摘要
气吸式穴盘育苗播种机是工厂化育苗技术中的核心设备,其吸嘴的设计是整个气吸式播种机设计的关键之一。本文根据正交试验原理,采用数值模拟正交试验方法,在CFD软件FLOWORKS上分别建立不同因素水平的吸嘴三维有限元模型,给定边界约束条件进行有限元分析计算,利用统计学软件SPSS对计算结果进行极差与方差分析,确定了各因素对试验结果的重要次序为嘴形>真空度>孔径>导程;吸嘴的最佳设计参数为A3B2C2D3;结构优化表明:一定锥角的V型吸嘴在气源同功耗的情况下,不仅可以改善吸嘴的吸附性能,而且有利于精量取种。
Air-suction Precision Tray Seeder was the core equipment of industrial seedling technique. Suction nozzle design was most important. The Numerical Simulation Orthogonal Test was adopted in this paper and established the 3D finite element model of Suction nozzle on different factor level by using CFD software FLOWORKS. Finite element analysis and calculation were conducted under the given boundary constraint conditions. The SPSS software was used to take the analysis of range and variance for the results. The important sequence is determined as follows： nozzle shape 〉 vacuum degree 〉 aperture 〉 lead. The optimum design parameters are A3B2C2D3. The structural optimization shows that V-type nozzle can improve absorption properties and precision seed extraction under the same power consumption of gas source.
出处
《石河子大学学报（自然科学版）》
CAS
2009年第1期100-103,共4页
Journal of Shihezi University(Natural Science)
基金
新疆兵团产业化专项(20070301)
关键词
吸嘴
正交试验
优化设计
播种机
suction nozzle
orthogonal test
optimum design
seeder
