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目前双卧轴搅拌机叶片安装角的确定多以经验为主,一般常用值为45°。通过对搅拌叶片上的物料进行运动学分析,结合工程流体力学相关知识,求得物料轴向和径向的速度表达式;分析获得较好搅拌效果时物料的运动特点,得出物料的合理运动轨迹投影区域;根据不同拌筒的长宽比,求得相对应叶片合理安装角的取值范围:宽短型叶片安装角α取值范围在29.142°～32.865°;窄长型叶片安装角α取值范围在42.168°左右。理论分析的结果与实际应用中常用值基本吻合,为搅拌机参数的确定奠定了理论基础。
Currently two-shaft mixer blade installation angle to determine more experience-based, the commonly used value of 45 °. The kinematic analysis of the material on the mixing blade and the knowledge of engineering fluid mechanics are used to obtain the axial and radial velocity expressions of the material. The movement characteristics of the material obtained when the mixing effect is good are obtained, and the reasonable movement of the material is obtained Trajectory projection area; according to the aspect ratio of different mixing drums, obtain the corresponding reasonable blade installation angle range: short and wide blade installation angle α value range of 29.142 ° ~ 32.865 °; narrow blade installation angle α The value range is about 42.168 °. The result of theoretical analysis is in good agreement with the commonly used values in practice, which lays a theoretical foundation for the determination of mixer parameters.