the docking length. The operation is simple and convenient. The water valve main pipe 1 is fixedly connected to the pipe to be docked through the mounting bolts 6. An opening and closing mechanism 301 is also fixedly installed inside the water valve main pipe 1. The upper end of the water valve main pipe 1 is also fixedly connected to a mounting box 2, and the outer wall of the mounting box 2 is also fixedly connected to a limiting mechanism 201. The limiting mechanism 201 can limit the opening and closing mechanism 301.

[0042] Example 2: Please refer to Figure 2 , Figure 3 , Fig.10 , Fig.11 , Fig.12, as shown, the buffer mechanism 101 includes a shell tube 27, one end of the shell tube 27 away from the water valve main pipe 1 is fixedly connected to the corresponding telescopic water pipe 7, the inner wall of the shell tube 27 is also fixedly connected to the first connecting pipe 10 and the second connecting pipe 26, the first connecting pipe 10 and the second connecting pipe 26 are symmetrically distributed in the inner wall of the shell tube 27, the first connecting pipe 10 and the second connecting pipe 26 are fixedly connected through a rectangular tube 28, the inner wall of the rectangular tube 28 is slidably connected to the mobile pipe 29 with a reset function, and the mobile pipe 29 is connected to the second connecting pipe The pipes 26 are fixedly connected by a reset telescopic rod 32, and the reset telescopic rod 32 can drive the mobile pipe 29 to quickly reset. The inner wall of the mobile pipe 29 is rotatably connected to a plurality of rotating plates 30 with a reset function, and a reset torsion spring is fixedly connected between the rotating plate 30 and the inner wall of the mobile pipe 29, and a matching plate 31 is fixedly connected to the outer wall of the rotating plate 30. The first connecting pipe 10 and the second connecting pipe 26 are interconnected through four flushing water pipes 9, and one end of all the flushing water pipes 9 close to the telescopic water pipe 7 is connected to the outer wall of the mobile pipe 29. The first connecting pipe 10, the flushing water pipe 9, the second connecting pipe 26 and the water valve main pipe 1 are all made of stainless steel, and the stainless steel material has strong corrosion resistance, can resist the erosion of various acids and alkalis and chloride ion media, reduce valve damage and leakage, have good high temperature resistance, can adapt to different high temperature ranges, maintain structural stability, high strength, good toughness, can withstand medium and high pressure and impact vibration, excellent hygienic performance, non-toxic and tasteless, easy to clean, In accordance with the hygienic requirements of the food and pharmaceutical industries, the flushing water pipe 9 is in a "U" shape. When the docking water pipe passes water into the corresponding telescopic water pipe 7, water will flow from the telescopic water pipe 7 to the inside of the first connecting pipe 10, and the water in the first connecting pipe 10 will flow from the flushing water pipe 9 to the inside of the second connecting pipe 26. The water discharged from one end of each flushing water pipe 9 located inside the second connecting pipe 26 will impact the water discharged from the opposite flushing water pipe 9, and the water will converge inside the second connecting pipe 26, thereby achieving the purpose of slowing down the water flow speed;

[0043] See also Figure 4 - Figure 8As shown, the opening and closing mechanism 301 includes a matching worm wheel 4, which is rotatably connected to the bottom end of the inner wall of the installation box 2 through a rotating shaft. The inner wall of the installation box 2 is also rotatably connected to a matching worm 5 through a rotating shaft. The outer wall of the matching worm 5 is fixedly connected to a rotating round handle 3. In order to facilitate the staff to rotate the rotating round handle 3, the outer wall of the rotating round handle 3 is also fixedly connected to an anti-slip rubber pad to enhance the friction between the palm of the staff and the rotating round handle 3, and the matching worm 5 and the matching worm wheel 4 are meshed with each other. The inner wall of the water valve main pipe 1 is fixedly connected to a ring box 18, and the inside of the ring box 18 is also fixedly connected to a rubber ring sleeve 23. The rubber ring sleeve 23 is made of rubber material. The rubber material has significant characteristics. It has excellent elasticity and can produce a large deformation when subjected to force. It can quickly return to its original state after the force disappears. It also has good corrosion resistance and can effectively resist the erosion of various chemical substances. It can maintain its own physical and chemical properties in corrosive environments such as acids and alkalis, thereby ensuring its normal function. In addition, the rubber material also exhibits a certain degree of high temperature resistance. Within a specific high temperature range, it can still maintain structural integrity and stable performance. Iron sand is also filled between the ring box 18 and the rubber ring sleeve 23, and the iron sand between the ring box 18 and the rubber ring sleeve 23 will bulge the rubber ring sleeve 23. The outer wall of the rubber ring sleeve 23 is curved. The water valve main pipe 1 is also rotatably connected with a rotating rod 8, and the outer wall of the rotating rod 8 is penetrated through the water valve main pipe 1 and the ring box 18. One end of the rotating rod 8 located inside the ring box 18 is fixedly connected with a second closing plate 21, and the outer wall of the second closing plate 21 is fixedly connected with a strong magnetic ring 22. The strong magnetic ring 22 adopts samarium cobalt magnet, and samarium cobalt magnet is a high-performance permanent magnetic material with a high Curie temperature. The Curie temperature refers to the temperature point at which the magnetism of the material disappears. The Curie temperature of the samarium cobalt magnet can reach about 700 to 800 degrees Celsius, which enables it to still maintain good magnetism in a high temperature environment.

[0044] The left and right ends of the second closing plate 21 are fixedly connected to the first closing plate 19, and the outer wall of the first closing plate 19 is fixedly connected to a plurality of rubber sealing rings 20, and the rubber sealing rings 20 are also made of rubber material, which has good elasticity and resilience, and can enhance the sealing between the first closing plate 19 and the rubber ring sleeve 23. The plurality of rubber sealing rings 20 are distributed in an array from left to right on the outer wall of the first closing plate 19;

[0045] See also Figure 6 , Fig. 9As shown, the limiting mechanism 201 includes a second connecting box 24, and the second connecting box 24 is rotatably connected with the second gear 17 through a rotating shaft. The outer wall of the second gear 17 is fixedly connected to the matching worm 5. Two first gears 15 are also arranged inside the second connecting box 24. The two first gears 15 are symmetrically distributed inside the second connecting box 24. A plurality of weight-reducing holes are provided inside the second gear 17 and the first gear 15. The plurality of weight-reducing holes are circumferentially distributed inside the second gear 17 and the first gear 15. A rotating arm 16 is fixedly connected to the outer wall of each first gear 15. A weight-reducing hole is also provided on the outer wall of each rotating arm 16. One end of the rotating arm 16 away from the first gear 15 is fixedly connected to a limiting latch 25. The outer wall of the limiting latch 25 is engaged with the outer wall of the second gear 17. The two limiting latches 25 can limit and fix the second gear 17. The upper end of the second connecting box 24 is also fixedly connected to the first connecting box 12, and the first connecting box 12 is also slidably connected with a matching rack 14.

[0046] Specifically, a slide groove is provided on the inner wall of the first connection box 12, and the matching rack 14 is slidably connected with the inner wall of the slide groove. When the matching rack 14 is slidably connected in the inner wall of the slide groove, the slide groove can guide the matching rack 14 and also has a limiting function to improve the stability of the matching rack 14 when it moves. The inner wall of the slide groove and the outer wall of the matching rack 14 are coated with lubricating oil, which can reduce the friction between the slide groove and the matching rack 14, thereby extending the service life of the matching rack 14 and making it durable.

[0047] The left and right ends of the mating rack 14 are meshed with the corresponding first gear 15, the upper end of the mating rack 14 is rotatably connected to a threaded rod 13, and the outer wall of the threaded rod 13 is threadedly connected to the inner wall of the first connecting box 12, and the end of the mating rack 14 away from the mating rack 14 is fixedly connected to a rotating circular plate 11, which facilitates the staff to rotate the threaded rod 13.

[0048] The working principle of the present invention is: when in use, it is only necessary to connect the telescopic water pipe 7 to the pipe that needs to be docked by installing the bolts 6. After the connection is completed, the water flow will enter the system through the telescopic water pipe 7. When the water flow enters through the telescopic water pipe 7, the water will continue to flow to the inside of the first connecting pipe 10. The water flow in the first connecting pipe 10 will flow into the second connecting pipe 26 through the moving pipe 29. Due to the resistance exerted by the water flow on the matching plate 31, the matching plate 31 will drive the rotating plate 30 to rotate. All the rotating plates 30 will reduce the water flow speed by blocking the water flow. When the water flow speed flowing to the first connecting pipe 10 increases, the moving pipe 29 will move in the direction of the second connecting pipe 26, thereby compressing and accumulating force to reset the telescopic rod 32. When the outer wall of the moving pipe 29 is out of contact with the outer wall of the flushing water pipe 9, the water flow will flow to the second connecting pipe 26 through the flushing water pipe 9. The second connecting pipe 26 completes the flow conversion. When the water inside the flushing water pipe 9 flows to the second connecting pipe 26, inside the second connecting pipe 26, the water discharged from one end of each flushing water pipe 9 located inside the second connecting pipe 26 will impact each other with the water discharged from another flushing water pipe 9 in the opposite direction. The water flows converge inside the second connecting pipe 26 to form a water flow buffer, thereby effectively slowing down the speed of the water flow. Through this design, it is possible to avoid the water flow directly impacting the structure inside the water valve main pipe 1 at a high speed, reduce the direct impact of the water flow on the structure, and thus avoid possible structural damage, ensuring the long-term stable operation of the equipment. This fluid buffer design not only improves the durability of the system, but also ensures the smooth transition of the water flow, so that the entire system can maintain better safety and performance during operation;

[0049] When it is necessary to adjust the water flow inside the water valve main pipe 1, it is necessary to first rotate the rotating circular plate 11, which will drive the threaded rod 13 to start rotating. The rotation of the threaded rod 13 will cause the matching rack 14 to move downward, and the movement of the matching rack 14 will drive the two first gears 15 to rotate in opposite directions. As the first gear 15 rotates, the rotating arm 16 also starts to move accordingly. The movement of the rotating arm 16 causes the limit tooth 25 to disengage from the engagement with the outer wall of the second gear 17, thereby unlocking the second gear 17. At this time, the rotating round handle 3 becomes a key adjusting component. When the engagement between the limit tooth 25 and the outer wall of the second gear 17 is released, the rotating round handle 3 can be rotated. The rotation of the rotating round handle 3 further drives the matching worm 5 to rotate. The rotation of the matching worm 5 will drive the matching worm wheel 4 and the rotating rod 8 to rotate together. The rotation of the rod 8 causes the second closing plate 21 and the first closing plate 19 to start rotating together, thereby affecting the operation of the entire device. As the operation proceeds, the strong magnetic ring 22 and the rubber sealing ring 20 will gradually contact the outer wall of the rubber ring sleeve 23, and finally completely abut. At this time, since iron sand is installed between the ring box 18 and the rubber ring sleeve 23, the attraction of the strong magnetic ring 22 to the iron sand will gradually increase. This attraction makes the iron sand drive the contact between the rubber ring sleeve 23 and the rubber sealing ring 20 to be closer, thereby strengthening the sealing between the first closing plate 19 and the rubber ring sleeve 23, ensuring the overall stability and sealing effect of the system. Through this series of actions, the entire water flow regulation mechanism can be carried out smoothly, and the sealing performance is also effectively enhanced, thereby ensuring the high efficiency and safety of the water flow operation inside the water valve;

[0050] When the rotating circular plate 11 rotates in the opposite direction, the rotating circular plate 11 will drive the threaded rod 13 to rotate. According to the above working principle, the rotation of the threaded rod 13 will cause the rotating arm 16 to drive the limiting latch 25 to re-engage with the outer wall of the second gear 17. At this time, after the limiting latch 25 is re-engaged with the outer wall of the second gear 17, the second gear 17 will be limited and fixed, thereby preventing the rotating handle 3 from rotating. Through this operation, the adjustment mechanism of the entire system is locked, ensuring that no accidental rotation or adjustment will occur, thereby ensuring the safety and stability of the equipment.

[0051] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed in the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A butterfly valve with a multiple sealing structure, comprising a water valve main pipe (1), characterized in that: The water valve main pipe (1) is provided with telescopic water pipes (7) on both sides thereof, each of the telescopic water pipes (7) being fixedly connected to the water valve main pipe (1) via a buffer mechanism (101), and the two telescopic water pipes (7) can be freely extended in length, thereby extending the docking distance between the water valve main pipe (1) and the pipeline to be docked; An opening and closing mechanism (301) is also fixedly installed inside the water valve main pipe (1), a mounting box (2) is also fixedly connected to the upper end of the water valve main pipe (1), an outer wall of the water valve main pipe (1) is also fixedly connected to the mounting box (2), and a limiting mechanism (201) is also fixedly connected to the outer wall of the mounting box (2), and the limiting mechanism (201) can perform limiting control on the opening and closing mechanism (301).

2. A butterfly valve with a multiple sealing structure according to claim 1, characterized in that: The buffer mechanism (101) comprises an outer shell tube (27), and one end of the outer shell tube (27) away from the water valve main tube (1) is fixedly connected to a corresponding telescopic water tube (7).

3. The butterfly valve with a multiple sealing structure according to claim 2, characterized in that: The inner wall of the outer shell tube (27) is also fixedly connected with a first connecting tube (10) and a second connecting tube (26); the first connecting tube (10) and the second connecting tube (26) are fixedly connected via a rectangular tube (28); the first connecting tube (10) and the second connecting tube (26) are connected to each other via four flushing water pipes (9).

4. The butterfly valve with a multiple sealing structure according to claim 1, characterized in that: The opening and closing mechanism (301) comprises a matching worm wheel (4), the matching worm wheel (4) is rotatably connected to the bottom end of the inner wall of the installation box (2), the inner wall of the installation box (2) is rotatably connected to a matching worm (5), and the matching worm (5) and the matching worm wheel (4) are meshed with each other.

5. The butterfly valve with a multiple sealing structure according to claim 4, characterized in that: The inner wall of the water valve main pipe (1) is fixedly connected to a circular ring box (18), the interior of the circular ring box (18) is also fixedly connected to a rubber circular ring sleeve (23), iron sand is also filled between the circular ring box (18) and the rubber circular ring sleeve (23), the interior of the water valve main pipe (1) is also rotatably connected to a rotating rod (8), and the outer wall of the rotating rod (8) is arranged to penetrate the interior of the water valve main pipe (1) and the circular ring box (18).

6. The butterfly valve with a multiple sealing structure according to claim 5, characterized in that: One end of the rotating rod (8) located inside the annular box (18) is fixedly connected to a second closing plate (21), an outer wall of the second closing plate (21) is fixedly connected to a strong magnetic ring (22), both left and right ends of the second closing plate (21) are fixedly connected to a first closing plate (19), and an outer wall of the first closing plate (19) is fixedly connected to a plurality of rubber sealing rings (20).

7. The butterfly valve with a multiple sealing structure according to claim 1, characterized in that: The limiting mechanism (201) comprises a second connecting box (24), the interior of the second connecting box (24) being rotatably connected to a second gear (17) via a rotating shaft, and the outer wall of the second gear (17) being fixedly connected to a matching worm (5).

8. The butterfly valve with a multiple sealing structure according to claim 7, characterized in that: Two first gears (15) are also arranged inside the second connection box (24), and the outer wall of each of the first gears (15) is fixedly connected to a rotating arm (16), and one end of the rotating arm (16) away from the first gear (15) is fixedly connected to a limiting latch tooth (25), and the outer wall of the limiting latch tooth (25) is engaged with the outer wall of the second gear (17). The upper end of the second connection box (24) is also fixedly connected to the first connection box (12), and the inside of the first connection box (12) is also slidably connected to a matching rack (14).

9. The butterfly valve with a multiple sealing structure according to claim 3, characterized in that: The inner wall of the rectangular tube (28) is slidably connected to a movable tube (29) having a reset function, and one end of all the flushing water pipes (9) close to the telescopic water pipe (7) is in contact with the outer wall of the movable tube (29).

10. The butterfly valve with a multiple sealing structure according to claim 9, characterized in that: The inner wall of the movable tube (29) is rotatably connected to a plurality of rotating plates (30) having a reset function, and the outer wall of the rotating plate (30) is fixedly connected to a matching plate (31), and the ends of all flushing water pipes (9) close to the telescopic water pipe (7) are in contact with the outer wall of the movable tube (29).

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