Mixing device

The utility model discloses a material mixing device, which comprises an automatic blanking device, a material mixing and stirring device and the like, the blanking amount of the automatic blanking device is accurately controlled by a spiral conveying shaft in a blanking box, and the material mixing and stirring device comprises a first material mixing chamber and a second material mixing chamber. Raw materials are respectively stirred in the horizontal direction and the vertical direction, uniform mixing of the raw materials can be realized, the phenomenon of layering of coarse and fine aggregate is avoided, scrapers driven by speed reducers are arranged at the bottoms of the first mixing chamber and the second mixing chamber, so that no residue is left when a mixture is discharged, and through strain blocks mounted at the bottoms of the mixing chambers, the uniformity of the mixture is improved. A spiral conveying shaft and a discharging opening in the discharging box can be controlled in a linkage mode thr