Portable water purification system with double piston pump
First Claim
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1. A water purification system, comprising:
- a reverse osmosis filter having a feed water input, a concentrate output and a permeate output; and
a pump system comprising;
(A) a feed water pumping section for inputting feed water to said feed water input, said feed water pumping section including a feed water cylinder, a feed water piston disposed to move axially in said feed water cylinder, a feed water intake means for connecting a feed water source to said feed water cylinder, and feed water inputting means connecting said feed water cylinder to said feed water input;
(B) a concentrate pumping section for removing concentrate from said concentrate output, said concentrate pumping section including a concentrate cylinder, a concentrate piston axially disposed in said concentrate cylinder, and a concentrate intake means connecting said concentrate cylinder to said concentrate output; and
(C) means for connecting said feed water inputting means with said feed water input without communicating with said concentrate pumping section, said filter and said pump system being constructed and arranged such that said feed water piston is caused to move in an axial direction by a control that causes said concentrate piston to move in an opposite axial direction.
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Abstract
A portable water purification system has a prefiler, a pumping unit, a reverse osmosis unit, a microbial control unit and a post filter for removing nuclear, biological, chemical and other contaminants from a water source. The hand operated pumping unit has a feed water cylinder and a concentrate cylinder to control ratios between intake and concentrate volumes. The system further prolongs the life of components by reducing the level of contaminants in contact with parts of the system.
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Citations
8 Claims
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1. A water purification system, comprising:
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a reverse osmosis filter having a feed water input, a concentrate output and a permeate output; and a pump system comprising;
(A) a feed water pumping section for inputting feed water to said feed water input, said feed water pumping section including a feed water cylinder, a feed water piston disposed to move axially in said feed water cylinder, a feed water intake means for connecting a feed water source to said feed water cylinder, and feed water inputting means connecting said feed water cylinder to said feed water input;
(B) a concentrate pumping section for removing concentrate from said concentrate output, said concentrate pumping section including a concentrate cylinder, a concentrate piston axially disposed in said concentrate cylinder, and a concentrate intake means connecting said concentrate cylinder to said concentrate output; and
(C) means for connecting said feed water inputting means with said feed water input without communicating with said concentrate pumping section, said filter and said pump system being constructed and arranged such that said feed water piston is caused to move in an axial direction by a control that causes said concentrate piston to move in an opposite axial direction. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A water purification system, comprising:
- a reverse osmosis filter having a feed water input, a concentrate output and a permeate output; and
a pump system comprising;
(A) a feed water pumping section for inputting feed water to said feed water input, said feed water pumping section including a feed water cylinder, a feed water piston disposed to move axially in said feed water cylinder, a feed water intake means connecting a feed water source to said feed water cylinder, and feed water inputting means connecting said feed water cylinder to said feed water input;
(B) a concentrate pumping section for removing concentrate from said concentrate output, said concentrate pumping section including a concentrate cylinder, a concentrate piston axially disposed in said concentrate cylinder, and a concentrate intake means connecting said concentrate cylinder to said concentrate output;
wherein feed water enters said feed water cylinder from said feed water source through said feed water intake means when said feed water piston axially moves in said feed water cylinder in a first direction; andwherein feed water exits said feed water cylinder to said feed water input through said feed water inputting means when said feed water piston axially moves in said feed water cylinder in a second direction opposite said first direction, said pump system further comprising feed water control means connected to said feed water intake means and said feed water inputting means for controlling flow of feed water entering and exiting said feed water cylinder such that a portion of the feed water entering said feed water input through said feed water inputting means returns to said feed water cylinder when said feed water piston moves in said first direction, such that a portion of permeate passes through said reverse osmosis membrane due to regular osmosis and, lower pressure caused by said feed water returning to said feed water cylinder.
- a reverse osmosis filter having a feed water input, a concentrate output and a permeate output; and
Specification