关键词：无极变速 螺旋 给料器 变频器
Design of continuously variable speed screw feeder
Abstract: Screw feeder is a common continuous conveyor that has not flexible traction, it is one of the important and indispensable manchinery and equipment .Widely used in warious industries, such as building materials, chemicals, power, metallurgy, coal, grain etc. Apply to horizontal and inclined conveying powder, granular and small bulk materials. Does not apply to transport perishable, viscous, easy caking materials. Screw feeder make up of trough, spirocheres, bearings and drive components. Spirochete is supported of both ends of bearings and the middle suspension of bearings, divern by the dive. Continuously Variable Transmission is adjusted motor speed by changing the frequency of AC, thus changing the speed. In the speed of the process, with the impact of small, gentle to exchange rate, it is an ideal high-efficiency and high-performance speed control means. It can meet the engineering requirements of the production and can also ruduce workers labor intensity, improve productivity, to achieve material handling process mechanization and automation.
The design uses ideas and methods of optimization, through the feeder allows the complete design and calculation of transmission capacity and efficiency of a more reasonable match, transmission performance and transmission capacity of the main parameters of the analysis and use in the production and improvement of practical rationality. Subject to the design research methods of screw conveyor, theoretical analysis combined the performance of the machine to conduct a comprehensive, parameters of in-depth study. According to model selection, design parameters to determine the principles and methods of identification of aircraft for the LS-type screw conveyor. Optimization of spiral blades, combined with the actual completion of work objectives through the calculated use of R-bend helical sounded style blade, to determine the most reasonable fill factor that is feeding quantity, pitch size. With frequency converter or motor, so screw conveyor applications to improve productivity, improve quality, increase the degree of automation equipment.
Keyword: Infinitely variable Spiral Feeder Inverter
目录
1. 引言………………………………………………………（1）
2. 螺旋给料器概述
2.1 螺旋给料器的基本结构………………………………………………(2)
2.2 螺旋给料器的类型……………………………………………………(3)
2.2.1 水平螺旋给料器………………………………………………………(3)
2.2.2 倾斜螺旋给料器………………………………………………………(3)
2.2.3 垂直螺旋给料器………………………………………………………(4)
2.3 螺旋给料器的特点……………………………………………………(4)
2.4 螺旋给料器的研究现状………………………………………………(4)
2.5 螺旋给料器的发展趋势………………………………………………(5)
3. 螺旋给料器工作原理及主要构件的设计和选用
3.1 水平螺旋给料器的工作原理…………………………………………(6)
3.2. 螺旋体…………………………………………………………………(7)
3.2.1 螺旋叶片………………………………………………………………(7)
3.2.2 螺旋轴 ………………………………………………………………(11)
3.2.3 轴承 …………………………………………………………………(12)
3.2.4 机槽 …………………………………………………………………(13)
3.2.5 驱动装置 ……………………………………………………………(17)
4. 水平给料器工作过程分析
4.1 物料的运动分析和叶片的设计…………………………………………(19)
5. 总体设计计算
5.1 被输送物料的名称及特性 …………………………………………(27)
5.2 选型要求 ……………………………………………………………(27)
5.3 螺旋给料器的设计计算 ……………………………………………(27)
5.3.1 确定螺旋直径 D ……………………………………………………(30)
5.3.2 确定螺旋转速 n ……………………………………………………(30)
6. 总体尺寸设计
6.1 LS 螺旋给料器的外形及尺寸 ……………………………………(31)
6.2 附件尺寸 ……………………………………………………………(31)
6.2.1 进出料口 ……………………………………………………………(31)
7. 无级变速器
7.1 变频调速器 …………………………………………………………(33)
7.1.1 变频调速器的基本原则 ……………………………………………(34)
7.1.2 变频调速器的工作原理 ……………………………………………(35)
7.2 变频调速器的选型 …………………………………………………(37)
7.2.1 变频调速器的选用原则 ……………………………………………(37)
7.3 变频调速器的特点 …………………………………………………(41)
7.3.1 变频调速器优点 ……………………………………………………(41)
7.3.2 变频调速器的缺点 …………………………………………………(45)
结 论 ………………………………………………………(47)
参考文献 ………………………………………………………(48)
致 谢 ………………………………………………………(49)
