Isingeniso ku-Check valves

Ama-valve okuhlola ama-automatic valves avuleka ngokugeleza okuya phambili futhi avale ngokugeleza okubuyela emuva.

Ukucindezela koketshezi oludlula ohlelweni kuvula i-valve, kuyilapho ukuguqulwa kokugeleza kuzovala i-valve. Ukusebenza okuqondile kuzohluka kuye ngohlobo lwe-Check valve mechanism. Izinhlobo ezivame kakhulu zamavalvu okuhlola ukushwibeka, ukuphakamisa (ipiston nebhola), uvemvane, ima kanye nediski etshekisayo.

Izinhlobo zama-valve okuhlola

I-Swing Check valve
I-vasic swing Check valve iqukethe umzimba wevalvu, ibhonethi, nediski exhunywe kuhinji. Idiski isuke isuka ku-valve-seat ukuze ivumele ukugeleza iye phambili, futhi ibuyela ku-valve-seat lapho ukugeleza komfula kumisiwe, ukuvimbela ukugeleza emuva.

I-disc ohlotsheni lokushwibeka Hlola i-valve ayiqondiswanga njengoba ivuleka noma ivaleka ngokugcwele. Kunemiklamo eminingi yediski nezihlalo etholakalayo, ukuze kuhlangatshezwane nezidingo zezinhlelo zokusebenza ezahlukene. I-valve ivumela ukugeleza okugcwele, okungavinjelwe futhi ivale ngokuzenzakalelayo njengoba ukucindezela kuncipha. Lawa ma-valve avalwa ngokuphelele lapho ukugeleza kufinyelela ku-zero, ukuze kuvinjelwe ukugeleza emuva. I-turbulence kanye nokwehla kwengcindezi ku-valve kuphansi kakhulu.

Lift Check valve
Idizayini yesihlalo se-lift-Check valve ifana ne-Globe valve. I-disc ngokuvamile isesimweni se-piston noma ibhola.

I-Lift Check valves ifaneleka ngokukhethekile isevisi yokucindezela okukhulu lapho isivinini sokugeleza siphezulu. Kuma-lift Hlola ama-valve, idiski iqondiswa kahle futhi ingena kahle kudeshibhothi. Amavalvu okuhlola afanele ukufakwa emigqeni yamapayipi evundlile noma eqondile ageleza phezulu.

Ukugeleza ukuphakamisa Hlola ama-valve kufanele ahlale ngezansi kwesihlalo. Njengoba ukugeleza kungena, i-piston noma ibhola liphakanyiswa ngaphakathi kweziqondiso ukusuka esihlalweni ngokucindezela kokugeleza okuya phezulu. Uma ukugeleza kuma noma kuhlehla, ipiston noma ibhola liphoqelelwa esihlalweni sevalvu kukho kokubili ukugeleza okusemuva namandla adonsela phansi.