Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Simulation Study on Reseeding Link of an Air-Suc-tion Precision Tray Seeder

Version 1 : Received: 30 June 2023 / Approved: 30 June 2023 / Online: 30 June 2023 (14:11:53 CEST)

How to cite: Zou, H.; Wu, M.; Shen, Y.; Xu, R.; Zhang, C.; Wang, M. Simulation Study on Reseeding Link of an Air-Suc-tion Precision Tray Seeder. Preprints 2023, 2023062264. https://doi.org/10.20944/preprints202306.2264.v1 Zou, H.; Wu, M.; Shen, Y.; Xu, R.; Zhang, C.; Wang, M. Simulation Study on Reseeding Link of an Air-Suc-tion Precision Tray Seeder. Preprints 2023, 2023062264. https://doi.org/10.20944/preprints202306.2264.v1

Abstract

Sowing accuracy is a critical factor in evaluating the precision of sowing equipment, and the sowing rate of the sowing equipment developed at home and abroad cannot reach 100 %, so this paper designs a seed reseeding device, aiming to improve the sowing rate secondly. Firstly, the structural composition of the seed reseeding device is introduced; secondly, according to the production object selected in this paper, kale seed (Jingfeng No.1), the best combination of factors and levels of the suction nozzle is 8 m/s inlet speed, 1.8 mm aperture, 18 mm lead and V-shaped nozzle by using orthogonal experiment; then, the EDEM software was used to conduct the vibration test, and it was found that the seed group “boils” steadily at about 15.13 mm (the depth of the reseeding tray is 23 mm), which can effectively improve the suction rate of the suction nozzle; finally, by combining the simulation results of the flow field using Fluent/ANSYS software and the spatial distribution of seeds, the number of seeds in the effective adsorption range of a single suction nozzle is about 4. The determined number of seeds, approximately 4, accounts for only 0.04% of the total number of seeds generated by the simulation. This percentage ensures high suction precision and a single seed rate, particularly under working conditions where a 72-hole tray is being sowed. In general, domestic sowing accuracy ranges from 90% to 95%. With this configuration, the purpose of improving the sowing rate twofold can be achieved.

Keywords

Air suction type; Precision seeder; Vibration; Seed grain distribution; Simulation analysis

Subject

Engineering, Mechanical Engineering

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