Spiral tube drying rotary drum

The utility model belongs to the technical field of drying machinery and provides a spiral tube drying rotary drum, in particular to the spiral tube drying rotary drum which is applied to drying solid high-humidity bulk materials. An existing drying rotary drum mainly has the problems of being complex and unreasonable in structure, increasing cost and wasting heat energy. The spiral tube drying rotary drum is characterized in that a cold and hot air pipe provided with air jet holes and air jet supporting rods is inserted into a hollow pipe provided with heat dissipation holes to be formed in integration, and then a spiral rotary drum is formed after heat-absorbing pieces are sleeved outside the hollow pipe. The spiral rotary drum is connected with a rotary drum shaft and a large supporting rod, and then the spiral tube drying rotary drum is formed. The spiral tube drying rotary drum mainly has the advantages of simplifying the structure and process, reducing components and manufacturing and drying costs, faci