A container valve

Abstract

The utility model relates to fire fighting equipment technical field especially relates to a container valve for starting gas bottle, driving gas bottle or fire extinguishing agent bottle, including valve body and piston assembly, valve body is provided with valve cavity, starting port, air inlet, gas outlet, pressure detection port, pressure gauge interface and safety relief port with valve cavity intercommunication, starting port sets up in the top of valve body and starting port installs the valve cover pressure relief subassembly, air inlet sets up in the bottom of valve body, and gas outlet, pressure detection port, pressure gauge interface and safety relief port annularly distribute in the lateral wall of valve body, in the up and down projection direction, gas outlet and pressure gauge interface are opposite and set up, and pressure detection port and safety relief port are opposite and set up, gas outlet is provided with anti -mistakenly sprays the device, pressure detection port is provided with pressure sensing device, pressure gauge interface is provided with pressure gauge device, safety relief port is provided with safety relief device, through pressure sensing device real -time monitoring the pressure value in valve, has avoided the occurrence and reduced the manual inspection of accident.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, and in particular to a container valve. Background Technology

[0002] Container valves are critical devices used to seal extinguishing agents and automatically release them in the event of a fire, and are widely used in fire protection systems. Traditional container valves are typically equipped with mechanical or digital pressure gauges to display the internal pressure of the container. However, pressure gauges only reflect the pressure status at the moment of inspection and cannot monitor pressure changes in real time, making it difficult to predict the risk of extinguishing agent leakage or overpressure. Furthermore, they require manual inspections or periodic shutdowns for testing, increasing maintenance costs. Therefore, it is necessary to improve existing technology to address these issues. Utility Model Content

[0003] The purpose of this invention is to provide a container valve that solves the problem of existing container valves being unable to monitor pressure changes in real time.

[0004] To achieve the above objectives, this utility model provides a container valve for starting, driving, or extinguishing agent cylinders, comprising a valve body and a piston assembly; the valve body is provided with a valve cavity and a starting port, an air inlet, an air outlet, a pressure detection port, a pressure gauge interface, and a safety relief port communicating with the valve cavity; the starting port is located at the top of the valve body and is equipped with a valve cover pressure relief assembly; the air inlet is located at the bottom of the valve body and is used to communicate with the extinguishing agent cylinder; the air outlet, pressure detection port, pressure gauge interface, and safety relief port are circumferentially distributed on the side wall of the valve body, with the air outlet and pressure gauge interface facing each other in the vertical projection direction, and the pressure detection port and safety relief port facing each other; the piston assembly can move up and down within the valve cavity to open or close the communication between the air inlet and the air outlet; the air outlet is used to communicate with the extinguishing nozzle and is equipped with an anti-misfire device; the pressure detection port is equipped with a pressure sensing device; the pressure gauge interface is equipped with a pressure gauge device; and the safety relief port is equipped with a safety relief device.

[0005] Furthermore, the pressure sensing device includes a first needle valve, a needle valve pressure plate, a pressure sensor, a control board, and a sensor housing; the pressure detection port includes a first mounting through hole, a second mounting through hole, and a third mounting through hole that gradually enlarge and connect; the first needle valve is threadedly connected to the first mounting through hole; the needle valve pressure plate is disposed in the second mounting through hole and is used to press the first needle valve into the first mounting through hole; the third mounting through hole is provided with internal and external threads; the pressure sensor is threadedly connected to the internal thread of the third mounting through hole and is connected to the first needle valve through a connector; the outer wall of the connector is provided with a first sealing groove, and the first sealing groove is provided with a first sealing ring; the control board is connected to the pressure sensor; the sensor housing covers the control board and is threadedly connected to the external thread of the third mounting through hole.

[0006] Furthermore, the pressure gauge device includes a second needle valve and a pressure gauge. The pressure gauge interface includes a fourth mounting through hole and a fifth mounting through hole that gradually enlarge and communicate with each other. The second needle valve is threaded into the fourth mounting through hole, and the pressure gauge is connected to the second needle valve and mounted in the fifth mounting through hole.

[0007] Furthermore, the safety relief device includes a safety valve and a safety diaphragm. The safety diaphragm is disposed at the safety relief port. The safety valve is threadedly connected to the safety relief port and the safety diaphragm is pressed into the safety relief port by a compression washer. The safety valve is provided with a relief channel communicating with the valve cavity.

[0008] Furthermore, the piston assembly includes a piston body, a return spring, and a sealing gland; the valve cover pressure relief assembly is provided with a downwardly protruding spring mounting seat, the piston body is provided with a downwardly recessed spring mounting groove, one end of the return spring is installed in the spring mounting seat, and the other end is installed in the spring mounting groove; the piston body is also provided with a connecting through hole communicating with the spring mounting groove, and the sealing gland is threadedly connected to the connecting through hole; the diameter of the spring mounting groove is larger than the diameter of the connecting through hole, and the sealing gland is provided with a damping channel communicating with the connecting through hole, the damping channel being gradually narrowed towards the valve cover pressure relief assembly.

[0009] Furthermore, the damping channel includes a first damping through hole, a second damping through hole, a third damping through hole, and a fourth damping through hole that gradually decrease in size and are connected. The first damping through hole is a frustum-shaped structure with a smaller top and a larger bottom, the second damping through hole is a hexagonal prism, the third damping through hole is a large cylinder, and the fourth damping through hole is a small cylinder.

[0010] Furthermore, the outer wall and bottom surface of the piston body are respectively provided with a second sealing groove and a third sealing groove, the second sealing groove is provided with a second sealing ring, and the third sealing groove is provided with a third sealing ring; the outer wall of the sealing gland is provided with a fourth sealing groove, and the fourth sealing groove is provided with a fourth sealing ring.

[0011] Furthermore, the valve cover pressure relief assembly includes a valve cover body, an activation diaphragm, and a pressure relief cover; the valve cover body is threadedly connected to the activation port, the pressure relief cover is threadedly connected to the valve cover body, the valve cover body is provided with a first pressure relief channel communicating with the valve cavity, the pressure relief cover is provided with a second pressure relief channel communicating with the first pressure relief channel, and the activation diaphragm is disposed between the valve cover body and the pressure relief cover and is capable of opening or closing the communication between the first pressure relief channel and the second pressure relief channel.

[0012] Furthermore, the first pressure relief channel includes a first pressure relief through hole, a second pressure relief through hole, a third pressure relief through hole, and a fourth pressure relief through hole; the first pressure relief through hole, the second pressure relief through hole, the third pressure relief through hole, and the fourth pressure relief through hole are all cylindrical, the diameter of the first pressure relief through hole is larger than the diameter of the second pressure relief through hole and smaller than the diameter of the third pressure relief through hole, the diameter of the fourth pressure relief through hole is larger than the diameter of the third pressure relief through hole, the fourth pressure relief through hole is provided with a pressure relief washer, the top surface of the pressure relief washer is provided with a fifth sealing groove, and the fifth sealing groove is provided with a fifth sealing ring.

[0013] Furthermore, a sixth sealing groove is provided on the top surface of the valve body, and a sixth sealing ring is provided in the sixth sealing groove.

[0014] The container valve provided by this utility model, compared with the prior art, uses a pressure sensing device to monitor the internal pressure value of the container valve in real time, providing operators with accurate pressure data. When the system pressure is abnormal, the pressure sensing device can quickly provide an alert, enabling operators to take timely measures to avoid accidents. It also reduces the frequency and intensity of manual inspections, thereby reducing labor costs. At the same time, the combined use of the pressure gauge and the pressure sensing device can combine the advantages of mechanical display and electronic monitoring to provide more comprehensive and reliable pressure management. The arrangement of the aforementioned start port, air inlet, air outlet, pressure detection port, pressure gauge interface, and safety relief port not only optimizes airflow management but also makes the overall layout of the container valve more reasonable and compact. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3 yes Figure 2 Sectional view at CC;

[0018] Figure 4 yes Figure 2 Sectional view at point BB;

[0019] Figure 5 yes Figure 3 A magnified structural diagram of part A in the middle;

[0020] Figure 6 yes Figure 3 A magnified structural diagram of part B in the middle section;

[0021] Figure 7 yes Figure 3 A magnified structural diagram of section C.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Valve body; 10. Valve chamber; 11. Start port; 12. Air inlet; 13. Air outlet; 14. Pressure detection port; 141. First mounting through hole; 142. Second mounting through hole; 143. Third mounting through hole; 15. Pressure gauge interface; 151. Fourth mounting through hole; 152. Fifth mounting through hole; 16. Safety relief port; 17. Sixth sealing groove; 18. Sixth sealing ring;

[0024] 2. Piston assembly; 21. Piston body; 211. Spring mounting groove; 212. Connecting through hole; 213. Second sealing groove; 214. Third sealing groove; 22. Return spring; 23. Sealing gland; 230. Damping channel; 231. First damping through hole; 232. Second damping through hole; 233. Third damping through hole; 234. Fourth damping through hole; 235. Fourth sealing groove; 24. Second sealing ring; 25. Third sealing ring; 26. Fourth sealing ring;

[0025] 3. Valve cover pressure relief assembly; 31. Valve cover body; 310. Spring mounting seat; 311. First pressure relief channel; 312. First pressure relief through hole; 313. Second pressure relief through hole; 314. Third pressure relief through hole; 315. Fourth pressure relief through hole; 316. Pressure relief washer; 317. Fifth sealing groove; 318. Fifth sealing ring; 32. Actuating diaphragm; 33. Pressure relief cover; 331. Second pressure relief channel;

[0026] 4. Anti-accidental spraying device;

[0027] 5. Pressure sensing device; 51. First needle valve; 52. Needle valve pressure plate; 53. Pressure sensor; 54. Control board; 55. Sensor housing; 56. Connector; 57. First sealing groove; 58. First sealing ring;

[0028] 61. Second needle valve;

[0029] 7. Safety relief device; 71. Safety valve; 72. Safety diaphragm; 73. Compression washer; 74. Relief channel. Detailed Implementation

[0030] The present invention will be described in detail below with reference to specific embodiments.

[0031] In this utility model, unless otherwise explicitly specified and limited, when terms such as "set in," "connected," or "linked" appear, these terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through one or more intermediate media. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The directional terms appearing in this utility model are for the purpose of better describing the characteristics of the features and the relationships between them. It should be understood that when the placement direction of this utility model changes, the direction of the characteristics of the features and the relationships between them also changes accordingly. Therefore, directional terms do not constitute an absolute limitation on the characteristics of the features and the relationships between them in space, but only a relative limitation.

[0032] This utility model provides a container valve for starting, driving, or extinguishing agent cylinders, such as... Figures 1 to 7 As shown, it includes a valve body 1 and a piston assembly 2; the valve body 1 is provided with a valve cavity 10 and an activation port 11, an air inlet 12, an air outlet 13, a pressure detection port 14, a pressure gauge interface 15, and a safety relief port 16 communicating with the valve cavity 10; the activation port 11 is located at the top of the valve body 1 and a valve cover pressure relief assembly 3 is installed on the activation port 11; the air inlet 12 is located at the bottom of the valve body 1 and is used to communicate with the extinguishing agent bottle; the air outlet 13, the pressure detection port 14, the pressure gauge interface 15, and the safety relief port 16 are distributed circumferentially on the side wall of the valve body 1. In the vertical projection direction, the air outlet... The pressure gauge interface 13 is positioned opposite to the pressure gauge interface 15, and the pressure detection port 14 is positioned opposite to the safety relief port 16; the piston assembly 2 can move up and down within the valve chamber 10 to open or close the connection between the air inlet 12 and the air outlet 13; the air outlet 13 is used to connect with the fire extinguishing nozzle and is equipped with an anti-misfire device 4; the anti-misfire device 4 is prior art, and its structure and working principle are not described in this application; the pressure detection port 14 is equipped with a pressure sensing device 5; the pressure gauge interface 15 is equipped with a pressure gauge device (not shown in the figure); the safety relief port 16 is equipped with a safety relief device 7.

[0033] Based on the above structural setup, the pressure sensor 5 monitors the internal pressure of the container valve in real time, providing operators with accurate pressure data. When the system pressure is abnormal, the pressure sensor 5 can quickly provide an alert, enabling operators to take timely measures to prevent accidents. This also reduces the frequency and intensity of manual inspections, thereby lowering labor costs. Simultaneously, the combined use of the pressure gauge and the pressure sensor 5 leverages the advantages of mechanical display and electronic monitoring to provide more comprehensive and reliable pressure management. Furthermore, the arrangement of the start port 11, air inlet 12, air outlet 13, pressure detection port 14, pressure gauge interface 15, and safety relief port 16 optimizes the air passage structure, making the overall layout of the container valve more rational and compact.

[0034] In this embodiment, the pressure sensing device 5 includes a first needle valve 51, a needle valve pressure plate 52, a pressure sensor 53, a control board 54, and a sensor housing 55; the pressure detection port 14 includes a first mounting through hole 141, a second mounting through hole 142, and a third mounting through hole 143 that gradually enlarge and communicate with each other. The first needle valve 51 is threadedly connected to the first mounting through hole 141, the needle valve pressure plate 52 is disposed in the second mounting through hole 142 and is used to press the first needle valve 51 into the first mounting through hole 141, and the third mounting through hole 143 is provided with an internal thread. The pressure sensor 53 is threaded to the internal thread of the third mounting through hole 143 and connected to the first needle valve 51 via a connector 56. The outer wall of the connector 56 has a first sealing groove 57 with a first sealing ring 58 to ensure that gas does not leak from the connection between the connector 56 and the third mounting through hole 143, improving sealing performance. The control board 54 is connected to the pressure sensor 53. The sensor housing 55 encloses the control board 54 and is threaded to the external thread of the third mounting through hole 143. When maintenance or replacement of the pressure sensor 53 is required, the system pressure can be isolated by closing the first needle valve 51, eliminating the need to vent the gas in the valve chamber 10 and avoiding the risk of shutdown or gas leakage.

[0035] In this embodiment, the pressure gauge device includes a second needle valve 61 and a pressure gauge (not shown in the figure). The pressure gauge interface 15 includes a fourth mounting through hole 151 and a fifth mounting through hole 152 that gradually enlarge and communicate with each other. The second needle valve 61 is threaded into the fourth mounting through hole 151, and the pressure gauge is connected to the second needle valve 61 and installed in the fifth mounting through hole 152. When maintenance or replacement of the pressure gauge is required, the system pressure can be isolated by closing the second needle valve 61 without purging the gas in the valve, thus avoiding the risk of shutdown or gas leakage.

[0036] In this embodiment, the safety relief device 7 includes a safety valve 71 and a safety diaphragm 72. The safety diaphragm 72 is disposed at the safety relief port 16. The safety valve 71 is threadedly connected to the safety relief port 16, and the safety diaphragm 72 is pressed into the safety relief port 16 by a compression washer 73. The safety valve 71 is provided with a relief channel 74 communicating with the valve chamber 10. When the gas pressure inside the valve exceeds a set value, the safety diaphragm 72 automatically bursts and releases part of the gas to prevent the valve body 1 from being damaged due to overpressure, thus ensuring the pressure safety of the container valve and the gas storage bottle.

[0037] In this embodiment, the piston assembly 2 includes a piston body 21, a return spring 22, and a sealing cap 23. The valve cover pressure relief assembly 3 is provided with a downwardly protruding spring mounting seat 310, and the piston body 21 is provided with a downwardly recessed spring mounting groove 211. One end of the return spring 22 is mounted on the spring mounting seat 310, and the other end is mounted on the spring mounting groove 211. The piston body 21 is also provided with a connecting through hole 212 communicating with the spring mounting groove 211, and the sealing cap 23 is threadedly connected to the connecting through hole 212. The diameter of the spring mounting groove 211 is larger than the diameter of the connecting through hole 212, and the sealing cap 23 is provided with a damping channel 230 communicating with the connecting through hole 212. The damping channel 230 gradually narrows towards the valve cover pressure relief assembly 3. The provision of the spring mounting seat 310 and the spring mounting groove 211 enables the return spring 22 to be positioned and installed, improving the ease and accuracy of assembly.

[0038] In this embodiment, the damping channel 230 includes a first damping through-hole 231, a second damping through-hole 232, a third damping through-hole 233, and a fourth damping through-hole 234 that gradually decrease in size and are interconnected. The first damping through-hole 231 is a frustum-shaped structure with a smaller top and a larger bottom, the second damping through-hole 232 is a hexagonal prism, the third damping through-hole 233 is a large cylinder, and the fourth damping through-hole 234 is a small cylinder. Through the above structural design, the damping channel 230 can form a multi-stage throttling effect, restricting gas flow in stages, thereby gradually balancing the pressure difference between the upper and lower sides of the piston assembly 2 and reducing the turbulence intensity and vibration amplitude when the gas flows at high speed.

[0039] In this embodiment, the outer wall and bottom surface of the piston body 21 are respectively provided with a second sealing groove 213 and a third sealing groove 214. The second sealing groove 213 is provided with a second sealing ring 24, and the third sealing groove 214 is provided with a third sealing ring 25. The outer wall of the sealing gland 23 is provided with a fourth sealing groove 235, and the fourth sealing groove 235 is provided with a fourth sealing ring 26. The second sealing ring 24, the third sealing ring 25, and the fourth sealing ring 26 form a solid barrier between the piston body 21 and the valve body 1, between the piston body 21 and the sealing gland 23, and between the sealing gland 23 and the valve body 1, respectively, effectively preventing gas leakage, ensuring the pressure stability of the valve chambers 10 on both sides of the piston assembly 2, and improving the sealing performance and reliability of the container valve.

[0040] In this embodiment, the valve cover pressure relief assembly 3 includes a valve cover body 31, an activation diaphragm 32, and a pressure relief cover 33. The valve cover body 31 is threaded to the activation port 11, and the pressure relief cover 33 is threaded to the valve cover body 31. The valve cover body 31 is provided with a first pressure relief channel 311 communicating with the valve chamber 10, and the pressure relief cover 33 is provided with a second pressure relief channel 331 communicating with the first pressure relief channel 311. The activation diaphragm 32 is disposed between the valve cover body 31 and the pressure relief cover 33 and can open or close the communication between the first pressure relief channel 311 and the second pressure relief channel 331. When it is necessary to release the extinguishing gas, the external drive device is activated automatically, manually, or mechanically. The drive device punctures the activation diaphragm 32 to release the gas. The gas on the upper side of the piston assembly 2 enters the second pressure relief channel 331 from the first pressure relief channel 311. At this time, the gas pressure on the upper side of the piston assembly 2 drops, and the gas on the lower side pushes the piston assembly 2 up, opening the communication between the outlet 13 and the inlet 12, and the gas is released.

[0041] In this embodiment, the first pressure relief channel 311 includes a first pressure relief through hole 312, a second pressure relief through hole 313, a third pressure relief through hole 314, and a fourth pressure relief through hole 315. The first pressure relief through hole 312, the second pressure relief through hole 313, the third pressure relief through hole 314, and the fourth pressure relief through hole 315 are all cylindrical. The diameter of the first pressure relief through hole 312 is larger than the diameter of the second pressure relief through hole 313 and smaller than the diameter of the third pressure relief through hole 314. The diameter of the fourth pressure relief through hole 315 is larger than the diameter of the third pressure relief through hole 314. The fourth pressure relief through hole 315 is provided with a pressure relief washer 316. The top surface of the pressure relief washer 316 is provided with a fifth sealing groove 317. The fifth sealing groove 317 is provided with a fifth sealing ring 318, which ensures the sealing between the valve cover body 31 and the pressure relief cover 33 and improves the stability of the container valve.

[0042] In this embodiment, a sixth sealing groove 17 is provided on the top surface of the valve body 1, and a sixth sealing ring 18 is provided in the sixth sealing groove 17 to ensure the sealing between the valve body 1 and the valve cover body 31.

[0043] In summary, this type of container valve can solve the problem of existing container valves being unable to monitor pressure changes in real time.

[0044] Where there is no conflict, the above embodiments and features can be combined with each other.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A container valve for activating, driving, or extinguishing agent cylinders, characterized in that: The valve body (1) includes a valve body (1) and a piston assembly (2). The valve body (1) is provided with a valve chamber (10) and an inlet (11), an air inlet (12), an air outlet (13), a pressure detection port (14), a pressure gauge interface (15), and a safety relief port (16) communicating with the valve chamber (10). The inlet (11) is located at the top of the valve body (1) and is equipped with a valve cover pressure relief assembly (3). The air inlet (12) is located at the bottom of the valve body (1) and is used to communicate with the extinguishing agent bottle. The air outlet (13), pressure detection port (14), pressure gauge interface (15), and safety relief port (16) are arranged circumferentially. On the side wall of the valve body (1), in the vertical projection direction, the air outlet (13) is opposite to the pressure gauge interface (15), and the pressure detection port (14) is opposite to the safety relief port (16); the piston assembly (2) can move up and down in the valve cavity (10) to open or close the connection between the air inlet (12) and the air outlet (13); the air outlet (13) is used to connect with the fire extinguishing nozzle and is equipped with an anti-misfire device (4); the pressure detection port (14) is equipped with a pressure sensing device (5); the pressure gauge interface (15) is equipped with a pressure gauge device; and the safety relief port (16) is equipped with a safety relief device (7).

2. The container valve according to claim 1, characterized in that: The pressure sensing device (5) includes a first needle valve (51), a needle valve pressure plate (52), a pressure sensor (53), a control board (54), and a sensor housing (55); the pressure detection port (14) includes a first mounting through hole (141), a second mounting through hole (142), and a third mounting through hole (143), which gradually enlarge and communicate with each other. The first needle valve (51) is threaded to the first mounting through hole (141), and the needle valve pressure plate (52) is disposed in the second mounting through hole (142) and is used to press the first needle valve (51) into the first mounting through hole (143). 1) The third mounting through hole (143) is provided with internal thread and external thread. The pressure sensor (53) is threaded to the internal thread of the third mounting through hole (143) and connected to the first needle valve (51) through the connector (56). The outer side wall of the connector (56) is provided with a first sealing groove (57) and a first sealing ring (58) is provided in the first sealing groove (57). The control board (54) is connected to the pressure sensor (53). The sensor housing (55) covers the control board (54) and is threaded to the external thread of the third mounting through hole (143).

3. The container valve according to claim 1, characterized in that: The pressure gauge device includes a second needle valve (61) and a pressure gauge. The pressure gauge interface (15) includes a fourth mounting through hole (151) and a fifth mounting through hole (152) that gradually enlarge and communicate with each other. The second needle valve (61) is threaded into the fourth mounting through hole (151), and the pressure gauge is connected to the second needle valve (61) and mounted in the fifth mounting through hole (152).

4. The container valve according to claim 1, characterized in that: The safety relief device (7) includes a safety valve (71) and a safety diaphragm (72). The safety diaphragm (72) is located at the safety relief port (16). The safety valve (71) is threaded to the safety relief port (16) and the safety diaphragm (72) is pressed into the safety relief port (16) by a compression washer (73). The safety valve (71) is provided with a relief channel (74) communicating with the valve chamber (10).

5. The container valve according to claim 1, characterized in that: The piston assembly (2) includes a piston body (21), a return spring (22), and a sealing gland (23); the valve cover pressure relief assembly (3) is provided with a downwardly protruding spring mounting seat (310), the piston body (21) is provided with a downwardly recessed spring mounting groove (211), one end of the return spring (22) is installed in the spring mounting seat (310), and the other end is installed in the spring mounting groove (211); the piston body (21) is also provided with a connecting through hole (212) communicating with the spring mounting groove (211), and the sealing gland (23) is threaded to the connecting through hole (212); the diameter of the spring mounting groove (211) is larger than the diameter of the connecting through hole (212), and the sealing gland (23) is provided with a damping channel (230) communicating with the connecting through hole (212), and the damping channel (230) is gradually narrowing towards the valve cover pressure relief assembly (3).

6. The container valve according to claim 5, characterized in that: The damping channel (230) includes a first damping through hole (231), a second damping through hole (232), a third damping through hole (233), and a fourth damping through hole (234) that gradually decrease in size and are connected. The first damping through hole (231) is a frustum-shaped structure with a smaller top and a larger bottom, the second damping through hole (232) is a hexagonal prism, the third damping through hole (233) is a large cylinder, and the fourth damping through hole (234) is a small cylinder.

7. The container valve according to claim 5, characterized in that: The outer side wall and bottom surface of the piston body (21) are respectively provided with a second sealing groove (213) and a third sealing groove (214). The second sealing groove (213) is provided with a second sealing ring (24), and the third sealing groove (214) is provided with a third sealing ring (25). The outer side wall of the sealing gland (23) is provided with a fourth sealing groove (235), and the fourth sealing groove (235) is provided with a fourth sealing ring (26).

8. The container valve according to claim 1, characterized in that: The valve cover pressure relief assembly (3) includes a valve cover body (31), an activation diaphragm (32), and a pressure relief cover (33). The valve cover body (31) is threaded to the activation port (11), and the pressure relief cover (33) is threaded to the valve cover body (31). The valve cover body (31) is provided with a first pressure relief channel (311) communicating with the valve chamber (10), and the pressure relief cover (33) is provided with a second pressure relief channel (331) communicating with the first pressure relief channel (311). The activation diaphragm (32) is located between the valve cover body (31) and the pressure relief cover (33) and can open or close the communication between the first pressure relief channel (311) and the second pressure relief channel (331).

9. The container valve according to claim 8, characterized in that: The first pressure relief channel (311) includes a first pressure relief through hole (312), a second pressure relief through hole (313), a third pressure relief through hole (314), and a fourth pressure relief through hole (315). The first pressure relief through hole (312), the second pressure relief through hole (313), the third pressure relief through hole (314), and the fourth pressure relief through hole (315) are all cylindrical. The diameter of the first pressure relief through hole (312) is larger than the diameter of the second pressure relief through hole (313) and smaller than the diameter of the third pressure relief through hole (314). The diameter of the fourth pressure relief through hole (315) is larger than the diameter of the third pressure relief through hole (314). The fourth pressure relief through hole (315) is provided with a pressure relief washer (316). The top surface of the pressure relief washer (316) is provided with a fifth sealing groove (317). The fifth sealing groove (317) is provided with a fifth sealing ring (318).

10. The container valve according to claim 1, characterized in that: The valve body (1) has a sixth sealing groove (17) on its top surface, and a sixth sealing ring (18) is provided in the sixth sealing groove (17).

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