Ngokwezixhobo zokutywina, ivalve yeglobhu inokwahlulwahlulwa ibe ziindidi ezimbini: ukutywina okuthambileyo ukutywina iglowubhu yentsimbi kunye nesinyithi esitywinayo sevalve yeglobhu; Ngokwendlela ekwakhiwe ngayo idiski ezohlulwe zangamacandelo amabini: ivalve yeglobhu esekwe ngokulinganayo kunye nediski engalinganiyo yevali yeglobhu; Ngokwendlela flow ijelo channel zingahlulwa-hlulwa ube DC channel, Z channel, Angle channel, DC ijelo kunye ijelo ezintathu, njl.
Itywina vana ityhubhu
Kwivalve yeglobhu, ukuthintela amatywina athambileyo ukuba angonakaliswa bubushushu, kufakelwe isixhobo esikhanyayo phambi kwetywina elithambileyo, elenziwe lishiti elinomphezulu omkhulu oqaqambileyo. Kwimeko yenkonzo yeoksijini, olu luyilo alwanelanga ukuthintela umlilo wamatywina athambileyo. Ukuthintela ukungaphumeleli kwale valve, indawo yokungena engaphandle kwesihlalo sevalve kufuneka yandiswe ukuze isiphelo sendlela yokungena yenze ipokotho ukuze irhasi eshushu iqokelele kude kwitywina. Kuyilo lomphezulu wokutywina othambileyo, kubalulekile ukuba uqwalasele ukuthintela into yokutywina ethambileyo ukuba ingakhutshwa okanye ibangelwe kukufuduswa koxinzelelo oluphakathi.
Izinto zokutywina ezithambileyo zibandakanya iidiski ezivalwe ngerabha, i-PTFE (okanye ezinye iiplastikhi) izihlalo okanye iidiski zentsimbi ezixhonywe ngezinto ezingezizo ezesinyithi, kunye nolwakhiwo lwediski eyomeleleyo kunye ethambileyo yokutywina kabini. Olu hlobo lwevalufa yetywina ethambileyo luhlala lusetyenziswa kwimithombo yeendaba yomphunga kunye negesi, ngakumbi kuxinzelelo olusezantsi lwevaluva zokugcina itshe. Amandla okuvala afunwa yivelufa yetywina ethambileyo incinci kakhulu, kwaye i-disc yesitywina ethambileyo kulula ukuba itshintshwe. Ngethuba nje ukuba indawo yokutywinwa kwesihlalo se-valve ayonakalanga, ukutshintshwa kwesitywina esithambileyo sediski yevalve kungekudala kuya kubuyisela ukusebenza kwevalve.
1. Idiski egqunywe ngerabha ethambileyo yesivingco sevalvu
Nangona umzimba wevalve wamkela ubume obumilise u-T, kodwa kumjelo we-valve yomzimba we-inlet wecala lokuphosa icala kunye nolwalathiso olugudileyo lwesihlalo se-45 °, esenza ukuba ijelo levalve lilungelelane, ukufezekisa umphumo ofanayo nomzimba we-valve ohamba ngqo, ophakathi umthamo wokuhamba ulungile; Kwaye ngenxa yokusetyenziswa kwetywina elithambileyo lerabha, ukusebenza kokutywina kwevalve kulungile.
Igobolondo le-valve lenziwe nge-iron cast kwaye idiski ye-valve igqunywe nge-EPDM.
Ivalve inezi mpawu zilandelayo:
Akukho sondlo;
ResistanceLow flow ukumelana, fluidity elungileyo;
Umsebenzi wokuhambisa;
Uyilo lwentonga emnyama (ukunyusa intambo yangaphakathi);
Imisonto yesiqu kumzimba wevalve ngaphandle;
RomKusuka kwiziko le-valve stem stem;
I-⑦EDD itywina leentsimbi;
Ukhuseleko uphawu ezimbini;
Isigqubuthelo sokugquma sinomsebenzi wokulwa nokuxinana ngaxeshanye;
Umzimba wevalve onokubakho unokufakwa ngaphandle ngokupheleleyo, ungonga umbane.
Ivelufa ubukhulu becala isetyenziselwa inkqubo yamanzi ashushu ayi-10 ~ 120C, ukufudumeza
Inkqubo kunye nenkqubo yomoya.
2. Ukutywinwa kokutywina okuthambileyo kokuvala ukutywina
Ivalvu yentsimbi ethambileyo yokutywinwa kwe-non-metallic ifakwe i-polytetrafluoroethylene kunye nezinye iipolymers kwidiski, ikakhulu esetyenziswa kwinkqubo yombhobho wegesi kwisikhululo segesi se-petroleum.
Ixesha lokuposa: Mar-24-2021