Compact fluid purification device with manual pumping mechanism

A compact fluid purification device comprising:

• a housing having an inlet for receiving unfiltered liquid and an open end;
• a first valve disposed within the inlet and being configured to only permit unfiltered liquid to flow into a hollow interior of the housing;
• a plunger received within the open end such that it slides within the interior of the housing, the plunger being movable between a fully extended position and a fully retracted position, wherein the plunger has a first housing that includes a first filter element that is open at a distal end of the first plunger housing and are sealed at an opposite end, wherein the plunger housing has a through hole proximate the sealed ends of the first filter element for discharging once filtered liquid after it has been filtered across the first filter element, the plunger including a second housing that has an open end that is sealingly attached to the first plunger housing such that the through hole in the first plunger housing is in fluid communication with an interior of the second plunger housing, the second plunger housing having a second filter element disposed therein and having open ends that are in fluid communication with an outlet through which twice filtered liquid is discharged after being filtered across the second filter element;
• and
• a second valve disposed within the outlet and being configured to only permit twice filtered liquid to be discharged through the outlet.

A compact fluid purification device comprising:

• a housing having an inlet for receiving unfiltered liquid and an open end;
• a first valve disposed within the inlet and being configured to only permit unfiltered liquid to flow into a hollow interior of the housing;
• a plunger received within the open end such that it slides within the interior of the housing, the plunger being movable between a fully extended position and a fully retracted position, wherein the plunger has a first housing that includes a first filter element that is open at a distal end of the plunger housing and is sealed at an opposite end, wherein the plunger housing has a through hole proximate the sealed end of the first filter element for discharging once filtered liquid after it has been filtered across the first filter element, the plunger including a second housing that has an open end that is sealingly attached to the first plunger housing such that the through hole in the first plunger housing is in fluid communication with an interior of the second plunger housing, the second plunger housing a second filter element disposed therein and having an open end that is in fluid communication with an outlet through which twice filtered liquid is discharged after being filtered across the second filter element;
• and
• a second valve disposed within the through hole and being configured to only permit once filtered liquid to be discharged through the through hole into a space in the second plunger housing that surrounds the second filter element.