Install the muffler
The main noise source is the intake and exhaust ports, and appropriate intake and exhaust mufflers should be selected. The frequency spectrum of air compressor intake noise presents low-frequency characteristics, and the intake muffler should use a resistant structure or an impedance composite structure based on individual and resistance. The exhaust air pressure of the air compressor is large and the air flow speed is high. A small hole muffler should be used at the air compressor exhaust port.
Set up anechoic tunnel
The underground or semi-underground tunnel of the anechoic tunnel, the wall of the tunnel is made of bricks with good sound absorption. Connect the intake pipe of the air compressor to the silencing tunnel, so that the air enters the air compressor through the silencing tunnel. The use of muffler tunnels can greatly reduce the intake noise of the air compressor, and the service life is longer than that of ordinary mufflers.
Building a sound enclosure
After installing mufflers or silencing tunnels at the intake and exhaust ports of the air compressor, the airflow noise can be reduced to below 80db(a), but the mechanical noise and motor noise of the air compressor are still very high, so the air compressor Install a sound insulation cover on the unit of the machine. 4. Suspended space acoustic body: At the Foshan Linggefeng air compressor station, the tall and empty factory buildings have heavy reverberation. If the sound absorber is dispersed and suspended on the roof of the factory building, the noise of the factory building can be reduced by 3-10db(a), and the reverberation time can be reduced by 5-10s.
