Fecha de publicación: 24/12/2021 Fuente: Wipo Tobacco Agriculture The utility model discloses a layering automatic circulation air-curing machine for cigar tobacco leaves. The layering automatic circulation air-curing machine comprises a tobacco leaf layer-changing frame, a tobacco leaf circulation air-curing frame and an electrical controller which is installed on the lower portion of the tobacco leaf circulation air-curing frame and controls the tobacco leaf layer-changing frame and the tobacco leaf circulation air-curing frame to operate automatically. The electrical controller controls the tobacco leaf circulating airing frame to enable the tobacco stems to move on the tobacco leaf circulating airing frame in a circulating mode, controls the tobacco leaf layer changing frame to adjust the distance between the tobacco leaf layer changing frame and the tobacco leaf circulating airing frame, and enables the tobacco stems to be placed on or taken down from the tobacco leaf circulating airing frame. The air-curing machine has the beneficial effects that by adopting the air-curing machine, the air-curing number of cigar tobacco leaves is increased as much as possible in a limited space, the cigar tobacco leaves are independently and circularly air-cured in a layered manner in the vertical direction, good ventilation and air-curing with different humidity among the tobacco leaves are ensured, and safety accidents caused by manual layer changing are avoided. The airing time of the cigar tobacco leaves is shortened, the quality of the aired cigar tobacco leaves is good, and the working efficiency is improved.