高效二次風(fēng)選粉機（傳動及殼體部件）設(shè)計畢業(yè)論文.doc

鹽城工學(xué)院畢業(yè)設(shè)計說明書20061目錄1前言11.1選粉機的發(fā)展歷史11.1.1第一代選粉機11.1.2第二代選粉機11.1.3第三代選粉機11.2選粉機技術(shù)發(fā)展?fàn)顩r11.3選粉機發(fā)展趨勢22總體方案論證32.1課題的來源、內(nèi)容和技術(shù)要求32.1課題設(shè)計的工作原理32.2課題設(shè)計的結(jié)構(gòu)特點33具體設(shè)計說明73.1主要技術(shù)參數(shù)計算73.1.1主要工藝尺寸73.1.2生產(chǎn)能力73.1.3選粉室直徑73.1.4風(fēng)量83.1.5風(fēng)機選型83.1.6主軸轉(zhuǎn)速83.2傳動部分設(shè)計83.2.1電機的選擇83.2.2帶的設(shè)計計算93.3旋風(fēng)筒設(shè)計123.3.1旋風(fēng)筒的收塵工作原理123.3.2旋風(fēng)筒的尺寸計算133.4滴流裝置143.5內(nèi)襯153.6螺栓組連接的設(shè)計163.6.1螺栓組連接的結(jié)構(gòu)設(shè)計163.6.2螺栓組連接的受力分析173.7螺紋連接的強度計算183.7.1螺紋連接的失效形式18EX1000高效二次風(fēng)選粉機(傳動及殼體)設(shè)計23.7.2螺栓連接的強度計算183.8焊接工藝203.8.1焊接工藝的制訂原則203.8.2焊接方法的選擇203.8.3焊接材料的選擇203.8.4焊接工藝參數(shù)的選擇203.8.5焊前預(yù)熱及焊后熱處理214操作、安裝、維護及檢修234.1操作234.2安裝234.3維護234.4檢修245預(yù)期效果256結(jié)論26參考文獻27致謝28附錄29EX1000高效二次風(fēng)選粉機（傳動及殼體部件）設(shè)計摘要：為了提高水泥粉磨系統(tǒng)中選粉系統(tǒng)的選粉效率，降低循環(huán)負(fù)荷，本課題設(shè)計了水泥圈流系統(tǒng)中采用的二次風(fēng)選粉機。二次風(fēng)選粉機是在高細(xì)轉(zhuǎn)子選粉機的基礎(chǔ)上，集懸浮分散、預(yù)分級和平面渦流分級技術(shù)于一體，專為水泥磨系統(tǒng)適應(yīng)新標(biāo)準(zhǔn)而設(shè)計的專利產(chǎn)品。運用類比法，結(jié)合其他選粉機的優(yōu)點，確定殼體的整體布局方案。在適當(dāng)位置布置約束內(nèi)錐，以穩(wěn)定選粉室內(nèi)的氣體流場及增強二次選粉的效果；細(xì)粉分離與收集裝置采用高效低阻旋風(fēng)筒,提高各級細(xì)粉和超細(xì)粉的收集量。殼體的改進有利于降低系統(tǒng)風(fēng)的阻力，提高選粉效率。選粉機采用整體緊湊設(shè)計，大大降低了占據(jù)空間，且大大提高了選粉效率。機體工作運行平穩(wěn)，安裝維修方便。選粉機設(shè)計的主要特點是采用二次風(fēng)結(jié)構(gòu)，即在選粉機進風(fēng)管道上增設(shè)一個旁路支風(fēng)管，作為二次風(fēng)管，并設(shè)置一個機外調(diào)節(jié)的風(fēng)閥，二次風(fēng)氣流切向進入選粉室內(nèi)。這樣可以有效地控制上升風(fēng)速，改變和控制細(xì)度。二次風(fēng)的導(dǎo)入，對粗顆粒能進行二次鹽城工學(xué)院畢業(yè)設(shè)計說明書20063切割，改善成品的顆粒級配。關(guān)鍵詞：二次風(fēng)；高效選粉機；類比法；旋風(fēng)筒；選粉效率；約束內(nèi)錐EX1000高效二次風(fēng)選粉機(傳動及殼體)設(shè)計4DesignofEX1000highefficiencypowder-selectingmachinewithsecondaryair(transmissionandshellparts)Abstract：Inordertoimprovethepowder-selectingefficiencyofthepowder-selectingsystemincementgrindingsystem,reducecirculationload,thepowder-selectingmachinewithsecondaryairusedinthecementloopsystemisdesigned.Thepowder-selectingmachinewithsecondaryair,whichiscombinedtheaerosoldisperse,thepre-gradationwiththeplanevortexclassifiedtechnologyinabody,isspeciallydesignedtoadapttothenewstandardforcementgrindingsysteminthefoundationofthehighthinrotorpowderselectingmachine.Adoptinganalogymethodandcombiningtheadvantageofothers，theoverallarrangementschemeoftheshellisdetermined.Inordertostabletheflowfieldinpowder-selectingroomandstrengthentheeffectofsecondarypowder-selecting,constrainedinnerconeisarrangedintheappropriateposition.Thethinpowderseparationandthecollectingdeviceusethehighefficiencycoclonewithlowresistivity,thusthecollectionpropertyofthefinedustandtheultrafinedustisenhanced.Theimprovementoftheshellisofbenefittoreducetheresistanceofthesystemwindandimprovethepowderselectingefficiency.Thepowder-selectingmachineisarrangedrationallyandcompactly,occupyinglittlespaceandimprovingpowder-selectingefficiencygreatly.Itisthemaincharacteristicthatthestructurewithsecondaryairisadoptedinthepowder-selectingmachine.Bywayofsecondaryairduct,anadditionalbypasstuyereissetonair-supplylineofthepowder-selectingmachine.Inaddition,thewindvalveforadjustmentisestablishedoutsidethemachine,sothatsecondaryaircurrentsflowintopowerselectingroomincircumferentialdirection.Thismaybeableeffectivelytocontroltherisingwindspeed,changeandcontrolfineness.Becauseofinductingsecondaryair,thecoarseparticlescanbeselectedsecondly,andgraingrading