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, Momo & Tono

2026-08-13 0 Waiho he karere ki ahau

Na teTe Kapa Hangarau Nanhaiya— Screw & Barrel Engineering, Zhoushan · I arotakehia mo te tika o te wheketere · ~9 min panui

Whakautu tere

E rua nga wiri tuhonohono o te diameter o nga wa katoa e rere taha ana i roto i tetahi oko mahanga e rite ana. Kaore i rite ki te oko koeko, ka noho rite tonu te rahi o nga wiri ki te pito ki te pito, a ko te nuinga o te waa ka hangaia mai i nga waahanga. Ko nga hurihanga whakarara huri tahi e tika ana ki te whakahuihui, ki te kirikiri me te masterbatch; ko nga hurihanga whakarara huri-a-te-a-te-a-te-a-te-a-te-a-te-a-te-a-te-a-papa ki te PVC me te mahi whakakii-nui.

Ko tewhakarara twin screw barrelKo te mahi o te whakahuihui me te pelletizing - ki nga waahi katoa e hiahia ana koe ki te whakaranu kaha, te whakahaere i te pāmahana tika me te ngawari ki te whirihora ano i te wiri mo te hanga hou. Ina hangaia he oko koeko mo te tangohanga PVC tika, ka hangaia he oko whakarara mo te whai kiko. Ko tenei aratohu e whakamarama ana me pehea te mahi, te rereketanga nui i waenga i nga hoahoa hurihuri me te huri-a-te-huri, te waahanga (hanga-paraka) hangahanga kia ngawari, me pehea te whiriwhiri i te mea tika mo to rauemi.

Parallel twin screw barrel (counter-rotating) manufactured by Nanhaiya — He tīwiri māhanga whakarara me te oko - tīwiri pūmau-diameter i roto i te oko mahanga-whare ōrite.

He aha te paera wiri mahanga whakarara?

Ka mau i te paera whakarara e rua nga wiri he rite te diameter mai i te whangai ki te tukunga, e rere ana i roto i te ahua-waru mahanga rua. Na te mea he rite tonu te diameter, ka whakatauhia te whanonga tukatuka e te huriwhirihorangakaua ma te taper — ka huri koe i te mahi ma te huri i nga huānga wiri, kaua ko te ahua o te oko. Koia te take e kaha ana te whakarara o nga mahanga mahanga me nga punaha oko ki te whakakotahitanga: ka taea e te miihini kotahi te whakahaere i nga tohutao rerekee ma te hanga ano i te wiri.

E rua nga mea e whakamarama ana i te paera mahanga mahanga whakarara: ko te ahunga ka huri nga wiri (te huri tahi, te huri-a-te-huri ranei), me te hanga o te oko me te wiri (i te nuinga o te waa mai i nga waahanga). Ko nga mea e rua kua hipokina ki raro. Mo nga miihini o raro, tirohia to maatau whakamaramame pehea te mahi o te wiri mahanga whakarara.

Te huri tahi me te huri-a-tete

Koinei te rereketanga nui i roto i te whanau whakarara. Ko enei mea e rua he hoahoa mahanga mahanga, engari he rereke te kawe me te whakakotahi.

Tauwehe	Whakarara tahi	Whakarara takai-hurihuri
Te hurihanga huri	He rite tonu te huri o nga pihi e rua	Ka huri nga tira ki nga huarahi rereke
Whakaranu	Te kutikuti teitei, te ranu tohatoha me te marara	He ngawari, he rite ki te maramataka, he pai te kawe
tere angamaheni	He teitei ake te tere o te wiri, te putanga teitei	He iti ake te tere, he kaha te hanga pehanga
Te mea pai mo	Whakahuihui, masterbatch, granulation, whakakī/karaihe-muka	PVC paipa/kōtaha, wera-tairongo, teitei-whakakī PVC
Ka rongo	Ka taea te whirihora "miihini whakaranu"	He rite ki te papu, he "miihini tango" ngawari

Hei poto: ko te mahanga hurihuri tahi te taputapu mo te ranu me te marara; ko te wiri mahanga hurihuri te taputapu mo te kawe PVC ngawari. He maha nga tipu kei a raatau nga mea e rua. Mena ko to mahi he huri i nga kai hei pire, ka hiahia koe ki te huri tahi; Mena kei te huri i te PVC whakamaroke-whakaranu ki te paipa, ki te tohu ranei, he pai ake te huri-a-te-huri (he oko koeko ranei) te pai ake.

Segmented parallel twin screw elements on a shaft

Waahanga (hanga-paraka) hoahoa oko

Ko te nuinga o nga punaha whakarara he mea whakaraerae: he mea hanga te oko ki nga waahanga raka-tahi me te wiri o nga huānga ki te miro ki runga i te rakau. Ko tenei huarahi "poraka-hanga" te mea e pai ai te whakaraerae o te paera tira mahanga - ka taea e koe te whakanoho he waahanga whangai, he maha nga waahanga whakaranu, he hau me tetahi waahanga ine i te waahi e hiahiatia ana e te tunu, me te huri takitahi i nga huānga kua mau, kaore ranei e tika ana hei whakakapi i te hurihanga katoa.

Nga painga mahi:

Ka taea te whirihora— hanga ano i te tohu wiri mo te hanga hou kaore he miihini hou.
Ko nga waahanga kakahu kua whakaritea— whakakapihia anake te wahanga kua mau, kaua ko te wiri me te oko katoa.
Te tuku i nga waahi e hiahia ana koe- Whakanohohia nga waahanga hau mo te makuku me te tango i te makuku.
Whakaranuhia te kaha i runga i te hiahia— te tapiri, te tango ranei i nga paraka pokepoke hei whakatangi i te kutikuti.

Parallel vs koeko mahanga oko tīwiri

He maha nga wa ka paunatia e nga kaihoko he whakarara ki akoeko mahanga oko tīwiri. Ko te ture poto: he koeko mo te tangohanga PVC tika, he whakarara mo te whakahuihui me te tono whakauru.

Tauwehe	Parallel twin screw barrel	Koeko mahanga kaka huriwiri
Te hanga tiu	Te diameter tonu, kua wehea	He tapered, he whanui te kai ki te mate kuiti
Te kaha	Te whakaranu, te marara, te ngawari	Te kai teitei me te kōpeketanga i te roa poto
Te mea pai mo	Te whakahiato, te masterbatch, te whakahuihui, nga pire WPC	PVC paipa, kōtaha, papa, pepa
Te whakahaere whakakī	He pai ki te whakakī teitei / muka-karaihe	Pai; rangi ki te maimoatanga mata
Te ngawari	Kōtaha tīwiri ka taea te whirihora anō	Te āhuahanga pūmau mō ia rahi

Nga tono

Na te mea ka taea te whakakorikori ki te mahi, ka hipokina te maha o nga momo mahi ma te oko mahanga whakarara. Ko nga whirihoranga noa i Nanhaiya ko:

Te whakakao me te pelletizing— te mahi whakarara matarohia; kite tatouwhakarara mahanga tira pelletizing raina.
Whakahuihui me te roopu matua— te whakamarara i nga poaka, nga taapiri me nga whakakii ki roto i te kapia kawe.
PS pahuka ana— tirohia tePS pahuka i te tīwiri māhanga whakarara.
Paewhiri hiato konumohe-kirihou— tirohia tekonumohe-kirihou paraharaha whakarara mahanga tīwiri.
He rapa me te kirihou— tirohia terapa me te kirihou whakarara wiri mahanga.
Pupa PVC (whakarara)— mo nga raina e rere whakarara ana kaua ki te tahora koeko:PVC paipa whakarara oko tīwiri.

Parallel twin screw pelletizing line for compounding and granulation — He raina pelletizing tīwiri māhanga whakarara — te kainga tino noa mo te oko whakarara hurihuri tahi.

PS foaming parallel twin screw and barrel — He tira mahanga whakarara me te oko i hangaia mo te hukahuka PS.

Te maimoatanga o te papanga me te mata

He mahi whakaraerae te whakahuihui — te muka karaihe, te whakakii kohuke me nga uta warowaikawa teitei ka mau i nga tira me nga oko tere — no reira he mea nui te maimoatanga o te papanga me te mata ki runga i te punaha whakarara pera i runga i te koeko. Ka hangaia e Nanhaiya nga tira whakarara me nga paera mai i te rino nitrided 38CrMoAlA, W6Mo5Cr4V2, HIP paura rino ranei, me nga papanga nitrided, bimetallic, tungsten-carbide ranei kia rite ki te abrasion o to tunu.

Mo nga puhui kua whakakiia ki te karaehe ranei, ko te mata bimetallic te whiriwhiri tika: ka tae to tatou koranu tungsten-taapiri62 HRCi roto i te poka — me te 58 HRC noa — mo te roa o te mahi. Ka mau nga paera whakarara ki te ±0.01 mm. Mena kei te pauna koe i nga whiringa mata, tirohia to maatau aratohupaera tīwiri bimetallic, e pa ana ki nga punaha whakarara.

Me pehea te kowhiri i te peera mahanga whakarara tika

E wha nga patai ka tae atu koe ki te whakatakotoranga tika:

Te huri-a-te-a-te-a-te-huri ranei?Te whakahuihui me te pelletizing → te hurihuri tahi; Ko te PVC me te ngawari te kawe → te huri-tahuri.
He aha koe e tukatuka ana?Ko te tohutaka te whakatakoto i te kotaha wiri - te ranu poraka mo te marara, nga hau mo te putu.
He pehea te abrasive?Te whakakii teitei, te muka karaihe → bimetallic / tungsten-carbide mata.
He aha te miihini?Tukuna mai to waitohu / tauira, he tuhi ranei kia rite nga waahanga me te rakau.

He pai te ritenga ki te miihini me te tohutaka nga hiu whakarara me nga paera, no reira ma te tuhi, tauira ranei me to rawa me to putanga ka taea e matou te kii i te tino tika.takakau, parallel or conical screw barrel — or the completemihini extruder— i roto i nga haora 12.

Pātai auau

He aha te paera wiri mahanga whakarara?

He oko mahanga e mau ana e rua nga wiri wawaotanga-diamita e rere taha ana. Kaore i rite ki te paera koeko, ka noho rite tonu te rahi o nga wiri ki te pito ki te pito, ka wehea te punaha, na reira ka taea te whirihora ano i te tohu wiri mo nga momo hangahanga.

He aha te rereketanga i waenga i te hurihuri tahi me te huri-tautoko?

He rite tonu te huri o nga tiwiri hurihuri me te whakakotahi i te kutikuti teitei i te tere tere — he pai mo te whakahuihui me te roopu matua. Ka huri whakatewhatewha nga hurihanga porotiti ki te kawe ngawari, penei i te papu - pai ake mo te PVC me te wera-tairongo, te mahi whakakii teitei.

He aha te wahanga (paraka-hanga) parallel mahanga mahanga oko?

He hoahoa hangai kei reira te oko e hono tahi ana nga waahanga me te tiwiri he huānga ki runga i te rakau. Ka taea e koe te whakanoho i nga waahanga kai, te ranu, te hau me te inenga i runga i te hiahia o te tunu kai, ka whakakapi i te waahanga kua mau hei whakakapi i te wiri katoa.

Parallel, conical twin screw barrel — ko tehea te hiahia?

Kōwhiri koekoe mō te putorino PVC tika, kōtaha, papa me te tango pepa. Whiriwhiria te whakarara mo te whakaraerae, te whakahiato, te masterbatch me te tino whakakii, te marara muka karaihe ranei, he mea tino nui te whakakotahitanga whakahou.

He aha te whakamahi i te paera tira mahanga whakarara?

Ko te nuinga o te granulation me te pelletizing, te whakahuihui me te masterbatch, te hukahuka PS, te panui hiato konumohe-kirihou, te rapa me te kirihou, me nga raina PVC whakarara. Ko te kōtaha tīwiri karekau ka taea e te miihini kotahi te hapai i nga tohutao maha.

Me whakanitarihia, kia bimetallic ranei tetahi oko whakarara?

Ka taea te rere nitrided pūhui pokekore. Ko nga tohutao abrasive - te whakakii kohuke teitei, te muka karaihe, te waro waro nui - me bimetallic; he koranu tungsten-taapiri ka eke ki te 62 HRC ka whakahē i taua abrasion he roa ake i te pouaka nitrided angiangi.

He aha te extruder wiri mahanga whakarara?

Ko te mihini e mau ana i te wiri mahanga whakarara me te oko, ka huri tahi mo te whakahuihui me te pelletizing. Ko te oko me te wiriwiri te ngakau mau o te miihini, ka rite ki te extruder me te tunu.

Me pehea taku ota i te paera tira mahanga whakarara tika?

Korerohia mai ki a maatau te huri-a-te-huri-a-te-huri ranei, to rawa me te whakaputanga, te ahua o te tunu kai, me to waitohu/tauira extruder, he tuhi ranei. Ma enei, ka tohua e matou nga waahanga, te tohu tohu me te maimoatanga mata me te whakahua i roto i nga haora 12.

Ko nga hua e pa ana mai i to maatau wheketere

Aluminum-Plastic Plate Parallel Twin Screw

Konumohe-kirihou Pereti Whakarara Wiu Mahanga

Ruapa me te Kirihou Mahanga Whakarara

PS Foaming Parallel Twin-Screw

Pupa Pipa Whakarara PVC Paera

Raina Pelletizing Tiu Mahanga Whakarara

Mahanga Tiu Extruder

Tikina he paera tira mahanga whakarara e rite ana ki to tunu

Korerohia mai ki a maatau te huri-a-te-hurihuri ranei, to rawa me to putanga, me to tauira extruder - ma o maatau miihini e tohu nga waahanga, te tohu wiri me te maimoatanga mata. Mo nga pūhui abrasive, ka tae atu a matou oko bimetallic tungsten-taapirihia ki te 62 HRC i roto i te rua mo te roa o te mahi.

Tikina he korero i roto i nga haora 12 →

Nanhaiya (Zhoushan) Miihini Kirihou · 500+ kiritaki o te ao ·whakarara, koekoe & takakauoko tīwiri &mihini extruder