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Design and Test of Discrete Element-Based Separation Roller Potato–Soil Separation Device

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  • Xinwu Du

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China
    Longmen Laboratory, Luoyang 471000, China
    Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of Henan Province, Luoyang 471003, China)

  • Jin Liu

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

  • Yueyun Zhao

    (Longmen Laboratory, Luoyang 471000, China)

  • Chenglin Zhang

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

  • Xiaoxuan Zhang

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

  • Yanshuai Wang

    (College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471003, China)

Abstract

To address the problems of low bright rates and high rates of potato injuries, a left and right-hand rotation combination of potato–soil separation devices was developed. Its overall structure and working principle were introduced. A Texture Analyzer and pressure sensor were used to measure the force threshold of different varieties of potatoes. A discrete element model of separation rollers and potatoes was established. The collision characteristics of potatoes were analyzed using the device inclination angle, rotational speed, and the center distance of the separation rollers as test factors. A field trial was carried out to optimize the best combination of factors by taking the rate of injured potatoes, bright potatoes, and skin-breaking rate as the test indexes. The force threshold for skin-breaking injury in potatoes was found to be 190–195 N. When the inclination angle of the device was 6°, the rotation speed of the separation roller was 100 r/min, and the distance between the centers of the separation rollers was 79 mm. The rate of injury was 1.25%, the rate of bright potatoes was 99.01%, and the rate of skin-breaking was 1.58%. When the inclination angle of the device was 8°, the rotational speed of the separating roller was 80 r/min, and the center distance of the separating roller was 79 mm, the rate of injured potato was 1.43%, the rate of bright potato was 98.64%, and the rate of broken skin was 1.77%. This paper offers an optimized reference for the effectual removal of sticky soil.

Suggested Citation

  • Xinwu Du & Jin Liu & Yueyun Zhao & Chenglin Zhang & Xiaoxuan Zhang & Yanshuai Wang, 2024. "Design and Test of Discrete Element-Based Separation Roller Potato–Soil Separation Device," Agriculture, MDPI, vol. 14(7), pages 1-19, June.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:7:p:1053-:d:1425899
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    References listed on IDEAS

    as
    1. Guizhi Mu & Wanshuai Wang & Tingting Zhang & Lianglong Hu & Wenxiu Zheng & Wanzhi Zhang, 2022. "Design and Experiment with a Double-Roller Sweet Potato Vine Harvester," Agriculture, MDPI, vol. 12(10), pages 1-17, September.
    2. Lihe Wang & Fei Liu & Qiang Wang & Jiaqi Zhou & Xiaoyu Fan & Junru Li & Xuan Zhao & Shengshi Xie, 2023. "Design of a Spring-Finger Potato Picker and an Experimental Study of Its Picking Performance," Agriculture, MDPI, vol. 13(5), pages 1-19, April.
    3. Guocheng Bao & Gongpu Wang & Bing Wang & Lianglong Hu & Xiaowei Xu & Haiyang Shen & Longlong Ji, 2021. "Study on the drop impact characteristics and impact damage mechanism of sweet potato tubers during harvest," PLOS ONE, Public Library of Science, vol. 16(8), pages 1-26, August.
    4. Jiali Fan & Yuyao Li & Bing Wang & Fengwei Gu & Feng Wu & Hongguang Yang & Zhaoyang Yu & Zhichao Hu, 2022. "An Experimental Study of Axial Poisson’s Ratio and Axial Young’s Modulus Determination of Potato Stems Using Image Processing," Agriculture, MDPI, vol. 12(7), pages 1-14, July.
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