直接加熱轉(zhuǎn)筒式干燥機

直接加熱轉(zhuǎn)筒式干燥機,直接,加熱,轉(zhuǎn)筒式,干燥機 第 V 頁鞍山科技大學本科生畢業(yè)設計（論文）直接加熱轉(zhuǎn)筒式干燥機摘 要時代在發(fā)展，人類在進步。環(huán)境保護已經(jīng)越來越多的被人們所重視。解決煤燃燒產(chǎn)生的大氣污染問題是目前一個很重要也很緊迫的問題，隨著人類對煤的研究，發(fā)現(xiàn)原煤和生物量的混合物燃燒后幾乎不含有污染性氣體。本設計的目的是為無污染生物煤的生產(chǎn)提供低成本的原煤干燥設備，為生物煤的推廣打下堅實的基礎，同時也為環(huán)保事業(yè)做出貢獻。本設計采用如下方案：采用轉(zhuǎn)筒式，直接傳熱方式，主要靠對流傳熱，采取并流操作，使用高溫煙道氣作為載體。由一般異步電動機，圓柱齒輪減速器和齒輪齒圈傳動組成動力傳動裝置。由重油燃燒產(chǎn)生煙道氣，石棉做保溫層，尾氣除塵設備選擇旋風分離器。物料進、出傳送均采用皮帶傳輸機。密封方式頸向迷宮式密封。在設計任務給定后，確定了設計所需的基本參數(shù)。進行了物料衡算和熱量衡算，解決了需要消耗多少干燥介質(zhì)和熱量的問題。依據(jù)物料衡算和熱量衡算的結(jié)果計算并確定了設備的規(guī)格參數(shù)。對干燥設備作了結(jié)構(gòu)設計的詳細計算和必要的強度校核。并選擇配套的附屬裝置，如物料的傳輸方式選擇、熱風系統(tǒng)加熱方式選擇、引風機選型等，更加完善了設計的完整性。關 鍵 詞：直接傳熱，轉(zhuǎn)筒式，干燥，原煤Direct heating transfers the cylinder drying machineAbstractAs the time going ,the environmental protection is getting more and more important in the new century. The output of coal burns is one kind of the things that course the environments pollution. However, scientists find that the output of the mixture burns ,which is the raw coal and creature s mixture, hardly doesnt contains pollutions. The purpose of this design is to study out one kind of dry equipments for raw coal, which makes the first step from the raw coal to creature coal.This design adopted the tube type dehydrator ,and transmitting heat directly by the main way of convection .and in this design adopted the parallel flow operation ,used the heat flue gas to carry the heat .the general asynchronous motor, cylinder gear speed reducer and tooth ring transmission composite the power transmission apparatus .the bure of the heavy oil create the flue gas and the heat preservation lamella is made by asbestos .the same time tornado separator can remove the dust tail gases. The strap delivers, machine carries out the in and out transmissions of the material. The seal method is diameter faces the maze type seal.After the design mission given ,I made out all the data that must be compute out. To resole the problem how much medium for dry and the calorific value would be consumed, I have done the material calculates and the sum calorific value calculates. And according them I work out the specification parameter of the equipment. And more I have made some additional deal design, such as hot blast system and the breeze machine etc ,which made the design more perfect the complete.Key Words:Transmit heat directly , cylinder ,Dry , Raw coal 目 錄1 緒論11.1干燥技術的概況11.2干燥技術發(fā)展的總趨勢21.3干燥器的分類和選型31.3.1干燥器的分類31.3.2干燥器的選型31.4回轉(zhuǎn)圓筒干燥器的特性41.5回轉(zhuǎn)圓筒干燥器在工業(yè)上的應用51.6回轉(zhuǎn)圓筒干燥器的設計概論52 設計初始參數(shù)的確定72.1已知參數(shù)7 2.2其他所需參數(shù)的確定72.2.1并流適用于下列物料的干燥72.2.2逆流方式適用于下列物料72.3混合氣的參數(shù)計算123 物料衡算和熱量衡算143.1水分蒸發(fā)量143.2空氣消耗量144 設備規(guī)格參數(shù)的設計和確定164.1筒體直徑164.2容積散熱系數(shù)164.3筒體長度164.3.1預熱段長度164.3.2蒸發(fā)段長度184.3.3加熱段長度184.4轉(zhuǎn)筒得轉(zhuǎn)速喝傾斜度得選擇194.4.1轉(zhuǎn)速194.4.2筒體地斜度194.5停留時間194.6填充系數(shù)204.7熱風系統(tǒng)加熱形式的選擇214.8鼓風機或引風機的選型214.9旋風分離器和進、出料裝置225 回轉(zhuǎn)圓筒干燥器的結(jié)構(gòu)設計與計算245.1筒體設計24 5.1.1筒體結(jié)構(gòu)組成24 5.1.2筒體載荷計算29 5.1.3筒體彎矩與應力計算32 5.1.4筒體變形計算355.2滾圈設計385.2.1滾圈的結(jié)構(gòu)型式385.2.2滾圈的設計與計算395.3托輪及軸承設計41 5.3.1結(jié)構(gòu)設計41 5.3.2托輪及軸承的計算425.4擋輪及軸的設計465.4.1擋輪465.4.2擋輪受力465.4.3擋輪參數(shù)的確定475.4.4擋輪軸及軸承的選擇485.5傳動裝置的確定設計依據(jù)49 5.5.1電動機選型495.5.2齒輪配置495.5.3傳動裝置計算505.6減速器的選型53 5.6.1按強度選用減速器53 5.6.2校核熱功率535.7聯(lián)軸器的選型545.7.1聯(lián)軸器的計算轉(zhuǎn)矩545.7.2聯(lián)軸器的工作轉(zhuǎn)速545.7.3軸孔直徑545.8進、出料端設計546 回轉(zhuǎn)圓筒干燥器的密封567 回轉(zhuǎn)圓筒干燥器的安裝、調(diào)整和運轉(zhuǎn)578 經(jīng)濟性分析58結(jié)論與思考60致謝61參考文獻62