JPH10211954A - Water treatment cartridge, structure of combining cartridge with drink bottle, and water treatment method employing the cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily obtain cleanly treated drinking water out of unclean water everywhere regardless of distance whether it is remote or not, or of environment whether it is inside or outside a house only by carrying a water treatment cartridge with a drink bottle utilizing a PET bottle or the like on the market carried together. SOLUTION: A water treatment cartridge is equipped with a engaging part 4d provided at a case 6 having water treatment means 12a-12c therein for being detachably attached to a mouth 3 of a drink bottle 2 normally distributed in the market for fitting the aforementioned case 6 to the drink bottle 2 and a spouting part 5c provided at the aforementioned case 6 for spouting treated water in the aforementioned case 6 to the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable water treatment cartridge capable of easily purifying, adjusting and / or activating water outdoors or outside, and a portable water treatment cartridge. The present invention relates to a combination structure and a water treatment method using the cartridge.

[0002]

2. Description of the Related Art Most of conventional water purifiers are mainly intended for indoor use, and are installed in series or in parallel between a water pipe and a water faucet. There are a faucet direct connection type that can be attached, and a pumping type that stores tap water or the like in a container to adsorb or evaporate impurities and the like.

As a water purifier that can be carried and used, for example, Japanese Utility Model Registration No. 3017534 discloses a cap for a PET bottle with a cartridge. As shown in FIG. 8, the plastic bottle cap has a porous cartridge 62 containing an activated carbon 61 or the like detachably mounted inside a cap body 63 by screwing. If the cap 64 is screwed into the mouth 66 of the plastic bottle 65 as a cap and fixed, the activated carbon 61 contained in the porous cartridge 62 comes into contact with the water inside the plastic bottle 65, and after a certain period of time, , This water can be purified.

[0004]

The stationary, faucet-directed or pumped-down type water purifiers which are presumed to be used indoors as described above are not considered for outdoor use at all. It is useless in places where there is no water supply, such as in the desert or in the wild. Therefore, in such a place, when the drinking water brought in is exhausted, the water must be used as it is, no matter how the water existing in the place is contaminated.

[0005] Even if the stationary, faucet-directed or pumping-type water purifiers described above are normally located in a place where there is a water supply that can be used, the supply of tap water is interrupted due to an earthquake or the like. In this case, water must be obtained from nearby rivers and ponds.

When it is desired to purify water such as tap water at an outing place, for example, a hotel, the above-mentioned utility model registration No. 30175
No. 34, a portable water purifier as shown in FIG. 8 can be used. However, this portable water purifier purifies the water by bringing the activated carbon 61 stored in the cartridge 62 attached to the cap 64 screwed into the mouth 66 of the plastic bottle 65 into contact with the water inside the plastic bottle 65. I have to. In addition, when pouring out the water inside the plastic bottle 65 to the outside, the activated carbon 61 is removed from the plastic bottle 65 together with the cap 64 and is not useful for water purification. Therefore, PET bottle 6
Since the purification of water is performed only by bringing the activated carbon 61 into contact with the water in a stationary state inside 5, it takes a considerable time to purify the water. For this reason, the purified water in the PET bottle 65 is used up, and when further purified water is needed, the purified water cannot be used immediately. Further, the water inside the plastic bottle 65 cannot be purified so much.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a case, water treatment means disposed in the case, and a drink bottle made of synthetic resin, glass, metal or the like which is generally distributed. An engagement portion provided on the case for attachment and detachably engaged with a mouth of the bottle; and a spout provided on the case for pouring treated water in the case to the outside. And a liquid passage for guiding water to be treated in the bottle from the mouth to the supply side of the water treatment means when the case is attached to the bottle, and the water treatment means passes through the liquid passage to the water treatment means. The present invention relates to a water treatment cartridge configured so that the guided water to be treated can be treated with the water treatment means and then poured out from the spout.

Further, the present invention also relates to a combination structure of the above-described water treatment cartridge and the above-mentioned beverage bottle, and a water treatment method using the above-mentioned water treatment cartridge.

As the water treatment means used in the present invention, for example, the following various filter materials can be used. Purpose of use Filtration material used Resistance of water flow (1) Removal of water impurities (purification of water) Activated carbon, hollow fiber membrane, etc. Large (2) Delicious water and better for body malt stone, coral stone, machine small water (Water conditioning) ceramics, etc. (3) Combination of items (1) and (2) above Combination of items (1) and (2) above

Therefore, in the case of a water treatment cartridge which is not particularly provided with an air passage for sending outside air into the inside of the beverage bottle as in a first embodiment described later, the above item (2) is used. It is preferred to use mainly the filter media described.

The beverage bottles used in the present invention include drinking water such as natural mineral water, soft drinks such as cider, juice such as orange juice, tea such as black tea, Japanese tea, barley tea, and various liquid drinks such as coffee. Is packed and sold in bottles for drinks such as 500 ml, 900 ml, 1 liter, 1.5 liter, 1.8 liter, 2 liter, 3 liter, etc. Emptying and using a bottle (ie, a beverage plastic bottle made of a synthetic resin other than PET, having a small thickness and having an external thread around the mouth) is almost identical. preferable. As the standard of the external thread portion provided around the outer periphery of the mouth portion of such a beverage PET bottle, three types, that is, type 1, type 2 and type 3 are well known. 1
Any of Article screws (for bottle type 1 bottle and Type 3) and 2 start thread (in the case of Type 2 bottles), the thread pitch P ₁ of the male screw portion is 3.0 to 3.
The range is 3 mm. Was Isuzu and, in the case of double-threaded screw (bottle type 2), thread pitch P ₁ of each 1-threaded screw is in the range of 6.0~6.6mm of this fold. Accordingly, the thread pitch P ₂ of the female screw portion of the engaging portion of the water treatment cartridge for screwing in such a male screw portion is 2.7 to 3.
It is preferably in the range of 6 mm, more preferably in the range of 2.9 to 3.4 mm. When the male screw portion 2 start thread (bottle type 2) is internally threaded portion of the water treatment cartridge can also be a 1-threaded screw, the thread pitch P ₂ of the female screw portion of the single-thread screw, double that 5.4 to 7.2
Preferably, it is in the range of 5.8 mm to 5.8 mm.

The mouth diameter (diameter of the thread portion) R ₁ of the externally threaded portion of the PET bottles for beverages of types 1 to 3 is 2
7.0-28.0mm (in case of type 1 bottle), 2
The range is any of 6.0 to 27.0 mm (for a type 2 bottle) and 37.7 to 38.7 mm (for a type 3 bottle). Further, the mouth portion diameter (Nejitani diameter portion) R ₂ of the male screw portion, 24.5～25.5Mm
(In the case of a type 1 bottle), 23.5 to 24.5 mm
(In case of type 2 bottle) and 34.0-3
The range is 5.0 mm (in the case of a type 3 bottle). Therefore, the mouth portion diameter (diameter of the threaded portion) R ₃ of the female screw portion of the engaging portion of the water treatment cartridge for screwing in such a male thread portion, said R ₂ and Ho Isuzu because may equal or slightly larger , R ₂ ≦ R ₃ ≦ 1.2R ₂ , more preferably 1.01R ₂ ≦ R ₃ ≦ 1.1R ₂ . Mouth diameter (Nejitani diameter portion) R ₄ of the female screw portion, because may the R ₁ and Ho Isuzu equal to or slightly larger, but is preferably _{R 1 ≦ R 4 ≦ 1.2R 1} , 1.
More preferably, 01R ₁ ≦ R ₄ ≦ 1.1R ₁ .

[0013] The standard of the external thread portion of the plastic bottle for beverages further includes the number of screw turns, the screw width (thread width at the top of the screw), the inner diameter of the mouth, and the like. Can be selected arbitrarily within a range where the female screw portion can be screwed into the male screw portion.

As described above, the female thread portion of the water treatment cartridge for type 1 bottles and the female thread portion of the thread conversion adapter described later has a thread pitch P ₂ of 2.7.
～3.6Mm (more preferably, 2.9~3.4mm) (diameter of the threaded portion) mouth diameter in a range of R ₃ is R ₂ ≦ R ₃
≦ 1.2R ₂ (more preferably, 1.01R ₂ ≦ R ₃
≦ 1.1R ₂ ) and the mouth diameter R ₄ (diameter of the thread root portion) is R ₁ ≦ R ₄ ≦ 1.2R ₁ (more preferably, 1.01
R ₁ ≦ R ₄ ≦ 1.1R ₁ ) is preferable. Here, R ₂ R ₁ is 27.0~28.0mm the 24.5-2
Because it is 5.5 mm, the R ₃ is 24.5~30.6mm
(More preferably, in the range of 24.7 to 28.0 mm), R ₄ is 27.0 to 33.6 mm (more preferably,
27.3 to 28.1 mm). Internal thread portion of the cartridge and below a screw adapter for water treatment for the Type 2 bottle, the 2.7～3.6Mm (more preferably when the screw pitch P ₂ is 2-threaded screw, 2.9 5.4 to 7.2 mm (more preferably, 5.8 to 3.4 mm) in the case of a single thread.
6.8 mm), and the mouth diameter (thread portion diameter) R ₃ is R ₂ ≦ R ₃ ≦ 1.2R ₂ (more preferably, 1.01R ₂ ≦ R ₃ ≦ 1.1R ₂ ). And the mouth diameter (diameter of the thread root portion) R ₄ is preferably R ₁ ≦ R ₄ ≦ 1.2R ₁ (more preferably, 1.01R ₁ ≦ R ₄ ≦ 1.1R ₁ ). Here, R ₁ is 26.0~27.0mm
In Since R ₂ is 23.5～24.5Mm, the above R ₃ is 23.5～29.4Mm (more preferably, 23.7～
It said R ₄ is 26.0~32.4mm in the range of 27.0 mm)
(More preferably, 26.3 to 29.7 mm). Internal thread portion of the cartridge and below a screw adapter for water treatment as bottles Type 3 (more preferably, 2.9～3.4Mm) the screw pitch P ₂ is 2.7~3.6mm range And the mouth diameter (the diameter of the thread portion) R ₃ is R ₂ ≦ R ₃ ≦ 1.2R ₂ (more preferably, 1.01 R ₂ ≦ R ₃ ≦ 1.1R ₂ ) and the mouth diameter (the thread root portion) R ₄ is R ₁ ≦ R ₄ ≦ 1.2
R ₁ (more preferably, 1.01 R ₁ ≦ R ₄ ≦ 1.1
R ₁ ) is preferred. Here, R ₁ is 37.7～
Since R ₂ is 34.0~35.0mm at 38.7 mm,
The above R ₃ is 34.0～42.0Mm (more preferably,
In the range of 34.3～38.5Mm) above R ₄ is 37.7～
46.4 mm (more preferably, 38.1 to 42.6 m
m).

[0015] Thus, the female screw portion of the cartridge and the screw adapter for the water treatment, generally speaking, its thread pitch P ₂ is 2.7～3.6Mm (more preferably, 2.9 to 3. the mouth diameter (screw diameter of peak portions) R ₃ is 23.5～42.0Mm (more preferably in the range of 4 mm), the diameter of the mouth portion diameter (Nejitani portion in the range of 23.7～38.5Mm) ) is R ₄ is 26.0～46.4Mm (more preferably, is preferably in the range of 26.3～42.6Mm). Was Isuzu and, when the female screw portion of the cartridge or a screw adapter for water treatment using the external thread portion of the beverage PET bottles type 2 Paragraph screw, the screw pitch P ₂ is exceptionally 5.4 to 7 0.2 mm (more preferably, 5.8 to 6.8 mm).

The male thread portion of the screw conversion adapter is the same type as the female thread portion of the water treatment cartridge among the bottles of types 1 to 3, and the female thread portion of the screw conversion adapter is the same type. It may be any type different from the type.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, first to third embodiments in which the present invention is applied to a water purification cartridge for PET bottles are shown in FIG.
This will be described with reference to FIGS. In the first to third embodiments, common portions are denoted by the same reference numerals, and redundant description will be omitted.

First, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the water purification cartridge 1 has a mouth portion of a drinking PET bottle 2 generally distributed for packing and marketing a liquid beverage such as drinking water such as a natural mineral water. 3 to be used. This PET bottle 2 is usually formed in a bottle shape from polyethylene terephthalate (ie, PET), and has a well-known cap (not shown) made of metal, synthetic resin, etc. ) Is screwed and fixed so that the mouth portion 3 is kept liquid-tight. As the above-mentioned beverage plastic bottle 2, a liquid bottle which is already taken out of a liquid beverage at the time of marketing and is empty is used. Then, at the time of water purification, the water to be purified is packed in the empty plastic bottle 2.

The water purification cartridge 1 has a case 6 comprising a case body 4 and a case lid 5. The case body 4 is formed in a substantially cup shape, and the upper end thereof is formed thin by forming a step 4a on the outer peripheral surface.
An appropriate number of apertures 7 are formed in the bottom plate 4b of the case main body 4, and the throttle 4c is slightly above the bottom plate 4b.
Is formed, the case main body 4 is provided with the throttle portion 4c.
The lower side has a smaller diameter than the upper side. On the lower surface of the bottom plate portion 4b of the case body 4, a substantially cylindrical engaging portion 4d whose lower end constitutes a liquid inlet is formed. A female screw part 4 that can be screwed and fixed in a substantially liquid-tight state to a male screw part 3a formed on the outer peripheral surface of the mouth part 3 of the 5-liter plastic bottle 2.
e is formed. That is, the screw size of the female screw portion 4e is approximately compatible with the screw size of the male screw portion 3a, which is a typical standard size. Engagement part 4d
A ring-shaped packing 8 made of an elastic material such as rubber is disposed at an upper end on the inside, and the female screw 4e is connected to the male screw 3a.
Even if it cannot be screwed and fixed in such a liquid-tight state, the packing 8 allows the space between the mouth portion 3 and the engaging portion 4 to be in a liquid-tight state.

A porous holding plate 1 is provided inside the case body 4.
1. Three types of filter materials 12 constituting the water treatment means, for example
a, 12b, 12c and a porous inner lid plate 13 are sequentially stacked and arranged from below to above. Since the porous holding plate 11 is locked at the predetermined position by being locked by the throttle portion 4c of the case main body 4, the holding plate 11
A pre-filtration chamber 14 is formed between the case body 4 and the bottom plate 5b of the case body 4. On this holding plate 11, a filter medium 12
a, 12b, and 12c are sequentially stacked. As the material of the filter media 12a to 12c, one or more types of granular materials such as barley stone, coral stone, functional ceramics, and activated carbon can be used. In this case, the lower filter medium 12a, the middle filter medium 12b, and the upper filter medium 1
The particle size can be changed by 2c. Filter media 12a-12
A separator can be arranged at the boundary of c as needed. This separator may be made of a nonwoven fabric such as a felt, a woven fabric, a filter paper, a wire mesh, or another porous material, like the porous holding plate 11 and the porous intermediate cover plate 13.

The case lid 5 is provided with a step 4a of the case body 4.
A substantially annular falling portion 5a removably fitted to the thin portion of the cover plate is provided with a cover plate portion 5b provided around the outer periphery thereof. An opening 15 is formed. A substantially cylindrical spout 5c whose upper end constitutes a liquid inlet is formed on the upper surface of the lid plate 5b, and a ring-shaped ridge 5d is formed on the outer peripheral surface of the spout 5c. Are formed. A ring-shaped engaging portion 16a of the cap member 16 is fitted into the spout 5c, and the ring-shaped engaging portion 16a is
The position is held so as not to fall off between the position b. The cap portion 16c is connected to the ring-shaped engaging portion 16a via an elongated connecting portion 16b.
Is detachably fitted and fixed to the spout 5c of the case lid 5, so that the spout 5c can be closed in a liquid-tight manner. Therefore, even when the cap part 16c has opened the spout 5c, the cap member 16 is connected to the case 6 by the ring-shaped engaging part 16a.

When the water purification cartridge 1 is used for purifying the water to be purified packed in the PET bottle 2 for beverages, the used water (ie, the beverage inside the bottle has been poured out and is lost). ) A cap (not shown) screwed into the male screw 3a of the mouth portion 3 of the plastic bottle 2 at the time of marketing is removed from the bottle 2 if it is still attached, and then the inside of the bottle 2 is purified. The water to be packed is pre-packed. Next, the female screw portion 4a of the case body 4 is screwed into the male screw portion 3a of the mouth portion 3 of the bottle 2 in a substantially liquid-tight state and fixed.
Is integrally attached to the PET bottle 2. In this state, if the plastic bottle 2 is turned obliquely with the spout 5c provided on the case lid 5 toward a container (not shown) such as a cup, water to be purified inside the plastic bottle 2 is removed. As shown by an arrow, the liquid is guided from the mouth 3 to the pre-filtration chamber 14 through the opening 7. The water to be purified is filtered from the porous holding plate 11 by the filter media 12a, 12b,
After passing through 12c, it is filtered and purified, and further is poured into the container from the spout 5c through the porous inner lid plate 13 and the opening 15. The purified water poured into this container has already been purified very finely by the filter media 12a, 12b, 12c.

The thread size of the external thread portion 3a of the mouth portion 3 of the beverage PET bottle 2 which is generally distributed for packing and marketing a liquid beverage is not uniform. For example, as shown in FIGS. There is also a 2 liter plastic bottle having a larger mouth portion 3 than the 5 liter plastic bottle 2. In this case, the water purification cartridge 1 shown in FIG. 1 cannot be used for the 2 liter plastic bottle before it is used. For this purpose, the screw conversion adapter 21 shown in FIG. 3 can be used in combination with the water purification cartridge 1 shown in FIGS. In FIG.
The water purification cartridge 1 is exactly the same as that shown in FIGS. 1 and 2, the beverage plastic bottle 2 is for 2 liters, and the screw size of the external thread 3a of the mouth 3 is shown in FIGS. It is different from the one.

The screw conversion adapter 21 has an annular connecting plate portion in which a substantially cylindrical small-diameter cartridge engaging portion 22 and a substantially cylindrical large-diameter bottle engaging portion 23 extend substantially horizontally. 24 are integrally connected. On the outer peripheral surface of the small-diameter engaging portion 22, a male screw portion 22 a capable of being screwed and fixed to the female screw portion 4 e of the engaging portion 4 d of the case body 4 in a substantially liquid-tight state is formed. On the peripheral surface, a female screw part 23 which can be screwed and fixed in a liquid-tight state to the male screw part 3a of the mouth part 3 of the plastic bottle 2 for 2 liters.
a is formed. A ring-shaped packing 2 made of an elastic material such as rubber is provided on the upper inner side of the large-diameter engaging portion 23.
5 are provided. If the screw conversion adapter 21 is provided with a ring-shaped engaging portion and an elongated connecting portion similar to the cap member 16 and is attached to the engaging portion 4d of the case body 4, the screw converting adapter 21 can be used even if it is not used. Will not be lost.

Therefore, when the screw conversion adapter 21 is used, instead of directly attaching the engaging portion 4d of the water purification cartridge 1 to the mouth portion 3 of the 2-liter plastic bottle 2, the following procedure may be used. That is, the male screw part 22a of the small diameter engaging part 22 of the screw conversion adapter 21 is screwed and fixed to the female screw part 4e of the engaging part 4d of the water purification cartridge 1. By doing so, the female screw portion 23 that can be screwed into the male screw portion 3a of the mouth 3 of the bottle 2 and fixed.
a can be provided in the case 6 of the water purification cartridge 1. At the same time, the female screw portion 23a of the large-diameter engaging portion 23 of the screw conversion adapter 21 is screwed and fixed to the male screw portion 3a of the mouth 3 of the bottle 2. Therefore, also in this case, similarly to the case shown in FIGS. 1 and 2, the water to be purified inside the plastic bottle 2 can be similarly purified and taken out. A plurality of types of screw conversion adapters 21 having different thread sizes of the external thread portion 23a of the bottle engaging portion 23 are prepared in advance, and the plurality of types of screws are changed according to the thread size of the external thread portion 3a of the mouth 3 of the bottle 2. Conversion adapter 21
Is used selectively, the same water purification cartridge 1 can be used for several types of bottles 2. Of course, it is also possible to use the same water purification cartridge 1 sequentially for many PET bottles 2.

In the water purification cartridge 1 shown in FIGS. 1 to 3, when the filter media 12a, 12b, 12c, etc. are contaminated or clogged,
By removing, it is possible to easily replace the filter media 12a, 12b, 12c and the like. When the water purifying cartridge 1 is to be disposable, the falling portion 5a of the case lid 5 is adhered in a liquid-tight state by ultrasonic welding to the inner thin portion formed by the step portion 4a of the case main body 4 or by bonding with an adhesive. Is preferred.

Next, a second embodiment of the present invention, which is a partial modification of the first embodiment shown in FIGS. 1 to 3, will be described with reference to FIGS. 4 and 5. The example is substantially different from the first embodiment only in that the water purification cartridge 1 is provided with an air introduction pipe 26.

The air introduction pipe 26 extends from the spout 5c of the case cover 5 to the cover plate 5b of the case cover 5, the porous inner cover plate 13, the filtering materials 12a to 12c, the porous holding plate 11, and the case. Each extending through the bottom plate portion 4b of the main body 4,
Further, it extends through the engaging portion 4d of the case body 4 to a lower portion thereof. Therefore, the lower end of the air introduction pipe 26 slightly protrudes outward from the engagement portion 4d of the case body 4 further downward. At the lower end of the air introduction pipe 26, a check valve 27 for preventing the fluid from moving upward from below is provided as necessary. The check valve 27 may be provided inside the air introducing pipe 26, particularly at a lower portion thereof. If the inner diameter of the air introduction pipe 26 is reduced to increase the surface tension of the water to be purified inside the PET bottle 2 so that the water does not leak from the air introduction pipe 26, the check valve 27 may be omitted.

When the water purification cartridge 1 according to the second embodiment shown in FIGS. 4 and 5 is used in the same manner as the water purification cartridge 1 according to the first embodiment shown in FIGS.
The lower end of the outside air introduction pipe 26 is in a state of being inserted near the mouth 3 inside the plastic bottle 2. Accordingly, when the water inside the plastic bottle 2 is poured into the container from the spout 5c,
The poured water and almost the same amount of air are introduced into the pipe 26 from the upper end of the air introduction pipe 26 as shown by an arrow, and pass through the pipe 26 and the check valve 27 to the inside of the bottle 2. be introduced.

According to the water purification cartridge 1 of the second embodiment, the water inside the bottle 2 is
c, it is easy to flow out to the spout 5c, so that the water inside the bottle 2 can be quickly poured into the container. Since the check valve 27 is provided at the lower end of the air introduction pipe 26, there is no possibility that the water inside the bottle 2 flows into the pipe 26 from the lower end of the air introduction pipe 26.

Next, a third embodiment of the present invention will be described with reference to FIGS. 6 and 7.
Case body 31, case lid 32, and case bottom 33
Is provided. The case main body 31 includes a substantially cylindrical outer tube portion 31a, a partition plate portion 31b formed at a lower end portion of the outer tube portion 31a, and a partition plate portion 31b.
b, a substantially cylindrical mounting portion 31c formed on the upper surface of b.
A substantially tubular spout 31d is formed below the partition plate 31b so as to extend substantially horizontally.

The upper and lower ends of the outer cylindrical portion 31a are made thin by forming steps 31e and 31f on the outer peripheral surface. Near the center of the partition plate portion 31b, there is formed a central opening 34 connected to the spout portion 31d, and a plurality of outer openings 35 for communicating the lower side of the partition plate portion 31b with the upper side near its outer periphery. It is arranged in a ring shape. The mounting portion 31c has a stepped portion 3 on the inner peripheral surface at the lower end.
Except for the lower end portion, the thickness is reduced by forming 1 g. One half of the cylindrical spout 31d is the outer cylinder 3
1a, the other half protrudes outward from the outer cylinder 31a. A ring-shaped ridge 31h is formed on the outer peripheral surface of a portion of the tubular spout 31d protruding outward, and a first ridge 31h is provided between the ridge 31h and the outer cylinder 31a.
The ring-shaped engaging portion 16 of the cap member 16 which may have substantially the same configuration as the cap member 16 in the embodiment of the present invention.
a is held so as not to fall off.

The case lid 32 has a substantially annular falling portion 32a removably fitted to a thin portion formed by the upper step portion 31e of the case body 31. It has. Since a step 32c corresponding to the upper step 31e is provided on the inner peripheral surface of the fall 32a, the step 3 is also provided at the fall 32a.
A thin portion by 2c is formed. Inside the falling portion 32a of the case lid 32, a plurality of pressing projections 32d for pressing the upper surface of a porous sheet 52 described later are provided.
Are arranged in a ring shape.

The case bottom body 33 is formed in a substantially cup shape, and the upper end thereof is formed thin by forming a step 33a on the inner peripheral surface. The case bottom 33 is removably fitted to the thin portion of the lower step 31f of the case body 31 at the thin portion of the step 33a. A substantially cylindrical engaging portion 33c having a relatively large diameter is formed on the lower surface of the bottom plate portion 33b of the case bottom body 33,
On the inner peripheral surface of the engaging portion 33c, a male screw portion 3 formed on the outer peripheral surface of the mouth portion 3 of the 1.5 liter plastic bottle 2 is provided.
a is formed with a female screw portion 33d which can be screwed and fixed in a substantially liquid-tight state. On the lower surface of the bottom plate portion 33b, a substantially tubular liquid introduction tube portion 33e having a relatively small diameter is provided.
Is further formed, and the liquid introduction pipe portion 33e is
and slightly protrudes outward from c. The liquid introducing pipe portion 33e is substantially concentric with the entire case bottom 33 and the engaging portion 33c. An extension tube 37, which may be flexible, may be connected to the liquid introduction tube portion 33e, if necessary, and the tube 37 may have a length extending to near the lower end inside the plastic bottle 2. . Liquid inlet tube 3 of case bottom 33
If the length 3e is made longer, the extension tube 37 is unnecessary, but since the height of the bottle 2 varies,
It is better to shorten the liquid introduction tube 33e so that the bottle can be shared by the bottles 2 of various sizes. This liquid introduction tube 3
3e may be an insertion type structure without projecting outside.
A bag-shaped porous filter 38 made of synthetic resin or the like can be attached to the lower end of the extension tube 37, and the porous filter 38 can remove coarse dirt in water to be purified. In this way, the surface area of the bag-shaped porous filter 38, particularly the effective opening area, is determined by the area of the tip opening of the extension tube 38 (that is, the sectional area of the tip).
Since the water flow resistance of the porous filter 38 is small, the water to be purified is easy to pass.

Above the bottom plate portion 33b of the case bottom body 33, a substantially circular air introducing tube portion 33f extending substantially horizontally is provided.
The air introduction pipe portion 33f is arranged such that one half is disposed inside the case bottom 33 and the other half protrudes from the case bottom 33 to the outside. A portion protruding outside of the gusset introduction pipe portion 33f is formed with a ring-shaped unevenness for retaining to form a tube connection portion 33g, and the tube connection portion 33g is formed.
Is formed with an air vent hole 39 near the base end. The tube connecting portion 33g may be configured so as not to protrude from the entire case bottom 33 to the outside to have an insertion type structure. A flexible and elastic connecting tube 41 of a manual air pump 40 having a check valve (not shown) for preventing backflow of air is provided in the tube connecting portion 33g.
Are detachably connected. An electric air pump can be used in place of the manual air pump 40. The air introduction pipe 33f communicates between the engagement section 33c and the liquid introduction pipe 33e by an opening 36 provided in the bottom plate 33b.
If a pressure adjusting valve (not shown) is provided near the middle portion or end portion 41a of the connecting tube 41, the pressure of the air introduced from the connecting tube 41 to the air introducing pipe portion 33f is adjusted to be substantially constant. can do.

A hollow fiber membrane type filtration mechanism 42 as water treatment means is mounted on the mounting portion 31c of the case body 31. The filtering mechanism 42 includes a substantially cylindrical hollow fiber case 43 and a bundle of hollow fibers 45 that is configured by bundling a large number of hollow fibers 44 and disposed inside the hollow fiber case 43. A ring-shaped concave groove is formed on the outer peripheral surface near the lower end of the hollow fiber case 43, and an O-ring 47 made of an elastic material is fitted into the concave groove. Hollow fiber case 43
Ring-shaped ridges 43a near the upper end and the lower end of
The lower end of the hollow fiber case 43 is detachably fitted to the mounting portion 31c of the case main body 31, and the lower end is supported by the step 31g of the mounting portion 31c. Accordingly, the post-filtration chamber 48 is provided between the hollow fiber membrane type filtration mechanism 42 and the partition plate 31b of the case body 31.
Is formed, and the lower end of the hollow fiber case 43 and the case body 3 are formed.
The first mounting portion 31 c is almost liquid-tight and elastically in contact with the mounting portion 31 c via the O-ring 47. Both ends of the large number of hollow fibers 44 are solidified by a potting material 46 made of an appropriate material such as epoxy resin and disposed at the lower end of the hollow fiber case 43, and portions other than both ends are bent in a loop shape. It extends vertically. Both ends of the plurality of hollow fibers 44 open to the lower surface of the potting material 46 and are connected to the post-filtration chamber 48.

A substantially cylindrical space 49 between the outer cylindrical portion 31a of the case body 31 and the hollow fiber case 43 of the hollow fiber membrane type filtration mechanism 42 has a lower porous sheet 50 and a large number of granular activated carbons. An activated carbon layer 51 and an upper porous sheet 52 as water treatment means are sequentially stacked from below to above. The porous sheets 50 and 52 can be formed from non-woven fabric such as felt, woven fabric, filter paper, wire mesh, or other suitable porous material so as to be substantially similar to the cylindrical space 49 in plan view. These porous sheets 5
Reference numerals 0 and 52 are held in position by engaging the lower surfaces thereof with a pair of upper and lower projecting ridges 43a and 43b formed on the hollow fiber case 43, respectively.

The case bottom 33 is provided with an ion exchange column 5 as a water treatment means formed of a disk of ion exchange resin.
The pre-filtration chamber 54 is formed between the ion exchange column 53 and the bottom plate 33b of the case bottom 33.

When the water purification cartridge 1 according to the third embodiment shown in FIGS. 6 and 7 is used in the same manner as the water purification cartridge 1 according to the first embodiment shown in FIGS. The pump 40 may be grasped firmly or weakly by hand. In this way, the air that has passed through the check valve of the pump 40 is connected to the connection tube 41, the air introduction pipe 33f of the case bottom 33,
It is sent into the inside of the PET bottle 2 through the opening 36 and the engaging portion 33c. For this purpose, the water to be purified inside the bottle 2 is, as shown by the arrow, the porous filter 3.
8, extension pipe 37, liquid introduction pipe 33 of case bottom 33
Since the liquid is guided to the ion exchange column 53 through the chamber d and the pre-filtration chamber 54, it is purified in the ion exchange column 53.

Further, the water is guided to the activated carbon layer 51 through the outer opening 35 of the case body 31 and the porous sheet 50 and purified as shown by the arrow, and then is filtered through the porous sheet 52 to form a hollow fiber membrane type filter. It is also purified by being guided by the material 42. In this case, water moves from the outside of each hollow fiber 44 to the inside through the membrane, and is guided to the post-filtration chamber 48 from one end opening of the hollow fiber 44. Therefore, the impurities in the water adhere to the outer surface of the hollow fiber 44 and are left behind, but the purified water is
As shown by the arrow, the post-filtration chamber 48 is
And it is guided to the spout 31d through the center opening 34, and is poured into the container from the spout 31d. The water poured into this container is purified very finely by the porous filter 38, the ion exchange column 53, the activated carbon layer 51, and the hollow fiber membrane type filter medium 42.

When this water purification cartridge 1 is used for a long time, the degree of clogging of the water treatment means such as the hollow fiber membrane type filtration mechanism 42, the activated carbon layer 51, and the ion conversion column 53 gradually increases. The force needed to hold the 40 firmly by hand increases gradually. As the clogging proceeds further, the end 41a of the extension tube 41 rises as shown by a chain line in FIG.
Air leaks out of 9. For this reason, the force for strongly gripping the manual air pump 40 can be suddenly reduced, so that the user can quickly know the clogging.

In the water purification cartridge 1 of the third embodiment shown in FIGS. 6 and 7, a hollow fiber membrane type filtration mechanism 42,
When the water treatment means such as the activated carbon layer 51 and the ion conversion column 53 is contaminated or clogged, the case cover 32 and the case bottom 33 are detached from the case body 31, respectively. Replacement can be easily performed. When the water purification cartridge 1 is to be disposable, the falling portion 32a of the case lid 32 is thinned by the upper step portion 31e of the case main body 31, and
It is preferable that the thin portion formed by the step portion 33a of the case bottom body 33 be bonded to the thin portion formed by the lower step portion 31f of the case main body 31 in a liquid-tight state by ultrasonic welding, adhesive bonding, or the like.

The extension tube 37 and / or the porous filter 38 used in the third embodiment shown in FIGS. 6 and 7 may be similarly used in the first and second embodiments. Further, the screw conversion adapter 21 used in the first embodiment shown in FIGS. 1 to 3 may be similarly used in the second and third embodiments described above.

In the above, the first to third embodiments of the present invention have been described in detail. However, the present invention is not limited to these first to third embodiments. Various changes and modifications are possible based on the spirit of the described invention.

For example, in the above-described first to third embodiments, the case 6 is formed to have a substantially cylindrical shape as a whole. Is also good. In addition, the engaging portions 4d, 33 provided on the case 6
Although c is configured to be engaged with the outer peripheral surface of the mouth portion 3 of the beverage bottle 2, it may be engaged with the inner peripheral surface of the mouth portion 3 by press-fitting, screwing, or the like.

[0046]

According to the present invention, mountains, deserts, unexplored areas,
Even in places without other water supply facilities, if you have a commercially available drinking bottle such as a plastic bottle, simply carry a water treatment cartridge and check whether drinking water that has been treated cleanly from dirty water is indoors. It can be easily obtained regardless of whether it is outdoors. Therefore, health management in daily life is very simple, and when safe drinking water cannot be secured in outdoor activities, for example, even when the supply of tap water is cut off due to a disaster or the like, safe drinking water can be obtained very easily. . Further, when the water inside the beverage bottle is poured out from the spout provided in the case of the water treatment cartridge, the water to be treated inside the bottle is provided in the case of the water treatment cartridge. Since the water is passed along the water treatment means, the water treatment by the water treatment means can be performed very reliably and extremely easily immediately before pouring from the spout.

According to the second aspect of the present invention, the engaging portion of the water treatment cartridge can be very reliably and extremely easily engaged with the mouth of the beverage bottle. Release is also very easy.

According to the third aspect of the present invention, the screw size of the screw portion provided at the engaging portion of the water treatment cartridge is such that the screw size of the screw portion provided at the mouth portion of the beverage bottle used for water treatment. Even if the dimensions are not directly adapted, they can be adapted very easily only by preparing a screw change adapter in advance.

According to the fourth aspect of the present invention, even if the water treatment means of the water treatment cartridge has a large water flow resistance and the water to be treated is difficult to pass through the water treatment means, it can be passed through the air passage. By introducing the air into the interior of the beverage bottle, the treated water can be easily discharged from the spout of the water treatment cartridge.

According to the fifth aspect of the present invention, an air pump can be very easily connected to the water treatment cartridge. Therefore, air can be extremely easily supplied into the beverage bottle by the air pump. Can be introduced.

According to the sixth aspect of the present invention, it is extremely easy to position the water intake of the water treatment cartridge below the water surface inside the beverage bottle by the extension tube. The water to be treated inside the beverage bottle can be taken into the water treatment cartridge very easily and very reliably, even if the size of the water bottle varies in size.

According to the seventh aspect of the present invention, even if the water to be treated is a large amount of garbage, the clogging of the water treatment means of the cartridge for water treatment is effectively prevented to prevent this. The life of the water treatment means can be extended.

According to the eighth aspect of the present invention, it is possible to prevent an increase in water flow resistance due to the provision of the porous filter. There is no difficulty in getting out of the spout of the water treatment cartridge.

Further, according to the ninth aspect of the present invention,
When the water treatment cartridge is not used, it is extremely effective to prevent dust and dirt from entering the case from the spout provided in the case of this cartridge, and unnecessary leakage of treated water from the spout. The cap member can be prevented from being lost.

[Brief description of the drawings]

FIG. 1 is a perspective view in a use state of a first embodiment in which the present invention is applied to a water purification cartridge for PET bottles.

FIG. 2 is a longitudinal sectional view of a main part of the water purification cartridge in FIG. 1 in a use state.

FIG. 3 is an exploded front view of a main part of the water purification cartridge of FIG.

FIG. 4 is a perspective view in a use state of a second embodiment in which the present invention is applied to a water purification cartridge for PET bottles.

FIG. 5 is a longitudinal sectional view of a main part of the water purification cartridge of FIG. 4 in a use state.

FIG. 6 is a perspective view of a third embodiment in which the present invention is applied to a water purification cartridge for PET bottles in a use state.

7 is a longitudinal sectional view of a main part of the water purification cartridge in FIG. 6 in a used state.

FIG. 8 is a vertical cross-sectional view of a conventional plastic bottle water purifier in use.

[Explanation of symbols]

 1 Water Purification Cartridge 2 Drinking PET Bottle 3 Mouth 3a Male Thread 4 Case Body 4d Engagement 4e Female Thread 5 Case Lid 5c Spout 6 Case 12a Filter Material 12b Filter Material 12c Filter Material 16 Cap Member 21 Screw Conversion Adapter 22a Male thread part 23a Female thread part 26 Air introduction pipe 31 Case main body 31d Spout part 32 Case lid 33 Case bottom 33c Engagement part 33d Female thread part 33e Liquid introduction pipe part 33f Air introduction pipe part 37 Extension tube 38 Porous filter 40 Manual air pump 42 Hollow fiber membrane type filtration mechanism 51 Activated carbon layer 53 Ion exchange column

Claims (11)

[Claims] 1. A case, a water treatment means arranged in the case, and a water treatment means provided in the case for attaching the case to a commonly distributed beverage bottle and removably attached to a mouth of the bottle. An engaging portion that can be combined; a spout provided in the case for pouring out the treated water in the case to the outside; and a treatment in the bottle when the case is attached to the bottle. A liquid passage for guiding water to be supplied from the mouth to the supply side of the water treatment means, wherein the water to be treated guided to the water treatment means through the liquid passage is subjected to water treatment by the water treatment means, and A water treatment cartridge configured to be able to pour out from the spout. 2. A screw portion having a screw size substantially adapted to a screw size of a screw portion provided on the mouth portion of the bottle is provided on the engagement portion. The cartridge according to claim 1, wherein the screw portion of the engaging portion is detachably screwed into the screw portion of the mouth of the bottle. 3. A first screw portion having a screw size substantially adapted to a screw size of a screw portion provided at a mouth portion of a beverage bottle, and a screw of a screw portion provided at the engaging portion of the case. A screw conversion adapter integrally connected to a second screw portion having a screw size substantially adapted to the size, wherein the second screw portion is detachably screwed to the screw portion of the engagement portion; 3. The cartridge according to claim 1, wherein the first screw portion is detachably screwed into the screw portion of the mouth when the case is attached to the bottle. 4. 4. An air passage in which an air inlet is disposed outside the case and the bottle when the case is attached to the bottle, and an air outlet is disposed inside the bottle. The cartridge according to claim 1. 5. The cartridge according to claim 4, further comprising connecting means for connecting an air pump for supplying air from outside to the air inlet of the air passage to the air inlet. 6. An extension tube which can be detachably connected to a liquid introduction port of the liquid passage, wherein at least a distal end portion of the extension tube is inside the bottle when the case is attached to the bottle. The cartridge according to claim 1, wherein the cartridge is arranged. 7. The cartridge according to claim 1, wherein a filter for preventing coarse water in the water to be treated from flowing into the extension tube is provided at a distal end portion of the extension tube. 8. The cartridge according to claim 1, wherein a surface area of the filter is larger than a sectional area of a tip of the extension tube. 9. The apparatus further comprising a cap member capable of closing the spout of the case, wherein the cap is connected to the case even when the cap member opens the spout. The cartridge according to claim 1, wherein the cartridge is configured. 10. The water treatment cartridge according to claim 1 and a generally available beverage bottle, wherein the engaging portion provided on the case of the cartridge is provided on the beverage bottle. A combination structure of a water treatment cartridge and a beverage bottle, which is configured to be detachably engaged with the mouth. 11. The water according to any one of claims 1 to 9, wherein water to be treated is packed into an empty beverage bottle which is generally distributed for packing and marketing a beverage and does not contain the beverage. The engaging portion provided on the case of the processing cartridge is engaged with a mouth provided on the beverage bottle, and the water to be treated is treated by the water treatment means, and then externally from the spout. Water treatment method that was poured into