Kamoo Pelletizing Extruders e Sebetsang Kateng Mohato ka Mohato

Kamoo Pelletizing Extruders e Sebetsang Kateng Mohato ka Mohato

Ha u sebelisa a pelletizing extruder, o fetola thepa e tala hore e be li-pellets ka ho latela mehato e hlakileng. U kenya thepa ka har'a extruder. Mochine oa qhibiliha ebe oa o kopanya. Joale, e sutumelletsa lintho ka har'a thae ho etsa li-pellets. Mohato o mong le o mong ke oa bohlokoa bakeng sa ho etsa li-pellets tse matla esita le. Haeba u tseba hore na pelletizing e sebetsa joang, o ka etsa hore extruder ea hau e be betere le ho lokisa mathata kapele.

Tafole e ka tlase e hlalosa hore na ke hobane'ng ha mohato ka mong e le oa bohlokoa ho sebetsa hantle le ho lokisa litaba:

Lintlha tsa bohlokoa

• Ithute kamoo mokhoa oa pelletizing o sebetsang kateng ho etsa hore e be betere le ho lokisa mathata kapele.
• Sheba mocheso le lebelo la screw ho boloka boleng ba pellet bo tšoana le ho theola liphoso.
• Hlokomela lisebelisoa hangata ho tsoela pele ho etsa tse ngata le ho emisa litaba tsa mochini.
• Sebelisa le mehato e nepahetseng ya ho omisa le ho phodisa ho etsa hore mapele a be matla le ho a thibela ho kgomarela.
• Lekola thepa ea thepa ho etsa hore mokhoa oa pelletizing o sebetse hantle bakeng sa lipolasetiki tse fapaneng.

Ke Eng Pelletizing Extruder

Mosebetsi o ka Sehloohong

A pelletizing extruder e fetola polasetiki e tala kapa polima hore e be liphatlalatso tse nyane. Mochini o o lumella ho laola hore na pellet ka 'ngoe e kholo hakae le hore na e pota-potile hakae. Baetsi ba sebelisa li-pellet extruders ho etsa dihlahiswa tse kopanang le melao e thata. U ka fetola likotoana tsa litšila kapa resin e ncha hore e be li-pellets tse phallang hantle le ho sebetsa mechini e meng.

Pelletizing extruders li bohlokoa ho etsa polasetiki le polymer. Li u thusa ho sebetsa kapele, senya hanyane, 'me u fumane liphetho tse tsitsitseng.

Tafole ke ena e bontšang seo a pelletizing extruder e etsa:

Likarolo Tsa Sehlooho

A pellet extruder e na le likarolo tse ngata tse sebetsang 'moho ho etsa li-pellets. Karolo ka 'ngoe e na le mosebetsi oa eona.

• Hopper: U kenya thepa e tala ka har'a hopper. E qala tsohle.
• Screw: Sekurufu se sutumelletsa thepa pele ebe ea e kopanya. Li-screws tse telele li kopanya hantle ebe li qhibilihisa polasetiki kapele.
• Moqomo: Moqomo o futhumatsa thepa. E etsa bonnete ba hore ho qhibiliha ho bonolo.
• Sekhahla sa Sekhahla: Letlapa lena le tšoara litšila 'me le boloka khatello e tsitsitse.
• Adapter: Adapter e tsamaisa thepa e qhibilihisitsoeng ho ea ho dae.
• Sisteme ea lefu: The die e bopa polasetiki e qhibidihileng. E laola hore na li-pellets li tenya le tse thata hakae.
• Mokhoa oa ho Pholisa: Mekhoa ea ho pholisa e etsa hore li-pellets li be thata ka mora hore ba tswe. Ba sebelisa moea, metsi, kapa diphate tse thibelang di-pellets ho fetola sebopeho.
• Tsamaiso ea Thipa (Motho ya sehang): Motho ea sehang o khaola polasetiki e pholileng ka li-pellets. U fumana li-pellets tse lekanang ka boholo le sebōpeho.

Ba bang li-pellet extruders ho ba le litsamaiso tsa ho omisa. Lisebelisoa tsena li ntša metsi 'me li boloka li-pellets li le ntle.

Lethathamo le ka tlase le bontša likarolo tse kholo le seo li se etsang:

U ka fetola moralo oa likarolo tsena ho lumellana le litlhoko tsa hau. Sistimi ea othomathike e u thusa ho laola mocheso le ho u lemosa ka mathata. Lisebelisoa tsa ho futhumatsa le ho omisa li boloka li-pellets li le matla le ho sireletsa boleng ba tsona.

Mokhoa oa Pelletizing Extruder

Extruder ea pelletizing e sebetsa ka mehato. Mohato o mong le o mong o fetola thepa e tala hore e be li-pellets tse shebahalang li tšoana. U hloka ho tseba mohato o mong le o mong ho o fumana li-pellets tse ntle.

Ho Fepa Lintho Tse Molemo

Ea pele, o kenya lintho tse tala ka har'a extruder. Hopper e tšoara thepa. Boitsebiso bona bo ka ba li-flakes tsa polasetiki, li-granules, kapa phofo. Lisebelisoa tse ling tse tloaelehileng ke polyethylene, polypropylene, ABS, nylon, le PLA. U ka sebelisa li-feeders tse khethehileng ho laola hore na ke lintho tse kae tse kenang. Ka linako tse ling, o hloka ho omisa thepa pele. Ho omisa ho bohlokoa bakeng sa lipolasetiki tse nkang metsi. Ho omisa ho emisa li-bubble le mathata a mang a pellets.

Mokhoa oa ho fepa o laola hore na ke lintho tse kae tse kenang ka hare. Haeba u fepa chelete e lekanang nako le nako, li-pellets li betere. Boholo ba likotoana le hore na li metsi hakae le tsona ke taba. Likotoana tse nyane le palo e nepahetseng ea metsi li thusa ho etsa li-pellets tse matla.

Ho qhibiliha le Homogenization

E 'ngoe, sekoti se sutumelletsa thepa pele. Moqomo oa chesa ebe o qhibilihisa polasetiki. Sebopeho sa screw se bohlokoa mona. Li-screw tse ling li kopanya thepa hantle le ho boloka mocheso o lekana. Ho kopanya ho thusa ho kopanya linthong tse kang 'mala kapa li-stabilizers.

U tlameha ho beha mocheso o nepahetseng bakeng sa polasetiki ka 'ngoe. Ka mohlala, polypropylene e qhibiliha pakeng tsa 200°C le 260°C. ABS e qhibiliha lipakeng tsa 210°C le 250°C. Tafole e ka tlase e bonts'a mocheso o qhibilihang bakeng sa lipolasetiki tse fapaneng:

Ho qhibiliha hantle le ho kopanya ho etsa hore polasetiki e qhibilihisitsoeng e be boreleli. Mohato ona o tlosa li-bubble tsa moea ebe o kopanya ntho e 'ngoe le e' ngoe hammoho. Hona joale polasetiki e qhibilihisitsoeng e se e loketse mohato o latelang.

Extrusion Through Die

Plastiki e qhibilihisitsoeng e fallela tsamaisong ea lefu. The die e bopa polasetiki hore e be likhoele kapa mefuta e meng. Lefu le sebetsa joalo ka hlobo. E laola boholo le sebōpeho sa li-pellets. Sebōpeho sa lefu ke sa bohlokoa. E etsa qeto ea hore na li-pellets li tenya le bophara hakae. Lefu le monate le u fa li-pellets tse shebahalang li tšoana.

Khatello le lebelo mona li fetola hore na li-pellets li ntle hakae. U hloka ho boloka tsena li tsitsitse bakeng sa li-pellets tse ntle ka ho fetisisa.

Mokhoa oa ho Pholisa

Kamora ho tloha lefung, polasetiki e ntse e chesa ebile e le bonolo. Tsamaiso ea ho pholisa e etsa hore li-pellets li be thata 'me li boloke sebōpeho sa tsona. Pholiso ea metsi e sebelisoa haholo hobane e pholile kapele le ka ho lekana. Mechini e meng e sebelisa ho pholisa moea bakeng sa lipolasetiki tse qhibilihang mochesong o fokolang. Ho itšeha ka tlas'a metsi ho pholisa li-pellets hang-hang. Sena se molemo bakeng sa li-plastiki tse qhibilihang habonolo.

Ho pholisa ho tlameha ho lekana. Haeba u pholile kapele kapa butle haholo, li-pellets li ka robeha kapa tsa fetola sebopeho. Pholiso e ntle e boloka li-pellets li le matla 'me li shebahala hantle.

Ho Khaola ka Li-Pellets

Ha li-pellets li pholile, ba ea ho sehang. Thipa e bilikang e khaola likhoele hore e be li-pellets. Lebelo le mofuta oa lehare li fetola bolelele le botenya ba li-pellets. Li-blades tse ngata kapa ho khaola ka potlako ho etsa li-pellets tse khutšoanyane. Moo u behang sehahi litaba le tsona. Haeba e le haufi haholo le lefu, e fela kapele. Haeba e hole haholo, li-pellets ha li tšoane.

U ka khaola li-pellets ka litsela tse fapaneng:

• Strand pelletizing: Khaola ka mor'a ho pholile ka metsing.
• Pelletizing e chesang e chesang: Khaola hantle sefahlehong sa lefu.
• Pelletizing ka tlas'a metsi: Khaola ka metsing bakeng sa ho pholile kapele.

Mokhoa o mong le o mong o sebetsa hantle bakeng sa lipolasetiki tse itseng le mesebetsi.

Pokello Le Taolo ea Boleng

U bokella li-pellets tse phethiloeng qetellong. Ka linako tse ling, o hloka ho li omisa ho tlosa metsi. Mona ke moo u hlahlobang li-pellets bakeng sa boholo, sebopeho, le bohloeki. U leka li-pellets ebe u tlosa tse mpe. Lik'hamphani tse ling li sebelisa liteko tse khethehileng tsa polasetiki tse hlokang ho hloeka haholo.

U tlameha ho latela melao ea lefats'e ho etsa bonnete ba hore li-pellets tsa hau li ntle. Licheke tse ntle li bolela hore li-pellets tsa hau li tla sebetsa hantle metjhini e meng.

Keletso: Sheba li-pellets hangata ha u li bokella. Sena se o thusa ho fumana mathata esale pele mme o boloka mochini oa hau o sebetsa hantle.

Haeba u latela mohato ka mong, o fetola thepa e tala hore e be li-pellets tse ntle. Mothati o mong le o mong o bohlokoa bakeng sa ho etsa sehlahisoa sa ho qetela.

Lintlha tse Amang Pelletizing

Ha o sebelisa pelletizing extruder, u tlameha ho laola lintho tse ling. Lintho tsena li u thusa hore u be matla esita le li-pellets. U hloka ho shebella mocheso, lebelo la sekoti, le thepa ea hau ea thepa. E 'ngoe le e' ngoe e ka fetola tsela eo li-pellets tsa hau li shebahalang ka eona. Li boetse li ama tsela eo mochini oa hau o sebetsang hantle ka eona.

Taolo ea Mocheso

U tlameha ho hlahloba mocheso ka linako tsohle. Mocheso o nepahetseng o thusa li-pellets ho khomarela hantle. Ha mocheso o le haufi le ntlha e khethehileng e bitsoang T*, nako litabeng tsa lefu. Lekhetlong lena le fetola hore na li-pellets tsa hau li thata hakae. Haeba u feta T*, li-pellets li khomarela kapele empa lia fokola. Taolo e ntle ea mocheso e etsa hore li-pellets li tšoarelle nako e telele 'me li se ke tsa robeha. E boetse e boloka li-pellets tsa hau li le ntle ebile e emisa litšila.

Keletso: Sebelisa lisensara ho hlahloba mocheso hangata. Sena se o thusa ho lokisa mathata kapele.

Screw Speed

Lebelo la screw le fetola hore na o etsa li-pellets kapele hakae. Haeba screw e tsamaea ka potlako haholo, li-pellets li ka 'na tsa se ke tsa shebahala hantle. Ba ka boela ba fumana li-bubble tsa moea. Haeba screw e lieha haholo, o etsa li-pellets tse fokolang. U hloka ho fumana lebelo le nepahetseng bakeng sa thepa ea hau le mochini. Leka lebelo le fapaneng 'me u shebe li-pellets tsa hau khafetsa. Sena se u thusa ho boloka boleng ba pellet bo tšoana le ho emisa mathata.

Thepa Thepa

Mofuta oa thepa eo u e sebelisang le eona ke ea bohlokoa. U lokela ho nahana ka mongobo le viscosity. Mona ke kamoo lintho tsena li fetolang li-pellets tsa hau kateng:

• Metsi a mangata a etsa hore li-pellets li be mongobo le ho ba matla, empa li shebahala li le lefifi ho feta.
• Metsi a mangata e fokotsa viscosity, kahoo thepa e phalla habonolo.
• Likotoana tse nyenyane li etsa hore thepa e be e teteaneng le ho ba thata ho sutumetsa.

O ka fetola extruder ea hau bakeng sa lisebelisoa tse fapaneng. Ka mohlala, o ka sebelisa sebopeho se khethehileng sa lefu. Tafole e ka tlase e bontša hore na u ka fetola mokhoa oa hau joang:

U ka boela ua sebelisa litsamaiso tsa co-extrusion. Tsena li u lumella ho kopanya lisebelisoa le ho etsa li-pellets tse kolobisitsoeng bakeng sa ts'ebeliso e khethehileng.

Haeba u laola lintho tsena, o etsa li-pellets tse betere. U boetse u boloka mokhoa oa hau oa pelletizing o sebetsa hantle.

Pellet Extruder Troubleshooting

Mathata a Tloaelehileng a Boleng ba Pellet

Ka linako tse ling, u bona mathata ka li-pellets tsa hau. Mathata ana a ka fetola hore na li-pellets tsa hau li shebahala joang kapa li sebetsa joang. Lintlha tse ling tseo u ka li fumanang ke tsena:

• Agglomeration kapa likhohlopo tse kholo li etsahala haeba li-pellets li chesa haholo kapa metsi a le tlase haholo.
• Lichelete le moriri oa lengeloi lia hlaha haeba malebela a orifice a robeha kapa thipa e sa tsamaee hantle.
• Mafahla, triplets, 'me liketane li theha haeba thipa e potlakile haholo kapa sehlahisoa se chesa haholo.
• Masapo a lintja le li-dumbbells li hlaha haeba mahare a felile kapa thepa e sa lekaneng.
• Mohatla o thehoa haeba lekhalo pakeng tsa thipa le lefu le le leholo haholo kapa lekhalo le sa batalle.
• Bolelele le litsoe li etsahala haeba thipa e lieha haholo kapa sekhahla sa extrusion se le holimo.
• Li-voids tsa ka hare le li-popcorn li ka hlaha haeba polima e na le metsi kapa e pholile ka potlako haholo.
• Li-dimples le lerōle li hlaha haeba sehlahisoa se honyela ka potlako kapa se robeha.
• Ho robeha ha bokaholimo kapa ho qhibiliha ha lithōle kapa litelu li etsahala haeba sekhahla sa extrusion se le holimo kapa thipa e sa lokisoe hangata..
• Li-pellets tse sa shebahaleng ka tsela e ts'oanang li ka tsoa ho fetoha ha mocheso kapa mocheso o sa lekaneng.

U ka sebelisa lisebelisoa tse joalo Setšoantšo sa Ishikawa fishbone kapa ea 5 Whys mokhoa oa ho fumana hore na phoso ke efe. Lisebelisoa tsena li u thusa ho thathamisa lisosa le ho sheba bothata ka botebo.

Mathata a Mechini le Ts'ebetso

Mathata a mechine le a tshebetso a ka boela a senya pelletizing. U ka bona tlhahiso e sa lekanang, tlhahiso e tlase, kapa li-pellets tse mpe. Mathata le litsela tsa ho a lokisa ke tsena:

1. Haeba boholo ba pellet le sebopeho li sa nepahale, fetola mocheso oa lefu, boloka mahare a bohale, 'me u hlahlobe lekhalo la lehare.
2. Haeba u bona tlhahiso e fokolang kapa jams, sheba likoti tse koetsoeng 'me u netefatse hore thepa e tsamaea hantle ka har'a hopper.
3. Haeba extruder kapa enjene e chesa haholo, hlahloba tsamaiso ea ho pholisa 'me u shebe ho khohlakana kapa mochine o sebetsang ka thata haholo.
4. Haeba li-pellets ha li ntle, hlahloba mocheso, tšoara thepa ka hloko, le lisebelisoa tse omeletseng tse nkang metsi.

U lokela hape ho hlahloba hore na ha ho na screw wear, melumo e makatsang, le ho thothomela. Matšoao ana a ka bolela hore likarolo li aparoa kapa ho na le ntho e itseng e sa lokelang ho ba teng. Ho hlahloba le ho lokisa lintho hangata ho boloka pelletizing ea hau e boreleli le li-pellets tsa hau li tšoana.

Keletso: Ngola mathata le hore na u a rarolla joang. Sena se o thusa ho bona dipaterone le ho lokisa dintho kapele nakong e tlang.

U ka ithuta mohato o mong le o mong oa ts'ebetso ea pelletizing extruder. Ho laola mocheso le ho pholisa ho thusa ho etsa matla, li-pellets tse tšoanang. Ho ntlafatsa mokhoa oa ho tsamaisa mochini oa hau ho fokotsa litšila le ho boloka chelete. Ha li-pellets li phalla hantle, jeme ha e na monyetla, mme mosebetsi o dula o tsitsitse. Ho qhibiliha ho nepahetseng le ho kopanya ho etsa li-pellets tse finyellang litekanyetso tse phahameng. Sena se boetse se thusa ho fokotsa tahlehelo ea thepa le ho etsa hore tlhahiso e potlake. Hore na o mocha kapa o na le boiphihlelo, tsoela pele ho itloaetsa ho etsa li-pellets tse ntle ka ho fetisisa nako le nako.

• Mocheso o tsitsitseng le ho pholisa ho etsa li-pellets tsa boleng bo holimo.
• Ho ntlafatsa ts'ebetso ea hau ho etsa hore li-pellets li lumellane le ho fokotsa litšila.
• Li-pellets li phalla habonolo, e etsang hore ho tshoaroa ha bonolo le ho thibela jeme.
• Esita le ho qhibiliha le ho kopanya ho hlahisa li-pellets tse tsitsitseng.
• Pelletizing e boloka thepa mme e eketsa ts'ebetso.

LBH

Ke lisebelisoa life tseo u ka li sebelisang ho pelletizing extruder?

U ka sebelisa mefuta e mengata ea polasetiki. Mehlala e meng ke polyethylene, polypropylene, ABS, nylon, le PLA. Mechini e meng e ka boela ea sebelisa polasetiki e nchafalitsoeng kapa metsoako. Kamehla etsa bonnete ba hore extruder ea hau e sebetsa le thepa ea hau.

U etsa joang hore li-pellets li se ke tsa khomarelana?

Omisa lintho tsa hau pele u li fepa. Khetha mokhoa o motle oa ho pholile oa polasetiki ea hau. Boloka mocheso o le mong. Mehato ena e u thusa ho fumana li-pellets tse matla tse sa kgomareleng.

Ke hobane'ng ha li-pellets ka linako tse ling li na le libopeho tse sa tšoaneng?

Li-pellets li ka shebahala li sa lekane haeba lefu kapa sehahi se na le mathata. Sheba hore na li-blades li khathetse kapa hore na likoti li koetsoe. Lebelo le fosahetseng la screw le lona le ka baka sena. Lokisa lintho tsena ho etsa li-pellets tse lekanang.

U lokela ho hloekisa extruder ea hau ea pelletizing hangata hakae?

• Hloekisa extruder ea hau ka mor'a nako le nako ha u qeta ho etsa li-pellets.
• Ntša lintho tse setseng 'me u batle ho haha.
• Ho hloekisa hangata ho boloka li-pellets tsa hau li le ntle le mochini oa hau o sebetsa hantle.