Counter-flow type hot mix plant regeneration drying roller

The utility model relates to a reverse-flow type hot mix plant regeneration drying drum, which comprises a drum body, and a feeding end and a discharging end which are oppositely arranged at two ends of the drum body, and is characterized by further comprising a self-cleaning material guide area, a self-cleaning full material curtain area and a coarse material curtain area which are sequentially arranged inside the drum body along the direction from the feeding end to the discharging end, the self-cleaning material guiding area guides the regenerated material to move in the direction of the discharging end and comprises a plurality of material guiding blade sets arranged in the flowing direction of the regenerated material, each material guiding blade set comprises a plurality of material guiding blades circumferentially distributed in the cylinder, the material guiding blades and the axis of the cylinder are obliquely arranged, and the multiple material guiding blades on every two adjacent material guiding b