Spray gun and combustor

The invention discloses a spray gun and a burner, and particularly relates to the technical field of float glass melting furnaces. The spray gun comprises a fuel supply unit, a combustion-supporting medium supply unit and a gas output unit; the fuel supply unit is provided with at least two gas inlet passages for introducing different fuels respectively; the combustion-supporting medium supply unit is connected with the fuel supply unit and is provided with a combustion-supporting gas passage for introducing combustion-supporting gas; the gas output unit is connected with the combustion-supporting medium supply unit and provided with a mixed gas channel communicating with the gas inlet channel and the combustion-supporting gas channel, and the output end of the mixed gas channel is suitable for stretching into the kiln so as to be used for spraying mixed gas to the kiln. According to the combustor spray gun, multi-fuel mixed combustion is achieved, high-purity oxygen is used as a combustion-supporting medium,