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Thermal oxidation equipment

Silencer

Duct silencer is a kind of air supply duct structure suitable for building ventilation or ventilation on ships and vessels, and has the duct designed into straight or curved or other shapes. The ventilation duct can also be designed according to the actual use of the need for a rectangular section or a circular section.

Product features：

1. The characteristic of duct silencer is that the ventilation duct is designed to be each other's inner and outer, and the wall of the inner duct is provided with dense silencer holes, the silencer layer is sealed by the outer duct between the inner and outer ducts; Therefore, when the air is fed and ventilated, the noise in the ventilation pipe can be soundproof by the silencer layer through the hole, so as to achieve the purpose of quiet ventilation. The improved silencer also has the advantages of good sound insulation and high reliability.

2. Perforated plate is generally made of thin steel plate and stainless steel plate; In order to play the sound absorption performance of the sound absorption material, the perforation rate of the perforated plate should be greater than 20%, the aperture of 3 ~ 10mm;

3. The silencer layer is a sound-absorbing material tightly filled between the inner and outer ducts; Commonly used sound-absorbing materials are glass silk wool, glass silk cloth, etc.;

4. Both ends of the inner duct are respectively provided with connecting flanges.

Operating principle：

The air duct silencer works through the silencing materials. Its structure is to fix the silencer material in the inner wall of the air flow pipeline, or arrange them in the pipe or shell in a certain way to form a silencer. The silencer material can incident on the sound energy partly absorbed, due to the porous and loose nature of the silencing material. When the sound wave enters the pores, it will cause the air and materials in the pores to produce small vibration. Due to friction and viscous resistance, a considerable part of the sound energy will be absorbed as heat energy.

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Coating duct