Air compressor noise control mainly uses three aspects: muffler, muffler tunnel and sound insulation technology:
Install muffler
The main noise source is the intake and exhaust ports, and suitable intake and exhaust mufflers should be selected. The frequency spectrum of the air intake noise of the air compressor has a low frequency characteristic, and the intake muffler should use a resistive structure or an impedance composite structure with individual resistance. The 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.
Set up silencing tunnels
Underground or semi-underground tunnels of muffler tunnels, the tunnel walls are made of bricks with good sound absorption. Connect the air intake pipe of the air compressor to the muffler tunnel, so that the air enters the air compressor through the muffler tunnel. The use of muffler tunnels can greatly reduce the air intake noise of the air compressor, and the service life is longer than that of ordinary mufflers.
Create a soundproof enclosure
After installing mufflers or mufflers in the inlet 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 should be Install sound insulation cover on the machine's unit. Suspension space sound-absorbing body: At the Foshan Lingge air compressor station, the tall and empty factory reverberation is heavy. If the sound absorbing body is dispersed and suspended on the ceiling of the plant, the noise of the plant can be reduced by 3-10db (a), and the reverberation time can be reduced by 5-10s.
