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, Mitundu & Ntchito

2026-08-13 0 Ndisiyireni uthenga

NdiNanhaiya Technical Team- Screw & Barrel Engineering, Zhoushan · Kuunikanso kulondola kwafakitale · ~ 9 min werengani

Yankho lofulumira

Zomangira ziwiri zomangirana zimakhala ndi zomangira ziwiri zolumikizirana zomangirirana motsatana mumigolo yofananira. Mosiyana ndi mbiya ya conical, zomangira zimakhala zofanana kumapeto mpaka kumapeto, ndipo mbiyayo nthawi zambiri imamangidwa kuchokera kumagulu. Zomangira zozungulira zofanana zomangira, granulation ndi masterbatch; zomangira zozungulira zozungulira zofananira zimagwirizana ndi PVC ndi ntchito yodzaza kwambiri.

Thekufanana twin screw mbiyandiye chiwombankhanga chophatikizira ndi ma pelletizing - kulikonse komwe mungafune kusanganikirana kwakukulu, kuwongolera bwino kutentha ndi kusinthasintha kokonzanso wononga kuti mupange mawonekedwe atsopano. Kumene mbiya ya conical imapangidwira kutulutsa mwachindunji kwa PVC, mbiya yofananira imapangidwira kuti ikhale yosinthasintha. Bukhuli likufotokoza momwe limagwirira ntchito, kusiyana kwakukulu pakati pa mapangidwe ozungulira ndi ozungulira, gawo (lomanga-block) lomwe limapangitsa kuti likhale losavuta, komanso momwe mungasankhire yoyenera pazinthu zanu.

Parallel twin screw barrel (counter-rotating) manufactured by Nanhaiya — Parallel twin screw and barrel - zomangira za m'mimba mwake mosalekeza mu mbiya yofananira yoboola mbiya.

Kodi mbiya yowirikiza iwiri ndi chiyani?

Chiboliboli chofananira chimakhala ndi zomangira ziwiri zokhala ndi m'mimba mwake kuchokera ku chakudya mpaka kutulutsa, zomwe zikuyenda muzithunzi zisanu ndi zitatu. Chifukwa m'mimba mwake nthawi zonse, machitidwe opangira amayikidwa ndi screwkasinthidweosati ndi taper - mumasintha magwiridwe antchito posintha zomangira, osati mawonekedwe a mbiya. Ichi ndichifukwa chake ma parallel twin screw ndi mbiya zimachulukirachulukira: makina omwewo amatha kugwiritsa ntchito maphikidwe osiyanasiyana pomanganso screw.

Zinthu ziwiri zimatanthawuza mbiya yofanana yozungulira: komwe zomangira zimatembenukira (zozungulira kapena zozungulira), komanso momwe mbiya ndi zomangira zimamangidwira (nthawi zambiri kuchokera kumagulu). Zonse zili pansipa. Pamakina oyambira, onani wofotokozeramomwe chomangira chofanana chimagwirira ntchito.

Kuzungulira kozungulira motsutsana ndi kuzungulira

Uku ndiye kusiyana kofunikira kwambiri m'banja lofanana. Onsewa ndi ma intermeshing mapasa-screw, koma amawonetsa ndikusakanikirana mosiyana kwambiri.

Factor	Kuzungulira kozungulira kofanana	Kufanana kozungulira-kuzungulira
Kuzungulira kwa screw	Zomangira zonse ziwiri zimatembenuka chimodzimodzi	Zomangira zimatembenukira mbali zosiyana
Kusakaniza	Kumeta ubweya wambiri, kugawa kwabwino & kusakanikirana kobalalika	Wodekha, wonga kalendala, wopereka zabwino
Liwiro lenileni	Kuthamanga kwakukulu kwa screw, kutulutsa kwakukulu	Liwiro lotsika, kuthamanga kokhazikika kumamanga
Zabwino kwambiri za	Kuphatikiza, masterbatch, granulation, kudzazidwa / galasi-ulusi	PVC chitoliro/mbiri, chosamva kutentha, PVC yodzaza kwambiri
Mverani	Zosinthanso "kusakaniza makina"	Pampu-ngati, wofatsa "makina otulutsa"

Mwachidule: chozungulira chozungulira mapasa ndi chida chosakaniza ndi kubalalitsidwa; chopukutira chozungulira chozungulira ndi chida cholumikizira mofatsa, chokhazikika cha PVC. Zomera zambiri zili ndi zonse ziwiri. Ngati ntchito yanu ikusintha zosakaniza kukhala ma pellets, mukufuna kusinthasintha; ngati ikusintha chowuma cha PVC kukhala chitoliro kapena mbiri, kuzungulira (kapena mbiya yozungulira) ndikokwanira bwino.

Segmented parallel twin screw elements on a shaft

Segment (building-block) kapangidwe ka migolo

Makina ofananira ambiri amakhala modula: mbiyayo imapangidwa ndi magawo a bawuti pamodzi ndi zomangira za makiyi olumikizidwa pa shaft. Njira iyi ya "zomangamanga" ndiyomwe imapatsa mbiya yofananira wononga kusinthasintha kwake - mutha kuyika gawo lazakudya, magawo angapo osakanikirana, polowera ndi gawo la metering ndendende pomwe Chinsinsicho chimawafuna, ndikusinthana zinthu zovala kapena zosayenera payekha m'malo mosintha wononga.

Ubwino wothandiza:

Zosinthanso- panganinso mawonekedwe a screw kuti apange mawonekedwe atsopano popanda makina atsopano.
Zida zovalira zomwe mukufuna- sinthani gawo lokhalokha, osati wononga zonse ndi mbiya.
Kutulutsa kumene mukufunikira- ikani magawo olowera mpweya kuti muchepetse chinyezi komanso kuchotsedwa kwamphamvu.
Sakanizani mwamphamvu pakufunika- onjezani kapena chotsani midadada kuti muyimbe ubweya.

Zofanana ndi conical twin screw mbiya

Ogula nthawi zambiri amayesa kufanana ndi aconical twin screw mbiya. Lamulo lalifupi: conical for direct PVC extrusion, kufanana kwa kuphatikizira ndi kufuna kusakaniza.

Factor	Parallel twin screw barrel	Conical twin screw mbiya
Chophimba mawonekedwe	M'mimba mwake nthawi zonse, magawo	Tapered, lonse chakudya chopapatiza kufa
Mphamvu	Kusakaniza, kubalalitsidwa, kusinthasintha	Kudyetsa kwakukulu & kukanikizana muutali waufupi
Zabwino kwambiri za	Granulation, masterbatch, compounding, WPC pellets	PVC chitoliro, mbiri, bolodi, pepala
Filler kusamalira	Zabwino kwambiri pakudzaza kwambiri / galasi-fiber	Zabwino; ikani ndi chithandizo chapamwamba
Kusinthasintha	Zosinthanso screw mbiri	Geometry yokhazikika pa kukula kwake

Mapulogalamu

Chifukwa mawonekedwe a screw amatha kusinthidwa kuti agwire ntchito, mbiya yofananira yamapasa imagwira ntchito zosiyanasiyana. Zosintha zomwe zimachitika ku Nanhaiya ndizo:

Granulation & pelletizing- ntchito tingachipeze powerenga kufanana; onani wathukufanana twin screw pelletizing mzere.
Kuphatikiza & masterbatch- Kumwaza inki, zowonjezera ndi zodzaza mu chonyamulira utomoni.
PS kutulutsa thovu- onaniPS yotulutsa thovu parallel twin screw.
Aluminiyamu-pulasitiki gulu gulu- onanialuminiyamu-pulasitiki mbale parallel twin screw.
Rubber & pulasitiki- onanimphira ndi pulasitiki parallel twin screw.
Chitoliro cha PVC (chofanana)- pamizere yomwe imayendera limodzi m'malo mofanana ndi mawonekedwe:PVC chitoliro parallel screw mbiya.

Parallel twin screw pelletizing line for compounding and granulation — A parallel twin screw pelletizing line - nyumba yodziwika kwambiri ya mbiya yozungulira yozungulira.

PS foaming parallel twin screw and barrel — Zomapawiri zofananira ndi mbiya zopangira thovu la PS.

Chithandizo chakuthupi ndi pamwamba

Kuphatikizira ndi ntchito yopweteka - ulusi wagalasi, zodzaza mchere ndi zodzaza kwambiri za carbonate zimavala zomangira ndi migolo mwachangu - kotero chithandizo chakuthupi ndi pamwamba zimafunikira kwambiri pamakina ofananira monga pa conical. Nanhaiya amamanga zomangira zofananira ndi migolo kuchokera ku 38CrMoAlA nitrided steel, W6Mo5Cr4V2 kapena HIP powder steel, okhala ndi ma nitrided, bimetallic kapena tungsten-carbide kuti agwirizane ndi kuphulika kwa maphikidwe anu.

Pazinthu zodzaza kwambiri kapena zolimbitsa magalasi, pamwamba pa bimetallic ndiye chisankho chanzeru: aloyi athu owonjezera a tungsten amafika.62 HRCmkati mwa bore - motsutsana ndi 58 HRC wamba - kwa moyo wautali wantchito. Migolo yofananira imagwiridwa kuti iloledwe ± 0.01 mm. Ngati mukuyesa zosankha zapamtunda, onani kalozera wathubimetallic screw migolo, zomwe zimagwira ntchito mofanana ndi machitidwe ofananira.

Momwe mungasankhire mbiya yoyenera yofanana ndi mapasa

Mafunso anayi amakufikitsani pamaganizidwe oyenera:

Co- kapena counter-rotating?Kuphatikizira ndi ma pelletizing → kuzungulirana; PVC ndi kufalitsa mofatsa → kutsutsa-kuzungulira.
Mukukonza chiyani?The Chinsinsi amaika wononga mbiri - kusakaniza midadada kwa kubalalitsidwa, mpweya kwa volatiles.
Ndi abrasive bwanji?Zodzaza kwambiri kapena ulusi wagalasi → bimetallic / tungsten-carbide pamwamba.
Makina otani?Tumizani mtundu/chitsanzo chanu cha extruder kapena chojambula kuti zigawo ndi shaft zigwirizane ndendende.

Zomangira zofananira ndi migolo zimakhazikika pamakina ndi maphikidwe, kotero chojambulira kapena zitsanzo kuphatikiza zinthu zanu ndi zomwe mwatulutsa zimatilola kuti tigwire mawu oyenerana ndendende.wosakwatiwa, parallel kapena conical screw mbiya - kapena wathunthumakina extruder- mkati mwa maola 12.

Mafunso omwe amafunsidwa pafupipafupi

Kodi mbiya yowirikiza iwiri ndi chiyani?

Ndi mbiya yokhala ndi mapasa yokhala ndi zomangira ziwiri zopindika m'mimba mwake zomwe zimayenderana. Mosiyana ndi mbiya ya conical, zomangira zimakhala zofanana kumapeto mpaka kumapeto ndipo dongosololi nthawi zambiri limakhala logawanika, kotero kuti mawonekedwe a screw akhoza kusinthidwanso kuti apange zosiyana.

Kodi pali kusiyana kotani pakati pa kusinthasintha ndi kusinthasintha?

Zomangira zozungulira zimatembenuzanso chimodzimodzi ndikupatsa kusakanikirana kometa ubweya wambiri pa liwiro lalikulu - koyenera kuphatikiza ndi masterbatch. Zomangira zozungulira zozungulira zimatembenukira mosiyanasiyana ndi zofewa, ngati mpope - zabwino za PVC komanso ntchito yosamva kutentha, yodzaza kwambiri.

Kodi gawo (building-block) parallel twin screw barrel ndi chiyani?

Ndi kapangidwe kake komwe mbiya imakhala magawo a bawuti palimodzi ndipo zomangira zimakhala zofunikira pa shaft. Mutha kuyika magawo a chakudya, kusanganikirana, polowera mpweya ndi mita monga momwe maphikidwe amafunira, ndikusintha gawo lokhalo m'malo mwa screw yonse.

Parallel kapena conical twin screw mbiya - ndikufunika chiyani?

Sankhani conical kwa chitoliro mwachindunji PVC, mbiri, bolodi ndi pepala extrusion. Sankhani kufanana kwa granulation, kuphatikizika, masterbatch ndi kudzaza kwapamwamba kwambiri kapena kufalikira kwa ulusi wagalasi, komwe kusakanikirana kosinthika kumafunika kwambiri.

Kodi mbiya ya parallel screw mbiya imagwiritsidwa ntchito chiyani?

Makamaka granulation ndi pelletizing, compounding ndi masterbatch, PS thovu, aluminiyamu-pulasitiki gulu gulu, mphira ndi pulasitiki, ndi ofanana masanjidwe PVC mizere. Mbiri ya tunable screw imalola makina amodzi kugwira maphikidwe ambiri.

Kodi mbiya yofananira iyenera kukhala nitrided kapena bimetallic?

Zosakaniza zoyera zimatha kuyenda ndi nitrided. Maphikidwe abrasive - high mineral filler, glass fiber, high carbonate - ayenera kukhala bimetallic; aloyi wowonjezera wa tungsten wofika ku 62 HRC amakana kuti abrasion atalikirapo kuposa kanyumba kakang'ono ka nitrided.

Kodi parallel twin screw extruder ndi chiyani?

Ndi makina omwe amakhala ndi zomangira ziwiri zofananira ndi mbiya, zomwe zimazungulira pozungulira ndikuphatikizana. Mitsuko ndi phula ndi mtima wovala wa makinawo ndipo zimagwirizana ndi extruder ndi Chinsinsi.

Kodi ndingaytanitse bwanji mbiya yamapasa yamapasa yoyenerera?

Tiuzeni kusinthasintha kapena kusinthasintha, zinthu zanu ndi zotsatira zake, momwe maphikidwewa amakhudzira, komanso mtundu/chitsanzo chanu cha extruder kapena chojambula. Ndi izi, timafotokozera magawo, mawonekedwe a screw ndi chithandizo chapamwamba ndikutchulapo mkati mwa maola 12.

Zogwirizana ndi fakitale yathu

Aluminum-Plastic Plate Parallel Twin Screw

Aluminium-Pulasitiki Plate Parallel Twin Screw

Mpira Ndi Pulasitiki Parallel Twin screw

PS Foaming Parallel Twin-Screw

PVC Pipe Parallel Screw Barrel

Parallel Twin Screw Pelletizing Line

Twin Screw Extruder

Pezani parallel twin screw barrel yofanana ndi maphikidwe anu

Tiuzeni co-kapena potsimikizira kasinthasintha, zinthu zanu ndi zotuluka, ndi chitsanzo chanu extruder - mainjiniya athu afotokoza zigawo, wononga mbiri ndi mankhwala pamwamba. Pazinthu zowononga, migolo yathu ya tungsten-added bimetallic imafika 62 HRC mkati mwa bore kwa moyo wautali.

Pezani mtengo mkati mwa maola 12 →

Makina Apulasitiki a Nanhaiya (Zhoushan) · Makasitomala 500+ padziko lonse lapansikufanana, conical & wosakwatiwambiya zomangira &makina extruder