Ivalve yebhola eyenziwe ngesandla, ivalve yebhabhathane kunye nevalve yeplagi luhlobo olunye lwesivalo. Umahluko kukuba inxalenye yokuvala yevalve yebhola yibhola, ejikelezayo kumgca ophakathi womzimba wevalve ukufezekisa ukuvula nokuvala. Ivalve yebhola isetyenziselwa ikakhulu ukusika, ukusasaza kunye nokutshintsha indlela yokuhamba kwe medium kumbhobho. Ivalve yebhola eneziqwenga ezintathu luhlobo olutsha lwevalve olusetyenziswe ngokubanzi kwiminyaka yakutshanje. Olu hlobo lwevalve kufuneka lufakwe ngokubanzi ngokuthe tye kumbhobho.
Isihlalo sevalve ye-NSW yenkampani yevalve yebhola edadayo inomsebenzi olungileyo wokutywina. Umsesane wokutywina wevalve yebhola yenziwe kakhulu ngezinto ezilastiki ezifana ne-PTFE (RPTFE, NYLON, DEVLON, PEEK njl.). Isakhiwo sokutywinwa esithambileyo silula ukuqinisekisa ukutywinwa, kwaye njengoko uxinzelelo oluphakathi lukhula, amandla okutywinwa kwevalve yebhola ayanda. I-stem seal inokuthenjwa. Xa ivalve yebhola ivuliwe kwaye ivaliwe, isiqu sevalve sijikeleza kuphela kwaye asihambi phezulu nasezantsi. I-valve stem packing seal ayilula ukuba yonakaliswe. Amandla okutywina kwe-valve stem reverse seal ayanda ngokunyuka koxinzelelo oluphakathi. Ngenxa yokuba i-PTFE kunye nezinye izinto zineepropati ezilungileyo zokuzithambisa, umonakalo we-friction kunye nebhola yevalve yebhola incinci, kwaye ivalve yebhola inobomi obude benkonzo. Imodeli yokusetyenziswa inokuxhotyiswa nge-pneumatic, umbane, i-hydraulic kunye nezinye iindlela zokuqhuba ukuze uqaphele ulawulo olude kunye nokusebenza okuzenzekelayo. Ishaneli yevalve yebhola igudile kwaye inokuthutha i-viscous fluid, i-slurries kunye namasuntswana aqinileyo.
Ivalve yebhola edadayo luhlobo oluthile lwevalve eyaphuma ngeminyaka yoo-1950. Kwisiqingatha senkulungwane, ivalve yebhola iye yaphuhla yaba ludidi lwevalvu enkulu. Ivalve yebhola isetyenziswa ikakhulu ukunqumla okanye ukudibanisa i-medium, kwaye ingasetyenziselwa ukulungiswa kunye nokulawula ulwelo. I-valve ye-Segment yebhola (i-V notch ball valve) inokwenza uhlengahlengiso oluchanekileyo kunye nokulawula ukuhamba, kwaye i-valve yebhola yeendlela ezintathu isetyenziselwa ukusabalalisa i-medium kunye nokutshintsha i-flow direction of medium. Iivalvu zebhola ezenziwe ngezandla zithiywa ubukhulu becala ngokusekwe kwindlela yokuqhuba yevalve yebhola ngokujika ivili lesandla okanye isiphatho.
Ixesha lokuposa: Nov-20-2020