Valavu Yowunikira Mpira
Kodi valavu yowunikira mpira ndi chiyani?
Valvu yowunikira ndi mtundu wa valavu yogwirira ntchito mbali imodzi, komanso ngati mavalavu osabwerera.
AValavu Yowunikira MpiraNdi valavu yosavuta komanso yodalirika yokhala ndi mpira wozungulira ngati gawo lokhalo losuntha loletsa kuyenda kwa madzi m'mbuyo. Chifukwa cha kapangidwe kake kosavuta koyenda bwino komanso kosasamalira, valavuyi nthawi zambiri imatchulidwa ndipo imagwiritsidwa ntchito m'malo okwezera madzi akuda omwe amatha kulowa m'madzi. Mpando wa valavu wodzaza ndi madoko umapangidwa mwapadera kuti mpirawo ukhale wolimba popanda kulowa mu mpando wa valavu. Pakugwiritsa ntchito valavu yotulutsa mpweya kapena yoletsa kusefukira kwa madzi, mpira "woyandama" m'malo mwa "womira".
Ma valve oyezera mpiraMuli mpira womwe umakhala pampando, womwe uli ndi dzenje limodzi lokha. Umagwira ntchito pogwiritsa ntchito mpira womwe umakwera ndi kutsika mkati mwa valavu. Mpandowo umapangidwa kuti ugwirizane ndi mpirawo, ndipo chipindacho chimakhala ndi mawonekedwe ofanana kuti chitsogolere mpirawo kupita pampando kuti utseke ndikuyimitsa kuyenda kwa m'mbuyo. Mpirawo uli ndi mulifupi wokulirapo pang'ono kuposa wa dzenje lolowera (mpando). Pamene kuthamanga kwa mpando kukupitirira kuposa mpirawo, madzi amaloledwa kuyenda kudzera mu valavu. Koma kuthamanga kwa mpirawo kukupitirira kuthamanga kwa pansi pa mpandowo, mpirawo umabwerera kuti upumule pampandowo, ndikupanga chisindikizo chomwe chimaletsa kubwerera m'mbuyo. Mpirawo umakwera ndi kutsika mkati mwa valavu kutengera kuyenda kwa madzi ndi kutseka mpando wopangidwa ndi makinawo pamene palibe kuyenda kapena kuyenda kwa m'mbuyo komwe kumachitika ndipo umatseka pampando kuti uletse kuyenda kwa madzi. Ma valve owunikira omwe ali ndi mpira wolumikizidwa ndi Buna-N monga muyezo komanso okhala ndi mipira ya phenolic yosagwira dzimbiri ya abrasive media. Ma valve owunikira mpira nthawi zambiri amasankhidwa kugwiritsidwa ntchito m'malo opompa chifukwa amadziyeretsa okha pamene mpirawo ukuzungulira panthawi yogwira ntchito ndipo sasamalira molunjika. Ngati kuwunika mpira kukupanga phokoso, nthawi zambiri kumakhala chifukwa cha kusakwanira kwa mphamvu ya pampu kapena mavuto a nyundo yamadzi.
Zinthu zazikulu za valavu yowunikira mpira
Makhalidwe ndi ubwino waValavu Yowunikira Mpira
- *valavu yoyezera mpira ndivalavu yosavuta komanso yodalirika yokhala ndi mpira wozungulira ngati gawo lokhalo losuntha loletsa kuyenda kwa m'mbuyo,kapangidwe kopanda kukonza, koyenera malo okwerera madzi otayira omwe amatha kuyikidwa pansi pa madzi.
- *Mpando wa valavu wodzaza ndi ma ports wapangidwa mwapadera kuti mpirawo ukhale wolimba popanda kulowa mu valavu.
- *NortechValavu Yowunikira MpiraZimadziyeretsa zokha, pamene mpirawo umazungulira panthawi yogwira ntchito zomwe zimachotsa chiopsezo cha zinyalala zomwe zimamatira pa mpirawo.
- *Bore yodzaza komanso yosalala imatsimikizira kuyenda bwino komanso kutayika kwa mphamvu zochepa komanso imachotsa chiopsezo cha malo omwe pansi pake angalepheretse kutsekedwa bwino. Mpira wamba wapangidwa ndi maziko achitsulo okhala ndi rabara ya NBR, ndipo kulimba kwa rabara kumakonzedwa bwino kuti mpirawo usamatirire pampando. Mipira ya polyurethane ndi yoyenera kugwiritsidwa ntchito popanga zinthu zolimbitsa thupi komanso pamene mipira yosiyanasiyana ikufunika kuti ipewe phokoso ndi nyundo yamadzi.
Mafotokozedwe aukadaulo a valavu yowunikira mpira
Mafotokozedwe aukadaulo aValavu Yowunikira Mpira
| Kapangidwe ndi Kupanga | BS EN12334 |
| Maso ndi maso | DIN3202 F6/EN558-1 |
| Mapeto a Flange | EN1092-2 PN10, PN16 |
| Thupi | Chitsulo chopangidwa ndi ductile GGG50 |
| Mpira | Chitsulo chodulira + NBR / Chitsulo chodulira + EPDM |
| M'mimba mwake mwa dzina | DN40-DN500 |
| Kuyeza kwa kupanikizika | PN10, PN16 |
| Sing'anga yoyenera | Madzi, zimbudzi, ndi zina zotero |
| Kutentha kwa ntchito | 0~80°C(mpira wa NBR), -10~120°C(mpira wa EPDM) |
Chiwonetsero cha Zamalonda:
Kugwiritsa ntchito ma valve owunikira mpira
Mtundu uwu waValavu Yowunikira Mpiraimagwiritsidwa ntchito kwambiri m'mafakitale amadzi otayira, magetsi, ndi makampani opanga zinthu. Valavu yoyezera mpira ndi yoyenera kugwiritsidwa ntchito m'malo oipitsidwa (mpaka 120˚F) chifukwa valavu yooneka ngati mpira imaletsa kusonkhanitsa dothi. Nthawi zambiri malo oyezera madzi otayira amakhala ndi valavu yoyezera mpira kuti isayende mobwerera m'mbuyo. Imagwiritsidwanso ntchito kwambiri m'malo opopera madzi omwe sapezeka kawirikawiri, chifukwa amafunika kukonza pang'ono, nthawi zambiri ngati mpirawo upanga phokoso chifukwa cha mphamvu yokwanira ya pampu kapena nyundo yamadzi.
