JPH029486A - Water filter - Google Patents

Abstract

PURPOSE:To ensure adequate water filtration by providing a constitution in which water penetrates into an external space from an untreated water supply section from an inflow port passes through activated charcoal, then the water is drawn into an inner space through a water passage hole and further it penetrates a separation filter membrane and is delivered from a filtered water delivery section through an outflow port. CONSTITUTION:Untreated water is fed into an untreated water supply section 2 by switching the flow of untreated water (service water) to a hose 31 side. After this, the water that flows into an external space 10 from the untreated water supply section 21 through an inflow port 104 passes through activated charcoal 109, then it is introduced into an inner space 105 through a water passage hole 107. In addition, the water penetrates a separation filter membrane 10, then is filtered and delivered from a filtered water delivery section 22 through an outflow port 106. Consequently, adequate filtration of the untreated water is ensured and the filtered water is discharged from a discharge pipe 24 for use as water for drinks. A cartridge 1 for this filtered water is of the double structure with parallel components. However, it consists of the activated charcoal 109 and a separation filter membrane 110 arranged in series against a water flow. Furthermore the entire flow passage is long so that it allows adequate contact with water.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a water purifier that is attached to a tap and purifies the raw water of the tap, and specifically relates to activated carbon and a hollow system for purifying the raw water. ? The present invention relates to a water purifier equipped with a removable water purifier cartridge containing a separation filtration membrane such as an Li filtration membrane.

(Problems to be solved by conventional techniques and inventions) In recent years,
Contamination from tap water and other inorganic materials has become a major problem. This is thought to be due to increased contamination of tap water sources and aging water tanks and pipes found in high-rise residences and buildings. Reflecting this fact, in order to obtain more delicious and safe water,
BACKGROUND ART Various small-sized water purifiers are used in homes, offices, restaurants, etc. as tap water treatment devices that can be used for pre-use.

The above-mentioned tap water treatment equipment usually has built-in tap water treatment materials such as activated carbon, ion exchange resin, and separation 'di filtration. Bacteria, water softening, etc. are treated.

” - Tap water treatment equipment (water purifiers) must be replaced periodically to maintain their processing capacity at a high level for a long time, and as a water purifier that can easily perform such replacement,
It is known that the processing I4 itself is made into a cartridge (Japanese Patent Application Laid-open No. 59-76514, Japanese Patent Application Laid-open No. 60-1)
90206, Publication No. 49-127053, Publication No. 55-167412, Publication No. 57-
60880, etc.).

By the way, as mentioned above, when a water purification cartridge incorporates activated carbon and a separation filtration membrane as treatment materials, it is necessary to reliably separate the two in order to fully demonstrate the performance of these treatment materials. It is important to bring the treatment material into sufficient contact with water. In order to meet these conditions, it is possible to arrange activated carbon and a separation filtration membrane in series, but in this case, the water purification cartridge itself becomes long and difficult to handle. The problem is that it is inconvenient.

In addition, the water purification cart has a structure in which the outer periphery of the inner layer filled with hollow fiber filtration membranes (separation filtration membranes) is wrapped with a protective net, an activated carbon-filled layer is arranged around the outer periphery, and the outer periphery is further covered with a microfilter membrane. Rindge (Utility Model Publication No. 57-60880)
It has been known. However, in this case, the raw water to be purified passes through the hollow fiber filtration membrane, the activated carbon packed layer, and the microfilter membrane in order from the inside, but the raw water (tap water) first passes through the hollow fiber filtration membrane layer. In order to pass
Depending on the material of the hollow fiber filtration membrane, residual chlorine, trace organic substances, hardness components (ions such as sodium, potassium, magnesium, iron, etc.) in the raw water may shorten the life of the hollow fiber filtration membrane. At the same time, since the boundary between the hollow fiber filtration membrane layer and the activated carbon packed layer is formed with a protective net, the raw water can pass through the hollow fiber filtration membrane layer and the activated carbon as a soot bath, eliminating bacteria, etc. in the raw water. Separation and removal of residual chlorine and the like by activated carbon may be insufficient, resulting in problems such as insufficient purification of treated water.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a water purifier equipped with a removable water purifying cartridge that is compact, easy to handle, and has sufficient water purifying performance.

[Means for Solving the Problems] The present invention provides the following water purification 2 in order to achieve the above object.

A water purifier comprising a water purification cartridge removably attached to a block base having a raw water supply part and a purified water delivery part, the water purification cartridge having an inner cylinder disposed inside an outer container. It has a double structure container part, an inlet that allows water to flow into the outer space formed by the outer container and the inner cylinder, and an outlet that allows water to flow out from the inner space located inside the inner cylinder, The outer space and the inner space communicate with each other through a water hole formed in the inner cylinder and are isolated via a filter, and the outer space is filled with activated carbon and the inner space is filled with activated carbon. is loaded with a separation filtration membrane, and water flowing from the raw water supply section through the inlet into the outer space passes through the activated carbon, and then is introduced into the inner space through the water passage hole. The water purifier is further characterized in that the water is purified by passing through the separation filtration membrane, and is sent out from the purified water delivery section via the outflow port.

[Function] In the present invention, the water purification cartridge is configured such that activated carbon is arranged around the outside of the separation filtration membrane, and the two are connected in series, so that the raw water is first passed through the activated carbon, and then the separation filtration membrane is passed through. It is possible to make the cartridge permeate and effectively exhibit the R ability of both treatment materials, and as a result, it is possible to make the cartridge more compact and at the same time, it is possible to improve the purification performance.

〔Example〕

An embodiment of the present invention will be described in detail based on the drawings.

FIG. 1 is a sectional view schematically showing a stationary water purifier according to an embodiment of the present invention. In the figure, 1 is a water purification cartridge, and the cartridge 1 is detachably attached to a block base 2. It is being jl), use of the above water purifier!
The perspective view of FIG. 3 shows rIi more clearly.

The water purification cartridge 1 has a cylindrical outer volume n I
Inside O1, a circular inner cylinder 102 has a double-structured volume H portion whose cross section is arranged concentrically, and nuclear internal information 1
02 is pressed at its upper end to the outer container 101 with an O-ring or by heat fusion! ! ? The foot is fixed. Further, the water purifier has an inlet 104 that allows water to flow into an outer space 103 formed by the outer container 101 and the inner cylinder 102, and an inlet 104 that allows water to flow out from an inner space +05 located inside the inner cylinder 102. There is an outlet 106 for allowing the air to flow through the air.

The outer space 103 and the inner space 105 are defined by water holes 10 formed at four locations around the inner cylinder 102.
7, and configured to allow water to flow into the inner space 105, and separated via a second filter 108, configured to prevent the next activated carbon 09 from entering the inner space 105. There is. And the above outer space 1
03 is filled with activated carbon 109 and the inner space 10
5 is loaded with a separation filtration membrane 110, and constitutes the water purification cartridge 1 in this embodiment.

Further, the block base 2 is formed with a raw water supply section 21 for causing raw water to flow into the inlet 104 and a purified water delivery section 22 for discharging purified water flowing out from the outlet 106. There is.

One end of a hose 31, the other end of which is connected to the connecting member 3 for the water faucet 4, is connected to the raw water supply section 21, and the backflow of water from the water purifier to the hose 31 side is prevented. A check valve 23 is provided for this purpose. Further, in the purified water delivery section 22, the outlet 106 is the outlet 1'1! ! It is fitted tightly through an O-ring wound around the T, and an S-shaped discharge pipe 24 is rotatably connected to the purified water delivery section 22. still,
The connecting member 3 attached to the hose 31 includes:
A switching lever 32 is provided that can switch the flow of raw water from the water supply between the hose 3I side and the downward direction (arrow) in the figure.

Next, the operation of this embodiment will be explained. In addition, in the figure, the flow of water is indicated by an arrow.

First, by switching the flow of raw water (tap water) to the hose 31 side, the raw water can be sent to the raw water supply section 21, and then from the raw water supply section 21 through the inlet 104 to the outer space 103. The water that has flowed into the chamber passes through the activated carbon 109, then is introduced into the inner space 103 through the water passage 107, and further passes through the separation filtration membrane 1.
10 and is purified, and sent out from the purified water delivery section 22 via the outlet 106. As a result, the raw water is sufficiently purified, and the purified water can be taken out from the discharge pipe 24 and used for drinking or the like.

Next, the water purifier of this example will be explained in more detail.

In the above-mentioned water purification system, the first filter 113, which is clamped and fixed at the lower end of the outer space 103 by the filter guard III located above and the mounting seat 112 located below, is attached to the central axis of the inner cylinder 02. It is installed perpendicularly to the outer space 103, and plays the role of preventing foreign matter such as iron rust from entering into the outer space 103, and at the same time, sealing the activated carbon 09.

The filter guard III is a member having a planar structure shown in FIG. 2 (8) and a cross-sectional structure shown in FIG.
A hole 1]4 for guiding the raw water flowing in through the inlet 104 formed in the first filter 113.
are evenly distributed.

Further, the above-mentioned second filter 108 is connected to the above-mentioned water passage hole 1.
It is wound over a wide range exceeding the formation area of 07 and around the entire outer periphery of the inner cylinder 102. and the inner cylinder 102 around which the second filter 108 is wound.
The outer circumferential wall of is one step lower (formed,
A water pocket 115 consisting of a narrow gap is formed between the outer circumferential wall and the inner surface of the second filter 108, and as a result, it is possible to increase the filtration area of the second filter 108, improving processing capacity. is being done.

The above-mentioned first filter 113 and second filter 108
It is preferable that each of these be made of a porous material having a pore diameter of 0.5 to 5 μm, and specifically, nonwoven fabrics made of synthetic polymer compounds such as polyolefin, polyester, and polyvinyl alcohol, cotton, cellulose, etc. can be used.

In addition, activated carbon 1 filled in the above-mentioned outer space 103
09 contains residual chlorine, trace organic substances, hardness components (
Specifically, they are ions such as sodium, potassium, magnesium, and iron. The activated carbon used in the present invention has an average particle size of 5 to 100 mesos. is preferable, and more preferably 8 to 60 meshes. Note that for the above purpose, adsorbents such as ion exchange resins, chelate resins, zeolites, etc. are not necessarily limited to activated carbon. It is also possible to use them together.

In addition, the separation filtration membrane 110 loaded in the inner space 105 allows the water that has passed through the activated carbon 109 to permeate through the microscopic pores formed in the wall of the Mi1M membrane 110. It works to filter out and purify microscopic suspended substances such as iron colloids, dirt, and bacteria that exist in water.

The above-mentioned separation filtration [110 in this example is made of a hollow fiber bundle formed by bundling a large number of porous hollow fiber filtration membranes,
Both ends of the porous hollow fiber filtration membrane are bent to form a U-shaped loop at the upper end of the hollow fiber bundle, and both ends of the hollow fiber bundle are focused and fixed by a resin tube plate 116 located at the lower end. Both ends of the porous hollow fiber filtration membrane (1) are opened at the lower surface of the tube plate 11G. However, the hollow fiber bundle is not limited to one in which porous hollow fibers/filtration membranes are bent into a U-shape at the upper end as described above, but can also be one in which the upper end is hardened and sealed with resin. You can.

The porous hollow fiber filtration membrane applied to the above hollow fiber bundle is as follows:
It is preferable that the film thickness is 30 to 200μ, and 30 to 200μ.
It is more preferable that the micropores have an average pore diameter of 0.1 to 150 μm, and the average pore diameter of the micropores as measured by a mercury porosimeter is 0.5 μm.
The porosity is preferably 0.05 to 5μ, more preferably 0.1 to 2μ, and more preferably the porosity is 20 to 90% by volume, even more preferably 50 to 80% by volume. Specifically, porous hollow fiber filtration membranes such as polyolefin-based, polysulfone-based, polyvinyl alcohol-based, cellulose-based, and polymethyl methacrylate-based membranes can be mentioned. Note that the separation filtration membrane filled in the inner cylinder 102 is not limited to the porous hollow fiber filtration membrane described above, and it goes without saying that a porous flat membrane or the like can also be used.

Further, in this embodiment, both the inlet port 104 and the outlet port 106 described above are located near the lower end of the water purification cartridge, and conversely, the water passage hole +07 described above is located near the upper end of the water purification cartridge 1. There is. Therefore, the water purification cartridge 1 is formed with a compact parallel structure consisting of a double structure with its cross section arranged on concentric circles.
are arranged in series, and each has a long flow path and is structured so that it can make sufficient contact with water. Therefore, activated carbon 109 and min filtration! ! The inherent purification performance of the membrane 110 can be fully exhibited.

In addition, the water purification cartridge 1 has a block base 2.
The water purification cartridge 1 can be easily replaced by rotating it.

However, the method of attaching the water purification cartridge 1 is not limited to screwing.

The water purification cartridge l also has an air vent mechanism 11 on its upper wall surface that communicates with the inner space n8II 05.
7 is provided. This air venting mechanism 117 is used to easily and quickly discharge the air present in the water purification cartridge l when raw water is introduced from the inlet 104 to the raw water treatment section composed of activated carbon 109 and the like. belongs to. Note that the actual air venting is performed using the air venting mechanism 11 mentioned above.
This can be done by attaching a hydrophobic film that allows air to pass through but does not allow raw water to pass through the air vent port in step 7, or by touching the screw with a screw to open the air vent port, or by pushing it with your hand to open the air vent port. It can be implemented by

In addition, excluding the above-mentioned activated carbon 109 and separation filtration membrane 110,
Each member constituting the water purification 23 is not particularly limited, but may be made of, for example, metals such as stainless steel, copper, and aluminum, or alloys thereof, or plastics such as BS resin and polycarbonate resin. Preferably manufactured.

Although the present invention has been specifically explained above based on Examples, it goes without saying that the water purifier of the present invention is not limited to what is shown in the Examples.

For example, the block base includes a raw water supply section that allows raw water to flow into the inlet of the water purification cartridge and a purified water delivery section that allows purified water to flow out from the outlet of the water purification cartridge. If so, its specific structure can be changed in various ways, and it goes without saying that the shape of the discharge pipe connected to the purified water delivery section can also be changed arbitrarily.

〔Effect of the invention〕

The water purifier of the present invention includes a compact water purifying cartridge that is detachable and easy to handle, and has excellent water purifying performance.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view schematically showing a water purifier as an embodiment of the present invention, FIG. FIG. 3 is a perspective view schematically showing the water purifier. l...Water purification cartridge 2...Flock base 101...Outer container 102...Inner cylinder +03...
-Outer space 104...Inlet 105...Inner space 106-...Outlet 107...Water hole 1
08.-Second filter 109...Activated carbon 11
0...Separation filtration membrane 111...Filter guard 113--First filter 21--Raw water supply section 22.--Purified water delivery section Fig. 2(a) Fig. 3

Claims (2)

[Claims] (1) A water purifier in which a water purification cartridge is removably attached to a block base having a raw water supply part and a purified water delivery part, and the water purification cartridge has an inner cylinder arranged inside an outer container. a double-structured container section provided, an inlet for letting water flow into the outer space formed by the outer container and the inner cylinder, and an outlet for letting water flow out from the inner space located inside the inner cylinder. The outer space and the inner space are communicated with each other through a water hole formed in the inner cylinder and are isolated via a filter, and the outer space is filled with activated carbon and A separation filtration membrane is loaded in the inner space, and water that flows from the raw water supply section through the inlet into the outer space passes through the activated carbon, and then passes through the water passage hole into the inner space. A water purifier characterized in that the water is introduced into the water, is further purified by passing through the separation filtration membrane, and is sent out from the purified water delivery section via the outflow port. (2) The water purification cartridge is installed on the base block, and the inlet and outlet are both located near the lower end, and the water passage hole is located near the upper end. The water purifier according to claim (1).