Tobacco shred screening device

The utility model discloses a tobacco shred screening device and belongs to the technical field of cigarette making machines. The tobacco shred screening device comprises a rack, a sieving vibration trough, and a counter-balanced carriage performing reciprocating movement, wherein the sieving vibration trough is arranged on the rack; the sieving vibration trough, the counter-balanced carriage and the rack are in hinge connection through a plurality of support arm pieces; a bar-shaped vibration sieve is mounted in the sieving vibration trough, and is formed by fixing a plurality of longitudinally arranged bar-shaped ribs; transverse brace rods are fixed below the bar-shaped ribs; and the interval between every two adjacent bar-shaped ribs of the bar-shaped vibration sieve is smaller than the diameter of a cigarette. The tobacco shred screening device can effectively separate short shreds from long shreds in the tobacco shreds, simultaneously, the tobacco shreds are not hung on the bar-shaped vibration sieve, a