Grading screening device for processing freeze-dried coffee powder

The utility model relates to the technical field of coffee processing, and discloses a grading screening device for processing freeze-dried coffee powder, the upper surfaces of a first screening frame, a second screening frame and a third screening frame are all provided with screening grooves, and the screening grooves are all internally provided with screening nets in a sliding mode; electric telescopic rods are symmetrically arranged in the fixing grooves, the telescopic ends of the electric telescopic rods are connected with cleaning plates, fixing plates are symmetrically mounted on the two sides of the first screening frame, the second screening frame and the third screening frame, a recycling box is mounted below the third screening frame, and mounting plates are connected to the two sides of the recycling box in a clamped mode. A first connecting base is arranged on one side of the mounting plate, and a connecting plate is mounted at one end of the first connecting base. And a clamping plate arranged