气力集排式油菜精量排种器  

Pneumatic Centralized Metering Device for Rapeseed

作　　者：廖庆喜[1] 张猛[1] 余佳佳[1] 刘晓辉[1] 

机构地区：[1]华中农业大学工学院,武汉430070

出　　处：《农业机械学报》2011年第8期30-34,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(50875104);教育部新世纪优秀人才支持计划资助项目(NCET-07-0344);高等学校博士学科点专项科研基金资助项目(20090146110016)

摘　　要：针对油菜籽等小粒径种子的精量播种要求和传统排种器单体只能实施单行播种致使结构复杂的问题,设计了一种气力集排式排种器,阐述了结构设计的关键技术。以华杂4号油菜籽为试验对象,取滚筒相对压力、滚筒转速为主要影响因素进行了排种均匀性与排种一致性试验,确定各因素对排种均匀性与排种一致性的影响程度及因素水平优化组合。结果表明:影响排种器排种均匀性的因素主次顺序为滚筒相对压力、滚筒转速,且在滚筒相对压力为-1.5 kPa,滚筒转速为20 r/min时,排种一致性与排种均匀性同时达到最优,排种器排种性能最好。In order to solve the problem of small seed＇s precision seeding such as rapeseed seeds and complex structure caused by traditional metering device＇s multiline sowing,a pneumatic centralized metering device was developed.The structure and parameters were analyzed.With ＂Chinese hybrid 4＂ rapeseed as the test object,seeding consistency test and seeding uniformity test were applied to research the vacuum value and rotate speed of the roller that influenced the sowing-performance mainly.According to experiment analysis,the influencing regularity and the optimization of all the factors were defined.The analyses of the experiment results indicated that the vacuum value was the most important factor,the second was rotate speed.The optimum operation condition were： vacuum value of-1.5kPa and rotate speed of the roller of 20r/min.

关 键 词：排种器 油菜 气力集排式 

分 类 号：S233.2[农业科学—农业机械化工程]