锤片式饲料粉碎机分离装置结构的改进

摘要

For the back flow of feed hammer grinder was too large,the separation device structure was improved.Using the finite element analysis software FLUENT,the gas-solid two-phase flow motion in the separation device was simulated,on the basis of this,the thinking that the feedback pipe openings could reduce the material flow was put forward.The simulation results showed that,openings in the feedback pipe of feed hammer grinder,could reduce the effect of negative pressure in the center on the flow state of flow field,which was an effective way to solve the problem of excessive back flow of feed hammer grinder airflow,and could improve the separation efficiency.%针对锤片式饲料粉碎机回流量过大的问题,对分离装置结构进行了改进.在利用有限元分析软件FLUENT对分离装置中的气固两相流运动状态进行模拟的基础上,提出在回料管上开孔可以减小物料回流量的思想.仿真结果表明,在饲料粉碎机的回料管上开孔,可降低中心区域负压对气流场流动状态的影响,是有效解决锤片式粉碎机气流回流量过大这一问题的途径,可提高分离效率.