Water filter abstract
The present invention is related to a water filter and particularly
to a water filter with a rotary filter tube, comprising a water
filter cylinder and a plurality of filter leaf thimbles so that
there is a maximum filter course in a certain filter space for water
filtering. It is very convenient to replace the filter leaves (thimbles)
outside the water inlet pipe (port).
Water filter claims
What is claimed is:
1. A water filter comprising a water filter cylinder and a plurality
of filter leaf thimbles, wherein the water filter cylinder includes
a housing with water inlet and outlet pipes disposed oppositely
from one another on the housing and a rotary filter tube filled
with a first filter material, one end of the rotary filter tube
being connected to the water inlet pipe, and another end of the
rotary filter tube being disposed oppositely in said housing from
the water inlet pipe, said rotary filter tube being surrounded by
a second filter material which fills the housing of the water filter
cylinder, the water inlet pipe being connectable to more than one
of said filter leaf thimbles.
2. A water filter as claimed in claim 1 wherein the rotary filter
tube comprises a windable and bendable filter tube, and wherein
the filter cylinder further comprises two filter leaf jackets, the
tube body of said rotary filter tube being filled with said first
filter material, and each of said filter leaf jackets being disposed
at an end of said tube body, said rotary filter tube being bendably
wound in the housing.
3. A water filter as claimed in claim 1 wherein at least one of
the filter leaf thimbles comprises a tubular body having first and
second ends, a non-woven cloth filter leaf, a net jacket and a washer,
the inside surface of said first end of the tubular body being threaded,
the outside surface of said second end of the tubular body also
being threaded, said tubular body further comprising a protruding
ring which circumferentially surrounds said tubular body and bears
against said washer, said washer being disposed circumferentially
around said second end, a net frame and said net jacket being installed
in the tubular body such that the non-woven cloth filter leaf is
sandwiched between the net frame and the net jacket, said first
end being capable of threadedly engaging either a second end of
another tubular body or the water outlet pipe of the housing, said
second end of the tubular body being capable of threadedly engaging
a jacket other than said net jacket.
4. A water filter as claimed in claim 1 wherein said first and
second filter materials are the same.
5. A water filter as claimed in claim 1 wherein said first and
second filter materials are not the same.
6. A water filter as claimed in claim 1 wherein at least one of
said first and second filter materials is activated carbon.
7. A water filter as claimed in claim 1 wherein at least one of
said first and second filter materials is an ion-exchange material.
Water filter description
BACKGROUND OF THE INVENTION
The filtration of drinking water in general makes use of a water
filter cylinder filled with filter material (such as active carbon
or ion-exchange resin or other various filter materials) so as to
separate and adhere solid impurity in the water.
The drinking water in the water inlet pipe (port) of water filter
is filtered through natural or chemical fiber cloth or foaming filtration
so as to eliminate larger solid impurity in the water, then enters
into the water filter cylinder filled with filter material and small
solid impurity is adhered by active carbon or ion-exchange resin
or other various filter materials, finally the filtered and clean
water is drained from the water outlet pipe (port) for drinking.
In the foregoing course, the larger solid impurity in the drinking
water gradually accumulates in a filtration layer of water inlet
pipe (port) and the dirt in water tends to block the filtration
layer to decrease effectiveness of filtration. Therefore, manufacturers
adopt a way of flowing water adversely to flush the filtration layer
and eliminate said dirt. One of the examples is Taiwan Application
No. 80203471 titled "An Adversely Flushed Water Filter"
of Mr. Tzu-Fu Lin.
However, it is very difficult for the flushing force of flowing
water adversely to effectively cleanse the dirt adhered to the filtration
layer for a long time. It is proved that we have to manually use
a brush or a detergent and a sterilizing medicine to forcefully
wash and brush the dirt to cleanse a water tower in general, so
the filter material of invention of adversely flushed water filter
of Mr. Tzu-Fu Lin needs to be replaced after it is actually used
for more than six months so as to keep its healthiness.
In the foregoing filtration course of drinking water in general,
the water is filtered through the filtration layer in the water
inlet pipe (port), then through the filter material in the water
filter cylinder which adheres to smaller solid impurity in the water
depending on the direction, course and speed of water flowing. The
longer the water flow course and the slower the water flow speed,
the higher the rate of filter material adhered to the smaller solid
impurity in water, and the better the effectiveness of cleansing
the drinking water.
SUMMARY OF THE INVENTION
In view of above, the present invention offers a water filter and
particularly to a water filter with a rotary filter tube, comprising
a water filter cylinder and a plurality of filter leaf thimbles,
wherein the water filter cylinder consists of a housing with water
inlet and outlet pipes, a rotary filter tube and suitable quantity
of active carbon or ion-exchange resin or other filter materials.
The water inlet pipe is installed on one side of the housing and
the water outlet pipe is installed on another side of the housing.
The rotary filter tube consists of a windable and bendable tube
body, suitable quantity of filter materials and two filter leaf
jackets. The tube body of rotary filter tube is rotatably or bendably
wound in the housing and filled with ion-exchange resin or active
carbon or other filter materials. Inner edge of two ends of tube
body of rotary filter tube is provided with a filter leaf jacket
respectively. One end of rotary filter tube is connected to the
inner end of water inlet pipe, and another end of rotary filter
tube is rotatably extended to the upper or lower end of inner edge
of housing. The periphery of rotary filter tube in the housing is
filled with active carbon or ion-exchange resin or other filter
materials. The outer end of water inlet pipe can be connected to
a plurality of filter leaf thimbles so as to keep the filter leaf
jackets of rotary filter tube in the water inlet pipe clean.
The larger solid impurity in the drinking water is firstly filtered
through a plurality of filter leaf thimbles, and the smaller impurity
in the drinking water is fully adhered to the rotary filter tube
which extends its filtration flow course, the filtered and clean
water flows into the housing, then the water is further purified
by the active carbon or ion-exchange resin or other filter materials
around the rotary filter tube in the housing, and is filtered by
the filter leaf jacket in the water outlet pipe on .another side
of the housing and drained so that the water filtration has a maximum
filter course in a certain filtration space.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a longitudinal section view of the first embodiment
of the present invention.
FIG. 2 shows a breakdown view of the first embodiment of the present
invention.
FIG. 3 shows a breakdown view of filter leaf jacket of the first
embodiment of the present invention.
FIG. 4 shows a breakdown view of filter leaf thimble of the first
embodiment of the present invention.
FIG. 5 shows a longitudinal section view of the second embodiment
of the present invention.
FIG. 6 shows a breakdown view of the second embodiment of the present
invention.
DETAILED DESCRIPTION OF THE INVENTION
Other objects and features of the present invention will become
apparent from a consideration of the following description which
proceeds with reference to the accompanying drawings wherein certain
selected embodiments are chosen to illustrate the invention.
First Embodiment
As shown in FIG. 1 and 2 a water filter 1 comprises a water filter
cylinder 10 and a plurality of filter leaf thimbles 20 wherein
the water filter cylinder 10 primarily consists of a housing 11
a rotary filter tube 12 a leading flow tube 13 and a plurality
of active carbon 14. The bottom side of housing 11 is provided with
a water inlet pipe 111 and the top side of housing 11 is provided
with a water outlet pipe 112 and a filter leaf jacket 123 is installed
in the water inlet pipe 111 and water outlet pipe 112 respectively.
A filter leaf jacket 123 is provided to the inner edge of two ends
121 12 of tube body 120 of rotary filter tube 12 respectively,
and the space between two filter leaf jackets 123 in the tube body
120 is filled with ion-exchange resin 124. As shown in FIG. 3 the
filter leaf jacket 123 consists of a non-woven cloth 1233 sandwiched
between two net jackets 1231 1232. One end 121 of tube body 120
is connected to the outer edge of inner end of water inlet pipe
111 of housing 11. Another end 122 of tube body 120 is connected
to the outer edge of one end of thimble 15. The outer edge of another
end of thimble 15 is connected to the inner edge of one end of leading
flow tube 13. The leading flow tube 13 is an empty tube. Another
end of leading flow tube 13 is extended to the bottom of housing
11. The interior of housing 11 and the periphery of rotary filter
tube 12 and leading flow tube 13 are filled with active carbon 14.
The outer edge of outer end of water inlet pipe 111 is connected
to two filter leaf thimbles 20 which are mutually nested or screwed
together. As shown in FIG. 4 the filter leaf thimble 20 consists
of a tube body 21 a non-woven cloth filter leaf 22 a net jacket
23 and a washer 24. The inner edge of one end of tube body 21 is
provided with a thread, the outer edge of another end of tube body
21 is provided with a corresponding thread and a protruding ring
210. The outer side of protruding ring 210 is provided with the
washer 24. A net frame 211 is installed in the tube body 21. The
non-woven cloth filter leaf 22 is installed in the net frame 211
The net jacket 23 is installed on the outer side of non-woven cloth
filter leaf 22. The rear end of filter leaf thimble 20 is connected
to a jacket 25 which is made of synthetic rubber and elastic and
tensile in favor of being applied into a water faucet or other water
source (not shown in the drawings).
The drinking water flows from a water pipe to the rotary filter
tube 12 and larger solid impurity in water is filtered through two
filter leaf thimbles 20 and then smaller impurity in said water
is eliminated through the ion-exchange resin 124 in the rotary filter
tube 12 then flows into the leading flow tube 13 and flows to
the bottom of housing 11 through the leading flow tube 13 and is
further purified by the active carbon 14 filled in the housing 11
and around the rotary filter tube 12 and leading flow tube 13 to
continuously adhere to the residual smaller impurity in water, and
clean drinking water is rising up to be further filtered through
the filter leaf jacket 123 in the water outlet pipe 112 and drained
from the water outlet pipe 112.
Second Embodiment
As shown in FIG. 5 and 6 a water filter 5 comprises a water filter
cylinder 50 and a filter leaf thimble 60 wherein the water filter
cylinder 50 consists primarily of a housing 51 a rotary filter
tube 52 and a plurality of active carbon 53. A water inlet pipe
511 is provided to one side of the housing 51 and a water outlet
pipe 512 is provided to another side of the housing 51 and a filter
leaf jacket 523 is installed in the water inlet pipe 511 and water
outlet pipe 512 respectively. As shown in FIG. 6 a tube body 520
of the rotary filter tube 52 is shaped as a snake, inner edge of
two ends 521 522 of the tube body 520 is provided with the filter
leaf jacket 523 respectively. The space between two filter leaf
jackets 523 in the tube body 520 is filled with ion-exchange resin
524. One end 521 of tube body 520 is connected to the outer edge
of inner end of water inlet pipe 511 of housing 51. Another end
522 of tube body 520 is extended to the bottom of housing 51. The
interior of housing 51 and the periphery of rotary filter tube 52
are filled with active carbon 53. The outer edge of outer end of
water inlet pipe 511 is connected to a filter leaf thimble 60. The
rear end of filter leaf thimble 60 is screwed to a jacket 61 in
favor of being applied into a water faucet or other water source
(not shown in the drawings).
The second embodiment is a simplified type of the first embodiment,
so a filter leaf thimble and a leading flow tube are omitted. The
rotary filter tube of second embodiment is shaped as a snake. The
function and effectiveness of two embodiments are all the same.
The larger solid impurity in the drinking water is firstly filtered
by the filter leaf thimble but the accumulation of said impurity
for a long time will quickly block the non-woven cloth filter leaf
in the filter leaf thimble. Since the filter leaf thimble is connected
to the outer end of water inlet pipe, it is very quick and convenient
to replace said non-woven cloth filter leaf or thimble. The rotary
filter tube is rotated in the housing to form a long filter course
so that the filter material (ion-exchange resin or active carbon)
in the rotary filter tube has enough time to adhere to the smaller
impurity in the water to become clean water which is further purified
by the active carbon (or ion-exchange resin) in the housing and
around the rotary filter tube and then drained from the water outlet
pipe. Therefore, the primary advantage of present invention is the
longest filter course in a certain filter space for filtering drinking
water.
While the invention has been described substantially with reference
to specific embodiments thereof, it will be understood that changes
and modifications may be made in the structure described and illustrated
without departing from the spirit of the invention or exceeding
the scope of the claims.
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