Chiyambi cha Check mavavu

Ma valve owunika ndi ma valve odzichitira okha omwe amatseguka ndikuyenda kutsogolo ndikutseka ndi reverse flow.

Kuthamanga kwa madzi omwe akudutsa mu dongosolo kumatsegula valavu, pamene kutembenuka kulikonse kudzatseka valve. Ntchito yeniyeni idzasiyana malinga ndi mtundu wa makina a Check valve. Mitundu yodziwika bwino ya Check ma valves ndi swing, lift (pistoni ndi mpira), butterfly, stop and tilting-disk.

Mitundu ya Check ma valve

Swing Check valve
Chovala choyambira Choyang'ana chimakhala ndi thupi la valve, boneti, ndi disk yomwe imalumikizidwa ndi hinge. Diskiyo imasuntha kuchoka pampando wa valve kuti ilole kuyenda kutsogolo, ndikubwerera kumpando wa valve pamene kutuluka kwa mtsinje kwayimitsidwa, kuteteza kubwerera.

Chimbale chomwe chili mumtundu wa swing Check valve sichimayendetsedwa pomwe chimatsegula kapena kutseka. Pali mapangidwe ambiri a disk ndi mipando omwe alipo, kuti akwaniritse zofunikira za mapulogalamu osiyanasiyana. Valavu imalola kuyenda kwathunthu, kosasunthika ndikutseka basi pamene kupanikizika kumachepa. Ma valve awa amatsekedwa kwathunthu pamene kutuluka kufika pa zero, pofuna kupewa kubwereranso. Kuthamanga ndi kuthamanga kwa valve mu valve ndizochepa kwambiri.

Lift Check valve
Mapangidwe a mpando wa valavu yonyamula-Check ndi ofanana ndi valavu ya Globe. Chimbale nthawi zambiri chimakhala ngati pisitoni kapena mpira.

Ma valve a Lift Check ali oyenerera kwambiri ntchito yothamanga kwambiri komwe kuthamanga kwathamanga kuli kokwera. Mu lift Check ma valves, chimbalecho chimawongoleredwa ndendende ndipo chimalowa bwino mu dashpot. Ma valve a Lift Check ndi oyenera kuyika mu mizere yopingasa kapena yoyima ya mapaipi okwera mmwamba.

Mayendedwe okweza Onani mavavu ayenera kulowa pansi pa mpando nthawi zonse. Pamene kuthamanga kumalowa, pisitoni kapena mpira umakwezedwa mkati mwa zitsogozo kuchokera pampando ndi kukakamizidwa kwa kutuluka mmwamba. Kuthamanga kukayima kapena kutembenuka, pisitoni kapena mpira umakakamizika pampando wa valve ndi kubwereranso ndi mphamvu yokoka.