基于射流冲击的穴盘立式取苗器取苗过程的分析研究

摘要

为了提高番茄移栽的自动化水平及无损取苗的效率，以穴盘立式取苗器为载体，对于其射流冲击取苗过程中的苗钵的受力情况及空间流场参数变化进行分析研究，得到理想状态的射流冲击模型，解析出投苗初速度的影响因素。同时，分析了各因素水平的主次关系，证明了零速投苗的可行性，并通过物理试验验证了分析结论。%In order to improve the automation level of tomato transplanting and the efficiency of nondestructive pick -up seedlings , the paper takes aperture disk vertical pick-up device as an example , takes a research on the forces of the seedling pot and the parameters variation of the the flow field during the jet impingement , gets the ideal model of jet im-pingement , parses out the influence factors about seedlings initial velocity , analyzes the relationship between each factor , proved the feasibility of zero speed off seedling , and verified those conclusion by the physical experiment .