Large-caliber fire extinguisher structure and use method

Abstract

The invention discloses a large-caliber fire extinguisher structure and a using method, the large-caliber fire extinguisher structure comprises a bottle body, the bottle body is filled with dry powder, a valve body is installed at a bottle opening of the bottle body, the valve body is provided with a center hole and a spraying hole used for being externally connected with a spraying pipe, and the spraying hole is connected with a siphon; the valve rod is installed in the center hole, a forcible entry tool bit is arranged at the lower end of the valve rod, and a pressing cap is installed at the top of the valve rod; the safety pull ring is clamped between the pressing cap and the top surface of the valve body in a limiting manner; and the compressed gas bottle is filled with compressed gas, a bottle opening of the compressed gas bottle is connected with the lower end of the center hole, and the compressed gas bottle is arranged in the bottle body. The fire extinguisher disclosed by the invention has the beneficial effects that the fire extinguisher is safe through the safety pull ring, so that the fire extinguisher can be ensured to be stable and safe when the fire extinguisher is not used; and the forcible entry cutter and the forcible entry claw can realize secondary forcible entry, so that the exhaust effect of the compressed gas cylinder is improved, and the use effect of the fire extinguisher is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to fire extinguishers, and in particular to a large-caliber fire extinguisher structure and a using method thereof. Background Art

[0002] Fire extinguishers include carbon dioxide fire extinguishers, dry powder fire extinguishers, etc. Among them, the dry powder fire extinguisher mainly consists of a fire extinguisher bottle body, a nozzle assembly, and a valve assembly arranged at the upper end of the fire extinguisher bottle body. In the existing fire extinguisher structure, a compressed gas cylinder is installed in the valve assembly, and the seal of the compressed gas cylinder needs to be broken during use. The existing structure for breaking the compressed gas cylinder has a poor seal breaking effect, cannot make the gas in the compressed gas cylinder spray out quickly, and the mixing effect of the gas and the dry powder is poor, resulting in a poor use effect of the fire extinguisher.

[0003] To ensure good use effect of the fire extinguisher, it is necessary to improve the structure of the fire extinguisher. Summary of the Invention

[0004] The present invention is to overcome the deficiency of poor use effect in the prior art, and provides a large-caliber fire extinguisher structure and a using method thereof with good use effect.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A large-caliber fire extinguisher structure includes: A bottle body filled with dry powder inside. A valve body is installed at the bottle mouth of the bottle body. The valve body is provided with a central hole and a spraying hole for externally connecting a nozzle. The spraying hole is connected with a siphon tube; A valve rod installed in the central hole. A breaking cutter head is arranged at the lower end of the valve rod, and a pressure cap is installed at the top of the valve rod; A safety pull ring which is limited and clamped between the pressure cap and the top surface of the valve body; A compressed gas cylinder filled with compressed gas inside, and the bottle mouth of the compressed gas cylinder is connected with the lower end of the central hole. The compressed gas cylinder is placed inside the bottle body.

[0006] In the structure of this fire extinguisher, there is a bottle body, and dry powder is filled inside the bottle body. A valve body is installed at the mouth of the bottle body. At the same time, a central hole is provided in the middle of the valve body, and a valve rod is installed in the central hole. At the same time, a spray hole is also provided on the valve body, and the spray hole is located beside the central hole. A siphon tube is installed inside the spray hole, and the siphon tube is located inside the bottle body and the port of the siphon tube is located at the lower end of the bottle body. The outer end of the spray hole is connected to a spray pipe. At the same time, a compressed gas cylinder is installed at the lower end of the central hole, and compressed gas is filled inside the compressed gas cylinder. The mouth of the compressed gas cylinder is provided with a seal. A breaking knife is installed at the lower end of the valve rod, and a pressure cap is provided at the top of the valve rod. At the same time, a safety pull ring is provided at the upper part of the valve body, and the safety pull ring is located between the pressure cap and the valve body, playing a role in supporting the pressure cap, preventing the pressure cap from being pressed down when the fire extinguisher is not in use, and playing an insurance role. When using the fire extinguisher, pull out the safety ring and press down the pressure cap, so that the valve rod and the breaking knife are pressed down synchronously. The breaking knife pierces the seal of the compressed gas cylinder, so that the gas in the compressed gas cylinder enters the bottle body, mixes with the dry powder in the bottle body, passes through the siphon tube and the spray hole and is sprayed out from the spray pipe connected to the spray hole to achieve fire extinguishing. This structure can improve the use effect of the fire extinguisher.

[0007] Preferably, a limit ring is provided at the lower end of the valve body, a screw ring is installed on the outer side of the valve body, the screw ring is clamped with the limit ring, the screw ring is connected to the mouth of the bottle body, a sealing ring is provided on the outer side wall of the limit ring, and an embedding groove is provided at the top of the inner wall of the screw ring. The sealing ring is placed in the embedding groove. Among them, a limit ring is provided at the lower end of the valve body, a screw ring is installed on the outer side of the valve body, the screw ring can be clamped with the limit ring, and the screw ring can be threadedly connected to the mouth of the bottle body. A protrusion is provided on the outer side of the screw ring, and the protrusion can facilitate the tightening of the screw ring by a tightening tool to ensure the stable installation of the screw ring. An embedding groove is provided inside the screw ring. At the same time, a sealing ring is provided on the outer side wall of the limit ring, and the sealing ring plays a sealing role to ensure the sealing effect when the valve body is installed on the bottle body, ensuring the safe and stable use of the fire extinguisher and good use effect.

[0008] Preferably, a sealing gasket is provided at the bottom of the limit ring. The sealing gasket is a hollow ring structure. A sealing strip is provided on the outer side of the sealing gasket. The sealing strip is a hollow structure. The sealing strip is communicated with the sealing gasket. The sealing strip is located at the lower end of the gap between the limit ring and the screw ring. Among them, a sealing gasket is provided at the bottom of the limit ring. The sealing gasket is sleeved on the valve rod. The sealing gasket is a hollow ring mechanism. A sealing strip is provided on the outer side of the sealing gasket. The sealing strip is also a hollow structure. A hole is provided on the outer side wall of the sealing gasket, and the hole makes the sealing gasket and the sealing strip in a communicated state. When installing the screw ring, the sealing strip can block the gap between the screw ring and the limit ring to ensure the sealing performance of the fire extinguisher, ensuring the safe and stable use of the fire extinguisher and good use effect.

[0009] Preferably, the safety ring is provided with a limiting clamping post, a clamping groove is provided on the side wall of one side of the limiting clamping post, the valve rod is placed in the clamping groove, the limiting clamping post is placed between the pressing cap and the upper end surface of the valve body, and a pulling ring is provided on the side wall of the other side of the limiting clamping post. Among them, a limiting clamping post is provided on the safety ring, a clamping groove is formed on the side wall of the limiting clamping post, the clamping groove can enable the valve rod to be clamped, and at the same time, the upper surface of the limiting clamping post contacts the pressing cap installed on the top of the valve rod, and the lower surface of the limiting clamping post contacts the upper end surface of the valve body, so as to limit the valve rod and prevent the pressing cap from being accidentally pressed, resulting in the downward movement of the valve rod. Ensure that when the fire extinguisher is not in use, the valve rod will not damage the seal of the compressed gas cylinder, ensure the use safety, improve the use effect, and at the same time, a pulling ring is provided on the opposite side of the clamping groove of the limiting clamping post, and the pulling ring can facilitate pulling out the limiting clamping post from under the pressing cap when using the fire extinguisher, making the operation convenient and simple and improving the use effect.

[0010] Preferably, an upper screw rod is provided at the upper end of the valve rod, the top surface of the pressing cap is arc-shaped, a connecting screw pipe is provided at the lower end of the pressing cap, and the connecting screw pipe is connected to the upper screw rod. Among them, an upper screw rod is provided at the upper end of the valve rod, and a connecting screw pipe is provided at the lower end of the pressing cap. Threads are provided inside the connecting screw pipe to realize the threaded connection between the pressing cap and the upper screw rod, ensuring the connection stability. At the same time, the top surface of the pressing cap is arc-shaped, and this structural setting can prevent hand injuries during operation and improve the use effect.

[0011] Preferably, a stop block is provided at the upper end of the central hole, a locking block is clamped in the middle of the central hole, a raised block is provided in the middle of the valve rod, a sealing ring is provided below the raised block, and the raised block is placed between the stop block and the locking block. Among them, an annular stop block is provided at the upper end of the central hole. At the same time, a locking block is also provided in the middle of the central hole. The locking block can move along the central hole under a certain pressure and move together with the valve rod. A raised block is provided in the middle of the valve rod. When the valve rod is inserted into the central hole, the raised block is placed between the stop block and the locking block. When the installation is completed, the stop block contacts the raised block to lock the valve rod. At the same time, a sealing ring is provided below the raised block, and the sealing ring plays a role in sealing the valve rod and the central hole. When using the fire extinguisher, press down the pressing cap, and the valve rod is pressed down synchronously. At this time, the valve rod can break the locking block in the central hole and move down synchronously, so that the breaking knife at the lower end of the valve rod breaks the seal of the compressed gas cylinder, ensuring its normal use. This structure can prevent the safety pull ring from coming off when the fire extinguisher does not need to be used, keep the valve rod stopped in place, ensure that the fire extinguisher is not activated when the pressing cap is not pressed down, ensure the use safety, and improve the use effect.

[0012] Preferably, the bottom of the breaking knife is pointed and has a cutting edge. A breaking claw is provided in the middle of the breaking knife. The breaking claw is provided with a plurality of claw heads, and the claw heads are pointed. Among them, the bottom of the breaking knife is pointed, and a cutting edge is provided on the side wall of the bottom of the breaking knife. This structure can facilitate the breaking of the seal of the compressed gas cylinder by the breaking knife. At the same time, a breaking claw is provided in the middle of the breaking knife, and a plurality of claw heads are provided at the lower end of the breaking claw. The claw heads are of a pointed structure, and the plurality of claw heads are arranged at equal intervals. When the breaking knife breaks the seal of the compressed gas cylinder, the claw heads can pierce the seal of the compressed gas cylinder, improve the breaking effect, increase the rate of the gas in the compressed gas cylinder entering the cylinder body, and thus improve the use effect of the fire extinguisher.

[0013] Preferably, an exhaust hole is provided on the side wall at the lower end of the central hole, and the exhaust hole is connected to an exhaust pipe. The exhaust pipe is placed outside the compressed gas cylinder and the pipe orifice of the exhaust pipe is close to the dry powder in the cylinder body. Among them, an exhaust hole is provided on the side wall at the lower end of the central hole, and an exhaust pipe is inserted into the exhaust hole. The exhaust pipe is in interference fit with the exhaust hole to ensure the connection effect. At the same time, the exhaust pipe is placed outside the compressed gas cylinder and the pipe orifice of the exhaust pipe faces the dry powder in the cylinder body. After the seal of the compressed gas cylinder is damaged, the gas is discharged from the compressed gas cylinder, enters the cylinder body through the exhaust hole and the exhaust pipe, the gas is fully mixed with the dry powder to form a fog-like spray flow, enters the spray hole through the siphon tube, and is sprayed out from the external spray pipe to achieve fire extinguishing. This structure can improve the effect of the gas entering the cylinder body, increase the mixing speed of the gas and the dry powder, and thus improve the use effect of the fire extinguisher.

[0014] Preferably, the valve body is provided with a mounting hole, and a pressure detection member is installed in the mounting hole. Among them, a mounting hole is provided on the upper surface of the valve body, and a pressure detection member is installed in the mounting hole. The pressure detection member can use a pressure gauge. By observing the pressure state in the display cylinder of the pressure gauge, the pressure in the cylinder body can be observed to identify the pressure situation in the cylinder body and ensure the normal use of the fire extinguisher.

[0015] The present invention also records a use method of a large-caliber fire extinguisher structure, and the steps are as follows: S1. Pull the pull ring to disengage the limit clamping post from under the pressure cap; S2. Hold the spray pipe connected to the spray hole by hand, press the pressure cap, and use the knife head of the breaking knife and the breaking claw to break the seal of the compressed gas cylinder; S3. The gas in the compressed gas cylinder enters the cylinder body through the exhaust pipe, and the dry powder is mixed with the gas and sprayed out from the spray hole.

[0016] When using this fire extinguisher, first lift the fire extinguisher, pull out the pull ring, so that the limit clamping column disengages from the valve stem and moves out from under the pressure cap, and remove the safety device; then, press down the pressure cap forcefully, while holding the spray hole in hand and connecting it to the spray pipe, aiming at the ignition point. When the pressure cap is pressed down, it drives the valve stem to press down. The raised block in the middle of the valve stem applies a downward pressure on the locking block on the central hole, causing the locking block to disengage from the side wall of the central hole and move downward. When the valve stem moves downward, the breaking knife at the lower end of the valve stem moves downward synchronously. The knife head and breaking claws on the breaking knife pierce and break the seal of the compressed gas cylinder. Among them, the knife head is provided with a cutting edge, which can first pierce the seal of the compressed gas cylinder, and the gas in the compressed gas cylinder is discharged, discharged from the exhaust hole provided on the side wall at the lower end of the central hole, and passes through the exhaust pipe to disperse the dry powder at the lower end of the cylinder body, completing the preliminary mixing. Then, the breaking claws on the breaking knife continue to break the seal of the compressed gas cylinder, improving the breaking effect, increasing the gas output, fully mixing with the dispersed dry powder, improving the mixing effect, and further improving the use effect of the fire extinguisher.

[0017] The beneficial effects of the present invention are: The fire extinguisher realizes the insurance of the fire extinguisher through the safety pull ring, ensuring that the fire extinguisher can be stable and safe when not in use; the breaking knife together with the breaking claws can achieve secondary breaking, improving the exhaust effect of the compressed gas cylinder, and further improving the use effect of the fire extinguisher. Description of the Drawings

[0018] Figure 1 is a sectional view of the present invention; Figure 2 is a top view of the valve body of the present invention; Figure 3 is a partial sectional view of the valve body of the present invention; Figure 4 is a partial sectional view of the valve stem of the present invention; Figure 5 is a sectional view at the position of the breaking knife in the present invention; Figure 6 is a sectional view of the installation hole in the present invention.

[0019] In the drawings, 1. cylinder body, 2. valve body, 3. siphon tube, 4. valve stem, 5. pressure cap, 6. safety pull ring, 7. compressed gas cylinder, 8. screw ring, 20. central hole, 21. spray hole, 22. limit ring, 23. sealing ring, 24. gasket, 25. plugging strip, 26. stop block, 27. locking block, 28. exhaust hole, 29. exhaust pipe, 30. installation hole, 40. breaking knife, 41. upper screw rod, 42. connecting screw tube, 43. raised block, 44. sealing ring, 45. breaking claw, 46. claw head, 60. limit clamping column, 61. clamping groove, 62. pull ring, 80. embedding groove. Detailed Embodiments

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the scope of the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above terms have no special meanings, and thus cannot be construed as limiting the scope of protection of the present application.

[0024] Embodiment 1, as Figure 1-6As shown in the figure, a large-caliber fire extinguisher structure includes: a bottle body 1 filled with dry powder inside; a valve body 2 installed at the bottle mouth of the bottle body 1, the valve body 2 is provided with a central hole 20 and a spray hole 21 for externally connecting a spray pipe, and a siphon tube 3 is connected to the spray hole 21; a valve rod 4 installed in the central hole 20, a breaking knife 40 is arranged at the lower end of the valve rod 4, and a pressure cap 5 is installed at the top of the valve rod 4; a safety pull ring 6, the safety pull ring 6 is limited and clamped between the pressure cap 5 and the top surface of the valve body 2; a compressed gas cylinder 7 filled with compressed gas inside, and the bottle mouth of the compressed gas cylinder 7 is connected to the lower end of the central hole 20, and the compressed gas cylinder 7 is placed inside the bottle body 1.

[0025] A limiting ring 22 is arranged at the lower end of the valve body 2, a screw ring 8 is installed on the outer side of the valve body 2, the screw ring 8 is clamped with the limiting ring 22, the screw ring 8 is connected to the bottle mouth of the bottle body 1, a sealing ring 23 is arranged on the outer side wall of the limiting ring 22, an embedding groove 80 is arranged at the top of the inner wall of the screw ring 8, and the sealing ring 23 is placed in the embedding groove 80.

[0026] A sealing gasket 24 is arranged at the bottom of the limiting ring 22, the sealing gasket 24 is a hollow annular structure, a sealing strip 25 is arranged on the outer side of the sealing gasket 24, the sealing strip 25 is a hollow structure, the sealing strip 25 is communicated with the sealing gasket 24, and the sealing strip 25 is placed at the lower end of the gap between the limiting ring 22 and the screw ring 8.

[0027] The safety pull ring 6 is provided with a limiting clamping post 60, a clamping groove 61 is arranged on the side wall of one side of the limiting clamping post 60, the valve rod 4 is placed in the clamping groove 61, and a pull ring 62 is arranged on the side wall of the other side of the limiting clamping post 60.

[0028] An upper screw rod 41 is arranged at the upper end of the valve rod 4, the top surface of the pressure cap 5 is arc-shaped, a connecting screw tube 42 is arranged at the lower end of the pressure cap 5, and the connecting screw tube 42 is connected with the upper screw rod 41.

[0029] A stop block 26 is arranged at the upper end of the central hole 20, a locking block 27 is clamped in the middle of the central hole 20, a raised block 43 is arranged in the middle of the valve rod 4, a sealing ring 44 is arranged below the raised block 43, and the raised block 43 is placed between the stop block 26 and the locking block 27.

[0030] The bottom of the breaking knife 40 is pointed and has a cutting edge, a breaking claw 45 is arranged in the middle of the breaking knife 40, the breaking claw 45 is provided with a plurality of claw heads 46, and the claw heads 46 are pointed.

[0031] An exhaust hole 28 is arranged on the side wall of the lower end of the central hole 20, an exhaust pipe 29 is connected to the exhaust hole 28, the exhaust pipe 29 is placed outside the compressed gas cylinder 7 and the pipe orifice of the exhaust pipe 29 is close to the dry powder inside the bottle body 1.

[0032] The valve body 2 is provided with an installation hole 30, and a pressure detection member is installed in the installation hole 30.

[0033] The working principle of the present invention is as follows: As Figure 1-6 shown, in the structure of this fire extinguisher, there is a bottle body 1, and dry powder is filled inside the bottle body 1. A valve body 2 is installed at the mouth of the bottle body 1. At the same time, a central hole 20 is provided in the middle of the valve body 2, and a valve rod 4 is installed in the central hole 20. At the same time, a spray hole 21 is also provided on the valve body 2, and the spray hole 21 is located beside the central hole 20. A siphon tube 3 is installed inside the spray hole 21. The siphon tube 3 is located inside the bottle body 1 and the port of the siphon tube 3 is at the lower end of the bottle body 1. The outer end of the spray hole 21 is connected to a spray pipe. At the same time, a compressed gas cylinder 7 is installed at the lower end of the central hole 20. Compressed gas is filled inside the compressed gas cylinder 7, and the mouth of the compressed gas cylinder 7 is provided with a seal. A breaking knife 40 is installed at the lower end of the valve rod 4, and a pressure cap 5 is provided at the top of the valve rod 4. At the same time, a safety pull ring 6 is provided on the upper part of the valve body 2. The safety pull ring 6 is located between the pressure cap 5 and the valve body 2, playing a role in supporting the pressure cap 5 to prevent the pressure cap 5 from being pressed down when the fire extinguisher is not in use, playing a safety role. When using the fire extinguisher, pull out the safety ring and press down the pressure cap 5, so that the valve rod 4 and the breaking knife 40 are pressed down synchronously. The breaking knife 40 pierces the seal of the compressed gas cylinder 7, so that the gas in the compressed gas cylinder 7 enters the bottle body 1, mixes with the dry powder in the bottle body 1, passes through the siphon tube 3 and the spray hole 21 and is sprayed out from the spray pipe connected to the spray hole 21 to achieve fire extinguishing. This structure can improve the use effect of the fire extinguisher.

[0034] Among them, a limiting ring 22 is provided at the lower end of the valve body 2. A screw ring 8 is installed on the outside of the valve body 2. The screw ring 8 can be clamped with the limiting ring 22. The screw ring 8 can be threadedly connected with the mouth of the bottle body 1. A protrusion is provided on the outside of the screw ring 8, which can facilitate the tightening of the screw ring 8 through a tightening tool to ensure the stable installation of the screw ring 8. An embedding groove 80 is provided inside the screw ring 8. At the same time, a sealing ring 23 is provided on the outer wall of the limiting ring 22. The sealing ring 23 plays a sealing role to ensure the sealing effect when the valve body 2 and the bottle body 1 are installed, ensuring the safe and stable use of the fire extinguisher and good use effect.

[0035] Among them, a sealing gasket 24 is provided at the bottom of the limiting ring 22. The sealing gasket 24 is sleeved on the valve rod 4. The sealing gasket 24 is a hollow annular structure. A blocking strip 25 is provided on the outside of the sealing gasket 24. The blocking strip 25 is also a hollow structure. A hole is provided on the outer wall of the sealing gasket 24, so that the sealing gasket 24 and the blocking strip 25 are in a communicating state. When installing the screw ring 8, the blocking strip 25 can block the gap between the screw ring 8 and the limiting ring 22 to ensure the sealing performance of the fire extinguisher, ensuring the safe and stable use of the fire extinguisher and good use effect.

[0036] Among them, a limit clamping post 60 is provided on the safety ring. A clamping groove 61 is formed on the side wall of the limit clamping post 60. The clamping groove 61 allows the valve stem 4 to be inserted. At the same time, the upper surface of the limit clamping post 60 contacts the compression cap 5 installed at the top of the valve stem 4, and the lower surface of the limit clamping post 60 contacts the upper end surface of the valve body 2, so as to limit the valve stem 4 and prevent the compression cap 5 from being accidentally pressed, resulting in the downward movement of the valve stem 4. When the fire extinguisher is not in use, it ensures that the valve stem 4 will not damage the seal of the compressed gas cylinder 7, ensuring safe use and improving the use effect. At the same time, a pull ring 62 is provided on the opposite side of the clamping groove 61 of the limit clamping post 60. The pull ring 62 can facilitate pulling out the limit clamping post 60 from under the compression cap 5 when using the fire extinguisher, making the operation convenient and simple and improving the use effect.

[0037] Among them, an upper screw 41 is provided at the upper end of the valve stem 4, and a connecting screw tube 42 is provided at the lower end of the compression cap 5. Threads are provided inside the connecting screw tube 42 to realize the threaded connection between the compression cap 5 and the upper screw 41, ensuring the connection stability. At the same time, the top surface of the compression cap 5 is an arc surface, and this structural setting can prevent hand injuries during operation and improve the use effect.

[0038] Among them, an annular stop block 26 is provided at the upper end of the central hole 20. At the same time, a locking block 27 is also provided in the middle of the central hole 20. The locking block 27 can displace along the central hole 20 under a certain pressure and move together with the valve stem 4. A raised block 43 is provided in the middle of the valve stem 4. When the valve stem 4 is inserted into the central hole 20, the raised block 43 is located between the stop block 26 and the locking block 27. When the installation is completed, the stop block 26 contacts the raised block 43 to lock the valve stem 4. At the same time, a sealing ring 44 is provided below the raised block 43, and the sealing ring 44 serves to seal the valve stem 4 and the central hole 20. When using the fire extinguisher, pressing down the compression cap 5 causes the valve stem 4 to be pressed down synchronously. At this time, the valve stem 4 can break the locking block 27 in the central hole 20 and move downward synchronously, enabling the breaking knife 40 at the lower end of the valve stem 4 to break the seal of the compressed gas cylinder 7 and ensuring its normal use. This structure can prevent the safety pull ring 6 from loosening when the fire extinguisher does not need to be used, keeping the valve stem 4 stationary in place. It ensures that the fire extinguisher is not activated when the compression cap 5 is not pressed down, ensuring safe use and improving the use effect.

[0039] Among them, the bottom of the breaking knife 40 is pointed, and a cutting edge is provided on the side wall at the bottom of the breaking knife 40. This structure can facilitate the breaking knife 40 to break the seal of the compressed gas cylinder 7. At the same time, a breaking claw 45 is provided in the middle of the breaking knife 40, and several claw heads 46 are provided at the lower end of the breaking claw 45. The claw heads 46 are pointed structures, and several claw heads 46 are arranged at equal intervals. When the breaking knife 40 breaks the seal of the compressed gas cylinder 7, the claw heads 46 can pierce the seal of the compressed gas cylinder 7, improving the breaking effect and the rate of gas in the compressed gas cylinder 7 entering the bottle body 1, thereby improving the use effect of the fire extinguisher.

[0040] Among them, an exhaust hole 28 is provided on the lower side wall of the central hole 20, and an exhaust pipe 29 is inserted into the exhaust hole 28. The exhaust pipe 29 is in interference fit with the exhaust hole 28 to ensure the connection effect. At the same time, the exhaust pipe 29 is placed outside the compressed gas cylinder 7 and the nozzle of the exhaust pipe 29 faces the dry powder inside the cylinder body 1. After the seal of the compressed gas cylinder 7 is damaged, the gas is discharged from the compressed gas cylinder 7, enters the cylinder body 1 through the exhaust hole 28 and the exhaust pipe 29, and the gas is fully mixed with the dry powder to form a mist-like jet flow, which enters the ejection hole 21 through the siphon tube 3 and is ejected from the externally connected nozzle to achieve fire extinguishing. This structure can improve the effect of the gas entering the cylinder body 1, increase the mixing speed of the gas and the dry powder, and further improve the use effect of the fire extinguisher.

[0041] Among them, an installation hole 30 is provided on the upper surface of the valve body 2, and a pressure detection member is installed inside the installation hole 30. The pressure detection member can use a pressure gauge. By observing the pressure state in the display cylinder of the pressure gauge, the pressure inside the cylinder body 1 can be observed to identify the pressure condition inside the cylinder body 1 and ensure the normal use of the fire extinguisher.

[0042] Embodiment 2, a method for using a large-diameter fire extinguisher structure, the steps are as follows: S1. Pull the pull ring 62 to disengage the limit clamping post 60 from under the pressure cap 5; S2. Hold the nozzle connected to the ejection hole 21 by hand, press the pressure cap 5, and use the cutter head of the demolition knife 40 to demolish the sealing cover of the compressed gas cylinder 7 with the demolition claw 45; S3. The gas in the compressed gas cylinder 7 enters the cylinder body 1 through the exhaust pipe 29, and the dry powder is mixed with the gas and ejected from the ejection hole 21.

[0043] When using this fire extinguisher, first pick up the fire extinguisher, pull out the pull ring, so that the limit clamping column 60 disengages from the valve stem 4 and moves out from below the pressure cap 5 to remove the safety device; then, press down the pressure cap 5 forcefully, while holding the ejection hole 21 connected to the nozzle in hand and aiming at the ignition point. When the pressure cap 5 is pressed down, it drives the valve stem 4 to press down. The raised block 43 in the middle of the valve stem 4 applies a downward pressure to the locking block 27 on the central hole 20, causing the locking block 27 to disengage from the side wall of the central hole 20 and move downward. When the valve stem 4 moves downward, the breaking knife 40 at the lower end of the valve stem 4 moves downward synchronously. The cutter head and the breaking claws 45 on the breaking knife 40 pierce and break the seal of the compressed gas cylinder 7. Among them, the cutter head is provided with a cutting edge, which can first pierce the seal of the compressed gas cylinder 7. The gas in the compressed gas cylinder 7 is discharged and discharged from the exhaust hole 28 provided on the side wall at the lower end of the central hole 20. After passing through the exhaust pipe 29, the dry powder at the lower end of the cylinder body 1 is dispersed to complete the preliminary mixing. Then, the breaking claws 45 on the breaking knife 40 continue to break the seal of the compressed gas cylinder 7 to improve the breaking effect, increase the gas output, fully mix with the dispersed dry powder, improve the mixing effect, and thus improve the use effect of the fire extinguisher.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A large-caliber fire extinguisher structure, characterized in that, Comprising: A bottle body (1) filled with dry powder inside. A valve body (2) is installed at the mouth of the bottle body (1). The valve body (2) is provided with a central hole (20) and a jet hole (21) for connecting an external spray pipe. The jet hole (21) is connected to a siphon tube (3); A valve rod (4) installed inside the central hole (20). A breaking knife (40) is provided at the lower end of the valve rod (4), and a pressure cap (5) is installed at the top of the valve rod (4); A safety pull ring (6) which is limited and clamped between the pressure cap (5) and the top surface of the valve body (2); A compressed gas cylinder (7) filled with compressed gas and the mouth of the compressed gas cylinder (7) is connected to the lower end of the central hole (20). The compressed gas cylinder (7) is placed inside the bottle body (1).

2. The structure of a large-caliber fire extinguisher according to claim 1, characterized in that, A limiting ring (22) is provided at the lower end of the valve body (2). A spiral ring (8) is installed outside the valve body (2). The spiral ring (8) is clamped with the limiting ring (22). The spiral ring (8) is connected to the mouth of the bottle body (1). A sealing ring (23) is provided on the outer side wall of the limiting ring (22). An embedding groove (80) is provided at the top inner wall of the spiral ring (8). The sealing ring (23) is placed inside the embedding groove (80).

3. The structure of a large-caliber fire extinguisher according to claim 2, characterized in that, A sealing gasket (24) is provided at the bottom of the limiting ring (22). The sealing gasket (24) is a hollow annular structure. A blocking strip (25) is provided on the outer side of the sealing gasket (24). The blocking strip (25) is a hollow structure. The blocking strip (25) communicates with the sealing gasket (24). The blocking strip (25) is placed at the lower end of the gap between the limiting ring (22) and the spiral ring (8).

4. A large-caliber fire extinguisher structure according to claim 1, characterized in that, The safety pull ring (6) is provided with a limiting clamping post (60). A clamping groove (61) is provided on the side wall of one side of the limiting clamping post (60). The valve rod (4) is placed inside the clamping groove (61). The limiting clamping post (60) is placed between the pressure cap (5) and the upper end surface of the valve body (2). A pull ring (62) is provided on the side wall of the other side of the limiting clamping post (60).

5. The structure of a large-caliber fire extinguisher according to claim 1, characterized in that, An upper screw rod (41) is provided at the upper end of the valve rod (4). The top surface of the pressure cap (5) is arc-shaped. A connecting screw tube (42) is provided at the lower end of the pressure cap (5). The connecting screw tube (42) is connected to the upper screw rod (41).

6. The structure of a large-caliber fire extinguisher according to claim 1, characterized in that, A stop block (26) is provided at the upper end of the central hole (20). A locking block (27) is clamped in the middle of the central hole (20). A raised block (43) is provided in the middle of the valve rod (4). A sealing ring (44) is provided below the raised block (43). The raised block (43) is placed between the stop block (26) and the locking block (27).

7. A large-caliber fire extinguisher structure according to claim 1, characterized in that, The bottom of the breaking knife (40) is pointed and has a cutting edge. A breaking claw (45) is provided in the middle of the breaking knife (40). The breaking claw (45) is provided with a number of claw heads (46). The claw heads (46) are pointed.

8. The structure of a large-caliber fire extinguisher according to claim 1, characterized in that, An exhaust hole (28) is provided on the side wall at the lower end of the central hole (20). The exhaust hole (28) is connected to an exhaust pipe (29). The exhaust pipe (29) is placed outside the compressed gas cylinder (7) and the pipe orifice of the exhaust pipe (29) is close to the dry powder inside the bottle body (1).

9. The structure of a large-caliber fire extinguisher according to claim 1, characterized in that, The valve body (2) is provided with a mounting hole (30), and a pressure detecting member is installed in the mounting hole (30).

10. A method of using a large-caliber fire extinguisher structure according to any one of claims 1-9, characterized in that the steps As follows: S1. Pull the pull ring (62) to disengage the limit clamping post (60) from under the compression cap (5); S2. Hold the spray pipe connected to the spray hole (21) by hand, press the compression cap (5), and use the cutter head of the demolition knife (40) to seal and demolish the compressed gas cylinder (7) with the demolition claw (45); S3. The gas in the compressed gas cylinder (7) enters the cylinder body (1) through the exhaust pipe (29), and the dry powder is mixed with the gas and sprayed out from the spray hole (21).

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