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摘要 完成絮凝過程的絮凝池(一般常稱反應(yīng)池)，在凈水處理中占有重要的地位。天然水 中的懸浮物質(zhì)及肢體物質(zhì)的粒徑非常細(xì)小。為去除這些物質(zhì)通常借助于混凝的手段，也 就是說在原水中加入適當(dāng)?shù)幕炷齽?，?jīng)過充分混和，使膠體穩(wěn)定性被壞(脫穩(wěn)）并與混凝 劑水介后的聚合物相吸附，使顆粒具有絮凝性能。而絮凝池的目的就是創(chuàng)造合適的水力 條件使這種具有絮凝性能的顆粒在相互接觸中聚集，以形成較大的絮凝體(絮粒)。因此， 絮凝池設(shè)計(jì)是否確當(dāng)，關(guān)系到絮凝的效果，而絮凝的效果又直接影響后續(xù)處理的沉淀效 果。絮凝攪拌機(jī)是絮凝池機(jī)械攪拌的裝置，它主要用于廢水處理的攪拌過程。本設(shè)計(jì)提 到了絮凝池的設(shè)計(jì)，攪拌機(jī)的設(shè)計(jì)以及其工藝流程。 關(guān)鍵詞： 絮凝池 混凝劑 沉淀效果 絮凝性能 Abstract Accomplish flocculation process flocculation pool (call reaction in general often pool) , handle middle in clean water occupying important position. Natural water suspension matter and limb matter grain diameter are very trivial.Be to dislodge these matter being backed by the means drifting along curdling generally , that is ,add the appropriate coagulant , blend through sufficiently in raw water, let colloid stability be spoiled the polymer (coming off after steady) and being situated between with coagulant water looks at and appraises an adsorption , makes a pellet have the flocculation function. But, that flocculation pool purpose is to create appropriate waterpower condition makes this have flocculation function pellet assembling, to form bigger flocculation body (catkin granule) in contacting middle mutually. But therefore, flocculation pool designs thinking that indeed or not, effect being related to a flocculation, the flocculation effect has direct impact to follow-up treatment precipitayion effect. The flocculation mixer is flocculation pool mechanical rabble device , it is used for the waste water treatment mixing process mainly. Design the design having mentioned flocculation pool originally, the mixer design and whose process flow. Keywords: Flocculation pool Coagulant Precipitayion effect Flocculation function 寧夏大學(xué) 2007 屆過程裝備與控制工程專業(yè)畢業(yè)設(shè)計(jì) 1 目錄 1 前 言 ...........................................................................................................................................1 1.1 畢業(yè)設(shè)計(jì)課題的目的、意義、國(guó)內(nèi)外現(xiàn)狀 ...................................................................................................1 1.1.1 畢業(yè)設(shè)計(jì)課題的目的、意義 ....................................................................................................................1 1.1.2 國(guó)內(nèi)外污水處理的現(xiàn)狀 ............................................................................................................................1 1.2 攪拌機(jī)在污水處理中的作用 ..............................................................................................................................2 1.2.1 攪拌機(jī)的發(fā)展概述 ....................................................................................................................................2 1.2.2 反應(yīng)攪拌機(jī)的工作原理 ............................................................................................................................2 1.3 絮凝的工作原理 ..................................................................................................................................................3 1.4 水處理中的攪拌設(shè)備 ..........................................................................................................................................3 1.5 絮凝攪拌機(jī)的適應(yīng)條件和構(gòu)造 ..........................................................................................................................3 1.5.1 絮凝攪拌機(jī)的適應(yīng)條件 ............................................................................................................................3 1.5.2 絮凝攪拌機(jī)的構(gòu)造 ....................................................................................................................................4 1.6 本課題的設(shè)計(jì)思路 ..............................................................................................................................................5 2 絮凝池的設(shè)計(jì) .............................................................................................................................6 2.1 絮凝池的設(shè)計(jì)探討 ..............................................................................................................................................6 2.1.1 絮凝的相似關(guān)系 ........................................................................................................................................7 2.1.2 假設(shè)和設(shè)想 ..............................................................................................................................................10 2.2 絮凝池的設(shè)計(jì)要求及結(jié)果 ................................................................................................................................15 3 絮凝攪拌機(jī)的設(shè)計(jì) ...................................................................................................................16 3.1 設(shè)計(jì)原始數(shù)據(jù) ....................................................................................................................................................16 3.2 設(shè)計(jì)要點(diǎn) ............................................................................................................................................................16 3.3 設(shè)計(jì)計(jì)算數(shù)據(jù) ....................................................................................................................................................16 3.4 槳葉的設(shè)計(jì) ........................................................................................................................................................17 3.4.1 槳葉結(jié)構(gòu)尺寸確定 ...................................................................................................................................17 3.4.2 攪拌器轉(zhuǎn)速計(jì)算 .......................................................................................................................................17 3.4.3 攪拌功率計(jì)算 ...........................................................................................................................................19 4 電動(dòng)機(jī)及減速器的選型 ...........................................................................................................21 4.1 減速器和電動(dòng)機(jī)的選型條件 ............................................................................................................................21 4.2 電動(dòng)機(jī)與減速器的選擇 ....................................................................................................................................21 4.4 攪拌軸的設(shè)計(jì)及其結(jié)果驗(yàn)證 ............................................................................................................................23 4.5 軸與槳葉、聯(lián)軸器的連接 ................................................................................................................................24 4.5.1 連接形式 ...................................................................................................................................................24 4.5.2 聯(lián)軸器與軸的連接 ...................................................................................................................................24 4.6 軸承的選型及軸的最終確定 ............................................................................................................................24 5 支撐裝置設(shè)計(jì) ...........................................................................................................................25 5.1 攪拌機(jī)的支承部分 ............................................................................................................................................25 5.1.1 機(jī)座 ...........................................................................................................................................................25 5.1.2 軸承裝置 ...................................................................................................................................................26 5.2 水下支撐座的設(shè)計(jì) ............................................................................................................................................26 寧夏大學(xué) 2007 屆過程裝備與控制工程專業(yè)畢業(yè)設(shè)計(jì) 2 5.2.1 軸承的選型 ...............................................................................................................................................26 5.2.2 支撐套的設(shè)計(jì) ...........................................................................................................................................27 6 軸的密封 ...................................................................................................................................28 7 結(jié) 論 .........................................................................................................................................30 符號(hào)說明 .......................................................................................................................................31 參考文獻(xiàn) .......................................................................................................................................32 謝 辭 .............................................................................................................................................33 附 件 .............................................................................................................................................41