Patent ID: 8354031

Claim:
A liquid filtering system comprising: a vertical cylindrical outer casing having a first base and a second base opposite to the first base; filtering elements necessary to eliminate solid impurities in different successive phases, the filtering elements being housed in an interior of the outer casing; a pipe that penetrates tangentially through first base of the outer casing through which liquid to be filtered enters the pipe being extended by a flow adaption piece making a gradual change from a circular section of the pipe to a rectangular section producing circular paths, wherein heavy particles descend and approach a periphery from gravity and centrifuge; an interior collector pipe concentric to the outer casing with a lower outlet proximate the first base for filtered liquid; and a removable watertight lid placed in the second base of the outer casing; a cylindrical mesh panel concentric with the interior collector pipe, the cylindrical mesh panel being intermediate the interior collector pipe and the cylindrical outer casing; a cylindrical package of slotted rings compressed by a spring, the cylindrical package being concentric with the interior collector pipe, the cylindrical package being intermediate the interior collector pipe and the cylindrical mesh panel; and an omega-shaped piece guiding the spring and adapts to an exterior of the interior collector pipe, leaving a chamber of variable volume between the interior collector pipe and the outer casing, the chamber being connected to a lower part of the interior collector pipe by a pipe with a smaller diameter than the interior collector pipe.