E320B valavu yothandizira valavu 171-0030 E320 valavu yayikulu yotetezera

Valavu yothandizira ndi hydraulic pressure control valve, yomwe makamaka imagwira ntchito yochepetsera kupanikizika kosalekeza, kuwongolera kupanikizika, kutsitsa dongosolo ndi chitetezo chachitetezo pazida zama hydraulic. Mu kachulukidwe pampu throttling regulation dongosolo, kachulukidwe mpope amapereka otaya nthawi zonse, pamene kuthamanga kwa dongosolo kumawonjezeka, kufunikira kwa kutuluka kudzachepetsedwa, panthawiyi valve yothandizira imatsegulidwa, kotero kuti kuthamanga kwambiri kubwerera ku thanki, kuonetsetsa kuti kuthamanga kwa valve yolowera, ndiko kuti, kuthamanga kwa potulutsira pampu kumakhala kosasintha. Valve yothandizira imalumikizidwa motsatizana pamayendedwe obwerera mafuta, ndipo kukhazikika kwa magawo osunthira kumbuyo kwa valavu yothandizira kumawonjezeka. Ntchito yotsitsa ya dongosololi ndikulumikiza valavu ya solenoid ndi kayendedwe kakang'ono kamene kakusefukira pamndandanda pa doko lakutali la valve yothandizira. Pamene electromagnet yapatsidwa mphamvu, doko loyang'anira kutali la valve yothandizira limadutsa mu thanki yamafuta. Panthawiyi, pampu ya hydraulic imatsitsidwa ndipo valve yothandizira imagwiritsidwa ntchito ngati valavu yotsitsa. Chitetezo cha chitetezo ntchito, pamene dongosolo likugwira ntchito bwino, valavu imatsekedwa, pokhapokha ngati katunduyo akupitirira malire omwe atchulidwa, kusefukira kumatsegulidwa, ndipo chitetezo chochuluka chimachitidwa, kotero kuti kupanikizika kwa dongosolo sikuwonjezeka.

Valavu yothandizira, valavu yowongolera kuthamanga kwa hydraulic. Zimagwira ntchito ngati kusefukira kwanthawi zonse komanso chitetezo chachitetezo pazida zama hydraulic. Kuthamanga kwanthawi zonse: mu dongosolo la quantitative pump throttling regulation, pampu yochulukira imapereka kuthamanga kosalekeza. Pamene kupanikizika kwa dongosolo kumawonjezeka, kufunikira kothamanga kudzachepa. Panthawiyi, valve yothandizira imatsegulidwa, kotero kuti kutuluka kwakukulu kumabwereranso ku thanki, kuonetsetsa kuti mpweya wotsekemera wa valve, ndiko kuti, kuthamanga kwa mpweya wa pampu kumakhala kosalekeza (doko la valve nthawi zambiri limatsegulidwa ndi kusinthasintha kwa kuthamanga) . Zigawo zomwe zimakhala zosavuta kutulutsa phokoso pazida zama hydraulic nthawi zambiri zimatengedwa ngati mapampu ndi mavavu, ndipo mavavu amayendetsedwa kwambiri ndi ma valve othandizira ndi ma valve owongolera ma elekitiroma. Pali zinthu zambiri zomwe zimatulutsa phokoso. Phokoso la valve yothandizira lili ndi mitundu iwiri: phokoso la liwiro ndi phokoso la makina. Phokoso la phokoso la liwiro limayamba makamaka chifukwa cha kugwedezeka kwa mafuta, cavitation ndi hydraulic shock. Phokoso la makina makamaka limayamba chifukwa cha kukhudzidwa ndi kugunda kwa magawo mu valavu.