Blade dismounting device of tobacco leaf threshing machine

A blade dismounting device of a tobacco leaf threshing machine comprises a fixed pulling knife sleeve and a fixed plate, the fixed plate perpendicular to the fixed pulling knife sleeve is arranged on one side of the top of the fixed pulling knife sleeve, an opening is formed in the bottom of the fixed pulling knife sleeve, a locking bolt penetrating through the fixed pulling knife sleeve is arranged on one side of the fixed pulling knife sleeve, and a jacking threaded column perpendicularly penetrates through the fixed plate. Threads of the jacking threaded column are meshed with threads of the portion penetrating through the fixing plate, the jacking threaded column is parallel to the fixed pulling tool sleeve, and a rotating flange used for rotating the jacking threaded column is fixed to the portion, away from the fixed pulling tool sleeve, of the jacking threaded column. The unclamping device is simple in structure and low in processing and manufacturing cost, the unclamping blades can be pulled out from