摘要
为满足水稻大田精量直播机械化需求,设计了一种气吸式垂直圆盘排种器。阐述了该排种器的工作原理,根据农艺要求和实际试验确定了其吸种孔的布置方式,通过理论计算确定了其主要结构及工作参数。开展了吸孔直径、排种盘转速和吸种负压对排种性能影响的试验研究,结果表明:影响排种性能的主次因素依次为气室真空度、排种盘转速、气室真空度与排种盘转速的交互项;最优工作参数组合为吸种孔直径1. 4 mm、转速40 r/min、气室真空度1. 8kPa,在此条件下排种合格指数为82. 91、重播指数为11. 56、漏播指数为5. 53,满足水稻的精密播种要求。
In order to realize mechanized direct seeding of rice,a air-suction precision metering device for rice was designed.Working principle of metering device was expounded. Structural parameters of metering device were determined by the theoretical calculation,which contained the suction hole diameter and negative pressure. In order to verify the performance of seed-metering device and find the best parameter combination,orthogonal test was carried out by using the eligible index,multiple index and missing index as experimental indexes. The optimal experimental results were: suction hole diameter of 1. 4 mm,rotating speed of seed tray of 40 r/min and negative pressure of 1. 8 kPa,and corresponding performance indexes were as following: eligible index was 82. 91,multiple index was 11. 56 and missing index was 5. 53,which could completely meet requirement of technical specifications of quality evaluation.
作者
魏海明
杨发展
李建东
杨薇
罗佳
刘绪超
WEI Haiming;YANG Fazhan;LI Jlandong;YANG Wei;LUO Jia;LIU Xuchao(College of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao Shandong 265200,China;MENOBEL Co.,Ltd.,Beijing 100083,China)
出处
《农业工程》
2018年第11期93-96,共4页
AGRICULTURAL ENGINEERING
基金
国家重点研发计划子课题"水稻种子繁育智能化精量播种技术装备与研发"(项目编号:2017YFD0701201)
山东省重点研发计划"面向黄河三角洲等盐碱地海水稻种子繁育智能精量播种技术与装备研发"(项目编号:2018GNC112005)
关键词
水稻
气吸式排种器
设计
性能试验
rice
air suction metering device
design
performance test