JP2010162457A - Fine air bubble generating nozzle and fine air bubble generating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fine air bubble generating nozzle that efficiently generates fine air bubbles. <P>SOLUTION: The fine air bubble generating nozzle includes a gas-liquid mixing section 12 that mixes a liquid and a gas, a stirring member 14 disposed inside the gas-liquid mixing section 12, and a delivering section 16 that delivers a gas-liquid mixing fluid from the gas-liquid mixing section 12, and further includes a driving mechanism 18 that drives the stirring member 14 by the fluid energy of the gas-liquid mixing fluid delivered from the delivering section 16. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fine bubble generating nozzle and a fine bubble generating apparatus suitable for generating fine bubbles.

  The fine bubbles are generated, for example, by mixing and pressurizing liquid and gas, dissolving the gas in the liquid, and then rapidly depressurizing the gas-liquid mixed fluid. An apparatus for generating such fine bubbles is disclosed in, for example, Japanese Patent Application Laid-Open No. 2003-117365 (Patent Document 1). The apparatus proposed in the publication includes a resistor that gives resistance to a gas-liquid mixing pump that sucks a mixed fluid of liquid and gas, and an inverter that controls the rotation speed of the gas-liquid mixing pump. An annular fluid passage narrow in the radial direction is formed on the inner periphery of the casing of the gas-liquid mixing pump, and a large number of stirring blades projecting into the fluid passage are provided on the outer periphery of the impeller. In the publication, a structure in which a half-moon shaped orifice is formed in the lower part of the barrier plate as a resistor is proposed.

JP 2003-117365 A

  By the way, it is desirable that the fine bubble generating device dissolves more gas in the liquid before suddenly depressurizing the gas-liquid mixed fluid. The present invention proposes a fine bubble generating nozzle and a fine bubble generating device that can efficiently generate fine bubbles.

  The fine bubble generating nozzle according to the present invention generates fine bubbles by discharging a gas-liquid mixed fluid in which a liquid and a gas are mixed. The fine bubble generating nozzle includes a gas-liquid mixing unit in which liquid and gas are mixed, a stirring member disposed in the gas-liquid mixing unit, a discharge unit from which the gas-liquid mixed fluid is discharged from the gas-liquid mixing unit, And a drive mechanism that operates the stirring member by the fluid energy of the gas-liquid mixed fluid discharged from the discharge unit.

  According to the fine bubble generating nozzle, the agitating member disposed in the gas-liquid mixing unit is operated by the fluid energy of the gas-liquid mixed fluid discharged from the discharge unit by the driving mechanism. And by this operation | movement of the stirring member, gas becomes easy to melt | dissolve in a liquid within a gas-liquid mixing part. Thereby, before the gas-liquid mixed fluid is rapidly decompressed, more gas is dissolved in the liquid, and fine bubbles can be generated efficiently.

  The drive mechanism may be a mechanism that includes, for example, a water wheel in the discharge part and operates the stirring member by power obtained by the water wheel. In this case, it is preferable to provide a guide unit that guides the gas-liquid mixed fluid discharged from the discharge unit toward the water turbine. The discharge unit may include a valve that is opened when the inside of the gas-liquid mixing unit is higher than a predetermined pressure than the outside of the fine bubble generating nozzle.

  In addition, the fine bubble generating nozzle includes a water supply port for sending liquid to the gas-liquid mixing unit, a gas supply port for supplying gas to the gas-liquid mixing unit, a float installed in the gas-liquid mixing unit, and the operation of the float A liquid level adjusting valve for opening and closing the gas supply port may be provided. In this case, the water supply port is preferably arranged at the upper part of the gas-liquid mixing unit.

  The fine bubble generating device may include the fine bubble generating nozzle. In this case, the fine bubble generating device may include a water supply pump that supplies a gas-liquid mixed fluid in which a liquid and a gas are mixed to the gas-liquid mixing unit.

  According to the fine bubble generating nozzle and the fine bubble generating device according to the present invention, before the gas-liquid mixed fluid is rapidly depressurized, more gas is dissolved in the liquid, and fine bubbles can be generated efficiently.

Sectional drawing which shows the structure of the fine bubble generation nozzle which concerns on one Embodiment of this invention. Sectional drawing which shows the structure of the discharge part of the fine bubble generation nozzle which concerns on one Embodiment of this invention. Sectional drawing which shows the structure of the discharge part of the fine bubble generation nozzle which concerns on other embodiment of this invention. The figure which shows the structural example of the microbubble generator which concerns on one Embodiment of this invention. The figure which shows the structural example of the microbubble generator which concerns on one Embodiment of this invention.

  Hereinafter, a fine bubble generating nozzle and a fine bubble generating device according to an embodiment of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the member and site | part which show | plays the same effect | action also in different embodiment.

  In this embodiment, as shown in FIG. 1, the fine bubble generating nozzle 10 includes a gas-liquid mixing unit 12, a stirring member 14, a discharge unit 16, and a drive mechanism 18. The fine bubble generating nozzle 10 generates a fine bubble by discharging a gas-liquid mixed fluid in which a liquid and a gas are mixed. Here, the fine bubble generating nozzle 10 will be described by taking as an example a case where a gas-liquid mixed fluid in which compressed air is mixed with water is discharged to generate fine bubbles.

≪Gas-liquid mixing part 12≫
The gas-liquid mixing unit 12 is a part where liquid and gas are mixed. In this embodiment, the gas-liquid mixing part 12 is comprised by the pipe line form. Further, a water supply pipe 42 a and a compressed air supply pipe 44 a are connected to one end of the tubular member 30 constituting the gas-liquid mixing unit 12. The other end of the tubular member 30 is configured with a discharge portion 16. The gas-liquid mixing part 12 is provided between the part where the water supply pipe 42a and the compressed air supply pipe 44a are connected and the part where the discharge part 16 is provided.

  A stirring member 14 is disposed in the gas-liquid mixing unit 12. The liquid is supplied from the water supply pump 42 to the gas-liquid mixing unit 12 through the water supply pipe 42a. The compressed air is supplied from the compressor 44 to the gas-liquid mixing unit 12 through the compressed air supply pipe 44a. In the gas-liquid mixing unit 12, the liquid A supplied from the water supply pipe 42a and the compressed air B supplied from the compressed air supply pipe 44a are mixed. The gas-liquid mixed fluid C mixed by the gas-liquid mixing unit 12 is discharged from the discharge unit 16.

  In this embodiment, the tubular member 30 constituting the gas-liquid mixing unit 12 has a smaller inner diameter at the site where the discharge unit 16 is provided than at the site where the gas-liquid mixing unit 12 is provided. Further, at the portion, the discharge port 16 a is formed on the side surface of the tubular member 30. A wall 32 having an opening 34 is provided at the end of the tubular member 30. Further, a guide portion 36 that guides the gas-liquid mixed fluid D discharged from the discharge port 16 a is provided outside the tubular member 30 at a portion where the discharge portion 16 is provided.

≪Guide part 36≫
In this embodiment, the guide part 36 is comprised by the outer wall which covers the outer side from the position in which the discharge outlet 16a was provided to the said edge part of the tubular member 30 so that it may oppose to radial direction. The guide portion 36 opens to the outside in the axial direction of the tubular member 30. The gas-liquid mixed fluid discharged from the discharge port 16a is guided by the guide portion 36, flows along the outer peripheral surface of the tubular member 30, and is discharged to the outside. A drive mechanism 18 that operates the stirring member 14 is disposed inside the guide portion 36.

≪Stirring member 14≫
The stirring member 14 disposed in the gas-liquid mixing unit 12 is a member that stirs the gas-liquid mixed fluid in the gas-liquid mixing unit 12. In this embodiment, the stirring member 14 includes a rotating shaft 14a and a stirring member 14b, and is rotatably mounted on bearings 22 and 24 provided on the tubular member 30. The rotating shaft 14a of the stirring member 14 is a shaft having a circular cross section. The stirring member 14b is a cylindrical member mounted on the outer side of the rotating shaft 14a. A plurality of protrusions 14 c extending toward the inner peripheral surface 12 a of the gas-liquid mixing unit 12 are provided on the outer peripheral surface of the stirring member 14 b. The bearing 22 is provided in a support portion 22 a extending inward of the tubular member 30 in an intermediate portion of the gas-liquid mixing portion 12. On the other hand, the bearing 24 is provided on the wall 32 of the tubular member 30 on the side where the discharge part 16 is provided. The bearings 22 and 24 are each arranged at the transverse center of the tubular member 30.

  In this embodiment, the rotating shaft 14 a is supported by the bearings 22 and 24 and is rotatably supported along the center of the gas-liquid mixing unit 12. The agitating member 14b is fixed in a state where it is attached to the outside of the rotating shaft 14a. Both ends of the rotating shaft 14a are fastened by stoppers 26 and 28. The stopper 28 is disposed outside the wall 32 of the tubular member 30 and is constituted by a boss portion 60a of a water wheel 60 constituting the drive mechanism 18 as will be described later. When the stirring member 14 rotates, the gas-liquid mixed fluid in the gas-liquid mixing unit 12 is stirred by the protrusions 14c provided on the stirring member 14b.

<< Discharge unit 16 >>
Next, the discharge part 16 is a part from which the gas-liquid mixed fluid is discharged from the gas-liquid mixing part 12. In this embodiment, the discharge part 16 is provided in the edge part of the tubular member 30 which comprises the gas-liquid mixing part 12. As shown in FIG. In this embodiment, the gas-liquid mixed fluid is discharged from the discharge port 16 a formed on the side surface of the end portion of the tubular member 30. In this embodiment, the discharge unit 16 is provided with a valve 50.

≪Valve 50≫
The valve 50 is opened when the inside of the gas-liquid mixing unit 12 is higher than a predetermined pressure than the outside of the fine bubble generating nozzle 10. In this embodiment, the valve 50 is comprised by the valve body 50a, the sealing material 50b, and the spring 50c, as shown in FIG.1 and FIG.2. The valve body 50a is attached to the rotating shaft 14a of the stirring member 14 so as to be movable in the axial direction. The outer peripheral surface of the valve body 50 a is in contact with the inner peripheral surface of the tubular member 30. The sealing material 50b is attached to the valve body 50a, and seals the gap between the valve body 50a and the rotating shaft 14a. In this embodiment, the spring 50c is formed of a coil spring and is attached to the rotating shaft 14a. The spring 50 c is mounted in a compressed state between the valve body 50 a and the wall 32 provided at the end of the tubular member 30. The tubular member 30 is provided with a valve seat 50d that restricts movement of the valve body 50a at a predetermined position when the valve body 50a is pushed up to the gas-liquid mixing unit 12 side by the spring 50c.

  In this embodiment, the valve seat 50 d is configured by a step provided on the inner peripheral surface of the tubular member 30. When the valve body 50a is seated on the valve seat 50d, the discharge port 16a formed on the side surface of the tubular member 30 is sealed. Further, an opening 34 is formed in the wall 32 of the tubular member 30, and fluid outside the fine bubble generating nozzle 10 flows in. Therefore, one side surface of the valve body 50 a receives pressure from the gas-liquid mixing unit 12, and the opposite side surface receives pressure from the outside of the fine bubble generating nozzle 10. Moreover, this valve body 50a is always pressed toward the gas-liquid mixing part 12 side by the spring 50c. The valve 50 is opened when the valve body 50a is moved to the opposite side of the gas-liquid mixing unit 12 by the pressure received from the gas-liquid mixing unit 12 side. That is, the valve 50 is opened when the valve body 50a is moved by the force received by the valve body 50a from the gas-liquid mixed fluid inside the gas-liquid mixing unit 12. That is, the valve body 50a is caused by the force received by the valve body 50a from the gas-liquid mixed fluid inside the gas-liquid mixing unit 12 against the force received from the fluid outside the fine bubble generating nozzle 10 and the elastic reaction force of the spring 50c. When moved, valve 50 is opened.

≪Drive mechanism 18≫
Next, the drive mechanism 18 will be described. The drive mechanism 18 operates the stirring member 14 with the fluid energy of the gas-liquid mixed fluid D discharged from the discharge unit 16. Here, the fluid energy includes, for example, fluid kinetic energy and potential energy. In this embodiment, as shown in FIG. 2, the drive mechanism 18 includes a water wheel 60 in the discharge unit 16, and operates the stirring member 14 with the power obtained by the water wheel 60. Specifically, in this embodiment, the water wheel 60 is a circular water wheel attached to the end of the rotating shaft 14 a of the stirring member 14. The water wheel 60 includes a boss portion 60a attached to the rotary shaft 14a and a rim portion 60b extending from the boss portion 60a in the outer direction. The rim portion 60b is provided with an opening 60d that takes in liquid outside the fine bubble generating nozzle 10 toward the valve body 50a. A plurality of wing portions 60c are provided on the outer peripheral portion of the rim portion 60b. The wing portion 60 c extends between the outer peripheral surface of the portion where the discharge portion 16 of the tubular member 30 is provided and the inner peripheral surface of the guide portion 36.

  In this embodiment, the gas-liquid mixed fluid D discharged from the discharge port 16 a hits the wing 60 c of the water wheel 60. In this case, since the pressure inside the gas-liquid mixing unit 12 is higher than the outside of the fine bubble generating nozzle 10, the gas-liquid mixed fluid D is ejected vigorously from the ejection port 16a. The plurality of wing portions 60c provided in the water wheel 60 are uniformly inclined in the circumferential direction and the axial direction. The water wheel 60 is rotated in a predetermined direction according to the inclination of the wing 60c by the fluid energy of the gas-liquid mixed fluid D that has hit the wing 60c. In this embodiment, the rim portion 60 b of the water wheel 60 has an outer cylinder portion 60 e that extends along the outer peripheral surface of the tubular member 30. For this reason, in this embodiment, the gas-liquid mixed fluid D discharged from the discharge port 16a mainly hits the region between the inner peripheral surface of the guide portion 36 and the outer peripheral surface of the rim portion 60b against the plurality of wing portions 60c. Pass while.

≪Fine bubble generation nozzle 10≫
According to the fine bubble generating nozzle 10, the stirring member 14 is operated by the fluid energy of the gas-liquid mixed fluid D discharged from the discharge unit 16 by the action of the driving mechanism 18. That is, in this embodiment, the water wheel 60 is rotated by the fluid energy of the gas-liquid mixed fluid D discharged from the discharge unit 16. The water wheel 60 is directly connected to the rotating shaft 14 a of the stirring member 14, and the stirring member 14 rotates as the water wheel 60 rotates. Thereby, the gas-liquid mixed fluid C in the gas-liquid mixing unit 12 is agitated, and the compressed air is better dissolved in the gas-liquid mixing unit 12. For example, when a large bubble exists in the gas-liquid mixing unit 12, the gas-liquid mixed fluid C is stirred by the agitating member 14, so that the bubble becomes fine and the contact area between the liquid and the gas increases. . Thereby, compressed air becomes easy to melt in the gas-liquid mixing part 12. For this reason, more air is dissolved in the gas-liquid mixed fluid C in the gas-liquid mixing unit 12, and more fine bubbles are generated when the gas-liquid mixed fluid C is discharged from the discharge unit 16.

  Further, according to the fine bubble generating nozzle 10, the driving mechanism 18 and the guide part 36 are provided in the discharge part 16. The gas-liquid mixed fluid D discharged from the discharge unit 16 strikes the driving mechanism 18 and the guide unit 36, thereby promoting the generation of fine bubbles. For example, in this embodiment, the gas-liquid mixed fluid D ejected vigorously from the ejection section 16 hits the guide section 36 and the blade section 60c of the water wheel 60 and is discharged. At this time, in the gas-liquid mixed fluid D, fine bubbles are generated mainly due to rapid decompression when discharged from the discharge port 16a. Further, the gas-liquid mixed fluid D springs out the gas dissolved in the liquid due to the impact hitting the drive mechanism 18 and the guide part 36. Thereby, generation | occurrence | production of a fine bubble is accelerated | stimulated. As described above, the driving mechanism 18 and the guide unit 36 that the gas-liquid mixed fluid D discharged from the discharge unit 16 hits, as a secondary function, promotes the generation of fine bubbles from the gas-liquid mixed fluid D. Play.

  Further, in the fine bubble generating nozzle 10, as shown in FIG. 1, the inside of the gas-liquid mixing unit 12 has a predetermined pressure rather than the outside of the fine bubble generating nozzle 10 by the action of the valve 50 provided in the discharge unit 16. When higher than the above, the discharge port 16a is opened. In addition, the discharge port 16a is not opened unless the pressure inside the gas-liquid mixing unit 12 is higher than a predetermined pressure compared to the outside of the fine bubble generating nozzle 10. As described above, in the fine bubble generating nozzle 10, the discharge unit 16 is opened by the action of the valve 50 when the inside of the gas-liquid mixing unit 12 is higher than the predetermined pressure than the outside of the fine bubble generating nozzle 10. For this reason, in this fine bubble generating nozzle 10, the inside of the gas-liquid mixing part 12 is reliably maintained in a state higher than the fine bubble generating nozzle 10, and the fine bubbles can be generated more reliably.

  Further, in the fine bubble generating nozzle 10, the gas dissolution in the gas-liquid mixing unit 12 is promoted by the action of the stirring member 14. Since the agitating member 14 is operated by the fluid energy of the gas-liquid mixed fluid discharged from the discharge unit 16, it is possible to promote the gas melting in the gas-liquid mixing unit 12 in an energy efficient manner. Further, the gas-liquid mixed fluid D discharged from the discharge unit 16 hits the guide unit 36, the drive mechanism 18, and the like, and fine bubbles are generated by this impact. As described above, the fine bubble generating nozzle 10 uses the fluid energy of the gas-liquid mixed fluid discharged from the discharge unit 16 and can efficiently generate fine bubbles.

  Next, a fine bubble generating nozzle 10A according to another embodiment will be described.

  As shown in FIG. 3, the fine bubble generating nozzle 10 </ b> A includes a water supply port 82 that supplies liquid to the gas-liquid mixing unit 12, a gas supply port 84 that supplies gas, a float 86, and a liquid level adjustment valve 88. I have.

  In this embodiment, as shown in FIG. 3, the gas-liquid mixing unit 12 includes a tank 90 in which the liquid supplied from the water supply port 82 and the gas supplied from the gas supply port 84 are accumulated. In this embodiment, the water supply port 82 and the gas supply port 84 are provided in the upper part of the tank 90. The float 86 is arranged in a floating state on the gas-liquid mixed fluid C <b> 1 in the tank 90. The liquid level adjustment valve 88 is connected to the float 86 and opens and closes the gas supply port 84 according to the operation of the float 86. In this embodiment, the liquid level adjustment valve 88 includes a valve body 84a, a spring 84b, and a connecting member 84c. The valve body 84 a is a member that opens and closes the gas supply port 84. In this embodiment, a ball-shaped member that can be fitted into the gas supply port 84 is used for the valve body 84a. The spring 84b is mounted in a compressed state on the gas supply port 84, and the valve body 84a is pressed against the gas supply port 84 by the elastic reaction force of the spring 84b. The connecting member 84c is connected to the float 86, and pushes up the valve body 84a when the liquid level in the tank 90 rises above a predetermined level.

  In the fine bubble generating nozzle 10A, the liquid A is supplied from the water supply port 42 through the water supply pipe 42a to the tank 90. Further, the compressed air B is supplied from the gas supply port 84 to the tank 90 through the compressed air supply pipe 44 a from the compressor 44. At this time, the liquid level in the tank 90 is maintained by the float 86. When the liquid level rises above a predetermined level, compressed air B is supplied by the action of the liquid level adjusting valve 88. When the pressure in the tank 90 (gas-liquid mixing unit 12) is higher than a predetermined pressure compared to the outside of the fine bubble generating nozzle 10A, the valve 50 provided in the discharge unit 16 is opened, and the gas-liquid mixed fluid Is discharged. Then, the stirring member 14 is operated via the drive mechanism 18 by the fluid energy of the gas-liquid mixed fluid D discharged from the discharge unit 16, and the gas-liquid mixed fluid C in the gas-liquid mixing unit 12 is agitated.

  In the fine bubble generating nozzle 10A, the gas-liquid mixing ratio and pressure of the gas-liquid mixed fluid C1 are adjusted in the tank 90 described above. Thereby, a gas-liquid mixed fluid suitable for generating fine bubbles can be created. Moreover, in this embodiment, the water supply port 82 is arrange | positioned at the upper part of the tank 90 (tank 90 which makes a part of gas-liquid mixing part 12). For this reason, when the liquid A supplied from the water supply port 82 falls on the liquid level of the tank 90, splashing is generated. Thus, splash can be generated in the tank 90, the liquid can easily touch the gas in the tank 90, and the amount of the gas dissolved in the gas-liquid mixed fluid can be increased. Thereby, gas can be efficiently dissolved in the gas-liquid mixed fluid, and fine bubbles can be generated efficiently.

  In this embodiment, the gas-liquid mixing unit 12 has a portion where the stirring member 14 is disposed extending vertically from the lower portion of the tank 90, but the portion where the stirring member 14 is disposed is, for example, You may extend in the horizontal direction from the lower part of the tank 90.

  As mentioned above, although the various fine bubble generation nozzles according to the embodiment of the present invention have been described, the fine bubble generation nozzle according to the present invention is not limited to the above-described embodiment.

  For example, the stirring member only needs to be in a form that can stir the gas-liquid mixed fluid in the gas-liquid mixing unit, and various modifications such as a specific structure may be made. Also, the discharge unit and the valve provided in the discharge unit Also, the structure of the drive mechanism is not limited to the above, and the specific structure may be changed as appropriate so as to achieve a required function. The fine bubbles generated by the fine bubble generating nozzle include various sizes of bubbles such as so-called micro bubbles and nano bubbles. In the above-described embodiment, compressed air is supplied as a gas. However, for example, ozone may be supplied to form fine bubbles of ozone. Moreover, although the liquid illustrated water, seawater etc. may be sufficient.

  Such a fine bubble generating nozzle can constitute a fine bubble generating device by appropriately combining a water pump and a compressor. Such a microbubble generator can be used for a water quality improvement device such as a storm device that sends air into water in a dam, a lake, a bay, or the like. Moreover, you may comprise so that it may drive using natural energy, such as a solar cell.

≪Microbubble generator 100≫
For example, as shown in FIG. 4, the fine bubble generating device 100 has the fine bubble generating nozzle 10 </ b> A installed in the water of the dam 110. The water pump 42 and the compressor 44 are driven by a motor 124 connected to the solar cell 120 and the power generation control device 122. In this embodiment, the water supply pump 42 pumps the water of the dam 110 through the filter 132 and supplies it to the fine bubble generating nozzle 10A. Further, in this embodiment, the water supply pump 42 supplies the gas-liquid mixed fluid in which the outside air is introduced through the air cleaner 134 and the water and air of the dam 110 are mixed. In this case, the gas can be dissolved in the liquid in the water pump 42. For this reason, the gas-liquid mixed fluid in which the gas is further dissolved can be supplied to the gas-liquid mixing unit 12, and the fine bubbles can be efficiently generated by the fine bubble generating nozzle 10A. Further, the compressor 44 supplies the compressed air once stored in the tank 136 to the fine bubble generating nozzle 10A. Thereby, the pressure of compressed air can be stabilized. Thus, the microbubble generator 100 using a solar cell can be comprised.

≪Fine bubble generator 100A≫
Furthermore, on the sea, a large lake, or the like, as shown in FIG. 5, the fine bubble generating device 100 </ b> A may install a solar cell panel 120, a water pump 42, a compressor 44, etc. on the ship 200. In this case, the fine bubble generating nozzle 10A may be installed in the sea (underwater) from the ship 200, and the seawater pumped by the water pump 42 and the compressed air compressed by the compressor 44 may be sent to the fine bubble generating nozzle 10A. . For example, when the fine bubble generating nozzle 10A is installed at a depth of 20 meters in water, the water pressure outside the fine bubble generating nozzle 10A is about 0.2 MPa. In this case, for example, the water pressure of the gas-liquid mixing unit 12 (see FIG. 3) may be set to about 0.5 MPa. Thereby, the gas-liquid mixed fluid discharged from the discharge part 16 is discharged rapidly with a differential pressure of about 0.3 MPa. The drive mechanism 18 can operate the stirring member 14 with the energy of the gas-liquid mixed fluid.

  The supply amount of liquid, the supply amount of compressed air, the pressure, and the like of the water pump 42 may be appropriately set according to the location where the fine bubble generating nozzle is installed. As described above, the configuration example of the microbubble generator is not limited to the above embodiment.

DESCRIPTION OF SYMBOLS 10 Fine bubble generation nozzle 10A Fine bubble generation nozzle 12 Gas-liquid mixing part 12a Inner peripheral surface 14 of gas-liquid mixing part Stirring member 14a Rotating shaft 14b Stirring member 14c Protrusion 16 Discharge part 16a Discharge port 18 Drive mechanism 22 Bearing 22a Support part 24 Bearing 26, 28 Stopper 30 Tubular member 32 Wall 34 Opening 36 Guide part 42 Water supply pump 42a Water supply pipe 44 Compressor 44a Compressed air supply pipe 50 Valve 50a Valve body 50b Sealing material 50c Spring 50d Valve seat 60 Water wheel 60a Boss part 60b Rim part 60c Wing portion 60d Opening 60e Outer cylinder portion 82 Water supply port 84 Gas supply port 84a Valve body 84b Spring 84c Connecting member 86 Float 88 Liquid level adjustment valve 90 Tank 100, 100A Fine bubble generator 110 Dam 120 Solar cell (solar cell panel)
122 Power Generation Control Device 124 Motor 132 Filter 134 Air Cleaner 136 Tank 200 Ship A Liquid B Compressed Air (Gas)
C Gas-liquid mixed fluid (gas-liquid mixed fluid in the gas-liquid mixing section)
C1 Gas-liquid mixed fluid D Gas-liquid mixed fluid (gas-liquid mixed fluid discharged from the discharge unit)

Claims (8)

A fine bubble generating nozzle that discharges a gas-liquid mixed fluid in which liquid and gas are mixed to generate fine bubbles,
A gas-liquid mixing part in which the liquid and gas are mixed;
A stirring member disposed in the gas-liquid mixing section;
A discharge part from which the gas-liquid mixed fluid is discharged from the gas-liquid mixing part;
A drive mechanism for operating the stirring member by the fluid energy of the gas-liquid mixed fluid discharged from the discharge unit;
A nozzle for generating fine bubbles.   2. The fine bubble generating nozzle according to claim 1, wherein the drive mechanism includes a water wheel in the discharge unit, and the stirring member is operated by power obtained by the water wheel.   The fine bubble generating nozzle according to claim 2, further comprising a guide portion that guides the gas-liquid mixed fluid discharged from the discharge portion toward a water turbine.   The said discharge part is provided with the valve opened when the inside of the said gas-liquid mixing part is higher than a predetermined pressure more than the exterior of the said fine bubble generation | occurrence | production nozzle. The described fine bubble generating nozzle. A water supply port for sending liquid to the gas-liquid mixing section;
A gas supply port for supplying gas to the gas-liquid mixing unit;
A float installed in the gas-liquid mixing section;
A liquid level adjustment valve that opens and closes the gas supply port according to the operation of the float;
The fine bubble generating nozzle according to any one of claims 1 to 4, further comprising:   The fine water bubble generating nozzle according to claim 5, wherein the water supply port is disposed at an upper portion of the gas-liquid mixing unit.   A fine bubble generating apparatus comprising the fine bubble generating nozzle according to any one of claims 1 to 6.   The fine bubble generating device according to claim 7, further comprising a water supply pump that supplies a gas-liquid mixed fluid in which a liquid and a gas are mixed to the gas-liquid mixing unit.