FILTER UNIT WITH AUTOMATIC FLUSHING BY BACKFLOW Russian patent published in 2019 - IPC B01D25/26 B01D25/32 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to a filter unit. More specifically, the invention relates to the design of an apparatus for automatically flushing with a return flow of the filtering screen of the filter unit. Filtering unit (40) comprises a filtering element having inner and outer walls arranged around each other such that an inner space is formed between the inner wall and the outer wall, filtering screen dividing inner space into pre-filter chamber and post-filter chamber, wherein at least pre-filter chamber is divided in circumferential direction into sectors in form of compartments, separator (70) is located coaxially with filtering component and has separate distributing columns (72), and rotary distributor (80) of reverse flushing has obturator (82), in which outlet opening (84) is provided, rotary distributor (80) of reverse flow washing is installed with possibility of rotation so that said outlet hole (84) is periodically and selectively brought into communication with each distributing column (72), whereby each distribution column (72) periodically and selectively establishes a communication between outlet opening (84) and corresponding one of sectors. Rotary distributor (80) of reverse flushing is in direct contact with separator (70).

EFFECT: invention provides an improved distribution structure filter.

13 cl, 13 dwg