What is a parallel twin screw barrel?

It is a twin-bore barrel holding two constant-diameter intermeshing screws that run side by side. Unlike a conical barrel, the screws stay the same size end to end and the system is usually segmented, so the screw profile can be reconfigured for different formulations.

What is the difference between co-rotating and counter-rotating?

Co-rotating screws turn the same way and give high-shear mixing at high speed — ideal for compounding and masterbatch. Counter-rotating screws turn oppositely with gentler, pump-like conveying — better for PVC and heat-sensitive, high-filler work.

What is a segment (building-block) parallel twin screw barrel?

It is a modular design where the barrel is bolt-together sections and the screw is keyed elements on a shaft. You can position feed, mixing, vent and metering sections as the recipe needs, and replace only the worn segment instead of the whole screw.

Parallel or conical twin screw barrel — which do I need?

Choose conical for direct PVC pipe, profile, board and sheet extrusion. Choose parallel for granulation, compounding, masterbatch and very high-filler or glass-fibre dispersion, where reconfigurable mixing matters most.

What is a parallel twin screw barrel used for?

Mainly granulation and pelletizing, compounding and masterbatch, PS foaming, aluminum-plastic composite panel, rubber and plastic, and parallel-layout PVC lines. The tunable screw profile lets one machine handle many recipes.

Should a parallel barrel be nitrided or bimetallic?

Clean compounds can run nitrided. Abrasive recipes — high mineral filler, glass fibre, high carbonate — should be bimetallic; a tungsten-added alloy reaching 62 HRC resists that abrasion far longer than a thin nitrided case.

What is a parallel twin screw extruder?

It is the machine that houses a parallel twin screw and barrel, typically co-rotating for compounding and pelletizing. The barrel and screw are the wear heart of the machine and are matched to the extruder and the recipe.

How do I order the right parallel twin screw barrel?

Tell us co- or counter-rotating, your material and output, how abrasive the recipe is, and your extruder brand/model or a drawing. With those, we specify the segments, screw profile and surface treatment and quote within 12 hours.

Parallel Twin Screw Barrel: Co-rotating vs Counter-rotating, Mefuta le Lisebelisoa

2026-08-13 0 Ntlohele molaetsa

Ka hoSehlopha sa Tekheniki sa Nanhaiya- Screw & Barrel Engineering, Zhoushan · E hlahlobiloe bakeng sa ho nepahala ha fektheri · ~ 9 min bala

Karabo e potlakileng

Moqomo o ts'oanang oa "twin screw barrel" o na le likurufu tse peli tse intermeshing tsa bophara bo sa fetoheng tse tsamaeang ka mahlakoreng ka har'a barrel ea mafahla. Ho fapana le moqomo oa conical, li-screws li lula li lekana ho isa qetellong, 'me moqomo o atisa ho hahoa ho tloha likarolong. Co-rotate parallel screws sutu motsoako, granulation le masterbatch; li-screws tse bapileng tse pota-potileng li sutu PVC le mosebetsi oa ho tlatsa holimo.

Thebapile twin screw barrelke mosebetsi oa ho kopanya le ho pelletizing - kae kapa kae moo o hlokang motsoako o matla, taolo e nepahetseng ea mocheso le ho feto-fetoha ha maemo a ho lokisa screw bakeng sa sebopeho se secha. Moo moqomo oa conical o hahiloeng bakeng sa extrusion e tobileng ea PVC, moqomo oa parallel screw o hahiloe bakeng sa ho feto-fetoha ha maemo. Tataiso ena e hlalosa hore na e sebetsa joang, phapang ea bohlokoa lipakeng tsa meralo e potolohang le e khahlano le meralo, sebopeho sa karolo (sehaho sa moaho) se etsang hore se tenyetsehe, le mokhoa oa ho khetha se nepahetseng bakeng sa thepa ea hau.

Parallel twin screw barrel (counter-rotating) manufactured by Nanhaiya — Sekurufu sa mafahla a bapileng le moqomo - likurufu tsa bophara ba kamehla ka har'a moqomo o ts'oanang oa mafahla.

Parallel twin screw barrel ke eng?

Parallel screw barrel e tšoara likurufu tse peli tsa bophara bo lekanang ho tloha ho fepelo ho ea ho ho tsoa, tse tsamaeang ka har'a mafahla a robeli. Hobane bophara bo sa fetohe, boits'oaro ba ts'ebetso bo beoa ke screwtlhophisoeseng ka taper - o fetola ts'ebetso ka ho fetola likarolo tsa screw, eseng sebopeho sa moqomo. Ke ka lebaka leo li-parallel twin screw le barrel system li laolang ho kopanya: mochini o le mong o ka tsamaisa litlolo tse fapaneng haholo ka ho aha sekoti bocha.

Ho na le lintho tse peli tse hlalosang moqomo oa sekoti sa mafahla: tsela eo li-screw li bilikang ka eona (ho pota-pota kapa ho pota-pota), le hore na barrel le screw li hahiloe joang (hangata ho tloha likarolong). Ka bobeli li koahetsoe ka tlase. Bakeng sa mechanics ea mantlha, bona mohlalosi oa rona hokamoo sekurufu sa mafahla se bapileng se sebetsang kateng.

Co-rotating vs counter-rotation

Ena ke phapang ea bohlokoa ka ho fetisisa lelapeng le tšoanang. Ka bobeli ke meralo ea li-twin-screw, empa e fetisa le ho kopanya ka tsela e fapaneng haholo.

Ntlha	Ho tsamaisana ka kopanelo	Khahlanong le ho potoloha
Ho potoloha ha Screw	Li-screw ka bobeli li fetoha ka tsela e tšoanang	Li-Screw li reteleha ka mahlakoreng a fapaneng
Ho kopanya	High-shear, e babatsehang ea ho aba le ho kopanya ho qhalakantsoeng	E bonolo, e tšoana le calender, e fana ka maikutlo a nepahetseng
Lebelo le tlwaelehileng	Lebelo le phahameng la screw, tlhahiso e phahameng	Lebelo le tlase, khatello e tsitsitseng e aha
Molemo ka ho fetisisa bakeng sa	Ho kopanya, masterbatch, granulation, tlatsitsoe/glass-fibre	Pipe ea PVC / profil, e sa utloeng mocheso, PVC e tlatsing ka bongata
Ikutloa	"Mochine o kopanyang" o ka lokisoang bocha	E kang pompo, "mochini oa extrusion" o bonolo

Ka bokhutšoane: sekoti sa mafahla se pota-potileng ke sesebelisoa sa ho kopanya le ho hasana; sekoahelo sa marang-rang se pota-potileng ke sesebelisoa sa ho tsamaisa PVC e bonolo, e tsitsitseng. Limela tse ngata li na le tsona ka bobeli. Haeba mosebetsi oa hau o fetola metsoako hore e be li-pellets, u batla ho potoloha hammoho; haeba e fetola motsoako o omileng oa PVC hore e be phala kapa profil, ho pota-pota (kapa barrel ea conical) ke eona e loketseng hantle.

Segmented parallel twin screw elements on a shaft

Moralo oa moqomo oa karolo (building-block).

Litsamaiso tse ngata tse bapileng li na le modular: barrel e entsoe ka likarolo tse kopaneng tsa bolt le sekoti sa lintho tse kentsoeng ka har'a shaft. Mokhoa ona oa "building-block" ke oona o fanang ka sekoahelo sa marang-rang se tšoanang - o ka beha karolo ea phepelo, likarolo tse 'maloa tsa ho kopanya, karolo ea moea le karolo ea metering hantle moo recipe e li hlokang teng, le ho fapanyetsana lintho tse tsofetseng kapa tse sa lokelang ka bonngoe ho e-na le ho nkela sekoti kaofela sebaka.

Melemo e sebetsang:

Reconfigurable- aha profil ea screw bakeng sa sebopeho se secha ntle le mochini o mocha.
Likarolo tsa ho roala tse reretsoeng- nkela karolo e tsofetseng feela, eseng screw eohle le barrel.
Ho kenya moea moo o e hlokang- beha likarolo tsa moea bakeng sa mongobo le ho tlosoa ha maqhubu.
Kopanya matla ho latela tlhoko- eketsa kapa u tlose li-blocks ho kuta ho kuta.

Parallel vs conical twin screw barrel

Hangata bareki ba na le boima ba 'mele khahlanong le aconical twin screw barrel. Molao o mokhuts'oane: conical bakeng sa extrusion e tobileng ea PVC, e ts'oanang bakeng sa ho kopanya le ho batla ho kopanya.

Ntlha	Parallel twin screw barrel	Conical twin screw barrel
Sebopeho sa screw	Bophara ba kamehla, bo arotsoe	Tapered, a pharaletseng a fepa ho moqotetsane shoa
Matla	Ho kopanya, ho hasana, ho feto-fetoha ha maemo	Phepelo e phahameng & compression ka bolelele bo khuts'oane
Molemo ka ho fetisisa bakeng sa	Granulation, masterbatch, motsoako, li-pellets tsa WPC	Pipe ea PVC, profil, boto, lakane
Ho sebetsana le li-filler	E ntle haholo ho filler e phahameng haholo / khalase-fiber	E ntle; tune ka kalafo ya bokahodimo
Ho tenyetseha	Profaele ea screw e ka lokisoang bocha	Geometry e tsitsitseng ka boholo

Lisebelisoa

Hobane profil ea screw e ka hlophisoa mosebetsing, moqomo o ts'oanang oa sekoti o koahela mesebetsi e mengata. Litlhophiso tse tloaelehileng Nanhaiya li kenyelletsa:

Granulation le pelletizing- mosebetsi oa khale o tšoanang; bona tsa ronabapile twin screw pelletizing line.
Ho kopanya & masterbatch- ho qhala li-pigments, li-additives le li-filler ka har'a resin e tsamaisang thepa.
PS e phophomang- bonaPS e phophomang parallel twin screw.
Phanele e kopantsoeng ea aluminium-plastiki- bonapoleiti ea aluminium-plastic parallel twin screw.
Rabara & polasetiki- bonarabara le polasetiki e bapileng sekoti sa mafahla.
Pipe ea PVC (e bapileng)- bakeng sa mela e tsamaisanang ka tsela e tšoanang ho fapana le sebopeho sa conical:PVC pipe parallel screw barrel.

Parallel twin screw pelletizing line for compounding and granulation — A parallel twin screw pelletizing line - lehae le atileng haholo bakeng sa moqomo o bapileng o potolohang.

PS foaming parallel twin screw and barrel — Sekurufu sa mafahla a bapileng le moqomo o etselitsoeng PS ho phophoma.

Phekolo ea lintho tse bonahalang le holim'a metsi

Ho kopanya ke mosebetsi o senyang - fiber ea khalase, lithaelese tsa liminerale le likhahla tse phahameng tsa carbonate li roala li-screw le libarele kapele - ka hona, kalafo ea thepa le bokaholimo li bohlokoa haholo tsamaisong e bapileng joalo ka ea conical. Nanhaiya e haha li-screw tse bapileng le libarele ho tsoa ho 38CrMoAlA nitrided steel, W6Mo5Cr4V2 kapa HIP powder steel, tse nang le bokaholimo ba nitrided, bimetallic kapa tungsten-carbide ho tsamaisana le ho soahla ha risepe ea hau.

Bakeng sa metsoako e tlatsitsoeng haholo kapa e matlafalitsoeng ka khalase, bokaholimo ba bimetallic ke khetho e bohlale: alloy ea rona e kenyellelitsoeng ea tungsten e fihla.62 HRCka hare ho bore - khahlano le 58 HRC - bakeng sa bophelo bo bolelele ba ts'ebeletso. Libarele tse bapileng li tšoaretsoe ho mamella ±0.01 mm. Haeba u lekanya likhetho tsa bokaholimo, bona tataiso ea rona holibarele tsa bimetallic screw, e sebetsang ka ho lekana ho litsamaiso tse tšoanang.

Mokhoa oa ho khetha e nepahetseng parallel twin screw barrel

Lipotso tse 'ne li u fa litlhaloso tse nepahetseng:

Co- kapa counter-rotating?Ho kopanya le ho etsa pelletizing → ho potoloha hammoho; PVC le ho fetisa ka bonolo → ho chencha-pheta.
U ntse u lokisa eng?Recipe e beha boemo ba "screw profile" - ho kopanya li-blocks bakeng sa ho hasana, li-vents bakeng sa li-volatiles.
E hlaba hakae?Filler e phahameng kapa fiber ea khalase → bokaholimo ba bimetallic / tungsten-carbide.
Mochini ofe?Romella mofuta oa hau oa extruder / mohlala kapa setšoantšo hore likarolo le shaft li lumellane hantle.

Li-screw le libarele tse tšoanang li tloaelehile mochining le risepe, ka hona setšoantšo kapa sampole hammoho le thepa ea hau le tlhahiso li re lumella ho qotsa se lekanang hantle.lesoha, parallel kapa conical screw barrel - kapa e feletsengmochini oa extruder- nakong ea lihora tse 12.

Lipotso tse botsoang khafetsa

Parallel twin screw barrel ke eng?

Ke moqomo o nang le mafahla a nang le likurufu tse peli tse sa fetoheng tse nang le bophara ba bophara tse bapileng. Ho fapana le moqomo oa conical, li-screw li lula li lekana ho isa qetellong 'me sistimi hangata e arotsoe, kahoo profil ea screw e ka hlophisoa bocha bakeng sa liforomo tse fapaneng.

Phapano ke efe lipakeng tsa ho potoloha ka kopanelo le ho potollana?

Li-screws tse pota-potileng li fetoha ka tsela e ts'oanang 'me li fana ka motsoako o phahameng oa ho kuta ka lebelo le phahameng - tse loketseng ho kopanya le masterbatch. Li-screw tse pota-potileng li fetoha ka tsela e fapaneng ka mokhoa o bonolo, o fetisang pompo - ho molemo bakeng sa PVC le mosebetsi o thibelang mocheso, o tlatsang haholo.

Sekhahla (se-building-block) parallel twin screw barrel ke eng?

Ke moralo o hlophisitsoeng moo moqomo o nang le likarolo tse kopaneng tsa bolt 'me screw e le likarolo tsa bohlokoa holim'a shaft. U ka beha likarolo tsa phepelo, motsoako, moea le metering joalo ka ha recipe e hloka, 'me u nkele karolo e tsofetseng feela sebakeng sa screw kaofela.

Parallel kapa conical twin screw barrel - ke hloka eng?

Khetha conical bakeng sa phala e tobileng ea PVC, profil, board le sheet extrusion. Khetha tse bapileng bakeng sa granulation, kompone, masterbatch le phallo e phahameng haholo kapa likhoele tsa khalase, moo ho kopanngoang bocha ho leng bohlokoa haholo.

Parallel twin screw barrel e sebelisetsoa eng?

Haholo-holo granulation le pelletizing, metsoako le masterbatch, PS foaming, aluminium-plastic composite panel, rabara le polasetiki, le mela ea PVC e bapileng. Profaele ea screw e ka sebelisoang e lumella mochini o le mong ho sebetsana le litlolo tse ngata.

Na barrel e tšoanang e lokela ho ba nitrided kapa bimetallic?

Lik'hemik'hale tse hloekileng li ka tsamaisa nitrided. Li-recipe tsa abrasive - ho tlatsa liminerale tse ngata, fiber ea khalase, carbonate e phahameng - e lokela ho ba bimetallic; alloy e kenyellelitsoeng tungsten e fihlang ho 62 HRC e hanana le ho khoaoha hoo nako e telele ho feta mokotla o mosesaane oa nitrided.

Sefahla sa mafahla a bapileng ke eng?

Ke mochini o bolokang sekoti sa mafahla le moqomo o tšoanang, oo hangata o bilikang bakeng sa ho kopanya le ho etsa pelletizing. Moqomo le sekoti ke pelo ea mochini oa mochini mme li tsamaisana le extruder le risepe.

Ke odara joang barrel e nepahetseng ea parallel twin screw?

Re bolelle ho potoloha kapa ho potoloha, thepa ea hau le tlhahiso ea hau, hore na risepe e bohale hakae, le mofuta oa hau oa extruder kapa setšoantšo kapa setšoantšo. Ka tsona, re totobatsa likarolo, boemo ba screw le kalafo ea bokaholimo ebe re qotsa nakong ea lihora tse 12.

Lihlahisoa tse amanang le fektheri ea rona

Aluminum-Plastic Plate Parallel Twin Screw

Aluminium-Plastiki Plate Parallel Twin Screw

Rabara Le Plastic Parallel Twin Screw

PS Foaming Parallel Twin-Screw

PVC Pipe Parallel Screw Barrel

Parallel Twin Screw Pelletizing Line

Twin Screw Extruder

Fumana moqomo o tšoanang oa "screw screw" o tsamaellanang le risepe ea hau

Re bolelle ho potoloha kapa ho potoloha, thepa ea hau le tlhahiso, le mofuta oa hau oa extruder - lienjineri tsa rona li tla hlakisa likarolo, screw profile le kalafo ea bokaholimo. Bakeng sa metsoako ea abrasive, libarele tsa rona tsa bimetallic tse kentsoeng ka tungsten li fihla ho 62 HRC ka har'a bore bakeng sa bophelo bo bolelele ba tšebeletso.

Fumana quote nakong ea lihora tse 12 →

Nanhaiya (Zhoushan) Mechini ea Plastiki · bareki ba 500+ lefatšeng ka bophara ·bapile, conical & lesohascrew barrels &mechine ea extruder