Ungakhetha kanjani phakathi kwe-concentric, i-double eccentric kanye ne-valve butterfly eccentric kathathu?

Umehluko esakhiweni se-valve uvemvane uhlukanisa izinhlobo ezine zamavalve uvemvane, okuyilezi:i-valve ye-butterfly egxilile, i-valve eyodwa ye-butterfly eccentric,i-valve ye-butterfly ephindwe kabilikanye nevalve yevemvane ene-eccentric kathathu.Uyini umqondo walokhu kugqama?Unganquma kanjani ukuthi ungasebenzisa nini i-valve ye-butterfly egxilile, lapho usebenzisa i-valve butterfly eyodwa eccentric, lapho usebenzisa i-valve butterfly eccentric kabili kanye ne-valve ye-butterfly eccentric kathathu?Abasebenzisi abaningi abacaci kahle.Masifunde ndawonye.

Ama-valve evemvane agxilile, ama-valve evemvane e-eccentric eyodwa, aphindwe kabiliama-eccentric butterfly valveskanye nama-valve evemvane eccentric kathathu empeleni abonisa inqubo yokuvula nokuvala ngomzamo omncane futhi omncane kanye nokuguga kancane kancane endaweni yokuvala.Ngokusetha indawo ye-shaft ejikelezayo yepuleti ye-butterfly valve, ukuvala nokuvula i-valve yovemvane kungashintshwa.Ngaphansi kwezimo ezifanayo, i-torque ye-valve lapho ivula ikhula ngokulandelana.Lapho i-valve ivuliwe, i-engeli yokuzungeza edingekayo ukuze ipuleti le-valve lihlukane nophawu lincane ngokulandelana.

Isici sesakhiwo se-valve butterfly egxilile ukuthi isikhungo se-shaft yesiqu se-valve, isikhungo se-butterfly plate kanye nenkaba yomzimba we-valve kusendaweni efanayo.Ngokuvamile, uma ama-valve ovemvane agxilile angasetshenziswa, kufanele asetshenziswe ngangokunokwenzeka.Ngenxa yokuthi uhlobo lwe-concentric aludingi ukusebenza kokuvala okuphezulu ngokuya ngesakhiwo noma ukusebenza, umkhiqizo ojwayelekile.Ukuze unqobe ukukhishwa, ukuklwebha, nokuqinisekisa ukusebenza kokuvala, isihlalo sevalvu yevalve uvemvane egxilile ngokuyisisekelo senziwe ngerabha noma i-PTFE nezinye izinto ezinwebekayo, okuyivalve uvemvane evala uphawu.Lokhu kwenza ukusetshenziswa kwama-valve evemvane agxile ngaphansi kwemikhawulo yokushisa.Ukuze kuxazululwe inkinga ye-extrusion yepuleti le-butterfly kanye nesihlalo se-valve, kwasungulwa i-valve ye-butterfly eyodwa ye-eccentric.Isici sayo sesakhiwo ukuthi isikhungo se-shaft sesiqu se-valve siyachezuka phakathi nendawo yepuleti uvemvane.

I-valve yevemvane eyi-eccentric ephindwe kabili iyona esetshenziswa kakhulu.Isici sayo sesakhiwo ukuthi isikhungo se-shaft yesiqu se-valve siyachezuka enkabeni yepuleti lovemvane kanye namaphakathi nomzimba we-valve.Ichezuka ezindaweni ezimbili ezimaphakathi, ngakho ibizwa nge-double eccentric butterfly valve.Eziningi zazo zivaliwe ngomugqa.Lapho indawo yokuvala ivaliwe, kuba khona ukungqubuzana phakathi kwepuleti le-disc nesihlalo se-valve, futhi umphumela wokuvala muhle kakhulu.Inezici zendawo encane kanye nokucindezela okunamandla.Ngemva kokuvulwa kwe-valve, ipuleti le-butterfly lingakwazi ukuhlukana ngokushesha nesihlalo se-valve, okuqeda kakhulu ukukhishwa ngokweqile okungadingekile nokukhuhla phakathi kwepuleti nesihlalo, kunciphisa ukuvuleka kwebanga lokumelana, ukuguga, nokuthuthukisa impilo yesevisi yesihlalo se-valve.

I-valve uvemvane oluyi-eccentric kathathu lunokugqama kwesithathu ngesisekelo se-valve uvemvane oluyi-eccentric kabili.Ukuma kwepheya yokubeka uphawu akuyona ikhoni eqondile, kodwa i-oblique cone.Iningi lazo lingamandla amabanga amafushane kanye ne-surface seal.I-stem shaft yevalve uvemvane eccentric kathathu iyisakhiwo se-shaft enezigaba ezintathu.Izingxenye ezimbili ze-shaft zesiqu se-valve ye-shaft yezigaba ezintathu zigxile, futhi umugqa ophakathi nendawo we-shaft yesigaba esimaphakathi uchezuka eksisi yeziphetho ezimbili ngebanga elimaphakathi, futhi ipuleti levemvane lifakwe phakathi.kushaft.Isakhiwo esinjalo se-eccentric senza ipuleti levemvane libe umumo ophindwe kabili we-eccentric lapho livuleke ngokugcwele, kanye nesimo esisodwa se-eccentric lapho ipuleti levemvane liphendukela endaweni evaliwe.Ngenxa yomphumela we-eccentric shaft, uma sekusondele ukuvala, ipuleti levemvane lihamba ibanga liye endaweni yekhoni yokuvala yesihlalo se-valve, futhi ipuleti uvemvane lifana nendawo yokuvala yesihlalo se-valve ukuze kuzuzwe ukusebenza okuthembekile kokuvala.Kwenza ukungqubuzana kokuthi uphawu oluqinile lunophawu olubi, futhi uphawu oluthambile lunomphumela omuhle wokuvala kodwa alumelani nokushisa okuphezulu.

Lapho usebenzisa i-valve ye-butterfly egxilile, lapho ukhetha i-valve ye-butterfly e-eccentric ephindwe kabili noma i-valve ye-butterfly eccentric kathathu, ngokuyinhloko incike ezimweni zokusebenza kanye nesabelomali.