Kelongweier soj ntsuam cov txheej txheem ntws ntawm PVC Granulation ntau lawm kab

PVC granulation ntau lawm kabkhoom siv yog tsim rau PVC-U, PVC-C, PVC granulation ntau lawm kab, txheej txheem ntws: ntsia hlau feeder-ob chav extruder-dej nplhaib kub txiav-lub cev qhuav dej-pelletizing.

Raws li qhov yuav tsum tau ua ntawm cov khoom yas yas, cov khoom sib xyaw ua ke sib xyaw yog pub rau hauv lub thoob ntawm extruder los ntawm lub hopper. Nrog rau kev sib hloov ntawm cov ntsia hlau, cov ntaub ntawv raw raug yuam kom lub tshuab taub hau los ntawm cov ntsia hlau auger, vim tias muaj cov ntxaij lim dej, cov phaj sib cais thiab cov pwm ua pwm nyob rau hauv pem hauv ntej ntawm lub thoob Tsis tas li ntawd, qhov ntim ntawm cov xov yog maj mam txo. Cov khoom nyoos thawb rau pem hauv ntej los ntawm cov ntsia hlau yog nyob rau hauv siab heev. Nyob rau tib lub sijhawm, cov khoom siv raw yog rhuab los ntawm lub thoob. Thaum cov khoom siv raw yog nyem, sheared, thiab nplawm, Kev sib txhuam ntawm cov ntsia hlau thiab kev sib txhuam ntawm cov khoom siv raw khoom yuav tsim kom muaj qee qhov cua sov. Yog li ntawd, qhov kub ntawm cov khoom siv raw hauv lub thoob tau nce siab dua, thiab nws lub cev lub cev maj mam hloov mus rau lub xeev elastic heev, thiab thaum kawg dhau los ua cov kua dej khov kom txog thaum nws yog cov yas tag. . Vim tias cov ntsia hlau txuas ntxiv, cov khoom siv yas yog extruded uniformly thiab uniformly los ntawm molding tuag los tsim ib yam khoom yas nrog ib tug tej yam zoo li. Tom qab txias thiab shaping, cov txheej txheem no ua tiav cov molding ntawm cov khoom yas. Nyob rau hauv tag nrho cov txheej txheem no, lub extruder ib feem plays lub luag hauj lwm tseem ceeb, thiab nws lub ntsiab technical point yog nyob rau hauv lub yas extruder ib feem.

1. Cov cua kub cua sov: Cov cua kub kub nyob ntawm qhov chaw mos los yog melting kub ntawm cov cab kuj. Qhov siab dua qhov taw tes softening lossis melting kub ntawm cov cab kuj, qhov kub ntawm cov cua sov ntau dua. Feem ntau, nws yuav tsum yog li 5 degree siab tshaj qhov kub ntawm cov resin melting. Yog tias qhov kub thiab txias qis dhau lawm, cov resin tsis tuaj yeem yaj tag nrho, thiab cov khoom siv tsuas yog tsis tuaj yeem npog tag nrho cov hmoov inorganic. Voids tshwm nyob rau hauv qhov ntxhib nto ntawm tus masterbatch, thiab cov resin thiab inorganic hmoov tsis tuaj yeem tsim ib qho kev sib txuam. Yog hais tias cov cua kub kub yog siab dhau lawm, cov additives yog ib qho yooj yim mus volatilize, thiab cov ntsia hlau shear quab yuam yog txo thiab nws tsis haum rau plasticization, uas kuj cuam tshuam rau qhov zoo ntawm cov masterbatch. Feem ntau, qhov kub hauv cheeb tsam ob yuav tsum yog qhov kub siab tshaj plaws rau granulation, thaj tsam ib yog li ntawm 10 degree qis dua cheeb tsam ob, thiab cheeb tsam peb thiab cheeb tsam plaub yog ib qho zoo ib yam li cheeb tsam ob, pib ntawm cheeb tsam tsib mus txog rau lub tshuab taub hau presses. 5 ~ 10 degree Qhov gradient maj mam txo.

2. Kev sib hloov ceev ntawm lub ntsiab cav: Rau ib tug ntxaib-ntsia hlau extruder ntawm ib tug tej yam specification, kev sib hloov ceev ntawm lub ntsiab cav yog txiav txim los ntawm cov zis. Qhov siab dua qhov kev sib hloov ceev ntawm lub cav tseem ceeb, qhov tso zis ntau dua. Kev xyaum tau ua pov thawj tias rau ib qho ntxaib-ntsia hlau extruder, qhov loj dua qhov tso zis, qhov zoo dua. Feem ntau, nws yog qhov zoo dua los tswj qhov siab tshaj plaws ntawm tus tswv tsev ntawm 60 ~ 70 feem pua. Yog tias qhov kev sib hloov ceev loj heev, cov khoom yuav nyob hauv cov ntsia hlau rau lub sijhawm luv, yog li cov yas yuav tsis zoo. Qhov ceev ntawm lub tshuab tseem ceeb kuj yuav tsum phim qhov ceev ntawm lub feeder thiab qhov ceev ntawm cov pelletizer, txwv tsis pub yuav muaj qhov tshwm sim txawv txav xws li pub mis los yog loj dhau los yog me me.

Qhov no tsis yog ib qho teeb meem yooj yim ntawm kev ceev ntawm lub cav loj lossis qhov ceev ntawm cov khoom noj. Macroscopically hais lus, qhov ceev ntawm lub tshuab tseem ceeb qhia txog kev ceev ntawm cov khoom siv los ntawm lub ntsiab tshuab ntsia hlau, thiab qhov ceev ntawm cov ntsia hlau pub mis qhia qhov ceev ntawm cov ntsia hlau pub rau lub ntsiab tshuab ntsia hlau. Yog li ntawm no yog cov lus nug ntawm seb qhov ceev ntawm cov ntsia hlau noj thiab cov ntsia hlau ceev ntawm lub ntsiab cav sib tw.

(1) Thaum cov ntsia hlau pub ceev me me dhau los ntawm lub ntsiab cav ntsia hlau ceev, cov khoom siv hauv lub cav loj ntsia hlau tsis ua tiav cov ntsia hlau sib txawv, lub ntsiab cav ntsia hlau, cov khoom siv me me, cov khoom siv me me, Tom qab ntawd cov khoom nthuav tawm qhov tsis tshua muaj siab hauv cov ntsia hlau Cov nyhuv shearing tsis tuaj yeem ua tiav cov txiaj ntsig zoo dispersion. (Nws tuaj yeem pom tau tias qhov tawg ntawm cov muab tub lim tsis yog tsuas yog cuam tshuam rau cov khoom me me, tab sis kuj muaj feem xyuam nrog cov khoom xws li cov txheej txheem tsim khoom thiab cov txheej txheem sib xyaw.)

(2) Thaum qhov ceev ntawm cov ntsia hlau pub mis loj dhau los ntawm cov ntsia hlau ceev ntawm lub cav tseem ceeb, cov khoom xa los ntawm cov ntsia hlau pub rau cov ntsia hlau qhov sib txawv ntawm lub cav tseem ceeb yog ib txwm lig dhau los ntawm kev xa tawm ntawm cov ntsia hlau. lub ntsiab cav, thiab tom qab ntawd txiav mus rau hauv pellets tom qab dej txias, yog li cov ntsia hlau sib txawv ntawm lub ntsiab cav yog oversaturated. Cov khoom siv uas lig dhau los yuav raug xa tawm yog nyem thiab compacted nyob rau hauv qhov kev txiav txim ntawm muaj zog squeezing thiab compaction. Nws yuav maj nroos mus nrhiav ib txoj kev tawg. Lub sijhawm no, nws yuav dhau los ntawm cov iav fiber ntau lub qhov ncauj lossis lub tshuab nqus tsev, ua rau lub qhov ncauj ntawm lub iav fiber ntau tawm los yog rov qab cov khoom siv, thiab txawm tias lub tshuab nqus tsev yog thaiv. Hauv qhov no, nws raug nquahu kom tswj hwm qhov ceev ntawm tus tswv tsev ntawm 60 ~ 70 feem pua ​​​​ntawm qhov siab tshaj plaws. Qhov no tiag tiag xav txog cov ntaub ntawv uas qhov ceev ntawm tus tswv tsev yog siab dhau, thiab cov ntaub ntawv uas qhov ceev ntawm tus tswv tsev yog tsawg dhau 2. Rau kev tsim khoom txawv txav, tau kawg, qee qhov teeb meem kuj tseem tuaj yeem cuam tshuam, xws li kev kub ceev heev. , siab load lag luam ntawm lub tshuab, uas yuav txo tau lub neej kev pab cuam ntawm lub tshuab.

(3) Kev siv lub twj tso kua mis dej thiab lub tshuab nqus tsev twj tso kua mis Lub twj tso kua mis yog cov cuab yeej siv los kho qhov kub ntawm cov ntsia hlau. Tshwj tsis yog tias qhov kub hauv ib cheeb tsam siab dhau lawm, feem ntau, cov dej valve yuav tsum raug kaw kom ntau li ntau tau kom txuag tau hluav taws xob. Ntev npaum li qhov ntsuas kub ntawm txhua qhov chaw yog qhov tsim nyog, lub twj tso kua dej tuaj yeem xav tau. Lub tshuab nqus tsev twj tso kua mis yog ib qho cuab yeej siv los tshem tawm cov khoom tsis tshua muaj hluav taws xob, feem ntau yog siv rau cov tshuaj tiv thaiv kab mob lossis cov hmoov txhuv nplej siab puv masterbatch ntau lawm. Rau kev tsim cov hmoov inorganic puv masterbatch, nws yog qhov zoo tshaj plaws tsis siv lossis siv tsawg dua. Nqus tau yooj yim tshem tawm cov additives nyob rau hauv cov khoom, uas cuam tshuam rau dispersion los yog ua cov masterbatch nyob rau hauv lub matrix resin.

Kelongweierpelletizing thiab extrusion ntau lawm kab adopts domestic thiab txawv teb chaws tuaj CNC xuas nrig ntaus tshuab, CNC dabtsi yog khoov tshuab, phaj txiav, thiab tig / milling tshuab kom paub meej qhov tseeb thiab zoo ntawm cov txheej txheem pelletizing Peb tuaj yeem xa cov khoom raws sijhawm, txuag sijhawm rau cov neeg siv khoom, muab rau hauv kev tsim khoom sai li sai tau, thiab tsim cov txiaj ntsig.