谷物类物料湿法超细粉碎机理与实验研究

Wet ultrafine grinding mechanism and experiment of grain material

通过对谷物类物料物性的分析,提出谷物类物料的有效粉碎方式应为剪切式切割粉碎。对剪切式湿法超细粉碎机理进行研究,得出粉碎效果主要受转子转速、静刀片间隙(以静刀片齿数作为参考)和循环次数的影响,并利用研制的湿法超细粉碎机,以玉米作为实验原料设计正交试验进行验证,得出一组最优的参数组合。研究结果表明,当转子转速为9 000 r/min,静刀片齿数为222齿,循环次数为3次时,玉米被粉碎后颗粒的平均粒径可以达到30μm左右。

Through the analysis of the grain material property,we proposed that the effectively crushing method for grain should be shearing-type cutting and crushing.The shearing-type wet ultrafine grinding mechanism was studied,the crushing effect was mainly affected by the rotor speed,blade gap （with static blade teeth as a reference） and the number of cycles.Using wet ultrafine mill,with corn as raw material,the optimal parameters were obtained by orthogonal test.The results showed that,when the rotor speed was 9 000 r/min,the static blade of 222 teeth,circulation of 3 times,the average particle size of corn pulverized reached about 30 μm.