Building material processing device

The invention relates to the technical field of building material equipment, in particular to a building material processing device. The building material processing device comprises a supporting frame; the supporting frame is fixedly connected with a stirring cylinder; a material discharging port is formed at the bottom of the stirring cylinder; a rotating shaft is coaxially arranged in the stirring cylinder; a driving unit for driving the rotating shaft to rotate is arranged on the stirring cylinder; the rotating shaft comprises an upper rotating shaft and a lower rotating shaft which are mutually linked; the upper rotating shaft is fixedly connected with an upper spiral sheet; the lower rotating shaft is fixedly connected with a lower spiral sheet; a reversing mechanism for changing the relative rotation direction of the upper rotating shaft and the lower rotating shaft is arranged between the upper rotating shaft and the lower rotating shaft; and the lower rotating shaft is close to the material dischargi