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论文编号:ZD986 论文字数:8870,页数:24
摘 要
针对目前常规的油烟机存在油烟排气管道封闭不严而导致的油烟倒灌的问题，主动式密闭装置运用机电一体的手段，结合位置检测技术与电机控制回路，实时反馈管道密闭状况，并在现有电动碟阀的密封结构的基础上，对管壁与碟板的结构进行改进，改善了管道的密封性，延长了弹性密封圈的使用寿命。针对现有密封装置结构上存在的不足，该装置密封结构采用偏心结构，结合弹性密封技术，确保了排气管道的完全密封，并通过碟板与外沿阶梯状设计契合紧压密封圈，有效的减少密封圈的磨损与变形，延长了密封圈的使用寿命。
关键词 主动式；偏心碟阀；水平结构；管路密闭
Abstract
View of the current existence of the conventional fume hood exhaust pipe closed strictly a result of smoke intrusion problem, active use of airtight device a means of mechanical and electrical integration, combined with position sensing technology and motor control circuit, real-time feedback channels in a closed state, and at the present electrical disc valve seal structure, based on the right wall and the disc plate to improve the structure, improving the tightness of the pipeline to extend the life of the elastic ring. Sealing device for existing structural weaknesses, the device sealing structure using eccentric structure, combined with flexible sealing technology to ensure complete sealing of the exhaust pipe, and through disc plate and the outer edge of ladder-like design of compacted ring fit and effective reduced seal wear and deformation, extending the life of seals.
Keywords active；eccentric butterfly valve；aclinic configuration；pipe closing
目 录
摘要 ……………………………………………………………………………. . .……………Ⅱ
Abstract………………………………………………………………………. . .……………Ⅲ
1 前言……………………………………………………………………………………….…...1
2 总体方案的概述与分析…………………………………………………………….…. . ..2
2.1 主动密闭装置的组成 ………………………………………………………. ……..…2
2.2 电机驱动控制方案……………………………………………………………….... . ...3
3 密闭装置主要结构及器件选择……………………………………………….………... .4
3.1 油烟机的结构及密闭装置的安装位置 ……………………………………………. .4
3.2 驱动电机的选择 ………………………………………………………….…………. 4
3.2.1 直流电机方案…………………………………………………………………..5
3.2.2 交流电机方案………………………………………………………. . ………..7
3.2.3 方案的选择……………………………………………………………………..8
3.3 机械结构…………………………………………………………………………. .…..8
3.3.1 垂直结构………………………………………………………………………..8
3.3.2 水平结构 ………………………………………………………………………8
3.3.3 结构的选择 ……………………………………………………………………9
4 密闭机构的设计…………………………………………………………………………..10
4.1 电动蝶阀的主要应用环境……………………………………………………………10
4.2 电动蝶阀的结构及其工作特性………………………………………………………10
4.3 普通电动式蝶阀的密闭结构的缺陷………………………………………………….11
4.4 电动式蝶阀的密闭方式及缺陷……………………………………………………….11
4.5 改进方法……………………………………………………………………………….11
4.5.1 结构缺陷的改进方法…………………………………………………………..11
4.5.2 密封方式的改进方法…………………………………………………………..12
4.6 转动轴的密封………………………………………………………………………….12
5 检测器件 ……………………………………………………………………………….….13
5.1 限位开关………………………………………………………………………………13
5.2 行程开关………………………………………………………………………………..13
5.3 微动开关 ………………………………………………………………………………13
5.4 开关的选择 ……………………………………………………………………………13
6 加工工艺及装配 …………………………………………………………………. .. .……14
5.1 加工工艺…………………………………………………………………….…………14
5.2 装配………………………………………………………………………….…………15
7 总结 …………………………………………………………………………….……………16
致谢 ……………………………………………………………………………….……………...17
参考文献 ………………………………………………………………………………………...18
附录1……………………………………………………………………………………………...19
附录2……………………………………………………………………………………………...20
