Suspension type anti-impact energy-saving valve

Abstract

The utility model relates to a kind of suspension type anti-impact energy-saving valve, including valve body, the valve body is equipped with center valve cavity, center valve cavity opposite side is equipped with the fluid passage of intercommunication, center valve cavity is equipped with the sealing element that can block one side fluid passage, the sealing element is rotatably connected with valve body by hinged axle, hinged axle is located above sealing element, sealing element includes sealing plate and hemispherical anti-impact component, sealing plate one side is sealed with fluid passage cooperation, hemispherical anti-impact component is fixedly connected in sealing plate other side.The utility model sealing element adopts hemispherical hollow design, light in weight, same equivalent compression strength weight only 1 / 2 of solid plate, can reduce opening force degree.Hemispherical hollow suspension design, when for check valve, liquid medium buoyancy can reduce resistance, reduce energy loss, close when spherical surface can disperse impact force, enhance impact strength.Hemispherical hollow structure can be applicable to valve, check valve, quick-closing valve etc.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a suspended anti-impact energy-saving valve. Background Technology

[0002] Currently, in locations where solid-gas, solid-liquid, or solid-gas-liquid mixtures flow, such as power plants and chemical plants, flap valves are commonly used to effectively control the flow of these fluids. Most commonly used flap valves have a valve plate inside the valve body that can seal the valve orifice. A rotating shaft is fixed to the upper end of the valve plate, and the shaft rotates with the valve body. Rotating the shaft drives the valve plate to flip, thus opening and closing the valve orifice.

[0003] Because existing flap valves typically have a flat valve plate structure, when the fluid pressure is too high, the center of the valve plate is impacted by the high-pressure fluid, which can easily cause the center of the valve plate to deform and dent. When the center of the valve plate is dented, the edges of the valve plate will warp and deform in the opposite direction, creating a gap between the edge of the valve plate and the valve hole, thus losing its sealing performance. Furthermore, when the valve plate is opened, the pressure difference on both sides of the valve plate makes it difficult to force it open. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a suspended, impact-resistant, energy-saving valve. The sealing element employs a semi-hollow spherical design, resulting in a lightweight component; its weight is only half that of a solid plate with the same compressive strength, thus reducing the opening force. The hemispherical hollow suspension design, when used in check valves or quick-closing valves, allows the buoyancy of the liquid medium to reduce resistance and energy loss. Upon closing, the spherical surface disperses impact force and enhances impact resistance. The hemispherical hollow structure can be used as a flap valve, check valve, quick-closing valve, etc., improving closing speed and safety reliability.

[0005] This utility model is achieved through the following technical solution: a suspended anti-impact energy-saving valve, including a valve body, the valve body having a central valve cavity, fluid channels connected to each other on opposite sides of the central valve cavity, a sealing element that can block one side of the fluid channel in the central valve cavity, the sealing element being rotatably connected to the valve body via a hinge shaft, the hinge shaft being located above the sealing element, the sealing element including a sealing plate and a hemispherical anti-impact component, one side of the sealing plate being sealed to the fluid channel, and the hemispherical anti-impact component being fixedly connected to the other side of the sealing plate.

[0006] This design utilizes the fluid channels on both sides of the central valve chamber for fluid inlet and outlet. The seal is connected to the valve body via a hinge and flips, causing the sealing plate to seal one of the fluid channels, thus enabling the valve to open and close. The sealing plate is reinforced at its center by hemispherical anti-impact components on its side. Fluid impacts are effectively dispersed on the spherical surface, enhancing the impact resistance of the sealing plate's center and preventing edge deformation, thereby ensuring the sealing performance of the seal.

[0007] As an optimization, the hemispherical shock-resistant component has a receiving cavity, and the sealing plate has a threaded hole communicating with the receiving cavity, with a sealing plug screwed into the threaded hole. This optimized hemispherical shock-resistant component is a hollow design. By injecting a medium into the receiving cavity, the overall weight of the seal is increased, allowing the seal to adjust its weight according to the fluid pressure. The seal has sufficient weight to swing and flip, ensuring rapid valve closure. A vacuum can also be created to prevent overpressure caused by gas expansion inside the hemisphere when used with high-temperature steam.

[0008] As an optimization, a valve seat is fixedly connected to the end of the fluid passage that seals with the sealing element, and the sealing plate of the sealing element seals with the valve seat. This optimized solution uses a valve seat and sealing element to seal with each other, resulting in a more stable sealing effect.

[0009] As an optimization, the hinge shaft is a circular shaft, with both ends passing through the valve body and rotatably connected to it in a sealing manner. Two connecting rods are fixedly connected to the seal, and each connecting rod has a movable collar fixedly connected to its end furthest from the seal. These two movable collars are rotatably fitted onto the circular shaft. In this optimized design, the seal is rotatably fitted onto the circular shaft via the movable collars, allowing the seal to autonomously rotate and open / close through fluid flow, resulting in a faster response and improved closing speed.

[0010] As an optimization, the movable collar is a bearing, with the inner ring of the bearing fixedly connected to the circular shaft and the connecting rod fixedly connected to the outer ring of the bearing. In this optimized design, the movable collar, using a bearing, can be fixed to the circular shaft, thus fixing the position of the movable collar and consequently ensuring the fixed position of the seal, preventing the seal from shifting and losing its sealing effect.

[0011] As an optimization, one end of a pressure rod is fixedly connected to the circular shaft, and the other end of the pressure rod contacts the outer wall of the hemispherical impact-resistant component. In this optimized solution, the pressure rod is fixedly connected to the circular shaft, which can drive the pressure rod to rotate, thereby pressing the pressure rod against the sealing element to forcibly close the seal and ensure the sealing effect.

[0012] As an optimization, a balance pipe is fixedly connected to the valve body. One end of the balance pipe is connected to the fluid channel on the other side, and the other end of the balance pipe is connected to the central valve cavity. In this optimized solution, when the seal is sealed, the fluid in the outlet fluid channel will experience backflow. The backflowing fluid can be buffered by the balance pipe and reintroduced into the fluid channel, so that the fluid pressure is balanced and stable, preventing excessive pressure of the backflowing fluid from causing a large impact on the seal and ensuring the durability of the seal.

[0013] As an optimization, a pressure relief device is also included. This device comprises a pressure relief tank, a pressure relief pipeline, and a return water pipeline. A fluid passage, sealed to the sealing element, is connected to the pressure relief tank via the pressure relief pipeline. A one-way pressure relief valve is installed on the pressure relief pipeline. The central valve chamber is connected to the pressure relief tank via the return water pipeline, which is equipped with a delivery pump and a switching valve. In this optimized solution, when the fluid pressure in the fluid passage exceeds the threshold of the one-way pressure relief valve, the fluid can be released into the pressure relief tank for pressure relief, thereby ensuring stable and safe pressure within the fluid passage. The fluid in the pressure relief tank is then delivered to the central valve chamber via the delivery pump, avoiding fluid waste.

[0014] As an optimization, a safety valve and an exhaust valve are installed on the pressure relief tank. This optimized solution uses the safety valve and exhaust valve to release pressure, preventing excessive internal pressure in the pressure relief tank and ensuring stable and safe internal pressure.

[0015] As an optimization, the hinge shaft is a square shaft, with both ends passing through the valve body and rotatably connected to it in a sealing manner. Two connecting rods are fixedly connected to the seal, and square collars are fixedly attached to the ends of the two connecting rods furthest from the seal. These two square collars are fixedly fitted onto the square shaft. In this optimized design, the hinge shaft is square, thus allowing the square shaft to directly drive the seal to rotate, achieving forced opening and closing of the seal.

[0016] As an optimization, a positioning bolt is threaded onto one side wall of the square collar, penetrating the side wall of the square collar and abutting against the square shaft. In this optimized solution, the square collar is fixed to the square shaft by the positioning bolt, thereby ensuring the position of the seal is fixed and preventing the seal from shifting and losing its sealing effect.

[0017] As an optimization, a three-way guide pipe is fixedly connected to the valve body. The first pipe of the three-way guide pipe is connected to the central valve cavity, and the fluid channel that seals with the sealing element is connected to the second pipe of the three-way guide pipe. The third pipe of the three-way guide pipe is emptied, and on / off valves are installed on the first, second, and third pipes of the three-way guide pipe. In this optimized design, when the valve is closed, there is fluid on one side of the sealing element and no fluid on the other side, resulting in an imbalance of pressure on both sides of the sealing element. The sealing element is compressed by the fluid pressure and is difficult to open. The three-way guide pipe can guide the fluid to the other side, balancing the pressure on both sides of the sealing element, making the sealing element easier to open and saving energy for opening the valve.

[0018] As an optimization, an opening cam is provided in the fluid channel that seals with the seal. The opening cam is rotatably connected to the valve body via a rotating rod. When the eccentric end of the opening cam contacts the sealing plate, it can drive the seal to open. In this optimized solution, when the pressure difference across the seal is too large and opening is difficult, the seal can be pushed open by rotating the opening cam, making the seal easier to open.

[0019] As an optimization, the valve body has a central valve chamber and two fluid channels, which are arranged opposite each other on both sides of the central valve chamber. The two fluid channels are used for water inlet and water outlet, respectively, and the sealing element is in a sealing fit with the fluid channel used for water inlet. The valve of this optimized scheme is suitable for pipelines that transport fluid in one direction.

[0020] As an optimization, the valve body has two central valve chambers arranged axially and three fluid channels. The two central valve chambers are connected on opposite sides by a fluid channel, and each of the two central valve chambers has a fluid channel on its opposite sides. The seals in the two central valve chambers are respectively sealed to both ends of the fluid channel located between the two central valve chambers. The valve of this optimized scheme is suitable for pipelines that transport fluids in both directions.

[0021] As an optimization, a four-way guide pipe is fixedly connected to the valve body. The first and second pipes of the four-way guide pipe are respectively connected to the two central valve chambers, the third pipe of the four-way guide pipe is emptied, and the fourth pipe of the four-way guide pipe is connected to the fluid channel located between the two central valve chambers. Each of the four pipes of the four-way guide pipe is equipped with a switching valve. This optimized solution, through the coordination of the various pipes of the four-way guide pipe, achieves a balance of fluid pressure on both sides of the seal, making the seal easier to open, requiring less effort to operate, and saving energy for opening the valve.

[0022] The beneficial effects of this utility model are as follows: 1. The valve design has two valve body structures, one for unidirectional conveying and the other for bidirectional conveying, making the application scenarios more diverse.

[0023] 2. When a unidirectional conveying valve body structure is adopted, the sealing element and the inlet fluid channel are sealed together to achieve opening and closing. Furthermore, the hinge shaft that rotates the internal sealing element has both circular and square shaft structures, allowing for flexible application in different scenarios and greater convenience. When a square shaft is used, the hinge shaft and the sealing element are fixedly connected, and the hinge shaft can directly drive the sealing element to rotate, achieving forced opening and closing of the sealing element, resulting in more stable operation. When a circular shaft is used, the sealing element and the circular shaft are rotatably connected, and the sealing element can achieve autonomous closing through the inflow and outflow of fluid, with a fast response and quick-closing function. The circular shaft then drives a pressure rod to press the sealing element, ensuring a tight seal and providing dual protection of autonomous and forced closing, improving closing speed and safety reliability.

[0024] 3. When the seal is closed, the center of the sealing plate is reinforced by the hemispherical anti-impact component on its side. Fluid impact can effectively disperse the impact force on the spherical surface and enhance the impact resistance of the center of the sealing plate, thereby effectively preventing the edge deformation of the sealing plate and ensuring the sealing performance of the seal.

[0025] 4. When the seal is closed, the fluid in the fluid channel on the outlet side will flow back. The flow back fluid will be transported back to the fluid channel through the balance pipe, thereby balancing the backflow pressure, reducing the impact of the backflow pressure on the seal, and further ensuring the stability and durability of the seal.

[0026] 5. When the seal is closed, if the pressure in the fluid channel on the inlet side is too high, the pressure can be released into the pressure relief tank through the one-way pressure relief valve, thereby ensuring the stability of the internal pressure of the channel. The fluid in the pressure relief tank is then transported to the central valve chamber by a transfer pump to avoid fluid waste.

[0027] 6. When the seal needs to be opened, the unidirectional conveying valve body uses the three-way guide pipe to balance the pressure on both sides of the seal; the bidirectional conveying valve body uses the four-way guide pipe to balance the pressure on both sides of the seal. This makes the seal easier to open and the operation less strenuous, thus greatly saving the energy required to open the valve and achieving energy saving. Attached Figure Description

[0028] Figure 1 These are schematic diagrams of the valve body structure for Examples 1 to 6; Figure 2 This is a front cross-sectional view of Example 1 (a schematic diagram of the seal in the closed state). Figure 3 (Diagram showing the seal in open state) Figure 4 This is a left sectional view of Example 1; Figure 5 This is a front cross-sectional view of Example 2; Figure 6 This is a front cross-sectional view of Example 3; Figure 7 This is a front cross-sectional view of Example 4; Figure 8 for Figure 7 Enlarged view of part A; Figure 9 This is a left sectional view of Example 4; Figure 10 This is a front cross-sectional view of Example 5; Figure 11 This is a front cross-sectional view of Example 6; Figure 12 This is a schematic diagram of the valve body structure in Example 7; Figure 13 This is a front cross-sectional view of Example 7; As shown in the figure: 1. Valve body; 2. Valve cover; 3. Valve seat; 4. Seal; 41. Sealing plate; 42. Hemispherical anti-impact component; 43. Receiving cavity; 44. Sealing plug; 5. Circular shaft; 6. Pressure rod; 7. Mounting bushing; 8. Connecting rod; 9. Movable collar; 10. Balance pipe; 11. Central valve cavity; 12. Fluid passage; 13. Pressure relief tank; 14. Pressure relief pipeline; 15. One-way pressure relief valve; 16. Return water pipeline; 17. Switch valve; 18. Transfer pump; 19. Safety valve; 20. Exhaust valve; 21. Square shaft; 22. Square collar; 23. Positioning bolt; 24. Three-way guide pipe; 25. Four-way guide pipe; 26. Door opening cam; 27. Rotating rod. Detailed Implementation

[0029] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0030] like Figures 1-13 As shown, a suspended anti-impact energy-saving valve includes a valve body 1, which has a central valve chamber 11. Fluid channels 12 are connected to each other on opposite sides of the central valve chamber 11. A sealing element 4 is provided inside the central valve chamber 11 to block one side of the fluid channel 12. A valve cover 2 is bolted to the top opening of the central valve chamber 11 for easy internal inspection and maintenance.

[0031] The sealing element 4 is rotatably connected to the valve body 1 via a hinge shaft, which is located above the sealing element 4. The hinge shaft is horizontally positioned, and the sealing element 4 rotates around the hinge shaft to open and close the valve. The sealing element 4 includes a sealing plate 41 and a hemispherical anti-impact component 42. One side of the sealing plate 41 is sealed to the fluid channel 12 on that side, and the hemispherical anti-impact component 42 is fixed to the other side of the sealing plate 41.

[0032] Preferably, the hemispherical shock-resistant component 42 has a receiving cavity 43, and the sealing plate 41 has a threaded hole communicating with the receiving cavity 43, with a sealing plug 44 screwed onto the threaded hole. The hemispherical shock-resistant component 42 is hollow. Injecting a medium into the receiving cavity 43 through the threaded hole increases the overall weight of the seal 4, allowing the seal 4 to adjust its weight according to the fluid pressure. If the difference between the weight of the seal 4 and the buoyancy of the liquid is too large, the buoyancy generated by the fluid on the seal 4 will be relatively large. Thus, when the seal 4 closes, the closing speed is slow due to the large buoyancy. Therefore, water can be injected into the receiving cavity 43 through the threaded hole to increase the weight of the seal 4, reduce the buoyancy, and thus improve the closing speed of the seal 4. It can also extract the air from the receiving cavity 43 to create a vacuum, preventing the gas inside the hemisphere from expanding and causing overpressure when used with high-temperature steam.

[0033] Preferably, a valve seat 3 is fixedly connected to the end of the fluid channel 12 that seals with the sealing element 4. The sealing plate 41 of the sealing element 4 seals with the valve seat 3, and the outer diameter of the sealing plate 41 is adapted to the outer diameter of the valve seat 3. When the sealing plate 41 seals with the valve seat 3, the sealing plate 41 and the valve seat 3 are coaxial. By using the valve seat 3 to seal with the sealing element 4, the sealing effect is more stable.

[0034] Example 1: like Figures 1-4 As shown, the valve body 1 in this embodiment has a central valve chamber 11 and two fluid channels 12. The two fluid channels 12 are arranged opposite to each other on the left and right sides of the central valve hole, and the two fluid channels 12 are used for water outlet and water inlet, respectively. The sealing member 4 is sealed to the fluid channel 12 used for water inlet, and the sealing plate 41 of the sealing member 4 is sealed to the fluid channel 12 on the water inlet side.

[0035] Specifically, the hinge shaft is a circular shaft 5, with both ends of the circular shaft 5 passing through the valve body 1 and rotatably connected to the valve body 1 in a sealed manner. In this embodiment, mounting sleeves 7 are fitted at both ends of the circular shaft 5, and the circular shaft 5 is rotatably mounted in the central valve cavity 11 through the mounting sleeves 7. A sealing ring is installed between the circular shaft 5 and the mounting sleeves 7 to improve sealing and prevent water leakage.

[0036] like Figure 4 As shown, two connecting rods 8 are fixedly connected to the sealing element 4, and the two connecting rods 8 are fixedly connected to the sealing plate 41 of the sealing element 4. A movable collar 9 is fixedly connected to the end of each connecting rod 8 away from the sealing element 4, and the two movable collars 9 are rotatably sleeved on the circular shaft 5. The sealing element 4 is rotatably sleeved on the circular shaft 5 via the movable collars 9, and the sealing element 4 can rotate freely around the circular shaft 5. The rotation of the circular shaft 5 and the rotation of the sealing element 4 do not affect each other, allowing the sealing element 4 to follow the flow of fluid and achieve autonomous opening and closing, resulting in a faster response and improved closing speed.

[0037] In this embodiment, the movable collar 9 is a bearing. The inner ring of the bearing is fixedly connected to the circular shaft 5, and the connecting rod 8 is fixedly connected to the outer ring of the bearing. The movable collar 9, using a bearing, can achieve rotation while being fixed on the circular shaft 5, keeping the position of the movable collar 9 fixed, thereby ensuring the position of the seal 4 is fixed and preventing the seal 4 from shifting and losing its sealing effect.

[0038] In this embodiment, one end of a pressure rod 6 is fixed to the circular shaft 5, and the other end of the pressure rod 6 contacts the outer wall of the hemispherical anti-impact component 42. The pressure rod 6 is located between the two connecting rods 8, and the end of the pressure rod 6 away from the circular shaft 5 contacts the center of the hemispherical anti-impact component 42. By driving the circular shaft 5 to rotate by external force, the pressure rod 6 can be driven to rotate, thereby pressing the pressure rod 6 onto the sealing element 4 and forcibly driving the sealing element 4 to close, ensuring the sealing effect.

[0039] Working principle: The valve in this embodiment is suitable for pipelines that transport fluid in one direction. For example... Figure 1 As shown, the right side of the central valve chamber 11 is the inlet fluid channel 12, and the left side of the central valve chamber 11 is the outlet fluid channel 12. The seal 4 is sealed to the inlet fluid channel 12.

[0040] When the seal 4 needs to be closed, such as when the water pump on the delivery pipe connected to the fluid channel 12 on the inlet side stops supplying fluid, as the fluid pressure gradually decreases, the seal 4 flips downward under its own weight to seal with the valve seat 3. At this time, the seal 4 closes automatically following the pressure change of the fluid, responding quickly and closing faster, thus achieving a fast-closing function. To ensure that the seal 4 is completely closed, the circular shaft 5 can be rotated manually or electrically (such as by a servo motor) to press the pressure rod 6 against the seal 4. When the circular shaft 5 cannot be rotated, it indicates that the pressure rod 6 has pressed the seal 4 against the valve seat 3, and the seal 4 is tightly sealed against the valve seat 3, providing a safety function.

[0041] Alternatively, if the fluid pressure in the pipeline is high and the seal 4 cannot close by its own weight, the circular shaft 5 can be directly rotated to force the pressure rod 6 to rotate and drive the seal 4 to close, thus achieving forced closure of the seal 4. This ensures a good sealing effect by providing both autonomous and forced closure of the seal 4, improving closing speed and safety.

[0042] When the seal 4 is closed, the fluid in the fluid channel 12 on the water outlet side of the seal 4 will flow back. At this time, the backflow pressure impacts the hemispherical anti-impact component 42 of the seal 4, which can further tighten the seal. At the same time, the hemispherical design of the hemispherical anti-impact component 42 can effectively disperse the impact force and enhance the impact resistance of the center of the sealing plate 41, thereby effectively preventing the edge deformation of the sealing plate 41 and ensuring the sealing performance of the seal 4.

[0043] like Figure 3 As shown, when the seal 4 needs to be opened, the circular shaft 5 is first rotated in the opposite direction to lift the pressure rod 6 upward. The water pump on the delivery pipeline begins to deliver fluid. As the fluid pressure gradually increases, the seal 4 gradually opens in accordance with the change in fluid pressure, achieving autonomous opening. Because the seal 4 is suspended in the fluid as the fluid is continuously delivered, resistance is reduced and energy loss is minimized.

[0044] Example 2: like Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that a balance pipe 10 is fixedly connected to the outside of the valve body 1. One end of the balance pipe 10 is connected to the fluid channel 12 on the other side, and the other end of the balance pipe 10 is connected to the central valve chamber 11. That is, one end of the balance pipe 10 is connected to the central valve chamber 11, and the other end of the balance pipe 10 is connected to the fluid channel 12 on the water outlet side.

[0045] Working principle: As described in Example 1, when the seal 4 is closed, the fluid in the fluid channel 12 on the water outlet side of the seal 4 will backflow. At this time, the pressure on the left side of the seal 4 is relatively large. In order to reduce the backflow pressure, the pressure of the fluid channel 12 on the water outlet side and the central valve chamber can be balanced by the flow guide of the balance pipe 10, so as to counteract the backflow impact and keep the pressure on the left side of the seal 4 balanced and stable, thereby preventing the impact water from damaging the equipment.

[0046] Example 3: like Figure 6 As shown, the difference between this embodiment and Embodiment 2 is that this embodiment also includes a pressure relief device, which includes a pressure relief tank 13, a pressure relief pipeline 14, and a return water pipeline 16. The fluid channel 12, which is sealed to the sealing element 4, is connected to the pressure relief tank 13 via the pressure relief pipeline 14; that is, the pressure relief tank 13 is connected to the inlet-side fluid channel 12 via the pressure relief pipeline 14. A one-way pressure relief valve 15 is installed on the pressure relief pipeline 14. The central valve chamber 11 is connected to the pressure relief tank 13 via the return water pipeline 16, which is equipped with a delivery pump 18 and a switching valve 17.

[0047] The pressure relief tank 13 is equipped with a safety valve 19 and an exhaust valve 20.

[0048] Working principle: The pressure relief threshold of the one-way pressure relief valve 15 should be greater than the normal fluid transport pressure. That is, when the fluid channel 12 on the water inlet side is normally transporting fluid, it is impossible to relieve pressure by triggering the one-way pressure relief valve 15, thereby ensuring the stability of fluid transport.

[0049] However, during the opening or closing of the seal 4, the fluid pressure may suddenly increase in a short period of time. When the pressure reaches the threshold of the one-way pressure relief valve 15, the one-way pressure relief valve 15 will automatically open, and the fluid in the inlet side fluid channel 12 can flow into the pressure relief tank 13 for pressure relief, so as to avoid damage to the equipment by the high-pressure fluid. Until the pressure drops below the threshold of the one-way pressure relief valve 15, the one-way pressure relief valve 15 will automatically close, thereby ensuring the stability and safety of the internal pressure of the fluid channel 12.

[0050] The fluid stored in the pressure relief tank 13 is then transported to the central valve chamber 11 by the transfer pump 18 to avoid fluid waste. The pressure relief tank 13 releases pressure through the safety valve 19 and the exhaust valve 20 to prevent excessive internal pressure and ensure stable and safe internal pressure.

[0051] Example 4: like Figures 7-9As shown, the difference between this embodiment and Embodiment 1 is that the hinge shaft in this embodiment is a square shaft 21, with both ends of the square shaft 21 passing through the valve body 1 and being rotatably connected to the valve body 1 in a sealed manner. In this embodiment, both ends of the square shaft 21 are round shaft structures, which facilitates rotatable connection with the side walls of the valve body 1. Specifically, mounting sleeves 7 are fitted on the round shafts at both ends of the square shaft 21, and the square shaft 21 is rotatably mounted in the central valve cavity 11 through the mounting sleeves 7. A sealing ring is installed between the round shaft 5 and the mounting sleeve 7 to improve sealing and prevent water leakage.

[0052] Two connecting rods 8 are fixedly connected to the sealing element 4. A square collar 22 is fixedly connected to the end of each connecting rod 8 away from the sealing element 4. The two square collars 22 are fixedly sleeved on the square shaft 21.

[0053] To prevent the seal 4 from shifting, a positioning bolt 23 is threaded onto the side wall of the square collar 22. The positioning bolt 23 penetrates the side wall of the square collar 22 and abuts against the square shaft 21. The square collar 22 is fixed by the positioning bolt 23 pressing against the square shaft 21, thereby ensuring the position of the seal 4 is fixed and preventing the seal 4 from shifting and losing its sealing effect.

[0054] The seal 4 is fitted onto the square shaft 21 via a square collar 22, facilitating disassembly and maintenance. Since the seal 4 engages with the square shaft 21 via the square collar 22, rotation of the square shaft 21 directly drives the seal 4 to rotate, achieving forced opening and closing of the seal 4. Because the seal 4 in this embodiment undergoes a forced rotation action, a pressure rod 6 is not required to press the seal 4 in this embodiment.

[0055] Working principle: When the seal 4 needs to be closed, the square shaft 21 is driven to rotate, causing the seal 4 to flip downward and seal with the valve seat 3 at the end of the fluid channel 12 on the water inlet side, thereby achieving forced closure of the seal 4.

[0056] When the seal 4 needs to be opened, the square shaft 21 is driven to rotate in the opposite direction, causing the seal 4 to flip upwards and be forcibly opened.

[0057] Example 5: like Figure 10 As shown, the difference between this embodiment and embodiment 4 is that: in this embodiment, a three-way guide pipe 24 is fixedly connected to the outside of the valve body 1, and the first pipe of the three-way guide pipe 24 is connected to the central valve cavity 11. The fluid channel 12, which is sealed and cooperates with the sealing element 4, is connected to the second pipe of the three-way guide pipe 24, that is, connected to the fluid channel 12 on the water inlet side. The third pipe of the three-way guide pipe 24 is emptied, and a switch valve 17 is installed on the first, second, and third pipes of the three-way guide pipe 24.

[0058] Working principle: When the valve is closed, the pressure on the right side of the seal 4 is relatively small, while the pressure on the left side of the seal 4 is relatively large due to the backflow pressure of the fluid. The pressure difference between the left and right sides of the seal 4 makes it more difficult to open the seal 4.

[0059] Therefore, when the seal 4 needs to be opened, the switch valve 17 on the third pipeline is closed, and only the switch valves 17 on the first and second pipelines are opened, so that the fluid on the left side of the seal 4 enters the fluid channel 12 on the right side of the seal 4 through the first and second pipelines, thereby balancing the pressure on the left and right sides of the seal 4, making the seal 4 easier to open and requiring less effort, thus saving the energy required to open the valve.

[0060] After the valve is closed, the switch valve 17 on the second pipeline can be closed, and the switch valves 17 on the first and third pipelines can be opened to vent and relieve pressure.

[0061] Example 6: like Figure 11 As shown, the difference between this embodiment and embodiment 4 is that: an opening cam 26 is provided in the fluid channel 12 that seals with the sealing element 4. The opening cam 26 is rotatably connected to the valve body 1 through a rotating rod 27. When the eccentric end of the opening cam 26 contacts the sealing plate 41, it can drive the sealing element 4 to open. Specifically, the opening cam 26 is located on the side of the sealing plate 41 away from the hemispherical anti-impact component 42. One end of the opening cam 26 and the rotating rod 27 are fixedly connected, and the other end of the rotating rod 27 is rotatably connected to the valve body 1 through a mounting bushing 7. A sealing ring is installed between the rotating rod 27 and the mounting bushing 7 to improve the sealing performance and prevent water leakage.

[0062] Working principle: When the pressure difference between the two sides of the seal 4 is too large and it is difficult to open, the opening cam 26 can be rotated by rotating the rotating rod 27. The eccentric end of the opening cam 26 contacts the sealing plate 41, thereby pushing the seal 4 open the gap. Fluid can flow through the gap, so that the pressure on both sides of the seal can be quickly balanced. At this time, it will be easier to rotate the square shaft 21 and the seal will be easier to open.

[0063] Example 7: like Figure 12 , 13 As shown, the difference between this embodiment and embodiment 4 is that the valve body 1 in this embodiment has two central valve chambers 11 arranged axially and three fluid channels 12. The two central valve chambers 11 are connected on opposite sides by a fluid channel 12, and each of the two central valve chambers 11 has a fluid channel 12 on opposite sides. The seals 4 in the two central valve chambers 11 are respectively sealed to both ends of the fluid channel 12 located between the two central valve chambers 11.

[0064] In this embodiment, valve body 1 is suitable for pipelines that transport fluids in both directions. Two central valve chambers 11 are arranged side-by-side, and the middle fluid channel 12 of the three fluid channels 12 is used to balance the pressure on both sides of the seal 4. When the leftmost fluid channel 12 is used for water inlet, the rightmost fluid channel 12 is used for water outlet. Conversely, when the rightmost fluid channel 12 is used for water inlet, the leftmost fluid channel 12 is used for water outlet.

[0065] Both central valve chambers 11 are equipped with seals 4, and the two seals 4 are sealed to the valve seats 3 at both ends of the fluid passage 12 in the middle.

[0066] Furthermore, in this embodiment, a four-way guide pipe 25 is fixedly connected to the outside of the valve body 1. The first and second pipes of the four-way guide pipe 25 are respectively connected to the two central valve chambers 11, that is, the first pipe is connected to the left central valve chamber 11, and the second pipe is connected to the right central valve chamber 11. The third pipe of the four-way guide pipe 25 is emptied. The fourth pipe of the four-way guide pipe 25 is connected to the fluid channel 12 located between the two central valve chambers 11, and a switch valve 17 is installed on each of the four pipes of the four-way guide pipe 25.

[0067] Working principle: When fluid is transported through the conveying pipe on the left side of the valve, the leftmost fluid channel 12 is the inlet fluid channel 12, and the rightmost fluid channel 12 is the outlet fluid channel 12. When both seals 4 are closed, the fluid pressure in the inlet fluid channel 12 is low, while the backflow pressure of the fluid in the outlet fluid channel 12 is high. Therefore, due to the pressure difference, it is more difficult to open the seal 4 on the right side.

[0068] Therefore, when the seal 4 needs to be opened, the switch valves 17 of the second and fourth pipelines are opened, and the switch valves 17 of the first and third pipelines are closed, so that the fluid in the right central valve chamber 11 enters the middle fluid channel 12 through the second and fourth pipelines, so that the pressure on both sides of the right seal 4 is balanced. At this time, the right seal 4 can be easily opened, saving energy. Then the left seal 4 is opened to open the valve.

[0069] Conversely, when fluid is transported through the pipeline on the right side of the valve, the rightmost fluid channel 12 is the inlet fluid channel 12, and the leftmost fluid channel 12 is the outlet fluid channel 12. When both seals 4 are closed, it is more difficult to open the seal 4 on the left side due to the pressure difference.

[0070] Therefore, the switch valves 17 of the first and fourth pipelines are opened, while the switch valves 17 of the second and third pipelines are closed, allowing the fluid in the left central valve chamber 11 to enter the middle fluid channel 12 through the first and fourth pipelines, thus balancing the pressure on both sides of the left seal 4. At this point, the left seal 4 can be easily opened, saving energy. Then, the right seal 4 can be opened to open the valve.

[0071] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A suspended anti-impact energy-saving valve, comprising a valve body (1), wherein the valve body (1) is provided with a central valve cavity (11), and fluid channels (12) are provided on opposite sides of the central valve cavity (11), and a sealing element (4) is provided in the central valve cavity (11) to block one side of the fluid channel (12), characterized in that: The seal (4) is rotatably connected to the valve body (1) via a hinge shaft. The hinge shaft is located above the seal (4). The seal (4) includes a sealing plate (41) and a hemispherical anti-impact component (42). One side of the sealing plate (41) is sealed to the fluid channel (12), and the hemispherical anti-impact component (42) is fixed to the other side of the sealing plate (41).

2. The suspended anti-impact energy-saving valve according to claim 1, characterized in that: The hemispherical shock-resistant component (42) has a cavity (43) inside, and the sealing plate (41) has a threaded hole that connects to the cavity (43), and a sealing plug (44) is screwed into the threaded hole.

3. The suspended anti-impact energy-saving valve according to claim 1, characterized in that: A valve seat (3) is fixedly connected to the end of the fluid passage (12) that is sealed to the seal (4), and the sealing plate (41) of the seal (4) is sealed to the valve seat (3).

4. The suspended anti-impact energy-saving valve according to claim 1, characterized in that: The hinge shaft is a circular shaft (5). Both ends of the circular shaft (5) pass through the valve body (1) and are rotatably connected to the valve body. Two connecting rods (8) are fixedly connected to the sealing element (4). The ends of the two connecting rods (8) away from the sealing element (4) are fixedly connected to movable collars (9). The two movable collars (9) are rotatably sleeved on the circular shaft (5).

5. The suspended anti-impact energy-saving valve according to claim 4, characterized in that: The movable collar (9) is a bearing, with the inner ring of the bearing fixedly connected to the circular shaft (5), and the connecting rod (8) fixedly connected to the outer ring of the bearing.

6. The suspended anti-impact energy-saving valve according to claim 4, characterized in that: One end of the pressure rod (6) is fixed to the circular shaft (5), and the other end of the pressure rod (6) is in contact with the outer wall of the hemispherical anti-impact component (42).

7. The suspended anti-impact energy-saving valve according to claim 1, characterized in that: The valve body (1) is fixedly connected to a balance pipe (10). One end of the balance pipe (10) is connected to the fluid channel (12) on the other side, and the other end of the balance pipe (10) is connected to the central valve chamber (11).

8. The suspended anti-impact energy-saving valve according to claim 1, characterized in that: It also includes a pressure relief device, which includes a pressure relief tank (13), a pressure relief pipeline (14) and a return water pipeline (16). The fluid channel (12) that is sealed and matched with the sealing element (4) is connected to the pressure relief tank (13) through the pressure relief pipeline (14). A one-way pressure relief valve (15) is installed on the pressure relief pipeline (14). The central valve chamber (11) is connected to the pressure relief tank (13) through the return water pipeline (16). A delivery pump (18) and a switch valve (17) are installed on the return water pipeline (16).

9. The suspended anti-impact energy-saving valve according to claim 8, characterized in that: The pressure relief tank (13) is equipped with a safety valve (19) and an exhaust valve (20).

10. The suspended anti-impact energy-saving valve according to claim 1, characterized in that: The hinge shaft is a square shaft (21). The two ends of the square shaft (21) pass through the valve body (1) and are sealed and rotatably connected to the valve body (1). Two connecting rods (8) are fixedly connected to the sealing element (4). A square collar (22) is fixedly connected to the end of the two connecting rods (8) away from the sealing element (4). The two square collars (22) are fixedly sleeved on the square shaft (21).

11. The suspended anti-impact energy-saving valve according to claim 10, characterized in that: A positioning bolt (23) is threaded onto one side wall of the square collar. The positioning bolt (23) passes through the side wall of the square collar (22) and abuts against the square shaft (21).

12. The suspended anti-impact energy-saving valve according to claim 1, characterized in that: The valve body (1) is externally fixed with a three-way guide pipe (24). The first pipe of the three-way guide pipe (24) is connected to the central valve cavity (11). The fluid channel (12) that is sealed and matched with the sealing element (4) is connected to the second pipe of the three-way guide pipe (24). The third pipe of the three-way guide pipe (24) is emptied. A switch valve (17) is installed on the first, second and third pipes of the three-way guide pipe (24).

13. The suspended anti-impact energy-saving valve according to claim 10, characterized in that: An opening cam (26) is provided in the fluid channel (12) that is sealed to the sealing element (4). The opening cam is rotatably connected to the valve body (1) through the rotating rod (27). When the eccentric end of the opening cam (26) contacts the sealing plate (41), it can drive the sealing element (4) to open.

14. The suspended anti-impact energy-saving valve according to any one of claims 1 to 13, characterized in that: The valve body (1) has a central valve chamber (11) and two fluid channels (12). The two fluid channels (12) are arranged opposite to each other on both sides of the central valve chamber. The two fluid channels (12) are used for water inlet and water outlet respectively. The sealing element (4) is sealed to the fluid channel (12) used for water inlet.

15. The suspended anti-impact energy-saving valve according to any one of claims 1-3 and 7-11, characterized in that: The valve body (1) is provided with two central valve chambers (11) arranged along the axial direction and three fluid channels (12). The two central valve chambers (11) are connected on opposite sides through a fluid channel (12), and the two central valve chambers (11) are respectively provided with a fluid channel (12) on opposite sides. The seals (4) in the two central valve chambers (11) are respectively sealed and fitted with the two ends of the fluid channel (12) located between the two central valve chambers (11).

16. The suspended anti-impact energy-saving valve according to claim 15, characterized in that: The valve body (1) is fixedly connected to a four-way guide pipe (25). The first and second pipes of the four-way guide pipe (25) are connected to the two central valve chambers (11) respectively. The third pipe of the four-way guide pipe (25) is emptied. The fourth pipe of the four-way guide pipe (25) is connected to the fluid channel (12) located between the two central valve chambers (11). A switch valve (17) is installed on each of the four pipes of the four-way guide pipe (25).

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