双卧轴搅拌机搅拌臂排列及叶片形状研究

发布时间：2018-03-01 08:33

本文关键词： 搅拌主机搅拌臂排列叶片安装角试验样机　出处：《山东大学》2016年硕士论文　论文类型：学位论文

【摘要】：混凝土作为现代社会基础建设的主要建筑材料,其质量和使用效率的要求越来越高。双卧轴强制式搅拌主机因其搅拌效率高、搅拌质量优的突出特性成为当今工程上使用量最多的混凝土搅拌设备。虽然双卧轴强制式搅拌主机使用量最多但是由于其自身结构比较复杂,双卧轴强制式搅拌主机的搅拌效能优化研究难度很大,国内外对这一类型的主机设计多依赖经验。本课题以老式JS1000主机为基础根据其目前存在的缺点制定本次优化的目标。着重对本次优化的传动装置、搅拌装置参数选取进行分析计算。在设计取值时从搅拌机理入手,分析搅拌过程中物料颗粒的运动和变化形式,分析影响主机搅拌效能的主要结构参数,包括搅拌臂数目及布置形式、搅拌叶片安装角、搅拌罐长径比、搅拌轴转速等。确定本次优化设计选取值：搅拌装置参数为围流排列、平行布置、正正排列、相位角60。、搅拌臂8个、搅拌叶片线速度1.6m/s、叶片安装角40。。通过fluent软件对优化前后两种搅拌主机搅拌时的流场进行了仿真分析,确定了新型主机是否达到优化目标。又通过试验样机的试验结果验证优化方案参数选择的正确性。再通过工业验证来确定其优化效果。本课题通过理论分析、fluent软件仿真分析及试验样机试验相互印证,既发挥了理论分析和软件仿真不受实验条件限制的优势,又克服了模型理想化的局限,同时减少了试验的大量投资及缩减了试验时间,取得了很好的优化效果,为新型双卧轴强制式搅拌主机的设计研发提供了一种较好的方法,同时提供了部分理论依据及试验数据。通过工地实际使用验证效果,确定本次产品优化取得了成功。
[Abstract]:As the main building material of modern social infrastructure construction, the quality and efficiency of concrete are more and more demanding. The outstanding characteristic of excellent mixing quality has become the most widely used concrete mixing equipment in engineering nowadays. Although the double horizontal shaft forced mixing machine is used the most, because of its complicated structure, It is very difficult to optimize the mixing efficiency of the double horizontal shaft forced stirring engine. The design of this type of mainframe at home and abroad depends on experience. Based on the old-fashioned JS1000 mainframe, this paper formulates the goal of this optimization according to its existing shortcomings. The parameters of the mixing unit are selected for analysis and calculation. In the design of the mixing mechanism, the movement and change form of the material particles in the mixing process are analyzed, and the main structural parameters that affect the stirring efficiency of the main engine are analyzed. Including the number and layout of the stirring arm, the angle of the blade, the aspect ratio of the mixing tank, the rotating speed of the mixing shaft, etc. The optimum design selection value is determined as follows: the parameters of the mixing device are circumfluence arrangement, parallel arrangement, positive arrangement, etc. The phase angle is 60. 0, the mixing arm is 8, the linear speed of the stirring blade is 1.6 m / s, and the blade installation angle is 40. The flow field of the two kinds of stirring engine before and after optimization is simulated by fluent software. It is determined whether the new mainframe can achieve the optimization goal, and the correctness of the parameter selection of the optimization scheme is verified by the test results of the experimental prototype. Then, the optimization effect is determined by industrial verification. This subject is analyzed by theoretical analysis of fluent software. The simulation analysis of the parts and the test of the prototype proved each other. Not only the advantages of theoretical analysis and software simulation are not limited by experimental conditions, but also the limitation of model idealization is overcome. At the same time, the investment of experiment is reduced and the test time is reduced, and good optimization results are obtained. It provides a better method for the design and development of a new type of double horizontal shaft forced stirring engine, and provides some theoretical basis and test data. Through the practical application and verification effect on the site, it is determined that the optimization of the product has been successful.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU642

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