JP2017185445A - Microbubble generation unit and microbubble generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a microbubble generation unit and a microbubble generation device having a simple configuration, capable of efficiently generating a large amount of microbubble with a predetermined diameter, also capable of generating liquid in which activated gas exemplified by ozone is mixed as microbubble, and having durability for use when the generated liquid is circulated.SOLUTION: A microbubble generation unit 10 comprises: a processing container 20 having an interior space 20A and an opening 12a through which unprocessed liquid and unprocessed gas are taken in; and a blade member 30 rotatably provided in the interior space 20A of the processing container 20 for causing liquid flow by rotation. The processing container 20 has a collision plate 22 provided therein in a direction crossing a direction of the liquid flow, and a discharge port 20b for discharging processed liquid in a state of being mixed as processed gas having a form of microbubble to the outside.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fine bubble generating unit and a fine bubble generating device, and more specifically, a fine bubble generating unit that discharges a liquid in which a gas is mixed as fine bubbles having a predetermined diameter, and a fine bubble including the fine bubble generating unit. The present invention relates to a generation device.

  2. Description of the Related Art Conventionally, research has been conducted to use the effects obtained by mixing a gas as a fine bubble with a liquid for various purposes. As one example, it has been found that by using ozone as the gas, extremely high effects can be obtained for purifying sewage, urine, etc., cleaning semiconductor substrates, and the like. Needless to say, the usefulness of the fine bubbles is being revealed in various fields such as industry, food, medicine, agriculture, fishery, and the like.

  Here, as an example of a device that mixes ozone as fine bubbles with a liquid, a technique is disclosed in which ozone generated in advance by corona discharge is mixed with a liquid by a venturi-shaped injector (see Patent Document 1). ). Alternatively, as another example, a technique is disclosed in which gas is discharged at the time when the gas is included in the liquid and mixed while generating ozone (see Patent Document 2).

Japanese Patent Laid-Open No. 03-072995 JP, 2014-079743, A

  As the usefulness of microbubbles becomes clear in various fields including industry, there is an increasing demand for a microbubble generator that can efficiently supply a large amount of microbubbles having a predetermined diameter.

  On the other hand, when the fine bubble generating device or the like exemplified in the above patent document is applied to a purification treatment application such as sewage and urine, for example, a liquid containing ozone as fine bubbles (that is, sewage and urine) Etc.) may be required to circulate using a pump. However, an activated gas such as ozone causes an action of accelerating the deterioration of a pump seal member (such as a rubber O-ring), so that liquid leakage occurs and the pump cannot be used for a long time. The problem may arise. Furthermore, the problem of causing corrosion in the components of the electrical system may also occur.

  The present invention has been made in view of the above circumstances, has a simple configuration, can efficiently generate a large amount of fine bubbles having a predetermined diameter, and mixes activated gas exemplified by ozone as fine bubbles. An object of the present invention is to provide a fine bubble generating unit and a fine bubble generating device that can generate a liquid and have durability against the use of circulating the generated liquid.

  The present invention solves the above-described problems by the solving means described below.

  The fine bubble generating unit according to the present invention includes a storage container, a first member that closes one side of the storage container, and has an opening through which a pre-processing liquid and a pre-processing gas are taken in, and one side closed by the first member. A cylindrical processing container arranged as described above, a second member that closes the other side of the processing container, and a blade that is rotatably arranged inside the processing container and allows liquid flow by rotation And the processing container has a collision plate disposed in a direction crossing the direction of liquid flow, and is mixed as a post-processing gas in the form of fine bubbles. It is a requirement to have a discharge port for discharging the rear liquid into the storage container.

  Further, the fine bubble generating unit according to the present invention has an internal space and is disposed rotatably in the internal space of the processing container, and a processing container having an opening for taking in the pre-processing liquid and the pre-processing gas, A blade member that causes liquid flow by rotation, and the processing container has a collision plate disposed in a direction intersecting with the direction of liquid flow inside, and after processing that forms a form of fine bubbles It is a requirement to have a discharge port for discharging the processed liquid in a mixed state as a gas to the outside.

  Further, in the fine bubble generation device according to the present invention, a plurality of the fine bubble generation units are continuously arranged, and the discharge port of one fine bubble generation unit is connected to another adjacent fine bubble generation unit. It is a requirement that it is disposed so as to communicate with the opening.

  According to the micro-bubble generating unit according to the present invention, the micro-bubbles whose diameter is refined to a predetermined diameter (for example, about 1 [μm] or less) are processed using the post-processing liquid in which the pre-processing gas is sent out. It becomes possible to supply the processed liquid mixed as a post-gas.

  Moreover, according to the fine bubble generating apparatus according to the present invention, it is possible to efficiently generate a large amount of fine bubbles having a predetermined diameter mixed with the processed liquid as the processed gas. In addition, it is possible to generate a liquid in which an activated gas exemplified by ozone is mixed as fine bubbles, and a device with a simple configuration that is durable even when used to circulate the generated liquid. It becomes feasible.

It is a perspective view (schematic diagram) showing an example of a fine bubble generating device concerning a first embodiment of the present invention. It is a perspective view (schematic diagram) which shows the example of the fine bubble production | generation unit of the fine bubble production | generation apparatus shown in FIG. FIG. 3 is an exploded view (schematic diagram) of the fine bubble generating unit shown in FIG. 2. FIG. 3 is an exploded view (schematic diagram) of the fine bubble generating unit shown in FIG. 2. FIG. 3 is an exploded view (schematic diagram) of the fine bubble generating unit shown in FIG. 2. It is a top view (schematic diagram) which shows the example of the blade member of the fine bubble production | generation apparatus shown in FIG. FIG. 7 is a front view (schematic diagram) showing an example of a blade member shown in FIG. 6. FIG. 7 is a bottom view (schematic diagram) showing an example of the blade member shown in FIG. 6. It is the sectional view on the AA line in FIG. It is explanatory drawing for demonstrating the structure and effect | action of a microbubble production | generation apparatus shown in FIG. It is a photograph which shows the liquid after a process supplied by the microbubble production | generation apparatus shown in FIG. It is a photograph which shows the liquid after a process supplied by the microbubble production | generation apparatus shown in FIG. It is the schematic which shows the example of the microbubble production | generation apparatus which concerns on 2nd embodiment of this invention. It is the schematic which shows the example of the fine bubble production | generation unit of the fine bubble production | generation apparatus shown in FIG.

(First embodiment)
Hereinafter, with reference to drawings, fine bubble generating device 1 concerning an embodiment of the present invention is explained in detail. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiments, and the repetitive description thereof may be omitted.

  The fine bubble generating device 1 is a fine bubble generating device that discharges a liquid in a state where a gas such as ozone or air is mixed with the liquid as bubbles having a predetermined diameter. According to the present apparatus, bubbles (referred to as “fine bubbles” in the present application, but generally “micro-nano bubbles”, “ultra fine bubbles”, etc.) whose diameter has been reduced to a predetermined diameter (as an example, about 1 [μm] or less). In this case, a mixed liquid is obtained. Therefore, for example, a high purification action can be obtained by applying the liquid as sewage and human waste, or a high cleaning action of an industrial product such as a substrate can be obtained by applying the liquid as a cleaning liquid. It is possible to obtain extremely useful effects in the field. Furthermore, it has been found that useful effects can be obtained not only in the industrial field but also in various fields such as food, medicine, agriculture, and fishery.

  Here, a perspective view (schematic diagram) of the fine bubble generating device 1 (1A) according to the first embodiment is shown in FIG. This fine bubble generating apparatus 1 (1A) has a configuration in which a plurality of fine bubble generating units 10 are continuously arranged. This fine bubble generating unit 10 can obtain the action of taking in the pre-process liquid and the pre-process gas even when used alone and discharging the post-process liquid in a mixed state as the post-process gas in the form of fine bubbles. It can be done. A plurality of the fine bubble generating units 10 are continuously disposed, and the processed liquid in a state of being mixed as a processed gas that forms an aspect of the fine bubbles discharged from the discharge port in one fine bubble generating unit, By using the pre-treatment liquid and pre-treatment gas taken from the opening in another adjacent micro-bubble generating unit and continuously performing the processing, the micro-bubble diameter is reduced to about 1 [μm] or less. In addition, a large amount of the fine bubbles can be generated extremely efficiently.

  As an example, the micro-bubble generating device 1 (1A) includes six micro-bubble generating units 10 in the order of 10B, 10C, 10D, 10E, and 10F from the micro-bubble generating unit 10A on the upstream side toward the downstream side. Are arranged side by side. However, the number of the fine bubble generating units 10 is not limited to six, and may be appropriately increased or decreased according to various conditions such as the diameter of the fine bubbles to be generated and the required generation amount. Good.

  Examples of the liquid include water, other chemicals, processing liquids (cleaning liquid, polishing liquid, etc.), and liquids to be purified (sewage, manure, etc.). On the other hand, examples of the gas include ozone, air, oxygen, hydrogen, carbon dioxide, nitrogen, and other gases (inert gas, fluorine-based gas).

  First, the configuration of the fine bubble generating unit 10 will be described.

  The fine bubble generating unit 10 includes a first member 12 having an opening into which a pre-processing liquid and a pre-processing gas are taken in, and a cylindrical processing container 20 disposed so that one side is closed by the first member 12. The second member 14 that closes the other side of the processing container 20 is provided. As an example, the first member 12 and the second member 14 are substantially circular plate-like members, and the processing container 20 is a cylindrical member. In any case, assuming that ozone may be used as the pre-treatment gas, it is configured using SUS316 having ozone durability. However, the present invention is not limited to this, and materials may be appropriately selected according to the pre-treatment liquid and the pre-treatment gas.

  In the present embodiment, a cylindrical storage container 16 that stores the processing container 20 and the second member 14 is further provided, and the first member 12 is arranged so as to close the opening on one side of the storage container 16. It is installed. As an example, the storage container 16 is configured using a transparent resin material (vinyl chloride resin or the like). According to this, confirmation of the state of the treated liquid flowing through the inside, that is, whether fine bubbles are generated or reach a predetermined diameter, or a desired change (purification, etc.) in the liquid proceeds. It can be confirmed visually from the outside of the container. However, the constituent material is not limited to the above, and a metal material or the like may be used.

  Here, FIG. 2 shows a state where the processing container 20 is stored in the storage container 16. At this time, one end side (the lower end side in the drawing) of the processing container 20 is closed by the first member 12, and the other end side (the upper end side in the drawing) is closed by the second member 14. Further, the first member 12 is configured to close one end side (the lower end side in the drawing) of the storage container 16.

  Furthermore, in order to explain the internal structure more easily, exploded views are shown in FIGS. First, FIG. 3 shows a state where the container 16 is removed from the state shown in FIG. FIG. 4 shows a state where the second member 14 is removed from the state shown in FIG. A blade member 30 described later is accommodated in the processing container 20. Next, FIG. 5 shows a state in which the blade member 30 is removed from the state of FIG.

  As shown in FIG. 5, the first member 12 is provided with an inflow port 12 a formed so as to penetrate therethrough as an opening through which the pre-treatment liquid and the pre-treatment gas are taken. In the present embodiment, one inflow port 12a is provided as a common opening through which both the pre-treatment liquid and the pre-treatment gas are taken. That is, the pre-treatment liquid is configured to reach the inflow port 12a in a state where the pre-treatment gas is delivered on the upstream side. More specifically, the pedestal 50 shown in FIG. 1 is provided with a liquid channel 52 to which a pre-treatment liquid is supplied and a gas channel 54 to which a pre-treatment gas is supplied. At this time, the gas flow path 54 communicates with the liquid flow path 52, and the pre-treatment gas is sent into the pre-treatment liquid flowing through the liquid flow path 52. As an example, the base 50 is configured using a resin material (vinyl chloride resin or the like).

  As a modification, an opening for taking in the pre-treatment liquid and an opening for taking in the pre-treatment gas are separately provided in the first member 12, and fine bubbles are generated while mixing both in the treatment container 20. It is good also as a structure which performs a process (not shown).

  On the other hand, as shown in FIG. 5, the processing container 20 is provided with a discharge port 20b that discharges the processed liquid in a mixed state as a processed gas in the form of fine bubbles to the outside (microbubble generation). The action will be described later). In the present embodiment, the processing container 20 includes a cylindrical portion 20B having an internal space 20A, and the discharge port 20b is provided through the peripheral wall portion 20a of the cylindrical portion 20B in the radial direction.

  Next, the blade member 30 that performs the flow of liquid will be described. The blade member 30 is rotatably disposed in the internal space 20 </ b> A of the processing container 20, and is configured to be connected to the main shaft 24 and rotationally driven. The structure of the blade member 30 is shown in FIG. 6 (plan view), FIG. 7 (front view), FIG. 8 (bottom view), and FIG. 9 (sectional view taken along line AA in FIG. 7). An arrow B in each figure is the rotation direction of the blade member 30. In order to make the structure easy to understand, only some blades (corresponding to the blades 36A and 36B in FIG. 9) are shown in FIG.

  The blade member 30 includes a disk-shaped first plate 32 and a second plate 34, and a plurality of plate-shaped blades 36 disposed therebetween. Both are configured using SUS316 having ozone resistance, but are not limited thereto.

  Here, the main shaft 24 is inserted into and fixed to the main shaft connecting hole 32a formed through the center of the plate surface of the first plate 32 and the main shaft connecting hole 34a formed through the center of the plate surface of the second plate 34. The Thus, the blade member 30 is connected to the main shaft 24 and is driven to rotate as the main shaft 24 rotates. The second member 14 of the processing container 20 is provided with a main shaft insertion hole 14b and is sealed by a seal member (not shown). Moreover, about the 1st member 12, when inserting the main axis | shaft 24, the inflow port 12a is shared as a main axis insertion hole.

  Further, the blade 36 is configured to be fixed to both the first plate 32 and the second plate 34, and is disposed such that an angle α formed by the plate surface with respect to the radial direction forms a predetermined angle. As an example, 10 [°] ≦ α ≦ 80 [°] is set, and α = 60 [°] is preferable. However, the present invention is not limited to the above-described configuration, and any shape that can cause liquid flow other than the flat plate shape may be used.

  The operation of the blade member 30 having the above configuration will be described. When the blade member 30 is rotationally driven by the main shaft 24 in the direction of arrow B, the blade 36 has an action of pushing away the liquid, and a liquid flow is generated. More specifically, as indicated by an arrow C in the figure, the liquid is sucked into the blade member 30 from the suction port 32b formed near the center of the plate surface of the first plate 32, and the adjacent blade 36 and It passes between the blades 36 and is sent out of the blade member 30 from the outlet 30a located at the radial end thereof. The delivered liquid becomes a swirl flow that flows along the direction of arrow B by the action of the blade 36 that pushes the liquid while rotating.

  Next, the processing container 20 has a plate-shaped collision plate 22 disposed in a direction intersecting with the liquid flow direction (direction along the arrow B direction). The collision plate 22 according to the present embodiment has a plurality (for example, about 12) on the inner surface of the peripheral wall portion 20a of the cylindrical portion 20B so that the plate surface is in a direction along the radial direction, but is not limited thereto. Is not provided). As a modification, the collision plate may be provided on the first plate 32 or the second plate 34 (not shown).

  Here, the fine bubble generating action will be described.

  First, the pre-processing liquid is stored in the storage container 16 and the processing container 20. For example, the pre-treatment liquid may be introduced from the inflow port 12a by immersing the entire fine bubble generating unit 10 in the pre-treatment liquid, or the pre-treatment liquid is supplied to the inflow port 12a (or the liquid channel 52). The pre-treatment liquid may be allowed to flow by connecting a pipe to be used.

  Next, the blade member 30 in the processing container 20 is rotationally driven by driving the main shaft 24 by a driving source (not shown) such as a motor. As an example, the rotational speed of the main shaft 24 is set to about 500 to 5000 [rpm].

  Thereby, a liquid flow is generated in the internal space 20 </ b> A of the processing container 20. As described above, the pre-treatment liquid is sucked into the blade member 30 from the suction port 32 b of the first plate 32 by the rotation of the blade member 30. Here, the pre-treatment liquid to be sucked is supplied from the inlet 12a of the first member. In the present embodiment, as described above, the pre-treatment gas is supplied (inflowed) into the processing container 20 from the inflow port 12a in a state where the pre-treatment gas is sent and mixed with the pre-treatment liquid.

  On the other hand, the liquid before processing sent out of the blade member 30 from the outlet 30a by the rotation of the blade member 30 is indicated by an arrow between the radially outer edge portion of the blade member 30 and the inner surface of the peripheral wall portion 20a of the processing container 20. It becomes a swirl flow that flows along the B direction.

  Further, the swirl flow generated between the outer edge portion of the blade member 30 and the peripheral wall portion 20a of the processing container 20 collides with a collision plate 22 provided on the peripheral wall portion 20a. Here, the pre-treatment liquid before colliding with the collision plate 22 is in a state in which the pre-treatment gas is mixed as bubbles having a diameter (for example, a size of millimeter) larger than a predetermined diameter required by the place. Yes. The pre-processing liquid mixed with such a pre-processing gas collides with the plate surface of the collision plate 22 (here, the surface 22a facing the swirl flow), thereby causing a shearing action. At this time, since the shearing action also occurs in the bubbles of the pre-treatment gas contained in the pre-treatment liquid, the diameter of the bubbles becomes small, and the action of making fine bubbles occurs. In this way, a treated liquid in a state of being mixed as a treated gas in the form of fine bubbles is obtained.

  At the same time, the pre-treatment liquid mixed with the pre-treatment gas is considered to cause cavitation at the position of the back surface 22b of the collision plate 22. The generation conditions vary depending on the flow rate of the liquid before treatment, the mixing of the gas before treatment, and the like. It is considered that a post-treatment liquid in a state of being mixed as a post-treatment gas in the form of fine bubbles is also obtained by the action of this cavitation generation.

  Temporarily, the discharge port 20b is formed in the peripheral wall part 20a of the processing container 20 in the position corresponding to the back surface 22b of the collision plate 22 (that is, the downstream position in the liquid flow (swirl flow) direction with respect to the collision plate 22). As a result, a liquid flow toward the discharge port 20b, that is, a liquid flow in the radial direction parallel to the back surface 22b occurs, and there may be a problem that the occurrence of cavitation on the back surface 22b of the collision plate 22 is reduced or eliminated.

  Therefore, in the present embodiment, the discharge port 20b is adjacent to the upstream side in the liquid flow (swirl flow) direction with respect to all or a part of the collision plate 22 in the peripheral wall portion 20a of the cylindrical portion 20B. It is set as the structure formed by penetrating through. According to this, the above-mentioned problem can be solved, and the colliding liquid (in a state containing the treated liquid) is guided to the discharge port by the plate surface (surface 22a) of the collision plate 22. Thus, it is possible to cause an action to be sent out of the processing container 20.

  In addition, since the collision plate 22 can increase the amount of collision with the pre-treatment liquid by being disposed so that the plate surface is parallel to the radial direction (that is, orthogonal to the inner surface of the peripheral wall portion 20a), the collision plate 22 is fine. It is thought that the bubble generating action can also be increased. However, the present invention is not limited to this configuration, and a fine bubble generating action is obtained as long as the plate surface is arranged so as to have a component that intersects the liquid flow direction (direction along arrow B). It is possible.

  Next, the treated liquid in a state of being mixed as a treated gas in the form of fine bubbles discharged from the discharge port 20b of the peripheral wall portion 20a of the processing container 20 is the storage container 16 in which the processing container 20 is stored. Stored inside. Thereafter, it is allowed to flow out from the other end side of the container 16 and used as it is as a processed liquid as it is, or the whole or a part is circulated and used again as a pre-processing liquid from the inlet 12a. Also good.

  As described above, according to the fine bubble generating unit 10, the fine bubbles that have been refined to a predetermined diameter (for example, about 1 [μm] or less) by taking the post-treatment liquid in which the pre-treatment gas is sent out. It becomes possible to supply a post-treatment liquid mixed as a post-treatment gas.

  However, when supplying the processed liquid using only one fine bubble generating unit 10, fine bubbles having a predetermined diameter (for example, about 1 [μm] or less) can be obtained sufficiently with respect to the required amount. There may also be cases where it is not (not included). In such a case, the effect of the treated liquid mixed with fine bubbles may not be sufficiently obtained.

  The microbubble generator 1 (1A) according to the present embodiment has been devised to solve this problem. The fine bubble generating apparatus 1 (1A) has a configuration in which a plurality of fine bubble generating units 10 are continuously arranged. Here, the effect | action of the fine bubble production | generation apparatus 1 (1A) is demonstrated using explanatory drawing (schematic diagram) of FIG. In addition, the dot (black dot) in a figure represents the bubble.

  10 is arranged in parallel in the order of 10B, 10C, 10D, and 10E from the fine bubble generation unit 10A on the upstream side toward the downstream side, as in FIG. In the most downstream position, the microbubble generating unit is configured as a six-stage laminated structure with 10F. However, the number of layers is not limited to six, and the number of layers is appropriately set according to various conditions. In the present embodiment, one storage container 16 (same shape member) is interposed between the base 50 and the fine bubble generating unit 10A at the most upstream position and used as an extension of the liquid flow path 52. . However, the container 16 may be omitted and the liquid channel 52 and the inflow port 12a may be directly connected (not shown).

  The processed liquid discharged from the discharge port 20b and stored in the storage container 16 in the fine bubble generating unit (10A in the figure as an example) on the upstream side (a state in which both the pre-processing gas and the post-processing gas are included) Is used as the pre-treatment liquid taken from the inlet 12a in the adjacent downstream fine bubble generating unit (for example, 10B in the figure). According to this, rather than the post-processing liquid discharged from the discharge port 20b of the upstream fine bubble generating unit (for example, 10A in the figure), the downstream fine bubble generating unit (for example, 10B in the figure) adjacent to the downstream side. In the processed liquid discharged from the discharge port 20b, the diameter of the fine bubbles can be reduced and the amount of the fine bubbles can be increased. Therefore, after the process discharged from the discharge port 20b of the fine bubble generation unit (for example, 10F in the figure) at the most downstream position by disposing a plurality of the fine bubble generation units 10 and continuously performing the processing. For liquids, it is possible to reduce the diameter of all (or almost all) of the included fine bubbles to about 1 [μm] or less, and to produce a large amount of such fine bubbles very efficiently. It becomes possible to do.

  In addition, in the fine bubble production | generation apparatus 1 (1A) which concerns on this embodiment, after a continuous process is performed in each parallel microbubble production | generation unit 10, a fine bubble is finally mixed as processed gas. The outflow port 16b through which the processed liquid is discharged is formed so as to penetrate the peripheral wall portion 16a of the storage container 16 of the fine bubble generating unit 10F at the most downstream position. However, the present invention is not limited to this, and is configured to be formed by penetrating through the lid member 56 that is fitted to close the other side (here, the other end portion) of the storage container 16 of the fine bubble generating unit 10F. It is good (not shown). In addition, the cover member 56 is comprised using the resin material (vinyl chloride resin etc.) as an example.

  Here, in the fine bubble generating apparatus 1 (1A) according to the present embodiment, a mode of fine bubbles obtained by performing processing using water as an example of the pre-treatment liquid and using air as an example of the pre-treatment gas. FIG. 11 shows a photograph of the treated liquid in a state of being mixed as a treated gas that forms the following. As shown in this photograph, for example, by irradiating with a laser beam having a wavelength of 532 [nm], it can be confirmed that fine bubbles are mixed in the liquid after the treatment. That is, the laser light irradiated to the processed liquid is reflected by the fine bubbles in the processed liquid, and the light locus can be visually recognized. In a state where the laser beam is not irradiated (or a portion where the laser beam is not irradiated), it is visually recognized as a transparent state by human vision. Incidentally, it has been confirmed that the liquid after treatment is visually recognized as a cloudy state when the diameter of the fine bubbles is reduced to about several tens [μm]. Further, in the case of only water that does not contain fine bubbles, the locus of the laser beam cannot be almost visually recognized.

  An enlarged photograph of the laser beam passage is shown in FIG. This photograph shows a state after more than 6 months have passed since the processed liquid that was processed in the fine bubble generating device 1 was collected, but the fine bubbles with a predetermined diameter (for example, about 1 [μm] or less) Was confirmed to be present in the treated liquid without disappearing while continuing Brownian motion in an open beaker without being affected by buoyancy.

  In addition, this inventor experimented using various gas (oxygen, hydrogen, nitrogen, etc.) as gas before a process, and has confirmed the production | generation of the fine bubble similar to the above. Therefore, it is possible to obtain extremely useful effects in various fields such as industry, food, medical care, agriculture, and fishery by appropriately selecting the pre-treatment gas and the pre-treatment liquid according to the application.

  As another structural feature, the fine bubble generating device 1 (1A) according to the present embodiment includes the first member 12 in the downstream fine bubble generating unit (for example, 10B in the figure) as shown in FIG. The other end side of the container 16 in the fine bubble generating unit (for example, 10A in the figure) on the upstream side is shared as a member for closing. According to this, it becomes possible to simplify the structure of the whole fine bubble production | generation apparatus 1 (1A), and to form compactly.

  Furthermore, as shown in FIG. 10, the drive mechanism can be simplified by adopting a configuration in which all the blade members 30 in the plurality of fine bubble generating units 10 </ b> A to 10 </ b> F are rotated coaxially by one main shaft 24. It becomes.

  As described above, the fine bubble generating device 1 (1A) according to the present embodiment has an extremely simple overall structure and a small number of parts, so that the manufacturing cost can be reduced and maintenance is facilitated.

  In the plurality of fine bubble generating units 10A to 10F, the processed liquid in a state of being mixed as the processed gas in the form of fine bubbles discharged from the discharge port 20b of the final fine bubble generating unit 10F is first If the microbubble generation unit 10A is used by being circulated as a part or all of the pre-treatment liquid taken from the opening (inflow port 12a), the above-described effects can be further enhanced. Therefore, in particular, when applied to sewage and manure as a pre-treatment liquid and continuously circulated for treatment, an extremely high purification effect can be obtained.

(Second embodiment)
Then, the microbubble generator 1 (1B) which concerns on 2nd embodiment of this invention is demonstrated. The fine bubble generating device 1 (1B) according to the present embodiment has the same basic configuration as the fine bubble generating device 1 (1A) according to the first embodiment described above. There is a difference in the configuration. Hereinafter, the present embodiment will be described focusing on the difference.

  FIG. 13 shows a schematic diagram of the fine bubble generating device 1 (1B) according to the second embodiment. In the present embodiment, with respect to the discharge port in the processing container 20, the discharge port 20b penetratingly formed in the peripheral wall portion 20a in the first embodiment is eliminated, and the other side (here, the other end portion) of the processing container 20 is closed. It is set as the structure provided as the discharge port 14a penetrated and formed in the plate surface (for example, center part periphery) of the 2nd member 14 to do. In addition, the code | symbol 56a is an outflow port in this embodiment.

  According to this configuration, as shown in FIG. 13, the discharge port 14a of the fine bubble generating unit on the upstream side (for example, 10G in the figure) and the adjacent fine bubble generating unit on the downstream side (for example, 10H in the figure). ) Inflow port 12a can be realized (for example, directly connected). Therefore, since the storage container 16 provided in the first embodiment can be omitted, the entire apparatus can be further simplified.

  Here, the internal structure of the fine bubble generating unit 10 constituting the fine bubble generating device 1 (1B) according to the present embodiment is shown in FIG. As described above, in the present embodiment, the post-processing liquid discharge port 14 a that has been subjected to processing (microbubble generation processing) in the processing container 20 is not the peripheral wall portion 20 a of the processing container 20 but the other side of the processing container 20. Due to the configuration of the second member 14 that closes the side (here, the other end portion), the configuration of the blade member 30 also differs from that of the first embodiment (in FIG. 14). The blade 36 of the blade member 30 of FIG. 6 is shown by 36A and 36B corresponding to FIG.

  More specifically, the outer edge portion of the first plate 32 of the blade member 30 is formed in a shape extending to a position close to the inner surface of the peripheral wall portion 20a so as to overlap the collision plate 22 in the radial direction. According to this, it is possible to prevent (suppress) that the treated liquid generated by colliding with the collision plate 22 flows backward toward the inlet 12a.

  On the other hand, the outer edge portion of the second plate 34 of the blade member 30 is close to the radial end portion (center side end portion) of the collision plate 22 so as not to overlap the collision plate 22 in the radial direction. It is formed in the shape to fasten. According to this, the processed liquid generated by colliding with the collision plate 22 can flow out between the second plate 34 of the blade member 30 and the second member 14, and is directed toward the discharge port 14 a. Liquid flow can occur.

  The same effect as the fine bubble generating device 1 (1A) according to the first embodiment can be obtained also by the fine bubble generating device 1 (1B) according to the second embodiment having such a configuration.

  As described above, according to the fine bubble generating apparatus according to the present invention, the fine liquid that has been refined to a predetermined diameter (for example, about 1 [μm] or less) by taking in the liquid after treatment and the gas before treatment. It becomes possible to supply a post-treatment liquid in which bubbles are mixed as a post-treatment gas. Furthermore, it becomes possible to supply fine bubbles contained in the treated liquid efficiently and in a large amount.

  In addition, it is possible to perform the circulation process by taking again the processed liquid that has flowed out from the outlet of the fine bubble generating device as the pre-processing liquid from the inlet of the fine bubble generating device. Therefore, unlike the conventional apparatus, there is no need to provide a pump as a driving source for circulation processing, and as a result, problems such as seal deterioration in the pump can be solved. That is, it is possible to generate a liquid in which an activated gas exemplified by ozone is mixed as fine bubbles, and it is possible to realize an apparatus having durability even when used to circulate the generated liquid. This is extremely suitable particularly for applications in which ozone is used to purify sewage, manure, etc. by circulation treatment.

  Further, the fine bubble generating apparatus according to the present invention has an extremely simple overall structure and a small number of parts, so that the manufacturing cost can be reduced and maintenance is easy.

  The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the present invention.

1, 1A, 1B Fine bubble generation device 10, 10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H, 10I, 10J, 10K, 10L Fine bubble generation unit 12 First member 12a Inlet (opening)
14 Second member 14a Discharge port 16 Storage container 16b Outlet 20 Processing container 20A Inner space 20B Cylindrical portion 20a Peripheral wall portion 20b Discharge port 22 Collision plate 24 Main shaft 30 Blade member 30a Outlet 32 First plate 34 Second plate 34b Suction Mouth 36 blade 50 pedestal 56 lid member

Claims (7)

A container,
A first member that closes one side of the container and has an opening through which pre-treatment liquid and pre-treatment gas are taken; and
A cylindrical processing container disposed so that one side is closed by the first member;
A second member for closing the other side of the processing container;
A blade member that is rotatably arranged inside the processing vessel, and that allows liquid flow by rotation,
The processing container includes a collision plate disposed in a direction intersecting with the liquid flow direction, and the treated container in a state of being mixed as a treated gas in the form of fine bubbles. A fine bubble generating unit having a discharge port for discharging inside. A processing vessel having an internal space and having an opening into which the pre-processing liquid and the pre-processing gas are taken; and
A blade member that is rotatably disposed in the internal space of the processing vessel, and that allows liquid flow by rotation, and
The processing container has a collision plate disposed in a direction intersecting with the liquid flow direction, and discharges the processed liquid in a mixed state as a processed gas in the form of fine bubbles to the outside. A fine bubble generating unit characterized by having a discharge port. The processing container is provided with a cylindrical portion having the internal space,
3. The fine bubble generating unit according to claim 2, wherein a plurality of the collision plates are arranged on the inner surface of the peripheral wall portion of the cylindrical portion so that the plate surface is in a direction along the radial direction. The discharge port is provided to be formed so as to penetrate in a position adjacent to the upstream side in the liquid flow direction with respect to all or a part of the collision plate in the peripheral wall portion of the cylindrical portion. The fine bubble generating unit according to claim 3. A plurality of the fine bubble generating units according to any one of claims 1 to 4 are continuously arranged,
A fine bubble generating apparatus, wherein a discharge port of one fine bubble generating unit is arranged to communicate with an opening of another adjacent fine bubble generating unit. The fine bubble generating apparatus according to claim 5, further comprising a main shaft that coaxially rotates all the blade members in the plurality of fine bubble generating units. In the plurality of fine bubble generating units arranged in succession, the processed liquid in a state of being mixed as the processed gas in the form of fine bubbles discharged from the discharge port of the final fine bubble generating unit is first 7. The fine bubble generating apparatus according to claim 5, wherein the fine bubble generating device is used as a part or all of the pre-treatment liquid taken from the opening in the fine bubble generating unit.