Method of controlling noise of air compressor

Control of noise pollution of air compressors Noise is a kind of sound that people don’t need. It is a kind of public hazard that has been raised to the agenda and needs to be solved. Noise pollution is multifaceted, but the pollution of air compressor noise is classified. Levels above 40dBA have varying degrees of impact on sleep. Exposure to noise for a long time will cause permanent deafness. It often causes indigestion, poor spirits, nausea and vomiting, and even personal injury.

Air compressors are general-purpose machinery products with a large volume and a wide range. They are widely used in machinery, mining, chemical and construction sectors. The noise level it produces is high and the impact is large. It has become one of the important environmental noise pollution sources, from production to For all manufacturing departments, solving the noise problem of air compressors can improve the quality of products in one step. Solving the noise of air compressors can greatly help improve people’s livelihood and environmental pollution. The noise pollution of air compressors needs to be controlled reasonably. The country has already been in this regard. Increased investment,

   Noise pollution is also an important factor in environmental pollution. People living near factories or highways are more or less troubled by noise from machinery and vehicles. The use of noise pollution indicators as indicators for assessing factories and living environment has long been included in the national environmental protection standards. Then, equipment production suppliers should also have the responsibility and obligation to reduce noise pollution during the operation of machinery and equipment through technical means, and better create a low-decibel working and living environment.

   Air compressor noise control mainly adopts three aspects: muffler, silencing tunnel and sound insulation technology:

   1. Install air compressor 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.

  2. Set up air compressor muffler tunnel:

   An underground or semi-underground tunnel with sound-absorbing tunnels. The walls of the tunnel are made of sound-absorbing bricks. 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 general mufflers.

  3. Establish sound insulation cover:

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 air compressor station, the tall and empty factory buildings have heavy reverberation. If the sound absorber is dispersed on the ceiling 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.