Patent ID: 8425771
Filing Date: 2013-04-23
Classification: C02F,Y02A

Abstract:
1. A portable water purification apparatus comprising: (a) a first chamber having an entrance opening into which water to be purified may be drawn by suction (or negative pressure), and an exit opening, said first chamber being divided into at least two separated compartments, said entrance opening leading to a different compartment from said exit opening, (b) a second chamber into which the water from the first chamber can be forced through an inlet, by a pumping action (or positive pressure), (c) one of the compartments of said first chamber adapted to hold a disinfecting agent, and said second chamber adapted to hold a micro-filter through which water can be forced by said pumping action to an outlet for purified water, and (d) appropriate check valves provided at the entrance in said first chamber, at the inlet to said second chamber, and between each of said at least two separated compartments of the first chamber, to allow passage of water in a direction from the exterior into the first chamber, through said at least two compartments in said first chamber, and into said second chamber, but not in the reverse direction (e) a preliminary filtration filter securable to said first chamber over the entrance opening to said first chamber, said preliminary filtration filter also being threadably securable over the outlet to said second chamber when it is desired to backflush clean water through said preliminary filtration filter to unclog and clean said filter.