Preheating and loosing integrated screw conveyer

The utility model discloses a preheating and loosening screw conveying unity machine, which comprises a screw conveying shaft, a transmission device drivingly connected with the screw conveying shaft and a screw cylinder, wherein, the front-section screw of the screw conveying shaft is a mass screw with a crushing device, while the screw of the other section is a heating screw. The machine has the advantages that a preheating feeding conveying machine realizes the functions of a loosening screw conveying machine, a preheating screw conveying machine and a feeding screw conveying machine in a heating area of an ordinary disc typed heat dispersion system, which not only greatly saves the occupied area of the heating area of the ordinary disc typed heat dispersion system, but also saves the power of a motor in the system equipment; a heat insulation layer is arranged between the screw cylinder and an outer shell of the preheating feeding screw conveying machine, which improves the service efficiency of steam; mo