Fine screen separator with multiple stages of screens

The utility model discloses a fine screen separator with multiple stages of screens, which is provided with a rack, a support plate is fixed at the top of the rack, and vibration motors are equidistantly mounted above the support plate through bolts; one ends of the first sieve plate, the second sieve plate and the third sieve plate are movably connected with the supporting plate, and the other ends of the first sieve plate, the second sieve plate and the third sieve plate are connected with a supporting box through connecting blocks; a discharging channel is formed in the top of the supporting box, a guide block is fixed in the supporting box, and a discharging pipe is arranged at the bottom of the supporting box; the movable rod movably penetrates through the end of the supporting box, a movable block is movably arranged in the position, at the bottom of the movable rod, of the supporting box, and a connecting rod is fixed to the lower end face of the movable block. According to the fine screening machine w