Composite exhausting evacuation silencer

Abstract

The invention discloses a composite exhausting evacuation silencer which is composed of an intake section, a noise elimination section and an exhausting section. The intake section is composed of a silencer cylinder, a first-stage silencing device, a second-stage silencing device and a fairing, wherein the first-stage silencing device includes a throttling pressure-reducing pipe, a small hole injection pipe and a tapered hole plate, the second-stage silencing device is a honeycomb resistive silencing section, the honeycomb resistive silencing section is formed by a plurality of silencing pieces which are vertically arranged, a bottom opening of the silencer cylinder is connected with the intake section, the intake section is formed by a conical increasing coupling and an intake straight tube, an exhaust section is connected to a top opening of the silencer cylinder, and the exhaust section is an exhaust bend with the inner wall provided with a layer of resistive sound absorbing material in an attached manner. The composite exhausting evacuation silencer comprehensively utilizes a plurality of silencing principles to perform noise reduction processing on the released air, and has the advantages of the large noise reduction amount, the wide noise elimination frequency bandwidth, the wide application range, more smooth airflow discharge and the like.

Description

technical field [0001] The invention belongs to the technical field of mufflers, and in particular relates to a composite exhaust and vent muffler. Background technique [0002] The high-pressure gas is exhausted and vented, and a very strong venting noise will be generated during this process. The reason is that the flow rate of gas ejected from the nozzle of the vent pipe is very high, and the ejected gas is quickly mixed with the surrounding air. During the mixing process, strong noise is emitted in the mainstream area. When the noise reaches 50 to 60 decibels, people feel uncomfortable. , affecting thinking and mental concentration; if it is higher than eight or ninety decibels, it will affect people's health: long-term (more than 10 years, working 8 hours a day) exposure to strong noise will also cause hearing loss or noise Sexual deafness, and even lead to certain diseases, affecting daily life. Among the various noise standards in our country, gas venting noise is a...

AI Technical Summary

Problems solved by technology

The reason is that the flow rate of gas ejected from the nozzle of the vent pipe is very high, and the ejected gas is quickly mixed with the surrounding air. During the mixing process, strong noise is emitted in the mainstream area. When the noise reaches 50 to 60 decibels, people feel uncomfortable. , affecting thinking and mental concentration; if it is higher than eight or ninety decibels, it will affect people's health: long-term (more than 10 years, working 8 hours a day) exposure to strong noise will also cause hearing loss or noise Sexual deafness, and even lead to certain diseases, affecting daily life

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