JPH11165166A - Filter cartridge of water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a through pass water channel when a block-shaped molded filter material of a relatively simple structure is used and to try to materialize the performance of the filter material effectively. SOLUTION: In a filter cartridge 8, a front cap 56 and a rear cap 57 are bonded with an adhesive to both ends of a block-shaped molded filter material 55 having a column-shaped hollow central part. A cylindrical pipe 56b located on the same central shaft with the central part of the filter material 55 is installed in the front cap 56, two stage cross guide ribs 57b, 57c positioned on the same shaft with the hollow part of the filter material 55 are installed in the rear cap 57, and the cross guide rib 57b of the rear cap 57 are inserted into the cylindrical pipe inner wall of the front cap 56.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtration cartridge for a water purifier.

[0002]

2. Description of the Related Art In recent years, interest in drinking water has increased, and water purifiers for purifying tap water and the like have become remarkably popular at homes and offices. In particular, a direct-connection type water purifier used by directly connecting to a faucet or the like has been widely used because it is small, lightweight, and can be easily attached and used. This direct-connection type water purifier can switch the state of water to be discharged by switching the switching device as if twisting the faucet of a faucet. It is possible to easily switch between spouting water and purifying water.

[0003] A conventional direct connection type water purifier will be described below with reference to the drawings. FIG. 6 is an external perspective view of a conventional water purifier,
7 is a longitudinal sectional view of the conventional water purifier shown in FIG. 6, and FIG.
1 shows respective cross-sectional views of the conventional water purifier shown in FIG.

In FIGS. 6, 7 and 8, reference numeral 1 denotes a faucet,
9 is a joint pipe for connecting the water tap 1 to the water purifier, and 2 is a fixing nut. Reference numeral 6 denotes a lower case of the water purifier, 7 denotes an upper case of the water purifier, and 8 denotes a filtration cartridge for purifying raw water flowing from the water tap 1. Reference numeral 4 denotes a discharge port cap for performing straight discharge and shower discharge of raw water. The discharge port cap 4 is provided with a straight discharge port 27 and a shower discharge port 30. Reference numeral 5 denotes a straight water discharge section. Reference numeral 3 denotes an operation lever for switching a series of discharges such as straight discharge of raw water, shower discharge, and purified water discharge, and a water stop state. When the operating lever 3 is at the position where straight water discharge and shower discharge of raw water are performed, water flows from arrow A to F. When it is at the position where clean water discharge is performed, water flows from arrow A to arrow F, and water is discharged. When it is in the position to perform, it flows from arrow A to B, C, D, and E.

Next, details of the inside of the water purifier will be described with reference to FIGS. 7 and 8, reference numeral 40 denotes a switching case. The switching case 40 includes three water supply ports 40b, a straight water inlet 16 and a shower inlet 17 which will be described later, and a cylindrical cavity wall 40a provided around an inlet to the connecting pipe 15 which will be described later. It is inserted in. 41a is a projection cam formed on the rotary valve rod 41, 4
1b is a channel groove formed on the outer periphery of the rotary valve rod 41, and the projection cam 41a is provided in the channel groove 41b. Reference numeral 13 denotes an O-ring made of synthetic rubber that separates each water channel 41b. Reference numeral 42 denotes a filter plate for removing dust and the like from raw water flowing through the joint pipe 9, reference numeral 42a denotes a number of filter holes formed in the filter plate 42, reference numeral 43 denotes a valve stem with cross ribs, and reference numeral 44 denotes a D-ring. In the case of three modes of straight, shower and purified water, three valve rods 43 with cruciform ribs are provided, and a support shaft is formed at the upper end thereof, each of which is inserted into one of the filter holes 42a. The rib and the lower end are inserted into the water supply port 40b. That is, these filter holes 42a
Has a function of guiding the support shaft in addition to the original action of removing dust and the like. When the valve rod 43 with the cross-shaped rib is moved upward, the D-ring 44 releases the water supply port 40b and the cross rib and the water supply port 4 are opened.
0b, water can be passed through.
4 closes the water supply port 40b. Reference numeral 15 denotes a connecting pipe which allows water to flow through the filtration cartridge 8 when the operation lever 3 selects discharge of purified water, and constitutes a part of a purified water passage. Reference numeral 45 denotes a compression spring that urges the valve rod 43 with a cross-shaped rib toward the water supply port 40b.

The valve stem 43 with a cruciform rib is arranged at a position aligned with the water channel groove 41b of the rotary valve stem 41, and the projection cam 41a rotates the operation lever 3 to rotate the valve stem 4 with a cruciform rib.
When one of the three is pushed up, the water supply port 40b is released.
Since the projection cam 41a is provided in the water channel groove 41b of the rotary valve stem 41 with a set angle being changed, the pivot cam can separately push up the valve stem 43 with a cross rib. Here, if the set angles are the same, two or more valve rods 43 with cross ribs can be pushed up at the same time. Further, the channel groove 41b is configured such that one of the left is communicated with the connection pipe 15, and the other two of the middle and right are the straight water inlet 16 for the raw water.
And at the position of the shower inlet 17.
For this reason, when the valve rod 43 with the cross-shaped rib is rotated by the operation lever 3, one of the water supply ports 40b is released by pushing up the projection cam 41a, and the connection pipe 15 is further moved through any of the water channel grooves 41b. , The straight water inlet 16 and the shower inlet 17.

Reference numeral 47 denotes a changeover switch for water purification, and reference numeral 46 denotes a shower port for discharging purified water. A port for performing straight discharge (not shown) is provided in front of the shower port 46 in the purified water discharge section 5. The water purification switch 47 is switched by the rotary valve rod 41, and the shower port 46 and the straight port are appropriately switched. The connection pipe 15 is connected to the inside of the filtration cartridge 8, passes through the felt 50 and the activated carbon layer 19 which are sandwiched between the cartridge case 48, the top partition 49, and the bottom partition 51, and further passes through the hollow fiber membrane 21.
Then, the water is guided to a water purification switch 47 in the water purification passage, and is discharged from the shower port 46 or the straight port. Inlet 1 for straight by switching the switch
6. Raw water selectively passed through the shower inlet 17 is separately discharged from one of the straight water outlet 27 and the shower water outlet 30 provided on the lower surface of the switching case 40. Reference numeral 27 denotes a circular straight discharge port provided on the discharge port cap 4, and reference numeral 30 denotes a ring-shaped shower discharge port similarly provided on the discharge port cap 4. The straight discharge port 27 is formed from a cylindrical portion 28 erected concentrically at the center of the discharge port cap 4, and is fitted to the straight inlet 16. This fitting forms a straight channel.

Next, the operation in the case of using this direct connection type conventional water purifier will be described. First, when it is desired to discharge the raw water straight, the operating lever 3 is rotated to lift the central cross-ribbed valve stem 43 of the three cross-ribbed stems 43 with the projection cam 41a. At this time, the other two cross-ribbed valve stems 43 remain closed. As a result, the raw water flowing from the faucet 1 is
Through the center water supply port 40b, while being guided by the cross-shaped ribs of the cross-ribbed valve stem 43, the rotary valve stem 41
The fluid is discharged from the straight discharge port 27 of the discharge port cap 4 through the straight inlet 16 of the switching case 40 through the water channel groove 41b on the outer periphery of the switch case 40.

When it is desired to discharge the raw water in the shower, the operating lever 3 is rotated so that the right one of the three cross-ribbed valve rods 43 is brought into contact with the projection cam 41.
Lift with a. At this time, the other two cross-ribbed valve stems 43 remain closed by the compression springs 45.
The raw water flowing from the tap 1 enters the right water supply port 40b through the joint pipe 9 and is guided by the cruciform ribs of the valve rod 43 with cruciform ribs, while the rightmost water channel groove of the rotary valve rod 41 is guided. The liquid enters the shower water chamber 31 through the shower inlet 17 on the lower surface of the switching case 40 via 41 d, and is discharged from the shower hole 23 of the shower discharge port 30.

Next, when it is desired to discharge purified water, the leftmost one of the three cross-ribbed valve stems 43 is lifted by the projection cam 41a. At this time, the other two cross-ribbed valve stems 43 remain closed by the compression spring 45. The raw water flowing from the tap 1 enters the left water supply port 40b through the joint pipe 9, and is guided by the cross-shaped rib to the connecting pipe 15 through the leftmost water channel groove 41b of the rotary valve rod 41. The water is exhaled, purified in the filtration cartridge 8, and the water purification switch 47.
After that, the water is discharged from the shower port 46 or the straight port selected by the operation lever 3 in the purified water discharge section 5.

[0011]

In the above-mentioned conventional water purifier, as a method for enclosing the filter medium in the filtration cartridge 8, a granular material sandwiched between a top partition plate 49, a bottom partition plate 51 and a felt 50 in a cartridge case 48 is used. Activated carbon 1
By compressing 9, the through-pass of raw water was prevented, but when using a block-shaped forming media,
When the conventional compression encapsulation method is used, a gap is formed in the cartridge case 48 and the partition plate, and a through-pass waterway is formed. As a result, the filtration performance of the formed filter material cannot be effectively brought out.

The present invention solves the above-mentioned conventional problems. When a block-shaped formed filter medium is used with a relatively simple structure, a through-pass water channel can be prevented, and the filter medium performance can be effectively brought out. An object of the present invention is to provide a filtration cartridge for a water purifier.

[0013]

In order to achieve the above object, a filtration cartridge for a water purifier according to the present invention comprises a column-shaped block-shaped filter medium having a hollow center and an adhesive at both ends of the filter medium. A front cap and a rear cap that are adhered and sealed by the above.The front cap is provided with a cylindrical tube located on the same central axis as the hollow portion of the forming filter medium and orthogonal to the circular bonding surface, and the rear cap is formed by molding. A two-stage cross guide rib is provided on the same central axis as the hollow portion of the filter medium and orthogonal to the circular bonding surface, and the cross guide rib of the rear cap is fitted into the inner wall of the front cap cylindrical tube. The cross guide rib of the rear cap hits the part to regulate the height direction.

According to this configuration, it is possible to provide a cartridge which prevents a through-pass water channel and effectively brings out the performance of the filter medium.

[0015]

DETAILED DESCRIPTION OF THE INVENTION The invention according to claim 1 is a block-shaped filter medium having a columnar shape and a hollow center portion, a front cap and a rear cap for sealing both ends of the filter medium with an adhesive. The front cap is provided with a cylindrical tube which is located on the same central axis as the hollow part of the forming filter medium and is orthogonal to the circular bonding surface, and the rear cap is located on the same central axis as the hollow part of the forming filter medium. A two-stage cross guide rib perpendicular to the circular bonding surface is provided, and the rear cap cross guide rib is fitted into the inner tube inner wall of the front cap, and the rear guide cross guide rib hits the end of the front cap cylindrical tube. The direction is now regulated.

According to this structure, the adhesive is formed of, for example, a hot melt of a thermoplastic resin, and the front cap and the rear cap are formed of a polypropylene material or a polyethylene material compatible with the hot melt adhesive. Accordingly, the adhesive has a uniform thickness, is sealed with a stable adhesive force, and can prevent formation of a through-pass water channel.

According to a second aspect of the present invention, a plurality of guide ribs are provided on the outer wall of the cylindrical tube of the front cap, and guide the hollow wall of the formed filter medium together with the cross guide ribs of the rear cap.

With this configuration, the front cap, the rear cap, and the forming filter medium can be concentrically regulated, and a uniform bonding area can be secured evenly when the adhesive is applied.

According to a third aspect of the present invention, a plurality of annular ribs are provided on the inner surface of the bonded portion between the front cap and the rear cap, and the annular rib has R at its tip and root, and the width and height of the annular rib are The ratio is 1: 1. Regarding the arrangement, the width of the rib and the width of the groove are arranged at a ratio of 1: 1 to 1.5.

With this configuration, a large bonding area is ensured,
Air mixing during bonding is reduced, the flowability of the adhesive is improved, and the adhesive strength is improved.

According to a fourth aspect of the present invention, the cartridge is positioned orthogonal to the purified water spout, the raw water straight spout, and the raw water shower spout.

According to this configuration, it does not get in the way during the kitchen operation. Hereinafter, a filtration cartridge and a water purifier using the same according to an embodiment of the present invention will be described in detail with reference to the drawings. 1 is an external perspective view of a water purifier according to an embodiment of the present invention, FIG. 2A is a longitudinal sectional view of the water purifier, and FIG.
Is a top view of a discharge port cap of the water purifier, and FIG. 3 is a cross-sectional view of the water purifier. In the embodiments described below, members corresponding to members of the water purifier and the filtration cartridge described in the conventional example are denoted by the same reference numerals.

In FIG. 1, 1 is a tap, 2 is a fixing nut, 3 is an operation lever, 4 is a discharge port cap, 5 is a purified water discharge section, 6 is a lower case of a water purifier, 7 is an upper case, 48
Is a cartridge case that covers the filtration cartridge. The discharge port cap 4 may be formed integrally with the lower case 6. 9 is a joint pipe. When the operating lever 3 is at the position where straight water and shower discharge of raw water are performed, water flows from the arrow A to F, and when it is at the position where clean water is discharged, arrows A to B, C, D and E are displayed. Flows.

Next, the details of the inside of the filtration cartridge and the water purifier using the same will be described. FIG. 2 (a), (b)
, 40 is a switching case, 40a is a cylindrical cavity wall, 40
b denotes three water supply ports, 41 denotes a rotary valve stem, 41a denotes a projection cam, and 41b denotes a water channel groove. 13 is an O-ring, 42 is a filter plate, 42a is a number of filter holes, 43
Is a valve stem with cross ribs, and 44 is a D-ring. Also one
5 is a connecting pipe, 45 is a compression spring. 16 is an inlet for raw water straight, and 17 is an inlet for shower.
33 is a water purification channel, and 53 is a throttle.

Reference numeral 8 denotes a filtration cartridge provided in a detachable cartridge case 48.
Raw water is led through the connecting pipe 15 which forms a part of the third pipe 3. The connecting portion 15 to which the filtration cartridge 8 can be removably attached is provided in the connecting pipe 15 constituting a part of the water purification channel 33. 55 is a filtration cartridge 8
Both ends of which are sealed by an adhesive 58 with a front cap 56 and a rear cap 57. The raw water flows in from the outer peripheral wall of the formed filter medium 55 of the filtration cartridge 8 and passes through the inside, where impurities and residual chlorine are removed, flows out from the inner peripheral wall of the formed filter medium 55, and flows out of the cylindrical tube 56b of the front cap 56. The water is guided backward by the outer wall, returned from the end of the cylindrical tube 56b back to the inner wall of the cylindrical tube 56b, becomes purified water, and is discharged from the purified water discharge unit 5 through the flow rate checker 22 provided in the purified water passage 33. You. The flow rate checker 22 includes a pressure receiving body 22a that receives the discharge pressure of the purified water discharged from the filtration cartridge 8, a spring that biases the pressure receiving body against the pressure, and the like.
If the filtration cartridge 8 is clogged and its performance is reduced, it can be notified to the outside.

In FIG. 2B, reference numeral 23 denotes a number of shower holes provided in the discharge cap 4, reference numerals 24 and 25 denote partition ribs formed in two rows on the outer peripheral side of the number of the shower holes 23, and reference numeral 26 denotes a distribution ring. It is. The partition ribs 24 and 25 function as rectifying ribs together with the distribution ring 26. As a result, the jet flow from the shower holes 23 arranged on the outer periphery can be strengthened, and the entire jet state through the shower holes 23 can be made uniform. 2
Reference numeral 7 denotes a circular straight discharge port, and reference numeral 28 denotes a cylindrical portion forming the straight discharge port 27. As described above, the cylindrical portion is erected from the straight inlet 16 of the switching case 40, and if the cylindrical portion 28 is inserted and fitted, the straight channel is constituted by the two cylindrical portions. Become. Reference numeral 29 denotes a dispersing surface portion comprising a fan-shaped flat portion provided between the distribution ring 26 and the cylindrical portion 28, at a position facing the shower inlet 17 formed in the switching case 40 and on the side of the shower outlet 30. From the shower water chamber. In addition, the raw water that is in close proximity to the shower inlet 17 directly hits this, and disperses the flow to other parts. Since the dispersion surface portion 29 is located at a high position, the flow wraps around any of the shower holes 23 without creating a large circulation flow on the switching case 40 side, and the partition ribs 24,
The liquid is discharged uniformly by being guided by the nozzle 25.

Next, the filtration cartridge which is a main part of the present invention will be described. 4A is a longitudinal sectional view of a filtration cartridge according to an embodiment of the present invention, FIG. 4B is a longitudinal sectional view of a front cap of the filtration cartridge, FIG.
(C) is a top view of the bonding surface of the front cap of the filtration cartridge, FIG. 4 (d) is a longitudinal sectional view of the rear cap of the filtration cartridge, and FIG. 4 (e) is the bonding surface of the front cap of the filtration cartridge. FIG. 5 is a top view, and FIG. 5 shows a flow chart of water inside the filtration cartridge.

In FIG. 4, reference numeral 8 denotes a filtration cartridge, which includes a formed filter medium 55, a front cap 56, a rear cap 57,
The adhesive 58 and the O-ring 13 are formed. In the filtration cartridge 8, a front cap 56 and a rear cap 57 are sealed at both ends of a cylindrical filter material 55 having a hollow cylindrical shape at the center with an adhesive 58. The adhesive 58 is a hot melt of a thermoplastic resin, and is used for sealing the end face of the molding filter material 55 and the front cap 56 and the rear cap 57.

The front cap 56 is made of the hot melt adhesive 5
8 made of a polypropylene material or a polyethylene material which is compatible with adhesion to
a, which is provided with a cylindrical tube 56b which is orthogonal to and concentric with each other, and which is open at both ends, has an enclosing rib 56c at the outer edge of the bonding surface 56a, and has a cylindrical tube 5
6b is connected to the flow rate checker 22 at the end,
A ring 13 is provided.

As shown in FIGS. 4B and 4C, a plurality of guide ribs 56d are formed on the outer wall of the cylindrical tube 56b.
5, the adhesive surface 56a and the formed filter medium 55 are guided.
Are provided concentrically to improve the adhesiveness of the adhesive 58. The bonding surface 56a is shown in FIG.
As shown in (b) and (c), a plurality of annular ribs 56e are provided, R is provided at the tip and the root thereof, and the width and the height are set to a ratio of 1: 1. The groove width is arranged at a ratio of 1: 1 to 1.5, so that a large bonding area is ensured, the mixing of air at the time of bonding is reduced, the flowability of the adhesive is improved, and the bonding property is improved. improves.

As shown in FIGS. 4B and 4C, the surrounding ribs 56c are formed of ribs higher than the plurality of annular ribs 56e, and prevent the adhesive 58 from leaking and protruding from the outer peripheral surface. The rear cap 57 is made of a polypropylene material or a polyethylene material compatible with the hot melt adhesive 58, has a circular bonding surface 57a, and has a two-stage structure that is orthogonal to the same and has the same central axis. Cross guide ribs 57b and 57c are provided, and an enclosing rib 57c is provided on the outer edge of the bonding surface 57a.

The cross guide rib 57b is provided as shown in FIG.
As shown in (e), the front cap 56 and the rear cap 5 are fitted into the inner wall of the cylindrical tube 56b of the front cap 56.
7 are provided on the same central axis to improve the adhesiveness of the adhesive 58.

The cross guide rib 57c is formed as shown in FIG.
As shown in (e), the hollow portion wall of the forming filter medium 55 is guided, and the center surface of the bonding surface 57a and the forming filter medium 55 are concentrically regulated. And the height of the rear cap 57 is regulated, so that the thickness of the adhesive becomes uniform,
It is provided to maintain stable adhesiveness.

The bonding surface 57a is provided with a plurality of annular ribs 57d as shown in FIGS. 4 (d) and 4 (e), and has R at its tip and root, and its width and height are 1: 1. And the ratio of
In this arrangement, the rib width and the groove width are arranged in a ratio of 1: 1 to 1.5, so that a large bonding area is ensured, the mixing of air during bonding is reduced, and the flowability of the adhesive is good. And the adhesiveness is improved.

As shown in FIGS. 4D and 4E, the surrounding rib 57e is formed of a rib higher than the plurality of annular ribs 57d, and prevents the adhesive 58 from leaking and protruding from the outer peripheral surface. Since the filtration cartridge 8 is located in a state orthogonal to the purified water discharge section 5, the raw water straight discharge port 27, and the raw water shower discharge port 30, it does not become a hindrance during kitchen work.

Referring to FIG. 5, the flow of water inside the filtration cartridge will be described. Tap water raw water flows from a throttle 53 attached to the water purification channel 33, and tap water raw water flows from the outer peripheral wall of the formed filter medium 55. Flows through the inside of the forming filter medium 55, where impurities and substances such as residual chlorine are removed, and purified water flows out from the inner peripheral wall of the forming filter medium 55, and the front cap 56
The water is guided backward by the outer wall of the cylindrical tube 56b, and the purified water flows into the inner wall side of the cylindrical tube 56b through a gap between the cross guide ribs 57c of the rear cap 57 fitted into the inner wall of the cylindrical tube 56b of the front cap 56. Water is discharged from the purified water discharge unit 5 through a flow rate checker provided in the passage 18. The flow of water becomes B, C, D, and E from the arrow A.

As described above, according to the filtration cartridge of the embodiment of the present invention, it is possible to prevent the raw water from coming into contact with the formed filter medium and prevent a through-pass water channel from being discharged without being filtered as it is. It can be a filtration cartridge that is drawn out.

Next, the operation when this water purifier is used will be described. Since this is the same as that described in the conventional example, a detailed description regarding this is omitted. When it is desired to discharge the raw water straight, the operation lever 3 is rotated to lift the valve rod 43 with the central cross-shaped rib with the projection cam 41a,
The liquid is discharged from the straight discharge port 27 through the water channel 41b on the outer periphery of the rotary valve rod 41 and the straight flow path. When the raw water is to be discharged in the shower, the operation lever 3 is rotated to lift the right cross-ribbed valve rod 43 with the projection cam 41a, and the rightmost water channel groove 41b, the shower inlet 17,
The water is discharged from the shower hole 23 of the shower discharge port 30 through the shower water chamber 31. To further discharge purified water, the valve rod 43 with the leftmost cross-shaped rib should be
1a, the leftmost channel groove 41 of the rotary valve stem 41
b, connecting pipe 15, formed filter medium 5 in filtration cartridge 8
2, the flow rate is checked by the flow rate checker 22, and then water is discharged from the purified water discharge section 5.

As described above, the water purifier according to the embodiment of the present invention includes a water switch for selectively connecting supplied raw water to one of a straight flow path, a shower water chamber, and a water purification path;
Since it is a water purifier equipped with a purified water discharge unit that discharges purified water from the filtration cartridge 8 attached to the water purification channel, it is easy to discharge raw water as it is, to use it as a shower, or to use purified water with a water switch. Can be switched,
The water purifier can be made compact.

[0040]

As described above, the filtration cartridge according to the present invention prevents a through-pass water channel in which the raw water is discharged without being filtered without being filtered, without the raw water coming into contact with the formed filter medium.
It is possible to effectively bring out the performance of the filter medium.

The water purifier of the present invention is small and lightweight and can be directly connected to a faucet.
It is possible to easily switch between shower and filtered water.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a water purifier according to an embodiment of the present invention.

FIG. 2A is a longitudinal sectional view of a water purifier according to one embodiment of the present invention. FIG. 2B is a top view of a discharge port cap of the water purifier according to one embodiment of the present invention.

FIG. 3 is a cross-sectional view of the water purifier according to the embodiment of the present invention.

FIG. 4A is a longitudinal sectional view of a filtration cartridge according to an embodiment of the present invention. FIG. 4B is a longitudinal sectional view of a front cap of the filtration cartridge according to an embodiment of the present invention. (D) Longitudinal sectional view of the rear cap of the filtration cartridge according to one embodiment of the present invention. (E) The vertical cross-sectional view of the rear cap of the filtration cartridge according to one embodiment of the present invention. Top view of bonding surface

FIG. 5 is a flow chart of water inside a filtration cartridge according to an embodiment of the present invention.

FIG. 6 is an external perspective view of a conventional water purifier.

FIG. 7 is a longitudinal sectional view of a conventional water purifier.

FIG. 8 is a cross-sectional view of a conventional water purifier.

[Explanation of symbols]

 Reference Signs List 1 tap water tap 2 fixing nut 3 operation lever 4 discharge port cap 5 purified water discharge section 6 lower case 7 upper case 8 filtration cartridge 9 coupling pipe 13 O-ring 15 connecting pipe 16 straight inlet 17 shower inlet 19 activated carbon layer 20 mounting Part 21 Hollow fiber membrane 22 Flow rate checker 22a Pressure receiver 23 Shower hole 24 Partition rib 25 Partition rib 26 Distribution ring 27 Straight discharge port 28 Cylindrical part 29 Dispersion surface part 30 Shower discharge port 33 Water purification channel 40 Switching case 40a Cylindrical cavity wall 40b Water supply port 41 Rotating valve stem 41a Projection cam 41b Waterway groove 42 Filter plate 42a Filter hole 43 Cross-ribbed valve stem 44 D-ring 45 Compression spring 46 Shower port 47 Water purification switch 48 Cartridge case 49 Top panel 50 Fell G 51 Bottom partition plate 53 Aperture 55 Forming filter medium 56 Front cap 56a Adhesive surface 56b Cylindrical tube 56c Encircling rib 56e Annular rib 57 Rear cap 57a Adhesive surface 57b Cross guide rib 57c Cross guide rib 57d Annular rib 57e Enclosing rib 58 Adhesive

Claims (4)

[Claims] 1. A molded filter medium having a columnar shape and a hollow center portion having a hollow portion, and a front cap and a rear cap for sealing both ends of the molded filter medium by bonding both ends thereof with an adhesive. A cylindrical tube is provided on the same central axis as the hollow portion of the filter medium and is orthogonal to the circular adhesive surface. The rear cap is provided with a two-stage cylinder located on the same central axis as the hollow portion of the forming filter medium and orthogonal to the circular adhesive surface. A cross guide rib is provided, and the cross guide rib of the rear cap is fitted into the inner wall of the cylindrical tube of the front cap, and the cross guide rib of the rear cap hits the end of the cylindrical tube of the front cap to regulate the height direction. Filtration cartridge for water purifier. 2. The water purifier according to claim 1, wherein a plurality of guide ribs are provided on the outer wall of the cylindrical tube of the front cap, and guide the hollow wall of the formed filter together with the cross guide ribs of the rear cap. Filtration cartridge. 3. A plurality of annular ribs are provided on the inner surface of the bonded portion of the front cap and the rear cap, and the annular rib has a radius at its tip and root, and the width and height of the annular rib are in a ratio of 1: 1. Regarding the arrangement, the width of the rib and the width of the groove are 1: 1 to 1
2. The arrangement according to claim 1, wherein the arrangement is at a ratio of 1.5.
Or the filtration cartridge of the water purifier according to 2. 4. The filtration cartridge for a water purifier according to claim 1, wherein the cartridge is positioned orthogonal to the purified water spout, the raw water straight spout, and the raw water shower spout.