Regenerated paper grab handle type throwing fire extinguishing bomb
By designing a recycled paper handle-type fire extinguishing bomb, the problems of complex filling of the central tube and falling fuse were solved, achieving uniform dispersion of dry powder extinguishing agent and stable connection of fuse, thus improving the reliability and processing efficiency of the fire extinguishing bomb.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-04-07
AI Technical Summary
The existing fire extinguishing bombs have complex and error-prone filling processes in the central tube during production and processing. The dry powder extinguishing agent is not evenly dispersed, and the fuse is easy to fall off, resulting in dud bombs.
It adopts a recycled paper handle structure, with an internal explosion unit and lead wire fixing device, including an upper inner tube, a lower inner tube, a pull cap and a handle. The lead wire is fixed by a foam material filling layer, which simplifies the filling process and ensures a stable connection of the lead wire.
It achieves uniform dispersion of dry powder extinguishing agent and stable connection of fuse, improves the reliability and processing efficiency of extinguishing bombs, and avoids the occurrence of duds.
Smart Images
Figure CN224085883U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fire extinguishing bomb technology, specifically a recycled paper handle-type throwable fire extinguishing bomb. Background Technology
[0002] With the development of fire extinguishing technology, the emergence of fire extinguishing grenades has effectively compensated for the shortcomings of handheld fire extinguishers, such as short working distance and inherent danger. Hand-thrown ultrafine dry powder fire extinguishing grenades come in various shapes, some resembling hand grenades, others like large cans; some have pull rings and safety caps (pull-activated), while others only require the removal of the superconducting thermal wire (ignition-activated). The outer shell is made of paper. In case of fire, the firefighter holds the grenades, tears open the safety paper seal, hooks the pull ring, and throws it forcefully into the fire. The grenades explode at the location of the fire after a seven-second delay (pull-activated). Alternatively, the firefighter holds the grenades, tears open the safety paper seal, removes the superconducting thermal wire, and throws it directly into the fire. The superconducting thermal wire ignites rapidly upon heating in the fire and explodes, releasing ultrafine dry powder extinguishing agent, which can effectively control sudden initial fires in a short time.
[0003] For example, patent document with publication number 2018105196628 discloses a novel handle-type hand-thrown ring-activated fire extinguishing bullet. The technical solution described in this utility model has the following problems when used:
[0004] The process of filling the central tube with pyrotechnic agents during production and processing is complex and difficult. Furthermore, the filling position may be subject to errors due to manual operation, which may result in the dry powder extinguishing agent not spreading as expected when the entire fire extinguishing bomb explodes.
[0005] The fuse inside the center tube cannot be secured, and the installed fuse is prone to falling out of the firing cap, causing the entire fire extinguishing bomb to fail to ignite and resulting in a dud. Utility Model Content
[0006] To address the above problems, this utility model provides a recycled paper handle-type throwing fire extinguishing grenade, which solves the problems of difficulty in filling the explosive charge and the fuse easily falling out of the cap.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] A recycled paper-based handle-type throwable fire extinguishing grenade includes an outer shell with a handle inserted into it; the outer shell is filled with a dry powder extinguishing agent, and a detonation unit is provided in the middle of the dry powder extinguishing agent, the detonation unit being connected to a detonating cap via a lead wire; the detonation unit includes an upper inner cylinder and a lower inner cylinder; the upper inner cylinder and the lower inner cylinder are fastened together, forming a cavity between the fastened upper and lower inner cylinders, the cavity being used to hold the detonating explosive, the lead wire passing through the shell of the upper or lower inner cylinder and connecting to the detonating explosive; a third filling layer is provided at the bottom of the outer shell.
[0009] As a further improvement to the above technical solution, the handle is inserted into a through hole provided in the upper part of the outer shell, a second filling layer is provided between the side wall of the through hole and the side wall of the upper part of the outer shell, and a first filling layer is provided inside the handle; a top sealing layer and a bottom sealing layer are respectively provided in the upper and lower parts of the handle.
[0010] As a further improvement to the above technical solution, the pull cap is located at the upper part of the handle, one end of the lead wire is connected to the flame inlet of the pull cap, and the other end passes through the bottom sealing layer and is connected to the detonation unit.
[0011] As a further improvement to the above technical solution, the ignition cap includes a fixed shell, a copper cap inside the fixed shell, and an igniter inside the copper cap. Through holes are provided in the upper part of the fixed shell, the upper part of the copper cap, and the middle part of the igniter. It also includes a tension spring, one end of which is connected to a pull ring, and the other end passes through the through holes in the upper part of the fixed shell, the upper part of the copper cap, and the middle part of the igniter, continuously bending below the igniter to form a friction part. A sealing layer is located below the friction part, and a sealing layer is provided at the through holes in the upper part of the fixed shell.
[0012] As a further improvement to the above technical solution, a first sealing layer is provided at the connection between the firing cap and the lead wire; a protective layer is provided on the outside of the lead wire.
[0013] As a further improvement to the above technical solution, one end of the upper inner cylinder is sealed while the other end is open, and one end of the lower inner cylinder is sealed while the other end is open; the outer diameter of the lower inner cylinder matches the inner diameter of the upper inner cylinder; the length of the lower inner cylinder is greater than the length of the upper inner cylinder.
[0014] As a further improvement to the above technical solution, the upper inner cylinder is provided with a through hole.
[0015] As a further improvement to the above technical solution, the first filling layer, the second filling layer and the third filling layer are all made of foam material.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: by filling the handle with foam, the fuse and the trigger cap can be effectively fixed, preventing the fuse from falling out of the trigger cap; the detonation unit is used instead of the traditional central tube charge, which facilitates the filling of the detonating charge, and the installation position of the detonation unit can be adjusted to place it in the optimal detonation position. In addition, the detonation unit is simple to manufacture and has a fast processing efficiency. Attached Figure Description
[0017] Figure 1 This is a cross-sectional structural diagram of the present invention.
[0018] Figure 2This is a cross-sectional view of the fire-starting cap of this utility model.
[0019] In the diagram: 1. Pull ring; 2. Top sealing layer; 3. Pull cap; 4. Handle; 5. First sealing layer; 6. Lead wire; 7. Lead protection layer; 8. First filling layer; 9. Through hole; 10. Outer shell; 11. Second filling layer; 12. Bottom sealing layer; 13. Lower inner cylinder; 14. Upper inner cylinder; 15. Explosive; 16. Dry powder extinguishing agent; 17. Third filling layer. Detailed Implementation
[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the embodiments. The description in this part is only exemplary and explanatory, and should not be used to limit the protection scope of this utility model in any way. Example
[0021] like Figure 1 As shown, a recycled paper handle type 4 throwing fire extinguishing grenade includes an outer shell 10 with a handle 4 inserted into it; the outer shell 10 is filled with dry powder fire extinguishing agent 16, and a detonation unit is provided in the middle of the dry powder fire extinguishing agent 16. The detonation unit is connected to the detonating cap 3 through a fuse 6; the detonation unit includes an upper inner cylinder 14 and a lower inner cylinder 13; the upper inner cylinder 14 and the lower inner cylinder 13 are fastened together, forming a cavity between the fastened upper inner cylinder 14 and the lower inner cylinder 13, which is used to place the detonating explosive 15. The fuse 6 passes through the shell of the upper inner cylinder 14 or the lower inner cylinder 13 and is connected to the detonating explosive 15; a third filling layer 17 is provided at the bottom of the outer shell 10.
[0022] As a preferred embodiment of the above, the handle 4 is inserted into the through hole 9 provided in the upper part of the outer shell 10, a second filling layer 11 is provided between the side wall of the through hole 9 and the upper side wall of the outer shell 10, and a first filling layer 8 is provided inside the handle 4; a top sealing layer 2 and a bottom sealing layer 12 are respectively provided in the upper and lower parts of the handle 4.
[0023] As a preferred embodiment of the above, the trigger cap 3 is located on the upper part of the handle 4, one end of the lead wire 6 is connected to the flame inlet of the trigger cap 3, and the other end passes through the bottom sealing layer 12 and is connected to the detonation unit.
[0024] like Figure 1As shown, specifically, the outer shell 10 is a cylindrical shell made of rolled paper. A second filling layer 11 is formed on the upper part of the outer shell 10 by upper and lower circular paper pieces. The height of the second filling layer 11 is determined by the height of the positioning ring. The inner diameter of the positioning ring is the same as the outer diameter of the handle 4. The through hole 9 in the middle of the positioning ring and the through hole 9 in the middle of the upper and lower circular paper pieces form a through hole 9 for fixing the handle 4. Foam is filled in the cavity formed by the positioning ring, the outer shell 10, and the upper and lower circular paper pieces, so that the entire outer shell 10, the positioning ring, and the upper and lower circular paper pieces are formed into a whole.
[0025] The handle 4 is a cylindrical shell made of rolled paper. The top sealing layer 2 and bottom sealing layer 12 inside the handle 4 are both made of paper, the diameter of which matches the inner diameter of the handle 4. The cavity formed by the handle 4, the top sealing layer 2, and the bottom sealing layer 12 is the first filling cavity, which is filled with expanding foam. The trigger cap 3 is located on the upper part of the handle 4, with the upper end of the tension spring passing through the top sealing layer 2 and connected to the tension spring. The upper end of the lead wire 6 is located at the trigger cap. Inside the cap 3, the lower end passes through the bottom sealing layer 12 and connects to the detonation unit located inside the outer casing 10. A protective layer 7 is provided on the outside of the lead wire 6 to separate the lead wire 6 from the expanding foam. In this embodiment, the protective layer 7 is a fixing tape. The first sealing layer 5 provided at the connection between the cap 3 and the lead wire 6 is also a fixing tape. The expanding foam in the first filling layer 8 is used to fix the lead wire 6 to the cap 3 to prevent the lead wire 6 from falling out of the cap 3.
[0026] like Figure 2 As shown, in a preferred embodiment of the above, the ignition cap 3 includes a fixed shell, a copper cap inside the fixed shell, an igniter inside the copper cap, and through holes 9 in the upper part of the fixed shell, the upper part of the copper cap, and the middle part of the igniter; it also includes a tension spring, one end of which is connected to a pull ring 1, and the other end passes through the through holes 9 in the upper part of the fixed shell, the upper part of the copper cap, and the middle part of the igniter, and is continuously bent below the igniter to form a friction part; a sealing layer is located below the friction part, and a sealing layer is provided at the through holes 9 in the upper part of the fixed shell; the material of the sealing layer is paraffin wax.
[0027] Specifically, the sealing layer is an ignition powder; after the igniter is ignited at the friction part of the tension spring, the igniter will continue to ignite the sealing layer, and then ignite the fuse 6. In order to prevent the fixed shell from exploding, a venting hole can be provided on the side wall of the fixed shell. The surface of the venting hole is sealed with a sealing tape, which is made of flammable material such as tape. The venting hole can be set on the side wall of the fixed shell on the side of the friction part of the tension spring.
[0028] As a preferred embodiment of the above, a first sealing layer 5 is provided at the connection between the trigger cap 3 and the lead wire 6; a protective layer 7 is provided on the outside of the lead wire 6.
[0029] As a preferred embodiment of the above, one end of the upper inner cylinder 14 is sealed and the other end is open, and one end of the lower inner cylinder 13 is sealed and the other end is open; the outer diameter of the lower inner cylinder 13 matches the inner diameter of the upper inner cylinder 14; the length of the lower inner cylinder 13 is greater than the length of the upper inner cylinder 14.
[0030] As a preferred embodiment of the above, the upper inner cylinder 14 is provided with a through hole.
[0031] As a preferred embodiment of the above, the first filling layer 8, the second filling layer 11 and the third filling layer 17 are all made of foam material.
[0032] Specifically, the detonation unit includes an upper inner cylinder 14, a lower inner cylinder 13, and a detonating explosive 15. The combination of the upper inner cylinder 14 and the lower inner cylinder 13 is the same as that of the capsule. When loading the detonating explosive 15, the fuse 6 is first inserted through the through hole of the upper inner cylinder 14. To prevent the fuse 6 from falling off, the fuse 6 passing through the through hole can be knotted. Then, the lower inner cylinder 13 is filled with the detonating explosive 15. After filling with the detonating explosive 15, the upper inner cylinder 14 and the lower inner cylinder 13 are fastened together as a whole. To increase the tightness of the fastening, glue can be applied to the outer wall of the lower inner cylinder 13. The upper inner cylinder 14 and the lower inner cylinder 13 are made of low-strength, lightweight material, such as recycled paper, or the upper inner cylinder 14 and the lower inner cylinder 13 can be formed by hot pressing a mixture of starch and fiber. For specific details, refer to the existing fireworks molding cylinder manufacturing process.
[0033] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0034] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only used to help understand the method and core ideas of this utility model.
[0035] The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principle of this utility model, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.
Claims
1. A type of fire extinguishing grenade with a recycled paper handle (4), characterized in that, The device includes an outer shell (10) with a handle (4) inserted thereon; the outer shell (10) is filled with a dry powder extinguishing agent (16), and a detonation unit is provided in the middle of the dry powder extinguishing agent (16). The detonation unit is connected to the detonating cap (3) by a lead wire (6); the detonation unit includes an upper inner cylinder (14) and a lower inner cylinder (13); the upper inner cylinder (14) and the lower inner cylinder (13) are fastened together, forming a cavity between the upper inner cylinder (14) and the lower inner cylinder (13) after fastening. The cavity is used to place the detonating explosive (15), and the lead wire (6) passes through the shell of the upper inner cylinder (14) or the lower inner cylinder (13) and is connected to the detonating explosive (15); a third filling layer (17) is provided at the bottom of the outer shell (10).
2. The recycled paper handle (4) type fire extinguishing grenade according to claim 1, characterized in that, The handle (4) is inserted into the through hole (9) provided on the upper part of the outer shell (10). A second filling layer (11) is provided between the side wall of the through hole (9) and the upper side wall of the outer shell (10). A first filling layer (8) is provided inside the handle (4). A top sealing layer (2) and a bottom sealing layer (12) are provided on the upper and lower parts of the handle (4), respectively.
3. The recycled paper handle (4) type fire extinguishing grenade according to claim 2, characterized in that, The fire cap (3) is located on the upper part of the handle (4). One end of the lead wire (6) is connected to the fire inlet of the fire cap (3), and the other end passes through the bottom sealing layer (12) and is connected to the detonation unit.
4. A type of fire extinguishing grenade with a recycled paper handle (4) according to claim 3, characterized in that, The ignition cap (3) includes a fixed shell, a copper cap is provided inside the fixed shell, an igniter is provided inside the copper cap, and through holes (9) are provided on the upper part of the fixed shell, the upper part of the copper cap and the middle part of the igniter; it also includes a tension spring, one end of which is connected to a pull ring (1), and the other end passes through the through holes (9) on the upper part of the fixed shell, the upper part of the copper cap and the middle part of the igniter, and is continuously bent below the igniter to form a friction part; a sealing layer is located below the friction part, and a sealing layer is provided at the through hole (9) on the upper part of the fixed shell.
5. A type of fire extinguishing grenade with a recycled paper handle (4) according to claim 4, characterized in that, A first sealing layer (5) is provided at the connection between the ignition cap (3) and the lead wire (6); a protective layer (7) is provided on the outside of the lead wire (6).
6. A type of fire extinguishing grenade with a recycled paper handle (4) according to claim 1, characterized in that, The upper inner cylinder (14) is sealed at one end and open at the other end, and the lower inner cylinder (13) is sealed at one end and open at the other end; the outer diameter of the lower inner cylinder (13) matches the inner diameter of the upper inner cylinder (14); the length of the lower inner cylinder (13) is greater than the length of the upper inner cylinder (14).
7. A type of fire extinguishing grenade with a recycled paper handle (4) according to claim 6, characterized in that, The upper inner cylinder (14) is provided with a threading hole.
8. A type of fire extinguishing grenade with a recycled paper handle (4) according to claim 2, characterized in that, The first filling layer (8), the second filling layer (11) and the third filling layer (17) are all made of foam material.