METHOD AND INSTALLATION FOR REDUCING LAYER THICKNESS OF FILTER MATERIAL OF DISK FILTER Russian patent published in 2017 - IPC B01D33/21 B01D33/46 

FIELD: textiles, paper.

SUBSTANCE: invention relates to disk filters comprising two or more filter discs in which the filter material layer deposited on the filter surface is used for help in the suspension solid inclusions filtration. The invention is particularly suitable for cauterisation sludge filtering in the chemical pulp and paper industry. A method for reducing the filter material layer thickness accumulated on the disk filter surface from the suspension solid substances in the disk filter basin is that the noted disk filter has two or more filter disks placed on the shaft, and between them there is at least one discharge tray provided with a scraper on both sides, the scraper will scrape the filter cake filtered out of the suspension on the filter surfaces of the filter disks in the discharge tray by the noted scraper, the thickness of the filter material layer on the filtering surface is being decreased by reducing the distance between the scrapers tips and the filter surface, reducing the thickness of the filter material layer is carried out for the two filter material layers on the filter surface of the filter disks on the both sides of the discharge tray not at the same time.

EFFECT: invention provides a significant reduction in change of the production filter flow on each discharge tray, as well as the overall production flow, simplified filter structure, fewer parts requiring maintenance inside the machine.

14 cl, 4 dwg