JP2009297689A - Water-cleaning cartridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-cleaning cartridge which is provided with a spacer member arranged along the inner circumferential surface of a case in a simple configuration, and is capable of reducing a manufacturing cost. <P>SOLUTION: The water-cleaning cartridge 1 comprises: the case 10; a cap 20 fitted to the case 10; the spacer member 30 arranged along the inner circumferential surface of the case 10; filter material units 40A, 40B arranged on the central part of the case 10; a bag material 50 arranged along the spacer member 30; particulate active carbon 60 packed into the bag material 50; a perforated plate 70 arranged on the upper end side of the case 10; and pressing members 81, 82 interposed between the perforated plate 70 and the filter material unit 40A. The spacer member 30 is prepared by curving a raw material which is formed by braiding a warp 31 and a weft 32 of a thermoplastic resin into a vertical mesh network shape and by heat-melting intersections of the warp and weft. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a water purification cartridge that purifies raw water such as tap water with a filter medium to obtain purified water.

  Tap water contains components that cause turbidity such as fine sand and red rust, and a odor component caused by chlorine for sterilization.

  Therefore, a water purification cartridge for filtering tap water (raw water) with activated carbon or the like is widely used.

  Conventionally, as such a water purification cartridge, a cylindrical ceramic filter is disposed in a cylindrical case, a cylindrical spacer member is disposed along the inner peripheral surface of the case, and activated carbon is disposed between the ceramic filter and the spacer member. Is arranged (Japanese Patent Laid-Open No. 2007-167742).

The spacer member of the publication has a cylindrical lattice and a fine mesh attached to the lattice. The cylindrical lattice is separated from the inner peripheral surface of the case by a predetermined distance, and there is a water passage gap between the lattice and the inner peripheral surface of the case. Water flows into the granular activated carbon layer from this water passage gap, passes through a ceramic filter, becomes purified water, and is taken out of the case.
JP 2007-167742 A

  In the water purification cartridge disclosed in Japanese Patent Application Laid-Open No. 2007-167742, a dedicated spacer member that matches the size of the case is necessary, and the cost is high.

  An object of the present invention is to provide a water purification cartridge in which the configuration of a spacer member arranged along the inner peripheral surface of a case is simple and the manufacturing cost can be reduced.

  The water purification cartridge of Claim 1 is provided with the cylindrical case, the filter medium arrange | positioned in this case, and the spacer member arrange | positioned along the internal peripheral surface of this case, The raw | natural water introduced into this case In the water purification cartridge that flows through the spacer member and permeates the filter medium to become purified water, the spacer member is formed by bending a sheet-like raw material into the case. .

  The water purification cartridge according to claim 2 is characterized in that, in claim 1, the spacer member is in contact with the inner peripheral surface of the case by its own elasticity.

  A water purification cartridge according to a third aspect is the water purification cartridge according to the first or second aspect, wherein the raw material has a warp and a weft of a synthetic resin braided in a mesh shape, and an intersection of the warp and the weft is fused. The raw material has a thickness larger than the yarn diameter of the warp and the weft at the intersection, and the raw material extends in a direction parallel to the axis of the case, and the weft is the case. It is curved so as to extend in the circumferential direction, and is inserted into the case.

  The water purification cartridge according to a fourth aspect is the water purification cartridge according to the third aspect, wherein the thickness of the raw material at the intersection is 1.1 to 3 times the yarn diameter of the weft and the yarn diameter of the weft and the warp It is characterized by being smaller than the sum.

  A water purification cartridge according to claim 5 is the water purification cartridge according to any one of claims 1 to 4, wherein the filter medium includes a bag material and a granular filter medium filled in the bag material, and the bag material is the spacer. It arrange | positions so that a member may be contact | connected, It is characterized by the above-mentioned.

  The water purification cartridge according to claim 6 is the water purification cartridge according to any one of claims 1 to 4, wherein the filter medium includes a cylindrical filter medium formed into a cylindrical shape, a water-permeable bag material containing the cylindrical filter medium, A granular filter medium filled between the bag material and the cylindrical filter medium, the bag medium is disposed so as to contact the spacer member, and the raw water passes through the granular filter medium, and then the cylindrical filter medium. The filter medium passes through the filter medium and becomes purified water.

  According to a seventh aspect of the present invention, there is provided a water purification cartridge according to the sixth aspect, wherein the cylindrical filter medium comprises a filter medium unit having a tubular ceramic filter and a molded filter medium surrounding the outer periphery of the ceramic filter.

  The water purification cartridge according to an eighth aspect is the water purification cartridge according to the seventh aspect, wherein a plurality of filter medium units are coaxially arranged.

  In the water purification cartridge of the present invention, the spacer member arranged along the inner peripheral surface of the case is inserted into the case by curving a sheet-like raw material, and the configuration is simple and low cost. . Even when the diameter of the case is changed due to a design change or the like, it can be dealt with by simply changing the dimensions of the sheet-like raw material.

  If the spacer member is configured to abut on the inner peripheral surface of the case by its own elasticity, the operation of arranging the spacer member along the inner peripheral surface of the case becomes simple, and the assembly operation of the water purification cartridge can be easily performed. It becomes possible.

  As the raw material, it is preferable that the warp and weft of the synthetic resin are braided in a mesh shape, and the intersection of the warp and weft is fused. The thickness of the raw material at this intersection is preferably 1.1 to 3 times the yarn diameter of the weft and is smaller than the sum of the weft and warp yarn diameters. Such raw materials are excellent in durability and inexpensive. Moreover, since this raw material can be easily curved so that the warp is in a direction parallel to the axial line of the case, it can be easily inserted into the case.

  The filter medium may be composed exclusively of a granular filter medium, but the combined use of the granular filter medium and the cylindrical filter medium improves the quality of purified water.

  As the cylindrical filter medium, a filter medium unit in which the outer periphery of the ceramic filter is surrounded by a formed filter medium is suitable. In addition, by arranging a plurality of filter medium units coaxially, the filter medium units can be provided in a case having a large length in the cylinder axis direction.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a longitudinal sectional view of a water purification cartridge according to an embodiment, FIG. 2 is a longitudinal sectional view of a water purification cartridge from which bag materials and granular activated carbon are removed, and FIG. 3 is an exploded view showing a case and a spacer member. FIG. 4 is a longitudinal sectional view showing a method for filling granular activated carbon, FIG. 5 (a) is a perspective view of the raw material of the spacer member, and FIGS. 5 (b) and (c) are B in FIG. It is sectional drawing which follows the -B line and CC line.

  In the following description of the embodiment, the upper and lower sides refer to the upper and lower sides in FIG. The installation posture of the water purification cartridge 1 is not limited in any way, and the cylindrical axis direction of the case 10 disposed in the kitchen cabinet or the like may be any of a vertical direction, a horizontal direction, and an oblique direction.

  The water purification cartridge 1 includes a case 10, a cap 20 attached to the case 10, a spacer member 30 along the inner peripheral surface of the case 10, filter medium units 40 </ b> A and 40 </ b> B disposed at the center of the case 10, The bag material 50 along the spacer member 30, the granular activated carbon 60 filled in the bag material 50, the perforated plate 70 disposed on the upper end side of the case 10, the perforated plate 70 and the filter medium unit 40A The presser members 81 and 82 interposed therebetween are provided.

  The case 10 is a bottomed cylindrical shape having a cylindrical body portion 11 and a bottom surface portion 12 that closes the bottom surface of the body portion 11. The central portion of the bottom surface portion 12 is a curved portion 12a that curves and protrudes into a spherical shell shape in the case. In the case 10, an annular wall 13 is erected from the peripheral edge of the curved portion 12a. The diameter of the annular wall 13 is slightly larger than the outer diameter of the filter medium units 40A and 40B.

  A male screw 15 is provided on the upper outer peripheral surface of the case 10. An O-ring groove is provided on the outer peripheral surface of the case 10 on the upper end side of the male screw 15, and an O-ring 16 is attached to the O-ring groove. A flange 17 is provided below the male screw 15.

  The cap 20 is for closing the upper end side of the case 10, and includes a circular canopy portion 21, a peripheral wall portion 22 connected to the periphery of the canopy portion 21, and a lower portion of the inner peripheral surface of the peripheral wall portion 22. A provided female screw 23, a nozzle-like outlet 25 standing from the center of the canopy 21, and a nozzle standing from the canopy 21 between the outlet 25 and the periphery of the canopy 21 A cylindrical inflow port 24, a joint tube portion 26 that projects from the bottom surface of the canopy portion 21 coaxially with the outflow port 25, and a step portion 27 that is provided on the upper portion of the inner peripheral surface of the peripheral wall portion 22. Yes. It is comprised so that the outer periphery of the perforated board 70 may overlap with this step part 27. FIG. An inflow chamber 28 is formed between the perforated plate 70 and the canopy 21.

  The spacer member 30 is obtained by bending a sheet-like raw material in which warp yarns 31 and weft yarns 32 of thermoplastic synthetic resin such as polypropylene shown in FIG. 5 are braided in an orthogonal stitch shape and the intersections are heat-sealed. It is. The yarn diameter d of the warp yarn 31 and the weft yarn 32 is preferably about 0.5 to 5.0 mm, particularly about 0.5 to 1.5 mm, and the pitch (yarn interval) during braiding is preferably 2 to 7 mm. Due to heat fusion, the intersection 33 becomes a raised protrusion. The thickness t of the intersection point 33 is preferably 1.1 to 3 times, particularly 1.5 to 2.5 times the yarn diameter d of the weft yarn. The thickness t is preferably smaller than the sum of the warp yarn diameter and the weft yarn diameter.

  This synthetic resin sheet-shaped raw material has elasticity. As shown in FIG. 3, the warp 31 is parallel to the axis of the case 10 and the weft 32 is in the circumferential direction of the case 10 so that the warp 31 is bent in the direction of arrow a in FIG. insert. When the hand is released from the spacer member 30, the spacer member 30 expands by its own elasticity and abuts against the inner peripheral surface of the case 10.

  The filter medium units 40 </ b> A and 40 </ b> B include a tubular ceramic filter 41 and a cylindrical shaped filter medium 42 surrounding the ceramic filter 41. In this embodiment, the formed filter medium is made of activated carbon (activated carbon fiber in this embodiment) formed into a cylindrical shape, but is not limited thereto. The thickness of the tubular ceramic filter 41 (1/2 of (outer diameter-inner diameter)) is usually about 1.0 to 2.2 mm, and the thickness of the formed filter medium (1/2 of (outer diameter-inner diameter)). Is usually about 5 to 20 mm.

  Although illustration is omitted, a layer of diatomaceous earth is provided between the outer peripheral surface of the ceramic filter 41 and the inner peripheral surface of the molded filter medium 42 so that fine activated carbon waste does not flow into the ceramic filter 41. ing. Although not shown, a non-woven fabric is wound around the outer periphery of the molded filter medium 42 to prevent the molded filter medium 42 from being broken or collapsed. Synthetic resin end plates 43 and 44 are bonded to the upper end surface and the lower end surface of the molded filter medium 42, respectively.

  A circular opening is provided at the center of each end plate 43, 44, and the end of the tubular ceramic filter 41 faces the opening. A sealing agent 45 is filled between the inner peripheral edge of each end plate 43, 44 and the end of the ceramic filter 41. A sealing agent 46 is filled between the outer peripheral edge of the end plates 43 and 44 and the outer peripheral edge of the molded filter medium 42.

  In the filter medium unit 40A, a joint cylinder portion 47 is erected from the upper end plate 43, and an O-ring 48 (see FIG. 4) is mounted on the outer periphery of the upper end portion of the joint cylinder portion 47. .

  In the filter medium unit 40B, a sealant 49 is attached to the center portion on the lower surface side to close the opening of the end plate 44 and the lower end surface portion of the ceramic filter 41. The end plate 44 at the lower end of the filter medium unit 40A and the end plate 43 at the upper end of the filter medium unit 40B are bonded together, and the filter medium units 40A and 40B are integrated. The ceramic filters 41 of the filter medium units 40A and 40B are connected in a coaxial manner. Note that the end plate 44 in the filter medium unit 40B may be a disk without an opening. In this case, it is not necessary to attach the sealing agent 49. In addition, a disc in which the lower end end plate 44 of the filter medium unit 40A and the upper end end plate 43 of 40B are bonded together may be an integrally formed disc.

  The bag material 50 is made of a non-woven fabric of synthetic resin fibers such as polypropylene, and has a rectangular shape in which only one side is opened in a flatly extended state. When the bag material 50 is expanded in a cylindrical shape in the case 10, the bag material 50 overlaps the bottom surface portion 12 of the case 10 and the inner peripheral surface of the spacer member 30, and the inlet portion 50 a of the bag material 50 is outside the case 10. It has a size to extend. The thickness of the bag material 50 is usually about 0.1 to 0.15 mm. Moreover, the thickness of the packed layer of the granular activated carbon 60 formed in the bag material 50 is usually about 15 to 35 mm. In addition, as this granular activated carbon 60, the thing with an average particle diameter of about 200-300 micrometers is preferable.

  The perforated plate 70 is a thin disc-shaped synthetic resin plate, and is provided with a large number of through holes 71 so as to penetrate in the thickness direction. A circular opening into which the joint tube portion 26 is inserted is provided at the center of the perforated plate 70.

  The pressing members 81 and 82 are disc-shaped members each having impermeableness and elasticity such as sponge. The upper pressing member 82 is smaller than the inner diameter of the case 10, and the lower pressing member 81 has substantially the same diameter as the inner diameter of the case 10. An opening into which the joint tube portion 26 is inserted is provided in the center portion of the pressing members 81 and 82.

<Assembly procedure of water purification cartridge 1>
To assemble the water purification cartridge 1, first, a spacer member 30 obtained by rolling a sheet-like raw material into a cylindrical shape as shown in FIG. 3 is inserted into the case 10. Next, as shown in FIG. 4, the joined body of the filter media units 40A and 40B is inserted into the bag material 50, the bag material 50 is inserted into the case 10, and the inlet 50a of the bag material 50 is extended outside the case 10. Let it come out. The granular activated carbon 60 is filled between the outer peripheral surface of the filter medium units 40A and 40B and the bag material 50 from the inlet 50a.

  Thereafter, the bag material inlet 50a is folded so as to overlap the upper surface of the end plate 43 of the filter medium unit 40A, and is pressed by the pressing member 81. At this time, the presser member 82 may be further overlapped with the presser member 81, but the presser member 82 may be fitted and held in the joint tube portion 26 of the cap 20.

  For the cap 20, a perforated plate 70 is mounted in advance, and a pressing member 82 is mounted as necessary.

  The cap 20 is engaged with the upper end of the case 10 and rotated, and the female screw 23 is screwed into the male screw 15. At this time, the joint cylinder part 26 is fitted onto the joint cylinder part 47.

  Thereby, the water purification cartridge 1 shown in FIG. 1 is completed.

<Water purification operations such as tap water>
When raw water such as tap water is supplied to the inlet 24 of the water purification cartridge 1, the raw water reaches the spacer member 30 through the inlet chamber 28 and the through hole 71 of the perforated plate 70. The water that has reached the spacer member 30 is guided by the spacer member 30 and supplied to the entire area of the inner peripheral surface of the case 10, passes through the bag material 50, the granular activated carbon 60, the molded filter material 42, and the ceramic filter 41 to become purified water. . The purified water flows in the order of the ceramic filter 41, the joint cylindrical portions 47 and 26, and the outlet 25, and is taken out of the case 10.

<Effect>
In this water purification cartridge 1, the spacer member 30 disposed along the inner peripheral surface of the case 10 is inserted into the case 10 by curving a sheet-like raw material, and has a simple and low configuration. Cost. Further, even when the diameter of the case 10 is changed due to a design change or the like, it can be dealt with only by changing the dimensions of the sheet-like raw material.

  In this embodiment, since the spacer member 30 is in contact with the inner peripheral surface of the case 10 by its own elasticity, the operation of arranging the spacer member 30 along the inner peripheral surface of the case 10 is easy to perform. Assembling work of the water purification cartridge 1 can be easily performed.

  In this embodiment, the warp 31 and the weft 32 of synthetic resin are braided as a raw material as a raw material, the intersection of the warp 31 and the weft 32 is fused, and the thickness t of the intersection 33 is the weft. The yarn diameter d is 1.1 to 3 times, particularly 1.5 to 2.5 times, and the thickness t is smaller than the sum of the warp yarn diameter and the weft yarn diameter. . The spacer member 30 made of such a raw material has excellent durability and is inexpensive. Further, the spacer member 30 made of this raw material can be easily bent so that the warp 31 is parallel to the axis of the case 10 and the weft 32 is circumferential of the case 10. Can be easily inserted into. Furthermore, in this structure, water can be allowed to flow in the axial direction of the warp yarn without excessively increasing the resistance. Therefore, water can be uniformly supplied to both the filter medium unit 40A and the filter medium unit 40B.

  In this embodiment, since the granular activated carbon 60, the formed filter medium 42 made of activated carbon, and the ceramic filter 41 are used in combination as the filter medium, the quality of the purified water is good.

  In this embodiment, since the filter medium units 40A and 40B are coaxially connected and used, a plurality of filter medium units having a short cylinder length can be arranged even in the case 10 having a large cylinder axis length. can do.

<Another embodiment>
In the above embodiment, the two filter medium units 40A and 40B are connected, but three or more filter medium units may be rolled. When the case 10 is short, only one filter medium unit may be used.

It is a longitudinal cross-sectional view of the water purification cartridge which concerns on embodiment. It is a longitudinal cross-sectional view of the water purification cartridge which removed the bag material and the granular activated carbon. It is a disassembled perspective view which shows a case and a spacer member. It is a longitudinal cross-sectional view which shows the filling method of granular activated carbon. (A) is a perspective view of the raw material of a spacer member, (b), (c) figure is sectional drawing which follows the BB line and CC line of (a) figure, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water purification cartridge 10 Case 20 Cap 30 Spacer member 31 Warp thread 32 Weft 33 Intersection 40A, 40B Filter medium unit 41 Ceramic filter 42 Molded filter medium 43, 44 End plate 45, 46, 49 Sealing agent 50 Bag material 60 Granular activated carbon 70 Perforated plate 81 , 82 Presser member

Claims (8)

A cylindrical case,
A filter medium disposed in the case;
In the water purification cartridge comprising a spacer member arranged along the inner peripheral surface of the case, the raw water introduced into the case flows through the spacer member and permeates the filter medium to become purified water.
The water-purifying cartridge is characterized in that the spacer member is a sheet-shaped raw material bent and inserted into the case.   The water purification cartridge according to claim 1, wherein the spacer member is in contact with the inner peripheral surface of the case by its own elasticity. The raw material according to claim 1 or 2, wherein the warp and weft of the synthetic resin are braided in a mesh shape, and the intersection of the warp and weft is fused.
The raw material has a thickness larger than the diameters of the warp and the weft at the intersection,
The water purification cartridge, wherein the raw material is curved and inserted in the case so that the warp extends in a direction parallel to the axis of the case and the weft extends in the circumferential direction of the case.   In Claim 3, The thickness of the raw material at the intersection is 1.1 to 3 times the yarn diameter of the weft and is smaller than the sum of the yarn diameter of the weft and the warp yarn. Clean water cartridge. 5. The filter medium according to claim 1, wherein the filter medium includes a bag material and a granular filter medium filled in the bag material,
A water purification cartridge, wherein the bag material is disposed so as to contact the spacer member. The filter medium according to any one of claims 1 to 4,
A tubular filter medium formed into a tubular shape;
A water-permeable bag material containing the cylindrical filter medium;
A granular filter medium filled between the bag material and the cylindrical filter medium, the bag medium is disposed so as to contact the spacer member, and the raw water passes through the granular filter medium, and then the cylinder A water purification cartridge characterized by passing through a filter medium to form purified water.   7. The water purification cartridge according to claim 6, wherein the cylindrical filter medium comprises a filter medium unit having a tubular ceramic filter and a formed filter medium surrounding the outer periphery of the ceramic filter.   The water purification cartridge according to claim 7, wherein a plurality of filter medium units are coaxially arranged.

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