JP2014226568A - Gas-liquid mixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas-liquid mixer capable of preparing liquid containing air bubbles of nano-level which can enlarge an application range on industry and, at the same time, can prevent air entrainment.SOLUTION: Fine air bubble generation means which turns supplied gas into fine air bubbles to diffuse the air bubbles into liquid is arranged on the neighborhood of a suction port part of a submerged pump immersed under liquid and, on the other hand, gas-liquid mixing means which further makes the fine air bubbles finer and evenly mixes the fine air bubbles with the liquid is connected to an ejection port part of the submerged pump. Therein, the gas-liquid mixing means includes a gas-liquid supply path communicated with the ejection port part of the submerged pump and dispersion-mixing channels which are communicated with the gas-liquid supply path, cause the air bubbles and liquid to flow while meandering the air bubbles and liquid, and make the air bubbles fine to perform dispersion and mixing into liquid, and a number of dispersion-mixing channels are communicated while leaving intervals in the axial direction and in the circumferential direction of the gas-liquid supply path and cause liquid containing air bubbles to flow out from a terminal part of each dispersion-mixing channel.

Description

  The present invention relates to a gas-liquid mixing apparatus that refines a gas to a nano level and mixes it with a liquid to generate a nanobubble-containing liquid.

  Conventionally, there exists a thing disclosed by patent document 1 as one form of a gas-liquid mixing apparatus. That is, Patent Document 1 discloses a gas-liquid mixing apparatus configured by connecting a gas-liquid mixing means that refines bubbles and uniformly mixes with a liquid to a discharge port portion of a submersible pump immersed in the liquid. ing.

  In such a gas-liquid mixing device, gas and liquid are sucked from the suction port of the submersible pump, and gas and liquid are pumped from the discharge port of the submersible pump to the gas-liquid mixing unit. A liquid (gas-liquid mixture) containing fine bubbles (several μ to several tens μ) is generated, and the gas-liquid mixture is discharged to the bottom of the dam to enable aeration processing.

JP 2003-145190 A

  However, in the gas-liquid mixing apparatus disclosed in Patent Document 1, even though the bubbles generated by the gas-liquid mixing means are fine (several μ to several tens μ), they are on the micro level and not on the nano level. The use was limited to aeration treatment to the dam bottom. In other words, the range of industrial use was limited. In addition, when large bubbles are sucked from the suction port of the submersible pump, there is a problem that the submersible pump tends to cause air biting. In other words, when the submersible pump is engaged with air, the submersible pump is in a state close to idling, which causes a significant decrease in pump efficiency and the occurrence of cavitation.

  Accordingly, the present invention has an object to provide a gas-liquid mixing device that can generate a nano-level bubble-mixed liquid that can expand the industrial application range and can prevent air entrainment. And

  In the gas-liquid mixing apparatus according to the first aspect of the present invention, the fine bubble generating means for forming the supplied gas into fine bubbles and diffusing in the liquid is provided in the vicinity of the suction port of the submersible pump immersed in the liquid. On the other hand, the discharge port of the submersible pump is connected to a gas-liquid mixing means that further refines the fine bubbles and uniformly mixes with the liquid. The gas-liquid mixing means is connected to the discharge port of the submersible pump. A gas-liquid supply path that communicates with the gas-liquid supply path, and a dispersion / mixing flow path that communicates with the gas-liquid supply path while causing the bubbles and the liquid to meander while flowing, and finely disperses and mixes the bubbles in the liquid. A large number of dispersion / mixing channels are communicated at intervals in the axial direction and circumferential direction of the gas-liquid supply channel, and the liquid mixed with bubbles is allowed to flow out from the terminal portion of each dispersion / mixing channel. And

  In such a gas-liquid mixing apparatus, a submersible pump is immersed in a liquid to be mixed, and gas supplied from the outside is converted into macro-level fine bubbles by the fine bubble generating means and diffused into the liquid. Then, the liquid mixed with bubbles is sucked from the suction port of the submersible pump, and the liquid mixed with bubbles is pumped from the discharge port of the submersible pump to the gas-liquid mixing unit. It can be finely divided to a level and uniformly mixed with a liquid.

  In other words, the gas is made fine in advance before being sucked into the submersible pump to form macro-level fine bubbles, thereby preventing air biting of the submersible pump and removing macro-level fine bubbles after discharging from the submersible pump. Since it can be further refined by the gas-liquid mixing means, most of the bubbles can be refined to the nano level in a stepwise and steady manner.

  The gas-liquid mixing means disperses and mixes the gas and liquid in a gas-liquid supply path communicating with the discharge port of the submersible pump while causing the bubbles and liquid to meander and finely disperse and mix the bubbles in the liquid. Gas-liquid mixing means because a large number of passages communicate with each other at intervals in the axial direction and the circumferential direction of the gas-liquid supply path so that the liquid mixed with bubbles flows out from the terminal end of each dispersion / mixing flow path. Can be reduced, and the flow rate (efficiency) of the liquid in which nano-level bubbles are uniformly mixed can be increased.

  Here, for example, oxygen gas, nitrogen gas, ozone gas, carbon dioxide gas, or air can be adopted as the gas, and for example, water can be adopted as the liquid. And when water and oxygen gas, nitrogen gas, ozone gas, carbon dioxide gas, or air are mixed, the nanobubble containing water containing the nanobubble which uses these gases as a component can be produced | generated.

  Thus, since the gas-liquid mixing apparatus which can produce | generate the liquid of the nano level desired bubble mixing can be employ | adopted for a suitable industrial field | area, it can expand the industrial utilization range.

  A gas-liquid mixing apparatus according to a second aspect of the present invention is the gas-liquid mixing apparatus according to the first aspect of the present invention, wherein the dispersion / mixing flow path includes a plate-shaped first element and a first element arranged in an opposing manner. While forming between the two elements facing each other, the dispersion / mixing flow path serves as an inflow port between the start edge of both elements, and serves as an outflow port between the end edges of both elements. A plurality of concave portions having the same depth and size are formed on the surface from the inlet side toward the outlet side, and the opposing concave portions are arranged at different positions so as to communicate with each other. Between the recesses facing each other in the recess group, the bubble and the liquid are formed so as to flow from the inlet side toward the outlet side while repeating merging and splitting while meandering.

  In such a gas-liquid mixing apparatus, a dispersion / mixing flow path that can reduce pressure loss can be formed compactly, and a large number of compactly formed dispersion / mixing flow paths can be formed. It is possible to increase (efficiency) the outflow amount of the liquid in which the level bubbles are uniformly mixed.

  A gas-liquid mixing apparatus according to a third aspect of the invention is the gas-liquid mixing apparatus according to the first or second aspect of the invention, wherein the submersible pump, the fine bubble generating means, and the gas-liquid mixing means are provided in the housing case. The housing case is provided with a liquid inflow hole through which liquid flows, a cable insertion portion for inserting a power transmission cable, and a pipe connection portion for connecting a gas supply pipe, and is accommodated through the cable insertion portion. A power transmission cable is connected to the submersible pump in the case from outside the housing case, and a gas supply pipe is connected to the fine bubble generating means in the housing case from the outside of the housing case through a pipe connection portion.

  In such a gas-liquid mixing apparatus, a nano-level bubble mixed liquid can be discharged into the liquid by immersing the storage case containing the submersible pump, the fine bubble generating means, and the gas-liquid mixing means in a liquid such as a water tank. it can. At this time, the power transmission cable is connected from the outside of the housing case to the submersible pump in the housing case through the cable insertion portion formed in the housing case, and to the fine bubble generating means in the housing case through the pipe connection portion formed in the housing case. By connecting the gas supply pipe from the outside of the housing case, it is possible to ensure the supply of electricity and gas from the power source and the gas supply source to the submersible pump.

  Therefore, if it is a place where a power source and a gas supply source can be ensured, the gas-liquid mixing process can be performed on the mixing target by easily carrying in the gas-liquid mixing device. Therefore, even if it is a moving vehicle, if the battery and the gas supply source are mounted on the vehicle, for example, the gas-liquid mixing device can also be used for a fish tank for a live fish car or a fish tank for a fishing boat. Can be easily carried in and immersed, and a gas-liquid mixed liquid can be generated.

  According to the present invention, the following effects are produced. That is, according to the present invention, it is possible to generate a liquid mixed with nano-level bubbles that can expand the industrial application range, and it is possible to prevent air biting of the submersible pump. Since the gas-liquid mixing means can reduce the pressure loss in the gas-liquid mixing means, the power consumption of the submersible pump that pumps the liquid to the gas-liquid mixing means can be reduced, and the nano-level bubbles are uniform. It is possible to increase (efficiency) the outflow amount of the liquid mixed with.

Front side perspective explanatory drawing of the gas-liquid mixing apparatus which concerns on 1st Embodiment. Cross-sectional right side explanatory drawing of the gas-liquid mixing apparatus which concerns on 1st Embodiment. II sectional view explanatory drawing of FIG. II-II sectional view explanatory drawing of FIG. Cross-sectional side explanatory drawing of a gas-liquid mixing means. Sectional plane explanatory drawing (a), partial expansion explanatory drawing (b) of a gas-liquid mixing means, and the III-III line sectional explanatory drawing (c) of (b). The top view (a), side view (b), and bottom view (c) of a gas-liquid supply path formation case. Sectional side view (a) and bottom view (b) of mixed gas / liquid outlet passage forming case. Front explanatory drawing (a) of a 1st element, IV-IV sectional view (b) of (a), and back view (c). Front explanatory drawing (a) of a 2nd element, the VV sectional view (b) of (a), and a rear view (c). Front explanatory drawing of a mixing unit. The perspective explanatory view of the gas-liquid mixing device concerning a 2nd embodiment. VI-VI line cross-section explanatory drawing of FIG. FIG. 14 is a sectional view taken along line VII-VII in FIG. 13. Cross-sectional enlarged plan explanatory view (a) and cross-sectional enlarged side explanatory view (b) of the mixing unit. The perspective explanatory view of the gas-liquid mixing device concerning the modification of a 2nd embodiment. VIII-VIII sectional view explanatory drawing of FIG. IX-IX line sectional explanatory drawing of FIG. A partially enlarged plan explanatory view (a) and a cross-sectional enlarged side explanatory view (b) of the mixing unit.

  Hereinafter, a first embodiment, a second embodiment, and a modification of the second embodiment according to the present invention will be described with reference to the drawings.

[Description of Gas-Liquid Mixing Device According to First Embodiment]
(Schematic description of the entire gas-liquid mixing device)
1-4 is the gas-liquid mixing apparatus which concerns on 1st Embodiment, and the gas-liquid mixing apparatus M is immersed in the liquid in the storage case 10, as shown in FIGS. Submersible pump P to be used, fine bubble generating means 20 that makes the supplied gas into fine bubbles and diffuses into the liquid, and gas-liquid mixing means that further refines the fine bubbles and uniformly mixes with the liquid 30 is housed and configured.

  The mixing target is a gas and a liquid. As the gas, for example, oxygen gas, nitrogen gas, ozone gas, carbon dioxide gas, or air can be adopted, and as the liquid, for example, water or seawater can be adopted. it can. And when water and oxygen gas, nitrogen gas, ozone gas, carbon dioxide gas, or air are mixed, the nanobubble containing water containing the nanobubble which uses these gases as a component can be produced | generated. The manner in which these gases are adopted will be specifically described as follows.

  (1) Since nanobubble-containing water containing nanobubbles containing oxygen gas as a component can increase dissolved oxygen in the water, it should be used for aquaculture using oxygen gas, live fish farming, live fish transport, and wastewater treatment. Can do. At this time, by immersing the gas-liquid mixing device in the tank for aquaculture, in the tank for live fish farming, in the tank for transporting live fish, in the tank for wastewater treatment, the water in each tank It is possible to quickly and easily form nanobubble-containing water containing nanobubbles containing oxygen gas as a component.

  (2) Since the nanobubble-containing water containing nanobubbles containing nitrogen gas as an ingredient has an antioxidant action, it is possible to prevent oxidation of objects (eg, fresh seafood) and products that are vulnerable to oxidation. At this time, for example, by immersing the gas-liquid mixing device in the aquarium containing fresh fish and shellfish, the water in each aquarium is quickly and easily made into nanobubble-containing water containing nanobubbles containing nitrogen gas as a component. Can do.

  (3) Since ozone gas has strong oxidizing power, nanobubble-containing water having strong oxidizing power can be generated, and nanobubbles containing ozone gas as a component stay in nanobubble-containing water for a long time, so that the desired substance is completely removed. Can be oxidized to.

  (4) Since the nanobubble-containing water containing nanobubbles containing carbon dioxide as a component has a cleaning action, an increase in blood flow, and an insulin-like growth factor, this nanobubble-containing water is preferably used as bath water. Moreover, since air exists in large quantities, the material cost of nanobubbles can be suppressed at a low cost.

  As described above, since the gas-liquid mixing apparatus M that can generate a liquid with a desired level of bubbles in the nano level can be used in a suitable industrial field, the industrial application range can be expanded.

(Description of the storage case)
As shown in FIGS. 1 to 4, the housing case 10 is formed by connecting a bottom case forming body 11 formed in a rectangular flat box shape with an upper surface opening to a covering case forming body 12 formed in a rectangular box shape with a lower surface opening. Forming. The front and rear end walls 12a and 12b and the left and right side walls 12c and 12d forming the peripheral wall of the covering case forming body 12 are formed with a large number of liquid inflow holes 13 through which liquid flows. A cylindrical cable insertion portion 14 and a pipe connection portion 15 are respectively provided in the ceiling portion 12e of the covering case forming body 12 so as to penetrate in the vertical direction. The cable insertion portion 14 has a cable insertion hole for inserting the power transmission cable 6. Further, the pipe connection portion 15 has a pipe communication path for connecting the external gas supply pipe 7 and the internal gas supply pipe 22 in communication.

  The submersible pump P is configured such that an impeller accommodating portion 2 that accommodates an impeller (not shown) is continuously provided below a motor accommodating portion 1 that accommodates a motor (not shown), and a leg portion 3 is suspended from the lower end of the impeller accommodating portion 2. doing. The impeller housing portion 2 is formed in a flat container shape, and a suction port portion 4 for sucking fluid (liquid mixed with bubbles in the present embodiment) is formed in a bottom portion in a circular opening shape, while the motor housing portion 1 is formed. In addition, a discharge port portion 5 that discharges fluid is formed in a circular opening shape on the upper surface portion of the bulge portion 2a formed to bulge forward. To the motor of the submersible pump P in the housing case 10, a power transmission cable 6 inserted from the outside of the housing case 10 into the cable insertion portion 14 is connected. The leg 3 of the submersible pump P is fixed to the bottom case forming body 11 in a standing manner via a fixing bracket 8. Reference numeral 9 is a corner protector, and 12f is a handle. By gripping the handle 12f, moving work such as loading and unloading of the gas-liquid mixing device M can be performed easily. Es is a power source that supplies electricity to the submersible pump P through the power transmission cable 6. The submersible pump P rotates the impeller with a motor, thereby sucking fluid from the suction port 4 and discharging fluid from the discharge port 5.

(Explanation of fine bubble generation means)
As shown in FIGS. 2 to 4, the fine bubble generating means 20 includes an air diffuser 21 and an internal gas supply pipe 22 that is connected in communication with the air diffuser 21. The air diffuser 21 is formed of a porous diffused gas 21a made of ceramic or the like in a cylindrical shape, and support pieces 21b and 21b are provided at both ends of the diffused gas 21a. A cylindrical connecting part 21c is projected from the center of one support piece 21b. The inner end of the connecting part 21c communicates with the internal space of the diffused gas 21a and is connected to the outer end of the connecting part 21c. One end of the internal gas supply pipe 22 is externally fitted and connected.

  In the present embodiment, a pair of left and right air diffusers 21, 21 are disposed on the bottom case forming body 11 so as to be positioned on the left and right sides of the legs 3 of the submersible pump P. The connection parts 21c and 21c of both the aeration parts 21 and 21 are projected forward. The internal gas supply pipe 22 has a base end portion connected to the lower end portion of the pipe connection portion 15 provided on the ceiling portion 12e of the covering case forming body 12, and a bifurcated branch branched into a bifurcated shape at the distal end portion. The portions 22a and 22a are formed, and the bifurcated branch portions 22a and 22a are externally fitted and connected to the connecting portions 21c and 21c. A distal end portion of the external gas supply pipe 7 is connected to the upper end portion of the pipe connection portion 15, and a proximal end portion of the external gas supply pipe 7 is connected to the gas supply source As. Then, gas is supplied from the gas supply source As to the external gas supply pipe 7 → the pipe connection portion 15 → the internal gas supply pipe 22 → the bifurcated branch portions 22a and 22a → the connection portions 21c and 21c → the diffused gas 21a and 21a. The qualitative diffused gas 21a, 21a is diffused into the liquid through the surface. At this time, the bubbles diffused from the diffused gases 21a and 21a are refined to a micro level. For example, “Airstone” (trade name) manufactured by New Marines can be used as the air diffuser 21.

(Explanation of gas-liquid mixing means)
The gas-liquid mixing means 30 is connected in an upright manner to the discharge port portion 5 of the submersible pump P as shown in FIGS. 2 to 4. As shown in FIG. 6, the gas-liquid mixing means 30 is connected to the discharge port portion 5. A liquid supply path 31 and a dispersion / mixing flow path 32 that communicates with the gas-liquid supply path 31 and causes the bubbles and the liquid to flow while meandering and finely disperse and mix the bubbles in the liquid are provided. . A large number of dispersion / mixing flow paths 32 communicate with each other at intervals in the axial direction and the circumferential direction of the gas-liquid supply path 31 so that the liquid mixed with bubbles flows out from the terminal portion of each dispersion / mixing flow path 32. Yes.

  That is, the gas-liquid supply path 31 is formed in the gas-liquid supply path forming case 33, and the gas-liquid supply path forming case 33 is formed in a regular octagonal cylindrical shape as shown in FIGS. The peripheral wall 34, the upper end surface portion 35 formed to be stretched on the upper end surface of the peripheral wall 34, and the lower end surface portion 36 formed to be stretched on the lower end surface of the peripheral wall 34. The lower end surface portion 36 is formed in a disk shape projecting outward from the peripheral wall 34. An introduction port 37 is formed at the rear portion of the lower end surface portion 36 so as to be positioned in the peripheral wall 34, and the lower surface of the lower end surface portion 36 located at the peripheral portion of the introduction port 37 has a larger diameter and a cylindrical introduction than the introduction port 37. A guide body 38 is provided vertically so that the inside of the introduction guide body 38 communicates with the introduction port 37 in the vertical direction. The introduction guide body 38 can be fitted into the discharge port portion 5 so that the gas-liquid supply path forming case 33 is connected to the impeller housing portion 2 in communication. At this time, the gas-liquid supply path 31 in the gas-liquid supply path forming case 33 communicates with the discharge port portion 5 of the impeller accommodating portion 2 via the introduction guide body 38 and the introduction port 37.

  As shown in FIGS. 5 and 6, a large number of mixing units 40 are attached to the gas-liquid supply path forming case 33. That is, the peripheral wall 34 of the gas-liquid supply path forming case 33 is formed in a regular octagonal cylindrical shape as described above, and a plurality of (four in the present embodiment) are provided on each of the eight planes of the peripheral wall 34 with an interval in the vertical direction. Are formed in a circular opening shape. A mixing unit 40 is attached to each of the eight planes of the peripheral wall 34 so as to close the respective channel communication holes 39.

  As shown in FIGS. 9 to 11, the mixing unit 40 includes a first element 41 and a second element 42 that are formed in a substantially identical disk shape so as to face each other. Dispersion / mixing flow path 32 is formed in this.

  The dispersion / mixing flow path 32 communicates between the flow path communication holes 39 between the central portions, which are the starting edge portions of both elements 41 and 42, via an inflow port 43 formed in the central portion of the first element 41. The outflow ports 44 that open radially between the outer peripheral edges, which are the end edges of the elements 41 and 42, are formed. A group of a plurality of concave portions 45 and 46 having the same depth and size are formed on the opposing surfaces of both elements 41 and 42 in an orderly manner without gaps from the inlet 43 side toward the outlet 44 side. The opposing recesses 45 and 46 are arranged at different positions so as to communicate with each other, and the liquid mixture containing air bubbles is meandering between the opposing recesses 45 and 46 while repeating the merging and splitting. It forms so that it may flow toward the outflow port 44 side from 43 side.

  On the lower end surface portion 36 of the gas-liquid supply path forming case 33, as shown in FIGS. 5 and 8, a mixed gas / liquid outlet path forming case 50 covering the peripheral wall 34 and the upper end surface portion 35 is placed and connected, A gas / liquid outlet path 51 is formed between the outer surface of the gas / liquid supply path forming case 33 and the inner surface of the gas / liquid outlet path forming case 50. The gas-liquid-liquid lead-out path forming case 50 includes a cylindrical peripheral wall forming piece 52, a ceiling forming piece 53 that is connected to the upper edge of the peripheral wall forming piece 52, and a circular shape that opens at the upper front of the peripheral wall forming piece 52. And a cylindrical lead-out guide body 55 projecting forward from the peripheral edge of the lead-out port 54. As shown in FIGS. 1 to 4, the lead-out guide body 55 protrudes forward from a circular opening 12 g opened at the top of the front end wall 12 a of the housing case 10. A bulging portion 56 that bulges inward along the peripheral edge is formed on the inner peripheral edge of the lower end of the peripheral wall forming piece 52, and a plurality of female screw holes 56 a having axial lines directed vertically in the bulging portion 56. They are formed at intervals in the circumferential direction. Reference numeral 36a denotes a number of screw holes formed in the outer peripheral portion of the lower end surface portion 36 so as to be aligned with the female screw hole 56a. The liquid lead-out path forming case 50 is connected.

  The gas-liquid mixing apparatus M according to the first embodiment is configured as described above. According to the gas-liquid mixing apparatus M, the following operational effects are produced. That is, by immersing the housing case 10 in the liquid to be mixed, the submersible pump P is immersed in the liquid, and gas is supplied from the gas supply source As to the diffused gas 21a, 21a through the gas supply pipe 22. Then, bubbles which are refined to a micro level are diffused into the liquid through the diffused gases 21a and 21a. Then, the submersible pump P is driven to suck the liquid (bubble initial liquid mixture) R mixed with bubbles from the suction port portion 4, and the gas-liquid supply path is formed from the discharge port portion 5 of the submersible pump P through the introduction port 37. Pump into the case 33. The initial bubble mixed liquid R pumped into the gas-liquid supply path forming case 33 flows into the dispersion / mixing flow path 32 of the flow passage communication hole 39 → the inlet 43 → the mixing unit 40, and joins and splits while meandering. It repeats to flow toward the outlet 44 side. At this time, bubbles micronized to the micro level are micronized to the nano level and mixed with the liquid uniformly. In addition, the gas is refined in advance before being sucked into the submersible pump P to form macro level fine bubbles, so that the submersible pump P is prevented from being caught by air and is discharged from the submersible pump P. Since the air bubbles can be further refined by the mixing unit 40, most of the air bubbles can be steadily reduced to the nano level.

  A large number of dispersion / mixing channels 32 that disperse and mix bubbles in the liquid are dispersed in the axial direction and in the circumferential direction of the gas-liquid supply channel 31 so as to communicate with each other. Since the liquid in which bubbles are mixed (the final bubble mixed liquid Rm shown in FIGS. 5 and 6) is allowed to flow out from the end portion of the liquid, the pressure loss in the mixing unit 40 can be reduced and the nano level final bubbles Increase (efficiency) of the outflow amount of the mixed liquid Rm can be achieved. In addition, the dispersion / mixing flow path 32 that can reduce pressure loss can be formed in a compact manner, and a large number of compactly formed dispersion / mixing flow paths 32 can be formed. It is possible to increase (efficiency) the outflow amount of the bubble mixed liquid Rm.

  The final bubble mixed liquid Rm flowing out from the outlet 44 of the mixing unit 40 is discharged from the mixed gas / liquid outlet path 51 → the outlet 54 → the outlet guide body 55 into the liquid to be mixed.

(Specific description of the configuration of the mixing unit 40)
Next, the configuration of the mixing unit 40 will be described more specifically. That is, as shown in FIGS. 6 and 9 to 11, the mixing unit 40 has a disk-shaped first element 41 in which an inlet 43 for the initial bubble mixed liquid R is formed in the center portion. Two elements 42 are arranged facing each other, and the initial bubble mixed liquid R flowing from the center side inlet 43 between the elements 41, 42 is caused to flow in the radial direction toward the peripheral side to disperse / A dispersion / mixing channel 32 for mixing is formed and configured. A screw hole 61 is provided in the center of the first element 41, that is, in the center of the inflow port 43 via a support piece 60, while a screw hole 62 is formed in the center of the second element 42 to be matched. By screwing a screw 63 into the screw hole 61 and the screw hole 62, the elements 41 and 42 are connected in a face-to-face state to form the mixing unit 40. First and second attachment holes 64, 64, 65, 65 that match each other are formed in the upper and lower portions of both elements 41, 42 so as to be parallel to the central axis, and the peripheral wall of the gas-liquid supply path forming case 33 34, third mounting holes 66, 66 that coincide with the first and second mounting holes 64, 64, 65, 65 are formed, and mounting bolts 67 are screwed into the first to third mounting holes 64-66. Thus, the mixing unit 40 is attached to the peripheral wall 34.

  As shown in FIGS. 9 to 11, the dispersion / mixing flow path 32 has a large number of the same shape and the same size each having a regular hexagonal shape (honeycomb shape) on the opposed surfaces of the first and second elements 41 and 42. The recesses 45 and 46 are formed in an orderly manner without any gaps. The opening surfaces of the recesses 45 and 46 of the elements 41 and 42 are arranged in contact with each other in abutting manner and at different positions so as to communicate with each other. The number of the concave portions 45 and 46 of the elements 41 and 42 arranged on the same circumference centering on the inlet 43 of the initial bubble mixed liquid R is gradually increased from the central side toward the peripheral side, The diversion number (dispersion number) is increased in the radial direction. An outlet 44 is formed on the peripheral edge side between the elements 41 and 42.

  As shown in FIG. 11, the contact surface of both elements 41 and 42 is in a state where a corner 48 where the three recesses 46 of the second element 42 are gathered is located at the center of the recess 45 of the first element 41. In contact.

  When the first element 41 and the second element 42 are brought into contact with each other in such a state, the initial bubble mixed liquid R can flow between the recess 45 of the first element 41 and the recess 46 of the second element 42. .

  Therefore, for example, considering the case where the initial bubble mixed liquid R flows from the concave portion 45 side of the first element 41 to the concave portion 46 side of the second element 42, the initial bubble mixed liquid R is divided (dispersed) into two flow paths. Will be.

  That is, the corner portion 48 of the second element 42 disposed at the center position of the concave portion 45 of the first element 41 functions as a diversion portion for diverting the initial bubble mixed liquid R. On the other hand, considering the case where the initial bubble mixed liquid R flows from the second element 42 side to the first element 41 side, the initial bubble mixed liquid R flowing from two directions flows into one concave portion 45 and merges. become. In this case, the corner portion 48 of the second element 42 functions as a merging portion.

  Further, the corner 47 where the three recesses 45 of the first element 41 are gathered is also located at the center position of the recess 46 of the second element 42. In this case, the corner portion 47 of the first element 41 functions as the diversion portion or the merge portion described above.

  As described above, the initial bubble mixed liquid R supplied in the axial direction of the elements 41 and 42 from the central inlet 43 is divided between the elements 41 and 42 facing each other in a facing state. A dispersion / mixing flow path 32 (see FIG. 6) is formed that flows in a meandering manner in the radiation direction (radial direction perpendicular to the axial direction) of both elements 41 and 42 while repeating the joining (dispersing and mixing). In the process in which the initial bubble mixed liquid R flows in the dispersion / mixing flow path 32, the initial bubble mixed liquid R is subjected to the dispersion / mixing process to generate the final bubble mixed liquid Rm.

  In the mixing unit 40 configured as described above, the number of the concave portions 45 and 46 of the first and second elements 41 and 42 gradually increases from the central portion side toward the peripheral portion side. The number of the concave portions 45 and 46 where the two are merged increases toward the peripheral portion side, and is distributed (distributed) in proportion to the number of the concave portions 45 and 46. Therefore, in the dispersion / mixing flow path 32, the number of times the initial bubble mixed liquid R is refined by the shearing force is along the flow direction of the initial bubble mixed liquid R (radial direction toward the peripheral side). Gradually increases. As a result, the initial bubble mixed liquid R containing the micro-level bubbles is discharged in large quantities as the final bubble mixed liquid Rm containing the nano-level bubbles firmly through the dispersion / mixing channel 32.

[Description of Gas-Liquid Mixing Device According to Second Embodiment]
M shown in FIGS. 12-14 is the gas-liquid mixing means 30 which concerns on 2nd Embodiment, and as shown in FIGS. 12-14, the gas-liquid mixing means 30 is the mixing case 110 formed in the square box shape. A plurality of mixing units 120 formed in a rectangular plate shape extending in one direction (left and right direction in the present embodiment) are arranged in layers. The mixing case 110 has a rectangular plate-shaped ceiling 115 and bottom 116 extending in the left-right direction, and a rectangular plate-shaped front, rear, left, right side wall interposed between the front and rear, left and right side edges of the ceiling 115 and the bottom 116. It is formed by the parts 117, 117, 118, 118. A circular introduction port 111 is provided at the center of the bottom 116, and the introduction port 111 is connected to the discharge port 5 of the submersible pump P, whereby the initial bubble mixed liquid is introduced into the gas-liquid mixing unit 30 from the introduction port 111. R is introduced in a pressurized state. A mixing unit 120 is disposed in the mixing case 110 so that the bubbles in the initial bubble mixed liquid R introduced from the inlet 111 are further refined by the mixing unit 120 to generate the final bubble mixed liquid Rm. Yes. The ceiling portion 115 of the mixing case 110 is provided with a circular outlet 112 having a smaller diameter than the inlet 111, and the final bubble mixed liquid Rm mixed by the mixing unit 120 is led out from the outlet 112. An introduction guide body 154 is connected in communication with the introduction port 111, and a lead-out guide body 155 is connected in communication with the outlet port 112. In the present embodiment, the inlet 111 and the outlet 112 are formed at the upper and lower central portions of the mixing case 110, and the pair of mixing units 120, 120 are arranged symmetrically on the left and right sides in the mixing case 110.

  A large number of mixing units 120 are arranged in an orderly manner in the mixing case 110 via mixing unit supports 170. The mixing unit support 170 is interposed between the upper and lower plates 171 and 172 formed in a square plate extending in one direction (in this embodiment, left and right direction), and the front and rear side edges of the upper and lower plates 171 and 172. From the front and rear side walls 173 and 174, the left and right sides are formed in a square cylinder shape. 175 is a left side opening, and 176 is a right side opening. Reference numeral 177 denotes a communication port portion formed at the center of the lower plate. The communication port portion 177 is formed in alignment with the introduction port 111, and the initial bubble mixed liquid is introduced into the mixing case 110 from the introduction port 111 through the communication port portion 177. R is allowed to flow in.

  In the mixing unit 120, the lower surface 131 of the first element 130 and the upper surface 141 of the second element 140 that are formed in a horizontally-rectangular rectangular plate shape are arranged to face each other. The starting edge portions (inner end edge portions in this embodiment) of both elements 130 and 140 serve as inflow ports 150 formed to have substantially the same width as the inner diameter of the introduction port 111, while the end edge portions (the main edges of both elements 130 and 140) In the embodiment, the outer edge) is an outlet 151 formed to have substantially the same width as the inlet 150. A plurality of (two in this embodiment) recess groups 132, 133, 142, and 143 having the same depth and size are provided on the upper and lower surfaces 131 and 141, which are opposing surfaces, from the inlet side to the outlet side. It is divided and formed at intervals.

  That is, the recess group 132 has a regular hexagonal and bottomed cylindrical recess 134 with an opening shape on the inlet 150 side of the lower surface 131 of the first element 130 (bottom view) across the width direction (the front-rear direction in this embodiment). In a state where there is no gap, a plurality of rows (four rows in this embodiment) are provided adjacent to each other in the extending direction (left and right in this embodiment), and the recesses 134 are opened downward. A large number of recesses 134 are formed in a so-called honeycomb shape. The recess group 133 has a regular hexagonal bottomed cylindrical recess 135 on the outlet 151 side of the lower surface 131 of the first element 130 (viewed from the bottom) and has no gap across the width direction (the front-rear direction in this embodiment). In this state, a plurality of rows (five rows in this embodiment) are adjacent to each other in the extending direction (left and right directions in this embodiment), and the recesses 135 are opened downward. A large number of recesses 135 are formed in a so-called honeycomb shape. The diameter of the opening surface of the recess 135 is formed to be a small diameter that is not more than one-half of the diameter of the opening surface of the recess 134. And the cylinder length of the recessed part 135 is formed in the short width of 1/2 or less of the cylinder length of the recessed part 134. FIG.

  Further, the recess group 142 extends a regular hexagonal bottomed cylindrical recess 144 on the inlet 150 side of the upper surface 141 of the second element 140 in a state where there is no gap in the width direction (the front-rear direction in this embodiment). A plurality of rows (four rows in the present embodiment) are adjacent to each other in the direction (left and right in the present embodiment), and the concave portion 144 is opened upward. Many concave portions 144 are formed in a so-called honeycomb shape. The concave portion group 143 has a regular hexagonal cylindrical concave portion 145 on the side of the outlet 151 of the upper surface 141 of the second element 140 in the extending direction (this embodiment) with no gap in the width direction (front-rear direction in this embodiment). A plurality of rows (5 rows in this embodiment) are provided adjacent to each other in the horizontal direction in the form, and the recesses 145 are opened upward. A number of recesses 145 are formed in a so-called honeycomb shape. The concave portion 144 is symmetrical with the concave portion 134 in the vertical line and has the same bottomed cylindrical shape, while the concave portion 145 is symmetrical with the concave portion 135 and has the same bottomed cylindrical shape.

  A plurality of layers (two layers in this embodiment) meandering channels are formed on the outlet 151 side between the first and second elements 130 and 140. That is, the dividing element 180 formed in a square plate shape is disposed between the recess groups 133 and 143. And the recessed part groups 181 and 182 are formed in the upper and lower surfaces of the division | segmentation element 180, respectively. The recess group 181 includes a recess 183 formed in the same bottomed cylindrical shape as the recess 135 on the upper surface of the split element 180 in the extending direction (in this embodiment, left and right in this embodiment) with no gap in the width direction (in this embodiment, the front-rear direction). A plurality of rows (5 rows in the present embodiment) are adjacent to each other in the (direction) and project upward and open upward. Further, a concave portion 184 formed in the bottomed cylindrical shape identical to the concave portion 145 is formed on the lower surface of the split element 180 in the extending direction (in the present embodiment, the left-right direction) with no gap in the width direction (the present embodiment, the front-rear direction). ) Projecting downward in a plurality of rows (5 rows in the present embodiment) and opening downward.

  The recesses 134 that form the recess group 132 and the recesses 144 that form the recess group 142 are arranged to face each other and at different positions so as to communicate with each other. That is, the corner portion 146 (136) of the concave portion 144 (134) is in contact with the central position of the concave portion 134 (144). Therefore, for example, when considering the case where the initial bubble mixed liquid R flows from the concave portion 134 side of the first element 130 to the concave portion 144 side of the second element 140, the initial bubble mixed liquid R is divided (dispersed) into two flow paths. Will be. That is, the corner portion 146 of the second element 140 positioned at the center position of the concave portion 134 of the first element 130 functions as a flow dividing portion for diverting the initial bubble mixed liquid R. Conversely, considering the case where the initial bubble mixed liquid R flows from the second element 140 side to the first element 130 side, the initial bubble mixed liquid R flowing from the two directions flows into one concave portion 134 and merges. become. In this case, the corner portion 136 of the first element 130 located at the center position of the concave portion 144 of the second element 140 functions as a merging portion.

  The recesses 135 forming the recess group 133 and the recesses 183 forming the recess group 181 and the recesses 184 forming the recess group 182 and the recesses 145 forming the recess group 143 are the above-described opposing recesses 134 and 144, respectively. Similarly, they are arranged to face each other so as to communicate with each other, and are arranged at different positions. In other words, in the present embodiment, the opening surfaces of the recess 135 and the recess 145 are arranged so as to be aligned with each other, and the recesses 183 and 184 are arranged at different positions from the recesses 135 and 145 arranged in alignment. Reference numerals 137, 147, 185, and 186 denote corners of the recesses 135, 145, 183, and 184, respectively. As described above, meandering channels are formed between the recess groups 133 and 181 and between the recess groups 182 and 143 on the outlet 151 side of the first and second elements 130 and 140, respectively, and two layers of serpentine flow are formed vertically. A path is formed. In addition, the meandering channel on the outlet 151 side of the first and second elements 130 and 140 is configured to form a single meandering channel between the recess groups 133 and 143 without providing the dividing element 180. You can also.

  Between each of the recess groups 132 and 142, the recess groups 133 and 181 and the recess groups 182 and 143, the lower surface 131 of the first element 130 and the upper surface 141 of the second element 140 are used in the width direction (in this embodiment, the left-right direction). A flat relay channel 160 extending in the direction is formed. The relay flow path 160 has a width corresponding to about three rows of the concave portions 134 and 144.

  With such a configuration, the initial bubble mixed liquid R flows while meandering from the inlet 150 side to the outlet 151 side while repeating joining and splitting between the opposing recesses 134 and 144 of the recess groups 132 and 142. Thus, the final bubble mixed liquid Rm is obtained. And the flat relay flow path formed between the lower surface 131 of the 1st element 130 and the upper surface 141 of the 2nd element 140 between each recessed part group 132,142, recessed part group 133,181, and recessed part group 182,143. In 160, the final bubble mixed liquid Rm is rectified. Then, the rectified end-stage bubble mixed liquid Rm is smoothly branched and introduced between the concave portions 135 and 183 and the concave portions 184 and 145 facing each other in the concave portion groups 133 and 181 and the concave portion groups 182 and 143. The fluid flows while meandering from the inlet 150 side toward the outlet 151 side. At this time, since the diameters of the opening surfaces of the recesses 135, 183, 184, 145 are formed to be smaller than one half of the diameter of the opening surface of the recesses 134, 144, the space between the recesses 135, 183 and between the recesses 184, 145 The bubbles in the final bubble mixture liquid Rm are further refined by the shearing force received between them. As a result, the bubbles in the final bubble mixed liquid Rm are steadily refined to the nano level.

  In the mixing unit support 170, a number of mixing units 120 (10 in this embodiment) are arranged in multiple layers so as to be symmetrical with respect to the left and right sides of the communication port portion 177 communicating with the introduction port 111. Arranged in a stacked manner, an introduction path 113 is formed in the space between the multi-layer mixing units 120 on the left and right sides and extends straight from the communication port 177 to the lower surface of the upper plate 171 of the mixing unit support 170. I am doing so. In addition, each inlet 150 of the plurality of mixing units 120 is communicated with the introduction path 113. Further, in the mixing case 110, a lead-out path 114 is formed along the inner surfaces of the left and right wall portions 118, 118 facing the left and right outlets 151, 151 and the inner surface of the ceiling portion 115. The outlets 151 of the plurality of mixing units 120 are communicated with the starting end side of the outlet path 114 via the left and right side openings 175 and 176, while the outlet port 112 is communicated with the terminal side of the outlet path 114. Yes.

  A plurality of (many) mixing units 120 are arranged in a superposed manner, and each inlet 150 is arranged along a virtual collinear line extending in the vertical direction, and the introduction path 113 is orthogonal to each inlet 150. By connecting, the introduction path 113 is formed in a straight shape in the vertical direction. Further, each outlet 151 is arranged along a virtual collinear line extending in the vertical direction, and the starting end of the outlet path 114 is communicated with each outlet 151 in a state orthogonal to each outlet 151, that is, the starting end of the outlet path 114, that is, The portions communicating with the left and right side openings 175 and 176 are formed in a straight shape in the vertical direction.

  A plurality of (two in the left and right in this embodiment) mixing units 120 extending in a radial direction (horizontal in the present embodiment) orthogonal to the axis of the introduction path 113 are arranged on the same plane and on the axis of the introduction path 113. A plurality of stages (in this embodiment, 10 stages on the left and right) are formed.

  The mixing unit 120 can be configured by forming each part (constituent member) from a synthetic resin such as an acrylic resin and integrally bonding them with an adhesive, or by using an alloy such as stainless steel. It is also possible to form an integral part by forming each part and integrally assembling these parts with screws.

  In the gas-liquid mixing means 30 as the second embodiment configured as described above, for example, the initial bubble mixed liquid R is introduced into the mixing case 110 through the inlet 111 by the submersible pump P, and the mixing disposed in the mixing case 110 is performed. A plurality of different initial bubble mixed liquids R introduced by the unit 120 can be mixed, and the mixed final bubble mixed liquid Rm can be led out of the mixing case 110 from the outlet 112.

  In the mixing unit 120, a plurality of different initial bubble mixed liquids R are caused to flow from the inlet 150 between the starting edge portions of the plate-like first element 130 and the second element 140 whose surfaces are opposed to each other. Until the initial bubble mixed liquid R flows between the opposing recesses 134, 144 of the respective recess groups 132, 133, 142, 143, until it flows out from the outlet 151 between the terminal edges of both elements 130, 140, By causing the fluid to meander between the recesses 135 and 183 and between the recesses 184 and 145 while repeating the joining and splitting, the final bubble mixed liquid Rm can be generated steadily. As a result, the production efficiency of the final bubble mixed liquid Rm can be improved.

  At this time, a plurality of (two sets in the present embodiment) recess groups 132, 133, 142, 143 formed between the recesses 134, 144, the recesses 135, 183, and the opening surfaces of the recesses 184, 145 are formed at intervals. As compared with the recesses 134 and 144 on the inlet side, the recesses 135 and 183 and the recesses 184 and 145 on the outlet side are formed to have a smaller diameter. For this reason, the bubbles contained are refined to the nano level by the shearing force received when the initial bubble mixed liquid R flows while meandering between the recesses on the inlet side (upstream side), and the final bubble mixed liquid Rm is generated. Is done. Then, the interval from the outlet side (downstream side) to the recess groups 133 and 143 is defined as the relay channel 160, and the flow of the generated mixed fluid is rectified while flowing through the relay channel 160. Subsequently, the rectified mixed fluid flows while meandering between the recesses 135 and 183 and the recesses 184 and 145 on the outlet side (downstream side) in which the diameter of the opening surface of the recess is small. The bubbles contained in the initial bubble mixed liquid R are further refined by the shearing force received at this time.

  As described above, the gas-liquid mixing means 30 is formed by dividing into the recess groups 132 and 142 and the recess groups 133 and 143 through the relay flow path 160 in which the flow of the initial bubble mixed liquid R is rectified. , Pressure loss can be reduced. Therefore, it is possible to reduce the power consumption of the submersible pump P that pumps and supplies the initial bubble mixed liquid R to the gas-liquid mixing means 30, and the outflow amount (derived amount) of the processed final bubble mixed liquid Rm. Increase (efficiency) can be achieved. In the continuous flow path from the inlet 111 to the outlet 112, the bubbles receive different shearing forces stepwise between the recesses 135, 183 and the recesses 184, 145 having different opening diameters. Since it is miniaturized a plurality of times, it is possible to perform the miniaturization generation to the nano level steadily and efficiently.

  Further, the inlets 150 of the plurality of mixing units 120 are communicated with the introduction passages 113 communicating with the introduction ports 111, and the outlets 151 of the plurality of mixing units 120 are communicated with the outlet passages 114 communicating with the outlet ports 112. Therefore, a plurality of fluid mixing processes are efficiently performed simultaneously by the plurality of mixing units 120. At this time, the number of the mixing units 120 can be appropriately communicated with the derivation / entry paths 114 and 113 by a desired number by appropriately setting the extension and extension of the introduction path 113 and the derivation path 114. Therefore, by increasing / decreasing the number of the mixing units 120, the outflow amount (derived amount) of the mixed fluid can be set as appropriate.

  Since the plurality of mixing units 120 are arranged in a multi-layered manner, and the starting ends of the introduction path 113 and the outlet path 114 are formed in a straight shape, a required number of the mixing units 120 are provided in the mixing case 110. It can arrange | position compactly, The fluid mixing process by each mixing unit 120 can be performed efficiently simultaneously in parallel. Therefore, an appropriate amount of the treated final bubble mixed liquid Rm can be generated by the appropriate number of mixing units 120 arranged in the mixing case 110 in a compact manner and can be led out from the mixing case 110.

  A large number of mixing units 120 can be arranged in the mixing case 110 in a compact manner, and mixed fluids can be simultaneously generated by the mixing units 120. Therefore, a large amount of the final bubble mixed liquid Rm can be efficiently generated.

  Further, since the recesses 133 and 143 on the outlet 151 side (downstream side) are formed in two layers, the recesses 135 and 183 and the recesses 184 and 145 on the outlet 151 side (downstream side) formed in two layers. A large amount of bubbles contained in the initial bubble mixed liquid R is refined by a shearing force received when flowing while meandering between each other. For this reason, the generation of fine particles to the nano level is efficiently performed.

[Description of Gas-Liquid Mixing Unit According to Modification of Second Embodiment]
A gas-liquid mixing unit 30 as a modification of the second embodiment will be described with reference to FIGS. As shown in FIGS. 16 to 18, the gas-liquid mixing means 30 is configured by arranging a plurality of mixing units 220 formed in a disk shape in a mixing case 210 formed in a cylindrical box shape. The mixing case 210 is formed such that a cylindrical peripheral wall portion 217 is interposed between a ceiling portion 215 and a bottom portion 216 formed in a disk shape. A circular inlet 211 is provided at the center of the bottom 216, and the inlet 211 is connected to the outlet 5 of the submersible pump P so that the initial bubble mixed liquid is introduced into the gas-liquid mixing means 30 from the inlet 211. R is introduced in a pressurized state. The initial bubble mixed liquid R introduced from the inlet 211 is refined by the mixing unit 220 disposed in the mixing case 210 to generate the final bubble mixed liquid Rm. . A circular outlet 212 having a smaller diameter than the inlet 211 is provided at the center of the ceiling 215, and the final bubble mixed liquid Rm mixed by the mixing unit 220 is led out from the outlet 212. In addition, the introduction guide body 254 is connected to the introduction port 211 in communication, and the lead-out guide body 255 is connected to communication in the lead-out port 212. In this embodiment, the inlet 211 and the outlet 212 are formed in the upper and lower central portions of the mixing case 210, and the mixing unit 220 is disposed in the central portion of the mixing case 210.

  A number of mixing units 220 are arranged in an orderly manner in the mixing case 210 via a mixing unit support 270. The mixing unit support 270 is formed in a circular plate shape by a pair of upper and lower support plates 271 and 272, and the support plates 271 and 272 are opened in the circumferential direction. 273 is a peripheral opening, 274 is a communication port formed at the center of the lower support plate 272, and the communication port 274 is formed in alignment with the introduction port 211. The initial bubble mixed liquid R flows into the mixing case 210 through 274.

  In the mixing unit 220, the surfaces of the first element 230 and the second element 240 formed in a ring plate shape are arranged so as to face each other, and the inner peripheral edge of both the elements 230 and 240 serves as the inflow port 250. An outlet 251 is formed between the outer peripheral edges of the elements 230 and 240. A plurality of (two in this embodiment) recess groups 232, 233, 242, and 243 having the same depth and size are formed in a ring band shape with the inflow port 250 as the center on each facing surface of both elements 230 and 240. It is divided and formed from the inflow port 250 side toward the outflow port 251 side.

  That is, the recess group 232 has a regular hexagonal opening shape on the inlet 250 side, which is the center side of the lower surface 231 of the first element 230 (viewed from the bottom), and a bottomed cylindrical recess 234 with no gap in the circumferential direction. A plurality of rows (three rows in the present embodiment) are arranged adjacent to each other in the radial direction, and the recesses 234 are opened downward. A large number of recesses 234 are formed in a so-called honeycomb shape. The recess group 233 connects the upper surface of the third element 237 formed in the shape of a ring plate to the outlet 251 side, which is the peripheral side of the lower surface 231 of the first element 230, in an overlapped state, and has an opening shape on the lower surface of the third element 237 (Bottom view) is a regular hexagonal bottomed cylindrical concave portion 235 that is vertically arranged adjacent to a plurality of rows (four rows in this embodiment) in the radial direction with no gap in the circumferential direction, and the concave portion 235 is directed downward. Open. A large number of recesses 235 are formed in a so-called honeycomb shape. The diameter of the opening surface of the recess 235 is formed to be a small diameter that is not more than one-half of the diameter of the opening surface of the recess 234. The sum of the cylinder length of the recess 235 and the thickness of the third element 237 is formed to be the same as the cylinder length of the recess 234.

  The concave group 242 includes a plurality of rows of radially concave hexagonal bottomed cylindrical recesses 244 on the inlet 250 side, which is the center side of the upper surface 241 of the second element 240, with no gap in the circumferential direction. (In this embodiment, three rows) are provided adjacent to each other, and the concave portion 244 is opened upward. A large number of recesses 244 are formed in a so-called honeycomb shape. The recess group 243 connects the lower surface of the fourth element 238 formed in a ring plate shape to the outlet 251 side, which is the peripheral side of the upper surface 241 of the second element 240, in an overlapped state, and has an opening shape on the upper surface of the fourth element 238. (Bottom view) is a regular hexagonal bottomed cylindrical concave portion 245 that protrudes adjacent to a plurality of rows (four rows in this embodiment) in the radial direction with no gap in the circumferential direction, and the concave portion 245 faces upward. Open. A large number of recesses 245 are formed in a so-called honeycomb shape. The diameter of the opening surface of the recess 245 is formed to be a small diameter that is not more than one-half of the diameter of the opening surface of the recess 244. The sum of the cylinder length of the recess 235 and the thickness of the fourth element 238 is formed to be the same as the cylinder length of the recess 244.

  The opposing recesses 234 and 244 are arranged at different positions so as to communicate with each other. That is, the corner 246 (236) of the recess 244 (234) is in contact with the center position of the recess 234 (244). Therefore, for example, when considering the case where the initial bubble mixed liquid R flows from the concave portion 234 side of the first element 230 to the concave portion 244 side of the second element 240, the initial bubble mixed liquid R is divided (dispersed) into two flow paths. Will be. That is, the corner portion 246 of the second element 240 positioned at the center position of the concave portion 234 of the first element 230 functions as a flow dividing portion for diverting the initial bubble mixed liquid R. On the other hand, considering the case where the initial bubble mixed liquid R flows from the second element 240 side to the first element 230 side, the initial bubble mixed liquid R flowing from two directions flows into one recess 234 and merges. become. In this case, the corner 236 of the first element 230 positioned at the center position of the recess 244 of the second element 240 functions as a merging portion.

  Further, the opposing concave portions 235 and 245 are arranged at different positions so as to communicate with each other in the same manner as the opposing concave portions 234 and 244, respectively. As described above, a single meandering channel is formed between the recess groups 233 and 243 on the outlet 251 side of the first and second elements 230 and 240. The third (fourth) element 230 (240) can be integrally formed with the first (second) element 230 (240). Further, the concave group 232 (242) can be integrally formed with the first (second) element 230 (240). On the outlet 251 side of the first and second elements 230 and 240, similarly to the first embodiment, a split element in which a concave group is formed on the upper and lower surfaces is arranged, and a two-layered meandering channel is formed on the upper and lower sides. It can also be made.

  With this configuration, the initial bubble mixed liquid R repeatedly joins and splits between the recesses 234, 244 and the recesses 234, 244 and the recesses 235, 245 of the recess groups 232, 242 and the recess groups 233, 243. The fluid flows while meandering from the side toward the outlet 251. Further, a flat relay flow path 260 having a ring band shape is formed between the concave portions 232 and 242 and the concave portions 233 and 243 by the lower surface 231 of the first element 230 and the upper surface 241 of the second element 240. . The relay flow path 260 has a width corresponding to about three rows of the recesses 234 and 244.

  Between the support plates 271 and 272 of the mixing unit support 270, a large number (10 in this embodiment) of the mixing units 220 are arranged in a multi-tiered manner around the communication port portion 274 communicating with the introduction port 211. In addition, an introduction path 213 that extends straight from the communication port 274 to the lower surface of the upper support plate 271 is formed at the center of the multilayer mixing unit 220. Then, the inlets 213 communicate with the inflow ports 250 of the plurality of mixing units 220. Further, in the mixing case 210, a lead-out path 214 is formed along the inner peripheral surface of the peripheral wall portion 217 facing the outlet 251 and the inner surface of the ceiling portion 215. The outlets 251 of the plurality of mixing units 220 communicate with the starting end side of the outlet path 214 via the peripheral end opening 273, while the outlet port 212 communicates with the terminal side of the outlet path 214.

  A disk-shaped mixing unit 220 extending in a radial direction (horizontal direction in the present embodiment) orthogonal to the axis of the introduction path 213 is arranged in a plurality of stages along the axis of the introduction path 213 (10 stages in the left and right in this embodiment). Step).

  The mixing unit 220 may be configured integrally by forming each part (constituent member) with a synthetic resin such as an acrylic resin and integrally bonding them with an adhesive, or an alloy such as stainless steel. Each part can be formed by the above, and these can be integrally assembled by screwing together.

  In the gas-liquid mixing means 30 configured as described above, the gas flows from the inflow port 250 between the inner peripheral edge portions of the first element 230 and the second element 240 which are formed in a ring plate shape and arranged so that the surfaces face each other. The initial bubble mixed liquid R flows between the elements 230 and 240 while meandering radially in the radial direction, and flows out from the outlet 251 between the outer peripheral edges. At this time, a plurality of recess groups 232, 233, 242, and 243 are formed in a ring shape with the inlet 250 as the center between the elements 230 and 240 with an interval from the inlet 250 to the outlet 251. Therefore, a large number of recesses 234, 235, 244, 245 can be arranged in each recess group 232, 233, 242, 243. The bubbles in the bubble mixed liquid R are steadily refined to the nano level. In addition, by arranging the mixing units 220 in multiple layers, it is possible to generate a large amount of the final bubble mixed liquid Rm that is refined to the nano level.

  In the mixing unit 220, the number of the recesses 235 and 245 in the recess groups 233 and 243 of the first and second elements 230 and 240 is gradually increased from the central side toward the peripheral side, so that the initial bubble The number of the concave portions 235 and 245 where the mixed liquid R joins increases toward the peripheral edge side, and is distributed (distributed) in proportion to the number of the concave portions. For this reason, in the meandering flow path, the number of times the shearing force acts on the initial bubble mixed liquid R to be refined gradually increases the flow direction of the initial bubble mixed liquid R (radial direction toward the peripheral edge side).

M gas-liquid mixing apparatus 10 housing case 11 bottom case forming body 12 covering case forming body 20 fine bubble generating means 30 gas-liquid mixing means 31 gas-liquid supply path 32 dispersion / mixing flow path 40 mixing unit 50 mixed gas-liquid lead-out path forming case

Claims (3)

In the vicinity of the suction port portion of the submersible pump immersed in the liquid, the fine gas bubble generating means for turning the supplied gas into fine bubbles and diffusing in the liquid is disposed,
A gas-liquid mixing means that further refines the fine bubbles and uniformly mixes with the liquid is connected to the discharge port of the submersible pump.
The gas-liquid mixing means includes a gas-liquid supply path that communicates with the discharge port of the submersible pump, a gas-liquid supply path that allows the bubbles and liquid to flow while meandering, and the bubbles are finely dispersed in the liquid. A dispersion / mixing channel for mixing,
A large number of dispersion / mixing channels are communicated at intervals in the axial direction and circumferential direction of the gas-liquid supply channel, and the liquid mixed with bubbles is allowed to flow out from the terminal portion of each dispersion / mixing channel. Gas-liquid mixing device. The dispersion / mixing flow path is formed between the opposing faces of the plate-like first element and the second element arranged in an opposing manner,
The dispersion / mixing flow path has an inlet between the start edges of both elements, and an outlet between the end edges of both elements, and the opposing surfaces of both elements have the same depth and size. A plurality of concave portions are formed from the inlet side toward the outlet side, and the opposite concave portions are arranged in different positions so as to communicate with each other, and there are bubbles between the concave portions facing each other. 2. The gas-liquid mixing device according to claim 1, wherein the liquid is formed so as to flow from the inlet side toward the outlet side while repeating joining and splitting while meandering. In the storage case, the submersible pump, the fine bubble generating means and the gas-liquid mixing means are stored,
The storage case is provided with a liquid inflow hole through which liquid flows, a cable insertion part for inserting a power transmission cable, and a pipe connection part for connecting a gas supply pipe,
Connect the power transmission cable from the outside of the storage case to the submersible pump in the storage case through the cable insertion part,
The gas-liquid mixing apparatus according to claim 1 or 2, wherein a gas supply pipe is connected from the outside of the housing case to the fine bubble generating means in the housing case through the pipe connecting portion.

Images