14 cov teeb meem ib puag ncig thiab cov kev daws teeb meem hauv kev hloov kho cov granulation yas

1. Cov khoom siv tsis txaus extrusion

Nce nce Mesh loj lossis tus naj npawb ntawm cov ntxaij lim dej;

■ Tsim kom muaj qhov loj me exuder ceev lossis nce cov khoom noj ceev;

■ Tsim kom muaj kev txo cov ntsuas kub (tuag lub taub hau lossis lwm thaj chaw).

2. Sab nraud impurities

■ Saib seb cov cuab yeej cov cuab yeej tuag puas hauv cov theem sib xyaw thiab kev tawm haujlwm kom huv si thiab txawm tias muaj kev cuam tshuam ib qho twg tau nkag mus;

■ Tsawg dua cov nyiaj ntawm cov khoom tawg ntxiv lossis manually ua thawj zaug kuaj pom ntawm cov khoom tawg los tshem tawm cov impurities;

Nce nce Mesh loj thiab tus naj npawb ntawm cov ntxaij lim dej;

■ Cover rau txhua qhov chaw uas cov khib nyiab yuav poob rau hauv (nrog cov khoom npog lossis ntxaij tsev).

3. Sab hauv Imurities

■ Ntau dhau ntawm lub taub hau siab (suav nrog kev thaiv tuag, ntau dhau ntawm lub taub lim dej, thiab lwm yam) nce ntxiv, ua rau muaj kev siv zog ntau. Cov khoom siv carbonized yog nqa mus rau hauv extruder sawb, ua rau sawb breakage hauv qab traction.

■ Ua kom muaj zog tshaj ntawm Extruder Intensifies muaj zog pab txhawb nqa pa roj carbonancation, ua rau cov khoom siv roj carbon monoxideally, ua rau cov khoom siv sib tsoo, ua rau muaj kev sib tsoo hauv lub zog.

■ Muaj ntau heev cov ntsia hlau shearing nyob rau hauv qee thaj chaw muaj zog nyob rau hauv extruder sawb, ua rau muaj kev sib tw so hauv qab traction.

■ Lub tshuab ntev ntev ua rau ntsia hlau thiab chim hnav, nce qhov khoob, thiab nce ntxiv. Ntau cov khoom siv carbonized cov khoom ua kom cov khoom siv thoob plaws rau lub sijhawm phab ntsa, thiab cov khoom siv carratusized tau maj mam nqa mus rau hauv cov extruder sawb, ua rau txheej txaij tawg.

Lub tshuab nqus tsev lossis cov khoom ua si hauv qab (suav nrog cov gasketys)

■ 4. Cov Khoom Siv Tsis Zoo Yas

■ Tsis Tu ntawm Cov Khaub Ncaws Tuag (suav nrog cov khoom pov tseg tawm thiab cov khoom tsis zoo uas yuav tsum nqa mus rau cov khoom sib tw, ua rau tawg ua hauv qab traction.

■ Kev Hloov Kev Lim Hloov Ua Ntej Ua Rau Cov Kev Lim Rau Lim Rau Lim, Tiv Thaiv Cov Khoom Siv Flow thiab ua rau tawg.

■ Tsawg dua cov kub tsawg lossis tsis muaj zog ntsia hlau shear cov txiaj ntsig hauv cov tshuaj yas tsis muaj txiaj ntsig, ua rau cov lumps thiab breakage nyob rau hauv traction.

- melting -} Cov cuab yeej tsis muaj zog, ua ke nrog cov khoom tsis zoo, ua ke nrog cov khoom tsis zoo thiab tawg} kev hloov pauv cov khoom siv rawies

■ Cov sib txawv tseem ceeb hauv flowability ntawm cov sib xyaw ua ke ntawm tib qho kub tuaj yeem ua rau "theem sib cais" vim tias tsis tiav thiab tsis tiav kev siv tshuaj thiab tshuaj lom neeg). Theem sib cais feem ntau tsis tshwm sim hauv kev muab extrusion tab sis muaj ntau dua hauv kev txhaj tshuaj molding. Txawm li cas los xij, yog hais tias cov molecular phaus flow (MFR) txawv ntau, tawg yuav tshwm sim nyob rau hauv cov xwm txheej ntawm cov hau kev tsis muaj zog shear shear.

■ Hloov pauv sib xyaw ua ke tawm tsam viscosity: rau tib cov khoom siv, ib qho kev txo qis hauv MFR ua rau muaj hardness, rigidity, thiab tsis loj. Qhov no tuaj yeem qhia txog qhov hnyav dua hauv cov pob, ua rau muaj viscosity ntau ntxiv. Raws li kev ua qhov kev ua qhov kub thiab cov txheej txheem ua haujlwm, qhov no tuaj yeem ua rau tsis zoo. Hauv qhov xwm txheej no, nce qhov hloov kom sov lossis txo qis ntsia hlau ceev tuaj yeem daws qhov teeb meem.

6. Chav ntaiv lossis tsis muaj zog hauv cov khoom hle

■ Kev ua haujlwm ntau dhau lawm, ntau lub zos ntawm cov ntsia hlau tuaj yeem ua rau lub ntsej muag tsis sib xws thiab lwm yam ntxiv, tso pa roj. Yog lub tshuab nqus tsev tsis tshem tawm cov pa roj no hauv lub sijhawm, lawv tau daig hauv cov khoom sawb, ua rau kev tsoo sab hauv qab kev quab yuam.

■ Cov khoom siv noo noo; Yog tias ua cov dej noo tsis tau muab tshem tawm sai sai thiab nqus plua plav, cov roj av tau daig, ua rau tawg ua ke hauv qab traction.

■ Lub tshuab nqus tsev txom nyem (nrog rau cov kev txwv, xau, cov gaske ntau, thiab lwm yam) kom dhau los ua cov khoom sib tw, ua rau muaj kev tawg.

7. Cov ntaub ntawv siab siab, ntau dhau dej txias lossis yaug, tsis sib xws

Yog tias cov khoom siv dhau lawm, cov dej kub dhau lawm, lossis cov dej ntau dhau los ntawm cov pellet ntau heev, tab sis tom qab ywg dej, nws yuav dhau los ua qhov nyuaj tam sim ntawd. Nyob rau hauv lub mismatched traction quab yuam, qhov no tuaj yeem ua rau tawg. Qhov xwm txheej no feem ntau tshwm sim nrog cov ntaub ntawv xws li PBT, p p pc nrog fiber ntau, thiab abs nrog fiber ntau, uas muaj cov nqi nrawm dua crystallization nqi lossis siab heev. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv me me- kev sim ntsuas khoom. Hauv qhov no, nce cov dej ntws thiab txo cov dej ntws kom muaj qee yam kev softness hauv cov pelletizer strips tuaj yeem daws qhov teeb meem.

8. Tsis txaus lim mesh lossis naj npawb ntawm cov nplooj ntawv lim

Qhov kev tshwm sim no feem ntau tshwm sim thaum muaj lub siab tsis txaus ntawm pellet zeb taub hau, lossis thaum muaj sab nraud lossis sab hauv.

9. Pellet Chaining teeb meem

Cov pellets uas lo uas lo ua ke yog feem ntau hu ua ob npaug -} txuas lossis chained pellet. Qhov no tuaj yeem tshwm sim los ntawm kev siv dej ntau dhau los lossis tsawg dhau cov dej ntws tsawg.

Pellet charping yog hais txog qhov xwm txheej uas cov kab ntawm cov lus sib txuas tau txuas nrog txhua tus; Ntawd yog, qee kis, cov lus txuas txuas nrog ua ke los ntawm qhov kawg {{0} -}}} xaus rau ntawm zaj duab xis los yog ua kom pom tseeb. Thaum kev ua, ntau tus txheej txheem teeb meem yuav ua ib leeg lossis ua ke ua rau qhov tshwm sim no. Piv txwv li, cov dej kub ntau dhau yuav ua rau pellet clumping; Hauv qhov no, cov dej ntsuas dej yuav tsum tau qis dua los muab cov khoom txias txaus rau cov particle. Ib qho ntxiv, ntau dhau dej ntws nrawm kuj tseem tuaj yeem ua rau pellet clumping, raws li nws ua rau lub pelletizing chamber ceev, ua rau particle agglomeration. Tsis tas li ntawd, yog tias tuag orifice spacing yog qhov sib ze heev, tawm nthuav dav thaum lub sijhawm ua haujlwm yuav ua rau sib tsoo; Txoj kev daws teeb meem yog los hloov cov tuag uas twb muaj lawm nrog ib qho uas muaj ntau qhov chaw loj thiab tsawg dua orifices.

10. Tailing Teeb Meem

Tau hais txog lub ntsej muag ntawm cov pellets, zoo li cov duab ntawm tus neeg hockey. Nws zoo li cov paug lossis kua muag rau hauv qab ntawm kev txiav. Qhov no tshwm sim vim tias cov cuab yeej txiav tsis ua kom huv si ntawm qhov no. Feem ntau, kho pellets yog los ntawm cov pelletizer hlau yuav tsum yog-}}}} {{4 {}} zoo nkauj heev spheres.

Cov ntaub ntawv uas tsis tau ua kom cov khoom zoo me me kuj tseem tuaj yeem tsim cov khoom zoo vim kev ua si. Piv txwv tias txhua yam kev txwv tsis tau kuaj xyuas, Tailing feem ntau kuaj pom tias yog qhov teeb meem txiav. Rau cov kab pelletizing xaim, kev daws teeb meem yog los hloov cov chais thiab hauv qab cutters los muab cov khoom tshiab, ntse txiav cov npoo; los yog mus re-}} Txiav txim siab cov khoom sib tw ua raws li cov txiaj ntsig tau teev tseg hauv cov khw muag khoom phau ntawv. Rau underwater pelletizing kab, kev tuag thiab txiav ntug yuav tsum tau kuaj xyuas kom muaj tsis muaj khawb, ua cov khawb thiab zuaj feem ntau ua rau tw.

11. Cov teeb meem hmoov

Rau ntau cov ntaub ntawv crystalline, xws li General - lub hom phiaj polystyrene, hmoov zoo li muaj kev phom sij thiab tshwj xeeb. Nws dhau los ua ib qho teeb meem rau cov txheej txheem vim tias nws cov ulters ntom ntom ntawm cov khoom, degrades lossis hlawv nyob rau hauv Extruder Chim, thiab ua rau muaj teeb meem hauv cov txheej txheem CAPEYING. Lub hom phiaj tseem ceeb ntawm cov chaw tsim khoom lag luam yog los tsim cov pellets tsis sib xws, piv txwv li, pellets nrog lub sij hawm ntev thiab cov cheeb tsam, pub paug los ntawm kev sib kis los ntawm cov hmoov lossis txawv teb chaws.

Txhawm rau daws cov teeb meem no, hmoov tuaj yeem txo los ntawm kho cov cuab yeej thiab tswj qee cov txheej txheem tseem ceeb. Thaum nkag mus rau hauv cov cutter, qhov ntsuas kub ntawm cov kab hlau ntau ntau yam kom ntseeg tau tias cov hlau yog qhov ntau tshaj plaws thermal shearing, yog li zam kev tawg.

Txog rau cov polymers tshwj xeeb, xaiv cov menyuam txiav nrog cov pelletizing lub kaum sab xis ua lub luag haujlwm tseem ceeb hauv kev txo cov khoom siv pov tseg. Rau unfilled polymers, stellite los yog cuab yeej steel txiav cov menyuam yuav tsum tau siv, thiab ob qho tib si cutter cov npoo yuav tsum tau ceev kom tsis txhob zuaj lub polymer. Rau cov cuab yeej tom ntej tom qab pelleting, seb puas muaj tshuab nqus lossis nqus -}}} Entrapment yuav tsum zam.

Rau underwater pelleting kab, xyuas kom meej cov cua txaus yog tswj hwm tus tuag thaum lub sijhawm ua thiab kho cov postet} Pellet nkag mus rau lub tshuab ziab khaub ncaws kub.

12. Hauv qab Cutter Cov Teeb Meem

Hauv qab cutter ntawm pelletizing cov khoom siv yog qhov tawv carbide steel ntawv nrog invar alloy welded rau nws hauv cov chaw tsim nyog, tso cai rau kev txhawb nqa mus rau kev txhawb nqa. Feem ntau, hauv qab cutter tawg tshwm sim tom qab txiav ntug ntug tig. Cov kev ntsuas tsim nyog tuaj yeem coj mus rau qhov teeb meem no, thiab cov qauv tsim khoom pom zoo yuav tsum ua tib zoo ua raws. Ib tus taw tes uas xav tau kev qhia tshwj xeeb ntawm no yog tias kev tshaj tawm xov hluav taws xob alloy manoy, muaj kev txwv shear thiab yog yooj yim puas los ntawm kev teeb tsa ntau dhau thaum lub teeb. Tsis tas li ntawd, thaum lub sijhawm sib hloov lossis kev teeb tsa, ib lub hauv qab tawg yog nquag mus rau lub pelletizement thiab tuaj yeem ua rau cov menyuam txiav cov menyuam thiab nce ntxiv.

13. Cov teeb meem xaim hluav taws xob

Hlau drift yog cov nyiam xaim los pawg rau ib sab ntawm cov khoom noj. Nws ua teeb meem xws li cov pellet tsis zoo, muaj ntev, nyias, nyias ib daim hlab, thiab ua tsis zoo. Yog hais tias lub pelletizer txiav dav hlau tsis yog mus rau Extruder Extrusion Extrusion tuag, cov hlau yuav zoo li cov neeg coob coob mus rau sab laug lossis sab xis, ua rau xaim hluav taws xob. Lwm cov ua rau xaim hluav taws xob suav nrog qhov tsis sib xws ntawm cov menyuam yaus thiab cov scraper, thiab tsis sib xws ntawm cov menyuam noj.

14. LAWD QHOV TSEEB

Ntev, nyias ib daim hlab yog ib hom khoom tsis xws luag tsim los ntawm pelletizer. Raws li lub npe qhia, lawv ntev ntev dua li qhov me me particle loj, nrog rau qhov ntev ntxiv sib txuas nyob rau hauv ob peb nti. Cov tsos ntawm nyias, elongated strips (tseem hu ua angled {2} luas} le npuag tswj ntawm cov peptive ntawm cov pepection thaum noj rau hauv cutter. Tshwj xeeb, cov xaim tsis yog nyob ntawm ib co co hniav sib dhos thaum pub rau hauv cov cutter, ua rau muaj qhov kawg thaum lub sijhawm txiav.

Qhov kev ncua deb ntawm cov menyuam pub mis (tom taw tes) thiab cov cutter (txiav) yog hu ua kev deb, thiab tsis muaj dab tsi siv los tswj cov xaim hauv no. Tsis zoo li tus neeg ntiaj teb ntoo, yog tias cov menyuam pub mis yog tsim nyog tau nruab lossis hauv cov hlau yas yuav tsis pub rau hauv cov khoom txiav ntawm lub kaum sab xis mus rau qhov chaw txiav. Qhov no ua rau cov xaim hluav taws xob hla, ntxiv mus tsis zoo rau qhov txiav kom zoo thiab thaum kawg ua teeb meem loj. Cov xaim hluav taws xob sib cais ua ob pluag mov sib cais, ua rau cov hlau kom plam lub zog thiab sag, deflecting cov hlau rau ob sab ntawm cov chais noj. Cov cim ceeb toom ntawm cov teeb meem no suav nrog cov neeg tsis muaj mob ntawm cov menyuam noj, tawg, lossis tshem tawm (laus}

Lwm cov teeb meem uas nquag muaj nyob hauv cov xaim xaim suav nrog: Cov xyoob ntoo hauv qab noj mov, uas ua rau poob ntawm traction; Cov txheej txheem tsis txaus ntseeg, uas tuaj yeem ua rau mob hnyav, nab - zoo li khoov ntawm cov hlau; Thiab hnav hlau xaim tuag daim hlau, uas tsim cov xov hlau ntawm kev sib txawv ntawm kev diameters. Tsis tas li ntawd, cov tuam ntxhab yuav tsum tau ceev faj txog cov txiv hmab txiv ntoo thiab kev tiv thaiv hauv qab ntawm kev ua haujlwm ntawm kev kub siab dhau heev, uas tuaj yeem ua rau cov hlau wobble.

Nyob rau hauv underwater pelletizing cov tshuab, thawj qhov ua rau ntawm elongated ib daim hlab yog ib qho tsis sib xws ntawm tus nqi pub thiab ua kom ceev. Hauv qhov no, cutter ceev yuav tsum tau nce ntxiv kom phim rau tus nqi pub noj, lossis tus nqi pub noj kom phim rau kev sib tw. Tsis tas li ntawd, thaum ua cov khoom siv, nws yog qhov tseem ceeb los xyuas kom meej tias cov taub hau cutter muaj cov hniav uas muaj tseeb los lav qhov tseeb thiab txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau cov neeg tuag.