High-strength flame-retardant paper honeycomb core composite wallboard structure and manufacturing method
By designing flame retardant mechanism and filling reinforcement mechanism in paper honeycomb core composite wall panels, the flame retardant effect and strength of traditional paper honeycomb core composite wall panels are improved, and the flame retardant effect and strength of traditional paper honeycomb core composite wall panels are solved. Problem, better fire resistance and usage effects are achieved.
Patent Information
- Application Number
- CN202411368284.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2024-12-06
AI Technical Summary
The traditional paper honeycomb core composite wall panel structure is made of paper materials, resulting in low flame retardant effect and strength, and poor use effect.
A high-strength flame-retardant paper honeycomb core composite wall panel structure is designed, including the outer plate body, the inner interlayer piece and the filling reinforcement mechanism. Holes are installed inside the inner interlayer piece to form a hexagonal honeycomb structure, the flame-retardant mechanism and the filling reinforcement mechanism are used. Used to improve flame retardant effect and strength. The flame retardant mechanism is distributed inside the inner interlayer through a fixing frame, a connecting frame, a barrier plate and a check valve. The filling reinforcement mechanism is arranged inside the outer plate through a discharge pipe and a support. Liquid hardener can be injected into the inner interlayer to improve the whole. strength.
A better flame retardant effect and strength improvement is achieved. The flame retardant mechanism sprays flame retardant when the fire occurs to limit the fire. The filling and strengthening mechanism improves the overall strength and enhances the fire resistance and use effect of paper honeycomb core composite wall panels.
Smart Images
Figure CN119083620A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of paper honeycomb core composite wallboard structures, in particular to a high-strength flame-retardant paper honeycomb core composite wallboard structure and a manufacturing method thereof. Background Art
[0002] Honeycomb wallboard is made of flame-retardant paper honeycomb core and inorganic thin plate as surface material. It can be made of different surface materials through adhesives according to customer needs or usage. For example, inorganic materials: cement board, glass magnesium board, calcium silicate board, gypsum board are used to compound flame-retardant paper honeycomb core to form paper honeycomb wallboard lightweight wallboard. It can be widely used in the internal partition walls of various buildings. Paper honeycomb lightweight wallboard is a new type of material with the following characteristics: in terms of production raw materials, the core part of paper honeycomb lightweight wallboard is paper honeycomb, and the base material pulp can mostly be made of secondary fibers such as recycled waste materials. The paper honeycomb core is prepared through environmentally friendly flame retardant treatment. The material is flexible and convenient, making this kind of wallboard non-toxic, pollution-free, non-radioactive, and the wallboard can be recycled and reused, and naturally degraded, and the production raw materials are economical and environmentally friendly. In the selection of production raw materials, the quality of paper honeycomb is the key to the entire wall. The pulp of the base material can be selected for secondary recycling of waste materials, and it can be processed to complete the production of paper core. In the whole process, the collection of raw materials is very convenient. At the same time, the material of this wall panel has no toxicity and will not pollute the environment. The material can be recycled and reused, which effectively improves the utilization rate of the material. For materials that cannot be used, they can also be effectively treated through natural degradation, so the use of raw materials in production also reflects very good economy.
[0003] The traditional paper honeycomb core composite wall panel structure uses paper material to manufacture the honeycomb core, resulting in low overall flame retardancy and strength of the paper honeycomb core composite wall panel structure, and poor use effect. Summary of the invention
[0004] The object of the present invention is to provide a high-strength flame-retardant paper honeycomb core composite wallboard structure and a manufacturing method to solve the problems raised in the above background technology.
[0005] To achieve the above object, the present invention provides the following technical solutions: A high-strength flame-retardant paper honeycomb core composite wallboard structure, comprising: An outer plate body, wherein the outer plate body is provided with two layers; The inner sandwich is installed between two outer panels, and a plurality of holes are opened inside the inner sandwich to form a hexagonal honeycomb structure. A flame retardant mechanism, wherein the flame retardant mechanism is installed inside the inner sandwich member, and a plurality of the flame retardant mechanisms are provided; A filling and reinforcing mechanism is arranged inside the outer plate body, and a liquid hardener can be filled into the inner sandwich member through the filling and reinforcing mechanism.
[0006] Optionally, the flame retardant mechanism includes a fixed frame, a connecting frame, a blocking plate and a one-way valve, one end of the connecting frame is fixedly mounted on the side wall of the fixed frame, the other end of the connecting frame is fixedly mounted on the inner wall of the inner sandwich member, the fixed frame and the connecting frame are provided with a connected storage cavity, the connecting frame side wall is provided with a discharge hole, the discharge hole is connected to the storage cavity, the inner wall of the discharge hole is provided with a clamping groove, the blocking plate is clamped in the clamping groove, the one-way valve is fixedly mounted on the side wall of the fixed frame, and one end of the one-way valve is connected to the storage cavity.
[0007] Optionally, the fixing frame is a spherical structure.
[0008] Optionally, the fixing frame is fixedly installed inside the inner sandwich member via a connecting frame.
[0009] Optionally, a plurality of the flame retardant mechanisms are evenly distributed inside the inner sandwich component.
[0010] Optionally, the filling reinforcement mechanism includes a discharge pipe and a plurality of support members, a connecting groove is opened inside the outer plate body, an injection hole penetrating the outer plate body is opened at one end of the connecting groove, a connecting hole is opened inside the connecting groove, the discharge pipe is fixedly installed at one end of the connecting hole, the support member is fixedly installed on the inner wall of the connecting groove, and a plurality of the support members are evenly distributed inside the connecting groove.
[0011] Optionally, a positioning groove matching the inner sandwich member is opened on one side of the outer plate body, and a plurality of positioning members are fixedly installed on one side of the outer plate body, and the plurality of positioning members are evenly distributed on both sides of the positioning groove.
[0012] Optionally, a first flame retardant layer is fixedly mounted on one side of the outer plate body, and the inner sandwich component is composed of a second flame retardant layer, a base layer and a support layer from the outside to the inside.
[0013] A method for manufacturing a high-strength flame-retardant paper honeycomb core composite wallboard structure, specifically comprising the following steps: S1: First, the first flame retardant layer is adhered and fixed to one side of the outer plate body by glue; S2: A positioning groove having the same shape as the inner sandwich structure is opened on the other side of the outer plate, and then the positioning piece is glued and fixed to the other side of the outer plate by glue; S3: Open a connecting groove, a connecting hole and an injection hole inside the outer plate, adhere the support member to the inner wall of the connecting groove, and then adhere the discharge pipe to one end of the connecting hole, so that one end of the discharge pipe is located at the top of the outer plate; S4: applying glue to one end of the connecting frame, and then adhering the end of the connecting frame coated with glue to the inner wall of the hole inside the inner sandwich component, so as to fix the fixing frame in the inner sandwich component; S5: During subsequent assembly, glue is applied to the positioning groove, the inner sandwich component is inserted into the positioning groove, and another outer panel is placed on top of the inner sandwich component. The inner sandwich component is positioned and supported by the positioning component and the positioning groove, so that the two outer panels and the inner sandwich component are combined to form a paper honeycomb core composite wall panel.
[0014] Optionally, the flame retardant mechanism is manufactured by specifically comprising the following steps: S1: hollowing out the interior of the fixing frame and the connecting frame to form a storage cavity, opening a discharge hole and a clamping groove connected to the storage cavity on the side wall of the connecting frame, and then clamping the blocking plate into the clamping groove to seal the discharge hole; S2: Then, the connecting frame is fixedly welded to the side wall of the fixing frame, so that the inside of the connecting frame is connected with the inside of the fixing frame; S3: Install a one-way valve inside the fixing frame, and then inject the flame retardant into the fixing frame through the one-way valve. If the pressure inside the fixing frame is insufficient, high-pressure gas can be injected into the fixing frame through the one-way valve.
[0015] The present invention has at least the following beneficial effects: (1) This scheme sets a flame retardant mechanism. When the inside of the paper honeycomb core composite wall panel is on fire, the temperature inside the paper honeycomb core composite wall panel rises. When the temperature of the barrier plate reaches 160-170°C, the barrier plate will melt. At this time, the flame retardant filled in the storage cavity will be sprayed out through the discharge hole, which has a certain flame retardant effect, thereby limiting the fire and achieving a good flame retardant effect. (2) The filling and strengthening mechanism of this scheme is to provide an injection hole so that the liquid hardener can be injected into the connecting groove, and to provide a discharge pipe so that the liquid hardener inside the connecting groove can flow into the internal holes of the inner sandwich member through the connecting hole and the discharge pipe, thereby filling the inside of the inner sandwich member, thereby making the overall strength of the paper honeycomb core composite wallboard higher; (3) This solution can increase the flame retardant effect of the outer panel by providing the first flame retardant layer, and can increase the flame retardant effect of the inner sandwich by providing the second flame retardant layer, thereby making the overall flame retardant effect of the paper honeycomb core composite wallboard better; (4) This solution can make the installation of the inner sandwich component more convenient by providing a positioning groove, and can provide positioning support for the installed inner sandwich component by providing a positioning component to prevent the inner sandwich component from tilting. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the flame retardant mechanism of the present invention; Figure 3 This is a schematic diagram of the installation structure of the inner sandwich member of the present invention; Figure 4 This is a schematic diagram of the outer plate structure of the present invention; Figure 5 This is a schematic diagram of the structure of the inner sandwich member of the present invention; Figure 6 This is a schematic diagram of the structure of the inner sandwich component of the present invention; Figure 7 It is a structural schematic diagram of one side of the outer plate body of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the outer plate body of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional structure of the connecting groove of the present invention; Fig.10 It is a schematic cross-sectional structure diagram of the flame retardant mechanism of the present invention.
[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Outer plate; 101. First flame retardant layer; 102. Positioning piece; 103. Positioning groove; 2. Inner sandwich piece; 201. Second flame retardant layer; 202. Base layer; 203. Support layer; 3. Fixing frame; 301. Connecting frame; 302. Discharge hole; 303. Snap-in groove; 304. Blocking plate; 305. Storage cavity; 306. One-way valve; 4. Discharge pipe; 401. Injection hole; 402. Connecting groove; 403. Supporting piece; 404. Connecting hole. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0019] See also Figure 1-Figure 10 The present invention provides a high-strength flame-retardant paper honeycomb core composite wallboard structure, comprising: The outer plate body 1 is provided with two layers; The inner sandwich member 2 is installed between the two outer panels 1. A plurality of holes are provided inside the inner sandwich member 2 so that the inner sandwich member 2 forms a hexagonal honeycomb structure. A flame retardant mechanism, which is installed inside the inner sandwich member 2, and a plurality of flame retardant mechanisms are provided; The filling and reinforcing mechanism is arranged inside the outer plate body 1 , and liquid hardener can be filled into the inner sandwich member 2 through the filling and reinforcing mechanism.
[0020] In some embodiments, see Figure 2 , Fig.10 The flame retardant mechanism includes a fixing frame 3, a connecting frame 301, a blocking plate 304 and a one-way valve 306. One end of the connecting frame 301 is fixedly mounted on the side wall of the fixing frame 3, and the other end of the connecting frame 301 is fixedly mounted on the inner wall of the inner sandwich member 2. A storage cavity 305 connected to the fixing frame 3 and the connecting frame 301 is provided inside. A discharge hole 302 is provided on the side wall of the connecting frame 301. The discharge hole 302 is connected to the storage cavity 305. A clamping groove 303 is provided on the inner wall of the discharge hole 302. The blocking plate 304 is clamped inside the clamping groove 303. The one-way valve 306 is fixedly mounted on the side wall of the fixing frame 3. One end of the one-way valve 306 is connected to the storage cavity 305. The fixing frame 3 is a spherical structure. The fixing frame 3 is connected to The frame 301 is fixedly installed inside the inner sandwich component 2, and several flame retardant mechanisms are evenly distributed inside the inner sandwich component 2. The material of the blocking plate 304 is polypropylene, and the flame retardant filled in the storage cavity 305 can be a phosphorus-based liquid flame retardant or a silicone liquid flame retardant. By setting the material of the blocking plate 304 to polypropylene, when the inside of the paper honeycomb core composite wall panel is on fire, the temperature inside the paper honeycomb core composite wall panel rises, and when the temperature of the blocking plate 304 reaches 160-170°C, the blocking plate 304 will start to melt. At this time, the flame retardant filled in the storage cavity 305 will be sprayed out through the discharge hole 302, which has a certain flame retardant effect, thereby limiting the fire and achieving a better flame retardant effect.
[0021] In some embodiments, see Figure 4 , Figure 7 , Figure 8 , Fig. 9The filling and reinforcing mechanism includes a discharge pipe 4 and a plurality of supporting members 403. A connecting groove 402 is provided inside the outer plate body 1. An injection hole 401 penetrating the outer plate body 1 is provided at one end of the connecting groove 402. A connecting hole 404 is provided inside the connecting groove 402. The discharge pipe 4 is fixedly installed at one end of the connecting hole 404. The supporting member 403 is fixedly installed on the inner wall of the connecting groove 402. A plurality of supporting members 403 are evenly distributed inside the connecting groove 402. By setting the injection hole 401, the liquid hardener can be injected into the connecting groove 402. By setting the discharge pipe 4, the liquid hardener inside the connecting groove 402 can flow into the internal holes of the inner sandwich member 2 through the connecting hole 404 and the discharge pipe 4 to fill the inside of the inner sandwich member 2, so that the overall strength of the paper honeycomb core composite wallboard can be higher. The filling material or whether to fill can be selected according to needs. The filling material can be a liquid hardener or a liquid expansion agent.
[0022] In some embodiments, see Figure 4 , Figure 5 A positioning groove 103 matching the inner sandwich component 2 is opened on one side of the outer plate body 1, and a plurality of positioning members 102 are fixedly installed on one side of the outer plate body 1. The plurality of positioning members 102 are evenly distributed on both sides of the positioning groove 103. By setting the positioning groove 103, the installation of the inner sandwich component 2 can be more convenient. By setting the positioning member 102, the installed inner sandwich component 2 can be positioned and supported to prevent the inner sandwich component 2 from tilting.
[0023] For further information, please refer again to Figure 1 , Figure 6 A first flame retardant layer 101 is fixedly installed on one side of the outer plate body 1, and the inner sandwich member 2 is composed of a second flame retardant layer 201, a base layer 202 and a support layer 203 from the outside to the inside. The first flame retardant layer 101 is made of rock wool fiber, the second flame retardant layer 201 is made of polyimide coating spraying, the base layer 202 is a traditional paper manufacturing material, and the support layer 203 is a paper manufacturing material soaked in a resin solution and then dried. A resin coating is formed on the outside of the paper material, which can make the support effect better and the strength higher.
[0024] A method for manufacturing a high-strength flame-retardant paper honeycomb core composite wallboard, specifically comprising the following steps: S1: First, the first flame retardant layer 101 is adhered and fixed to one side of the outer plate body 1 by glue; S2: A positioning groove 103 having the same structural shape as the inner sandwich member 2 is opened on the other side of the outer plate body 1, and then the positioning member 102 is glued and fixed to the other side of the outer plate body 1 by glue; S3: A connecting groove 402, a connecting hole 404 and an injection hole 401 are opened inside the outer plate body 1, a support member 403 is adhered to the inner wall of the connecting groove 402, and a discharge pipe 4 is adhered to one end of the connecting hole 404, so that one end of the discharge pipe 4 is located at the top of the outer plate body 1; S4: Apply glue to one end of the connecting frame 301, and then adhere the end of the connecting frame 301 coated with glue to the inner wall of the hole inside the inner sandwich member 2, so as to fix the fixing frame 3 in the inner sandwich member 2; S5: During subsequent assembly, glue is applied to the positioning groove 103, the inner sandwich component 2 is inserted into the positioning groove 103, and another outer panel 1 is placed on top of the inner sandwich component 2. The inner sandwich component 2 is positioned and supported by the positioning component 102 and the positioning groove 103, so that the two outer panels 1 and the inner sandwich component 2 are combined to form a paper honeycomb core composite wall panel.
[0025] Furthermore, the flame retardant mechanism is manufactured by specifically comprising the following steps: S1: hollowing out the interior of the fixing frame 3 and the interior of the connecting frame 301 to form a storage cavity 305, opening a discharge hole 302 and a clamping groove 303 in the side wall of the connecting frame 301 that are connected to the storage cavity 305, and then clamping the blocking plate 304 into the clamping groove 303 to seal the discharge hole 302; S2: Then, the connecting frame 301 is fixedly welded to the side wall of the fixing frame 3, so that the interior of the connecting frame 301 is connected with the interior of the fixing frame 3; S3; a one-way valve 306 is installed inside the fixing frame 3, and then a flame retardant is injected into the fixing frame 3 through the one-way valve 306. If the internal pressure of the fixing frame 3 is insufficient, high-pressure gas can be injected into the fixing frame 3 through the one-way valve 306.
[0026] The working process and principle of the present invention are as follows: when a fire occurs inside a paper honeycomb core composite wall panel, the internal temperature of the paper honeycomb core composite wall panel rises, and when the temperature of the blocking plate 304 reaches 160-170°C, the blocking plate 304 will melt, and at this time, the flame retardant filled in the storage cavity 305 will be sprayed out through the discharge hole 302, which has a certain flame retardant effect, thereby limiting the fire and having a better flame retardant effect. By setting the injection hole 401, the liquid hardener can be injected into the connecting groove 402, and by setting the discharge pipe 4, the liquid hardener in the connecting groove 402 can flow into the internal holes of the inner sandwich component 2 through the connecting hole 404 and the discharge pipe 4, and fill the interior of the inner sandwich component 2, thereby making the overall strength of the paper honeycomb core composite wall panel higher.
[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A high-strength flame-retardant paper honeycomb core composite wallboard structure, characterized in that: include: An outer plate body (1), wherein the outer plate body (1) is provided with two layers; An inner sandwich member (2), the inner sandwich member (2) being installed between two layers of outer plate bodies (1), and a plurality of holes being provided inside the inner sandwich member (2), so that the inner sandwich member (2) forms a hexagonal honeycomb structure A flame retardant mechanism, the flame retardant mechanism being installed inside the inner sandwich component (2), and a plurality of the flame retardant mechanisms are provided; A filling and reinforcing mechanism, wherein the filling and reinforcing mechanism is arranged inside the outer plate body (1), and material can be filled into the inner sandwich component (2) through the filling and reinforcing mechanism.
2. A high-strength flame-retardant paper honeycomb core composite wallboard structure according to claim 1, characterized in that: The flame retardant mechanism comprises a fixing frame (3), a connecting frame (301), a blocking plate (304) and a one-way valve (306); one end of the connecting frame (301) is fixedly mounted on a side wall of the fixing frame (3); the other end of the connecting frame (301) is fixedly mounted on an inner wall of the inner sandwich member (2); a storage cavity (305) communicating with the fixing frame (3) and the connecting frame (301) is provided inside; a discharge hole (302) is provided on the side wall of the connecting frame (301); the discharge hole (302) is communicated with the storage cavity (305); a clamping groove (303) is provided on the inner wall of the discharge hole (302); the blocking plate (304) is clamped inside the clamping groove (303); the one-way valve (306) is fixedly mounted on the side wall of the fixing frame (3); one end of the one-way valve (306) is communicated with the storage cavity (305).
3. A high-strength flame-retardant paper honeycomb core composite wallboard structure according to claim 2, characterized in that: The fixing frame (3) is a spherical structure.
4. A high-strength flame-retardant paper honeycomb core composite wallboard structure according to claim 2, characterized in that: The fixing frame (3) is fixedly installed inside the inner sandwich component (2) via a connecting frame (301).
5. The high-strength flame-retardant paper honeycomb core composite wallboard structure according to claim 1, characterized in that: A plurality of the flame retardant mechanisms are evenly distributed inside the inner sandwich component (2).
6. The high-strength flame-retardant paper honeycomb core composite wallboard structure according to claim 1, characterized in that: The filling reinforcement mechanism comprises a discharge pipe (4) and a plurality of support members (403); a connecting groove (402) is provided inside the outer plate body (1); an injection hole (401) penetrating the outer plate body (1) is provided at one end of the connecting groove (402); a connecting hole (404) is provided inside the connecting groove (402); the discharge pipe (4) is fixedly mounted at one end of the connecting hole (404); the support member (403) is fixedly mounted on the inner wall of the connecting groove (402); and a plurality of the support members (403) are evenly distributed inside the connecting groove (402).
7. The high-strength flame-retardant paper honeycomb core composite wallboard structure according to claim 1, characterized in that: A positioning groove (103) matching the inner sandwich member (2) is provided on one side of the outer plate body (1), and a plurality of positioning members (102) are fixedly mounted on one side of the outer plate body (1), and the plurality of positioning members (102) are evenly distributed on both sides of the positioning groove (103).
8. The high-strength flame-retardant paper honeycomb core composite wallboard structure according to claim 1, characterized in that: A first flame retardant layer (101) is fixedly mounted on one side of the outer plate body (1), and the inner sandwich component (2) is composed of a second flame retardant layer (201), a base layer (202), and a support layer (203) from the outside to the inside.
9. A method for manufacturing a high-strength flame-retardant paper honeycomb core composite wallboard structure according to any one of claims 1 to 8, characterized in that: The specific steps include: S1: firstly, the first flame retardant layer (101) is adhered and fixed to one side of the outer plate body (1) by glue; S2: A positioning groove (103) having the same structural shape as the inner sandwich member (2) is opened on the other side of the outer plate (1), and then the positioning member (102) is glued and fixed to the other side of the outer plate (1) by glue; S3: A connecting groove (402), a connecting hole (404) and an injection hole (401) are opened inside the outer plate body (1), a support member (403) is adhered to the inner wall of the connecting groove (402), and a discharge pipe (4) is adhered to one end of the connecting hole (404), so that one end of the discharge pipe (4) is located at the top of the outer plate body (1); S4: applying glue to one end of the connecting frame (301), and then adhering the end of the connecting frame (301) coated with glue to the inner wall of the hole inside the inner sandwich component (2), thereby fixing the fixing frame (3) in the inner sandwich component (2); S5: During subsequent assembly, glue is applied to the positioning groove (103), the inner sandwich component (2) is inserted into the positioning groove (103), and another outer plate body (1) is placed on top of the inner sandwich component (2). The inner sandwich component (2) is positioned and supported by the positioning piece (102) and the positioning groove (103), so that the two outer plate bodies (1) and the inner sandwich component (2) are combined to form a paper honeycomb core composite wall panel.
10. The method for manufacturing a high-strength flame-retardant paper honeycomb core composite wallboard structure according to claim 9, characterized in that: The flame retardant mechanism is manufactured by specifically comprising the following steps: S1: hollowing out the interior of the fixing frame (3) and the interior of the connecting frame (301) to form a storage cavity (305), opening a discharge hole (302) and a clamping groove (303) in communication with the storage cavity (305) on the side wall of the connecting frame (301), and then clamping a blocking plate (304) into the clamping groove (303) to seal the discharge hole (302); S2: Then, the connecting frame (301) is fixedly welded to the side wall of the fixing frame (3), so that the interior of the connecting frame (301) is connected to the interior of the fixing frame (3); S3; a one-way valve (306) is installed inside the fixing frame (3), and then a flame retardant is injected into the fixing frame (3) through the one-way valve (306). If the pressure inside the fixing frame (3) is insufficient, high-pressure gas can be injected into the fixing frame (3) through the one-way valve (306).