8m搅拌型酸奶发酵罐设计
摘要
本文主要介绍了8m搅拌型酸奶发酵罐的主要设计步骤。在工艺计算中,大致计算了发酵罐筒体的筒径,高度。选定了封头形状,确定了夹套高度和搅拌桨叶的分布。对搅拌功率进行了试算,选定了电机功率。参照相关的标准和参考资料对发酵罐受内外压情况下的筒体壁厚,封头壁厚,受内压的夹套壁厚进行设计计算。对支座,凸缘,安装底盖,法兰,人孔等进行了选型。参考《机械搅拌设备》对搅拌桨进行了设计和强度校核。同时,按扭转变形,根据临界转速,强度计算,和轴封处允许的径向位移四种方法对轴径进行计算和强度校核。参照国标规则,运用等面积补强的方法对接管开孔进行了开孔补强,最后对搅拌设备的制造,检验安装进行了简要说明
设计结果:设计出了工作容积为8m3的发酵罐,筒体材料为,内筒壁厚为,内径为,夹套厚度为。筒体高度,采用机械密封及三层搅拌桨形式搅拌。机架采用机械密封和单点支架的配合,支座采用支撑式支座支座。搅拌轴轴径为。
关键词:发酵罐;搅拌桨;搅拌轴;
Thedesig
nof10cubicmetersferme
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nk Abstract:Ferme
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nfood,chemicala
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ndustries.Besides,theFerme
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nktakesalargeplacei
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nteraredetailedi
ntroducedi
nthispaper,a
ndIchoosethedesig
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ndstre
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nmyopi
nio
ns,myresearchwillhaveacertai
nsig
nifica
ncei
npracticale
ngi
neeri
ngdesig
n. I
ntheprocesscalculatio
n,thediametera
ndheightofthecyli
nderoftheferme
ntorwereroughlycalculated.I
nthispart,ihasalsosclectedtheshapeoftheheada
ndhaveco
nfirmedtheheightofthejack,thepositio
noftheimpeller.thestirri
ngpowerwascalculateda
ndthemotorpowerwasselected.Withrefere
ncetothereleva
ntsta
ndardsa
ndrefere
ncematerials,thewallthick
nessofthecyli
nder,thewallthick
nessofthehead,a
ndthewallthick
nessofthejacketsubjectedtoi
nter
nalpressurearedesig
neda
ndcalculatedfortheferme
nteru
ndertheco
nditio
nsofi
nter
nala
ndexter
nalpressure.Also,Idesig
neda
ndcheckedthestre
ngthofthemixi
ngpaddle.Thetypeofbeari
ng,fla
nge,bottomcover,fla
ngea
ndma
nholeareselected.Atthesametime,accordi
ngtothefourways,i
ncludi
ngtorsio
naldeformatio
n,thecriticalspeed,stre
ngthcalculatio
n,a
ndtheradialdisplaceme
ntallowedattheshaftseal,Icalculatetheshaftdiametera
ndcheckthestre
ngth.Withrefere
ncetothe
natio
nalsta
ndardrules,theope
ni
ngofthe
nozzlewasrei
nforcedbythemethodofequalarearei
nforceme
nt.I
nthee
nd,Ididasimplei
ntroductio
naboutthema
nufacture,i
nspectio
na
ndi
nstallatio
nofthemixi
ngequipme
nt. Desig
nresult:Ihavedesig
nedaferme
ntatio
nta
nkwithaworki
ngvolumeof10.Thecyli
nderbodymaterialisS30408.Thei
n
nerwallthick
nessis14mm.Thei
n
nerdiameteris1800mma
ndtheheightofthecyli
nderbodyis3900mm.Theequipme
ntismecha
nicallysealeda
ndstirredi
ntheformofathree-layermixi
ngpaddle.Therackisequippedwithamecha
nicalseala
ndasi
nglepoi
ntbracket,a
ndthesupportissupportedbyasupportbracketa
ndthestirshaftdiameteris130mm. Keywords:Ferme
ntatio
nta
nk;impeller;Agitatorshaft; 目录 中文摘要Ⅰ 英文摘要Ⅱ 1前言1 1.1设计任务1 1.2发展趋势1 1.3结构和材料选择1 2工艺计算2 2.1确定筒体内径2 2.2确定上下封头几何参数2 2.3重新确定筒体高度2 2.4轴封损耗功率计算3 2.5单个搅拌桨功率计算3 2.6三层搅拌桨功率计算4 2.7接管计算5 2.8搅拌罐工艺参数5 3结构强度计算6 3.1受内压的筒体壁厚计算6 3.2受外压的筒体壁厚计算6 3.3封头内压计算10 3.4封头外压计算11 3.5带夹套筒体的壁厚计算12 3.6带夹套封头的壁厚计算12 3.7支座选择13 3.8法兰的选择16 3.9安装底盖的选用17 3.10机架的选择18 3.10人孔选择19 3.11密封形式20 4搅拌轴设计21 4.1按扭转变形计算搅拌轴直径21 4.2根据临界转速校核搅拌轴轴径21 4.2.1搅拌轴有效质量计算21 4.2.2圆盘有效质量计算22 4.2.3单跨轴一阶临界转速的计算23 4.3按强度计算搅拌轴的轴径25 4.4应按轴封处允许径向位移验算轴径28 5搅拌桨计算29 5.1确定搅拌桨设计功率29 5.2每层搅拌桨的设计功率29 5.3搅拌桨桨叶材料的许用应力30 5.4圆盘涡轮式搅拌桨计算30 6接管开孔补强31 7制造、检验、安装、使用、维修38 7.1轴的加工要求38 7.2搅拌器加工要求38 7.3搅拌设备壳体的制造要求及检验38 7.4搅拌轴的试运转38 8结束语39 参考文献40 致谢41
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nof10cubicmetersferme
ntatio
nta
nk Abstract:Ferme
ntatio
ntech
nologyhasbecomea
ni
ndispe
nsabletech
nologyi
nfood,chemicala
ndpharmaceuticali
ndustries.Besides,theFerme
ntatio
nta
nktakesalargeplacei
nFerme
ntatio
nprocess.Themai
nstepsi
nthedesig
nofa10cubicmeterferme
nteraredetailedi
ntroducedi
nthispaper,a
ndIchoosethedesig
na
ndstre
ngthcheckoftheagitatorshaftasmymai
nresearchdirectio
n.I
nmyopi
nio
ns,myresearchwillhaveacertai
nsig
nifica
ncei
npracticale
ngi
neeri
ngdesig
n. I
ntheprocesscalculatio
n,thediametera
ndheightofthecyli
nderoftheferme
ntorwereroughlycalculated.I
nthispart,ihasalsosclectedtheshapeoftheheada
ndhaveco
nfirmedtheheightofthejack,thepositio
noftheimpeller.thestirri
ngpowerwascalculateda
ndthemotorpowerwasselected.Withrefere
ncetothereleva
ntsta
ndardsa
ndrefere
ncematerials,thewallthick
nessofthecyli
nder,thewallthick
nessofthehead,a
ndthewallthick
nessofthejacketsubjectedtoi
nter
nalpressurearedesig
neda
ndcalculatedfortheferme
nteru
ndertheco
nditio
nsofi
nter
nala
ndexter
nalpressure.Also,Idesig
neda
ndcheckedthestre
ngthofthemixi
ngpaddle.Thetypeofbeari
ng,fla
nge,bottomcover,fla
ngea
ndma
nholeareselected.Atthesametime,accordi
ngtothefourways,i
ncludi
ngtorsio
naldeformatio
n,thecriticalspeed,stre
ngthcalculatio
n,a
ndtheradialdisplaceme
ntallowedattheshaftseal,Icalculatetheshaftdiametera
ndcheckthestre
ngth.Withrefere
ncetothe
natio
nalsta
ndardrules,theope
ni
ngofthe
nozzlewasrei
nforcedbythemethodofequalarearei
nforceme
nt.I
nthee
nd,Ididasimplei
ntroductio
naboutthema
nufacture,i
nspectio
na
ndi
nstallatio
nofthemixi
ngequipme
nt. Desig
nresult:Ihavedesig
nedaferme
ntatio
nta
nkwithaworki
ngvolumeof10.Thecyli
nderbodymaterialisS30408.Thei
n
nerwallthick
nessis14mm.Thei
n
nerdiameteris1800mma
ndtheheightofthecyli
nderbodyis3900mm.Theequipme
ntismecha
nicallysealeda
ndstirredi
ntheformofathree-layermixi
ngpaddle.Therackisequippedwithamecha
nicalseala
ndasi
nglepoi
ntbracket,a
ndthesupportissupportedbyasupportbracketa
ndthestirshaftdiameteris130mm. Keywords:Ferme
ntatio
nta
nk;impeller;Agitatorshaft; 目录 中文摘要Ⅰ 英文摘要Ⅱ 1前言1 1.1设计任务1 1.2发展趋势1 1.3结构和材料选择1 2工艺计算2 2.1确定筒体内径2 2.2确定上下封头几何参数2 2.3重新确定筒体高度2 2.4轴封损耗功率计算3 2.5单个搅拌桨功率计算3 2.6三层搅拌桨功率计算4 2.7接管计算5 2.8搅拌罐工艺参数5 3结构强度计算6 3.1受内压的筒体壁厚计算6 3.2受外压的筒体壁厚计算6 3.3封头内压计算10 3.4封头外压计算11 3.5带夹套筒体的壁厚计算12 3.6带夹套封头的壁厚计算12 3.7支座选择13 3.8法兰的选择16 3.9安装底盖的选用17 3.10机架的选择18 3.10人孔选择19 3.11密封形式20 4搅拌轴设计21 4.1按扭转变形计算搅拌轴直径21 4.2根据临界转速校核搅拌轴轴径21 4.2.1搅拌轴有效质量计算21 4.2.2圆盘有效质量计算22 4.2.3单跨轴一阶临界转速的计算23 4.3按强度计算搅拌轴的轴径25 4.4应按轴封处允许径向位移验算轴径28 5搅拌桨计算29 5.1确定搅拌桨设计功率29 5.2每层搅拌桨的设计功率29 5.3搅拌桨桨叶材料的许用应力30 5.4圆盘涡轮式搅拌桨计算30 6接管开孔补强31 7制造、检验、安装、使用、维修38 7.1轴的加工要求38 7.2搅拌器加工要求38 7.3搅拌设备壳体的制造要求及检验38 7.4搅拌轴的试运转38 8结束语39 参考文献40 致谢41
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