1. Hlunga kanye nombhobho ohlangene
Ukungcola kwepulasitiki kungasuswa ngesihlungi se-nozzle enwebekayo, okungukuthi, ukuncibilika nokugeleza kwepulasitiki ngesiteshi, esihlukaniswa endaweni encane ngokufaka.Lokhu kuncipha kanye nezikhala kungasusa ukungcola futhi kuthuthukise ukuxutshwa kwamapulasitiki.Ngakho-ke, i-mixer engaguquki ingasetshenziswa ukufeza umphumela ongcono wokuxuba.Lawa madivaysi angafakwa phakathi kwesilinda somjovo kanye nombhobho womjovo ukuze ahlukanise futhi axube kabusha ingcina encibilikisiwe.Iningi lazo lenza ukuncibilika kugeleze emseleni wensimbi engagqwali.
2. Ukukhathala
Amanye amapulasitiki adinga ukushaywa umoya kusilinda womjovo ngesikhathi sokubumba umjovo ukuze igesi iphume.Ezimweni eziningi, la magesi awumoya kuphela, kodwa angase abe amanzi noma amagesi e-molecule eyodwa akhishwa ngokuncibilika.Uma la magesi engakwazi ukukhululwa, azocindezelwa yi-glue encibilikayo futhi alethwe esikhunjeni, esizokwandisa futhi senze ama-bubbles kumkhiqizo.Ukuze ukhiphe igesi ngaphambi kokuba ifike ku-nozzle noma isikhunta, nciphisa noma unciphise ububanzi bempande yesikulufu ukuze ucindezele ukuncibilika kusilinda womjovo.
Lapha, igesi ingaphuma emigodini noma emigodini yesilinda somjovo.Khona-ke, ububanzi bempande ye-screw buyanda, futhi i-glue encibilikayo ene-volatile isusiwe isetshenziswa ku-nozzle.Imishini yokubumba umjovo enalesi sikhungo ibizwa ngemishini yokubumba umjovo wokukhipha umjovo.Ngaphezulu komshini wokubumba umjovo we-exhaust, kufanele kube khona isishisi se-catalytic kanye nesikhiphi sentuthu esihle sokususa amagesi angaba yingozi.
3. Hlola i-valve
Kungakhathaliseki ukuthi hlobo luni lwesikulufu olusetshenziswayo, ithiphu layo livamise ukuhlonyiswa nge-valve yokumisa.Ukuze uvimbele ipulasitiki ukuthi ingaphumi ku-nozzle, kuzofakwa idivayisi yokunciphisa ingcindezi (reverse rope) noma umbhobho okhethekile.Uma usebenzisa ukunikezwa nokumaketha okulwa nokukhipha isisu, kufanele kubhekwe njalo, ngoba kuyingxenye ebalulekile yesilinda sokudubula.Njengamanje, i-nozzle yohlobo lwe-switch ayisetshenziswa kabanzi, ngoba kulula ukuvuza ipulasitiki nokubola kumishini.Njengamanje, uhlobo ngalunye lwepulasitiki lunohlu lwezinhlobo ezifanele zamabhomu okudubula.
4. Isivinini sokujikeleza sesikulufa
Ijubane lokuzungezisa lesikulufu lithinta kakhulu ukuzinza kwenqubo yokubumba umjovo kanye nokushisa okusebenza epulasitiki.Uma isikulufu siphenduka ngokushesha, izinga lokushisa liya phezulu.Lapho isikulufu sizungeza ngesivinini esikhulu, amandla okungqubuzana (shear) adluliselwa epulasitiki athuthukisa ukusebenza kahle kwe-plasticizing, kodwa futhi kwandisa ukungalingani kwezinga lokushisa elincibilikayo.Ngenxa yokubaluleka kwesivinini sendawo yesikulufu, isivinini sokuzungezisa isikulufu somshini wokubumba umjovo omkhulu kufanele sibe ngaphansi kwalelo lomshini wokubumba umjovo omncane, ngoba ukushisa kwe-shear okukhiqizwa isikulufu esikhulu kuphezulu kakhulu kunokwesikulufu. isikulufu esincane ngesivinini esifanayo sokuzungezisa.Ngenxa yamapulasitiki ahlukene, ijubane lokuzungeza isikulufa nalo lihlukile.
5. Isilinganiso somthamo we-plasticizing
Ukunquma ukuthi izinga lokukhiqiza lingagcinwa yini kuyo yonke inqubo yokukhiqiza, ifomula elula ehlobene nokuphumayo namandla okwenza ipulasitiki ingasetshenziswa kanje: T = (ingqikithi yokubhoboza komjovo gx3600) ÷ (inani le-plasticizing lomshini wokubumba umjovo kg / hx1000 ) t isikhathi esincane somjikelezo.Uma isikhathi somjikelezo wesikhunta singaphansi kuka-t, umshini wokubumba umjovo awukwazi ukwenza ipulasitiki ngokugcwele ukuze uzuze i-viscosity yokuncibilika okufanayo, ngakho-ke izingxenye zokubumba umjovo zivame ukuchezuka.Ikakhulukazi, lapho umjovo ubumba imikhiqizo enezindonga ezincane noma enembayo yokubekezelela, inani lomjovo kanye nenani lepulasitiki kufanele lihambisane.
6. Bala isikhathi nokubaluleka kokugcinwa
Njengomkhuba ojwayelekile, isikhathi sokuhlala sepulasitiki ethile emshinini othize wokubumba umjovo kufanele sibalwe.Ikakhulukazi lapho umshini omkhulu wokubumba umjovo usebenzisa umthamo omncane womjovo, ipulasitiki kulula ukubola, engabonakali ngokubhekwa.Uma isikhathi sokugcina sisifushane, ipulasitiki ngeke yenziwe ipulasitiki ngokufanayo;Impahla yepulasitiki izobola ngokukhula kwesikhathi sokugcina.
Ngakho-ke, isikhathi sokugcina kufanele sigcinwe singaguquki.Izindlela: ukuqinisekisa ukuthi okokufaka kwepulasitiki emshinini wokubumba umjovo kunokwakheka okuzinzile, usayizi ongaguquki kanye nokuma.Uma kukhona ukungahambi kahle noma ukulahleka ezingxenyeni zomshini wokubumba umjovo, bika emnyangweni wokulungisa.
7. Izinga lokushisa lesikhunta
Njalo hlola ukuthi umshini wokubumba umjovo usethiwe futhi usebenza ezingeni lokushisa elishiwo eshidini lokurekhoda.Lokhu kubaluleke kakhulu.Ngoba izinga lokushisa lizothinta ukuphela kwendawo kanye nesivuno sezingxenye ezibunjiwe ngomjovo.Wonke amanani alinganisiwe kufanele aqoshwe futhi umshini wokubumba umjovo uhlolwe ngesikhathi esibekiwe.
Isikhathi sokuthumela: Aug-15-2022