A high-performance butterfly valve with automatic pressure regulation

Abstract

The present invention discloses a high-performance butterfly valve capable of automatically adjusting pressure, which relates to the technical field of butterfly valves. The butterfly valve includes a valve control mechanism, a self-cleaning mechanism, an eccentric mechanism, and a pressure relief mechanism. The valve control mechanism is connected to the self-cleaning mechanism, the eccentric mechanism is fixedly connected to the valve control mechanism, the pressure relief mechanism is connected to the valve control mechanism, the cleaning mechanism is fixedly connected to the valve control mechanism, and the pressure relief mechanism is connected to the self-cleaning mechanism. The valve control mechanism ensures the opening and closing actions of the valve flap. The self-cleaning mechanism cleans the surface of the valve body to prevent dirt accumulation. The eccentric mechanism adjusts the eccentric movement of the valve flap through the combination of a hydraulic cylinder and an eccentric block to improve the sealing performance. The pressure relief mechanism monitors and adjusts the pressure in real time through a pressure sensor to prevent equipment damage, ensuring that the valve does not leak during the opening and closing processes, and can perform automatic cleaning and pressure adjustment, so that the equipment has good sealing performance, cleaning efficiency, and safety.

Description

Technical Field

[0001] The present invention relates to the technical field of butterfly valves, and specifically to a high-performance butterfly valve capable of automatically adjusting pressure. Background Technique

[0002] With the continuous improvement of industrial automation, butterfly valves are widely used in fields such as petrochemical, environmental protection, water treatment, food and medicine. Traditional butterfly valves have developed various driving methods such as manual, pneumatic, and electric, and can basically meet the flow regulation and pipeline truncation requirements under most working conditions. However, with the increasing requirements for process accuracy, safety, and cleanliness, traditional butterfly valves are inadequate in aspects such as self-cleaning, sealing reliability, and pressure safety management. Therefore, the industry has begun to explore the application of more sensors and composite technologies such as electromagnetic and hydraulic in butterfly valves to meet stricter control, cleaning, and safety standards. In the future, butterfly valves will have a broader application prospect in the fields of fine manufacturing, high-end equipment, and intelligentization, and there will also be more innovative products integrating multi-disciplinary technologies.

[0003] Currently, butterfly valves on the market usually adopt single mechanical or electric control. Although they have basic switching functions, most still remain at the purely passive execution level. Some improved butterfly valves have begun to add simple differential pressure or flow detection devices to assist in judging the opening and closing state of the valve or the pipeline pressure situation. However, these improved products usually can only provide one-way adjustment triggered by alarm or passive instructions, lacking adaptability and comprehensive self-cleaning functions. For high-viscosity fluids or working conditions containing impurities, filters or centrifugal flushing devices are generally added at the front end of the valve, with high costs and cumbersome processes. In addition, for systems with higher pressures, traditional pressure relief methods also mostly use a combination of separate pressure relief valves and pressure limiting valves, with monitoring and action separated, not only having limited response speed but also being prone to maintenance difficulties.

[0004] In view of the above related technologies, first of all, traditional butterfly valves generally lack self-cleaning mechanisms, resulting in the need for regular shutdown cleaning when using fluids containing impurities or prone to scaling, wasting manpower and time; secondly, although most traditional butterfly valves have certain sealing performance, insufficient attention is paid to the sealing life and reliability of the valve flap under high-pressure or frequently opened and closed scenarios; and there is a lack of eccentric mechanisms and multi-stage sealing structures that can adjust different pressures on both sides, resulting in unstable fitting of the valve flap during operation. Finally, for pressure monitoring and relief, traditional technologies often require additional pressure monitoring systems and external pressure relief channels. Therefore, those skilled in the art have provided a high-performance butterfly valve capable of automatically adjusting pressure to solve the problems raised in the above background. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-performance butterfly valve capable of automatically adjusting pressure to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The butterfly valve includes a valve control mechanism, a self-cleaning mechanism, an eccentric mechanism, and a pressure relief mechanism. The valve control mechanism is connected to the self-cleaning mechanism, the eccentric mechanism is fixedly connected to the valve control mechanism, the pressure relief mechanism is connected to the valve control mechanism, the self-cleaning mechanism is fixedly connected to the valve control mechanism, and the pressure relief mechanism is connected to the self-cleaning mechanism.

[0008] By adopting the above technical solutions, the valve control mechanism is fixedly connected to the valve body through a pneumatic actuator, enabling the motor to precisely control the movement of the valve flap. The control components work in coordination through parts such as the control shaft and the sliding block to ensure the opening and closing actions of the valve flap. The self-cleaning mechanism drives the transmission components through a cleaning motor, enabling the cleaning block to clean the surface of the valve body and preventing dirt accumulation. The eccentric mechanism adjusts the eccentric movement of the valve flap through the combination of a hydraulic cylinder and an eccentric block to improve the sealing performance. The pressure relief mechanism monitors and adjusts the pressure in real time through a pressure sensor to prevent equipment damage. Each mechanism realizes the overall coordinated work through the connection and fastening design, ensuring that there is no leakage during the opening and closing processes of the valve, and enabling automatic cleaning and pressure regulation. The valve control mechanism, the eccentric mechanism, and the pressure relief mechanism cooperate with each other to ensure the precise control and pressure regulation of the valve; the self-cleaning mechanism ensures the long-term cleanliness inside the valve, avoiding the impact of dirt on performance, so that the equipment has good sealing performance, cleaning efficiency, and safety.

[0009] Further, the valve control mechanism includes a valve body, a pneumatic actuator, a control component, and a valve flap. The pneumatic actuator is fixedly connected to the valve body, the pneumatic actuator is drivingly connected to the control component, the control component is drivingly connected to the valve flap. The valve flap is circular, and there is a contact portion on the valve flap. The contact portion is rounded, and the valve flap abuts against the eccentric mechanism.

[0010] By adopting the above technical solutions, the valve control mechanism includes a valve body, a pneumatic actuator, a control component, and a valve flap. The pneumatic actuator is fixedly connected to the valve body, and the driving connection between the pneumatic actuator and the control component provides power output for the control component. The control component is drivingly connected to the valve flap, causing the valve flap to rotate. The valve flap is circular and has a contact portion, and the contact portion is rounded. The valve flap abuts against the eccentric block of the eccentric mechanism. The pneumatic actuator precisely adjusts the opening and closing of the valve flap through the control component, ensuring that the valve can adjust the fluid flow according to requirements. The pneumatic actuator drives the movement of the control component, and then drives the valve flap to open and close. The rounded contact portion reduces friction and extends the service life of the valve. The design of the valve control mechanism improves the accuracy of the valve and ensures long-term stable operation.

[0011] Further, the control assembly includes a control shaft, a sliding block, a connecting column, a control block, a clamping electromagnet, a clamping elastic member, and a clamping magnetic block. The pneumatic actuator is in transmission connection with the control shaft, the control shaft is in transmission connection with the connecting column, the connecting column is in transmission connection with the sliding block, the sliding block is in sliding connection with the control block, the clamping electromagnet is fixedly connected to the control block, the clamping electromagnet is fixedly connected to the clamping elastic member, the clamping magnetic block is fixedly connected to the clamping elastic member, the clamping magnetic block and the clamping electromagnet are magnetically repellent for driving, and the clamping magnetic block is in sliding connection with the control block.

[0012] By adopting the above technical solution, the control shaft is connected to the pneumatic actuator to transmit the rotational power output by the motor to the downstream components. The sliding block can slide or reciprocate in the control block for driving after adjusting the eccentric angle of the valve flap. The connecting column is used to connect components such as the control shaft and the sliding block to play a driving role. The control block serves as the guide and mounting base for the movement of the sliding block and cooperates with components such as the clamping electromagnet and the clamping magnetic block. The clamping electromagnet is fixedly connected to the control block to control the movement or positioning of the clamping magnetic block through electromagnetic force. The clamping elastic member is fixedly connected to the clamping electromagnet and the clamping magnetic block to provide the necessary elastic force for clamping drive during magnetic repulsion or attraction. The clamping magnetic block and the clamping electromagnet have magnetic repulsion drive and can slide in the control block to realize the clamping and release of the valve flap drive. When the pneumatic actuator works, the control shaft drives the connecting column and the sliding block to move. Through the electromagnetic force between the clamping electromagnet and the clamping magnetic block, the precise adjustment of the clamping state transmission path is realized. By using magnetic repulsion and the buffering of the elastic member, the motor drive and the clamping mechanism are combined, improving the stability and flexibility of the valve opening and closing control, ensuring the smoothness and accuracy of the valve control mechanism during the execution of the opening and closing actions, and effectively avoiding the wear and noise problems of traditional mechanical cooperation.

[0013] Further, the eccentric mechanism includes a first eccentric block, a second eccentric block, a third eccentric block, a first sealing ring, a second sealing ring, a first eccentric hydraulic cylinder, and a second eccentric hydraulic cylinder. There are four first eccentric blocks and four first sealing rings. The first eccentric block abuts against the valve flap, the first sealing ring is fixedly connected to the first eccentric block, the second sealing ring is fixedly connected to the valve flap, the first eccentric block is in sliding connection with the second eccentric block, the second eccentric block is in sliding connection with the third eccentric block, the third eccentric block is fixedly connected to the valve body, the second eccentric hydraulic cylinder is fixedly connected to the third eccentric block, the second eccentric hydraulic cylinder is in transmission connection with the second eccentric block, the first eccentric hydraulic cylinder is fixedly connected to the second eccentric block, and the first eccentric hydraulic cylinder is in transmission connection with the first eccentric block.

[0014] By adopting the above technical scheme, the first eccentric block, the second eccentric block and the third eccentric block are connected by sliding to form an eccentric structure. At the same time, the eccentric movement of the valve disc during the opening and closing process is realized through the change of pressure on both sides, thereby enhancing the sealing effect. The first sealing ring is tightly connected to the first eccentric block to form a multi-point sealing structure to avoid fluid leakage. The second sealing ring is tightly connected to the valve disc to form a sealing interface in the contact area between the valve disc and the first eccentric block. The first eccentric hydraulic cylinder and the second eccentric hydraulic cylinder are respectively connected to the first and second eccentric blocks by transmission. The eccentric blocks are driven by hydraulic pressure to move, thereby further fine-tuning the position and fit of the valve disc. The eccentric hydraulic cylinder pushes or pulls the eccentric blocks to form linear motion during control, thereby causing the valve disc to produce a slight eccentricity, thereby obtaining a higher sealing performance. The sliding connection between the eccentric blocks and the driving force of the hydraulic cylinder are utilized to ensure that efficient sealing fit is always maintained during the opening and closing process. Through the coordination of multi-stage eccentric linear motion, the valve can achieve good sealing performance and pressure resistance, reduce wear and extend service life.

[0015] Furthermore, the cross-section of the first sealing ring and the second sealing ring is S-shaped and surrounds the seal, the first eccentric block is provided with an abutment groove, the second sealing ring abuts against the abutment groove, and the first eccentric block, the second eccentric block, the third eccentric block and the first sealing ring are all crescent-shaped.

[0016] By adopting the above technical solution, the first sealing ring and the second sealing ring of the S-shaped line surround seal have S-shaped cross-sections, and are connected with the eccentric block and the valve disc in a surround manner, so as to maintain a stable fit seal in dynamic eccentric movement. The abutment groove (arranged on the first eccentric block) is used to abut with the second sealing ring, so that the sealing ring has a reliable position and support during eccentric movement. The crescent-shaped eccentric block and sealing ring are more geometrically consistent with the circular structure of the valve disc, which can provide a larger contact surface when opening or closing, thereby enhancing the sealing effect. The S-shaped cross-section sealing ring is matched with the crescent-shaped The eccentric block can reduce uneven contact and wear of the sealing surface. The design of the abutment groove can provide more stable positioning for the sealing ring when the valve disc is opened and closed. When the valve disc moves eccentrically, the second sealing ring cooperates with the abutment groove, and the first sealing ring is tightly connected to the first eccentric block, forming a plurality of surrounding sealing areas as a whole. The S-shaped cross-section enhances the elastic fit of the sealing ring to the sealing surface after being subjected to force. The semi-crescent-shaped eccentric block can naturally fit with the circular structure of the valve disc, thereby improving the sealing reliability, effectively improving the sealing performance of the valve in the eccentric state, and extending the service life of the seal.

[0017] Furthermore, the self-cleaning mechanism includes a first cleaning block, a second cleaning block, a cleaning motor, and a transmission assembly. The cleaning motor is fixedly connected to the valve body, the cleaning motor is drivingly connected to the transmission assembly, the transmission assembly is drivingly connected to the first cleaning block, and the transmission assembly is drivingly connected to the second cleaning block. The first cleaning block is provided with a first flow-stabilizing groove, and the second cleaning block is provided with a second flow-stabilizing groove. The first flow-stabilizing groove and the second flow-stabilizing groove are communicated with each other. Both the first flow-stabilizing groove and the second flow-stabilizing groove are spiral around the axis of the first cleaning block. The first cleaning block is provided with a cleaning cavity, and the second cleaning block is provided with a communicating cavity. The cleaning cavity and the communicating cavity are communicated with each other. The cleaning cavity is hemispherical, and the communicating cavity is cylindrical. The first flow-stabilizing groove is circumferentially arranged around the cleaning cavity, and the second flow-stabilizing groove is circumferentially arranged around the communicating cavity.

[0018] By adopting the above technical solution, the first cleaning block and the second cleaning block rotate under the drive of the cleaning motor for cleaning the interior of the valve body and the surface of the valve flap. The cleaning motor is fixedly connected to the valve body and drivingly connected to the transmission assembly to provide power for the cleaning blocks. The transmission assembly transmits the power of the cleaning motor to the first cleaning block and the second cleaning block respectively to achieve cooperative cleaning. The first flow-stabilizing groove (provided on the first cleaning block) and the second flow-stabilizing groove (provided on the second cleaning block) are both spiral and communicate with each other, and can guide the fluid or cleaning liquid to flow along the spiral path. The cleaning cavity (located in the first cleaning block) and the communicating cavity (located in the second cleaning block) are respectively of hemispherical and cylindrical structures, and the two are communicated with each other for storing the cleaning liquid or collecting dirt, cooperating with the flow-stabilizing groove to improve the cleaning effect. The cleaning motor is fixed on the valve body, and the output power is distributed to the two cleaning blocks through the transmission assembly, so that they rotate or reciprocate for cleaning at the corresponding positions inside and outside the valve body. A continuous and stable fluid channel is formed through the spiral flow-stabilizing groove, and the dirt is taken away or collected by using the structural advantages of the cleaning cavity and the communicating cavity, ensuring that the valve can still maintain a good state after long-term use and reducing the failures or performance degradation caused by dirt accumulation.

[0019] Furthermore, the transmission assembly includes a transmission gear rod, a commutation electromagnetic block, a commutation magnetic block, a commutation gear rod group, and a driven gear rod. The cleaning motor is drivingly connected to the transmission gear rod, the transmission gear rod is drivingly connected to the driven gear rod, the driven gear rod is drivingly connected to the first cleaning block, the transmission gear rod is inserted and drivingly connected to the commutation gear rod group, the driven gear rod is inserted and drivingly connected to the commutation gear rod group, the commutation gear rod group is fixedly connected to the commutation magnetic block, the commutation gear rod group is rotatably connected to the valve body, and the commutation gear rod group is drivingly connected to the second cleaning block.

[0020] By adopting the above technical solution, the driving gear rod transmits the rotational motion of the cleaning motor to the driven gear rod and the commutation gear rod group. The commutation electromagnetic block and the commutation magnetic block interact with each other to form the linear motion of the commutation gear rod group. The direction of gear transmission or the power path is controlled by electromagnetic force. The commutation magnetic block is fixedly connected to the commutation gear rod group, and power commutation or distribution is achieved through magnetic cooperation. The commutation gear rod group can be connected to the driving gear rod or the driven gear rod by plugging, switching the second cleaning block to different rotation directions. The driven gear rod is drivingly connected to the first cleaning block, so as to achieve the rotation of the first cleaning block. At the same time, it can be plugged with the commutation gear rod group to drive the second cleaning block. The output shaft of the cleaning motor is connected to the driving gear rod. Under the action of the commutation electromagnetic block and the commutation magnetic block, the commutation gear rod group can selectively transmit power to the first or second cleaning block.

[0021] The gear group is switched by means of electromagnetic commutation, enabling a single motor to drive multiple cleaning components, achieving multi-site cleaning under limited space and power source, and improving the working efficiency and flexibility of the self-cleaning mechanism.

[0022] Further, the commutation gear rod group includes a first commutation rod, a second commutation rod, a first commutation gear, and a second commutation gear. The first commutation rod is plug-connected and drivingly connected to the driving gear rod. The second commutation rod is plug-connected and drivingly connected to the second commutation gear. The first commutation rod is drivingly connected to the first commutation gear. The second commutation rod is drivingly connected to the second commutation gear. The second commutation rod is rotatably connected to the first commutation gear.

[0023] By adopting the above technical solution, the first commutation rod is plug-connected to the driving gear rod, and power input or transmission is achieved through the first commutation gear. The second commutation rod is plug-connected to the second commutation gear, and the second cleaning block is driven by rotation or turning. The first commutation gear is drivingly connected to the first commutation rod and is rotatably connected to the second commutation rod at the same time, for power transmission between different gears. The second commutation gear is plug-connected and drivingly connected to the second commutation rod, and can receive or output the power transmitted from the first commutation gear. Through the combined plugging of multiple rods and multiple gears, power distribution in different directions and to different components is realized, meeting complex cleaning requirements. When the driving gear rod drives the first commutation rod to rotate, the rotational or meshing relationship between the first commutation gear and the second commutation rod can be switched or synchronized to drive the second commutation gear. With the help of the plug-in type gear rod combination, power commutation and distribution are realized within a limited space, and the cleaning blocks are mutually switched or synchronously rotated through the commutation gears.

[0024] The mobility of the self-cleaning mechanism is improved, and multi-angle and multi-direction cleaning actions can be realized in a set of gear transmission systems.

[0025] Further, the pressure relief mechanism includes a pressure relief pipe, a pressure relief valve, a first pressure sensor, a second pressure sensor, an impeller, and a pressure relief tank. The pressure relief pipe is connected to the valve body, the pressure relief valve is fixedly connected to the valve, the pressure relief valve is connected to the pressure relief pipe, the pressure relief valve is located at the lower end of the valve body, the first pressure sensor is fixedly connected to the valve body, the second pressure sensor is fixedly connected to the valve body, the first pressure sensor is fixedly connected to the first eccentric block, the pressure relief pipe is connected to the pressure relief tank, and the control shaft is drivingly connected to the impeller.

[0026] By adopting the above technical solution, the pressure relief pipe is connected to the valve body and is used to discharge or introduce the fluid into the pressure relief tank when the pressure exceeds the limit. The pressure relief valve is fixedly connected to the valve body, located at the lower end of the valve body, and communicates with the pressure relief pipe, and is responsible for automatically opening or closing the discharge channel. The first pressure sensor is fastened to the first eccentric block, and the second pressure sensor is fastened to the valve body, and is used to monitor the pressure data inside the valve body or at the eccentric structure in real time. The impeller is drivingly connected to the control shaft, and the impeller is driven to rotate by the control shaft. When the valve or the pressure relief process is in progress, it can assist in guiding the fluid flow or generating measurement data. The pressure relief tank is connected to the pressure relief pipe and is used to collect or store the excess discharged fluid to ensure system safety. When the sensor detects that the pressure inside the valve body exceeds the preset range, the pressure relief valve automatically opens under the control signal instruction or its own mechanical setting, and the excess fluid is introduced into the pressure relief tank through the pressure relief pipe. Utilizing the real-time detection of the pressure sensor and the action linkage of the pressure relief valve can avoid the pipeline or the valve body from bearing excessive pressure; the impeller can assist in discharging the fluid or provide an additional detection signal through the rotational speed during this process, effectively preventing equipment damage or safety accidents caused by pressure overload, and ensuring the long-term stable and reliable operation of the system.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: firstly, the first eccentric block, the second eccentric block and the third eccentric block are connected by sliding or fastening to form an eccentric system, so as to realize the eccentric movement of the valve disc during the opening and closing process and enhance the sealing effect; the first sealing ring is fastened to the first eccentric block to form a multi-point sealing structure together to avoid fluid leakage; the second sealing ring is fastened to the valve disc to form a sealing interface in the contact area between the valve disc and the first eccentric block; the first eccentric hydraulic cylinder and the second eccentric hydraulic cylinder are respectively connected to the first and second eccentric blocks by transmission; the eccentric blocks are driven by hydraulic pressure to move, so as to further fine-tune the position and fit of the valve disc; the eccentric hydraulic cylinder pushes or pulls the eccentric block during control to make the valve disc produce a slight eccentricity, so as to obtain higher sealing performance; the sliding connection between the eccentric blocks and the driving force of the hydraulic cylinder are utilized to ensure that efficient sealing fit is always maintained during the opening and closing process; the good sealing performance and pressure resistance of the valve are realized through multi-stage eccentric cooperation, so as to reduce wear and extend the service life; secondly, the first cleaning block and the second cleaning block are driven by the cleaning motor to move Or rotate, used to clean the inside of the valve body and the surface of the valve disc, the cleaning motor is fastened to the valve body and connected to the transmission component to provide power for the cleaning block, the transmission component transmits the power of the cleaning motor to the first cleaning block and the second cleaning block respectively, to achieve coordinated cleaning, the first stabilizing groove (arranged on the first cleaning block) and the second stabilizing groove (arranged on the second cleaning block) are both spiral and interconnected, and can guide the fluid or cleaning liquid to flow along the spiral path, the cleaning cavity (located in the first cleaning block) and the connecting cavity (located in the second cleaning block) are hemispherical and cylindrical structures respectively, the two are connected, used to store cleaning liquid or collect dirt, and cooperate with the stabilizing groove to improve the cleaning effect, the cleaning motor is fixed on the valve body, and the output power is distributed to the two cleaning blocks through the transmission component, so that they rotate or reciprocate at the corresponding positions inside and outside the valve body for cleaning, and a continuous and stable fluid channel is formed through the spiral stabilizing groove, and the structural advantages of the cleaning cavity and the connecting cavity are used to take away or collect dirt, so as to ensure that the valve can still maintain a good condition after long-term use, and reduce failures or performance degradation caused by dirt accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the valve control mechanism of the present invention;

[0030] Figure 3 This is a schematic diagram of the control component structure of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the eccentric mechanism of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the first eccentric block of the present invention;

[0033] Figure 6 Schematic diagram of the transmission component structure of the present invention;

[0034] Figure 7 Schematic diagram of the first reversing rod structure of the present invention;

[0035] Figure 8 Schematic diagram of the pressure relief mechanism of the present invention.

[0036] In the figure: 1. Valve control mechanism; 11. Valve body; 12. Pneumatic actuator; 13. Control component; 131. Control shaft; 132. Sliding block; 133. Connecting column; 134. Control block; 135. Clamping electromagnet; 136. Clamping elastic member; 137. Clamping magnetic block; 14. Valve flap; 141. Contact point; 2. Self-cleaning mechanism; 21. First cleaning block; 211. Cleaning cavity; 212. First steady flow groove; 22. Second cleaning block; 221. Second steady flow groove; 222. Communication cavity; 23. Cleaning motor; 24. Transmission component; 241. Transmission gear rod; 242. Reversing electromagnet; 243. Reversing magnetic block; 244. Reversing gear rod group; 2441. First reversing rod; 2442. Second reversing rod; 2443. First reversing gear; 2444. Second reversing gear; 245. Driven gear rod; 3. Eccentric mechanism; 31. First eccentric block; 311. Contact groove; 32. Second eccentric block; 33. Third eccentric block; 34. First sealing ring; 35. Second sealing ring; 36. First eccentric hydraulic cylinder; 37. Second eccentric hydraulic cylinder; 4. Pressure relief mechanism; 41. Pressure relief pipe; 42. Pressure relief valve; 43. First pressure sensor; 44. Second pressure sensor; 45. Impeller; 46. Pressure relief tank. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figure 1 - Figure 8 as shown, the present invention provides a high-performance butterfly valve technical solution capable of automatically adjusting pressure:

[0039] The butterfly valve includes a valve control mechanism 1, a self-cleaning mechanism 2, an eccentric mechanism 3 and a pressure relief mechanism 4. The valve control mechanism 1 and the self-cleaning mechanism 2 are connected in communication. The eccentric mechanism 3 and the valve control mechanism 1 are fixedly connected. The pressure relief mechanism 4 and the valve control mechanism 1 are connected in communication. The self-cleaning mechanism 2 and the valve control mechanism 1 are fixedly connected. The pressure relief mechanism 4 and the self-cleaning mechanism 2 are connected in communication.

[0040] By adopting the above technical solutions, the valve control mechanism 1 makes the motor accurately control the movement of the valve flap 14 through the firm connection between the pneumatic actuator 12 and the valve body 11. The control assembly 13 coordinates the work through parts such as the control shaft 131 and the sliding block 132 to ensure the opening and closing actions of the valve flap 14. The self-cleaning mechanism 2 drives the transmission assembly 24 through the cleaning motor 23, enabling the cleaning block to clean the surface of the valve body 11 and preventing dirt accumulation. The eccentric mechanism 3 adjusts the eccentric movement of the valve flap 14 through the combination of the hydraulic cylinder and the eccentric block to improve the sealing performance. The pressure relief mechanism 4 monitors and adjusts the pressure in real time through the pressure sensor to prevent equipment damage. Each mechanism realizes the overall coordinated work through the connection and fastening design, ensuring that no leakage occurs during the opening and closing processes of the valve, and enabling automatic cleaning and pressure adjustment. The valve control mechanism 1, the eccentric mechanism 3, and the pressure relief mechanism 4 cooperate with each other to ensure the precise control and pressure adjustment of the valve; the self-cleaning mechanism 2 ensures the long-term cleanliness inside the valve, avoiding the influence of dirt on the performance, so that the equipment has good sealing performance, cleaning efficiency, and safety.

[0041] Further, the valve control mechanism 1 includes a valve body 11, a pneumatic actuator 12, a control assembly 13, and a valve flap 14. The pneumatic actuator 12 is firmly connected to the valve body 11. The pneumatic actuator 12 is drivingly connected to the control assembly 13, and the control assembly 13 is drivingly connected to the valve flap 14. The valve flap 14 is circular, and there is a contact portion 141 on the valve flap 14. The contact portion 141 is rounded, and the valve flap 14 abuts against the eccentric mechanism 3.

[0042] By adopting the above technical solutions, the valve control mechanism 1 includes a valve body 11, a pneumatic actuator 12, a control assembly 13, and a valve flap 14. The pneumatic actuator 12 is firmly connected to the valve body 11. The pneumatic actuator 12 is drivingly connected to the control assembly 13 to provide power output for the control assembly 13. The control assembly 13 is drivingly connected to the valve flap 14, causing the valve flap 14 to make a rotational movement. The valve flap 14 is circular and has a contact portion 141. The contact portion 141 is rounded. The valve flap 14 abuts against the eccentric block of the eccentric mechanism 3. The pneumatic actuator 12 accurately adjusts the opening and closing of the valve flap 14 through the control assembly 13 to ensure that the valve can adjust the fluid flow according to requirements. The pneumatic actuator 12 drives the movement of the control assembly 13, and then drives the valve flap 14 to open and close. The rounded contact portion 141 reduces friction and extends the service life of the valve. The design of the valve control mechanism 1 improves the accuracy of the valve and ensures long-term stable operation.

[0043] Further, the control component 13 includes a control shaft 131, a sliding block 132, a connecting column 133, a control block 134, a clamping electromagnet 135, a clamping elastic member 136, and a clamping magnetic block 137. The pneumatic actuator 12 is in transmission connection with the control shaft 131. The control shaft 131 is in transmission connection with the connecting column 133. The connecting column 133 is in transmission connection with the sliding block 132. The sliding block 132 is in sliding connection with the control block 134. The clamping electromagnet 135 is fixedly connected to the control block 134. The clamping electromagnet 135 is fixedly connected to the clamping elastic member 136. The clamping magnetic block 137 is fixedly connected to the clamping elastic member 136. The clamping magnetic block 137 is driven by magnetic repulsion with the clamping electromagnet 135. The clamping magnetic block 137 is in sliding connection with the control block 134.

[0044] By adopting the above technical solution, the control shaft 131 is connected to the pneumatic actuator 12 to transmit the rotational power output by the motor to the downstream components. The sliding block 132 can slide or reciprocate in the control block 134 for driving after adjusting the eccentric angle of the valve flap 14. The connecting column 133 is used to connect components such as the control shaft 131 and the sliding block 132 to play a transmission role. The control block 134 serves as the guide and mounting base for the movement of the sliding block 132 and cooperates with components such as the clamping electromagnet 135 and the clamping magnetic block 137. The clamping electromagnet 135 is fixedly connected to the control block 134 to control the movement or positioning of the clamping magnetic block 137 through electromagnetic force. The clamping elastic member 136 is fixedly connected to the clamping electromagnet 135 and the clamping magnetic block 137 to provide the necessary elastic force for clamping transmission during magnetic repulsion or attraction. The clamping magnetic block 137 has magnetic repulsion transmission with the clamping electromagnet 135 and can slide within the control block 134 to achieve the clamping and release of the transmission of the valve flap 14. When the pneumatic actuator 12 works, the control shaft 131 drives the connecting column 133 and the sliding block 132 to move. Through the electromagnetic force between the clamping electromagnet 135 and the clamping magnetic block 137, the precise adjustment of the transmission path in the clamping state is realized. By using magnetic repulsion and elastic member buffering, the motor drive and the clamping mechanism are combined, improving the stability and flexibility of the valve opening and closing control, ensuring the smoothness and accuracy of the valve control mechanism 1 during the execution of the opening and closing actions, and effectively avoiding the wear and noise problems of traditional mechanical cooperation.

[0045] Further, the eccentric mechanism 3 includes a first eccentric block 31, a second eccentric block 32, a third eccentric block 33, a first sealing ring 34, a second sealing ring 35, a first eccentric hydraulic cylinder 36 and a second eccentric hydraulic cylinder 37. There are four first eccentric blocks 31 and four first sealing rings 34. The first eccentric blocks 31 are in contact with the valve flap 14. The first sealing rings 34 are fixedly connected to the first eccentric blocks 31. The second sealing rings 35 are fixedly connected to the valve flap 14. The first eccentric blocks 31 are slidably connected to the second eccentric blocks 32. The second eccentric blocks 32 are slidably connected to the third eccentric blocks 33. The third eccentric blocks 33 are fixedly connected to the valve body 11. The second eccentric hydraulic cylinder 37 is fixedly connected to the third eccentric blocks 33. The second eccentric hydraulic cylinder 37 is drivingly connected to the second eccentric blocks 32. The first eccentric hydraulic cylinder 36 is fixedly connected to the second eccentric blocks 32. The first eccentric hydraulic cylinder 36 is drivingly connected to the first eccentric blocks 31.

[0046] By adopting the above technical solution, the first eccentric block 31, the second eccentric block 32 and the third eccentric block 33 form an eccentric structure through sliding connection. At the same time, through the change of pressure on both sides, the eccentric movement of the valve flap 14 during the opening and closing process is realized, enhancing the sealing effect. The first sealing ring 34 is fixedly connected to the first eccentric block 31 to jointly form a multi-point sealing structure to avoid fluid leakage. The second sealing ring 35 is fixedly connected to the valve flap 14 to form a sealing interface in the contact area between the valve flap 14 and the first eccentric block 31. The first eccentric hydraulic cylinder 36 and the second eccentric hydraulic cylinder 37 are respectively drivingly connected to the first and second eccentric blocks 32. The eccentric blocks are driven by hydraulic pressure to move, further finely adjusting the position and fit degree of the valve flap 14. When the eccentric hydraulic cylinder is controlled, it pushes or pulls the eccentric block to form a linear movement, causing the valve flap 14 to generate a small eccentricity, thereby obtaining higher sealing performance. By using the sliding connection between the eccentric blocks and the driving force of the hydraulic cylinder, it is ensured that efficient sealing fit is always maintained during the opening and closing process. Through the cooperation of multi-stage eccentric linear movement, good sealing performance and pressure resistance of the valve are achieved, reducing wear and extending the service life.

[0047] Further, the cross-sections of the first sealing ring 34 and the second sealing ring 35 are in an S-shaped line for surrounding seal. The first eccentric block 31 is provided with an abutting groove 311. The second sealing ring 35 abuts against the abutting groove 311. The first eccentric block 31, the second eccentric block 32, the third eccentric block 33 and the first sealing ring 34 are all semi-crescent-shaped.

[0048] By adopting the above technical solution, the first sealing ring 34 and the second sealing ring 35 of the S-shaped line surround seal have an S-shaped cross-section, and are connected with the eccentric block and the valve disc 14 in a surround manner, so as to maintain a stable fit seal in dynamic eccentric movement. The abutment groove 311 (arranged on the first eccentric block 31) is used to abut with the second sealing ring 35, so that the sealing ring has a reliable position and support during eccentric movement. The semi-crescent-shaped eccentric block and sealing ring are more geometrically consistent with the circular structure of the valve disc 14, which can provide a larger contact surface when opening or closing, thereby enhancing the sealing effect. The S-shaped cross-section sealing ring is matched with the semi-crescent-shaped eccentric The block can reduce uneven contact and wear of the sealing surface. The design of the abutment groove 311 can provide more stable positioning for the sealing ring when the valve disc 14 is opened and closed. When the valve disc 14 moves eccentrically, the second sealing ring 35 cooperates with the abutment groove 311, and the first sealing ring 34 is tightly connected to the first eccentric block 31, so that a plurality of surrounding sealing areas are formed as a whole. The S-shaped cross-section enhances the elastic fit of the sealing ring to the sealing surface after being subjected to force. The semi-crescent-shaped eccentric block can naturally fit with the circular structure of the valve disc 14, thereby improving the sealing reliability, effectively improving the sealing performance of the valve in the eccentric state, and extending the service life of the seal.

[0049] Furthermore, the self-cleaning mechanism 2 includes a first cleaning block 21, a second cleaning block 22, a cleaning motor 23 and a transmission assembly 24. The cleaning motor 23 is fastened to the valve body 11, the cleaning motor 23 is transmission-connected to the transmission assembly 24, the transmission assembly 24 is transmission-connected to the first cleaning block 21, and the transmission assembly 24 is transmission-connected to the second cleaning block 22. The first cleaning block 21 is provided with a first stabilizing groove 212, and the second cleaning block 22 is provided with a second stabilizing groove 221. The first stabilizing groove 212 and the second stabilizing groove 221 are connected. The first stabilizing groove 212 and the second stabilizing groove 221 are both spirally shaped around the axis of the first cleaning block 21. The first cleaning block 21 is provided with a cleaning chamber 211, and the second cleaning block 22 is provided with a connecting chamber 222. The cleaning chamber 211 and the connecting chamber 222 are connected. The cleaning chamber 211 is hemispherical, and the connecting chamber 222 is cylindrical. The first stabilizing groove 212 is arranged circumferentially in the cleaning chamber 211, and the second stabilizing groove 221 is arranged circumferentially in the connecting chamber 222.

[0050] By adopting the above technical solution, the first cleaning block 21 and the second cleaning block 22 rotate driven by the cleaning motor 23, which is used to clean the inside of the valve body 11 and the surface of the valve flap 14. The cleaning motor 23 is fixedly connected to the valve body 11 and is in transmission connection with the transmission assembly 24 to provide power for the cleaning blocks. The transmission assembly 24 transmits the power of the cleaning motor 23 to the first cleaning block 21 and the second cleaning block 22 respectively to achieve cooperative cleaning. The first steady flow groove 212 (provided on the first cleaning block 21) and the second steady flow groove 221 (provided on the second cleaning block 22) are both spiral and communicate with each other, and can guide the fluid or cleaning liquid to flow along the spiral path. The cleaning cavity 211 (located inside the first cleaning block 21) and the communication cavity 222 (located inside the second cleaning block 22) are of hemispherical and cylindrical structures respectively, and the two are connected to store the cleaning liquid or collect dirt, and cooperate with the steady flow groove to improve the cleaning effect. The cleaning motor 23 is fixed on the valve body 11, and the output power is distributed to the two cleaning blocks through the transmission assembly 24, so that they rotate or reciprocate to clean at the corresponding positions inside and outside the valve body 11. A continuous and stable fluid channel is formed through the spiral steady flow groove, and the dirt is taken away or collected by using the structural advantages of the cleaning cavity 211 and the communication cavity 222, ensuring that the valve can still maintain a good state after long-term use and reducing failures or performance degradation caused by dirt accumulation.

[0051] Further, the transmission assembly 24 includes a transmission gear rod 241, a commutation electromagnetic block 242, a commutation magnetic block 243, a commutation gear rod group 244 and a driven gear rod 245. The cleaning motor 23 is in transmission connection with the transmission gear rod 241, the transmission gear rod 241 is in transmission connection with the driven gear rod 245, the driven gear rod 245 is in transmission connection with the first cleaning block 21, the transmission gear rod 241 is in plug-in transmission with the commutation gear rod group 244, the driven gear rod 245 is in plug-in transmission with the commutation gear rod group 244, the commutation gear rod group 244 is fixedly connected to the commutation magnetic block 243, the commutation gear rod group 244 is rotatably connected to the valve body 11, and the commutation gear rod group 244 is in transmission connection with the second cleaning block 22.

[0052] By adopting the above technical solution, the drive gear rod 241 transmits the rotational motion of the cleaning motor 23 to the driven gear rod 245 and the commutation gear rod group 244. The commutation electromagnet block 242 and the commutation magnetic block 243 interact to form the linear motion of the commutation gear rod group 244. The gear drive direction or the power distribution path is controlled by electromagnetic force. The commutation magnetic block 243 is fixedly connected to the commutation gear rod group 244, and the power commutation or distribution is realized through magnetic cooperation. The commutation gear rod group 244 can be connected to the drive gear rod 241 or the driven gear rod 245 by plugging, so as to switch the second cleaning block to different rotation directions. The driven gear rod 245 is in transmission connection with the first cleaning block 21, so as to achieve the purpose of the rotation of the first cleaning block 21. At the same time, it can be plugged with the commutation gear rod group 244 to drive the second cleaning block 22. The output shaft of the cleaning motor 23 is connected to the drive gear rod 241. Under the action of the commutation electromagnet block 242 and the commutation magnetic block 243, the commutation gear rod group 244 can selectively transmit the power to the first or second cleaning block 22.

[0053] The gear set is switched by means of electromagnetic commutation, enabling a single motor to drive multiple cleaning components, achieving multi-site cleaning under limited space and power sources, and improving the working efficiency and flexibility of the self-cleaning mechanism 2.

[0054] Furthermore, the commutation gear rod group 244 includes a first commutation rod 2441, a second commutation rod 2442, a first commutation gear 2443 and a second commutation gear 2444. The first commutation rod 2441 is in plug-in transmission connection with the drive gear rod 241, the second commutation rod 2442 is in plug-in transmission connection with the second commutation gear 2444, the first commutation rod 2441 is in transmission connection with the first commutation gear 2443, the second commutation rod 2442 is in transmission connection with the second commutation gear 2444, and the second commutation rod 2442 is rotatably connected to the first commutation gear 2443.

[0055] By adopting the above technical solution, the first reversing rod 2441 is inserted and connected with the transmission gear rod 241, and the power input or transmission is realized through the first reversing gear 2443. The second reversing rod 2442 is inserted and connected with the second reversing gear 2444, and the driving of the second cleaning block 22 is realized by rotation or turning. The first reversing gear 2443 is in transmission connection with the first reversing rod 2441 and is rotatably connected with the second reversing rod 2442 at the same time, which is used for the transmission of power between different gears. The second reversing gear 2444 is in inserted transmission connection with the second reversing rod 2442, and can receive or output the power transmitted from the first reversing gear 2443. Through the combined insertion of multiple rods and multiple gears, the power distribution in different directions and different components is realized, meeting complex cleaning requirements. When the transmission gear rod 241 drives the first reversing rod 2441 to rotate, the rotation or meshing relationship between the first reversing gear 2443 and the second reversing rod 2442 can be switched or synchronized, realizing the driving of the second reversing gear 2444. With the help of the plug-in gear rod combination, power reversing and distribution are realized in a limited space, and the mutual switching or synchronous rotation of the cleaning blocks is realized through the reversing gears.

[0056] Improve the mobility of the self-cleaning mechanism 2, and be able to realize cleaning actions in multiple angles and directions in a set of gear transmission systems.

[0057] Further, the pressure relief mechanism 4 includes a pressure relief pipe 41, a pressure relief valve 42, a first pressure sensor 43, a second pressure sensor 44, an impeller 45 and a pressure relief tank 46. The pressure relief pipe 41 is communicated with the valve body 11, the pressure relief valve 42 is fixedly connected with the valve, the pressure relief valve 42 is communicated with the pressure relief pipe 41, the pressure relief valve 42 is located at the lower end of the valve body 11, the first pressure sensor 43 is fixedly connected with the valve body 11, the second pressure sensor 44 is fixedly connected with the valve body 11, the first pressure sensor 43 is fixedly connected with the first eccentric block 31, the pressure relief pipe 41 is communicated with the pressure relief tank 46, and the control shaft 131 is in transmission connection with the impeller 45.

[0058] By adopting the above technical solution, the pressure relief pipe 41 is communicated with the valve body 11 and is used to discharge or introduce the fluid into the pressure relief tank 46 when the pressure exceeds the limit. The pressure relief valve 42 is fixedly connected to the valve body 11, located at the lower end of the valve body 11, and is communicated with the pressure relief pipe 41, responsible for automatically opening or closing the discharge channel. The first pressure sensor 43 is fixedly mounted on the first eccentric block 31, and the second pressure sensor 44 is fixedly mounted on the valve body 11, used to monitor the pressure data inside the valve body 11 or at the eccentric structure in real time. The impeller 45 is drivingly connected to the control shaft 131, and the impeller 45 is driven to rotate by the control shaft 131. When the valve or the pressure relief process is in progress, it can assist in guiding the fluid flow or generating measurement data. The pressure relief tank 46 is connected to the pressure relief pipe 41 and is used to collect or store the excess discharged fluid to ensure the system safety. When the sensor detects that the pressure inside the valve body 11 exceeds the preset range, the pressure relief valve 42 automatically opens under the control signal instruction or its own mechanical setting, and the excess fluid is introduced into the pressure relief tank 46 through the pressure relief pipe 41. By using the real-time detection of the pressure sensor and the action linkage of the pressure relief valve 42, the pipeline or the valve body 11 is prevented from bearing excessive pressure; the impeller 45 can assist in discharging the fluid or provide an additional detection signal through the rotational speed during this process, effectively preventing equipment damage or safety accidents caused by pressure overload, and ensuring the long-term stable and reliable operation of the system.

[0059] The working principle of the present invention is as follows: first, the first eccentric block 31, the second eccentric block 32, and the third eccentric block 33 are connected by sliding or fastening to form an eccentric system, so as to realize the eccentric movement of the valve flap 14 during the opening and closing process and enhance the sealing effect. The first sealing ring 34 is fastened to the first eccentric block 31 to form a multi-point sealing structure to avoid fluid leakage. The second sealing ring 35 is fastened to the valve flap 14 to form a sealing interface in the contact area between the valve flap 14 and the first eccentric block 31. The first eccentric hydraulic cylinder 36 and the second eccentric hydraulic cylinder 37 are respectively connected to the first and second eccentric blocks 32 in a transmission manner. The eccentric block is driven by hydraulic pressure to further fine-tune the position and fit of the valve disc 14. The eccentric hydraulic cylinder pushes or pulls the eccentric block during control to make the valve disc 14 slightly eccentric, thereby obtaining higher sealing performance. The sliding connection between the eccentric blocks and the driving force of the hydraulic cylinder are used to ensure that efficient sealing fit is always maintained during the opening and closing process. Through multi-stage eccentric cooperation, good sealing performance and pressure resistance of the valve are achieved, wear is reduced and service life is extended. Secondly, the first cleaning block 21 and the second cleaning block 22 are driven by the cleaning motor 23 to move or rotate to clean the valve body 11. The cleaning motor 23 is connected to the valve body 11 and the transmission assembly 24 to provide power for the cleaning block. The transmission assembly 24 transmits the power of the cleaning motor 23 to the first cleaning block 21 and the second cleaning block 22 respectively to achieve coordinated cleaning. The first stabilizing groove 212 (located on the first cleaning block 21) and the second stabilizing groove 221 (located on the second cleaning block 22) are both spiral and interconnected, and can guide the fluid or cleaning liquid to flow along the spiral path. The cleaning cavity 211 (located in the first cleaning block 21) and the connecting cavity 222 (located in the second cleaning block 22) are connected to the valve body 11 and the transmission assembly 24 to provide power for the cleaning block. The transmission assembly 24 transmits the power of the cleaning motor 23 to the first cleaning block 21 and the second cleaning block 22 respectively to achieve coordinated cleaning. The cleaning blocks 22 are hemispherical and cylindrical structures respectively, which are connected and used to store cleaning liquid or collect dirt. The stabilizing groove is used to improve the cleaning effect. The cleaning motor 23 is fixed on the valve body 11, and the output power is distributed to the two cleaning blocks through the transmission component 24, so that they can rotate or reciprocate at the corresponding positions inside and outside the valve body 11 for cleaning. A continuous and stable fluid channel is formed through the spiral stabilizing groove, and the structural advantages of the cleaning chamber 211 and the connecting chamber 222 are used to take away or collect dirt, ensuring that the valve can still maintain a good condition after long-term use, reducing failures or performance degradation caused by dirt accumulation.

[0060] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-performance butterfly valve capable of automatically adjusting pressure, characterized in that: The butterfly valve includes a valve control mechanism (1), a self-cleaning mechanism (2), an eccentric mechanism (3), and a pressure relief mechanism (4). The valve control mechanism (1) is in communication with the self-cleaning mechanism (2). The eccentric mechanism (3) is fixedly connected to the valve control mechanism (1). The pressure relief mechanism (4) is in communication with the valve control mechanism (1). The cleaning mechanism is fixedly connected to the valve control mechanism (1). The pressure relief mechanism (4) is in communication with the self-cleaning mechanism (2). The valve control mechanism (1) includes a valve body (11), a pneumatic actuator (12), a control assembly (13), and a valve flap (14). The control assembly (13) includes a control shaft (131), a sliding block (132), a connecting column (133), a control block (134), a clamping electromagnet (135), a clamping elastic member (136), and a clamping magnetic block (137). The pneumatic actuator (12) is in transmission connection with the control shaft (131). The control shaft (131) is in transmission connection with the connecting column (133). The connecting column (133) is in transmission connection with the sliding block (132). The sliding block (132) is in sliding connection with the control block (134). The clamping electromagnet (135) is fixedly connected to the control block (134). The clamping electromagnet (135) is fixedly connected to the clamping elastic member (136). The clamping magnetic block (137) is fixedly connected to the clamping elastic member (136). The clamping magnetic block (137) is magnetically repelled and transmitted by the clamping electromagnet (135). The clamping magnetic block (137) is in sliding connection with the control block (134). The eccentric mechanism (3) includes a first eccentric block (31), a second eccentric block (32), a third eccentric block (33), a first sealing ring (34), a second sealing ring (35), a first eccentric hydraulic cylinder (36), and a second eccentric hydraulic cylinder (37).

2. The high-performance butterfly valve capable of automatically adjusting pressure according to claim 1, wherein: The pneumatic actuator (12) is fixedly connected to the valve body (11). The pneumatic actuator (12) is in transmission connection with the control assembly (13). The control assembly (13) is in transmission connection with the valve flap (14). The valve flap (14) is circular. An abutting portion (141) is provided on the valve flap (14). The abutting portion (141) is rounded. The valve flap (14) abuts against the eccentric mechanism (3).

3. A high-performance butterfly valve capable of automatically adjusting pressure according to claim 2, characterized in that: There are four of the first eccentric blocks (31) and the first sealing rings (34). The first eccentric blocks (31) are in contact with the valve flap (14). The first sealing rings (34) are fixedly connected to the first eccentric blocks (31). The second sealing rings (35) are fixedly connected to the valve flap (14). The first eccentric blocks (31) are slidably connected to the second eccentric blocks (32). The second eccentric blocks (32) are slidably connected to the third eccentric blocks (33). The third eccentric blocks (33) are fixedly connected to the valve body (11). The second eccentric hydraulic cylinders (37) are fixedly connected to the third eccentric blocks (33). The second eccentric hydraulic cylinders (37) are drivingly connected to the second eccentric blocks (32). The first eccentric hydraulic cylinders (36) are fixedly connected to the second eccentric blocks (32). The first eccentric hydraulic cylinders (36) are drivingly connected to the first eccentric blocks (31).

4. A high-performance butterfly valve capable of automatically adjusting pressure according to claim 3, characterized in that: The cross-sections of the first sealing rings (34) and the second sealing rings (35) are in an S-shaped line for surrounding and sealing. The first eccentric blocks (31) are provided with abutting grooves (311). The second sealing rings (35) are in contact with the abutting grooves (311). The first eccentric blocks (31), the second eccentric blocks (32), the third eccentric blocks (33), and the first sealing rings (34) are all semi-lunar in shape.

5. The high-performance butterfly valve capable of automatically adjusting pressure according to claim 4, characterized in that: The self-cleaning mechanism (2) includes a first cleaning block (21), a second cleaning block (22), a cleaning motor (23), and a transmission assembly (24). The cleaning motor (23) is fixedly connected to the valve body (11). The cleaning motor (23) is drivingly connected to the transmission assembly (24). The transmission assembly (24) is drivingly connected to the first cleaning block (21). The transmission assembly (24) is drivingly connected to the second cleaning block (22). The first cleaning block (21) is provided with a first flow-stabilizing groove (212). The second cleaning block (22) is provided with a second flow-stabilizing groove (221). The first flow-stabilizing groove (212) is communicated with the second flow-stabilizing groove (221). Both the first flow-stabilizing groove (212) and the second flow-stabilizing groove (221) are spiral around the axis of the first cleaning block (21). The first cleaning block (21) is provided with a cleaning cavity (211). The second cleaning block (22) is provided with a communicating cavity (222). The cleaning cavity (211) is communicated with the communicating cavity (222). The cleaning cavity (211) is hemispherical. The communicating cavity (222) is cylindrical. The first flow-stabilizing groove (212) is circumferentially arranged around the cleaning cavity (211). The second flow-stabilizing groove (221) is circumferentially arranged around the communicating cavity (222).

6. The high-performance butterfly valve capable of automatically adjusting pressure according to claim 5, characterized in that: The transmission assembly (24) includes a transmission gear rod (241), a commutation electromagnetic block (242), a commutation magnetic block (243), a commutation gear rod group (244), and a driven gear rod (245). The cleaning motor (23) is drivingly connected to the transmission gear rod (241). The transmission gear rod (241) is drivingly connected to the driven gear rod (245). The driven gear rod (245) is drivingly connected to the first cleaning block (21). The transmission gear rod (241) is inserted and drivingly connected to the commutation gear rod group (244). The driven gear rod (245) is inserted and drivingly connected to the commutation gear rod group (244). The commutation gear rod group (244) is fixedly connected to the commutation magnetic block (243). The commutation gear rod group (244) is rotatably connected to the valve body (11). The commutation gear rod group (244) is drivingly connected to the second cleaning block (22).

7. The high-performance butterfly valve capable of automatically adjusting pressure according to claim 6, characterized in that: The commutation gear rod group (244) includes a first commutation rod (2441), a second commutation rod (2442), a first commutation gear (2443), and a second commutation gear (2444). The first commutation rod (2441) is inserted and drivingly connected to the transmission gear rod (241). The second commutation rod (2442) is inserted and drivingly connected to the second commutation gear (2444). The first commutation rod (2441) is drivingly connected to the first commutation gear (2443). The second commutation rod (2442) is drivingly connected to the second commutation gear (2444). The second commutation rod (2442) is rotatably connected to the first commutation gear (2443).

8. A high-performance butterfly valve capable of automatically adjusting pressure according to claim 7, characterized in that: The pressure relief mechanism (4) includes a pressure relief pipe (41), a pressure relief valve (42), a first pressure sensor (43), a second pressure sensor (44), an impeller (45), and a pressure relief tank (46). The pressure relief pipe (41) is communicated with the valve body (11). The pressure relief valve (42) is fixedly connected to the valve. The pressure relief valve (42) is communicated with the pressure relief pipe (41). The pressure relief valve (42) is located at the lower end of the valve body (11). The first pressure sensor (43) is fixedly connected to the valve body (11). The second pressure sensor (44) is fixedly connected to the valve body (11). The first pressure sensor (43) is fixedly connected to the first eccentric block (31). The pressure relief pipe (41) is communicated with the pressure relief tank (46). The control shaft (131) is drivingly connected to the impeller (45).

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