Lub hauv paus chiv keeb ntawm cov sludge scraper tuaj yeem taug qab rov qab mus rau lub xyoo pua 20th thaum ntxov nyob rau hauv kev kho dej thiab kev tsuas. Thaum xub thawj, sludge scrapers tau tsim los txhim kho cov kev ua haujlwm ntawm cov dej khib nyiab hauv cov dej khib nyiab los yog cov thickeners, yog li hais txog cov teeb meem uas cov tsub zuj zuj ntawm cov khoom tso rau hauv pem teb tank ua rau cov dej tsis zoo thiab txo kev ua haujlwm. Thaum ntxov sludge scrapers featured kuj yooj yim qauv, feem ntau muaj xws li manually tsav scraper hniav thiab txhawb thav ntawv; lawv tau ua tiav cov khoom sib cais- ua kua sib cais los ntawm kev siv cov khoom siv tes ua haujlwm lossis cov cuab yeej siv yooj yim kom khawb cov khoom tso tawm ntawm lub tank hauv pem teb mus rau qhov hluav taws xob tso tawm. Txawm hais tias cov thev naus laus zis koom nrog rau theem pib no tsis yog qhov nyuaj heev, cov scrapers no tau txhim kho kev tsim khoom thiab kev ua haujlwm yooj yim hauv cov txheej txheem xws li dej phwj kho, ntxhia slurry thickening, thiab tailings pov tseg.
Nrog rau kev nce qib ntawm kev lag luam thev naus laus zis, sludge scrapers tau maj mam hloov zuj zus los ua tshuab, automated, thiab ua haujlwm tau zoo. Thaum lub sij hawm nruab nrab - mus rau - lig xyoo pua 20th, kev koom ua ke ntawm hluav taws xob motors thiab ceev txo mechanisms rau hauv cov khoom tsim enabled sludge scrapers ua hauj lwm stably nyob rau hauv lub tank ntawm loj diameters thiab nyob rau hauv tej yam kev mob ntawm ntau dua sludge concentrations. Niaj hnub nimno sludge scrapers tsis tsuas yog muaj peev xwm ua tau zoo sludge paug tab sis kuj tau siv dav hauv ntau qhov chaw, suav nrog cov chaw kho dej phwj, cov chaw kho dej khib nyiab, mining tailings pas dej, thiab tshuaj lom neeg kev lag luam thickeners. Tsis tas li ntawd, kev siv cov kev tswj xyuas ntse, hnav- tiv taus thiab corrosion- cov ntaub ntawv tiv taus, thiab sib txawv -frequency speed control technologies tau ua rau cov cuab yeej txhim khu kev qha, lub zog -ntau, thiab yooj yim los tswj, yog li tsav kev hloov pauv ntawm cov sludge scraper los ntawm cov khoom siv ua haujlwm zoo tshaj plaws rau cov khoom siv zoo. solid{10}}kua sib cais.
