DRAINAGE AND DISTRIBUTION FILTER SYSTEM Russian patent published in 2017 - IPC B01D24/10 B01D24/38 

FIELD: construction.

SUBSTANCE: filter system with a loose filtering layer comprises an outlet branch pipe connected to the distribution system inside the filter and filter elements in the form of hollow rotation bodies with branch pipes, connected to the distribution system by means of the branch pipes, filter elements of the drainage and distribution system in the form of a cylindrical body with a blind cover from above and the bottom with an opening, equipped with a fitting interfaced with the opening, the housing is made with perforation in the form of openings arranged uniformly along the housing cylinder surface, a mesh with a cell size smaller than the perforation size is arranged on the entire surface of the cylindrical part of the housing, the mesh is installed with a clearance from the housing smaller than the mesh cell size and is fixed along the generatrix between the upper housing part and the hoop-shaped ring and between the lower housing part and the other hoop-shaped ring.

EFFECT: increasing the strength of the drainage distribution system, resistance to hydraulic shocks, shock resistance while being loaded with coarse and heavy filter materials, reducing the clogging and overgrowing, ensuring the uniform filtrate collection.

3 cl, 2 dwg