The utility model discloses a high-speed
powder mixer, which relates to the technical field of mixers, and comprises a rack, a support plate is arranged outside the rack, support pieces are arranged at the top of the support plate, a turnover shaft is rotatably arranged between the two support pieces, a
mixing tank body is arranged on the turnover shaft, and the
mixing tank body is provided with a plurality of stirring blades. A high-speed motor and a wall scraping motor are arranged outside the
mixing tank body, the high-speed motor is connected with a shear knife, cavities are formed in the two ends of the overturning shaft, a cable is arranged in the cavity in one end of the overturning shaft, a communicating
pipe is arranged in the cavity in the other end of the overturning shaft, and the communicating
pipe is connected with a
water pipe and an oil
pipe on the tank body. The supporting structures at the two ends greatly increase the structural strength of the overturning shaft, the stress condition of the overturning shaft is greatly improved, the
bearing capacity of the overturning shaft is increased, the abrasion and fatigue conditions of the bearings are improved, the service life of the bearings is prolonged, and the supporting structures at the two ends guarantee the stability of the whole equipment during high-speed operation.