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-inotenderera vs Counter-inotenderera, Mhando & maapplication

2026-08-13 0 Ndisiire meseji

By theNanhaiya Technical Team— Screw & Barrel Engineering, Zhoushan · Ongororo yehuchokwadi hwefekitori · ~9 min verenga

Kurumidza mhinduro

A parallel twin screw barrel ine masiruuru maviri anopindirana edhayamita anoramba achimhanya ari padivi nepadivi mudhiramu rinofananidzwa nemapatya. Kusiyana neconical barrel, screws anogara akaenzana saizi kumagumo kusvika kumagumo, uye dhiramu rinowanzo kuvakwa kubva muzvikamu. Co-inotenderera parallel screws sutu inosanganisa, granulation uye masterbatch; counter-inotenderera parallel screws suit PVC uye yakakwirira-yekuzadza basa.

Theparallel twin screw barrelndiro bhiza rekugadzira uye pelletizing - kwese kwaunoda kusanganisa kwakasimba, kunyatso kudzora tembiricha uye kuchinjika kwekugadzirisa zvakare sikuruu yekugadzira kutsva. Iko kune conical barrel yakavakirwa yakananga PVC extrusion, parallel screw barrel inovakwa kuitira kuita zvakasiyana. Gwaro iri rinotsanangura kuti rinoshanda sei, mutsauko wakakosha pakati pekutenderedza-kutenderedza uye kupokana-kutenderedza madhizaini, chikamu (chivakwa-chivharo) chimiro chinoita kuti chichinjike, uye masarudzire akakodzera ezvinyorwa zvako.

Parallel twin screw barrel (counter-rotating) manufactured by Nanhaiya — A parallel twin screw and barrel — masiruuru anogara-dhayamita mudhiramu rinoenderana nemapatya.

Chii chinonzi parallel twin screw barrel?

Parallel screw barrel inobata masiruuru maviri ehupamhi hwakafanana kubva kufeed kusvika pakubuda, ichimhanya mumufananidzo-sere mapatya. Nekuti iyo dhayamita inogara iripo, maitiro ekugadzirisa anoiswa ne screwconfigurationkwete ne taper - iwe unoshandura mashandiro nekushandura screw zvinhu, kwete chimiro chedhiramu. Ndokusaka parallel twin screw uye mbiya masisitimu achitonga kusanganisa: muchina mumwe chete unogona kumhanya zvakasiyana mabikirwo nekuvaka zvakare screw.

Zvinhu zviviri zvinotsanangura parallel twin screw barrel: kwainotenderera screws (kutenderera-kutenderedza kana kupotera-kutenderedza), uye kuti dhiramu uye screw zvinovakwa sei (kazhinji kubva muzvikamu). Ose ari maviri akafukidzwa pasi apa. Kune ari pasi mechanics, ona mutsananguri wedu pakuti parallel twin screw inoshanda sei.

Kubatana-kutenderedza vs kupokana-kutenderedza

Uyu ndiwo musiyano unonyanya kukosha mumhuri yakafanana. Ose ari maviri ari intermeshing mapatya-screw madhizaini, asi anoburitsa uye anosanganisa zvakasiyana.

Factor	Co-inotenderera parallel	Counter-inotenderera parallel
Screw rotation	Iwo maviri screws anotendeuka nenzira imwechete	Zvikururu zvinocheuka zvakapesana
Kusanganisa	High-shear, yakanakisa kugovera & dispersive musanganiswa	Zvinyoro, senge-calender, zvakanaka kutumira
Typical speed	Higher screw speed, yakakwirira kubuda	Lower speed, steady pressure build
Zvakanakisa zve	Kubatanidza, masterbatch, granulation, yakazadzwa/girazi-fibre	PVC pombi/profile, kupisa-sensitive, high-filler PVC
Inzwa	Reconfigurable "mixing machine"	Pombi-yakafanana, yakapfava "extrusion muchina"

Muchidimbu: a co-rotating twin screw ndicho chishandiso chekusanganisa nekuparadzira; a counter-inotenderedza twin screw ndicho chishandiso chekufambisa, chakatsiga PVC kufambisa. Zvirimwa zvizhinji ndezvazvo zvose. Kana basa rako riri kushandura zvinongedzo kuita pellets, iwe unoda kubatana-kutenderera; kana iri kushandura PVC yakaoma-musanganiswa kuita pombi kana chimiro, counter-inotenderera (kana conical barrel) ndiyo inokwana zvirinani.

Segmented parallel twin screw elements on a shaft

Chikamu (chivakwa-chivharo) dhizaini dhizaini

Mazhinji masisitimu anoenderana ari modular: dhiramu rakagadzirwa nezvikamu zvebhaudhi-pamwe chete uye screw yezvinhu zvakakosha zvakasungirirwa pashaft. Iyi nzira ye "building-block" ndiyo inopa parallel twin screw barrel kuchinjika kwayo - unogona kuisa chikamu chekudya, akati wandei kusanganisa zvikamu, vent uye metering chikamu chaipo painoda iyo resipi, uye chinjana yakasakara kana isina kukodzera zvinhu zvega pane kutsiva iyo screw yese.

Izvo zvinobatsira:

Reconfigurable-vakazve screw profile yekugadzira nyowani isina muchina mutsva.
Zvipfeko zvakanangwa- tsiva chete chikamu chakasakara, kwete iyo screw yese uye mbiya.
Kupinza mhepo paunoda- misa zvikamu zvemhepo yekunyorova uye kubviswa kwakashata.
Sanganisa kusimba pakuda- wedzera kana kubvisa mabhuroko ekukanyira kushear.

Parallel vs conical twin screw barrel

Vatengi kazhinji vanoyera kuenzanirana neaconical twin screw barrel. Murau mupfupi: conical kune yakananga PVC extrusion, inofananidzwa yekubatanidza uye inoda kusanganisa.

Factor	Parallel twin screw barrel	Conical twin screw barrel
Screw shape	Constant dhayamita, segmented	Tapered, wide feed to narrow kufa
Simba	Kusanganisa, kupararira, kushanduka	High feed & compression muhurefu hupfupi
Zvakanakisa zve	Granulation, masterbatch, kusanganisa, WPC pellets	PVC pombi, mbiri, bhodhi, pepa
Filler kubata	Yakanakisa pakakwirira kwazvo filler / girazi-fiber	Kugona; tune nekurapwa kwepamusoro
Kuchinja-chinja	Reconfigurable screw profile	Yakagadziriswa geometry pahukuru

Applications

Nekuti screw profile inogona kutariswa kubasa, parallel twin screw barrel inovhara rakasiyana basa. Zvirongwa zvakajairika paNanhaiya zvinosanganisira:

Granulation & pelletizing- the classic parallel job; ona yeduparallel twin screw pelletizing line.
Compounding & masterbatch- kuparadzira pigment, additives uye mafirita mukutakura resin.
PS kupupa- onaPS furo parallel twin screw.
Aluminium-plastic composite panel- onaaluminium-plastic plate parallel twin screw.
Rubber & plastiki- onarabha uye epurasitiki parallel twin screw.
PVC pombi (yakafanana)- yemitsara inofanana pane kurongeka kweconical:PVC pombi parallel screw barrel.

Parallel twin screw pelletizing line for compounding and granulation — A parallel twin screw pelletizing line - imba inonyanyozivikanwa kune inotenderera inotenderedza dhiramu.

PS foaming parallel twin screw and barrel — A parallel twin screw uye dhiramu yakavakirwa PS kupupa furo.

Material uye pamusoro kurapwa

Kubatanidza ibasa rinoshungurudza - girazi fibre, mamineral fillers uye yakakwira carbonate loadings inopfeka screws nemadhiramu nekukurumidza - saka zvinhu uye pamusoro pekurapa zvine basa zvakanyanya paparallel system sepaiyo conical. Nanhaiya inogadzira masiruu anoenderana nemadhiramu kubva ku38CrMoAlA nitrided simbi, W6Mo5Cr4V2 kana HIP poda simbi, ine nitrided, bimetallic kana tungsten-carbide nzvimbo kuti ienderane nekupwanya kweresipi yako.

Kune yakazadzwa zvakanyanya kana girazi-yakasimbiswa makomisheni, bimetallic pamusoro ndiyo sarudzo ine musoro: yedu tungsten-yakawedzera alloy inosvika.62 HRCmukati mebore — maringe ne58 HRC — kwehupenyu hurefu hwesevhisi. Parallel mbiya dzakabatwa kune kushivirira kwe ± 0.01 mm. Kana iwe uri kuyera pamusoro pesarudzo, ona gwara redu kunebimetallic screw barrels, iyo inoshanda zvakaenzana kune parallel systems.

Maitiro ekusarudza yakakodzera parallel twin screw barrel

Mibvunzo mina inokuendesa kune chaiyo yakatarwa:

Co- kana counter-inotenderera?Kubatanidza uye kupeta → kutenderedza pamwe; PVC uye kuburitsa zvinyoro → kupokana-kutenderera.
Uri kugadzira chii?Iyo resipi inoseta iyo screw profile - kusanganisa mabhuroki ekuparadzira, mavhavha ekuputsika.
Inotyisa sei?High filler kana girazi faibha → bimetallic / tungsten-carbide pamusoro.
Mushini upi?Tumira yako extruder brand / modhi kana dhirowa kuti zvikamu uye shaft zvienderane chaizvo.

Parallel screws uye mbiya zvine hunhu kumuchina uye resipi, saka dhirowa kana sampuli pamwe nezvinhu zvako uye zvinobuda zvinoita kuti titore iyo chaiyo-inokodzera.single, parallel kana conical screw barrel - kana yakakwanaextruder muchina- mumaawa gumi nemaviri.

Mibvunzo inowanzo bvunzwa

Chii chinonzi parallel twin screw barrel?

Idhiramu rine mapatya rakabata maviri anogara-dhayamita intermeshing screws anomhanya padivi nepadivi. Kusiyana neconical barrel, ma screws anogara akaenzana saizi kumagumo kusvika kumagumo uye sisitimu inowanzoiswa zvikamu, saka iyo screw profile inogona kugadziridzwa zvakare kune akasiyana mafomati.

Ndeupi musiyano uripo pakati pekupoterera-kutenderedza uye kutenderedza?

Co-inotenderedza screws inotendeuka nenzira imwechete uye inopa yakakwirira-kugera kusanganisa nekumhanya kwakanyanya - kwakanakira kusanganisa uye masterbatch. Masiruuru anotenderedza anotenderedza akapfava, ane pombi-sekufambiswa - zvirinani kuPVC uye inonzwa kupisa, basa rekuzadza zvakanyanya.

Chii chinonzi segment (building-block) parallel twin screw barrel?

Iyo modular dhizaini uko dhiramu iri bhaudhi-pamwe chete zvikamu uye screw ndeye kiyi zvinhu pane shaft. Iwe unogona kuisa chikafu, kusanganisa, vent uye metering zvikamu sezvinodiwa resipi, uye kutsiva chete chikamu chakasakara pachinzvimbo chese screw.

Parallel kana conical twin screw barrel - chii chandinoda?

Sarudza conical kune yakananga PVC pombi, mbiri, bhodhi uye pepa extrusion. Sarudza kufambirana kwegranulation, kusanganisa, masterbatch uye yakanyanya-yekuzadza kana girazi-fibre dispersion, uko kunogadziriswa kusanganisa kunonyanya kukosha.

Chii chinonzi parallel twin screw barrel inoshandiswa?

Kunyanya granulation uye pelletizing, kusanganisa uye masterbatch, PS foaming, aruminiyamu-plastiki composite panel, rabha uye epurasitiki, uye parallel-layout PVC mitsetse. Iyo tunable screw profile inobvumira muchina mumwe kubata akawanda mabikirwo.

Ko dhiramu rakafanana rinofanira kunge riri nitrided kana bimetallic?

Mishonga yakachena inogona kumhanya nitrided. Abrasive recipes - high mineral filler, glass fiber, high carbonate - inofanira kuva bimetallic; tungsten-yakawedzerwa alloy inosvika 62 HRC inoramba iyo abrasion kureba kupfuura iyo nhete yenitrided kesi.

Chii chinonzi parallel twin screw extruder?

Ndiwo muchina unogara parallel twin screw uye mbiya, kazhinji inotenderedza kusanganisa uye pelletizing. Iyo dhiramu uye screw ndiyo yakapera mwoyo yemuchina uye inofananidzwa neextruder uye resipi.

Ini ndinoodha sei iyo chaiyo parallel twin screw barrel?

Tiudze co- kana kupokana-kutenderedza, zvinhu zvako uye zvinobuda, kuti resipi yacho inotyisa sei, uye yako extruder brand/modhi kana dhirowa. Neavo, isu tinotsanangura zvikamu, screw profile uye kurapwa kwepamusoro uye quote mukati meawa gumi nemaviri.

Zvigadzirwa zvinoenderana kubva kufekitari yedu

Aluminum-Plastic Plate Parallel Twin Screw

Aluminium-Plastiki Plate Parallel Twin Screw

Rubber And Plastic Parallel Twin Screw

PS Foaming Parallel Twin-Screw

PVC Pipe Parallel Screw Barrel

Parallel Twin Screw Pelletizing Line

Twin Screw Extruder

Tora parallel twin screw barrel inoenderana neresipi yako

Tiudze co- kana counter-kutenderera, zvinhu zvako uye zvinobuda, uye yako extruder modhi - mainjiniya edu anotsanangura zvikamu, screw profile uye pamusoro pekurapa. Kumakomisheni abrasive, tungsten-added bimetallic barrels edu anosvika 62 HRC mukati mebore kwehupenyu hurefu hwesevhisi.

Wana mutengo mukati maawa gumi nemaviri →

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