Ho ea ka thepa ea ho tiisa holim'a metsi,li-valve tsa hekee ka aroloa ka mefuta e 'meli: tiiso e thata le tiiso e bonolo.Phapang ke efe pakeng tsa valve e bonolo ea tiiso le valve ea tiiso e thata:
Valve e tiileng ea heke: Lisebelisoa tsa ho tiisa holim'a libaka tse peli tsa ho tiisa ke lisebelisoa tsa tšepe, tse bitsoang "hard seal".Ho hanyetsa mocheso o phahameng, ho hanyetsa ho roala, thepa e ntle ea mechine e kang: tšepe + tšepe;tšepe + koporo;tshepe
+ Graphite;tšepe + tšepe ea motsoako.Lisebelisoa tsa ho tiisa tse sebelisoang ka tloaelo ke: 13Cr stainless steel, hard-face alloy materials, sprayed tungsten carbide, joalo-joalo. Sebaka sa ho tiisa se batla se tiisitsoe hampe.
Soft seal heke valve: para ea tiiso e entsoe ka lisebelisoa tsa tšepe ka lehlakoreng le leng le lisebelisoa tse se nang tšepe ka lehlakoreng le leng, tse bitsoang "soft seal".Ts'ebetso ea ho tiisa ea mofuta ona oa tiiso e ntle, empa ha e hanyetsane le mocheso o phahameng, ho bonolo ho apara, ebile e na le thepa e mpe ea mechine.Joalo ka: tšepe + rabara;tšepe + PTFE, joalo-joalo Ho bolela hore lehlakore le leng la para ea tiiso le entsoe ka thepa e nang le boima bo batlang bo le tlase.Ka kakaretso, setulo sa tiiso se bonolo se entsoe ka lisebelisoa tse se nang tšepe tse nang le matla a itseng, boima le ho hanyetsa mocheso.E na le ts'ebetso e ntle ea ho tiisa 'me e ka fihlella ho lutla ha zero, empa e na le bophelo bo bolelele.Ha ho bapisoa le boemo bo bobe ba ho ikamahanya le mocheso, tiiso e thata e entsoe ka tšepe, 'me ts'ebetso ea ho tiisa e batla e fokola, le hoja bahlahisi ba bang ba bolela hore e ka finyella ho lutla ha zero.Sepheo sa ho qaptjoa ha valve e bonolo ea ho tiisa heke: ho rarolla bothata ba setulo sa li-valve le sebaka se tiisitsoeng sa poleiti ea valve e senyehileng kapa e holofetse, poleiti ea valve e ka khona ho lefella sekoaelo se thata sa khatello le khatello ea ho leka-lekana ka mokhoa o itekanetseng. valve ea ho tiisa heke e bonolo, 'me u rarolle bothata ba thepa ea ho tiisa e bonolo e senyehileng ka ho ferekana Bothata ba sebaka sa ho tiisa, hobane lesela la ho tiisa la heke le ka nkeloa sebaka, le eketsa haholo tšebeliso ea valve.
Mefuta e sebetsang ea valve e bonolo ea heke: bophara (p50-p400mm, khatello ea 2.5-4.0MPa, lino tse fapaneng tsa mocheso o tloaelehileng o ka tlase ho 200 ℃).
Tiiso e bonolo ha e khone ho fihlela litlhoko tsa ts'ebetso bakeng sa lisebelisoa tse ling tse senyang, 'me tiiso e thata e ka e rarolla!
Mefuta ena e 'meli ea litiiso e ka tlatsana.Mabapi le ho tiisa, tiiso e bonolo e batla e le ntle, empa hona joale ho tiea ha tiiso e thata ho ka boela ha finyella litlhoko tse lumellanang le tsona!Molemo oa tiiso e bonolo ke ts'ebetso e ntle ea ho tiisa, empa bothata ke hore ho bonolo ho tsofala, ho apara, le ho phela bophelo bo khutšoanyane ba tšebeletso.Tiiso e thata e na le bophelo bo bolelele ba ts'ebeletso, empa ho tiea ho batla ho le mpe ho feta tiiso e bonolo.