Direct extrusion ndi chimodzi mwazomwe zikukulaExtrusion luso.Pamaziko a kuwunika mawonekedwe a co rotating twin screw extrusion pakusakaniza, mfundo zina zofunika pazida, njira, ndi nkhungu za extrusion mwachindunji ndi co rotating twin screw extruder zilipo.
Twin-screw extruder imagwiritsidwa ntchito kwambiri polima polima.Kaya ikhoza kutulutsidwa mwachindunji, ndiko kuti, kaya ikhoza kumalizidwa nthawi imodzi, ikhoza kugawidwa m'magulu awiri: co-directional rotation ndi hetero-directional rotation.Coaxial twin screw mu osakaniza ndi kuumba extrusion.Kukhala ndi luso lamphamvu losakanikirana, lomwe limagwiritsidwa ntchito makamaka posintha, kudzaza, 1 kukulitsa mwachindunji ndi kutulutsa pulasitiki ndikusakanikirana ndi kupanga kophatikizira kophatikizana kophatikizana kophatikizana kophatikizana, kachitidwe ka extrusion nthawi zambiri kumatengera mawonekedwe a modular mwachindunji ali muzinthu zomwe zimayambira. wa dongosolo kusanganikirana kwathunthu, mosiyanasiyana synfuels fiasco chubu chigawo chimodzi, kuphatikiza wononga zinthu kukhutiritsa extruder akhoza kumanga kuthamanga kokwanira ndi kuyenda bata.Malinga ndi ndondomeko yeniyeni yosanganikirana yotumizira, kusungunuka, kusakaniza, kutsika, homogenizing ndi zina zotero, momwe zimakhalira ndi mapasa-screw extruder omwe amagwiritsidwa ntchito posakaniza amawunikidwa poyamba.
1.Non - mapasa otsogolera - screw angakhazikitse kuthamanga kwapamwamba ndi kuyenda kosasunthika
Liwiro kasinthasintha ndi kubalalitsidwa kwenikweni, makamaka ntchito mankhwala amafuna olondola gawo kukula akamaumba ndi extrusion, monga chuluni-mbali mapasa wononga wononga mkulu wachibale liwiro likhoza kutulutsa mkulu mawonekedwe amapasa screw extruder kwa PVC mbiri akamaumba ndi extrusion.Poyerekeza ndi kumeta ubweya wa ubweya ndi kumeta ubweya wokulirapo, kuthamanga kwa kasinthasintha kumakwera, zotsatira zake zimakhala bwino.The single-screw extruder imatha kutengera malo otakata, koma mawonekedwe ake osiyanasiyana sali abwino ngati kusakanikirana kwa dispersive.pa nthawi yomweyo, mkulu kasinthasintha liwiro anafooka kusamutsidwa zabwino za wononga amapasa otchuka kwambiri, wononga limodzi amagwiritsidwa ntchito akamaumba extrusion, wononga ambiri udindo, kuti bata la extrusion.
Mapangidwe apadera malinga ndi ndondomeko yeniyeni ya extrusion ndi mankhwala.
2.Principle of screw element design
Pogwiritsira ntchito zinthu zapadera zopangira zinthu ziyenera kusakaniza granulation ndi kuumba extrusion kusanganikirana ndi mbali yofanana ya wononga wononga wononga amapasa makamaka molingana ndi "kuchokera woyera" masitepe oyambirira awiri, ndipo makamaka ndi mbali yomweyo ya wononga wononga. ndi wononga limodzi kuti amalize mapangidwe, mfundo imeneyi imatsimikizira kuti ndime yotalikirapo iyenera kukhala yotseguka, kuti wononga ziwirizo.Pambuyo pa granulation yawiri wononga osakaniza, zinthu utakhazikika kutentha firiji, ndi kusinthana zinthu kumachitika pakati pa wononga wononga mipiringidzo, monga momwe chithunzi 1 (a) . Pamene longitudinal otaya njira ndi lotseguka, kutentha kukwera kachiwiri mpaka zinthu zisungunuke.Pambuyo pokonza ziwiri, ndizotheka kutsegula njira yodutsamo kuti muzindikire kuchuluka kwa kugwiritsira ntchito mipata yoyandikana nayo wononga wononga, kuwonjezeka kwa mtengo wokonza, kutalika kwa nthawi yopangira komanso kusinthana kwa zinthu.Chotsatira chake, kugawidwa kusakanikirana kwa mbiri ya kutentha kumawonjezeka ndipo ntchito imachepa.mwachilengedwe kumabweretsa vuto: kuthekera, komanso kufooketsa zotsatira zabwino zakusamuka.
Nthawi yotumiza: Jul-18-2019