JPH0660484U - Cartridge for water purification - Google Patents

Abstract

(57) [Abstract] [Purpose] A hollow fiber is bent in a U shape and accommodated in the activated carbon fiber layer wound on the outer peripheral surface of the case so that the water flow is more evenly distributed. It is intended to provide a water purification cartridge. [Structure] A separating means such as a ridge 55 is provided on the outer peripheral surface of the case 32 in which the hollow fibers 41 are bent in a U shape, and the activated carbon fiber layer 35 and the case are provided by such separating means. A gap is formed between the outer peripheral surface of 32.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water purification cartridge, and more particularly to a water purification cartridge using two types of filtration materials.

[0002]

[Prior art]

 Tap water used for drinking contains about 1 ppm of chlorine for sterilization. This contained chlorine gives a person who drinks tap water a discomfort due to a chlorine odor. In addition, during the dry season, water odor that cannot be removed by normal water treatment at the water treatment plant remains in tap water, causing more discomfort than chlorine.

[0003] In order to remove such chlorine odors and blue-green odors, for example, a filter for water purification using an activated carbon fiber layer and hollow fibers as disclosed in Japanese Utility Model Publication No. 3-51032 is used. Water purifiers have been supplied and are becoming widespread.

[0004]

[Problems to be solved by the device]

 The water purification cartridge of a water purifier used in ordinary households is, for example, a combination of activated carbon and hollow fibers. The activated carbon removes chlorine odors and blue-green odors, and the hollow fibers remove suspended solids. I am trying.

Such a domestic water purifier must have its cartridge compact so that it can be directly attached to a tap. Therefore, the hollow fiber is arranged on the center side and activated carbon is arranged on the outer circumference side.

For example, the hollow fiber is bent into a U-shape in a cylindrical case, and the raw water inlet is formed on the outer peripheral surface of the case, and the raw water inlet is covered so as to cover the case. The activated carbon fiber layer is wound around the outer peripheral surface of the. According to this structure, the raw water first passes through the activated carbon fiber layer in its thickness direction, enters the inside of the case through the inlet, and is filtered through the wall of the hollow fiber.

However, when the activated carbon fiber layer is wound by directly adhering to the outer peripheral surface of the case, raw water easily passes directly through the portion corresponding to the inlet of the activated carbon fiber layer, but the inlet is provided. In the activated carbon fiber layer wound on the outer peripheral side of the non-wound area, the distance to the inlet becomes long, so that it becomes difficult for raw water to pass through. As a result, the raw water becomes unevenly distributed in the portion corresponding to the inlet of the activated carbon fiber layer, which hinders the effective use of the entire surface of the activated carbon fiber layer.

The present invention has been made in view of the above problems, and allows the raw water to evenly permeate and flow through the activated carbon fiber layer wound around the outer peripheral surface of the case. It is an object of the present invention to provide a water purification cartridge in which the activated carbon fiber layer can be effectively used in its entire area.

[0009]

[Means for Solving the Problems]

 According to a first aspect of the invention, a first filter material is arranged in a case having an opening at one end, and a plurality of inflow ports are formed on an outer peripheral surface of the case, and the inflow ports are formed. A second filter material is disposed between the flanges at both ends on the outer peripheral surface of the case, and the case is housed in an outer cylinder having one end opened and the other end closed; A gap between the outer peripheral surface of the outer cylinder and the inner peripheral surface of the outer cylinder serves as a raw water passage, and the raw water introduced from an opening at one end of the outer cylinder is the second filtration on the outer peripheral surface of the case. Permeate through the material, further permeate the first filter material in the case, and be discharged from the opening at one end of the case, and further, the second filter material of the case on the outer peripheral surface of the case. A water purification cartridge characterized in that a means for separating it from the outer peripheral surface is provided. It is about Judge.

According to a second aspect of the invention, hollow fibers are arranged in a U-shaped bent state in a case having an opening at one end, and the open ends of both ends of the hollow fiber face the opening of the case. The case is fixed by an encapsulating material, one end of the case is closed by the encapsulating material, and the case is housed in an outer cylinder whose one end is open and the other end is closed. The gap between the outer cylinder and the inner peripheral surface is a raw water passage, and the activated carbon fiber layer is provided on the outer peripheral surface of the case. Through the activated carbon fiber layer and the raw water introduced into the case through the inflow port is introduced into the case through the activated carbon fiber layer and flows through the wall surface of the hollow fiber. To penetrate into the hollow fibers A means for water purification, characterized in that it is discharged through the open ends of both ends of the hollow fiber, and further, means for separating the activated carbon fiber layer from the outer peripheral surface of the case is provided on the outer peripheral surface of the case. It relates to the cartridge.

According to a third aspect of the invention, hollow fibers are arranged in a U-shaped bent state in a case having an opening at one end, and the open ends of both ends of the hollow fiber face the opening of the case. The case is fixed by an encapsulating material, one end of the case is closed by the encapsulating material, and the case is housed in an outer cylinder whose one end is open and the other end is closed. The gap between the outer cylinder and the inner peripheral surface is a raw water passage, and the activated carbon fiber layer is provided on the outer peripheral surface of the case. Through the activated carbon fiber layer and the raw water introduced into the case through the inflow port is introduced into the case through the activated carbon fiber layer and flows through the wall surface of the hollow fiber. To penetrate into the hollow fibers The hollow fiber is discharged through the open ends of both ends of the hollow fiber, and a coarse non-woven fabric is wound on the outer peripheral surface of the case over the entire length between the flanges at both ends, and the activated carbon fiber layer is formed on the coarse non-woven fabric. The present invention relates to a water purification cartridge characterized by being distributed.

[0012]

[Action]

 According to the first invention, the raw water passes through the second filter material on the outer peripheral surface of the case through the gap between the case and the inner peripheral surface of the outer cylinder, and is formed on the outer peripheral surface of the case. It enters the case through the inflow port, passes through the first filter material in the case, and is discharged from the opening at one end of the case. A means for separating the second filter material from the outer peripheral surface of the case is provided on the outer peripheral surface of the case, and the second filter material is arranged on the separating means. Therefore, a gap is substantially formed between the second filter material and the outer peripheral surface of the case by the above-mentioned separating means, and the second filter material is not limited to the region corresponding to the inflow port. Even in the area between the inlets, the raw water is effectively permeated and filtered.

According to the second invention, the raw water passes through the gap between the case and the inner peripheral surface of the outer cylinder, permeates the activated carbon fiber layer on the outer peripheral surface of the case, and forms on the outer peripheral surface of the case. It enters the case through the inflow port, passes through the wall surface of the hollow fiber inside the case, and is discharged from the opening at one end sealed by the resin of the case through the open ends at both ends of the hollow fiber. Since the activated carbon fiber layer is wound with a gap provided by means for separating it from the outer peripheral surface of the case, the activated carbon fiber layer is not only the region corresponding to the inlet port but also the region between the inlet ports. In this case, the raw water will pass effectively.

According to the third invention, the raw water permeates the activated carbon fiber layer on the outer peripheral surface of the case through the gap between the case and the inner peripheral surface of the outer cylinder to form on the outer peripheral surface of the case. It enters the case through the inflow port, passes through the wall surface of the hollow fiber inside the case, and is discharged from the opening at one end sealed by the resin of the case through the open ends at both ends of the hollow fiber. On the outer peripheral surface of the case, the rough non-woven fabric is wrapped around the entire length between the flanges at both ends, and the activated carbon fiber layer is arranged on the rough non-woven fabric. The rough non-woven fabric substantially forms a gap with the outer circumferential surface of the activated carbon fiber layer, so that the activated carbon fiber layer effectively penetrates the raw water not only in the region corresponding to the inlet port but also in the region between the inlet ports. Then a filtration is performed.

[0015]

【Example】

 1 to 4 show a water purifier using a water purification cartridge according to an embodiment of the present invention. The water purifier includes a frame 10 having a valve chamber. An adapter ring 12 having a connection port 11 is provided at the connection portion of the frame 10 that is connected to the tap for water. The adapter ring 12 is adapted to be tightened by a holding nut 13 as shown in FIG.

A packing 14 is arranged inside the presser nut 13, and the packing 14 is crimped to the tip of the tap of the water supply. A rotary valve 15 is arranged inside the packing 14. The rotary valve 15 includes a support shaft 16 as shown in FIG. 1, and a switching knob 17 is attached to the tip of the support shaft 16.

A discharge port 20 is provided on the outer peripheral side of the rotary valve 15, and a lower passage 21 is formed vertically below the rotary valve 15. The raw water discharge port 22 is provided at the outlet side of the lower passage 21. A shower connection passage 28 is provided on the outer peripheral side of the lower passage 21, and a shower hole 29 is formed in the lower portion of the shower connection passage 28.

The housing of the rotary valve 15 is connected to the discharge pipe 23 shown in FIG. The tip end side of the discharge pipe 23 is connected to the raw water passage 24. The raw water passage 24 is communicated with the annular passage 25, and the annular passage 25 is communicated with the passage hole 26. Further, the passage hole 26 is connected to a connection passage 27 for connecting with the cartridge 30.

The cartridge 30 detachably attached to the upper portion of the frame 10 in FIG. 1 is provided with an outer cylinder 31 whose tip is closed. The case 32 is housed in the outer cylinder 31.

As shown in FIGS. 5 and 6, the case 32 has flanges 33 and 34 at both ends thereof, and an activated carbon fiber layer 35 and a nonwoven fabric 36 are alternately wound around the outer peripheral side of the case 32. (See FIG. 6). The activated carbon fiber layer 35 is made of activated carbon fiber felt. The activated carbon fiber layer 35 is made of carbon fibers obtained by activating a polyacrylonitrile-based, cellulose-based, pitch-based or phenol-based fiber as a raw material by a usual method. Such an activated carbon fiber layer is effective in adsorbing and removing organic substances and bactericide components in raw water, and has a function of adsorbing and removing chlorine and water-bloom in raw water.

A slit-like inlet 40 is formed on the outer peripheral portion of the case 32 of the cartridge 30 as shown in FIGS. 1 and 5. As shown in FIGS. 5 and 7, innumerable hollow fibers 41 are housed in the case 32 in a state of being bent in a U shape, and the ends of these hollow fibers 41 are located in the openings of the case 32. The opening is formed so as to face the portion and is fixed by the encapsulating resin 42. The hollow fiber 41 has an infinite number of fine pores of 0.01 to 0.1 μm formed on its wall surface to remove turbidity components and bacteria in the raw water.

Examples of such hollow fibers include fiber materials made of high-molecular polymers such as cellulose-based, polyolefin-based, polysulfone-based, and polyvinyl alcohol-based polymers.

Moreover, the opening at one end of the case 32 is closed by the sealing resin 42. An O-ring 43 is attached to the outer peripheral side of one end of the case 32 sealed with the resin 42, and the O-ring 43 is used to seal the connection (see FIG. 1).

A purified water discharge passage 44 is provided at the center of the opening 30 side of the cartridge 30 that houses the case 32, as shown in FIG. Such a passage 44 is connected to the purified water discharge pipe 45 when the cartridge 30 is connected to the frame 10 as shown in FIG. A float 46 is housed on the tip side of the purified water discharge pipe 45, and is pressed upward in FIG. 1 by a spring 47. The front end side of the purified water discharge pipe 45 including the float 46 is bent into an L shape as shown in FIG. 3 and constitutes a purified water discharge port 48.

Next, the operation of the water purifier having the above configuration will be described. By connecting the connection port 11 of the frame 10 to the water faucet by the adapter ring 12 and the holding nut 13, the water purifier can be attached to the water faucet. When the switching knob 17 is rotated to the upper position in FIG. 4 in such a state, the raw water from the faucet of the water passage passes through the opening 18, the discharge port 20 and the lower passage 21 of the rotary valve 15 and the raw water discharge port 22. Will be directly discharged from. Therefore, in this case, the tap water is not purified at all and is taken out from the raw water discharge port 22 of the frame 10 as it is.

Next, when the switching knob 17 is rotated to the diagonal position shown by the solid line in FIG. 4, the discharge port 20 of the rotary valve 15 is connected to the shower connection passage 28 outside the lower passage 21. Therefore, the tap water that has entered from the upper portion is discharged downward from the shower hole 29 of this shower unit through the opening 18, the discharge port 20 and the shower connection passage 28 of the rotary valve 15. That is, in this case, the tap water is not purified but is discharged like a shower by the shower unit.

Next, when the switching knob 17 is switched to the horizontal position shown by the chain line in FIG. 4, the opening 18 of the rotary valve 15 is connected to the discharge pipe 23 shown in FIG. Therefore, as shown by the arrow in FIG. 1, the raw water from the tap of the tap water has the outlet 20, the exhaust pipe 23, the raw water passage 24, the annular passage 25, the passage hole 26, and the connection passage 27 of the rotary valve 15. Through the cartridge 30 shown in FIG. 5, and is introduced into a gap between the cartridge 30 and the case 32. After this, the raw water passes through the activated carbon fiber layer 35 wound around the outer peripheral surface of the case 32 in the thickness direction thereof, and is introduced into the case through the inflow port 40 of the case 32.

Since the hollow fiber 41 is arranged in the case 32 in a U-shaped bent state, the raw water introduced into the case 32 passes through the wall surface of the hollow fiber 41 and the inside of the hollow fiber 41 Break into. Then, it is discharged through the openings at both ends of the hollow fiber, which are fixed by the encapsulating resin 42, and is thereby purified.

The purified water thus obtained is discharged through the purified water discharge passage 44, the purified water discharge pipe 45, and the purified water discharge port 48. That is, the purified water purified in the cartridge 30 of this water purifier is obtained through the purified water discharge port 48. Then, the flow rate at this time is visually detected from the position of the float 46 moved against the spring 47.

In the cartridge 30 of the water purifier for purifying tap water in this manner, the inlet 40 of the case 32 is provided in the axial direction of the case 32 and the opening of the case 32 is provided as shown in FIG. The open area has the smallest aperture ratio, and the opposite area has the largest aperture ratio. By changing the aperture ratio in this way, the water flow is sufficiently distributed to the inner part of the case 32.

As described above, the cartridge 30 having the larger opening ratio is used toward the inner side when viewed from the side where water flows in. The inlet 40 has a rectangular shape and a length of 20 mm. Is constant and the width is variable from 1 to 5 mm. The flow rate of this carriage 30 is 2 to 5 l / min, and the thickness of the activated carbon fiber layer 35 wound around the outer periphery of the case 32 between the flanges 33 and 34 is 7 mm.

Moreover, as shown in FIGS. 5 and 7, the cartridge 30 is provided on the outer peripheral surface of the case 32 housed in the outer cylinder 31 and where the inflow port 40 is not formed, as shown in FIGS. Are formed in a grid pattern. The activated carbon fiber layer 35, which is the outer peripheral surface of the case 32 and is wound between the flanges 33 and 34 by such a ridge 55, has a gap between the outer peripheral surface of the case 32.

Due to such a gap, the raw water passes through not only the region corresponding to the portion where the inlet 40 of the activated carbon fiber layer 35 is formed, but also the region corresponding to the portion where the inlet 40 is not formed. Come to do. That is, the flow of raw water can be made more uniform, and the activated carbon fiber layer 35 can be effectively used over the entire area thereof. Therefore, the activated carbon fiber layer 35 can be prevented from being clogged, and the raw water can be stably purified over a longer period of time.

FIG. 8 shows a modified cartridge 30. In this cartridge 30, a coarse net 56 is wound around the outer peripheral surface of a case 32. Even with such a coarse net 56, it is possible to form a gap between the activated carbon fiber layer 35 and the outer peripheral surface of the case 32, and due to such a gap, in the portion where the inflow port 40 is not formed. Also, it becomes possible to uniformly distribute water in the activated carbon fiber layer 35, and it is possible to achieve the same effects as those of the above embodiment.

FIG. 9 shows another modification. In this modification, a coarse non-woven fabric 57 is wound on the outer peripheral surface of the case 32 between the flanges 33 and 34 without directly winding the activated carbon fiber layer 35, and the activated carbon fiber layer 35 is wound thereon. 35 is wound. In this modification, the size of the inflow port 40 on the outer peripheral surface of the case 32 is constant, and the aperture ratio is constant.

Since the rough non-woven fabric 57 has a function of forming a gap between the activated carbon fiber layer 35 and the case 32, such a rough non-woven fabric 57 enables a more uniform fluidization of the water flow. Become. Therefore, also in this modified example, it becomes possible to provide a water purification cartridge which can prevent clogging of the activated carbon fiber layer 35 and can be used stably for a longer period of time.

The present invention has been described above with reference to the illustrated embodiment, but the present invention is not limited to the above embodiment, and various modifications can be made based on the technical idea of the present invention. For example, in the above-mentioned embodiment, the first filter material composed of the hollow fibers 41 is arranged in the case, and the second filter material composed of the activated carbon fiber layer 35 is provided on the outer peripheral surface of the case. However, the present invention can be applied to water purification cartridges having various combinations of filtration materials.

[0038]

[Effect of device]

 According to a first aspect of the invention, a first filter material is arranged in a case having an opening at one end, and a plurality of inlets are formed on the outer peripheral surface of the case, and the inlets are formed. On the outer peripheral surface of the case, a second filter material is arranged between the flanges at both ends, and the case is housed in an outer cylinder whose one end is open and the other end is closed. The gap between the outer surface and the inner peripheral surface of the outer cylinder serves as a raw water passage, and the raw water introduced from the opening at one end of the outer cylinder permeates the second filtration material on the outer peripheral surface of the case, Further, a means for permeating the first filter material in the case, being discharged from an opening at one end of the case, and further providing a means for separating the second filter material from the outer peripheral surface of the case is provided on the outer peripheral surface of the case. It is a scam.

Therefore, according to such a configuration, the space between the second filtration material and the case is substantially provided by the space provided between the second filtration material and the outer peripheral surface of the case. A uniform gap is formed, and even in the area corresponding to the part where the inlet of the case is not provided due to such a gap, the raw water flows in the second filtration material, and the water flow can be evenly distributed. become. Therefore, it is possible to effectively utilize almost the entire area of the second filtration material to perform filtration.

In the second invention, hollow fibers are arranged in a U-shaped bent state in a case having one end open, and both ends of the hollow fiber face the opening of the case. The case is fixed by the encapsulant, one end of the case is closed by the encapsulant, and the case is housed in an outer cylinder whose one end is open and the other end is closed. The gap between the inner peripheral surface of the cylinder and the inner surface is used as a raw water passage, the activated carbon fiber layer is provided on the outer peripheral surface of the case, and the raw water flows through the activated carbon fiber layer in the thickness direction. A plurality of inlets are formed on the outer peripheral surface of the case, and the raw water that passes through the activated carbon fiber layer and is introduced into the case through the inlets passes through the wall surface of the hollow fiber and enters the hollow fiber. Ensure that the hollow fibers are discharged through the open ends at both ends. Also, means for separating the activated carbon fiber layer from the outer peripheral surface of the case is provided on the outer peripheral surface of the case.

Therefore, according to such a structure, a gap is formed between the activated carbon fiber layer and the case, particularly by the separating means provided between the activated carbon fiber layer and the outer peripheral surface of the case, Due to such a gap, the raw water flows into the activated carbon fiber layer in a region corresponding to the portion where the inflow port of the case is not provided, and the water flow can be uniformly distributed. This makes it possible to effectively utilize almost the entire area of the activated carbon fiber layer for filtration.

In a third invention, hollow fibers are arranged in a U-shaped bent state in a case whose one end is an opening, and both ends of the hollow fiber face the opening of the case. The case is fixed by the encapsulating material, one end of the case is closed by the encapsulating material, and the case is housed in an outer cylinder whose one end is open and the other end is closed. The gap between the inner peripheral surface of the cylinder and the inner surface is used as a raw water passage, the activated carbon fiber layer is provided on the outer peripheral surface of the case, and the raw water flows through the activated carbon fiber layer in the thickness direction. A plurality of inflow ports are formed on the outer peripheral surface of the case, and the raw water that has passed through the activated carbon fiber layer and is introduced into the case through the inflow ports passes through the wall surface of the hollow fibers and enters the hollow fibers. Ensure that the hollow fibers are discharged through the open ends at both ends. Also, a rough nonwoven fabric is wound around the outer peripheral surface of the case over the entire length between the flanges at both ends, and the activated carbon fiber layer is arranged on the rough nonwoven fabric.

Therefore, according to such a structure, a gap is substantially formed between the activated carbon fiber layer and the case, particularly by the rough nonwoven fabric provided between the activated carbon fiber layer and the outer peripheral surface of the case. Thus, the raw water flows into the activated carbon fiber layer in a region corresponding to the portion where the inlet of the case is not provided by such a gap, and the water flow can be uniformly distributed. This makes it possible to effectively utilize almost the entire area of the activated carbon fiber layer for filtration.

[Submission date] March 25, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

Next, when the switching knob 17 is switched to the horizontal position shown by the chain line in FIG. 4, the opening 18 of the rotary valve 15 is connected to the discharge pipe 23 shown in FIG. Therefore, the raw water from the tap is shown in FIG. 1 by the arrow, the opening 18 of the rotary valve 15, the discharge pipe 23, the raw water passage 24, the annular passage 25, the passage hole 26, and the connection passage 27. Through the cartridge 30 shown in FIG. 5, and is introduced into a gap between the cartridge 30 and the case 32. After this, the raw water passes through the activated carbon fiber layer 35 wound around the outer peripheral surface of the case 32 in the thickness direction thereof, and is introduced into the case through the inflow port 40 of the case 32.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the overall structure of a water purifier.

FIG. 2 is a vertical sectional view showing the overall structure of the water purifier.

FIG. 3 is a vertical sectional view showing a portion of a water purifier discharge port.

FIG. 4 is a side view showing the appearance of the case.

FIG. 5 is a sectional view of a cartridge.

FIG. 6 is an external perspective view of a case in which activated carbon fiber layers and non-woven fabric are alternately wound.

FIG. 7 is an external perspective view of a case.

FIG. 8 is an external perspective view of a case of a modified example.

FIG. 9 is a vertical cross-sectional view showing a case of a modified example.

[Explanation of symbols]

 10 Frame 11 Connection Port 12 Adapter Ring 13 Holding Nut 14 Packing 15 Rotary Valve 16 Spindle 17 Switching Knob 18 Opening 20 Discharge Port 21 Lower Passage 22 Raw Water Discharge Port 23 Discharge Pipe 24 Raw Water Passage 25 Annular Passage 26 Passage Hole 27 Connection Passage 28 Shower Connection Passage 29 Shower Hole 30 Cartridge 31 Outer Cylinder 32 Case 33, 34 Flange 35 Activated Carbon Fiber Layer 36 Nonwoven Fabric 40 Inlet 41 Hollow Fiber 42 Encapsulating Resin 43 O-ring 44 Clean Water Discharge Passage 45 Clean Water Discharge Pipe 46 Float 47 Spring 48 Purified water outlet 55 Ridge 56 Coarse net 57 Coarse non-woven fabric

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 25, 1994

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Toyohiko Takatsuki, Inventor, 1-20-5 Tenma, Kita-ku, Osaka City, Osaka Prefecture Mahobin Co., Ltd. (72) Masahiro Yoshida 1-20, Tenma, Kita-ku, Osaka, Osaka Prefecture No. 5 inside Zojirushi Mahobin Co.

Claims (3)

[Scope of utility model registration request] 1. A first case in a case having an opening at one end.
And a plurality of inlets are formed on the outer peripheral surface of the case, and a second filter is provided between the flanges on both ends of the outer peripheral surface of the case where the inlets are formed. A filter material is arranged, the case is housed in an outer cylinder having one end opened and the other end closed, and a gap between the outer peripheral surface of the case and the inner peripheral surface of the outer cylinder is provided. Raw water is used as a raw water passage, and the raw water introduced from the opening at one end of the outer cylinder permeates the second filtration material on the outer peripheral surface of the case and further permeates the first filtration material in the case. And a means for separating the second filter material from the outer peripheral surface of the case on the outer peripheral surface of the case, the water purifying cartridge being discharged from the opening at one end of the case. . 2. An encapsulating material in which a hollow fiber is arranged in a U-shaped bent state in a case having an opening at one end, and open ends of both ends of the hollow fiber face the opening of the case. And the case is closed at one end by the encapsulant, the case is housed in an outer cylinder having one end opened and the other end closed, and the case is on the outer peripheral side of the case. The gap between the inner peripheral surface of the cylinder is a raw water passage, an activated carbon fiber layer is provided on the outer peripheral surface of the case,
Raw water flows through the activated carbon fiber layer so as to permeate through the activated carbon fiber layer, and a plurality of inlets are formed on the outer peripheral surface of the case. The raw water permeates the activated carbon fiber layer and passes through the inlet into the case. The raw water introduced into the hollow fiber passes through the wall surface of the hollow fiber, enters the hollow fiber, and is discharged through the open ends of the hollow fiber, and the activated carbon fiber is provided on the outer peripheral surface of the case. A cartridge for water purification, characterized in that means for separating the layer from the outer peripheral surface of the case is provided. 3. An encapsulating material in which a hollow fiber is arranged in a U-shaped bent state in a case having an opening at one end, and the open ends of both ends of the hollow fiber face the opening of the case. And the case is closed at one end by the encapsulant, the case is housed in an outer cylinder having one end opened and the other end closed, and the case is on the outer peripheral side of the case. The gap between the inner peripheral surface of the cylinder is a raw water passage, an activated carbon fiber layer is provided on the outer peripheral surface of the case,
Raw water flows through the activated carbon fiber layer so as to permeate through the activated carbon fiber layer, and a plurality of inlets are formed on the outer peripheral surface of the case. The raw water permeates the activated carbon fiber layer and passes through the inlet into the case. The raw water introduced into the hollow fiber passes through the wall surface of the hollow fiber, enters the hollow fiber, and is discharged through the open ends of the hollow fiber. A water purification cartridge characterized in that a rough nonwoven fabric is wound around the entire length between the flanges, and the activated carbon fiber layer is arranged on the rough nonwoven fabric.