Study and Experiment on Screen Surface Homogenization Technology of Dislodged Material Based on Longitudinal Flow Threshing

Jiarui Ming, Qinghao He, Dong Yue, Jie Ma, Yanan Wang, Jianning Yin, Yipeng Cui and Duanyang Geng ()
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Jiarui Ming: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Qinghao He: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Dong Yue: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Jie Ma: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Yanan Wang: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Jianning Yin: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Yipeng Cui: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Duanyang Geng: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China

Agriculture, 2024, vol. 14, issue 5, 1-26

Abstract: Aiming at the problems of uneven distribution of dislodged material on the screen surface of longitudinal axial flow grain combine harvester, a large difference in material clearing time, and large clearing loss, a dislodged material homogenizing device that can realize dislodged material return and homogenization at the rear of longitudinal axial flow was developed. (1) The structure and motion parameters of the reflux plate were determined, and simulation tests were carried out to verify them; (2) A test bench was set up, and the Box-Behnken test method was adopted to determine the influence law of each factor on the operating effect and the optimal parameter combination, and the results showed that the tilt angle of the return plate, motor speed, and amplitude had a significant influence on the distribution uniformity of the material on the screen surface; it was determined that the optimal combination of the angle of the return plate configuration was 28.7°, the speed of the motor was 247 r/min, the amplitude of the return plate was 18.3 mm, and the seed contamination rate was 0.48%. The optimum combination was determined to be 28.7°, 247 r/min, 18.3 mm, and 0.48% impurity rate; (3) under the conditions of the field test validation, the validation error is less than 5%, proving that it can effectively improve the performance of the clearing and reduce the rate of impurity content.

Keywords: longitudinal flow threshing; corn kernel cleaning; return homogenizer; seed impurity rate (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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