FILTER FOR LIQUID PURIFICATION (VERSIONS) Russian patent published in 2015 - IPC B01D35/02 C02F1/28 

FIELD: chemistry.

SUBSTANCE: filter is disclosed in two versions and comprises a filter element placed in a trough 2 with a protrusion 3, a recess 4 and a channel 5 at the bottom (first version) or a trough with a flat bottom (second version). The filter element consists of a supporting-clamping structure and a filter stack 6. The supporting-clamping structure prevents the filter stack from floating and sinking by fixing the edges thereof and prevents deformation of the working surface thereof. The supporting-clamping structure is made from a composite and includes vertical rods with an external thread anchored in the protrusion 3, a supporting lower grid 18 placed on the recess 4 while overlapping the channel 5, clamping 12 and 13 and supporting 14 and 15 beams, tubular compensating supports 16, a clamping upper grid 17, tension nuts 9 and 10. The beams, supports, upper grid and filter stack 6 by its edges sit on the rods 7. The filter stack 6 rests on the grid 18 by its working surface, and its edges are pressed by the beams 12 and 13 to the protrusion 3 and are fixed by nuts. The grid 17 lies on the filter stack 6 horizontally in a stable manner in order to be pressed between the beams 14 and 15, supported by the supports 16 which compensate excess difference in thickness of the filter stack 6 in the initial and pressed states, and fixed by nuts 9.

EFFECT: high efficiency and repairability of the filter, easy assembly and dismantling, easy maintenance.

14 cl, 4 dwg