破碎式转筒干燥机的设计与研究（论文）

山东科技大学学士学位论文 摘 要

本毕业设计的课题来源于“山东奥诺能源科技有限公司”的产品，是在其转筒干燥机基础上进行的改进，主要设计任务是在转筒内部加入一根用来破碎大块物料的破碎轴。

本文在详述国内外转筒干燥机研究现状的基础上，对转筒干燥机内部加入一根破碎轴的本体结构进行了设计，对一些关键部分进行了设计计算。重点是破碎式转筒干燥机的破碎轴、破碎齿，破碎轴上的轴承选型，皮带的选型，和带轮的设计及校核。

本文设计的破碎式转筒干燥机采用的是直接加热的干燥方式，同时在传统转筒干燥机的内部加入一根破碎轴的基本框架；采用在破碎轴上固定多个破碎齿的方式，将破碎齿上的打刀间隙一次设计成递减趋势，这样可提供足够大的破碎能力和破碎面积，结构简单；采用皮带传动，皮带由电

机驱动。

本文对破碎式转筒干燥机的破碎轴机构，传动机构等进行了设计计算，特别是对破碎轴的弯矩，扭矩，组合力矩和第一临界转速进行了分析计算。经过校核，在一定条件下，破碎式转筒干燥机的破碎轴能够完成对转筒内部物料进行长期的连续破碎的工作。

关键词：转筒干燥机；破碎轴；破碎齿；传动机构

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山东科技大学学士学位论文 Abstract

The subject of graduation design is derived from \AoNuo Energy Technology Co., LTD.\products, is based on the equipment in the improvement, the main design task is the drum to join a root used in crushing internal large materials of broken axis.

This paper described in domestic and foreign drum drying machine based on the present research, simulating tube dryer to join a root broken internal shaft ontology of structure design, and some key parts of design calculation. Key is broken type drum drying machine of broken axle, broken tooth, the broken on the shaft bearing type selection, the belt type selection, and pulleys design and check.

In this paper the design broken type drum drying machine USES is directly heated dry way, at the same time in the traditional drum drying machine internal to join a root broken the basic framework of shaft; Used in crushing shaft fixed more broken tooth way, will break the teeth of a play knife clearance designed to decrease, which can provide a large enough of broken ability and broken area, the structure is simple; The belt drive, belt driven by a motor

In this paper, the broken type drum drying machine of broken shaft institutions, such as transmission mechanism calculation in design, especially for crushing of shaft bending moment, torque, combination torque and the first critical speed was analyzed and calculated. After checking, under certain conditions, the broken type drum drying machine to be able to complete the broken axis upon inside the tube materials of long-term continuous broken

Keywords: Drum drying machine；Broken shaft；Broken tooth；Transmission mechanism

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山东科技大学学士学位论文 目 录

摘 要 .................................................................................................... I Abstract .............................................................................................. II 目 录 ............................................................................................... III 1 绪 论 ............................................................................................ 1

1.1国内外转筒干燥技术的研究现状 .......................................................... 1 1.1.1 国内外转筒干燥机的研究现状概述 .............................................. 1 1.1.2 转筒干燥机加热方式的研究现状 .................................................. 2 1.1.3 转筒干燥机内壁面抄板形式的研究现状 ...................................... 5 1.1.4 转筒干燥机控制系统的研究现状 .................................................. 8 1.2 国内外破碎式转筒干燥机的发展趋势 ............................................... 10 1.3 本课题的研究目的及意义 ................................................................... 12

2 破碎式转筒干燥机破碎轴的方案设计 ..................................... 13

2.1破碎式转筒干燥机的功能要求 ............................................................ 13 2.1.1 破碎式转筒干燥机的工作过程 .................................................... 13 2.1.2 破碎式转筒干燥机的基本功能 .................................................... 14 2.1.3 破碎式转筒干燥机的主要设计参数 ............................................ 15 2.2破碎式转筒干燥机破碎轴的方案设计 ................................................ 15 2.2.1 破碎轴的样图形式 ........................................................................ 16 2.2.2 破碎轴的强度校核 ........................................................................ 19 2.2.3破碎轴的弯曲刚度校核计算 ......................................................... 22 2.2.4计算破碎轴的第一临界转速 ......................................................... 23

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山东科技大学学士学位论文 2.2.5破碎齿的强度校核 ......................................................................... 28 2.3破碎齿与破碎轴的联结方式 ................................................................ 35 2.4螺栓组连接设计及校核 ........................................................................ 36 2.4.1支板与固定环螺栓组连接设计 ..................................................... 36 2.4.2前后端轴与主轴的螺栓连接设计校核 ......................................... 39 2.5 破碎轴的结构设计 ............................................................................... 43

3 皮带和带轮的选型方案设计 ...................................................... 43

3.1皮带设计 ................................................................................................ 43 3.1.1确定计算功率 ................................................................................. 43 3.1.2V带带型的选择 .............................................................................. 44 3.1.3确定带轮的基准直径并验算带速 ................................................. 44 3.1.4初定中心距 ..................................................................................... 45 3.1.5选择V带的基准长度Ld0 ............................................................. 45 3.1.6验算小带轮上的包角?1 ................................................................ 46 3.1.7计算带的根数z .............................................................................. 46 3.1.8计算单根为带的初拉力的最小值?F0?min ................................... 46 3.2带轮的选型方案 .................................................................................... 47 3.2.1带轮的材料 ..................................................................................... 47 3.2.2带轮的结构形式 ............................................................................. 47 3.2.3带轮的轮槽尺寸 ............................................................................. 47 3.3对后端轴进行弯矩校核及键校核 ........................................................ 48 3.3.1后端轴弯矩校核 ............................................................................. 48 3.3.2后端轴上平键的校核 ..................................................................... 50

4破碎轴上的轴承选型方案设计 ..................................................... 50

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山东科技大学学士学位论文 4.1轴承的初步选型 .................................................................................... 50 4.2轴承座的选型 ........................................................................................ 52 4.3轴承的轴向固定方式 ............................................................................ 54 4.4轴承的润滑方式 .................................................................................... 54 4.5密封装置的选型 .................................................................................... 54

5转筒的设计及传动装置的设计 ..................................................... 55

5.1筒体的设计 ............................................................................................ 55 5.1.1筒体最小壁厚的计算 ..................................................................... 55 5.1.2筒体的载荷计算 ............................................................................. 55 5.1.3筒体弯矩与应力计 ......................................................................... 56 5.1.4筒体传动装置的设计 ..................................................................... 57 5.1.5齿轮的计算 ..................................................................................... 58 5.2筒体进出料口密封方式 ........................................................................ 60 5.1.1迷宫式密封 ..................................................................................... 60 技术经济性分析 ........................................................................................... 61

参考文献的 ........................................................................................ 62 小结 .................................................................................................... 63 致 谢 .................................................................................................. 64 附 录 .................................................................................................. 65

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