Aiming at the problems of poor cleaning effect and high damage rate of camellia oleifera seeds in the existing camellia oleifera seed shell cleaning machine,a double-roller camellia oleifera seed shell cleaning machine using the toothed smooth roller cleaning principle was designed.The physical characteristics of camellia oleifera seeds and shells were studied,the arrangement of roller groups in the cleaning device,the number of toothed roller groups,and the tooth shape and diameter of the toothed rollers,which are key components of cleaning,were designed respectively.The force on the camellia oleifera shell during the cleaning state was analyzed.In order to verify whether the double-roller camellia ole-ifera seed shell cleaning machine reached the expected design goal,an orthogonal experiment with three factors and three levels was designed.The cleaning gap,roller shaft speed,and feeding speed were selected as the experimental factors,and the camellia oleifera seed breakage rate and cleaning rate were used as evaluation indicators to conduct field tests on the cleaning machine.The test results show that when the cleaning gap is 3.13 mm,the rotation speed of the shaft and roller is 298.25 r/min,and the feed amount is 1.51 t/h,the double-roller camellia oleifera seed shell cleaning machine obtains the best cleaning effect.At this time,the breakage rate of camellia oleifera seeds is 3.30％,and the cleaning rate is 96.79％.
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