What are the principles of using a vacuum pump silencer? Vacuum pump silencer/muffler is a device used to reduce exhaust noise of vacuum pumps. The vacuum pump exhaust muffler is developed based on the principle of resistance, spray, and resistance composite noise reduction. It has the advantages of large noise reduction, small volume, light weight, stainless steel manufacturing of the noise reduction cylinder, low corrosion resistance, and convenient installation.
The vacuum pump exhaust muffler is mainly used for effective noise reduction of steam emissions from thermal equipment such as boilers and steam turbines in the power generation department. It is also widely used for noise reduction of boiler steam emissions and other gas emissions in industries such as petroleum, chemical, metallurgical, and textile.
Currently, in order to suppress the noise emitted by high-pressure airflow, there are various types of mufflers in the world, most of which use multi-stage throttling to reduce pressure. Due to their complex structure, large weight, and difficulty in maintenance, their application range is limited. High pressure steam enters the pressure reducing body after passing through a flow control process in the muffler, and after a large volume expansion, forms low steam and is then sprayed out.
During this process, the internal energy of the airflow is partially converted into a certain frequency of sound energy, which greatly weakens the noise. In a jet and mixed flow silencing shell, 2-4 energy dissipation and sound suppression inner tanks are centrally arranged, and the inner shells can move vertically and horizontally to absorb the thermal expansion of the exhaust pipeline. In addition, the vacuum pump silencer is designed with a double-layer structure sound barrier, It is designed based on the spectral characteristics of residual noise emitted by the pressure reducing body to effectively absorb residual noise. After the user installs according to the requirements, the total noise reduction should reach 36-45 decibels.
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