What is a conical twin screw barrel?

It is a tapered twin-bore extrusion component in which two conical screws rotate inside a matching conical barrel. The taper compresses and plasticizes material over a short length, making the conical screw barrel ideal for PVC pipe, profile, sheet and WPC extrusion.

What materials is it best used for?

Rigid PVC (pipe, profile, board and sheet), wood-plastic composite, PE-based profiles and resin tile, plus PVC pelletizing. It handles low-bulk-density dry-blend powders especially well thanks to its large feed-end intake.

How is it different from a parallel twin screw barrel?

A conical barrel tapers and builds high compression with gentle shear, suiting direct PVC/WPC extrusion. A parallel twin screw barrel keeps a constant diameter and higher shear, which suits compounding, masterbatch and very high-filler formulations.

What is the typical clearance between screw and barrel?

Clearance is the small gap between the flight tip and the bore wall. It is set tight and accurate on a new part; as it opens up from wear, output and pressure drop. Measuring it periodically is the clearest way to track barrel wear.

How do I install a conical twin screw barrel?

Power down and lock out, clean the mating faces, mount and align so the screws turn freely, wire each heater zone and thermocouple correctly, then bring the barrel up to temperature slowly and soak it before starting the screws.

What causes wear in conical twin screw barrels?

Mainly abrasive fillers such as calcium carbonate, wood fiber and glass, made worse by corrosion from PVC processing, poor maintenance and under-specified hardness. A deeper bimetallic or tungsten-carbide layer resists all three far better.

How often should the barrel be inspected or replaced?

Do visual and purge checks monthly and measure clearance quarterly. Replacement timing depends on filler load and run hours — track the wear trend rather than waiting for a failure, and rebuild or replace once clearance moves past spec.

How do I choose the right size for my extrusion line?

Match the diameter ratio and length to your extruder model and target output, then pick a surface treatment based on how abrasive your formulation is. Send a drawing or a sample with key dimensions so the barrel is an exact fit, not an approximation.

Conical Twin Screw Barrel: Kalozera Wathunthu wa Zolemba, Mapulogalamu & Kusankha

2026-08-05 0 Ndisiyireni uthenga

NdiNanhaiya Technical Team- Screw & Barrel Engineering, Zhoushan · Yawunikiridwa kuti iwonetsetse kulondola kwafakitale · ~ 10 min werengani

Yankho lofulumira

Chipilala chopindika ndi mbiya yopindika, yokhala ndi mapasa momwe zomangira ziwiri zozungulira zimazungulira mkati mwa mbiya yofananira. The tapered geometry amapereka chakudya amphamvu ndi psinjika mkulu mu utali wautali, ndichifukwa chake ndimapasa a conical screw ndi mbiyandiye muyezo kusankha PVC chitoliro, mbiri, pepala ndi WPC extrusion.

Ngati mumagwiritsa ntchito PVC kapena pulasitiki yamatabwa, ndiyemapasa a conical screw mbiyandi imodzi mwamagawo omwe amasankha mwachindunji zomwe mwatulutsa, kusungunula mtundu ndi mtengo wake. Sankhani kukula kolakwika, zinthu kapena chilolezo ndipo mumalipira pazovala, zotsalira komanso nthawi yopuma. Bukuli likufotokoza momwe conical screw barrel imagwirira ntchito, zomwe zimafunikira mukagula, momwe zimasiyanirana ndimapasa ofanana screw mbiya, ndi momwe mungasankhire, kukhazikitsa ndi kukonza imodzi - zolembedwa kuchokera ku fakitale yomwe imasindikiza zigawozi tsiku lililonse.

Conical twin screw barrel manufactured by Nanhaiya — Zomangira zowongoka zamapasa ndi mbiya - zibowolo zopindika zimapatsa kukanikizana kwautali kwanthawi yayitali kwa PVC yosamva kutentha.

Momwe conical twin screw mbiya imagwirira ntchito

Mu amapasa a conical screw extruder, zomangira ziwiri zimakhala mbali ndi mbali pang'ono pang'ono, zotambasula kumapeto kwa chakudya ndi zopapatiza pamapeto pake. Mgolowo umakhala wocheperako kuti ufanane. Pamene zopangira zimayenda kuchokera kudera lalikulu lazakudya kupita kumalo ang'onoang'ono a mita imodzi, kuchuluka kwachulukidwe kumakakamira ndikuyika pulasitiki pomwe ndege zodutsamo zimatumiza ndikusakanikirana. Chifukwa zomangira ziwirizi zimazungulira mozungulira komanso zolumikizana bwino, zomangira ziwirizi ndi mbiya zimakhala ngati mpope wosuntha wabwino - kutulutsa kosasunthika pakumeta kocheperako, komwe kumateteza ma polima osamva kutentha monga PVC.

Ndondomekoyi imagawidwa m'magawo atatu:

Kudyetsa & kutumiza- kukula kwakukulu kwa chakudya kumapereka kuchuluka kwa madyedwe, kotero kusakanikirana kwa ufa ndi zinthu zotsika kwambiri (monga PVC dry-blend) zimakokedwa modalirika popanda kutsekereza.
Compression & plasticizing- tepiyo imachepetsa voliyumu ya njira m'litali, kugwirizanitsa zinthu, kutulutsa mpweya ndikuwusungunula kupyolera mu kutentha ndi ntchito zamakina.
Kuyeza & kutulutsa- yopapatiza metering zone amamanga khola kuthamanga ndi kukankhira yunifolomu, homogeneous kusungunula kudzera kufa pa mlingo ankalamulira.

Mgolo umachita zambiri kuposa kungoyika zomangira. Imanyamula chotenthetsera ndi madera ozizira omwe amasunga gawo lililonse pa kutentha koyenera. Migolo ya Nanhaiya imagwiritsa ntchito kutenthetsa ndi kuziziritsa kwamitundu yambiri - nthawi zambiri imadyetsa, kuponderezana ndi malo opangira ma homogenization - yokhala ndi mpweya wabwino wotulutsa mpweya kuti utulutse chinyontho ndi kusungunuka, zomwe zimafunikira pakudzaza ndi hygroscopic mankhwala.

Zofunikira zazikulu zomwe muyenera kuziwona musanagule

Migolo iwiri ya conical imatha kuwoneka yofanana ndikuchita mosiyana kwambiri. Izi ndizomwe zimasankha zoyenera, zotuluka komanso moyo wovala - manambala omwe muyenera kutsimikizira pamawu aliwonse.

Spec chinthu	Zomwe zikutanthauza	Chifukwa chiyani zili zofunika
Chiŵerengero cha diameter	Mapeto-mapeto / m'mimba mwake, mwachitsanzo. 45/90, 50/105, 55/110, 65/132, 80/156, 92/188 mm	Imakhazikitsa gulu la makina ndi gulu lotulutsa - liyenera kufanana ndi mtundu wanu wa extruder ndendende
Chiwerengero cha L/D	Utali wokwanira wokonzekera motsutsana ndi m'mimba mwake	Kutalika kothandiza kwambiri = nthawi yochulukirapo yokhalamo kuti muphatikizidwe kwathunthu ndikuchotsa gasi
Gawo lazinthu	38CrMoAlA nitrided zitsulo, W6Mo5Cr4V2, HIP ufa zitsulo, kapena bimetallic	Imayendetsa mwachindunji kuvala moyo ndi kukana dzimbiri motsutsana ndi zodzaza / PVC
Chithandizo chapamwamba & kuuma	Nitriding, chrome plating, bimetallic alloy kapena tungsten-carbide spray	Nanhaiya amapopera ndi tungsten-added alloy layer kuti afike62 HRCmkati mwa mbiya motsutsana ndi 58 HRC wamba
Aloyi wosanjikiza kuya	Makulidwe a wosanjikiza wamkati wosamva kuvala	Bimetallic layer ya Nanhaiya ndi 2.5–3 mm — kuzama kumatanthauza zenera lalitali lotha kugwiritsidwa ntchito
Screw / mbiya chilolezo	Kusiyana pakati pa nsonga ya ndege ndi khoma lobowola	Chachikulu kwambiri = kutaya mphamvu ndi kutulutsa kochepa; kusiyana kolimba, kolondola kumapangitsa kuti magwiridwe antchito akhale apamwamba
Kulekerera / kuwongoka	Machining mwatsatanetsatane mbali yomalizidwa	Nanhaiya ali ndi migolo yamapasa awiri mpaka ±0.0005 mm kuti ikhale yokwanira, yokwanira
Mphamvu zotulutsa (kg/h)	Zovoteledwa ndi kukula kwake	Nambala yamtengo wapatali yogula - ifananize ndi liwiro la mzere wanu ndi malonda

Zambiri zamakampani:kukula kwa conical monga 45/90 kapena 65/132 (chakudya / kufa m'mimba mwake mu mm) ndizofala pamakina amtundu wa SJZ, kotero mbiya yotchulidwa motere nthawi zambiri imatha kufananizidwa ndi chotulukapo chomwe chilipo. Nthawi zonse tsimikizirani motsutsana ndi zojambula kapena zitsanzo musanayitanitsa. Mutha kuwona milingo yokhazikika patsamba lathumapasa a conical screw mbiyatsamba.

Conical vs kufanana twin screw mbiya

Funso lofala kwambiri lomwe ogula amafunsa ndilakuti amafunikira conical kapena amapasa ofanana screw mbiya. Onse awiri ndi mapasa, onse intermesh - koma geometry imagwirizana ndi ntchito zosiyanasiyana. Mwachidule: conical akupambana pa mwachindunji PVC/WPC extrusion chitoliro, mbiri ndi bolodi; kufananiza kumakhala kolimba pakuphatikiza, masterbatch ndi zodzaza kwambiri.

Factor	Conical twin screw mbiya	Parallel twin screw barrel
Kudyetsa khalidwe	Kutsegula kwakukulu kwa chakudya - kudya bwino kwa ufa wochepa kwambiri	Kudyetsa kofananirako kophatikiza ndi zakudya zamagulu
Kuponderezana	Kuphatikizika kwakukulu kumapangidwa mu tapered geometry	More mosalekeza psinjika pamodzi atakhazikika awiri
Kutentha / kukameta ubweya	Kuwongolera kofatsa, koyendetsedwa - kwabwino kwa PVC yosamva kutentha	Apamwamba kukameta ubweya - bwino kwambiri kusanganikirana ndi kubalalitsidwa
Kugwiritsa ntchito mwachizolowezi	PVC chitoliro, mbiri, pepala, WPC, matailosi utomoni	Masterbatch, kuphatikiza, high-CaCO₃ ndi ntchito yodzaza ndi magalasi
Kusamalira	Kuvala ndi chilolezo kumafunika kuyang'anitsitsa mosamala pa taper	Nthawi zambiri zosavuta za geometry standardization ndikusintha zinthu

Lamulo lothandiza la chala chachikulu: ngati chomaliza chanundiextrudate (chitoliro kapena bolodi molunjika pakufa), mbiya yamapasa yamapasa nthawi zambiri imakhala chida choyenera. Ngati mukupanga ma pellets kapena kubalaza phukusi lofunikira lowonjezera, yang'anani mbiya yofananira - makamaka mtundu wozungulira wozungulira wa carbonate wokwera kwambiri. Simukudziwa chomwe chikugwirizana ndi mzere wanu? Zathuscrew imodzi, ma conical ndi magawo ofanana onse akuwonetsedwa patsamba lazinthu.

Ntchito wamba

Chifukwa chimaphatikiza kudyetsa kolimba, kupanikizika kwambiri komanso kumeta ubweya wofewa, zomangira zamapasa ndi mbiya ndizomwe zimakhala zolimba-PVC ndi kutulutsa kwamatabwa-pulasitiki. Zimagwira bwino ntchito:

Pipi ya PVC- popereka madzi, ngalande ndi chitoliro chochokera ku PVC yowuma.
Mbiri ya PVC- mbiri yazenera ndi zitseko, zomangira m'mphepete ndi kudula.
PVC board & sheet- bolodi la thovu, pepala lowoneka ngati nsangalabwi ndi bolodi lopanda thovu (onani tsamba lathuPVC board conical twin screw mbiya).
WPC (yopangidwa ndi matabwa-pulasitiki)- kukongoletsa, mapanelo a khoma ndi mbiri kuchokera kumagulu odzazidwa ndi matabwa.
Zopangidwa ndi PE komanso zopangira matailosi- kuphatikiza matailosi okhala ndi malata ndi mbiri zodzazidwa ndi PE.
Kujambula kwa PVC- kutembenuza PVC youma-kusakaniza kukhala ma granules kuti agwiritse ntchito kunsi kwa mtsinje.

PVC board conical twin screw barrel for foam and marble sheet extrusion — Conical twin screw mbiya yopangidwira PVC board ndi foam-sheet extrusion.

Momwe mungasankhire mbiya yoyenera ya conical twin screw

Kusankha kumatsikira pa mafunso atatu: ndi zinthu ziti zomwe mukuyendetsa, ndi zotulutsa ziti zomwe mukufuna, ndipo kapangidwe kanu kamakhala kowopsa bwanji? Gwiritsani ntchito matrix omwe ali pansipa ngati poyambira, kenako tsimikizirani kukula kwake pamakina anu.

Zinthu / zosowa zanu	Kusintha koyenera	Kusankha kwapamwamba / zinthu
Chitoliro cholimba cha PVC & mbiri	Ma geometry owoneka bwino akukula kwa extruder yanu (monga 55/110, 65/132)	Nitrided 38CrMoAlA ya PVC yoyera, yotsika kwambiri
PVC + high CaCO₃ filler	Conical yokhala ndi zone yolimbikitsira, kapena kukwera mpaka kozungulira kozungulira	Bimetallic / tungsten-carbide layer (62 HRC) ya abrasion
WPC / wood-fiber mankhwala	Conical yokhala ndi polowera mwamphamvu komanso chitetezo chovala	Bimetallic - fiber fiber + fillers ndizovuta kwambiri
PVC thovu bolodi / pepala	Conical yokonzedwa kuti iwonetse kutentha kwasungunuka komanso kuthamanga kokhazikika	Nitrided kapena bimetallic kutengera mulingo wodzaza
Kutulutsa kwakukulu pamapazi omwewo	Chiŵerengero chokulirapo cha m'mimba mwake ndi/kapena kutalika kogwira mtima	Fananizani kuuma kwa maola othamanga ndi kulemetsa kwa filler

Kaya yankho lingakhale lotani, chinthu chimodzi chofunikira kwambiri ndikufananiza mbiya ndi makina omwe alipo. Zigawo za conical ndizozolowera ku extruder zomwe zimathamangiramo, kotero chojambula - kapena sampuli yokhala ndi miyeso yayikulu (chakudya / kufa m'mimba mwake, mtunda wapakati, utali wonse ndi tsatanetsatane wa flange) - imatilola kuti tigwire mawu olowa m'malo momwemo osati gawo "lotseka mokwanira". Ngati mukufuna mzere wonse osati gawo, timamangansomakina onse extruder.

Kuyika ndi mawaya oyambira

Mgolo wolondola umagwira ntchito ngati wayikidwa mozungulira, woyera komanso wotenthedwa bwino. Masitepe omwe ali pansipa ndikuwunikira mwachidule - nthawi zonse tsatirani malangizo a wopanga makina anu ndi njira zotsekera.

Tsitsani ndikutseka.Patulani galimoto ndi ma heaters onse musanachotse mbiya yakale. Tsimikizirani ziro mphamvu musanayambe.
Tsukani nkhope zokwerera.Chotsani zosindikizira zakale, kaboni ndi ma burrs ku flanges ndikuyang'ana nkhope kuti mipando yatsopano ya mbiya ikhale yopanda kupotoza.
Phimbani ndi kugwirizanitsa.Gwirizanitsani mbiya yokhotakhota ku bokosi la giya / chakudya, kuyang'ana kukhazikika komanso kuti zomangira zitembenuke momasuka ndi dzanja mphamvu isanagwiritsidwe.
Yambani madera otentha.Lumikizaninso zotenthetsera zamagulu ndi kuziziritsa pagawo lililonse (chakudya → kuponderezana → metering), ndipo pangani thermocouple iliyonse kunjira yoyenera yowongolera kuti pasapezeke chigawo chodutsa mawaya.
Khazikitsani mbiri yonyowa.Bweretsani mbiyayo kuti itenthe pang'onopang'ono ndikulola kuti chitsulo chisungunuke kuti chisungunuke musanayambe zomangira - kuyambitsa kuwonongeka kwa torque.

Malangizo a Heater-zone:sungani malo odyetserako ozizira kwambiri ndipo onjezerani kutentha mpaka kufa. Magawo osagwirizana kapena osokonekera ndi chimodzi mwazinthu zomwe zimachititsa kuti mikwingwirima yakuda ndi yakuda - iwunikidwe kawiri pakatha kusintha mbiya.

Kuthetsa mavuto ndi kuvala

Mavuto ambiri a migolo ya conical amadziwonetsa okha ngati osakhazikika, kutenthedwa kapena kutsika kwazinthu. Gwiritsani ntchito tebulo ili kuti musunthe mwachangu kuchoka pachizindikiro kupita ku chomwe chingakonze.

Chizindikiro	Mwina chifukwa	Konzani
Zotsatira zimasintha / kuchuluka	Kusasinthasintha kwa zakudya, maulendo apandege, kapena kutentha kwa ndege	Yang'anani chakudya, tsimikizirani kutentha kwa madera, yesani kuchotsedwa kwa screw/migolo
Kutentha kwambiri	Kusalinganika kwa heater, kukangana kwakukulu, kapena kuziziritsa kotsekeka	Yang'anani chigawo chilichonse ndi dera lozizira; sinthaninso mapu a thermocouples
Kusauka kwa pulasitiki	Kukonzekera kolakwika kwa phula kapena mbiya yotha	Tsimikizani kasinthidwe; fufuzani chilolezo chokulirapo kuchokera kuvala
Mizere yakuda / mikwingwirima	Madontho akufa okhala ndi zinthu zowonongeka, kapena ziboliboli	Tsukani ndi kuyeretsa bwino; fufuzani bore ndi wononga pamwamba
Kuvala kwambiri / mwachangu	Abrasive filler, kusamalidwa bwino, kapena kuuma mocheperako	Sinthani kukhala bimetallic / tungsten-carbide mbiya; kulimbitsa kusunga

Kuvala ndikwachilendo - cholinga chake ndikupangitsa kuti chikhale chocheperako komanso chodziwikiratu. Ma Abrasive fillers (CaCO₃, matabwa a matabwa, galasi) amaukira bore ndikuuluka mwachangu kwambiri, chifukwa chake cholowa chamkati chozama komanso cholimba chimadzilipira. Malo owonjezera a 62 HRC tungsten amangotenga nthawi yayitali motsutsana ndi zinthuzo kuposa kumaliza kwa 58 HRC, kutambasula kapitawo pakati pa zomanganso.

Mndandanda wa kasamalidwe

Kufufuza kwakanthawi kochepa kumalepheretsa kulephera kwamtengo wapatali. Pangani izi muzochita zanu:

Nthawi	Onani	Zochita
Kusintha kulikonse	Zone kutentha & ma amps	Kuwerenga zipika; fufuzani kusokonekera kulikonse kuchokera pazoyambira
Mlungu uliwonse	Sungunulani khalidwe & pamwamba mapeto	Onerani mizere yatsopano, ma gels kapena kusintha kotuluka
Mwezi uliwonse	Chotsani & zowonera bore / screw cheke	Kuyeretsa madontho akufa; kuyang'ana zigoli kapena kusinthika
Kotala lililonse	Screw / mbiya chilolezo	Yezerani kusiyana; yerekezerani ndi spec kuti muwunikire mavalidwe
Monga kufunikira	Heater & thermocouple kukhulupirika	Bwezerani mabandi/zomvera zolephera zisanayambitse zinthu zoyipa

Mafunso omwe amafunsidwa pafupipafupi

Kodi conical twin screw barrel ndi chiyani?

Ndi gawo lopindika lopangidwa ndi ma twin-bore extrusion momwe zomangira ziwiri zozungulira zimazungulira mkati mwa mbiya yofananira. The taper compresses ndi plasticizes zinthu kwa utali wautali, kupanga conical wononga mbiya yabwino PVC chitoliro, mbiri, pepala ndi WPC extrusion.

Ndi zipangizo ziti zomwe zimagwiritsidwa ntchito bwino?

PVC yolimba (chitoliro, mbiri, bolodi ndi pepala), gulu lamatabwa-pulasitiki, mbiri ya Pe-based ndi matailosi a resin, kuphatikiza PVC pelletizing. Imasamalira ufa wowuma wosakanizika wochepa kwambiri makamaka chifukwa cha chakudya chake chachikulu.

Kodi zimasiyana bwanji ndi parallel twin screw barrel?

A conical mbiya tapers ndi kumanga psinjika mkulu ndi kukameta ubweya wofatsa, suiting mwachindunji PVC/WPC extrusion. Amapasa ofanana screw mbiyaamasunga m'mimba mwake nthawi zonse ndi kukameta ubweya wambiri, zomwe zimagwirizana ndi kuphatikiza, masterbatch ndi zodzaza kwambiri.

Kodi pakati pa screw ndi mbiya pali kusiyana kotani?

Kutuluka ndi kampata kakang'ono pakati pa nsonga yowulukira ndi khoma lobowola. Imayikidwa yolimba komanso yolondola pa gawo latsopano; pamene imatsegula kuchoka ku kuvala, kutulutsa ndi kutsika kwapang'onopang'ono. Kuyeza nthawi ndi nthawi ndiyo njira yomveka bwino yowonera kavalidwe ka migolo.

Kodi ndingayikire bwanji mbiya yamapasa ya conical?

Tsitsani ndikutseka, yeretsani nkhope zokwerera, kwezani ndikuyanitsa kuti zomangira zitembenuke momasuka, ikani ma heater ndi thermocouple molondola, kenaka bweretsani mbiyayo kuti itenthe pang'onopang'ono ndikuviika musanayambe zomangira.

Nchiyani chimayambitsa kuvala kwa conical twin screw barrels?

Makamaka zodzaza ndi abrasive monga calcium carbonate, ulusi wamatabwa ndi galasi, zomwe zimaipiraipira chifukwa cha dzimbiri kuchokera ku kukonza kwa PVC, kusamalidwa bwino komanso kuuma komwe sikunatchulidwe. Kuzama kwa bimetallic kapena tungsten-carbide wosanjikiza kumatsutsa zonse zitatu bwino kwambiri.

Kodi mbiya iyenera kuyang'aniridwa kapena kusinthidwa kangati?

Chitani zowona ndi zoyeretsa mwezi ndi mwezi ndikuyesa chilolezo mwezi uliwonse. Nthawi yosinthira imatengera kuchuluka kwa zodzaza ndi maola othamanga - tsatirani mavalidwe m'malo modikirira kulephera, ndikumanganso kapena kusinthira pomwe chilolezo chikadutsa.

Kodi ndingasankhe bwanji kukula koyenera kwa mzere wanga wa extrusion?

Fananizani chiŵerengero cha m'mimba mwake ndi kutalika kwa chitsanzo chanu cha extruder ndi chandamale, ndiye sankhani chithandizo chapamwamba kutengera momwe mapangidwe anu amachitira. Tumizani chojambula kapena chitsanzo chokhala ndi miyeso yayikulu kuti mbiya ikhale yokwanira ndendende, osati kungoyerekeza.

Mukufuna conical twin screw mbiya yofananira ndi makina anu?

Titumizireni chojambulira chanu - kapena chitsanzo chokhala ndi miyeso yayikulu - ndipo mainjiniya athu azifotokoza za nsonga zamapasa ndi mbiya zokhala ndi kuuma koyenera kwa zinthu zanu. Pogwiritsa ntchito nitriding, bimetallic ndi tungsten-carbide processing, timapanga zigawo zomwe zimafika 62 HRC mkati mwa bore kwa moyo wautali.

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Makina Apulasitiki a Nanhaiya (Zhoushan) · Makasitomala 500+ padziko lonse lapansiwosakwatiwa, mapasa a conical & mapasa ofananascrew migolo