Filtration unit
OwnerAmikam Horowitzinventor
Life of this patent
Estimating the term…
Abstract
A filtration tank (1) for purification of polluted water includes a chamber (12). Upper and lower filtration screens (20, 22) are supported within the chamber. Filtration particles (18) are confined between the upper and lower screens. Polluted water enters the chamber through an inlet (26), passes through the screens and the filtration particles and exits the chamber through a purified water outlet (28). Periodically, the inlet and outlet are closed and the water in the chamber is drained through a drain outlet (32). Nozzles (42, 45) spray cleaning fluid over the filter particles and screens to dislodge trapped dirt.
Claims21
An apparatus for purification of water, the apparatus comprising:
- a filter chamber;
- a water inlet through which unpurified water enters the chamber;
- a water outlet through which purified water exits the chamber;
- a filter system including:
- a first filtration screen disposed within the chamber adjacent the water inlet,
- a second filtration screen disposed within the chamber adjacent the water outlet, and
- filtration media trapped between the first and second screens, the water inlet, water outlet, and first and second filtration screens configured such that unpurified water entering the tank through the water inlet passes through the first filtration screen, the filtration media and the second filtration screen before exiting the tank through the water outlet;
- a source of cleaning liquid connected with the chamber for selectively supplying cleaning liquid to the chamber to clean the filtration media;
- a drain outlet for selectively draining water from the chamber, the drain outlet sized for rapidly draining the tank to clean the filter system;
- and
- at least one nozzle which selectively directs the cleaning liquid into the chamber wherein the at least one nozzle includes a plurality of spaced nozzles.
An apparatus for purification of water, the apparatus comprising:
- a filter chamber;
- a water inlet through which unpurified water enters the chamber;
- a water outlet through which purified water exits the chamber;
- a filter system including:
- a first filtration screen disposed within the chamber adjacent the water inlet,
- a second filtration screen disposed within the chamber adjacent the water outlet, and
- filtration media trapped between the first and second screens, the water inlet, water outlet, and first and second filtration screens configured such that unpurified water entering the tank through the water inlet passes through the first filtration screen, the filtration media and the second filtration screen before exiting the tank through the water outlet;
- at least one nozzle which directs cleaning fluid upwardly into the chamber from below the first filtration screen;
- and
- a drain outlet for selectively draining water from the chamber, the drain outlet for draining the tank to clean the filter system.
A method of purifying water, the method comprising:
- flowing dirty water through filtration media to filter materials from the dirty water;
- and
- selectively cleaning the filtration media by the steps of:
- trapping the filtration media between upper and lower screens,
- interrupting the flow of dirty water to the filtration media,
- rapidly draining water from around the filtration media, causing the filtration media to drop from a region adjacent the upper screen so that the filtration media hits the lower screen, thereby dislodging the filtered materials therefrom, and
- spraying a cleaning liquid onto the filtration media to wash the filtered materials from the filtration media;
- and
- recommencing the flow of dirty water to the filtration media.
A method of purifying water, the method comprising:
- flowing dirty water through filtration media to filter materials from the dirty water;
- and, selectively cleaning the filtration media by the steps of:
- interrupting the flow of dirty water to the filtration media;
- rapidly draining water from the filtration media, thereby dislodging the filtered materials therefrom,
- spraying a cleaning fluid onto the lower screen from below the lower screen, and
- recommencing the flow of dirty water to the filtration media.
Dependencies are inferred from the claim text.