Heat pipe type roller dryer

The invention discloses a heat pipe type roller dryer which comprises a roller drying cabin, a raceway, a gear ring, a three-way connection device, a discharging device, an exhauster, a riding wheel and a driving device. Thermal energy carried by a medium is conducted to and heats material in the roller through a heat conduction pipe and heating pipes of a heating device; the radiating area of a heater provided with a heater strip of a heating sealing head is increased by 8-35 times; the heater of the heating sealing head conducts thermal energy to a heating conducting working medium; the heating conducting working medium carries out heat conduction and exchange of liquid-vapor phase change in a pipe cavity; the thermal energy is conducted to material in the roller through the heating pipes for heat conduction and heating; the heating pipes in the rotary roller drying cabin conduct heat to the material; the heating pipes rotatably crossed with each other and having high density increase the collision contact