Cholekanitsa ulusi

Zipangizo zopangira zomwe zimakonzedwa ndi hydraulic pulper zimakhalabe ndi tinthu tating'onoting'ono ta mapepala tomwe sitinamasulidwe konse, kotero ziyenera kukonzedwanso. Kukonza ulusi wowonjezera ndikofunikira kwambiri kuti mapepala otayidwa awoneke bwino. Kawirikawiri, kusweka kwa pulp kumatha kuchitika poswa ndi kuyeretsa. Komabe, mapepala otayidwa ayamba kale kusweka, ngati amasulidwanso mu chipangizo chosweka, adzagwiritsa ntchito magetsi ambiri, kuchuluka kwa zida zomwe zimagwiritsidwa ntchito kudzakhala kochepa kwambiri ndipo mphamvu ya pulp imachepetsedwa ndi ulusi wodulidwanso. Chifukwa chake, kusweka kwa mapepala otayidwa kuyenera kuchitika bwino popanda kudula ulusi, cholekanitsa ulusi pakadali pano ndiye chida chomwe chimagwiritsidwa ntchito kwambiri pokonza mapepala otayidwa. Malinga ndi kapangidwe ndi ntchito ya cholekanitsa ulusi, cholekanitsa ulusi chingagawidwe m'magulu awiri: cholekanitsa ulusi umodzi ndi cholekanitsa ulusi wambiri, chomwe chimagwiritsidwa ntchito kwambiri ndi cholekanitsa ulusi umodzi.

Kapangidwe ka single effect fiber separator ndi kosavuta kwambiri. Chiphunzitso cha ntchito yake ndi ichi: slurry imayenda kuchokera kumapeto ang'onoang'ono a m'mimba mwake pamwamba pa chipolopolo cha mawonekedwe a cone ndikupopedwa motsatira njira yolunjika, kuzungulira kwa impeller kumaperekanso mphamvu yopopera yomwe imalola slurry kupanga kuyenda kwa axial ndikupanga kuyenda kwamphamvu kwamadzi, ulusiwo umachotsedwa ndikumasulidwa pakati pa mkombero wa impeller ndi m'mphepete mwa pansi. Mphepete mwakunja kwa impeller ili ndi tsamba lolekanitsa lokhazikika, lomwe silimangolimbikitsa kulekanitsa ulusi komanso limapanga kuyenda kosasunthika ndikusaka mbale yotchinga. Slurry yopyapyala idzaperekedwa kuchokera ku chogwirira cha skrini kumbuyo kwa impeller, zonyansa zopepuka monga pulasitiki zidzakhala zozungulira pakati pa chivundikiro chakutsogolo ndikutulutsidwa nthawi zonse, zonyansa zolemera zimakhudzidwa ndi mphamvu ya centrifugal, kutsatira mzere wozungulira pakhoma lamkati kupita ku doko la sediment pansi pa m'mimba mwake waukulu kuti zitulutsidwe. Kuchotsa zonyansa zopepuka mu cholekanitsa ulusi kumachitika nthawi ndi nthawi. Nthawi yotsegulira ya valavu yotulutsa iyenera kutengera kuchuluka kwa zonyansa zopepuka muzinthu zopangira mapepala otayira. Cholekanitsa ulusi umodzi chiyenera kuonetsetsa kuti ulusi wa pulp wamasulidwa mokwanira ndipo zonyansa zopepuka sizingasweke ndikusakanikirana ndi zonyansa zazing'ono. Komanso njirayi iyenera kulekanitsa mafilimu apulasitiki ndi zonyansa zina zopepuka nthawi yochepa kuti zitulutse bwino ndikubwezeretsa bwino cholekanitsa ulusi, nthawi zambiri, valavu yotulutsira zonyansa zopepuka imayendetsedwa yokha kuti itulutse kamodzi mphindi 10 mpaka 40 zilizonse, masekondi 2 mpaka 5 nthawi iliyonse ndi yoyenera, zonyansa zolemera zimatulutsidwa maola awiri aliwonse ndipo pamapeto pake zimakwaniritsa cholinga cholekanitsa ndikuyeretsa ulusi wa pulp.