WATER FILTRATION SYSTEM Russian patent published in 2018 - IPC C02F1/00 B01D27/14 B01D29/50 

FIELD: water treatment.

SUBSTANCE: invention relates to the purification of water and can be used to filter water. Water filtration system (100), includes raw water inlet (100a); clean water outlet (100b); outlet (100c) of purified water; outlet (100d) of waste water; integrated filter cartridge (1) containing a pre-filter cartridge, a fine filter cartridge, an additional filter cartridge and having first port (10a), second port (10b), third port (10c), fourth port (10d), fifth port (10e) and sixth port (10f), water storage device (2), return flow path (101). First port (10a) is connected to inlet (100a) of raw water. Second port (10b) is connected to output (100c) of purified water. Fourth port (10d) is connected to output (100b) of purified water. Fifth port (10e) is connected to outlet (100d) of waste water. Third port (10c) is connected to communication flow path (102). Free end of communication flow path (102) is connected between second port (10b) and outlet (100c) of purified water. Device (2) for storing water is located in at least one of the flow paths connected to outlet (100b) of purified water or sixth port (10f). Return flow path (101) has a first end connected between output (100c) of purified water and second port (10b), and a second end connected between output (100d) of waste water and fifth port (10e).

EFFECT: invention makes it possible to increase the degree of recycling of water and ensure the durability of the filter cartridge.

12 cl, 1 dwg