Bolet air compressor is a wide range of general mechanical products，Widely used in machinery, mining, chemical and construction departments，The noise level generated by it is high and the influence is large，It has become one of the important pollution sources of environmental noise，From production to manufacturing，Solving the noise problem of air compressor can improve the quality of products one step at a time，Solving the noise of air compressors can greatly help improve people's livelihood and environmental pollution，Air compressor noise pollution needs reasonable control，The state has stepped up investment in this area。

Noise pollution is also an important factor in environmental pollution, people living near factories or roads, more or less will be troubled by the noise of machinery and equipment as well as cars。The noise pollution index as an indicator to assess the factory and living environment has long been included in the index of environmental protection standards by the state。Then, equipment manufacturers and suppliers should also have the responsibility and obligation to reduce noise pollution in the operation of mechanical equipment through technical means, and better create a low decibel working and living environment。

The noise control of air compressor mainly adopts three aspects: muffler, muffler pit and sound insulation technology

1, install the air compressor muffler

The main noise sources are inlet and exhaust ports, and appropriate inlet and exhaust mufflers should be selected。The frequency spectrum of air inlet noise of air compressor is low frequency, and the inlet muffler should choose the resistant structure or the impedance compound structure based on individual and resistance。The air compressor exhaust pressure is large, the air flow speed is high, should be used in the air compressor exhaust port small muffler。

2, set up the air compressor noise pit

The underground or semi-underground tunnel of the acoustic tunnel is made of bricks with good acoustic absorption。The inlet pipe of the air compressor is connected with the silencing pit, so that the air enters the air compressor through the silencing pit。The use of silencer tunnel can greatly reduce the intake noise of the air compressor, and the service life is longer than that of the general silencer。

3. Build sound insulation cover

After the inlet and outlet of the air compressor is installed with a muffler or the sound suppression tunnel is set up, 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 sound insulation cover should also be installed on the unit of the air compressor。

4, hanging space sound absorber

In the air compressor station, the reverberation of the tall and empty workshop is very heavy。If the sound absorber is dispersed in the roof of the workshop, the noise of the workshop can be reduced by 3-10db (a), and the reverberation time can be reduced by 5-10s。