Dab tsi yog qhov txawv ntawm pneumatic on-off valve thiab pneumatic tswj valve

Lub pneumatic pob valve muaj pneumatic actuator thiab lub pob valve. Nws yog lub valve uas tau tsav los ntawm cov cua compressed thiab feem ntau yog siv rau hauv daim ntawv thov uas yuav tsum tau tswj tsis siv neeg. Pneumatic pob li qub muaj nyob rau hauv ob hom kev tswj sib txawv: hloov hom thiab hom kev tswj kom tau raws li cov kev xav tau sib txawv ntawm cov neeg siv khoom. Dab tsi yog qhov txawv ntawm pneumatic on-off valve thiab pneumatic tswj valve?

Ua ntej, cov khoom siv xaiv tau txawv: pneumatic hloov valve tuaj yeem nruab nrog solenoid valve, txwv hloov, lim siab txo valve, thiab lwm yam .; lub pneumatic tswj valve yuav tsum tau nruab nrog ib tug positioner kom paub qhov kev hloov kho muaj nuj nqi, nyob rau hauv tas li ntawd mus rau lub positioner kuj yuav nruab nrog ib tug solenoid valve, txwv hloov thiab lim siab txo valve.

Qhov thib ob, kev siv cov haujlwm sib txawv: pneumatic hloov valve yog qhov tseem ceeb rau kev qhib thiab kaw ntawm cov kav dej nruab nrab thiab kev txiav tawm thaum muaj xwm ceev. Pneumatic tswj valve yog siv ua ke nrog tus positioner. Nws tuaj yeem tswj kev ua haujlwm los ntawm kev nkag mus rau 4 ~ 20mADC teeb liab thiab 0.4 ~ 0.7MPa huab cua kom paub txog kev hloov pauv ntawm lub siab, ntws, kub thiab qib kua.

Thib peb, lwm qhov sib txawv: Pneumatic hloov li qub tsis muaj qhov tshwj xeeb rau cov yam ntxwv ntws uas tsis yog qhib thiab kaw. Pneumatic tswj li qub muaj cov kev xav tau siab dua rau cov yam ntxwv ntawm kev qhib rau kaw; pneumatic hloov li qub muaj kev xav tau siab dua rau kev hloov ceev dua li kev hloov kho. Li qub, pneumatic regulating li qub muaj ntau dua qhov yuav tsum tau qhib kev ruaj ntseg ntawm qhov qhib thiab kaw dua li qhov hloov pauv; Qhov sib txawv ntawm pneumatic regulating li qub thiab pneumatic switching li qub yog vim muaj kev siv sib txawv, qhov sib txawv ntawm qhov ntsuas ntsuas, thiab muaj qhov sib txawv loj hauv cov qauv ntawm lub cev valve thiab lub tshuab tsav.