Assembly type micro-hole plate silencer

Abstract

The invention relates to an assembly type micro-hole plate silencer. The assembly type micro-hole plate silencer comprises a silencer body, and the two ends of the silencer body are connected with pipes through flanges; a silencing sheet and a micro-hole plate sound absorption structure are arranged in a rectangular channel of the silencer body; the silencing sheet is arranged along the central axis of the rectangular channel and comprises micro-hole plates located on the upper side and the lower side, a steel plate in the middle and a plurality of separating plates arranged along the axis of the rectangular channel; the micro-hole plate sound absorption structure comprises a single-layer sound absorption structure and a dual-layer sound absorption structure, the dual-layer sound absorption structure comprises micro-hole plates located on the inner side and the outer side, and a plurality of first separating plates and a plurality of second separating plates are installed between the two micro-hole plates; the single-layer sound absorption structure comprises a single-layer micro-hole plate, a plurality of third separating plates arranged in the axial direction of the rectangular channel and a plurality of fourth separating plates arranged in the horizontal direction are installed between the micro-hole plate and an outer side plate of the silencer body. The assembly type micro-hole plate silencer can effectively absorb wide-band sounds, in particular to low and medium frequency sounds, and is suitable for conducting silencing in the high temperature, high flow rate and dust-free environments.

Description

technical field [0001] The invention relates to the technical field of fiber-free ventilation and noise reduction. Background technique [0002] The muffler is the main measure to control the noise of the ventilation system. At present, the fiber resistive muffler is widely used, which has a good noise reduction effect on the medium and high frequencies, and is only suitable for the environment of the medium and low speed airflow. It will blow away the fiber material in the muffler, pollute the environment, and affect the acoustic performance of the muffler. In addition, due to the rough surface of the fiber material, the air flow resistance of the resistive muffler is relatively large. The microporous plate muffler is composed of a thin plate with micropores, does not contain any fiber materials, has a smooth inner surface, and has low airflow resistance. It can be used in harsh environments such as high temperature and high airflow, and has good sound absorption character...

AI Technical Summary

Problems solved by technology

[0003] At present, there are some product models of microporous plate mufflers in China (such as WX type microporous plate muffler, WW type microporous plate muffler elbow, etc.), but after testing, most of the muffler products have not been able to play their due effect

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