I-Excavator main valve yokulawula i-PC200-8 PC220-8 ivalvu yokuphepha 723-90-76101

Isimiso sokusebenza se-valve: i-valve yokukhulula yakhiwa i-valve yokukhulula kanye ne-valve yokuhlola. Lapho ingcindezi yesistimu ifinyelela ekucindezelweni kokuvula kwe-valve yokusiza, i-valve yokusiza iyavulwa futhi iphampu iyathululwa. Lapho ukucindezela kwesistimu kwehla ekucindezelweni kokuvala kwe-valve yokusiza, i-valve yokukhulula iyavala futhi i-pump ilayishe ohlelweni.
I-valve yokuthula i-valve engenza iphampu ye-hydraulic yehlise ngaphansi kwezimo ezithile. I-valve yokuthula ngokuvamile i-valve yokusiza ene-valve yezindlela ezimbili (imvamisa i-solenoid valve), esetshenziselwa ukusetha ukucindezela okuyinhloko kwesistimu (ipompo yamafutha) uma ingalayishiwe. Lapho amafutha okucindezela ekhishwa (ngokuguqulwa kwesenzo se-valve yezindlela ezimbili), amafutha okucindezela abuyiselwa ethangini, futhi ukucindezela kwepompo kawoyela kuncishiswa kucishe kube ngu-zero, ukuze kuzuzwe ukulawula iluphu futhi kuthuthukiswe impilo yephampu kawoyela kanye nokunciphisa ukusetshenziswa kwamandla.
Iyingxenye yeluphu ehlanganisiwe. I-valve yokunciphisa ingcindezi isetshenziselwa ukulungisa ingcindezi edingwa i-actuator, ewuchungechunge ku-loop futhi ngokuvamile ayikwazi ukusetshenziswa ngokushintshana.

Ulwazi olunwetshiwe:
Uhlobo lwe-valve yokukhipha:
Uhlobo lokungena
Ishaneli yokuthulula kanye ne-valve yokucindezela kumiswa ngokuhlukana. Lapho kuthululwa, i-spool ngayinye isendaweni engathathi hlangothi, futhi uwoyela osuka emthonjeni kawoyela ukhishelwa ethangini ngomzila kawoyela okhethekile ngevalvu ngayinye, futhi umgudu kawoyela othululayo uhamba ngevalvu ngayinye ehlehlayo. Lapho enye yama-valve isebenza (okungukuthi, i-passage kawoyela ethululayo inqanyuliwe), amafutha asuka emthonjeni kawoyela angena ku-actuator elawulwayo esuka ku-valve ehlehlayo yomgwaqo, futhi ingcindezi yokusebenza inqunyelwe i-valve yokucindezela umfanekiso.
Uhlobo lokulayisha
I-valve yokuthula kanye ne-valve yokuphepha ihlanganiswe ukuze yenze i-valve yokucindezela eqhutshwa umshayeli, okuyi-valve yokuthula kanye ne-valve yokuphepha, futhi ngezinye izikhathi i-valve echichimayo. Ngesikhathi sokuthulula, umzila kawoyela olawulayo udlula ku-valve ngayinye eqondisayo, efana nephaseji likawoyela othululayo.