卧式超细搅拌磨机分散盘的结构改进及试验研究

Structural improvement and test study on dispersion disk of horizontal ultrafine stirring mill

针对现有卧式超细介质搅拌磨机分散盘结构中存在的不足,在优化分析的基础上,提出了一种新型的分散盘结构形式。结合RNGκ-ε湍流模型和SIMPLEC算法,分别建立了现有分散盘和新型分散盘结构的仿真分析模型,通过对卧式介质搅拌磨机研磨腔内流场进行仿真分析,分别得到了研磨腔内流场速度、湍流强度、剪切率和黏性耗散率的分布规律。结果显示,使用新型分散盘结构的搅拌磨机具有更高的研磨性能。同时通过对试验样机的测试表明,使用新型分散盘结构的搅拌磨机的研磨效率显著提高,且在相同的研磨时间内,浆料粒径明显减少。

In view of the structural shortcomings of current dispersion disk of the horizontal medium ultrafine stirring mill, the paper proposed a new-type dispersion disk after optimization analysis, and separately established the simulation model of current dispersion disk and the model of the new-type dispersion disk by combining RNG κ-ε turbulence model and SIMPLEC algorithm. After that, it simulated and analyzed the flow field inside the grinding chamber of the horizontal medium stirring mill, and obtained the distribution laws of the speed, turbulence intensity, shearing ratio and viscosity dissipation ratio of the flow field inside the grinding chamber. The results showed the application of the new-type dispersion disk enhanced the grinding performance of the stirring mill. Meanwhile, the test for the prototype showed the application of the new-type dispersion disk enhanced the grinding efficiency of the stirring mill, and the particle size of the product obviously decreased within the same grinding duration.