Ivalvu yeplagi yivalvu ejikelezayo efana nelungu lokuvala okanye iplunger. Ngokujikeleza ii-degrees ezingama-90, i-channel port kwiplagi yevalvu iyafana okanye yahlulwe kwi-channel port emzimbeni wevalvu, ukuze kuvuleke okanye kuvalwe ivalvu.
Imilo yeplagi yevalvu yeplagi inokuba yi-cylindrical okanye i-conical. Kwiiplagi zevalvu ze-cylindrical, iipaseji zihlala zi-rectangular; kwiiplagi zevalvu ze-conical, iipaseji ze-trapezoidal. Ezi milo zenza ulwakhiwo lwevalvu yeplagi lube lukhanyiso, kodwa kwangaxeshanye, ikwavelisa ilahleko ethile. Iivalvu zeplagi zifanelekile ngakumbi ekuvaleni nasekudibaniseni imidiya kunye nokuphambuka, kodwa kuxhomekeke kuhlobo lwesicelo kunye nokumelana nokukhukuliseka komphezulu wokutywina, zingasetyenziselwa ukubhoboza. Jika iplagi ngokwewotshi ukuze wenze umjelo uhambelane nombhobho ukuze uvuleke, kwaye ujike iplagi ngama-90 degrees ngokuchasene newotshi ukuze wenze umjelo ujikeleze kumbhobho ukuze uvale.
Iindidi zeevalvu zeplagi zahlulwe kakhulu kwezi ndidi zilandelayo:
1. Ivalvu yeplagi eqinisiweyo
Iivalvu zeplagi eziqinileyo zihlala zisetyenziswa kwimibhobho ethe tye enoxinzelelo oluphantsi. Ukusebenza kokutywina kuxhomekeke ngokupheleleyo ekulinganeni kweplagi kunye nomzimba weplagi. Ukucinezelwa komphezulu wokutywina kufezekiswa ngokuqinisa i-nut esezantsi. Ngokuqhelekileyo isetyenziswa kwi-PN≤0.6Mpa.
2. Ukupakisha ivalvu yeplagi
Ivalvu yeplagi epakishiweyo yenzelwe ukufezekisa ukutywinwa komzimba weplagi kunye neplagi ngokucinezela ukupakishwa. Ngenxa yokupakishwa, ukusebenza kokutywinwa kungcono. Ngokwesiqhelo olu hlobo lwevalvu yeplagi lune-gland yokupakisha, kwaye iplagi ayidingi kuphuma emzimbeni wevalvu, ngaloo ndlela kunciphisa indlela yokuvuza kwesixhobo sokusebenza. Olu hlobo lwevalvu yeplagi lusetyenziswa kakhulu kuxinzelelo lwe-PN≤1Mpa.
3. Ivalvu yeplagi ezivala ngokwayo
Ivalvu yeplagi ezivala ngokwayo iqinisekisa ukuba itywina lokucinezela phakathi kweplagi kunye nomzimba weplagi liphuma kuxinzelelo lwesixhobo ngokwaso. Isiphelo esincinci seplagi siphuma phezulu emzimbeni, kwaye isixhobo singena kwisiphelo esikhulu seplagi ngomngxuma omncinci kwindawo yokungena, kwaye isixhobo sicinezelwe phezulu. Esi sakhiwo sisetyenziswa ngokubanzi kwimidiya yomoya.
4. Ivalvu yeplagi evalwe ngeoyile
Kwiminyaka yakutshanje, uluhlu lokusetyenziswa kweevalvu zeplagi luye lwandiswa rhoqo, kwaye iivalvu zeplagi ezitywinwe ngeoyile ezine-lubrication enyanzelisiweyo ziye zavela. Ngenxa ye-lubrication enyanzelisiweyo, ifilimu yeoyile yenziwa phakathi komphezulu wokuvala weplagi kunye nomzimba weplagi. Ngale ndlela, ukusebenza kokuvala kungcono, ukuvulwa nokuvalwa kusindisa abasebenzi, kwaye umphezulu wokuvala uyathintelwa ekonakalisweni. Kwezinye iimeko, ngenxa yezinto ezahlukeneyo kunye notshintsho kwicandelo elinqamlezileyo, ukwandiswa okwahlukileyo kuya kwenzeka ngokungenakuphepheka, okuya kubangela ukuguquka okuthile. Kufuneka kuqatshelwe ukuba xa amasango amabini ekhululekile ukwanda nokuncitshiswa, intwasahlobo nayo kufuneka ikhule kwaye incitshiswe nayo.
Ixesha lokuthumela: Disemba-22-2022