Hydraulic balance valve Excavator hydraulic cylinder valve core RVCA-LAN

Ivalve yokunceda yahlulwe yaba ziindidi ezimbini: ukusebenza ngokuthe ngqo kunye nomqhubi wenqwelomoya.

Umgaqo osebenzayo wevalve yokunceda esebenza ngokuthe ngqo:

Ivalve esebenza ngokuthe ngqo yivalvu yokukhulula apho uxinzelelo lwenkqubo olusebenza kwi-spool lulungelelaniswa ngokuthe ngqo noxinzelelo olulawula amandla entwasahlobo. Inkqubo ethile yevalve yokunceda ukugcina uxinzelelo lwenkqubo ekufutshane rhoqo kukuba: Xa i-valve yokunceda isebenza ngokuzinzileyo, i-spool ilungelelaniswa kwindawo yokuvula ehambelana nokuhamba okuphuphumayo. Xa uxinzelelo lwenkqubo lukhulu kunexabiso lokumisela ivalve yokukhulula, i-hydraulic thrust etyhala i-spool phezulu inyuka, i-spool ilahlekelwa ibhalansi yayo yasekuqaleni kwaye inyuke, ubungakanani bokuvula δ buyanda, ukuchasana kolwelo kuyancipha, ukuphuphuma kwamanzi kuyanda, kunye noxinzelelo lwenkqubo malunga nokuhla umva kwixabiso lokucwangcisa. Xa uxinzelelo lwenkqubo lusezantsi kunexabiso elibekiweyo levalve yokukhulula, ukutyhala kwehydraulic kutyhala i-spool ukuya phezulu iba ncinci, i-spool ihla isuka kwindawo yokuqala phantsi kwentshukumo yamandla entwasahlobo, umthamo wokuvula δ uyancipha, ukuxhathisa kolwelo. ukwanda, ukuhamba okuphuphumayo kuyancipha, kwaye uxinzelelo lwenkqubo luphakama ngokuzenzekelayo, kwaye malunga nokubuyela kwixabiso lokuqala. Ngoko ke, xa i-valve yokunceda esebenza ngokuthe ngqo isebenza, i-spool inyuka kwaye ihla kunye nokutshintsha koxinzelelo lwenkqubo, ukwenzela ukuba kugcinwe uxinzelelo lwenkqubo phantse rhoqo.

Umgaqo-siseko wevalve yoncedo olulingwayo: Ivalve yoncedo esetyenziswa ngumqhubi wepilot yivalve yokukhulula esebenzisa ivalve yokulinga ukukhawulela uxinzelelo kunye nokulawula ukuphuphuma kwevalve engundoqo.

Ngevalve yokunceda kwinkqubo ye-hydraulic, uxinzelelo lwenkqubo alukwazi ukudlula uxinzelelo olubekwe yi-valve yokunceda, ngoko ke i-valve yokunceda nayo idlala indima yokuthintela ukugqithiswa kwenkqubo. Ukuba i-valve yokunceda isetyenziswe njenge-valve yokukhusela, uxinzelelo olulinganiselweyo xa inkqubo igcwele kakhulu kufuneka isetyenziswe njengoxinzelelo lokumisela i-valve. Ukugqithisa xa i-valve port ivuliwe, i-oyile ichitheka emva kwetanki, idlala indima yokukhusela ukhuseleko. Ivalve yokhuseleko ivalwa ngokuqhelekileyo xa isixokelelwano sisebenza ngokuqhelekileyo.