Mixing device for producing and processing compound fertilizer containing modified polyaspartic acid

The invention relates to a mixing device for producing and processing a compound fertilizer containing modified polyaspartic acid. The mixing device comprises a roller, and a solid material input assembly and a liquid material input assembly which are arranged on the roller, the solid material input assembly comprises a plurality of discharging pipes arranged at the top of the roller and sealing assemblies arranged in the discharging pipes. The stirring assembly is driven by the power assembly to fully stir solid materials and liquid materials conveyed into the stirring cavity, the pushing assembly can be driven to operate to push and open the sealing plate while the lead screw rotates, the discharging pipe intermittently conveys the solid materials into the stirring cavity, the rotating plate can be driven to rotate, and the stirring efficiency is improved. Materials are intermittently conveyed into the crushing cavity, sufficient time is reserved for stirring and mixing of the materials in the stirring cavi