Fan blade structure for high-speed turbine airflow classifier

The utility model relates to the technical field of fan blade structures, in particular to a fan blade structure for a high-speed turbine airflow classifier, which comprises a rotating block, a connecting rod is fixedly arranged on one side of the rotating block, a large turntable is fixedly arranged at one end of the connecting rod, a long rod is fixedly arranged on one side of the rotating block, and a small turntable is fixedly arranged at one end of the long rod. A conical cap is fixedly arranged at one end of the long rod, a connecting piece is fixedly arranged on one side of the small rotating disc, and inner fan blades are fixedly arranged at one end of the connecting piece. The outer fan blades are integrally inserted into the clamping grooves, the clamping blocks can clamp the concave blocks on the two sides of the connecting blocks under the action of the springs and the telescopic rods in the clamping grooves, the concave blocks cannot fall off under high-speed rotation, the outer fan blades can be