Drum type hot-blast stove

The invention discloses a drum type hot-blast stove which is characterized in that heat exchange tubes of heat exchangers of the stove are of a structure that drums are circumferentially and uniformly distributed, the drums rotate and roll at low speed when in use, the heat exchange tubes are uniformly heated, dust does not accumulate on the surfaces, flue gas channels are smooth, the drum type hot-blast stove cannot be burned out due to too high temperature and cannot be eroded due to too low temperature, and biofuel such as coal, waste crops and the like can be used as energy sources. Air ducts and flues are of reverse flow structures, i.e. cold air flows from a low-temperature area to a high-temperature area, so that heat which is released by fuel burning is effectively switched; left and right bellows can be freely removed, so as to facilitate the maintenance of the heat exchangers in the stove; second high-temperature air supply is adopted in a hearth, so as to guarantee sufficient burning of the fuel; the drum type hot-blast stove is mainly used for drying or heating products, heating for enterprise units and heating for production and cultivation and has the using effects of energy conservation, high efficiency and durability.