PRESSURE FILTER Russian patent published in 2007 - IPC B01D24/10 

FIELD: mechanical engineering; cleaning of natural and sewage waters.

SUBSTANCE: invention is designed for cleaning waters by filtering. It can be used for cleaning waters from colloid, nonsoluble suspended organic and mineral substances. Cylindrical-conical shells are installed inside filter housing for vertical displacement relative to each other. Cylindrical perforated tube is placed in center of shells. Said tube is made telescopic and detachable, its upper end is secured on conical part of upper shell and is connected, through central hole and shell and bellows, with unit to supply influent water and let out wash water. Lower end of perforated tube is rigidly secured on conical part of lower shell. Filtering charge with density smaller than density of water is located between perforated tube and side cylindrical surfaces also made perforated. Use of proposed design of pressure filter improves efficiency of cleaning of natural and sewage waters owing to directed formation of integranular porosity of granulated foamed polysterene over radius of filter in direction of filtration of water of water flow by cylindrical and conical shells movable in vertical direction relative to housing and relative to each and pressed to each other.

EFFECT: improved cleaning of water.

2 cl, 2 dwg