化学农药的计量泵设计

FeSO4池－－计量泵－－电磁阀－－－－絮凝池

                                           
PAM池－－－计量泵－－电磁阀－－－－絮凝池

PAM的投加量最好是20－50mg/L ，计量泵可以选进口的，国产的话推荐上海春姜的。

目前我国农民采用的农药搅拌多数是在充好药液的药筒内用传统手工搅拌，劳动强度高，搅拌效果差，而且药物挥发严重影响农民的身体健康。有的甚至用喷雾器的喷嘴回流冲击以达到搅拌的效果，水药没有充分搅匀就立即喷雾。殊不知药水搅拌不均不仅不能达到农药的预期效果，而且还耽误了治理时机。因此本文研究设计了一种新型搅拌装置——射流搅拌装置，对化学农药的搅拌具有重要意义。
That the pesticide that our country peasant adopts at present stirs majority is that handwork stirs , labour intensity height , difference, moreover medicine stirring effect volatilize the keep healthy affecting a peasant's gravely within the cartridge case finishing charge drug-dip with tradition. Some spray nozzle back-flow even with the sprayer pounds to reach the effect stirring , water medicine does not stir even sufficiently right away immediately spraying. Hardly realize that liquid medicine stirs anticipating that being not able to not reach a pesticide without exception not only effect, and delay govern opportunity. Therefore the main body of a book study the device having designed that one kind of new model stirs device jet current mixing , have importance to the chemical medicine mixing.

本文对环流理论及其数学模型进行了研究，设计出一种满足液-液、固-液药液基本混合要求的搅拌装置，并对其所产生的搅拌流场进行了CFD数值模拟，对搅拌装置进行了实验研究，以下是本文所做的主要工作和研究成果：
Theory and their mathematic model has carried out the main body of a book on circular current studying , the drug-dip designing that a kind of satisfies liquid- liquid , strengthens- liquid out has blent the mixing device demanding basically , the numerical value having carried out CFD on mixing flow distribution produced by whose has imitated and, the experiment having been in progress to stirring a device studies the following is main job and research results done by the main body of a book:

1．介绍了国内外搅拌技术的研究现状，与其它搅拌技术比较，射流搅拌具有搅拌效率高、防脱流能力强、能耗低等特点；
1 has introduced the current situation stirring the technology go into at home and abroad , the ability stirring technology comparison , jet current mixing having the height stirring efficiency , defending against to take off a stream has been strong , energy consumption has waited for a characteristic low with other;
2．通过对流体混合理论和搅拌叶轮设计理论进行了研究，基于环流理论设计法，总结出一种较合理的搅拌装置；
2 studies by blending theory to the fluid and stirring an impeller designing that theory has been in progress , sums up out one kind of more rational mixing device owing to that circular current theory designs law,;
3．利用Pro/ENGINEER三维软件对搅拌装置进行了三维造型；应用Gambit网格划分软件对搅拌流场进行非结构网格划分；
3 makes use of the three-dimensional software of Pro/ENGINEER to have carried out solid modeling on to stirring a device; The software the net lattice applying Gambit is divided is divided to the structure net lattice stirring a flow distribution carrying out mistake;

4．利用FLUENT软件对搅拌流场进行了数值模拟，通过改变搅拌系统输入流量和压力，对数值模拟结果进行对比分析发现：在相同叶轮直径的情况下，输入流量越大对搅拌流场的推进速度越大，且分布较均匀，总体效果较好。因此在设计中，需适当地增加药泵的压力，这对搅拌装置的搅拌效果有一定的影响。