WO2017138477A1 - Water purification filter - Google Patents
Water purification filter Download PDFInfo
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- WO2017138477A1 WO2017138477A1 PCT/JP2017/004165 JP2017004165W WO2017138477A1 WO 2017138477 A1 WO2017138477 A1 WO 2017138477A1 JP 2017004165 W JP2017004165 W JP 2017004165W WO 2017138477 A1 WO2017138477 A1 WO 2017138477A1
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- activated carbon
- binder
- purification filter
- water purification
- water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
Definitions
- the present invention relates to a water purification filter that purifies water by removing chemical substances and fine particles contained in water.
- water purification filters having an activated carbon molded product formed by solidifying activated carbon with a binder are widely known.
- Activated carbon can adsorb chemical substances and fine particles (particularly chemical substances) contained in water.
- the binder is porous so that most of the surface of the activated carbon can come into contact with water, so that the fine particles contained in the water can be captured.
- the binder include cellulose fibers described in Patent Literature 1 and the like, and porous polymers described in Patent Literature 2 and the like.
- the water purification filter can purify the water by removing the chemical substances and fine particles contained in the water (in other words, filtering the water) with the activated carbon and the binder.
- Such a binder is desired to have a large surface area per unit volume and a high strength per unit volume. If the binder has a large surface area per unit volume, the ability to capture fine particles increases, and the surface of the activated carbon easily comes into contact with water. In addition, when the binder has a high strength per unit volume, the amount of the binder can be reduced, so that water easily comes into contact with the surface of the activated carbon.
- the present invention has been made in view of the above reasons, and the object thereof is a water purification filter having an activated carbon molded product formed by solidifying activated carbon with a binder, and the surface area per unit volume of the binder of the activated carbon molded product is large. And it is providing the thing with the high intensity
- a water purification filter is a water purification filter having an activated carbon molded product formed by solidifying activated carbon with a binder, wherein the binder includes cellulose nanofibers. Yes.
- the binder is a mixture of the cellulose nanofibers with another binder material, and the other binder material is finely unwound so that the average fiber The diameter is larger than the cellulose nanofiber, and the cellulose nanofiber is shorter than the average fiber length of the other binder material.
- the surface area per unit volume of the binder of the activated carbon molded product can be large and the strength per unit volume can be high.
- the water purification filter 1 according to the embodiment of the present invention has an activated carbon molded product 2 as shown in FIG.
- the activated carbon molded product 2 is formed by solidifying activated carbon 3 with a binder 4.
- the binder 4 contains cellulose nanofibers.
- Cellulose nanofibers are those obtained by finely unraveling plant fibers to a nano-order (1 nm or more and less than 1000 nm) average fiber diameter (microfibril state). This unraveling method can be dispersed in a solvent, chemically treated, milled, etc., but is not limited. The average fiber diameter can be calculated by observation using a transmission electron microscope or the like.
- Cellulose nanofibers have an average fiber diameter in the order of nanometers, and the cellulose nanofibers overlap each other to form a network structure, and the spaces between the cellulose nanofibers are fine pores of the binder 4. Therefore, the binder 4 has many fine pores and has a large surface area per unit volume. Cellulose nanofibers are high in strength when the average fiber diameter is in the nano order, and can easily maintain a porous structure. Therefore, the binder 4 has high strength per unit volume.
- the binder 4 may be a mixture of cellulose nanofibers and other binder materials.
- other binder materials for example, cellulose fibers and porous polymers
- the average fiber length of other binder materials is preferably shorter (eg, 0.1 ⁇ m to 10 ⁇ m).
- the activated carbon molded product 2 using such a binder 4 can be prepared by separately preparing activated carbon 3, cellulose nanofibers, and other binder materials and mixing them. In this case, the mixing is usually performed in water.
- the activated carbon molded product 2 is generally cylindrical and has a through hole formed along the central axis.
- the water purification filter 1 includes, for example, a nonwoven fabric 5 attached to the side surface of the activated carbon molded product 2, and both end surfaces of the activated carbon molded product 2 with the nonwoven fabric 5 attached thereto. It has a substantially cylindrical shape composed of two caps (for example, made of plastic) 6 and 6 fitted therein. One cap 6 of the two caps 6, 6 has a hole 6 a formed at a position corresponding to the through hole of the activated carbon molded product 2.
- the binder 4 captures fine particles contained in the water through the fine pores.
- the activated carbon 3 adsorbs chemical substances and fine particles (particularly chemical substances) contained in water.
- the shape can be variously changed, and the configuration around the activated carbon molded product 2 (nonwoven fabric 5, caps 6, 6 and the like) can be changed to other configurations as appropriate.
- the binder 4 of the activated carbon molded product 2 has a large surface area per unit volume, it has a high particulate capturing ability (filtration performance), is not easily clogged, and can easily come into contact with the surface of the activated carbon 3.
- the binder 4 since the binder 4 has a high strength per unit volume, the strength of the activated carbon molded product 2 can be increased, and the amount of the binder 4 can be reduced while maintaining the strength of the activated carbon molded product 2. It is. When the amount of the binder 4 is reduced, it is possible to prevent the surface of the activated carbon 3 from being filled with the binder 4, and water easily comes into contact with the surface of the activated carbon 3.
- the binder 4 of the activated carbon molded product 2 is less stretched due to temperature change, the molding accuracy of the activated carbon molded product 2 can be increased. Since the raw material of the binder 4 is abundant and is abundant, the cost of the activated carbon molded product 2 can be reduced.
- the binder 4 of the activated carbon molded product 2 has a property of being easily charged with a positive charge. Thereby, it can be expected that the ability to capture negatively charged fine particles or bacteria in water will be enhanced. Moreover, since the cellulose nanofibers of the binder 4 are in the state of microfibrils having an average fiber diameter of nano order, the outflow of the activated carbon 3 can be suppressed, and adsorption of metal ions or bacteria can be expected.
- the binder 4 is a mixture of cellulose nanofibers and other binder materials, and the other binder materials are finely unwound and have an average fiber diameter larger than that of the cellulose nanofibers. If the fibers are shorter than the average fiber length of the other binder material, the cellulose nanofibers can be easily bundled around the activated carbon 3 from various directions. Thereby, the strength of the activated carbon molded product 2 can be further increased, and the outflow of the activated carbon 3 can be further suppressed.
- the water purification filter 1 described above can be applied to various water purification devices.
- it can be applied to a household water purifier 7 as illustrated in FIG.
- the water purification filter 1 is accommodated in the purification filter housing 71.
- the purification filter housing 71 is formed with a plurality of peripheral surface communication holes 71a on the peripheral surface and an end surface central communication hole 71b at the center of one end surface.
- the water flowing in from the raw water inlet 7 a passes through the flow path 7 b formed inside and reaches the peripheral surface communication hole 71 a of the purification filter housing 71, and the activated carbon molding of the purification filter 1.
- the purified water can be discharged from the purified water outlet 7d through the product 2, passing through the end surface central communication hole 71b of the purification filter container 71, passing through the flow path 7c.
- the water purification filter 1 can make the household water purifier 7 excellent in water purification capability.
- the water purification filter 1 obtains purified water by flowing water from the outer side (circumferential communication hole 71a side) to the inner side (end surface central communication hole 71b side). Washing (back washing) is possible by flowing water from the outside to the outside. In that case, since the water pressure is increased inside the water purification filter 1, it is very useful to increase the strength of the activated carbon molded product 2.
- water generally flows in any of the flow paths (the flow path 7 b, the flow path 7 c, or the flow path not shown) formed therein. By switching between these, purified water can be discharged or raw water can be discharged as it is.
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- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
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Abstract
Provided is a water purification filter equipped with an activated carbon molded article that is produced by solidifying activated carbon with a binder and then molding the solidified product, wherein the binder in the activated carbon molded article has a large surface area per unit volume and also has high strength per unit volume. The water purification filter 1 is equipped with an activated carbon molded article 2 that is produced by solidifying activated carbon 3 with a binder 4 and then molding the solidified product, wherein the binder 4 contains cellulose nanofibers that are produced by finely fiberizing plant fibers and have a nano-order average fiber diameter.
Description
本発明は、水に含まれる化学物質及び微粒子などを除去して水を浄化する水の浄化フィルターに関する。
The present invention relates to a water purification filter that purifies water by removing chemical substances and fine particles contained in water.
従来より、水の浄化フィルターは、活性炭をバインダーで固めて成形した活性炭成形品を有するものが広く知られている。活性炭は、水に含まれる化学物質及び微粒子（そのうち特に化学物質）の吸着が可能である。バインダーは、活性炭の表面の多くが水に接触できるように多孔質になっており、そのため水に含まれる微粒子の捕捉が可能である。バインダーの種類としては、特許文献１などに記載されているセルロース繊維や特許文献２などに記載されている多孔質ポリマーなどがある。水の浄化フィルターは、これらの活性炭とバインダーにより、水に含まれる化学物質及び微粒子を除去して（換言すれば、水をろ過して）水を浄化することができる。
Conventionally, water purification filters having an activated carbon molded product formed by solidifying activated carbon with a binder are widely known. Activated carbon can adsorb chemical substances and fine particles (particularly chemical substances) contained in water. The binder is porous so that most of the surface of the activated carbon can come into contact with water, so that the fine particles contained in the water can be captured. Examples of the binder include cellulose fibers described in Patent Literature 1 and the like, and porous polymers described in Patent Literature 2 and the like. The water purification filter can purify the water by removing the chemical substances and fine particles contained in the water (in other words, filtering the water) with the activated carbon and the binder.
このようなバインダーは、単位体積当たりの表面積がより大きいとともに、単位体積当たりの強度が高いものが望まれる。バインダーは、単位体積当たりの表面積が大きいと、微粒子の捕捉能力が高くなり、また、活性炭の表面に水が接触し易くもなる。また、バインダーは、単位体積当たりの強度が高いと、バインダーの量が少なくてすむため、活性炭の表面に水が接触し易くなる。
Such a binder is desired to have a large surface area per unit volume and a high strength per unit volume. If the binder has a large surface area per unit volume, the ability to capture fine particles increases, and the surface of the activated carbon easily comes into contact with water. In addition, when the binder has a high strength per unit volume, the amount of the binder can be reduced, so that water easily comes into contact with the surface of the activated carbon.
本発明は係る事由に鑑みてなされたものであり、その目的は、活性炭をバインダーで固めて成形した活性炭成形品を有する水の浄化フィルターにおいて、活性炭成形品のバインダーの単位体積当たりの表面積が大きく、かつ、単位体積当たりの強度が高いものを提供することにある。
The present invention has been made in view of the above reasons, and the object thereof is a water purification filter having an activated carbon molded product formed by solidifying activated carbon with a binder, and the surface area per unit volume of the binder of the activated carbon molded product is large. And it is providing the thing with the high intensity | strength per unit volume.
上記目的を達成するために、本発明の実施形態に係る水の浄化フィルターは、活性炭をバインダーで固めて成形した活性炭成形品を有する水の浄化フィルターにおいて、前記バインダーは、セルロースナノファイバーを含んでいる。
In order to achieve the above object, a water purification filter according to an embodiment of the present invention is a water purification filter having an activated carbon molded product formed by solidifying activated carbon with a binder, wherein the binder includes cellulose nanofibers. Yes.
本発明の実施形態に係る水の浄化フィルターは、更に、前記バインダーが、前記セルロースナノファイバーに他のバインダー材料を混合したものであり、該他のバインダー材料が、細かく解きほぐされていて平均繊維径が前記セルロースナノファイバーよりも大きいものであり、前記セルロースナノファイバーが前記他のバインダー材料の平均繊維長よりも短いものである。
In the water purification filter according to the embodiment of the present invention, the binder is a mixture of the cellulose nanofibers with another binder material, and the other binder material is finely unwound so that the average fiber The diameter is larger than the cellulose nanofiber, and the cellulose nanofiber is shorter than the average fiber length of the other binder material.
本発明の水の浄化フィルターによれば、活性炭成形品のバインダーの単位体積当たりの表面積が大きく、かつ、単位体積当たりの強度が高いものとすることができる。
According to the water purification filter of the present invention, the surface area per unit volume of the binder of the activated carbon molded product can be large and the strength per unit volume can be high.
以下、本発明を実施するための形態を図面を参照しながら説明する。本発明の実施形態に係る水の浄化フィルター１は、図１に示すように、活性炭成形品２を有するものである。活性炭成形品２は、活性炭３をバインダー４で固めて成形したものである。
Hereinafter, modes for carrying out the present invention will be described with reference to the drawings. The water purification filter 1 according to the embodiment of the present invention has an activated carbon molded product 2 as shown in FIG. The activated carbon molded product 2 is formed by solidifying activated carbon 3 with a binder 4.
バインダー４は、セルロースナノファイバーを含んでいるものである。セルロースナノファイバーは、植物繊維を平均繊維径がナノオーダー（１ｎｍ以上１０００ｎｍ未満）の状態まで細かく解きほぐされたもの（ミクロフィブリルの状態のもの）である。この解きほぐす方法は、溶媒中の分散処理、化学処理、摩砕処理などが可能であるが、限定されるものではない。なお、平均繊維径は、透過型電子顕微鏡などを用いた観察などによって算出することができる。
The binder 4 contains cellulose nanofibers. Cellulose nanofibers are those obtained by finely unraveling plant fibers to a nano-order (1 nm or more and less than 1000 nm) average fiber diameter (microfibril state). This unraveling method can be dispersed in a solvent, chemically treated, milled, etc., but is not limited. The average fiber diameter can be calculated by observation using a transmission electron microscope or the like.
セルロースナノファイバーは、平均繊維径がナノオーダーの状態であり、セルロースナノファイバー同士が重なって網目状の構造になり、セルロースナノファイバー間の空間はバインダー４の微細孔となる。よって、バインダー４は、多くの微細孔が形成されており、単位体積当たりの表面積が大きい。また、セルロースナノファイバーは、平均繊維径がナノオーダーの状態であると、強度が高く、容易に多孔質の構造を維持できる。よって、バインダー４は、単位体積当たりの強度が高い。
Cellulose nanofibers have an average fiber diameter in the order of nanometers, and the cellulose nanofibers overlap each other to form a network structure, and the spaces between the cellulose nanofibers are fine pores of the binder 4. Therefore, the binder 4 has many fine pores and has a large surface area per unit volume. Cellulose nanofibers are high in strength when the average fiber diameter is in the nano order, and can easily maintain a porous structure. Therefore, the binder 4 has high strength per unit volume.
バインダー４は、セルロースナノファイバーに他のバインダー材料を混合したものとすることができる。この場合、他のバインダー材料（例えば、セルロース繊維や多孔質ポリマーなど）は、細かく解きほぐされていて平均繊維径がセルロースナノファイバーよりも大きいもの（フィブリル状態のもの）とし、セルロースナノファイバーは、他のバインダー材料の平均繊維長（例えば、０．１ｍｍ～１０ｍｍ）よりも、短いもの（例えば、０．１μｍ～１０μｍ）とするのが好ましい。このようなバインダー４を用いた活性炭成形品２は、活性炭３とセルロースナノファイバーと他のバインダー材料を別々に用意し、混合して成形することができる。この場合の混合は、通常は、水の中で行う。
The binder 4 may be a mixture of cellulose nanofibers and other binder materials. In this case, other binder materials (for example, cellulose fibers and porous polymers) are finely unwound and have an average fiber diameter larger than that of cellulose nanofibers (fibril state ones). The average fiber length of other binder materials (eg, 0.1 mm to 10 mm) is preferably shorter (eg, 0.1 μm to 10 μm). The activated carbon molded product 2 using such a binder 4 can be prepared by separately preparing activated carbon 3, cellulose nanofibers, and other binder materials and mixing them. In this case, the mixing is usually performed in water.
活性炭成形品２は、通常、円筒形であり、中心軸に沿って貫通孔が形成されている。水の浄化フィルター１は、このような活性炭成形品２に加えて、例えば、活性炭成形品２の側面に付着された不織布５と、その不織布５が付着した状態の活性炭成形品２の両端面が嵌め込まれた２個のキャップ（例えば、プラスチック製）６、６と、で構成される略円筒形のものである。２個のキャップ６、６のうちの一つのキャップ６には、活性炭成形品２の貫通孔に対応する位置に孔６ａが形成されている。水の浄化フィルター１では、水は、不織布５から入って、活性炭成形品２を通過してキャップ６の孔６ａから出るか、或いは、キャップ６の孔６ａから入って、活性炭成形品２を通過して不織布５から出る。水が活性炭成形品２を通過するときは、バインダー４は、その微細孔によって、水に含まれる微粒子を捕捉する。また、活性炭３は、水に含まれる化学物質及び微粒子（特に化学物質）を吸着する。なお、水の浄化フィルター１においては、形状は様々に変更可能であり、活性炭成形品２の周りの構成（不織布５、キャップ６、６など）は適宜他の構成に変更可能である。
The activated carbon molded product 2 is generally cylindrical and has a through hole formed along the central axis. In addition to the activated carbon molded product 2, the water purification filter 1 includes, for example, a nonwoven fabric 5 attached to the side surface of the activated carbon molded product 2, and both end surfaces of the activated carbon molded product 2 with the nonwoven fabric 5 attached thereto. It has a substantially cylindrical shape composed of two caps (for example, made of plastic) 6 and 6 fitted therein. One cap 6 of the two caps 6, 6 has a hole 6 a formed at a position corresponding to the through hole of the activated carbon molded product 2. In the water purification filter 1, water enters from the nonwoven fabric 5 and passes through the activated carbon molded product 2 and exits from the hole 6 a of the cap 6, or enters through the hole 6 a of the cap 6 and passes through the activated carbon molded product 2. And comes out of the nonwoven fabric 5. When water passes through the activated carbon molded product 2, the binder 4 captures fine particles contained in the water through the fine pores. The activated carbon 3 adsorbs chemical substances and fine particles (particularly chemical substances) contained in water. In addition, in the water purification filter 1, the shape can be variously changed, and the configuration around the activated carbon molded product 2 (nonwoven fabric 5, caps 6, 6 and the like) can be changed to other configurations as appropriate.
活性炭成形品２のバインダー４は、単位体積当たりの表面積が大きいので、微粒子の捕捉能力（ろ過性能）が高く、かつ、目詰まりし難く、活性炭３の表面に水が接触し易くもなる。また、バインダー４は、単位体積当たりの強度が高いので、活性炭成形品２の強度を上げることが可能であり、また、活性炭成形品２の強度を保ちつつバインダー４の量を少なくすることも可能である。バインダー４の量を少なくすると、バインダー４で活性炭３の表面が埋められるのを防ぐことができ、活性炭３の表面に水が接触し易くなる。
Since the binder 4 of the activated carbon molded product 2 has a large surface area per unit volume, it has a high particulate capturing ability (filtration performance), is not easily clogged, and can easily come into contact with the surface of the activated carbon 3. In addition, since the binder 4 has a high strength per unit volume, the strength of the activated carbon molded product 2 can be increased, and the amount of the binder 4 can be reduced while maintaining the strength of the activated carbon molded product 2. It is. When the amount of the binder 4 is reduced, it is possible to prevent the surface of the activated carbon 3 from being filled with the binder 4, and water easily comes into contact with the surface of the activated carbon 3.
また、活性炭成形品２のバインダー４は、温度変化による伸縮が少ないので、活性炭成形品２の成形精度を高くすることができる。バインダー４は、原材料が植物繊維であり豊富に有るので、活性炭成形品２のコストを低減することも可能である。
Further, since the binder 4 of the activated carbon molded product 2 is less stretched due to temperature change, the molding accuracy of the activated carbon molded product 2 can be increased. Since the raw material of the binder 4 is abundant and is abundant, the cost of the activated carbon molded product 2 can be reduced.
また、活性炭成形品２のバインダー４は、正電荷を帯び易い性質がある。それにより、水の中の負に帯電した微粒子や細菌などの捕捉能力が高くなることが期待できる。また、バインダー４のセルロースナノファイバーは、平均繊維径がナノオーダーのミクロフィブリルの状態であるので、活性炭３の流出を抑制でき、また、金属イオン又は細菌などの吸着が期待できる。
Further, the binder 4 of the activated carbon molded product 2 has a property of being easily charged with a positive charge. Thereby, it can be expected that the ability to capture negatively charged fine particles or bacteria in water will be enhanced. Moreover, since the cellulose nanofibers of the binder 4 are in the state of microfibrils having an average fiber diameter of nano order, the outflow of the activated carbon 3 can be suppressed, and adsorption of metal ions or bacteria can be expected.
また、上述したように、バインダー４をセルロースナノファイバーに他のバインダー材料を混合したものとし、他のバインダー材料は細かく解きほぐされていて平均繊維径がセルロースナノファイバーよりも大きいものとし、セルロースナノファイバーは他のバインダー材料の平均繊維長よりも短いものとすると、セルロースナノファイバーが活性炭３の周囲に色々な方向からまとわり付き易くなる。それにより、活性炭成形品２の強度を更に上げることが可能になり、活性炭３の流出を更に抑制可能になる。
In addition, as described above, the binder 4 is a mixture of cellulose nanofibers and other binder materials, and the other binder materials are finely unwound and have an average fiber diameter larger than that of the cellulose nanofibers. If the fibers are shorter than the average fiber length of the other binder material, the cellulose nanofibers can be easily bundled around the activated carbon 3 from various directions. Thereby, the strength of the activated carbon molded product 2 can be further increased, and the outflow of the activated carbon 3 can be further suppressed.
以上説明した水の浄化フィルター１は、様々な水の浄化装置に適用可能である。例えば、図２に例示すような家庭用浄水器７に適用することができる。この家庭用浄水器７では、水の浄化フィルター１は、浄化フィルター収容体７１の中に収容される。浄化フィルター収容体７１には、周面に複数の周面連通孔７１ａ、一つの端面の中央に端面中央連通孔７１ｂ、が形成されている。家庭用浄水器７では、原水流入口７ａから流入した水は、内部に形成された流路７ｂを通過して浄化フィルター収容体７１の周面連通孔７１ａに到り、浄化フィルター１の活性炭成形品２を通過し、浄化フィルター収容体７１の端面中央連通孔７１ｂを通り、流路７ｃを通過して浄水流出口７ｄから浄水を流出させることができる。水の浄化フィルター１により、家庭用浄水器７を浄水能力の優れたものにすることが可能である。また、家庭用浄水器７では、水の浄化フィルター１は、その外側（周面連通孔７１ａ側）から内側（端面中央連通孔７１ｂ側）に水を流して浄水を得ているが、その内側から外側に水を流すことで洗浄（逆洗）が可能である。その場合、水の浄化フィルター１の内側は水圧が高くなるので、活性炭成形品２の強度を上げられることは非常に有用である。なお、家庭用浄水器７を含め一般の家庭用浄水器は、一般に、その内部に形成された流路（流路７ｂ、流路７ｃ、又は図示していない流路）のいずれに水が流れるかを切り替えることにより、浄水を流出させたり原水をそのまま流出させたりすることができる。
The water purification filter 1 described above can be applied to various water purification devices. For example, it can be applied to a household water purifier 7 as illustrated in FIG. In the household water purifier 7, the water purification filter 1 is accommodated in the purification filter housing 71. The purification filter housing 71 is formed with a plurality of peripheral surface communication holes 71a on the peripheral surface and an end surface central communication hole 71b at the center of one end surface. In the domestic water purifier 7, the water flowing in from the raw water inlet 7 a passes through the flow path 7 b formed inside and reaches the peripheral surface communication hole 71 a of the purification filter housing 71, and the activated carbon molding of the purification filter 1. The purified water can be discharged from the purified water outlet 7d through the product 2, passing through the end surface central communication hole 71b of the purification filter container 71, passing through the flow path 7c. The water purification filter 1 can make the household water purifier 7 excellent in water purification capability. Moreover, in the domestic water purifier 7, the water purification filter 1 obtains purified water by flowing water from the outer side (circumferential communication hole 71a side) to the inner side (end surface central communication hole 71b side). Washing (back washing) is possible by flowing water from the outside to the outside. In that case, since the water pressure is increased inside the water purification filter 1, it is very useful to increase the strength of the activated carbon molded product 2. In addition, in general household water purifiers including the home water purifier 7, water generally flows in any of the flow paths (the flow path 7 b, the flow path 7 c, or the flow path not shown) formed therein. By switching between these, purified water can be discharged or raw water can be discharged as it is.
以上、本発明の実施形態に係る水の浄化フィルターについて説明したが、本発明は、上述の実施形態に記載したものに限られることなく、請求の範囲に記載した事項の範囲内でのさまざまな設計変更が可能である。
The water purification filter according to the embodiment of the present invention has been described above, but the present invention is not limited to that described in the above embodiment, and various filters within the scope of the matters described in the claims. Design changes are possible.
１ 水の浄化フィルター
２ 活性炭成形品
３ 活性炭
４ バインダー 1Water purification filter 2 Activated carbon molded product 3 Activated carbon 4 Binder
２ 活性炭成形品
３ 活性炭
４ バインダー 1
Claims (2)
- 活性炭をバインダーで固めて成形した活性炭成形品を有する水の浄化フィルターにおいて、
前記バインダーは、セルロースナノファイバーを含んでいることを特徴とする水の浄化フィルター。 In a water purification filter having an activated carbon molded product formed by solidifying activated carbon with a binder,
The water purification filter, wherein the binder contains cellulose nanofibers. - 請求項１に記載の水の浄化フィルターにおいて、
前記バインダーは、前記セルロースナノファイバーに他のバインダー材料を混合したものであり、該他のバインダー材料は細かく解きほぐされていて平均繊維径が前記セルロースナノファイバーよりも大きいものであり、前記セルロースナノファイバーは前記他のバインダー材料の平均繊維長よりも短いものであることを特徴とする水の浄化フィルター。 The water purification filter according to claim 1,
The binder is obtained by mixing the cellulose nanofiber with another binder material, and the other binder material is finely unwound and has an average fiber diameter larger than that of the cellulose nanofiber. A water purification filter, wherein the fibers are shorter than the average fiber length of the other binder material.
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| US20210039033A1 (en) * | 2019-08-06 | 2021-02-11 | Endeavour Lab Co., Ltd. | Hybrid filter for filtering out fine and ultrafine dust |
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