Kuya kufuneka ukhethe ivalvu yebhola, kodwa uhlobo lwayo luyamangalisa. Ukukhetha uhlobo olungalunganga kunokuthetha ukuba ayilungelani kakuhle, ukuvuza kwixesha elizayo, okanye inkqubo ekunzima ukuyigcina ikwimeko entle.

Iintlobo ezine eziphambili zeevalvu zebhola zahlulwe ngokwendlela ezakhiwe ngayo umzimba wazo: i-single-piece,iziqwenga ezimbini, iziqwenga ezintathu, kunye nephezulu. Uyilo ngalunye lubonelela ngebhalansi eyahlukileyo yexabiso, amandla, kunye nokulula kokulungiswa, luzilungelelanisa nezicelo ezithile kunye neemfuno zolondolozo.

Ukuqonda ezi ntlobo zisisiseko linyathelo lokuqala, kodwa sisiqalo nje. Ndihlala ndiba nale ncoko noBudi, umphathi oyintloko wokuthenga endisebenzisana naye eIndonesia. Abathengi bakhe bayadideka yiyo yonke indlela esetyenziswa ngayo. Ufumanisa ukuba xa ekwazi ukuchaza umahluko ophambili ngendlela elula, abathengi bakhe baziva benokuzithemba ngakumbi. Banokutshintsha ukusuka ekubeni ngabangaqinisekiyo ukuya ekwenzeni ukhetho oluyingcali, nokuba bathenga ivalvu elula yomgca wokunkcenkceshela okanye onzima ngakumbi wenkqubo yemizi-mveliso. Makhe sihlalutye ukuba ezi ntlobo zithetha ukuthini kuwe.

Ziziphi iintlobo ezahlukeneyo zeevalvu zebhola?

Ubona amagama anje “i-full port,” “trunnion,” kunye “ne-floating ball” kwii-spec sheets. Olu lwimi lobuchwephesha lwenza kube nzima ukwazi ukuba ufumana ukusebenza okufanelekileyo kwiimfuno zakho ezithile.

Ngaphaya kwendlela yomzimba, iivalvu zebhola zichwethezwa ngokobukhulu bazo bebhore (izibuko elipheleleyo xa kuthelekiswa nezibuko eliqhelekileyo) kunye noyilo lwangaphakathi lwebhola (edadayo ngokuchasene ne-trunnion). I-Full port iqinisekisa ukuhamba okungenamkhawulo, ngelixa uyilo lwe-trunnion lusingatha uxinzelelo oluphezulu kakhulu.

Masingene nzulu kwiintlobo zomzimba nezangaphakathi. Ulwakhiwo lomzimba lumalunga nokufikelela ekugcinweni.ipisi enyeivalvu yiyunithi evaliweyo; ayibizi kakhulu kodwa ayinakulungiswa.iziqwenga ezimbiniUmzimba wevalvu uyahlukana phakathi, nto leyo evumela ukulungiswa, kodwa kufuneka uyisuse kuqala kumbhobho. Uyilo olulula kakhulu kulondolozo yiiziqwenga ezintathuivalvu. Inxalenye esembindini equlathe ibhola ingasuswa ngokukhulula iibholithi ezimbini, kushiyeke uqhagamshelo lombhobho lungaphazanyiswa. Oku kulungele imigca efuna ukulungiswa rhoqo. Ngaphakathi, "izibuko" okanye umngxuma ebholeni ubalulekile.izibuko elipheleleyoivalvu inomngxuma olingana nombhobho ngobukhulu, nto leyo eyenza ukuba kungabikho mda wokuhamba kwamanzi.izibuko eliqhelekileyoincinci kancinci, nto leyo ilungele uninzi lwezicelo. Okokugqibela, phantse zonke iivalvu zebhola zePVC zisebenzisa i-ibhola edadayouyilo, apho uxinzelelo lwenkqubo lutyhala ibhola ngokukhuselekileyo kwisihlalo esisezantsi ukuze kwenziwe isitywino.

Iintlobo zeValve yeBhola ngokuKhawuleza

Ziziphi iintlobo ezahlukeneyo zoqhagamshelo lwevalvu yebhola?

Ufumene ivalvu efanelekileyo, kodwa ngoku kufuneka uyidibanise. Ukukhetha indlela engalunganga yokudibanisa kunokukhokelela ekufakelweni okunzima, ukuvuza okungapheliyo, okanye inkqubo ongenakukwazi ukuyilungisa ngaphandle kwe-hacksaw.

Iintlobo zoqhagamshelo eziqhelekileyo zeevalvu zebhola ziisokhethi ze-solvent-weld zebhondi ye-PVC esisigxina, iziphelo ezinemisonto zokudibanisa izinto ezahlukeneyo, iziphelo ezijijekileyo zeepayipi ezinkulu, kunye noqhagamshelo lwe-union oluyinyani ukuze lusebenze kakuhle.

Uhlobo loqhagamshelo olukhethayo luchaza indlela ivalvu edibana ngayo nemibhobho yakho.Isokhethiokanye uqhagamshelo "olutyibilikayo" lusetyenziselwa umbhobho wePVC, nto leyo eyenza ikhonkco elihlala lihleli, elingavuziyo kusetyenziswa isamente esinyibilikisayo. Oku kulula kwaye kuthembekile kakhulu.Ifakwe imisontouqhagamshelo (i-NPT okanye i-BSPT) lukuvumela ukuba ujije ivalvu kumbhobho oneentambo, nto leyo ilungele ukuqhagamshela i-PVC kwizinto zesinyithi, kodwa ifuna isitywini sentambo kunye nokufakelwa ngononophelo ukuze kuthintelwe ukuvuza. Kwimibhobho emikhulu (ngesiqhelo engaphezulu kwe-intshi ezi-2),ejikelezisiweyokusetyenziswa uqhagamshelo. Basebenzisa iibholiti kunye negasket ukwenza isitywino esomeleleyo, esikhuselekileyo, nesisuswa lula. Kodwa ukuze imibhobho emincinci ihlale icocekile, akukho nto idlulaUmanyano Lweneneivalvu. Olu yilo lunee-union nuts ezimbini ezikuvumela ukuba ususe ngokupheleleyo umzimba ophakathi wevalvu ukuze ulungiswe okanye utshintshwe ngelixa iziphelo zoqhagamshelo zihlala zincamathelisiwe kumbhobho. Yeyona nto ilungileyo kuzo zombini ezi hlabathi: uqhagamshelo oluqinileyo kunye nenkonzo elula.

Ukuthelekisa Iintlobo zoQhagamshelo

Ziziphi iintlobo ezahlukeneyo zeevalvu zeMOV?

Ufuna ukwenza inkqubo yakho isebenze ngokuzenzekelayo, kodwa i-“MOV” ivakala ngathi zizixhobo ezintsonkothileyo zoshishino. Awuqinisekanga ngomthombo wamandla, iindlela zokulawula, nokuba iyasebenza na kwiprojekthi yakho.

I-MOV imele i-Ivalvu Esebenza Ngeemoto, eyiyo nayiphi na ivalvu elawulwa yi-actuator. Iindidi ezimbini eziphambili zii-actuators zombane, ezisebenzisa i-electric motor, kunye nee-actuators ze-pneumatic, ezisebenzisa umoya ocinezelweyo ukusebenzisa ivalvu.

I-MOV ayilohlobo lukhethekileyo lwevalvu; yivalvu eqhelekileyo efakelwe i-actuator kuyo. Uhlobo lwe-actuator lolona lubalulekileyo.Izixhobo zombanezezona zixhaphakileyo kwiivalvu zebhola zePVC kwiinkqubo zamanzi. Zisebenzisa i-motor encinci ukuvula okanye ukuvala ivalvu kwaye ziyafumaneka kwiivolthi ezahlukeneyo (ezifana ne-24V DC okanye i-220V AC) ukuze zihambelane nomthombo wakho wamandla. Zilungele ukusetyenziswa njengeendawo zokunkcenkceshela ezenzekelayo, idosi yonyango lwamanzi, okanye ukuzaliswa kwetanki ekude.Ii-actuators zomoyaSebenzisa amandla omoya oxinzelelweyo ukuvula okanye ukuvala ivalvu ngokukhawuleza. Zinamandla kakhulu kwaye zithembekile kodwa zifuna i-air compressor kunye neentambo zomoya ukuze zisebenze. Ngokwesiqhelo uzibona kuphela kwimizi-mveliso emikhulu apho umoya oxinzelelweyo sele uyinxalenye yesiseko. Kuninzi lwabathengi beBudi, ii-actuators zombane zibonelela ngolungelelwano olufanelekileyo lolawulo, iindleko, kunye nokulula.

Yintoni umahluko phakathi kwevalvu yebhola yohlobo 1 kunye nevalvu yebhola yohlobo 2?

Ufunda iphepha leenkcukacha uze ubone elithi “Type 21 Ball Valve” kodwa awazi ukuba kuthetha ukuthini oko. Uxhalabile ukuba usenokuphoswa zinkcukacha ezibalulekileyo malunga nokhuseleko okanye ukusebenza kwayo.

Eli gama lidla ngokubhekisa kwizizukulwana zeevalvu zebhola ze-union ezivela kwiimpawu ezithile. "Uhlobo lwe-21″ luye lwaba lufinyezo loyilo lwanamhlanje, olusebenza kakuhle oluquka iimpawu eziphambili zokhuseleko kunye nokusebenziseka njenge-union nut ekhuselekileyo kwiibhloko.

Amagama athi “Uhlobo 1” okanye “Uhlobo 21” asingomgangatho oqhelekileyo kubo bonke abavelisi, kodwa abhekisa kuyilo olunempembelelo oluye lwabumba imarike. Cinga “ngohlobo 21” njengolumele umgangatho wanamhlanje, okumgangatho ophezulu wevalvu yomanyano lokwenyani. Xa sasiyila iivalvu zethu zomanyano lokwenyani zePntek, safaka imigaqo eyenza ezi zakhiwo zibe zintle kangaka. Eyona nto ibalulekileyo yileI-Block-Safe Union NutLe yindlela yokhuseleko apho i-nut inentambo yokutshixa, nto leyo eyenza kube nzima ukuyivula ngempazamo inkqubo ngelixa iphantsi koxinzelelo. Oku kuthintela ukuqhushumba okuyingozi. Ezinye iimpawu eziqhelekileyo zale ndlela ziqukaii-O-rings zesiqu ezibiniukhuseleko oluphezulu lokuvuza kwisiphatho kunyeiphedi yokuqhoboshela edibeneyo(ngokuqhelekileyo ngokwemigangatho ye-ISO 5211) okwenza kube lula ukongeza i-actuator yombane kamva. Ayisiyo ivalvu nje kuphela; yinxalenye yenkqubo ekhuselekileyo, ethembekileyo ngakumbi, nengamelani nexesha elizayo.

Isiphelo

Iindidi ezine eziphambili zeevalvu zibhekisa kwisitayile somzimba, kodwa ukuqonda okwenyani kuvela ekwazini izibuko, uqhagamshelo, kunye neendlela zokusebenzisa amandla. Olu lwazi lukuvumela ukuba ukhethe ivalvu efanelekileyo kuyo nayiphi na imisebenzi.