期刊论文

Structure Optimization and Experiment on Cyclone Separation-Purification Device for Small Rice Combine Harvester

中文

中国农业科技导报

1008-0864

2018

20

5

54-63

10.13304/j.nykjdb.2017.0822

湖南省战略性新型产业攻关计划项目（2014GK1056）资助；

本校为第一机构

旋风分离清选装置具有体积小、重量轻、结构简单等优点,现已广泛应用于小型水稻联合收割机。但其清选过程中仍存在损失率高、湿物料清选效果不佳等问题,通过对旋风分离筒内部结构进一步优化与改进,并运用Fluent 15.0软件对优化前后的分离筒内部气流场进行了比较分析。以吸杂风机转速、扬谷器转速、挡板倾斜角度为试验因素,清洁率和损失率为性能评价指标,运用三元二次正交试验方法进行了台架试验,试验结果表明:当吸杂风机转速为2 452 r/min,扬谷器转速为783.8 r/min,挡板倾斜角度为41°时,装置性能最佳,此时清洁率为98.26%,损失率为0.003 5%。对照试验结果表明:脱出物含水率越高,装置优化后性能提...

Cyclone cleaning device has small size, light weight and simple structure, etc. merits and has been widely used in small rice combine harvester. But there are problems like high loss rate, no ideal cleaning effect when choosing wet material in selection process, etc.. This paper further optimized and improved the inside structure of cycrong seperator; and carried out comparative analysis on the airflow field inside of scycrong seperator before and after optimization by software Fluent 15.0. Taking suction rotation rate, grain winnower rotation rate and baffle inclination angle as experimental ...