Argon local discharging device

The utility model discloses an argon local discharging device. The argon arc welding device is characterized by comprising a gas guide pipe for conducting argon, a gas collecting hood is connected tothe outlet end of the gas guide pipe, the gas collecting hood is arranged on the reverse side of a welding part during welding, a gas valve for controlling gas conduction is arranged on the gas guidepipe, and the gas collecting hood is connected to the gas guide pipe through a corrugated pipe. The argon local discharging device is simple in structure, convenient to operate, proper in protection and good in using effect. According to actual welding requirements, a middle gas valve can be opened to effectively protect a welding part, and meanwhile, argon pressure can be adjusted, argon flow canbe controlled, and proper gas protection can be performed on the welding part. Therefore, the welding defect caused by the fact that argon protection is not in place is overcome, the welding qualityof the colored tube is impro