Izindaba Zemboni

Ukuxuba okusabalalisa kusabalalisa izingxenye ngokusebenzisa ukuncibilika; i-dispersive mixing breaks ihlanganisa noma inciphisa usayizi wesigaba esihlakazekile. Ukulungiswa kwezikulufu ezimbili kuvame ukudinga kokubili, kodwa ibhalansi kufanele ilandele isici nokwakheka kunokuncanyelwayo kokugunda okuphezulu. Okokuqala thola inkinga, bese uqhathanisa ikhwalithi yokuxuba ngaphakathi kwemikhawulo eshisayo nemishini yomugqa.

Khetha i-conical twin screw extruder noma i-parallel twin screw extruder ngokwakhiwa kwe-PVC, iwindi lokukhiqiza elidingekayo nokulungiselelwa komshini, hhayi ilebula yejiyomethri iyodwa. Qhathanisa imisebenzi yenqubo efanayo, bese uhlola okukhiphayo okwamukelwe, ikhwalithi yomkhiqizo, ukusetshenziswa kwamandla nokuhambisana kwemishini. Ngolayini okhona, nquma ukuthi ingabe udinga izingxenye ezishintshayo noma ukwakheka komshini ohlukile ngaphambi kokucela ikhotheshini.

I-Extruder screw pitch iyisikhala se-axial phakathi kwezindiza eziseduze; umthofu ukuqhubekela phambili kwe-axial ye-helix efanayo ngokujika okukodwa okuphelele. Ayalingana esigabeni esivamile sokuqalisa okukodwa, kodwa hhayi kuso sonke isikulufu. Khetha ushintsho lomthofu ngomphumela walo ekuphakeleni, ekuncibilikeni nasekuletheni ingcindezi, kunokuba ucabange ukuthi isikhala esibanzi siqinisekisa umkhiqizo omuhle kakhulu.

Ukujula kwesikulufu se-Extruder kuchaza isikhala phakathi kwempande yesikulufu kanye nereferensi yangaphandle echaziwe. Isiteshi esijulile sinikeza isikhala esengeziwe, kodwa asilethi ngokuzenzakalelayo umphumela omuhle kakhulu ngokumelene nokumelana nokufa. Khetha iphrofayili ngokuphakela, ukuncibilika kanye nemisebenzi yokumpompa, ngobukhulu bangempela, impahla kanye nomgqomo ofanayo ochaziwe.

Isilinganiso se-screw extruder L/D esisodwa ubude bokusebenza obushiwo obuhlukaniswa ngedayamitha yesikulufu sokuzisholo. Ikhethe ngesikhala esidingekayo sokuphakela, ukuncibilika, ukuxutshwa, ukukhipha umoya kanye nokuthuthukiswa kwengcindezi, hhayi ngokucabanga ukuthi isikulufu eside siletha okukhiphayo okwengeziwe. Qinisekisa idatha yokulinganisa nokuhambisana komshini ngaphambi kokuqhathanisa izingcaphuno.

I-Extrusion screw compression ratio ichaza ukuncipha kwevolumu yesiteshi ukusuka ekuphakeleni ukuya kumitha; ngezikulufo ezivamile ezinomthofi ofanayo kuzo zombili zoni, kuvame ukuvezwa njengokujula kweshaneli yokuphakelayo kuhlukaniswe ukujula kweshaneli yokulinganisa. Ikhethe ngokujula kwangempela, ubude benguquko, i-feedstock nedizayini yomgqomo, hhayi egameni le-polymer kuphela. Isilinganiso esiphezulu akusona ngokuzenzakalelayo isikulufu esingcono.