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Experimental Study on the Particle Size and Weight Distribution of the Threshed Mixture in Corn Combine Harvester

Author

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  • Ning Zhang

    (Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
    Key Laboratory of Efficient Sowing and Harvesting Equipment, Ministry of Agriculture and Rural Affairs, Jilin University, Changchun 130022, China)

  • Jun Fu

    (Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
    Key Laboratory of Efficient Sowing and Harvesting Equipment, Ministry of Agriculture and Rural Affairs, Jilin University, Changchun 130022, China)

  • Ruixue Wang

    (Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China)

  • Zhi Chen

    (Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
    Key Laboratory of Efficient Sowing and Harvesting Equipment, Ministry of Agriculture and Rural Affairs, Jilin University, Changchun 130022, China
    Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China)

  • Qiankun Fu

    (Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
    Key Laboratory of Efficient Sowing and Harvesting Equipment, Ministry of Agriculture and Rural Affairs, Jilin University, Changchun 130022, China)

  • Xuegeng Chen

    (Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
    College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China)

Abstract

The distribution of the threshed mixture is the link between the threshing and cleaning process during corn harvesting. Uneven distribution leads to a local accumulation of the mixture in the cleaning, resulting in high impurity and loss rate. Existing studies rarely concern the distribution of the corn threshed mixture. To address this problem, the distribution experiment was conducted in a self-made corn longitudinal axial threshing system to explore the distribution pattern, and both the particle size distribution and weight distribution of components (corn kernel, corn cob, and corn husk) were analyzed in this study. The results showed that the drum speed and concave clearance has a significant effect on particle size. Moreover, the impurities (corn cob, corn husk) increase with the drum speed. The weight distribution has an obvious uneven trend. In the axial weight distribution, corn kernels increased initially and decreased afterwards, while corn cobs and corn husks constantly increased. In the radial weight distribution, corn kernels and corn cobs were greater on both sides and less in the middle; corn husks had a clear left posterior accumulation. The increase in drum speed and feed rate and the decrease in concave clearance aggravated the inhomogeneity of the weight distribution. By analyzing the distribution characteristics, the drum speed of 400 r/min, concave clearance of 40 mm, and feed rate of 7 kg/s were confirmed to be optimal operating parameters. Under these conditions, the accumulation of the threshed mixture was weakened, which provided a satisfactory base for the subsequent cleaning. This study could provide a data support for the improvement of the threshing system. Additionally, this study is believed to have the potential to be used for the structural design of the cleaning system to reduce mixture accumulation and improve the cleaning performance.

Suggested Citation

  • Ning Zhang & Jun Fu & Ruixue Wang & Zhi Chen & Qiankun Fu & Xuegeng Chen, 2022. "Experimental Study on the Particle Size and Weight Distribution of the Threshed Mixture in Corn Combine Harvester," Agriculture, MDPI, vol. 12(8), pages 1-20, August.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:8:p:1214-:d:887205
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    References listed on IDEAS

    as
    1. Zhenye Li & Jun Fu & Xiwen Luo, 2021. "Tensile Properties and Fracture Mechanisms of Corn Bract for Corn Peeling Device Design," Agriculture, MDPI, vol. 11(8), pages 1-16, August.
    2. Liquan Yang & Qingqing Lü & Hongmei Zhang, 2022. "Experimental Study on Direct Harvesting of Corn Kernels," Agriculture, MDPI, vol. 12(7), pages 1-15, June.
    3. Mohamed Anwer Abdeen & Abouelnadar Elsayed Salem & Guozhong Zhang, 2021. "Longitudinal Axial Flow Rice Thresher Performance Optimization Using the Taguchi Technique," Agriculture, MDPI, vol. 11(2), pages 1-14, January.
    4. Jianwei Fu & Gan Xie & Chao Ji & Weikang Wang & Yong Zhou & Guozhong Zhang & Xiantao Zha & Mohamed Anwer Abdeen, 2021. "Study on the Distribution Pattern of Threshed Mixture by Drum-Shape Bar-Tooth Longitudinal Axial Flow Threshing and Separating Device," Agriculture, MDPI, vol. 11(8), pages 1-15, August.
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