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The machine soundproof screen, also known as the equipment sound barrier or the silencing barrier, is a facility inserted between the sound source (such as machine equipment) and the receiver (such as people, other machines or the environment). Its main principle is to reduce the propagation distance and intensity of the noise by blocking the propagation path of the noise, so that the sound waves are reflected, refracted, scattered and sound-absorbing during the propagation process. In addition, the soundproof screen can also block part of the air sound transmission, further reducing the propagation effect of the noise.
The structure of the machine soundproof screen usually includes the foundation part, the column and the screen body. The foundation part is buried deep underground to provide a solid and stable support for the entire structure; the columns are arranged at intervals and have sufficient strength and rigidity to bear the upper weight; the screen body is the core of the sound insulation function. Its materials are diverse, and the common ones are metal microporous plates combined with sound-absorbing materials (such as centrifugal glass fiber wool), or composite materials.
