农业机械学报2023，Vol.54Issue(z1)：47-56,75,11.DOI:10.6041/j.issn.1000-1298.2023.S1.006
播种机气送式集排器增压管内种子流运移特性研究
Seed Flow Migration Characteristics in Booster Tube of Gas-fed Collector
摘要
Abstract
Compared with traditional mechanical seed metering,pneumatic seed collectors are beneficial for the configuration and efficiency improvement of seeders,and have become the main trend in the development of seed collectors both domestically and internationally.The pressurization pipe of the pneumatic collector of the seeder is an important component of the seed particle conveying process,and its structure directly affects the operational performance of the seeder.A combination of theoretical analysis and EDEM Fluent coupling was used to study the transport characteristics of seed flow in a pressurized pipe.After theoretical analysis,it was found that the main factors affecting seed particles included the structure of booster tube,the conveying airflow,and the material of device.Due to the external factors of device materials and conveying airflow,rapeseed seeds were mainly taken as an example to study the influence of pressure pipe structure on the motion state of seed particles.Coupling analysis showed that the commonly used V-shaped corrugated booster pipe had a good disturbance and dispersion effect on the seed flow.When the airflow speed was 16 m/s,the mass of the outlet seed flow was relatively uniform when the diameter of the booster pipe was 30 mm,the length was 100 mm,the width was 10 mm,and the depth was 2 mm,with a coefficient of variation of 17.32％.The correctness of coupling parameters and model selection was verified through bench tests.关键词
气送式集排器/增压管/运移特性/耦合分析Key words
pneumatic exhaust collector/booster tube/migration characteristics/coupling analysis分类
农业科技引用本文复制引用
高筱钧,王世同,吴晓鹏,黄玉祥,闫小丽..播种机气送式集排器增压管内种子流运移特性研究[J].农业机械学报,2023,54(z1):47-56,75,11.基金项目
国家自然科学基金项目(52205283)、中国博士后科学基金项目(2022M722609)和陕西省重点研发计划项目(2023-YBNY-204) （52205283）
