Flexible tobacco winnowing device

The utility model discloses a tobacco flexible winnowing device which comprises a weighing belt, a feeding and material uniformizing vibration groove is formed below the right portion of the weighing belt, the right portion of the feeding and material uniformizing vibration groove is inserted into the left lower section of a primary winnowing box, and a side inlet air providing device is arranged on the lower portion of the feeding and material uniformizing vibration groove. A lower inlet air supply device is arranged below the primary winnowing box, a lower inlet air inlet is formed in the bottom of the primary winnowing box, the secondary separating box is communicated with the lower inlet air inlet, a primary sorting object outlet in the bottom of the secondary separating box is right opposite to the right portion of the first discharging belt, the first discharging belt is communicated with the secondary winnowing box, and a secondary sorting object outlet in the bottom of the secondary separating box is