JPH0668758U - Adsorption and filtration module - Google Patents

Abstract

(57) [Summary] [Structure] Cylindrical adsorbent compact 1 containing adsorbent fibers, collar 2 for covering the cut end of the cylindrical compact, filter cloth 3 for covering the inner surface of the cylindrical compact, and cylindrical compact The adsorbent module comprises a filter cloth 4 covering the outer surface of the body, and at least part of the collar 2 and the filter cloths 3 and 4 are adhered to cover the adsorbent molded body 1. Furthermore, it is a filterable module using a molded article having high filterability instead of the cylindrical adsorbent molded article containing the adsorptive fiber. [Effect] The adsorbent or filterable module of the present invention has excellent adsorbent or filterability, and there is no risk of fine particles of the adsorbent or filter material leaking out, and good dimensional stability and mechanical properties,
It is mainly suitable for mounting in a small space inside the equipment. It can be used not only for adsorption and filtration of impurities in water but also for purification of other liquids, air and other gases.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a module having an adsorptive property or a filter property, and more specifically, it is mainly used by being incorporated in a device and used for cleaning water or for adsorbing or filtering gas.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, a module having many structures has been disclosed as a module to be used by incorporating it into a device or the like for the purpose of purifying water or deodorizing. Granular activated carbon is most often used as the water purifier or deodorant. Activated carbon has extremely high water purifying and deodorizing properties, but since it is usually used as granular carbon with a certain size, activated carbon is especially suitable for a module that is installed inside a small space. In order to completely prevent leakage of fine particles caused by abrasion, it was structurally difficult to cover with a sheet having filterability to maintain high dimensional stability.

Also, when using a filter medium made of fibers containing particles having a function such as adsorptivity, it is possible to cover with a thin sheet to maintain high dimensional stability and completely prevent leakage of fine particles. It was difficult to make such a structure.

[0004]

[Problems to be solved by the device]

 A module for use in a small space such as the inside of a device, where a small cylindrical molded product with adsorptive or filterability can be covered with a thin filter cloth to completely prevent the adsorbent or filter material from leaking. It is intended to provide a module which is a module, has a simple structure, and has high adsorbability or filterability which is highly economical.

[0005]

Means for Solving the Problems The present inventors have completely prevented leakage of adsorbent or filter material particles by efficiently covering a small cylindrical molded body having high adsorbability or filterability with a thin filter cloth. As a result of various studies on the structure of the module that can be made, a thin sheet collar is inserted into the cut part of the cylindrical molded body with no or very few joint irregularities, and a thin filter cloth is pre-formed inside the molded body. Shaped and inserted so that there is almost no gap, and after winding a similar thin filter cloth on the outside of the molded body so that there is almost no gap, it is sealed, and then the filter cloth that covers the collar and the inside and outside By partially fusing, the module with high shape dimensional accuracy and complete prevention of leakage of fine particles of the adsorbent or filter material contained in the internal compact can be efficiently produced. It was found to be able to. Furthermore, as a result of studying the material of the molded body having high adsorptivity or filterability, the present invention was reached.

That is, a cylindrical adsorbent molded body 1 containing adsorptive fibers, a collar 2 covering a cut end of the cylindrical molded body, a filter cloth 3 covering an inner surface of the cylindrical molded body, and an outer surface of the cylindrical molded body. The adsorbent module is characterized in that it comprises a filter cloth 4 for covering the adsorbent molding 1 and at least a part of the collar 2 and the filter crosses 3 and 4 are adhered to the adsorbent molded body 1. Furthermore, it is a filterable module in which a molded article having high filterability is used instead of the cylindrical adsorbent molded article containing the adsorptive fiber.

The present invention will be described in detail below.

The cylindrical adsorbent molded body of the adsorbent module of the present invention needs to contain fibers having adsorbability. Examples of the adsorbent fiber include activated carbon fiber or an adsorbent obtained by molding powder of powder such as Zeolite, silica gel, activated alumina into a fibrous form with a binder. Of these, activated carbon fibers, which have high adsorptivity and can be easily formed into fine fibers, are most preferable.

Activated carbon fibers are obtained by carbonizing synthetic fibers, natural fibers or semi-synthetic fibers in an inert gas, and then activating them at a high temperature in an atmosphere containing steam or carbon dioxide gas. Among these, activated carbon fibers obtained from phenol resin fibers are most preferable because they have a large specific surface area and a high uniformity of pore size.

Further, as the activated carbon particles to be used by enveloping inside the fiber structure, any of activated carbon obtained from wood, coal, pitch of petroleum, or the like can be used. Among these, activated carbon obtained from coconut shell is more preferable because it has a dense and hard structure, and it is difficult to generate fine powder due to abrasion, and a large specific surface area can be obtained.

Activated carbon fibers are usually formed by adding a binder. Activated carbon fibers need to be formed with care because they are brittle and easily broken.For example, staples of activated carbon fibers should be dispersed in water containing a binder and then formed, dried, and fused in the same manner as papermaking. Is obtained by

Furthermore, the present invention also includes a module including a molded body made of a material having high filterability. The molded body made of a material having a high filterability is not particularly limited, and examples thereof include a woven fabric made of various fibers such as synthetic fibers and natural fibers, a knitted fabric, a nonwoven fabric, a filter medium made of paper, or a composite filter medium thereof.

In the present invention, since it is mainly used as a member of a device, it has a function of completely preventing leakage of fine particles of an adsorbent or a filter medium, and is required to have high dimensional accuracy. Therefore, it is more preferable that the small-sized cylindrical molded body having high adsorptivity or filterability has no seam or has no unevenness of the seam or has a form having very few seams.

Next, the collar used in the present invention was pre-press-molded into a shape shown as 2 in FIG. 3 in order to cover the cut edge of the cylindrical molded body so as to cover the cut edge. A method of attaching the sheet by fitting it into the cut edge is preferable. The material is not particularly limited as long as it is a thin sheet, but the composition is not particularly limited, but it is a material that has a heat fusion property because it is often a fusion method when it is bonded to the filter cloth that covers the inside and outside of the cylindrical molded body. It is preferable. In practice, it is preferable to use a sheet of the same quality as the filter cloth that covers the inside and outside of the molded body.

Further, as shown in FIG. 4, the collar of the present module may be attached to a cylindrical molded body by attaching a filter cloth covering the inner side and the outer side thereof, and then covering the cut end of the cylindrical shape.

In order to coat the inside and outside of the cylindrical molded body, it is necessary to use a filter cloth in the present invention. The material of the filter cloth is not particularly limited as long as it has a filterability, and a wide range of sheet-like materials can be used. For example, woven fabrics, knitted fabrics, non-woven fabrics and other papers are also included, and composites of these are also used. I can. Of these, non-woven fabrics are preferred from the viewpoints of filterability and processability, and the composition thereof is polypropylene fiber, polyethylene fiber, polyester fiber or polypropylene fiber / polyethylene fiber mixture, polypropylene fiber / polyester fiber mixture non-woven fabric. Is preferred.

When the inner side and the outer side of the cylindrical molded body are coated with these filter cloths, in order to improve the dimensional accuracy as a module, it is necessary to coat the surface of the cylindrical molded body as closely as possible so that no gap is formed. There is. Therefore, for example, the filter cloth is made into a cylindrical shape that matches the inner diameter of the molded body in advance and inserted so that it closely adheres to the inner surface of the molded body. Attach the overlapped part to the outer surface of the molded product by gluing it.

Next, in the present invention, a collar covering a cut end of a cylindrical molded body having a high adsorptive property or a filterability and two filter cloths covering an inner side and an outer side of the cylindrical molded body. At least one part must be glued to each other. The bonding method is not particularly limited, but it is preferable to bond the overlapping portions of these sheets to each other at several points by fusion.

If these sheets are attached in close contact with the surface of the molded body, it is possible to completely prevent the leakage of fine particles of the adsorbent or the filter medium inside by spot bonding at several places. During this point fusion, the portion was also heat-fusion-bonded with the heat-fusible component of the internal adsorbent or the filter medium, for example, the binder contained in the adsorbent or the heat-meltable fiber contained in the filter medium. The state is more preferable. If the cylindrical molded body, the collar, and the two filter cloths that have high adsorptivity or filterability, which constitute the present invention, are bonded together into one piece, dimensional accuracy and other mechanical properties are further improved. Is more preferable because it is performed.

Since the adsorbent or filterable module of the present invention has no risk of fine particles of the adsorbent or filter medium leaking out and has excellent dimensional accuracy and mechanical properties, it is used by mounting it in a small space inside the equipment. Suitable for. It can be used not only for adsorption and filtration of impurities in water, but also for purification of other liquids, air and other gases.

[0021]

【Example】

 Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

(Embodiment 1) FIG. 1 shows one mode of an adsorptive module of the present invention. (A) is a front view and (b) is a plan view. 2 is a sectional view taken along the line AA 'in FIG. 1 (b). Further, FIG. 3 is a three-dimensional assembly drawing of the adsorptive module shown in FIG.

The cylindrical adsorbent molded body 1 is an activated carbon fiber (produced by Kuraray Chemical Co., Ltd.) having a specific surface area of about 1,500 m ² / g obtained by carbonizing and activating phenol resin fiber and an average pore radius of about 12 Å. Cractive FR-15 ”) is molded into a cylindrical shape using a thermoplastic resin as a binder, so it has a seamless cylindrical shape. The activated carbon fiber obtained by carbonizing and activating the phenol resin fiber has a larger specific surface area than the activated carbon fiber obtained from other raw materials, has a high pore size uniformity, and has excellent adsorptivity.

The collar 2 is formed by press-molding a non-woven fabric made of thin polypropylene fiber and punching it out, and has a shape as shown by 2 in FIG. The collar 2 is fitted into the cut end of the cylindrical adsorbent molded body 1. At this time, in order to improve the dimensional accuracy and mechanical properties of the module, it is necessary to mount it so that there is no gap between the collar and the adsorbent molded body.

The color 2 is not limited to a material having a filterability, and a material having no water or gas permeability can be used.

The filter cloth 3 is a non-woven fabric made of the same thin polypropylene fiber as the collar 2 and has a very low filtration resistance. The filter cloth 3 is formed into a cylindrical shape which matches the inner diameter of the cylindrical adsorbent molded body 1 in advance, and is inserted so that no gap is formed between the filter cloth 3 and the inner surface of the molded body 1. The reason why it is necessary to adhere the filter cloth to the inner surface of the molded body is the same as in the case of the color described above.

The filter cloth 3 includes not only nonwoven fabric made of polypropylene fiber but also polyethylene fiber, polyester fiber or polypropylene fiber / polyethylene fiber mixture nonwoven fabric, polypropylene fiber / polyester fiber mixture nonwoven fabric, or other woven fabrics, knitted fabrics and other nonwoven fabrics. Or a composite of these.

The filter cloth 4 is also a non-woven fabric made of the same thin polypropylene fiber as the color 2 and the filter cloth 3, and the filter cloth previously cut into a rectangular shape so as to match the outer surface of the cylindrical adsorbent molded body 1 is adhered thereto. Wrap and heat the overlapping parts of the cloth in a line to attach them.

Further, the color 2 and the filter cloth 3 and the color 2 and the filter cloth 4 are spot-fused at several positions shown by 6 in the figure to form the cylindrical adsorbent molded body 1 with a thin polypropylene fiber nonwoven fabric. To cover. At this time, at the heat-sealing point 6, not only the two polypropylene fiber nonwoven fabrics are melt-bonded but also the thermoplastic resin contained as a binder in the adsorbent molded body is heat-bonded, so that the module size is increased. Precision and mechanical strength are also improved. Further, since the color and the filter cloth are in close contact with the surface of the adsorbent molded body so that no gap is formed, the spot fusion of the adsorbent in several places completely prevents the leakage of the adsorbent fine particles.

In the case of such a structure, it is possible to completely prevent the leakage of fine particles inside by adhering several points in a dotted manner. However, if necessary, the particles are fused continuously to form a polypropylene fiber nonwoven fabric bag. You may make it the structure enclosed inside.

The adsorptive module of this embodiment is used for water purification in a water purifier or a refrigerator.

(Embodiment 2) FIG. 4 is a sectional view showing another embodiment of the adsorptive module of the present invention.

The cylindrical molded body 5 having filterability is a molded body having a high filterability, which is formed by molding polyester fiber into a cylindrical shape using a thermoplastic resin as a binder. Moreover, since the polyester fiber is directly molded into a cylindrical shape, there are no irregularities in the joints. The collar 2 is a non-woven fabric made of a mixture of thin polypropylene fibers and polyethylene fibers, and has a very low filtration resistance.

The filter cloths 3 and 4 are also non-woven fabrics made of a mixture of the same thin polypropylene fibers and polyethylene fibers as the collar 2, and when the filter cloths 3 and 4 are attached to the cylindrical non-woven fabric molded body 5, after the filter cloths 3 and 4 are attached first, The collar 2 is fitted into the cut end of the molded body. Therefore, when the collar 2 is attached, the inner surface and the outer surface of the cylindrical molded body are fitted into the cut ends of the molded body 5 to which the filter cloth is already attached. Other than that, the processing method of the components and the structure and function after assembly are almost the same as those of the molded body of the first embodiment.

[0035]

[Effect of device]

 The adsorptive or filterable module of the present invention has excellent adsorptive or filterability, there is no risk of fine particles of the adsorbent or filter material leaking out, and dimensional stability and mechanical properties are good, and it is mainly used by mounting it in a small space inside the equipment. Suitable to do. It can be used not only for adsorption and filtration of impurities in water, but also for purification of other liquids, air and other gases.

[Brief description of drawings]

1A and 1B show an embodiment of an adsorbent module of the present invention, in which FIG. 1A is a front view and FIG. 1B is a plan view.

FIG. 2 is a sectional view taken along the line AA ′ in FIG. 1 (b).

3 is a three-dimensional assembly diagram of the adsorptive module shown in FIG. 1. FIG.

FIG. 4 is a sectional view showing an embodiment of the adsorptive module of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical adsorbent molded body 2 Color 3 Filter cloth covering the inner surface of the molded body 4 Filter cloth covering the outer surface of the molded body 5 Cylindrical non-woven fabric molded body 6 Heat fusion bonding place

Claims (2)

[Scope of utility model registration request] 1. A cylindrical adsorbent compact 1 containing adsorbent fibers, a collar 2 for covering a cut end of the cylindrical compact, a filter cloth 3 for covering an inner surface of the cylindrical compact and an outer surface of the cylindrical compact. An adsorbent module comprising a filter cloth (4) for covering, and at least a part of the collar (2) and the filter cloth (3, 4) being adhered to cover the adsorbent molded body (1). 2. A cylindrical molded body 5 having filterability, a collar 2 covering a cut end of the cylindrical molded body, a filter cloth 3 covering an inner surface of the cylindrical molded body, and a filter covering an outer surface of the cylindrical molded body. A filterable module comprising a cloth 4, wherein at least a part of the collar 2 and the filter cloths 3 and 4 are adhered to cover the nonwoven fabric molded body 5.