Abstract: The arc welding smoke exhaust and dust removal system used in the automobile welding workshop is easy to catch fire due to the working environment. After a fire, it is difficult to eliminate the fire source in time due to the closed structure of the smoke exhaust and dust removal system, which brings great economic losses and potential safety hazards to the production and operation of the enterprise. In this paper, the two difficult problems of easy ignition and difficult fire extinguishing of the traditional arc welding smoke and dust removal system are analyzed and studied. With reference to the latest achievements in the field of fire prevention and fire extinguishing in China, the anti ignition structure of the traditional smoke and dust removal system is technically improved. At the same time, a new technology of adding automatic fire extinguishing structure to the original smoke and dust removal system is designed. The upgraded and improved fire prevention structure can further reduce the fire probability of the arc welding smoke exhaust and dust removal system, and the automatic fire extinguishing system can find the fire source in time after a fire, so as to realize automatic fire extinguishing and eliminate the fire source.

Key words: Arc welding smoke and dust removal system; Fire prevention and extinguishing; Spark elimination; Automatic fire extinguishing; Automobile arc welding

摘要： 汽车焊接车间采用的弧焊排烟除尘系统由于工作环境易发生火灾，发生火灾后由于排 烟除尘系统结构封闭，也难以及时消除火源，给企业生产运营带来很大的经济损失和安全隐 患。文章对传统的弧焊排烟除尘系统易着火和难灭火两大难题进行了分析和研究，参考国内 防火、灭火行业领域的最新成果，对传统排烟除尘系统的防着火结构进行了技术改进，同时 在原排烟除尘系统中设计增加自动灭火结构的新技术。升级改进后的防着火结构能够进一步 降低弧焊排烟除尘系统发生着火的概率，自动灭火系统在发生火灾后能够及时发现火源，实 现自动灭火，消除火源。

关键词: 弧焊排烟除尘系统；防灭火；火花消除；自动灭火；汽车焊接