Umshini wokukhipha amanzi we-Screw sludge, owaziwa nangokuthi umshini wokukhipha amanzi ngezikulufu, okokusebenza kokwelapha udaka, i-sludge extruder, i-sludge extrator, njll.iwuhlobo lwemishini yokuhlanza amanzi esetshenziswa kabanzi kumaphrojekthi kamasipala wokuhlanza indle kanye nezimboni zezimboni ezifana ne-petrochemical, imboni ekhanyayo, i-chemical fiber, ukwenza iphepha, imithi, isikhumba njalonjalo.Ezinsukwini zakuqala, isihlungi sesikulufa sasivinjiwe ngenxa yesakhiwo sokuhlunga.Ngokuthuthuka kobuchwepheshe bokuhlunga okuvunguzayo, kwavela ukwakheka kwesihlungi esisha.I-prototype yemishini yokuhlunga okuvunguzayo enesakhiwo sokuhlunga indandatho eshukumisayo futhi engaguquki - i-cascade spiral sludge dehydrator yaqala ukwethulwa, engagwema kahle izinkinga ezibangelwa ukuvinjwa, futhi ngenxa yalokho yaqala ukukhuthazwa.I-spiral sludge dehydrator isetshenziswe kakhulu emikhakheni eminingi ngenxa yezimpawu zayo zokuhlukanisa kalula nokungavimbi.