Ifakwe i-fluorineivalvu yebhabhathaneuhlobo lwe-lining valve oluvame ukusetshenziswa kuma-acid kanye nama-alkali kanye neminye imithombo ebolile. Lusetshenziswe kabanzi ku-petroleum, amakhemikhali, ezemithi, i-metallurgy, amandla kagesi kanye neminye imboni. Ngenxa yobunzima bezici zalo zesakhiwo kanye nobunzima bezinto zokubopha uthango Ukuhlukahluka, abasebenzisi bavame ukungazi ukuthi bangaqala kanjani ukukhetha, lesi sihloko sizokwethula indlela yokukhetha i-butterfly valve ene-fluorine.
1. I-valve yebhabhathane efakwe i-fluorine iwungqimba lwepulasitiki olugoqwe ebusweni bomzimba we-valve yensimbi ehlanganisiwe noma yensimbi engagqwali kanye neqembu le-valve yediski elithinta uketshezi. Inhloso yokugqwala. Njengoba ipulasitiki ithintana nendawo, ubulukhuni bayo abubuhle, futhi indawo esetshenziswayo akufanele ibe nezinhlayiya eziqinile, amakristalu, ukungcola, njll., ukuze kuvinjelwe i-valve ukuthi ingagugi i-core valve, ungqimba olufakwe i-fluorine lwesihlalo se-valve noma ungqimba lwe-fluorine ngesikhathi sokuvulwa nokuvalwa kwe-valve. I-Fluorine iyabhonga. Kwindawo enezinhlayiya eziqinile, amakristalu nokungcola, lapho ukhetha, i-core valve kanye nesihlalo se-valve kungakhethwa kusuka kuma-alloy amelana nokugqwala, njenge-INCONEL, i-MONEL, i-Hastelloy, njll.
2. Izinga lokushisa lendawo esetshenziswa yivalvu yebhabhathane ene-fluorine: ipulasitiki ye-fluorine esetshenziswayo yi-F46 (FEP), kanti izinga lokushisa lendawo esetshenziswayo alikwazi ukudlula i-150°C (izinga lokushisa lendawo lingafinyelela ku-150°C ngesikhathi esifushane, futhi izinga lokushisa kufanele lilawulwe ngaphakathi kwe-120°C isikhathi eside) Ngaphandle kwalokho, ulwelwesi lwe-F46 lwezingxenye zevalvu kulula ukuluthambisa nokulushintsha, okubangela ukuba ivalvu ivale ngendlela engabulali futhi ivuza kakhulu. Uma izinga lokushisa lendawo esetshenziswayo lingaphansi kwe-180℃ isikhathi esifushane futhi lingaphansi kwe-150℃ isikhathi eside, kungasetshenziswa enye i-fluoroplastic.
-PFA, kodwa i-PFA ehlanganiswe nge-fluoroplastics ibiza kakhulu kune-F46 ehlanganiswe nge-FFA.
3. Umehluko wokucindezela nokucindezela kufanele ulawulwe ngaphakathi kwebanga elivunyelwe. Uma umehluko wokucindezela nokucindezela kukhulu kakhulu, kulula ukudala umonakalo ku-seal ngesikhathi sokuvulwa nokuvalwa kwe-valve, okuzothinta ukusebenza kokuvala kwe-valve.
4. Izitayela eziningi zemidiya egqwalisayo yezimboni ngokuvamile aziyona nje uhlobo olulodwa lwe-asidi, i-alkali, nosawoti. Lokhu kwenza kube nzima ukukhetha izinto ezifanele zokubopha, okudinga ukukhethwa okuphelele kwamapharamitha afana nesilinganiso sokwakheka koketshezi, ukuhlushwa, izinga lokushisa eliphakathi, usayizi wezinhlayiya, kanye nesivinini sokugeleza kwemidiya.
5. Ivalvu yebhabhathane ene-fluorine kufanele ikhethwe kahle ngokwesilinganiso sokugeleza esidingekayo (inani le-Cv). Inani le-CV levalvu yebhabhathane ene-fluorine lincane kancane kunelevalvu yebhabhathane ejwayelekile ye-wafer kanye ne-flange butterfly. Uma ukhetha, ububanzi kanye nezinga lokuvula kwevalvu yebhabhathane ene-fluorine kufanele kubalwe ngokwesilinganiso sokugeleza esidingekayo (inani le-Cv) kanye neminye imingcele yobuchwepheshe. Uma ububanzi bevalvu bukhethiwe bukhulu kakhulu, kuzokwenza ivalvu ivuleke isikhathi eside. Ukusebenza ngaphansi kwezimo ezincane, kuhlanganiswe nokucindezela kwe-medium, kuzokwenza kalula ukuthi i-valve core kanye nenduku kuthinteke yi-medium ukuze kubangele ukuthi ivalvu idlidlize. Induku ye-valve core izophuka ngisho nangaphansi komthelela we-medium isikhathi eside. Lapho ukhetha izinhlobo ezahlukene zamavalvu ane-fluorine, abasebenzisi kufanele baqonde futhi baqonde izimo zobuchwepheshe zokusetshenziswa ngangokunokwenzeka, ukuze bakhethwe futhi basetshenziswe kahle, futhi impilo yesevisi yevalvu ingathuthukiswa. Uma kwenzeka kweqa ububanzi bezimo zobuchwepheshe zokusetshenziswa, kufanele kuphakanyiswe kumenzi, kuxoxiswane ngakho ndawonye, ​​bese kwamukelwa izindlela zokumelana ezifanele zokukuxazulula. 6. Gwema ukucindezela okungekuhle. Ivalvu ene-fluorine kufanele igweme ukusetshenziswa kokucindezela okungekuhle epayipini. Uma kukhona ukucindezela okungekuhle, ungqimba olune-fluorine engaphakathi kwevalvu luzodonswa (luvuvuke) futhi luboshwe, okuzokwenza ivalvu ivuleke futhi ivale ukungasebenzi kahle.