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机械设计制造及其自动化论文，论文编号:JX1451 论文字数:5594.页数:19 附CAD图
摘 要
泵是一类将原动机所做的功转化成功被输送流体的压力能、位能和动能的流体机械，属于通用机械范畴，在国民经济各个行业得到广泛应用。离心式单相潜水电泵是将电动机和离心泵组合在一起潜入水中工作的提水工具，其主要特点是机泵合一，不用长度传送轴，体积小、质量轻，电动机和水泵均潜入水中，不需修建地面泵房，移动方便，不用灌引水，操作方便，适应性强，适用于城市给排水、农业灌溉和建筑工地等工程中大量使用。进水节配置格栅（滤网），防止含有固体物的杂质液或污水污物进入泵内堵塞流道，主要为清水的水力输送，使用220V单相电。QDX3-18-0.55离心式单相潜水电泵是小型潜水电泵系列产品中的一个常用规格。
本文分析了QDX3-18-0.55离心式单相潜水电泵的结构和工作原理，并根据泵的设计参数，计算出叶轮、压水室和电机体等水力结构参数。根据安全性与可靠性，贯彻标准化和规范化，合理确定和选择密封型式、电机体形式和各零配件材料，采用机电同轴直连结构形式。电机位于电泵上部，泵头位于电泵下部。叶轮安装在泵壳内，并紧固在泵轴上，泵轴由电机直接带动。
关键词：离心泵 特性 设计
Abstract
Pump is a kind of transformation of the original motivation of the work done by the successful transmission fluid pressure energy, potential energy and kinetic energy of fluid machinery, general machinery belonging to the scope of the national economy has been widely used in various industries.Single-phase submersible centrifugal pump is the motor and pump combined with the work of carrying water into the water tool, its main feature is the pump one, not the length of transmission shaft, small size, light weight, motor and pump are submerged into water without ground pumping station construction, easy to move, not filling water, easy to operate, adaptable for urban water supply and drainage, agricultural irrigation and construction sites and other projects in large quantities.Inlet section configuration grid (mesh) to prevent solids containing impurities in liquid or sewage pump sewage into the plug flow, mainly for clear water of the hydraulic conveyance, use 220V single-phase power. QDX3-18-0.55 single-phase submersible centrifugal pump is a small submersible pump in a common product specifications.
This paper analyzes the QDX3-18-0.55 single-phase submersible pump centrifugal structure and working principle of the design parameters according to the pump, calculate the impeller, pressure water chamber and the hydraulic motor and physical structure parameters. This according to the pump design parameters, calculate the impeller, pressure water chamber and the hydraulic motor and physical structure parameters. According to the safety and reliability, standardization and implementation of standardized, reasonable identification and selection of seal types, electrical body parts form and materials, using electromechanical coaxial direct link structure.Pump motor is located in the upper part of the pump head at lower electric pump. Impeller installed in the pump shell and tighten the pump shaft, the shaft directly driven by the motor.
Keywords：Centrifugal pump Feature Design
目 录
中文摘要.....Ⅰ
英文摘要.....Ⅱ
目录Ⅳ
绪论..1
研究背景......1
研究方法与系统描述.....1
离心式潜水电泵的结构与原理.......2
2.1 离心式潜水电泵的结构...2
2.2 离心式潜水电泵的原理...3
离心式潜水电泵的工作设计计算.....5
3.1 主要参数设计计算.......5
3.2 离心泵叶轮线性尺寸计算.5
3.3 蜗壳计算......7
3.4 电机选择......8
3.5 主轴与轴承的设计与校核...... ..10
3.6 密封选择.....13
总结.14
参考文献.....15
致谢16
