The main structure of soundproof enclosure is its enclosure wall. When the wall of the enclosure has enough sound insulation, it can block the noise of the sound source machinery and equipment from going out, so that the noise can be reduced to below the permitted sound level. In accordance with the law of mass, the structure of the enclosure wall should be heavy, for example, the use of brick, stone, concrete or thick steel plate construction; but most cases due to the site of the spatial conditions, machine maintenance and acoustic enclosure disassembly and transportation and other factors, the requirements of the enclosure wall structure is light, easy to dismantle, which makes the enclosure wall of this acoustic isolation is generally used in the thinner sheet metal, decorated with a certain thickness of sound-absorbing materials. Determine the structure of the acoustic enclosure, according to the requirements of the insertion loss, determine the acoustic enclosure structure of the acoustic insulation, and then according to the structure of the acoustic insulation and the actual situation of the selection of the specific structure.
When the enclosure wall vibration is large, the outer or inner surface of the metal plate can be coated with some internal loss coefficient of the damping material, such as asphalt paste, asbestos asphalt paste, etc.. In order to prevent its solid sound transmission, can be installed under the sound enclosure equipment vibration isolator or laying vibration isolation materials.
In the actual problem of dealing with noise, but also due to the heat dissipation of machinery and equipment in the acoustic enclosure cover wall to leave a certain amount of holes. Usually in the hole on the installation of a certain length of muffler, so that the muffler's noise reduction and acoustic enclosure enclosure wall sound insulation is equivalent, so that neither reduces the effect of noise reduction, but also to achieve the purpose of ventilation and cooling.