Design and Experimental Testing of a Centrifugal Wheat Strip Seeding Device

Xingcheng An, Xiupei Cheng, Xianliang Wang, Yue Han, Hui Li, Lingyu Liu, Minghao Liu, Meng Liu and Xiangcai Zhang ()
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Xingcheng An: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Xiupei Cheng: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Xianliang Wang: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Yue Han: Zibo Investment Promotion Development Center, Zibo 255086, China
Hui Li: Shandong Academy of Agricultural Machinery Sciences, Jinan 250010, China
Lingyu Liu: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Minghao Liu: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Meng Liu: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Xiangcai Zhang: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China

Agriculture, 2023, vol. 13, issue 10, 1-17

Abstract: Wheat sowing has the characteristics of wide and short sowing periods, and there are situations in which the suitable sowing period is missed. In order to meet the needs of high-speed sowing, a centrifugal wheat strip seeding device was designed, the principle of which is that rotating parts were mainly composed of centrifugal concave plate and guide strip rotating in the shell to provide the mechanical force and drive the airflow and then realize high-speed seeding. The influence of the rotational speed of the seed discharging plate, the seed feed rate, and the dip angle of the guide strip on the distribution of the flow field and trajectory of seeds in the device was analyzed. The aerodynamic characteristics of seeds and the distribution of the gas-phase flow field inside the seed displacer under airflow were analyzed by CFD–DEM coupled simulation. The effects of three operating parameters on the coefficient of variation of sowing uniformity (CVSU) and the row-to-row seeding amount coefficient of variation (RSCV) were clarified, and the simulation results were verified by bench experiments after secondary optimization. When the centrifugal concave plate rotational speed, seed feed rate, and guide strip angle were 408 rpm, 4938 grains/s, and 69°, the results showed that CVSU and RSCV were 1.12% and 2.39%, respectively, which was in line with the standards for grain strip seeders stipulated. The designed seed discharge device can sow 3.4 ha per hour. This study provides a reference for research of centrifugal airflow-assisted high-speed seeding devices for wheat.

Keywords: wheat seeding; high-speed seeding; centrifugal; CFD–DEM coupling (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: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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