Kuvhura muchina mbiya chikamu
Mamwe dhizaini madhizaini anopa iyo yakasarudzika kumisikidzwa yemapatya screw extruders. Kana tikabatanidza bhodhoro rega rega neakakodzera screw kumisikidzwa, isu tichaitisa ongororo uye yakadzama yeimwe neimwe yemhando idzi dzemabhodhoro ekushanda kweyuniti kune icho chikamu che extruder.
Chikamu chega chega chebhari chine 8-yakaita chiteshi iyo screw shaft inopfuura. Iyo dhiramu yakavhurika ine nzira dzekunze dzekubvumira kudyisa kana kuburitsa zvinhu zvinoputika. Aya akavhurika dhiramu madhizaini anogona kushandiswa kudyisa uye kupera simba, uye anogona kuiswa chero kupi mukati mese dhiramu musanganiswa.
Feed
Zviripachena, izvo zvinhu zvinofanirwa kupihwa muextruder kuti utange kusanganisa. Chigubhu chekudyisa idhiramu rakavhurika rakagadzirirwa kuti rive nekuvhura pamusoro pemboro panodyirwa zvinhu. Nzvimbo inonyanyozivikanwa yedhiramu yekudyisa iri pachinzvimbo 1, inova dhiramu rekutanga muchikamu chemaitiro. Iyo granular zvinhu uye zvimedu zvinoyerera zvakasununguka zvinoyerwa uchishandisa feeder, zvichivabvumira kuti vadonhe zvakananga muextruder kuburikidza nedhiramu rekudya uye vasvike screw.
Mapoda ane low stacking density anowanzo kuunza matambudziko sezvo mhepo inowanzotakura inodonha. Mhepo inopunyuka iyi inovhara kubuda kwehupfu hwakareruka, zvichideredza kugona kwehupfu kudya pamwero unodiwa.
Imwe sarudzo yekudyisa hupfu ndeyekumisa mbiru mbiri dzakavhurika pamadhiramu maviri ekutanga eextruder. Muchigadziro ichi, poda inodyiswa mubhodhoro 2, ichibvumira mhepo yakadzika kuti ibudiswe kubva mubhodhoro 1. Ichi chigadziro chinonzi rear exhaust device. Iyo yekumashure vent inopa chiteshi chekuti mweya ubudiswe kubva kune extruder pasina kuvharira chute yekudyisa. Nekubviswa kwemhepo, poda inogona kudyiswa zvakanyanya.
Kana iyo polymer uye zvinowedzera zvinopihwa muextruder, aya maoriki anotakurwa kuenda kunzvimbo yakanyunguduka, uko iyo polymer inonyungudutswa uye yakasanganiswa nekuwedzera. Zvekuwedzera zvinogona zvakare kupihwa kuzasi kwerukova rwekunyunguduka uchishandisa side feeders.
Exhaust
Iyo yakavhurika chubhu chikamu chinogona zvakare kushandiswa kuneta; Iyo inopisa mhute inogadzirwa panguva yekusanganiswa inofanirwa kuburitswa iyo polymer isati yapfuura nemufa.
Iyo inonyanya kuoneka chinzvimbo chevacuum port iri kumagumo eiyo extruder. Ichi chiteshi chekuburitsa chinowanzoitika chakabatana nepombi yevacuum kuti ive nechokwadi chekuti zvinhu zvese zvinoputika zvakatakurwa mupolymer melt zvinobviswa zvisati zvapfuura nepamusoro pemusoro. Iyo yakasara mupfu kana gasi mukunyunguduka inogona kutungamira kune hurombo hwemhando yemhando, kusanganisira kupupa uye kuderedzwa kurongedza density, izvo zvinogona kukanganisa kurongedza kwezvimedu.
Yakavharwa dhiramu chikamu
Iyo yakajairika muchinjika-chikamu dhizaini yedhiramu ndeye chokwadi yakavharwa dhiramu. Iyo dhiramu chikamu chinoputira zvachose iyo polymer yakanyunguduka pamativi ese mana eiyo extruder, ine imwe chete 8-yakaita kuvhura iyo inobvumira pakati pescrew kupfuura.
Kana iyo polymer uye chero zvimwe zvekuwedzera zvanyatso kudyiswa muextruder, zvinhu zvichapfuura nepakati pechikamu chinotakura, iyo polymer ichanyungudutswa, uye zvese zvinowedzera nemapolima zvichasanganiswa. Bhari rakavharwa rinopa kudzora tembiricha kumativi ese eiyo extruder, nepo dhiramu rakavhurika riine mashoma maheater uye nzira dzekutonhora.
Kuunganidza extruder barrel
Kazhinji, iyo extruder ichaunganidzwa nemugadziri, ine dhiramu marongero anoenderana neinodiwa maitiro ekugadzirisa. Mune akawanda ekusanganisa masisitimu, iyo extruder ine yakavhurika yekudyisa bhodhoro mubhodhoro rekudya 1. Mushure meichi chikamu chekudya, kune akati wandei akavharwa madhiramu anoshandiswa kutakura zvakaomesesa, kunyungudutsa mapolymers, uye kusanganisa mapolymer akanyungudika uye zvinowedzera pamwe chete.
Iyo cylinder yekubatanidza inogona kuwanikwa mucylinder 4 kana 5 kubvumira kudyisa kwekupedzisira kwezvinowedzera, zvichiteverwa nemasilinda akawanda akavharwa kuti aenderere mberi nekusanganisa. Iyo vacuum exhaust port iri pedyo nekumagumo kweiyo extruder, inoteverwa zvakanyanya neyokupedzisira yakavharwa mbiya pamberi pemusoro unofa. Muenzaniso wekuunganidza dhiramu unogona kuonekwa muMufananidzo 3.
Kureba kweextruder kunowanzo kuratidzwa sereshiyo yehurefu kusvika sikuruu dhayamita (L/D). Nenzira iyi, kuwedzera kwechikamu chekugadzirisa kuchava nyore, sediki extruder ine L / D chiyero che40: 1 inogona kuwedzerwa kuva extruder ine dhayamita yakakura uye L / D urefu hwe40: 1.
Nguva yekutumira: Kubvumbi-04-2023