Inverted flame type flame-isolating gas decoration firing furnace

The utility model discloses an inverted flame type muffle gas decoration firing furnace. The furnace comprises a furnace body and a metal liner, the metal inner container is located in the furnace body. Conveying roller ways are arranged on the lower portions of the interiors of the furnace body and the metal inner container. The conveying roller way penetrates through the furnace body and the metal inner container; a cavity is formed between the furnace body and the metal inner container. And a plurality of combustion cavities are formed in the periphery of the cavity, combustors are installed in the combustion cavities, gas pipes are fixedly connected to one sides of the combustors, an exhaust channel is fixedly connected to the lower portion of the metal inner container, the exhaust channel is located below the conveying roller way, and an exhaust pipe is fixedly connected to the lower portion of the exhaust channel. The waste heat recovery device is simple in structure, capable ofimproving heating efficie