Malo obwezeretsanso zinthu za PET ali ndi zida zambiri zofunika zogwirira ntchito zolumikizidwa ndi makina operekera mpweya ndi makina. Nthawi yogwira ntchito chifukwa cha kapangidwe koyipa ka makina otumizira, kugwiritsa ntchito molakwika zida, kapena kusakonza sikuyenera kukhala yeniyeni. Funsani zambiri.#Njira Zabwino Kwambiri
Aliyense amavomereza kuti kupanga zinthu kuchokera ku PET yobwezerezedwanso (rPET) ndi chinthu chabwino, koma kupanga zida zapamwamba kuchokera kuzinthu zosafunikira, monga mabotolo a PET omwe adagwiritsidwa ntchito kale, sikophweka. Zipangizo zovuta zogwirira ntchito (monga kusanja kwa kuwala, kusefa, kutulutsa, ndi zina zotero) zomwe zimagwiritsidwa ntchito m'mafakitale a rPET kuti izi zitheke zalandira chidwi chachikulu - ndipo moyenera. Tsoka ilo, machitidwe oyendera omwe amasuntha zinthu pakati pa zida izi nthawi zina amawonjezedwa ngati lingaliro lomaliza, zomwe zingayambitse kusagwira bwino ntchito kwa chomera chonse.
Mu ntchito yobwezeretsanso zinthu za PET, ndi njira yotumizira zinthu yomwe imagwirizanitsa magawo onse a ndondomekoyi - kotero iyenera kupangidwira makamaka zinthuzi.
Kusunga chomera chanu chikugwira ntchito kumayamba ndi kapangidwe kabwino ka chomera, ndipo si zida zonse zosamutsira zomwe zimapangidwa mofanana.zonyamulira zokulungirazomwe zagwira ntchito bwino kwambiri pa ma chip line m'zaka khumi zapitazi mwina sizikula kwambiri ndipo sizingagwire ntchito mwachangu pa ma flake line. Chotengera cha pneumatic chomwe chimatha kusuntha ma chips olemera 10,000 lb/hr chingathe kusuntha ma chips olemera 4000 lb/hr okha. Vuto lofala ndi kusatsatira malangizo opangira makamaka pogwiritsira ntchito zinthu zobwezerezedwanso.
Chonyamulira mpweya chomwe chimatha kusuntha ma chips olemera 10,000 lb/hr chingathe kusuntha ma chips olemera 4000 lb/hr okha.
Lingaliro lofunika kwambiri kuganizira ndilakuti kuchuluka kochepa kwa ma PET bottle flakes kumachepetsa mphamvu yeniyeni ya makina osamutsira poyerekeza ndi kuchuluka kwakukulu kwa zinthu zopangidwa ndi granular. Ma flakes nawonso ndi osakhazikika bwino. Izi zikutanthauza kuti zida zogwiritsira ntchito mapepala nthawi zambiri zimakhala zazikulu kwambiri. Chotengera cha skurufu cha ma PET chips chingakhale theka la m'mimba mwake ndipo chimagwiritsa ntchito magawo awiri mwa atatu a mphamvu ya injini ya chotengera cha skurufu chopangidwira ma flakes. Dongosolo losamutsira la pneumatic lomwe lingasunthe chip ya 6000 lb/hr kudzera mainchesi atatu. Chitoliro chiyenera kukhala mainchesi 3.5. Gawo. Zolimba ndi mpweya wa mpaka 15:1 zingagwiritsidwe ntchito pa ma flakes, koma ndibwino kugwiritsa ntchito makina a flake okhala ndi chiŵerengero chapamwamba cha 5:1.
Kodi mungagwiritse ntchito liwiro lomwelo lonyamula mpweya kuti ma flakes agwire tinthu tofanana? Ayi, ndi otsika kwambiri kuti tipeze kayendedwe kosasinthasintha kwa ma flakes. Mu bokosi losungiramo zinthu, 60° cone yomwe imalola tinthu kuti tiyende mosavuta iyenera kukhala 70° cone yayitali ya ma flakes. Kutengera ndi kukula kwa chidebe chosungiramo zinthu, kungakhale kofunikira kuyambitsa silo kuti ma flakes ayende. Ambiri mwa "malamulo" awa amapangidwa poyesa ndi kulakwitsa, choncho dalirani mainjiniya omwe ali ndi luso lopanga njira makamaka za ma flakes a rPET.
Ma glidant ena achikhalidwe opangira zinthu zolimba kwambiri sakwanira mapiritsi a mabotolo. Chotulutsira silo chomwe chawonetsedwa pano chimathandizidwa ndi silu yokhotakhota yomwe imaswa milatho ndikutulutsa ma flakes mu airlock yozungulira kuti ilowetsedwe mu dongosolo lodalirika komanso lokhazikika la mpweya.
Kapangidwe kabwino ka makina operekera katundu sikutsimikizira kudalirika kwa makinawo. Kuti zinthu zomwe zili mu makina otumizira katundu zigwire ntchito modalirika, ziyenera kupangidwira makamaka ma flakes a rPET.
Ma valve ozungulira omwe amalowetsa ma flakes mu makina operekera mphamvu kapena gawo lina lililonse la ntchitoyi ayenera kukhala olemera kwambiri kuti athe kupirira zaka zambiri zogwiritsidwa ntchito molakwika ndi ma flakes osakhazikika ndi zinthu zina zonse zodetsa zomwe zimadutsamo. Nyumba zolemera zachitsulo chosapanga dzimbiri ndi ma rotor zimadula kwambiri kuposa mapangidwe achitsulo chopyapyala, koma ndalama zowonjezera zimachepetsedwa ndi nthawi yochepa yogwira ntchito komanso ndalama zochepa zosinthira zida.
Ma PET flakes obwezerezedwanso amasiyana ndi ma PET flakes mu mawonekedwe a tinthu tating'onoting'ono kapena kuchuluka kwa zinthu. Amathanso kukanda.
Ma rotor omwe ali mu ma valve ozungulira omwe amapangidwira lamella ayenera kukhala ndi rotor yooneka ngati V ndi "pula" m'malo olowera kuti achepetse kusweka ndi kutsekeka. Nthawi zina nsonga zosinthasintha zimagwiritsidwa ntchito kuthetsa mavuto osweka, koma izi zimafuna kusamalidwa nthawi zonse komanso kuyambitsa zidutswa zazing'ono zachitsulo zomwe zingayambitse mavuto pambuyo pake.
Chifukwa cha kukula kwa ma flakes, zigongono m'makina operekera mpweya ndi vuto lofala. Dongosolo lonyamulira mapepala limakhala ndi liwiro lalikulu, ndipo pepala lotsetsereka pamwamba pa chigongono lidzadutsa mu chubu chachitsulo chosapanga dzimbiri cha grade 10. Ogulitsa osiyanasiyana amapereka zigongono zapadera zomwe zimachepetsa vutoli, ndipo zimatha kupangidwa ndi akatswiri amakina.
Kuwonongeka kumachitika pa ma radius bend anthawi zonse pamene zinthu zolimba zokwawa zimatsetsereka pamwamba panja pa liwiro lalikulu. Ganizirani kugwiritsa ntchito ma bend ochepa momwe mungathere, komanso mwina ma bend apadera omwe amapangidwira kuchepetsa kuwonongeka kumeneku.
Kupanga ndikugwiritsa ntchito dongosolo lokonza makina onyamulira katundu a fakitale ndi gawo lomaliza, chifukwa pali zinthu zambiri zosuntha zomwe zimakumana mwachindunji ndi zipsera zosakhazikika komanso kuipitsidwa. Tsoka ilo, kukonza komwe kukukonzekera nthawi zambiri kumanyalanyazidwa.
Ma airlock ena ozungulira amakhala ndi ma shaft seal omwe amafunika kumangidwa nthawi zonse kuti apewe kutuluka kwa madzi. Yang'anani ma valve okhala ndi ma labyrinth shaft seal ndi ma outboard bearing omwe safuna kukonzedwa nthawi zonse. Ma valve awa akagwiritsidwa ntchito pamapepala, nthawi zambiri ndikofunikira kuyeretsa shaft seal ndi mpweya woyera wa zida. Onetsetsani kuti kuthamanga kwa shaft seal purish kwakhazikitsidwa bwino (nthawi zambiri pafupifupi 5 psig kuposa kuthamanga kwakukulu kotumizira) komanso kuti mpweya ukuyenda bwino.
Ma rotor ozungulira omwe agwiritsidwa ntchito nthawi zambiri amatha kuyambitsa kutayikira kwakukulu m'makina abwino operekera mphamvu. Kutayikira kumeneku kumachepetsa kuchuluka kwa mpweya wotumizidwa mu duct, motero kumachepetsa mphamvu yonse ya makinawo. Kungayambitsenso mavuto olumikizana ndi hopper pamwamba pa chotseka chozungulira, choncho yang'anani mpata pakati pa nsonga ya rotor ndi nyumbayo nthawi zonse.
Chifukwa cha kuchuluka kwa fumbi, zosefera za mpweya zimatha kutseka zomera za rPET mwachangu musanatulutse mpweya wonyamula mpweya kubwerera mumlengalenga. Onetsetsani kuti choyezera mphamvu chosiyana chikugwira ntchito bwino ndipo onetsetsani kuti wogwiritsa ntchito akuyang'ana nthawi zonse. Fumbi la PET lopepuka komanso lofewa kwambiri limatha kutseka kapena kutseka chotulutsira cha chosonkhanitsa, koma chotumizira chapamwamba kwambiri mu cone yotulutsira madzi chingathandize kuzindikira zotsekeka izi zisanabweretse mavuto akulu. Onetsetsani kuti nthawi zonse mumachotsa fumbi lomwe lili mkati mwa thumba.
Nkhaniyi singathe kufotokoza malamulo onse ofunika kwambiri pakupanga ndi kusamalira makina osamutsira m'mafakitale a rPET, koma tikukhulupirira kuti mukumvetsa kuti pali mfundo zambiri zoti muganizire ndipo palibe chomwe chingalowe m'malo mwa chidziwitso. Ganizirani kutsatira malangizo a ogulitsa zida omwe adagwira ntchito ndi ma flakes a rPET m'mbuyomu. Ogulitsa awa adakumana ndi mayesero onse, kotero simuyenera kuwadutsanso.
Za Wolemba: Joseph Lutz ndi Mtsogoleri wa Malonda ndi Malonda ku Pelletron Corp. Ali ndi zaka 15 zaukadaulo pakupanga njira zogwiritsira ntchito zinthu zapulasitiki zambiri. Ntchito yake ku Pelletron inayamba mu kafukufuku ndi chitukuko, komwe adaphunzira za pneumatics mu labu yoyesera. Lutz wayambitsa machitidwe ambiri otumizira pneumatics padziko lonse lapansi ndipo wapatsidwa ma patent atatu atsopano azinthu.
Ukadaulo watsopano, womwe udzayamba ku NPE mwezi wamawa, umachenjeza nthawi yomwe kukonza koteteza kumafunika kuti zida zisawonongeke.
Poyerekeza ndi mtengo wogulira utomoni wopaka utoto kapena kukhazikitsa chosakanizira chapakati chokhala ndi mphamvu zambiri kuti chisakanize utomoni ndi masterbatch, utoto pamakina ungapereke ubwino waukulu wamtengo, kuphatikizapo kuchepetsa ndalama zosungiramo zinthu komanso kusinthasintha kwa njira zogwirira ntchito.
Pa makina operekera vacuum kuti agwiritsidwe ntchito pokonza mapulasitiki, njira zogwiritsira ntchito ufa zomwe zakonzedwa mwamakonda sizimafunikira nthawi zonse. Njira zoyendetsera zinthu zopangidwa kale zitha kukhala chisankho chabwino kwambiri cha ufa ndi zinthu zolimba m'mafakitale osiyanasiyana.
Nthawi yotumizira: Julayi-25-2022
