Hydraulic balance valve Excavator hydraulic cylinder valve core RVCA-LAN

Valve yothandizira imagawidwa m'mitundu iwiri: kuchita molunjika ndi woyendetsa ndege.

Mfundo yogwiritsira ntchito valavu yothandizira mwachindunji:

Direct acting relief valve ndi valavu yopumula momwe kupanikizika kwa dongosolo kumayendera pa spool kumayenderana mwachindunji ndi kukakamiza kowongolera mphamvu yamasika. Njira yeniyeni ya valavu yothandizira kuti ikhale ndi kupanikizika kwa dongosolo pafupi nthawi zonse ndi: Pamene valve yothandizira imagwira ntchito mokhazikika, spool imakhala yoyenera pamalo otsegulira omwe amagwirizana ndi kusefukira kwa madzi. Pamene kupanikizika kwa dongosolo kuli kwakukulu kuposa kuyika kwa valve yothandizira, kuthamanga kwa hydraulic kukankhira spool mmwamba kumawonjezeka, spool imataya malire ake oyambirira ndikukwera mmwamba, kuchuluka kwa kutsegula δ kumawonjezeka, kukana kwamadzimadzi kumachepa, kusefukira kumawonjezeka, ndipo kukakamiza kwadongosolo kumatsikira kumtengo wokhazikika. Pamene kuthamanga kwa dongosolo kumakhala kotsika kusiyana ndi mtengo wamtengo wapatali wa valve yothandizira, kuthamanga kwa hydraulic kukankhira spool m'mwamba kumakhala kochepa, spool imatsika kuchokera pamalo oyambirira pansi pa mphamvu ya masika, kuchuluka kwa masika δ kumachepa, kukana kwamadzimadzi. kumawonjezeka, kusefukira kwamadzi kumachepa, ndipo kupanikizika kwa dongosolo kumangowonjezereka, ndipo pafupifupi kubwereranso kumtengo wokhazikitsidwa woyambirira. Choncho, pamene valavu yothandizira mwachindunji ikugwira ntchito, spool imayenda mmwamba ndi pansi ndi kusintha kwa kayendetsedwe ka kayendetsedwe kake, kuti apitirizebe kupanikizika kwa dongosolo pafupifupi nthawi zonse.

Mfundo ya valve yothandizira yoyendetsa ndege: Valavu yothandizira woyendetsa ndege ndi valavu yothandizira yomwe imagwiritsa ntchito valavu yoyendetsa kuti ichepetse kupanikizika ndi kulamulira kusefukira kwa valve yaikulu.

Ndi valve yothandizira mu hydraulic system, kupanikizika kwa dongosolo sikungathe kupitirira kupanikizika komwe kumayikidwa ndi valavu yothandizira, kotero kuti valve yothandizira imathandizanso kuti chitetezo chitetezeke. Ngati valavu yothandizira ikugwiritsidwa ntchito ngati valavu yotetezera, kupanikizika kwa malire pamene dongosolo ladzaza kwambiri liyenera kugwiritsidwa ntchito ngati kupanikizika kwa valve. Kuchulukirachulukira pamene doko la valve litsegulidwa, mafuta amathamangira ku thanki, kusewera gawo lachitetezo. Valavu yotetezera nthawi zambiri imatsekedwa pamene dongosolo likugwira ntchito bwino.