 |
Description  |
|
|
DESCRIPTION
Technical Field
This invention relates to water purification systems and, in particular, to
a personal portable water purifier.
Background of the Prior Art
As the environment becomes more polluted, and lakes, rivers and streams
become endless cesspools, a camper or hunter soon realizes the necessity
for carrying his own personal supply of water to avoid the necessity of
exposing himself to the dangers of drinking polluted water.
Various practices have become commonplace in searching for drinking water,
including boiling the water prior to drinking, and dissolving iodoform
tablets into the water. Boiling water requires time and equipment, neither
of which may be available when the water is required. In addition, the
water tastes flat as a result of the boiling. The iodoform tablets produce
an undesirable taste and have traditionally been unpopular for that
reason. Other water purification devices have been either too large or too
heavy or have rendered the water quite distasteful. Some apparatus have
limited capacity and can allow the passage of water even when its
purification capacity is exhausted, and allowing a user to drink
contaminated water without knowledge of that fact.
Summary of the Invention
Therefore, an object of the subject invention is a portable water purifier
with a product that is pleasant to the taste.
Another object of the subject invention is a water purifier with a capacity
to purify and disinfect the water greater than the filtering capacity of
the purifier.
Still another object of the subject invention is a portable water purifier
which may be stored and periodically used for periods up to a year while
retaining its effectiveness.
These and other objects are attained in accordance with the present
invention wherein there is provided an elongated tube which may be capped
at both the inlet and outlet ends, with filter and purification materials
intermediate. Bactericidal resin particles purify the water while a
granular absorbent material, such as activated carbon and the like,
adsorbs the other impurities which produce odor and taste. Filter media
within the tube removes substantially all suspended particle matter in the
water, resulting in clear, purified water emanating from the tube.
Brief Description of Several Views of Drawings
Further objects of the invention together with additional features
contributing thereto and advantages accruing therfrom will be apparent
from the following description of one embodiment of the invention when
read in conjunction with the accompanying drawings wherein:
FIG. 1 is a perspective view of one embodiment of the subject invention;
FIG. 2 is a cross-sectional view taken along lines 2--2 of FIG. 1 showing
the internal components of the water purifier of the subject invention.
Detailed Description
Referring now to FIG. 1, there is shown the water purification apparatus 10
comprising one embodiment of the invention. The water purification
apparatus comprises a long, slender tube which may be formed of either
glass, plastic or metal as desired. The tube is much in the nature of a
drinking straw having a diameter of such size for insertion into a user's
mouth for applying suction. As shown in FIG. 2, the tubing is preferably
formed of plastic allowing it to be formed of inexpensive material. If
desired, the plastic may be transparent polycarbonate in order to provide
a visual sighting of the contents of the tube. In this manner, through
change in color and other means of indication, it would be possible to
provide a visual reference of the effectiveness of the purifying and
filtration agents in the tube 25.
As shown in FIG. 2, the tube 25 has an inlet 12 and an outlet 18. The inlet
12 has perforations 21 which allow the flow of water into the tube 25
while retaining the filtration material 13 inside the tube. Similarly,
perforations 22 allow the flow of purified water from the tube while
retaining the filtration material 17 inside. Caps 20 and 19 are attached
by straps 27 and 26, respectively, to the tube ends 12 and 18 and may be
used for preventing leakage when the purifier of the subject invention is
not in use, while additionally keeping the mouthpiece 18 clean. As stated,
the inlet cap 12 has perforations 21 to allow the easy flow of water into
the tube 25. Adjacent inlet cap 12, inside the tube, is a primary filter
material such as polyester filter fiber, which removes much of the
suspended particlate matter in the incoming water. Other filtering agents
or materials may be used as found appropriate. Adjacent the primary filter
material 13 is purifying medium 14. Preferably, the purifying medium 14 is
an iodinated cation exchange resin capable of purifying and disinfecting
the incoming water, thereby instantaneously killing harmful bacteria as
the water comes into contact with the resin. Commercially, an appropriate
purifying medium is generally known as triiodide resin. Other bactericidal
mediums may be used as desired.
Adjacent the purifying resin 14 is a secondary or intermediate filtration
area containing filtration material 15 similar to the filtration material
13. If desired, filtration material 15 may provide a finer mesh size for
screening out smaller particles.
Adjacent the second filtration area 15 is a granular absorbent material
having a large surface area, such as activated carbon and the like, which
can adsorb impurities, organic liquids, gases, tastes and odors, making
the water palatable. As is known, certain other hydrocarbon material which
may pass through the purifying material 14 will be adsorbed onto the
activated carbon. A final segment of filter media 17 removes substantially
all the remaining particulate matter prior to the exit of the now-cleansed
water through end cavity 18. As with the intermediate filter material, a
finer mesh size than the primary filter material may be used. On passing
through each of the filter areas and the purifying and adsorbing material
results in a crystal-clear, bacteria- and virus-free, good tasting water,
when used with a non-saline source. According to tests required under
Federal Law, water containing 200,000-300,000 escherichia-coli
micro-organisms per milliliter has been run through the water purification
unit of the subject invention and the effluent from the unit contains less
than one micro-organism per 100 milliliters. In addition, the subject
invention has been tested with raw sewage, river water, urine, etc., in
all cases, a clear, colorless, good tasting bacteria- and virus-free water
was the final product.
In the use of the subject invention, the end caps 19 and 20 are removed
from opposing end portions 12 and 18, respectively, and the inlet portion
12 is inserted into the source of water, such as a pond or river. The user
places his mouth over the mouthpiece 18 and, much as in the nature of a
straw, sucks the water inward, past the filtering and purifying media
within, into his mouth. Since a majority of the tube is filled with a
purifying medium 14 and the adsorbent medium 16, the useful life of the
subject invention is determined principally by the length of time and
periods of use required for the inlet filter 13 to become clogged. Thus,
unless contaminated water with relatively little suspended particle matter
is a constant source for purification through the subject invention, the
inlet filter 13 will be clogged long before the purifying capacity of the
tube of the subject invention is exhausted. With the clogging of the inlet
filter 13, there can be no passage of water through the tube 25 and the
user will realize that the usefulness of the tube of the subject invention
has been spent and should be discarded at that time. Because of the
inexpensive nature of the subject invention, it is disposable in nature
and, therefore, may then be tossed into the nearest waste receptacle.
While the invention has been described with reference to a preferred
embodiment, it will be understood by those skilled in the art that various
changes may be made and equivalents may be substituted for elements
thereof without departing from the scope of the invention. In addition,
many modifications may be made to adapt a particular situation or material
to the teachings of the invention without departing from the essential
scope thereof. Therefore, it is intended that the invention not be limited
to the particular embodiment disclosed as the best mode contemplated for
carrying out the invention, but that the invention will include all
embodiments falling within the scope of the appended Claims.
* * * * *
|
|
 |
|
 |
Description |
|
