High-safety ball valve capable of automatically releasing pressure

Abstract

The invention discloses a high-safety ball valve capable of automatically relieving pressure, which relates to the technical field of ball valves and 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, a middle valve seat, a connecting rod and the like. The 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, and when the first pressure relief assembly is stably opened, the second pressure relief assembly starts to be opened; when the second pressure relief assembly is stably opened, the third pressure relief assembly starts to be opened; when the third pressure relief assembly is stably opened, the fourth pressure relief assembly starts to be opened; after the fourth pressure relief assembly is stably opened, the fifth pressure relief assembly is completely opened, the buffering assembly reduces the impact force of a medium borne by the ball body while achieving rapid pressure relief, it is guaranteed that the ball body and the valve rod are stably connected, and the service life of the ball valve is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, in particular to a high-safety ball valve capable of automatically releasing pressure. Background Art

[0002] A traditional ball valve is a valve that achieves fluid on / off or regulation by rotating a ball with a through hole. It has the advantages of simple structure, good sealing, and low flow resistance. However, when a traditional ball valve is in use, the ball valve itself will be subjected to huge pressure, and part of the valve body will be impacted for a long time. The ball may be offset from the valve stem, reducing the service life of the ball valve. When the valve is closed, if the medium in the valve cavity expands due to increased temperature or external heat source, overpressure may be formed (such as vaporization of liquid medium), threatening the structural safety of the valve and pipeline. It is necessary to reduce the pressure on the ball valve by self-decompression. For this reason, we need a high-safety ball valve that can automatically relieve pressure to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a high-safety ball valve capable of automatically releasing pressure, so as to solve the problems raised in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions: The ball valve comprises an inlet connector, an inlet valve seat, an outlet valve 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 valve seat and a connecting rod, wherein the connecting rod passes through the inlet connector, the intermediate valve seat and the outlet connector in sequence, and the two ends of the connecting rod are respectively threadedly connected to the nut, the inlet valve seat is clamped at the outlet end of the inlet connector, the outlet valve seat is clamped at the inlet end of the outlet connector, the ball is clamped between the inlet valve seat and the outlet valve seat, and the valve stem is inserted into the intermediate valve seat and the upper end flat key connection of the ball. The central rotation axis of the valve stem and the sphere coincides, 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 connecting body, the buffer assembly and the inlet connecting body are movably connected, the buffer assembly and a part of the drive module are threadedly connected, the buffer assembly and the output part of the drive module are meshed, the first pressure relief assembly and the second pressure relief assembly are arranged in the inlet connecting body and are movably connected to the inlet connecting body, the third pressure relief assembly, the fourth pressure relief assembly and the fifth pressure relief assembly are arranged in the outlet connecting body and are movably connected to the outlet connecting body, and the fifth pressure relief assembly is electrically connected to the drive module.

[0005] The pressure values ​​required for the opening of 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 increase in sequence. When the first pressure relief assembly is stably opened, the second pressure relief assembly begins to open; when the second pressure relief assembly is stably opened, the third pressure relief assembly begins to open; when the third pressure relief assembly is stably opened, the fourth pressure relief assembly begins to open; after the fourth pressure relief assembly is stably opened, the fifth pressure relief assembly is fully opened; when the ball valve is in use, the inlet connector is connected to the inlet pipeline, the outlet connector is connected to the outlet pipeline, and 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, the pressure value required for the opening of the first pressure relief assembly is first reached, and the medium in the inlet connector enters the middle valve seat through the first pressure relief assembly, and the medium flows through the middle valve seat to the second pressure relief assembly, the fourth pressure relief assembly and the fifth pressure relief assembly respectively; after the first pressure relief assembly is stably opened, the second pressure relief assembly begins to open, and the medium passes through The second pressure relief component enters the outlet connector and is discharged from the outlet connector; when the second pressure relief component is stably opened, the third pressure relief component begins to open, and the medium flows from the inlet connector through the third pressure relief component into the middle valve seat, and then flows into the outlet connector through the second pressure relief component; when the third pressure relief component is stably opened, the fourth pressure relief component begins to open, and the medium in the middle valve seat flows into the outlet connector through the second pressure relief component and the fourth pressure relief component; when the fourth pressure relief component is stably opened, the fifth pressure relief component begins to open, and when the fifth pressure relief component is fully opened, the drive module starts and rotates the ball to make the inlet connector and the outlet connector fully connected 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 shrinks during the opening of the ball valve to reduce the obstruction to the medium flowing from the inlet connector to the outlet connector, thereby achieving 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.

[0006] Furthermore, a first groove and a third groove are provided in the inlet connecting body, the first groove connects the inlet connecting body and the middle valve seat, the first pressure relief assembly is provided in the first groove, the first pressure relief assembly is connected to the first groove, the third groove connects the inlet connecting body and the middle valve seat, the third pressure relief assembly is provided in the third groove, and the third pressure relief assembly is rotatably connected to the third groove.

[0007] The first groove and the third groove provide two different pressure relief paths for the inlet connector to be connected to the intermediate valve seat. The first pressure relief assembly and the third pressure relief assembly respectively block the first groove and the third groove in the initial state, so that the medium cannot flow into the intermediate valve seat, thereby ensuring the sealing of the ball valve. When the medium pressure in the inlet connector reaches the pressure value required for the third pressure relief assembly to open, the first pressure relief assembly opens stably, and the third pressure relief assembly begins to open gradually, and the medium flows into the intermediate valve seat through the first pressure relief assembly and the third pressure relief assembly.

[0008] Furthermore, a second groove, a fourth groove and a fifth groove are provided in the outlet connecting body, the second groove connects the outlet connecting body and the middle valve seat, the second pressure relief assembly is provided in the second groove, the second pressure relief assembly is connected to the second groove, the fourth groove connects the outlet connecting body and the middle valve seat, the fourth pressure relief assembly is provided in the fourth groove, the fourth pressure relief assembly is rotatably connected to the fourth groove, the fifth groove is connected to the middle valve seat, the fifth pressure relief assembly is provided in the fifth groove, and the fifth pressure relief assembly is rotatably connected to the fifth groove.

[0009] The second groove and the fourth groove provide two different pressure relief paths for the outlet connector to be connected to the intermediate valve seat. The second pressure relief assembly and the fourth pressure relief assembly respectively block the second groove and the fourth groove in the initial state, so that the medium cannot flow into the outlet connector, thereby 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 assembly to open, the second pressure relief assembly opens stably, and the fourth pressure relief assembly begins to open gradually. The medium flows into the outlet connector through the second pressure relief assembly and the fourth pressure relief assembly, and is then discharged through the outlet connector. When the fourth pressure relief assembly opens stably, the fifth pressure relief assembly opens completely.

[0010] 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 groove, 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 conical, and the upper and lower end surfaces are both inclined surfaces, and the first slider is slidably connected to the first groove.

[0011] In the initial state, the first slider completely blocks the first groove, and the medium cannot flow from the inlet connector into the middle valve seat through the first groove. The other end of the first slider is conical, and the upper and lower end surfaces are both inclined surfaces. When the medium reaches the set pressure value, it is easier to push the first slider to compress the first spring, open the first groove, and connect the inlet connector and the middle valve seat.

[0012] 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 groove, 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 conical, and the upper and lower end surfaces are both inclined surfaces, and the second slider is slidably connected to the second groove.

[0013] In the initial state, the second slider completely blocks the second groove, and the medium cannot flow from the middle valve seat through the second groove into the outlet connecting body. When the compression amount of the first spring is stable, the medium pushes the second slider to compress the second spring, open the second groove, and connect the outlet connecting body and the middle valve seat.

[0014] Furthermore, the third pressure relief assembly includes a first blocking block, a first rotating plate and a first counterweight block, the first blocking block is arranged on a surface of the first rotating plate facing the inlet connecting body, the first blocking block is fixedly connected to one end of the first rotating plate, the first counterweight block is fixedly connected to the other end of the first rotating plate, the first counterweight block and the first blocking block are arranged on the same end surface of the first rotating plate, the first counterweight block is provided with a through hole in the same direction as the long axis of the first rotating plate, the first rotating plate is arranged in the third groove, the first rotating plate is rotatably connected to the third groove at the center point in the long axis direction, and the surrounding end surfaces of the first rotating plate are sealed and fitted with the surrounding walls of the third groove.

[0015] In the initial state, the first counterweight block relies on its own gravity to cause the end of the first rotating plate where the first blocking block is located to tilt up, and the first blocking block completely blocks the entrance of the third groove. When the compression amount of the second spring is stable, the medium begins to press down the first blocking block, causing the end of the first rotating plate where the first counterweight block is located to tilt up, and the first blocking block no longer blocks the entrance of the third groove. The medium flows into the middle valve seat through the through hole on the first counterweight block and the third groove.

[0016] Furthermore, the fourth pressure relief assembly includes a second blocking block, a second rotating plate and a second counterweight block, the second blocking block is arranged on a surface of the second rotating plate facing the outlet connecting body, one end of the second blocking block and the second rotating plate is fixedly connected, the second counterweight block and the second blocking block are arranged on the same end surface of the second rotating plate, the second counterweight block is provided with a through hole in the same direction as the long axis of the second rotating plate, the second counterweight block and the other end of the second rotating plate are fixedly connected, the second rotating plate is arranged in the fourth groove, the second rotating plate deviates from the center point in the long axis direction and is rotatably connected to the third groove near the second counterweight block, and the surrounding end surfaces of the second rotating plate are sealed and fitted with the surrounding walls of the fourth groove.

[0017] In the initial state, the second counterweight block relies on its own gravity to cause the end of the second rotating plate where the second blocking block is located to tilt up, and the second blocking block completely blocks the entrance of the fourth groove. When the first rotating plate tends to be stable and no longer rotates, the medium begins to press down the second blocking block, causing the end of the second counterweight block on the second rotating plate to tilt up, and the second blocking block no longer blocks the entrance of the fourth groove. The medium in the middle valve seat flows into the outlet connecting body through the through hole on the second counterweight block and the fourth groove.

[0018] Furthermore, the fifth pressure relief assembly includes a third block, a third rotating plate, a third counterweight block and a drive switch, the third block being arranged on a surface of the third rotating plate facing the outlet connecting body, the third block being fixedly connected to one end of the third rotating plate, the third counterweight block and the third block being arranged on the same end surface of the third rotating plate, the other end of the third counterweight block and the third rotating plate being fixedly connected, the third rotating plate being arranged in a fifth groove, the third rotating plate being rotatably connected to the fifth groove at the center point in the long axis direction, the surrounding end surfaces of the third rotating plate and the surrounding wall surfaces of the fifth groove being sealed and fitted, the drive switch being fixedly connected to the fifth groove, the drive switch being located below the third block, the third rotating plate separating the drive switch and the third block, and the drive switch being electrically connected to the drive module.

[0019] In the initial state, the third counterweight block relies on its own gravity to make the end of the third blocking block on the third rotating plate tilt up, and the third blocking block completely blocks the entrance of the fifth groove. When the second rotating plate tends to be stable and no longer rotates, the medium begins to press down the third blocking block, causing the end of the third counterweight on the third rotating plate to tilt up, and the third rotating plate at one end of the third blocking block continues to descend until the drive switch is pressed. The third blocking block always blocks the entrance of the fifth groove. 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 block, one end of the third blocking block on the third rotating plate tilts up, the drive switch is released, the drive module is reset, the valve stem rotates the ball, and the ball valve is closed.

[0020] Furthermore, the buffer assembly includes a rotating rod, a driven gear, a pull rod, a buffer plate, and a fixed seat. The rotating rod passes through part of the driving module and is threadedly connected to part of the driving module. The rotating rod passes through the driven gear and the top of the fixed seat in turn and is rotatably connected to the pull rod. The rotating rod and the driven gear are threadedly connected. The driven gear is meshed with the output part of the driving module. The driven gear is rotatably connected to the top of the fixed seat. The fixed seat is fixedly connected to the inlet connector. The pull rod is inserted into the inlet connector and is hinged at one end of the buffer plate. The other end of the buffer plate is hinged to the inner wall surface of the inlet connector.

[0021] 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 the largest; 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 more, the resistance to the flow of the medium becomes smaller, protecting the ball from the impact of the medium while reducing the impact on the flow rate of the medium. 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 is started, it drives the driven gear to rotate, and the driven gear and the rotating rod are threadedly connected, so that the rotating rod rises, the rotating rod drives the pull rod, and the pull rod pulls the buffer plate. When the ball valve is fully opened, the buffer plate is parallel to the flow direction of the medium, so that the resistance of the medium to the buffer plate is minimized when the medium flows, which is convenient for the rapid circulation of the medium.

[0022] Furthermore, the driving module includes a driving motor, a fixing plate and a transmission gear, the output shaft of the driving motor is fixedly connected to the valve stem, the fixing plate is welded to the driving motor, the fixing plate is threadedly connected to the rotating rod, the transmission gear is welded to the output shaft of the driving motor, the transmission gear is meshed with the driven gear, and the driving motor is electrically connected to the driving switch.

[0023] After 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 degrees to open the ball valve. At the same time, the transmission gear on the output shaft drives the driven gear to rotate to realize the rise of the rotating rod; when the drive switch is turned off, the output shaft of the drive motor automatically resets, drives the ball to rotate through the valve stem, and closes the ball valve.

[0024] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes automatic pressure relief of the ball valve during the process of increasing medium pressure by setting the medium pressure value for continuous triggering and starting 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; 2. The third pressure relief assembly, the fourth pressure relief assembly and the fifth pressure relief assembly of the present invention all realize adaptive adjustment in the pressure relief process through the lever principle. As the medium pressure continues to increase, the first block is continuously pressed down until the first rotating plate is stable, and then the second block is continuously pressed down until the second rotating plate is stable, and then the third block is continuously pressed down until the drive switch is turned on, the drive motor is started to open the ball valve, and after the pressure is relieved to the set value, under the gravity of the third counterweight block, the end of the third plug on the third rotating plate rises, the drive switch is released, and the output shaft of the drive motor rotates and resets to close the ball valve; 3. In the present invention, 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 the largest; 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 is opened more, the resistance to the flow of the medium decreases, thereby protecting the ball from the impact of the medium and reducing the impact on the flow rate of the medium. When the ball valve is fully opened, the buffer plate is parallel to the flow direction of the medium, so that the resistance of the medium to the buffer plate is minimized when the medium flows, thereby facilitating the rapid circulation of the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall appearance structure of a high-safety ball valve capable of automatic pressure relief according to the present invention; Figure 2 A schematic cross-sectional structure diagram of a high-safety ball valve capable of automatically releasing pressure according to the present invention; Figure 3 Another cross-sectional structural schematic diagram of a high-safety ball valve capable of automatically releasing pressure according to the present invention; Figure 4 This is a schematic structural diagram of a buffer assembly of a high-safety ball valve capable of automatically releasing pressure according to the present invention; Figure 5 This is a schematic structural diagram of a driving module of a high-safety ball valve capable of automatic pressure relief according to the present invention; Figure 6 for Figure 2 A schematic diagram of a local A enlargement; Figure 7 for Figure 2 A partial enlarged schematic diagram of B; Figure 8 for Figure 2 A schematic diagram of a partial C enlargement.

[0026] In the figure: 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 groove; 52, fourth groove; 53, fifth groove; 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 slot; 112, third slot; 113, rotating rod; 114, driven gear; 115, pulling rod; 116, buffer plate; 117, fixed seat; 121, drive motor; 122, fixed plate; 123, transmission gear. DETAILED DESCRIPTION

[0027] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0028] Example: Figure 1 - Figure 8 As shown, the present invention provides a high-safety ball valve technical solution that can automatically release pressure: like Figure 1 to Figure 3As shown, 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, wherein the connecting rod 15 passes through the inlet connector 1, the intermediate valve seat 14 and the outlet connector 5 in sequence, and the two ends of the connecting rod 15 are respectively threadedly connected to the nuts, the inlet valve seat 2 is clamped at the outlet end of the inlet connector 1, the outlet valve seat 3 is clamped at the inlet end of the outlet connector 5, the ball 4 is clamped between the inlet valve seat 2 and the outlet valve seat 3, and the valve stem 13 is inserted into the upper of the intermediate valve seat 14 and the ball 4. The end is connected with a flat key, the central rotation axis of the valve stem 13 and the sphere 4 coincides, the output part of the drive module 12 is fixedly connected to the top of the valve stem 13, the buffer component 11 is inserted into the inlet connector 1, the buffer component 11 and the inlet connector 1 are movably connected, the buffer component 11 and a part of the drive module 12 are threadedly connected, the output part of the buffer component 11 and the drive module 12 are meshed, the first pressure relief component 6 and the second pressure relief component 7 are arranged in the inlet connector 1, and are movably connected to the inlet connector 1, the third pressure relief component 8, the fourth pressure relief component 9 and the fifth pressure relief component 10 are arranged in the outlet connector 5, and are movably connected to the outlet connector 5, and the fifth pressure relief component 10 is electrically connected to the drive module 12.

[0029] The pressure values ​​required to open the first pressure relief component 6, the second pressure relief component 7, the third pressure relief component 8, the fourth pressure relief component 9 and the fifth pressure relief component 10 increase in sequence. When the first pressure relief component 6 is stably opened, the second pressure relief component 7 begins to open; when the second pressure relief component 7 is stably opened, the third pressure relief component 8 begins to open; when the third pressure relief component 8 is stably opened, the fourth pressure relief component 9 begins to open; after the fourth pressure relief component 9 is stably opened, the fifth pressure relief component 10 is fully opened; 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 medium pressure 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 enters the middle valve seat 14 through the first pressure relief component 6. The medium flows to the second pressure relief component 7, the fourth pressure relief component 9 and the fifth pressure relief component 10 through the middle valve seat 14 respectively. The pressure value continues to increase and reaches the pressure value required for the second pressure relief component 7 to open. The medium passes through the second pressure relief component 6 and flows to the middle valve seat 14. The pressure component 7 enters the outlet connector 5 and is discharged from the outlet connector 5; the pressure value continues to increase and reaches the pressure value required for the third pressure relief component 8 to open, and the medium flows from the inlet connector 1 through the third pressure relief component 8 into the middle valve seat 14, and then flows into the outlet connector 5 through the second pressure relief component 7; the pressure value continues to increase and reaches the pressure value required for the fourth pressure relief component 9 to open, and the medium in the middle valve seat 14 flows into the outlet connector 5 through the second pressure relief component 7 and the fourth pressure relief component 9; the pressure value continues to increase and reaches the pressure value required for the fifth pressure relief component 10 to open When the fifth pressure relief component 10 is fully opened, the driving module 12 starts and rotates the ball 4 to make the inlet connector 1 and the outlet connector 5 fully connected for rapid pressure relief. At the same time, the driving module 12 drives the buffer component 11 to move. The buffer component 11 blocks part of the ball 4 when the ball valve is closed. When the ball valve is opened, it gradually shrinks to reduce the obstruction to the medium flowing from the inlet connector 1 to the outlet connector 5, thereby achieving rapid pressure relief and 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.

[0030] like Figure 2 , Figure 3 and Figure 6 As shown, a first groove 111 and a third groove 112 are provided in the inlet connector 1, the first groove 111 connects the inlet connector 1 and the middle valve seat 14, the first pressure relief assembly 6 is provided in the first groove 111, the first pressure relief assembly 6 and the first groove 111 are connected, the third groove 112 connects the inlet connector 1 and the middle valve seat 14, the third pressure relief assembly 8 is provided in the third groove 112, and the third pressure relief assembly 8 and the third groove 112 are rotatably connected.

[0031] The first groove 111 and the third groove 112 provide two different pressure relief paths for connecting the inlet connector 1 to the intermediate valve seat 14. The first pressure relief component 6 and the third pressure relief component 8 respectively block the first groove 111 and the third groove 112 in the initial state, so that the medium cannot flow into the intermediate valve seat 14, thereby ensuring the sealing of the ball valve. When the medium pressure 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, and the medium flows into the intermediate valve seat 14 through the first pressure relief component 6 and the third pressure relief component 8.

[0032] like Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the outlet connecting body 5 is provided with a second groove 51, a fourth groove 52 and a fifth groove 53, the second groove 51 connects the outlet connecting body 5 and the middle valve seat 14, the second pressure relief assembly 7 is arranged in the second groove 51, the second pressure relief assembly 7 is connected to the second groove 51, the fourth groove 52 connects the outlet connecting body 5 and the middle valve seat 14, the fourth pressure relief assembly 9 is arranged in the fourth groove 52, the fourth pressure relief assembly 9 and the fourth groove 52 are rotatably connected, the fifth groove 53 is connected to the middle valve seat 14, the fifth pressure relief assembly 10 is arranged in the fifth groove 53, and the fifth pressure relief assembly 10 and the fifth groove 53 are rotatably connected.

[0033] The second groove 51 and the fourth groove 52 provide two different pressure relief paths for the outlet connector 5 to be connected to the intermediate valve seat 14. The second pressure relief component 7 and the fourth pressure relief component 9 respectively block the second groove 51 and the fourth groove 52 in the initial state, so that the medium cannot flow into the outlet connector 5, thereby 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 connector 5 through the second pressure relief component 7 and the fourth pressure relief component 9, and is then discharged through the outlet connector 5. When the fourth pressure relief component 9 opens stably, the fifth pressure relief component 10 is fully opened.

[0034] like Figure 3 As shown, 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 groove 111, 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 the upper and lower end surfaces are both inclined surfaces, and the first slider 62 is slidably connected to the first groove 111.

[0035] In the initial state, the first slider 62 completely blocks the first groove 111, and the medium cannot flow from the inlet connector 1 into the middle valve seat 14 through the first groove 111. The other end of the first slider 62 is conical, and the upper and lower end surfaces are both inclined surfaces. When the medium reaches the set pressure value, it is easier to push the first slider 62 to compress the first spring 61, open the first groove 111, and connect the inlet connector 1 and the middle valve seat 14.

[0036] like Figure 3 As shown, 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 groove 51, 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 the upper and lower end surfaces are both inclined surfaces, and the second slider 72 is slidably connected to the second groove 51.

[0037] In the initial state, the second slider 72 completely blocks the second groove 51, and the medium cannot flow from the middle valve seat 14 into the outlet connector 5 through the second groove 51. When the compression amount of the first spring 61 is stable, the medium pushes the second slider 72 to compress the second spring 71, open the second groove 51, and connect the outlet connector 5 and the middle valve seat 14.

[0038] like Figure 6 As shown, the third pressure relief assembly 8 includes a first blocking block 81, a first rotating plate 82 and a first counterweight block 83, the first blocking block 81 is arranged on a side of the first rotating plate 82 facing the inlet connector 1, the first blocking block 81 is fixedly connected to one end of the first rotating plate 82, the first counterweight block 83 is fixedly connected to the other end of the first rotating plate 82, the first counterweight block 83 and the first blocking block 81 are arranged on the same end face of the first rotating plate 82, the first counterweight block 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 arranged in the third groove 112, the first rotating plate 82 is rotatably connected to the third groove 112 at the center point in the long axis direction, and the surrounding end faces of the first rotating plate 82 are sealed and fitted with the surrounding walls of the third groove 112.

[0039] In the initial state, the first counterweight block 83 relies on its own gravity to cause the end of the first rotating plate 82 where the first blocking block 81 is located to tilt up, and the first blocking block 81 completely blocks the entrance of the third groove 112. When the compression amount of the second spring 71 is stable, the medium begins to press down on the first blocking block 81, causing the end of the first rotating plate 82 where the first counterweight block 83 is located to tilt up, and the first blocking block 81 no longer blocks the entrance of the third groove 112. The medium flows into the middle valve seat 14 through the through hole on the first counterweight block 83 and the third groove 112.

[0040] like Figure 7As shown, the fourth pressure relief assembly 9 includes a second blocking block 91, a second rotating plate 92 and a second counterweight block 93, the second blocking block 91 is arranged on a side of the second rotating plate 92 facing the inside of the outlet connector 5, one end of the second blocking block 91 and the second rotating plate 92 is fixedly connected, the second counterweight block 93 and the second blocking block 91 are arranged on the same end face of the second rotating plate 92, the second counterweight block 93 is provided with a through hole in the same direction as the long axis of the second rotating plate 92, the second counterweight block 93 and the other end of the second rotating plate 92 are fixedly connected, the second rotating plate 92 is arranged in the fourth groove 52, the second rotating plate 92 is rotatably connected to the third groove 112 in the long axis direction away from the center point close to the second counterweight block 93, and the surrounding end faces of the second rotating plate 92 are sealed and fitted with the surrounding walls of the fourth groove 52.

[0041] In the initial state, the second counterweight block 93 relies on its own gravity to make the end of the second rotating plate 92 where the second blocking block 91 is located tilted, and the second blocking block 91 completely blocks the entrance of the fourth groove 52. When the first rotating plate 82 tends to be stable and no longer rotates, the medium begins to press down the second blocking block 91, causing the end of the second rotating plate 92 where the second counterweight block 93 is located to tilt, and the second blocking block 91 no longer blocks the entrance of the fourth groove 52. The medium in the middle valve seat 14 flows into the outlet connector 5 through the through hole on the second counterweight block 93 and the fourth groove 52.

[0042] like Figure 8 As shown, the fifth pressure relief assembly 10 includes a third block 101, a third rotating plate 102, a third counterweight 103 and a drive switch 104, wherein the third block 101 is arranged on a surface of the third rotating plate 102 facing the inside of the outlet connector 5, the third block 101 is fixedly connected to one end of the third rotating plate 102, the third counterweight 103 and the third block 101 are arranged on the same end surface of the third rotating plate 102, the third counterweight 103 is fixedly connected to the other end of the third rotating plate 102, and the third The third rotating plate 102 is arranged in the fifth groove 53, and the third rotating plate 102 is rotatably connected to the fifth groove 53 at the center point in the long axis direction. The surrounding end faces of the third rotating plate 102 are sealed and fitted with the surrounding walls of the fifth groove 53. The driving switch 104 is fixedly connected to the fifth groove 53. The driving switch 104 is located below the third blocking block 101. The third rotating plate 102 separates the driving switch 104 from the third blocking block 101, and the driving switch 104 is electrically connected to the driving module 12.

[0043] In the initial state, the third counterweight 103 relies on its own gravity to make the end of the third blocking block 101 on the third rotating plate 102 tilt up, and the third blocking block 101 completely blocks the entrance of the fifth groove 53. When the second rotating plate 92 tends to be stable and no longer rotates, the medium begins to press the third blocking block 101 downward, causing the end of the third counterweight 103 on the third rotating plate 102 to tilt up, and the third rotating plate 102 at one end of the third blocking block 101 continues to descend until the driving switch 104 is pressed. The third blocking block 101 always blocks the entrance of the fifth groove 53. After the driving switch 104 is turned on, the driving module 12 is started, the valve stem 13 drives the ball 4 to rotate, and the ball valve is opened. When the medium pressure is less than the pressure of the third counterweight 103, one end of the third blocking block 101 on the third rotating plate 102 tilts up, the driving switch 104 is released, the driving module 12 is reset, and the valve stem 13 rotates the ball 4 to close the ball valve.

[0044] like Figure 3 and Figure 4 As shown, 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 driving module 12 and is threadedly connected to part of the driving module 12. The rotating rod 113 passes through the driven gear 114 and the top of the fixed seat 117 in turn 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 is meshed with the output part of the driving module 12. The driven gear 114 is rotatably connected to the top of the fixed seat 117. The fixed seat 117 is fixedly connected to the inlet connector 1. The pull rod 115 is inserted into the inlet connector 1 and is hinged at one end of the buffer plate 116. The other end of the buffer plate 116 is hinged to the inner wall surface of the inlet connector 1.

[0045] 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 the largest; 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 is opened more, the resistance to the flow of the medium becomes smaller, protecting the ball 4 from the impact of the medium while reducing the impact on the flow rate 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, so that the rotating rod 113 rises, and 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 opened, the buffer plate 116 is parallel to the flow direction of the medium, so that the resistance of the medium to the buffer plate 116 is minimized when the medium flows, which facilitates the rapid circulation of the medium.

[0046] like Figure 1 and Figure 5As shown, 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 and the rotating rod 113 are threadedly connected, the transmission gear 123 and the output shaft of the drive motor 121 are welded, the transmission gear 123 and the driven gear 114 are meshed, and the drive motor 121 and the drive switch 104 are electrically connected.

[0047] After the drive switch 104 is turned on, the drive motor 121 is started, and the output shaft of the drive motor 121 drives the valve stem 13 to rotate 90 degrees to open the ball valve. At the same time, the transmission gear 123 on the output shaft drives the driven gear 114 to rotate, thereby realizing the rise of the rotating rod 113; when the drive switch 104 is turned off, the output shaft of the drive motor 121 automatically resets, drives the ball 4 to rotate through the valve stem 13, and closes the ball valve.

[0048] The working principle of the present invention is as follows: the pressure values ​​required to open the first pressure relief component 6, the second pressure relief component 7, the third pressure relief component 8, the fourth pressure relief component 9 and the fifth pressure relief component 10 are increased in sequence, and the second pressure relief component 7 starts to open when the first pressure relief component 6 is stably opened; the third pressure relief component 8 starts to open when the second pressure relief component 7 is stably opened; the fourth pressure relief component 9 starts to open when the third pressure relief component 8 is stably opened; the fifth pressure relief component 10 is fully opened after the fourth pressure relief component 9 is stably opened; 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 medium pressure 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 enters the middle valve seat 14 through the first pressure relief component 6. The medium flows to the second pressure relief component 7, the fourth pressure relief component 9 and the fifth pressure relief component 10 through the middle valve seat 14 respectively. When 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 connector 5 through the second pressure relief component 7 and is discharged from the outlet connector 5; when 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 connector 1 through the third pressure relief component 8 into the middle valve seat 14, and then flows into the outlet connector 5 through the second pressure relief component 7; when the third pressure relief component 8 is stably opened, the fourth pressure relief component 9 begins to open, and the medium in the middle valve seat 14 flows into the outlet connector 5 through the second pressure relief component 7 and the fourth pressure relief component 9; when the fourth pressure relief component 9 is stably opened, the fifth pressure relief component 1 0 starts to open. When the fifth pressure relief assembly 10 is fully opened, the driving module 12 is started and the ball 4 is rotated to make the inlet connector 1 and the outlet connector 5 fully connected to perform rapid pressure relief. At the same time, the driving module 12 drives the buffer assembly 11 to move. The buffer assembly 11 blocks part of the ball 4 when the ball valve is closed. When the ball valve is opened, it gradually shrinks to reduce the obstruction to the medium flowing from the inlet connector 1 to the outlet connector 5, thereby achieving rapid pressure relief and 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.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-safety ball valve capable of automatic pressure relief, characterized in that: The ball valve comprises 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), wherein the connecting rod (15) passes through the inlet connector (1), the intermediate valve seat (14) and the outlet connector (5) in sequence, and both ends of the connecting rod (15) are respectively threadedly connected to nuts, the inlet valve seat (2) is clamped at the outlet end of the inlet connector (1), the outlet valve seat (3) is clamped at the inlet end of the outlet connector (5), the ball (4) is clamped between the inlet valve seat (2) and the outlet valve seat (3), and the valve stem (13) is inserted into the intermediate valve seat (14) and The upper end of the sphere (4) is connected with a flat key, the central rotation axis of the valve stem (13) and the sphere (4) coincide, the output portion of the drive module (12) is fixedly connected to the top of the valve stem (13), the buffer component (11) is inserted into the inlet connector (1), the buffer component (11) and the inlet connector (1) are movably connected, the buffer component (11) and a part of the drive module (12) are threadedly connected, the output portion of the buffer component (11) and the drive module (12) are meshed, the first pressure relief component (6) and the second pressure relief component (7) are arranged in the inlet connector (1) and are movably connected to the inlet connector (1), the third pressure relief component (8), the fourth pressure relief component (9) and the fifth pressure relief component (10) are arranged in the outlet connector (5) and are movably connected to the outlet connector (5), and the fifth pressure relief component (10) and the drive module (12) are electrically connected.

2. A high-safety ball valve capable of automatic pressure relief according to claim 1, characterized in that: The inlet connecting body (1) is provided with a first groove (111) and a third groove (112); the first groove (111) connects the inlet connecting body (1) and the intermediate valve seat (14); the first pressure relief component (6) is arranged in the first groove (111); the first pressure relief component (6) and the first groove (111) are connected; the third groove (112) connects the inlet connecting body (1) and the intermediate valve seat (14); the third pressure relief component (8) is arranged in the third groove (112); the third pressure relief component (8) and the third groove (112) are rotatably connected.

3. A high-safety ball valve capable of automatic pressure relief according to claim 2, characterized in that: The outlet connecting body (5) is provided with a second groove (51), a fourth groove (52) and a fifth groove (53); the second groove (51) connects the outlet connecting body (5) and the intermediate valve seat (14); the second pressure relief assembly (7) is arranged in the second groove (51); the second pressure relief assembly (7) and the second groove (51) are connected; the fourth groove (52) connects the outlet connecting body (5) and the intermediate valve seat (14); the fourth pressure relief assembly (9) is arranged in the fourth groove (52); the fourth pressure relief assembly (9) and the fourth groove (52) are rotatably connected; the fifth groove (53) and the intermediate valve seat (14) are connected; the fifth pressure relief assembly (10) is arranged in the fifth groove (53); the fifth pressure relief assembly (10) and the fifth groove (53) are rotatably connected.

4. A high-safety ball valve capable of automatically releasing pressure according to claim 3, characterized in that: The first pressure relief assembly (6) comprises a first spring (61) and a first slider (62); one end of the first spring (61) is fixedly connected to the first groove (111); 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 the upper and lower end surfaces are both inclined surfaces; the first slider (62) is slidably connected to the first groove (111).

5. A high-safety ball valve capable of automatically releasing pressure according to claim 4, characterized in that: The second pressure relief assembly (7) comprises a second spring (71) and a second slider (72); one end of the second spring (71) is fixedly connected to the second groove (51); 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 surfaces are inclined surfaces; the second slider (72) is slidably connected to the second groove (51).

6. A high-safety ball valve capable of automatically releasing pressure according to claim 5, characterized in that: The third pressure relief assembly (8) comprises a first blocking block (81), a first rotating plate (82) and a first counterweight (83); the first blocking block (81) is arranged on a surface of the first rotating plate (82) facing the inside of the inlet connector (1); the first blocking block (81) is fixedly connected to one end of the first rotating plate (82); the first counterweight (83) is fixedly connected to the other end of the first rotating plate (82); the first counterweight (83) and the first blocking block (81) are arranged on the same end surface of the first rotating plate (82); a through hole in the same direction as the long axis of the first rotating plate (82) is arranged on the first counterweight (83); the first rotating plate (82) is arranged in the third groove (112); the first rotating plate (82) is rotatably connected to the third groove (112) at a center point in the long axis direction; the peripheral end surfaces of the first rotating plate (82) are sealed and fitted with the peripheral wall surfaces of the third groove (112).

7. A high-safety ball valve capable of automatically releasing pressure according to claim 6, characterized in that: The fourth pressure relief assembly (9) comprises a second blocking block (91), a second rotating plate (92) and a second counterweight block (93); the second blocking block (91) is arranged on a surface of the second rotating plate (92) facing the inside of the outlet connector (5); one end of the second blocking block (91) and the second rotating plate (92) are fixedly connected; the second counterweight block (93) and the second blocking block (91) are arranged on the same end surface of the second rotating plate (92); a through hole in the same direction as the long axis of the second rotating plate (92) is arranged on the second counterweight block (93); the other end of the second counterweight block (93) and the second rotating plate (92) are fixedly connected; the second rotating plate (92) is arranged in the fourth groove (52); the second rotating plate (92) is rotatably connected to the third groove (112) at a position close to the second counterweight block (93) and deviating from the center point in the long axis direction; the peripheral end surfaces of the second rotating plate (92) are sealed and fitted with the peripheral wall surfaces of the fourth groove (52).

8. A high-safety ball valve capable of automatically releasing pressure according to claim 7, characterized in that: The fifth pressure relief assembly (10) comprises a third blocking block (101), a third rotating plate (102), a third counterweight block (103) and a drive switch (104); the third blocking block (101) is arranged on a surface of the third rotating plate (102) facing the inside of the outlet connector (5); one end of the third blocking block (101) and the third rotating plate (102) are fixedly connected; the third counterweight block (103) and the third blocking block (101) are arranged on the same end surface of the third rotating plate (102); the other end of the third counterweight block (103) and the third rotating plate (102) are fixedly connected; The rotating plate (102) is arranged in the fifth groove (53); the third rotating plate (102) is rotatably connected to the fifth groove (53) at the center point in the long axis direction; the peripheral end surfaces of the third rotating plate (102) are sealed and fitted with the peripheral wall surfaces of the fifth groove (53); the driving switch (104) is fixedly connected to the fifth groove (53); the driving switch (104) is located below the third blocking block (101); the third rotating plate (102) separates the driving switch (104) from the third blocking block (101); and the driving switch (104) is electrically connected to the driving module (12).

9. A high-safety ball valve capable of automatically releasing pressure according to claim 8, characterized in that: The buffer assembly (11) comprises 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 a portion of the driving module (12) and is threadedly connected to a portion of the driving module (12); the rotating rod (113) passes through the driven gear (114) and the top end 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) and the output portion of the driving module (12) are meshed; the driven gear (114) and the top end 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 the inlet connector (1) and is hinged to one end of the buffer plate (116); and the other end of the buffer plate (116) is hinged to the inner wall surface of the inlet connector (1).

10. A high-safety ball valve capable of automatically releasing pressure according to claim 9, characterized in that: The drive module (12) comprises 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) and the output shaft of the drive motor (121) are welded; the transmission gear (123) and the driven gear (114) are meshed; and the drive motor (121) and the drive switch (104) are electrically connected.

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