摘 要

本文通过对我国智能对靶喷雾机及风送系统技术发展现状的研究发现，我国林木种苗面积很大，而且以经济林果为主，但是病虫害又严重威胁着树木的生长以及林果的产量与质量。常规的农药喷雾装备常常会带来一系列的问题，比如说药液利用率低，污染生态环境等，因此要改变这样的状态。施药技术需要不断的往高效减污的方向开发，与此同时还要研制出相应的机具，达到减少施用农药的目的，保护了生态环境也减轻了对人体的伤害。

本文针对智能对靶喷雾机风送系统的设计。设计之初，了解风送系统的结构组成及每个部件的用途，并清楚了解风机性能参数表达的物理意义及其符号单位。设计之时，要计算每个零件的参数，方便绘制出二维图形。先对叶轮设计，确定叶片入口参数、叶片数、叶轮出口宽度等，还要绘制轮盖型线及叶片型线，强度的计算和材料的选用也不可缺少。其次设计集流器和蜗壳，绘制出蜗壳型线并计算蜗壳内损失，最后进行主轴的设计，确定出主轴的材料。最后将风送系统的总体图用二维图表现出来。此方案目的是优化风送系统的结构，改善喷洒效果，从而提高我国苗木、林果机械的现代化、智能化水平。

关键词：风送系统；喷雾机；喷洒；风机；智能化

Smart to target sprayer wind system design

ABSTRACT

This article through to the intelligence on target sprayer and pneumatic conveying system technology development status quo of the study found that there is a big area of forest tree seedlings and give priority to with economic fruit, but the plant diseases and insect pests and serious threat to the growth of trees and the fruit yield and quality. Conventional spray equipment often leads to a series of problems, such as low utilization rate of liquid, the pollution of ecological environment and so on, so must change this state. Drug-delivery technology constantly to high efficiency reducing the pollution in the direction of development, at the same time also developed a corresponding machine, reach the purpose of reducing the pesticide, protect the ecological environment and to reduce the harm to human body.

Based on intelligent target sprayer for pneumatic conveying system design. At the beginning of the design, understand the structure of the pneumatic conveying system and each part USES, and the understanding of the physical meaning of fan performance parameters of the expression and its symbolic unit. Design, calculates the parameters of each parts, convenient to draw 2 d graphics. To impeller design, first determine the blade inlet parameters, leaf number, the impeller outlet width, etc, but also draw round cap line and blade type line, strength calculation and the selection of materials are also indispensable. Second design current collector and the volute, map the volute type line and calculate the loss in the volute, finally the design of the main shaft, the material of the spindle. Finally sending wind system of the overall figure with 2 d figure. This plan is designed to optimize the structure of the pneumatic conveying system, improve the effect of spraying, thus improve the nursery stock, woods and machinery in our country modernization, intelligent level.

Key words: air conveying system; Spray machine; Spraying; Fan; intelligent

目 录

第一章 绪论······································································1

1.1选题背景及意义······································································1

1.2国内外研究现状······································································2

1.2.1国外研究现状··································································2

1.2.2国内研究现状··································································5

1.3本文研究内容·········································································7

1.4本章小结···············································································8

第二章 智能对靶喷雾机风送系统总体设计·······························9

2.1智能对靶喷雾机······································································9

2.2风送系统的总体结构·······························································10

2.2.1通风机的结构及主要部件··················································10

2.2.2通风机的性能参数···························································11

2.3本章小结··············································································12

第三章 叶轮设计·······························································14

3.1转速、叶片出口角与轮径的确定···············································14

3.2确定叶轮入口参数·································································14

3.3确定叶片数··········································································15

3.4计算叶轮出口宽度·····························································16

3.5计算滑移系数和理论压力························································16

3.6叶道入口和出口速度的计算·····················································17

3.7验算通风机的压力·································································18

3.8效率估算·············································································18

3.9轮盖型线绘制·······································································19

3.10叶片型线绘制······································································20