JP2010005485A - Filter cartridge for water purification - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prolong life of a filtering material and to reduce its cost by making a filter cartridge for water purification hardly cloggy and making water uniformly flow therethrough. <P>SOLUTION: The filter cartridge 1 for water purification is constituted of an outside cylindrical porous filter 2 and an inside cylindrical porous filter 3 disposed in a concentric circular shape, a filtering material 4 charged in a space between the outside cylindrical porous filter 2 and the inside cylindrical porous filter 3, a sealing end cap 5 which supports one end part sides of both cylindrical porous filters 2, 3 and of the filtering material 4 and an open end cap 6 which supports another end part sides of both cylindrical porous filters 2, 3 and of the filtering material 4 and forms an outflow port 6a of purified water W'. The filtering material 4 is granular or powdery or fibrous and is not molded to a solid shape. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is mainly used in water purifiers and purification devices used for purification treatment of tap water in general households, hospitals, factories, offices, etc., so that it is difficult to block and water flows uniformly. The present invention relates to a filter cartridge for purifying water that can prolong the life of a filter medium and reduce costs.

  In recent years, deterioration of the quality of public tap water has become a problem. This is because the quality of raw tap water itself has deteriorated, and accordingly, it is necessary to inject a large amount of chlorine as an oxidizing agent or a sterilizing agent at a water purification plant.

  If the water quality itself is deteriorated or if the tap water contains a large amount of chlorine, the taste is deteriorated or an unpleasant odor is generated, which is also not preferable from the viewpoint of human health. For this reason, in general households, hospitals, factories, offices, and the like, water purifiers and purification devices that purify tap water are increasingly used.

  A cartridge using an activated carbon filter or a cartridge using granular activated carbon is widely used in the water purifier or the purification device (see, for example, Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4).

  That is, the cartridge using the activated carbon filter is composed of an activated carbon filter formed and solidified into a hollow cylinder of an appropriate length using fibrous activated carbon formed by pitch, and tap water is distributed in the radial direction. By doing so, the chlorine and impurities contained in the tap water are removed.

  In addition, cartridges using granular activated carbon are filled with a large number of granular activated carbon in the case. By passing tap water from top to bottom, chlorine and impurities contained in tap water are removed. It is like that.

  However, since the activated carbon filter is molded and solidified, the cartridge using the activated carbon filter is easily clogged with turbidity components contained in water, and the cartridge must be replaced or washed in a short period of time. In other words, there was a problem that it was inferior in economic efficiency and handling. However, since the activated carbon filter is molded and solidified, there has been a problem that the processing cost increases.

  Further, in the cartridge using granular activated carbon, when water passes through the granular activated carbon filled in the case, a water passage (bypass) is formed in the granular activated carbon, and the water may not pass uniformly. As a result, the cartridge using granular activated carbon has a problem that not all granular activated carbon is effectively used, and the purification function of water is lowered.

JP-A-9-108656 JP-A-9-117758 JP 2002-059153 A Registered Utility Model No. 3108450

  The present invention has been made in view of such problems, and its purpose is to prevent clogging and to allow water to flow uniformly, thereby extending the life of the filter medium and reducing costs. The object is to provide a filter cartridge for water purification.

  In order to achieve the above object, the invention according to claim 1 of the present invention includes an outer cylindrical porous filter and an inner cylindrical porous filter arranged concentrically, an outer cylindrical porous filter, Filter medium filled in the gap with the inner cylindrical porous filter, both cylindrical porous filter and hermetically sealed end cap that supports one end side of the filter medium in a sealed state, both cylindrical porous filter and filtration It is composed of an open end cap that supports the other end of the material in a sealed manner and forms an outlet for purified water that communicates with the inner space of the inner cylindrical porous filter. A filter cartridge for purifying water that is circulated and purified in the radial direction of a porous filter, a filter medium, and an inner cylindrical porous filter, wherein the filter medium is granular, powdery, or fiber , And the is characterized in that it is not formed into a solid shape.

  The invention of claim 2 of the present invention is the invention of claim 1, wherein the antibacterial material, the water active material, the antibacterial material and the water active material are provided in the inner space of the inner cylindrical porous filter in the cylindrical case. A quaternary filter filled with both is arranged in communication with the outlet of the open end cap, and purified water that has passed through the outer cylindrical porous filter, the filter medium, and the inner cylindrical porous filter is passed through. It is characterized in that it is configured to pass through a fourth order filter.

  The invention of claim 3 of the present invention is characterized in that, in the invention of claim 1 or claim 2, the filter medium is made of activated carbon.

  The invention of claim 4 of the present invention is characterized in that, in the invention of claim 1 or claim 2, the filter medium is made of ceramics.

  The invention of claim 5 of the present invention is the invention of claim 1 or claim 2, wherein the filter medium is copper, brass, tin, zinc, magnesium, silicon, titanium, silver, platinum, gold, germanium, vanadium. It is characterized in that it is made of any one kind or two or more kinds of metals.

  The invention of claim 6 of the present invention is characterized in that, in the invention of claim 1 or 2, the filter medium is made of a mixture of at least two kinds of activated carbon, ceramics or metal.

  The invention of claim 7 of the present invention is the invention of claim 1, claim 2, claim 3, claim 4, claim 5 or claim 6, wherein the filter material contains calcium sulfite. There is a feature.

  The invention according to claim 8 of the present invention is the outer cylindrical porous filter according to claim 1, claim 2, claim 3, claim 4, claim 5, claim 6 or claim 7. And the material of the inner cylindrical porous filter is a polypropylene resin material, a polyethylene resin material or a polyethylene terephthalate resin material.

The water purification filter cartridge of the present invention can provide the following excellent effects.
(1) The filter cartridge for water purification of the present invention is a granular, powder that is not formed into a solid shape in the gap between the outer cylindrical porous filter and the inner cylindrical porous filter arranged concentrically. Since the filter medium is filled with a fibrous or fibrous filter and water is distributed in the radial direction of the filter medium that has not been molded and solidified, the filter medium is difficult to block and the water flows uniformly in the filter medium. All filter media will be used effectively.
As a result, the filter cartridge for water purification of the present invention has a long life, and the number of replacements and washings is reduced, resulting in excellent economic efficiency and handling.
(2) In the filter cartridge for water purification according to the present invention, a granular, powdery, or fibrous filter material that has not been molded and solidified is formed in the gap between the inner cylindrical porous filter and the outer cylindrical porous filter. Since it is filled, the cost can be reduced as compared with a cartridge using a molded and solidified filter.
(3) The filter cartridge for water purification according to the present invention is such that water sequentially passes through the outer cylindrical porous filter, the filter medium, and the inner cylindrical porous filter, so that the water filtration rate is increased and filtration is performed. The life of the filter media is longer than that of a cartridge using only the material.
(4) In the filter cartridge for water purification of the present invention, the internal space of the inner cylindrical porous filter is filled with an antibacterial material or a water active material or both an antibacterial material and a water active material in a cylindrical case. The quaternary filter is arranged in communication with the outlet of the open end cap, and the clarified water that has passed through the outer cylindrical porous filter, the filter medium, and the inner cylindrical porous filter is further passed through the quaternary filter. Since it is set as the structure made to pass through, the filtration rate of water becomes still higher.
(5) When the filter medium is made of ceramics or metal, the filter cartridge for water purification of the present invention can produce various functional waters that make use of the characteristics of ceramics and metals.
(6) The filter cartridge for water purification of the present invention is prepared by freely mixing various filter media in accordance with the purpose when the filter media is made of a mixture of at least two kinds of activated carbon, ceramics or metal. In addition, since a process such as molding and solidification is not required, the filter medium can be easily and easily made.
(7) When the filter medium for water purification of the present invention contains calcium sulfite in the filter medium, the residual chlorine contained in the water can be efficiently decomposed and removed quickly.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a water purification filter cartridge 1 according to a first embodiment of the present invention. The water purification filter cartridge 1 is used for beverages mainly in general households, hospitals, factories, offices, and the like. It is used in water purifiers and purification devices that purify tap water W (water) used for cooking, bathing, etc., and of course has a purification treatment function for tap water W, and is difficult to block. Thus, the tap water W is made to flow uniformly to extend the life of the filter medium.

  That is, the water purification filter cartridge 1 includes, as shown in FIG. 1, an outer cylindrical porous filter 2 and an inner cylindrical porous filter 3 arranged concentrically, and an outer cylindrical porous filter. A granular, powdery or fibrous filter medium 4 filled in the gap between the filter 2 and the inner cylindrical porous filter 3, and both the cylindrical porous filters 2, 3 and the filter medium 4. Sealing end cap 5 that supports one end side (upper end side) in a sealed manner, and supports the other end side (lower end side) of both cylindrical porous filters 2 and 3 and filter medium 4 in a sealed state, The center end portion is composed of both cylindrical porous filters 2 and 3 and an open end cap 6 formed with an outlet 6a through which purified water W ′ that has passed through the filter medium 4 flows out. Porous filter 2, filter media And the inner cylindrical porous filter 3 circulates in the radial direction, passes through the inner space of the inner cylindrical porous filter 3 and flows out as purified water W ′ from the outlet 6 a of the open end cap 6. It is a thing.

  The outer cylindrical porous filter 2 and the inner cylindrical porous filter 3 are porous by a polypropylene resin material (PP resin material), a polyethylene resin material (PE resin material) or a polyethylene terephthalate resin material (PET resin material). It is formed in the cylindrical shape which has.

Specifically, the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3 are formed in a cylindrical shape having porosity by a nonwoven fabric or a woven fabric made of polypropylene fiber, polyethylene fiber, or polyethylene terephthalate fiber. Has been.
In addition, the water-permeable pore diameters of the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3 are granular particles filled in the gap between the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3. In addition to preventing the powdered or fibrous filter medium 4 from flowing out, the tap water W is set to such an extent that the tap water W can be removed without passing through inorganic substances or organic substances having a relatively large particle size. ing. In this embodiment, the average pore diameter of both cylindrical porous filters 2 and 3 is set to about 5 μm to 15 μm.
Further, the thicknesses of the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3 are set so that both cylindrical porous filters 2 and 3 have mechanical strength capable of maintaining a cylindrical shape. Yes.

  In the above embodiment, the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3 are made porous by a nonwoven fabric or woven fabric made of polypropylene fiber, polyethylene fiber or polyethylene terephthalate fiber. In other embodiments, the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3 are made of polypropylene resin, polyethylene resin, or polyethylene terephthalate resin. These resin particles or resin powder may be baked and hardened into a cylindrical shape. In this case, it goes without saying that both cylindrical porous filters 2 and 3 have porosity and mechanical strength that can maintain the cylindrical shape.

  The filter medium 4 is made of activated carbon, ceramics, or a mixture of two or more kinds of metals, and is granular, powdery, or fibrous, and is an outer cylindrical shape that is not formed into a solid shape. The gap between the porous filter 2 and the inner cylindrical porous filter 3 is filled. At this time, the granular or powdery filter medium 4 is larger than the diameter of the water passage holes of the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3. Is prevented from flowing out through both cylindrical porous filters 2 and 3.

  In this embodiment, the excess material 4 is granular activated carbon made from charcoal, coconut shell charcoal, coal, etc., sawdust, hard wood chips, powdered activated carbon or rayon made from charcoal, etc., The outer cylindrical porous filter 2 is made of any one or two or more kinds of fibrous activated carbons made from acrylonitrile, coal pitch, petroleum pitch, etc., and is not molded into a solid state. The gap with the inner cylindrical porous filter 3 is filled.

In the above embodiment, activated carbon is used for the filter medium 4. In other embodiments, the filter medium 4 is made of ceramic or the filter medium 4 is made of metal. May be used.
That is, the filter material 4 made of ceramic is a granular or powdery piezoelectric electronic ceramic that improves surface activity and penetrating power, a granular or powdery far-infrared ceramic that improves solubility and thermal conductivity, One or two kinds of granular or powdery mineral ceramics for improvement, granular or powdery magnetic ceramics for improving dissolution and penetration, and granular or powdery copper ion ceramics for antibacterial purposes It consists of the above granular or powdered ceramics, and is filled in the gap between the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3 in a state where it is not molded into a solid form.
On the other hand, the metal filter medium 4 is either one or two of granular or powdery metals such as copper, brass, tin, zinc, magnesium, silicon, titanium, silver, platinum, gold, germanium, vanadium, and the like. It is made of more than one kind of metal, and is filled in the gap between the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3 in a state where it is not formed into a solid form.

  Further, in the above embodiment, the filter medium 4 made of activated carbon, the filter medium 4 made of ceramics, and the filter medium 4 made of metal are used alone, but in other embodiments, The filter medium 4 may be a mixture of activated carbon and ceramic, a mixture of activated carbon and metal, a mixture of ceramic and metal, or a mixture of activated carbon, ceramic and metal.

  The filter medium 4 is mixed with an appropriate amount of granular calcium sulfite for removing residual chlorine. This calcium sulfite is characterized in that it reacts with residual chlorine while dissolving a small amount of sulfite ions in tap water W, has a high reaction rate, and efficiently decomposes residual chlorine. Therefore, the amount of water treatment can be increased.

  The sealed end cap 5 is formed in a disc shape from a resin material such as ABS resin, and supports the upper end portions of both cylindrical porous filters 2 and 3 in a sealed manner, and an outer cylindrical porous filter. The upper end opening of the gap between the inner cylindrical porous filter 3 and the inner cylindrical porous filter 3 and the upper end opening of the inner cylindrical porous filter 3 are closed in a sealed manner to prevent the filter medium 4 and water from flowing out. is there.

The open end cap 6 is formed in a disc shape by a resin material such as ABS resin, and supports the lower end side of both cylindrical porous filters 2 and 3 in a sealed manner, and also has an outer cylindrical porous filter. 2 and the inner cylindrical porous filter 3 are hermetically closed at the lower end to prevent the filter medium 4 and water from flowing out.
Further, an outlet 6 a for purified water W ′ communicating with the inner space of the inner cylindrical porous filter 3 is formed at the center of the open end cap 6. The outlet 6 a is formed by inserting and fixing a cylindrical body 6 ′ at the center of the open end cap 6. The cylindrical body 6 ′ may be formed integrally with the open end cap 6.

Thus, the water purification filter cartridge 1 having the above-described configuration is, for example, a purification device having the structure shown in FIG. 1 of JP-A-9-117758 and a structure shown in FIG. 2 of JP-A-2000-059153. Water purifier, water purifier having the structure shown in FIG. 1 of JP-A-2002-065547, water purifier having the structure shown in FIG. 1 of JP-A-2004-330120, and structure shown in FIG. The water purifier of FIG. 1, the water purifier having the structure shown in FIG. 1 of JP-A-2006-026517, the water purifier having the structure shown in FIG. 2 of JP-A-2008-104902, and FIG. 4 of the registered utility model No. 3108450 It is used by being incorporated in a water purifier having a structure, and after passing tap water W through the outer cylindrical porous filter 2, the outer cylindrical porous filter 2 and the inner cylindrical shape are used. The filter medium 4 filled in the gap with the porous filter 3 is circulated in the radial direction, and finally passes through the inner cylindrical porous filter 3 and flows out from the outlet 6a of the open end cap 6 as purified water W ′. I am doing so.
As a result, if this water purification filter cartridge 1 is used, the tap water W passes through the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3, thereby causing relatively small particles in the tap water W. Large-diameter inorganic substances, organic substances, fungi or dissolved chemical substances are removed, and tap water W passes through the filter medium 4 made of activated carbon, ceramics, or a mixture of two or more kinds in the radial direction. By doing so, it is possible to produce functional water that is purified by activated carbon or that makes use of the characteristics of ceramics and metals.

  For example, in the filter cartridge 1 for purifying water using the filter medium 4 made of activated carbon, the toxic substances such as chlorine and trihalomethane contained in the tap water W are removed by the purification action of the activated carbon, and the tap water. W is purified.

  Moreover, in the filter cartridge 1 for water purification using the filter medium 4 made of ceramics, depending on the type of ceramics used (far infrared ceramics, piezoelectric electronic ceramics, mineral ceramics, magnetic ceramics, copper ion ceramics), The tap water W is activated, antibacterial or antifungal treated, or the taste of the tap water W is improved.

Furthermore, in the filter cartridge 1 for water purification using the filter medium 4 made of metal, the type of metal used (copper, brass, tin, zinc, magnesium, silicon, titanium, silver, platinum, gold, germanium) , Vanadium, etc.), the tap water W can be antibacterial or antifungal treated, or mineral water can be added to the tap water W to produce various functional waters.
In particular, in the filter cartridge 1 for purifying water using the filter medium 4 made of a mixture of a metal such as copper, zinc, magnesium, germanium, vanadium and activated carbon, the carbon and metal of the activated carbon of the filter medium 4 in water. Due to the contact potential difference, a small amount of metal ions and hydrogen gas are generated, and the generated hydrogen gas turns water into hydrogen-dissolved water, lowering the redox potential of the water and making it difficult to oxidize.

  And in the filter cartridge 1 for water purification using the filter medium 4 containing calcium sulfite, calcium sulfite reacts with residual chlorine while dissolving a small amount of sulfite ions in water, and the residual chlorine is efficiently removed. Will be disassembled. Therefore, the processing amount of the tap water W can be increased.

As described above, the water purification filter cartridge 1 can purify water with activated carbon, and can produce functional water with the characteristics of ceramics and metals with ceramics and metals.
In addition, the purification filter cartridge 1 includes a granular, powdery, or fibrous filter material 4 that is not molded into a solid state in the gap between the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3. And the tap water W is made to flow in the radial direction of the filter medium 4 that has not been molded and solidified, so that the filter medium 4 is less likely to be blocked by turbidity components, and water is uniformly distributed in the filter medium 4. It flows and all the filter media 4 will be utilized effectively. As a result, the purification filter cartridge 1 has a long life, and the number of replacements and washings is reduced, resulting in excellent economic efficiency and handleability. However, the purification filter cartridge 1 is a cartridge using a molded and solidified filter. In comparison, the cost can be reduced.
Furthermore, since the filter cartridge 1 for purification passes water sequentially through the outer cylindrical porous filter 2, the filter medium 4 and the inner cylindrical porous filter 3, the filtration rate of water is increased and the filter medium The life of the filter medium 4 is longer than that of a cartridge using only four.
In addition, since the filter cartridge 1 is not formed into a solid state, the filter cartridge 1 for purification can be prepared by freely mixing various filter media 4 in accordance with the purpose, and can also perform steps such as molding and solidification. Since it is not necessary, the filter medium 4 can be easily and easily made.

  FIG. 2 shows a water purification filter cartridge 1 according to a second embodiment of the present invention, and the water purification filter cartridge 1 has an outer cylindrical shape arranged concentrically as shown in FIG. A granular, powdery or fibrous filter medium 4 filled in the gap between the porous filter 2 and the inner cylindrical porous filter 3 and the outer cylindrical porous filter 2 and the inner cylindrical porous filter 3. A sealed end cap 5 that hermetically supports one end side (upper end side) of both cylindrical porous filters 2, 3 and filter medium 4, and both cylindrical porous filters 2, 3 and filter medium 4 The other end side (lower end side) is hermetically supported, and an opening end is formed with an outlet 6a through which the purified water W 'that has passed through the cylindrical porous filters 2 and 3 and the filter medium 4 flows out at the center. Cap 6 and inner cylindrical hole 4 is disposed in the internal space of the filter 3 in a state of communicating with the outlet 6a of the open end cap 6, and is formed by filling a cylindrical case with an antibacterial material or a water active material or both an antibacterial material and a water active material. The secondary filter 7 and the tap water W circulate in the radial direction through the outer cylindrical porous filter 2, the filter medium 4, and the inner cylindrical porous filter 3, and then pass through the fourth filter 7 to open the end cap. The purified water W 'flows out from the outlet 6a.

The quaternary filter 7 is filled with an antibacterial material or a water active material or both an antibacterial material and a water active material in a cylindrical case formed of a resin material such as ABS resin, and a metal mesh is formed at both ends of the case. A screen made of or made of punching metal or resin is detachably attached to prevent the antibacterial material or the water active material from flowing out, and is disposed in the inner space of the inner cylindrical porous filter 3 and has its lower end. Is inserted into and supported by a cylindrical body 6 ′ that forms the outlet 6 a of the open end cap 6.
As the antibacterial material of the fourth filter 7, an inorganic antibacterial material, an organic antibacterial material or an antibacterial ceramic containing an antibacterial metal such as silver, copper or zinc is used.
As the water active material of the quaternary filter 7, natural ores such as tourmaline, limestone and granite and ceramics such as far infrared ceramics are used.

The water purification filter cartridge 1 shown in FIG. 2 is completely the same as the water purification filter cartridge 1 shown in FIG. 1 except that a quaternary filter 7 is disposed in the inner space of the inner cylindrical porous filter 3. The same part and the same structure as the water purification filter cartridge 1 shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
This water purification filter cartridge 1 can also exhibit the same effects as the water purification filter cartridge 1 shown in FIG. However, since the water purification filter cartridge 1 has the quaternary filter 7 disposed in the inner space of the inner cylindrical porous filter 3, the filtration rate of the tap water W is further increased. It can make better functional water.

It is a schematic longitudinal cross-sectional view of the filter cartridge for water purification which concerns on the 1st Embodiment of this invention. It is a schematic longitudinal cross-sectional view of the filter cartridge for water purification which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

  1 is a filter cartridge for water purification, 2 is an outer cylindrical porous filter, 3 is an inner cylindrical porous filter, 4 is a filter medium, 5 is a sealed end cap, 6 is an open end cap, 6a is an open end Cap outlet, 7 is a quaternary filter, W is tap water, W 'is purified water.

Claims (8)

  An outer cylindrical porous filter and an inner cylindrical porous filter arranged concentrically, and a filter medium filled in a gap between the outer cylindrical porous filter and the inner cylindrical porous filter; A sealed end cap that supports both cylindrical porous filters and one end of the filter medium in a sealed manner, and the other end of both cylindrical porous filters and filter medium are supported in a sealed manner, and the inner cylindrical pore It is composed of an open end cap that forms an outlet for purified water that communicates with the internal space of the filter, and the water is directed radially to the outer cylindrical porous filter, the filter medium, and the inner cylindrical porous filter. A filter cartridge for purifying water that is circulated and purified, wherein the filter medium is granular, powdery, or fibrous, and is not molded into a solid form. Purifying filter cartridge.   A quaternary filter formed by filling the inner cylindrical porous filter with an antibacterial material or water active material or both antibacterial material and water active material in the cylindrical case is connected to the outlet of the open end cap. The purified water that is disposed in a state where the purified water passes through the outer cylindrical porous filter, the filter medium, and the inner cylindrical porous filter is passed through the quaternary filter. Filter cartridge for water purification.   The filter cartridge for water purification according to claim 1 or 2, wherein the filter medium is made of activated carbon.   The filter cartridge for water purification according to claim 1 or 2, wherein the filter medium is made of ceramics.   The filter medium is made of any one or more of metals such as copper, brass, tin, zinc, magnesium, silicon, titanium, silver, platinum, gold, germanium, and vanadium. The filter cartridge for water purification according to claim 1 or 2.   The filter cartridge for water purification according to claim 1 or 2, wherein the filter medium comprises a mixture of at least two kinds of activated carbon, ceramics or metal.   The filter cartridge for water purification according to claim 1, 2, 3, 4, 5, or 6, wherein the filter medium contains calcium sulfite.   The material of the outer cylindrical porous filter and the inner cylindrical porous filter is a polypropylene resin material, a polyethylene resin material, or a polyethylene terephthalate resin material. The filter cartridge for water purification according to claim 4, claim 5, claim 6 or claim 7.

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