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

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