A type of noise-reducing composite wall panel for the exterior walls of old residential communities

Abstract

This utility model discloses a noise-reducing composite wall panel for exterior walls of old residential communities, relating to the field of urban renewal technology. The utility model includes a panel body comprising a high-frequency sound insulation layer, a mid-frequency sound insulation layer, and a low-frequency sound insulation layer. The high-frequency sound insulation layer is composed of rock wool board and basalt reinforcing mesh, with a hydrophobic coating on the surface of the basalt reinforcing mesh. The mid-frequency sound insulation layer is composed of glass wool, with basalt fiber mesh embedded between the glass wool layers. The low-frequency sound insulation layer is composed of gypsum board, with an inorganic damping agent added internally. The rock wool board blocks high-frequency noise, the basalt reinforcing mesh enhances structural rigidity and prevents wind-load deformation, and the glass wool and basalt fiber mesh form a sound wave maze path to absorb mid-frequency noise while also providing thermal insulation. The gypsum board captures low-frequency vibrations, and the limiting groove and fiberboard increase the connectivity of the panel body. The first insert plate, the second insert plate, and the abutment membrane reduce gaps during panel connection, thereby reducing sound leakage and increasing sound insulation performance.

Description

Technical Field

[0001] This utility model relates to the field of urban renewal technology, specifically to a noise-reducing composite wall panel for the exterior walls of old residential communities. Background Technology

[0002] Urban renewal refers to the necessary and planned reconstruction of areas within a city that are no longer suited to modern urban life. It involves the continuous improvement and optimization of urban spatial form and function within the built-up area, aiming to improve the urban living environment, optimize the industrial structure, and enhance the level of public facilities services, thereby promoting high-quality urban development.

[0003] Urban renewal in old residential areas is mainly reflected in the following aspects: infrastructure upgrading, building appearance and structural renovation, public space optimization, and improvement of supporting service facilities;

[0004] The renovation of building appearance and structure mainly aims to improve the aesthetics of the community and its thermal insulation and sound insulation performance. This involves painting or pasting decorative panels on the exterior walls of old communities. Since most old communities were not built with the separation of pedestrians and vehicles in mind and do not have underground parking, cars are parked in the gaps between buildings. When cars drive and start, they generate a roaring sound, forming low-frequency noise. This, combined with human voices and other sounds, creates a mixed noise with high, medium and low frequencies. The exterior wall panels used in the renovation of existing old communities mostly use single-density sound-absorbing materials, which cannot effectively absorb and isolate the mixed noise. Utility Model Content

[0005] The purpose of this utility model is to provide a noise-reducing composite wall panel for the exterior walls of old residential communities, so as to solve the above-mentioned shortcomings in the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a noise-reducing composite wall panel for exterior walls of old residential communities, comprising a panel body, wherein the panel body comprises, from the outside to the inside, a high-frequency sound insulation layer, a mid-frequency sound insulation layer, and a low-frequency sound insulation layer; the high-frequency sound insulation layer is composed of high-density rock wool board and basalt reinforcing mesh, and the outer surface of the basalt reinforcing mesh is coated with a hydrophobic coating; the mid-frequency sound insulation layer is composed of glass wool, with basalt fiber mesh embedded between the glass wool layers; the low-frequency sound insulation layer uses gypsum board as the base material, and inorganic damping agents are added inside it.

[0007] Preferably, the thickness of the basalt reinforcing mesh is 0.5-1mm, and the thickness of the rock wool board is 30-50mm.

[0008] Preferably, the thickness of the glass wool is 30-40 mm.

[0009] Preferably, the gypsum board has a thickness of 12 mm.

[0010] Preferably, a first arc plate and a second guard plate are fixedly provided on both sides of the plate body, and a limiting groove is provided on the side wall of each second guard plate, and two limiting plates are fixedly provided on the first arc plate.

[0011] Preferably, an elastic post is fixedly provided between the two limiting plates on each of the first arc plates.

[0012] Preferably, a first connecting plate and a second connecting plate are fixedly provided on both sides of the plate, a first insert plate is fixedly provided on the side of the plate closer to the first connecting plate, and a second insert plate is fixedly provided on the side of the plate closer to the second connecting plate.

[0013] Preferably, an abutment membrane is fixedly provided between the first connecting plate and the first insert plate, and between the second connecting plate and the second insert plate.

[0014] In the above technical solution, this utility model provides a noise reduction composite wall panel for the exterior walls of old residential areas, which has the following beneficial effects: high-density rock wool board blocks high-frequency noise, basalt reinforcing mesh enhances structural rigidity and prevents wind load deformation, glass wool and basalt fiber mesh form a sound wave maze path to absorb mid-frequency noise, gypsum board captures low-frequency vibration, rock wool board and glass wool also have a heat insulation effect, limiting groove and fiber board increase the connectivity of the panel, and first insert plate, second insert plate and abutment membrane reduce the gaps when the panel is connected, thereby reducing sound leakage and increasing sound insulation performance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the limiting groove provided in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first connecting plate provided in an embodiment of the present utility model;

[0019] Figure 4 This is a structural schematic diagram of the plate cross-section provided in an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the abutment membrane provided in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Board body; 2. Rock wool board; 201. Basalt reinforcing mesh; 3. Glass wool; 4. Gypsum board; 5. First protective board; 6. Second protective board; 7. Limiting groove; 8. Limiting plate; 9. Elastic column; 10. First connecting plate; 11. First insert plate; 12. Abutment membrane; 13. Second connecting plate; 14. Second insert plate. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Please see Figure 1-5 A noise reduction composite wall panel for the exterior walls of old residential communities. The technical solution proposed in this utility model includes a panel 1, which consists of a high-frequency sound insulation layer, a mid-frequency sound insulation layer, and a low-frequency sound insulation layer from the outside to the inside. The high-frequency sound insulation layer is composed of a high-density rock wool board 2 and a basalt reinforcing mesh 201. The outer surface of the basalt reinforcing mesh 201 is coated with a hydrophobic coating. The mid-frequency sound insulation layer is composed of glass wool 3, with basalt fiber mesh embedded between the layers of the glass wool 3. The low-frequency sound insulation layer uses gypsum board (4) as the base material, with an inorganic damping agent added inside. The inorganic damping agent is vermiculite or an asbestos substitute. The low-frequency sound insulation layer of the panel 1 is in contact with the community wall, and the high-frequency sound insulation layer is the outermost layer. The rock wool board 2 is mainly composed of basalt fiber with a fiber diameter of 4–7 μm, forming a dense mesh. The structure, with its dense microporous structure, reflects and absorbs high-frequency noise, such as vehicle horns and metallic collisions. Rock wool board 2 serves as the main thermal and sound insulation layer, meeting fire resistance and durability requirements. Basalt reinforcing mesh 201 is composited on the outer surface of rock wool board 2. This basalt reinforcing mesh 201 is woven at a 45° angle with a mesh density of 150–200 meshes, enhancing wind pressure resistance and preventing sound insulation failure in older residential areas due to wind load deformation. The middle layer, glass wool 3, has a fiber diameter ≤8μm, with basalt fiber mesh embedded between layers, forming a "sound labyrinth" to enhance scattering. The low-frequency sound insulation layer uses gypsum board 4 as the matrix; its damping components convert the mechanical energy of low-frequency vibrations into heat energy (damping effect), effectively suppressing the resonance of the board itself. It is particularly effective at blocking low-frequency noise (such as pipe water flow and equipment noise) in the 100-300Hz range. The hydrophobic coating reduces rainwater adhesion.

[0025] Specifically, the thickness of the basalt reinforcing mesh 201 is 0.5-1mm, and the thickness of the rock wool board 2 is 30-50mm; the density of the rock wool board 2 is ≥120kg / m³. During the molding stage of the rock wool board 2, the woven basalt reinforcing mesh 201 is laid on the surface, and hot-pressed at a high temperature of 120-150℃ to embed the reinforcing mesh into the surface layer of the rock wool to a depth of about 0.5-1mm, forming a "mesh-cotton interlocking" structure.

[0026] Specifically, the thickness of glass wool 3 is 30-40mm; glass wool 3 is centrifugal glass wool, and the density of glass wool 3 is 40-60 kg / m³. It optimizes mid-frequency absorption, such as human voice. Glass wool 3 and rock wool board 2 are interlocked with sawtooth teeth to eliminate interlayer gaps.

[0027] Specifically, the thickness of gypsum board 4 is 12mm.

[0028] Specifically, a first arc plate and a second protective plate 6 are fixedly installed on both sides of the plate 1. Each second protective plate 6 has a limiting groove 7 on its side wall, and two limiting plates 8 are fixedly installed on the first arc plate. The first protective plates 5 and second protective plates 6 support and protect the four corners of the plate 1, thereby increasing the strength of the plate 1 and preventing corner breakage due to impacts. Figure 3 As shown, a first arc plate and a second guard plate 6 are fixedly installed on both sides of the plate 1. Each limiting groove 7 is aligned with the corresponding limiting plate 8 on both sides. The end of the limiting plate 8 away from the first guard plate 5 has a protrusion. The limiting plate 8 is made of elastic stainless steel. The limiting groove 7 is T-shaped. When installing the plate 1, first fix one plate 1 to the wall, then align the first guard plate 5 and the second guard plate 6 of the other plate 1, and move the plate 1 so that the limiting plate 8 is inserted into the corresponding limiting groove 7. During the process of the limiting plate 8 entering the limiting groove 7, the protrusion will abut against the end of the limiting groove 7, thereby deforming the limiting plate 8. When the two plates 1 are completely joined together, each limiting plate 8 moves to the short arm end of the corresponding T-shaped limiting groove 7. At this time, the limiting plate 8 is reset, and the protrusion is inserted into the two end arms of the T-shaped fiber groove, thereby locking the two plates 1 together and increasing the connectivity of the plates 1.

[0029] Specifically, an elastic post 9 is fixedly installed between the two limiting plates 8 on each first arc plate; the elastic post 9 is made of rubber and provides certain support and buffer for the two limiting plates 8.

[0030] Specifically, a first connecting plate 10 and a second connecting plate 13 are fixedly installed on both sides of the plate 1, a first insert plate 11 is fixedly installed on the side of the plate 1 closest to the first connecting plate 10, and a second insert plate 14 is fixedly installed on the side of the plate 1 closest to the second connecting plate 13. As shown in the figure, the first connecting plate 10 is located on the lower surface of the plate 1, the second connecting plate 13 is located on the upper surface of the plate 1, and the first insert plate 11 and the second insert plate 14 are staggered. When the two plates 1 are joined together, the first insert plate 11 and the second insert plate 14 abut together. When the two plates 1 are joined together, they are connected by the first connecting plate 10, the second connecting plate 13, the first insert plate 11, and the second insert plate 14, which reduces the gap between the two plates 1, effectively reduces rainwater leakage, reduces the thermal bridge effect, and enhances the thermal insulation performance.

[0031] Specifically, abutment membranes 12 are fixedly provided between the first connecting plate 10 and the first insert plate 11, and between the second connecting plate 13 and the second insert plate 14. When the two plates 1 are connected together, the first insert plate 11 is inserted between the second insert plate 14 and the second connecting plate 13, and the second insert plate 14 is inserted between the first connecting plate 10 and the first insert plate 11. At this time, the abutment membranes 12 form an interference fit, which further reduces the connection gap between the plates 1, thereby reducing sound leakage.

[0032] 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 noise-reducing composite wall panel for exterior walls of old residential communities, comprising a panel body (1), characterized in that, The plate (1) consists of a high-frequency sound insulation layer, a mid-frequency sound insulation layer, and a low-frequency sound insulation layer from the outside to the inside. The high-frequency sound insulation layer is composed of high-density rock wool board (2) and basalt reinforcing mesh (201), and the outer surface of the basalt reinforcing mesh (201) is coated with a hydrophobic coating. The mid-frequency sound insulation layer is composed of glass wool (3), and basalt fiber mesh is embedded between the layers of the glass wool (3); The low-frequency sound insulation layer uses gypsum board (4) as the base material and adds inorganic damping agent inside.

2. The noise-reducing composite wall panel for exterior walls of old residential areas according to claim 1, characterized in that, The thickness of the basalt reinforcing mesh (201) is 0.5-1mm, and the thickness of the rock wool board (2) is 30-50mm.

3. The noise-reducing composite wall panel for exterior walls of old residential areas according to claim 1, characterized in that, The thickness of the glass wool (3) is 30-40 mm.

4. The noise-reducing composite wall panel for exterior walls of old residential areas according to claim 1, characterized in that, The gypsum board (4) is 12 mm thick.

5. The noise-reducing composite wall panel for exterior walls of old residential areas according to claim 1, characterized in that, The plate (1) is fixedly provided with a first arc plate and a second guard plate (6) on both sides. Each second guard plate (6) has a limit groove (7) on its side wall. Two limit plates (8) are fixedly provided on the first arc plate.

6. The noise-reducing composite wall panel for exterior walls of old residential areas according to claim 5, characterized in that, An elastic column (9) is fixedly provided between the two limiting plates (8) on each of the first arc plates.

7. The noise-reducing composite wall panel for exterior walls of old residential areas according to claim 1, characterized in that, A first connecting plate (10) and a second connecting plate (13) are fixedly provided on both sides of the plate (1). A first insert plate (11) is fixedly provided on the side of the plate (1) near the first connecting plate (10), and a second insert plate (14) is fixedly provided on the side of the plate (1) near the second connecting plate (13).

8. The noise-reducing composite wall panel for exterior walls of old residential areas according to claim 7, characterized in that, An abutment film (12) is fixedly provided between the first connecting plate (10) and the first insert plate (11), and between the second connecting plate (13) and the second insert plate (14).

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