The Medium-Blocking Discharge Vibration-Uniform Material Plasma Seed Treatment Device Based on EDEM

Abstract

Pre-sowing treatment of seeds by plasma can improve seed vigor and promote seed germination and growth. To solve the problems of low processing volume and uneven treatment in plasma seed treatment devices, according to the process scheme of medium-blocking discharge plasma seed treatment, a medium-blocking discharge vibration-uniform material plasma seed treatment device was designed, the structure and working principle of the vibration-uniform material device were systematically analyzed, and the mathematical model of seed force was established. According to electromagnetic vibration theory, the seed sorting and conveying principles were analyzed in the lower trough, and the relevant parameters were selected and calculated. Using EDEM discrete element simulation software, a numerical simulation of alfalfa seed feeding and vibration-uniform material process was carried out. A three-factor, three-level orthogonal test was established. The results showed that the vibration amplitude and groove shape significantly affected the coefficient of variation of seed uniformity on the groove during the seed feeding and vibration-uniform material processes, and the groove wheel speed had a certain effect on the coefficient of variation of uniformity. The main order of factors affecting the uniformity of seed spreading was vibration amplitude B > notch shape C > speed A. The optimal speed was 35 r/min, the optimal notch shape was circular, and the optimal vibration amplitude was 0.55 mm.

Influence of High-Voltage Corona Discharge on Drying Kinetics and Physicochemical Properties of Alfalfa at Various Air-Gap Spacings

“…The high-voltage power supply control system (model: YD(JZ)-1.5/50, Wuhan Boyu Electric Power Equipment Co., Ltd., Wuhan, China) enables adjustable AC and DC output voltages within the ranges of 0~50 kV and 0~70 kV, respectively. In this experiment, an AC voltage was employed due to it having a superior drying effect to DC power [7]. The needle-shaped electrode is connected to a high-power control system, while the ground electrode consists of an aluminum plate with dimensions of 1000 mm in length, 550 mm in width, and 5 mm in thickness.…”

“…In recent years, the application of high-voltage corona discharge (HVCD) technology has become increasingly prevalent in the seed pretreatment and food drying fields due to its unique technical advantages and significant processing effects [7]. The high-voltage corona electric field is a localized phenomenon of corona discharge, resulting from the ionization of air under the influence of a non-uniform electric field.…”

Agricultural Unmanned Systems: Empowering Agriculture with Automation

“…The model meets the requirements of baler feed rate monitoring in field operations. Hui et al [21] addressed low throughput and uneven treatment in plasma seed equipment. They designed a dielectric barrier discharge vibrating homogeneous material plasma seed treatment device.…”