A gaseous spray gun that is used for metallurgical stove molten bath to jet

The utility model provides a gaseous spray gun that is used for metallurgical stove molten bath to jet, belongs to the metallurgical equipment field. The spray gun includes gas injection pipe, condenser tube, reducing pipe, bulkhead and breakwater, reducing pipe self -blowing blows the cross -section that the gas flow advances orientation to the orientation that flows out and reduces gradually, and the gas injection pipe runs through through the reducing pipe, and the bulkhead setting forms the overflow mouth at the front end of reducing pipe at the breakwater upper shed. The advantage lies in: the outside water pressure in guarantee spray gun top, the cooling capacity is strong, can disect insertion slag district to improve the suitability of spray gun, prolonged life. 种用于冶金炉熔池喷吹的气体喷枪，属于冶金设备领域。喷枪包括气体喷吹管、冷却水管、变径圆管、堵头板和挡水板；变径圆管自喷吹气体流进方向至流出方向的截面逐渐减小，气体喷吹管贯穿通过变径圆管，堵头板设置在变径圆管的前端，在挡水板上开口形成溢流口。优点在于：保障喷枪顶端外部水压，冷却能力强，能直接插入熔渣区，从而提高了喷枪的适用性，延长了使用寿命。