Patent ID: 9486726
Filing Date: 2016-11-08
CPC Classification: A61C,B01D

Claim Text:
1. A device for settling particles from waters that comes out of plants that produce waste waters with hazardous components, comprising: a housing having a cylindrical sidewall, an open top, a closed bottom wall, and a medial conical structure extending upwardly from the closed bottom wall, wherein a bottom end of the medial conical structure has a larger diameter than upper portions of the medial conical structure; a filter head for closing the upper open end of the cylindrical housing, wherein the filter head includes a cylindrical wall that extends coaxially within the cylindrical sidewall of the housing, wherein an interior space within the cylindrical sidewall of the filter head defines a filtration chamber, the filter head including two inlet passages symmetrically arranged on opposite sides of the cover and extending from an exterior of the filter head to a first annular space located between the cylindrical sidewall of the housing and the cylindrical wall of the filter head, the filter head including an exit passage extending from an exterior of the cover to an upper portion of the filtration chamber, the cylindrical wall of the filter head having a bottom portion that flares radially outwardly toward an inner surface of the cylindrical sidewall of the housing, wherein the flared bottom portion includes at least one wing that extends in a spiral manner around an outer surface of the flared bottom portion for generating cyclonic movement in water flowing downwardly through the first annular space from the inlet passages, wherein a separation chamber is defined below the bottom end of the cylindrical wall of the filter head and bounded by the cylindrical sidewall of the housing, the bottom wall of the housing, and an outer surface of the medial conical structure; and a cylindrical filter element having an upper section and a lower section surrounding a hollow interior, wherein the filter element is located within the filtration chamber such that a second annular space is provided between an inner surface of the cylindrical wall of the filter head and an outer surface of the filter element, wherein the upper section is positioned adjacent the exit passage and the lower section has a bottom end that is closed and that is supported by an upper end of the medial conical structure, and wherein the upper section has a pore size that is different from a pore size of the lower section.