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东北大学毕业设计（论文） 摘要

由此探讨HG2.0×20回转圆筒干燥机的结构设计。

由于该机型已在工业中有应用，因此本文在设计时引用了其他一些设计老师的实验方法和结论。

关键词：干燥机，回转圆筒，结构设计- iii -

东北大学毕业设计（论文） Abstract

Abstract

Drying technology applications in China has a long history. The world-famous paper, shows the drying technology applications. After the liberation, drying technology applications developed very quickly, and the early 1950s, the state dispersed suspension technology (such as air dryers, etc.) industrial applications, drying technology research work carried out, the dryer is also efficient production and application.

With the progress of industrial modernization, the chemical industry mechanization and large-scale and raising the level of automation, as the chemical unit operation equipment, one of the dryer and will also developed rapidly. In China, although the application of drying equipment has been several decades of history, but drying equipment manufacturing is the peak of the last 20 years thing. In the past 20 years, the majority of engineering and technical personnel to develop a number of imitation or drying equipment, the majority of China's industrialization model can be processed, the basic reverse the drying equipment imported by the situation. Training a large number of dry technical staff, also emerged a large number of drying equipment manufacturing enterprises.

Dry is the material elimination moisture content or other volatility ingredient operation, the affected area is very broad. Along with the production development, had a higher request to the dry technical drying equipment's demand. Because the original industry foundation is weak, the output is small, the majority uses electricity the drying oven steam drying oven and so on dry material.In order to meet the needs of industrial and agricultural production, in the spray, and air flow, such as drying, and the development and installation of agricultural products, food, medicines, biological products, such as the drying process and device research and development work. Rotary cylinder dryer also be born.

Rotary cylinder dryer is the oldest one of the drying equipment, equipment structure simple and easy to use. Are still being widely used in chemical industry, building materials and metallurgy, and other fields. This paper will further the design of the structure of its rotating cylinder dryer on the structure of the shell, the shell and its load calculation moment and stress calculations, and detailed description of the rotating cylinder dryer rolling circle design, support Structural design, transmission gear and parameters of the calculation. It is the working principle of wet materials from the conveying belt or bucket elevator to the hopper, from the feed I joined. Drum dryer and the principal is slightly tilted to the rotary cylinder body. Materials into the internal cylinder, and through the barrel of hot air down into contact with the heating or counter-current or effective contact with the wall was dry and dried

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东北大学毕业设计（论文） Abstract

products from the other side of the lower part of the material. In the process of drying, the material through the use of slow rotating cylinder, in the role of gravity from the high-end mobile to the lower end. Extinguishers installed in wall-to-copy, it also continued to cast Chaoqi materials, so that the hot surface materials greatly enhance and improve the drying rate and materials to move forward. Heat carrier (hot air, flue gas) dry materials, collected through the cyclone to attach the dust after emptying.

This article is based on the basic principles of drying process, other models for the characteristics and the needs of the community, have been successful examples of design on the basis of information before the designer's experience and conclusions of the design. In the design, to HG2.0 × 20 rotating cylinder dryer to study, analyze it and the other dryer, as well as the different characteristics of the existing problems, which explore HG2.0 × 20 rotating cylinder dryer design of the structure .

As the models in the industry in the application, the paper quoted the design of a number of other design teacher's method and conclusions.

Key words: Dryer，Rotary cylinder，Structural Design

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东北大学毕业设计（论文） 目录

目 录

毕业设计（论文）任务书 ···································································· i 摘 要 ··························································································· ii Abstract ································································································ iv 第1章绪论 ··························································································· 1

1.1干燥技术的概况 ·················································································· 1 1.2干燥原理 ···························································································· 2 1.3被干燥物料及干燥介质的特性 ···························································· 3

1.3.1被干燥物料的特性 ·········································································· 3 1.3.2干燥介质的特性·············································································· 4

1.4干燥过程的节能 ·················································································· 4

1.4.1干燥装置的能量利用率 ···································································· 4 1.4.2干燥器的热效率·············································································· 5 1.4.3干燥操作的节能途径 ······································································· 5

1.5干燥器的分类与选择 ·········································································· 5

1.5.1干燥器的分类 ················································································· 5 1.5.2干燥器的选型 ················································································· 6

1.6干燥技术的进展 ·················································································· 6

1.6.1干燥设备研制向专业化方向发展 ························································ 6 1.6.2干燥设备的大型化、系列化和自动化 ·················································· 6 1.6.3改进干燥设备，强化干燥过程 ··························································· 7 1.6.4采用新的干燥方法及组合干燥方法 ····················································· 7 1.6.5降低干燥过程中能量的消耗 ······························································ 8 1.6.6闭路循环干燥流程的开发和应用 ························································ 9 1.6.7消除干燥操作造成的公害问题 ··························································· 9

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东北大学毕业设计（论文） 目录

第2章回转圆筒干燥机简介 ······························································ 11

2.1回转圆筒干燥机的工作原理 ······························································· 11 2.2回转圆筒干燥机的特点 ······································································ 13

2.2.1回转圆筒干燥机的优点 ··································································· 13 2.2.2回转圆筒干燥机的缺点 ··································································· 13

2.3回转圆筒干燥机流向的选择 ······························································· 13

2.3.1并流 ···························································································· 13 2.3.2逆流 ···························································································· 13 2.3.3并逆流组合 ··················································································· 14

2.4载热体的选择 ···················································································· 14 2.5回转圆筒干燥机的分类及适用范围 ···················································· 15

2.5.1直接加热转筒干燥器 ······································································ 15 2.5.2间接加热转筒干燥器 ······································································ 18 2.5.3复式传热干燥器············································································· 19

2.6抄板 ·································································································· 20

2.6.1升举式抄板 ··················································································· 20 2.6.2均布式抄板 ··················································································· 20 2.6.3扇形式抄板 ··················································································· 21 2.6.4蜂巢式抄板 ··················································································· 21

第3章回转圆筒干燥机结构设计与计算 ·········································· 23

3.1已知条件 ··························································································· 23 3.2物料衡重和热量衡重 ········································································· 23

3.2.1水分蒸发量 ··················································································· 23 3.2.2空气消耗量 ··················································································· 24

3.3设备参数计算和确定 ········································································· 25

3.3.1转筒的转速n和倾斜率S的选择 ······················································· 25

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