大学毕业论文—jna型自熟式米粉挤丝机设计.doc

题目： JN-A型自熟式米粉挤丝机 摘 要 米粉挤丝机是一种将大米加工成米粉条的食品加工机械设备。米粉挤丝机有多种型号，JN—A型是一种使用效果比较好的设备。我这次毕业设计的课题就是设计一种JN—A型自熟式米粉挤丝机。它的工作过程主要分为熟化和挤丝成型两个阶段。 在此次毕业设计中，分析了JN—A型自熟式米粉挤丝机的工作原理，主要完成了大带轮转速的计算，得到熟化螺旋和挤丝螺旋需要的转速。了解了设计的总体结构和主要零件的作用。熟化筒体中放有熟化螺旋起熟化作用，挤丝筒体中放有挤丝螺旋起挤丝作用，调整控制阀可以得到品质优良的米粉条。采用不同孔径的出料粉镜可以得到各种粗、细品种的米粉条。绘制了主要零件图和装配图。 关键词：带轮、熟化筒体、熟化螺旋、挤丝筒体、挤丝螺旋、输料管、控制阀、出料粉镜。 Abstract Flour machine is a kind of squeeze rice into a rice processing of the food processing machinery and equipment. Extrusion of rice flour has a wide range of machine models, JN-A type is a better use of the effect of equipment. I am the subject of this graduation project is to design a self-JN-A squeeze cooked rice machine type. It is divided into the working process of maturation and a two-stage extrusion molding silk. During the graduation project, the analysis of self-JN-A squeeze cooked rice wire-type working principle, the main pulley speed to complete a large calculation, the aging and crowded spiral helical wire speed required. Understanding of the design of the overall structure and the role of the main parts. Barrel aging aging in place there is the role of spiral from aging, overcrowded wire cylinder has put squeeze squeeze wire spiral wire from the role, adjusting the control valve can be be of good quality rice. Aperture of a different powder materials can be a variety of rough mirror, fine rice varieties article. Drawing the main parts drawing and assembly drawing. Keywords: pulley, cylinder ripening, aging spiral, crowded wire cylinder, crowded spiral wire, transmission pipe, control valve, a material powder mirror. 目 录 1 绪 论 - 1 - 1.1 引言 - 1 - 1.2 米粉条加工业的发展方向 - 1 - 1.3 米粉条生产的理论基础 - 2 - 1.4水分含量和出料粉镜的孔径对米粉条品质特性的影响 - 3 - 2 总体方案确定 - 4 - 2.1技术要求 - 4 - 2.2设计要求 - 4 - 2.3电动机的选择 - 4 - 2.4基本原理 - 4 - 2.5工艺流程 - 6 - 2.6工艺要求 - 6 - 2.7基本结构 - 6 - 3 设计与计算 - 9 - 3.1皮带传动的设计计算 - 9 - 3.2各轴的转速 - 10 - 3.3螺杆结构设计 - 11 - 3.3.1主要参数确定……………………………………………………- 11 - 3.3.2螺纹