Muphunzira zambiri pamitu iyi:

Kodi valavu ya mpira wa PVC ndi chiyani?
Mitundu ya PVC Ball Valves
Mapangidwe a valve ya PVC
Ubwino wa valavu ya mpira wa PVC
ndi zina…
CPVC yokhazikika ya mpira valve

Mutu 1 - Vavu ya mpira ndi chiyani?
Vavu ya mpira wa PVC kapena polyvinyl chloride ndi valavu ya pulasitiki yokhala ndi mpira wozungulira wokhala ndi dzenje lomwe limayimitsa kutuluka kwamadzi potembenuza mpirawo kotala. Zimakhala zolimba kwambiri, zotsika mtengo ndipo zimatha kugwiritsidwa ntchito kuwongolera kayendedwe ka madzi, mpweya, mankhwala owononga, ma asidi ndi maziko. Mavavu a mpira a PVC ali ndi kutentha kochepa kwambiri komanso kukana kupanikizika, koma mphamvu yotsika yamakina. Monga mavavu onse a mpira, mavavu a PVC amasiya kuyenda pozungulira mpira 90 °.

Pakatikati pa valavu ya mpira wa PVC ndi mpira wozungulira, wotchedwa mpira wozungulira. Tsinde pamwamba pa mpira ndi njira yomwe imatembenuza mpirawo, womwe ukhoza kuchitidwa pamanja kapena pawokha, malingana ndi mapangidwe a valve. Valavu imatsegula pamene chogwiriracho chikufanana ndi chitoliro ndipo chimatseka pamene chogwiriracho chiri perpendicular kwa chitoliro.

Valve ya mpira wa PVC

Mavavu a mpira a PVC amapangidwa ndi pulasitiki osayaka ndipo amatha kupirira kutentha kuchokera -14°C mpaka -140°C. Amagwira ntchito zambiri zofanana ndi ma valve a mpira wachikhalidwe, komabe ndi opepuka, ophatikizika, osavuta kukhazikitsa, komanso amatha kusinthira kuzinthu zosiyanasiyana.

Mutu 2 - Mitundu ya PVC Ball Valves
Mitundu yosiyanasiyana ya mavavu a mpira a PVC amapangidwa kuti akwaniritse ntchito zenizeni. Iwo ali m'gulu la chiwerengero cha madoko, mpando mtundu, thupi msonkhano, ndime mpira ndi anabala kukula. Chosankha chosankha mtundu wa valavu ya mpira ndi ntchito, yomwe imatsimikiziridwa ndi kupanikizika, kukula, kutentha, chiwerengero cha madoko ofunikira, mapeto a mapeto ndi kasinthidwe.

Mavavu a mpira a PVC amapangidwa kuchokera ku vinyl, zinthu za thermoplastic zomwe zimasintha mawonekedwe a thupi zikatenthedwa kapena kuzizizira. Monga ma thermoplastics onse, PVC ndi pulasitiki yogwirizana ndi chilengedwe yomwe imatha kusungunuka ndikusinthidwanso nthawi zambiri. Kuphatikiza pa kugwiritsidwa ntchito popanga ma valve a mpira a PVC, PVC imagwiritsidwanso ntchito kwambiri popanga mapaipi.

Mtundu wa valve wa PVC
valavu yokha
Valavu ya mpira wa PVC yokhazikika imatha kukhala yanjira ziwiri kapena zitatu. Iwo ali ndi pneumatic kapena actuator yamagetsi yomwe imatha kuyendetsedwa pamanja ndi chowongolera chakutali kapena kukhala ndi kasupe. Ma valve odzipangira okha a PVC amapangidwa kuti apangitse mpira pa valve kuti atsegule kapena kutseka kuti atulutse kapena kuletsa kutuluka kwa zofalitsa ndipo angagwiritsidwe ntchito pazinthu zosiyanasiyana zofalitsa kuchokera kumadzi kupita ku gasi ndi mafuta.

Pneumatically actuated PVC mpira valavu

Yang'anani valavu
Ma valve owunika a PVC amagwiritsidwa ntchito pomwe kutuluka kumbuyo kungawononge dongosolo kapena kuyambitsa kuipitsidwa kwa kusefera ndi kupopera. Ndiwo valavu ya mpira yodziwikiratu yomwe imachepetsa kupanikizika mu dongosolo. Ma valve owunika a PVC ndi ma trunnions omwe amatseka ndi kukakamizidwa kukafika pamlingo wina. Amagwiritsidwa ntchito pokonza mankhwala, kuyeretsa madzi ndi njira zoziziritsira mankhwala. Mosiyana ndi ma valve wamba a PVC, ma valavu owunika alibe tsinde kapena chogwirira ndipo ndi osavuta kupanga.

Trunnion PVC Chongani Vavu

Flanged PVC Ball Valve
Mbali yapadera ya valavu ya mpira wa PVC ya flanged ndi njira yake yolumikizira, ndiko kuti, flange. Amakhala ndi kutuluka kwakukulu chifukwa nthawi zambiri amakhala oboola kwambiri. Ma valve a mpira a Flanged PVC amapezeka ndi madoko awiri, atatu kapena anayi, ndi opepuka komanso osavuta kukhazikitsa. Makulidwe a flange amasiyanasiyana malinga ndi kukakamizidwa kogwiritsidwa ntchito. Mavavu a mpira a PVC amagwiritsa ntchito zomatira zomatira kapena mabawuti okhala ndi ma gaskets.

Flanged PVC Ball Valve

Vavu ya Mpira ya PVC yoyandama
Ndi valavu ya mpira ya PVC yoyandama, mpirawo umayimitsidwa mumadzimadzi ndikugwiridwa ndi mpando woponderezedwa wa valve. Shaft imamangiriridwa pamwamba pa mpirawo, ndipo gawo limodzi mwa magawo atatu a chogwiriracho kumapereka malo osalala kuyambira otseguka mpaka otsekedwa. Pamene mpira ukutembenuka, umakanikizidwa pampando wake, kuletsa kuyenda. Mpira umayandama mu thupi la valve, choncho dzina la valve.

Vavu ya Mpira ya PVC yoyandama

Full Bore PVC Ball Valve
Kwa mavavu a mpira wa PVC, kutsegula kwa mpira kumafanana ndi kukula kwa chitoliro. Chifukwa dzenje la valve ndilofanana ndi chitoliro, pamene valavu imatseguka, kutuluka kwa sing'anga kumakhala kopanda malire ndipo palibe kutsika kwamtundu uliwonse. Mavavu a mpira a PVC amaonedwa ngati ma valve obwezeretsa pamakina omwe amafunikira kutsika kwapang'onopang'ono komanso ma coefficients otaya kwambiri.

Full Bore PVC Ball Valve

Vavu Yoyendetsedwa Pamanja
Pakati pa mitundu yosiyanasiyana ya mavavu a mpira wa PVC, ntchito yamanja ndiyo yosavuta komanso yosavuta kugwiritsa ntchito. Tsegulani valavu ya mpira wa PVC yanjira ziwiri posuntha chogwiriracho molingana ndi chitoliro. Kuti mutseke valavu, sunthani chogwiriracho perpendicular kwa chitoliro. Kutsegula kapena kutseka valavu kumafuna kutembenukira kotala kwa chogwirira mbali iliyonse.