• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (20): 330-337.doi: 10.3901/JME.2018.20.330

• 其他应用领域 • 上一篇    下一篇

立式捏合机桨叶间隙、螺旋角对搅拌扭矩和功率特性的影响

梁建1, 罗小辉2,3, 李锡文2,3, 史铁林2,3   

  1. 1. 中国空空导弹研究院 洛阳 471009;
    2. 华中科技大学数字制造装备与技术国家重点实验室 武汉 430074;
    3. 华中科技大学机械科学与工程学院 武汉 430074
  • 收稿日期:2017-10-16 修回日期:2018-07-18 出版日期:2018-10-20 发布日期:2018-10-20
  • 通讯作者: 梁建(通信作者),男,1986年出生,博士,工程师。主要研究方向为立式捏合机桨叶混合机理与流体CFD仿真分析、舵机非线性动力学仿真分析与结构优化设计。E-mail:liangjian5282@126.com
  • 基金资助:
    中国空空导弹研究院青年创新基金资助课题资助项目(CQKJJ00)。

Effects of Blades' Clearance and Helical Angle on the Stirring Torque and Power of the Twin-blade Planetary Mixer

LIANG Jian1, LUO Xiaohui2,3, LI Xiwen2,3, SHI Tielin2,3   

  1. 1. China Airborne Missile Academy, Luoyang 471009;
    2. State Key Laboratory of Digital Manufacturing Equipment and Technology, Wuhan 430074;
    3. School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074
  • Received:2017-10-16 Revised:2018-07-18 Online:2018-10-20 Published:2018-10-20

摘要: 以1 L两桨叶立式捏合机为研究对象,采用CFD方法系统性地研究立式捏合机桨叶结构参数(间隙、螺旋角)对搅拌牛顿流体(玉米糖浆)的搅拌扭矩和功率消耗的影响关系。立式捏合机仿真模型与试验数据进行对比验证,确保了模型的可信度。研究结果表明,减小桨叶间隙或增大桨叶螺旋角可增大桨叶搅拌扭矩和功率消耗。减小桨叶螺旋角可增加桨叶捏合作用时间,减小桨桨间隙或增大桨叶螺旋角可增大桨叶捏合作用强度。一定范围内,桨桨间隙c1=3.0 mm、螺旋角βk=35°时,空心桨平均扭矩取得最小值0.046 93 N·m;桨桨间隙c1=1.0 mm、螺旋角βk=55°,空心桨平均扭矩取得最大值0.068 73 N·m。搅拌牛顿流体时,立式捏合机功率准数NpM与雷诺数ReM为线性关系,并且桨桨间隙对立式捏合机功率特性曲线的影响大于桨叶螺旋角的影响。

关键词: 功率, 桨叶间隙, 搅拌扭矩, 立式捏合机, 螺旋角

Abstract: In the present paper, the 1 L twin-blade planetary mixer is selected as the research object, utilizing the CFD method to systematically research the effecting relation of the blade's geometric parameters (blade-blade clearance, helical angle) of the twin-blade planetary mixer on the mixing torque and the power consumption when mixing the Newtonian fluid(corn syrup). The simulation model of the twin-blade planetary mixer is made comparison validation to experimental data, which in turn make sure the results are reliable. The research results show that decreasing the clearance or increasing the helical angle can increase the mixing torque and power consumption of blades. Increasing the helical angle can increase the kneading time, and decreasing the clearance or increasing the helical angle can enhance the kneading strength of blades. Within certain limits, when the clearance c1=3.0 mm and the helical angle βk=35°, the average torque of hollow blade reaches the minimum value 0.046 93 N·m; when the clearance c1=1.0 mm and the helical angle βk=55°, the average torque of hollow blade reaches the maximum value 0.068 73 N·m. When the twin-blade planetary mixer stirs the Newtonian fluid, the Power number NpM and the Reynolds number ReM show the linear relation, and the effect of clearance on the power characteristic of twin-blade planetary mixer is more notable than the helical angle.

Key words: clearance, helical angle, power, stirring torque, twin-blade planetary mixer

中图分类号: