Gas-liquid linkage quick-closing valve system

Abstract

The invention discloses a gas-liquid linkage quick-closing valve system and relates to the technical field of valves, the gas-liquid linkage quick-closing valve system comprises a valve seat, a valve element arranged in the valve seat and a valve rod fixedly connected with the valve element, a hydraulic seat is fixedly connected to the top of the valve seat, and a transmission gear is rotationally connected to the position, located on the surface of the valve rod, in the hydraulic seat; the transmission cavity is formed in the valve seat, the connecting rod is installed in the passage cavity, the blocking valve plate is installed on the connecting rod, when the valve element rotates in the passage cavity, the transmission rod can be driven to rotate, and under the action of the first gear and the second gear, the valve element rotates to drive the connecting rod to rotate synchronously; the blocking valve plate is driven to synchronously rotate in the channel cavity and synchronously open and close the channel of the channel cavity with the valve element, the channel cavity is blocked in a multi-stage mode, the situation that when a single valve element is used, damage occurs or a sealing piece is damaged, and consequently the whole valve is used, is solved is avoided, and the sealing safety and stability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and particularly to a gas-liquid linkage quick-closing valve system. Background Art

[0002] The working principle of a gas-liquid linkage ball valve is to use gas and liquid as power sources to control the opening and closing of the valve. Usually, natural gas or independent gas supply is used as the power, and hydraulic oil is used as the transmission medium.

[0003] Currently, there are still certain problems when using a gas-liquid linkage ball valve. For example, both gas-liquid linkage valves and other valve types on the market generally use a single-stage valve core seal. During long-term use, once there is a problem with the valve core, such as valve core wear or damage to the valve core sealing component, the valve will have poor sealing and result in liquid leakage, with limited reliability and stability. At the same time, after long-term use of traditional gas-liquid linkage ball valves, since gas-liquid linkage ball valves mostly require a piston to drive the valve stem of the gas-liquid linkage ball valve to rotate through a transmission structure, during long-term use, if mechanical components inside the actuator are stuck due to factors such as wear and dust ingress, such as gears, racks, drive shafts, etc., when these mechanical components are stuck, the actuator cannot operate normally, and the actuator and the valve stem are usually connected or linked to each other. The jamming of the actuator will prevent the normal rotation of the valve stem, resulting in difficulty or even inability to rotate the valve stem when manually closing the valve. Summary of the Invention

[0004] The purpose of the present invention is to provide a gas-liquid linkage quick-closing valve system to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: It includes a valve seat, a valve core arranged inside the valve seat, and a valve stem fixedly connected to the valve core. A hydraulic seat is fixedly connected to the top of the valve seat. Inside the hydraulic seat and on the surface of the valve stem, a transmission gear is rotatably connected. A hydraulic driving mechanism that cooperates with the transmission gear is arranged inside the hydraulic seat. A gas source driving mechanism is arranged at one end of the hydraulic seat away from the valve seat. A passage cavity is opened inside the valve seat, and the valve core is located in the circular groove of the passage cavity and is slidably connected to the passage cavity. A transmission cavity is opened inside the valve seat. Inside the passage cavity, blocking valve plates are symmetrically arranged. On the opposite sides of the two blocking valve plates, connecting rods are fixedly connected. The connecting rods are rotatable with the inner wall of the passage cavity. One end of the connecting rod penetrates into the transmission cavity and is fixedly sleeved with a first gear. A transmission rod is fixedly connected to the bottom of the valve core. One end of the transmission rod penetrates into the transmission cavity and is fixedly sleeved with a second gear. The second gear and the first gear are in transmission connection.

[0006] In a further embodiment, a connection groove is formed inside the valve stem, a lead screw is rotatably disposed inside the connection groove, a connection block is screwed onto the surface of the lead screw, a limiting block is fixedly connected to the surface of the connection block, and a limiting groove engaged with the limiting block is formed on the surface of the transmission gear.

[0007] In a further embodiment, the hydraulic driving mechanism includes two piston blocks, two transmission blocks disposed between the two piston blocks, a transmission rack fixedly connected between the two transmission blocks and engaged with the transmission gear, and hydraulic oil filled between the piston blocks and the transmission blocks. The piston block is slidably connected to the hydraulic seat.

[0008] In a further embodiment, the gas source driving mechanism includes a gas source tank, a pump body disposed at the bottom of the gas source tank, and an air extraction pipe and a three-way pipe for gas source transmission. Two ends of the air extraction pipe are respectively communicated with the gas source tank and the input end of the pump body. The main pipe of the three-way pipe is communicated with the output end of the pump body. Two branch pipes of the three-way pipe are respectively communicated with two ends of the hydraulic seat.

[0009] In a further embodiment, an air outlet pipe is communicated with the surface of the gas source tank and located at the top of the gas source tank, and a valve is installed on the surface of the air outlet pipe. A pressure gauge is installed on the surface of the gas source pipe and located at the top of the gas source tank. Solenoid valves are installed on the surfaces of two branch pipes of the three-way pipe. Connecting flanges are assembled at both ends of the valve seat. Return air pipes are communicated between both ends of the hydraulic seat and the gas source tank.

[0010] In a further embodiment, a fixed bracket is assembled on the surface of the gas source tank, a limiting bracket is fixedly connected to the bottom of the fixed bracket, the limiting bracket is fixedly connected to the surface of the pump body, and the fixed bracket is fixedly connected to a side of the hydraulic seat away from the valve seat.

[0011] In a further embodiment, one end of the valve stem penetrates to the outside of the valve seat and is fixedly sleeved with a first rotating handle, and one end of the lead screw penetrates to the outside of the valve stem and is fixedly sleeved with a second rotating handle.

[0012] In a further embodiment, a through chute is formed on the surface of the valve stem, the through chute is communicated with the connection groove, and the through chute is slidably connected with the limiting block.

[0013] In a further embodiment, first sealing rings are symmetrically assembled inside the passage cavity, the first sealing rings are used in cooperation with the valve core, second sealing rings are assembled on the surface of the blocking valve plate, and the second sealing rings are used in cooperation with the passage cavity.

[0014] In a further embodiment, the valve stem is rotatably connected to the valve seat, and a third sealing ring used in cooperation with the valve stem is assembled inside the valve seat at the connection with the valve stem. Fourth sealing rings are assembled on the surfaces of the connecting rod and the transmission rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, a transmission cavity is provided inside the valve seat, a connecting rod is installed inside the passage cavity, and a blocking valve plate is installed on the connecting rod. When the valve core rotates inside the passage cavity, it drives the transmission rod to rotate. Under the action of the first gear and the second gear, the rotation of the valve core drives the connecting rod to rotate synchronously, and then drives the blocking valve plate to rotate synchronously inside the passage cavity, and works to open and close the passage of the passage cavity synchronously with the valve core. The passage cavity is blocked in a multi-stage manner, avoiding problems in the use of the entire valve caused by damage to a single valve core or damage to the seal, and improving the safety and stability of the seal.

[0016] 2. In the present invention, a connection groove is provided inside the valve stem, and a lead screw is installed inside the connection groove. When the lead screw is rotated, it can drive the connection block to adjust its height inside the connection groove, so that the connection block drives the limit block to adjust its height. When the limit block disengages from the limit groove on the transmission gear, the limit between the transmission gear and the valve stem is lost. When the valve has a stuck fault such as gears, racks, and transmission shafts, the valve stem can be rotated smoothly to prevent the valve stem from being stuck and unable to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present invention; Figure 2 is a partial structural cross-sectional view of an embodiment of the present invention; Figure 3 is a structural cross-sectional view of the valve seat of an embodiment of the present invention; Figure 4 is an exploded view of the valve stem and the transmission gear of an embodiment of the present invention; Figure 5 is a structural cross-sectional view of the valve stem of an embodiment of the present invention.

[0018] In the figure: 1, valve seat; 2, valve core; 3, valve stem; 4, hydraulic seat; 5, transmission gear; 6, hydraulic drive mechanism; 61, piston block; 62, transmission block; 63, transmission gear plate; 64, hydraulic oil; 7, air source drive mechanism; 71, air source tank; 72, pump body; 73, air extraction pipe; 74, three-way pipe; 8, passage chamber; 9, transmission chamber; 10, blocking valve plate; 11, connecting rod; 12, first gear; 13, transmission rod; 14, first gear; Two gears; 15. Connecting groove; 16. Screw rod; 17. Connecting block; 18. Limiting block; 19. Limiting groove; 20. Air pipe; 21. Pressure gauge; 22. Solenoid valve; 23. Connecting flange; 24. Fixed bracket; 25. Limiting bracket; 26. First rotating handle; 27. Second rotating handle; 28. Through slide groove; 29. ​​First sealing ring; 30. Second sealing ring; 31. Third sealing ring; 32. Fourth sealing ring; 33. Air return pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] A gas-liquid linkage quick-closing valve system comprises a valve seat 1, a valve core 2 arranged inside the valve seat 1, and a valve stem 3 fixedly connected to the valve core 2. A hydraulic seat 4 is fixedly connected to the top of the valve seat 1. A transmission gear 5 is rotatably connected to the inside of the hydraulic seat 4 and located on the surface of the valve stem 3. A hydraulic drive mechanism 6 used in conjunction with the transmission gear 5 is arranged inside the hydraulic seat 4. An air source drive mechanism 7 is arranged at one end of the hydraulic seat 4 away from the valve seat 1. A passage cavity 8 is opened inside the valve seat 1, and the valve core 2 is located in a circular groove of the passage cavity 8 and is slidably connected to the passage cavity 8. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in the present application, the valve core 2 is installed in the passage cavity 8 inside the valve seat 1. The valve core 2 can open and close the passage of the passage cavity 8 inside the valve core 2. The valve stem 3 is installed on the valve core 2. The valve stem 3 is rotatably connected to the valve seat 1 and one end of the valve stem 3 penetrates to the outside of the valve seat 1. Rotating the valve stem 3 can drive the valve core 2 to rotate in the circular groove inside the passage cavity 8, adjust the passage direction of the valve core 2, and achieve the purpose of adjusting the passage of the passage cavity 8. The hydraulic seat 4 is installed on the top of the valve seat 1 and is used for the installation and fixation of the hydraulic driving mechanism 6. The transmission gear 5 is installed at one end of the valve stem 3 outside the valve seat 1, and the transmission gear 5 is inside the hydraulic seat 4. The transmission gear 5 can be driven by the hydraulic driving mechanism 6 to rotate, achieving the purpose of driving the hydraulic driving mechanism 6 to drive the valve stem 3 to rotate. The air source driving mechanism 7 is designed outside the valve seat 1 and is used to provide an air source for the hydraulic driving mechanism 6, so that the gas is transported into the hydraulic driving mechanism 6, and the pressure of the gas is converted into liquid pressure.

[0021] Further, the hydraulic driving mechanism 6 includes two piston blocks 61, two transmission blocks 62 arranged between the two piston blocks 61, a transmission tooth plate 63 fixedly connected between the two transmission blocks 62 and meshing with the transmission gear 5, and hydraulic oil 64 filled between the piston blocks 61 and the transmission blocks 62. The piston blocks 61 are slidably connected to the hydraulic seat 4. The air source driving mechanism 7 includes an air source tank 71, a pump body 72 arranged at the bottom of the air source tank 71, and an air extraction pipe 73 and a three-way pipe 74 for air source transportation. The two ends of the air extraction pipe 73 are respectively communicated with the air source tank 71 and the input end of the pump body 72. The main pipe of the three-way pipe 74 is communicated with the output end of the pump body 72. The two branch pipes of the three-way pipe 74 are respectively communicated with both ends of the hydraulic seat 4, as Figure 1 and Figure 2As shown in the figure, the air source tank 71 is used to provide air source for the pump body 72. The pump body 72 is used for gas transportation. The suction pipe 73 is installed between the input end of the pump body 72 and the air source tank 71. The suction pipe 73 is used to transport the air source inside the air source tank 71 into the pump body 72. The tee pipe 74 is installed between the pump body 72 and the hydraulic seat 4. After the pump body 72 extracts the gas inside the air source tank 71, the air source can be transported into the hydraulic seat 4 through the branch pipe of the tee pipe 74, so that the gas pressure acts on the piston block 61. The piston block 61 is installed inside the hydraulic seat 4. Two transmission blocks 62 are arranged between the two piston blocks 61, and hydraulic oil 64 is filled between the transmission block 62 and the piston block 61. When external gas is pumped into the hydraulic seat 4 from one end of the hydraulic seat 4, the piston block 61 inside the hydraulic seat 4 can be pushed to move. Through the action of the hydraulic oil 64, the two transmission blocks 62 can be driven to move. The transmission gear plate 63 is installed between the two transmission blocks 62. When the two transmission blocks 62 move, the transmission gear plate 63 can be driven to move. The transmission gear plate 63 meshes with the transmission gear 5, and the movement of the transmission gear plate 63 can drive the transmission gear 5 to rotate, so as to drive the valve stem 3 to rotate, achieving the purpose of quickly opening and closing the valve through gas-liquid linkage.

[0022] More specifically, an air pipe 20 is connected to the surface of the air source tank 71 and is located at the top of the air source tank 71. A valve is installed on the surface of the air pipe 20. A pressure gauge 21 is installed on the surface of the air source pipe and is located at the top of the air source tank 71. Solenoid valves 22 are installed on the surfaces of the two branch pipes of the tee pipe 74. Connecting flanges 23 are assembled at both ends of the valve seat 1. Return air pipes 33 are connected between both ends of the hydraulic seat 4 and the air source tank 71, as Figure 1 、 Figure 2 and Figure 3 shown in the figure. The air pipe 20 is installed on the air source tank 71 and is used for air supplement and air release inside the air source tank 71. The pressure gauge 21 is used to detect the pressure inside the air source tank 71. The solenoid valves 22 are installed on the branch pipes of the tee pipe 74 and are used to control the passage of the air source transported by the pump body 72, controlling the air source to be input from one end of the hydraulic seat 4 through one of the branch pipes of the tee tank, so as to increase the pressure at this end of the hydraulic seat 4, making the piston block 61 move from this end to the other end inside the hydraulic seat 4 under the action of air pressure. The return air pipe 33 is used to recover the gas compressed at the other end of the hydraulic seat 4 into the air source tank 71 to achieve pressure balance. The connecting flanges 23 are installed at both ends of the valve seat 1 and are used to connect external pipelines.

[0023] A transmission cavity 9 is formed inside the valve seat 1. A blocking valve plate 10 is symmetrically arranged inside the passage cavity 8. Connecting rods 11 are fixedly connected to the opposite sides of the two blocking valve plates 10. The connecting rods 11 are rotatable with the inner wall of the passage cavity 8. One end of the connecting rod 11 penetrates into the transmission cavity 9 and is fixedly sleeved with a first gear 12. A transmission rod 13 is fixedly connected to the bottom of the valve core 2. One end of the transmission rod 13 penetrates into the transmission cavity 9 and is fixedly sleeved with a second gear 14. The second gear 14 and the first gear 12 are in transmission connection. As Figure 3 shown, the transmission cavity 9 is used to install the first gear 12 and the second gear 14. The blocking valve plate 10 is designed inside the passage cavity 8. The connecting rod 11 is rotatably connected to the valve seat 1. The blocking valve plate 10 is fixed in the passage cavity 8 through the connecting rod 11. The transmission rod 13 is installed at the bottom of the valve core 2 and penetrates into the transmission cavity 9. When the valve rod 3 rotates to drive the valve core 2 to rotate, the valve core 2 can drive the transmission rod 13 to rotate. The second gear 14 is fixedly connected to the transmission rod 13, and the first gear 12 is fixedly connected to the connecting rod 11. When the valve core 2 drives the transmission rod 13 to rotate, it can drive the second gear 14 to rotate. The rotation of the second gear 14 can drive the first gear 12 to rotate, so that the first gear 12 drives the connecting rod 11 to rotate, achieving the purpose of driving the blocking valve plate 10 to rotate. When the valve core 2 rotates to open and close the valve passage of the passage cavity 8, the blocking valve plate 10 rotates synchronously with the valve core 2, and at the same time closes the valve passage, improving the safety and stability of the seal, and avoiding the situation that when the single-stage valve core 2 is sealed, the valve core 2 wears or the sealing components of the valve core 2 are damaged, and the valve will have poor sealing and cause liquid leakage.

[0024] Furthermore, first sealing rings 29 are symmetrically assembled inside the passage cavity 8. The first sealing rings 29 are used in cooperation with the valve core 2. Second sealing rings 30 are assembled on the surfaces of the blocking valve plates 10. The second sealing rings 30 are used in cooperation with the passage cavity 8. The valve rod 3 is rotatably connected to the valve seat 1. Inside the valve seat 1 and at the connection with the valve rod 3, a third sealing ring 31 is assembled for use in cooperation with the valve rod 3. Fourth sealing rings 32 are assembled on the surfaces of the connecting rods 11 and the transmission rods 13. As Figure 2 shown, the first sealing rings 29 are installed inside the passage cavity 8. The two first sealing rings 29 are respectively on both sides of the surface of the valve core 2, used for sealing between the valve core 2 and the passage cavity 8. The second sealing rings 30 are installed on the surfaces of the blocking valve plates 10. When the blocking valve plates 10 are closed with the passage cavity 8, they can seal between the blocking valve plates 10 and the passage cavity 8. The third sealing ring 31 is installed at the connection between the valve seat 1 and the valve rod 3, used for sealing the valve seat 1 and the valve rod 3. The fourth sealing rings 32 are used for sealing the connections between the connecting rods 11 and the transmission rods 13 and the valve seat 1.

[0025] A connecting groove 15 is formed inside the valve stem 3. A lead screw 16 is rotatably arranged inside the connecting groove 15. A connecting block 17 is screwed onto the surface of the lead screw 16. A limiting block 18 is fixedly connected to the surface of the connecting block 17. A limiting groove 19 engaged with the limiting block 18 is formed on the surface of the transmission gear 5. As Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the connecting groove 15 is formed inside the valve stem 3 and is used for installing the lead screw 16 and the connecting block 17. The lead screw 16 and the valve stem 3 are rotatably connected and can rotate inside the connecting groove 15. The connecting block 17 is screwed onto the surface of the lead screw 16. The limiting block 18 is installed on the surface of the connecting block 17. When the lead screw 16 rotates, the connecting block 17 moves. The movement of the connecting block 17 can drive the limiting block 18 to adjust the height. The limiting groove 19 is formed inside the connecting groove 15 and is fitted with the limiting block 18. When the height of the limiting block 18 is adjusted, it can be disengaged from the limiting groove 19. At this time, the valve stem 3 and the transmission gear 5 lose their limit, and the transmission gear 5 can freely rotate on the surface of the valve stem 3. When the valve stem 3 rotates, it will not drive the transmission gear 5 to rotate, avoiding the jamming faults of gears, racks, transmission shafts, etc. of the valve, and preventing the valve stem 3 from being jammed and unable to rotate.

[0026] Furthermore, a through chute 28 is formed on the surface of the valve stem 3. The through chute 28 communicates with the connecting groove 15. The through chute 28 is slidably connected with the limiting block 18. As Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the through chute 28 is formed on the surface of the valve stem 3 and communicates with the connecting groove 15. The limiting block 18 is slidably connected with the through chute 28. The through chute 28 performs sliding limit on the limiting block 18 and can provide a passage for the limiting block 18 to penetrate to the outside of the valve stem 3.

[0027] Specifically, when external gas is pumped into the hydraulic seat 4 from one end of the hydraulic seat 4, it can drive the transmission gear 5 to rotate through the hydraulic driving mechanism 6 driving the transmission rack 63. The transmission gear 5 can drive the valve stem 3 to rotate, thereby driving the valve core 2 to rotate. The rotation of the valve core 2 drives the blocking valve plate 10 to rotate synchronously under the action of the first gear 12 and the second gear 14, achieving the purpose of closing the valve in multiple stages. And when the valve has jamming faults of gears, racks, transmission shafts, etc. and the hydraulic linkage actuator cannot close the valve, rotate the lead screw 16, the connecting block 17 moves, and the movement of the connecting block 17 can drive the limiting block 18 to adjust the height, so that the limiting block 18 is disengaged from the limiting groove 19, and the valve stem 3 loses the drive of the transmission gear 5, and the valve stem 3 can rotate freely, preventing the valve stem 3 from being jammed and unable to rotate.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas-liquid linkage quick-closing valve system, comprising a valve seat (1), a valve core (2) disposed inside the valve seat (1), and a valve stem (3) fixedly connected to the valve core (2), characterized in that: The top of the valve seat (1) is fixedly connected to a hydraulic seat (4); a transmission gear (5) is rotatably connected to the inside of the hydraulic seat (4) and located on the surface of the valve stem (3); a hydraulic drive mechanism (6) for use with the transmission gear (5) is arranged inside the hydraulic seat (4); an air source drive mechanism (7) is arranged at one end of the hydraulic seat (4) away from the valve seat (1); a passage cavity (8) is provided inside the valve seat (1), and the valve core (2) is located in a circular groove of the passage cavity (8) and is slidably connected to the passage cavity (8); A transmission chamber (9) is provided inside the valve seat (1), and a blocking valve plate (10) is symmetrically arranged inside the passage chamber (8). Two blocking valve plates (10) are fixedly connected to opposite sides of each other with a connecting rod (11), and the connecting rod (11) rotates with the inner wall of the passage chamber (8). One end of the connecting rod (11) penetrates into the transmission chamber (9) and is fixedly sleeved with a first gear (12). A transmission rod (13) is fixedly connected to the bottom of the valve core (2), and one end of the transmission rod (13) penetrates into the transmission chamber (9) and is fixedly sleeved with a second gear (14). The second gear (14) and the first gear (12) are transmission-connected.

2. A gas-liquid linkage fast closing valve system according to claim 1, characterized in that: A connecting groove (15) is provided inside the valve stem (3), a screw rod (16) is rotatably provided inside the connecting groove (15), a connecting block (17) is threadedly connected to the surface of the screw rod (16), a limiting block (18) is fixedly connected to the surface of the connecting block (17), and a limiting groove (19) is provided on the surface of the transmission gear (5) and is engaged with the limiting block (18).

3. The gas-liquid linkage fast closing valve system according to claim 1, characterized in that: The hydraulic drive mechanism (6) comprises two piston blocks (61), two transmission blocks (62) arranged between the two piston blocks (61), a transmission tooth plate (63) fixed between the two transmission blocks (62) and meshing with the transmission gear (5), and hydraulic oil (64) filled between the piston block (61) and the transmission block (62); the piston block (61) is slidably connected to the hydraulic seat (4).

4. The gas-liquid linkage fast closing valve system according to claim 1, characterized in that: The air source driving mechanism (7) comprises an air source tank (71), a pump body (72) arranged at the bottom of the air source tank (71), and an air extraction pipe (73) and a three-way pipe (74) for transporting the air source, wherein the two ends of the air extraction pipe (73) are respectively connected to the air source tank (71) and the input end of the pump body (72), the main pipe of the three-way pipe (74) is connected to the output end of the pump body (72), and the two branches of the three-way pipe (74) are respectively connected to the two ends of the hydraulic seat (4).

5. A gas-liquid linkage fast closing valve system according to claim 4, characterized in that: An air pipe (20) is connected to the surface of the air source tank (71) and located at the top of the air source tank (71), and a valve is installed on the surface of the air pipe (20). A pressure gauge (21) is installed on the surface of the air source pipe and located at the top of the air source tank (71). Solenoid valves (22) are installed on the surfaces of the two branches of the three-way pipe (74). Both ends of the valve seat (1) are equipped with connecting flanges (23). Both ends of the hydraulic seat (4) and the air source tank (71) are connected to a return air pipe (33).

6. A gas-liquid linkage fast closing valve system according to claim 4, characterized in that: A fixed bracket (24) is mounted on the surface of the gas source tank (71), a limit bracket (25) is fixedly connected to the bottom of the fixed bracket (24), the limit bracket (25) is fixedly connected to the surface of the pump body (72), and the fixed bracket (24) is fixedly connected to a side of the hydraulic seat (4) away from the valve seat (1).

7. The gas-liquid linkage fast closing valve system according to claim 2, characterized in that: One end of the valve stem (3) passes through the outside of the valve seat (1) and is fixedly sleeved with a first rotating handle (26), and one end of the screw rod (16) passes through the outside of the valve stem (3) and is fixedly sleeved with a second rotating handle (27).

8. The gas-liquid linkage fast closing valve system according to claim 2, characterized in that: A through slide groove (28) is provided on the surface of the valve stem (3), the through slide groove (28) is communicated with the connecting groove (15), and the through slide groove (28) is slidably connected to the limit block (18).

9. The gas-liquid linkage fast closing valve system according to claim 1, characterized in that: A first sealing ring (29) is symmetrically mounted inside the passage cavity (8), and the first sealing ring (29) is used in conjunction with the valve core (2). A second sealing ring (30) is mounted on the surface of the blocking valve plate (10), and the second sealing ring (30) is used in conjunction with the passage cavity (8).

10. The gas-liquid linkage fast closing valve system according to claim 1, characterized in that: The valve stem (3) and the valve seat (1) are rotatably connected, a third sealing ring (31) for use with the valve stem (3) is installed inside the valve seat (1) and at the connection with the valve stem (3), and a fourth sealing ring (32) is installed on the surfaces of the connecting rod (11) and the transmission rod (13).

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