Excavator solenoid valve 457-9878 hydraulic twj tso kua mis proportional solenoid valve

1, proportional valve qauv.

Qhov sib npaug valve yog hom tshiab ntawm hydraulic tswj ntaus ntawv. Lub siab, ntws, lossis kev taw qhia ntawm cov roj ntws tuaj yeem tswj tau nyob deb raws li cov khoom siv hluav taws xob input tsis tu ncua thiab proportionally. Lub proportional valve yog tsim los ntawm ob qhov chaw: electro-mechanical proportional conversion device thiab hydraulic tswj valve lub cev.

Muaj ntau ntau yam proportional electromagnets, tab sis lub hauv paus ntsiab lus ntawm kev ua hauj lwm yog tib yam, thiab lawv tag nrho cov tsim raws li kev tswj cov kev xav tau ntawm proportional valve. Nws txoj haujlwm yog ua kom tsis tu ncua thiab proportionally hloov cov teeb liab hluav taws xob nkag mus rau hauv cov khoom siv hluav taws xob thiab cov khoom tso tawm, thiab tom kawg tso tawm lub siab thiab ntws proportionally thiab tsis tu ncua tom qab lees txais cov neeg kho tshuab quab yuam thiab hloov chaw.

2. Ua hauj lwm hauv paus ntsiab lus ntawm proportional valve.

Lub teeb liab hais kom ua tau nthuav dav los ntawm lub suab sib luag, thiab qhov sib faib cov zis tam sim no mus rau lub proportional solenoid ntawm lub proportional valve, proportional solenoid output force thiab proportional txav ntawm lub valve core txoj hauj lwm, koj tuaj yeem proportional tswj cov dej ntws thiab hloov cov kev taw qhia ntawm cov kua ntws, thiaj li ua tiav txoj hauj lwm los yog ceev tswj ntawm tus actuator. Hauv qee daim ntawv thov uas xav tau txoj haujlwm siab lossis qhov raug ceev, qhov kaw-voj tswj qhov system kuj tuaj yeem tsim los ntawm kev txheeb xyuas qhov hloov pauv lossis ceev ntawm tus actuator.

Txoj cai ntawm proportional solenoid valve

Nws yog raws li lub hauv paus ntsiab lus ntawm lub solenoid hloov valve: thaum lub hwj chim raug txiav tawm, lub caij nplooj ntoos hlav nias cov tub ntxhais hlau ncaj qha rau lub rooj zaum, kaw lub valve. Thaum lub coil yog energized, lub resulting electromagnetic quab yuam overcomes lub caij nplooj ntoos hlav quab yuam thiab nqa cov tub ntxhais, yog li qhib lub valve. Lub proportional solenoid valve ua rau qee qhov kev hloov pauv rau cov qauv ntawm solenoid on-off valve: lub caij nplooj ntoos hlav quab yuam thiab lub zog electromagnetic yog sib npaug nyob rau hauv ib co coil tam sim no. Qhov luaj li cas ntawm lub kauj tam sim no lossis qhov loj ntawm lub zog hluav taws xob yuav cuam tshuam rau kev mob stroke ntawm lub plunger thiab qhib lub valve, thiab qhib lub valve (flow rate) thiab coil tam sim no (tswj lub teeb liab) muaj kev sib raug zoo linear. . Direct acting proportional solenoid li qub ntws hauv qab lub rooj. Qhov nruab nrab ntws hauv qab lub rooj zaum valve, thiab nws cov kev taw qhia ntawm lub zog yog tib yam li lub zog hluav taws xob, tab sis qhov sib txawv ntawm lub caij nplooj ntoos hlav quab yuam. Yog li ntawd, nws yog ib qho tsim nyog los teeb tsa cov txiaj ntsig me me ntawm qhov ntsuas qhov sib npaug ntawm qhov kev khiav hauj lwm (coil tam sim no) hauv lub xeev kev khiav hauj lwm. Thaum lub hwj chim tawm, Drake kua proportional solenoid valve raug kaw (ib txwm kaw).

Proportional solenoid valve muaj nuj nqi

Throttle tswj ntawm tus nqi ntws yog ua tiav los ntawm kev tswj hluav taws xob (ntawm chav kawm, kev tswj siab kuj tuaj yeem ua tiav los ntawm cov qauv kev hloov pauv, thiab lwm yam). Txij li thaum nws yog tswj throttle, yuav tsum muaj ib tug poob ntawm lub hwj chim.