Nested adjustable airflow-assisted anti-blocking threshing cylinder

The invention discloses a nested adjustable airflow auxiliary anti-blocking threshing cylinder which comprises a cylinder rack, a threshing device and an airflow auxiliary device are connected to the cylinder rack, the threshing device is connected to the upper portion of the cylinder rack through a mounted bearing, and the airflow auxiliary threshing device is arranged outside the threshing cylinder. The airflow auxiliary device is fastened and connected to the roller rack through a bolt; the threshing device comprises a gap-adjustable concave grid, a diameter-adjustable rasp bar device, a spike tooth device and a threshing roller shaft, the threshing roller shaft is connected to the roller rack, the spike tooth device is embedded in the rasp bar device and connected to the threshing roller shaft, the rasp bar device and the airflow auxiliary device share a hydraulic air pump, and the threshing roller shaft is connected to the threshing roller shaft. The airflow auxiliary device comprises an air net, an air