An exhaust filtration and silencer for chemical equipment pipelines

CN224433845UActive Publication Date: 2026-06-30张静

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: 张静
Filing Date: 2025-09-11
Publication Date: 2026-06-30

AI Technical Summary

Technical Problem

Existing noise reduction devices for chemical pipelines cannot effectively control low-frequency noise, especially the low-frequency noise generated by compressor pulsation and valve opening and closing. Traditional baffle-type sound-absorbing cotton has limited effectiveness against medium and high-frequency noise.

Method used

It adopts a multi-stage noise reduction structure design, including a V-shaped deflector, an arc-shaped deflector and a Helmholtz resonator, to treat low-frequency, mid-frequency and high-frequency noise in the airflow through flow diversion, rotational deceleration and resonance absorption. The components are designed to be detachable to adapt to chemical environments.

Benefits of technology

It achieves systematic processing of low-frequency, mid-frequency, and high-frequency noise, significantly improves noise reduction efficiency, adapts to corrosive gases and high-temperature working conditions in chemical environments, and has good noise reduction performance and easy maintenance.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses an exhaust filtration and silencing device for chemical equipment pipelines, including a gas supply pipe, a diversion pipe detachably installed at the upper end of the gas supply pipe, a buffer pipe detachably installed at the upper end of the diversion pipe, and an output pipe detachably installed at the upper end of the buffer pipe. A V-shaped flow guide structure is installed inside the diversion pipe, and an arc-shaped flow guide plate is spirally arranged on the inner circumference of the buffer pipe. A Helmholtz resonator is fixedly fitted on the outer side of the output pipe. This utility model effectively solves the problem of low-frequency noise control in traditional silencers through multi-stage noise reduction structure design and fluid dynamics optimization. This device not only has good noise reduction performance, but also has the advantages of stable structure, easy maintenance, and strong adaptability, improving overall noise reduction efficiency. It is suitable for corrosive gases and high-temperature conditions commonly found in chemical environments.

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