Li-valve tsa bolo ea PVC (PolyVinyl Chloride) li sebelisoa haholo ke li-valve tsa polasetiki tse koalang.Belofo e na le bolo e feto-fetohang e nang le bore.Ka ho potoloha bolo ka kotara, bore e inline kapa perpendicular ho piping mme phallo ea buloa kapa ea thibeloa.Li-valve tsa PVC li tšoarella nako e telele ebile li theko e boima.Ho feta moo, li ka sebelisoa bakeng sa mecha ea litaba e fapaneng, ho kenyelletsa metsi, moea, lik'hemik'hale tse senyang, li-acids le metheo.Ha li bapisoa le li-valve tsa bolo ea koporo kapa tse sa hloekang, li lekantsoe bakeng sa mocheso o tlase le likhatello 'me li na le matla a tlase a mochine.Li fumaneha ka likhokahano tse fapaneng tsa liphaephe, joalo ka li-sockets tsa solvent (glue connection) kapa likhoele tsa liphaephe.Double union, kapa li-valve tsa 'nete tsa union, li na le lipheletso tse arohaneng tsa liphaephe tse khomaretsoeng 'meleng oa li-valve ka khokahanyo ea khoele.Valve e ka tlosoa habonolo bakeng sa ho nkela sebaka, ho hlahlojoa le ho hloekisa.
Tlhahiso ea PolyVinyl Chloride
PVC e emetse PolyVinyl Chloride 'me ke polymer ea maiketsetso ea boraro e sebelisoang ka ho fetisisa ka mor'a PE le PP.E hlahisoa ke karabelo ea 57% ea khase ea chlorine le 43% ea khase ea ethylene.Khase ea chlorine e tsoa ka electrolysis ea metsi a leoatle, 'me khase ea ethylene e fumanoa ka ho tšeloa ha oli e tala.Ha ho bapisoa le lipolasetiki tse ling, tlhahiso ea PVC e hloka oli e tala e fokolang haholo (PE le PP li hloka hoo e ka bang 97% ea khase ea ethylene).Chlorine le ethylene lia arabela ebe li etsa ethanedichlorine.Sena se sebetsoa ho hlahisa Vinylchlorine monomer.Sesebelisoa sena se entsoe ka polymerized ho theha PVC.Qetellong, li-additives tse ling li sebelisetsoa ho fetola thepa e kang ho thatafala le elasticity.Ka lebaka la mokhoa o batlang o le bonolo oa tlhahiso le ho fumaneha ho hoholo ha lihlahisoa tse tala, PVC ke thepa e theko e tlaase le e tsitsitseng e tsitsitseng ha e bapisoa le lipolasetiki tse ling.PVC e na le khanyetso e matla khahlanong le khanya ea letsatsi, lik'hemik'hale le oxidation e tsoang metsing.
Lintho tsa PVC
Lethathamo le ka tlase le fana ka kakaretso ea likarolo tsa bohlokoa tsa thepa:
- Bophelo bo bobebe, bo matla le bo bolelele ba tšebeletso
- E loketse ho sebelisoa hape le tšusumetso e batlang e le tlase tikolohong ha e bapisoa le lipolasetiki tse ling
- Hangata e sebelisoa bakeng sa lits'ebetso tsa bohloeki, joalo ka metsi a nooang.PVC ke thepa ea bohlokoa e sebelisoang ho boloka kapa ho fetisetsa lihlahisoa tsa lijo.
- E hanyetsana le lik'hemik'hale tse ngata, li-acids le metheo
- Boholo ba li-valve tsa bolo ea PVC ho fihlela ho DN50 li na le tekanyo e phahameng ea khatello ea PN16 (16 bar mocheso oa kamore).
PVC e na le boemo bo tlase ba ho nolofatsa le ho qhibiliha.Ka hona, ha e khothalletsoe ho sebelisa PVC bakeng sa mocheso o ka holimo ho likhato tse 60 tsa Celsius (140°F).
Lisebelisoa
Li-valve tsa PVC li sebelisoa ka matla tsamaisong ea metsi le ho nosetsa.PVC e boetse e loketse mecha ea litaba e senyang, joalo ka metsi a leoatle.Ho feta moo, thepa e hanyetsana le li-acids le metheo e mengata, litharollo tsa letsoai le li-solvents tsa organic.Lits'ebetsong tseo ho tsona ho sebelisoang lik'hemik'hale le li-acid tse senyang, hangata PVC e khethoa ka holim'a tšepe e sa hloekang.PVC e boetse e na le mathata a itseng.Phello ea bohlokoa ka ho fetisisa ke hore PVC e tloaelehileng e ke ke ea sebelisoa bakeng sa mocheso oa mecha ea litaba ka holimo ho 60 ° C (140 ° F).PVC ha e hanyetsane le li-hydrocarbon tse nkhang hamonate le tse chlorine.PVC e na le matla a tlase a mochine ho feta koporo kapa tšepe e sa hloekang, kahoo li-valve tsa PVC hangata li na le tekanyo e tlaase ea khatello (PN16 e tloaelehile bakeng sa li-valve ho fihlela ho DN50).Lethathamo la limmaraka tse tloaelehileng moo li-valve tsa PVC li sebelisoang:
- Ho nosetsa ka malapeng / litsebi
- Phekolo ea metsi
- Litšobotsi tsa metsi le liliba
- Aquariums
- Lithōle
- Matamo a ho sesa
- Ts'ebetso ea lik'hemik'hale
- Ho lokisa lijo
Nako ea poso: May-30-2020