DISC VACUUM FILTER Russian patent published in 2016 - IPC B01D33/21 B01D29/39 

FIELD: machine building.

SUBSTANCE: invention relates to disc vacuum filters and may be used in mining, coal, chemical, metallurgical and other industries for filtration of suspensions. Disc vacuum filter comprises filtration plates, consisting of independent sectors secured on hollow bearing sectioned shaft, having distributing heads at ends and trunnions located in bearings installed in suspension bath bed, and shaft drive. Shaft sections and heads are made in form of combined structure in form of steel welded frame, connected with frame made from cast polyurethane, from which channels and heads are formed as one piece. In end bearings one part of sliding pair is made from metal, preferably of cast iron, and other one is from wear-resistant polymer. Wear-resistant polymer used are of hot curing pre-polymers based on polyester P-6 or OMA 1950 (polyethyleneglycol adipate with molecular weight of 2,000), connected with 2-4-toluene diisocyanate. In distribution head periods of time ratio (channels openings sectors areas) of vacuuming and blowing is increased from 14:1 to 30:1.

EFFECT: increased efficiency of vacuum filter, increased service life of filter, lower filter metal input, reduced repair works labor intensity.

3 cl, 1 dwg