FIELD: chemistry.
SUBSTANCE: back-flush filter contains case, which has located on the same axis from opposite sides input and output branch pipes, located perpendicularly to the axis of input and output branch pipes filtration unit with cup and filtering element. Gap of case cavity between input and output coupled branch pipes is blocked by cross member. Case is made with turned out circular centering element, passing on cross member and part of case in zone of input branch pipe, on the centre of which input hole of filtration unit is located. Cup is made with located on its bottom circular centering element and blockable unit of filtered medium discharge and is hermetically fixed on the edge on case. Filtering element is located with one butt end in circular centering element of case, and with the second butt end - in circular filtering element of cup and includes external and internal filtering cylinders. Filtering capacity of external filtering cylinder in terms of value of separated particles is lower than the analogous value of filtering capacity of internal filtering cylinder.
EFFECT: high degree of medium purification.
8 cl, 4 dwg
