CN112261991B - Microbubble liquid production device, microbubble liquid production method, and ozone microbubble liquid - Google Patents
Microbubble liquid production device, microbubble liquid production method, and ozone microbubble liquid Download PDFInfo
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- CN112261991B CN112261991B CN201980038961.2A CN201980038961A CN112261991B CN 112261991 B CN112261991 B CN 112261991B CN 201980038961 A CN201980038961 A CN 201980038961A CN 112261991 B CN112261991 B CN 112261991B
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- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
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Abstract
Provided are a fine bubble liquid production device, a fine bubble liquid production method, and a fine bubble liquid produced by the fine bubble liquid production method, wherein the fine bubble liquid production device can be used for installing or fixing a nozzle with a simplified structure, and the arrangement and/or specification of the nozzle can be easily adjusted or changed. An apparatus for producing a fine bubble liquid according to one embodiment of the present invention is characterized by comprising: an inlet mechanism, a raw liquid circulation mechanism, a gas supply mechanism, a plurality of nozzles and an outlet mechanism, wherein the plurality of nozzles are arranged in a direction crossing the raw liquid circulation mechanism in a replaceable manner, at least one nozzle in the plurality of nozzles is a nozzle selected from a plurality of types of nozzles prepared in advance, and fine bubble liquid containing fine bubbles with a predetermined particle diameter is manufactured according to the specifications of the nozzles.
Description
Technical Field
The present invention relates to a fine bubble liquid production apparatus, a fine bubble liquid production method, and a fine bubble liquid produced by the fine bubble liquid production method.
Background
In recent years, techniques using fine bubble liquids have been attracting attention. Liquids containing fine bubbles are increasingly expected to find application in various applications such as fuel reforming, semiconductor cleaning, sewage purification, sterilization or disinfection, and in organisms.
Patent document 2 discloses an apparatus for producing nanobubble hydrogen water for beverage by injecting a high-pressure fluid into a raw liquid to be treated (tap water or the like).
Patent document 3 describes a method for producing a bactericide by passing an inorganic aqueous solution mixed with ozone through a bubble generating nozzle to generate microbubbles.
In the present specification, bubbles having a diameter of 10 μm to several tens of μm are referred to as microbubbles, bubbles having a diameter of several hundreds of nm to 10 μm are referred to as micro-nano bubbles, and bubbles having a diameter of several hundreds of nm or less are referred to as nano bubbles, and these bubbles are collectively referred to as micro-bubbles.
Prior art literature
Patent literature
Patent document 1: japanese patent No. 4274327
Patent document 2: japanese patent No. 5566175
Patent document 3: international publication No. 2016/021523
Disclosure of Invention
Technical problem
In the fuel manufacturing apparatus disclosed in patent document 1, as shown in fig. 8, an emulsified fuel is obtained by injecting fuel at high pressure from a plurality of nozzles into a fuel base. However, in the fuel manufacturing apparatus disclosed in patent document 1, since the arrangement of the nozzles and the specifications of the nozzles are fixed, the range of particle diameters of fine bubbles that can be generated is limited.
In the nanobubble hydrogen water production apparatus disclosed in patent document 2, as shown in fig. 9, at least one first nozzle 204 vertically fixed to the main pipe 202 and at least one second nozzle 206 attached to the main pipe 202 in an inclined state are provided, and a part of the high-pressure liquid introduced into the pressurized liquid supply space 208 is injected toward the fluid 210 flowing through the first nozzle 204 in the main pipe 202, and the other part is injected toward the fluid 210 flowing through the second nozzle 206 in the main pipe 202.
According to the nano-bubble hydrogen water production apparatus 200 disclosed in patent document 2, since the high-pressure liquid ejected from the second nozzle 206 is ejected toward the outlet side (arrow side in fig. 9) in the main pipe 202, the high-pressure liquid has an action of strengthening the direction of the outlet side to the liquid flowing in the main pipe 202, and thus the production efficiency of the nano-bubble hydrogen water is improved. However, since the second nozzle 206 is mounted to the main pipe 202 in an inclined state, there is a problem in that the structure of the main pipe 202 becomes complicated. Further, as in the device disclosed in patent document 1, since the arrangement of the nozzles and the specifications of the nozzles are fixed, the range of particle diameters of fine bubbles that can be generated is limited.
In the method for producing a bactericide disclosed in patent document 3, although micro bubbles are generated by the bubble generating nozzle, there is a problem in that the structure of the valve generating nozzle is complicated. Further, as in the devices disclosed in patent document 1 and patent document 2, since the nozzle arrangement and the specifications of the nozzles are fixed, the range of particle diameters of fine bubbles that can be generated is limited.
In this way, in the conventional fine bubble liquid manufacturing apparatus and fine bubble liquid manufacturing method, since the structure for attaching or fixing the nozzle is complicated and the arrangement of the nozzle and the specification of the nozzle are fixed, the range of the particle diameter of fine bubbles used in the fine bubble liquid manufacturing apparatus is limited, and the fine bubble liquid manufacturing apparatus and fine bubble liquid manufacturing method have no versatility, and a dedicated fine bubble liquid manufacturing apparatus and fine bubble liquid manufacturing method are adopted depending on the application and purpose.
The present invention aims to provide a fine bubble liquid manufacturing device, a fine bubble liquid manufacturing method, and a fine bubble liquid manufactured by the fine bubble liquid manufacturing method, which can be used for installing or fixing a nozzle in a simple structure, can easily adjust or change the arrangement and/or specification of the nozzle, and can manufacture fine bubble liquid containing fine bubbles with a desired particle size corresponding to the application or purpose.
Technical proposal
The fine bubble liquid manufacturing apparatus according to claim 1 of the present invention is characterized by comprising:
an inlet mechanism that supplies pressurized raw liquid;
A raw liquid circulation mechanism for circulating the pressurized raw liquid;
a gas supply mechanism for supplying gas to the raw liquid circulation mechanism;
a plurality of nozzles provided along the raw liquid circulation mechanism and having injection holes for injecting the pressurized raw liquid supplied from the inlet mechanism; and
an outlet means for taking out the generated fine bubble liquid from the outlet of the raw liquid flow means,
the plurality of nozzles are replaceably mounted in a direction intersecting the original liquid flow mechanism,
at least one nozzle of the plurality of nozzles is a nozzle selected from a plurality of types of nozzles prepared in advance,
a fine bubble liquid containing fine bubbles of a predetermined particle diameter is produced based on at least one of the specifications of the nozzles, the arrangement of the nozzles, the number of the nozzles, the pressure of the raw liquid supplied from the inlet mechanism, the supply amount of the raw liquid determined by a pressurizing mechanism for supplying the raw liquid to the inlet mechanism, the number of times the raw liquid is circulated by the pressurizing mechanism, the pressure of the gas supply mechanism, and the supply amount of the gas determined by the gas supply mechanism. In the present invention, a liquid prepared by using fine bubbles is referred to as a fine bubble liquid (hereinafter, the same applies).
In the fine bubble liquid manufacturing apparatus according to claim 2 of the present invention, in the fine bubble liquid manufacturing apparatus according to claim 1, a plurality of the nozzles are provided in a circumferential direction and/or a longitudinal direction of the raw liquid flow mechanism.
In the fine bubble liquid manufacturing apparatus according to claim 3 of the present invention, in the fine bubble liquid manufacturing apparatus according to claim 1 or 2, the injection hole of at least one of the plurality of nozzles is inclined toward the downstream side.
In the fine bubble liquid manufacturing apparatus according to claim 4, in any one of claims 1 to 3, a plurality of the nozzles are provided in the circumferential direction of the raw liquid flow mechanism, a plurality of the rows of the nozzles are also provided in the longitudinal direction of the raw liquid flow mechanism, and the positions of the injection holes of the nozzles in the rows adjacent in the longitudinal direction are shifted in the circumferential direction.
In the fine bubble liquid manufacturing apparatus according to claim 5, in any one of claims 1 to 4, the gas supply means is coaxial with the raw liquid flow means and is provided inside the raw liquid flow means so as to extend in the longitudinal direction of the raw liquid flow means.
In addition, in the fine bubble liquid manufacturing apparatus according to claim 6, in any one of claims 1 to 5, at least one of a spray angle of the nozzle in a circumferential direction with respect to the raw liquid circulation mechanism, a spray angle in a longitudinal direction with respect to the raw liquid circulation mechanism, a position of a spray hole of the nozzle, a diameter of the spray hole, a length of the spray hole, an inclination angle of a transition hole portion provided on an upstream side of the spray hole, and a diameter of a hole on an upstream side of the spray hole is different from each other.
In addition, in the fine bubble liquid manufacturing apparatus according to claim 7, in any one of claims 1 to 6, the type of the specification of the nozzle is set by a nozzle capable of adjusting the injection hole.
In addition, in the fine bubble liquid manufacturing apparatus according to claim 8, in the fine bubble liquid manufacturing apparatus according to claim 7, the injection direction of the injection hole of the injection nozzle of the injection hole can be adjusted.
In addition, in the fine bubble liquid manufacturing apparatus according to claim 9 of the present invention, in the fine bubble liquid manufacturing apparatus according to claim 7 or 8, the nozzle capable of adjusting the injection hole has a rotation mechanism capable of rotating a center line of the injection hole with respect to a center line of the nozzle, and the injection hole includes a through hole penetrating the rotation mechanism and communicating with an inside of the nozzle, and a direction of the center line of the injection hole can be adjusted by changing a rotation angle of the rotation mechanism.
In addition, in the fine bubble liquid manufacturing apparatus according to claim 10 of the present invention, in the fine bubble liquid manufacturing apparatus according to claim 9, the through hole includes: a cylindrical large-diameter opening portion communicating with the raw liquid circulation mechanism provided in the nozzle; a cone-shaped opening portion provided in the rotation mechanism and connected to the large-diameter opening portion, a cylindrical intermediate-diameter opening portion connected to a top portion of the cone-shaped opening portion and having a smaller diameter than the large-diameter opening portion, and a transition opening portion connected to the intermediate-diameter opening portion and having a sequentially smaller diameter; a cylindrical injection hole having a smaller diameter than the intermediate diameter hole, the injection hole being connected to the transition hole and formed at a tip end of the injection part, wherein a maximum diameter of the conical hole is larger than a diameter of the large diameter hole, and the maximum diameter of the conical hole is not directly exposed in the large diameter hole when the rotation mechanism is rotated.
In addition, in the fine bubble liquid manufacturing apparatus according to claim 11, in any one of claims 1 to 10, the nozzle can be replaced in units of units.
In addition, in the fine bubble liquid manufacturing apparatus according to claim 12 of the present invention, in any one of claims 1 to 11, a spiral groove is provided in the injection hole and/or an inner surface on an upstream side of the injection hole.
Further, in the fine bubble liquid manufacturing apparatus according to claim 13 of the present invention, in the fine bubble liquid manufacturing apparatus according to any one of claims 1 to 12, the fine bubbles include at least one of microbubbles, and nanobubbles.
In the fine bubble liquid manufacturing apparatus according to claim 14 of the present invention, in the fine bubble liquid manufacturing apparatus according to any one of claims 1 to 13, the raw liquid is at least one of water, an aqueous solution, and a fuel.
In the fine bubble liquid manufacturing apparatus according to claim 15 of the present invention, in the fine bubble liquid manufacturing apparatus according to claim 14, the fuel includes at least one selected from the group consisting of gasoline, light oil, heavy oil, kerosene, and ethanol.
In the fine bubble liquid manufacturing apparatus according to claim 16, in the fine bubble liquid manufacturing apparatus according to any one of claims 1 to 15, the gas includes at least any one of oxygen, ozone, hydrogen, nitrogen, air, and a gas generated by electrolysis of water.
Further, in the fine bubble liquid manufacturing apparatus according to claim 17 of the present invention, in any one of claims 1 to 16, the raw liquid is an aqueous solution containing 4% or more of bittern, the gas is ozone, and the fine bubble liquid manufacturing apparatus is configured to manufacture an ozone fine bubble liquid having an ozone concentration of 40ppm or more.
In addition, in the method for producing a fine bubble liquid according to claim 18 of the present invention, the method for producing a fine bubble liquid uses:
an inlet mechanism that supplies pressurized raw liquid;
a raw liquid circulation mechanism for circulating the pressurized raw liquid;
a gas supply mechanism for supplying gas to the raw liquid circulation mechanism;
a plurality of nozzles provided along the raw liquid circulation mechanism and having injection holes for injecting the pressurized raw liquid supplied from the inlet mechanism; and
an outlet means for taking out the generated fine bubble liquid from the outlet of the raw liquid flow means,
the plurality of nozzles are replaceably mounted in a direction intersecting the original liquid flow mechanism,
a plurality of types of nozzles are prepared as the nozzles,
At least one nozzle of the plurality of nozzles is selected from the previously prepared nozzles,
a fine bubble liquid containing fine bubbles of a predetermined particle diameter is produced based on at least one of the specifications of the selected nozzles, the arrangement of the nozzles, the number of the nozzles, the pressure of the raw liquid supplied from the inlet mechanism, the supply amount of the raw liquid determined by a pressurizing mechanism for supplying the raw liquid to the inlet mechanism, the number of times the raw liquid is circulated by the pressurizing mechanism, the pressure of the gas supply mechanism, and the supply amount of the gas determined by the gas supply mechanism.
The fine bubble liquid according to claim 19 of the present invention is characterized in that the fine bubble liquid according to claim 18 is produced by a fine bubble liquid production method, and the particle size of fine bubbles can be adjusted according to the specifications of the nozzle.
In the fine bubble liquid according to claim 20, in the fine bubble liquid according to claim 19, the raw liquid is water, and the gas includes at least one of oxygen, ozone, hydrogen, nitrogen, carbon dioxide, air, a gas generated by electrolysis of water, and oxyhydrogen.
The ozone fine bubble liquid according to claim 21 of the present invention is characterized in that it is produced by generating ozone fine bubbles containing nanobubbles in a raw liquid containing 4% or more of bittern, has an ozone concentration of 40ppm or more, and has a bactericidal effect.
Technical effects
According to the fine bubble liquid production apparatus and the fine bubble liquid production method of the present invention, a simple structure for attaching or fixing the nozzle can be obtained, and the arrangement and/or specification of the nozzle can be adjusted or changed, so that the fine bubble liquid production apparatus, the fine bubble liquid production method, and the fine bubble liquid containing fine bubbles of a desired particle size can be produced. The particle size of the fine bubble liquid to be produced can be adjusted by at least one of the specification of the nozzles, the arrangement of the nozzles, the number of the nozzles, the pressure of the raw liquid supplied from the inlet mechanism, the supply amount of the raw liquid obtained by the pressurizing mechanism for supplying the raw liquid to the inlet mechanism, the number of times the raw liquid is circulated by the pressurizing mechanism, the pressure of the gas supply mechanism, and the supply amount of the gas determined by the gas supply mechanism.
Drawings
Fig. 1 is a block diagram of a fine bubble liquid manufacturing apparatus that is common to the embodiments.
Fig. 2A is a schematic cross-sectional view of a fine bubble generating portion common to the embodiments, and fig. 2B is an enlarged cross-sectional view of the IIB portion of fig. 2A.
Fig. 3A is an enlarged bottom view of the nozzle 108 on one side of fig. 2A, and fig. 3B is a sectional view of fig. 3A taken along the direction IIIB-IIIB.
Fig. 4 is an enlarged sectional view of the nozzle 110 of the other side of fig. 2A.
Fig. 5 is a V-V sectional view of fig. 2A for embodiment 2.
Fig. 6A is a bottom view of the nozzle 160 of embodiment 3, fig. 6B is a cross-sectional view of VIB-VIB of fig. 6A, fig. 6C is a bottom view of the nozzle 160A of other specifications of embodiment 3, fig. 6D is a cross-sectional view of VID-VID of fig. 6C, fig. 6E is a bottom view of the nozzle 160B of another other specification of embodiment 3, and fig. 6F is a cross-sectional view of VIF-VIF of fig. 6E.
Fig. 7 is a schematic cross-sectional view of the unit of embodiment 4.
Fig. 8 is a schematic cross-sectional view of a fine bubble generating portion according to a conventional example.
Fig. 9 is a schematic enlarged sectional view of a nozzle fixing portion of a conventional example.
Symbol description
12 … storage tank of 10 … micro bubble liquid manufacturing device
14 … circulating piping 16 … high-pressure pump
18 … introduction connection pipe 20 … process gas generating portion
22 … discharge connection pipe 24 … collecting pipe
26 … low pressure pump 28 … supply piping
29 … product storage tank 100 … micro-bubble generating part
102a … female thread of 102 … main pipe
102b … male thread 104 … pressure reducing pipe
106 … discharge tube 108,110 … nozzle
108a,110a … nozzle outer cylinder 108b,110b … opening portions
108c,110c … flanges 108d,110d …, cone-like notched holes
108e,110e … nozzle body fixing openings 108f,110f … nozzle body
108g,110g … spherical rotary portions 108h,110h … injection portions
108i,110i … cylindrical openings 108j,110j … injection holes
108k,110k … cone-shaped openings 108m,110m … end portions
108n,110n … transition bore portions 108p,110p … nut members
108q,110q … relief 108r,110r … fixing groove
108s,110s … male threaded portion 112 … rod member
114 … gas nozzle 116 … container parts
118 … outer cylinder 120 … space
122 … stop screw 124 … spray hole
126 … hollow rod with 128 … circulating space
130 … solid bar 136 … hollow portion
138 … tube 140 … side wall
142,143, … through-holes 144 … O-ring
146 … pipe 148 … bolt
150 … O-ring 160,160A,160B … nozzle
160a … nozzle cartridge 160b … flange
160c … fixing groove 160d … male screw portion
160e … relief 160f … openings
160g … transitional opening 160h … injection hole
160i … injection part 200 … nanometer bubble hydrogen water manufacturing device
202 … main pipeline 204 … first nozzle
206 … second nozzle 208 … pressurized liquid supply space
210 … fluid
Detailed Description
Hereinafter, a fine bubble liquid manufacturing apparatus and a fine bubble liquid manufacturing method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments described below are examples of the fine bubble liquid manufacturing apparatus and the fine bubble liquid manufacturing method for embodying the technical idea of the present invention, and the present invention is not limited to these embodiments, and can be similarly applied to other embodiments included in the claims.
The general configuration of the fine bubble liquid manufacturing apparatus 10 common to the embodiments will be described with reference to fig. 1. Fig. 1 is a block diagram of a fine bubble liquid manufacturing apparatus that is common to the embodiments.
The fine bubble liquid manufacturing apparatus 10 common to the embodiments includes a storage tank 12, a fine bubble generating unit 100, and a process gas generating unit 20. The storage tank 12 is a container for storing the fine bubble liquid in the production process until a desired fine bubble concentration is reached, and may be a closed container or an open container depending on the characteristics of the fine bubble liquid. In the case of using a closed vessel, a predetermined pressure may be applied to the storage tank 12 as needed.
Such a storage tank 12 is used because, when the desired fine bubble concentration is high, the liquid to be treated is passed through the fine bubble generating portion 100 only once and the desired fine bubble concentration cannot be achieved, the liquid to be treated is circulated through the fine bubble generating portion 100 a predetermined number of times, thereby achieving the desired fine bubble concentration. Here, the number of times the liquid to be treated is circulated through the fine bubble generating portion 100 is converted by dividing the amount of the liquid to be treated stored in the storage tank 12 by the time of the supply amount of the liquid to be treated determined by the high-pressure pump 16. The time obtained by dividing the amount of the treatment liquid stored in the storage tank 12 by the supply amount of the treatment liquid determined by the high-pressure pump 16 corresponds to one of the times of circulating the treatment liquid through the fine bubble generating portion 100. A time corresponding to one of the times of circulating the liquid to be treated through the fine bubble generating section 100 is set to, for example, several tens of minutes to several hours. When the desired fine bubble concentration is low, the storage tank 12 is not necessarily required only when the liquid to be treated passes through the fine bubble generating section 100 once to reach the desired fine bubble concentration.
The liquid to be treated, which is initially injected into the reservoir tank 12, is pressurized by the high-pressure pump 16 via the circulation pipe 14 and is supplied to the fine bubble generating portion 100 via the introduction connection pipe 18. Although not particularly limited as the high-pressure pump 16, for example, a diaphragm pump may be used. The supply amount determined by the high-pressure pump is set to a level of, for example, 2 to 20L/min, and preferably 5 to 10L/min. The liquid to be treated is pressurized by the high-pressure pump 16 to a level of, for example, 1MPa to 100MPa, preferably to a level of, for example, 3MPa to 40 MPa. The pressure of the high-pressure pump 16 is preferably set so that the particle size and/or concentration of the fine bubbles can be adjusted by pressurizing the fine bubbles to a higher pressure so as to reduce the particle size of the fine bubbles. In addition, by setting the supply amount determined by the high-pressure pump 16, the particle size and/or concentration of the fine bubbles can be adjusted. Although the driving source of the diaphragm pump is not particularly limited, a motor of the order of, for example, 1.0kW to 5.5kW, for example, a three-phase 200V motor, may be used.
The gas to be finely bubbled generated by the process gas generating section 20 is supplied to the fine bubble generating section 100, and a fine bubble liquid in which the finely bubbled gas is dispersed in the liquid to be processed is prepared. The gas generated by the process gas generating section 20 is supplied to the fine bubble generating section 100 at a pressure of, for example, 1MPa or less, preferably, about 0.2MPa to 0.5MPa, or is supplied to the fine bubble generating section 100 by the self-attractive force of the venturi shape. The amount of the gas to be supplied may be about 0.5 to 5L/min, for example, about 1L/min. The particle size and/or concentration of the fine bubbles can also be adjusted by setting the supply pressure of the gas and/or the supply amount of the gas.
The obtained fine bubble liquid is returned to the storage tank 12 through the discharge connection pipe 22. This operation is continuously circulated until the concentration of fine bubbles in the fine bubble liquid in the storage tank 12 reaches a desired concentration. That is, the concentration of the fine bubble liquid can be adjusted by adjusting the circulation process. After the concentration of fine bubbles in the fine bubble liquid in the storage tank 12 reaches a desired concentration, the fine bubble liquid in the storage tank 12 is collected by the collection pipe 24 and the low pressure pump 26, and is supplied to the product storage tank 29 via the supply pipe 28. The fine bubble liquid supplied to the product storage tank 29 is subjected to a test step, a container packaging step, and the like, and then is marketed as a product.
The inner side of each pipe, the storage tank, and the portion where the liquid of each pump contacts, and the portion where the liquid of the fine bubble generating portion contacts, are preferably covered with, for example, a fluororesin. This can prevent the liquid to be treated from being mixed with impurities such as rust. Specifically, each part is entirely formed of a fluororesin, or each part has an inner surface entirely formed of a fluororesin or is covered with a fluororesin. As the fluororesin, for example, polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (PCTFE), perfluoroalkoxy Fluororesin (PFA), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), ethylene-tetrafluoroethylene copolymer (ETFE), ethylene-chlorotrifluoroethylene copolymer (ECTFE), and the like can be used. Among them, polytetrafluoroethylene (PTFE) is preferable. Thus, since elution of metal ions and/or mixing of foreign matter can be prevented, even when the cleaning agent is used for, for example, semiconductor cleaning, cleaning water having high cleanliness can be obtained.
Next, a specific configuration of the fine bubble generating portion 100 will be described with reference to fig. 2A and 2B. Fig. 2A is a schematic cross-sectional view of the fine bubble generating unit 100 of fig. 1. Fig. 2B is an enlarged sectional view of the IIB portion of fig. 2A. Although not particularly limited, water is used as an example of the liquid to be treated.
The fine bubble generating portion 100 is mainly composed of: the main pipe 102 having a cylindrical shape and having a flow path for flowing water therein, the drain pipe 106 for flowing water from the main pipe 102, the plurality of nozzles 108,110 penetrating around the main pipe 102 for jetting water to the inside of the main pipe 102, the stem member 112 provided in the main pipe 102 to be a wall against which the jetted water impinges or to jet out gas for making fine bubbles, the gas nozzle 114 for feeding the gas to the stem member 112, and the container member 116 for covering and holding the main pipe 102. The water not discharged from the main pipe 102 to the discharge pipe 106 is discharged from the pressure reducing pipe 104 to which a pressure reducing valve, not shown, is connected. The gas for forming fine bubbles may be appropriately selected according to the application, and hydrogen, air, a gas generated by electrolysis of water, or even oxyhydrogen, oxygen, ozone, nitrogen, carbon dioxide, or the like (including a mixture gas). For example, when hydrogen, air, oxygen, carbon dioxide, or the like is used as a gas for forming fine bubbles, the gas can be used for beverages. In addition, for example, when ozone, carbon dioxide, or the like is used as a gas for forming fine bubbles, the gas can be used for cleaning purposes, or the like.
The main pipe 102 is a circular pipe having a relatively thick wall and is formed by cutting using, for example, a metal material. The main pipe 102 is provided with a recess over the entire circumference at a central portion at the outer circumference in the longitudinal direction, and a space 120 is formed between the main pipe 102 and an outer cylinder 118 described later that covers the outer circumference of the main pipe 102. A group of three nozzles 108,110 are provided in each group at positions spaced apart from each other by approximately 120 degrees, for example, in the circumferential direction from the concave portion of the main pipe 102 toward the inner periphery and at positions such as 6 in the center line direction of the main pipe 102, respectively. That is, in each embodiment, 3×6 groups=18 nozzles 108,110 are provided. Each nozzle 108,110 has a male screw portion formed around the circumference thereof, and is screwed in a sealed state with a corresponding female screw portion provided in the main pipe 102. The circumferential positions of one set of nozzles are offset from an adjacent set of nozzles by, for example, about 60 degrees. The arrangement of the nozzles is schematically shown in a circular or oval drawing at the portion corresponding to the flow space 126 in fig. 2.
Among them, the 3 nozzles 110 as 1 group located closest to the pressure reducing pipe 104 side are also screwed from the space 120 perpendicularly toward the center line of the main pipe 102 as with the other nozzles 108, but since the injection portion 110h is provided inclined at a predetermined injection angle θ with respect to the center line of the circulation space 126 1 (refer to fig. 4), the liquid ejected by the nozzles 110 is ejected obliquely in the traveling direction of the liquid with respect to the axis of the main pipe 102. Although the mounting angles of the nozzles 108 and 110 are set to be perpendicular to the center line of the main pipe 102 from the viewpoint of simplifying the mounting structure, the present invention is not limited to mounting all of the nozzles 108 and 110 perpendicular to the center line of the main pipe 102, and one or more of the nozzles 108 and 110 may be inclined from the upstream side of the flow space 126 to be described later to the upstream side as requiredArranged in the downstream direction. In addition, although the injection angle θ 1 The angle may be appropriately set, but may be, for example, about 45 ° to 75 °, for example, about 60 °.
Although the specific structure of these nozzles 108,110 will be described later, the apertures of these nozzles 108,110 need not be the same. For example, at least one of the nozzles 108 and 110 may have a different caliber than the other nozzles. The water may be supplied from another pressurizing mechanism to the nozzles having different diameters. The set pressure of the pump as the pressurizing mechanism in this case is set to a predetermined pressure, and the set pressure may be the same pressure as the other set pressure or may be a pressure different from the other set pressure.
The lever member 112 is a rod-shaped member, and is housed inside the main pipe 102 so that its center line substantially coincides with the center line of the main pipe 102. The lever member 112 has a longer dimension than the main pipe 102, and is inserted such that both ends thereof protrude from both end surfaces of the main pipe 102. The stem member 112 has an outer diameter that is thinner than the inner diameter of the main conduit 102. The stem member 112 is disposed in the inner space of the main pipe 102 by a plurality of stopper screws 122 in the drain pipe 106 and the pressure reducing pipe 104, respectively, such that the center line of the main pipe 102 substantially coincides with the center line of the stem member 112. Accordingly, a flow space 126 is formed around the stem member 112 between the main pipe 102 and the stem member 112, and the flow space 126 is for flowing water of an extent of 2 to 6mm in a range of, for example, approximately 20 times or less the caliber of the ejection hole 124 (the ejection hole for injecting the gas from the stem member 112. Refer to fig. 2 b.).
In addition, the rod member 112 is composed of an elongated hollow rod 128 and a solid rod 130 having substantially the same outer diameter dimension. In fig. 2A, the hollow portion 136 of the hollow rod 128 is schematically depicted by a broken line, not by a cross-sectional view, but by a broken line for the hollow rod 128 and the solid rod 130. The hollow rod 128 and the solid rod 130 are screwed in a sealed state by a female screw portion 132 (see fig. 2B) at the tip of the hollow rod 128 and a male screw portion 134 (see fig. 2B) at the tip of the solid rod 130. In this coupled state, the hollow bar 128 is disposed on the upstream side (right side in fig. 2A and 2B) of the water flow in the main pipe 102, and the solid bar 130 is disposed on the downstream side (left side in fig. 2A and 2B) of the water flow in the main pipe 102. The hollow rod 128 is a cylindrical rod having a hollow portion 136 along its center line and is used with the bottom side facing the upstream side (right side in fig. 2). These main pipe 102 and the lever member constitute the raw liquid circulation mechanism of the present invention. In the present embodiment, the hollow rod 128 and the solid rod 130 are formed as separate bodies and are integrated by the female screw portion 132 and the male screw portion 134, but the present invention is not limited thereto, and for example, the hollow rod 128 and the solid rod 130 may be integrally formed.
Further, a female screw portion 132 is provided on the open end side of the hollow rod 128, and is screwed with a male screw portion 134 of the solid rod 130. The hollow rod 128 has a through hole 142 formed in a bottom side thereof so as to be substantially perpendicular to a center line thereof, and a female screw for pipe is provided on an inner periphery of the through hole 142. The gas nozzle 114, which has a male screw for pipe provided at its tip, is screwed into the female screw for pipe in a sealed state, wets the gas supplied from the process gas generating portion, and then supplies the wetted gas to the hollow portion 136 through the pipe 138. The hollow rod 128 is configured such that a plurality of small-diameter discharge holes 124 are provided in the open end side of the female screw portion 132, which is not provided in the cylindrical portion, so that the humidified gas in the hollow portion 136 is discharged into the water in the flow space 126 and can be bubbled. The solid bar 130 is a round bar, and the male screw portion 134 thereof is engaged with the hollow bar 128 toward the upstream side (right side in fig. 2A and 2B). The male screw portion 134 is provided in a cylinder protruding from the distal end of the solid rod 130, and is screwed into the female screw portion 132.
The gas nozzle 114 is connected to the process gas generating portion 20 (see fig. 1) via a pipe 138, and is configured to be capable of delivering gas to the hollow portion 136 of the hollow rod 128.
Although the relief pipe 104 has substantially the same inner diameter as the main pipe 102, the relief pipe 104 is a short pipe having an outer diameter smaller than the main pipe 102, and pipe male screws are provided at outer circumferences of both ends, respectively. The pipe is screwed in a sealed state with a female screw provided in a side wall 140 described later, whereby one end of the pressure reducing pipe 104 is connected to the main pipe 102. A through hole 143 is provided in the central portion of the pressure reducing pipe 104 in the longitudinal direction, and passes through the gas nozzle 114 substantially perpendicularly from the outer peripheral surface of the pressure reducing pipe 104 toward the center thereof. The through hole 143 is provided with a female screw for pipe, and the gas nozzle 114 provided with a male screw for pipe at its tip penetrates the pressure reducing pipe 104 in a sealed state, and is connected to the hollow rod 128.
Further, in the pressure reducing pipe 104, a plurality of small-diameter stopper holes (not shown) are provided on the outer peripheral surface of the through hole 142 on the right side in fig. 2A so as to be substantially perpendicular to and substantially opposed to each other toward the center line of the pressure reducing pipe 104, and a female pipe screw is provided in the stopper holes. The rod member 112 is supported by screwing the set screw 122 fitted into the female screw of the tube in a sealed state, and the set screw 122 is abutted against the hollow rod 128 from a plurality of directions. In each of the embodiments described below, a pressure reducing valve, not shown, is provided in the pressure reducing pipe 104, and water that is not discharged from the circulation space 126 to the discharge pipe 106 is discharged. In addition, the solid bar 130 is not necessary, and in the absence of the solid bar 130, the downstream side of the hollow bar 128 is closed.
The discharge pipe 106 has substantially the same shape and substantially the same structure as the pressure reducing pipe 104. That is, although the discharge pipe 106 has substantially the same inner diameter as the main pipe 102 and the relief pipe 104, the discharge pipe 106 is a short pipe having an outer diameter smaller than that of the main pipe 102, and pipe male screws are provided at outer circumferences of both ends, respectively. The pipe is screwed in a sealed state with a female screw provided in a side wall 140 described later, whereby one end of the discharge pipe 106 is connected to the main pipe 102. The other end of the discharge pipe 106 is connected to the storage tank 12 (see fig. 1) storing water on the downstream side via a discharge connection pipe 22 (see fig. 1). Further, a plurality of small-diameter stopper holes (not shown) are formed in the discharge pipe 106 from the outer peripheral surface so as to be substantially perpendicular to and substantially opposite to the center line of the discharge pipe 106, and a female pipe screw (not shown) is provided in the stopper holes. The set screw 122 is screwed into the female screw of each tube in a sealed state, whereby the set screw 122 is brought into contact with the solid rod 130 from a plurality of directions to support the rod member 112.
The container member 116 is mainly composed of a tubular outer tube 118 that closely covers the outer periphery of the main tube 102, and a pair of side walls 140 that block both ends of the outer tube 118 that houses the main tube 102. The outer tube 118 has a length of the same extent as the main tube 102 and has an inner diameter slightly larger than the outer diameter of the main tube 102. When the main pipe 102 is housed in the outer tube 118, grooves are provided at both ends of the outer peripheral portion of the main pipe 102 so as to sandwich the space 120, and O-rings 144 are inserted into the grooves, respectively, for sealing connection.
A hole is formed in the outer peripheral portion of the outer tube 118 in a direction substantially perpendicular to the center line thereof, and a tube 146 for supplying water to the space 120 formed between the main tube 102 is connected in a sealed state. The water supplied from the pipe 146 to the space 120 is configured not to leak outside by the above-described inserted O-ring 144 or the like. The water supplied from the pipe 146 is split in the closed space 120 and flows to the nozzles 108 and 110. Therefore, the pipe 146 is not connected to the nozzles 108 and 110 by piping alone, and thus can be connected to the plurality of nozzles 108 and 110 with a simple structure.
Further, a plurality of screw holes are provided at both end surfaces of the outer tube 118 accommodating the main tube 102, and the side wall 140 is screwed to both end surfaces of the outer tube 118 by screwing the bolts 148 into the screw holes, thereby blocking both end surfaces of the outer tube 118. The side wall 140 is a substantially disk-shaped member that covers the entire side surface of the outer tube 118. A hole having substantially the same diameter as the pressure reducing pipe 104 or the discharge pipe 106 is formed in the center portion of the circle of the side wall 140. The hole is provided with a female screw for pipe, and a male screw provided in the pressure reducing pipe 104 or the discharge pipe 106 is screwed in a sealed state. The side wall 140 is provided with a through hole formed in the outer surface Zhou Bukai with a countersink formed around the periphery thereof, and is fastened to the outer tube 118 by screwing a bolt 148 passing through the through hole into a screw hole of the outer tube 118. Further, annular grooves are provided on the outer peripheral side of the flow space 126 at both end portions of the main pipe 102, and O-rings 150 are inserted therein, respectively. Therefore, the side wall 140 is hermetically covered on the side surface of the outer tube 118, so that water flowing through the flow space 126 of the main pipe 102 does not leak outside.
Next, a method of generating fine bubbles by the fine bubble generating unit 100 will be described. Water pressurized to, for example, 7MPa is fed from the pipe 146 into the space 120, and is ejected through the front end openings of the nozzles 108,110 protruding from the flow space 126 through the openings of the nozzles 108,110 on the space 120 side. The ejected water impinges in large amounts on the outer surface of the solid bar 130 or hollow bar 128. At this time, a predetermined gas having a pressure of, for example, 0.5MPa or less may be supplied from the gas nozzle 114 to the hollow portion 136 of the hollow rod 128. The injected gas is injected from the injection holes 124 into the water flowing through the flow space 126. Since the nozzle 110 located at the most upstream side (right side in fig. 2A) sprays water obliquely toward the downstream side, a water flow is generated from right to left in fig. 2A in the circulation space 126. Thus, the water containing fine bubbles is sent out from right to left. Here, in order to effectively generate fine bubbles, the thickness of the flow space 126 (the difference between the inner diameter of the main pipe 102 and the outer diameter of the solid rod 130 (radius difference)) can be appropriately adjusted.
The gas passing through the hollow rod 128 of the rod member 112 is injected from the injection hole 124 through the pipe 138 into the water flowing through the flow space 126, thereby bubbling. The bubbles generated here are swept to the downstream side while being miniaturized by the jet stream of water impinging on the hollow rod 128 or the solid rod 130 generated by the water ejected from the 3 nozzles 110 provided in the group on the most upstream side (the rightmost side in fig. 2A). The water containing bubbles that have been flushed to the downstream side is further miniaturized by the jet stream generated by the 3 nozzles 108 of the adjacent group of nozzles 110 that impinges on the hollow bar 128 or even the solid bar 130, and is flushed to the downstream side. By shifting the arrangement of the nozzles 110 by 60 degrees from the arrangement of the adjacent group of nozzles 108 as viewed in the circumferential direction of the main pipe 102, the generated bubbles are further miniaturized by generating a water flow such as stirring.
Next, the water containing bubbles that have been flushed to the downstream side is further miniaturized by the jet stream that impinges on the solid bar 130 generated by the 3 nozzles 108 of the adjacent group, and is flushed to the downstream side. By repeating such a process for 6 sets of nozzles 108,110, the fine bubbles are promoted, and the fine bubble water containing fine bubbles having a desired particle diameter is purified by at least one of the specifications of the nozzles, the arrangement of the nozzles, the number of nozzles, the pressure of the raw liquid supplied from the inlet means, the supply amount of the raw liquid obtained by the pressurizing means for supplying the raw liquid to the inlet means, the number of times the raw liquid is circulated by the pressurizing means, the pressure of the gas supply means, and the supply amount of the gas determined by the gas supply means, with respect to the water after the fine bubbles are miniaturized by the most downstream set of nozzles 108. That is, for example, even if only the specifications of the nozzles are changed, at least one of micro-bubbles, micro-nano-bubbles, and nano-bubbles, which are micro-bubbles, can be generated by adjusting the particle size and/or the concentration of the micro-bubbles, but in addition, by adjusting at least one of the arrangement of the nozzles, the number of the nozzles, the pressure of the raw liquid supplied from the inlet mechanism, the supply amount of the raw liquid obtained by the pressurizing mechanism for supplying the raw liquid to the inlet mechanism, the number of times of circulating the raw liquid by the pressurizing mechanism, the pressure of the gas supplying mechanism, and the supply amount of the gas determined by the gas supplying mechanism, the particle size and/or the concentration of the micro-bubbles can be set more appropriately by a combination thereof. The term "adjusting the particle diameter of the fine bubbles" also includes adjusting the distribution of the number of fine bubbles (for example, the number ratio of the micro bubbles, micro nano bubbles, and nano bubbles) corresponding to the particle diameter of the fine bubbles.
The structure of the nozzles 108 and 110 according to embodiment 1 will be described with reference to fig. 2 to 4. Embodiment 1 shows that the injection angle θ of the injection portion 108h of each of the nozzles 108 and 110 can be adjusted 1 (see FIG. 4) example.
Because the injection angle θ of the injection portions 108h of the nozzles 108 and 110 is only with respect to the center line of the flow space 126 1 Since the other parts have substantially the same structure, the description will be mainly made on the nozzle 108 as a representative part (see fig. 4). In the following, the same reference numerals 110a to 110n may be used for the same components of the nozzle 110 as the reference numerals 108a to 108n of the nozzle 108, as necessary, and detailed description thereof may be omitted. It should be noted that FIG. 2B isAn enlarged cross-sectional view of the IIB portion of fig. 2A. Fig. 3A is an enlarged bottom view of the nozzle 108 on one side of fig. 2A, and fig. 3B is a sectional view of fig. 3A taken along the direction IIIB-IIIB. Fig. 4 is an enlarged sectional view of the nozzle 110 of the other side of fig. 2A. These members constituting the nozzles 108 and 110 are not particularly limited, but are preferably formed of a fluororesin. Any of the above-described fluororesins can be used as the fluororesin, but Polytetrafluoroethylene (PTFE) is preferably used. Alternatively, a member obtained by coating a metal member with a fluororesin may be used.
The nozzle 108 is described in detail with reference to fig. 3A and 3B. The nozzle 108 includes a substantially cylindrical nozzle outer tube 108a and a nozzle body 108f provided on the inner peripheral side of the nozzle outer tube 108 a. An opening 108B having a substantially circular cross section and a diameter D1 and being perpendicular to the center line (the one-dot chain line in fig. 3B) of the nozzle outer tube 108a is provided on the inner peripheral side of the nozzle outer tube 108a so that the liquid flows therein. The hole 108b corresponds to a "large-diameter hole" according to one embodiment of the present invention. The outer surface of the nozzle outer tube 108a is provided with a male screw portion 108s, and the nozzle outer tube 108a is screwed in a sealed state to a female screw portion formed in the main pipe 102, whereby the nozzle 108 is fixed to the main pipe 102. In this fixation, for example, the tip of the flat head screwdriver can be inserted into the fixation groove 108r. The relief portion 108q, on which no screw thread is formed, is provided on the flange 108c side of the male screw portion 108 s.
When the nozzle 108 is screwed to the main pipe 102, the center line of the injection hole 108j (which is a one-dot chain line of fig. 3 and coincides with the center line of the nozzle outer cylinder 108a of the nozzle 108) is adjusted in such a manner as to be directed in the set direction. A mark for specifying the position of the nozzle 108 in the circumferential direction can be provided around the female screw portion in the concave portion of the main pipe 102 and on the outer peripheral portion of the flange 108c of the nozzle 108. Thereby, the operation of screwing the nozzle 108 with the main pipe 102 can be performed easily and accurately.
A flange 108c for positioning the direction of the center line (one-dot chain line in fig. 3A) of the nozzle outer tube 108a when attached to the main pipe 102 is formed at one end of the nozzle outer tube 108 a. A cross section along a center line (a one-dot chain line in fig. 3A) of the other end portion of the nozzle outer tube 108a is formed with a substantially conical cutout hole 108d. Further, a substantially spherical nozzle body fixing hole 108e having a maximum diameter D2 as compared with the diameter D1 of the hole 108b is formed at a position corresponding to the bottom of the cone-shaped cutout hole 108D. The nozzle body 108f includes a substantially spherical rotating portion 108g and a cylindrical injection portion 108h extending radially from the outer peripheral portion of the spherical rotating portion 108g, and d2 corresponds to the diameter of the substantially spherical rotating portion 108 g. The diameter D3 of the cylindrical ejection portion 108h is smaller than the diameter D1 of the opening portion 108 b. That is, in the nozzle 108 of embodiment 1, D2 > D1 > D3 is set.
Here, an example of a method of attaching the spherical rotation portion 108g to the nozzle outer tube 108a will be described. For example, the member including the nozzle outer tube 108a and the flange 108c is divided into at least two parts along its center line (see the one-dot chain line in fig. 3). The spherical rotation portion 108g is fitted into the spherical nozzle body fixing hole 108e in the divided member so that the injection portion 108h faces a predetermined direction. In this state, the spherical rotation portion 108g of the nozzle body 108f is rotatable in the nozzle body fixing hole 108e, and therefore the injection portion 108h can be set to be oriented in a predetermined direction. Next, the divided other member and the divided one member are assembled together so as to sandwich the rotating portion 108 g. After the nozzle outer tube 108a divided into two is assembled, the nut member 108p is screwed from the tip end side of the nozzle outer tube 108a to the flange 108c and fixed. For this fixation, for example, screw holes penetrating between the two-part nozzle outer cylinders 108a may be fixed by appropriate screw members, or the two-part nozzle outer cylinders 108a may be fixed to each other by an adhesive instead of using the nut members 108p. By this fixing mechanism, the spherical rotation portion 108g of the nozzle body 108f rotatably fitted into the nozzle body fixing hole 108e of the nozzle outer tube 108a is firmly fixed together with the nozzle outer tube 108a and the flange 108c.
Although the example in which the nozzle outer tube 108a is divided into two parts and the spherical rotation part 108g is fitted is described here, the present invention is not limited to this, and for example, the spherical rotation part 108g may be fitted from the tip end side of the nozzle outer tube 108 a. A case where the spherical rotation portion 108g is fitted from the tip end side of the nozzle outer tube 108a will be described as a modification. First, the shape and size of the inner peripheral side of the nozzle outer tube 108a in the modification will be described. The nozzle body fixing hole 108e of the modification is formed in a spherical shape like in fig. 3B on the flange side, but is formed to have a smaller diameter from the maximum diameter (corresponding to the portion indicated by the arrow D2 in fig. 3B) of the nozzle body fixing hole 108e toward the tip side, and further, to have a smaller diameter (in this modification, the minimum diameter is the minimum diameter at the position closer to the tip side than the maximum diameter of the nozzle body fixing hole 108e, but not the diameter D1 in fig. 3B, for example) at the position closer to the tip side than the minimum diameter portion of the notch hole 108D, and gradually expands in a conical shape. Further, before the nut member 108p is screwed from the front end side of the nozzle outer tube 108a, the notch hole 108D slightly expands and the minimum diameter of the notch hole 108D at this time substantially coincides with D2. If the nut member 108p is screwed from the front end side of the nozzle outer tube 108a to the flange 108c, the minimum diameter of the notch hole 108D becomes smaller than D2. Next, a method of fitting and fixing the spherical rotation portion 108g from the tip end side of the nozzle outer tube 108a in the modification will be described. The spherical rotation portion 108g of the nozzle body 108f is inserted from the front end side of the nozzle outer tube 108a to the nozzle body fixing hole 108e in a state before the nut member 108p is screwed from the front end side of the nozzle outer tube 108 a. At this time, since the smallest diameter of the cutout hole 108D substantially coincides with D2, the rotating portion 108g having the diameter of D2 can pass through the smallest diameter portion of the cutout hole 108D. In this case, since the maximum diameter of the nozzle body fixing hole 108e is slightly larger than D2, the spherical rotation portion 108g of the nozzle body 108f can be set to be rotatable and the ejection portion 108h can be set to be directed in a predetermined direction in the nozzle body fixing hole 108 e. If the injection portion 108h is set to be oriented in a predetermined direction, the nut member 108p is then screwed from the tip end side of the nozzle outer tube 108a to the flange 108c to be fixed. By screwing the nut member 108p into the flange 108c, the minimum diameter of the notch hole 108D becomes smaller than D2, and the maximum diameter of the nozzle body fixing hole 108e is reduced until it becomes substantially equal to D2, so that the spherical rotation portion 108g of the nozzle body 108f is firmly fixed integrally in the nozzle body fixing hole 108 e.
A substantially conical opening portion 108k is formed in a central portion of the rotating portion of the nozzle body 108f on the opposite side of the injection portion 108h, and the conical opening portion 108k communicates with an opening portion 108b formed on the inner peripheral side of the nozzle outer tube 108 a. The diameter D4 of the hole portion of the cone-shaped hole portion 108k is set larger than the diameter D1 of the hole portion 108b of the nozzle outer tube 108 a.
The spherical rotation portion 108g can rotate around the center line of the nozzle (one-dot chain line in fig. 3A) until the wall portion of the cone-shaped cutout hole 108d of the nozzle outer tube 108a comes into contact with the tip end or the root portion of the ejection portion 108 h. However, by appropriately selecting the diameter D4 of the conical opening 108k of the nozzle body 108f and the diameter D1 and the angle α of the opening 108b of the nozzle outer tube 108a, the largest diameter portion 108m of the conical opening 108k of the nozzle body 108f is not directly exposed in the opening 108b of the nozzle outer tube 108a even when the injection portion 108h of the nozzle body 108f is rotated. α can be set to a degree of, for example, 100 ° to 140 °, for example, about 120 °. This can prevent damage caused by direct contact with high-pressure liquid due to the fact that the largest diameter portion 108m of the opening portion 108k at the rotating portion 108g of the nozzle main body 108f is directly located in the opening portion 108b of the nozzle outer tube 108a, and can prevent disturbance of the flow of raw liquid from the opening portion 108b toward the opening 108 i.
Further, a cylindrical hole 108i having a predetermined diameter D5 is provided from the top of the conical hole portion 108k of the nozzle body 108f toward the injection portion 108h side until the vicinity of the injection portion 108h, an injection hole 108j having a predetermined diameter D6 is provided in the injection portion 108h from the tip end side of the nozzle by a predetermined length L1, and a transition hole portion 108n having a diameter sequentially reduced is provided between the cylindrical hole 108i and the injection hole 108 j. The angle β in the transition hole 108n can be set to a range of 30 ° to 90 °, and is preferably set to, for example, 45 ° to 60 °. The dimensions of the diameter D5 and the diameter D6 are selected according to the size, concentration, and the like of the generated fine bubbles. The diameter D5 is preferably 3 to 20 times the diameter D6, and more preferably the diameter D5 can be 5 to 10 times the diameter D6. The cylindrical opening 108i corresponds to a middle diameter opening portion according to one embodiment of the present invention. Thus, the raw liquid flowing into the nozzle 108 through the nozzle outer tube 108a is pressurized and rectified in the opening 108i passing through the cylindrical shape, and further pressurized in the transition opening portion 108n to be ejected from the ejection hole 108 j. In order to rectify the flow of the raw liquid passing through the opening 108i and the injection hole 108j and to make the raw liquid discharged from the injection hole advance straight, the lengths of the opening 108i and the injection hole 108j preferably have a certain length. Therefore, the length L1 of the ejection hole 108j is preferably 3 times or more the diameter D6 of the ejection hole 108j, and from the viewpoint of ease of manufacture, L1 is not preferably too long, and for example, L1 is preferably set to a level of 3 to 30 times D6, and more preferably L1 is set to a level of 5 to 20 times D6. Although not particularly limited, the diameter of the ejection hole 108j may be set to 0.1mm to 1mm, and more preferably 0.2mm to 0.5mm. Further, the material of the nozzle body 108f is preferably a material having high abrasion resistance and corrosion resistance, and examples thereof include stainless steel HRC of 60 or more.
The nozzle 110 is described with reference to fig. 4. The nozzle 110 includes a nozzle 108 (see fig. 3A and 3B) in which an injection portion 108h of a nozzle body 108f is inclined to the left in the drawing by a predetermined angle, and a center line (θ in fig. 4) of an injection hole 110j 1 The one-dot chain line inclined at an angle) is inclined at an angle θ with respect to the center line of the flow space 126 (thick white hollow arrow in fig. 4) 1 And has a structure substantially similar to that of the nozzle 108. In the case of the nozzle 110, too, after the nozzle body 110f is assembled so that the injection portion 110h becomes a predetermined angle, the position of the injection portion 110h is set by an appropriate mechanismThe device is firmly fixed into a whole. Thus, two types of nozzles prepared in advance for use in the fine bubble liquid manufacturing apparatus 10 according to embodiment 1 are obtained. Although the shape of the rotation portion 108g is described as a sphere, the shape of the rotation portion 108g in the present invention is not limited to a sphere, and may be an oval shape, a cylindrical shape, or the like.
As shown in fig. 2A and 2B, the fine bubble generating portion 100 of embodiment 1 is obtained by attaching the nozzles 108,110 thus assembled to the main pipe 102. Thus, the water supplied from the pipe 146 into the main pipe 102 is injected into the circulation space 126 through the opening 110b (108 b) formed in the nozzle outer tube 110a (108 a) of the nozzle 110 (108), the opening 110k (108 k) formed in the rotating portion 110g (108 g) of the nozzle main body 110f (108 f), and the injection hole 110j (108 j) formed in the injection portion 110h (108 h), and mixed with a predetermined gas supplied from the pipe 138 to prepare a fine bubble liquid, and is supplied from the discharge pipe 106 to the storage tank 12.
According to the nozzles 108 and 110 of embodiment 1, even a single nozzle can arbitrarily set the injection angle θ with respect to the center line (thick white hollow arrow in fig. 4) of the flow space 126 1 (see FIG. 4. Also including θ 1 Case=90°. ) Therefore, the injection angle θ can be easily realized 1 Different nozzles of various specifications. That is, for example, by setting the injection angle of the nozzle 108 with respect to the center line (thick white hollow arrow in fig. 4) of the flow space 126 to θ 1 =90° and the injection angle of the nozzle 110 is set to θ 1 The nozzles 108 can spray liquid in a direction perpendicular to the center line of the main pipe 102 and the nozzles 110 can spray liquid in a direction oblique to the center line of the main pipe 102 even if the nozzles 108,110 are mounted by screwing the respective nozzles 108,110 approximately perpendicularly into the main pipe 102 < 90 ° (e.g., about 45 ° -75 °), for example, about 60 °).
Although the nozzle 110 has an injection angle θ with respect to the center line (thick white hollow arrow in fig. 4) of the flow space 126 1 In the downstream direction (left direction of FIG. 4) 0.ltoreq.θ 1 ＜90°，The upstream direction (right direction of FIG. 4) is 90 DEG < θ 1 180 DEG or less, but 90 DEG < theta 1 In the case of 180 DEG or less, the nozzle 110 is directed toward the upstream side. In order to orient the nozzle 110 in the downstream direction of the water flow in the flow space 126, the injection angle of the nozzle 110 is preferably set to 0 degree. Ltoreq.θ 1 An extent of < 90 °, for example 45 ° to 75 °, for example about 60 °. Alternatively, the nozzle 108 may be set to 0.ltoreq.θ 1 Less than or equal to 180 degrees. Further, the injection angles of the nozzles 108 and 110 may be different for each group. In addition, although the injection angle θ of a group of 3 nozzles 108,110 1 The injection angles θ of the 3 nozzles 108 and 110 may be set to be the same, but not limited to this 1 Different. By appropriately adjusting the injection angle theta 1 Fine bubbles of a desired particle size can be generated.
In addition, since the injection angle θ with respect to the center line (thick white hollow arrow in fig. 4) of the flow space 126 can be adjusted in each of the nozzles 108,110 1 Accordingly, the mounting angles of all the nozzles 108,110 with respect to the main pipe 102 can be set to be perpendicular to the center line (thick white hollow arrow in fig. 4) of the main pipe 102, and thus the mounting structure of the nozzles 108,110 with respect to the main pipe 102 can be prevented from being complicated. Therefore, the design and manufacture of the main pipe 102 can be simplified, and the versatility of the main pipe 102 can be improved.
The injection portions 108h,110h of the injection holes 108j,110j formed in the rotation portions 108g,110g may be provided so as to be offset from the center line of the nozzle outer cylinders 108a,110a (the one-dot chain line in fig. 3A and the one-dot chain line perpendicular to the thick white hollow arrow in fig. 4, the same applies hereinafter) by a predetermined distance. Since the nozzles 108 and 110 having such a structure are provided, the positions of the injection holes 108j and 110j can be adjusted by rotating the rotating portions 108g and 110g with the center line of the nozzle outer cylinders 108a and 110a as the center.
Embodiment 2
In embodiment 1, although an example is shown in which the ejection direction of the liquid of each of the nozzles 108 and 110 is directed to the center line of the main pipe 102, in embodiment 2, the liquid can be ejectedAdjusting the angle θ of the centerline of the injection portion 108h 2 (refer to fig. 5) and an example in which the center line of the ejection portion 108h is directed in a direction deviated from the center line of the main pipe 102 is described.
The nozzles 108 and 110 according to embodiment 2 in which the direction of the liquid ejected from each of the nozzles 108 and 110 is deviated from the center line of the main pipe 102 will be described with reference to fig. 5 for the case of using the nozzle 108. Fig. 5 is a V-V sectional view of fig. 2A. In fig. 5, the same reference numerals are given to the same components as those described in fig. 1 to 4, and detailed description thereof is omitted.
As shown by arrows in fig. 5, the nozzle 108 used in embodiment 2 has a water jet direction that is deviated from a direction toward the center line of the main pipe 102 and the solid rod 130. If a structure is adopted in which the center line of the injection portion 108h of the nozzle 108 is deviated in the circumferential direction from the radial direction of the main pipe 102 (refer to the arrow of fig. 5), the injection direction of water is deviated in the circumferential direction, and therefore the angle at which water impinges on the solid bar 130 can be adjusted. This can generate a jet flow in which the water to be discharged surrounds the solid rod 130 in a predetermined direction. By sequentially changing the direction of the jet flow from the upstream toward the downstream by the nozzles 108 of each group, a large stirring action is generated at the boundary surface of the jet flow in the rotation direction, and a fine bubble liquid is obtained by the stirring action.
The angle of the center line of the jet part 108h (the single-dot chain line in fig. 5, the same applies hereinafter) with respect to the jet flow in the counterclockwise direction is defined as θ as viewed from the downstream side of the flow space 126 2 . Viewed from the downstream side of the flow space 126, the jet flow in the counterclockwise direction is 0.ltoreq.θ 2 < 90 °, θ in the case where the center line of the ejection portion 108h is directed toward the center line of the solid bar 130 (center of the solid bar 130) 2 When viewed from the downstream side of the flow space 126, the jet flow in the clockwise direction is 90 ° < θ 2 Less than or equal to 180 degrees. Even when such a structure is used for the nozzle 110, the same operational effects can be obtained.
In addition, since the injection angle can be adjusted in each of the nozzles 108,110, the installation angles of all the nozzles 108,110 with respect to the main pipe 102 can be set to be perpendicular with respect to the center line of the main pipe 102, and thus the installation structure of the nozzles 108,110 with respect to the main pipe 102 can be prevented from becoming complicated. Therefore, the design and manufacture of the main pipe 102 can be simplified, and the versatility of the main pipe 102 can be improved.
In addition to adjusting the angle θ of the center line of the ejection portions 108h,110h 2 In addition to (see FIG. 5), the angle of θ may be 0.ltoreq.θ 1 Adjusting the injection angle θ of the injection portions 108h,110h with respect to the center line of the flow space 126 (center line direction of the main pipe 102, thick white hollow arrow of FIG. 4) in a range of 180 DEG or less 1 . Thereby, the injection angle θ can be appropriately adjusted 1 ,θ 2 And can generate fine bubbles of a desired particle size.
Embodiment 3
In embodiment 3, an injection angle θ at which the injection portions 108h,110h are prepared is shown 1 ,θ 2 Examples of the plurality of types of nozzles which are fixed and have different specifications.
As shown in fig. 6, the nozzles 160,160a,160b of embodiment 3 are prepared with a plurality of kinds of, for example, a diameter D6 of the injection hole 160h, a length L1 of the injection hole 160h, a diameter D5 of the opening 160f, a shape, a size, or an angle β of the transition opening 160g, and an angle θ of the injection hole 160h with respect to the center line of the flow space 126 1 、θ 2 Different specifications of nozzles. In fig. 6, three kinds of nozzles 160,160a,160b having different specifications are illustrated. Fig. 6A is a bottom view of the nozzle 160 of embodiment 3, fig. 6B is a cross-sectional view of VIB-VIB of fig. 6A, fig. 6C is a bottom view of the nozzle 160A of other specifications of embodiment 3, fig. 6D is a cross-sectional view of VID-VID of fig. 6C, fig. 6E is a bottom view of the nozzle 160B of another other specification of embodiment 3, and fig. 6F is a cross-sectional view of VIF-VIF of fig. 6E. The nozzles 160,160a,160b of embodiment 3 are different from the nozzles 108,110 of embodiments 1 to 2 in that spherical rotating portions 108g,110g are not specially provided, and the spherical rotating portions 108g,110g are substantially integrated with the nozzle outer cylinders 108a,110 a.
The nozzles 160,160a,160b of embodiment 3 will be described in detail. The nozzles 160,160a,160b are shown in fig. 6, and have a nozzle cylinder 160a and a flange 160b. The male screw portion 160d is provided on the outer surface of the nozzle tube portion 160a, and the nozzles 160,160a,160b are fixed to the main pipe 102 by screwing the nozzle tube portion 160a in a sealed state to the female screw portion formed in the main pipe 102. The flange 160b is provided with a fixing groove 160c, and when fixing the nozzles 160,160a,160b, for example, the tip of a flat head screwdriver can be inserted into the fixing groove 160c. The relief portion 160e, on which no screw thread is formed, is provided on the flange 160b side of the male screw portion 160 d.
A cylindrical opening 160f having a predetermined diameter D5 is provided from the center of the flange 160b toward the injection portion 160i of the nozzle tube 160a, a cylindrical injection hole 160h having a predetermined diameter D6 is provided from the tip end side of the nozzle by a predetermined length L1 in the injection portion 160i, and a transition opening 160g having a diameter sequentially reduced is provided between the opening 160f and the injection hole 160 h. The angle β at the transition hole 160g can be set to a range of 30 ° to 90 °, and is preferably set to, for example, 45 ° to 60 °. The dimensions of the diameter D5 and the diameter D6 are selected according to the size, concentration, and the like of the generated fine bubbles. The diameter D5 is preferably 3 to 20 times the diameter D6, and the diameter D5 can be more preferably 5 to 10 times the diameter D6. Accordingly, the raw liquid flowing through the cylindrical opening 160f is pressurized and injected from the injection hole 160h while passing through the transition opening 160g. In order to rectify the flow of the raw liquid passing through the opening 160f and the injection hole 160h and to make the raw liquid discharged from the injection hole advance straight, the lengths of the opening 160f and the injection hole 160h preferably have a certain length. Accordingly, the length L1 of the injection hole 160h is preferably 3 times or more the diameter D6 of the injection hole 160h, and from the viewpoint of ease of manufacture, L1 is not preferable to be too long, for example, L1 is preferably set to a level of 3 to 30 times D6, and more preferably L1 is set to a level of 5 to 20 times D6.
The outer dimensions of the nozzle 160 and the nozzle 160A, the diameter D5 of the opening 160f, and the angles θ1, θ2 of the injection holes 160h are substantially the same, and the diameters D6, D6' of the injection holes 160h, the lengths L1, L1' of the injection holes 160h, and the angles β, β ' of the transition opening 160g are different. The nozzle 160B has substantially the same outer dimensions as the nozzle 160 and the nozzle 160A, except that the nozzle 160B does not have the opening 160f, the transition opening 160g, and the injection hole 160h. The outer dimensions of the nozzles 160,160a,160b are set to be substantially the same as those of the nozzles 108,110 of embodiments 1 to 2. Note that, similarly to the case where the nut members 108p,110p are provided to overlap the flange 108c in the nozzles 108,110 of embodiments 1 to 2, the example where the nut member 160j is provided in the nozzles 160,160a,160b of embodiment 3 has been described, but the present invention is not limited to this, and a structure where, for example, the nut member 160j is not provided may be employed. When the nut member 160j is not provided, the thickness of the flange 160b is increased by the thickness of the nut member 160j, whereby the outer dimensions can be made substantially equal to those of the nozzles 108 and 110 of embodiments 1 and 2.
Accordingly, the nozzles 160,160a, and 160b of embodiment 3 are prepared in advance for a plurality of types of nozzles 160,160a, and 160b having different specifications, and a desired nozzle 160,160a, and 160b is selected from the plurality of types of nozzles 160,160a, and 160b to be attached to the main pipe 102 for use, whereby fine bubbles having a desired particle diameter can be generated. Further, since the nozzles 160,160a,160b of embodiment 3 have substantially the same outer diameter dimensions as the nozzles 108,110 of embodiments 1 to 2, the main pipe 102 can be shared in the case of using any of the nozzles of embodiments 1 to 3, and therefore, versatility can be improved and design and manufacturing of the main pipe 102 can be simplified. The nozzle 160B is a nozzle having no injection hole 160h, and thus can be used to block a nozzle mounting hole provided in the main pipe 102. Since the number and arrangement of the nozzles can be substantially adjusted by blocking the nozzle attachment holes provided in the main pipe 102 with the nozzles 160B, versatility can be improved and the degree of freedom of design can be improved. In addition, when any one of the nozzles 160,160a,160b fails, maintenance can be easily performed by replacing the nozzle. In the case of replacing the main pipe 102 in units of units as in embodiment 4 described later, the outer dimensions of the nozzles 160,160a,160b do not need to be matched with the outer dimensions of the nozzles 108, 110. That is, by preparing the units corresponding to the outer dimensions of the nozzles 108,110,160 a,160b in advance and replacing the units, the versatility can be improved and the degree of freedom in design can be also improved.
In addition, as described above, although the length of the opening 160f and the injection hole 160h is preferably a certain length in order to rectify the flow of the raw liquid passing through the opening 160f and the injection hole 160h and to advance the raw liquid discharged from the injection hole straight, a spiral groove may be provided on the inner peripheral side of at least any one of the opening 160f, the transition opening 160g, and the injection hole 160h in order to advance the raw liquid discharged from the injection hole straight. In addition, the angle θ of the injection hole 160h in the nozzles 160,160a,160b shown in fig. 6 1 、θ 2 Are all 90 °, but it is also possible to vary the angle θ 1 And theta 2 Is a specification of (2). For example, as shown in fig. 4 described in embodiment 1, it is possible to change the angle θ of the injection hole 160h 1 In addition, as shown in fig. 5 described in embodiment 2, a change angle θ may be used in which the direction of the liquid to be ejected from each of the nozzles 160,160a,160b is directed in a direction deviated from the center line of the main pipe 102 (the center of the solid rod 130 in fig. 5) 2 Is a specification of (2).
In the case of using the nozzles 108 and 110 according to embodiments 1 and 2, if a plurality of types of nozzles having different specifications, such as the diameter D6 of the injection hole 108j, the diameter D5 of the opening 108i, and the shape or size of the transition opening 108n, are prepared in advance, fine bubbles having a desired particle diameter can be generated by selecting a desired nozzle 108 and 110 from among the plurality of types of nozzles 108 and 110 and attaching the selected nozzle to the main pipe 102.
Embodiment 4
In embodiment 4, an example is shown in which a plurality of nozzles 108,110,160 a,160b can be replaced together in units of units. In embodiment 4, the nozzles 108,110,160 a,160b described in embodiments 1 to 3 may be used.
As the replacement unit, for example, the main pipe 102 can be set as a unit. The replacement unit may be configured so that, for example, a set of three nozzles 108 and 110 can be divided and replaced by setting the set of three nozzles 108 and 110 as a unit. Alternatively, as the replacement means, a plurality of sets of nozzle groups may be replaced together in units. Further, the nozzle groups of all groups disposed in the space 120 may be set as units, and all the nozzles 108 and 110 may be replaced at the same time. An example of 6 nozzles 108,110 as a unit is shown in fig. 7. Each of the units U1 to U4 includes 6 nozzles 108 and 110. Each unit has a female screw 102a and/or a male screw 102b, and each unit U1 to U4 is coupled to each other by the female screw 102a and the male screw 102b, but the present invention is not limited thereto, and each unit U1 to U4 may be coupled to each other by a bolt, for example. In this way, the nozzles 108 and 110 are replaced in units of units, so that the operation of replacing the nozzles is easy. Further, by selecting the number of cells while setting the shapes of the cells to be the same, the micro-bubble generating units 100 of different specifications can be obtained. In addition, in the case where, for example, a nozzle fails, replacement is performed in units of units, so that it is unnecessary to determine the position of the failure in the unit, and maintenance is easy. Any of the nozzles 108 and 110 described in embodiments 1 to 3 may be used as the nozzles 108 and 110. In addition, since the main pipe 102 can be shared, versatility of the main pipe 102 can be improved, and design and manufacture of the main pipe 102 can be simplified. In the case where the main pipe 102 is replaced in units of units as in the present embodiment, the outer dimensions of the nozzles 108,110,160 a,160b do not need to be uniform. That is, by preparing units corresponding to the outer dimensions of the nozzles 108,110,160 a,160b in advance and replacing the units, versatility can be improved and the degree of freedom in design can be also improved.
In the above embodiments, although water is described as an example of the liquid to be treated, water includes normal water, pure water, purified water, and the like. The liquid to be treated is not limited to water, and may include, for example, an aqueous solution and/or fuel. Examples of the aqueous solution include an aqueous solution containing an organic or inorganic substance (for example, an inorganic component using seawater as a raw material, bittern, fucoidan (fucoidan), and the like) in water. In the case of using water or an aqueous solution as the liquid to be treated, it can be provided as a beverage. In addition, as the fuel, for example, gasoline, light oil, heavy oil, kerosene, ethanol, and the like are included. When the liquid to be treated is a fuel, the fuel can be reformed by forming a fine bubble liquid.
For example, when an aqueous solution containing brine of 4% or more is used as the liquid to be treated, if a fine bubble liquid having an ozone concentration of 40ppm or more is formed, a fine bubble liquid containing ozone of high concentration which can be used as a bactericide is obtained. The ozone concentration may be, for example, 100ppm or more. The bittern is added to increase the ozone concentration of the ozone-containing fine bubble liquid, and the concentration of the bittern tends to increase to 100% as the concentration of the bittern increases. It should be noted that an ozone-containing fine bubble liquid can be obtained even if the concentration of bittern is less than 4%. Further, by adjusting the nozzle, ozone fine bubbles including nanobubbles can be generated to generate an ozone-containing fine bubble liquid, and the particle size of the ozone fine bubbles at this time can be set by adjusting the nozzle. Accordingly, an ozone-containing fine bubble liquid using ozone fine bubbles containing at least any one of micro bubbles, micro nano bubbles, and nano bubbles can be selectively generated.
The ozone-containing fine bubble liquid produced has, for example, an ozone gas concentration of 100ppm or more in a stock solution of the ozone fine bubble liquid, and even if the ozone gas concentration of the ozone fine bubble liquid is diluted to 4ppm or less, the ozone gas concentration of the ozone fine bubble liquid after freezing and preserving for 1 year or more is 4ppm or more, and the ozone fine bubble liquid has an odor component decomposition action and an antiviral action in addition to the sterilizing action, and is effective for oral care or the like used together with an ultrasonic cleaner or as a mouthwash. In addition, the ozone fine bubble liquid is also effective for semiconductor cleaning and the like. For example, even when the production is started for 6 months or more at normal temperature, the ozone concentration of the ozone fine bubble liquid is maintained at 100ppm or more by measurement by the KI method. The ozone fine bubble liquid may be stored in a frozen state. When the stock solution of the ozone fine bubble liquid (100 ppm or more) was stored at-20℃for one year, the ozone concentration was maintained at about 4ppm. Ozone microbubble liquids can inactivate bacteria and viruses, and can also break down harmful chemicals. Further, higher sterilizing, deodorizing and the like effects are produced by synergistic effects together with sterilizing and/or deodorizing effects produced by ozone contained in the ozone fine bubble liquid. Thus, if an ozone fine bubble liquid is used, the effects of inactivating bacteria and viruses, sterilizing, and deodorizing are produced. In addition, the antibacterial agent has antibacterial effects on multi-drug resistant staphylococcus aureus (Staphylococcus aureus), vancomycin resistant enterococcus (Enterococcus faecalis, e.faecium), multi-drug resistant pseudomonas aeruginosa (Pseudonomas aeruginosa), p.g. bacteria (Porphyromonas gingivalis), p.i. bacteria (Prevotella intermedia), a.a. bacteria (Aggregatibacter actinomycetemcomitans), f.n. bacteria (Fusobacterium nucleatum), streptococcus mutans (Streptococcus mutans) which are causative bacteria, and the like. The ozone fine bubble liquid has a sterilizing effect even when the ozone gas concentration is diluted to 4ppm, and has a sterilizing effect even when the ozone fine bubble liquid is further diluted to 0.1 ppm. Further, the safety of the ozone fine bubble liquid was confirmed by an oral epithelial-mucosal safety test or the like, and hardly exerts a harmful effect on the human body.
In the above embodiment, the example in which each nozzle 108,110,110A is screwed into the main pipe 102 perpendicularly to the center line of the main pipe 102 has been described, but the mounting angle of each nozzle is not necessarily perpendicular to the center line of the main pipe 102, and for example, the nozzle 110 on the most upstream side may be mounted in a direction toward the downstream side.
In addition, the number of nozzles is described in the case where each group has 3 nozzles and it has 6 groups, but the present invention is not limited thereto, and the number of nozzles included in one group and the number of groups are arbitrary, and may be appropriately selected according to the particle size of the generated fine bubbles.
Claims (17)
1. A fine bubble liquid manufacturing apparatus, characterized by comprising:
an inlet mechanism that supplies pressurized raw liquid;
a raw liquid circulation mechanism for circulating the pressurized raw liquid;
a gas supply mechanism for supplying gas to the raw liquid circulation mechanism;
a plurality of nozzles provided along the raw liquid circulation mechanism, at least one of the plurality of nozzles having an injection hole that injects the pressurized raw liquid supplied by the inlet mechanism; and
An outlet means for taking out the generated fine bubble liquid from the outlet of the raw liquid flow means,
a plurality of types of nozzles are prepared in advance as the plurality of nozzles, the specifications being at least any one selected from the following specifications:
the nozzle is provided with a rotating part or the nozzle is not provided with a rotating part; further, the processing unit is used for processing the data,
whether an injection hole exists, the injection direction of the injection hole, the length of the injection hole, the shape of the injection hole or the caliber of the injection hole,
the plurality of nozzles are replaceably mounted in a direction intersecting the primary liquid circulation mechanism,
the outer dimensions of the plurality of nozzles are set to be identical,
at least one nozzle of the plurality of nozzles is a nozzle selected from among the plurality of types of nozzles prepared in advance,
at least one of the plurality of nozzles has the rotating portion,
the injection direction of the injection hole can be adjusted as follows: according to the rotation position of the rotation part, the center line of the injection hole forms an arbitrary angle relative to the long side direction of the original liquid circulation mechanism, and forms an arbitrary angle relative to the direction of the center line of the original liquid circulation mechanism in the surface orthogonal to the long side direction of the original liquid circulation mechanism,
A fine bubble liquid containing fine bubbles of a predetermined particle diameter is produced in accordance with at least one of the specifications of the nozzles, the arrangement of the nozzles, the number of the nozzles, the pressure of the raw liquid supplied from the inlet mechanism, the supply amount of the raw liquid determined by a pressurizing mechanism for supplying the raw liquid to the inlet mechanism, the number of times the pressurized raw liquid is circulated by the pressurizing mechanism, the pressure of the gas supply mechanism, and the supply amount of the gas determined by the gas supply mechanism.
2. The apparatus for producing fine bubble liquid according to claim 1, wherein replacement of the plurality of nozzles is performed in units of units.
3. The apparatus for producing a fine bubble liquid according to claim 1 or 2, wherein the plurality of nozzles are at least any one of the following:
a plurality of nozzles provided in the circumferential direction and/or the longitudinal direction of the raw liquid circulation mechanism;
a plurality of nozzles in which the injection hole of at least one nozzle is inclined toward the downstream side; and
the raw liquid circulation mechanism is provided with a plurality of nozzles in the circumferential direction, and a plurality of rows of nozzles are also provided in the longitudinal direction of the raw liquid circulation mechanism, and the positions of the injection holes of the nozzles in the rows adjacent in the longitudinal direction are shifted in the circumferential direction.
4. The apparatus according to claim 1 or 2, wherein the gas supply means is coaxial with the raw liquid circulation means and is provided inside the raw liquid circulation means so as to extend in a longitudinal direction of the raw liquid circulation means.
5. The apparatus for producing fine bubble liquid according to claim 1 or 2, wherein the specification of the plurality of nozzles is at least any one of the following:
at least one of an injection angle in a circumferential direction with respect to the raw liquid circulation mechanism, an injection angle in a longitudinal direction with respect to the raw liquid circulation mechanism, positions of injection holes of the plurality of nozzles, diameters of the injection holes, lengths of the injection holes, inclination angles of transition hole portions provided on an upstream side of the injection holes and sequentially decreasing in diameter as going toward the injection holes, and diameters of holes on an upstream side of the injection holes is different; and
the type of the nozzle is set by a nozzle capable of adjusting the injection hole.
6. The apparatus for producing fine bubble liquid according to claim 5, wherein the nozzle capable of adjusting the injection hole is at least any one of:
A nozzle in which an injection direction of the injection hole is adjustable; or alternatively
The injection hole includes a through hole penetrating the rotation mechanism and communicating with the inside of the nozzle, and the direction of the center line of the injection hole can be adjusted by changing the rotation angle of the rotation mechanism.
7. The apparatus for producing fine bubble liquid according to claim 6, wherein the through hole of the nozzle capable of adjusting the injection hole comprises:
a cylindrical large-diameter opening portion which communicates with the raw liquid circulation mechanism provided in the nozzle;
a cone-shaped opening portion provided in the rotation mechanism and connected to the large-diameter opening portion;
a cylindrical middle-diameter hole portion connected to a top of the conical hole portion and having a diameter smaller than a diameter of the large-diameter hole portion;
a transition hole portion connected to the intermediate diameter hole portion and having a diameter sequentially decreasing; and
an injection hole connected to the transition hole portion and formed at a front end of the injection portion, the injection hole having a diameter smaller than that of the intermediate hole portion,
The cone-shaped opening portion has a larger maximum diameter than the large-diameter opening portion,
when the rotation mechanism is rotated, the largest diameter portion of the cone-shaped opening portion is not directly exposed in the large diameter opening portion.
8. The apparatus for producing a fine bubble liquid according to claim 1 or 2, wherein a spiral groove is provided on the injection hole and/or an inner surface on an upstream side of the injection hole.
9. The apparatus according to claim 1 or 2, wherein the fine bubbles include at least one of micro bubbles, micro nano bubbles, and nano bubbles.
10. The apparatus for producing a fine bubble liquid according to claim 1 or 2, wherein the raw liquid is a liquid including at least one of water, an aqueous solution, and a fuel.
11. The apparatus for producing a fine bubble liquid according to claim 10, wherein the fuel comprises at least one selected from gasoline, light oil, heavy oil, kerosene, and ethanol.
12. The apparatus for producing a fine bubble liquid according to claim 10, wherein the raw liquid is an aqueous solution containing 4% or more of bittern, the gas is ozone, and the apparatus for producing a fine bubble liquid of ozone having a concentration of 100ppm or more of ozone.
13. The apparatus for producing a fine bubble liquid according to claim 1 or 2, wherein the gas includes at least any one of oxygen, ozone, hydrogen, nitrogen, air, and a gas generated by electrolysis of water.
14. A method for producing a fine bubble liquid, comprising:
an inlet mechanism that supplies pressurized raw liquid;
a raw liquid circulation mechanism for circulating the pressurized raw liquid;
a gas supply mechanism for supplying gas to the raw liquid circulation mechanism;
a plurality of nozzles provided along the raw liquid circulation mechanism, at least one of the plurality of nozzles having an injection hole that injects the pressurized raw liquid supplied by the inlet mechanism; and
an outlet means for taking out the generated fine bubble liquid from the outlet of the raw liquid flow means,
a plurality of types of nozzles are prepared in advance as the plurality of nozzles, the specifications being at least any one selected from the following specifications:
the nozzle is provided with a rotating part or the nozzle is not provided with a rotating part; further, the processing unit is used for processing the data,
whether an injection hole exists, the injection direction of the injection hole, the length of the injection hole, the shape of the injection hole or the caliber of the injection hole,
The plurality of nozzles are replaceably mounted in a direction intersecting the primary liquid circulation mechanism,
the outer dimensions of the plurality of nozzles are set to be identical,
the method for producing the fine bubble liquid comprises the following steps:
preparing nozzles of the plurality of types of specifications as the plurality of nozzles in advance;
at least one nozzle of the plurality of nozzles is selected from the plurality of types of nozzles prepared in advance, and has the rotating portion, and the injection direction of the injection hole can be adjusted as follows: according to the rotation position of the rotation part, the center line of the injection hole forms an arbitrary angle relative to the long side direction of the original liquid circulation mechanism, and forms an arbitrary angle relative to the direction of the center line of the original liquid circulation mechanism in a surface orthogonal to the long side direction of the original liquid circulation mechanism; and
fine bubble liquid is produced using fine bubbles of a predetermined particle diameter according to at least one of the specifications of the selected nozzles, the arrangement of the nozzles, the number of the nozzles, the pressure of the raw liquid supplied from the inlet mechanism, the supply amount of the raw liquid determined by a pressurizing mechanism for supplying the raw liquid to the inlet mechanism, the number of times the pressurized raw liquid is circulated by the pressurizing mechanism, the pressure of the gas supply mechanism, and the supply amount of the gas determined by the gas supply mechanism.
15. A fine bubble liquid produced by the method for producing a fine bubble liquid according to claim 14,
the fine bubble liquid is produced by generating ozone fine bubbles in a raw liquid containing at least 4% bittern,
has at least one of bactericidal effect, odor component decomposition effect and antiviral effect.
16. The microbubble liquid according to claim 15, characterized in that the microbubble liquid is produced by generating ozone microbubbles including nanobubbles in the raw liquid.
17. The fine bubble liquid according to claim 15 or 16, wherein the raw liquid is a liquid comprising water or an aqueous solution containing 4% or more of bittern.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-110114 | 2018-06-08 | ||
| JP2018110114 | 2018-06-08 | ||
| PCT/JP2019/000808 WO2019234962A1 (en) | 2018-06-08 | 2019-01-14 | Microbubble solution producing device, microbubble solution producing method, and ozone microbubble solution |
Publications (2)
| Publication Number | Publication Date |
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| CN112261991A CN112261991A (en) | 2021-01-22 |
| CN112261991B true CN112261991B (en) | 2023-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201980038961.2A Active CN112261991B (en) | 2018-06-08 | 2019-01-14 | Microbubble liquid production device, microbubble liquid production method, and ozone microbubble liquid |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6834072B2 (en) |
| KR (1) | KR20210018305A (en) |
| CN (1) | CN112261991B (en) |
| WO (1) | WO2019234962A1 (en) |
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| CN114797521B (en) * | 2022-03-29 | 2024-02-06 | 江苏海狮机械股份有限公司 | Micro-nano hydrogen bubble generation system and operation control method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112261991A (en) | 2021-01-22 |
| JPWO2019234962A1 (en) | 2020-06-18 |
| KR20210018305A (en) | 2021-02-17 |
| WO2019234962A1 (en) | 2019-12-12 |
| JP6834072B2 (en) | 2021-02-24 |
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