同向双螺杆挤压膨化机三维设计与性能分析
关键字 双螺杆挤压膨化机，结构设计，有限元，三文建模
毕业设计说明书（论文）外文摘要
Title Three-dimensional design and performance analysis of corotating twin screw extrusion machine
Abstract
Extrusion technology is an important part of the modern procession technology, it has been used in the field of food for over a hundred years.We can improve the function and nature through rasing the bioavailability and digestion of extrusion materials,in addition, the factory can make the production has more nutrition through adding some trace elements and vitamin by using the extrusion technology.With the depth of the extrusion technology research, how to make full use of extrusion machine in order to produce excellent products has become an important issue. In recent years,the twin screw extruder developed rapidly because of its better adaptability and higher production effciency with the increasingly demand for quality products.This paper mainly used twin screw extruder as the research object and made the structural design of its key components. We also used graphics software and finite element analysis software analysied the performance and carried out 3D modeling. Finally, completed the 2D assembly drawing of the machine.
Key words: twin screw extruder, structural design, finite element, 3D modeling
目 次
1 绪论 1
1.1 课题选择背景及其意义 1
1.2 国内外研究及发展 1
2 总体结构设计 4
2.1 挤压膨化机原理 4
2.2 挤压膨化技术的特点 5
2.3 挤压膨化的工艺流程 6
2.4 双螺杆挤压膨化机设计 7
3 各组成部件的设计与结构 9
3.1 电动机选择 9
3.2 减速器主要零件的设计 9
3.3 传动机构设计12
3.4 挤压杆的设计计算15
3.5 切割装置的设计20
4 关键零件校核23
4.1 螺杆轴传动装置校核23
4.2 花键校核26
4.3 仿真图像26
5 总装图29
5.1 总体装配图29
5.2 主要工作装置爆炸图29
结 论31
致 谢32
参 考 文 献33
1 绪论
1．1 课题研究背景及其意义
挤压与膨化技术是一种集混合、搅拌、破碎、加热、蒸煮、杀菌、灭酶、膨化及成型于一体的技术，其在食品领域的应用已有100多年的历史。随着挤压与膨化技术研究的深入，挤压膨化技术理论日趋完善，挤压膨化工艺和装备不断改进，其在食品领域的应用越来越广泛，被称为21世纪食品加工领域的高新技术之一。近年来，采用挤压膨化技术生产的食品涵盖了主食类，早点类、儿童食品、休闲食品、人造肉、饲料等。有关挤压膨化技术和设备的专利层出不穷，挤压膨化食品在食品大家族中的地位也越来越重要。