油菜旋风式烘干机结构设计与试验  

Design and Test of Rapeseed Spin Dryer

作　　者：吕磊[1] 吴明亮[1,2,3] 谢伟[1] 向伟[1] 罗海峰[1,2,3] 

机构地区：[1]湖南农业大学工学院,长沙410128 [2]南方粮油作物协同创新中心,长沙410128 [3]湖南省现代农业装备工程技术研究中心,长沙410128

出　　处：《中国农学通报》2017年第16期152-157,共6页Chinese Agricultural Science Bulletin

基　　金：湖南省政府重大专项"湖南双季稻区油菜早熟品种选育和机械化生产技术研究与生产示范机械化生产部分"(湘府阅[2014]35号);湖南省科技厅平台建设项目"湖南省现代农业装备工程技术中心"(湘财教指[2014]10号);湖南省科技厅重点项目"南方稻油机械化收获智能化技术集成研究及装备开发"(2016NK2120);湖南省研究生科研创新项目"移栽油菜成孔器成孔机理及装备研究"(CX2016B286)

摘　　要：针对油菜籽间间隙小、不易散热干燥导致霉变的难题,采用旋风气流风送烘干油菜籽的原理试制了一种油菜旋风式烘干机。通过分析油菜籽在烘干室内随气流运动过程中的受力情况,设计分级器分级孔的大小与籽粒含水量的关系,进而对气流风送风机和加热器进行选型设计,最后对烘干机样机进行烘干试验。试验结果表明,干燥器进风口温度80℃、干燥器进风口风速19 m/s、分级器直径135 mm时,油菜籽干燥失水率为1.0833%/min,油菜籽干燥后的含水率为7.65%。经烘干机烘干后的油菜籽达到相关农艺干燥标准。The small gap between rapeseed could cause difficult heat dissipation and seed drying, and result inmildew of rapeseed. To tackle this problem in production, we designed a spin dryer on the principle of dryingrapeseed with cyclone airflow. Base on the force analysis of rapeseed following the airflow movement in thedrying chamber, we discovered the relations between the size of grading hole and the moisture content ofrapeseed, and designed the structure of air blower and heater, then tested the demo dryer. The results showedthat when inlet temperature of the dryer was 80℃, the wind speed of the dryer was 19 m/s and the diameter ofthe classifier was 135 mm, the water losing rate of rapeseed was 1.0833 %/min and the water content ofrapeseed was 7.65% after being dried, which met the agronomy requirements for dried rapeseed.

关 键 词：烘干机 旋风式 分级器 设计 油菜 

分 类 号：S22[农业科学—农业机械化工程]