JP2000288314A - Water purifying filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the production efficiency by enabling even an unskilled worker to attach a filter material and a plate body in a short time to be performed without generating irregularity in quality. SOLUTION: In the water purifying filter, a connection rod 15 is integrally connected to the central part of a first plate body 8 and a cylindrical member 17 having an externally threaded part 16 formed to the outer peripheral surface thereof is integrally connected to the leading end of the connection rod 15. The internally threaded part 18 threaded with the externally threaded part 16 is formed to the inner peripheral surface of the cylindrical part 13 of a second plate member 9 and the connection rod 15 is inserted in a porous core 6 to connect the second plate body 9 by screw parts 18, 19. By this constitution, the porous core 6 and a cylindrical filter material 7 made of activated carbon fibers are held by a pair of the first and second plate bodies 8, 9 opposed to each other in the cylinder axis direction thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a donut-shaped sleeve-shaped filter medium having a cross section having a flow path through which water to be treated can be formed at a position corresponding to a cylindrical shaft center. The present invention relates to a water purification filter in which a communication path is provided between one side of a plate and a communication passage connected to a flow path on one side of the plate.

[0002]

2. Description of the Related Art When a sleeve-type filter material as described above is sandwiched between plate members, conventionally, for example, a deoxime-type silicon RTV rubber is provided on each end surface of the cylindrical filter material at both ends in the axial direction of the cylinder axis. An adhesive such as an adhesive (KE45: manufactured by Shin-Etsu Chemical Co., Ltd.) was applied, and the plate was bonded to the filter.

[0003]

However, in the case of the conventional example using the above-described adhesive, the coating tends to cause unevenness. For example, if the coating amount is large, the coating will protrude from the periphery and the appearance will be poor. When the amount is small, there is a defect that the quality is reduced and the quality is apt to vary in any case, such as insufficient bonding strength. As a result, in order to stabilize the quality, the application work requires skill,
There is a disadvantage that the production efficiency is reduced and the cost is high.

In addition, since the time required for the adhesive to solidify after application is long, the filter medium and the plate must be pressed for a long period of time, and furthermore, the solidification reaction must be completely completed. Need more time. For this reason, there are drawbacks that it takes days before the product is shipped, a storage time and a large storage space are indispensable, it is not suitable for mass production by continuous operation, and it is expensive.

Further, in the case of an adhesive composed of a volatile organic solvent, a volatile component is adsorbed on a filter medium at the production stage, so that pores are clogged, and the surface area in contact with the water to be treated is reduced. However, there is a drawback that the adsorption function is hindered and the filter function deteriorates due to early deterioration.

[0006] The present invention has been made in view of such circumstances, and the invention according to claims 1 and 2 does not cause a variation in quality, even for an unskilled worker. Moreover, it is an object of the present invention to improve the production efficiency by enabling the filter medium and the plate to be attached in a short time. An object of the present invention is to make it possible to improve the sealing performance of the device.

[0007]

The invention according to claim 1 is
In order to achieve the above-mentioned object, a donut-shaped sleeve-shaped filter medium having a cross section formed with a flow path through which water to be treated can be formed at a position corresponding to the cylindrical shaft core is provided in a pair of tubes facing each other in the cylindrical shaft core direction. A water purification filter sandwiched by a plate body, and provided on one side of the plate body with a communication passage communicating with the flow path,
The plate bodies are connected to each other via a connecting rod, and the connecting rod and at least one of the two plate bodies are connected by screw joint.

According to a second aspect of the present invention, in order to achieve the above-mentioned object, a donut-shaped sleeve having a cross-sectional shape in which a flow path through which water to be treated can flow is formed at a position corresponding to a cylindrical shaft core. A water purification filter in which a filter medium is sandwiched between a pair of plate bodies facing each other in the axial direction of the cylinder, and a communication path connected to the flow path is provided on one side of the plate body, and the plate bodies are connected to each other. It is characterized in that it is connected via a rod, and the connection rod and at least one of the two plate bodies are connected by fitting.

According to a third aspect of the present invention, there is provided a water purification filter according to the first or second aspect of the present invention, wherein the end face and the face of the sleeve-type filter material are provided. A circular rib centered on the cylindrical axis of the filter medium is integrally provided on the contacting plate surface so as to partially penetrate into the filter medium.

Examples of the above-mentioned sleeve-type filter material include activated carbon fiber wet molded articles having a core material made of plastic or the like fitted thereon, and activated carbon fiber felt wound around the core material. What is applicable (claim 4). As the activated carbon fibers, various activated carbon fibers such as pitch-based, rayon-based, polyacrylonitrile (PAN) -based, cellulose-based, and phenol-based can be used.
Also, a reverse osmosis membrane wrapped around a core material so that it can be used as a pretreatment filter for coarse particles, such as a thread-like fiber wound many times around a core material, or an ionic form can be filtered. Further, a porous ceramic molded body or the like can be applied, and further, a material filled with granular activated carbon so that particles of submicron order can be filtered can be applied.

[0011]

According to the structure of the water purification filter of the present invention according to the first aspect, at least one of the two plate bodies and the connecting rod are connected by screw connection in a state where the sleeve-shaped filter medium is sandwiched between the pair of plate bodies. A filter can be manufactured.

Further, according to the structure of the water purification filter of the present invention, at least one of the two plates and the connecting rod are fitted with the pair of plates sandwiching the sleeve-type filter medium. And a filter can be manufactured.

According to the third aspect of the present invention, the circular rib provided on the plate partially penetrates into the sleeve-type filter medium, and the contact between the sleeve-type filter medium and the plate body occurs. The area can be enlarged.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall longitudinal sectional view of a water purifier incorporating a water purifying filter according to a first embodiment of the present invention, and FIG. 2 is a transverse sectional view of FIG. 2 are provided to constitute a water purifier.

The casing 1 has an inlet 3 for the water to be treated.
Is screwed into the second casing 1b having the outlet 4 for purified water that has passed through the water purification filter 2 while being sealed via the first O-ring 5. The water purification filter 2 can be appropriately replaced by the attachment and detachment.

The water purification filter 2 has a cylindrical porous core 6 provided with a flow path R through which water can pass in the center thereof. Material 7 is externally fitted, and the porous core 6 and the filter material 7
Is sandwiched between a pair of circular first and second plate bodies 8 and 9 from both ends in the cylinder axis direction. Activated carbon fiber molded products obtained by wet molding activated carbon fibers can also be used as the above-mentioned sleeve type filter material. As the porous core 6, a material obtained by winding and hardening a nonwoven fabric, a material obtained by sintering beads, or a material obtained by winding a nonwoven fabric around a plastic cylindrical net is used.

Positioning ribs 10 project in a cross shape on the inner peripheral surface of the inlet 3 of the first casing 1a, and the outer peripheral surface of the first plate 8 is provided at the tip of each positioning rib 10. The projection 11 which abuts and positions is integrally connected.

On the other hand, a portion connected to the outlet 4 of the second casing 1b is formed in the concave portion 12, and the second plate 9
And a cylindrical portion 13 having a communication passage R1 having a central portion connected to the flow path R.
Are integrally connected, and the cylindrical portion 13 is rotatably fitted into the concave portion 12 in a state of being sealed via the second O-ring 5a. In the drawing, reference numeral 14 denotes a support rib that comes into contact with the second plate 9.

As shown in the exploded perspective view of the water purification filter of the first embodiment in FIG. 3, a connecting rod 15 is integrally connected to the center of the first plate 8. A cylindrical member 17 having an external thread 16 formed on the outer peripheral surface is integrally connected to the distal end of the connecting rod 15.

On the inner peripheral surface of the cylindrical portion 13 of the second plate 9, an inner screw portion 18 is formed, which is screwed to the outer screw portion 16. The first and second plate members 8 and 9 are joined by screwing the two plate members 9 together.
Thereby, the porous core 6 and the filter medium 7 are sandwiched. In this joined state, the inside of the cylindrical member 17 is substantially a communication path R1.

Each of the first and second plate members 8 and 9 has its center on the cylindrical axis of the filter medium 7 so that it can partially bite into the filter medium 7 on the plate surface in surface contact with the end surface of the filter medium 7. Three ribs 19 are provided integrally, and leakage of the water to be treated from the surface contact portion between the end face of the filter medium 7 and the first and second plates 8 and 9 can be favorably prevented. It is configured as follows.

With the above structure, the water to be treated flowing from the inlet 3 flows between the first casing 1a, the first plate 8 and the positioning ribs 10, flows from the outer peripheral surface of the filter medium 7 to the center, and is filtered. The treated water is taken out from the outlet 4 through the communication path R1 from the flow path R.

FIG. 4 shows a second embodiment of the water purification filter according to the present invention.
FIG. 5 is an overall longitudinal sectional view showing the embodiment, FIG. 5 is a transverse sectional view of the second embodiment, and FIG. 6 is an exploded perspective view. The differences from the first embodiment are as follows.

That is, the connecting rods 21 are integrally connected to the first plate body 8 at four circumferential positions, and the distal ends of the connecting rods 21 are integrally connected by the cylindrical body 22.
An inner thread portion 23 is formed on the inner peripheral surface of the cylindrical body 22.

On the outer peripheral surface of the second plate 9,
An outer thread portion 24 to be screwed to the third core member 3 is formed, and an annular convex portion 25 is provided on each of the first and second plate members 8 and 9 so as to be fitted and positioned in the porous core 6. .

Each of the first and second plate members 8 and 9 has its center on the cylindrical axis of the filter medium 7 so that it can partially penetrate into the filter medium 7 on the plate surface in surface contact with the end surface of the filter medium 7. The four ribs 19a having a circular shape are integrally provided, and leakage of the water to be treated from the surface contact portion between the end face of the filter medium 7 and the first and second plate bodies 8 and 9 can be satisfactorily prevented. It is configured as follows.

According to the above configuration, the porous core 6 and the filter medium 7 are fitted into the connecting rod 21 and the cylindrical body 22, and one end of the porous core 6 is fitted to the annular convex portion 25, and the second plate is formed. The body 9 is rotated to screw the outer screw portion 24 into the inner screw portion 23, and the filter member 7 is sandwiched between the first and second plate members 8 and 9 by the screw connection, whereby the water purification filter 2 can be manufactured. The other configuration is the same as that of the first embodiment, and the description thereof will be omitted by retaining the same reference numerals.

In the first and second embodiments, the connecting rods 15, 21 are integrally connected to the first plate 8, but in the present invention, the connecting rods 15, 21 are connected to the first plate 8, It may be configured so as to be screw-connected to.

FIG. 7 shows a third embodiment of the water purification filter according to the present invention.
An example is shown, and the difference from the first example is as follows. That is, as shown in a perspective view of a main part of FIG. 7A, a fitting member 32 having fitting projections 31 projecting from four directions is integrally connected to the distal end of the connecting rod 15.

Although only the second plate 9 is shown in FIG.
As shown in a cross-sectional view of a main part of FIG. 7C, filtration is performed on a plate surface in surface contact with the end surface of each of the filter media 7 of each of the first and second plate bodies 8 and 9 in a fitting state described later. A circular 4 around the cylindrical axis of the filter medium 7 so that it can partially bite into the medium 7
The ribs 19b are integrally provided, and are configured so that leakage of the water to be treated from the surface contact portion between the end face of the filter medium 7 and the first and second plates 8, 9 can be favorably prevented. I have.

Thus, as shown in the side view of FIG. 7B and the cross-sectional view of the main part of FIG. 7C, the connecting rod 15 and the fitting member 32 are inserted through the porous core 6. And
The cylindrical portion 33 of the second plate 9 is forcibly fitted to the fitting member 32, and the locking portion 31 a at the tip of the fitting projection 31 is locked to the end surface of the cylindrical portion 33. 9 is connected to the connecting rod 15 by fitting, and the first and second plates 8 and 9 are provided with a filter medium 7.
Is configured to be held. The other configuration is the same as that of the first embodiment, and the description thereof will be omitted by retaining the same reference numerals.

In the third embodiment, the connecting rod 15 is integrally connected to the first plate 8. However, in the present invention, the connecting rod 15 is connected to the first plate 8 by fitting. May be configured.

[0034]

As is apparent from the above description, according to the water purification filter of the first aspect of the present invention, at least one of the two plates is connected with the pair of plates sandwiching the sleeve-type filter medium. Since the filter is manufactured by connecting the rod with the screw, the conventional adhesive and adhesive application work is not required, and even for unskilled workers, the filter material can be used without any variation in quality. And the plate body can be easily assembled. Moreover, in the assembly, it is not necessary to take time to dry and solidify the adhesive as in the past, and it is not necessary to secure a storage space during the solidification, so that the filter medium and the plate are assembled in a short time. As a result, production efficiency can be improved and mass production can be performed satisfactorily.

According to the water purification filter of the present invention, at least one of the two plate members and the connecting rod are connected by fitting in a state where the sleeve-shaped filter medium is sandwiched by the pair of plate members. Since the filter is manufactured, the conventional adhesive and adhesive application work is no longer required,
Even an unskilled worker can easily assemble the filter medium and the plate without causing variation in quality. Moreover, in the assembly, it is not necessary to take time to dry and solidify the adhesive as in the past, and it is not necessary to secure a storage space during the solidification, so that the filter medium and the plate are assembled in a short time. As a result, production efficiency can be improved and mass production can be performed satisfactorily.

Further, according to the water purification filter of the third aspect of the present invention, the circular rib provided on the plate is partially cut into the filter, so that the contact area between the filter and the plate is increased. Thus, the leakage of the water to be treated from the contact point can be satisfactorily avoided, the sealing performance can be improved, and the filter function can be improved.

[Brief description of the drawings]

FIG. 1 is an overall vertical sectional view of a water purifier incorporating a water purification filter of a first embodiment according to the present invention.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is an exploded perspective view of the water purification filter of the first embodiment.

FIG. 4 is an overall vertical sectional view showing a second embodiment of the water purification filter according to the present invention.

FIG. 5 is a cross-sectional view of the second embodiment.

FIG. 6 is an exploded perspective view of the second embodiment.

FIG. 7 is a view showing a third embodiment of the water purification filter according to the present invention, wherein FIG. 7 (a) is a perspective view of a main part, FIG. 7 (b) is a side view, and FIG. 7 (c). Is a sectional view of a main part.

[Explanation of symbols]

 7 ... Filter 8 ... First plate 9 ... Second plate 15,21 ... Connecting rod 16,24 ... Outer thread 18,23 ... Inner thread 19 ... Rib 31 ... Protrusion for fitting 32 ... Fit Member R: Flow path R1: Communication path

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B01D 29/10 510G 530A 29/14 C

Claims (4)

[Claims] 1. A donut-shaped sleeve-shaped filter material having a cross section formed with a flow path through which water to be treated can be formed at a position corresponding to a cylindrical shaft core is sandwiched between a pair of plate members facing each other in the cylindrical shaft core direction. A water purification filter provided on one side of the plate body with a communication passage communicating with the flow path, wherein the plate bodies are connected to each other via a connection rod, and at least one of the connection rod and both plate bodies is provided. And a water purification filter characterized by being connected by screw connection. 2. A donut-shaped sleeve-shaped filter material having a cross section formed with a flow path through which water to be treated can flow at a position corresponding to the cylindrical shaft core is sandwiched between a pair of plate members facing each other in the cylindrical shaft core direction. A water purification filter provided on one side of the plate body with a communication passage communicating with the flow path, wherein the plate bodies are connected to each other via a connection rod, and at least one of the connection rod and both plate bodies is provided. And a water purification filter characterized by being connected by fitting. 3. The filter material tube according to claim 1 or 2, wherein the filter material tube is capable of partially penetrating into the filter material on a plate surface in surface contact with an end surface of the sleeve-type filter material. A water purification filter with a circular rib centered on the axis. 4. A water purification filter wherein the sleeve-type filter medium according to claim 1, 2 or 3, is made of activated carbon fiber.