JP4075711B2 - Water purification cartridge - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water purification cartridge that purifies water by adsorbing chlorine ions and lead contained in water with activated carbon.
[0002]
[Prior art]
Conventionally, this type of water purification cartridge is used in, for example, a water purifier or an alkali ion water conditioner. The water purification cartridge is generally filled with granular (powder) activated carbon that adsorbs chlorine ions, lead, and the like in a cylindrical case, and the water is passed through the activated carbon filling portion, thereby supplying water. Configured to purify. The basic structure of the water purification cartridge is roughly divided into two types. The first is a structure in which an inlet is provided on one end side of the cylindrical case and an outlet is provided on the other end side. Secondly, a cylindrical inner case is provided in the cylindrical outer case, and the gap between the cases is filled with activated carbon, an inlet is provided in the outer case, and an outlet is provided in the inner case. is there. The latter has a greater effect of reducing the pressure loss of the water fed into the cartridge than the former. Hereinafter, an example of the latter will be described with reference to FIGS.
[0003]
FIG.3 and FIG.4 is typical sectional drawing of the water purifier using the water purification cartridge based on a prior art. FIG. 3 shows a state when water is not flowing through the water purifier, and FIG. 4 shows a state when water is flowing through the water purifier. As illustrated, the water purifier 100 includes a hollow fiber membrane cartridge 120 and a water purification cartridge 130 filled with activated carbon that adsorbs chlorine ions, lead, and the like.
[0004]
The water purification cartridge 130 includes a cylindrical outer case 131 and a cylindrical inner case 133 provided concentrically inside the outer case 131. Then, the annular gap between the outer case 131 and the inner case 133 is filled with granular (powder) activated carbon 170 that adsorbs chlorine ions, lead and the like. The cylindrical portion of the outer case 131 is provided with a plurality of inlets 132 through which water outside the outer case 131 enters the inner side of the outer case 131 over substantially the entire area from one end side to the other end side of the outer case 131. . In addition, the cylindrical portion of the inner case 133 has a plurality of openings 134 through which water that has passed through the filling portion of the activated carbon 170 enters the inner case 133, from the one end side to the other end side of the inner case 133. It is provided over the entire area.
[0005]
Next, the usage method of the water purifier 100 comprised in this way is demonstrated. First, water to be purified such as tap water is fed into the outer peripheral portion of the water purification cartridge 130. Then, water is guided from the plurality of inlets 132 into the outer case 131. Then, the water is further guided to the inside of the inner case 133 through a plurality of openings 134 provided in the inner case 133 through the filling portion of the activated carbon 170. Then, the water passes through the inside of the inner case 133 and is discharged from one end of the inner case 133. Through the above process, chlorine ions and lead contained in the water are adsorbed by the activated carbon 170. Thereby, the chlorine ion, lead, etc. which are contained in water are removed, and water is purified. The water discharged from the inner case 133 is sent to the hollow fiber membrane cartridge 120, and foreign matters contained in the water are removed by a filtering action.
[0006]
As described above, the water purifier 100 can remove chlorine ions, lead, and the like contained in water with the water purification cartridge 130, and can remove foreign matters contained in the water with the hollow fiber membrane cartridge 120.
[0007]
By the way, the granular (powder) activated carbon 170 filled in the annular gap between the outer case 131 and the inner case 133 is one end side (the outlet of the inner case 133) by the pressure of flowing water as shown in FIG. Gather on the side). Accordingly, a region S in which the activated carbon 170 does not exist is generated in the annular gap between the outer case 131 and the inner case 133.
[0008]
Here, as the activated carbon 170 capable of removing chlorine ions, lead and the like, generally, activated carbon 170 having a function of mainly removing chlorine ions and having a lead remover added thereto is used. In this case, the function of removing chlorine ions is high, but the function of removing lead is generally low. Activated carbon 170 also generally has a function of removing trihalomethane, but its removal effect is lower than that of chlorine ions. Therefore, lead and trihalomethane contained in the water cannot be sufficiently removed unless the water passes through the packed portion of the activated carbon 170 for a long distance.
[0009]
As described above, when the region S in which the activated carbon 170 does not exist is generated, a portion (for example, 1 in FIG. 4) in which the distance passing through the filling portion of the activated carbon 170 of water is shortened is generated. Thereby, lead and trihalomethane contained in water may not be sufficiently removed. This is a problem that is likely to occur particularly when the activated carbon 170 is not sufficiently filled.
[0010]
Moreover, in the area | region with which the activated carbon 170 is filled, the distance through which the water passes the filling part of the activated carbon 170 is substantially equal throughout the whole area. Specifically, the distance corresponds approximately to the difference between the inner periphery radius of the outer case 131 and the outer periphery radius of the inner case 133. Therefore, there is a limit to reducing the diameter of the outer case 131, particularly under the condition that the removal rate of lead and trihalomethane is set to a certain level or more.
[0011]
[Problems to be solved by the invention]
One of the objects of the present invention is to prevent the distance passing through the water-filled portion of activated carbon from being shortened. Further, along with this, it is possible to prevent insufficient removal of lead and trihalomethane contained in water.
[0012]
One of the objects of the present invention is to exhibit stable purification performance.
[0013]
Further, as one of the objects of the present invention, it is possible to reduce the size of the cartridge while maintaining stable purification performance.
[0014]
[Means for Solving the Problems]
The water purification cartridge of the present invention is also provided with a cylindrical inner case in a cylindrical outer case, and the gap between these cases is filled with activated carbon, and an inlet is provided in the outer case, and an outlet is provided in the inner case. Adopted structure. In order to achieve the above object, in the present invention, a plurality of openings provided in the inner case for putting the water that has passed through the activated carbon filling portion into the inner case are provided on the outlet side of the inner case. It was arranged so as to be biased.
[0015]
By comprising in this way, even if it is a case where activated carbon gathers on the exit side by the flow of water, the distance which passes the filling part of activated carbon of water can fully be ensured. In addition, with respect to the distance passing through the water-filled activated carbon, a portion having a long distance can be provided. As a result, by narrowing the outer case, a short part occurs in the distance passing through the activated carbon filling part, and in this part, there is a risk that lead removal may be insufficient, but the activated carbon filling part Lead can be sufficiently removed by a portion having a long distance passing through. Therefore, even if the outer case is thinned, the lead removal rate can be secured below a certain level in the entire water purification cartridge.
[0016]
As a more specific water purification cartridge of the present invention,
An outer case having a tubular portion;
An inner case having a cylindrical portion provided in the outer case;
In a water purification cartridge provided with activated carbon that is filled in a gap between the outer case and the inner case and adsorbs at least chlorine ions and lead contained in water,
In the cylindrical portion of the outer case, a plurality of inlets for introducing water outside the outer case into the inner side of the outer case are provided over substantially the entire area from one end side to the other end side of the outer case,
The cylindrical portion of the inner case is provided with a plurality of openings that allow water that has passed through the activated carbon filling portion to enter the inner case,
And, on one end side of the inner case, an outlet is provided for discharging water put inside the inner case from the inner case,
A plurality of openings provided in the cylindrical portion of the inner case are provided to be biased toward one end side of the inner case.
[0017]
According to the configuration of the present invention, water outside the outer case is introduced into the outer case from a plurality of inlets provided over substantially the entire region from one end side to the other end side of the outer case. And the water introduced into the inner side of the outer case is guided to the inner side of the inner case through a plurality of openings provided in the inner case through the activated carbon filling portion. And the water guide | induced to the inner side of an inner case goes out from the exit of the one end side of an inner case. Through this process, at least chlorine ions and lead contained in the water are adsorbed on the activated carbon.
[0018]
Moreover, according to the structure of this invention, the several opening part provided in the cylindrical part of the inner case is biased and provided in the one end side (namely, exit side) of the inner case. Therefore, there are the following advantages. The filled activated carbon collects on one end side (the outlet side provided in the inner case) by the pressure of flowing water. Thereby, the area | region where activated carbon does not exist generate | occur | produces on the other side. However, as described above, since the plurality of openings are provided so as to be biased toward the one end side, it is possible to prevent the distance passing through the activated carbon filling portion from being shortened. In addition, the short distance said here means that it is shorter than the distance from the inner side of an outer case to the outer side of an inner case. Thereby, it can prevent that the removal of the lead contained in water becomes inadequate. Therefore, stable purification performance is exhibited.
[0019]
In addition, with respect to the distance passing through the water-filled activated carbon, a portion having a long distance can be provided. As a result, by narrowing the outer case, a short part occurs in the distance passing through the activated carbon filling part, and in this part, there is a risk that lead removal may be insufficient, but the activated carbon filling part Lead can be sufficiently removed by a portion having a long distance passing through. Therefore, even if the outer case is thinned, the lead removal rate can be secured below a certain level in the entire water purification cartridge. Therefore, it is possible to reduce the size of the cartridge while maintaining stable purification performance.
[0020]
A rod-like member that is thinner than the inner case and supports the inner case may be provided on the other end side of the inner case.
[0021]
If it does in this way, the quantity which can be filled with activated carbon can be increased, and positioning of an inner case is attained.
[0022]
The activated carbon may also adsorb trihalomethane.
[0023]
As in the case of lead, trihalomethane can be prevented from being insufficiently removed.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Exemplary embodiments of the present invention will be described in detail below with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. Absent.
[0025]
With reference to FIG.1 and FIG.2, the water purification cartridge which concerns on embodiment of this invention is demonstrated. FIG.1 and FIG.2 is typical sectional drawing of the water purifier using the water purifying cartridge which concerns on embodiment of this invention. FIG. 1 shows a state when water is not flowing through the water purifier, and FIG. 2 shows a state when water is flowing through the water purifier. 1 and 2, only the components relating to the hollow fiber membrane cartridge and the water purification cartridge that are detachably provided in the water purifier are shown, and other members such as a water purifier free case are omitted. Yes.
[0026]
As illustrated, the water purifier 10 includes a hollow fiber membrane cartridge 20 and a water purification cartridge 30 filled with granular (powder) activated carbon 60 that adsorbs chlorine ions, lead, and the like. Further, the water purifier 10 includes a fitting member 40 fitted to the end of the hollow fiber membrane cartridge 20 and a connection member 50 for connecting the hollow fiber membrane cartridge 20 and the water purification cartridge 30.
[0027]
The hollow fiber membrane cartridge 20 includes a cylindrical case 21, a hollow fiber membrane bundle 22 composed of a plurality of hollow fiber membranes filled in the case 21, and an end portion of the U-shaped folded hollow fiber membrane bundle 22. And a potting portion 23 for sealing and fixing so that only the hollow interior of each hollow fiber membrane is opened.
[0028]
Further, the fitting member 40 is provided with a discharge port 41 for discharging the purified water. Further, the connecting member 50 includes a first fitting portion 51 that is fitted to the end portion of the hollow fiber membrane cartridge 20, a second fitting portion 52 that is fitted to the end portion of the water purification cartridge 30, and an inner case 34 described later. The support part 53 which supports and positions one end of this is provided.
[0029]
The water purification cartridge 30 includes a bottomed cylindrical (cylindrical) outer case 31 and a bottomed cylindrical (cylindrical) inner case 34 provided concentrically inside the outer case 31. Then, the annular gap between the outer case 31 and the inner case 34 is filled with granular (powder) activated carbon 60. The activated carbon 60 has a function of adsorbing chlorine ions and lead. In addition, the activated carbon 60 has a function of adsorbing, for example, trihalomethane.
[0030]
The cylindrical portion of the outer case 31 is provided with a plurality of inlets 32 through which water outside the outer case 31 enters the outer case 31 from substantially one end to the other end. ing. The bottom portion of the outer case 31 includes a support portion 33 that supports and positions the other end of the inner case 34. The cylindrical portion of the inner case 34 is provided with a plurality of openings 35 through which water that has passed through the filling portion of the activated carbon 60 enters the inner case 34. Further, an outlet 39 is provided on one end side of the inner case 34 to discharge water introduced into the inner case 34 from the inner case 34. Here, as shown in FIGS. 1 and 2, the plurality of openings 35 described above are provided to be biased toward the outlet 39.
[0031]
A rod-like member 36 having a smaller diameter than the inner case 34 is provided on the other end side of the inner case 34. In the present embodiment, the inner case 34 and the rod-shaped member 36 are integral parts made of the same material. One end side (exit side) of the inner case 34 is supported by the support portion 53 of the connection member 50, and the rod-shaped member 36 on the other end side of the inner case 34 is supported by the support portion 33 of the outer case 31. Thereby, the inner case 34 is positioned with respect to the outer case 31.
[0032]
In addition, a mesh member 37 that allows water to pass while preventing the passage of activated carbon is provided on the inner periphery of the outer case 31. Furthermore, a mesh member 38 that allows water to pass while preventing the passage of activated carbon is also provided on the inner periphery of the inner case 34. However, the mesh member 38 may be provided on the outer periphery of the inner case 34. These mesh members 37 and 38 are provided to prevent the activated carbon from flowing out of the outer case 31 and the inner case 34. Specific examples of the mesh members 37 and 38 include non-woven fabric, cloth, mesh, filter paper, and fiber. In addition, the mesh members 37 and 38 can be fixed by providing portions that sandwich the mesh members 37 and 38 at both ends of the outer case 31 and both ends of the inner case 34, for example.
[0033]
Next, the usage method of the water purifier 10 comprised in this way is demonstrated. First, water to be purified such as tap water is fed into the outer peripheral portion of the water purification cartridge 30. Then, water is guided from the plurality of inlets 32 into the outer case 31. Then, the water is further guided to the inside of the inner case 34 from the plurality of openings 35 provided in the inner case 34 through the filling portion of the activated carbon 60. Then, the water passes through the inside of the inner case 34 and is discharged from the outlet 39 of the inner case 34. Through the above process, chlorine ions, lead and the like contained in the water are adsorbed by the activated carbon 60. Thereby, the chlorine ion, lead, etc. which are contained in water are removed, and water is purified.
[0034]
Then, the water discharged from the inner case 34 is sent to the hollow fiber membrane cartridge 20. The water fed into the case 21 of the hollow fiber membrane cartridge 20 permeates from the outer wall surface side of the hollow fiber membrane into the hollow interior. In this process, foreign substances contained in the water are removed by the filtering action. Thereafter, the purified water is discharged from the end of the hollow fiber membrane, and is further discharged from the discharge port 41 of the fitting member 40.
[0035]
As mentioned above, according to the water purifier 10 which concerns on this Embodiment, the chlorine ion, lead, etc. which are contained in water are removed by the water purification cartridge 30, and the foreign material contained in water by the hollow fiber membrane cartridge 20 Can be removed.
[0036]
In the present embodiment, the plurality of openings 35 provided in the inner case 34 are biased toward the outlet 39 side of the inner case 34. Therefore, there are the following advantages. The filled activated carbon 60 gathers on one end side (the outlet 39 side of the inner case 34) due to the pressure of flowing water. Thereby, the area | region S in which the activated carbon 60 does not exist generate | occur | produces on the other side. However, as described above, since the plurality of openings 35 are provided so as to be biased toward the outlet 39, it is possible to prevent the distance through the filling portion of the activated carbon 60 of water from being shortened. The short distance here means that it is shorter than the distance corresponding to the difference between the inner periphery radius of the outer case 31 and the outer periphery radius of the inner case 34. That is, as shown in FIG. 2, the distance passing through the filling portion of the activated carbon 60 of water is not substantially shorter than the distance from the inner periphery of the outer case 31 to the outer periphery of the inner case. Thereby, it can prevent that the removal of the lead contained in water which is generally difficult to remove becomes insufficient. In addition, it is considered that trihalomethane contained in water can be prevented from becoming insufficiently removed. Therefore, stable purification performance is exhibited.
[0037]
Moreover, regarding the distance passing through the filling portion of the activated carbon 60 of water, a portion having a long distance (for example, L in FIG. 2) can be provided. This has the following advantages. When the outer case 31 is made thinner, the distance from the inner periphery of the outer case 31 to the outer periphery of the inner case (corresponding to the distance passing through the filling portion of the water activated carbon 60) becomes shorter. As a result, there is a risk that lead removal may be insufficient at a portion where the distance is short. However, the lead can be sufficiently removed by the portion having a long distance passing through the water-filled activated carbon portion. Therefore, in the whole water purification cartridge 30, the lead removal rate can be secured below a certain level. The same applies to trihalomethane. Therefore, the water purification cartridge 30 can be reduced in size while maintaining stable purification performance. However, it is desirable that the distance from the inner periphery of the outer case 31 to the outer periphery of the inner case is at least a minimum length that can remove lead or trihalomethane.
[0038]
In the present embodiment, the inner case 34 is supported on the other end side of the inner case 34 by a rod-shaped member having a smaller diameter than the inner case 34. Therefore, compared with the case where both ends are supported only by the inner case, the filling amount of the activated carbon 60 can be increased. Alternatively, even if the inner case 34 is made smaller, the same or necessary amount of activated carbon 60 can be filled.
[0039]
【The invention's effect】
As described above, according to the present invention, stable purification performance can be exhibited. Further, it is possible to reduce the size of the cartridge while maintaining stable purification performance.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of a water purifier using a water purification cartridge according to an embodiment of the present invention (when water is not flowing through the water purifier).
FIG. 2 is a schematic cross-sectional view of a water purifier using a water purifying cartridge according to an embodiment of the present invention (when water is flowing through the water purifier).
FIG. 3 is a schematic cross-sectional view of a water purifier using a water purification cartridge according to the prior art (when water is not flowing through the water purifier).
FIG. 4 is a schematic cross-sectional view of a water purifier using a water purification cartridge according to the prior art (when water is flowing through the water purifier).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Water purifier 20 Hollow fiber membrane cartridge 21 Case 22 Hollow fiber membrane bundle 23 Potting part 30 Water purification cartridge 31 Outer case 32 Inlet 33 Support part 34 Inner case 35 Opening part 36 Rod-shaped member 37, 38 Net-like member 39 Outlet 40 Fitting member 41 discharge port 50 connecting member 51 first fitting part 52 second fitting part 53 support part 60 activated carbon

Claims (3)

An outer case having a tubular portion;
An inner case having a cylindrical portion provided in the outer case;
In a water purification cartridge provided with activated carbon that is filled in a gap between the outer case and the inner case and adsorbs at least chlorine ions and lead contained in water,
In the cylindrical portion of the outer case, a plurality of inlets for introducing water outside the outer case into the inner side of the outer case are provided over substantially the entire area from one end side to the other end side of the outer case,
The cylindrical portion of the inner case is provided with a plurality of openings that allow water that has passed through the activated carbon filling portion to enter the inner case,
And, on one end side of the inner case, an outlet is provided for discharging water put inside the inner case from the inner case,
The water purification cartridge according to claim 1, wherein the plurality of openings provided in the cylindrical portion of the inner case are provided so as to be biased toward one end of the inner case. The water purification cartridge according to claim 1, wherein a rod-like member that is thinner than the inner case and supports the inner case is provided on the other end side of the inner case. The water purification cartridge according to claim 1 or 2, wherein the activated carbon also adsorbs trihalomethane.

Images