Hoop for clamping spray gun body and spray gun head of Ausmelt furnace during welding

A hoop for clamping a spray gun body and a spray gun head of an Ausmelt furnace during welding is formed by two semicircular clamping pieces. A rotating shaft is welded to one end of one clamping piece and one end of the other clamping piece, two through holes are formed in the other end of each clamping piece through welding, and the two clamping pieces are connected together through the rotating shaft; the clamping pieces can be spread out or closed up around the rotating shaft, and the two clamping pieces are respectively provided with a welded window. The hoop is simple in structure, the spray gun body and the gun head can be quickly connected together, and the gun head and the spray gun body can be connected in a straight line and are not prone to deformation during welding; replacement time for the gun head is saved, labor intensity is relieved, work continuity of the Ausmelt furnace is improved, and production efficiency is improved.