Mubandi waluzibo lwachivwunisyo cha Butterfly

Muma 30s,valve ya butterflyyakatalisyigwa mu Amelika, yakaletwa ku Japani muma 50s, mpawo yakabelesegwa kapati mu Japani muma 60s, mpawo yakasumpulwa mu China musule lyama 70s. Kwalino, mavalvu aabutterfly aali atalaa DN300 mm munyika asyoonto-asyoonto akanjila mubusena bwamavalvu aamulyango. Kweezyanisya amavalvu aamulyango, mavalvu aa butterfly ajisi chiindi chifwiifwi chakujula akujala, manguzu masyoonto aakubeleka, busena busyoonto bwakubikkila mpawo taali abulemu buniini. Kubweza DN1000 mbuli chitondezyo, vvalavu ya butterfly ili a 2T, mpawo vvalavu ya gate ili a 3.5T, mpawo vvalavu ya butterfly njiubauba kusanganya azibelesyo zyakweenzya zyiingi, ilaanguzu zyakuyuma akusyomeka.

Bubi bwakujala kwa rabavalve ya butterflynjakuti kuti yabelesyegwa kuyoya, kubola kuyoochitika akaambo kakubelesya munzila iitaluzi, ooko kuyoopa kuti chibbula cha raba chizwe akunyonyooka. Muminyaka misyoonto yainda, China yakapanga mavalvu aajalidwe abutale, mpawo muminyaka misyoonto yainda, Japani ayalo yakapanga mavalvu aajisi chikozyano aajisi nsinga zyakukwabilila, zitazungaani asyoonto alimwi zitakwe muzuzumo.

Buumi bwakubeleka bwachibbula chakujala buli myaka iili 15-20 ya raba mpawo myaka iili 80-90 ya nsimbi mubukkale buli kabotu. Nokuba boobo, mbokusala kabotu kuyeeme aziyandikana mubukkale bwakubeleka.

kujatana aakati kakujalulavalve ya butterflympawo kweenda kwamaanzi kuli mumulongo mpawo kweendelana. Kuti yabelesyegwa kweendelezya mweelwe wamaanzi, bube bwayo bwakuzuza bulaswaangene akukazya kweenda kwamapaipi, mbuli bupati abupange bwamavalvu aabikkidwe mumapayipi obile zili zyomwe, mpawo mweelwe wakusweekelwa kwamapaipi uliindene, mpawo mweelwe wamaanzi aamupaipi ulaandeene.

Kuti vvalavu kaili muchiimo chakuzungaana kupati, kusule lya vvalavu lilakonzya kubola, mpawo kuli nzila yakunyonyoona vvalavu, aboobo kanjikanji lilabelesyegwa kunze lya 15°.

Eelyo vvalavu ya butterfly noili akati-kati, chiimo chakujula chipangwa avvalavumubili mpawo mutwe wakumbele wachipulo chili akati-kati kachikobela, mpawo mabali obile apanga ziimo zisiyene, mutwe wakumbele wachipulo kulubazu lumwi weenda kweenda munzila yamaanzi aakunka, mpawo lubazu lumwi lweenda kulwana nzila yamaanzi aakunka, aboobo, mubili wamuvuvu kulubazu lumwi mpawo bbazu lyamuvuvu talikwe bbazu lijalukide, mpawo lubazu lumwi lulakonzya kujaluka kujaluka kulimbuli mpako ya throttle, lubazu lwa nozzle lulafwambaana kwiinda lubazu lwa throttle, mpawo nguzu zitali kabotu ziyoozwa kunsi aa throttle side valve, mpawo chisinkilizyo cha raba kanjikanji chilawa.

Inguzu zyakubeleka zya butterfly valve, akaambo kakujalula akujalula kwa valve kusiyana, mpindu yayo iliindene, mpawo horizontal butterfly valve, ikapati valve mpati, akaambo kakuyaa ansi kwamaanzi, nguzu zipangwa akusiyana aakati kamutwe wakujulu awaansi wa valve shaft takukonzyi kulekelezyegwa pe. Mukuyungizya, aawo nkomo noibikkidwe kulubazu lwakunjila lwa valve, kweenda kwakuleya kulapangwa, mpawo nguzu zyakuzungaanya zilatanta. Eelyo vvalavu noili akati-kati, nzila yakubelesya yeelede kulijala akaambo kakubeleka kwanguzu zyamaanzi.