CARTRIDGE FILTER (VERSIONS) Russian patent published in 2010 - IPC B01D27/14 

FIELD: process engineering.

SUBSTANCE: invention serves to clean fluids of impurities. Filter comprises casing, cartridge grid, purified and initial fluid chamber, tangential inlet branch pipe, porous permeable web separating pre-purified fluid chamber from initial fluid chamber, the former accommodating filtration element. In compliance with first version, porous permeable web represents a hollow cylinder arranged vertically in initial fluid chamber with its bottom end stopped and attached to guide element bottom part inner surface, while its top end is open and communicates its inner space with pre-purified fluid chamber. In compliance with second version, porous permeable web represents two hollow cylinders arranged vertically in initial fluid chamber with cylinder bottom end stopped and attached to guide element bottom part inner surface, while its top end is open and communicates its inner space impermeable web. Inner hollow cylinder top open end communicates with pre-purified fluid chamber. Outer hollow cylinder top end is closed by annular impermeable web.

EFFECT: higher efficiency.

4 dwg