Nyob rau hauv cov txheej txheem ntawm kev lag luam ua ntawv hloov mus rau qhov ceev thiab kev ua kom zoo, qhov chaw ziab, ua qhov txuas tseem ceeb txiav txim siab qhov zoo ntawm daim ntawv thiab kev ua haujlwm zoo, yeej tsis tau tso tseg kev rov ua dua nws cov cuab yeej siv tshuab. Txawm hais tias cov tshuab ziab khaub ncaws ib txwm muaj peev xwm ua tau raws li qhov xav tau ziab yooj yim, lawv feem ntau muaj teeb meem xws li ntug ntawv web fluttering, wrinkling, thiab tawg hauv cov xwm txheej tsim khoom ceev ceev, ua rau nws nyuaj rau hloov kho rau cov kev xav tau tsim khoom ntawm cov khoom siv tsawg thiab cov khoom siv siab. Raws li keeb kwm yav dhau los no, VAC dryer rolls (tseem hu ua Vac rolls, piv txwv li, lub tshuab ziab khaub ncaws nqus tsev) tau tshwm sim. Nrog lawv cov kev nqus tsev nqus tsev thiab cov haujlwm pabcuam ziab, lawv tau dhau los ua cov khoom siv txhawb nqa tseem ceeb hauv qhov chaw ziab ntawm cov tshuab ntawv ceev ceev, muab kev txhawb nqa tseem ceeb rau kev txhim kho qhov zoo thiab kev ua haujlwm zoo hauv kev lag luam ua ntawv.

Cov ntawv yob VAC tsis yog cov khoom siv cua sov thiab ziab ib txwm muaj, tab sis cov khoom siv ua kom cov ntawv ceev ceev thiab cov khoom siv ziab uas ua haujlwm sib koom tes nrog cov thoob khib nyiab ziab. Lawv feem ntau yog siv rau hauv cov qauv ziab ib txoj hlua ntawm cov tshuab ntawv ceev ceev, thiab feem ntau pom muaj nyob rau hauv cov kab ntau lawm rau cov ntawv kab lis kev cai, ntawv coated, ntawv dawb, thiab ntawv corrugating qis. Txawv ntawm hom kev ua haujlwm ntawm cov thoob khib nyiab ziab ib txwm muaj uas vam khom cov khoom siv cua sov sab hauv los muab cua sov ziab, VAC lub tshuab ziab yob ua tiav cov ntawv web stabilization los ntawm kev nqus siab tsis zoo, thiab tib lub sijhawm pab ua kom cov huab cua noo sai dua, txhim kho qhov ua tau zoo ntawm kev ziab tag nrho, tsim kom muaj kev sib koom tes ziab ntawm "cua sov + ntawv web stabilization".

Hais txog kev tsim qauv, VAC dryer rolls feem ntau muab faib ua ob hom kom haum rau ntau yam kev ceev ntawm lub tsheb thiab kev xav tau ntau lawm. Ntawm lawv, Vac roll uas muaj grooved tsis xav tau lub thawv nqus tsev uas ua tiav lawm. Qhov chaw ntawm lub yob muaj cov grooves dav 5 hli thiab tob 4 hli, thiab cov qhov me me tau muab faib rau hauv qab ntawm cov grooves, nrog rau cov qhov ntom ntom ntawm ntug kom yooj yim rau kev sib txuas. Nws tuaj yeem tsim qhov nqus tsev txog li 2kPa thaum phim nrog lub thawv cua tshuab, thiab qhov qhib ceev yog tswj ntawm 0.1% ~ 0.4%, ua kom cov ntawv web sib txuas los ntawm kev siv cua ntws tsis zoo. Nws cov qauv yooj yim heev, haum rau kev tsim cov tshuab ntawv nruab nrab thiab siab ceev. Lwm hom yog lub thawv nqus tsev hom Vac roll uas ua tiav lawm, uas muaj cov qhov ua tiav lossis cov qhov ntom ntom ntawm lub plhaub yob, thiab lub chamber nqus tsev uas hloov kho tau raws li qhov dav sab hauv, txuas ncaj qha rau lub twj tso kua mis nqus tsev. Nws muaj qib nqus tsev siab dua thiab kev tswj hwm meej dua, tsim tshwj xeeb rau cov tshuab ntawv ceev ceev nrog qhov ceev tshaj 1000m / min, uas tuaj yeem daws tau qhov teeb meem ntawm daim ntawv ruaj khov hauv qab qhov xwm txheej ua haujlwm hnyav. Hauv qee cov kab ntau lawm siab, Vac yob thiab lub tshuab ziab khaub ncaws tsim cov piv txwv meej. Piv txwv li, lub tshuab luam ntawv qib siab nrog cov zis txhua xyoo ntawm 130,000 tons muaj qhov chaw ziab uas muaj 29 lub tshuab ziab khaub ncaws thiab ntau Vac yob nrog txoj kab uas hla ntawm 1500 hli. Kab qis ntawm cov tshuab ziab khaub ncaws ib txwm hloov pauv tag nrho los ntawm Vac yob, ua tiav kev tsim khoom txuas ntxiv mus yam tsis muaj xov hlua thiab txhim kho kev ua haujlwm ruaj khov.

Lub ntsiab lus tseem ceeb ntawm VAC dryer rolls yog los ntawm lawv txoj kev ua haujlwm thiab kev ua tau zoo hauv qab kev ua haujlwm ceev ceev. Hauv kev tsim khoom tiag tiag, kab sab saud ntawm lub tog raj kheej lub tshuab ziab pa yog lub luag haujlwm rau kev muab cua sov kom ua kom cov dej noo hauv daim ntawv web, thaum kab sab hauv qab ntawm VAC dryer rolls nqus cov ntawv web ntawm qhov chaw qhuav los ntawm kev siab tsis zoo, ua kom zoo rau lub zog centrifugal tsim los ntawm kev ua haujlwm ceev ceev, thiab daws cov teeb meem kev lag luam xws li ntug ntawv web fluttering, wrinkling, thiab tawg. Tib lub sijhawm, cov cua ntws hauv lub qhov cua nkag mus rau hauv lub qhov dov, ua kom cov cua noo tawm sai dua, rhuav tshem cov txheej cua noo ntawm qhov chaw ntawv web, thiab txhim kho qhov ziab sai dua. Hauv theem xov, kev tsim cov qhov ntom ntom ntawm ntug tuaj yeem txhim kho qhov cuam tshuam ntawm kev nqus, txhim kho qhov ua tiav ntawm kev xov, thiab luv lub sijhawm xov. Cov ntaub ntawv hloov pauv ntawm Lee & Man Paper's PM15 daim ntawv tshuab lees paub qhov no tag nrho. Tom qab hloov cov thooj voos kheej kheej ob chav uas dai ua ke mus rau hauv cov thooj voos kheej kheej uas dai ua ke thiab hloov kho lawv mus rau Vac yob, ua ke nrog cov thawv ruaj khov zoo tshaj plaws thiab cov khoom siv cua nkag, qhov nrawm ntawm daim ntawv web tawg tau txo qis 60%, lub sijhawm tsis tau npaj tseg tau txo qis 30%, thiab thaum tsim cov ntawv corrugating base 70 ~ 90g / m² ntawm qhov ceev ntawm 1000m / min, qhov nruab nrab ntawm daim ntawv tawg txhua hli tsuas yog 10 zaug, thiab kev ua haujlwm ntau lawm tau nce ntxiv 3%.

Piv nrog rau cov thooj voos kheej kheej uas siv lub tshuab ziab khaub ncaws ib txwm muaj, qhov chaw ua haujlwm ntawm VAC dryer rolls feem ntau yog rau kev ruaj khov ntawm daim ntawv thiab kev pabcuam ziab, thiab ob qho no tsim kev sib raug zoo thiab sib koom tes. Hais txog kev muab cua sov, VAC dryer rolls tsis muaj cov qauv cua sov uas ua rau hauv thiab vam khom tag nrho rau kev ua haujlwm, thaum cov thooj voos kheej kheej siv cov pa ua qhov chaw cua sov thiab ua cov haujlwm hloov pauv cua sov thiab ziab; hais txog cov qauv nto, VAC dryer rolls txais yuav cov qauv grooved lossis drilled, thaum cov thooj voos kheej kheej feem ntau muaj cov nplaim chrome-plated lossis cam khwb cia hlau; hais txog kev ua haujlwm, VAC dryer rolls tsom mus rau kev ruaj khov ntawm daim ntawv, kev pabcuam dehumidification, thiab txo cov ntawv tsis zoo, thaum cov thooj voos kheej kheej siv lub tshuab ziab khaub ncaws tsom mus rau kev hloov pauv cua sov kom ua tiav qhov tseem ceeb ntawm cov dej noo hauv daim ntawv web. Hais txog lub peev xwm ziab, lub peev xwm ziab ntawm ib lub VAC dryer yob yog txwv, thiab kwv yees li 2 ~ 3 Vac yob yog sib npaug rau ib lub thooj voos kheej kheej. Yog li ntawd, hauv kev siv ua haujlwm, nws yog qhov tsim nyog los sib phim cov lej ntawm Vac yob thiab lub tshuab ziab khaub ncaws raws li qhov ceev ntawm lub tsheb thiab cov ntawv kom ua tiav qhov sib npaug ntawm kev ua haujlwm zoo thiab tus nqi.

Nyob rau hauv keeb kwm yav dhau los ntawm kev nce qib ntawm "ob lub carbon" txoj kev npaj thiab kev hloov pauv ntse thiab txuag hluav taws xob ntawm kev lag luam ntawv, daim ntawv thov ntawm VAC dryer rolls kuj yuav tsum xav txog kev tswj hwm kev siv hluav taws xob thiab kev kho kom zoo dua. VAC dryer rolls xav tau kev txhawb nqa lub tshuab nqus tsev thiab cua tshuab, thiab piv rau cov qauv ziab ib txwm muaj, lawv cov nqi siv hluav taws xob thiab kev saib xyuas yog siab dua me ntsis, tab sis kev txuag hluav taws xob thiab kev txo qis kev siv tuaj yeem ua tiav los ntawm kev ua kom zoo dua qub. Piv txwv li, Lee & Man Paper tau hloov kho lub thawv nqus tsev SymRun thaum lub sijhawm hloov pauv, txo qhov hnyav ntawm lub kiv cua cua los ntawm 30% thaum txhim kho qib nqus tsev; Valmet Finland tau ua kom zoo dua qhov sib nrug ntawm Vac rolls thiab lub tog raj kheej ziab los ntawm 3D scanning thiab qauv, nce lub kaum sab xis ntawm lub tshuab ziab ntawv web, txo cov naj npawb ntawm lub tshuab cua thiab cov kav dej cua, thiab txo qis kev siv hluav taws xob thiab kev saib xyuas. Hauv kev saib xyuas txhua hnub, nws yog qhov tsim nyog los rov qab cov qhov thiab grooves ntawm Vac yob nrog cua compressed kom tiv thaiv kev txhaws, xyuas qhov kev ua haujlwm sealing nqus tsev thiab qhov kub ntawm lub cev tib lub sijhawm, thiab tswj qhov degree nqus tsev hauv cov txheej txheem xav tau. Kev sib phim nrog cov cua nkag thiab cov tshuab cua sov zoo tuaj yeem txhim kho qhov ua kom qhuav zoo dua thiab txo qhov siv pa dej.

Nrog kev txhim kho tas mus li ntawm cov thev naus laus zis tshuab ntawv ceev ceev thiab qhov kev thov nce ntxiv rau cov khoom ntawv siab kawg, kev siv tshuab ntawm VAC dryer rolls kuj tseem yuav txav mus rau qhov tseeb, kev txuag hluav taws xob, thiab kev txawj ntse. Yav tom ntej, nrog kev pab los ntawm cov thev naus laus zis tshiab xws li CFD simulation thiab kev suav lej, qhov tsim qhov thiab lub tshuab nqus tsev ntawm Vac rolls tuaj yeem ua kom zoo dua los txhim kho qhov kev tswj hwm siab tsis zoo thiab qib ntawv web bonding; ua ke nrog kev txawj ntse thiab kev tshuaj xyuas cov ntaub ntawv loj, kev tswj hwm dynamic ntawm qib nqus tsev tuaj yeem paub txog kev hloov kho rau cov kev xav tau ntau yam ntawv thiab ntau yam tsheb ceev; tib lub sijhawm, los ntawm kev txhim kho cov khoom siv thiab kev ua kom zoo dua qub, kev siv zog ntawm cov khoom siv thiab kev hnav tuaj yeem txo qis, thiab lub neej ua haujlwm tuaj yeem ntev dua. Raws li "lub cuab yeej ruaj khov zoo" rau cov tshuab ua ntawv ceev ceev, VAC dryer rolls tsis tsuas yog daws ntau qhov mob ntawm cov qauv ziab ib txwm muaj nyob rau hauv cov xwm txheej ua haujlwm ceev ceev, tab sis kuj pab cov tuam txhab ua ntawv txhim kho cov khoom zoo thiab ua kom zoo dua qub, txhaj tshuaj tshiab rau hauv kev txhim kho zoo ntawm kev lag luam ua ntawv.