Composite sound absorption and insulation module

Abstract

The utility model discloses a composite sound absorption and insulation module which comprises a steel plate and a steel plate connecting hole plate, sound absorption cotton is arranged in the steel plate, a sound insulation layer is arranged between the sound absorption cotton and the steel plate, the sound insulation layer is tightly attached to the inner wall of the outer layer of the steel plate, the composite sound absorption and insulation module comprises a first steel plate, the first steel plate is hollow, and a first installation groove is formed in one side wall of the first steel plate. A first pore plate is arranged on the inner side of the first mounting groove, the first pore plate and a first steel plate are welded and formed, the first pore plate is an outer protective surface metal pore plate, first sound absorption cotton is arranged in a cavity in the first steel plate, a layer of sound insulation plate is additionally arranged between the sound absorption cotton and the steel plate in the module, and the thickness and the material of the sound insulation plate can be selected according to requirements; therefore, rigidity of the steel plate can be improved, reduction of self sound insulation caused by vibration of the steel plate is prevented, sound insulation of the whole module can be improved, and cost is saved compared with increase of the thickness of the outer layer steel plate or the whole module.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction engineering, in particular to a composite sound absorption and insulation module. Background Art

[0002] The composite sound-absorbing and sound-insulating modules used in noise reduction projects mainly have an outer steel plate that plays a major role in sound insulation. However, considering the cost, the thickness of the outer steel plate is generally not very thick. Some projects require relatively high noise reduction, and conventional thickness steel plates cannot guarantee to meet project requirements. Therefore, the thickness of the outer steel plate or the entire module can only be increased, which increases the cost. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a composite sound absorption and insulation module, including a steel plate, the steel plate is connected to a perforated plate, sound-absorbing cotton is arranged inside the steel plate, a sound insulation layer is arranged between the sound-absorbing cotton and the steel plate, the sound insulation layer is close to the outermost inner wall of the steel plate, and the sound insulation layer is a sound insulation board.

[0004] Preferably, the perforated plate is an outer protective metal perforated plate.

[0005] Preferably, the steel plate is a first steel plate, the first steel plate is hollow, a first installation groove is opened on one side wall of the first steel plate, a first orifice plate is arranged inside the first installation groove, and the first orifice plate is welded to the first steel plate.

[0006] Preferably: a first sound-absorbing cotton is arranged in the cavity inside the first steel plate.

[0007] Preferably: the first sound-absorbing cotton is located between the outermost layers of the first steel plate and a first sound insulation layer is provided.

[0008] Preferably, the steel plate is a second steel plate, the second steel plate is hollow, a second installation groove is opened on one side wall of the second steel plate, a second orifice plate is arranged inside the second installation groove, and the second orifice plate is welded to the second steel plate.

[0009] Preferably: a second sound-absorbing cotton is arranged in the cavity inside the second steel plate.

[0010] Preferably: the second sound-absorbing cotton is located between the outermost layers of the second steel plate and a second sound insulation layer is provided.

[0011] Preferably, the inner side wall of the second steel plate is provided with a plurality of convex ribs, and a gap is provided between two adjacent convex ribs.

[0012] Technical effects and advantages of the utility model:

[0013] In the utility model, a layer of sound insulation board is added between the sound-absorbing cotton and the steel plate inside the module. The thickness and material of the sound insulation board can be selected according to the needs, which can not only improve the rigidity of the steel plate to prevent its vibration from reducing its own sound insulation, but also improve the sound insulation of the entire module, and save costs compared to increasing the thickness of the outer steel plate or the entire module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the composite sound absorption and insulation module provided in Example 1 of the present application;

[0015] Figure 2 It is a schematic diagram of the structure of the composite sound absorption and insulation module provided in Example 2 of the present application.

[0016] In the figure: 1. first steel plate; 11. first mounting groove; 2. first perforated plate; 3. first sound-absorbing cotton; 4. first sound insulation layer; 5. second steel plate; 51. second mounting groove; 52. convex rib; 6. second perforated plate; 7. second sound-absorbing cotton; 8. second sound insulation layer. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0018] The present application provides a composite sound absorption and insulation module, comprising a steel plate, a steel plate connected to a perforated plate, sound absorbing cotton arranged inside the steel plate, a sound insulation layer arranged between the sound absorbing cotton and the steel plate, the sound insulation layer being closely attached to the inner wall of the outer layer of the steel plate,

[0019] See also Figures 1-2 In the present embodiment, the composite sound-absorbing and sound-insulating module comprises a first steel plate 1, which is hollow, and a first mounting groove 11 is provided on one side wall of the first steel plate 1, and a first orifice plate 2 is provided inside the first mounting groove 11, and the first orifice plate 2 is welded to the first steel plate 1, and the first orifice plate 2 is an outer protective metal orifice plate, and a first sound-absorbing cotton 3 is provided in the cavity inside the first steel plate 1, and the first sound-absorbing cotton 3 can play a role of sound insulation, and the first sound-absorbing cotton 3 is located between the outermost layers of the first steel plate 1, and a first sound insulation layer 4 is provided, and the first sound insulation layer 4 is a sound insulation board, and the sound insulation board is closely attached to the inner wall of the first steel plate 1, and is fully attached to the first steel plate 1, so as to improve the strength of the first steel plate 1, suppress its vibration, and thus improve its sound insulation.

[0020] In another embodiment, a second steel plate 5 is included, the second steel plate 5 is hollow, a second installation groove 51 is opened on one side wall of the second steel plate 5, a second orifice plate 6 is arranged inside the second installation groove 51, the second orifice plate 6 is welded to the second steel plate 5, the second orifice plate 6 is an outer protective metal orifice plate, a second sound-absorbing cotton 7 is arranged in the cavity inside the second steel plate 5, and the second sound-absorbing cotton 7 can play a role in sound insulation, the second sound-absorbing cotton 7 is located between the outermost layers of the second steel plate 5, and a second sound insulation layer 8 is arranged, the second sound insulation layer 8 is a sound insulation board, the sound insulation board is closely attached to the inner wall of the second steel plate 5, and is fully attached to the second steel plate 5, which can improve the strength of the second steel plate 5, suppress its vibration, and thus improve its sound insulation.

[0021] In this embodiment, a plurality of convex ribs 52 are provided on the inner side wall of the second steel plate 5, and a gap is provided between two adjacent convex ribs 52. When the second sound insulation layer 8 is placed inside the second steel plate 5, the two side walls of the second sound insulation layer 8 squeeze the convex ribs 52. The convex ribs 52 can increase the friction force of the inner wall of the second steel plate 5, reduce the relative movement between the second sound insulation layer 8 and the second steel plate 5, and thus improve the sound insulation.

[0022] A layer of sound insulation board is added between the sound-absorbing cotton and the steel plate inside the module. The thickness and material of the sound insulation board can be selected according to needs. It can not only improve the rigidity of the steel plate and prevent its vibration from reducing its own sound insulation, but also improve the sound insulation of the entire module, and save costs compared to increasing the thickness of the outer steel plate or the entire module.

[0023] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A composite sound absorption and insulation module, comprising a steel plate, the steel plate is connected to a perforated plate, and sound absorbing cotton is arranged inside the steel plate, characterized in that: A sound insulation layer is arranged between the sound absorbing cotton and the steel plate, the sound insulation layer is close to the outermost inner wall of the steel plate, and the sound insulation layer is a sound insulation board; The perforated plate is an outer protective metal perforated plate; The steel plate is a first steel plate (1), the first steel plate (1) is hollow, a first installation groove (11) is provided on one side wall of the first steel plate (1), a first orifice plate (2) is provided inside the first installation groove (11), and the first orifice plate (2) and the first steel plate (1) are welded together; A first sound-absorbing cotton (3) is arranged in the cavity inside the first steel plate (1); The first sound-absorbing cotton (3) is located between the outermost layers of the first steel plate (1) and a first sound insulation layer (4); The steel plate is a second steel plate (5), the second steel plate (5) is hollow, a second installation groove (51) is provided on one side wall of the second steel plate (5), a second orifice plate (6) is provided inside the second installation groove (51), and the second orifice plate (6) and the second steel plate (5) are welded together.

2. A composite sound absorption and insulation module according to claim 1, characterized in that: A second sound-absorbing cotton (7) is arranged in the cavity inside the second steel plate (5).

3. A composite sound absorption and insulation module according to claim 2, characterized in that: The second sound absorbing cotton (7) is located between the outermost layers of the second steel plate (5) and a second sound insulation layer (8) is provided.

4. A composite sound absorption and insulation module according to claim 3, characterized in that: The inner side wall of the second steel plate (5) is provided with a plurality of convex ribs (52), and a gap is provided between two adjacent convex ribs (52).

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