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立式捏合机搅拌桨叶由空心桨和实心桨组成,桨叶对混合物料的捏合与搅拌作用需要消耗扭矩和功率。以1 L两桨立式捏合机为研究对象,采用Fluent计算流体力学软件仿真,分析了桨叶(空心桨、实心桨)结构参数(桨桨间隙、桨叶螺旋角)对桨叶扭矩和功率特性的影响。结果表明,减小桨桨间隙或增加桨叶螺旋角,均可使空心桨叶消耗扭矩增大,导致捏合机功率输入增大;减小桨叶螺旋角,可增加桨叶捏合螺旋面积,延长桨桨捏合区桨叶对混合物料的捏合作用时间。桨桨间隙取1.5~2 mm时,桨叶螺旋角取35°消耗功率最小;桨桨间隙取1 mm时,桨叶螺旋角取45°消耗功率最小。
Vertical Kneader Stirring blades consist of a hollow paddle and a solid paddle. Kneading and mixing of the paddles requires mixing of torque and power. Taking 1L two-shaft vertical kneader as the research object, this paper uses Fluent computational fluid dynamics software to simulate and analyze the structural parameters of propeller blades (hollow propeller and solid propeller), propeller pitch and blade helix angle, on propeller torque and power Effect of characteristics. The results show that reducing the paddle pitch or increasing the blade helix angle can increase the consumed torque of the hollow blade and increase the input power of the kneading machine. Reducing the helix angle of the blade can increase the kneading helix area of the blade, Paddle paddle Kneading zone Mixing time of the kneading material. When the paddle pitch is 1.5 ~ 2 mm, the helical angle of the blade takes 35 ° and the power consumption is the smallest. When the pitch of the paddle is 1 mm, the helix angle of the blade takes 45 ° and consumes the least power.