I-hydraulic balance valve Excavator i-hydraulic cylinder valve core RVCA-LAN

I-valve yokusiza ihlukaniswe yaba izinhlobo ezimbili: ukusebenza okuqondile kanye nomshayeli osebenzayo.

Isimiso sokusebenza se-valve yokusiza esebenza ngokuqondile:

I-valve yokusiza esebenzayo eqondile iyi-valve yokukhulula lapho ukucindezela kwesistimu kusebenza ku-spool kulinganiswa ngokuqondile namandla alawula i-spring force. Inqubo ethize yevalvu yokukhulula ukuze kugcinwe ukucindezela kwesistimu kuseduze nokungaguquguquki yilena: Lapho i-valve yokukhulula isebenza ngokuzinzile, i-spool ibhalansiswa endaweni yokuvula ehambisana nokugeleza okuchichimayo. Uma ingcindezi yesistimu inkulu kunevelu yokusetha ye-valve yokukhulula, i-hydraulic thrust ephushela i-spool phezulu iyakhuphuka, i-spool ilahlekelwa ibhalansi yayo yasekuqaleni futhi ikhuphuke, inani lokuvula δ liyakhuphuka, ukumelana noketshezi kuyehla, ukugeleza kokuchichima kuyanda, futhi ukucindezela kwesistimu cishe kwehlela emuva kunani lokusetha. Uma ingcindezi yesistimu iphansi kunevelu ebekiwe yevalvu yokukhulula, ukusunduza okudonsela amanzi phezulu kuba kuncane, i-spool yehla isuka endaweni yokuqala ngaphansi kwesenzo samandla entwasahlobo, inani lokuvula elingu-δ liyehla, ukumelana noketshezi. ukwanda, ukugeleza kokuchichima kuncipha, futhi ukucindezela kwesistimu kukhuphuka ngokuzenzakalelayo, futhi cishe kubuyela kunani elimisiwe lokuqala. Ngakho-ke, lapho i-valve yokusiza esebenza ngokuqondile isebenza, i-spool iya phezulu naphansi ngokushintsha kwengcindezi yesistimu, ukuze kugcinwe ingcindezi yesistimu cishe njalo.

Isimiso sevalvu yokusiza esebenza ngomshayeli: Ivalvu yokukhulula esebenza ngomshayeli iyivalvu yokukhulula esebenzisa i-pilot valve ukuze inciphise ukucindezela nokulawula ukuchichima kwevalvu eyinhloko.

Nge-valve yokusiza ohlelweni lwe-hydraulic, ingcindezi yesistimu ayikwazi ukudlula ukucindezela okubekwe yi-valve yokusiza, ngakho-ke i-valve yokusiza nayo idlala indima yokuvimbela ukugcwala kwesistimu. Uma i-valve yokusiza isetshenziswa njenge-valve yokuphepha, ukucindezela komkhawulo lapho uhlelo lugcwele ngokweqile kufanele lusetshenziswe njengokucindezela kokubeka kwe-valve. Ukulayisha ngokweqile lapho imbobo yevalvu ivulwa, uwoyela uchitheka ubuyela ethangini, udlala indima yokuvikela ukuphepha. I-valve yokuphepha ivamise ukuvalwa lapho isistimu isebenza ngokujwayelekile.