Heat pipe type three-cylinder dryer

A heat pipe type three-cylinder drying machine comprises a heat pipe three-cylinder drying bin, roller paths, a gear ring, a three-way connector device, a discharging device, an exhaust device, a support, riding wheels and a driving device. The heat pipe three-cylinder drying bin comprises heating devices, a three-cylinder drying bin body and spiral blades. Heat energy carried by a medium carriesout heat conduction and heating on materials in the three-cylinder drying bin body through heat conduction pipes and heating pipes of the heating devices; heaters with heating strips conduct heat energy to a heat conduction working medium, the heat conduction working medium carries out heat conduction and heat exchange of liquid-vapor phase change in inner cavities of the pipes, and the heat energy is conducted to materials in a roller through the heating pipes for heat conduction and heating; and when a certain heating pipe is damaged to cause leakage, use of the whole three-cylinder drying bin body is not influenced