High-safety ball valve capable of automatically relieving pressure

Abstract

The present invention relates to the technical field of ball valves. Disclosed is a high-safety ball valve capable of automatically relieving pressure. The ball valve comprises an inlet connector, an outlet connector, a first pressure relief assembly, a second pressure relief assembly, a third pressure relief assembly, a fourth pressure relief assembly, a fifth pressure relief assembly, a buffer assembly, a driving module, a valve rod, an intermediate valve seat, connecting rods, and other components. Pressure values required for opening the first pressure relief assembly, the second pressure relief assembly, the third pressure relief assembly, the fourth pressure relief assembly, and the fifth pressure relief assembly are sequentially increased; when the first pressure relief assembly is in a stable open state, the second pressure relief assembly starts to be opened; when the second pressure relief assembly is in a stable open state, the third pressure relief assembly starts to be opened; when the third pressure relief assembly is in a stable open state, the fourth pressure relief assembly starts to be opened; and when the fourth pressure relief assembly is in a stable open state, the fifth pressure relief assembly is fully opened, so that the impact force exerted on a ball body by a medium is reduced while quick pressure relief is realized by the buffer assembly, thereby ensuring a stable connection between the ball body and the valve rod, and prolonging the service life of the ball valve.

Description

A high-safety ball valve with automatic pressure relief Technical Field

[0001] This invention relates to the field of ball valve technology, specifically a high-safety ball valve with automatic pressure relief. Background Technology

[0002] A traditional ball valve is a valve that controls the flow of fluid by rotating a ball with a through hole. It has advantages such as simple structure, good sealing performance, and low flow resistance. However, during use, the ball valve itself is subjected to enormous pressure. After prolonged impact, the ball may shift from the valve stem, reducing the valve's service life. Furthermore, when the valve is closed, if the medium in the valve cavity expands due to increased temperature or external heat sources, it may create overpressure (such as vaporization of liquid media), threatening the structural safety of the valve and pipeline. Therefore, it is necessary to automatically relieve pressure to reduce the pressure on the ball valve. For this reason, we need a high-safety ball valve with automatic pressure relief to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a highly safe ball valve with automatic pressure relief to solve the problems mentioned in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] The ball valve includes an inlet connector, an inlet seat, an outlet seat, a ball, an outlet connector, a first pressure relief assembly, a second pressure relief assembly, a third pressure relief assembly, a fourth pressure relief assembly, a fifth pressure relief assembly, a buffer assembly, a drive module, a valve stem, an intermediate seat, and a connecting rod. The connecting rod passes sequentially through the inlet connector, the intermediate seat, and the outlet connector, and both ends of the connecting rod are threaded to nuts. The inlet seat is engaged with the outlet end of the inlet connector, and the outlet seat is engaged with the inlet end of the outlet connector. The ball is engaged between the inlet seat and the outlet seat. The valve stem is inserted into the upper keyway connecting the intermediate seat and the ball. The valve stem and the ball's central rotation axis coincide. The output part of the drive module is fixedly connected to the top of the valve stem. The buffer assembly is inserted into the inlet connector and is movably connected to the inlet connector. The buffer assembly is threadedly connected to part of the drive module and engages with the output part of the drive module. The first and second pressure relief assemblies are disposed in the inlet connector and are movably connected to it. The third, fourth, and fifth pressure relief assemblies are disposed in the outlet connector and are movably connected to it. The fifth pressure relief assembly is electrically connected to the drive module.

[0006] The pressure values ​​required to open the first, second, third, fourth, and fifth pressure relief components increase sequentially. The second pressure relief component begins to open when the first pressure relief component is stably open; the third pressure relief component begins to open when the second pressure relief component is stably open; the fourth pressure relief component begins to open when the third pressure relief component is stably open; and the fifth pressure relief component is fully open after the fourth pressure relief component is stably open. When the ball valve is in use, the inlet connector is connected to the inlet pipe, and the outlet connector is connected to the outlet pipe. The medium enters the ball valve from the inlet connector. When the ball valve is closed, the ball blocks the medium in the inlet connector from flowing into the outlet connector. When the medium pressure in the inlet connector increases, it first reaches the pressure value required to open the first pressure relief component. The medium in the inlet connector then enters the intermediate valve seat through the first pressure relief component. The medium then flows through the intermediate valve seat to the second, fourth, and fifth pressure relief components respectively. After the first pressure relief component is stably open, the second pressure relief component begins to open, and the medium flows through... The second pressure relief component enters the outlet connection and exits from the outlet connection. After the second pressure relief component is stably opened, the third pressure relief component begins to open, and the medium flows from the inlet connection through the third pressure relief component into the intermediate valve seat, and then through the second pressure relief component into the outlet connection. After the third pressure relief component is stably opened, the fourth pressure relief component begins to open, and the medium in the intermediate valve seat flows into the outlet connection through the second and fourth pressure relief components. After the fourth pressure relief component is stably opened, the fifth pressure relief component begins to open. When the fifth pressure relief component is fully open, the drive module starts, rotating the ball to fully connect the inlet and outlet connections for rapid pressure relief. At the same time, the drive module drives the buffer component to move. The buffer component blocks part of the ball when the ball valve is closed, and gradually contracts during the opening process of the ball valve, reducing the obstruction of the medium flowing from the inlet connection to the outlet connection. This achieves rapid pressure relief while reducing the impact force of the medium on the ball, ensuring a stable connection between the ball and the valve stem, and extending the service life of the ball valve.

[0007] Furthermore, the inlet connector body is provided with a first channel and a third channel. The first channel connects the inlet connector body and the intermediate valve seat. The first pressure relief component is disposed in the first channel and is connected to the first channel. The third channel connects the inlet connector body and the intermediate valve seat. The third pressure relief component is disposed in the third channel and is rotatably connected to the third channel.

[0008] The first and third channels provide two different pressure relief paths for the inlet connector to connect to the intermediate valve seat. In the initial state, the first and third pressure relief components block the first and third channels respectively, preventing the medium from flowing into the intermediate valve seat and ensuring the sealing of the ball valve. When the pressure of the medium in the inlet connector reaches the pressure value required for the third pressure relief component to open, the first pressure relief component opens stably, and the third pressure relief component begins to open gradually. The medium flows into the intermediate valve seat through the first and third pressure relief components.

[0009] Furthermore, the outlet connection body is provided with a second channel, a fourth channel, and a fifth channel. The second channel connects the outlet connection body and the intermediate valve seat. The second pressure relief component is disposed in the second channel and connected to the second channel. The fourth channel connects the outlet connection body and the intermediate valve seat. The fourth pressure relief component is disposed in the fourth channel and rotatably connected to the fourth channel. The fifth channel connects to the intermediate valve seat. The fifth pressure relief component is disposed in the fifth channel and rotatably connected to the fifth channel.

[0010] The second and fourth channels provide two different pressure relief paths for the outlet connection body to connect to the intermediate valve seat. In the initial state, the second and fourth pressure relief components block the second and fourth channels respectively, preventing the medium from flowing into the outlet connection body and ensuring the sealing of the ball valve. When the medium pressure in the intermediate valve seat reaches the pressure value required for the fourth pressure relief component to open, the second pressure relief component opens stably, and the fourth pressure relief component begins to open gradually. The medium flows into the outlet connection body through the second and fourth pressure relief components and is then discharged through the outlet connection body. When the fourth pressure relief component opens stably, the fifth pressure relief component opens completely.

[0011] Furthermore, the first pressure relief assembly includes a first spring and a first slider. One end of the first spring is fixedly connected to the first channel, and the other end of the first spring is fixedly connected to one end of the first slider. The other end of the first slider is tapered, with both the upper and lower end faces being inclined surfaces. The first slider and the first channel are slidably connected.

[0012] In its initial state, the first slider completely blocks the first channel, preventing the medium from flowing from the inlet connector into the intermediate valve seat through the first channel. The other end of the first slider is conical, with both the upper and lower end faces being inclined. When the medium reaches the set pressure value, it is easier to push the first slider, compress the first spring, open the first channel, and connect the inlet connector and the intermediate valve seat.

[0013] Furthermore, the second pressure relief assembly includes a second spring and a second slider. One end of the second spring is fixedly connected to the second channel, and the other end of the second spring is fixedly connected to one end of the second slider. The other end of the second slider is tapered, with both the upper and lower end faces being inclined surfaces. The second slider and the second channel are slidably connected.

[0014] In its initial state, the second slider completely blocks the second channel, preventing the medium from flowing from the intermediate valve seat into the outlet connector body through the second channel. When the compression of the first spring stabilizes, the medium pushes the second slider, compressing the second spring and opening the second channel, thus connecting the outlet connector body and the intermediate valve seat.

[0015] Furthermore, the third pressure relief assembly includes a first plug, a first rotating plate, and a first counterweight. The first plug is disposed on the side of the first rotating plate facing the inlet connector. The first plug and one end of the first rotating plate are fixedly connected. The first counterweight and the other end of the first rotating plate are fixedly connected. The first counterweight and the first plug are disposed on the same end face of the first rotating plate. The first counterweight is provided with a through hole in the same direction as the long axis of the first rotating plate. The first rotating plate is disposed in the third channel. The first rotating plate is rotatably connected to the third channel at its center point in the long axis direction. The four end faces of the first rotating plate are sealed and fitted to the four walls of the third channel.

[0016] In the initial state, the first counterweight causes the end of the first rotating plate containing the first block to tilt up due to its own weight. The first block completely blocks the entrance to the third channel. When the compression of the second spring stabilizes, the medium begins to press down on the first block, causing the end of the first rotating plate containing the first counterweight to tilt up. The first block no longer blocks the entrance to the third channel, and the medium flows into the intermediate valve seat through the through hole on the first counterweight and the third channel.

[0017] Furthermore, the fourth pressure relief assembly includes a second plug, a second rotating plate, and a second counterweight. The second plug is disposed on the side of the second rotating plate facing the outlet connector. One end of the second plug and the second rotating plate are fixedly connected. The second counterweight and the second plug are disposed on the same end face of the second rotating plate. The second counterweight is provided with a through hole in the same direction as the long axis of the second rotating plate. The other end of the second counterweight and the second rotating plate are fixedly connected. The second rotating plate is disposed in the fourth channel. The second rotating plate is rotatably connected to the third channel at a point off-center from the center point and close to the second counterweight in the long axis direction. The four end faces of the second rotating plate are sealed and fitted to the four walls of the fourth channel.

[0018] In the initial state, the second counterweight causes the end of the second rotating plate containing the second block to tilt up due to its own weight, completely blocking the inlet of the fourth channel. When the first rotating plate stabilizes and stops rotating, the medium begins to press down on the second block, causing the end of the second rotating plate containing the second counterweight to tilt up. The second block no longer blocks the inlet of the fourth channel, and the medium in the intermediate valve seat flows into the outlet connector body through the through hole on the second counterweight and the fourth channel.

[0019] Furthermore, the fifth pressure relief assembly includes a third blocking block, a third rotating plate, a third counterweight, and a drive switch. The third blocking block is disposed on the side of the third rotating plate facing the outlet connector body. One end of the third blocking block and the third rotating plate are fixedly connected. The third counterweight and the third blocking block are disposed on the same end face of the third rotating plate. The other end of the third counterweight and the third rotating plate are fixedly connected. The third rotating plate is disposed in the fifth channel. The center point of the third rotating plate in the long axis direction is rotatably connected to the fifth channel. The four end faces of the third rotating plate are sealed and fitted to the four walls of the fifth channel. The drive switch is fixedly connected to the fifth channel and is located below the third blocking block. The third rotating plate separates the drive switch from the third blocking block. The drive switch is electrically connected to the drive module.

[0020] Initially, the third counterweight, under its own weight, causes the end of the third rotating plate containing the third block to tilt upwards, completely blocking the entrance to the fifth channel. When the second rotating plate stabilizes and stops rotating, the medium begins to press down on the third block, causing the end of the third rotating plate containing the third counterweight to tilt upwards. The third rotating plate at the end of the third block continues to descend until the drive switch is pressed. The third block always blocks the entrance to the fifth channel. After the drive switch is turned on, the drive module starts, the valve stem drives the ball to rotate, and the ball valve is opened. When the medium pressure is less than the pressure of the third counterweight, the end of the third block on the third rotating plate tilts upwards. Releasing the drive switch resets the drive module, the valve stem rotates the ball back, and the ball valve is closed.

[0021] Furthermore, the buffer assembly includes a rotating rod, a driven gear, a pull rod, a buffer plate, and a fixed base. The rotating rod passes through a portion of the drive module and is threadedly connected to it. The rotating rod passes sequentially through the driven gear and the top of the fixed base and is rotatably connected to the pull rod. The rotating rod and the driven gear are threadedly connected. The driven gear meshes with the output portion of the drive module. The driven gear and the top of the fixed base are rotatably connected. The fixed base and the inlet connector are fixedly connected. The pull rod is inserted into the inlet connector and one end of the buffer plate is hinged. The other end of the buffer plate is hinged to the inner wall surface of the inlet connector.

[0022] When the ball valve is closed, the angle between the buffer plate and the flow direction of the medium from the inlet connection to the outlet connection is at its maximum. When the ball valve begins to open, the angle between the buffer plate and the flow direction of the medium from the inlet connection to the outlet connection gradually decreases. As the valve opens wider, the resistance to the medium flow decreases, protecting the ball from the impact of the medium while reducing the impact on the medium's flow velocity. The fixed seat is responsible for limiting the displacement of the driven gear along the central axis of the rotating rod. When the drive module starts, it drives the driven gear to rotate. The driven gear and the rotating rod are threaded together, causing the rotating rod to rise. The rotating rod drives the pull rod, which pulls the buffer plate. When the ball valve is fully open, the buffer plate is parallel to the medium flow direction, minimizing the resistance of the medium flow and facilitating rapid medium flow.

[0023] Furthermore, the drive module includes a drive motor, a fixed plate, and a transmission gear. The output shaft of the drive motor is fixedly connected to the valve stem. The fixed plate is welded to the drive motor and threadedly connected to the rotating rod. The transmission gear is welded to the output shaft of the drive motor and meshes with the driven gear. The drive motor is electrically connected to the drive switch.

[0024] When the drive switch is turned on, the drive motor starts, and the output shaft of the drive motor drives the valve stem to rotate 90°, opening the ball valve. At the same time, the transmission gear on the output shaft drives the driven gear to rotate, raising the rod. When the drive switch is turned off, the output shaft of the drive motor automatically resets, and drives the ball to rotate through the valve stem, closing the ball valve.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. This invention achieves automatic pressure relief of the ball valve as the medium pressure increases by setting the medium pressure values ​​that are continuously triggered between the first pressure relief component, the second pressure relief component, the third pressure relief component, the fourth pressure relief component and the fifth pressure relief component;

[0027] 2. The third, fourth, and fifth pressure relief components of the present invention all achieve adaptive adjustment during the pressure relief process through the lever principle. As the medium pressure increases, the first block is continuously pressed down until the first rotating plate stabilizes. Then, the second block is continuously pressed down until the second rotating plate stabilizes. Then, the third block is continuously pressed down until the drive switch is turned on, the drive motor starts and the ball valve opens. After the pressure is released to the set value, the end of the third rotating plate where the third block is located rises under the gravity of the third counterweight. When the drive switch is released, the output shaft of the drive motor rotates back to reset and closes the ball valve.

[0028] 3. When the ball valve is closed, the angle between the buffer plate and the flow direction of the medium from the inlet connector to the outlet connector is at its maximum. When the ball valve begins to open, the angle between the buffer plate and the flow direction of the medium from the inlet connector to the outlet connector gradually decreases. As the valve opens wider, the resistance to the flow of the medium is reduced, protecting the ball from the impact of the medium while reducing the impact on the flow velocity of the medium. When the ball valve is fully open, the buffer plate is parallel to the flow direction of the medium, minimizing the resistance of the medium to the flow and facilitating the rapid flow of the medium. Attached Figure Description

[0029] Figure 1 is a schematic diagram of the overall appearance structure of a high-safety ball valve with automatic pressure relief according to the present invention.

[0030] Figure 2 is a cross-sectional structural schematic diagram of a high-safety ball valve with automatic pressure relief according to the present invention.

[0031] Figure 3 is a schematic cross-sectional view of another high-safety ball valve with automatic pressure relief according to the present invention.

[0032] Figure 4 is a schematic diagram of the buffer assembly structure of a high-safety ball valve with automatic pressure relief according to the present invention;

[0033] Figure 5 is a schematic diagram of the drive module structure of a high-safety ball valve with automatic pressure relief according to the present invention;

[0034] Figure 6 is a magnified view of part A in Figure 2;

[0035] Figure 7 is a magnified view of part B in Figure 2;

[0036] Figure 8 is a magnified view of part C in Figure 2.

[0037] In the diagram: 1. Inlet connector; 2. Inlet valve seat; 3. Outlet valve seat; 4. Ball; 5. Outlet connector; 6. First pressure relief assembly; 7. Second pressure relief assembly; 8. Third pressure relief assembly; 9. Fourth pressure relief assembly; 10. Fifth pressure relief assembly; 11. Buffer assembly; 12. Drive module; 13. Valve stem; 14. Intermediate valve seat; 15. Connecting rod; 51. Second channel; 52. Fourth channel; 53. Fifth channel; 61. First spring; 62. First slider; 71. Second spring; 72. Second slider Block; 81, First blocking block; 82, First rotating plate; 83, First counterweight block; 91, Second blocking block; 92, Second rotating plate; 93, Second counterweight block; 101, Third blocking block; 102, Third rotating plate; 103, Third counterweight block; 104, Drive switch; 111, First channel; 112, Third channel; 113, Rotating rod; 114, Driven gear; 115, Pull rod; 116, Buffer plate; 117, Fixed base; 121, Drive motor; 122, Fixed plate; 123, Transmission gear. Detailed Implementation

[0038] 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.

[0039] Example: As shown in Figures 1-8, the present invention provides a high-safety ball valve technology solution with automatic pressure relief:

[0040] As shown in Figures 1-3, the ball valve includes an inlet connector 1, an inlet valve seat 2, an outlet valve seat 3, a ball 4, an outlet connector 5, a first pressure relief assembly 6, a second pressure relief assembly 7, a third pressure relief assembly 8, a fourth pressure relief assembly 9, a fifth pressure relief assembly 10, a buffer assembly 11, a drive module 12, a valve stem 13, an intermediate valve seat 14, and a connecting rod 15. The connecting rod 15 passes sequentially through the inlet connector 1, the intermediate valve seat 14, and the outlet connector 5. Both ends of the connecting rod 15 are threadedly connected to nuts. The inlet valve seat 2 is engaged with the outlet end of the inlet connector 1, the outlet valve seat 3 is engaged with the inlet end of the outlet connector 5, and the ball 4 is engaged between the inlet valve seat 2 and the outlet valve seat 3. The valve stem 13 is inserted into the intermediate valve seat 14 and the ball. The upper end of 4 is connected by a flat key. The central rotation axis of the valve stem 13 and the ball 4 coincides. The output part of the drive module 12 is fixedly connected to the top end of the valve stem 13. The buffer assembly 11 is inserted into the inlet connector 1. The buffer assembly 11 and the inlet connector 1 are movably connected. The buffer assembly 11 and part of the drive module 12 are threadedly connected. The output part of the buffer assembly 11 and the drive module 12 are engaged. The first pressure relief assembly 6 and the second pressure relief assembly 7 are disposed in the inlet connector 1 and are movably connected to the inlet connector 1. The third pressure relief assembly 8, the fourth pressure relief assembly 9 and the fifth pressure relief assembly 10 are disposed in the outlet connector 5 and are movably connected to the outlet connector 5. The fifth pressure relief assembly 10 is electrically connected to the drive module 12.

[0041] The pressure values ​​required to open the first pressure relief assembly 6, the second pressure relief assembly 7, the third pressure relief assembly 8, the fourth pressure relief assembly 9, and the fifth pressure relief assembly 10 increase sequentially. The second pressure relief assembly 7 begins to open when the first pressure relief assembly 6 is stably open; the third pressure relief assembly 8 begins to open when the second pressure relief assembly 7 is stably open; the fourth pressure relief assembly 9 begins to open when the third pressure relief assembly 8 is stably open; and the fifth pressure relief assembly 10 is fully open after the fourth pressure relief assembly 9 is stably open. When the ball valve is in use, the inlet connector 1 is connected to the inlet pipe, and the outlet connector 5 is connected to the outlet pipe. The medium enters the ball valve from the inlet connector 1. When the ball valve is closed, the ball 4 blocks the medium in the inlet connector 1 from flowing into the outlet connector 5. When the pressure of the medium in the inlet connector 1 increases, it first reaches the pressure value required to open the first pressure relief component 6. The medium in the inlet connector 1 then enters the intermediate valve seat 14 through the first pressure relief component 6. The medium then flows through the intermediate valve seat 14 to the second pressure relief component 7, the fourth pressure relief component 9, and the fifth pressure relief component 10, respectively. As the pressure continues to increase, it reaches the pressure value required to open the second pressure relief component 7. The medium then flows through the second pressure relief component 7... The pressure component 7 enters the outlet connection body 5 and exits from the outlet connection body 5; the pressure value continues to increase until it reaches the pressure value required to open the third pressure relief component 8. The medium flows from the inlet connection body 1 through the third pressure relief component 8 into the intermediate valve seat 14, and then through the second pressure relief component 7 into the outlet connection body 5; the pressure value continues to increase until it reaches the pressure value required to open the fourth pressure relief component 9. The medium in the intermediate valve seat 14 flows into the outlet connection body 5 through the second pressure relief component 7 and the fourth pressure relief component 9; the pressure value continues to increase until it reaches the pressure value required to open the fifth pressure relief component 10. When the fifth pressure relief component 10 is fully open, the drive module 12 starts, rotating the ball 4 to fully connect the inlet connector 1 and the outlet connector 5 for rapid pressure relief. At the same time, the drive module 12 drives the buffer component 11 to move. When the ball valve is closed, the buffer component 11 blocks part of the ball 4. When the ball valve is open, it gradually contracts to reduce the obstruction of the medium flowing from the inlet connector 1 to the outlet connector 5, thereby achieving rapid pressure relief while reducing the impact force of the medium on the ball 4, ensuring a stable connection between the ball 4 and the valve stem 13, and extending the service life of the ball valve.

[0042] As shown in Figures 2, 3, and 6, the inlet connector 1 is provided with a first channel 111 and a third channel 112. The first channel 111 connects the inlet connector 1 and the intermediate valve seat 14. The first pressure relief component 6 is disposed in the first channel 111 and is connected to the first channel 111. The third channel 112 connects the inlet connector 1 and the intermediate valve seat 14. The third pressure relief component 8 is disposed in the third channel 112 and is rotatably connected to the third channel 112.

[0043] The first channel 111 and the third channel 112 provide two different pressure relief paths for the inlet connector 1 to connect to the intermediate valve seat 14. In the initial state, the first pressure relief component 6 and the third pressure relief component 8 block the first channel 111 and the third channel 112 respectively, so that the medium cannot flow into the intermediate valve seat 14, ensuring the sealing of the ball valve. When the pressure of the medium in the inlet connector 1 reaches the pressure value required for the third pressure relief component 8 to open, the first pressure relief component 6 opens stably, and the third pressure relief component 8 begins to open gradually. The medium flows into the intermediate valve seat 14 through the first pressure relief component 6 and the third pressure relief component 8.

[0044] As shown in Figures 2, 6, 7, and 8, the outlet connector 5 is provided with a second channel 51, a fourth channel 52, and a fifth channel 53. The second channel 51 connects the outlet connector 5 and the intermediate valve seat 14. The second pressure relief component 7 is disposed in the second channel 51 and is connected to the second channel 51. The fourth channel 52 connects the outlet connector 5 and the intermediate valve seat 14. The fourth pressure relief component 9 is disposed in the fourth channel 52 and is rotatably connected to the fourth channel 52. The fifth channel 53 is connected to the intermediate valve seat 14. The fifth pressure relief component 10 is disposed in the fifth channel 53 and is rotatably connected to the fifth channel 53.

[0045] The second channel 51 and the fourth channel 52 provide two different pressure relief paths for the outlet connection body 5 to connect to the intermediate valve seat 14. The second pressure relief component 7 and the fourth pressure relief component 9 block the second channel 51 and the fourth channel 52 respectively in the initial state, so that the medium cannot flow into the outlet connection body 5, ensuring the sealing of the ball valve. When the medium pressure in the intermediate valve seat 14 reaches the pressure value required for the fourth pressure relief component 9 to open, the second pressure relief component 7 opens stably, and the fourth pressure relief component 9 begins to open gradually. The medium flows into the outlet connection body 5 through the second pressure relief component 7 and the fourth pressure relief component 9, and then is discharged through the outlet connection body 5. When the fourth pressure relief component 9 opens stably, the fifth pressure relief component 10 opens completely.

[0046] As shown in Figure 3, the first pressure relief assembly 6 includes a first spring 61 and a first slider 62. One end of the first spring 61 is fixedly connected to the first channel 111, and the other end of the first spring 61 is fixedly connected to one end of the first slider 62. The other end of the first slider 62 is conical, and both the upper and lower end faces are inclined. The first slider 62 and the first channel 111 are slidably connected.

[0047] In its initial state, the first slider 62 completely blocks the first channel 111, preventing the medium from flowing from the inlet connector 1 into the intermediate valve seat 14 through the first channel 111. The other end of the first slider 62 is conical, with both the upper and lower end faces being inclined. When the medium reaches the set pressure value, it is easier to push the first slider 62, compress the first spring 61, open the first channel 111, and connect the inlet connector 1 and the intermediate valve seat 14.

[0048] As shown in Figure 3, the second pressure relief assembly 7 includes a second spring 71 and a second slider 72. One end of the second spring 71 is fixedly connected to the second channel 51, and the other end of the second spring 71 is fixedly connected to one end of the second slider 72. The other end of the second slider 72 is conical, and both the upper and lower end faces are inclined. The second slider 72 is slidably connected to the second channel 51.

[0049] In its initial state, the second slider 72 completely blocks the second channel 51, preventing the medium from flowing from the intermediate valve seat 14 into the outlet connector 5 through the second channel 51. When the compression of the first spring 61 stabilizes, the medium pushes the second slider 72, compressing the second spring 71 and opening the second channel 51, thus connecting the outlet connector 5 and the intermediate valve seat 14.

[0050] As shown in Figure 6, the third pressure relief assembly 8 includes a first blocking block 81, a first rotating plate 82, and a first counterweight 83. The first blocking block 81 is disposed on the side of the first rotating plate 82 facing the inlet connector 1. One end of the first blocking block 81 and the first rotating plate 82 are fixedly connected, and the other end of the first counterweight 83 and the first rotating plate 82 are fixedly connected. The first counterweight 83 and the first blocking block 81 are disposed on the same end face of the first rotating plate 82. The first counterweight 83 is provided with a through hole in the same direction as the long axis of the first rotating plate 82. The first rotating plate 82 is disposed in the third channel 112. The first rotating plate 82 is rotatably connected to the third channel 112 at its center point in the long axis direction. The four end faces of the first rotating plate 82 are sealed and fitted to the four walls of the third channel 112.

[0051] In the initial state, the first counterweight 83 causes the end of the first rotating plate 82 containing the first block 81 to tilt up due to its own weight. The first block 81 completely blocks the inlet of the third channel 112. When the compression of the second spring 71 stabilizes, the medium begins to press down on the first block 81, causing the end of the first rotating plate 82 containing the first counterweight 83 to tilt up. The first block 81 no longer blocks the inlet of the third channel 112, and the medium flows into the intermediate valve seat 14 through the through hole on the first counterweight 83 and the third channel 112.

[0052] As shown in Figure 7, the fourth pressure relief assembly 9 includes a second blocking block 91, a second rotating plate 92, and a second counterweight 93. The second blocking block 91 is disposed on the side of the second rotating plate 92 facing the outlet connector 5. One end of the second blocking block 91 and the second rotating plate 92 are fixedly connected. The second counterweight 93 and the second blocking block 91 are disposed on the same end face of the second rotating plate 92. The second counterweight 93 is provided with a through hole in the same direction as the long axis of the second rotating plate 92. The other end of the second counterweight 93 and the second rotating plate 92 are fixedly connected. The second rotating plate 92 is disposed in the fourth channel 52. The second rotating plate 92 is rotatably connected to the third channel 112 at a position off-center from the center point and close to the second counterweight 93 in the long axis direction. The four end faces of the second rotating plate 92 are sealed and fitted to the four walls of the fourth channel 52.

[0053] In the initial state, the second counterweight 93, due to its own weight, causes the end of the second rotating plate 92 where the second block 91 is located to tilt up, and the second block 91 completely blocks the inlet of the fourth channel 52. When the first rotating plate 82 becomes stable and stops rotating, the medium begins to press down on the second block 91, causing the end of the second rotating plate 92 where the second counterweight 93 is located to tilt up. The second block 91 no longer blocks the inlet of the fourth channel 52, and the medium in the intermediate valve seat 14 flows into the outlet connector 5 through the through hole on the second counterweight 93 and the fourth channel 52.

[0054] As shown in Figure 8, the fifth pressure relief assembly 10 includes a third blocking block 101, a third rotating plate 102, a third counterweight 103, and a drive switch 104. The third blocking block 101 is disposed on the side of the third rotating plate 102 facing the outlet connector 5. One end of the third blocking block 101 and the third rotating plate 102 are fixedly connected. The third counterweight 103 and the third blocking block 101 are disposed on the same end face of the third rotating plate 102. The other end of the third counterweight 103 and the third rotating plate 102 are fixedly connected. The third rotating plate 102 is disposed in the fifth channel 53. The third rotating plate 102 is rotatably connected to the fifth channel 53 at its center point along the long axis. The four end faces of the third rotating plate 102 are sealed and fitted to the four walls of the fifth channel 53. The drive switch 104 is fixedly connected to the fifth channel 53. The drive switch 104 is located below the third block 101. The third rotating plate 102 separates the drive switch 104 from the third block 101. The drive switch 104 is electrically connected to the drive module 12.

[0055] In the initial state, the third counterweight 103, due to its own weight, causes the end of the third rotating plate 102 containing the third block 101 to tilt upwards, completely blocking the entrance of the fifth channel 53. When the second rotating plate 92 stabilizes and stops rotating, the medium begins to press down on the third block 101, causing the end of the third rotating plate 102 containing the third counterweight 103 to tilt upwards. The third rotating plate 102 at the end of the third block 101 continues to descend until it presses down the drive switch 104. The third block 101 always blocks the entrance of the fifth channel 53. After the drive switch 104 is turned on, the drive module 12 starts, and the valve stem 13 drives the ball 4 to rotate, opening the ball valve. When the medium pressure is less than the pressure of the third counterweight 103, the end of the third block 101 on the third rotating plate 102 tilts upwards. The drive switch 104 is released, the drive module 12 resets, the valve stem 13 rotates the ball 4 back, and the ball valve is closed.

[0056] As shown in Figures 3 and 4, the buffer assembly 11 includes a rotating rod 113, a driven gear 114, a pull rod 115, a buffer plate 116, and a fixed seat 117. The rotating rod 113 passes through part of the drive module 12 and is threadedly connected to part of the drive module 12. The rotating rod 113 passes through the driven gear 114 and the top of the fixed seat 117 in sequence and is rotatably connected to the pull rod 115. The rotating rod 113 and the driven gear 114 are threadedly connected. The driven gear 114 meshes with the output part of the drive module 12. The driven gear 114 and the top of the fixed seat 117 are rotatably connected. The fixed seat 117 is fixedly connected to the inlet connector 1. The pull rod 115 is inserted into the inlet connector 1 and hinged at one end to the buffer plate 116. The other end of the buffer plate 116 is hinged to the inner wall surface of the inlet connector 1.

[0057] When the ball valve is closed, the angle between the buffer plate 116 and the flow direction of the medium from the inlet connector 1 to the outlet connector 5 is at its maximum. When the ball valve begins to open, the angle between the buffer plate 116 and the flow direction of the medium from the inlet connector 1 to the outlet connector 5 gradually decreases. As the valve opens wider, the resistance to the flow of the medium decreases, protecting the ball 4 from the impact of the medium while reducing the impact on the flow velocity of the medium. The fixed seat 117 is responsible for limiting the displacement of the driven gear 114 along the central axis of the rotating rod 113. When the drive module 12 is started, it drives the driven gear 114 to rotate. The driven gear 114 and the rotating rod 113 are threadedly connected, causing the rotating rod 113 to rise. The rotating rod 113 drives the pull rod 115, and the pull rod 115 pulls the buffer plate 116. When the ball valve is fully open, the buffer plate 116 is parallel to the flow direction of the medium, so that the resistance of the medium to the medium flow is minimized, which facilitates the rapid flow of the medium.

[0058] As shown in Figures 1 and 5, the drive module 12 includes a drive motor 121, a fixed plate 122, and a transmission gear 123. The output shaft of the drive motor 121 is fixedly connected to the valve stem 13. The fixed plate 122 is welded to the drive motor 121. The fixed plate 122 is threadedly connected to the rotating rod 113. The transmission gear 123 is welded to the output shaft of the drive motor 121. The transmission gear 123 meshes with the driven gear 114. The drive motor 121 is electrically connected to the drive switch 104.

[0059] When the drive switch 104 is turned on, the drive motor 121 starts, and the output shaft of the drive motor 121 drives the valve stem 13 to rotate 90°, thus opening the ball valve. At the same time, the transmission gear 123 on the output shaft drives the driven gear 114 to rotate, thereby raising the rotating rod 113. When the drive switch 104 is turned off, the output shaft of the drive motor 121 automatically resets, and drives the ball 4 to rotate through the valve stem 13, thus closing the ball valve.

[0060] The working principle of this invention is as follows: the pressure values ​​required to open the first pressure relief assembly 6, the second pressure relief assembly 7, the third pressure relief assembly 8, the fourth pressure relief assembly 9, and the fifth pressure relief assembly 10 increase sequentially. When the first pressure relief assembly 6 is stably open, the second pressure relief assembly 7 begins to open; when the second pressure relief assembly 7 is stably open, the third pressure relief assembly 8 begins to open; when the third pressure relief assembly 8 is stably open, the fourth pressure relief assembly 9 begins to open; after the fourth pressure relief assembly 9 is stably open, the fifth pressure relief assembly 10 is fully open. When the ball valve is in use, the inlet connector 1 is connected to the inlet pipe, and the outlet connector 5 is connected to... The outlet pipeline is connected, and the medium enters the ball valve from the inlet connector 1. When the ball valve is closed, the ball 4 blocks the medium in the inlet connector 1 from flowing into the outlet connector 5. When the pressure of the medium in the inlet connector 1 increases, it first reaches the pressure value required for the first pressure relief component 6 to open. The medium in the inlet connector 1 then enters the intermediate valve seat 14 through the first pressure relief component 6. The medium then flows through the intermediate valve seat 14 to the second pressure relief component 7, the fourth pressure relief component 9, and the fifth pressure relief component 10, respectively. After the first pressure relief component 6 is stably opened, the second pressure relief component 7 begins to open, and the medium... The medium enters the outlet connection body 5 through the second pressure relief component 7 and exits from the outlet connection body 5; after the second pressure relief component 7 is stably opened, the third pressure relief component 8 begins to open, and the medium flows from the inlet connection body 1 through the third pressure relief component 8 into the intermediate valve seat 14, and then through the second pressure relief component 7 into the outlet connection body 5; after the third pressure relief component 8 is stably opened, the fourth pressure relief component 9 begins to open, and the medium in the intermediate valve seat 14 flows into the outlet connection body 5 through the second pressure relief component 7 and the fourth pressure relief component 9; after the fourth pressure relief component 9 is stably opened, the fifth pressure relief component 1... When the ball valve starts to open, the fifth pressure relief component 10 is fully open. The drive module 12 starts and rotates the ball 4 to fully connect the inlet connector 1 and the outlet connector 5 for rapid pressure relief. At the same time, the drive module 12 drives the buffer component 11 to move. When the ball valve is closed, the buffer component 11 blocks part of the ball 4. When the ball valve is open, it gradually contracts to reduce the obstruction of the medium flowing from the inlet connector 1 to the outlet connector 5. This achieves rapid pressure relief while reducing the impact force of the medium on the ball 4, ensuring a stable connection between the ball 4 and the valve stem 13, and extending the service life of the ball valve.

[0061] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-safety ball valve with automatic pressure relief, characterized in that: The ball valve includes an inlet connector (1), an inlet seat (2), an outlet seat (3), a ball (4), an outlet connector (5), a first pressure relief assembly (6), a second pressure relief assembly (7), a third pressure relief assembly (8), a fourth pressure relief assembly (9), a fifth pressure relief assembly (10), a buffer assembly (11), a drive module (12), a valve stem (13), an intermediate valve seat (14), and a connecting rod (15). The connecting rod (15) passes sequentially through the inlet connector (1), the intermediate valve seat (14), and the outlet connector (5). Both ends of the connecting rod (15) are threadedly connected to nuts. The inlet seat (2) is snapped into the outlet end of the inlet connector (1), the outlet seat (3) is snapped into the inlet end of the outlet connector (5), the ball (4) is snapped between the inlet seat (2) and the outlet seat (3), and the valve stem (13) is inserted into the intermediate valve seat (14) and the outlet seat (5). The upper end of the ball (4) is connected by a flat key. The central rotation axis of the valve stem (13) and the ball (4) coincides. The output part of the drive module (12) is fixedly connected to the top end of the valve stem (13). The buffer assembly (11) is inserted into the inlet connector (1). The buffer assembly (11) and the inlet connector (1) are movably connected. The buffer assembly (11) and part of the drive module (12) are threadedly connected. The output part of the buffer assembly (11) and the drive module (12) are engaged. The first pressure relief assembly (6) and the second pressure relief assembly (7) are disposed in the inlet connector (1) and are movably connected to the inlet connector (1). The third pressure relief assembly (8), the fourth pressure relief assembly (9) and the fifth pressure relief assembly (10) are disposed in the outlet connector (5) and are movably connected to the outlet connector (5). The fifth pressure relief assembly (10) is electrically connected to the drive module (12).

2. The high-safety ball valve with automatic pressure relief according to claim 1, characterized in that: The inlet connector (1) is provided with a first channel (111) and a third channel (112). The first channel (111) connects the inlet connector (1) and the intermediate valve seat (14). The first pressure relief component (6) is disposed in the first channel (111) and is connected to the first channel (111). The third channel (112) connects the inlet connector (1) and the intermediate valve seat (14). The third pressure relief component (8) is disposed in the third channel (112) and is rotatably connected to the third channel (112).

3. The high-safety ball valve with automatic pressure relief according to claim 2, characterized in that: The outlet connector (5) is provided with a second channel (51), a fourth channel (52) and a fifth channel (53). The second channel (51) connects the outlet connector (5) and the intermediate valve seat (14). The second pressure relief component (7) is disposed in the second channel (51) and is connected to the second channel (51). The fourth channel (52) connects the outlet connector (5) and the intermediate valve seat (14). The fourth pressure relief component (9) is disposed in the fourth channel (52) and is rotatably connected to the fourth channel (52). The fifth channel (53) is connected to the intermediate valve seat (14). The fifth pressure relief component (10) is disposed in the fifth channel (53) and is rotatably connected to the fifth channel (53).

4. The high-safety ball valve with automatic pressure relief according to claim 3, characterized in that: The first pressure relief assembly (6) includes a first spring (61) and a first slider (62). One end of the first spring (61) is fixedly connected to the first channel (111), and the other end of the first spring (61) is fixedly connected to one end of the first slider (62). The other end of the first slider (62) is conical, and both the upper and lower end faces are inclined. The first slider (62) and the first channel (111) are slidably connected.

5. A high-safety ball valve with automatic pressure relief according to claim 4, characterized in that: The second pressure relief assembly (7) includes a second spring (71) and a second slider (72). One end of the second spring (71) is fixedly connected to the second channel (51), and the other end of the second spring (71) is fixedly connected to one end of the second slider (72). The other end of the second slider (72) is conical, and both the upper and lower end faces are inclined. The second slider (72) and the second channel (51) are slidably connected.

6. A high-safety ball valve with automatic pressure relief according to claim 5, characterized in that: The third pressure relief assembly (8) includes a first plug (81), a first rotating plate (82), and a first counterweight (83). The first plug (81) is disposed on the side of the first rotating plate (82) facing the inlet connector (1). One end of the first plug (81) and the first rotating plate (82) are fixedly connected. The other end of the first counterweight (83) and the first rotating plate (82) are fixedly connected. The first counterweight (83) and the first plug (81) are disposed on the same end face of the first rotating plate (82). The first counterweight (83) is provided with a through hole in the same direction as the long axis of the first rotating plate (82). The first rotating plate (82) is disposed in the third channel (112). The first rotating plate (82) is rotatably connected to the third channel (112) at the center point in the long axis direction. The four sides of the first rotating plate (82) are sealed and fitted to the four sides of the third channel (112).

7. A high-safety ball valve with automatic pressure relief according to claim 6, characterized in that: The fourth pressure relief assembly (9) includes a second plug (91), a second rotating plate (92), and a second counterweight (93). The second plug (91) is disposed on the side of the second rotating plate (92) facing the outlet connector (5). One end of the second plug (91) and the second rotating plate (92) are fixedly connected. The second counterweight (93) and the second plug (91) are disposed on the same end face of the second rotating plate (92). The second counterweight (93) is provided with a through hole in the same direction as the long axis of the second rotating plate (92). The other end of the second counterweight (93) and the second rotating plate (92) are fixedly connected. The second rotating plate (92) is disposed in the fourth channel (52). The second rotating plate (92) is rotatably connected to the third channel (112) at a point off-center from the center point and close to the second counterweight (93) in the long axis direction. The four-sided end face of the second rotating plate (92) and the four-sided wall face of the fourth channel (52) are sealed and fitted together.

8. A high-safety ball valve with automatic pressure relief according to claim 7, characterized in that: The fifth pressure relief assembly (10) includes a third plug (101), a third rotating plate (102), a third counterweight (103), and a drive switch (104). The third plug (101) is disposed on the side of the third rotating plate (102) facing the outlet connector (5). One end of the third plug (101) and the third rotating plate (102) are fixedly connected. The third counterweight (103) and the third plug (101) are disposed on the same end face of the third rotating plate (102). The other end of the third counterweight (103) and the third rotating plate (102) are fixedly connected. The rotating plate (102) is disposed in the fifth channel (53). The third rotating plate (102) is rotatably connected to the fifth channel (53) at the center point of the long axis direction. The four sides of the third rotating plate (102) are sealed and fitted to the four sides of the fifth channel (53). The drive switch (104) is fixedly connected to the fifth channel (53). The drive switch (104) is located below the third block (101). The third rotating plate (102) separates the drive switch (104) from the third block (101). The drive switch (104) is electrically connected to the drive module (12).

9. A high-safety ball valve with automatic pressure relief according to claim 8, characterized in that: The buffer assembly (11) includes a rotating rod (113), a driven gear (114), a pull rod (115), a buffer plate (116), and a fixed seat (117). The rotating rod (113) passes through part of the drive module (12) and is threadedly connected to part of the drive module (12). The rotating rod (113) passes through the top of the driven gear (114) and the fixed seat (117) in sequence and is rotatably connected to the pull rod (115). The rotating rod (113) and the driven gear (114) are threadedly connected. The driven gear (114) meshes with the output part of the drive module (12). The driven gear (114) and the top of the fixed seat (117) are rotatably connected. The fixed seat (117) and the inlet connector (1) are fixedly connected. The pull rod (115) is inserted into one end of the inlet connector (1) and the buffer plate (116) and is hinged. The other end of the buffer plate (116) is hinged to the inner wall of the inlet connector (1).

10. A high-safety ball valve with automatic pressure relief according to claim 9, characterized in that: The drive module (12) includes a drive motor (121), a fixing plate (122), and a transmission gear (123). The output shaft of the drive motor (121) is fixedly connected to the valve stem (13). The fixing plate (122) is welded to the drive motor (121). The fixing plate (122) and the rotating rod (113) are threadedly connected. The transmission gear (123) is welded to the output shaft of the drive motor (121). The transmission gear (123) meshes with the driven gear (114). The drive motor (121) and the drive switch (104) are electrically connected.

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