Isebenza kanjani i-check valve?

Hlola ama-valveingasetshenziswa futhi emigqeni ehlinzeka ngezinhlelo ezisizayo lapho ingcindezi ingakhuphuka khona ngaphezu kwengcindezi yesistimu. Ama-valve okuhlola angahlukaniswa kakhulu ngama-valve okuhlola okujikijelayo (ajikeleza ngokuya ngesikhungo samandla adonsela phansi) kanye nama-valve okuhlola okuphakamisa (ahamba eceleni kwe-axis).
Inhloso yalolu hlobo lwevalvu ukuvumela i-medium ukuthi igeleze ohlangothini olulodwa kuphela futhi ivimbele ukugeleza kolunye uhlangothi. Ngokuvamile lolu hlobo lwevalvu lusebenza ngokuzenzakalelayo. Ngaphansi kwesenzo sokucindezela koketshezi okugeleza kolunye uhlangothi, i-valve flap iyavuleka; lapho uketshezi lugeleza kolunye uhlangothi, ukucindezela koketshezi kanye ne-valve flap ezihlanganayo ye-valve flap kusebenza esihlalweni sevalvu, ngaleyo ndlela kunqamule ukugeleza.
Phakathi kwazo, i-valve yokuhlola ingeyalolu hlobo lwe-valve, oluhlanganisaivalvu yokuhlola ukujikakanye ne-lift check valve. Ama-swing check valve ane-hinge mechanism kanye ne-disc efana nomnyango ehlala ngokukhululeka ebusweni besihlalo esithambekile. Ukuze kuqinisekiswe ukuthi i-valve disc ingafinyelela indawo efanele ebusweni besihlalo se-valve njalo, i-valve disc yakhelwe ngendlela ye-hinge, ukuze i-valve disc ibe nesikhala esanele sokujikijela futhi yenze i-valve disc ixhumane ngempela futhi ngokuphelele nesihlalo se-valve. I-disc ingenziwa ngokuphelele ngensimbi, noma ifakwe isikhumba, irabha, noma izimbozo zokwenziwa, kuye ngezidingo zokusebenza. Esimweni esivulekile ngokuphelele se-swing check valve, ingcindezi yoketshezi cishe ayivimbeki, ngakho-ke ukwehla kwengcindezi kulo lonke i-valve kuncane kakhulu. I-disc ye-lift check valve itholakala ebusweni bokuvala besihlalo se-valve emzimbeni we-valve. Ngaphandle kokuthi i-valve disc ingaphakama futhi iwe ngokukhululeka, ingxenye esele ye-valve ifana ne-globe valve. Ingcindezi yoketshezi iphakamisa i-valve disc ebusweni bokuvala besihlalo se-valve, futhi ukugeleza emuva kwe-medium kubangela ukuthi i-valve disc iwele emuva esihlalweni se-valve futhi inqume ukugeleza. Ngokwemibandela yokusebenzisa, idiski ingaba ngesakhiwo sensimbi yonke, noma ingaba ngesimo sephedi yerabha noma indandatho yerabha efakwe esibambi sediski. Njengevalvu yomhlaba, ukudlula koketshezi ngevalvu yokuhlola ukuphakamisa nakho kuncane, ngakho-ke ukwehla kwengcindezi ngevalvu yokuhlola ukuphakamisa kukhulu kunokwevalvu yokuhlola ukujikeleza, futhi ukugeleza kwevalvu yokuhlola ukujikeleza kulinganiselwe.