Flue gas induced draft device for wet aluminum scrap remelting melting furnace

CN122305815APending Publication Date: 2026-06-30SHENYANG SHILONG ELECTROMECHANICAL EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-08
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The existing flue gas induced draft device for melting furnaces used for remelting wet aluminum scraps cannot quickly and reliably block the spread of flames in the event of an explosion, resulting in damage to the fan and posing a safety hazard.

Method used

A smoke exhaust device including a protective mechanism was designed. It utilizes the physical characteristics of the explosion shock wave to quickly block the spread of flames through mechanical linkage. The protective mechanism includes a fireproof box, a slide, a guide rod, a support frame, a sensing component, a driving component, and an actuating component. It uses mechanical energy conversion to achieve rapid closure of the smoke duct.

Benefits of technology

It enables rapid and reliable blocking of flames and shock waves in high temperature and high humidity environments, protecting the fan, reducing maintenance costs, and improving the safety and reliability of the device.

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Abstract

This invention relates to the field of wet aluminum scrap melting furnace technology, specifically disclosing a flue gas induced draft device for wet aluminum scrap remelting furnaces. The device includes a flue pipe, a fan, and a protective mechanism. The fan is located at the rear of the flue pipe, and the protective mechanism is located at the front of the flue pipe. The protective mechanism includes a fireproof box, a sliding groove, a first guide rod, a support frame, a first limiting groove, a second limiting groove, an ejection groove, a sensing component, a driving component, and an execution component. This device requires no external power supply or control system and has the outstanding advantages of fast response speed, strong anti-interference ability, and stable operation in high-temperature, high-humidity, and dusty environments. Furthermore, through pre-stored energy ejection shutdown and manual reset design, it addresses the engineering requirements of rapid interruption and repeated use, significantly improving the safety and reliability of the flue gas induced draft device for wet aluminum scrap remelting furnaces.
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