FILTERING DEVICE Russian patent published in 2022 - IPC B01D35/12 B01D29/66 

FIELD: filtering equipment.

SUBSTANCE: invention relates to a filtering device for purifying a liquid flow from contaminating particles. The filtering device contains a set of filtering elements, which are installed in filtering chambers (12, 14) as a component of common filter case (10) and are grouped around backwash device (20), which contains a piston battery for receiving backwash volume, in a case of which a piston is installed with the possibility of longitudinal movement, which, being controlled by working fluid transmitting pressure, is made with the possibility of directing backwash volume stored in the battery case to at least one filtering element to be backwashed for its purification via backwash device (20) also made with the possibility of removing backwash volume from the filtering device. A certain filtering element made in the form of a bypass filtering element and selected from the set of filtering elements is made with the possibility, after actuating switching device (18), of performing exclusively purification from particles, while other filtering elements are excluded from this purification. Switching device (18) is installed in common case (10).

EFFECT: improvement of thermal modes during the operation of a device, compactness of the device, reliable separation of contaminating particles from liquids.

10 cl, 5 dwg