Kaw-off li qub, throttle li qub, siab txo li qub, kos li qub thiab lwm yam li qub yog kev taw qhia. Yog hais tias lawv tau ntsia upside down, lub throttle valve yuav cuam tshuam rau kev siv thiab lub neej; Lub siab txo lub valve yuav tsis ua haujlwm tag nrho, thiab cov tshev valve tuaj yeem ua rau muaj kev phom sij.
Kev ceev faj rau kev txhim kho valve
Feem ntau, li qub muaj cov cim taw qhia ntawm lub cev valve; yog tias tsis muaj kev taw qhia taw qhia, nws yuav tsum raug txheeb xyuas raws li txoj cai ua haujlwm ntawm lub valve.
Lub valve kab noj hniav ntawm lub kaw-off valve yog asymmetrical ntawm sab laug thiab sab xis, thiab cov kua dej yuav tsum tau tso cai kom dhau los ntawm qhov chaw nres nkoj valve los ntawm hauv qab mus rau sab saum toj, kom cov dej tsis kam yog me me (txiav txim siab los ntawm cov duab), qhib yog kev txuag hluav taws xob (vim qhov nruab nrab siab yog nce), thiab qhov nruab nrab tsis nias lub ntim tom qab kaw, uas yooj yim rau kev txij nkawm. Qhov no yog vim li cas lub kaw-off valve tsis tuaj yeem ntsia tau rov qab. Lwm cov li qub kuj muaj lawv tus yam ntxwv.
Qhov chaw ntawm lub valve installation yuav tsum yooj yim rau kev khiav lag luam; Txawm hais tias lub installation yog ib ntus nyuaj, nws tseem yuav tsum tau xav txog kev ua haujlwm ntev ntawm tus neeg teb xov tooj. Nws yog qhov zoo tshaj plaws los ua kom lub valve handwheel nrog lub hauv siab (feem ntau 1.2 meters deb ntawm lub hauv pem teb ua haujlwm), kom nws yooj yim rau qhib thiab kaw lub valve. Lub handwheel ntawm lub hauv pem teb-sawv valve yuav tsum tig upward, tsis tilted, kom tsis txhob ua txawv txawv. Rau cov li qub tiv thaiv phab ntsa lossis cov khoom siv, kuj yuav tsum muaj chaw rau cov neeg ua haujlwm sawv ntsug. Tsis txhob ua haujlwm nrog koj lub taub hau tilted, tshwj xeeb tshaj yog nrog cov kua qaub, alkali, tshuaj lom neeg, thiab lwm yam, txwv tsis pub nws tsis zoo heev.
Tsis txhob nruab lub rooj vag valve upside down (xws li lub tes log yog downward), txwv tsis pub lub nruab nrab yuav nyob twj ywm nyob rau hauv lub valve npog qhov chaw rau lub sij hawm ntev, uas yog ib qho yooj yim rau corrode lub valve qia thiab yog taboo rau tej yam txheej txheem yuav tsum tau. Nyob rau tib lub sijhawm, nws tsis yooj yim heev los hloov cov ntim khoom.
Qee qhov kev teeb tsa valve yuav tsum tau them sai sai rau cov hauv qab no:
1. Lub siab txo valve yuav tsum tau muab ntsia rau ntawm txoj kab rov tav, thiab yuav tsum tsis txhob qaij nyob rau hauv tag nrho cov lus qhia.
2. Thaum txhim kho lub lifting check valve, xyuas kom meej tias nws valve disc yog ntsug thiaj li hais tias nws yuav tsum tau nqa thiab txo flexibly.
3. Thaum txhim kho lub viav vias kos valve, xyuas kom meej tias nws tus pin ncej yog kab rov tav kom nws tuaj yeem hloov tau yooj yim.
4. Tsis txhob nruab qhov nce qia rooj vag valve hauv av, txwv tsis pub lub qia valve yuav raug corroded vim ya raws.
Kev xaiv ntawm txoj haujlwm thiab kev taw qhia thaum txhim kho lub valve
Qhov chaw uas lub valve raug ntsia yuav tsum yooj yim rau kev ua haujlwm; Txawm hais tias lub installation yog ib ntus nyuaj, nws yuav tsum tau txiav txim siab rau kev ua haujlwm ntev ntawm tus neeg teb xov tooj. Nws yog qhov zoo tshaj plaws los ua kom lub valve handwheel nrog lub hauv siab (feem ntau 1.2 meters deb ntawm lub hauv pem teb ua haujlwm), kom nws yooj yim rau qhib thiab kaw lub valve. Lub handwheel ntawm lub hauv pem teb-sawv valve yuav tsum tig upwards, tsis tilted, kom tsis txhob ua hauj lwm txawv txawv. Rau cov li qub tiv thaiv phab ntsa lossis cov khoom siv, kuj yuav tsum muaj chaw rau cov neeg ua haujlwm sawv ntsug. Tsis txhob ntsia saum ntuj, tshwj xeeb tshaj yog rau cov kua qaub, alkali, toxic media, thiab lwm yam, txwv tsis pub nws yuav tsis zoo heev.
Tsis txhob nruab lub rooj vag valve upside down (uas yog, handwheel yog tig down), txwv tsis pub lub nruab nrab yuav nyob twj ywm nyob rau hauv lub valve npog qhov chaw rau lub sij hawm ntev, uas yog ib qho yooj yim rau corrode lub valve qia thiab yog taboo rau tej yam txheej txheem yuav tsum tau. Nyob rau tib lub sijhawm, nws tsis yooj yim heev los hloov cov ntim khoom. Tsis txhob nruab qhov nce qia qhov rooj valve hauv av, txwv tsis pub lub qia valve yuav raug corroded vim ya raws.
Thaum txhim kho lub lifting check valve, xyuas kom meej tias nws lub valve disc yog ntsug kom nws tuaj yeem nqa tau thiab txo qis.
Thaum txhim kho lub viav vias kos valve, xyuas kom meej tias nws tus pin ncej yog kab rov tav kom nws tuaj yeem hloov tau yooj yim.
Ntau lub li qub muaj cov kev taw qhia, xws li nres li qub, lub throttle li qub, lub siab txo li qub, kos li qub, thiab lwm yam. Yog tias lawv tau teeb tsa upside down, nws yuav cuam tshuam rau kev siv thiab lub neej (xws li throttle li qub), lossis nws yuav tsis ua haujlwm ntawm tag nrho (xws li lub siab txo li qub), lossis tseem ua rau muaj kev phom sij (xws li kos li qub). Feem ntau, li qub muaj cov cim taw qhia ntawm lub cev valve; yog tias tsis muaj kev taw qhia taw qhia, nws yuav tsum raug txheeb xyuas raws li txoj cai ua haujlwm ntawm lub valve.
Lub valve kab noj hniav ntawm qhov nres valve yog asymmetrical ntawm sab laug thiab sab xis, thiab cov kua dej yuav tsum tau tso cai kom dhau los ntawm qhov chaw nres nkoj valve los ntawm hauv qab mus rau sab saum toj, kom cov dej tsis kam yog me me (txiav txim siab los ntawm cov duab), qhib yog ua haujlwm- txuag (vim qhov nruab nrab siab yog nce), thiab qhov nruab nrab tsis nias lub ntim tom qab kaw, uas yooj yim rau kev txij nkawm. Qhov no yog vim li cas lub nres valve tsis tuaj yeem ntsia tau rov qab. Lwm cov li qub kuj muaj lawv tus yam ntxwv.
Lub siab txo valve yuav tsum tau muab ntsia rau ntawm txoj kab rov tav, thiab yuav tsum tsis txhob qaij nyob rau hauv tag nrho cov lus qhia.