Kugawa ndi kugwiritsa ntchito ma cheki ma valve
Vavu yoyang'ana imatanthawuza magawo otsegulira ndi otseka a valve yozungulira ndikudalira kulemera kwawo komanso kukakamiza kwa media kuti apange zochita kuti atseke kubweza kwapakati kwa valve.Valovu yoyang'ana ndi valve yodziwikiratu, yomwe imadziwikanso kuti valavu yoyendera, valavu yanjira imodzi, valavu yosabwerera kapena valavu yodzipatula.
Kusuntha kwa Flap kumagawidwa kukhala valavu yowunikira ndi swing check valve.Kwezani valavu yoyang'ana ndi mawonekedwe a valavu yapadziko lonse lapansi ndizofanana, kokha kusowa kwa tsinde la valve kuti muyendetse chivundikiro cha valve.Sing'anga kuchokera ku mbali yolowera (mbali yakumunsi) yolowera, kuchokera kumbali yotulukira (kumtunda) kutuluka.Pamene kulowetsedwa kolowera kumakhala kwakukulu kuposa kulemera kwa valavu ya valve ndi kukana kwake kothamanga komanso pamene valavu yatseguka.Mosiyana ndi zimenezi, valve imatsekedwa pamene sing'anga imayenda chammbuyo.Swing check valve ili ndi slant ndipo imatha kuzungulira mozungulira valavu ya valve, mfundo yogwira ntchito ndi yofanana ndi valavu yokweza.Ma valve owunikira amagwiritsidwa ntchito ngati valavu yapansi ya chipangizo chopopera, chomwe chingalepheretse kutuluka kwa madzi kumbuyo.Chongani ma valve ndi ma valve padziko lonse lapansi omwe amagwiritsidwa ntchito kuphatikiza, amatha kutenga gawo lodzipatula.Zoyipa zake ndi kukana kwambiri komanso kusasindikiza bwino kutsekeka.
Choyamba, valavu yokweza cheke imakhala ndi mitundu iwiri yoyimirira komanso yopingasa.Maonekedwe a valavu ya valve yokweza ndi yofanana ndi ya valve ya globe, choncho imakhala ndi mphamvu zambiri zamadzimadzi.Chovala cha valve chimasuntha pakati pa mzere woyimirira wa thupi la valve.Pamene sing'anga ikuyenda, valavu ya valve imatsegulidwa ndi kuponyedwa kwapakati, ndipo pamene sing'anga imasiya kuyenda, valavu ya valve imagwera pampando wa valve ndi kudzipachika.
Valovu yowunikira yokwera.Njira yolowera pakatikati ndi njira yotulutsira njira ndi njira yolowera pampando wa valve ndi yofanana, kukana koyenda kumakhala kochepa kuposa mtundu wowongoka.Valavu yokweza yoyima imayikidwa paipi yoyima.kudzera mu valavu yokweza cheke imatha kukhazikitsidwa mupaipi yopingasa.Zoletsedwa ndi zofunikira zoyika, zomwe zimagwiritsidwa ntchito pafupipafupi pang'ono DN <50.
Chachiwiri, Swing check valve: Diski ya valve check valve ili mu mawonekedwe ozungulira ndipo imazungulira mozungulira mzere wa mpando wa valve.Chifukwa cha njira yowongoka mkati mwa valavu, kukana koyenda kumakhala kochepa kuposa kwa valve yokweza.Ndikoyenera kwa mapaipi ang'onoang'ono ndi apakatikati, otsika, komanso apakati (kutsika kwapakati komanso m'mimba mwake komwe kumayenda sikumasintha kawirikawiri).Kusindikiza kwake sikuli bwino ngati mtundu wokweza.
Mavavu a swing cheke amagawidwa m'mitundu itatu: chimbale chimodzi, chimbale chapawiri, ndi ma disc ambiri.Mitundu itatuyi imayikidwa makamaka molingana ndi ma valve awiri, kuti ateteze kugwedezeka kwa hydraulic pamene sing'anga imasiya kuyenda kapena kubwerera kumbuyo.Masingle disc swing cheque mavavu nthawi zambiri ndi oyenera kugwiritsa ntchito sing'anga.Mukamagwiritsa ntchito valavu imodzi ya disc swing check pamapaipi akuluakulu, ndi bwino kugwiritsa ntchito valve yotseka pang'onopang'ono yomwe ingachepetse kuthamanga kwa nyundo ya madzi kuti muchepetse kuthamanga kwa nyundo ya madzi.Mavavu oyendera ma disc owirikiza ndi oyenera mapaipi akulu ndi apakatikati.The double disc swing check valve yokhala ndi kamangidwe kakang'ono ndi kulemera kochepa ndi valve yowunikira yomwe ikukula mofulumira;Mipikisano chimbale swing cheke mavavu ndi oyenera awiri awiri mapaipi.Kuyika kwa valavu ya swing cheki sikuli malire, ndipo imatha kukhazikitsidwa pamapaipi opingasa, ofukula, kapena opendekera.
Chachitatu, valavu yoyang'ana gulugufe: mtundu wowongoka.Mapangidwe a valavu ya butterfly ndi ofanana ndi valavu ya butterfly.Mapangidwe ake ndi osavuta, kukana koyenda kocheperako, kuthamanga kwa nyundo yamadzi kumakhalanso kocheperako.Chovala cha valve chimazungulira mozungulira pini pampando wa valve wa valve.Valavu yamtundu wa disc ili ndi mawonekedwe osavuta, imatha kukhazikitsidwa paipi yopingasa, kusindikiza kumakhala koyipa.
Chachinayi, valavu yoyang'ana diaphragm: pali mitundu yosiyanasiyana ya mapangidwe, onse amagwiritsa ntchito diaphragm monga gawo lotsegulira ndi kutseka, chifukwa cha ntchito yake ya nyundo yamadzi, kapangidwe kosavuta, mtengo wotsika, m'zaka zaposachedwa chitukuko chachangu.Koma kugwiritsa ntchito diaphragm cheke valavu kutentha ndi kukakamizidwa ndi zoletsa diaphragm zinthu.Diaphragm cheke valavu ndiyoyenera kuti ikhale yosavuta kutulutsa madzi paipi, diaphragm ikhoza kukhala yabwino kwambiri kuthetsa sing'anga motsutsana ndi kutuluka kwa madzi opangidwa ndi zotsatira zake, nthawi zambiri imagwiritsidwa ntchito paipi yotentha yozungulira yozungulira, makamaka yoyenera. madzi mapaipi, ambiri ntchito kutentha kwa sing'anga mu -12 - 120 ℃ pakati pa kuthamanga ntchito <1.6MPa, koma diaphragm cheke valavu tingachite kukwaniritsa calibre yokulirapo, pazipita akhoza kufika mu DN 2000mm kapena Zambiri!Komabe, valavu yoyang'ana diaphragm ikhoza kukhala yokulirapo, DN imatha kufika 2000mm kapena kupitilira apo.
