摘要
针对高湿盐泥粉碎机易堵塞及粉碎效率低下问题,以自制立式盐泥粉碎机为研究对象,设计了双刀片、双链条及刀片链条组合式3种转子结构,采用试验的方法研究了3种转子结构在不同转速下对粒径分布以及粘壁厚度的影响。借助MATLAB软件,对数据进行了R-R分布拟合,得到了粒径分布和粘壁厚度随转速和结构的变化曲线,分析了粉碎机结构对柔性粘壁拐点的影响。研究结果表明:随着转子转速的增加,粉碎粒度呈现先减小后增大的趋势,当转速为1 200 r/min时,粉碎效果最好;粘壁厚度随转速的增加而增加,双链条及刀片链条组合式转子结构的粘壁厚度稳定的时间分别为240 min和300 min;拟合的R^2大于0.9占比为83.3%,拟合结果可以用来预测颗粒的粒径分布;该结果对盐泥物料粉碎机的设计和应用有一定的参考价值。
Aiming at the problems of easy clogging and low crushing efficiency of the high-humid salty slurry crusher,the self-made vertical salty slurry crusher was taken as the research object and three rotor structures of double-blade structure,double-chain structure and blade-chain combined structure were designed.Experimental method was applied to study the influence of the rotor structure on the particle size distribution and wall-sticking thickness at different rotating speeds,and MATLAB was used to perform R-R distribution of the obtained data.The variation curves of particle size distribution and wall thickness with speed and structure were obtained.The influence of the crusher structure on the inflection point of the flexible sticky wall was analyzed.The results indicate that with the increase of the rotor speed,the crushing particle size decreases first and then increases.When the rotating speed is 1200 r/min,the crushing effect is the best.The thickness of the sticky wall increases with the increase of the speed,the wall-sticking thickness of double-chain structure and blade-chain combined structure eventually tend to stabilize and the stable time are 240 min and 300 min respectively.The fitted R^2 is greater than 0.9 and the ratio is 83.3%.The fitted results can be used to predict the particle size distribution of the particles.The research results have reference value for the design and application of the salty slurry crusher.
作者
朱桂华
唐浩亭
易山圳
何伟泽
陈勇
ZHU Gui-hua;TANG Hao-ting;YI Shan-zhen;HE Wei-ze;CHEN Yong(College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China;Hunan Zhong Da Shan Shui Environmental Protection Technology Co.,Ltd.,Changsha 410000,China)
出处
《机电工程》
CAS
北大核心
2020年第8期868-874,共7页
Journal of Mechanical & Electrical Engineering
基金
湖南省科技计划重点项目(2014SK2020)。
关键词
粉碎机
高湿盐泥
粒径分布
粘壁特性
R-R拟合
crusher
high wet salt mud
particle size distribution
stick wall characteristics
R-R fitting
