Screening machine capable of hierarchically grading tea leaves

The utility model belongs to the field of tea screening, and provides a screening machine capable of grading tea hierarchically, which comprises a box body, the three screening plates are assembled in the box body in an inclined manner and are used for grading and screening the tea leaves, and filter holes of the screening plates are sequentially reduced from top to bottom; the three vibrating mechanisms are assembled at the bottoms of the corresponding screening plates and used for shaking the screening plates; the three collecting mechanisms are all assembled on the side face of the box body and used for collecting the screened tea leaves; the collecting mechanism comprises a containing frame fixedly assembled on the side face of the box body, a collecting hopper is inserted into the containing frame, a handle is fixedly connected to the side face of the collecting hopper, a limiting groove used for sliding of the handle is formed in the side face of the containing frame, and a limiting assembly used for po