Wall flow type inner circulation continuous sauting machine

The utility model provides a wall flow-type internal-circulation continuous roasting machine which belongs to the technical field of nut roasting equipment and aims to solve the problems of high heat loss and large temperature drop during the sand return process. The wall flow-type internal-cycle continuous roasting machine comprises a machine frame; an inner drum and an outer drum, which are sleeved together; a motor and a heat source. The inner drum and the outer drum in the sleeved arrangement are rested on the machine in a rotary manner. The heat source is arranged on the outer wall of the outer drum correspondingly. The motor is connected with the inner drum and the outer drum in a transmission manner. Spiral wings are arranged on the inner walls of the inner drum and the outer drum respectively and rotate in the opposite directions. A screen drum is arranged at the tail end of the inner drum, and a feed drum is arranged at the feed end of the inner drum. A deflector plate is additionally arranged in the