扰种齿辅助气吸式大蒜排种器设计与试验

为解决杂交蒜尺寸差异大而导致排种过程中单粒合格指数低及漏播指数高的问题,设计了一种扰种齿辅助气吸式大蒜排种器.以杂交蒜为研究对象,阐述了扰种齿辅助气吸式大蒜排种器的工作原理,基于杂交蒜自身的物理特性和农艺种植要求,构建了扰种齿曲面方程,确定排种器的关键结构参数;在此基础上以取种合格指数为试验指标,基于EDEM软件对排种...

Design and Test of Garlic Seed Placer with Seed Disturbing Tooth Assisted Air Suction

In order to solve the problem that the size difference of hybrid garlic led to the low qualified index of single grain and the high omission-sowing index, a kind of garlic seed platter with air suction assisted by seed disturbing teeth was designed. Hybrid garlic was taken as the research object, and the working principle of seed stirrer assisted by air suction type garlic seed platter was described. Based on the physical characteristics of hybrid garlic itself and the requirements of agricultural planting, the surface equation of seed disturbing tooth was constructed to determine the key structural parameters of seed platter. On this basis, the seed selection qualification index was taken as the test index, and the seed arrangement process was simulated and analyzed based on EDEM software to determine the optimal structural parameters of the seed disturbing teeth. At last, the performance of hybrid garlic was studied with the operating speed, the rotation speed of seed platter and the vacuum degree as the test factors, and the high qualification index and low omission index as the test indexes. Based on the optimization of the regression model, when the operating speed was 1km/h, the rotation speed of the seed platter was 11.66r/min, and the vacuum degree was 5kPa, the eligibility index of seed selection was 87.1%, and the omission index was 8.8%, which met the requirements of single seed selection of garlic. The research result can provide a feasible reference for the mechanized seeding of hybrid garlic.