Wall structure with sound insulation function

Abstract

The utility model relates to the related technical field of sound insulation wall structures, and discloses a wall structure with a sound insulation function, which comprises a base layer wall, a first damping layer, a main sound insulation layer, a Helmholtz resonant cavity, a second damping layer and a facing layer, and a conical sound absorption wedge array is arranged in the Helmholtz resonant cavity. The sound insulation index of sound waves can be improved through the arrangement of the main sound insulation layer, and an effective air flow resistance optimization structure can be formed along with the arrangement of the conical sound absorption wedges in the Helmholtz resonant cavity, so that the aim of effectively absorbing sound is ensured; and through the arrangement of the first damping layer and the second damping layer, the inherent frequency of the wall body can be shifted to a non-sensitive frequency band, so that the vibration energy is attenuated, and the effective sound insulation purpose of the whole wall body structure is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of soundproof wall structure, and in particular to a wall structure with soundproof function. Background Technology

[0002] The main function of the wall structure is to enclose and divide space. In load-bearing structures, the walls combine load-bearing and enclosure functions. In frame structures, the function of the walls is to enclose and divide space. The walls must have sufficient strength and stability, and have the ability to insulate, heat-insulate, sound-insulate, fireproof, and waterproof.

[0003] Most existing wall structures have basic sound insulation functions, but due to their simple structure, usually consisting of two or three layers, the sound insulation effect is poor. In addition, the integrated design makes the installation, maintenance and disassembly steps relatively complicated, which cannot meet people's requirements for high-quality soundproof rooms. In order to solve these problems, a wall structure with sound insulation function is proposed. Utility Model Content

[0004] This utility model provides a wall structure with sound insulation function, which solves the problems in the background art mentioned above.

[0005] The technical problem solved by this utility model is achieved through the following technical solution:

[0006] A wall structure with sound insulation function includes a base wall and a first damping layer, a main sound insulation layer, a Helmholtz resonant cavity, a second damping layer and a finishing layer stacked in sequence.

[0007] The Helmholtz resonant cavity is equipped with a cone-shaped sound-absorbing wedge array, and the wedge surface is provided with several Φ1-3mm micropores;

[0008] The main sound insulation layer is connected to the base wall through an elastic keel system, which includes Z-shaped steel keels and rubber pads set at the connection nodes.

[0009] Preferably, the first damping layer is a butyl rubber layer.

[0010] Preferably, the conical sound-absorbing wedges are arranged sequentially from top to bottom along the Helmholtz resonant cavity.

[0011] Preferably, the rubber liner has a sandwich structure, comprising an intermediate silicone layer and a surface EPDM rubber layer.

[0012] Preferably, the second damping layer comprises alternating layers of neoprene rubber and polyurethane.

[0013] Preferably, the decorative layer is a perforated calcium silicate board.

[0014] The advantages and positive effects of this utility model are as follows: the sound insulation of sound waves can be improved by setting the main sound insulation layer, and the setting of the conical sound-absorbing wedge in the Helmholtz resonant cavity can form an effective airflow resistance optimization structure to ensure effective sound absorption. Furthermore, the setting of the first damping layer and the second damping layer can shift the natural frequency of the wall to the non-sensitive frequency band, thereby attenuating the vibration energy and achieving the purpose of effective sound insulation of the entire wall structure. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] The markings in the attached diagram are described below:

[0018] 1. Base wall;

[0019] 2. First damping layer;

[0020] 3. Main sound insulation layer;

[0021] 4. Helmholtz resonant cavity; 41. Conical sound-absorbing wedge array; 42. Micropores;

[0022] 5. Second damping layer;

[0023] 6. Finishing layer;

[0024] 7. Flexible keel system; 71. Z-shaped steel keel; 72. Rubber pad. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0026] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0027] Reference Figure 1As shown, the wall structure mainly serves to enclose and divide space. In load-bearing structures, the walls combine load-bearing and enclosure functions. In frame structures, the walls enclose and divide space. The walls must have sufficient strength and stability, and possess the ability to insulate, heat-insulate, sound-insulate, fireproof, and waterproof. Most existing wall structures have basic sound insulation functions, but due to their simple structure, usually consisting of two or three layers, the sound insulation effect is poor. Furthermore, their integrated design makes installation, maintenance, and disassembly complex, failing to meet the requirements for high-quality soundproof rooms. To address these issues, a wall structure with sound insulation function is proposed, comprising a base wall 1 and sequentially stacked layers: a first damping layer 2, a main sound insulation layer 3, a Helmholtz resonant cavity 4, a second damping layer 5, and a finishing layer 6.

[0028] The Helmholtz resonant cavity 4 is provided with a conical sound-absorbing wedge array 41, and the wedge surface is provided with a number of Φ1-3mm micropores 42.

[0029] The main sound insulation layer 3 is connected to the base wall 1 through an elastic keel system 7. The elastic keel system 7 includes a Z-shaped steel keel 71 and a rubber pad 72 set at the connection node. The main sound insulation layer can improve the sound insulation of sound waves. With the setting of the conical sound-absorbing wedge in the Helmholtz resonant cavity, an effective airflow resistance optimization structure can be formed to ensure effective sound absorption. Furthermore, the setting of the first damping layer and the second damping layer can shift the natural frequency of the wall to a non-sensitive frequency band, thereby attenuating the vibration energy and achieving the purpose of effective sound insulation of the entire wall structure.

[0030] It should be noted that the gradient damping layer formed by the Helmholtz cavity 4, the first damping layer 2, and the second damping layer 5, plus the elastic keel 7, achieves the effect of consuming low-frequency energy through acoustic resonance, and the gradient damping layer suppresses mid-to-high frequency structural vibrations, while the elastic keel blocks the vibration transmission path. Through the above structure, a relatively stable soundproof wall structure can be formed.

[0031] Furthermore, the first damping layer 2 is a butyl rubber layer; by setting the butyl rubber layer, the natural frequency of the wall can be shifted to a non-sensitive frequency band above 4000Hz, and the measured vibration energy attenuation rate is increased to 38dB / s.

[0032] It should also be noted that the conical sound-absorbing wedges 41 are arranged sequentially from top to bottom along the Helmholtz resonant cavity 4. The purpose of this arrangement is to ensure that sound is effectively absorbed from all angles.

[0033] Additionally, the rubber liner 72 has a sandwich structure, comprising an intermediate layer of silicone and a top layer of EPDM rubber; the sandwich liner structure reduces impact noise by 22%.

[0034] It is worth mentioning that the second damping layer 5 comprises alternating layers of neoprene rubber and polyurethane, wherein the thickness of the neoprene rubber layer is 1.5-2 times that of the polyurethane layer.

[0035] It should be noted that the decorative layer 6 is a perforated calcium silicate board.

[0036] It should be emphasized that the embodiments described in this utility model are illustrative rather than limiting. Therefore, this utility model is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this utility model are also within the scope of protection of this utility model.

Claims

1. A wall structure with sound insulation function, characterized in that: It includes a base wall (1) and a first damping layer (2), a main sound insulation layer (3), a Helmholtz resonant cavity (4), a second damping layer (5), and a finishing layer (6) stacked in sequence; The Helmholtz resonant cavity (4) is provided with an array of conical sound-absorbing wedges (41), and the surface of the wedges is provided with several Φ1-3mm micropores (42); The main sound insulation layer (3) is connected to the base wall (1) through an elastic keel system (7), which includes Z-shaped steel keel (71) and rubber pads (72) set at the connection nodes.

2. A wall structure with sound insulation function according to claim 1, characterized in that: The first damping layer (2) is a butyl rubber layer.

3. A wall structure with sound insulation function according to claim 2, characterized in that: The conical sound-absorbing wedges (41) are arranged sequentially from top to bottom along the Helmholtz resonant cavity (4).

4. A wall structure with sound insulation function according to claim 3, characterized in that: The rubber liner (72) has a sandwich structure, comprising an intermediate layer of silicone and an outer layer of EPDM rubber.

5. A wall structure with sound insulation function according to claim 2, characterized in that: The second damping layer (5) comprises alternating layers of neoprene rubber and polyurethane.

6. A wall structure with sound insulation function according to claim 1, characterized in that: The decorative layer (6) is a perforated calcium silicate board.

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