Material lifting device for blueberry picking

The material lifting device comprises a screening mechanism and a lifting mechanism, the lifting mechanism and the screening mechanism are connected end to end, and the screening mechanism comprises a first rack, a first driving unit, a chain wheel, a chain and a plurality of conveying rollers. The lifting mechanism comprises a second rack, a second driving unit, a roller and a conveying belt, and a plurality of baffles are arranged on the surface of the conveying belt at intervals. When the material lifting device conveys blueberry fruits, branches, leaves and other impurities mixed in the blueberry fruits are filtered out through the screening mechanism and discharged through the guide groove and the discharge port in the bottom, and then the blueberry fruits fall onto the lifting mechanism and are lifted to weighing and packaging equipment through the lifting mechanism for subsequent weighing and packaging work. And compared with a traditional manual sorting mode, the screening efficiency of branches and l