卧式砂辊碾米机中碾白室内流场的仿真分析  

Simulation analysis of flow field in whitening chamber of horizontal sand roller rice mill

作　　者：李瑜 杨柳 范雨超 李诗龙 宋少云 LI Yu;YANG Liu;FAN Yu-chao;LI Shi-long;SONG Shao-yun(School of Mechanical Engineering, Wuhan Polytechnic University, Wuhan, Hubei 430023, China;Hubei Grain and Oil Machinery Engineering Technology Research Center,Wuhan 430023,China)

机构地区：[1]武汉轻工大学机械工程学院,湖北武汉430023 [2]湖北省粮油机械工程技术研究中心,湖北武汉430023

出　　处：《武汉轻工大学学报》2022年第1期96-101,共6页Journal of Wuhan Polytechnic University

基　　金：湖北省教育厅科研项目(Q20211609);武汉轻工大学博士启动科研(2019RZ08);武汉轻工大学校杰出青年科研项目(2020J06);江苏省食品先进制造重点实验室开放基金(FM-202103).

摘　　要：为了研究卧式砂辊碾米机中砂辊转速、砂辊与米筛之间的距离以及砂辊表面螺旋槽β角对碾白室内流场速度和压力的影响。以NS·18型卧式砂辊碾米机为原型,采用Fluent软件对碾白室内的流场进行仿真模拟。结果表明,砂辊转速增加,会使流场内轴向推进和翻滚作用增强;砂辊与米筛之间的距离为10 mm时,便于米刀调节碾白室内的碾白压力;砂辊表面螺旋槽β角的增加,流场内的轴向推进作用减弱,但翻滚作用增强;与其他因素相比转速对碾白室内流场的影响更为显著。In order to study the effect of rotating speed of sand roller,distance between sand roller and rice sieve and spiral grooveβAngle of sand roller surface on flow field velocity and pressure in horizontal sand roller rice milling machine.Based on NS·18 horizontal sand roller rice milling machine,Fluent software was used to simulate the flow field in whitening chamber.The results show that the axial propulsion and rolling effect will be enhanced with the increase of the rotating speed of sand roller.When the distance between the sand roller and the rice sieve is 10mm,it is convenient to adjust the whitening pressure whitening chamber with the rice knife.With the increase of spiral grooveβAngle of sand roller surface,the axial propelling effect weakens,but the rolling effect strengthens.Compared with other factors,the effect of rotating speed on the flow field in whitening chamber is more significant.

关 键 词：碾米机 碾白室 砂辊 流场 FLUENT 

分 类 号：TS212.3[轻工技术与工程—粮食、油脂及植物蛋白工程]