Sound absorption and insulation structure for silencing device

Abstract

The present invention discloses a sound absorption and insulation structure for a silencing device. The structure at least comprises an armor layer, a sound absorption layer, an energy consumption layer and an outside panel which are connected in order. The thickness of the sound absorption layer is regulated, and the quantity of the combined structure of the sound insulation layer and the energy consumption layer is increased to improve the sound absorption and insulation mass about 10-60 db, wherein the thickness of the sound absorption and insulation structure can be not less than 10cm when the sound absorption and insulation mass is improved about 10-60 db. The structure of sound absorption, sound insulation and then sound insulation after energy consumption allows the sound insulation not to generate resonance and solid propagation so as to thoroughly solve the problem of the reverberation in the silencing device or at the sound source side, the sound insulation mass is maximally improved about 60db in the condition that the thickness is less than 10cm, and the weight itself is light, and therefore the requirement of the space and sound absorption and insulation mass is satisfied in actual engineering construction and the cost is reduced.

Description

technical field [0001] The invention relates to a sound-absorbing device, in particular to a sound-absorbing and insulating structure for the sound-absorbing device. Background technique [0002] Noise reduction devices are widely used in the noise control of industrial production, but the noise reduction effect of the noise reduction device depends on the design of the noise reduction structure. From a large number of sound insulation structures to the development of sound absorption and insulation structures, the sound absorption and sound insulation are processed at the same time. However, the existing sound absorption and insulation structures have the following problems: 1. After the sound is processed, the sound and the sound insulation board oscillate, Reverberation is generated in the noise reduction device or on the side of the sound source, which makes the personnel working in this place unbearable; 2. The amount of noise reduction is not enough. Due to the limitat...

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Problems solved by technology

From a large number of sound insulation structures to the development of sound absorption and insulation structures, the sound absorption and sound insulation are processed at the same time. However, the existing sound absorption and insulation structures have the following problems: 1. After the sound is processed, the sound and the sound insulation board oscillate, Reverberation is generated in the noise reduction device or on the side of the sound source, which makes the personnel working in this place unbearable; 2. The amount of noise reduction is not enough. Due to the limitation of space and structural design, it is impossible to blindly use the sound-absorbing structure. It is thicker, and even if it is thicker, the noise reduction effect is not very different. For example, the noise reduction volume of the sound-absorbing layer is 4-12db, while the sound insulation board is generally 15-25db. When adding a layer of sound insulation board to form two layers of sound insulation board , the noise reduction effect can only increase by 4~7db, not twice the sound insulation as imagined. After the inventor's research, the reason is caused by the solid sound transmission and resonance generated on the sound insulation material. Due to the actual construction It is impossible to superimpose dozens of layers of sound insulation layers in order to achieve the ideal amount of silencing, and the existing technology fails to provide a technical solution to this problem

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