The noise of air compressor is mainly composed of aerodynamic noise radiated by inlet and outlet, and overlapping noise of multiple sources.

The noise of air compressor is mainly concentrated in the frequency range of 250~4k (Hz), especially in medium and high frequency. According to the noise characteristics, using acoustic principle such as sound insulation, sound absorption, resonance and so on, the method of sealing and plugging is comprehensively treated by means of external septum, internal suction and noise elimination, which can effectively control the noise of the factory affected by it. In order to reduce the sound pressure level of the total sound source, the air compressor has been put into normal operation and it is difficult to reduce the noise of the equipment itself.

Through the experience of years of air compressor control, Jing Xin company has summed up a set of fast and effective management methods for sound source vocalizations.

Control of noise source

Air intake noise is a large proportion of air compressor overall noise, so intake silencer is the main means to control noise, because air compressor intake noise is basically low frequency, so the application of composite silencer with inserting tube and microporous plate can effectively solve this phenomenon.

Control noise in the way of propagation

The main methods include regional attenuation and airtight measures such as sound insulation, sound insulation and so on.

Sound absorption and sound insulation

Sound absorption: when the original sound absorption is very small, the method of improving the indoor sound absorption coefficient by sound absorption structure or sound absorbing material can effectively reduce the reverberation in the room.

Sound insulation: for buildings with brick and concrete structures, the noise impact of indoor noise can be reduced by increasing the sound insulation volume of weak links such as doors and windows.

The air compressor room is a heat generating workshop. Noise control must take full account of indoor ventilation requirements and protect equipment from being affected.

Effect test:

The noise 85dB (A) between the air compressor is reduced by 10dB (A), and the noise control design specification of the national industrial enterprise is stipulated in the 8 hour working day, and the noise is not more than 90dB (A).

The inner noise of the sound insulation is 62dB (A) and the sound insulation value is 33dB (A). The noise control design specification for industrial enterprises (GBJ87-85) stipulates that the noise of the "telephone control room" does not exceed the 70dB (A) requirement. It protects the health of the work and meets the quiet requirements of the working environment