Twin Screw Extrusion Pelleting Black Spot Challenge: Los ntawm kev daws teeb meem rau cov kev daws teeb meem rau kev tsim khoom tshwj xeeb
Xav txog tias koj nyuam qhuav nqis peev rau hauv ib qho kev ua haujlwm siab niaj hnub no -txoj kev ua tau zoo extrusion kab los tsim cov khoom loj ntawm siab-cov pellets zoo dua qub, tab sis pom cov pob dub ntxhov siab hauv thawj pawg ntawm cov khoom.
1. Cov xwm txheej tam sim no ntawm kev lag luam
Kev lag luam plastics recycling thiab pelletizing kev lag luam tab tom ntsib kev hloov pauv tsis tau muaj dua. Nrog kev nruj nruj thoob ntiaj teb cov kev cai ib puag ncig, cov tuam ntxhab tau tsom mus rau kev siv hluav taws xob ntau ntxiv thiab kev ruaj khov ntawm kev tsim khoom.
Nrog 32.4% cov nyiaj tau los sib koom hauv kev lag luam extrusion hauv Asia Pacific, Tuam Tshoj txoj kev coj noj coj ua tsis yog tsuas yog tau txais txiaj ntsig los ntawm lub hauv paus tsim muaj zog, tab sis kuj qhia txog qhov xav tau ceev rau cov khoom siv yas pelletizing zoo.
High-kev ua tau zoo thiab kev sib koom ua ke- tig ntxaib ntsia hlau extruders tau dhau los ua qhov kev xaiv tseem ceeb hauv kev lag luam, qhia txog qhov zoo ntawm kev tuav cov khoom siv dua tshiab thiab cov qauv tsim tshwj xeeb.
2. Kev tshuaj xyuas qhov tshwm sim ntawm cov dot dub
Qhov teeb meem ntawm cov pob dub nyob rau hauv cov yas pelleting tsis yog tsuas yog kev kho kom zoo nkauj xwb, tab sis ib qho kev xav ntawm qhov tsis sib xws ntawm ntau yam hauv cov txheej txheem tsim khoom.
Qhov tseeb, cov pob dub no yuav yog cov khoom siv, impurities lossis cov khoom degradation, xws li qhov loj me los ntawm cov me me mus rau qhov loj ntawm cov kab mob, uas cuam tshuam rau kev ua tau zoo thiab qhov zoo ntawm cov khoom kawg.
Rau cov tuam txhab nrhiav kev ua haujlwm zoo, txawm tias cov pob dub tawg tuaj yeem ua rau kev puas tsuaj ntawm tag nrho cov khoom lag luam, uas ua rau poob nyiaj txiag loj. Qhov tseem ceeb tshaj, cov xim dub yuav dhau los ua qhov pib ntawm qhov tsis ua haujlwm thaum ntxov ntawm cov khoom, txo cov kev pab cuam lub neej ntawm cov khoom kawg.
3. Kev tshawb nrhiav hauv paus
Txhawm rau tshem tawm qhov teeb meem ntawm qhov chaw dub, lub hauv paus ua rau yuav tsum tau txheeb xyuas qhov systematically. Cov laj thawj ntawm kev tsim cov pob dub thaum lub sij hawm extrusion thiab granulation ntawm plastics yog complex thiab varied, tab sis tuaj yeem muab sau ua cov ntsiab lus hauv qab no:
Cov khoom siv raw thiab cov qauv tsim: cov khoom tsis zoo ntawm cov khoom siv raw thiab ntau qhov chaw dub heev. Qee cov khoom siv ntxiv xws li nplaim taws tuaj yeem decompose thiab char ntawm cov txheej txheem kub. Mismatch nyob rau hauv thermal stability ntawm cov khoom sib txawv nyob rau hauv formulation kuj yog ib qho ua rau.
Unbalance ntawm cov txheej txheem tsis: lub zos overheating los yog muaj zog shearing ntawm cov ntsia hlau, ua rau muaj zog carbonization ntawm cov ntaub ntawv. Lub taub hau loj heev thiab reflux ntau dhau yuav ua rau cov khoom siv carbonization.
Cov teeb meem ntawm cov khoom siv: lub neej kev pab cuam ntawm lub tshuab yog ntev, qhov clearance ntawm cov ntsia hlau thiab lub tshuab chim yog nce, thiab cov nyiaj ntawm cov pa roj carbon ntawm lub cav chim phab ntsa yog nce. Qhov chaw nres nkoj tso tawm tsis tau ntxuav rau lub sijhawm ntev, thiab cov pa roj carbonization ntau ntxiv.
Kev ua haujlwm thiab ib puag ncig yam: lwm yam impurities yog sib xyaw los ntawm ib puag ncig sab nraud lossis tib neeg yam. Lub qhov ncauj pwm tsis huv; Lub qhov hluav taws xob tsis du txaus, thiab cov ntaub ntawv khaws cia rau lub sijhawm ntev yog maj mam carbonized.
Paub txog cov laj thawj no, peb tuaj yeem tsim cov kev daws teeb meem ntau dua los txo cov pob dub ntawm cov hauv paus hniav.
4. Kev daws teeb meem
Optimize txheej txheem tswj
Optimized txheej txheem tswj yog lub hauv paus rau kev txo cov pob dub. Qhov ntsuas kub tsim nyog tuaj yeem tiv thaiv cov khoom siv hluav taws xob hauv zos. Nws raug nquahu kom siv qhov ntsuas kub ntawm qhov ntsuas kom ntseeg tau tias cov khoom sib txawv ntawm cov khoom hauv lub thoob.
Rau cov khoom siv yas sib txawv, cov ntsia hlau sib txuas ceev thiab kev pub noj ceev piv yuav tsum raug kho. Cov txiaj ntsig tau pom tias kev sib xyaw ua ke ntawm cov ntsia hlau tsim nyog tuaj yeem txo cov cua sov thiab cov khoom degradation.
Kev ua haujlwm zoo ntawm lub tshuab nqus tsev pa tawm kuj tseem ceeb heev. Nws tuaj yeem tso tawm cov khoom tsis haum rau lub sijhawm thiab cov khoom me me molecular degradation nyob rau hauv cov ntaub ntawv los tiv thaiv lawv los ntawm accumulating thiab carbonizing nyob rau hauv lub system.
Txhim kho cov cuab yeej tu
Kev tu cov cuab yeej yog tus yuam sij rau kev tiv thaiv cov pob dub. Kev tu tsis tu ncua yog qhov tseem ceeb tab sis tseem ceeb, suav nrog:
· Tsis tu ncua ntxuav lub tshuab nqus tsev qhov chaw nres nkoj thiab qhov chaw tso pa tawm
· Ua kom huv lub taub hau, qhov ncauj tuag thiab tshuaj ntsuam
· Khaws tag nrho cov khoom kom huv si
Tsis tu ncua kev tshuaj xyuas thiab kho cov ntsia hlau thiab lub tog raj kheej yuav tsum tsis txhob ignored. Thaum qhov kev tshem tawm ntawm cov ntsia hlau thiab lub tog raj kheej nce, nws yuav tsum tau kho lossis hloov lub sijhawm, vim tias kev tshem tawm ntau dhau yuav ua rau cov khoom khaws cia thiab degradation.
Hnav threaded ntsiab yuav tsum tau hloov nyob rau hauv lub sij hawm kom tsis txhob carbonization ntawm cov ntaub ntawv vim ntev - lub sij hawm tuav nyob rau hauv lub kaum sab xis tuag. Tsis tu ncua xyuas thiab hloov kho qhov system pom, uas tuaj yeem cuam tshuam cov impurities sab nraud rau hauv cov khoom kawg.
Raw Material thiab Formula Management
Cov khoom siv raw thiab daim ntawv qhia kev tswj hwm yog lub hauv paus ntawm kev tswj hwm dub. nruj me ntsis xaiv cov khoom siv raw khoom, tsim kom muaj kev tshuaj xyuas cov khoom tuaj, thiab qhia cov pob dub los ntawm qhov chaw. Rau cov khoom siv rov ua dua tshiab, kev kho ua ntej thiab kev pom zoo raug pom zoo.
Optimized formulation kuj tseem ceeb heev. Xaiv additive nrog zoo thermal stability; Lub lubrication system yuav tsum tau kho kom txo cov khoom slipping thiab overheating hauv zos los ntawm ntau tshaj -lubrication.
Thaum ua cov ntaub ntawv kub hnyiab, kom zoo ntxiv cov tshuaj tiv thaiv -oxidant thiab stabilizer los txhim kho cov cua sov ntawm cov ntaub ntawv thiab txo cov degradation.
5. KEV PAB CUAM TSHUAJ TIV THAIV
Cov txheej txheem ntau lawm optimization
Tsim kom muaj txheej txheem pib thiab kaw cov txheej txheem yog ib txoj hauv kev zoo los tiv thaiv cov pob dub. Cov txheej txheem kub nce siab tuaj yeem zam dhau shearing ntawm cov ntaub ntawv ua ntej ncav cuag qhov kub thiab txias; Ntxuav lub kaw lus kom huv si nrog cov ntaub ntawv tu kom tsim nyog kom tsis txhob muaj kev sib kis ntawm cov khoom sib txawv.
Kev saib xyuas thaum tsim khoom kuj tseem ceeb heev. Kev soj ntsuam tsis tu ncua ntawm cov khoom zoo li qub; Tsim kom muaj cov ntaub ntawv pov thawj ntau lawm rau kev taug qab thiab tshuaj xyuas qhov ua rau ntawm cov pob dub; Muab kev cob qhia zoo rau cov neeg ua haujlwm txhawm rau txhim kho lawv txoj kev paub thiab kev teb rau cov teeb meem dub.
Cov cuab yeej kho dua tshiab thiab kev tsim kho tshiab
Rau cov kab ntau lawm uas tau ntev tau plagued los ntawm cov pob dub, cov khoom siv kho dua tshiab tuaj yeem yog qhov kev daws teeb meem tseem ceeb. Niaj hnub no hauv - kabntxaib ntsia hlau extrudersyog qhov zoo tsim los muab ntau qhov sib txawv shear thiab kub faib, txo qis hauv zos overheating.
High-efficiency extruder txais kev tswj qhov kub thiab txias ntau dua thiab cov txheej txheem tsim khoom ntau dua, uas tuaj yeem tswj tau qhov kev ua haujlwm zoo dua thiab txo qhov kev pheej hmoo ntawm cov khoom degradation. Ua ke nrog lub zog extrusion zoo ntawm tapered ntxaib ntsia hlau thiab cov khoom zoo heev plasticizing ntawm cov ntsia hlau sib npaug sib npaug, tapered ntxaib ntsia hlau extruder paub txog qhov zoo ntawm extrusion quab yuam loj, zoo plasticizing khoom, siab tso zis thiab tsawg zog noj.
Qee cov thev naus laus zis tshiab kuj tsim nyog tau txais kev saib xyuas, xws li kev pom hauv online uas tsis tu ncua tshem tawm impurities los ntawm yaj; Lub twj tso kua mis yaj tuaj yeem txhim kho lub taub hau siab thiab txo qhov degradation los ntawm kev hloov pauv siab; Cov kev soj ntsuam siab heev saib xyuas qhov tseem ceeb ntawm lub sijhawm thiab ceeb toom cov teeb meem tshwm sim hauv lub sijhawm.
Kev kho dua tshiab thev naus laus zis tuaj yeem ua rau muaj txiaj ntsig zoo. Kev tshawb fawb qhia tau hais tias lub peev xwm tuaj yeem nce ntau dua 20% nrog cov cuab yeej niaj hnub extruder, thiab cov khoom lag luam kuj tuaj yeem txhim kho tau zoo.
Rov qab mus rau lo lus nug tseem ceeb: thaum cov pob dub tshwm nyob rau saum npoo ntawm cov khoom yas uas ua los ntawm cov extruders ua haujlwm siab, tus kws tshaj lij kev paub txog thawj zaug kuaj xyuas lub tshuab nqus tsev. Nws pom tias lub qhov cua qhov screen tau ib nrab txhaws nrog chars.
Thaum tu, nws kho qhov layout ntawm shear ntsiab ntawm lubco- tig ntxaib ntsia hlau extruderkom txo qis hauv zos shear zog thiab optimize qhov kub thiab txias profile. Ob peb teev tom qab ntawd, qhov chaw dub ploj mus, kev tsim khoom rov pib dua thiab cov khoom seem poob qis ib qho kev txiav txim loj.
