JP2009101250A - Fine bubble generating apparatus - Google Patents

Fine bubble generating apparatus Download PDF

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JP2009101250A
JP2009101250A JP2006190218A JP2006190218A JP2009101250A JP 2009101250 A JP2009101250 A JP 2009101250A JP 2006190218 A JP2006190218 A JP 2006190218A JP 2006190218 A JP2006190218 A JP 2006190218A JP 2009101250 A JP2009101250 A JP 2009101250A
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liquid
disk
bubbles
flange
mesh member
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JP3958346B1 (en
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Makoto Minamidate
誠 南舘
Koichi Yamakoshi
幸一 山腰
Heitake Minamidate
兵武 南舘
Taichi Yamakoshi
太一 山腰
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Priority to PCT/JP2007/063642 priority patent/WO2008007631A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23312—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a conduit surrounding the stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2334—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer
    • B01F23/23342—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer the stirrer being of the centrifugal type, e.g. with a surrounding stator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/52—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle with a rotary stirrer in the recirculation tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/53—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0725—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis on the free end of the rotating axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
    • 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
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • 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
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/18—Removal of treatment agents after treatment
    • C02F2303/185—The treatment agent being halogen or a halogenated compound

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Physical Water Treatments (AREA)
  • Degasification And Air Bubble Elimination (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fine bubble generating apparatus capable of stably generating fine bubbles using a comparatively simple structure and at low cost. <P>SOLUTION: The fine bubble generating apparatus 1 comprises a motor 2, a rotary shaft 4 rotated by the motor 2, a rotary disc 5 attached to the tip end of the rotary shaft 4, a cylinder 6 surrounding the outer periphery of the rotary shaft 4 with a space and having a gas introducing port 10a, a flange 9 attached to the tip end of the cylinder 6 and surrounding the outer periphery of the disc 5 with a gap, and a tubular mesh member 11 extended from the flange 9. The disc 5 is rotated in liquid to allow liquid at the lower end of the disc 5 to flow outward by centrifugal force, this liquid flow is used to suck out gas in the cylinder 6 through the gap between the disc 5 and the flange 9 and mix it with the liquid to form a bubble-mixed liquid flow, and this liquid flow is allowed to impinge on the mesh member 11 to atomize bubbles while being passed through the mesh member 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、水道水や河川水などの液中において、空気や酸素、炭酸ガスなどの微細気泡（マイクロバブル、ナノバブル）を発生させる装置及び方法に関する。さらには、水道水中に微細気泡を放出して水道水中の塩素分を除去する装置に関する。   The present invention relates to an apparatus and method for generating fine bubbles (microbubbles, nanobubbles) such as air, oxygen, and carbon dioxide in a liquid such as tap water and river water. Furthermore, it is related with the apparatus which discharge | releases a fine bubble in tap water and removes the chlorine content in tap water.

微細気泡発生装置は、例えば、水道水や河川水の水中に微細気泡を混入させて溶存酸素量を増加させ、水を浄化するための装置として知られている。微細気泡とは、例えば、径が１ｍｍ以下の気泡であり、比表面積が大きく、水中での滞留時間が長いとともに水中での拡散性も優れているので、その性質を活かして生活用水から河川水や漁業関係などにわたる広い範囲に適用される可能性を有している。   The fine bubble generating device is known as a device for purifying water by mixing fine bubbles in tap water or river water to increase the amount of dissolved oxygen, for example. The fine bubbles are, for example, bubbles having a diameter of 1 mm or less, a large specific surface area, a long residence time in water, and excellent diffusibility in water. It has the potential to be applied to a wide range of areas such as fisheries and fisheries.

このような装置としては、例えば、加圧した気体をセラミックなどの多孔質体を通して液体中に送り込んで、微細気泡を発生させる装置がある。しかし、この装置は、気体を加圧して多孔質体に送り込むために、高出力のコンプレッサ等が必要になり、エネルギ消費が多いとともに装置が大型化するのでコスト高となる。   As such an apparatus, for example, there is an apparatus that generates fine bubbles by sending a pressurized gas into a liquid through a porous body such as ceramic. However, since this apparatus pressurizes gas and sends it into the porous body, a high-output compressor or the like is required, which consumes a lot of energy and increases the size of the apparatus, resulting in high cost.

そこで、液体中で回転体を回転させて液中に負圧状態を形成して、この負圧を利用して空気を液中に取り込む装置が提案されている（例えば、特許文献１参照）。この装置では、微小なクリアランスを介して空気を取り込むことにより、微細な気泡を液中に発生することができるとされている。また、気泡をさらに微細化するために、ピンミルやベベルギアなどの気泡粉砕手段を設けることも記載されている。ただし、この装置では、気泡の微細化が不十分と考えられる。また、ピンミルやベベルギアなどの気泡粉砕手段を設けるとすると、装置構成が複雑となる。   Therefore, a device has been proposed in which a rotating body is rotated in a liquid to form a negative pressure state in the liquid, and air is taken into the liquid using the negative pressure (see, for example, Patent Document 1). In this apparatus, it is said that fine air bubbles can be generated in the liquid by taking in air through a fine clearance. It also describes that a bubble crushing means such as a pin mill or a bevel gear is provided in order to further refine the bubbles. However, in this apparatus, it is considered that the bubbles are not sufficiently refined. Further, if a bubble crushing means such as a pin mill or a bevel gear is provided, the apparatus configuration becomes complicated.

特開２０００−１５０６８JP 2000-15068 A

本発明は上記の問題点に鑑みてなされたものであって、比較的簡単な構成かつ低コストで、微細気泡を安定して発生できる微細気泡発生装置などを提供することを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a microbubble generator and the like that can stably generate microbubbles with a relatively simple configuration and low cost.

本発明の微細気泡発生装置は、 モータと、 該モータによって回転される回転軸と、 該回転軸の先端に取り付けられた回転ディスクと、 前記回転軸の外周をスペースをおいて取り囲む、気体導入口を有する筒体と、 該筒体の先端部に取り付けられた、前記ディスクの外周を小スキマを隔てて取り囲むフランジと、 該フランジの先に設けられた、筒状のメッシュ部材と、を具備し、 前記ディスクを液中で回転させ、遠心力により該ディスク下面の液を外方向に流し、この液の流れによって前記ディスクとフランジとのスキマから前記筒体内の気体を吸い出しながら前記液と混合させて気泡混合液流を作り、この液流を前記メッシュ部材に当てて通しながら気泡を細分化することを特徴とする。   The fine bubble generating device of the present invention includes a motor, a rotating shaft rotated by the motor, a rotating disk attached to a tip of the rotating shaft, and a gas introduction port surrounding the outer periphery of the rotating shaft with a space. A flange that is attached to the tip of the cylinder and surrounds the outer periphery of the disk with a small gap, and a cylindrical mesh member provided at the tip of the flange. The disk is rotated in the liquid, and the liquid on the lower surface of the disk is caused to flow outward by centrifugal force, and the liquid is mixed with the liquid while sucking out the gas in the cylinder from the gap between the disk and the flange. Then, a bubble mixed liquid flow is formed, and the bubbles are subdivided while passing the liquid flow through the mesh member.

本発明によれば、回転ディスクの遠心力によって液中に高速液流と負圧状態を作り、この負圧を利用して気体を液中に取り込んで気泡混合液流を作るので、加圧気体を使用する場合のような高出力のコンプレッサ等の装置が不要であり、装置の小型化・省エネを図れる。また、高速の気泡混合液流をメッシュ部材に当てることで気泡が細分化され、微細気泡を生成させる。この際、高速の気泡混合液流がメッシュ部材に当たって速度が低下するので、液中に渦が発生したり、液面が盛り上がったり乱れることが少ない。このため、全方向にほぼ均等に拡散し、液中での滞留時間が比較的長い微細気泡を発生させることができる。   According to the present invention, a high-speed liquid flow and a negative pressure state are created in the liquid by the centrifugal force of the rotating disk, and the gas is taken into the liquid using this negative pressure to create a bubble mixed liquid flow. This eliminates the need for high-output compressors and other devices such as those used when using, and allows for downsizing and energy saving of the devices. Further, by applying a high-speed bubble mixed liquid flow to the mesh member, the bubbles are subdivided to generate fine bubbles. At this time, since the high-speed bubble mixed liquid flow hits the mesh member and the speed is lowered, vortex is generated in the liquid, and the liquid surface is less likely to rise or be disturbed. For this reason, it is possible to generate fine bubbles that diffuse almost uniformly in all directions and have a relatively long residence time in the liquid.

この微細気泡は、後述するように、水道水中に溶け込んだ塩素を大気中に放出することで水道水中の塩素分を除去したり、酸素富化水や炭酸温泉水の製造など、生活面から産業面まで幅広い分野に適用できる。   As will be described later, these fine bubbles are released from the daily life by removing chlorine dissolved in tap water into the atmosphere to remove chlorine in tap water, producing oxygen-enriched water and carbonated hot spring water, etc. It can be applied to a wide range of fields.

本発明においては、 前記メッシュ部材が、重ねられた複数のメッシュ網であることが好ましい。
この場合、メッシュ網を通過するごとに気泡を細分化できるので、極めて微細な気泡を発生できる。 In the present invention, it is preferable that the mesh member is a plurality of mesh nets stacked.
In this case, since the bubbles can be subdivided every time the mesh net is passed, extremely fine bubbles can be generated.

さらに、 前記メッシュ網の開口サイズが、５０〜５００メッシュであることが好ましい。
メッシュ網の開口サイズが大きすぎると微細化が不足となり、小さすぎると気泡混合液流が通りにくい。このため、開口サイズが、５０〜５００メッシュ、さらに好ましくは１００〜４００メッシュであることが好ましい。 Furthermore, it is preferable that the opening size of the mesh net is 50 to 500 mesh.
If the opening size of the mesh net is too large, the micronization is insufficient, and if it is too small, the bubble mixture liquid flow is difficult to pass. For this reason, it is preferable that opening size is 50-500 mesh, More preferably, it is 100-400 mesh.

本発明の微細気泡発生方法は、 液中に回転ディスクを置いて該ディスクに触れる液に遠心力による流れを与え、 この流れ中に気体を混入させて気泡混入液流を作り、 該気泡混入液流をメッシュ部材に当てて通しながら気泡を細分化することを特徴とする。   In the method of generating fine bubbles of the present invention, a rotating disk is placed in a liquid, a flow caused by centrifugal force is applied to the liquid that touches the disk, a gas is mixed in the flow to create a bubble mixed liquid flow, and the bubble mixed liquid It is characterized in that the bubbles are subdivided while passing the flow through the mesh member.

本発明の水中塩素分除去装置は、 モータと、 該モータによって回転される回転軸と、 該回転軸の先端に取り付けられた回転ディスクと、 前記回転軸の外周をスペースをおいて取り囲む、空気導入口を有する筒体と、 該筒体の先端部に取り付けられた、前記ディスクの外周を小スキマを隔てて取り囲むフランジと、 該フランジの先に設けられた、筒状のメッシュ部材と、を具備し、 前記ディスクを水中で回転させ、遠心力により該ディスク下面の水を外方向に流し、この水の流れによって前記ディスクとフランジとのスキマから前記筒体内の空気を吸い出しながら前記水と混合させて気泡混合液流を作り、この液流を前記メッシュ部材に当てて通しながら気泡を細分化して微細気泡を発生させ、この微細気泡により、前記水中の塩素分を除去することを特徴とする。   An apparatus for removing chlorine in water according to the present invention includes a motor, a rotating shaft rotated by the motor, a rotating disk attached to a tip of the rotating shaft, and an air introduction surrounding the outer periphery of the rotating shaft with a space. A cylinder having a mouth, a flange attached to the tip of the cylinder and surrounding the outer periphery of the disk with a small gap, and a cylindrical mesh member provided at the end of the flange. The disk is rotated in water, the water on the lower surface of the disk is caused to flow outward by centrifugal force, and the water is mixed with the water while sucking out the air in the cylinder from the gap between the disk and the flange. A bubble mixed liquid stream is created, and the liquid stream is passed through the mesh member to subdivide the bubbles to generate fine bubbles. And removing the.

水道水中に空気の微細気泡を混入させると、水道水中に含まれる塩素分が微細気泡に気体状となって溶け込む。そして、この気泡が徐々に上昇して大気中に放出されることで、水道水中の塩素分が除去されると考えられる。この水中塩素分除去装置は、飲料水や観賞魚の水槽用として使用できる。   When fine air bubbles are mixed in tap water, the chlorine contained in the tap water dissolves in gaseous form in the fine bubbles. And it is thought that the chlorine content in tap water is removed because this bubble gradually rises and is released into the atmosphere. This underwater chlorine content removal device can be used for drinking water and aquarium fish tanks.

以上の説明から明らかなように、本発明によれば、比較的簡単な構成かつ低コストの、拡散性が良好で液中での滞留時間の長い微細気泡を発生できる装置を提供できる。   As is apparent from the above description, according to the present invention, it is possible to provide a device that can generate fine bubbles having a relatively simple structure and low cost, good diffusibility, and a long residence time in the liquid.

発明を実施するための形態BEST MODE FOR CARRYING OUT THE INVENTION

以下、本発明の実施の形態について、図面を参照しながら詳細に説明する。
図１は、本発明の実施の形態に係る微細気泡発生装置の構成の一例を説明する図であり、図１（Ａ）は断面図、図１（Ｂ）は一部断面図である。
微細気泡発生装置１は、モータ２と、モータ２によって回転される回転軸４と、回転軸４の先端に取り付けられた回転ディスク５を備える。さらに、回転軸４の外周をスペースをおいて取り囲む筒体６と、筒体６の先に設けられた、筒状のメッシュ部材１１とを備える。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1A and 1B are diagrams for explaining an example of a configuration of a microbubble generator according to an embodiment of the present invention. FIG. 1A is a cross-sectional view, and FIG. 1B is a partial cross-sectional view.
The microbubble generator 1 includes a motor 2, a rotating shaft 4 rotated by the motor 2, and a rotating disk 5 attached to the tip of the rotating shaft 4. Furthermore, a cylindrical body 6 that surrounds the outer periphery of the rotary shaft 4 with a space, and a cylindrical mesh member 11 provided at the tip of the cylindrical body 6 are provided.

モータ２の出力軸２ａには、カップリング３を介して回転軸４が連結されている。回転軸４の先端には、回転ディスク５が取り付けられている。回転ディスク５は、先端に向って先細の薄い円錐状の部材である。同ディスク５の、モータ２の側の面は平面となっており、周縁のエッジは鋭く尖るように加工されている。回転ディスク５は、回転軸４の先端に螺合や接着剤などにより取り付けられる。   A rotating shaft 4 is connected to the output shaft 2 a of the motor 2 via a coupling 3. A rotating disk 5 is attached to the tip of the rotating shaft 4. The rotating disk 5 is a thin conical member that tapers toward the tip. The surface of the disk 5 on the motor 2 side is a flat surface, and the peripheral edge is processed to be sharp. The rotating disk 5 is attached to the tip of the rotating shaft 4 by screwing or an adhesive.

モータ２と回転ディスク５との間には、回転軸４をスペースを開けて取り囲む筒体６が取り付けられている。筒体６は、モータ回転軸４と同軸上の軸孔６ａを有する部材で、モータ２を覆う基部７と、回転軸４に沿って延びる中央部８と、外方向に張り出す先端フランジ部９とからなる。各部は別々に作製したものを組み立てたものでも、各部が一体に作製されたものでもよい。   Between the motor 2 and the rotating disk 5, a cylindrical body 6 surrounding the rotating shaft 4 with a space is attached. The cylindrical body 6 is a member having a shaft hole 6a coaxial with the motor rotation shaft 4, and includes a base portion 7 that covers the motor 2, a central portion 8 that extends along the rotation shaft 4, and a distal end flange portion 9 that projects outward. It consists of. Each part may be an assembly of separately manufactured parts, or each part may be integrally manufactured.

中央部８の基部寄り（モータ２寄り）の部分には、気体導入口１０が開けられている。この気体導入口１０を介して、筒体６の外部と軸孔６ａの中とが連通する。先端フランジ部９は、短い円柱状の部分であり、中央部８の先端に嵌合固定されている。フランジ部９の先端面９ａは中央が凹むように錐状に傾斜している。この先端面９ａと回転ディスク５との間には、空間が形成されている。また、図１（Ｂ）に示すように、フランジ部９の先端の外周縁と、回転ディスク５の外周縁との間にはスキマｄが開いている。スキマｄの幅は、小型の装置で１ｍｍ以下であることが好ましい。混入気泡の寸法を小さくするにもスキマｄは小さい方が好ましい。なお、大型の装置では、５〜１０ｍｍ程度以下で可能な限り小さいことが好ましい。
なお、気体導入口１０には、様々な種類のガス源を接続することができる。 A gas inlet 10 is opened at a portion of the central portion 8 near the base (near the motor 2). The outside of the cylinder 6 communicates with the inside of the shaft hole 6a through the gas inlet 10. The front end flange portion 9 is a short cylindrical portion, and is fitted and fixed to the front end of the central portion 8. The front end surface 9a of the flange portion 9 is inclined in a conical shape so that the center is recessed. A space is formed between the front end surface 9 a and the rotating disk 5. Further, as shown in FIG. 1B, a gap d is opened between the outer peripheral edge at the tip of the flange portion 9 and the outer peripheral edge of the rotary disk 5. The width of the gap d is preferably 1 mm or less with a small device. In order to reduce the size of the mixed bubbles, it is preferable that the gap d is small. In addition, in a large sized apparatus, it is preferable that it is as small as possible with about 5-10 mm or less.
Various types of gas sources can be connected to the gas inlet 10.

フランジ部９の周囲には、筒状のメッシュ部材１１が、フランジ部９の先に延び出すように取り付けられている。筒状メッシュ部材１１は、例えば、３層に重ねられた筒状のメッシュ網１２ａ、１２ｂ、１２ｃで構成される。各メッシュ網の好ましい開口サイズは、５０〜５００メッシュ、より好ましくは１００〜４００メッシュである。   A cylindrical mesh member 11 is attached around the flange portion 9 so as to extend beyond the flange portion 9. The cylindrical mesh member 11 includes, for example, cylindrical mesh nets 12a, 12b, and 12c that are stacked in three layers. The preferred opening size of each mesh net is 50 to 500 mesh, more preferably 100 to 400 mesh.

次に、この微細気泡発生装置の動作を説明する。
図２は、微細気泡発生装置の使用状態を説明する図である。
まず、装置１の回転ディスク５が下となるように保持し、回転ディスク５を水中に沈める。このとき、筒体６の空気導入口１０は水面上とする。回転ディスク３と筒体６のフランジ部９との間には小さいスキマｄが開いているので、同スキマｄから液体が筒体６の軸孔６ａ内に入り込む。そして、モータ２を駆動して回転軸４を回転させて、回転ディスク５を回転させる。すると、回転ディスク５の遠心力により、同ディスク５の近傍に存在する液体が高速で外方向に流れる。これにより、ディスク５とフランジ先端面９ａとの間の空間が負圧になり、さらに回転させると、軸孔６ａ内には水がなくなると思われる。その結果、筒体６の空気導入口１０から筒体軸孔６ａへ空気が連続して引き込まれる。 Next, the operation of this fine bubble generator will be described.
FIG. 2 is a diagram for explaining a usage state of the fine bubble generating device.
First, the rotating disk 5 of the apparatus 1 is held so as to be down, and the rotating disk 5 is submerged in water. At this time, the air inlet 10 of the cylinder 6 is on the water surface. Since a small gap d is opened between the rotating disk 3 and the flange portion 9 of the cylinder 6, the liquid enters the shaft hole 6 a of the cylinder 6 from the gap d. Then, the motor 2 is driven to rotate the rotating shaft 4 to rotate the rotating disk 5. Then, the liquid existing in the vicinity of the disk 5 flows outward at a high speed by the centrifugal force of the rotating disk 5. As a result, the space between the disk 5 and the flange front end surface 9a becomes a negative pressure, and if it is further rotated, it seems that there is no water in the shaft hole 6a. As a result, air is continuously drawn from the air inlet 10 of the cylinder 6 into the cylinder shaft hole 6a.

軸孔６ａ内に引き込まれた空気は、回転ディスク５とフランジ部９との間のスキマｄから外方向に流される。このときに、高速の液流に空気が混合され、気泡混合液流が形成される。この気泡混合液流は、フランジ部９の周囲に配置されているメッシュ部材１１に当たりながら同部材を通過する。このとき、回転ディスク５の高速回転により気泡混合液流はかなりの高速でメッシュ部材１１に当たることになる。メッシュ部材１１は、前述のように３層のメッシュ網１２で作製されているので、気泡は内側のメッシュ網１２ａから外側のメッシュ網１２ｃへ通過するごとに細分化され、最終的には非常に微細な気泡となる。なお、回転ディスク５は高速回転しているので、遠心力により発生する気泡混合液流もかなりの高速で螺旋状に回転するが、メッシュ部材１１に当たる毎に速度が緩和される。このため、渦や、液面が盛り上がるなどの液の乱れは発生せず、微細な気泡がメッシュ部材１１から全方向へ均等に拡散していく。   The air drawn into the shaft hole 6 a flows outward from the gap d between the rotating disk 5 and the flange portion 9. At this time, air is mixed with the high-speed liquid flow to form a bubble mixed liquid flow. The bubble mixed liquid flow passes through the member while hitting the mesh member 11 arranged around the flange portion 9. At this time, the bubble mixed liquid flow hits the mesh member 11 at a considerably high speed by the high-speed rotation of the rotary disk 5. Since the mesh member 11 is made of the three-layer mesh net 12 as described above, the bubbles are subdivided each time they pass from the inner mesh net 12a to the outer mesh net 12c. It becomes a fine bubble. Since the rotating disk 5 rotates at a high speed, the bubble mixed liquid flow generated by the centrifugal force also rotates in a spiral shape at a considerably high speed, but the speed is alleviated each time it hits the mesh member 11. For this reason, turbulence and liquid disturbance such as a rise in the liquid level do not occur, and fine bubbles uniformly diffuse from the mesh member 11 in all directions.

この装置１の適用例を説明する。
ア）水道水
タンクや水槽に溜められた水道水に気体導入口１０から空気を導入し、水道水中に空気の微細気泡を発生させる。すると、水道水中に含まれる塩素分が微細気泡に気体状となって溶け込む。そして、この気泡が徐々に上昇して大気中に放出されることで、水道水中の塩素分が除去される（効果は実施例で後述する）。この場合、飲料水用や観賞魚の飼育用に使用できる。
イ）飲料水
気体導入口１０に酸素源（あるいは空気でもよい）を接続し、飲料水に同口から酸素を導入すると、酸素が高濃度に溶け込んだ水を提供できる。溶存酸素濃度を高くすることで、嫌気性菌の増殖防止等の効果が期待できる。
ウ）浴槽
浴槽に溜められたお湯に、気体導入口１０から空気を導入し、お湯の中に微細気泡を発生させる。気体導入口１０を炭酸ガス源に接続すると、浴液中に炭酸ガス微細気泡が発生する（いわゆる炭酸温泉）。このような炭酸ガス微細気泡により、温浴効果が高められ、血行を促進させるという効果が期待できる。 An application example of the apparatus 1 will be described.
A) Tap water Air is introduced into the tap water stored in the tank or water tank from the gas inlet 10 to generate fine air bubbles in the tap water. Then, the chlorine content contained in tap water dissolves in the form of gas in the fine bubbles. Then, the bubbles gradually rise and are released into the atmosphere, so that the chlorine content in the tap water is removed (the effect will be described later in Examples). In this case, it can be used for drinking water or breeding ornamental fish.
B) Drinking water When an oxygen source (or air) is connected to the gas inlet 10 and oxygen is introduced into the drinking water from the outlet, water in which oxygen is dissolved at a high concentration can be provided. By increasing the dissolved oxygen concentration, an effect such as prevention of growth of anaerobic bacteria can be expected.
C) Bathtub Air is introduced into the hot water stored in the bathtub from the gas inlet 10 to generate fine bubbles in the hot water. When the gas inlet 10 is connected to a carbon dioxide gas source, fine carbon dioxide bubbles are generated in the bath liquid (so-called carbonated hot spring). Such carbon dioxide fine bubbles can be expected to enhance the warm bath effect and promote blood circulation.

また、河川や湖沼の水質改善の観点からすると、雑菌類及び赤潮プランクトンの異常発生予防対策としても有効である。   In addition, from the viewpoint of improving the water quality of rivers and lakes, it is also effective as a preventive measure against the occurrence of abnormal fungi and red tide plankton.

なお、この微細気泡発生装置１は、適用する分野での液の種類や量によって、装置の大きさや形状、出力などを変更して使用する。   The fine bubble generating device 1 is used by changing the size, shape, output, etc. of the device depending on the type and amount of liquid in the field to which it is applied.

微細気泡発生装置１を水中塩素分除去装置として使用する例を説明する。
水中塩素分除去装置は、図１の微細気泡発生装置１と同じ構造を有する。装置の基本構成を以下に示す。
モータ２：出力２００Ｗ、回転数（最高）５，０００〜６，０００ｒｐｍ、
回転ディスク５：径３８ｍｍ、
メッシュ部材１１：開口サイズ２００メッシュのメッシュ網１２を３枚重ねたもの。 An example in which the microbubble generator 1 is used as an underwater chlorine content removing device will be described.
The underwater chlorine content removing device has the same structure as the fine bubble generating device 1 of FIG. The basic configuration of the device is shown below.
Motor 2: output 200 W, rotation speed (maximum) 5,000 to 6,000 rpm,
Rotating disk 5: diameter 38 mm,
Mesh member 11: Three mesh nets 12 having an opening size of 200 mesh are stacked.

この微細気泡発生装置１を使用して、水道水の塩素分除去効果を調べた。塩素分の検出は試薬（残留塩素試験オルソトリジン溶液）を使用した。この試薬は、液中に塩素分が存在した場合は液を黄色に変色させ、塩素分が存在しない場合は液を変色させない。   Using this microbubble generator 1, the chlorine removal effect of tap water was examined. A reagent (residual chlorine test orthotridine solution) was used for detection of the chlorine content. This reagent changes the color of the liquid to yellow when chlorine is present in the liquid, and does not change the color of the liquid when no chlorine is present.

水槽に５リットルの未処理の水道水を溜める。この水道水を、試薬を用いて検査すると、黄色に変色し、塩素が含まれていることがわかる。次に、図２に示すようにこの水道水に微細気泡発生装置１で５分間空気の微細気泡を発生させた。この際、極めて細かい気泡を含む霧のような水がメッシュ部材１１の表面にジワーッと流れ出てきた。そして、その気泡を含む水は、上下に拡散するように水槽中に広がった。この霧のような状態は、装置１の運転を止めても３分程度は、あまり変化なかった。   Store 5 liters of untreated tap water in the aquarium. When this tap water is inspected using a reagent, it turns out to be yellow and it is found that chlorine is contained. Next, as shown in FIG. 2, fine bubbles of air were generated in this tap water by the fine bubble generator 1 for 5 minutes. At this time, water such as mist containing extremely fine bubbles spilled out on the surface of the mesh member 11. And the water containing the bubble spread in the water tank so that it might diffuse up and down. This foggy state did not change much for about 3 minutes even when the operation of the apparatus 1 was stopped.

この運転処理後の水道水を、試薬を用いて検査すると、変色せず、塩素分が除去されたことが確認された。これは、微細気泡に水道水中の塩素が気体状となって溶け込み、この気泡が徐々に上昇して大気中に放出されることで、水道水中の塩素分が除去されたものと考えられる。なお、メッシュ部材１１を外して装置１を運転させたが、気泡のサイズが細かくならず、同じ時間運転後も塩素分の除去は不十分であった。   When the tap water after the operation treatment was inspected using a reagent, it was confirmed that the chlorine content was removed without discoloration. This is considered to be because chlorine in tap water melts into fine bubbles in a gaseous state, and the bubbles gradually rise and are released into the atmosphere, so that chlorine in tap water is removed. In addition, although the mesh member 11 was removed and the apparatus 1 was drive | operated, the bubble size did not become fine and the removal of the chlorine content was inadequate even after the operation for the same time.

この装置を、飲料水中の塩素を除去するために使用する場合は、必要分の水道水をいったんタンクなどに保存し、微細気泡発生装置を所定の時間稼動させた後、使用する。   When this apparatus is used for removing chlorine in drinking water, a necessary amount of tap water is once stored in a tank or the like, and the fine bubble generating apparatus is operated for a predetermined time and then used.

本発明の実施の形態に係る微細気泡発生装置の構成の一例を説明する図であり、図１（Ａ）は断面図、図１（Ｂ）は一部断面図である。It is a figure explaining an example of the composition of the fine bubble generating device concerning an embodiment of the invention, and Drawing 1 (A) is a sectional view and Drawing 1 (B) is a partial sectional view. 微細気泡発生装置の使用状態を説明する図である。It is a figure explaining the use condition of a microbubble generator.

符号の説明Explanation of symbols

１ 微細気泡発生装置 ２ モータ
３ カップリング ４ 回転軸
５ 回転ディスク ６ 筒体
７ 基部 ８ 中央部
９ フランジ部 １０ 気体導入口
１１ メッシュ部材 １２ メッシュ網 DESCRIPTION OF SYMBOLS 1 Fine bubble generator 2 Motor 3 Coupling 4 Rotating shaft 5 Rotating disk 6 Cylindrical body 7 Base part 8 Center part 9 Flange part 10 Gas inlet 11 Mesh member 12 Mesh net | network

本発明の微細気泡発生方法は、 液中に回転ディスクを置いて該ディスクに触れる液に遠心力による外方向の流れと負圧状態を作り、この負圧を利用して気体を液中に取り込んで気泡混入液流を作り、 該気泡混入液流をメッシュ部材に当てて通しながら気泡を細分化することを特徴とする。 The method of generating fine bubbles according to the present invention is to place a rotating disk in a liquid, create an outward flow and a negative pressure state due to centrifugal force in the liquid touching the disk, and take in the gas into the liquid using this negative pressure. A bubble-containing liquid flow is formed by the method, and the bubbles are subdivided while passing the bubble-containing liquid flow through a mesh member.

本発明は、水道水や河川水などの液中において、空気や酸素、炭酸ガスなどの微細気泡（マイクロバブル、ナノバブル）を発生させる装置に関する。 The present invention, in the liquid, such as tap water or river water, relates to air or oxygen, equipment for generating fine bubbles such as carbon dioxide (microbubbles, nanobubbles).

モータと、 該モータによって回転される回転軸と、 該回転軸の先端に取り付けられた回転ディスクと、 前記回転軸の外周をスペースをおいて取り囲む、気体導入口を有する筒体と、 該筒体の先端部に取り付けられた、前記ディスクの外周縁をスキマを隔てて取り囲むフランジと、 該フランジの周囲から先に延び出すように設けられた、筒状のメッシュ部材と、を具備し、 前記ディスクを液中で回転させ、遠心力により該ディスク下面の液を外方向に流し、この液の流れによって前記ディスクとフランジとのスキマから前記筒体内の気体を吸い出しながら前記液と混合させて気泡混合液流を作り、この液流を前記メッシュ部材に当てて通しながら気泡を細分化することを特徴とする。 A motor, a rotating shaft rotated by the motor, a rotating disk attached to a tip of the rotating shaft, a cylinder having a gas introduction port surrounding the outer periphery of the rotating shaft with a space, and the cylinder A flange that is attached to the tip of the disk and surrounds the outer peripheral edge of the disk with a gap therebetween, and a cylindrical mesh member provided so as to extend first from the periphery of the flange. The liquid on the lower surface of the disk is caused to flow outward by centrifugal force, and the liquid is mixed with the liquid while sucking out the gas in the cylinder from the gap between the disk and the flange. A liquid flow is created, and bubbles are subdivided while passing the liquid flow through the mesh member.

本発明に関連する微細気泡発生方法は、 液中に回転ディスクを置いて該ディスクに触れる液に遠心力による流れを与え、 この流れ中に気体を混入させて気泡混入液流を作り、 該気泡混入液流をメッシュ部材に当てて通しながら気泡を細分化することを特徴とする。 The method of generating fine bubbles related to the present invention is to place a rotating disk in a liquid and apply a flow by centrifugal force to the liquid that touches the disk, and mix the gas into the flow to create a bubble-containing liquid flow. It is characterized in that the bubbles are subdivided while passing the mixed liquid flow through the mesh member.

本発明に関連する水中塩素分除去装置は、 モータと、 該モータによって回転される回転軸と、 該回転軸の先端に取り付けられた回転ディスクと、 前記回転軸の外周をスペースをおいて取り囲む、空気導入口を有する筒体と、 該筒体の先端部に取り付けられた、前記ディスクの外周を小スキマを隔てて取り囲むフランジと、 該フランジの先に設けられた、筒状のメッシュ部材と、を具備し、 前記ディスクを水中で回転させ、遠心力により該ディスク下面の水を外方向に流し、この水の流れによって前記ディスクとフランジとのスキマから前記筒体内の空気を吸い出しながら前記水と混合させて気泡混合液流を作り、この液流を前記メッシュ部材に当てて通しながら気泡を細分化して微細気泡を発生させ、この微細気泡により、前記水中の塩素分を除去することを特徴とする。
 An underwater chlorine content removal device related to the present invention includes a motor, a rotating shaft rotated by the motor, a rotating disk attached to a tip of the rotating shaft, and surroundings an outer periphery of the rotating shaft with a space therebetween, A cylinder having an air inlet, a flange attached to the tip of the cylinder and surrounding the outer periphery of the disk with a small gap, and a cylindrical mesh member provided at the end of the flange; The disk is rotated in water, the water on the lower surface of the disk is caused to flow outward by centrifugal force, and the water and the water are sucked out from the gap between the disk and the flange by this water flow. A bubble mixed liquid stream is made by mixing, and fine bubbles are generated by subdividing the bubbles while passing the liquid stream through the mesh member. It is characterized by removing the element.

Claims (5)

モータと、
該モータによって回転される回転軸と、
該回転軸の先端に取り付けられた回転ディスクと、
前記回転軸の外周をスペースをおいて取り囲む、気体導入口を有する筒体と、
該筒体の先端部に取り付けられた、前記ディスクの外周を小スキマを隔てて取り囲むフランジと、
該フランジの先に設けられた、筒状のメッシュ部材と、
を具備し、
前記ディスクを液中で回転させ、遠心力により該ディスク下面の液を外方向に流し、この液の流れによって前記ディスクとフランジとのスキマから前記筒体内の気体を吸い出しながら前記液と混合させて気泡混合液流を作り、この液流を前記メッシュ部材に当てて通しながら気泡を細分化することを特徴とする微細気泡発生装置。 A motor,
A rotating shaft rotated by the motor;
A rotating disk attached to the tip of the rotating shaft;
A cylinder having a gas inlet, surrounding the outer periphery of the rotating shaft with a space;
A flange attached to the tip of the cylindrical body and surrounding the outer periphery of the disk with a small gap;
A cylindrical mesh member provided at the tip of the flange;
Comprising
The disk is rotated in the liquid, the liquid on the lower surface of the disk is caused to flow outward by centrifugal force, and the liquid is mixed with the liquid while sucking out the gas in the cylinder from the gap between the disk and the flange. A fine bubble generating apparatus characterized in that a bubble mixed liquid flow is formed and bubbles are subdivided while passing the liquid flow through the mesh member. 前記メッシュ部材が、重ねられた複数のメッシュ網であることを特徴とする請求項１記載の微細気泡発生装置。   2. The fine bubble generating apparatus according to claim 1, wherein the mesh member is a plurality of mesh nets stacked. 前記メッシュ網の開口サイズが、５０〜５００メッシュであることを特徴とする請求項２記載の微細気泡発生装置。   The fine bubble generator according to claim 2, wherein the mesh net has an opening size of 50 to 500 mesh. 液中に回転ディスクを置いて該ディスクに触れる液に遠心力による流れを与え、
この流れ中に気体を混入させて気泡混入液流を作り、
該気泡混入液流をメッシュ部材に当てて通しながら気泡を細分化することを特徴とする微細気泡発生方法。 A rotating disk is placed in the liquid, and a centrifugal force is applied to the liquid that touches the disk.
Gas is mixed in this flow to create a bubble-containing liquid flow,
A method of generating fine bubbles, wherein the bubbles are subdivided while the bubble mixed liquid flow is applied to a mesh member. モータと、
該モータによって回転される回転軸と、
該回転軸の先端に取り付けられた回転ディスクと、
前記回転軸の外周をスペースをおいて取り囲む、空気導入口を有する筒体と、
該筒体の先端部に取り付けられた、前記ディスクの外周を小スキマを隔てて取り囲むフランジと、
該フランジの先に設けられた、筒状のメッシュ部材と、
を具備し、
前記ディスクを水中で回転させ、遠心力により該ディスク下面の水を外方向に流し、この水の流れによって前記ディスクとフランジとのスキマから前記筒体内の空気を吸い出しながら前記水と混合させて気泡混合液流を作り、この液流を前記メッシュ部材に当てて通しながら気泡を細分化して微細気泡を発生させ、この微細気泡により、前記水中の塩素分を除去することを特徴とする水中塩素分除去装置。 A motor,
A rotating shaft rotated by the motor;
A rotating disk attached to the tip of the rotating shaft;
A cylinder having an air inlet, surrounding the outer periphery of the rotating shaft with a space;
A flange attached to the tip of the cylindrical body and surrounding the outer periphery of the disk with a small gap;
A cylindrical mesh member provided at the tip of the flange;
Comprising
The disk is rotated in water, the water on the lower surface of the disk is caused to flow outward by centrifugal force, and the water is mixed with the water while sucking out the air in the cylinder from the gap between the disk and the flange. A mixed liquid flow is created, fine bubbles are generated by subdividing the bubbles while passing the liquid flow through the mesh member, and the chlorine content in the water is removed by the fine bubbles. Removal device.
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