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Kutsanangura imwe yekutsiva screw, tumira mapoka mana eruzivo: muchina uye interface ruzivo, inodzorwa dimensional rekodhi, iyo yakagadziriswa zvinhu uye basa rekushandisa, uye zvakajeka zvinodiwa zvekugamuchira. Sample yakasakara inobatsira, asi humbowo hwezvese magadzirirwo ekutanga uye kukuvara kunotevera. Fekitari inofanira kusiyanisa pakati pezviviri izvi isati yabvumira mufananidzo.

Iyo screw uye mbiya yekugadzira maitiro inowanzo sanganisira ongororo yekushandisa, zvinhu uye pamusoro-hurongwa sarudzo, kugadzirira isina chinhu, yakaomarara uye yekupedzisa machining, kupisa kupisa kana hardfacing, kunyatso kupedzisa, dimensional kuongorora uye kuchengetedzwa kurongedza. Kurongeka hakusi kwese. Inofanirwa kurongwa kutenderedza geometry, kurapwa uye zviyero zvekupedzisira zveiyo chaiyo chikamu.

A parallel twin screw extruder ine maviri anogara-dhayamita intermeshing screws akavakwa kubva modular elements. Mazhinji ari kutenderedza, achimhanya nekumhanya kukuru kusanganisa - izvo zvinovaita iwo muchina wakajairwa wekubatanidza, masterbatch, WPC uye pelletizing. Kusiyana nemuchina weconical, iyo screw profile inogona kuvakwa patsva kune yega yega gadziriso.

Imwe screw barrel is one screw inotenderera mukati meinodziya cylindrical barrel, kuendesa, kunyunguduka uye kupomba epurasitiki kuburikidza nefa. Kuita kunoiswa zvakanyanya nezvinhu zvitatu: L/D ratio, compression ratio uye screw type (standard, barrier or mixing). Iyo ndiyo yakanyanya hupfumi sarudzo yekumusoro-kubuda extrusion yezvinhu yunifomu - kuvhuvhuta firimu, pombi kubva pamapellets, sheet uye granulation.

Twin screw extruder inoshandisa masiruuru maviri anopindirana mukati medhiramu-mapatya kudyisa, kunyungudusa, kusanganisa uye kupomba purasitiki kuburikidza nedhiresi. Mhuri mbiri idzi huru ndeye conical (tapered screws, yakanakira yakananga PVC pombi, mbiri uye bhodhi extrusion) uye parallel (inogara-dhayamita, segmented screws, yakanakira kusanganisa, granulation uye yakakwirira-yekuzadza musanganiswa).

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.