Noise reduction, shock resistance and cavitation prevention adjusting ball valve

Abstract

This invention discloses a noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve. The invention relates to the field of ball valve technology. A flange block near the composite component connects to a pipeline. Liquid flows from one side of the composite component to the other side of the valve body, forming a liquid flow path. During the process of fixing the flange block to the pipeline, the composite component enters the pipeline along with the pipeline, fitting against the inner wall of the connecting pipeline. When the liquid flows, it enters the valve body from the composite component. A drive motor controls the connecting shaft to rotate, which in turn drives the valve ball to rotate, causing the valve ball to rotate inside the valve body, thereby achieving the function of closing the liquid flow. During the rotation of the valve ball, it rubs against the friction component, cleaning the surface of the valve ball to reduce impurity accumulation, prevent gaps between the valve ball and the inner wall of the valve body, reduce the probability of equipment leakage, and thus extend the service life of the equipment.

Description

Technical Field

[0001] This invention relates to the field of ball valve technology, specifically to a noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve. Background Technology

[0002] The linear flow characteristic of a regulating ball valve means that the flow rate of the ball valve is linearly related to the opening degree of the ball. The flow characteristic of an ordinary ball valve is non-linear. If it is used as a regulating valve, the flow rate of the ball valve at different opening degrees needs to be changed by changing the valve seat structure, so as to achieve the linear flow characteristic of the regulating ball valve.

[0003] Chinese patent CN217030123U discloses an anti-vibration soft-seal ball valve. By using a No. 1 spring to support the support plate, the valve absorbs and buffers vibrations through its own elasticity, reducing the impact of vibrations on the soft-seal ball valve body and reducing the risk of loosening between the soft-seal ball valve body and the pipeline caused by vibrations, which could lead to media leakage and losses. However, it is not very efficient in reducing liquid flow rate, reducing pipeline vibration, and reducing valve body noise and cavitation. Secondly, after a long period of operation, impurities tend to accumulate on the surface of the valve ball, affecting the internal sealing performance of the valve body and causing liquid leakage inside the valve body, which affects the service life of the equipment. Therefore, a new design was carried out to address these issues. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides the following technical solution: a noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve, comprising a valve body, a connecting shaft rotatably connected to the outer side of the valve body, a drive motor fixedly connected to the top of the connecting shaft, and a valve ball fixedly connected to the bottom of the connecting shaft. When liquid flows, the liquid enters the interior of the valve body from the composite component. The drive motor controls the connecting shaft to rotate, causing the valve ball to rotate within the valve body, thereby closing the liquid flow. The bottom of the valve ball is rotatably connected to the inner wall of the valve body, and a friction assembly is fixedly connected to the inner wall of the valve body near the valve ball. The valve ball rotates... During the process, the valve ball rubs against the friction components to clean its surface, thereby reducing the accumulation of impurities, preventing gaps between the valve ball and the inner wall of the valve body, reducing the probability of equipment leakage, and thus extending the service life of the equipment. Flange blocks are fixedly connected to both ends of the valve body. The flange block near the composite component is connected to the pipeline. Liquid flows from one side of the composite component to the other side of the valve body, forming the flow direction of the liquid. A positioning component is fixedly connected to the outside of the flange block. During the process of fixing the flange block to the pipeline, the composite component enters the pipeline along with the pipeline and fits against the inner wall of the pipeline. A composite component is fixedly connected to one side of the flange block. The friction assembly includes a fixed frame, the outer side of which is fixedly connected to the inner wall of the valve body. A connecting shaft is fixedly connected to the outer side of the fixed frame, and an arc-shaped bracket is fixedly connected to one side of the connecting shaft. A rubber block is fixedly connected to the outer side of the arc-shaped bracket. When the connecting shaft controls the valve ball to rotate, the surface of the valve ball rubs against the surface of the rubber block, causing the rubber block to clean the surface of the valve ball. This reduces the adsorption of impurities, prevents impurities from clumping, and prevents gaps between the valve ball and the inner wall of the valve body, thereby preventing liquid leakage, avoiding affecting the service life of the equipment, and ensuring the normal operation of the equipment.

[0005] Preferably, the positioning assembly includes a flange outer sleeve, the inner side of which is fixedly connected to the outer side of the flange block. An external frame is fixedly connected to one side of the outer side of the flange outer sleeve. A telescopic rod is fixedly connected to the edge of the outer side of the external frame. The telescopic rod is fitted with a first spring and mounted on the positioning frame. The telescopic rod supports the external frame. When the flow of liquid inside the valve body causes equipment vibration, the first spring causes it to contract, thereby playing a role in shock absorption and buffering. The outer side of the telescopic rod is fitted with a first spring. An auxiliary rod is fixedly connected to the middle of the outer side of the external frame. When liquid flows inside the valve body, especially under high pressure differential, high flow velocity, or at the moment of valve opening and closing, fluid pulsation and impact will cause valve body vibration. This auxiliary rod absorbs this vibration energy, prevents vibration from being transmitted to the pipe and support, and prevents resonance and fatigue damage. The auxiliary rod guides the sliding of the telescopic rod, improving the stability of the component during operation. The positioning frame is fixedly connected to the outer side of the auxiliary rod and the telescopic rod away from the external frame.

[0006] Preferably, the composite component includes a first plate, with a soft rubber membrane fixedly connected to the outer side of the first plate away from the flange block. A second plate is fixedly connected to the outer side of the soft rubber membrane. When the pipe moves towards the flange block, and the second plate comes into contact with the pipe, the second plate drives the soft rubber membrane to move towards the first plate. The second plate compresses the elastic rod, thereby playing a shock-absorbing and buffering role, reducing vibration generated during pipe connection, reducing wear between components, and thus extending the service life of the components. An elastic rod is fixedly connected to the outer side of the second plate, and the outer side of the elastic rod is fixedly connected to the outer side of the flange block. A guide tube is fixedly connected to the outer side of the first plate near the second plate. The soft rubber membrane increases the protective effect of the pipe interface and improves the leak-proof effect. The guide tube is wider on the side near the flange block and narrower on the side away from the flange block. When the equipment is connected to the pipe, the guide tube enters the pipe to guide the liquid flow, causing the inlet to misalign with the pipe interface, reducing the probability of leakage at the interface, thereby ensuring the normal operation of the equipment.

[0007] Preferably, a limiting component is fixedly connected to the outer side of the guide tube. After the limiting component enters the pipe, it adheres to the inner wall of the pipe. When the liquid flows, the liquid washes over the limiting component, causing it to slide onto the guide tube and engage with it. This engagement reduces liquid leakage and guides the liquid flow. A plastic film is fixedly connected to the outer side of the limiting component near the guide tube. The plastic film is positioned between the limiting component and the guide tube. When the limiting component moves towards the guide tube, the plastic film prevents liquid from flowing into dead corners of the component, thus preventing leakage and reducing liquid ingress into dead corners and reducing liquid corrosion. This extends the service life of the equipment and ensures its normal operation. The outer side of the plastic film is fixedly connected to the outer side of the guide tube.

[0008] Preferably, a triangular block is fixedly connected to the inner wall of the guide tube away from the limiting component. The triangular block can be made of a material such as silicone. When the limiting component slides towards the inside of the guide tube, the outer side of the limiting component rubs against the triangular block, thereby limiting the movement space of the component. An arc-shaped groove is formed on the outer side of the triangular block away from the inner wall of the guide tube, so that the triangular block fits against the outer side of the limiting component, preventing the component from shaking due to liquid flow and improving the stability of the component during the flow process. The arc-shaped groove adopts a narrow structure and is evenly distributed on the contact surface of the triangular block, thereby increasing the friction performance on the component surface, improving the friction effect on the component, and improving the stability effect on the component.

[0009] Preferably, a manifold is fixedly connected to the side of the first plate away from the second plate. The manifold has a structure that is wider at the front and narrower at the back, which plays a role in guiding the flowing liquid. A flow-disrupting rod is fixedly connected to the inner wall of the manifold. When the liquid flows inside the manifold, it comes into contact with the surface of the flow-disrupting rod, thereby breaking bubbles in advance, avoiding concentrated explosion, dispersing impact energy, weakening the vibration source, dispersing the collapse energy to multiple points, and significantly reducing the amplitude, so that it cannot form a continuous excitation force, and preventing pipe resonance caused by cavitation. Combined with the conical structure, it stabilizes the flow field. A multi-stage component is fixedly connected to the side of the manifold away from the first plate.

[0010] Preferably, the limiting component includes a limiting shell, a second spring fixedly connected to the inner side of the limiting shell, and a limiting support rod fixedly connected to one side of the outer side of the second spring. When liquid flows from the front of the limiting plate, the liquid washes over the limiting plate, and the limiting plate is subjected to the pressure of the liquid washing over it, causing the limiting plate to drive the limiting support rod to slide towards the limiting shell. The limiting support rod compresses and contracts the second spring, thereby absorbing impact energy, preventing rigid collisions, and controlling the sliding speed. A limiting plate is fixedly connected to the outer side of the limiting support rod away from the second spring. The limiting plate fits into the outer side of the guide tube to achieve a smooth fit. The limiting plate and the guide tube fit into each other inside the pipe, thereby forming a "double sealing pair", blocking the core leakage channel, achieving a "pressure self-tightening effect", becoming tighter with each flush, eliminating dynamic leakage, eliminating "reciprocating vibration gap", and preventing alternating leakage.

[0011] Preferably, a tapered tube is fixedly connected to the inner side of the limiting plate. Liquid flows from the limiting plate into the tapered tube, and the liquid comes into contact with the semi-circular groove, thereby slowing down the liquid flow rate. The semi-circular groove forces the high-speed fluid to generate a large number of tiny eddies, breaking up the large-scale turbulent structure that would normally generate high-frequency noise, thus reducing the intensity of fluid noise and suppressing the amplitude of equipment vibration. The groove changes the natural frequency of the fluid in the tube, destroying the conditions for resonance between the fluid and the valve body, and preventing noise from being amplified due to resonance. Secondly, it plays a role in preventing cavitation. The tapered tube has a semi-circular groove on its inner side, which can break the large bubbles generated by cavitation into tiny bubbles. These tiny bubbles release less energy when they collapse, significantly reducing the erosion damage to the equipment.

[0012] Preferably, the multi-stage component includes a multi-stage frame, with a multi-stage sleeve fixedly connected to the side of the multi-stage frame near the turbulence rod. After the liquid enters the manifold, it flows into the multi-stage sleeve, dispersing the total pressure difference generated by the ball valve throttling into multiple small pressure differences. This avoids the sudden pressure drop caused by single-stage throttling, ensuring that the fluid pressure is always higher than the saturated vapor pressure of the medium throughout the process. This suppresses bubble formation at the source and dissipates the liquid kinetic energy in stages. Part of the kinetic energy is consumed through throttling and eddy friction. A circular cut is provided in the middle of the outer side of the multi-stage frame, which significantly reduces the flow velocity of the fluid flowing out of the circular cut, weakening the impact noise of the high-speed jet on the downstream pipe and valve body, as well as the flow velocity of the multi-stage buffer fluid.

[0013] This invention provides a regulating ball valve that reduces noise, reduces vibration, and prevents cavitation. It has the following beneficial effects: 1. This noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve features a triangular block made of materials such as silicone. When the limiting component slides inward into the guide tube, the outer side of the limiting component rubs against the triangular block, thereby restricting the component's movement space. This allows the triangular block to fit snugly against the outer side of the limiting component, preventing liquid flow from causing component vibration and improving the stability of the component during flow. The arc-shaped groove has a narrow structure and is evenly distributed on the contact surface of the triangular block, thereby increasing the friction performance on the component surface, improving the friction effect on the component, and enhancing the stability of the component.

[0014] II. This noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve features a manifold with a wide front and narrow rear structure, which guides the flowing liquid in a concentrated manner. When the liquid flows inside the manifold, it contacts the surface of the turbulence rod, thereby breaking bubbles in advance, avoiding concentrated explosions, dispersing impact energy, weakening the vibration source, and dispersing the collapse energy to multiple points with a significantly reduced amplitude, preventing the formation of a continuous excitation force, and eliminating pipeline resonance caused by cavitation. Combined with the conical structure, it stabilizes the flow field.

[0015] Third, this noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve, when liquid flows from in front of the limiting plate, the liquid washes against the limiting plate. The limiting plate is subjected to the pressure of the liquid washing, causing the limiting plate to drive the limiting support rod to slide towards the limiting housing. The limiting support rod compresses and contracts the second spring, thereby absorbing impact energy, preventing rigid collisions, and controlling the sliding speed. The limiting plate and the outside of the guide tube are fitted together to achieve a smooth fit. The limiting plate and the guide tube are fitted together inside the pipe, thereby forming a "double sealing pair," blocking the core leakage channel, achieving a "pressure self-tightening effect," becoming tighter with each flush, eliminating dynamic leakage, eliminating "reciprocating vibration gaps," and preventing alternating leakage.

[0016] Fourth, this noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve allows liquid to flow from the limiting plate into the conical tube. The liquid comes into contact with the semi-circular groove, which slows down the liquid flow rate. The semi-circular groove forces the high-speed fluid to generate a large number of tiny eddies, breaking up the large-scale turbulent structure that would normally generate high-frequency noise, thereby reducing the intensity of fluid noise and suppressing equipment vibration. The groove changes the natural frequency of the fluid inside the tube, destroying the conditions for resonance between the fluid and the valve body, thus preventing noise from being amplified by resonance. Secondly, it prevents cavitation. The semi-circular groove can break the large bubbles generated by cavitation into tiny bubbles. These tiny bubbles release less energy when they collapse, significantly reducing the erosion damage to the equipment.

[0017] 5. This noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve, after the liquid enters the manifold, flows into the multi-stage sleeve, dispersing the total pressure difference generated by the ball valve's throttling into multiple small pressure differences. This avoids the sudden pressure drop caused by single-stage throttling, ensuring that the fluid pressure is always higher than the saturated vapor pressure of the medium throughout the entire process. This suppresses bubble formation at the source and dissipates the liquid's kinetic energy in stages. By throttling and eddy friction, some kinetic energy is consumed, significantly reducing the flow velocity of the fluid exiting from the circular cutout. This weakens the impact noise of the high-speed jet on the downstream pipeline and valve body, as well as the flow velocity of the multi-stage buffer medium. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of the regulating ball valve for noise reduction, vibration resistance and cavitation prevention of the present invention. Figure 2 This is a schematic diagram of the ball valve structure of the present invention; Figure 3 This is a schematic diagram of the friction assembly structure of the present invention; Figure 4 This is a schematic diagram of the positioning component structure of the present invention; Figure 5 This is a partial structural diagram of the composite component of the present invention; Figure 6 This is a schematic cross-sectional view of the composite component of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the limiting component of the present invention; Figure 8 This is a schematic cross-sectional view of the multi-level component structure of the present invention.

[0019] In the diagram: 1. Valve body; 2. Flange block; 3. Drive motor; 4. Connecting shaft; 5. Valve ball; 6. Friction assembly; 7. Positioning assembly; 8. Composite component; 61. Fixing frame; 62. Connecting shaft; 63. Arc-shaped bracket; 64. Rubber block; 71. External frame; 72. Auxiliary rod; 73. Positioning frame; 74. Telescopic rod; 75. First spring; 76. Flange outer sleeve; 801. Elastic rod; 802. Second plate; 803. Soft rubber diaphragm; 804. First Plate; 805, guide tube; 806, plastic film; 807, limiting component; 808, triangular block; 809, arc-shaped groove; 810, manifold; 811, multi-stage component; 812, spoiler rod; 8071, limiting shell; 8072, second spring; 8073, limiting support rod; 8074, limiting plate; 8075, tapered tube; 8076, semi-circular groove; 8111, multi-stage frame; 8112, circular cutout; 8113, multi-stage sleeve. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] First embodiment, such as Figures 1 to 4 As shown, the present invention provides a technical solution: a noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve, comprising a valve body 1, a connecting shaft 4 rotatably connected to the outer side of the valve body 1, a drive motor 3 fixedly connected to the top of the connecting shaft 4, a valve ball 5 fixedly connected to the bottom of the connecting shaft 4, the bottom of the valve ball 5 rotatably connected to the inner wall of the valve body 1, a friction assembly 6 fixedly connected to the inner wall of the valve body 1 near the valve ball 5, flange blocks 2 fixedly connected to both ends of the outer side of the valve body 1, a positioning assembly 7 fixedly connected to the outer side of the flange blocks 2, and a composite component 8 fixedly connected to one side of the outer side of the flange blocks 2; a pipe is connected to the flange block 2 near the composite component 8, and liquid flows from one side of the composite component 8 to the other side of the valve body 1. As the flow of liquid is established, during the process of flange 2 being fixed to the pipeline, composite component 8 enters the pipeline along with the pipeline and fits against the inner wall of the pipeline. When the liquid flows, the liquid enters the interior of valve body 1 from composite component 8. Drive motor 3 controls connecting shaft 4 to rotate, which drives valve ball 5 to rotate inside valve body 1, thereby achieving the function of closing the liquid flow. During the rotation of valve ball 5, it rubs against friction component 6 to clean the surface of valve ball 5, thereby reducing the accumulation of impurities, preventing gaps between valve ball 5 and the inner wall of valve body 1, reducing the probability of equipment leakage, and thus extending the service life of equipment.

[0022] The friction assembly 6 includes a fixed frame 61, the outer side of which is fixedly connected to the inner wall of the valve body 1. A connecting shaft 62 is fixedly connected to the outer side of the fixed frame 61, and an arc-shaped bracket 63 is fixedly connected to one side of the outer side of the connecting shaft 62. A rubber block 64 is fixedly connected to the outer side of the arc-shaped bracket 63. When the connecting shaft 4 controls the valve ball 5 to rotate, the surface of the valve ball 5 rubs against the surface of the rubber block 64, causing the rubber block 64 to clean the surface of the valve ball 5. This reduces impurity adsorption, prevents impurities from clumping, and prevents gaps from forming between the valve ball 5 and the inner wall of the valve body 1, thereby preventing liquid leakage, avoiding affecting the service life of the equipment, and ensuring the normal operation of the equipment.

[0023] The positioning assembly 7 includes a flange sleeve 76, the inner side of which is fixedly connected to the outer side of the flange block 2. An external frame 71 is fixedly connected to one side of the outer side of the flange sleeve 76. A telescopic rod 74 is fixedly connected to the edge of the outer side of the external frame 71. A first spring 75 is sleeved on the outer side of the telescopic rod 74. An auxiliary rod 72 is fixedly connected to the middle of the outer side of the external frame 71. A positioning frame 73 is fixedly connected to the outer side of the auxiliary rod 72 and the telescopic rod 74 away from the external frame 71. The telescopic rod 74 is fitted with a first spring 75 and mounted on the positioning frame 73. The telescopic rod 74 supports the external frame 71. When the liquid flow inside the valve body 1 causes the equipment to vibrate, the first spring 75 contracts to reduce vibration and buffer the impact. When the liquid flows inside the valve body 1, especially under high pressure differential, high flow velocity, or at the moment of valve opening and closing, fluid pulsation and impact will cause the valve body 1 to vibrate. The telescopic rod 74 absorbs this vibration energy and prevents the vibration from being transmitted to the pipes and supports, thus preventing resonance and fatigue damage. The auxiliary rod 72 guides the telescopic rod 74 to slide, improving the stability of the component during operation.

[0024] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 5 to 6 As shown, the composite component 8 includes a first plate 804, a soft rubber film 803 is fixedly connected to the outer side of the first plate 804 away from the flange block 2, a second plate 802 is fixedly connected to the outer side of the soft rubber film 803, an elastic rod 801 is fixedly connected to the outer side of the second plate 802, and the outer side of the elastic rod 801 is fixedly connected to the outer side of the flange block 2. A guide tube 805 is fixedly connected to the outer side of the first plate 804 near the second plate 802. When the pipeline moves towards flange block 2, and the second plate 802 comes into contact with the pipeline mating surface, the second plate 802 drives the soft rubber membrane 803 to move towards the first plate 804. The second plate 802 squeezes the elastic rod 801, thereby playing a role in shock absorption and buffering, reducing vibration generated during pipeline connection, reducing wear between components, and thus extending the service life of components. The soft rubber membrane 803 increases the protection effect of the pipeline interface and improves the anti-leakage effect. The guide pipe 805 is wider on the side closer to flange block 2 and narrower on the side farther from flange block 2. When the equipment is connected to the pipeline, the guide pipe 805 enters the pipeline to guide the liquid flow, causing the inlet to be misaligned with the pipeline mating interface, reducing the probability of leakage at the interface, thereby ensuring the normal operation of the equipment.

[0025] A limiting component 807 is fixedly connected to the outside of the guide tube 805. A plastic film 806 is fixedly connected to the outside of the limiting component 807 near the guide tube 805, and the outside of the plastic film 806 is fixedly connected to the outside of the guide tube 805. After the limiting component 807 enters the pipe, it adheres to the inner wall of the pipe. When the liquid flows, the liquid washes over the limiting component 807, causing it to slide onto the guide tube 805, thus engaging with it. This engagement reduces liquid leakage and guides liquid flow. Furthermore, the plastic film 806 is positioned between the limiting component 807 and the guide tube 805. When the limiting component 807 moves towards the guide tube 805, the plastic film 806 prevents liquid from flowing into dead corners of the component, thus preventing leakage and reducing liquid intrusion into dead corners, reducing liquid corrosion, extending the service life of the equipment, and ensuring its normal operation.

[0026] A triangular block 808 is fixedly connected to the inner wall of the guide tube 805 on the side away from the limiting component 807. An arc-shaped groove 809 is formed on the outer side of the triangular block 808 away from the inner wall of the guide tube 805. The triangular block 808 can be made of materials such as silicone. When the limiting component 807 slides inward toward the guide tube 805, the outer side of the limiting component 807 rubs against the triangular block 808, thereby limiting the movement space of the component and making the triangular block 808 fit against the outer side of the limiting component 807. This prevents the component from shaking due to liquid flow and improves the stability of the component during the flow process. The arc-shaped groove 809 has a narrow structure and is evenly distributed on the contact surface of the triangular block 808, thereby increasing the friction performance on the component surface, improving the friction effect on the component, and improving the stability effect of the component.

[0027] A manifold 810 is fixedly connected to the outer side of the first section 804, away from the second section 802. A flow-dispersing rod 812 is fixedly connected to the inner wall of the manifold 810. A multi-stage component 811 is fixedly connected to the outer side of the manifold 810, away from the first section 804. The manifold 810 adopts a structure that is wider at the front and narrower at the back, which plays a role in guiding the flowing liquid. When the liquid flows inside the manifold 810, it comes into contact with the surface of the flow-dispersing rod 812, thereby breaking bubbles in advance, avoiding concentrated detonation, dispersing impact energy, weakening the vibration source, dispersing the collapse energy to multiple points, and significantly reducing the amplitude, so that it cannot form a continuous excitation force, eliminating pipe resonance caused by cavitation, and stabilizing the flow field in conjunction with the conical structure.

[0028] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 7 to 8As shown, the limiting component 807 includes a limiting housing 8071, a second spring 8072 is fixedly connected to the inner side of the limiting housing 8071, a limiting support rod 8073 is fixedly connected to one side of the second spring 8072, and a limiting plate 8074 is fixedly connected to the outer side of the limiting support rod 8073 away from the second spring 8072. When liquid flows from the front of the limiting plate 8074, the liquid washes over the limiting plate 8074. The limiting plate 8074 is subjected to the pressure of the liquid washing, causing the limiting support rod 8073 to slide towards the limiting housing 8071. The limiting support rod 8073 compresses and contracts the second spring 8072, thereby absorbing impact energy, preventing rigid collisions, and controlling the sliding speed. The limiting plate 8074 fits into the outer side of the guide tube 805, achieving a smooth fit. The limiting plate 8074 and the guide tube 805 fit into the inside of the pipe, thereby forming a "double sealing pair", blocking the core leakage channel, achieving a "pressure self-tightening effect", becoming tighter with each wash, eliminating dynamic leakage, eliminating "reciprocating vibration gap", and preventing alternating leakage.

[0029] A tapered tube 8075 is fixedly connected to the inner side of the limiting plate 8074, and a semi-circular groove 8076 is formed on the inner side of the tapered tube 8075. Liquid flows from the limiting plate 8074 into the tapered tube 8075, and the liquid comes into contact with the semi-circular groove 8076, thereby slowing down the liquid flow rate. The semi-circular groove 8076 forces the high-speed fluid to generate a large number of tiny eddies, breaking up the large-scale turbulent structure that would normally generate high-frequency noise, thereby reducing the intensity of fluid noise and suppressing the amplitude of equipment vibration. The groove changes the natural frequency of the fluid in the tube, destroying the conditions for resonance between the fluid and the valve body, and preventing noise from being amplified due to resonance. Secondly, it plays a role in preventing cavitation. The semi-circular groove 8076 can break the large bubbles generated by cavitation into tiny bubbles. These small bubbles release less energy when they collapse, significantly reducing the erosion damage to the equipment.

[0030] The multi-stage component 811 includes a multi-stage frame 8111. A multi-stage sleeve 8113 is fixedly connected to the outside of the multi-stage frame 8111 near the side of the baffle rod 812. A circular cutout 8112 is provided in the middle of the outside of the multi-stage frame 8111. After the liquid enters the manifold 810, the liquid flows into the multi-stage sleeve 8113, dispersing the total pressure difference generated by the throttling of the valve ball 5 into multiple small pressure differences. This avoids the sudden pressure drop caused by single-stage throttling, ensuring that the fluid pressure is always higher than the saturated vapor pressure of the medium throughout the process. This suppresses bubble formation at the source and dissipates the liquid kinetic energy in stages. By throttling and eddy friction, some kinetic energy is consumed, significantly reducing the flow velocity of the fluid flowing out from the circular cutout 8112. This weakens the impact noise of the high-speed jet on the downstream pipeline and valve body, as well as the flow velocity of the multi-stage buffer medium.

[0031] In use, flange blocks 2 are provided on both sides of the valve body 1, and a composite component 8 is provided on one side of the flange block 2. One side of the composite component 8 is connected to the pipeline along with the flange block 2, thereby realizing the connection between the pipeline and the ball valve. The composite component 8 enters the pipeline along with the ball valve and the pipeline. The size of the composite component 8 matches the size of the pipeline. The positioning component 7 is set on the outside of the flange block 2. When the liquid inside the pipeline flows into the valve body 1, the liquid impacts the limiting component 807, and the limiting plate 8074 is subjected to pressure changes, causing the limiting plate 8074 to engage with the guide pipe 805, thereby achieving a smooth engagement. The engagement of the limiting plate 8074 and the guide pipe 805 inside the pipeline forms a "double sealing pair", blocking the core leakage channel, achieving a "pressure self-tightening effect", becoming tighter with each surge, eliminating dynamic leakage, eliminating "reciprocating vibration gap", and preventing alternating leakage. The liquid enters the guide tube 805 from the conical tube 8075 and flows into the collector tube 810. The liquid contacts the outside of the turbulence rod 812, thereby breaking bubbles in advance, avoiding concentrated detonation, dispersing impact energy, weakening the vibration source, dispersing the collapse energy to multiple points, and significantly reducing the amplitude, so that it cannot form a continuous excitation force, eliminating pipe resonance caused by cavitation, and stabilizing the flow field in conjunction with the conical structure. The liquid enters the multi-stage component 811 through the baffle rod 812. The multi-stage component 811 disperses the total pressure difference generated by the throttling of the valve ball 5 into multiple small pressure differences, avoiding the sudden pressure drop caused by single-stage throttling. This ensures that the fluid pressure is always higher than the saturated vapor pressure of the medium throughout the process, suppressing bubble formation at the source and dissipating the liquid's kinetic energy in stages. By throttling and eddy friction, some kinetic energy is consumed, which greatly reduces the flow velocity of the fluid flowing out of the circular cutout 8112. This weakens the impact noise of the high-speed jet on the downstream pipeline and valve body, as well as the flow velocity of the multi-stage buffer medium.

[0032] The above description aims to improve the noise reduction, vibration resistance, and cavitation prevention functions of the ball valve, thereby ensuring the normal operation of the equipment.

[0033] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A regulating ball valve for noise reduction, vibration resistance, and cavitation prevention, characterized in that, The valve body (1) is rotatably connected to a connecting shaft (4) on its outer side. A drive motor (3) is fixedly connected to the top of the connecting shaft (4). A valve ball (5) is fixedly connected to the bottom of the connecting shaft (4). The bottom of the valve ball (5) is rotatably connected to the inner wall of the valve body (1). A friction assembly (6) is fixedly connected to the side of the inner wall of the valve body (1) near the valve ball (5). Flange blocks (2) are fixedly connected to both ends of the valve body (1). A positioning assembly (7) is fixedly connected to the outer side of the flange block (2). A composite component (8) is fixedly connected to one side of the outer side of the flange block (2). The friction assembly (6) includes a fixing frame (61), the outer side of the fixing frame (61) is fixedly connected to the inner wall of the valve body (1), a connecting shaft (62) is fixedly connected to the outer side of the fixing frame (61), an arc-shaped bracket (63) is fixedly connected to one side of the connecting shaft (62), and a rubber block (64) is fixedly connected to the outer side of the arc-shaped bracket (63).

2. The regulating ball valve for noise reduction, vibration resistance, and cavitation prevention according to claim 1, characterized in that: The positioning component (7) includes a flange sleeve (76), the inner side of which is fixedly connected to the outer side of the flange block (2), an external frame (71) is fixedly connected to one side of the outer side of the flange sleeve (76), a telescopic rod (74) is fixedly connected to the edge of the outer side of the external frame (71), a first spring (75) is sleeved on the outer side of the telescopic rod (74), an auxiliary rod (72) is fixedly connected to the middle of the outer side of the external frame (71), and a positioning frame (73) is fixedly connected to the outer side of the auxiliary rod (72) and the telescopic rod (74) away from the external frame (71).

3. The regulating ball valve for noise reduction, vibration resistance, and cavitation prevention according to claim 1, characterized in that: The composite component (8) includes a first plate (804), a soft rubber film (803) is fixedly connected to the outer side of the first plate (804) away from the flange block (2), a second plate (802) is fixedly connected to the outer side of the soft rubber film (803), an elastic rod (801) is fixedly connected to the outer side of the second plate (802), the outer side of the elastic rod (801) is fixedly connected to the outer side of the flange block (2), and a guide tube (805) is fixedly connected to the outer side of the first plate (804) near the second plate (802).

4. A noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve according to claim 3, characterized in that: A limiting component (807) is fixedly connected to the outside of the guide tube (805). A plastic film (806) is fixedly connected to the outside of the limiting component (807) near the guide tube (805). The outside of the plastic film (806) is fixedly connected to the outside of the guide tube (805).

5. A noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve according to claim 4, characterized in that: A triangular block (808) is fixedly connected to the inner wall of the guide tube (805) away from the limiting component (807), and an arc-shaped groove (809) is provided on the outer side of the triangular block (808) away from the inner wall of the guide tube (805).

6. A regulating ball valve for noise reduction, vibration resistance, and cavitation prevention according to claim 3, characterized in that: A flow collector (810) is fixedly connected to the side of the first plate (804) away from the second plate (802). A flow deflector (812) is fixedly connected to the inner wall of the flow collector (810). A multi-stage component (811) is fixedly connected to the side of the flow collector (810) away from the first plate (804).

7. A noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve according to claim 5, characterized in that: The limiting component (807) includes a limiting housing (8071), a second spring (8072) is fixedly connected to the inner side of the limiting housing (8071), a limiting support rod (8073) is fixedly connected to one side of the second spring (8072), and a limiting plate (8074) is fixedly connected to the outer side of the limiting support rod (8073) away from the second spring (8072).

8. A noise-reducing, vibration-resistant, and cavitation-preventing regulating ball valve according to claim 7, characterized in that: A tapered tube (8075) is fixedly connected to the inner side of the limiting plate (8074), and a semi-circular groove (8076) is provided on the inner side of the tapered tube (8075).

9. A regulating ball valve for noise reduction, vibration resistance, and cavitation prevention according to claim 6, characterized in that: The multi-stage component (811) includes a multi-stage frame (8111), and a multi-stage sleeve (8113) is fixedly connected to the side of the multi-stage frame (8111) near the spoiler rod (812). A circular cutout (8112) is provided in the middle of the outside of the multi-stage frame (8111).

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