Efficient raw material grinding and screening device

The utility model belongs to the technical field of grinding and screening equipment, and particularly relates to an efficient raw material grinding and screening device which comprises a grinding box and a screening block, the grinding box is fixed above a discharging hopper in a welding connection mode and is of a cuboid cavity structure, and a fixing pile is fixed at the upper end of the grinding box; the screening block is installed above the supporting box in a clamping mode, an inclined material sliding plate is arranged in the screening block, a primary dense filter screen and a secondary screen are arranged at the tail end of the material sliding plate, an inclined material sliding plate is arranged between the primary dense filter screen and the secondary screen, screening sliding plates are arranged below the primary dense filter screen and the secondary screen, and the screening sliding plates are arranged below the primary dense filter screen and the secondary screen. Two limiting clamping blocks