Energy-saving device of vertical mill for cement production

The utility model relates to a cement production vertical mill energy-saving device which comprises a vertical mill machine, a pretreatment bin is arranged at the top of the vertical mill machine, a supporting ring is fixedly arranged in the pretreatment bin, a centrifugal cylinder is rotationally arranged in the supporting ring, and a plurality of centrifugal grooves are formed in the side wall of the centrifugal cylinder. The driving assembly drives the gear ring to rotate, the gear ring drives the centrifugal barrel to rotate, small materials are thrown out of the centrifugal groove, large materials continuously impact the inner wall of the centrifugal barrel, the crushing effect can be improved through the crushing hemispheres, and material particles thrown out of the centrifugal barrel fall onto the filtering plate; and meanwhile, the pull rope assembly pulls the rolling wheel set to roll the material particles on the filter plate again, so that the situation that the particle size difference of the mate