Air volume adjusting device of rice husking machine

The air volume adjusting device of the rice mill comprises a supporting plate, an air channel plate, an adjusting plate and a bolt, the air channel plate is fixedly arranged on the supporting plate, a secondary air inlet is formed in the supporting plate, a baffle is arranged at the end of the supporting plate, the baffle and the air channel plate jointly define an air cavity, the adjusting plate is arranged in the air cavity, and the bolt is arranged on the adjusting plate. The air cavity is divided into a first air path and a second air path by the adjusting plate, and the first air path and the second air path are respectively communicated with the secondary air inlet; rotating shafts are arranged at the two ends of the adjusting plate and connected into rotating holes formed in the air duct plate, connecting holes are formed in the air duct plate, bolts penetrate through the connecting holes, nuts are connected to the bolts, connecting flanges are arranged at the bottom of the adjusting plate and connecte