Multifunctional inorganic sandwich thermal insulation fireproof wall structure
By combining a steel frame and multiple layers of materials within the wall, the problems of complex construction and limited functionality of existing walls are solved, achieving the effects of heat insulation, flame retardancy, sound insulation, and enhanced load-bearing capacity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN MEIYU ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-08-04
AI Technical Summary
Existing wall construction procedures are cumbersome, time-consuming, and expensive. They also have limited functionality, low load-bearing strength, and a lack of sound-absorbing materials, resulting in poor functionality.
The steel frame is filled with concrete filler, and insulation boards, flame-retardant fireproof boards, polyurethane fiber sound-absorbing boards and decorative panels are installed on both sides. They are connected by galvanized steel plates and angle steel, filled with high-density sound insulation cotton, and fixed with flame-retardant sealant to form a multi-layer structure.
It improves the wall's thermal insulation, flame retardancy, and sound insulation effects, enhances its load-bearing capacity, facilitates construction, and reduces construction complexity and cost.
Smart Images

Figure CN224591660U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermal insulation and flame retardant firewall technology, specifically a multifunctional inorganic sandwich thermal insulation firewall body structure. Background Technology
[0002] Walls mainly consist of load-bearing walls and non-load-bearing walls, primarily serving to enclose and divide space. In load-bearing structural buildings, the walls combine load-bearing and enclosure functions; in skeletal structural systems, the walls' role is both enclosure and space division. Walls must possess sufficient strength and stability, and have the capabilities of thermal insulation, sound insulation, fire resistance, and waterproofing. There are various types of walls, including those made of single materials and those made of composite materials. Designing a reasonable wall scheme by comprehensively considering factors such as enclosure, load-bearing capacity, energy efficiency, and aesthetics is a crucial task in building construction.
[0003] Existing wall structures involve cumbersome construction procedures, long construction periods, and high costs. They also generally have limited functionality, low load-bearing strength, and lack sound-absorbing materials, resulting in poor wall functionality. To address these issues, we propose a multifunctional inorganic sandwich-type thermal insulation fire wall structure. Utility Model Content
[0004] The purpose of this utility model is to provide a multifunctional inorganic sandwich thermal insulation fire wall structure to solve the problems mentioned in the background art, such as the cumbersome construction process, long construction period, high cost, relatively simple function, low load-bearing strength, and lack of sound-absorbing materials, resulting in poor wall functionality.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional inorganic sandwich insulated fire wall structure, comprising a wall, wherein a steel frame is provided inside the wall, and the steel frame is filled with concrete filler. Insulation boards, flame-retardant fireproof boards, polyurethane fiber sound-absorbing boards and decorative panels are arranged sequentially on both sides of the concrete filler. The steel frame includes longitudinal rods, transverse rods and connectors. The longitudinal rods and transverse rods are perpendicular to each other, and the longitudinal rods, connectors and transverse rods are all connected by snap-fit connectors. A galvanized steel plate is provided on the outer side of the insulation board. Angle steel is symmetrically arranged on both sides of the galvanized steel plate from top to bottom. The outer side of the angle steel is connected to the flame-retardant fireproof board by flame-retardant sealant. High-density sound insulation cotton, including glass fiber and sound insulation felt, is filled between adjacent angle steel. The sound insulation cotton is located between the flame-retardant fireproof board and the galvanized steel plate. The horizontal and vertical bars are both located on the inner side of the decorative panel.
[0006] Preferably, the cross-section of the angle steel is "L" shaped, and the opening of the angle steel faces downward.
[0007] Preferably, the insulation board is 100mm thick, and the galvanized steel sheet wrapped around it is 0.9mm thick.
[0008] Preferably, the thickness of the sound insulation cotton filling is equal to the side length of the angle steel.
[0009] Preferably, the flame-retardant sealant is applied to the outer surface of the adjacent angle steel.
[0010] Preferably, the polyurethane fiber sound-absorbing panel and the decorative panel are bonded together.
[0011] Preferably, the insulation board and the flame-retardant fireproof board are bonded together.
[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This multifunctional inorganic sandwich insulated fire wall structure fills the inside of a steel frame with concrete filler and sets insulation boards on both sides of the concrete filler. Galvanized steel plates are wrapped around the outside of the insulation boards, and angle steels are spaced from top to bottom on the outside of the galvanized steel plates. Flame-retardant sealant is applied to the contact surface between the angle steels and the flame-retardant fireproof board, thereby fixing the flame-retardant fireproof board to the insulation board. While providing insulation, flame retardancy and fireproofing, the high-density sound insulation cotton filled between adjacent angle steels can further increase the sound insulation and soundproofing effect of the wall.
[0013] 2. This multifunctional inorganic sandwich insulation fire wall structure, by setting longitudinal rods, transverse rods and connectors, and connecting the longitudinal rods, connectors and transverse rods with snap-fit parts, and filling the inner side with concrete, can increase the load-bearing capacity of the wall on the one hand, and facilitate the support of insulation boards, flame-retardant fireproof boards, polyurethane fiber sound-absorbing boards and decorative panels on the other hand. Attached Figure Description
[0014] Figure 1 This is a partial cross-sectional view of the structure of this utility model; Figure 2 This is a schematic diagram of the steel frame structure of this utility model; Figure 3 This is a cross-sectional schematic diagram of the present invention.
[0015] In the diagram: 1. Wall; 11. Concrete filler; 12. Insulation board; 13. Galvanized steel sheet; 14. Sound insulation cotton; 15. Angle steel; 16. Flame-retardant fireproof board; 17. Flame-retardant sealant; 18. Polyurethane fiber sound-absorbing board; 19. Decorative panel; 2. Steel frame; 21. Longitudinal bar; 22. Transverse bar; 23. Connector; 24. Clip-on connector. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Example: Please refer to Figure 1-3 This utility model provides a technical solution: a multifunctional inorganic sandwich insulated fire wall structure, including a wall 1, with a steel frame 2 installed inside the wall 1. The steel frame 2 is used to support the shape and fix the building structure. Specifically, the steel frame 2 in this solution includes longitudinal rods 21, transverse rods 22, and connectors 23. The longitudinal rods 21 and transverse rods 22 are perpendicular to each other, and the longitudinal rods 21, connectors 23, and transverse rods 22 are all connected by snap-fit connectors 24. The longitudinal rods 21, transverse rods 22, and connectors 23 are all steel bars of different lengths. The steel frame 2 is filled with concrete filler 11. On both sides of the concrete filler 11, insulation boards 12, flame-retardant fireproof boards 16, polyurethane fiber sound-absorbing boards 18, and decorative panels 19 are arranged in sequence. The polyurethane fiber sound-absorbing boards 18 and decorative panels 19 are pasted together. The insulation boards 12 and flame-retardant fireproof boards 16 are pasted together. Please see Figure 1 and Figure 3 The insulation board 12 has a galvanized steel plate 13 on its outer side. The insulation board 12 is 100mm thick, and the galvanized steel plate 13 wrapped around it is 0.9mm thick. Angle steel 15s, made of aluminum alloy, are symmetrically arranged at intervals from top to bottom on both sides of the galvanized steel plate 13. High-density sound-absorbing cotton 14 is filled between adjacent angle steel 15s, with a filling thickness equal to the side length of the angle steel 15. The sound-absorbing cotton 14 is located between the flame-retardant fireproof board 16 and the galvanized steel plate 13. Horizontal bars 22 and longitudinal bars 21 are both located inside the decorative panel 19.
[0018] By wrapping the insulation board 12 with a galvanized steel plate 13, the insulation board 12 can be protected, and the connection of other components can be facilitated. The angle steel 15 has an "L" shaped cross-section, with the opening facing downwards. The angle steel 15 has a specification of 60x5, and its even placement on the galvanized steel plate 13 allows for spacing between the galvanized steel plate 13 and other components, facilitating the filling of sound insulation cotton 14. The high-density sound insulation cotton 14 is usually produced using a centrifugal blowing glass wool process, which has good sound absorption performance for mid-to-high frequencies. Its sound absorption performance is affected by factors such as thickness, density, and airflow resistance. It mainly consists of fine glass fibers and sound insulation felt filling the interior. These fibers have a porous structure, which can effectively absorb sound waves and reduce the propagation of sound. A 2mm thick sound insulation felt is set on the outer layer of glass fibers, and high-density sound insulation cotton 14 is set on top, which can absorb sound waves and reduce the propagation of sound, further improving the sound insulation effect of the wall. At the same time, the glass fibers filling also have the advantages of flame retardancy, fire resistance and high temperature resistance.
[0019] Furthermore, the angle steel 15 is connected to the flame-retardant fireproof board 16 on the outside by flame-retardant sealant 17. The flame-retardant sealant 17 is a silicone sealant, which has the advantages of weather resistance, high temperature resistance, and good adhesion, as well as excellent flame-retardant properties.
[0020] Furthermore, flame-retardant sealant 17 is applied to the outer surface of adjacent angle steel 15. That is, flame-retardant sealant 17 is applied to the contact surface between angle steel 15 and flame-retardant fireproof board 16. The flame-retardant fireproof board 16 is composed of two layers of wood fiberboard and one layer of flame-retardant fireproof material. The flame-retardant fireproof material generally uses compounds such as ammonium phosphate, aluminum magnesium phosphate, and chlorinated rubber. These compounds have excellent flame-retardant and fireproof properties and can effectively prevent combustion and its spread. The surface material of the flame-retardant fireproof board 16 is a mixture of polyvinyl chloride and UV-cured coating. This mixture provides unique properties such as enhanced wear resistance, good adhesion, and excellent surface smoothness. Using it as the preparation material for the flame-retardant fireproof board 16 can further improve the adhesion between the flame-retardant fireproof board 16 and the decorative panel 19, as well as the wear-resistant, flame-retardant, and fireproof characteristics of the flame-retardant fireproof board 16.
[0021] Working principle: This multifunctional inorganic sandwich insulated fire wall structure fills the inside of the steel frame 2 with concrete filler 11 and sets insulation boards 12 on both sides of the concrete filler 11. By wrapping the outside of the insulation board 12 with galvanized steel plate 13, the insulation board 12 can be protected on the one hand, and the angle steel 15 can be fixedly connected on the other hand. Flame-retardant sealant 17 is applied to the contact surface between the angle steel 15 and the flame-retardant fireproof board 16, so that the flame-retardant fireproof board 16 can be fixed on the insulation board 12. While providing heat insulation, flame retardancy and fireproofing, the high density sound insulation cotton 14 filled between the adjacent angle steel 15 can further increase the sound insulation and sound insulation effect of the wall.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multifunctional inorganic sandwich-type thermal insulation fire wall structure, comprising a wall (1), characterized in that: The wall (1) is equipped with a steel frame (2), and the steel frame (2) is filled with concrete filler (11). On both sides of the concrete filler (11), insulation board (12), flame-retardant fireproof board (16), polyurethane fiber sound-absorbing board (18) and decorative panel (19) are arranged in sequence. The steel frame (2) includes longitudinal rods (21), transverse rods (22) and connectors (23). The longitudinal rods (21) and transverse rods (22) are perpendicular to each other, and the longitudinal rods (21), connectors (23) and transverse rods (22) are all connected by snap-fit connectors (24). The insulation board (12) is provided with a galvanized steel plate (13) on the outside. Angle steel (15) is symmetrically arranged on both sides of the galvanized steel plate (13) from top to bottom. The angle steel (15) is connected to the flame-retardant fireproof board (16) by flame-retardant sealant (17). High density sound insulation cotton (14) is filled between adjacent angle steel (15). The sound insulation cotton (14) includes glass fiber and sound insulation felt. The sound insulation cotton (14) is located between the flame-retardant fireproof board (16) and the galvanized steel plate (13). The horizontal bar (22) and the vertical bar (21) are both located inside the decorative panel (19).
2. The multifunctional inorganic sandwich insulation fire wall structure according to claim 1, characterized in that: The angle steel (15) has an "L" shaped cross section and the opening of the angle steel (15) faces downward.
3. The multifunctional inorganic sandwich insulation fire wall structure according to claim 1, characterized in that: The insulation board (12) is 100mm thick, and the galvanized steel plate (13) wrapped around its outside is 0.9mm thick.
4. The multifunctional inorganic sandwich insulation fire wall structure according to claim 1, characterized in that: The sound insulation cotton (14) has a filling thickness equal to the side length of the angle steel (15).
5. The multifunctional inorganic sandwich insulation fire wall structure according to claim 1, characterized in that: The flame-retardant sealant (17) is applied to the outer surface of the adjacent angle steel (15).
6. The multifunctional inorganic sandwich insulation fire wall structure according to claim 1, characterized in that: The polyurethane fiber sound-absorbing panel (18) and the decorative panel (19) are pasted together.
7. The multifunctional inorganic sandwich insulation fire wall structure according to claim 1, characterized in that: The insulation board (12) and the flame-retardant fireproof board (16) are pasted together.