Asphalt pavement old material thermal regeneration device

The utility model relates to the technical field of road building materials, in particular to an asphalt pavement old material thermal regeneration device which comprises a regeneration drying barrel, an RAP material temporary storage bin, a material changing mechanism, a microwave heating box, a material distributing channel and a stirring cylinder, the RAP material temporary storage bin is installed at a discharging port of the regeneration drying barrel, and the material changing mechanism comprises a first material guiding pipe, a second material guiding pipe and a material changing turning plate; the first material guiding pipe is communicated with a discharging port of the RAP material temporary storage bin and a feeding port of the microwave heating box, one end of the second material guiding pipe is communicated with the first material guiding pipe, the other end of the second material guiding pipe is provided with the material distributing channel, and the material changing turning plate is rotationa