Activated carbon spray gun

The activated carbon spray gun comprises a gun barrel, a heat insulation tank is installed on the left side face of a first flange, a bearing and a sealing ring are connected to the left side of the surface of the gun barrel in a sleeved mode, a conical pipe is arranged at the left end of the gun barrel, a cylinder is connected to the outer ring of the bearing in a sleeved mode, a plurality of sets of flow guide plates are arranged in the cylinder, and a connecting pipe is arranged on the left side face of the cylinder. Activated carbon is sprayed out through the large-diameter end of the horn-shaped spray head, the spraying coverage area is increased, heat insulation is conducted on the gun barrel through the rock wool and the heat insulation cotton, and the situation that workers are scalded is avoided; the cylinder can be rotated by 360 degrees by unscrewing the T-shaped bolt, so that the direction of the trumpet-shaped spray head is changed, the spraying range of the activated carbon is expanded, and the