Affiliation:
1. Jilin Agricultural Machinery Research Institute, Changchun, 130022, China
Abstract
In this paper, a screening machine was designed to remove the impurities in the tuber harvest, which integrates the functions of vibration screening, air separation, and flexible polishing. Discrete element simulation analysis was carried out to investigate the movement of tuber harvest and soil in the machine and the effect of polishing and removing impurities, the rationality of the structure, and the size were verified. Orthogonal tests were designed and carried out, with the rate of impurity, loss, and crushing as indicators and crank speed, impeller speed, and polishing roller speed as factors. The optimum working parameters were obtained: crank speed 280.12 r/min, impeller speed 1056.27 r/min, polishing roller speed 405.02 r/min, the impurity content was 0.29%, the loss rate was 1.01%, and the breakage rate was 0.11%. Through experimental verification, the actual value and theoretical value are basically the same, which verifies the rationality.
Reference23 articles.
1. An, Z., Wang, R., Liu, P., & Fan, J. (2022). Design Study of a New Type of Flat Body Cleaning Device. Journal of Electronics and Information Science, Vol. 7(1), pp. 99-102. http://dx.doi.org/10.23977/jeis.2022.070117
2. Chen, X.S., Ma, X., Chen, G.R., Qi, L., Wu, T., Zeng, L.C. (2015). Research on root-soil separation device for deep-rooted Chinese medicinal materials. Mechanical Design, Vol. 32 (07), pp.65-70. DOI: 10.13841/j.cnki.jxsj.2015.07.014
3. Chinese Academy of Agricultural Mechanization Sciences (2007). Agricultural Machinery Design Manual (农业机械设计手册). China Agricultural Science and Technology Press, Beijing, China. (In Chinese)
4. Du, J., Heng, Y., Zheng, K., Luo, C., Zhu, Y., Zhang, J., & Xia, J. (2022). Investigation of the burial and mixing performance of a rotary tiller using discrete element method. Soil and Tillage Research, Vol. 220, pp. 105349. https://doi.org/10.1016/j.still.2022.105349
5. Fu Y. (2019). Study on screening device for wet peanut pods (鲜花生荚果筛选装置试验研究). Shenyang Agricultural University. (In Chinese). DOI: 10.27327/d.cnki.gshnu.2019.000323