FILTER ELEMENT BUILT INTO PROTECTIVE PLUG, MOULD AND SEAL Russian patent published in 2023 - IPC B01D29/23 B01D46/24 

FIELD: filtering.

SUBSTANCE: filter element (200) for purifying fluids having an annular configuration and defining a longitudinal axis (216), a radial direction and a circumferential direction includes an annular filter medium (202) defining a central passage; a central tube (206) installed in the central passage, which forms a central reservoir, and an annular filter medium (202) surrounds the central tube (206) and the central reservoir; an upper open end (220) connected to a central tube (206) disposed along a longitudinal axis (216), the upper open end including an opening from which fluid flows from the central reservoir to the outside of the filter element; a lower end (222) connected to the central tube opposite the upper open end; a built-in sealing element (300) that is attached to the filter element and includes a sealing portion (302) located from the annular filter media and a connecting portion that extends radially from the filter element to the sealing portion. The connecting portion includes an axially flared skirt forming a lower portion and a plurality of flanges that extend axially downwardly and radially outward from the lower portion of the skirt to a sealing portion to define a plurality of flow channels in the form of a plurality of circumferentially flared openings that are circumferentially limited. a pair of several flanges, and in the radial direction - a sealing part and an axially expanding skirt.

EFFECT: ensuring effective compaction.

5 cl, 12 dwg