JIANGSU UNIVERSITY本科毕业设计设计说明书题目轴流立式料浆泵学院名称：能源与动力工程学院专业班级：学生姓名：学号：毕业设计导师：2008 年 06 月目录第一部分内容摘要————————————————3 第二部分概述—————————————————5 第三部分设计方案及原理说明———————————9 第四部分水力设计————————————————10 第五部分结构设计————————————————19 第六部分重要部件的校核—————————————23 第七部分参考文献————————————————29 第八部分毕业设计小结——————————————30第一部分内容摘要内容摘要轴流泵流量大，扬程低，比转速高，轴流泵的液流沿轴方向流动，但是其设计的基本原理与离心泵基本相同。
轴流泵大多是单级的立式的，可以分为固定叶片式和可调叶片式两种。
本毕业设计的项目是可调叶片式轴流泵——即叶片可调节倾斜角度。
本毕业设计的内容属于化工泵，只有大致工况设定，没有具体工作环境说明几要求，大致要求材料要有一定的耐腐蚀性能。
此外，化工泵广泛应用于多种场合。
化工泵既有离心式的，也有轴流式的，既有立式的，也有卧式的，既有单级的，也有多级的，应不同场合而定。
本毕业设计要求为设计轴流立式料浆，这就决定了设计方向为：化工、立式、单级、轴流。
泵主要由泵体、传动轴和传动装置等组成。
传动专制是将原动机的动力传递给泵轴的中间装置。
泵设计最主要的是水力设计——叶片及导叶的水力设计。
叶片的水力设计采用两种方法：圆弧法和升力法。
经分析比较：采用圆弧法设计的轴面投影图叶片更为光滑，难度相对更高。
采用升力法设计的轴面投影图虽然比圆弧法设计的稍微差点，但是，由于当今国内的制造水平对于三维曲面的加工还相对落后，即使是好的设计也是难以加工出来的，对于空间曲面加工效果好的机床是五轴联动机床，国内包括在国内的外企，拥有五轴联动机床的公司屈指可数。
回头来看升力设计法，这种水力设计法虽然可能相对简陋，但是它简单实用，可操作性强，更加适合初级设计人员，对于本科毕业生来说是更好的操练工具。
导叶则采用的是流线设计法。
由于导叶是按锥面分流线，所以设计为空间导叶。
水力设计之后是结构设计。
结构设计决定着泵的受力情况，影响到泵的许多零件的强度问题，所以也是相当重要的。
此次设计主要依据关醒凡教授的《现代泵设计手册》进行水力设计，所有图纸均采用AutoCAD软件绘制。
AbstractAxis pumps are type of blade pump with great flux, lower head, high, fluids flow from axis pumps along the axis, but the basic theory used to design it is conformed to one in centrifugal pumps. Axis pumps always are monopole, and they can be setted into immobility blade and adjustable blade.The object of the graduate design is to design an adjustable pump--just as what it is said that its blades are adjustable-pitches. The pump I am going to design attributes to the chemical pumps, and the given conditions are mistiness, I am not going to say that the design assignment which my teacher disposed is confusing, but to say that the environment of the design is a dale. Though it is so board a dale, it requires me clear about the general direction, it is that the stuff of the pump asks for somehow anti-high-temperature, incorrupt, and so on. Chemical pumps are used abroad like everyone knows.Chemical pumps not just contain centrifugal ones, but also axis ones, not only horizontal but also stand-style, and include both of monopole and multilevel, when to use some kind of pump depends on live condition. My design assignment requires me to design a stand-style pump dealing with slurry, and it definitudes my work: chemical, stand-style, monopole, adjustable axis.Pumps are constituted with pump body, driving axis and driving devices, and so on. The driving devices are intermediary setting used to drive energy from motor to pump axis.The most important step in designing a pump is waterpower design-the design of the blades and lead blade. There are always two methods to be used to design pump cycle method and peace method. Put the two together: we find that the result after cycle method is better, the blades designed with it are more velvet, but it is more difficult. Compared with the cyclemethod, although the peace method is simple, however for present, manufacturing level is not component in three-dimensional products producing. I think there must be standout engineering, good conceive and good design home, but why all these advantage things can’t come to true, mainly because I think that there are a fat lot five-axis linkage machines in domestic companies, even includes external corporations in China. And let me look back to the peace method, although the method could be simper, it is more practically, be easy to deal with, and it is more suitable for the first class personnel, and is a practice tool.The lead blades are going to design with streamline method. Because the lead blades are partitioned through cone, so it will be designed into vacuum lead blade, and adopt the twist triangle method to product. Configuration design follows waterpower design. Configuration design determines the pressed conditions of pump, and it will impact much most intention of the part, so it is also very important.The design of hydraulic computation is on the basis of <Modern pump design handbook> edited by professor Guan Xingfan. All the drawings adopt the software of AutoCAD.第二部分概述一、设计依据1、设计参数：流量 Q＝ 850 ( m3/h )扬程 H＝ 3.5 (m)转速 n＝ 1450 ( r/min )效率 ≧75℅汽蚀比转速C≧10002、料浆密度：ρ＝1500( kg/m3 )3、固相物质：五氧化二磷，重量浓度30℅左右4、结构形式：采用60°出水弯管，叶片调节形式为半调节5、泵的液下长度： 1.0 (m) （底板至叶轮中心距离）二、设计内容1、文献检索、市场调研通过对国内外相关文献的检索和国内市场调研，了解目前所设计类型泵的特点和研究情况，熟悉其水力设计方法，对比分析几种主要结构形式的优缺点，确定设计方案。
综合文献检索和市场调研的结果，写出调研报告。
2、外文资料翻译外文资料翻译应通顺、正确。
3、水力设计掌握所设计类型泵的水力设计方法，按照给定设计参数进行水力设计，绘制木模图。