The invention relates to a vertical modified stir ball-milling reactor for reinforcing
polysaccharide polymers, and a stirring shaft is driven by a drive unit through a
coupling. The reactor further comprises a cylinder cover plate, a
grinding inner cylinder, a lining plate, a funnel type material feeding port, a material discharging port and
grinding balls. A stirring blade set composed of inclined plate blades and an S-shaped
spiral blade is mounted on the stirring shaft, the inclined plate blades are mounted on the stirring shaft in parallel, and the S-shaped
spiral blade is vertically mounted on the stirring shaft; and a plurality of through holes for
grinding balls in the grinding inner cylinder to pass through are arranged on the inclined plate blades. According to the reactor, the stirring blade set is added, so that materials can be mixed evenly, and accordingly, the production efficiency is improved. Simultaneously, the stirring shaft and the S-shaped
spiral blade are manufactured into hollow structures, and fed cooling substances are helpful for keeping the temperature to be uniform and the constant-temperature
reaction field; and the bottom of grinding inner cylinder is hemispherical, so that grinding dead angles are avoided.