KR20070069285A - Complex filter for water purifier - Google Patents

Abstract

A composite filter for water purification which simultaneously performs an adsorption function of various contaminants contained in water and a removal function of particles, improves bearing capacity of activated carbon or activated carbon fibers, and can easily confirm the exchange time thereof is provided. A composite filter for water purification comprises: a hollow core(20) installed in an inner part of the filter; a cylindrical first filter(30) which is closely adhered onto an outer surface of the core, and is formed from activated carbon(32) or activated carbon fibers; and a cylindrical second filter(40) which is closely adhered to an outer surface of the first filter, and is formed from non-woven fabric. The first filter is manufactured by forming activated carbon or activated carbon fibers into a cylindrical shape, and covering a cylindrical outer surface of the cylindrical shape with non-woven fabric(34).

Description

Complex Filter for Water Purification

1 is a cross-sectional view showing a conventional first filter.

2 is a cross-sectional view showing a filter provided with a conventional core.

3 is a perspective view showing an embodiment of a composite filter for water purification according to the present invention.

4 is a cross-sectional view showing an embodiment of a composite filter for water purification according to the present invention.

5 is a cross-sectional view showing a state in which the filter cap is mounted in one embodiment of the composite filter for water purification according to the present invention.

6 is an exploded perspective view showing another embodiment of the composite filter for water purification according to the present invention.

7 is an assembled cross-sectional view showing another embodiment of the composite filter for water purification according to the present invention.

The present invention relates to a composite filter for water purification and a method for manufacturing the same. More particularly, the second filter formed of a nonwoven fabric is disposed outside the first filter formed of activated carbon or activated carbon fiber, and thus, the adsorption function of the pollutant and the particle The present invention relates to a composite filter for water purification and a method of manufacturing the same, which simultaneously satisfy the removal function and have improved bearing capacity such as activated carbon or activated carbon fiber, and which can easily check the exchange time.

Generally, water is divided into drinking water, agricultural water, and industrial water according to its use, and ground water or river water is purified according to various uses. In particular, drinking water is produced and supplied through a multi-stage water purification process, such as filtration and sterilization of river water and groundwater.

Recently, due to the rapid expansion of industrial scale and the concentration of large cities, the problem of environmental pollution has been greatly increased. Accordingly, the pollution of water quality has deteriorated, and it is necessary to go through the water purification process in order to use drinking water. Increasingly, the use of water purifiers is increasing.

In the case of water purification using a water purifier as described above, a filter is essentially used, mainly a micro filter (nonwoven fabric filter), activated carbon filter, activated carbon fiber (ACF) filter, hollow fiber membrane filter, ion exchange resin filter, reverse Osmosis filters are used a lot.

In the conventional activated carbon filter, as shown in FIG. 1, an activated carbon (4) is filled in the inside of the cylinder (2), and a filter cap (6) in which a raw water inlet (7) is formed on one side of the cylinder (2). This is assembled, and the filter cap 8 in which the water purification outlet 9 is formed in the other side of the cylinder 2 is assembled.

The activated carbon filter is a raw water is introduced through the raw water inlet (7), the filter is made while passing between the particles of the activated carbon (4) filled inside, the purified water is discharged to the outside through the purified water outlet (9) .

In the conventional activated carbon filter configured as described above, since the inflow area of the raw water is formed narrowly, the water passing efficiency is lowered so that the activated carbon 4 of the small particles cannot be used, and thus there is a limit in improving the water purification efficiency.

In addition, since most water purifiers are made of water to pass through water in four to five stages, the internal structure is complicated and bulky. In addition, since various types of filter cartridges must be provided, there is a problem in that the filter is frequently replaced and the maintenance cost increases.

In addition, as shown in FIG. 2, Korean Patent No. 341240 has an inner nonwoven fabric layer 13 formed outside of the hollow core 12 made of polypropylene (PP) or the like, and interposed with an outer nonwoven fabric layer 15. A solid component layer 14 formed of activated carbon or the like is formed in one side, and a filter cap 16 having no hole is provided at one side, and a filter cap 18 having a filter cap 18 at which a water purification outlet 19 is formed at the other side. It is open.

The filter of the Patent No. 341240 has a filter action as the raw water flows from the circumferential surface toward the center, and the purified water is discharged through the water purification outlet 19.

The filter as described above is purified by passing through the outer nonwoven fabric layer 15, the solid component layer 14, and the inner nonwoven fabric layer 13, and thus has a large raw water absorption area, and in the case of using activated carbon having a small particle size, There is an advantage that the efficiency is sufficiently obtained.

However, in the filter, since the solid layer 14 is made of powdered (or granular) activated carbon, the adsorption function of various contaminants present in water is excellent, but there is a problem in that the removal of particles is limited.

An object of the present invention is to solve the above problems, the first filter is formed of activated carbon and / or activated carbon fibers to perform the adsorption function of the various contaminants contained in the water and the function of removing particles at the same time It is to provide a composite filter for water purification provided with a second filter formed of a nonwoven fabric outside.

Another object of the present invention is to provide a second filter formed of a nonwoven fabric on the outside of the first filter formed of activated carbon and / or activated carbon fibers, so that the supporting capacity of activated carbon or activated carbon fibers, etc. is improved, and the exchange time is easy. It is to provide a composite filter for water purification that can be easily identified.

The composite filter for water purification proposed by the present invention includes a hollow core installed inside, a cylindrical first filter installed in close contact with the outer surface of the core and formed of activated carbon and / or activated carbon fibers, and the first filter. It is installed in close contact with the outer surface of the non-woven fabric comprising a cylindrical second filter.

The core may be formed in a cylindrical or pipe shape using a resin such as polypropylene (PP) or polyethylene (PE), and may be used by laminating a polyolefin nonwoven fabric, a polyester nonwoven fabric, a polyamide nonwoven fabric, or the like. Alternatively, it may be used in the form of a pipe.

The second filter is formed using a polyolefin nonwoven fabric, a polyester nonwoven fabric, a polyamide nonwoven fabric, or the like.

The first filter is formed by forming activated carbon and / or activated carbon fibers in a cylindrical shape, and wrapping the outer and / or inner surfaces of the cylindrical activated carbon and / or activated carbon fibers with a nonwoven fabric.

Next, a preferred embodiment of the composite filter for water purification according to the present invention will be described in detail with reference to the drawings.

First, one embodiment of the composite filter for water purification according to the present invention, as shown in Figure 3 and 4, the hollow core 20 is installed inside, and is installed in close contact with the outer surface of the core 20 activated carbon ( It comprises a cylindrical first filter 30 formed of 32 and the cylindrical second filter 40 is installed in close contact with the outer surface of the first filter 30 and formed of a nonwoven fabric.

The core 20 is formed by laminating a polyolefin nonwoven fabric, a polyester nonwoven fabric, a polyamide nonwoven fabric, or the like into a cylindrical or pipe shape.

For example, the core 20 is formed by winding a nonwoven fabric formed in a thin sheet shape into a cylindrical shape and then fusion bonding integrally by applying heat. When the density of the tissue is adjusted according to the degree of compression using a jig or a mold in the process of integrally fusion by applying heat as described above, the filtration efficiency of the core 20 (for example, 1 μm, 3 μm) , 5 μm, etc.) can be kept constant.

In addition, the core 20 may be formed by winding in a cylindrical shape in a state in which a sheet made of a polyolefin nonwoven fabric and a sheet made of a polyester nonwoven fabric are overlapped with each other and fused together by applying heat.

As described above, when the core 20 is formed into a cylindrical shape using a polyolefin nonwoven fabric, a polyester nonwoven fabric, a polyamide nonwoven fabric, or the like, as shown in FIG. 4, activated carbon constituting the first filter 30 is illustrated. It is also possible not to use a nonwoven fabric on the inner surface (the surface where the activated carbon 32 and the core 20 contact each other) of (32). In this case, since the outer surface of the core 20 covers the inner surface side of the activated carbon 32 as a whole, there is no need to use a separate nonwoven fabric double.

As shown in FIG. 4, the outer surface and both side surfaces of the first filter 30 except for the inner surface of the first filter 30 are wrapped around the activated carbon 32 using the nonwoven fabric 34 so that the shape of the activated carbon 32 is more reliably maintained. desirable.

In addition, the core 20 may be formed by using a resin such as polypropylene (PP) or polyethylene (PE) in a cylindrical or pipe shape.

For example, the core 20 may be used by forming fine particles or fibers (microfibers) of polypropylene (PP) in a cylindrical shape in a melt blown method.

Even when the core 20 is formed in a cylindrical shape in a meltblown manner as described above, as shown in FIG. 4, a nonwoven fabric is not used on the inner surface side of the activated carbon 32 constituting the first filter 30. Can be. Even in this case, since the outer surface of the core 20 covers the inner surface side of the activated carbon 32 as a whole, there is no need to use a separate nonwoven fabric double.

In the case where the core 20 is formed of a resin such as polypropylene (PP), polyethylene (PE), or the like, as shown in FIG. 6, a cylindrical shape is formed by injection molding or the like so that a plurality of holes 23 are formed. It is also possible to form

In this case, water passing through the core 20 is smoothly made through the hole 23.

When the plurality of holes 23 are formed in the core 20 as described above, as shown in FIGS. 6 and 7, the nonwoven fabric 36 is formed on the inner surface of the activated carbon 32 constituting the first filter 30. It is desirable to install. In this case, the inner surface of the activated carbon 32 is not entirely wrapped around the core 20, and the activated carbon 32 is exposed to water through the plurality of holes 23, and thus, the nonwoven fabric between the activated carbon 32 and the core 20. It is more advantageous to provide the shape 36 of the activated carbon 32.

The second filter 40 is formed by laminating a polyolefin nonwoven fabric, a polyester nonwoven fabric, a polyamide nonwoven fabric, or the like.

The second filter 40 is formed by winding a nonwoven fabric formed in a thin sheet shape into a cylindrical shape and then applying heat to fuse it integrally. In addition, when the density of the tissue is adjusted according to the degree of compression using a jig or a mold in the process of integrally fusion while applying heat, the filtration efficiency of the second filter 40 (for example, 1 μm, 3 Micrometer, 5 micrometer, etc.) can be kept constant.

The second filter 40 may be formed by winding in a cylindrical shape in a state in which a sheet made of a polyolefin nonwoven fabric and a sheet made of a polyester nonwoven fabric are overlapped, and heat-bonded to form a single body.

As the polyester-based nonwoven fabric, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polycarbonate (PC), polyarylate (PAR), or the like may be used.

As the polyolefin nonwoven fabric, polyethylene (PE), polypropylene (PP), or the like may be used.

In addition, the second filter 40 may be formed in a cylindrical shape by forming a fine particle or fiber (microfiber) such as polypropylene (PP) resin in a melt blown method.

The first filter 30 may be formed by forming the activated carbon 32 and / or activated carbon fibers in a cylindrical shape, and wrapping both the inner and outer surfaces of the cylindrical shape with the nonwoven fabric 34.

The first filter 30 forms a sludge solution by mixing and stirring granular activated carbon and a binder and the like, and has a cylindrical core 20 or a nonwoven fabric formed on the outer surface of the cylindrical core 20 having a plurality of holes 23 wound around the nonwoven fabric 36. 36, the core 20 of which is not wound and the hole 23 is not formed, a separate core (not shown), and the like are immersed to be completely immersed in the sludge solution, and then the core 20 and the like are rotated. It is formed into a cylindrical shape by applying a vacuum pressure to the inner hollow portion such as the core 20, taken out of the sludge solution and dried, and wraps the outer surface and both sides of the activated carbon 32 formed into a cylindrical shape with a nonwoven fabric 34. It is also possible to manufacture by the process.

When the first filter 30 is manufactured by the above process, the core 20 and the first filter 30 are integrally formed.

After the first filter 30 is manufactured as described above, the first filter 30 is inserted into the second filter 40.

Since the second filter 40 retains a certain degree of elasticity, the inner diameter of the second filter 40 is equal to or smaller than the outer diameter of the first filter 30, and then the first filter 30 is formed. When forcibly inserted into the second filter 40, the coupling force with the first filter 30 is sufficiently maintained by the elasticity of the second filter 40.

And one embodiment of the composite filter for water purification according to the present invention, as shown in Figure 5, one side is provided with a filter cap 50 is clogged on the bottom, the other side is a filter in which the water outlet 54 is formed on the bottom Install the cap 52.

When the filter caps 50 and 52 are installed as described above, the raw water is introduced into the second filter 40 through the circumferential surface of the second filter 40, the nonwoven fabric 34, and the activated carbon 32. The filter action is made while passing through the nonwoven fabric 34 and the core 20 in a radial direction, and the purified water is discharged to the outside through the water purification outlet 54 of the filter cap 52.

In one embodiment of the composite filter for water purification according to the present invention configured as described above, since the second filter 40 is supported on the outside of the first filter 30 while being pressed inward with a predetermined elastic force, a large amount of water is passed. Or even if the water pressure is high, the shape of the first filter 30 is not easily torn down or blurred.

And while the second filter 40 mainly performs the removal function of the particles, while mainly performing the adsorption function of the pollutant of the first filter 30, the filtration efficiency is maximized.

In the above, it is also possible not to use the nonwoven fabric 36 between the core 20 and the activated carbon 32, and it is also possible to provide the nonwoven fabric 36 as needed.

Even if the hole 20 is not formed in the core 20, it is possible to provide the nonwoven fabric 36 between the activated carbon 32, but in this case, the supporting effect of the activated carbon 32 is improved and the filtration efficiency is improved. This has the advantage of being partially improved, but it also has the disadvantage of complicated material costs and manufacturing processes.

In the above, a preferred embodiment of the composite filter for water purification according to the present invention has been described, but the present invention is not limited thereto, and various modifications can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. This also belongs to the scope of the present invention.

According to the composite filter for water purification according to the present invention made as described above, since a second filter formed of a nonwoven fabric is provided on the outside of the first filter formed of activated carbon or activated carbon fibers, adsorption function of various pollutants by the first filter And a particle removal function by the second filter are all obtained. Therefore, it is possible to provide more efficient water purification efficiency and water purification performance.

According to the composite filter for water purification according to the present invention, since the core is provided inside the first filter and the second filter is installed outside, the first filter has a large amount of water flow or a high water pressure (for example, a manufacturing facility or Even when used for water purification of industrial water, etc., it is not easily released or disturbed, and the bearing capacity of the first filter is greatly improved, and durability is increased.

According to the composite filter for water purification according to the present invention, since the second filter made of a bright monochromatic color such as white is located at the outermost part, it is easy to determine whether the color of the second filter has changed to a reddish red color. In addition, it is possible to effectively know when to replace the filter.

Claims (6)

A hollow core installed inside, A cylindrical first filter installed in close contact with the outer surface of the core and formed of activated carbon or activated carbon fibers; A composite filter for water purification, comprising a cylindrical second filter installed in close contact with the outer surface of the first filter and formed of a nonwoven fabric. The method according to claim 1, The core is a composite filter for water purification which is formed in a cylindrical shape in which a plurality of holes are formed of polypropylene or polyethylene resin. The method according to claim 1, The core is a composite filter for water purification to form a cylindrical shape by laminating a polyolefin nonwoven fabric, polyester nonwoven fabric, polyamide nonwoven fabric or a microfiber of polypropylene resin in a melt blown method. The method according to claim 1, The second filter may be formed by laminating a polyolefin-based nonwoven fabric, a polyester-based nonwoven fabric, or a polyamide-based nonwoven fabric in a cylindrical shape, or by forming a microfiber of polypropylene resin by a melt blown method. The method according to claim 1, The first filter is a composite filter for water purification that wraps the cylindrical outer surface formed of activated carbon or activated carbon fibers with a nonwoven fabric. The method according to claim 1, On one side, install a filter cap with a bottom On the other side, a composite filter for water purification, which installs a filter cap with a water outlet at the bottom.

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