摘  要

本文先分析了挤压机的市场需求和生产现状，并初步探讨了挤压机生产食品的工艺可行性；提出了用双螺杆挤压机生产食品的工艺流程。在现有挤压机的基础上，并参考了国内外比较成熟的挤压机设计方法，根据各种食品的特性和生产食品的特殊工艺要求，对挤压机的关键部位进行了相应的设计。本文详细的介绍了挤压机的主要零部件传动箱、传动系统、机筒等的结构设计，并进行了相应的校核计算；对主要传动零部件如传动箱大小齿轮，带轮，从动轴，键等进行了设计和强度校核，并对轴承承载能力进行了校核计算;本文还涉及了挤压机一些辅助元件如加料系统，加热冷却装置，模头的选择要求,并进行了简单的设计。最后，本文介绍了一些关于挤压机的安装，操作，控制和维护等方面的内容。
 
关键词：传动系统；挤压混炼；反向旋转双螺杆挤压机
 
 

Abstract

In this page, the market need of the extrusion press and the condition of the production is analyzed first. And from theoretically, we studied the technique possibility to produce the foods. We expounded the specialty and working elements of the twin-screw extruder and pointed working flow to produce the foods with twin-screw extruder. In the base of the extruders in existence, we referenced the mature means of extruder design in our country and abroad and based the characteristic of foods and the special working craftwork requires, then, we designed the key structure of extruder. In this text, we introduced the structure design of extruder in detail, particular to the major parts: assignment tank, screw, barrel and systems analysis and calculating. To those important transmission parts: the big gear and the small gears in assignment tank, strip wheel, driving spindle, key, we made a design and check the intensity. And we calculate and check the carrying capacity of the bearing particularly. We also refer to the choosing requirements of the accessories: heating and cooling system, die, knife equipment, and made a simple design. In the end of the text, the installing, operation, controlling and repairing of the extruder were also introduced.
Key words： The transmission system；extrusion mixing and shaping；Counter-rotation twin -screw extruder
目  录