This utility model discloses an automatic separation and collection device for heavy debris in an
airflow conveying
system, relating to the technical field of
airflow separation equipment. The separation body includes a cylindrical cavity with a conical guide hood at the top. A spiral feed plate is located between the outer side of the guide hood and the inner wall of the cavity. A feed
pipe is located on one side of the upper part of the cavity, a
discharge pipe is located at the top of the cavity, and a
discharge port is located at the bottom of the cavity. Corn fibers, being lightweight and highly susceptible to
airflow, move upwards more easily with the airflow, while heavy debris, due to gravity and
centrifugal force, tends to sink closer to the inner wall of the cavity, significantly improving the initial separation efficiency and reducing the mutual entanglement of corn fibers and heavy debris.