Iivalve ezinemigca yinxalenye ebalulekileyo kuyo nayiphi na inkqubo yoshishino ebandakanya ukuphathwa kwemithombo yeendaba ezonakalisayo okanye eyothusayo.Yenzelwe ukuxhathisa imiphumo eyingozi yezinto ezinjalo kunye nokuqinisekisa ukusebenza kakuhle.Kweli nqaku, siza kuphonononga ukubaluleka kweevalve ezinemigca, izicelo zazo, kunye neenzuzo ababonelela ngazo.
Ivalve enemigca ivelufa enomgca wangaphakathi owenziwe ngezinto ezifana ne-PTFE (polytetrafluoroethylene) okanye iPFA (perfluoroalkoxy).Ezi liners zingasebenzi ngokwekhemikhali kwaye zinika ukuxhathisa okugqwesileyo kuluhlu olubanzi lweekhemikhali ezonakalisayo, ezibandakanya iiasidi, iialkali, izinyibilikisi, kunye nobushushu obuphezulu.
Esinye sezicelo eziphambili zeevalvu ezinemigca kushishino lweekhemikhali.Izityalo zemichiza zibamba izinto ezisebenza kakhulu ezinokonakalisa imathiriyeli yevalvu yemveli, ibangele ukuvuza, ukungasebenzi kakuhle, kunye neemeko ezinobungozi.Iivalve ezinemigca zineentsimbi ezinganyangekiyo kwi-corrosion eziqinisekisa ukuthembeka kwenkqubo kunye nokuthintela nakuphi na ukusabela okungafunekiyo phakathi kwemidiya kunye nevalve.
Ngokukwanjalo, iivalve ezinemigca zisetyenziswa ngokubanzi kwishishini lamayeza, apho eyona nto ibaluleke kakhulu ukucoceka kunye nobunyumba benkqubo.Ilayini esetyenziswa kwezi zivalo ayipheleli nje ekuxhathiseni imichiza edlayo kodwa ikwanendawo egudileyo eyenza kube lula ukuyicoca nokubulala iintsholongwane.Oku kuthintela nakuphi na ukungcoliseka okanye ukosuleleka, kuqinisekisa ukhuseleko kunye nomgangatho wamayeza.
Ishishini lemigodi likwathembele kakhulu kwiivalvu ezinemigca ngenxa yobume boburharha bezinto ezibandakanyekayo.Imisebenzi yemigodi idla ngokuphatha uludaka, oluyingxubevange yamasuntswana aqinileyo axhonywe kulwelo, nto leyo enokubangela ukuguga kakhulu kwiivalvu.Iivalve ezinemigca ezineentsimbi ezixhathisayo zenzelwe ngokukodwa ukuxhathisa imiphumo enobundlobongela yaloo media, ukwandisa ubomi benkonzo yevalve kunye nokunciphisa ixesha lokunciphisa ukugcinwa okanye ukutshintshwa.
Amanye amashishini axhamla kwiivalvu ezinemigca aquka i-oyile negesi, i-petrochemicals, i-pulp nephepha, ukucocwa kwamanzi amdaka kunye nokuveliswa kwamandla.La mashishini kufuneka ajongane neendaba ezitshabalalisayo, uxinzelelo oluphezulu kunye namaqondo okushisa aphezulu, zonke ezinokuthi zilawuleke ngokufanelekileyo ngokusetyenziswa kweevalve ezinemigca.
Ukongeza, iivalve ezinemigca zibonelela ngeengenelo ezininzi ngaphezu kweevalve ezingafakwanga.Ukongeza kokuxhathisa kwabo kweekhemikhali okugqwesileyo, bane-coefficient ephantsi ye-friction, ekhokelela ekunciphiseni uxinzelelo oluncinci kwivalve.Oku konga amandla kwaye kwandisa ukusebenza kwenkqubo iyonke.Iivalve ezinemigca nazo ziyaziwa ngokuba namandla okutywina okuphezulu, ukunciphisa ukuvuza kunye nokuqinisekisa ukuvala okuqinileyo.
Isishwankathelo, iivalve ezinemigca zidlala indima ebalulekileyo kumashishini aphatha imidiya ebolileyo okanye eyingozi.Iintambo zazo ezingasebenziyo ngokwekhemikhali zinika ukuxhathisa okugqwesileyo kwiikhemikhali ezonakalisayo, zizenza zibe yimfuneko kwizicelo apho ukuthembeka kwenkqubo kubalulekile.Ukusuka kwizityalo zemichiza ukuya kwishishini lamachiza, ukusuka kwimisebenzi yezemigodi ukuya kumbane wokuvelisa, iivalve ezinemigca zibonelela ngezisombululo ezinokwethenjelwa, ezizinzileyo.Banikezela ngeenzuzo ezininzi, kubandakanya ukumelana nokubola, ukusebenza kakuhle kwamandla kunye nobuchule bokutywina obuphezulu, okubenza ukuba balungele iinkqubo ezahlukeneyo zemizi-mveliso.Ke kwixesha elizayo xa udibana nevalve enemigca, khumbula indima yayo ebalulekileyo ekuqinisekiseni ukusebenza kakuhle nangokukhuselekileyo kwemizi-mveliso emininzi.
Ixesha lokuposa: Nov-11-2023