Kodi mumadziwa bwanji za macheki ma valve?

1. Kodi valavu ya cheki ndi chiyani? 7. Kodi mfundo ya ntchito ndi yotani?

　　Onani valavundi mawu olembedwa, ndipo nthawi zambiri amatchedwa cheki valavu, valavu cheke, valavu cheke kapena valavu cheke mu ntchito. Mosasamala kanthu za momwe amatchulidwira, molingana ndi tanthauzo lenileni, tikhoza kuweruza momveka bwino ntchito ya valavu ya cheki kuti tipewe madziwo kuti asabwererenso m'dongosolo ndikuonetsetsa kuti madziwo amatha kuyenda mokhazikika. Kutsegula ndi kutseka kwa valve cheke kumatsirizidwa ndi mphamvu ya madzi othamanga, kotero valve yowunikira ndi mtundu wa valve yokha. Chifukwa cha mawonekedwe ake, kukula kwa ntchito ya ma valve cheke m'moyo ndi yayikulu kwambiri.

Awiri. Chiyambi cha kagawidwe ka ma cheke ma valve

Ma valve athu omwe amagwiritsidwa ntchito nthawi zambiri amakhala ndi mitundu itatu: mtundu wokweza, mtundu wa rotary ndi mtundu wa disc. Zotsatirazi padera zikuwonetsa mawonekedwe a ma valve atatu osiyanasiyana:

1. Chiyambi chokweza valavu yowunika

Nyamulani valavu yowunika imagawidwa m'mitundu iwiri: yopingasa ndi yowongoka molingana ndi njira yoyika chipangizocho. Kaya ndi yopingasa kapena yowongoka, imayenda motsatira olamulira kuti amalize kutsegula ndi kutseka.

A. Pazinthu zina zomwe zimafuna uinjiniya wapamwamba kwambiri, nthawi zambiri timagwiritsa ntchito ma valve amtundu wa lift-check cheki. Nthawi zambiri, timayika valavu yoyang'ana potuluka pampu;

B. Nthawi zambiri, ma valve otsekera kachetechete amagwiritsidwa ntchito popereka madzi ndi ngalande zanyumba zokwera kwambiri. Pofuna kupewa kutsekedwa, valavu yowunikira chete nthawi zambiri sagwiritsidwa ntchito potulutsa zimbudzi;

C. Kutaya kwachimbudzi kumayendetsedwa ndi valve yodzipatulira yopingasa. Nthawi zambiri amagwiritsidwa ntchito pothandizira madera am'deralo monga ngalande ndi mapampu otaya zimbudzi.

2. Ma valve oyendayenda amagawidwa m'magulu atatu: valavu imodzi, valavu iwiri ndi ma valve ambiri malinga ndi njira zawo zowunika. Mfundo yawo yoyendetsera ntchito ndikumaliza kuzungulira pakati pawo ndikumaliza kutsegula ndi kutseka.

A. Kugwiritsiridwa ntchito kwa ma valve rotary check valve ndikokhazikika, ndipo nthawi zambiri kumagwiritsidwa ntchito m'makina operekera madzi akumidzi, koma sikuli koyenera mapaipi a zimbudzi okhala ndi matope ambiri;

B. Pakati pa ma valve osiyana siyana a rotary check valve, valve single-leaf check valve imagwiritsidwa ntchito kwambiri. Sichifuna khalidwe lamadzimadzi ndipo nthawi zambiri amagwiritsidwa ntchito popereka madzi ndi ngalande, mafuta, mankhwala, metallurgical ndi ntchito zina. Makamaka m'malo ena oletsedwa, valavu yoyang'ana tsamba limodzi yakhala ikugwiritsidwa ntchito kwambiri;

3, kukhazikitsidwa kwa valavu yamtundu wa disc

A. Mavavu amtundu wa disc nthawi zambiri amakhala owongoka. Gulugufe-mtundu wa double valve check valves amagwiritsidwa ntchito kwambiri m'madzi ndi ngalande za nyumba zokwera, ndipo madzi ena amawononga kapena amagwiritsidwa ntchito m'zimbudzi zina;