Karolo ea sekoti sa extruder ho extruder

Ea extruder screw e sebeletsajoalo ka "pelo" ea extruder, e bapala karolo ea bohlokoa ts'ebetsong ea extrusion. E etsa mesebetsi e meraro ea mantlha ea bohlokoa bakeng sa ts'ebetso e sebetsang ea thepa:

• Ho Fetisa Lisebelisuoa: Sekoti se tsamaisa resin ea polymer ka har'a moqomo oa extrusion, ho etsa bonnete ba hore phallo e tsitsitseng e lebisa lefung.
• Thepa e qhibilihang: Ha screw e ntse e potoloha, e hlahisa mocheso, e qhibilihisa resin le ho e lokisa bakeng sa ho bopa.
• Ho Kopanya Lisebelisoa: Moralo oa screw o ntlafatsa ho tsoakoa ha thepa, ho bohlokoa bakeng sa ho fihlela sehlahisoa se tšoanang.

Mesebetsi ena e susumetsa haholo boleng ba sehlahisoa le katleho ea ts'ebetso, e etsa hore screw ea extruder e be ea bohlokoa indastering ea extrusion.

Mesebetsi ea mantlha ea Screw ea Extruder

The extruder screw e phetha karolo ea bohlokoa ts'ebetsong ea extrusion, e etsa mesebetsi e 'maloa ea bohlokoa e netefatsang ts'ebetso e sebetsang ea thepa. Ho utloisisa mesebetsi ena ho thusa ho utloisisa bohlokoa ba screw extruder tlhahisong.

Ho Fetisa Lisebelisuoa

Mosebetsi oa mantlha oa screw extruder o kenyelletsa ho tsamaisa thepa ka moqomo oa extrusion. Ha screw e ntse e potoloha, e sutumelletsa resin ea polymer pele, e netefatsa phallo e tsitsitseng e lebisang lefung. Motsamao ona o bohlokoa bakeng sa ho boloka sekhahla sa tlhahiso e tsitsitseng le ho fihlela boleng bo tšoanang ba sehlahisoa. Moralo oa screw, ho kenyeletsoa karo-karolelano ea bolelele ho isa ho bophara, e ama ka kotloloho bokhoni ba eona ba ho fetisa thepa ka nepo. Sekurufu se entsoeng hantle se tiisa tšebetso e nepahetseng 'me se fokotsa kotsi ea litšitiso.

Thepa e qhibilihang

Lisebelisoa tse qhibilihang ke mosebetsi o mong oa bohlokoa oa screw extruder. Ha screw e ntse e potoloha, e hlahisa mocheso o tsitsitseng, o qhibilihisang resin ea polymer. Mokhoa ona o lokisetsa boitsebiso bakeng sa ho bopa le ho bopa. Ho sebetsa hantle ha ho qhibiliha ho ipapisitse le liparamente tsa geometric tsa screw, joalo ka tekanyo ea compression le profil. Lintlha tsena li susumetsa tlhahiso ea mocheso le ho ajoa ka har'a moqomo oa extrusion. Ho qhibiliha ho nepahetseng ho bohlokoa bakeng sa ho hlahisa lihlahisoa tsa boleng bo holimo tse nang le thepa e tsitsitseng.

Ho Kopanya Lisebelisoa

The extruder screw e boetse e phetha karolo ea bohlokoa ho kopanya thepa. Ho kopanya ka katleho ho netefatsa motsoako o tšoanang oa li-polymers le li-additives, tse bohlokoa bakeng sa ho finyella litšobotsi tse lakatsehang tsa sehlahisoa. Moralo oa screw, ho kenyeletsoa lijo tsa groove le profil ea screw, e ntlafatsa bokhoni ba eona ba ho kopanya. Sistimi e telele ea screw e ntlafatsa ts'ebetso ea homogenizing, leha e ka eketsa kotsi ea ho senyeha ha thepa. Ka hona, ho khetha moralo o nepahetseng oa screw ho bohlokoa bakeng sa ho ntlafatsa ts'ebetso ea ho kopanya le ho boloka botsitso ba sehlahisoa.

Liphuputso tsa Lipatlisiso tsa Mahlale:

• Ho Utloisisa Mathata a Mekhahlelo ea Extruder ka Plastic Extrusione totobatsa bohlokoa ba moralo oa screw ho ntlafatsa ts'ebetso ea extrusion.
• Karolo ea Moralo oa Screw ho Ts'ebetso ea Mochini oa Extrusione hatisa phello ea li-parameter tsa geometri ka katleho ea extrusion.

Bokhoni ba "extruder screw" ba ho fetisa, ho qhibiliha, le ho kopanya lisebelisoa bo susumetsa haholo ts'ebetso ea kakaretso ea ts'ebetso ea extrusion. Ka ho khetha moralo o nepahetseng oa screw, bahlahisi ba ka ntlafatsa boleng ba sehlahisoa le ho holisa katleho ea tlhahiso.

Likarolo tsa Moralo oa Screw ea Extruder

Karolelano ea bolelele ho isa ho bophara

Karolelano ea bolelele-ho-diameter (L/D) ea screw extruder e bapala karolo ea bohlokoa ts'ebetsong ea eona. Karolelano ena e bolela karolo lipakeng tsa bolelele ba screw le bophara ba eona. Ho tloha khale, litokelo tsa molao tsa pele tsa li-scruder extruder screws, tse entsoeng ke baqapi ba kang Mathew Gray le Francis Shaw, li ne li e-na le litekanyetso tse khutšoane tsa L/D ho tloha ho 3:1 ho isa ho 6:1. Meralo ena ea pele e ne e tsepamisitse maikutlo ho theheng khatello ka likanale tse tebileng le ho fokotseha ha angle ea lead.

Ho eketsa karo-karolelano ea L / D ho ntlafatsa bokhoni ba screw ea ho sebetsa thepa ka katleho. Sekoti se selelele se fana ka nako e eketsehileng ea hore thepa e qhibilihe le ho tsoakana, e ntlafatsa boleng ba polasetiki. Bolelele bona bo atolositsoeng bo lumella kabo e ntle ea mocheso, e leng bohlokoa bakeng sa ho kopanya le polasetiki ea polasetiki. Hangata bahlahisi ba lokisa tekanyo ea L/D ho ntlafatsa ts'ebetso ea screw bakeng sa lisebelisoa le lits'ebetso tse ikhethileng.

Khetho ea Lintho

Khetho ea lisebelisoa bakeng sa li-screws tsa extruder ke karolo e 'ngoe ea bohlokoa ea moralo. Khetho ea thepa e ama ho tšoarella ha screw, ho hanyetsa le ho sebetsa hantle ka kakaretso. Hangata bahlahisi ba sebelisa li-alloys tsa tšepe tse matla haholo bakeng sa thepa ea bona e babatsehang ea mochine le ho hanyetsa ho apara le ho senya. Lisebelisoa tsena li netefatsa hore screw e ka mamella likhatello tse phahameng le mocheso o kopanang le oona nakong ea ts'ebetso ea extrusion.

Maemong a mang, bahlahisi ba ka sebelisa liphekolo tsa bokaholimo kapa likoahelo ho ntlafatsa ts'ebetso ea screw ho ea pele. Litlhare tsena li ka ntlafatsa ho hanyetsa ha moaparo le ho fokotsa khohlano, e leng se lebisang ho matlafatseng a eketsehileng le bophelo bo bolelele ba ts'ebeletso. Ho khetha thepa e nepahetseng le kalafo bakeng sa screw ea extruder ho bohlokoa bakeng sa ho boloka ts'ebetso e nepahetseng le ho netefatsa hore lisebelisoa li phela nako e telele.

Mefuta ea Extruder Screws

Single Screw Extruders

Li-extruders tse nang le sekheo se le sengsebetsa e le mofuta o atileng haholo indastering ea extrusion. Li na le likarolo tse tharo tse kholo: sistimi ea extrusion, sistimi ea phetiso, le sistimi ea ho futhumatsa le ho pholisa. Karolo e 'ngoe le e' ngoe e etsa mosebetsi o ikhethileng, e tlatsetsang katlehong ea kakaretso ea ts'ebetso ea extrusion. Bolelele ba screw, bophara, bophahamo le botebo ba eona bo fapana ho ea ka likarolo tsena, 'me e ama ts'ebetso ea extruder. Li-extruder tsa "screw" tse nang le "single-screw" li tsamaisa hantle, li qhibilihisa, 'me li kopanya lisebelisoa, li etsa hore li tšoanelehe bakeng sa lits'ebetso tse fapaneng. Bonolo ba bona le litšenyehelo tsa bona li etsa hore e be khetho e ratoang ho bahlahisi ba bangata.

Twin Screw Extruders

Li-extruders tsa li-twin-screwe na le li-screw tse peli tse bapileng tse potolohang ka har'a moqomo o le mong. Moralo ona o fana ka maemo a feto-fetohang le taolo e phahameng ha e bapisoa le li-extruder tse nang le sekoaelo se le seng. Li-screw li ka potoloha ka lehlakoreng le le leng (li-co-rotation) kapa ka mahlakoreng a fapaneng (li-counter-rotating). Li-extruder tse nang le li-twin-screw li ipabola ka ho kopanya le ho etsa polasetiki, e leng se etsang hore e be tse loketseng mesebetsi e rarahaneng ea ho lokisa. Ba ka kopanya lisebelisoa tse kenngoeng ka har'a moqomo, ba ntlafatsa ts'ebetso ea ts'ebetso ea extrusion. Li-screws tsa intermeshing li fana ka bokhoni bo betere ba ho kopanya, ho netefatsa hore ho na le motsoako o tšoanang oa li-polymers le li-additives.

Barrier Screws

Li-screws tsa thibeloemela sebopeho se ikhethileng sa screw se etselitsoeng ho ntlafatsa ts'ebetso ea lits'ebetso tsa polasetiki tsa extrusion. Li-screws tsena li na le sefofane se thibelang sefofane se arolang polima e tiileng le e qhibilihisitsoeng, e lumellang ho qhibiliha le ho tsoakana ho sebetsang hantle. Sefofane se thibelang sefofane se tiisa hore ke lintho tse qhibilihisitsoeng feela tse tsoelang pele ka screw, ho ntlafatsa boleng ba sehlahisoa se extruded. Li-barrier screws li sebetsana le litlhoko tse khethehileng tsa ts'ebetso, li fana ka kabo e ntlafalitsoeng ea mocheso le kotsi e fokotsehileng ea ho senyeha ha thepa. Moralo oa bona o ntlafatsa ts'ebetso ea extrusion, e ba etsa hore e loketse lits'ebetso tse hlokang taolo e nepahetseng holim'a thepa ea thepa.

Tšusumetso ea Moralo oa Screw ka Katleho ea Extrusion

Metrics ea Ts'ebetso

Moralo oa Screw o susumetsa haholo ts'ebetso ea extrusion. Baetsi ba lekola ts'ebetso ba sebelisa metrics e fapaneng. Metric e 'ngoe ea bohlokoa ke sekhahla sa phallo, se lekanyang palo ea thepa e sebetsoang ka nako.Li-screw tse tebilengka li-volumes tse kholo tse sa lefelloeng hangata li finyella litekanyetso tse phahameng tsa ho feta ha li bapisoa le li-screws tse sehiloeng sephara tse nang le mefuta e menyenyane ea mahala. Phapang ena e totobatsa bohlokoa ba screw geometry ho ntlafatsa lebelo la tlhahiso.

Metric e 'ngoe ea bohlokoa ke tšebeliso ea matla. Sena se kenyelletsa ho lekola hore na sekurufu se fetola matla joang hore e be mocheso o qhibilihang le khatello. Meetso e sebetsang hantle ea screw e fokotsa tšebeliso ea matla ha e ntse e boloka maemo a nepahetseng a ts'ebetso. Ka ho sekaseka liponto ka hora khahlano le RPM, bahlahisi ba ka tseba hore na screw e sebetsa hantle hakae ho sebetsa thepa. Tlhahlobo ena e thusa ho bapisa meralo e fapaneng ea screw le ho khetha e loketseng lits'ebetso tse ikhethileng.

Litlhahiso ho Theknoloji ea Screw

Mekhoa e mecha ea theknoloji ea screw e ntse e tsoela pele ho ntlafatsa mekhoa ea extrusion. Baenjineri ba lula ba lekola meralo e mecha ho ntlafatsa ts'ebetso le katleho. Tsoelo-pele e 'ngoe e hlokomelehang ke nts'etsopele ea li-screws tse telele. Li-screws tsena li ntlafatsa ts'ebetso ea homogenizing le ho kopanya, ho netefatsa motsoako o ts'oanang oa thepa. Leha ho le joalo, li-screws tse telele li ka eketsa kotsi ea ho senyeha ha thepa, ho hloka hore ho nahaneloe ka hloko.

Ntho e 'ngoe e ncha e kenyelletsa tšebeliso ea lisebelisoa tse tsoetseng pele le liphahlo. Hona joale bahlahisi ba sebelisa li-alloys tsa tšepe tse matla haholo le lirafshoa tse khethehileng ho matlafatsa ho tšoarella ha screw le ho se mamelle. Lisebelisoa tsena li mamella likhatello tse phahameng le mocheso tse kopanang le tsona nakong ea extrusion, li lelefatsa bophelo ba tšebeletso ea screw le ho boloka ts'ebetso e tsitsitseng.

Indasteri Insight:

• Meetso e tsoetseng pele ea Screw ho Extrusione lekola phello ea litheknoloji tse nchafalitsoeng tsa screw holim'a katleho ea extrusion.
• Tsoelo-pele ea Boitsebiso ho Extruder Screwse totobatsa karolo ea lisebelisoa tse ncha ho ntlafatsa ts'ebetso ea screw le bophelo bo bolelele.

Ka ho amohela lintlafatso tsena, bahlahisi ba ka ntlafatsa lits'ebetso tsa extrusion, ba ntlafatsa boleng ba sehlahisoa, le ho fokotsa litšenyehelo tsa ts'ebetso. Phetoho e tsoelang pele ea theknoloji ea screw e tšepisa tsoelo-pele e thabisang bakeng sa indasteri ea extrusion, e bula tsela bakeng sa mekhoa ea tlhahiso e sebetsang hantle le e tsitsitseng.

The extruder screw e eme e le karolo ea bohlokoa ts'ebetsong ea extrusion, e etsa mesebetsi ea bohlokoa joalo ka ho tsamaisa, ho qhibiliha le ho kopanya lisebelisoa. Moralo oa eona o ama ka kotloloho boleng ba sehlahisoa le katleho ea ts'ebetso. Tsoelo-pele ea theknoloji ea screw e tšepisa ho ntlafatsa likarolo tsena le ho feta, ho fana ka ts'ebetso e ntlafetseng le ts'ebetso e tsitsitseng. Indasteri e lokela ho tsoela pele ho hlahloba meralo le lisebelisoa tse ncha ho ntlafatsa lits'ebetso tsa extrusion. Ka ho etsa joalo, bahlahisi ba ka finyella katleho e phahameng le liphello tse molemo tsa sehlahisoa, ho bula tsela bakeng sa tsoelo-pele ea nakong e tlang ea theknoloji ea extrusion.

Bona Hape

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