Vertical cement grinding device

The utility model discloses a vertical cement grinding device, relates to the field of grinding machines, and adopts the technical scheme. The device comprises a crushing bin, a feeding port is formedin the upper top of the crushing bin, a discharging port is formed in the bottom of the crushing bin, and the crushing bin internally comprises a crushing bin body and a screening part; the crushingbin comprises a pair of grinding rollers which rotate relatively, and friction layers are arranged on the outer circumferential surfaces of the grinding rollers; the screening part comprises a fluctuating plate and a screen; the fluctuating plate is horizontally and rotationally matched in the crushing bin; the fluctuating plate is driven by a driving motor; a plurality of through holes are distributed in the fluctuating plate; a plurality of protruding strips are arranged on the upper surface of the fluctuating plate in a radial radiation mode, the screen is horizontally arranged below the fluctuating plate, stone can