本发明涉及一种橡胶磨粉机,包括磨粉室,动、定磨盘,主轴,机壳,送料装置,电动机及皮带传动机构,其特殊之处是:动磨盘由后壳、芯层、表层组成,主轴为空心轴且在其空心腔体内设有冷却水管路,主轴与冷却水管路之间形成环形回水路,芯层与后壳之间形成进水腔以及回水腔,芯层与表层之间形成冷却水循环腔,芯层上分别设有进 The invention relates to a rubber mill, which comprises a milling chamber, a movable grinding wheel, a fixed grinding wheel, a spindle, a casing, a feeding device, a motor and a belt transmission mechanism. The utility model is characterized in that the movable grinding wheel consists of a back shell, a core layer, , The main shaft is a hollow shaft and a cooling water pipe is arranged in the hollow cavity, an annular water return path is formed between the main shaft and the cooling water pipe, a water inlet cavity and a water return cavity are formed between the core layer and the back shell, the core layer and the surface layer Between the formation of cooling water circulation cavity, respectively, into the core layer