Container valve of fire extinguisher and non-pressure-storage type fire extinguisher thereof

Abstract

The utility model relates to fire extinguishing equipment, and discloses a container valve of a fire extinguisher and a non-pressure-storage type fire extinguisher thereof, the container valve comprises a container valve body and a valve cover, a membrane is arranged between the valve cover and the container valve body, an upper cavity, a lower cavity and a sealing channel are arranged in the container valve body, and the upper cavity is communicated with the lower cavity through the sealing channel; a diaphragm base is installed at the port of the upper cavity, one end of the diaphragm base abuts against the diaphragm and is in sealed connection with the diaphragm, and the other end of the diaphragm base extends into the upper cavity and is in sealed connection with the inner wall of the upper cavity. A bayonet used for puncturing the diaphragm is installed in the upper cavity, a bayonet base is installed at the bottom of the bayonet, and a first spring arranged on the bayonet in a sleeving mode is arranged between the bayonet base and the diaphragm base. When the container valve is not started, the bayonet base and the sealing channel are sealed. According to the container valve, the bayonet is installed in the container valve, high-pressure gas generated by the gas generating device firstly pushes the bayonet, then the bayonet punctures the membrane, and therefore the container valve is started. And the membrane is punctured by the bayonet, so that the starting stability is improved.

Description

Technical Field

[0001] This utility model relates to fire extinguishing equipment, and more particularly to the container valve of a fire extinguisher and its non-pressurized fire extinguisher. Background Technology

[0002] Traditional clean gas fire extinguishing devices are mostly pressurized structures that store nitrogen to drive the release of extinguishing agents. However, in practical applications, pressurized structures have several drawbacks: 1) They require high pressure in the storage tank, which is pressurized for a long time and needs to be inspected every 3 years, resulting in high costs; 2) Pressurized structures are at risk of slow pressure leakage from the valves of the container, which may lead to failure over time; 3) High-pressure storage tanks pose risks during transportation, especially overseas, requiring a hazard certificate and resulting in high transportation costs; 4) Pressurized devices experience significant pressure fluctuations with temperature changes, requiring regular manual inspections for leaks, resulting in high maintenance costs.

[0003] Currently, some non-pressurized fire extinguishing devices on the market operate on the principle of instantly generating a large amount of gas through a gas-generating structure, which then bursts the diaphragm to release the gas, such as the one with publication number 103301590A. However, in actual use, the diaphragm material itself requires high pressure for gas generation, posing a risk of activation failure. Furthermore, fire extinguishing devices rely on temperature monitoring to determine if gunpowder has been triggered and if the fire extinguishing system has been activated. This monitoring method has several flaws: 1) During routine maintenance, the device is in a room temperature environment, making it impossible to monitor for chronic leaks of the extinguishing agent; 2) An alarm triggered by the gas-generating device does not necessarily indicate that the fire extinguishing system has activated and is releasing the extinguishing agent. To address these issues, this valve has been redesigned as a non-pressurized fire extinguishing device. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a container valve for a fire extinguisher and a non-pressurized fire extinguisher thereof.

[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0006] The container valve of the fire extinguisher includes a container valve body and a valve cover installed on the container valve body. A diaphragm is installed between the valve cover and the container valve body. The container valve body is provided with an upper cavity, a lower cavity and a sealing channel. The upper cavity is connected to the lower cavity through the sealing channel.

[0007] A diaphragm base is installed at the port of the upper cavity. One end of the diaphragm base abuts against the diaphragm and is sealed to it, while the other end extends into the upper cavity and is sealed to the inner wall of the upper cavity.

[0008] The upper cavity is equipped with a bayonet for piercing the diaphragm. A bayonet base is installed at the bottom of the bayonet, and a first spring is fitted on the bayonet between the bayonet base and the diaphragm base. When the container valve is not activated, the bayonet base is sealed to the sealing channel.

[0009] Traditional fire extinguishing agent container valves generally have two activation methods. One method uses an electromagnet or micro motor as the activation source. After activation, a differential pressure is formed inside the container valve, and the valve core inside the container valve is activated to release the fire extinguishing agent. The other method uses a pilot valve. A dagger on the pilot valve punctures the diaphragm on the container valve. After activation, a differential pressure is formed inside the container valve, and the valve core inside the container valve is activated to release the fire extinguishing agent.

[0010] As described in the background section, the activation method for non-pressurized fire extinguishers is basically to activate the container valve by rupturing the diaphragm under high pressure.

[0011] This container valve has a bayonet installed inside. The high-pressure gas generated by the gas-generating device first pushes the bayonet, which then punctures the diaphragm, thereby actuating the container valve. The bayonet puncturing the diaphragm improves the stability of the start-up process.

[0012] Preferably, the diaphragm base has a through-type stepped hole, and the side wall at the lower end of the diaphragm base has at least one connecting hole that communicates with the stepped hole; the bayonet has a bayonet passage for fire extinguishing, and the stepped hole communicates with the bayonet passage.

[0013] After the bayonet punctures the diaphragm, the extinguishing agent enters the stepped hole through the connecting hole. The extinguishing agent can be released directly from the punctured diaphragm or output from the bayonet channel, ensuring the output of the extinguishing agent.

[0014] Preferably, the upper end of the diaphragm base extends outward to form a support portion, the outer diameter of the support portion is larger than the inner diameter of the upper cavity, the support portion is placed on the end face at the port of the upper cavity, the upper end face of the support portion is provided with an annular first sealing groove, a diaphragm sealing ring is installed in the first sealing groove, and the diaphragm is placed on the diaphragm sealing ring.

[0015] The diaphragm base is sealed to the diaphragm via a diaphragm sealing ring. When not in operation, the seal between the diaphragm base and the diaphragm is good and leakage is not easy.

[0016] Preferably, a diaphragm gasket is installed inside the valve cover, with the diaphragm positioned between the diaphragm gasket and the diaphragm base. The diaphragm gasket has a release hole for the dagger to pass through after piercing the diaphragm.

[0017] The inner end face of the valve cover is difficult to machine, making it impossible to guarantee the surface roughness value. The diaphragm gasket is an independent component, making it easy to machine its surface roughness, thereby ensuring that the diaphragm can be placed flat on the diaphragm gasket and guaranteeing the sealing performance between the diaphragm sealing ring and the diaphragm.

[0018] Preferably, a second sealing groove is provided on the outer wall of the lower end of the bayonet base, and a channel sealing ring is installed in the second sealing groove. The channel sealing ring has an annular groove with the opening facing upward. There is a gap between the upper end of the channel sealing ring and the top wall of the second sealing groove, and the upper cavity communicates with the groove through the gap.

[0019] The channel sealing ring not only securely fastens to the bayonet base but also improves the seal between the channel sealing ring and the sealing channel. When there is air pressure inside the groove, the air pressure acts on the two side walls of the groove, with one side wall pressing against the bayonet base and the other side wall pressing against the sealing channel wall.

[0020] Preferably, a signal feedback device is installed on the side wall of the container valve body. The signal feedback device includes a signal feedback component and a signal connector installed on the container valve body. A pushrod gasket and a pushrod valve body are installed inside the signal connector. A valve pushrod is installed inside the pushrod valve body. The signal feedback component is installed on the signal connector and, along with the pushrod gasket, presses against the valve pushrod.

[0021] The signal feedback device of this container valve can monitor whether there is a leak of extinguishing agent in real time, and can also monitor whether the gas generating device is started.

[0022] Preferably, the signal feedback component includes a signal switch base, within which a contact switch, a piston rod, and a second spring are installed. One end of the second spring rests against the piston rod, and the other end rests against the signal switch base. The piston rod can move left and right within the channel of the signal switch base. Under gas pressure, the piston rod will touch the contact switch, thereby activating the signal feedback device to monitor whether the extinguishing agent in the extinguishing agent cylinder is leaking, whether the gas generating device is activated, etc.

[0023] Preferably, one end of the valve pushrod has a top cover that can be sealed onto the pushrod valve body, and the other end has a protrusion. A pagoda-shaped third spring is installed between the protrusion and the pushrod valve body. The top cover acts as a limiter, axially limiting it at the inner end of the pushrod valve body. The protrusion of the valve pushrod is limited at the other end of the pushrod valve body by the third spring. When the pushrod gasket does not push open the valve pushrod, the valve pushrod moves to the left under the action of the third spring, thereby sealing the top cover at the end of the pushrod valve body.

[0024] Preferably, the pushrod gasket has a through-hole. When the valve pushrod is pushed open by the pushrod gasket, the upper cavity is connected to the signal switch base through the gasket. Air pressure enters from the gap between the valve pushrod and the pushrod valve body, then enters the signal switch base through the gasket, and finally acts on the end face of the contact switch.

[0025] Preferably, a filling port is provided on the other side of the container valve body, a filling connector is installed on the filling port, a first channel extending to the bottom of the container valve body is provided on the side wall of the filling port, and a second channel communicating with the upper cavity is provided at the bottom of the filling port, the diameter of the second channel being smaller than the diameter of the first channel.

[0026] The filling connector is used to fill the fire extinguishing agent. When the fire extinguishing agent is filled into the fire extinguishing agent cylinder, the air pressure in the cylinder enters the upper chamber through the first and second channels, thereby balancing the pressure in the upper and lower chambers. The bayonet base will be sealed in the sealing channel under the action of the first spring.

[0027] Preferably, the filling connector includes a filling valve body and a valve core. The valve core is installed on the filling valve body and includes a core body and a core rod. The inner end of the core rod is sealed to the air passage of the core body by a sealing gasket, and the outer end of the core rod is connected to the core body by a fifth spring, which is a pagoda-shaped spring.

[0028] A non-pressurized fire extinguisher includes an extinguishing agent cylinder, one end of which is equipped with a gas generating device, and the other end of which is equipped with a container valve. A siphon tube that extends into the extinguishing agent cylinder is installed on the container valve.

[0029] Preferably, the gas generating device includes a gas generating base, which is sealed and installed on the extinguishing agent cylinder. A gas generating plug and a gas generating pipe are respectively installed at both ends of the gas generating base. The gas generating pipe is located inside the extinguishing agent cylinder and contains gunpowder. A gas generating valve core and a nozzle are installed at the other end of the gas generating pipe. The nozzle is fixed to the end of the gas generating pipe. The gas generating valve core blocks the channel of the gas generating pipe. A fourth spring is installed between the gas generating valve core and the nozzle. The nozzle has an upward-facing spray hole.

[0030] The gas generating device produces high-pressure gas. This high-pressure gas drives a piercing blade, which punctures the diaphragm and activates the container valve. The extinguishing agent is then delivered to the fire-fighting pipeline through the siphon pipe and the container valve. The device is equipped with nozzles, which serve two purposes: limiting the axial movement of the gas generating core and guiding the direction of the high-pressure gas injection.

[0031] Preferably, the extinguishing agent cylinder is a horizontal cylinder, and the siphon tube includes a pipe body, a hose and a counterweight connector. One end of the pipe body is fixed to the container valve body, the other end of the pipe body is fixedly connected to the hose, and the other end of the hose is fixedly connected to the counterweight connector. The counterweight connector is located at the bottom of the extinguishing agent cylinder.

[0032] Traditional siphon tubes are typically made of a straight metal tube. Because this extinguishing agent cylinder is horizontal, to ensure the lower end of the siphon tube remains at the bottom of the cylinder, the conventional design involves bending the siphon tube and extending it into the cylinder. This siphon tube has a flexible hose attached to its end, with a counterweight connector at the other end. This counterweight connector sinks to the bottom of the cylinder under gravity. This horizontal fire extinguisher is easy to install and operate; accidental rotation of the cylinder will not affect the position of the siphon tube's suction inlet.

[0033] This utility model, by adopting the above technical solution, has significant technical effects:

[0034] (1) This container valve is equipped with a bayonet. The high-pressure gas generated by the gas generating device first pushes the bayonet, and then the bayonet punctures the diaphragm, thereby starting the container valve. The bayonet puncturing the diaphragm improves the stability of the start-up.

[0035] (2) The gas generating device is equipped with a nozzle. The nozzle is used to limit the axial movement of the gas generating core and to guide the direction of high-pressure gas injection, so that the extinguishing agent can be quickly pressed into the siphon tube.

[0036] (3) A flexible hose is installed at the end of the siphon tube, and a counterweight connector is installed at the end of the flexible hose. The counterweight connector sinks to the bottom of the extinguishing agent bottle under the action of gravity. This type of horizontal fire extinguisher is easy to operate during installation, and the position of the suction port at the lower end of the siphon tube will not be affected if the operator accidentally rotates the extinguishing agent bottle. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the container valve of this utility model.

[0038] Figure 2 yes Figure 1 A schematic diagram of the structure of the valve body of the container.

[0039] Figure 3 This is a structural diagram of the bayonet and bayonet base.

[0040] Figure 4 This is a schematic diagram of the diaphragm base.

[0041] Figure 5 yes Figure 1 A schematic diagram of the structure of A in the middle.

[0042] Figure 6 This is a schematic diagram of the signal feedback device.

[0043] Figure 7 This is a structural diagram of a non-pressurized fire extinguisher.

[0044] Figure 8This is a schematic diagram of the gas generating device.

[0045] The names of the body parts referred to by the numbers in the above attached diagrams are as follows:

[0046] 10—Container valve body, 101—Upper cavity, 102—Lower cavity, 103—Sealing channel, 104—Filling interface, 105—First channel, 106—Second channel

[0047] 11—Valve Cover

[0048] 12—Membrane

[0049] 13—Diaphragm base, 131—Stepped hole, 132—Connecting hole, 133—Support part, 134—First sealing groove

[0050] 14—Bayonet, 141—Bayonet passage

[0051] 15—Bayonet base, 151—Second sealing groove

[0052] 16—First Spring

[0053] 17—Diaphragm seal

[0054] 18—Diaphragm gasket, 181—Release port

[0055] 19—Channel sealing ring, 191—Groove

[0056] 20—Gap

[0057] 21—Signal feedback device; 211—Signal feedback assembly; 212—Signal connector; 213—Push rod gasket; 214—Push rod valve body; 215—Valve push rod; 216—Seal; 2111—Signal switch base; 2112—Contact switch; 2113—Piston rod; 2114—Second spring; 2131—Air hole; 2151—Top cover; 2152—Protrusion

[0058] 22—Third Spring

[0059] 23—Filling connector, 231—Filling valve body, 232—Valve core, 2321—Core body, 2322—Core rod, 2323—Sealing gasket, 2324—Fifth spring

[0060] 24—Extinguishing agent cylinder

[0061] 25—Gas generating device, 251—Gas generating base, 252—Gas generating plug, 253—Gas generating fittings, 254—Gunpowder, 255—Gas generating valve core, 256—Nozzle, 257—Fourth spring, 2561—Nozzle hole

[0062] 26—Siphon tube, 261—Pipe body, 262—Hose, 263—Counterweight connector. Detailed Implementation

[0063] The following is in conjunction with the appendix Figure 1-8 The present invention will be further described in detail with reference to the embodiments.

[0064] Example 1:

[0065] The container valve of the fire extinguisher includes a container valve body 10 and a valve cover 11 installed on the container valve body 10. The valve cover 11 is threadedly connected to the container valve body 10. A diaphragm 12 is installed between the valve cover 11 and the container valve body 10. The container valve body 10 is provided with an upper cavity 101, a lower cavity 102 and a sealing channel 103. The upper cavity 101 is connected to the lower cavity 102 through the sealing channel 103.

[0066] A diaphragm base 13 is installed at the port of the upper cavity 101. The diaphragm 12 is placed on the diaphragm base 13. One end of the diaphragm base 13 abuts against the diaphragm 12 and is sealed to it, while the other end extends into the upper cavity 101 and is sealed to the inner wall of the upper cavity 101.

[0067] A bayonet 14 for piercing the diaphragm 12 is installed inside the upper cavity 101. A bayonet base 15 is installed at the bottom of the bayonet 14. The bayonet 14 is installed on the bayonet base 15 by interference fit. The bayonet base 15 is an irregular frustum, which, under the guidance of the arc, meets the requirements of the extinguishing agent flow output. A first spring 16 is provided between the bayonet base 15 and the diaphragm base 13, which is fitted on the bayonet 14. When the container valve is not activated, the bayonet base 15 is sealed with the sealing channel 103. When the container valve is activated, the air pressure pushes the bayonet base 15, the bayonet 14 pierces the diaphragm 12, the bayonet base 15 separates from the sealing channel 103, and the lower cavity 102 is opened to the upper cavity 101, releasing the extinguishing agent.

[0068] The diaphragm base 13 has a through-type stepped hole 131. At least one connecting hole 132 is provided on the side wall of the lower end of the diaphragm base 13, communicating with the stepped hole 131. In this embodiment, there are eight connecting holes 132, evenly distributed around the lower end of the diaphragm base 13, thus preserving the extinguishing agent passage. The bayonet 14 has a bayonet passage 141 for extinguishing agent passage. The bayonet 14 is a hollow structure, with the stepped hole 131 communicating with the bayonet passage 141. A notch is opened on the side of the bayonet 14, communicating with the bayonet passage 141. While ensuring piercing the diaphragm 14, the extinguishing agent enters the bayonet passage 141 through the side notch and is then released into the external pipeline.

[0069] The upper end of the diaphragm base 13 extends outward to form a support part 133. The outer diameter of the support part 133 is larger than the inner diameter of the upper cavity 101. The support part 133 is placed on the end face at the port of the upper cavity 101. The upper end face of the support part 133 is provided with an annular first sealing groove 134. A diaphragm sealing ring 17 is installed in the first sealing groove 134. The diaphragm sealing ring 17 is an O-ring made of nitrile rubber. The diaphragm 12 is placed on the diaphragm sealing ring 17.

[0070] A diaphragm gasket 18 is installed inside the valve cover 11. The diaphragm 12 is located between the diaphragm gasket 18 and the diaphragm base 13. The diaphragm gasket 18 is provided with a release hole 181 for the dagger to pierce the diaphragm 12. When the valve cover 11 is tightened, the valve cover will press the diaphragm 12 onto the diaphragm sealing ring 17 along with the diaphragm gasket 18, ensuring the sealing of the container valve outlet.

[0071] A second sealing groove 151 is provided on the outer wall of the lower end of the bayonet base 15. A channel sealing ring 19 is installed in the second sealing groove 151. The channel sealing ring 19 has an annular groove 191 with its opening facing upward. A gap 20 is provided between the upper end of the channel sealing ring 19 and the top wall of the second sealing groove 151. The upper cavity 101 communicates with the groove 191 through the gap 20. The channel sealing ring 19 not only securely fastens to the bayonet base 15, but also improves the sealing performance between the channel sealing ring 19 and the sealing channel 103. When there is air pressure in the groove 191, the air pressure will act on the two side walls of the groove 191. One side wall will press against the bayonet base 15, and the other side wall will press against the inner wall of the sealing channel 103.

[0072] A signal feedback device 21 is installed on the side wall of the container valve body 10. The signal feedback device 21 includes a signal feedback component 211 and a signal connector 212 installed on the container valve body 10. A pushrod gasket 213 and a pushrod valve body 214 are installed inside the signal connector 212. A seal 216 is provided between the pushrod valve body 214 and the signal connector 212, and radial sealing is achieved through the seal 216. A valve pushrod 215 is installed inside the pushrod valve body 214. The signal feedback component 211 is installed on the signal connector 212 and, along with the pushrod gasket 213, presses against the valve pushrod 215, thereby opening the channel between the valve pushrod 215 and the pushrod valve body 214.

[0073] The signal feedback component 211 includes a signal switch base 2111, within which a contact switch 2112, a piston rod 2113, and a second spring 2114 are installed. The signal switch base 2111 is sealed to the signal connector 212 via a sealing ring, and is also threadedly connected to the signal connector 212. One end of the second spring 2114 rests against the piston rod 2113, and the other end rests against the signal switch base 2111. The piston rod 2113 can move left and right within the channel of the signal switch base 2111. Under air pressure, the piston rod 2113 moves to the left, thereby triggering the contact switch 2112, and the action of the contact switch is detected externally. After the extinguishing agent in the extinguishing agent cylinder 24 is released due to the fire start, the air pressure in the extinguishing agent cylinder 24 is lost. The piston rod 2113 moves to the right under the action of the second spring 2114. The end of the piston rod 2113 separates from the contact switch 2112, and the signal feedback state disappears. This allows for monitoring whether the extinguishing agent cylinder 24 is leaking or whether the fire extinguisher is spraying.

[0074] One end of the valve pushrod 215 is provided with a top cover 2151 that can be sealed on the pushrod valve body 214, and the other end is provided with a protrusion 2152. A pagoda-shaped third spring 22 is installed between the protrusion 2152 and the pushrod valve body 214 to prevent the valve pushrod 215 from disengaging from the pushrod valve body 214 under the action of the pushrod gasket 213. At the same time, when there is no pushrod gasket 213, it can ensure that the valve pushrod 215 and the seal 216 achieve end face sealing.

[0075] The push rod gasket 213 has a through-hole 2131. When the valve push rod 215 is pushed open by the push rod gasket 213, the upper cavity 101 is connected to the channel of the signal switch base 2111 through the vent 2131.

[0076] A filling port 104 is provided on the other side of the container valve body 10. A filling connector 23 is installed on the filling port 104. The extinguishing agent is poured into the container valve through the filling connector 23 and then flows into the extinguishing agent cylinder 24. The side wall of the filling port 104 has a first channel 105 that extends to the bottom of the container valve body 10. When the container valve is installed on the extinguishing agent cylinder 24, the first channel 105 will communicate with the inner cavity of the extinguishing agent cylinder 24. The bottom of the filling port 104 has a second channel 106 that communicates with the upper cavity 101. The diameter of the second channel 106 is smaller than the diameter of the first channel 105. After the extinguishing agent is filled, the upper cavity 101 is balanced with the lower cavity 102 through the second channel 106 and the first channel 105. The bayonet base 15 is sealed in the sealing cavity 103 under the action of the first spring 16.

[0077] The filling connector 23 includes a filling valve body 231 and a valve core 232. The valve core 232 is mounted on the filling valve body 231 and includes a core body 2321 and a core rod 2322. The inner end of the core rod 2322 is sealed to the air passage of the core body 2321 by a sealing gasket 2323. The outer end of the core rod 2322 is connected to the core body 2321 by a fifth spring 2324, which is a pagoda-shaped spring. When the core rod 2322 is opened, the inflation channel is opened. When the core rod 2322 is not opened, the inner end of the core rod 2322 is sealed to the air passage of the core body 2321 by the sealing gasket 2323.

[0078] Example 2:

[0079] The non-pressurized fire extinguisher includes an extinguishing agent cylinder 24. A gas generating device 25 is installed at one end of the extinguishing agent cylinder 24, and a container valve (as described in Example 1) is installed at the other end of the extinguishing agent cylinder 24. A siphon tube 26 extending into the extinguishing agent cylinder 24 is installed on the container valve. In normal operation, the extinguishing agent cylinder 24 is not filled with external pressure; only the extinguishing agent itself has a slight evaporation pressure. Upon activation, the gas generating device 25 is energized to generate a large amount of gas, thus activating the fire extinguishing mechanism.

[0080] The gas generating device 25 includes a gas generating base 251, which is sealed to the extinguishing agent cylinder 24 by a sealing ring and is threadedly connected to the extinguishing agent cylinder 24. A gas generating plug 252 and a gas generating pipe 253 are respectively installed at both ends of the gas generating base 251. The gas generating pipe 253 is located inside the extinguishing agent cylinder 24 and contains gunpowder 254. The gas generating plug 252 is used to ignite the gunpowder 254 in the gas generating pipe 253. A gas generating valve core 255 and a nozzle 256 are installed at the other end of the gas generating pipe 253. The nozzle 256 is threadedly fastened to the end of the gas generating pipe 253, and the gas generating valve core 255 blocks the passage of the gas generating pipe 253. A fourth spring 257 is installed between the gas generating valve core 255 and the nozzle 256. The nozzle 256 has an upward-facing nozzle hole 2561. When the gas generating plug 252 is connected to an external power source, the gunpowder 254 undergoes a chemical reaction, instantly generating high-pressure gas, which pushes open the gas generating valve core 255. A large amount of gas then passes through the channel between the gas generating valve core 255 and the inner wall of the gas generating pipe 253, and then enters the upper layer of the extinguishing agent cylinder 24 through the nozzle 2561 on the nozzle 256, thereby gradually pushing the extinguishing agent out through the siphon tube 26.

[0081] Example 3:

[0082] Example 3 is basically the same as Example 1, except that the extinguishing agent cylinder 24 is a horizontal cylinder, and the siphon tube 26 includes a tube body 261, a hose 262, and a counterweight connector 263. One end of the tube body 261 is fixed to the container valve body 10, and the other end of the tube body 261 is fixedly connected to the hose 262. The other end of the hose 262 is fixedly connected to the counterweight connector 263, which is located at the bottom of the extinguishing agent cylinder 24. Traditional siphon tubes are basically made of a straight metal tube. Since the extinguishing agent cylinder 24 is a horizontal cylinder, in order to ensure that the lower end of the siphon tube 26 is always at the bottom of the extinguishing agent cylinder 24, the conventional design is to bend the siphon tube and extend it into the extinguishing agent cylinder. In this siphon tube 26, a hose 262 is added to the end of the tube body, and a counterweight connector 263 is added to the end of the hose 262. The counterweight connector 263 sinks to the bottom of the extinguishing agent cylinder 24 under the action of gravity. This type of horizontal fire extinguisher is easy to install and operate. Even if the operator accidentally rotates the extinguishing agent cylinder 24, it will not affect the position of the suction port at the lower end of the siphon tube 26.

Claims

1. A container valve of a fire extinguisher, comprising a container valve body (10) and a valve cover (11) mounted on the container valve body (10), and a diaphragm (12) mounted between the valve cover (11) and the container valve body (10), characterized in that: the container valve body (10) is provided with an upper cavity (101), a lower cavity (102) and a sealing channel (103), the upper cavity (101) being communicated with the lower cavity (102) through the sealing channel (103); a diaphragm base (13) is mounted at a port of the upper cavity (101), one end of the diaphragm base (13) abutting against the diaphragm (12) and being sealingly connected therewith, and the other end of the diaphragm base (13) extending into the upper cavity (101) and being sealingly connected with an inner wall of the upper cavity (101); a bayonet (14) for piercing the diaphragm (12) is mounted in the upper cavity (101), a bottom of the bayonet (14) is provided with a bayonet base (15), and a first spring (16) is arranged on the bayonet (14) between the bayonet base (15) and the diaphragm base (13); when the container valve is not activated, the bayonet base (15) is sealed with the sealing channel (103). The diaphragm base (13) is provided with a through stepped hole (131), a side wall of a lower end of the diaphragm base (13) is provided with at least one communication hole (132) in communication with the stepped hole (131); the bayonet (14) is provided with a bayonet channel (141) for the extinguishing agent to pass through, and the stepped hole (131) is in communication with the bayonet channel (141). An upper end of the diaphragm base (13) extends outward to form a support portion (133), an outer diameter of the support portion (133) is greater than an inner diameter of the upper cavity (101), the support portion (133) is placed on an end face at the port of the upper cavity (101), an upper end face of the support portion (133) is provided with an annular first sealing groove (134), and a diaphragm sealing ring (17) is mounted in the first sealing groove (134), the diaphragm (12) being placed on the diaphragm sealing ring (17). The valve cover (11) is provided with a diaphragm gasket (18), the diaphragm (12) is arranged between the diaphragm gasket (18) and the diaphragm base (13), and the diaphragm gasket (18) is provided with a release hole (181) for the extinguishing agent to pass through after the diaphragm (12) is pierced by the bayonet.

2. A container valve for a fire extinguisher according to claim 1, characterised in that: A second sealing groove (151) is arranged on an outer wall of a lower end of the bayonet base (15), a channel sealing ring (19) is mounted in the second sealing groove (151), the channel sealing ring (19) is provided with a ring of upwardly-opening annular grooves (191), a gap (20) is arranged between an upper end of the channel sealing ring (19) and a top wall of the second sealing groove (151), and the upper cavity (101) is in communication with the grooves (191) through the gap (20).

3. The container valve for fire extinguishers according to claim 1, characterized in that: ​ 4. The container valve for fire extinguishers according to claim 1, characterized in that: ​ 5. The container valve for fire extinguishers according to claim 1, characterized in that: ​ 6. The container valve for fire extinguishers of claim 1, wherein: The side wall of the container valve body (10) is provided with a signal feedback device (21), which comprises a signal feedback assembly (211) and a signal connector (212) mounted on the container valve body (10), the signal connector (212) is provided with a tappet washer (213) and a tappet valve body (214), the tappet valve body (214) is provided with a valve tappet (215), the signal feedback assembly (211) is mounted on the signal connector (212) and presses the valve tappet (215) with the tappet washer (213).

7. The container valve for fire extinguishers of claim 1, wherein: The other side of the container valve body (10) is provided with a filling interface (104), the filling interface (104) is provided with a filling connector (23), the side wall of the filling interface (104) is provided with a first channel (105) penetrating to the bottom of the container valve body (10), the bottom of the filling interface (104) is provided with a second channel (106) communicating with the upper cavity (101), the diameter of the second channel (106) is smaller than that of the first channel (105).

8. Non-pressurized fire extinguisher comprising a fire extinguishing agent bottle (24) having a gas generating device (25) mounted at one end, characterized in that: The other end of the extinguishing agent bottle body (24) is provided with the container valve of the extinguisher according to any one of claims 1-7, and the container valve is provided with a siphon tube (26) extending into the extinguishing agent bottle body (24).

9. A non-pressurised fire extinguisher according to claim 8, wherein: The gas production device (25) comprises a gas production base (251), which is sealingly mounted on the extinguishing agent bottle body (24), and is provided with a gas production plug (252) and a gas production pipe fitting (253) at two ends respectively, the gas production pipe fitting (253) is arranged in the extinguishing agent bottle body (24), the gas production pipe fitting (253) is provided with a gunpowder (254), the other end of the gas production pipe fitting (253) is provided with a gas production valve core (255) and a spray head (256), the spray head (256) is fixed on the end of the gas production pipe fitting (253), the gas production valve core (255) blocks the channel of the gas production pipe fitting (253), a fourth spring (257) is arranged between the gas production valve core (255) and the spray head (256), and the spray head (256) is provided with a spray hole (2561) with an upward opening.

10. The non-pressurized fire extinguisher of claim 8, wherein: The extinguishing agent bottle body (24) is a horizontal bottle body, the siphon tube (26) comprises a tube body (261), a hose (262) and a counterweight connector (263), one end of the tube body (261) is fixed on the container valve body (10), the other end of the tube body (261) is fixedly connected with the hose (262), the other end of the hose (262) is fixedly connected with the counterweight connector (263), and the counterweight connector (263) is arranged at the bottom of the extinguishing agent bottle body (24).

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