Large-caliber coil fire extinguisher structure

Abstract

The utility model discloses a large-caliber coil fire extinguisher structure which comprises a bottle body, dry powder is filled in the bottle body, a valve body is installed on 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 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 not in use; 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] This utility model relates to the technical field of fire extinguishers, and in particular to a structure for a large-diameter spiral fire extinguisher. Background Technology

[0002] Fire extinguishers include carbon dioxide fire extinguishers and dry powder fire extinguishers. Dry powder fire extinguishers mainly consist of an extinguisher cylinder, a nozzle assembly, and a valve assembly located at the top of the cylinder. In existing fire extinguisher structures, a compressed gas cylinder is installed within the valve assembly, requiring the cylinder's seal to be broken during use. Current methods for breaking the compressed gas cylinder are ineffective at breaking the seal, preventing the gas from being released quickly and resulting in poor mixing of the gas and dry powder, thus reducing the extinguisher's effectiveness.

[0003] To ensure the effectiveness of fire extinguishers, their structure needs to be improved. Utility Model Content

[0004] The present invention aims to overcome the shortcomings of existing technologies in terms of poor performance and provides a large-diameter spiral fire extinguisher structure with good performance.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a large-diameter spiral fire extinguisher structure, comprising:

[0006] The bottle body is filled with dry powder. A valve body is installed at the bottle mouth. The valve body is provided with a central hole and a spray hole for connecting an external spray pipe. The spray hole is connected to a siphon tube.

[0007] A valve stem is installed in a central hole, a demolition cutter head is provided at the lower end of the valve stem, and a pressure cap is installed at the top of the valve stem;

[0008] A safety pull ring, wherein the safety pull ring is locked between the pressure cap and the top surface of the valve body;

[0009] A compressed gas cylinder, wherein the compressed gas cylinder is filled with compressed gas and the cylinder opening is connected to the lower end of the central hole, and the compressed gas cylinder is placed inside the cylinder body.

[0010] This fire extinguisher consists of a cylinder filled with dry powder. A valve body is installed at the cylinder opening, with a central hole in the middle. A valve stem is installed within this central hole. A spray nozzle is located beside the central hole, and a siphon tube is installed inside the spray nozzle, positioned within the cylinder with its end at the lower end. A nozzle hose is connected to the outer end of the spray nozzle. A compressed gas cylinder filled with compressed gas is installed below the central hole, and its opening is sealed. A breaching knife is installed at the lower end of the valve stem, and a pressure cap is located at the top of the stem. A safety pull ring is located at the upper part of the valve body, positioned between the pressure cap and the valve body. This safety pull ring supports the pressure cap, preventing it from collapsing when the extinguisher is not in use, thus providing a safety function. When using a fire extinguisher, pull the safety ring and press down the cap, causing the valve stem and the breaching blade to press down simultaneously. The breaching blade punctures the seal of the compressed gas cylinder, allowing the gas inside the cylinder to enter the cylinder body, mix with the dry powder inside the cylinder, pass through the siphon tube and the nozzle, and be sprayed out from the nozzle connected to the nozzle to extinguish the fire. This structure can improve the effectiveness of the fire extinguisher.

[0011] Preferably, a limiting ring is provided at the lower end of the valve body, and a screw ring is installed on the outer side of the valve body. The screw ring engages with the limiting ring and connects to the bottle opening. A sealing ring is provided on the outer wall of the limiting ring, and an embedding groove is provided on the top of the inner wall of the screw ring, with the sealing ring placed in the embedding groove. Specifically, the limiting ring at the lower end of the valve body, with the screw ring installed on its outer side, allows for engagement with the limiting ring and threaded connection to the bottle opening. A protrusion is provided on the outer side of the screw ring, facilitating tightening with a tightening tool to ensure stable installation. An embedding groove is provided inside the screw ring. Simultaneously, a sealing ring is provided on the outer wall of the limiting ring, providing a seal to ensure a tight seal between the valve body and the bottle, guaranteeing safe and stable use of the fire extinguisher and ensuring good performance.

[0012] Preferably, a sealing gasket is provided at the bottom of the limiting ring. The sealing gasket is a hollow annular structure. A sealing strip is provided on the outside of the sealing gasket. The sealing strip is also a hollow structure and communicates with the sealing gasket. The sealing strip is positioned at the lower end of the gap between the limiting ring and the screw ring. Specifically, the sealing gasket at the bottom of the limiting ring is fitted onto the valve stem. The sealing gasket is a hollow annular structure, and the sealing strip on its outside is also a hollow structure. A hole is provided on the outer wall of the sealing gasket, allowing communication between the sealing gasket and the sealing strip. During screw ring installation, the sealing strip can seal the gap between the screw ring and the limiting ring, ensuring the fire extinguisher's airtightness, safe and stable use, and good performance.

[0013] Preferably, the safety ring is equipped with a limiting pin, and a groove is provided on one side wall of the limiting pin. The valve stem is placed in the groove, and the limiting pin is positioned between the pressure cap and the upper end face of the valve body. A pull ring is provided on the other side wall of the limiting pin. The limiting pin on the safety ring, with its groove on its side wall, allows the valve stem to engage. Simultaneously, the upper surface of the limiting pin contacts the pressure cap mounted on the top of the valve stem, and the lower surface of the limiting pin contacts the upper end face of the valve body. This limits the valve stem, preventing the pressure cap from being compressed and causing the valve stem to move downwards. This ensures that the valve stem will not damage the seal of the compressed gas cylinder when the fire extinguisher is not in use, guaranteeing safety and improving effectiveness. Furthermore, a pull ring is provided on the opposite side of the groove of the limiting pin, allowing the limiting pin to be easily pulled out from under the pressure cap when using the fire extinguisher, making operation convenient and simple, and further improving effectiveness.

[0014] Preferably, the upper end of the valve stem is provided with an upper screw, the top surface of the pressure cap is arc-shaped, and the lower end of the pressure cap is provided with a connecting threaded tube, which is connected to the upper screw. Specifically, the upper screw at the upper end of the valve stem and the connecting threaded tube at the lower end of the pressure cap, with internal threads, achieve a threaded connection between the pressure cap and the upper screw, ensuring connection stability. Furthermore, the arc-shaped top surface of the pressure cap reduces the risk of hand injury during operation, improving usability.

[0015] Preferably, a stop block is provided at the upper end of the central hole, a locking block is engaged in the middle of the central hole, a protrusion is provided in the middle of the valve stem, a sealing ring is provided below the protrusion, and the protrusion is positioned between the stop block and the locking block. The design incorporates several features. A ring-shaped stop block is located at the upper end of the central hole, while a locking block is positioned in the middle. This locking block displaces along the central hole under pressure, moving with the valve stem. A protruding block is located in the middle of the valve stem. When the valve stem is inserted into the central hole, the protruding block is positioned between the stop block and the locking block. Upon completion of installation, the stop block contacts the protruding block, locking the valve stem. A sealing ring is located below the protruding block, sealing the valve stem and the central hole. When using the fire extinguisher, pressing down the pressure cap simultaneously lowers the valve stem, breaking the locking block in the central hole and causing it to move downwards. This allows the valve stem's lower end to break the seal of the compressed gas cylinder, ensuring normal operation. This structure prevents the valve stem from remaining stationary when the safety pull ring loosens, ensuring the fire extinguisher remains activated when the pressure cap is not pressed down, thus enhancing safety and effectiveness.

[0016] Preferably, the breaching knife has a pointed bottom with a cutting edge, and a breaching claw is provided in the middle of the breaching knife. The breaching claw has several pointed claw heads. The pointed bottom of the breaching knife, with a cutting edge on its bottom sidewall, facilitates the breaching knife's ability to break the seal of the compressed gas cylinder. The breaching claw in the middle of the knife, with several pointed claw heads at its lower end, and these claw heads being evenly spaced, allows the claw heads to pierce the seal of the compressed gas cylinder during breaching, improving the breaching effect, increasing the rate at which gas enters the cylinder, and thus enhancing the effectiveness of the fire extinguisher.

[0017] Preferably, a vent hole is provided on the lower sidewall of the central hole, and a vent pipe is connected to the vent hole. The vent pipe is positioned outside the compressed gas cylinder, with its opening close to the dry powder inside the cylinder. Specifically, the vent hole on the lower sidewall of the central hole houses the vent pipe, which is interference-fitted to ensure a secure connection. The vent pipe is positioned outside the compressed gas cylinder with its opening facing the dry powder inside. When the seal of the compressed gas cylinder is broken, gas is released from the cylinder, enters the cylinder through the vent hole and vent pipe, mixes thoroughly with the dry powder, forming a mist-like jet. This mist then enters the nozzle through a siphon tube and is ejected from the external nozzle to extinguish the fire. This structure improves the efficiency of gas entry into the cylinder and increases the mixing speed between the gas and dry powder, thereby enhancing the effectiveness of the fire extinguisher.

[0018] Preferably, the valve body is provided with a mounting hole, and a pressure detection element is installed in the mounting hole. Specifically, the mounting hole is provided on the upper surface of the valve body, and the pressure detection element is installed inside the mounting hole. This pressure detection element can be a pressure gauge. By observing the pressure status inside the cylinder displayed on the pressure gauge, the pressure inside the cylinder can be observed, which is used to identify the pressure status inside the cylinder and ensure that the fire extinguisher can be used normally.

[0019] The beneficial effects of this utility model are: the fire extinguisher is secured by a safety pull ring, ensuring its stability and safety when not in use; the breaching knife and breaching claws enable secondary breaching, improving the exhaust effect of the compressed gas cylinder, thereby enhancing the effectiveness of the fire extinguisher. Attached Figure Description

[0020] Figure 1 This is a sectional view of the present invention;

[0021] Figure 2 This is a top view of the valve body of this utility model;

[0022] Figure 3 This is a partial sectional view of the valve body of this utility model;

[0023] Figure 4 This is a partial sectional view of the valve stem of this utility model;

[0024] Figure 5 This is a cross-sectional view of the demolition blade in this utility model;

[0025] Figure 6 This is a cross-sectional view of the mounting hole in this utility model.

[0026] In the attached diagram, 1. Bottle 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. Center hole, 21. Ejection hole, 22. Limiting ring, 23. Sealing ring, 24. Sealing gasket, 25. Sealing strip, 26. Stop block, 27. Locking block, 28. Exhaust hole, 29. Exhaust pipe, 30. Mounting hole, 40. Breaking knife, 41. Upper screw, 42. Connecting screw, 43. Protrusion block, 44. Sealing ring, 45. Breaking claw, 46. Claw head, 60. Limiting pin, 61. Slot, 62. Pull ring, 80. Embedded groove. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, 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.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components illustrated in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0031] Example 1, such as Figure 1-6 As shown, a large-diameter spiral fire extinguisher structure includes: a cylinder body 1 filled with dry powder, a valve body 2 installed at the cylinder body 1 opening, the valve body 2 having a central hole 20 and a spray hole 21 for connecting an external nozzle, the spray hole 21 being connected to a siphon tube 3; a valve stem 4 installed within the central hole 20, a breaching knife 40 at the lower end of the valve stem 4, and a pressure cap 5 installed at the top of the valve stem 4; a safety pull ring 6, which is locked between the pressure cap 5 and the top surface of the valve body 2; and a compressed gas cylinder 7 filled with compressed gas, the cylinder opening of which is connected to the lower end of the central hole 20, the compressed gas cylinder 7 being placed inside the cylinder body 1.

[0032] 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 is engaged 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 provided on the outer wall of the limiting ring 22. An embedding groove 80 is provided on the top of the inner wall of the screw ring 8. The sealing ring 23 is placed in the embedding groove 80.

[0033] A sealing gasket 24 is provided at the bottom of the limiting ring 22. The sealing gasket 24 is a hollow annular structure. A sealing strip 25 is provided on the outside of the sealing gasket 24. The sealing strip 25 is a hollow structure and is connected to the sealing gasket 24. The sealing strip 25 is placed at the lower end of the gap between the limiting ring 22 and the screw ring 8.

[0034] The safety pull ring 6 is provided with a limiting pin 60. A groove 61 is provided on one side wall of the limiting pin 60, and the valve stem 4 is placed in the groove 61. A pull ring 62 is provided on the other side wall of the limiting pin 60.

[0035] The upper end of the valve stem 4 is provided with an upper screw 41, the top surface of the pressure cap 5 is arc-shaped, and the lower end of the pressure cap 5 is provided with a connecting screw tube 42, which is connected to the upper screw 41.

[0036] A stop block 26 is provided at the upper end of the central hole 20, a locking block 27 is engaged in the middle of the central hole 20, a protrusion block 43 is provided in the middle of the valve stem 4, a sealing ring 44 is provided below the protrusion block 43, and the protrusion block 43 is placed between the stop block 26 and the locking block 27.

[0037] The demolition knife 40 has a pointed bottom with a cutting edge, and a demolition claw 45 is provided in the middle of the demolition knife 40. The demolition claw 45 is provided with a plurality of claw heads 46, and the claw heads 46 are pointed.

[0038] A vent hole 28 is provided on the lower side wall of the central hole 20. The vent hole 28 is connected to a vent pipe 29. The vent pipe 29 is placed outside the compressed gas cylinder 7 and the opening of the vent pipe 29 is close to the dry powder inside the cylinder 1.

[0039] The valve body 2 is provided with a mounting hole 30, and a pressure detection element is installed in the mounting hole 30.

[0040] The working principle of this utility model is as follows: Figure 1-6As shown, this fire extinguisher structure includes a cylinder 1, which is filled with dry powder. A valve body 2 is installed at the mouth of the cylinder 1. A central hole 20 is located in the middle of the valve body 2, and a valve stem 4 is installed inside the central hole 20. A spray hole 21 is also provided on the valve body 2, located beside the central hole 20. A siphon tube 3 is installed inside the spray hole 21, positioned inside the cylinder 1 with its end at the lower end of the cylinder 1. A nozzle is connected to the outer end of the spray hole 21. A compressed gas cylinder 7 is installed at the lower end of the central hole 20, filled with compressed gas, and its mouth is sealed. A breaching blade 40 is installed at the lower end of the valve stem 4, and a pressure cap 5 is installed at the top of the valve stem 4. Simultaneously, a safety pull ring 6 is installed at the upper part of the valve body 2. The safety pull ring 6 is positioned between the pressure cap 5 and the valve body 2, supporting the pressure cap 5 and preventing it from collapsing when the fire extinguisher is not in use, thus providing a safety function. When using the fire extinguisher, pulling the safety ring and pressing down the pressure cap 5 causes the valve stem 4 and the breaching blade 40 to press down simultaneously. The breaching blade 40 punctures the seal of the compressed gas cylinder 7, allowing the gas inside the compressed gas cylinder 7 to enter the cylinder body 1. There, the gas mixes with the dry powder inside the cylinder body 1, passes through the siphon tube 3 and the nozzle 21, and is ejected from the nozzle connected to the nozzle 21, thus extinguishing the fire. This structure improves the effectiveness of the fire extinguisher.

[0041] The valve body 2 has a limiting ring 22 at its lower end. A screw ring 8 is installed on the outer side of the valve body 2. The screw ring 8 and the limiting ring 22 can be engaged. The screw ring 8 can be threaded to the mouth of the bottle body 1. A protrusion is provided on the outer side of the screw ring 8, which can be easily tightened with a tightening tool to ensure the stable installation of the screw ring 8. An embedded 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 its good performance.

[0042] A sealing gasket 24 is provided at the bottom of the limiting ring 22. The sealing gasket 24 is fitted onto the valve stem 4. The sealing gasket 24 is a hollow annular structure. A sealing strip 25 is provided on the outside of the sealing gasket 24. The sealing strip 25 is also a hollow structure. A hole is provided on the outer wall of the sealing gasket 24, which allows the sealing gasket 24 and the sealing strip 25 to be in a connected state. When the screw ring 8 is installed, the sealing strip 25 can seal the gap between the screw ring 8 and the limiting ring 22, ensuring the sealing performance of the fire extinguisher, ensuring the safe and stable use of the fire extinguisher, and ensuring good use effect.

[0043] The safety ring is equipped with a limiting pin 60, and the side wall of the limiting pin 60 has a groove 61. The groove 61 allows the valve stem 4 to be engaged. At the same time, the upper surface of the limiting pin 60 contacts the pressure cap 5 installed on the top of the valve stem 4, and the lower surface of the limiting pin 60 contacts the upper end face of the valve body 2. This limits the valve stem 4, preventing the pressure cap 5 from being pressed down and causing the valve stem 4 to move downward. This ensures that the valve stem 4 will not damage the seal of the compressed gas cylinder 7 when the fire extinguisher is not in use, ensuring safety and improving the effectiveness of use. At the same time, a pull ring 62 is provided on the opposite side of the groove 61 of the limiting pin 60. The pull ring 62 allows the limiting pin 60 to be easily pulled out from under the pressure cap 5 when using the fire extinguisher, making operation convenient and simple, and improving the effectiveness of use.

[0044] The valve stem 4 has an upper screw 41 at the upper end and a connecting screw tube 42 at the lower end of the pressure cap 5. The connecting screw tube 42 has internal threads to achieve threaded connection between the pressure cap 5 and the upper screw 41, ensuring connection stability. At the same time, the top surface of the pressure cap 5 is arc-shaped. This structure design can improve the operation and prevent hand injuries, thus improving the performance.

[0045] An annular stop block 26 is provided at the upper end of the central hole 20, and a locking block 27 is provided in the middle of the central hole 20. The locking block 27 can be displaced along the central hole 20 under certain pressure and moves together with the valve stem 4. A protrusion 43 is provided in the middle of the valve stem 4. When the valve stem 4 is inserted into the central hole 20, the protrusion 43 is positioned between the stop block 26 and the locking block 27. When the installation is completed, the stop block 26 contacts the protrusion 43 to lock the valve stem 4. At the same time, a sealing seal is provided below the protrusion 43. The sealing ring 44 seals the valve stem 4 and the central hole 20. When using the fire extinguisher, pressing down the cap 5 causes the valve stem 4 to press down simultaneously. At this time, the valve stem 4 can break the locking block 27 in the central hole 20 and move down simultaneously, so that the breaking knife 40 at the lower end of the valve stem 4 can break the seal of the compressed gas cylinder 7, ensuring its normal use. This structure can prevent the valve stem 4 from being stopped in its original position after the safety pull ring 6 comes loose when the fire extinguisher is not needed, ensuring that the fire extinguisher is not activated when the cap 5 is not pressed down, ensuring safety and improving the effectiveness of use.

[0046] The bottom of the breaching knife 40 is pointed, and a cutting edge is provided on the bottom side wall of the breaching knife 40. This structure facilitates the breaching knife 40 to break the seal of the compressed gas cylinder 7. At the same time, a breaching claw 45 is provided in the middle of the breaching knife 40, and several claw heads 46 are provided at the lower end of the breaching claw 45. The claw heads 46 are pointed and arranged at equal intervals. When the breaching 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, improve the breaching effect, increase the rate at which gas in the compressed gas cylinder 7 enters the cylinder body 1, and thus improve the effectiveness of the fire extinguisher.

[0047] The fire extinguisher features an exhaust port 28 on the lower side wall of the central hole 20. An exhaust pipe 29 is inserted inside the exhaust port 28, with an interference fit between the exhaust pipe 29 and the exhaust port 28 to ensure a good connection. The exhaust pipe 29 is positioned outside the compressed gas cylinder 7 with its opening facing the dry powder inside the cylinder 1. When the seal of the compressed gas cylinder 7 is broken, the gas is discharged from the cylinder 7 and enters the cylinder 1 through the exhaust port 28 and the exhaust pipe 29. The gas mixes thoroughly with the dry powder to form a mist-like jet, which enters the nozzle 21 through the siphon pipe 3 and is then sprayed out from the external nozzle to extinguish the fire. This structure improves the efficiency of gas entering the cylinder 1 and increases the mixing speed between the gas and the dry powder, thereby enhancing the effectiveness of the fire extinguisher.

[0048] The valve body 2 has a mounting hole 30 on its upper surface. A pressure detection element is installed inside the mounting hole 30. The pressure detection element can be a pressure gauge. By observing the pressure status inside the cylinder displayed by the pressure gauge, the pressure inside the cylinder 1 can be observed, which is used to identify the pressure status inside the cylinder 1 and ensure that the fire extinguisher can be used normally.

[0049] When using this fire extinguisher, first lift the extinguisher and pull the pull ring to disengage the limiting pin 60 from the valve stem 4 and remove it from under the pressure cap 5, then remove the safety device. Next, press down firmly on the pressure cap 5 while simultaneously holding the nozzle 21 connected to the nozzle and pointing it towards the fire. As the pressure cap 5 is pressed down, it causes the valve stem 4 to press down as well. The protrusion 43 in the middle of the valve stem 4 applies 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. As the valve stem 4 moves downward, the demolition blade 40 at the lower end of the valve stem 4 moves downward simultaneously. The blade and piercing claw 45 on the piercing blade 40 puncture the seal of the compressed gas cylinder 7. The blade has a cutting edge that can first puncture the seal of the compressed gas cylinder 7, allowing the gas inside the compressed gas cylinder 7 to be discharged. The gas is discharged from the exhaust hole 28 on the lower side wall of the central hole 20 and passes through the exhaust pipe 29, which disperses the dry powder at the lower end of the cylinder 1, completing the initial mixing. Then, the piercing claw 45 on the piercing blade 40 continues to break the seal of the compressed gas cylinder 7, improving the piercing effect, increasing the gas output, and fully mixing with the dispersed dry powder, thus improving the mixing effect and the effectiveness of the fire extinguisher.

[0050] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A large-diameter spiral fire extinguisher structure, characterized in that, include: Bottle body (1), the bottle body (1) is filled with dry powder, the bottle body (1) is equipped with a valve body (2) at the bottle mouth, the valve body (2) is provided with a central hole (20) and a spray hole (21) for connecting an external spray pipe, and the spray hole (21) is connected to a siphon pipe (3). Valve stem (4), the valve stem (4) is installed in the center hole (20), the lower end of the valve stem (4) is provided with a demolition knife (40), and the top of the valve stem (4) is provided with a pressure cap (5). Safety pull ring (6), the safety pull ring (6) is locked between the pressure cap (5) and the top surface of the valve body (2); A compressed gas cylinder (7) is 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-diameter spiral 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 screw ring (8) is installed on the outside of the valve body (2). The screw ring (8) is engaged 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 provided on the outer wall of the limiting ring (22). An embedding groove (80) is provided on the top of the inner wall of the screw ring (8). The sealing ring (23) is placed in the embedding groove (80).

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

4. The structure of a large-diameter spiral fire extinguisher according to claim 1, characterized in that, The safety pull ring (6) is provided with a limit pin (60), and a groove (61) is provided on one side wall of the limit pin (60). The valve stem (4) is placed in the groove (61). The limit pin (60) is placed between the pressure cap (5) and the upper end face of the valve body (2). A pull ring (62) is provided on the other side wall of the limit pin (60).

5. The structure of a large-diameter spiral fire extinguisher according to claim 1, characterized in that, The upper end of the valve stem (4) is provided with an upper screw (41), the top surface of the pressure cap (5) is arc-shaped, and the lower end of the pressure cap (5) is provided with a connecting screw tube (42), which is connected to the upper screw (41).

6. The structure of a large-diameter spiral 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 engaged in the middle of the central hole (20), a protrusion block (43) is provided in the middle of the valve stem (4), a sealing ring (44) is provided below the protrusion block (43), and the protrusion block (43) is placed between the stop block (26) and the locking block (27).

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

8. The structure of a large-diameter spiral fire extinguisher according to claim 1, characterized in that, The lower side wall of the central hole (20) is provided with an exhaust hole (28), and 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 opening of the exhaust pipe (29) is close to the dry powder inside the bottle body (1).

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

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