LIQUID CLEANING FILTER Russian patent published in 1995 - IPC

FIELD: sanitary engineering. SUBSTANCE: liquid cleaning filter uses casing with inlet and outlet connections, filter element of flexible-elastic medium and means for compression of filter element made as a stack of rings aligned for movement on the central perforated pipe connected to outlet connection and coated with lasting film, furnished with holes on the sides of inlet and outlet of liquid being filtered; positioned between rings are distance taper washers with a bulge in the central part that are also movable in the axial direction; each ring to the inside diameter is secured to two adjacent washers, and the means for compression of filter element is a hollow toroid with a compression spring, made of flexible material and positioned in the top part between washer and casing cover; the toroid space is connected to inlet connection and communicates with the atmosphere. EFFECT: enhanced quality of cleaning. 4 dwg