Introduction to exhaust muffler:

Exhaust silencers are mainly used for steam emissions and other gas emissions from industrial boilers in power, petroleum, chemical, metallurgical, textile, and other industries. It is a necessary noise reduction equipmentto eliminate steam power and noise.

Purpose of exhaust muffler and --:

Exhaust muffler is a device that prevents sound transmission and allows airflow to pass through. Various types of boiler exhaust not only have high temperature and pressure, but also emission frequency bandwidth, measuring the effectiveness of exhaust muffler,

Mainly consider the following three aspects:

1. The noise reduction capacity of the muffler can meet the requirements of the Industrial Enterprise Noise Standard.

2. Adaptability of mufflers - (design for different frequencies and temperature pressures).

3. The structure of the muffler - (reasonable size, high strength, long). The boiler exhaust muffler is developed based on the principle of composite noise reduction with resistance, spray, and resistance. It has a large noise reduction capacity, wide adaptability to frequency bands, targeted design (low pressure, high pressure, subcritical, critical), and convenient installation.

Principle of exhaust muffler:

The boiler exhaust muffler is mainly based on the theory of "small hole injection" and the principle of impedance expansion sound absorption. The boiler steam discharge has a general flow rate, high airflow noise, and needs to be expanded through a through-hole. After passing through a through-hole, the steam in the anti expansion chamber is depressurized and reduced in flow. The airflow is then sprayed out through a small hole, and the sound power of each octave band has been reduced after spraying, while the frequency of sound pressure is raised to above 20000Hz, greatly weakening the noise, However, some frequencies of secondary noise still need to be further silenced. We have installed a sound-absorbing cotton structure outside the expansion room, which is designed based on the spectrum of residual noise emitted by the pressure reducing body, to effectively absorb the residual noise. When the user installs according to the requirements, the sound volume can reach 30-42 decibels. Make it meet the requirements of industrial enterprise noise standards.

Silencers must be designed according to the requirements of various emission parameters in order to achieve significant noise reduction results. When ordering exhaust silencers, information must be provided:

(1) Steam emissions - low (T/h), pressure, temperature.

(2) Exhaust pipe diameter and wall thickness.

(3) The structure of the muffler - select composite and small hole types.

Manufacturing standards for exhaust muffler:

1. The design and manufacturing of silencers should meet the requirements of national and industry standards, regulations, and specifications.

2. The material, thickness, and processing technology of the muffler ensure the strength of the muffler.

3. The shell and overcurrent components of the muffler should be flat and smooth, and there should be no welding slag, cutting slag, or drilling chips left.

4. All steel components of the muffler should undergo rust removal pre-treatment during cutting and secondary coating, and the surface of stainless steel material should be degreased.

5. -: Integrated silencer - composite type for 10 years, stainless steel for 20 years.

6. The standard of the muffler shall be in accordance with the national standard and set in an open place.

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