Qhov tseem ceeb tshaj plaws kev nyab xeeb yog airlock muaj nuj nqi ntawm cov pob valve. Yog vim li cas rau qhov kev tsim kho yooj yim ntawm cov hnub qub duab dischaging feeder yog tias muaj nyob loj nyob hauv lub hnub qub puab tawm ntawm qhov chaw pub mis. Thaum airlock teb valve tuaj yeem kho qhov tshem tawm mus rau daim duab me me, piv txwv li, qhov kev rho tawm tuaj yeem hloov kho kom yog 0. 01 hli. Ntxiv mus, inorder kom tau raws li cov conveying effection, lub valve teb kuj ntxiv qhov ceev nrawm thiab chav nrawm, uas ua kom lub qeeb mentshis ua haujlwm muaj peev xwm ua haujlwm tau zoo dua thiab mus txog qhov sib khi zoo dua thaum nce hom sealing ntawm lub ntsej muag cua foob nruab nrab ntawm qhov cuab lub zog ntxiv thiab Lub hau kawg.
Txhawm rau suav, nws tsis tsim nyog siv lub hnub qub cov duab tawm hauv kev xa tawm raws li cov ceg qub. Rau ib qho, lub hnub qub lub cev tsis zoo ntawm lub cev noj haus muaj cov nqi pheej yig dua thiab cov qauv yooj yim nrog rau kev thov hauv lub neej. Yog hais tias tus ua hauj lwm yuav tsum tau cov airlock muaj nuj nqi, koj yuav zoo dua xaiv airlock teb valve .Qhov rooj hauv qab no yog cov ntaub ntawv tsis tu ncua ntawm airlock teb qeeb mentshis:
