High-density sieve for flour production

The utility model discloses a high-density screen for flour production. Relating to the technical field of sieve plates, the sieve plate comprises an upper sieve plate, a lower screen box is arrangedbelow the upper screen plate in parallel; the middle parts of the upper sieve plate and the lower sieve box are respectively provided with first sieve holes and second sieve holes in a rectangular array; a blocking frame is arranged on the upper surface of the upper sieve plate; upper mounting plates are symmetrically arranged on the upper surfaces of two end parts of the upper sieve plate; a mounting plate is arranged below the upper mounting plate; two double-thread screws are vertically arranged between the upper mounting plate and the lower mounting plate in a penetrating mode, nuts are arranged at the two ends of each double-thread screw in a matched mode, a rod body is vertically and fixedly arranged on the upper surface of the side, close to the lower screen box, of the lower mounting plate, the rod body se