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.
Lapha umkhiqizi we-RXVAL wethula umehluko phakathi kwe-Swing Check Valve kanye ne-Lift Check Valve.
I-Swing Check Valve
I-vasic swing Hlola i-valve iqukethe umzimba we-valve, ibhonethi, nediski exhunywe kuhinji.I-disk isuke isuka ku-valve-seat ukuze ivumele ukugeleza ukuya phambili, futhi ibuyela ku-valve-seat lapho ukugeleza komfula kumisiwe, ukuvimbela ukugeleza emuva.
I-disc ohlotsheni lokushwibeka Hlola i-valve ayiholwanga 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 nokwehla kwengcindezi ku-valve kuphansi kakhulu.
I-valve yokuhlola i-Swing, swayingisa hlola i-valve esihlalweni se-valve ye-disc ezungeze i-axis yesiteshi ukuze ijikeleze, ngenxa yokuthi ishaneli ye-valve ibe yindlela elula, ukumelana nokugeleza kunokuhlola i-valve encane yokuphakamisa, efanelekayo izikhathi ezinkulu zokugeleza okuphansi futhi akukho ukugeleza okushintsha njalo. , kodwa akufanele isetshenziselwe ukugeleza kokushaya, ukusebenza kokuvala kungaphansi kokuphakamisa.
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 Check valves, 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 liphoqeleka ukuba lingene esihlalweni sevalvu ngakho kokubili ukugeleza kwangemuva namandla adonsela phansi.
I-disc ingasetshenziswa ku-valve yokuhlola i-bore encane yokucindezela okukhulu.Umzimba we-valve we-valve yokuhlola i-lift ufana ne-valve yokunqamula (engasetshenziswa ne-valve yokumisa), ngakho-ke ine-coefficient enkulu yokumelana noketshezi.Isakhiwo sifana ne-valve yokusika, umzimba we-valve kanye ne-disc kuyafana ne-valve yokusika.Ingxenye engezansi ye-valve engaphezulu kanye nomkhono womhlahlandlela wokucubungula ikhava ye-valve, i-valve ku-valve phakamisa umhlahlandlela wamahhala ukukhanya okulula okushayelwa, lapho i-medium downstream, i-valve idonsa ivuleka abezindaba, lapho abezindaba beyeka ukugeleza, i-valve ukuzimela okuqondile esihlalweni, ukuvimbela abezindaba ukuthi bangabi nomthelela okhuphukayo.
I-valve yokuhlola i-lift eqondile, isiqondiso sokungena nokuphuma kwe-medium sibhekene nesiqondiso sesihlalo se-valve.
I-valve yokuhlola i-vertical lift inesiqondiso esifanayo nesesihlalo se-valve kanye nesiqondiso se-inlet ne-outlet ye-valve, futhi ukumelana nokugeleza kuncane kunokwe-valve eqondile.
Isikhathi sokuthumela: Apr-29-2022