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Peanut grading machine

The invention discloses a peanut grading machine and belongs to the technical field of peanut grading equipment. The peanut grading machine comprises a rack, a peanut feeding device, a peanut gradingdevice and peanut collection devices. The peanut feeding device comprises a feeding chute, suspension arms and a driving structure. The peanut grading device comprises a peanut grading channel and a peanut grading strip hole, wherein the peanut grading strip hole is formed in the lower end of the peanut grading channel. The peanut grading device specifically structurally comprises two grading rollers and a grading roller driving device, wherein the two grading rollers are arranged symmetrically in the left-right direction. The grading roller driving device drives the two grading rollers to rotate in opposite directions, so that inner side arc surfaces of the upper half parts of the two grading rollers rotate from inside to outside. A gap formed between the two grading rollers which are combined together serves as the peanut grading strip hole. The peanut grading strip hole is composed of peanut grading strip hole sections of different widths. Each peanut collection device is arranged at the lower end of the corresponding peanut grading strip hole section. The peanut grading machine has the advantages that grading is conducted precisely, the universality is great, and grading holesare not likely to be blocked.
Owner:HEBEI AGRICULTURAL UNIV.
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