SELF-CLEANING FILTER Russian patent published in 2012 - IPC B01D24/28 

FIELD: instrument making.

SUBSTANCE: invention relates to filtering and may be used to clean industrial and domestic waters from suspended matter, organic substances, ions of heavy metals at enterprises of electronic, machine-building, chemical and other industries. A filter comprises a vessel, nozzles to supply and drain a cleaned fluid, a nozzle to discharge foreign inclusions extracted from the fluid, an airlift pump, a filtering medium, two vertical latticed partitions that divide the vessel into three zones: a zone to supply a cleaned fluid, a zone to clean a fluid and a zone to collect the cleaned fluid, a device to wash the filtering medium with a gate valve. The lower part of the central pipe of the airlift pump is equipped with a distribution gate valve with serrated edges swinging on an elastic nozzle fixed on a central pipe of the airlift pump, and equipped with a traction rod to adjust the position inside the vessel. On the inner surface of the distribution gate valve there is piping connected via a flexible hose to a system of compressed air or gas supply. Piping is equipped with nozzles, the output holes of which are directed to the bottom of the vessel.

EFFECT: higher efficiency of a filter, improved quality of separation of foreign admixtures from a filtering medium.

2 cl, 3 dwg