Sound insulation screen interference device

Abstract

The utility model discloses a sound insulation screen interference device which comprises a sound insulation screen body, a shell is installed at the top end of the sound insulation screen body, the side, corresponding to noise waves, of the shell is an arc face which is concaved inwards and used for concentrating sound waves, and a damping felt is arranged in the arc face of the shell and used for reducing resonance generated by concentrating the sound waves. The damping felt in the front plate can reduce resonance generated by the sound waves to the shell, the sound waves and external sound waves are reversely superposed and offset through the first interference grooves, a part of noise is reduced, and the sound waves which bypass the front end of the shell and reach the top end of the shell enter the noise interference assembly and are reflected in the interference grooves with different depths. The second interference grooves in the multiple interference noise assemblies are communicated through the openings, the sound waves located at the top end of the sound insulation screen body can enter the second interference grooves to be reflected, the sound waves and the external sound waves are reversely overlaid and counteracted, and therefore the noise is reduced.

Description

Technical Field

[0001] This utility model relates to the field of soundproofing technology, specifically to a soundproofing interferometer. Background Technology

[0002] In modern buildings and transportation areas, noise control is increasingly important. This is generally achieved by setting up sound insulation and noise reduction facilities along the sound wave scattering path, such as sound barrier panels. However, in practical applications, sound barrier panels cannot be too high, as they are easily affected by wind loads and may cause accidents. Therefore, some special sound insulation and noise reduction structures are set at the top of the sound barrier panels to overcome this problem. However, the height of the sound barrier is limited in the existing technology, and it is difficult to control the diffracted sound at the top of the sound barrier. The top of the sound barrier becomes a secondary noise source. To address this, a sound barrier interferometer installed at the top of the sound barrier is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a soundproof screen interferometer to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a soundproof screen interferometer, comprising a soundproof screen body, a housing installed at the top of the soundproof screen body, the housing having an inwardly concave arc surface on the side corresponding to the noise wave for concentrating the sound wave, a damping felt provided inside the arc surface of the housing for reducing the resonance generated by the concentrated sound wave, an interference noise component installed at the upper end of the housing for silencing and reducing noise of the sound wave that bypasses the housing to reach the upper end, two adjacent interference noise components being connected to each other and equipped with an upper cover plate, the connection of the interference noise components being used to cancel each other out after different segments of sound waves enter to reduce noise.

[0005] Preferably, the housing includes a lower sealing plate, a front plate, a rear plate, an upper cap, and side sealing plates. The front plate and the rear plate are both inclined inward to form an arc surface. The lower sealing plate is connected to the soundproof barrier body. The interference noise component is installed between the lower sealing plate and the rear plate. The front plate and the rear plate are installed on the lower sealing plate. The interference noise component is connected to the front plate. The upper cap is installed on the interference noise component. A first interference groove is formed between the upper cap and the front plate. The side sealing plates are installed on both sides of the interference noise component.

[0006] Preferably, the interference noise component includes a second interference groove, a third interference groove, and a fourth interference groove, the internal depths of the second interference groove, the third interference groove, and the fourth interference groove decrease sequentially, a middle partition is installed on the outer wall of the second interference groove, and the middle partition is connected to the lower sealing plate.

[0007] Preferably, the side sealing plate has an opening that communicates with the second interference groove.

[0008] Preferably, a first sound-absorbing cotton is installed on the side wall of the partition plate, the front plate is inverted L-shaped and the upper end plane of the front plate is recessed inward, the damping felt is installed on the inner end of the front plate, and the first sound-absorbing cotton and the damping felt cover the inner end of the cavity formed between the partition plate, the front plate and the lower sealing plate.

[0009] Preferably, a second sound-absorbing cotton is installed on the inner end of the rear plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: A soundproof screen interferometer, through the set shell, can concentrate sound waves, and the damping felt inside the front plate can reduce the resonance of sound waves on the shell. The sound waves and external sound waves are superimposed and canceled by the first interference groove, reducing some noise. The sound waves that bypass the front end of the shell and reach its top enter the interference noise component and are reflected in the interference grooves at different depths, so that the sound waves and external sound waves are superimposed and canceled by each other, thereby achieving the purpose of further reducing noise. The second interference grooves in the multiple interference noise components are connected by openings, which can allow the sound waves at the top of the soundproof screen body to enter the second interference groove for reflection and anti-superposition with the external sound waves to cancel each other out, thereby reducing noise. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the housing and its connection structure of the present invention;

[0012] Figure 2 This is a cross-sectional view of the shell structure of this utility model;

[0013] Figure 3 This is an anatomical diagram of the housing and its connecting structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the housing and the soundproof barrier body after assembly.

[0015] Figure 5 This is a side sectional view of the structure of the shell and the soundproof barrier body after assembly.

[0016] In the diagram: 1-Soundproof barrier body, 2-Shell, 21-Lower sealing plate, 22-Front plate, 23-Rear plate, 24-Upper cap, 25-Side sealing plate, 26-First interference groove, 3-Interference noise component, 31-Second interference groove, 32-Third interference groove, 33-Fourth interference groove, 34-Middle partition, 4-Upper cover plate, 5-Opening, 6-First sound-absorbing cotton, 7-Second sound-absorbing cotton, 8-Damping felt. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-5 This utility model provides a technical solution: a soundproof screen interferometer, including a soundproof screen body 1, a housing 2 installed at the top of the soundproof screen body 1, the housing 2 having an inwardly concave arc surface on the side corresponding to the noise wave for concentrating the sound wave, a damping felt 8 provided inside the arc surface of the housing 2 for reducing the resonance generated by the concentrated sound wave, an interference noise component 3 installed at the upper end of the housing 2 for silencing and reducing noise of the sound wave that bypasses the housing 2 and reaches the upper end, two adjacent interference noise components 3 are connected to each other and are equipped with an upper cover plate 4, the connection of the interference noise components 3 is used to cancel each other out after different segments of sound waves enter to reduce noise.

[0019] The housing 2 includes a lower sealing plate 21, a front plate 22, a rear plate 23, an upper cap 24, and a side sealing plate 25. The front plate 22 and the rear plate 23 are both inclined inward to form an arc surface. The lower sealing plate 21 is connected to the soundproof barrier body 1. The interference noise component 3 is installed between the lower sealing plate 21 and the rear plate 23. The front plate 22 and the rear plate 23 are installed on the lower sealing plate 21. The interference noise component 3 is connected to the front plate 22. The upper cap 24 is installed on the interference noise component 3. A first interference groove 26 is formed between the upper cap 24 and the front plate 22. The side sealing plates 25 are installed on both sides of the interference noise component 3.

[0020] The interference noise component 3 includes a second interference groove 31, a third interference groove 32 and a fourth interference groove 33. The internal depths of the second interference groove 31, the third interference groove 32 and the fourth interference groove 33 decrease sequentially. A middle partition plate 34 is installed on the outer wall of the second interference groove 31 and is connected to the lower sealing plate 21.

[0021] The side sealing plate 25 has an opening 5, which is connected to the second interference groove 31.

[0022] The first sound-absorbing cotton 6 is installed on the side wall of the partition plate 34. The front plate 22 is inverted L-shaped and the upper end plane of the front plate 22 is recessed inward. The damping felt 8 is installed on the inner end of the front plate 22 and is covered by the first sound-absorbing cotton 6 and the damping felt 8 in the inner end of the cavity formed between the partition plate 34, the front plate 22 and the lower sealing plate 21.

[0023] The inner end of the rear plate 23 is equipped with a second sound-absorbing cotton 7.

[0024] Working principle: This utility model uses a housing 2, whose curved surface can concentrate sound waves. The damping felt 8 inside the front panel 22 can reduce the resonance caused by sound waves impacting the housing 2. The sound waves and external sound waves are superimposed and canceled by the first interference groove 26, reducing some noise. The sound waves that bypass the front end of the housing 2 and reach its top enter the interference noise component 3 and are reflected in the interference grooves at different depths, so that the sound waves and external sound waves are superimposed and canceled, thereby further reducing noise. The second interference grooves 31 in the multiple interference noise components 3 are connected by openings, which can allow the sound waves at the top of the soundproof screen to enter the second interference grooves 31 for reflection and anti-superposition with the external sound waves to reduce noise.

[0025] 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 soundproof screen interferometer, comprising a soundproof screen body, characterized in that: The top of the soundproof barrier body is equipped with a shell. The shell has an inwardly concave arc surface on the side corresponding to the noise wave to concentrate the sound wave. Damping felt is provided inside the arc surface of the shell to reduce the resonance generated by the concentrated sound wave. An interference noise component is installed at the upper end of the shell to reduce noise by silencing the sound wave that bypasses the shell and reaches the upper end. Adjacent interference noise components are connected to each other and are equipped with a top cover plate. The connection of the interference noise components is used to cancel each other out after different segments of sound waves enter, thereby reducing noise.

2. The soundproof screen interferometer according to claim 1, characterized in that: The housing includes a lower sealing plate, a front plate, a rear plate, an upper cover, and side sealing plates. The front plate and the rear plate are both inclined inward to form an arc surface. The lower sealing plate is connected to the soundproof barrier body. The interference noise component is installed between the lower sealing plate and the rear plate. The front plate and the rear plate are installed on the lower sealing plate. The interference noise component is connected to the front plate. The upper cover is installed on the interference noise component. A first interference groove is formed between the upper cover and the front plate. The side sealing plates are installed on both sides of the interference noise component.

3. The soundproof screen interferometer according to claim 2, characterized in that: The interference noise component includes a second interference groove, a third interference groove, and a fourth interference groove. The internal depths of the second, third, and fourth interference grooves decrease sequentially. A middle partition is installed on the outer wall of the second interference groove, and the middle partition is connected to the lower sealing plate.

4. The soundproof screen interferometer according to claim 2, characterized in that: An opening is provided on the side sealing plate, and the opening is connected to the second interference groove.

5. The soundproof screen interferometer according to claim 3, characterized in that: The first sound-absorbing cotton is installed on the side wall of the partition plate. The front plate is inverted L-shaped and the upper end plane of the front plate is recessed inward. The damping felt is installed on the inner end of the front plate and is wrapped in the inner end of the cavity formed between the partition plate, the front plate and the lower sealing plate by the first sound-absorbing cotton and the damping felt.

6. The soundproof screen interferometer according to claim 2, characterized in that: A second sound-absorbing cotton is installed on the inner end of the rear plate.

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