Patent ID: 11857899
Assignee: PLAS-FIT LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A filtering apparatus having a filtering mode and a self-cleaning mode, the apparatus provided for filtering an upstream flowing fluid with filtering elements in the form of a plurality of stackable discs during filtering mode utilizing a first flow direction, apparatus also configured to self-clean said filtering elements with said upstream flowing fluid during self-cleaning mode utilizing a second flow direction, the apparatus encased within a housing including an internal fluid diverter for controlling the flow through said housing, a central spine assembly for housing said plurality of stackable discs, and a piston assembly for controlling the configuration of said plurality of disc filters along said disc filer spine;
a. said housing comprising at least three openings to allow said first flow direction during filtering mode, and said second flow direction during self-cleaning mode, said at least three openings including an inlet opening for receiving upstream unfiltered fluid, an outlet for receiving downstream filtered fluid and a flush exit for removing filtered waste materials, wherein the flow through said housing between said openings is controlled by the position of a fluid diverter disposed internal to the housing;
b. said spine assembly provided for holding said plurality of filtering elements both in a stacked configuration during filtration mode and an un-stacked configuration during self-cleaning mode; said spine assembly having a first end and a second end; said spine assembly associated at the first end with the piston assembly, the piston assembly having a closed configuration during filtration mode, and an open configuration during self-cleaning mode; wherein the closed configuration of said piston assembly provides for maintaining said filtering elements in a stacked formation along the length of said spine during filtration; and wherein said piston assembly open configuration provides for un-stacking said filtering elements during self-cleaning mode to facilitate flushing waste materials through said flush exit; wherein said piston assembly is actuated by the position of said fluid diverter;
c. said spine assembly is associated at the second end with said fluid diverter provided in the form of a valve body; wherein said fluid diverter is controlled externally to said housing with a controller; said fluid diverter having two states for actuating between filtering mode and self-cleaning mode, the fluid diverter having a dedicated aperture in fluid communication with a peripheral channel utilized during self-cleaning mode, said dedicated aperture is configured to receive a flowing fluid that is diverted to said peripheral channel and into a plurality of spine legs of said spine assembly wherein said spine legs have orifices defined along its length, said orifices are used to jet fluid so as to clean said plurality of disc filters; and
d. a bi-directional flow motor that is configured to run on available upstream flowing fluid for controlling said controller and therein the position of said fluid diverter, wherein said bi-directional motor is coupled to said housing along said upper portion and is functionally associated with said fluid diverter; wherein said bi-directional flow motor comprises:
i. a housing adapted to be securely coupled to an upper portion of said filter housing;
ii. said housing featuring at least two flow inlet and at least one flow outlet; wherein a first inlet provides fluid flow for clockwise rotation and a second inlet provides fluid flow for counter-clockwise rotation;
iii. a flow turbine module configured to for receiving said flowing fluid from one of said at least two flow inlets; and
iv. wherein said flow turbine module is functionally coupled with a fluid diverter adaptor that is functionally coupled with said internal fluid diverter so as to rotate said fluid diverter in the clockwise or counterclockwise directions.