Hauv kev lag luam yas rov ua dua tshiab, cov yas rov ua dua tshiab thiab ntxuav kab, raws li cov tub ntxhais txuas txuas rau pem hauv ntej -kawg pretreatment thiab rov qab -kawg granulation, bears lub luag hauj lwm hnyav ntawm kev sib sib zog nqus tu thiab homogenization ntawm crushed yas scraps. Los ntawm kev sib koom ua ke ntawm cov txheej txheem xws li kev sib tsoo, kev sib txhuam, kev sib txhuam thiab kev tshem tawm impurity, thiab lub cev qhuav dej thiab ziab, nws hloov cov khoom siv yas pov tseg uas muaj roj, cov ntawv lo, av nkos, thiab lwm yam impurities rau hauv cov ntaub ntawv raw nrog qib huv si raws li cov kev cai rau re-granulation lossis reprocessing. Qhov no yog qhov tseem ceeb lav rau kev ua tiav siab - cov nqi rov ua dua ntawm cov yas.
Cov txheej txheem ntws ntawm cov yas rov ua dua tshiab thiab ntxuav kab feem ntau pib nrog crushing thiab refining. Cov khoom siv yas (particle loj feem ntau ntawm 10–50 mm) los ntawm pem hauv ntej- kawg shredding los yog crushing cov khoom ua ntej nkag mus rau lwm yam crusher los yog sib tsoo zeb kom txo cov particle loj mus rau 2-10 mm, ua rau ib tug tshwj xeeb deg cheeb tsam thiab txhim kho qhov kev sib cuag thiab tshem tawm efficiency ntawm cov khoom paug los ntawm cov yas nto tom qab ntxuav. Nyob rau theem no, hom hniav thiab lub vijtsam aperture yuav tsum raug xaiv raws li cov khoom siv kom tsis txhob muaj plua plav lossis lub zog siv vim dhau - tsoo.
Cov kauj ruam tom ntej yog qhov kev sib txhuam tu theem, qhov chaw ua haujlwm tseem ceeb ntawm cov kab ntxhua khaub ncaws. Cov khoom siv crushed yog xa mus rau lub siab -ceev rotating kev sib txhuam nqus tsev vacuum los yog ib tug kauv-propelled ntxuav tank. Raws li kev sib xyaw ua ke ntawm kev ua kom muaj kev ntxhov siab thiab dej ntws, kev sib txhuam hnyav tshwm sim ntawm cov khoom yas thiab nruab nrab ntawm cov khoom thiab cov phab ntsa tank, ua rau number case, adhesives, grease, thiab nplua xuab zeb adhering rau saum npoo kom detach. Txhawm rau txhim kho cov nyhuv tu, qhov tsim nyog tus neeg saib xyuas ib puag ncig tuaj yeem raug ntxiv, thiab kev tswj xyuas meej ntawm cov dej kub thiab pH txhawb cov emulsification thiab dispersion ntawm stains. Lub tshuab nqus tsev ntxhua khaub ncaws yog nruab nrog lub ntsuas ntsuas uas tuaj yeem cais cov teeb pom kev tsis huv (xws li cov tawv nqaij thiab cov xuab zeb zoo) los ntawm cov khoom hnyav hnyav (xws li hlau thiab iav shards) hauv lub sijhawm, txo cov pa phem thib ob.
Cov txheej txheem sorting thiab impurity tshem tawm raws li tam sim ntawd, aiming mus ntxiv txhim kho lub purity ntawm cov khoom. Cov khoom crushed, tom qab kev sib txhuam ntxuav, nkag mus rau hauv lub tank los yog eddy tam sim no cais. Utilizing the differences in density and buoyancy between different materials, residual lightweight impurities (such as foam particles and paper scraps) are separated from the plastic granules. Rau cov ntaub ntawv uas muaj hlau ntxig, cov hlau nplaum sib nqus los yog cov khoom sib nqus tam sim no tuaj yeem nkag mus rau adsorb lossis tshem tawm ferromagnetic thiab tsis yog -ferrous hlau impurities. Qee qhov siab - kawg crushing thiab ntxuav kab kuj tseem nruab nrog kho qhov muag sorting units, siv ze -infrared lossis pom lub teeb pom kev siv tshuab los txheeb cov khoom hauv online (PE, PP, PET, thiab lwm yam), tsim cov xwm txheej rau kev faib tawm thiab granulation tom ntej.
Lub cev qhuav dej thiab ziab yog theem kawg ntawm kev sib tsoo thiab ntxuav kab thiab ib qho tseem ceeb ua ntej kom ntseeg tau qhov zoo ntawm granulation. Cov khoom ntub dej tau siv lub tshuab nqus dej los yog lub tshuab centrifugal dewatering kom tshem tawm cov dej dawb feem ntau, thiab tom qab ntawd nkag mus rau hauv lub tshuab ziab khaub ncaws los yog lub tshuab ziab khaub ncaws kom txo cov dej noo kom qis dua 0.5%. Cov txheej txheem ziab kom qhuav yuav tsum tswj hwm qhov kub thiab txias kom tsis txhob muaj cua sov- cov yas rhiab heev (xws li PVC) los ntawm overheating thiab decomposing los tsim cov pa phem, thaum ua kom zoo ib yam ziab ntawm granule nto kom tsis txhob clumping uas yuav cuam tshuam rau tom ntej conveying thiab melting.
Kev tsim thiab kev ua haujlwm ntawm cov khoom siv yas rov ua dua tshiab yuav tsum xav txog cov khoom siv sib xws, kev siv hluav taws xob thiab kev siv dej kom zoo, thiab kev ua raws li ib puag ncig. Rau lub teeb yuag, buoyant cov ntaub ntawv zoo li cov yeeb yaj kiab, flattening thiab ua ntej - cov khoom siv ntxhua khaub ncaws tuaj yeem muab ntxiv kom txo tau cov khoom ntim hauv lub tank ntxhua. Rau cov khoom siv roj ntau heev, ntau-theem countercurrent ntxhua khaub ncaws thiab dej kub txau tuaj yeem siv los txhim kho kev ua kom tsis muaj paug thiab txo kev siv tshuaj tua kab mob. Cov kab ntxhua khaub ncaws niaj hnub no feem ntau suav nrog kaw- lub voj voog dej ntws, siv cov dej xau, cov khoom siv lim dej, thiab kev saib xyuas dej kom ua tiav cov dej siv rov qab thiab txo cov dej pov tseg. Exhaust gas sau thiab purification cov cuab yeej ua kom muaj kev kho mob zoo ntawm cov organic tebchaw uas tsim tawm thaum ntxuav thiab ziab.
Los ntawm kev xav txog tus nqi lag luam, kev siv cov khoom siv yas rov ua dua tshiab tau txhim kho kev huv thiab sib xws ntawm cov khoom siv rov ua dua tshiab, coj lawv cov ntsuas kev ua tau zoo ze rau cov ntaub ntawv nkauj xwb, yog li nthuav lawv qhov chaw thov nyob rau hauv siab - thaj chaw xav tau xws li ntim khoom noj, khoom siv kho mob, thiab cov khoom siv tsheb. Nyob rau tib lub sijhawm, los ntawm kev sib koom ua ke thiab kev tswj xyuas ntse, cov kab ntxhua khaub ncaws tuaj yeem ua tiav kev ua kom zoo ntawm kev tsim khoom thiab kev siv zog, txo cov nqi ua haujlwm thiab txhim kho kev lag luam kev sib tw ntawm cov khoom siv rov ua dua tshiab.
Nyob rau hauv cov ntsiab lus, cov yas rov ua dua thiab ntxuav kab, nrog nws cov txheej txheem tseem ceeb ntawm crushing thiab refining, kev sib txhuam ntxuav, sorting thiab impurity tshem tawm, thiab lub cev qhuav dej thiab ziab, yog ib qho tseem ceeb refining txuas nyob rau hauv cov yas recycling saw. Nws ua haujlwm tau zoo, huv si, thiab qis dua -kev ua haujlwm tsis yog tsuas yog ua kom cov khoom siv tau zoo dua qub, tab sis kuj tseem txhawb nqa kev lag luam yas rov ua dua tshiab rau siab - zoo thiab kev txhim kho kom ruaj khov, muab kev txhawb nqa zoo rau kev tswj hwm cov pa phem thoob ntiaj teb thiab kev txuag nyiaj.