Ukuhlukaniswa kanye nokusetshenziswa kwama-valve okuhlola
I-Check valve ibhekisela ezingxenyeni zokuvula nokuvala ze-valve eyindilinga futhi ithembele esisindweni sayo kanye nokucindezela kwemidiya ukuze ikhiqize isenzo sokuvimba ukugeleza okuphakathi kwe-valve. I-Check valve iyi-valve ezenzakalelayo, eyaziwa nangokuthi i-check valve, i-one-way valve, i-non-return valve noma i-isolation valve.
Ukunyakaza kwe-Flap kuhlukaniswe ngezigaba ezimbili:ivalvu yokuhlola ukuphakamafuthiivalvu yokuhlola ukujika. I-lift check valve kanye nesakhiwo se-globe valve kuyafana, kuphela ukuntuleka kwe-valve stem yokushayela i-valve flap. I-medium evela ohlangothini lokungena (ohlangothini olungezansi), kusukela ohlangothini lokukhipha (ohlangothini oluphezulu) ukuphuma. Lapho ingcindezi yokungena inkulu kunesisindo se-valve flap kanye nokumelana kwayo nokugeleza kanye nalapho i-valve ivuliwe. Ngokuphambene nalokho, i-valve ivaliwe lapho i-medium igeleza emuva. I-swing check valve inomphetho futhi ingajikeleza i-axis ye-valve flap, isimiso sokusebenza sifana ne-lift check valve. Ama-check valve avame ukusetshenziswa njenge-valve engezansi yedivayisi yokupompa, engavimbela ukugeleza kwamanzi ngemuva. Ama-check valve nama-globe valve asetshenziswa ngokuhlanganiswa, angadlala indima yokuhlukanisa ephephile. Okubi ukumelana okuphezulu kanye nokuvalwa okubi lapho kuvaliwe.
Okokuqala, i-lift check valve iqukethe izinhlobo ezimbili eziqondile nezivundlile.
Ukuma komzimba wevalvu yevalvu yokuhlola ukuphakama kufana nokwevalvu yomhlaba, ngakho-ke inokumelana okukhulu koketshezi. I-valve flap ishelela emgqeni ophakathi oqondile womzimba wevalvu. Lapho i-medium igeleza, i-valve flap ivulwa ngokusunduza okuphakathi, futhi lapho i-medium iyeka ukugeleza, i-valve flap ifika esihlalweni sevalvu ngokuzilenga.
Ivalvu yokuhlola ukuphakama okuqondile. Isiqondiso sesiteshi sokungena esimaphakathi nesokuphuma kanye nesiqondiso sesiteshi sesihlalo sevalvu kuyafana, ukumelana kokugeleza kuncane kunohlobo oluqondile. Ivalvu yokuhlola ukuphakama okuqondile ifakwe epayipini eliqondile.I-valve yokuhlola yokuphakamisa ingafakwa kuphela epayipini elivundlile. Inqunyelwe yizidingo zokufaka, evame ukusetshenziswa ngezikhathi ezincane zobubanzi DN <50.
Okwesibili, Idiski yevalvu yokuhlola i-swing isesimweni esiyindilinga futhi ijikeleza i-axis yesiteshi sesihlalo sevalvu.
Ngenxa yesiteshi esihlelekile ngaphakathi kwevalvu, ukumelana kokugeleza kuncane kunokwevalvu yokuhlola ukuphakama. Ifanele amapayipi amancane naphakathi nendawo, anengcindezi ephansi, kanye nobubanzi obukhulu (izinga lokugeleza eliphansi kanye nezimo zobubanzi obukhulu lapho ukugeleza kungashintshi njalo). Ukusebenza kokuvala akukuhle njengohlobo lokuphakamisa.
Ama-valve okuhlola i-swing ahlukaniswe ngezinhlobo ezintathu: i-single disc, i-double disc, kanye ne-multi disc. Lezi zinhlobo ezintathu zihlukaniswa kakhulu ngokwe-diameter ye-valve, ukuze kuvinjelwe ukushaqeka kwe-hydraulic lapho i-medium iyeka ukugeleza noma igeleza emuva. Ama-valve okuhlola i-single disc swing ngokuvamile afaneleka ukusetshenziswa kwe-medium caliber. Uma usebenzisa i-single disc swing check valve yamapayipi amakhulu, kungcono ukusebenzisa i-valve yokuhlola ukuvala okuhamba kancane enganciphisa ingcindezi ye-hammer yamanzi ukuze kuncishiswe ingcindezi ye-hammer yamanzi. Ama-valve okuhlola i-double disc swing afanele amapayipi amakhulu naphakathi. I-valve yokuhlola i-double disc swing enesakhiwo esincane nesisindo esincane iyi-valve yokuhlola ethuthuka ngokushesha; Ama-valve okuhlola i-multi disc swing afanele amapayipi amakhulu.Indawo yokufaka ivalvu yokuhlola i-swing ayinqunyelwe, futhi ingafakwa kumapayipi avundlile, aqondile, noma athambekele.
Okwesithathu, i-butterfly check valve: uhlobo oluqondile.
Isakhiwo sevalvu yokuhlola i-butterfly sifana nevalvu ye-butterfly. Isakhiwo sayo silula, sincane ukumelana nokugeleza, umfutho wesando samanzi nawo mncane. I-valve flap ijikeleza iphini esihlalweni sevalvu sevalvu yokuhlola. Ivalvu yokuhlola uhlobo lwediski inesakhiwo esilula, ingafakwa kuphela epayipini elivundlile, ukuvala akukuhle.
Okwesine, ivalvu yokuhlola i-diaphragm: kunezinhlobo ezahlukene zesakhiwo, zonke zisebenzisa i-diaphragm njengezingxenye zokuvula nokuvala.
Ngenxa yokusebenza kwayo kwesando samanzi, isakhiwo esilula, izindleko eziphansi, eminyakeni yamuva nje ithuthuke ngokushesha, i-valve yokuhlola i-diaphragm isetshenziswa kabanzi. Kodwa ukusetshenziswa kwe-diaphragm check valve lokushisa kanye nengcindezi yimikhawulo yezinto ze-diaphragm.I-valve yokuhlola i-diaphragm ifaneleka kalula ekukhiqizeni umthelela wamanzi epayipini, i-diaphragm ingaba yinhle kakhulu ekususeni i-medium ngokumelene nokugeleza kwamanzi okubangelwa umthelela, ngokuvamile isetshenziswa epayipini lokushisa elingaphansi kwengcindezi, ikakhulukazi efanelekile kumapayipi amanzi, izinga lokushisa elijwayelekile lokusebenza le-medium ku--12 - 120 ℃ phakathi kwengcindezi yokusebenza engu-<1.6MPa, kodwa i-valve yokuhlola i-diaphragm ingenziwa ukuze kufezwe i-calibre enkulu, inani eliphezulu lingafinyelelwa ku-DN 2000mm noma ngaphezulu! Kodwa-ke, i-valve yokuhlola i-diaphragm ingaba yi-calibre enkulu, i-DN ingafinyelela ku-2000mm noma ngaphezulu.
