FIELD: machine building.
SUBSTANCE: filtering element comprises a bottom with an outlet branch pipe in it, a cover, a hollow cylindrical body of specified height with slots-windows distributed evenly and circumferentially or a ring and poles of specified length which are of round, rectangular or segmental section and are evenly distributed along the perimeter of the bottom and the ring; the ring, bottom and poles or the hollow cylindrical body are joined into a solid unit by welding or are produced by precision casting by consumable or investment patterns to form a casing-body of cylindrical form with a thread being made on its surface. The bottom is fitted by an outlet choke line with external or internal connection thread or that for welding, the cylindrical casing-body surface is fitted by metric MJ profile thread or inch thread or metric thread with a specified pitch and coil of wire with specified diameter or section is laid in the recesses of the thread forming equal gaps-slots between the coil turns along the whole height of the cylindrical part. Ends of the coil and its turns are welded to the casing-body and poles respectively. By specifying the thread pitch and coil wire diameter or any section it is possible to obtain the specified width of a filtration slot in the wide range from 0.1 to 2.0 mm. The poles or the cylindrical body can be reinforced by stiffening ribs on the inner side.
EFFECT: long and trouble-free operation.
2 cl, 9 dwg
