Ball valve capable of reducing valve opening and closing noise

Abstract

The utility model relates to the technical field of ball valves, and discloses a ball valve capable of reducing valve opening and closing noise, which comprises a right valve body, a valve rod is rotatably connected in the right valve body, a ball body is fixedly connected on the lower surface of the valve rod, a left valve body is arranged on the side wall of the right valve body, and a sealing assembly is arranged in the right valve body. A fixing assembly is arranged on the side wall of the left valve body. The sealing assembly comprises a sealing seat and a sealing ring, the side wall of the sealing seat is fixedly connected to the interior of the right valve body, the side wall of the sealing ring is slidably connected to the interior of the sealing seat, and a mounting seat is fixedly connected to the interior of the sealing seat. According to the ball valve, the ball body extrudes the sealing ring to drive the rotating plate to rotate and compress the first spring, the sealing ring is tightly attached to the side wall of the ball body all the time, collision noise between the ball body and the sealing ring is reduced, meanwhile, the flow guide blades can guide fluid to flow more stably in the valve body, and noise is further reduced; through the structure, the noise reduction effect of the valve is improved.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a ball valve that reduces valve opening and closing noise. Background Technology

[0002] In many scenarios of industrial production and daily life, valves, as key components for controlling fluid transport, directly affect the operational stability and noise level of the system. Ball valves, in particular, are widely used in various pipeline systems due to their simple structure, convenient operation, and good sealing performance. However, with increasingly stringent requirements for working environments and the pursuit of equipment operating efficiency and noise reduction, the noise problem generated by ball valves during opening and closing has gradually become prominent and urgently needs to be addressed.

[0003] Existing ball valves primarily focus on achieving basic fluid on / off control functions. Their mechanical structure is usually quite conventional, with the valve stem directly connected to the ball. The valve stem is rotated manually or electrically, which in turn rotates the ball to open or close the valve. For sealing, they mostly employ ordinary static sealing structures, such as rubber sealing rings directly mounted on the valve seat, utilizing the tight contact between the ball and the sealing ring to achieve a seal.

[0004] Existing ball valves have a large pressure difference and high fluid velocity on both sides during opening and closing. When the fluid passes through the ball valve channel at high speed, there is high noise and strong vibration, which causes wear and damage to the valve body and ball. At the same time, the high noise and strong vibration during the opening and closing process of the ball valve also cause damage to the valve and pose a great threat to the health of the operators. Therefore, a ball valve with reduced opening and closing noise is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a ball valve that reduces valve opening and closing noise, aiming to improve the problem in the prior art where the large pressure difference on both sides of the valve during the opening and closing process results in high noise and strong vibration, which can cause damage to the valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A ball valve for reducing valve opening and closing noise includes a right valve body, a valve stem rotatably connected inside the right valve body, a ball fixedly connected to the lower surface of the valve stem, a left valve body disposed on the side wall of the right valve body, a sealing assembly disposed inside the right valve body, and a fixing assembly disposed on the side wall of the left valve body.

[0008] The sealing assembly includes a sealing seat and a sealing ring. The side wall of the sealing seat is fixedly connected to the inside of the right valve body. The side wall of the sealing ring is slidably connected to the inside of the sealing seat. An installation seat is fixedly connected to the inside of the sealing seat. A fixing rod is fixedly connected to the inside of the installation seat. A slider is slidably connected to the side wall of the fixing rod. A spring is sleeved on the side wall of the fixing rod. A rotating plate is rotatably connected to the side wall of the slider. One end of the rotating plate is rotatably connected to the side wall of the sealing ring. The side wall of the sealing ring is attached to the side wall of the ball.

[0009] As a further description of the above technical solution:

[0010] The fixing component includes a first connecting ring, a positioning block, and a second connecting ring. The inner wall of the first connecting ring is fixedly connected to the side wall of the left valve body, the second connecting ring is fixedly connected to the side wall of the right valve body, the side wall of the positioning block is fixedly connected to one side wall of the connecting ring, and the side wall of the positioning block is slidably connected inside the second connecting ring.

[0011] As a further description of the above technical solution:

[0012] One end of the spring is fixedly connected to the side wall of the mounting base, and the other end of the spring is fixedly connected to the side wall of the slider. A guide vane is fixedly connected inside the right valve body.

[0013] As a further description of the above technical solution:

[0014] A lower sleeve is provided on one side wall of the connecting ring, and an upper sleeve is rotatably connected to the side wall of the lower sleeve. The side walls of the first connecting ring and the second connecting ring are slidably connected inside the lower sleeve and the upper sleeve.

[0015] As a further description of the above technical solution:

[0016] The upper sleeve sidewall is fixedly connected to a locking block, the lower sleeve sidewall is fixedly connected to a fixing sleeve, and one sidewall of the locking block is slidably connected inside the fixing sleeve.

[0017] As a further description of the above technical solution:

[0018] A connecting rod is slidably connected inside the fixed sleeve. A pull plate is fixedly connected to one end of the connecting rod, and a second locking block is fixedly connected to the other end of the connecting rod. The side wall of the second locking block is slidably connected inside the first locking block.

[0019] As a further description of the above technical solution:

[0020] A fixing ring is fixedly connected to the side wall of the connecting rod, and a spring is sleeved on the side wall of the connecting rod.

[0021] As a further description of the above technical solution:

[0022] One end of the second spring is fixedly connected inside the fixed sleeve, and the other end of the second spring is fixedly connected to the side wall of the fixed ring.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the ball compresses the sealing ring, causing the rotating plate to rotate and compress the first spring. The slider and the rotating plate act in opposite directions on the sealing ring, ensuring that the sealing ring is always tightly fitted to the side wall of the ball. This enhances the sealing effect while the buffering effect of the first spring reduces the collision noise between the ball and the sealing ring. At the same time, the guide vane guides the fluid to flow more smoothly in the valve body, reducing the impact of the fluid on the ball and further reducing noise. This solves the problem that some ball valves have a large pressure difference on both sides during the opening and closing process, resulting in high noise and strong vibration. The high noise and strong vibration during the opening and closing process of ball valves can also cause damage to the valve. The above structure improves the noise reduction effect of the valve.

[0025] 2. In this utility model, by pulling the pull plate outward, the connecting rod and the second locking block move, causing the second locking block to disengage from the first locking block. At this time, the upper locking sleeve can be rotated to release the fixing of the first connecting ring and the second connecting ring. Then, by separating the first connecting ring and the second connecting ring, the valve body can be disassembled, which is convenient for disassembly and maintenance. Attached Figure Description

[0026] Figure 1 A three-dimensional schematic diagram of a ball valve for reducing valve opening and closing noise proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the right valve body of a ball valve for reducing valve opening and closing noise, as proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the structure of a sealing seat for a ball valve that reduces valve opening and closing noise, as proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the left valve body of a ball valve for reducing valve opening and closing noise according to the present invention.

[0030] Figure 5 This is a schematic diagram of the lower ferrule of a ball valve for reducing valve opening and closing noise, as proposed in this utility model.

[0031] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0032] Legend:

[0033] 1. Right valve body; 2. Valve stem; 3. Ball; 4. Sealing seat; 5. Sealing ring; 6. Guide vane; 7. Mounting seat; 8. Fixing rod; 9. Sliding block; 10. Spring 1; 11. Rotating plate; 12. Left valve body; 13. Connecting ring 1; 14. Positioning block; 15. Connecting ring 2; 16. Lower ferrule; 17. Upper ferrule; 18. Locking block 1; 19. Fixing sleeve; 20. Connecting rod; 21. Pulling plate; 22. Fixing ring; 23. Spring 2; 24. Locking block 2. Detailed Implementation

[0034] 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.

[0035] Reference Figures 1-3 This utility model provides an embodiment of a ball valve for reducing valve opening and closing noise, comprising a right valve body 1, a valve stem 2 rotatably connected inside the right valve body 1, a ball 3 fixedly connected to the lower surface of the valve stem 2, a left valve body 12 disposed on the side wall of the right valve body 1, a sealing assembly disposed inside the right valve body 1, and a fixing assembly disposed on the side wall of the left valve body 12; the sealing assembly includes a sealing seat 4 and a sealing ring 5, the side wall of the sealing seat 4 being fixedly connected inside the right valve body 1, and the side wall of the sealing ring 5 being slidably connected inside the sealing seat 4; when the valve is closed, the ball 3 compresses the sealing ring 5, and the sliding characteristics of the sealing ring 5 within the sealing seat 4 can adapt to the compressing action of the ball 3; a mounting seat 7 is fixedly connected inside the sealing seat 4, and the mounting seat 7 is fixedly connected to... There is a fixed rod 8, and a slider 9 is slidably connected to the side wall of the fixed rod 8. The fixed rod 8 serves to guide the slider 9 and ensure that the slider 9 can only slide along the axial direction of the fixed rod 8. A spring 10 is sleeved on the side wall of the fixed rod 8. A rotating plate 11 is rotatably connected to the side wall of the slider 9. One end of the rotating plate 11 is rotatably connected to the side wall of the sealing ring 5. The side wall of the sealing ring 5 is attached to the side wall of the ball 3. One end of the spring 10 is fixedly connected to the side wall of the mounting base 7, and the other end of the spring 10 is fixedly connected to the side wall of the slider 9. The buffering characteristics of the spring 10 can absorb part of the impact force at the moment of contact between the ball 3 and the sealing ring 5, which significantly reduces the collision noise between the ball 3 and the sealing ring 5. A guide vane 6 is fixedly connected inside the right valve body 1.

[0036] When the valve is closed, as the ball 3 rotates to the closed position, it moves towards the sealing ring 5 and applies pressure to it. When the sealing ring 5 is compressed by the ball 3, it slides inwards towards the sealing seat 4. This sliding motion of the sealing ring 5 drives the rotating plate 11 to rotate, converting the linear displacement of the sealing ring 5 into a pushing force on the slider 9. When the rotating plate 11 pushes the slider 9 to slide on the fixed rod 8, it compresses the spring 10. During compression, the spring 10 stores elastic potential energy. The elastic force generated by the compression of the spring 10 acts in the opposite direction on the sealing ring 5 through the slider 9 and the rotating plate 11. This ensures that the sealing ring 5 remains tightly fitted against the side wall of the ball 3, greatly enhancing the sealing effect and effectively preventing fluid leakage from the contact point between the ball 3 and the sealing ring 5, ensuring the valve's tightness when closed. Furthermore, the buffering effect of the spring 10 effectively reduces the impact on the ball's performance. The collision noise between body 3 and sealing ring 5 is mitigated by the presence of spring 10, which softens the collision process and reduces noise generation. During valve opening, as ball 3 gradually moves away from sealing ring 5, spring 10 releases its stored elastic potential energy and gradually returns to its original state. During this return process, the elastic force generated by spring 10 pushes slider 9 and rotating plate 11, causing sealing ring 5 to slowly reset. This slow reset of sealing ring 5 avoids friction and collision noise caused by rapid reset. The guide vane 6 inside the right valve body 1 guides the fluid to flow more smoothly within the valve body. When the fluid flows through the valve, the guide vane 6 changes the flow direction and velocity distribution of the fluid, allowing the fluid to pass through the valve in a more orderly manner. This reduces the impact of the fluid on ball 3, preventing vibration caused by the fluid impacting ball 3, thereby reducing noise and further ensuring the normal operation and noise reduction effect of the valve.

[0037] Reference Figures 4-6The fixing components include a first connecting ring 13, a positioning block 14, and a second connecting ring 15. The inner wall of the first connecting ring 13 is fixedly connected to the side wall of the left valve body 12, the second connecting ring 15 is fixedly connected to the side wall of the right valve body 1, and the side wall of the positioning block 14 is fixedly connected to the side wall of the first connecting ring 13. The side wall of the positioning block 14 is slidably connected to the inside of the second connecting ring 15. The shape and size of the positioning block 14 match the internal structure of the second connecting ring 15 of the right valve body 1, ensuring the accurate relative position of the left valve body 12 and the right valve body 1, greatly improving assembly efficiency. A lower retaining sleeve 16 is provided on the side wall of the first connecting ring 13, and an upper retaining sleeve 17 is rotatably connected to the side wall of the lower retaining sleeve 16. The lower retaining sleeve 16 and the upper retaining sleeve 17 are semi-circular in shape, which can tightly fit the outer peripheral walls of the first connecting ring 13 and the second connecting ring 15. The side walls of the first connecting ring 13 and the second connecting ring 15 are slidably connected to the lower retaining sleeve 16 and the second connecting ring 15. Inside the upper sleeve 17, the lower sleeve 16 cooperates with the upper sleeve 17 to effectively resist loosening of the connection caused by external forces such as fluid impact and mechanical vibration, thereby reducing noise caused by unstable connection. The side wall of the upper sleeve 17 is fixedly connected to a locking block 18, and the side wall of the lower sleeve 16 is fixedly connected to a fixing sleeve 19. The side wall of the locking block 18 is slidably connected inside the fixing sleeve 19. The fixing sleeve 19 is slidably connected to a connecting rod 20. One end of the connecting rod 20 is fixedly connected to a pull plate 21, and the other end of the connecting rod 20 is fixedly connected to a locking block 24. The side wall of the locking block 24 is slidably connected inside the locking block 18. The side wall of the connecting rod 20 is fixedly connected to a fixing ring 22, and the side wall of the connecting rod 20 is fitted with a spring 23. One end of the spring 23 is fixedly connected inside the fixing sleeve 19, and the other end of the spring 23 is fixedly connected to the side wall of the fixing ring 22.

[0038] When the left valve body 12 is assembled with the right valve body 1, the positioning block 14 slides into the connecting ring 15 of the right valve body 1, which plays a preliminary positioning role, enabling quick and accurate positioning and avoiding connection deviation. Then, the lower retaining sleeve 16 and the upper retaining sleeve 17 are fitted onto the connecting ring 13 and the connecting ring 15. During the installation process, the first retaining block 18 gradually slides into the fixing sleeve 19 of the lower retaining sleeve 16. During this sliding process, the first retaining block 18 will squeeze the second retaining block 24 and slide into the fixing sleeve 19, thereby squeezing the second spring 23. When the first retaining block 18 is fully inserted into the fixing sleeve 19, the second spring 23, which has stored elastic potential energy due to previous compression, rebounds and pushes the second retaining block 24 into the first retaining block 18, realizing the locking of the retaining sleeve. This allows the lower retaining sleeve 16 and the upper retaining sleeve 17 to fix the connecting ring 13 and the connecting ring 15. 5. This further stabilizes the connection between the left valve body 12 and the right valve body 1, effectively preventing the valve body connection from loosening due to external forces such as vibration and fluid impact during the operation of the ball valve. When the ball valve needs to be disassembled for maintenance, the pull plate 21 is pulled outward, causing the connecting rod 20 to move. Since the second locking block 24 is fixedly connected to the connecting rod 20, the second locking block 24 also moves accordingly, causing the second locking block 24 to disengage from the first locking block 18. At this time, the locking state between the upper locking sleeve 17 and the lower locking sleeve 16 is released. The operator can rotate the upper locking sleeve 17 to separate it from the lower locking sleeve 16, thereby releasing the fixation of the first connecting ring 13 and the second connecting ring 15. Finally, by separating the first connecting ring 13 and the second connecting ring 15, the valve body can be disassembled, facilitating the inspection, repair, or replacement of various components inside the ball valve, greatly improving the maintenance efficiency of the ball valve.

[0039] Working principle: When the valve is closed, the ball 3 compresses the sealing ring 5. At this time, the sealing ring 5 slides into the sealing seat 4 under force, driving the rotating plate 11 to rotate. The rotation of the rotating plate 11 pushes the slider 9 to slide on the fixed rod 8, thereby compressing the spring 10. The elastic force generated by the compression of the spring 10 acts in the opposite direction on the sealing ring 5 through the slider 9 and the rotating plate 11, so that the sealing ring 5 is always tightly attached to the side wall of the ball 3, enhancing the sealing effect. At the same time, the buffering effect of the spring 10 effectively reduces the collision noise between the ball 3 and the sealing ring 5. During the valve opening process, as the ball 3 gradually moves away from the sealing ring 5, the spring 10 gradually returns to its original shape, pushing the slider 9 and the rotating plate 11, so that the sealing ring 5 slowly resets, which also reduces the friction and collision noise during the reset process. The guide vane 6 fixedly connected inside the right valve body 1 can guide the fluid to flow more smoothly in the valve body, reducing the impact of the fluid on the ball 3 and further reducing noise. The left valve body 12 passes through... The connecting ring 13 is connected to the right valve body 1. The positioning block 14 on the connecting ring 13 slides into the connecting ring 15 on the right valve body 1, which plays a preliminary positioning role. The lower sleeve 16 and the upper sleeve 17 fit the connecting ring 13 and the connecting ring 15. The locking block 18 on the upper sleeve 17 slides into the fixing sleeve 19 of the lower sleeve 16. During the sliding process, the locking block 18 will squeeze the locking block 24, causing it to slide into the fixing sleeve 19, thereby squeezing the spring 23. When the locking block 18... When fully inserted into the fixed sleeve 19, the second spring 23 rebounds and pushes the second locking block 24 into the first locking block 18 to lock the sleeve. When disassembly is required, pull the pull plate 21 outward to move the connecting rod 20 and the second locking block 24, so that the second locking block 24 disengages from the first locking block 18. At this time, the upper sleeve 17 can be rotated to release the fixation of the first connecting ring 13 and the second connecting ring 15. Then, by separating the first connecting ring 13 and the second connecting ring 15, the valve body can be disassembled.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ball valve for reducing valve opening and closing noise, comprising a right valve body (1), characterized in that: The right valve body (1) is rotatably connected to a valve stem (2), and a ball (3) is fixedly connected to the lower surface of the valve stem (2). The right valve body (1) is provided with a left valve body (12) on its side wall. The right valve body (1) is provided with a sealing assembly inside, and the left valve body (12) is provided with a fixing assembly on its side wall. The sealing assembly includes a sealing seat (4) and a sealing ring (5). The side wall of the sealing seat (4) is fixedly connected to the inside of the right valve body (1). The side wall of the sealing ring (5) is slidably connected to the inside of the sealing seat (4). An installation seat (7) is fixedly connected inside the sealing seat (4). A fixing rod (8) is fixedly connected inside the installation seat (7). A slider (9) is slidably connected to the side wall of the fixing rod (8). A spring (10) is sleeved on the side wall of the fixing rod (8). A rotating plate (11) is rotatably connected to the side wall of the slider (9). One end of the rotating plate (11) is rotatably connected to the side wall of the sealing ring (5). The side wall of the sealing ring (5) is attached to the side wall of the ball (3).

2. The ball valve for reducing valve opening and closing noise according to claim 1, characterized in that: The fixing assembly includes a first connecting ring (13), a positioning block (14), and a second connecting ring (15). The inner wall of the first connecting ring (13) is fixedly connected to the side wall of the left valve body (12). The second connecting ring (15) is fixedly connected to the side wall of the right valve body (1). The side wall of the positioning block (14) is fixedly connected to the side wall of the first connecting ring (13). The side wall of the positioning block (14) is slidably connected inside the second connecting ring (15).

3. A ball valve for reducing valve opening and closing noise according to claim 1, characterized in that: One end of the spring (10) is fixedly connected to the side wall of the mounting base (7), and the other end of the spring (10) is fixedly connected to the side wall of the slider (9). A guide vane (6) is fixedly connected inside the right valve body (1).

4. A ball valve for reducing valve opening and closing noise according to claim 2, characterized in that: The side wall of the first connecting ring (13) is provided with a lower sleeve (16), and the side wall of the lower sleeve (16) is rotatably connected to an upper sleeve (17). The side walls of the first connecting ring (13) and the second connecting ring (15) are slidably connected inside the lower sleeve (16) and the upper sleeve (17).

5. A ball valve for reducing valve opening and closing noise according to claim 4, characterized in that: The upper sleeve (17) is fixedly connected to a first locking block (18) on its side wall, and the lower sleeve (16) is fixedly connected to a fixing sleeve (19) on its side wall. The side wall of the first locking block (18) is slidably connected inside the fixing sleeve (19).

6. A ball valve for reducing valve opening and closing noise according to claim 5, characterized in that: The fixed sleeve (19) is slidably connected to a connecting rod (20). One end of the connecting rod (20) is fixedly connected to a pull plate (21), and the other end of the connecting rod (20) is fixedly connected to a second locking block (24). The side wall of the second locking block (24) is slidably connected to the inside of the first locking block (18).

7. A ball valve for reducing valve opening and closing noise according to claim 6, characterized in that: A fixing ring (22) is fixedly connected to the side wall of the connecting rod (20), and a spring (23) is sleeved on the side wall of the connecting rod (20).

8. A ball valve for reducing valve opening and closing noise according to claim 7, characterized in that: One end of the second spring (23) is fixedly connected inside the fixed sleeve (19), and the other end of the second spring (23) is fixedly connected to the side wall of the fixed ring (22).

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