KR100739922B1 - Fine air bubble generator and fine air bubble generating device with the generator - Google Patents

Abstract

A fine air bubble generator and a fine air bubble generating apparatus having the same are provided to discharge fine air bubble in a wide range from both sides of the generator by forming gas-liquid outlets at both opposite sides of a spherical main body on a center line with respect to the center of a gas-liquid inlet. A fine air bubble generator includes a main body(1a) having a spherical hollow part, a gas-liquid inlet pipe(1b) fixed to the main body in the tangential direction to a diameter of the container, a gas-liquid inlet(1c) formed in the tangential direction at the container for inserting the gas-liquid inlet pipe to introduce gas-liquid mixture fluid into the main body, and gas-liquid outlets(1d) formed at both ends of the main body in the tangential direction to the center of the gas-liquid inlet of the main body facing the gas-liquid inlet pipe. Curved surfaces(1d') are formed at edge parts of the gas-liquid outlets outward.

Description

 Fine air bubble generator and fine air bubble generator with the same

 The present invention is a microparticle that generates a large amount of fine bubbles in the water of the tank or pool, rivers, lakes, dams, etc. or in the water (sea water) of aquaculture farms or offshore farms or fresh fish carriers, or in the liquid of the gas-liquid reaction tank in a chemical plant It relates to a bubble generator and a micro bubble generator having the same.

 In recent years, fine bubbles are generated to purify water in tanks and rivers, to increase the amount of dissolved oxygen in water, to improve reaction efficiency in gas-liquid reaction tanks of chemical plants, or to generate water-containing bubbles in bathtubs. Various micro bubble generators have been researched and developed, such as facing the surface to obtain a massage effect.

As a conventional microbubble generator, Japanese Unexamined Patent Application Publication No. 2000-447 (hereinafter referred to as (1)) discloses a "container body having a conical space and a part of the inner wall circumferential surface of the same space in a tangential direction thereof. The rotating microbubble generator which consists of the pressurized liquid introduction opening, the gas introduction hole opened in the bottom of the said conical space, and the swirling gas-liquid discharge opening opened in the top of the said conical space is disclosed.

In addition, Japanese Utility Model Publication No. 63-74123 (hereinafter referred to as (2)) provides a liquid supply ball in a tangential direction along the circumferential wall of the mixing chamber, and discharges the air pipe projecting from the rear part of the mixing chamber toward the whole. Disclosed is a suction massage bubble classifying apparatus in which a nozzle is positioned at an injection port of a mixing chamber.

However, the said prior art had the following subjects.

(1) The technique described in (1) discloses that bubbles are coarse and ejected in order to mix gas with a liquid in a conical narrow space, thereby sufficiently securing the contact area between the liquid to be treated and the bubble. There was no problem that the dissolved oxygen amount and the reaction efficiency could not be increased.

(2) Since the gas introduction hole is formed at the bottom of the conical space, the liquid containing bubbles can be discharged only in one direction, and a large amount of water treatment can be efficiently carried out in a wide range of rivers and water purification facilities while controlling the discharge state of the water stream. There was a problem that cannot be carried out.

(3) Since liquid and gas are mixed in the conical space, there are limitations in supplying a large amount of gas, and it is difficult to control the mixing ratio of liquid and gas to a predetermined value.

(4) The pressure in the conical space fluctuates when the pump is turned on and off, and the liquid flows back into the gas introduction hole, which causes the gas introduction hole to be clogged by solids mixed in the liquid, and thus cannot operate continuously.

(5) When the space was pressurized in order to make the bubble finer, liquid had flowed into the gas introduction hole, resulting in poor operability.                 

(6) In the technique described in (2), since the air outlet of the air pipe is disposed immediately near the injection port of the mixing chamber, the water flowing in the mixing chamber and the air in the mixing chamber do not directly contact each other. There was a problem in that fine bubbles of a predetermined size or shape cannot be generated by effectively contacting while maintaining a predetermined contact area.

(7) Since an air pipe having an open end is disposed near the outlet of the nozzle, liquid flows back to the air pipe due to a pressure change in the nozzle, and the air pipe is easily clogged by dust mixed in the liquid, and thus cannot be operated continuously. Had.

(8) Since there is no means for controlling the size or amount of microbubbles formed in the water flow, air more than necessary amount is sucked from the air tube, and furthermore, large bubbles are formed and microbubbles cannot be obtained, thus providing sufficient massage effect and cleaning effect. I had a problem that I could not get.

In order to solve the above-mentioned problems, the present invention provides a gas-liquid solution in a water tank, pool, river, dam, etc. It can generate a large amount of micro bubbles with a very large contact area, and provides a micro bubble generator that can be stably and continuously operated without clogging by reactants or dirt, and can generate fine bubbles in large quantities efficiently and efficiently. An object of the present invention is to provide a microbubble generating device which is very wide and can significantly increase the amount of dissolved oxygen (gas), and is excellent in productivity.

Disclosure of the Invention

In order to solve the above problems, the microbubble generator and the microbubble generator having the same have the following configurations.

The microbubble generator according to claim 1 of the present invention is formed in a substantially rotationally symmetrical container body having a hollow portion which is reduced in diameter toward one or both sides of the axis of rotation of the rotationally symmetrical axis, and opened tangentially to the main wall of the container body. A gas-liquid introduction hole and a gas-liquid ejection hole which is opened in a rotationally symmetrical axis direction and disposed in a portion where the particle diameter of the hollow part is reduced, wherein the gas-liquid ejection hole is slightly combed from the central axis of the container body to the opposite side to the gas-liquid introduction hole side. Perforated arrangement is composed of.

By this configuration, the following actions can be obtained.

(1) When the gas-liquid mixture fluid flows from the gas-liquid introduction hole into the container body from the tangential direction, the gas-liquid mixture fluid is mixed vigorously by turning along the inner wall of the container body, and the gas-liquid jet provided in the direction of rotational symmetry axis of the hollow part is mixed. Go to the side. At this time, centrifugal force acts on the liquid, centripetal force acts on the gas due to the specific gravity difference between the liquid and the gas, and large bubbles converge on the central axis to form a negative compression (gas axis). In addition, due to the negative compression, a force that tries to enter the microbubble generator acts on the liquid near the gas-liquid ejection hole (hereinafter, the liquid causing this force to move is called a negative pressure liquid). On the other hand, as the gas-liquid mixed fluid in the microbubble generator becomes close to the gas-liquid ejection hole while turning, the speed increases with increasing turn speed, and the rotational speed and pressure are maximized in the vicinity of the gas-liquid ejection hole, and are pushed together with the negative pressure liquid. It becomes Therefore, the gas collected in the negative compression passes through the gap formed by the negative pressure liquid and the gas-liquid mixed fluid which is turning, and is ejected into the external liquid while receiving a shear from the gas-liquid ejection hole as a gas-liquid mixed fluid mixed with a large amount of fine bubbles.

(2) The gas-liquid mixed fluid diffused by the negative pressure liquid acts as a shear force between the main wall of the gas-liquid ejection hole and the gas in the gas-liquid mixed fluid collected in the negative compression by the negative pressure liquid, and the gas collected in the negative compression is extremely fine. Since it is ejected together with the mixed fluid from the well-divided gas-liquid ejection hole, a large amount of microbubbles can be generated in the external liquid.

(3) Since the gas-liquid mixed fluid in which the gas and the liquid have been mixed in advance is supplied to the gas-liquid introduction hole, the mixing ratio of the gas can be adjusted, and furthermore, it can be generated in a state in which the generation rate of the fine bubbles is controlled.

(4) The mixed fluid containing the microbubbles can be sufficiently brought into contact with the liquid to be treated, thereby increasing the amount of dissolved oxygen, the reaction efficiency, and the like.

(5) Biological treatment can be carried out extremely efficiently by discharging a mixed fluid containing microbubbles in a river, dam, water purification facility, or the like over a wide range.

(6) When the microbubble generator is used in a gas-liquid reaction device or a sewage treatment device, the microbubble generator is used for injecting gas into the microbubble generator even when the fluid flows back into the container body by the residual pressure (negative pressure) in the device when the pump is turned on or off. Since there is no ball, there is no clogging caused by reactants or dirt, and maintenance is unnecessary, so durability is excellent.
(7) Since the particle size of the microbubbles is remarkably small, the contact area between the gas and the liquid can be increased, and the gas-liquid reaction device can promote the reaction or the purification in the purification device. It may also increase the dissolved oxygen in the number of fish farms, fish farms, or freshwater transport vehicles (sea water).
(8) The negative compression formed by the swirl flow of the gas-liquid mixed fluid introduced into the container body is pushed by the gas-liquid mixed fluid flowing from the gas-liquid introduction hole and slightly combed to the opposite side to the gas-liquid introduction hole, whereby the negative compression is formed. According to the perforated arrangement of the gas-liquid ejection hole can be generated to the maximum microbubbles.

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Here, the microbubble generator is used to purify a water purification plant or stream, to purify livestock wastewater, to supply oxygen during live fish transportation or aquaculture, to increase dissolved oxygen during hydroponic cultivation, and to treat filthy water due to injuries such as a heddle, and a reservoir. Removal of lime, sterilization by ozone mixing, sterilization, deodorization, promotion of blood circulation during bathing, promotion of fermentation and cultivation of washing machines and fermented foods, dissolution and hydration by high density contact of various chemicals and gases, In the gas-liquid reaction apparatus, it can be used to promote gas-liquid reaction, facial cleaner, and the like.

As the liquid, water, a chemical liquid, a chemical reaction liquid, a liquid fuel, or the like can be used.

As the gas, ozone when sterilizing water such as air or pool in a sewage treatment tank or the like, or a reaction gas (HCN, HCl, SO ₂ , NO _2, etc.) may be used in the case of a chemical reaction.

The container body having a hollow portion formed almost in rotational symmetry may be spherical, hemispherical, shell, or conical, and a shape in which hemispherical bottoms are connected through or without a cylindrical portion may be used. In the case of using a container body having a shape in which conical or conical bottoms are connected, the hollow portion has a shape in which the hollow portion converges at once from the rotationally symmetrical axis toward the gas-liquid ejection hole, so that a sharp shear force is applied to the gas-liquid mixed fluid that orbits inside the container body. This function can fully stir even a fluid with high viscosity.
In addition, in the case of shell, truncated cone, and hemispherical shape, a part of the liquid introduced into the container body from the liquid introduction pipe is inverted by moving to the rear wall side, and is moved to the gas-liquid jet hole while turning around the negative compression. Therefore, it can be set as the jet which has straightness.

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Also, the rear wall can be formed concave in the hollow part in reverse, thereby changing the movement of the mixed fluid in the hollow part.

One or more gas-liquid introduction holes are perforated on the main wall of the container body, and the gas-liquid introduction pipe into which the gas-liquid mixed fluid and the liquid are introduced is connected in the tangential direction of the main wall. Thereby, by connecting a supply port, such as a pump or tap water, to a gas-liquid introduction pipe | tube, and making a pressurized water flow, a swirl flow can be generated in a container.

The flow rate of the liquid flowing into the container body through the gas-liquid introduction hole, the diameter of the liquid inlet pipe, the volume of the container, etc. may depend on the required flow rate of the swirl flow, the amount of microbubbles generated in the gas-liquid mixed fluid, and the particle size of the bubble. Therefore, select appropriately.

The gas-liquid jetting hole is opened in the direction of the rotational symmetry axis of the hollow part. The gas-liquid ejection hole is a narrow knot in which the container body converges from the rear side to the whole side, and varies depending on the size of the container body, the flow rate and pressure of the liquid supplied to the container body, but the minimum diameter d is the maximum inner diameter of the hollow part. It is preferable to form about 1/50 thru | or 1/3 times with respect to D, Preferably about 1/30 thru | or 1/5 times. This tends to make it difficult to secure the required flow rate of the liquid as the minimum diameter d of the gas-liquid ejection hole is smaller than 1/30 times the maximum inner diameter D of the container body, and conversely exceeds 1/5 times. This is because a swirling flow of liquid cannot be formed into the container body, which tends to cause a lack of suction force in the center of the jet stream, and these tendencies are also markedly smaller than 1/50 times or more than 1/3 times. It is not preferable because it becomes.                 

The angle α at which the straight line connecting the gas-liquid introduction hole and the center of the container body and the straight line connecting the gas-liquid ejection hole and the center of the container body is 10 ° <α <170 °, preferably 45 ° <α <160 ° May be used. When α> 160 °, the liquid tends to cause a short pulse from the gas-liquid introduction hole to the gas-liquid ejection hole, and when α <45 °, the shear force applied to the fluid is strong but the particle size of the bubble becomes unstable, which is preferable. Not. Generally, about 90 degrees is used suitably.

In the microbubble generator according to claim 2, in the invention according to claim 1, the gas-liquid ejection holes are provided on both left and right sides of the rotationally symmetrical shaft, respectively.

By this structure, the following actions can be obtained in addition to the action of claim 1.

(1) Since the gas-liquid jetting holes are provided on both the left and right sides of the rotational symmetry shaft of the hollow part, the range that can be processed by one microbubble generator can be widened and water treatment by the microbubble generator can be performed efficiently, Productivity and convenience are excellent.

(2) By changing the pore diameter of each gas-liquid ejection hole arranged on the left and right sides of the rotationally symmetrical axis, or by providing a guide or different ejection characteristics, the ejection state of the fine bubbles can be controlled to a predetermined state. Water treatment etc. can be performed efficiently.

(3) Since it has two gas-liquid ejection holes, the ejection amount of the gas-liquid mixed fluid discharged from the microbubble generator can be doubled compared with the amount ejected from the single hole, and a large amount of water treatment can be performed.                 

In the invention described in claim 1 or 2, the microbubble generator according to claim 3 includes an inclined portion whose diameter is widened in the ejecting direction of the gas-liquid ejection hole, and the inclination angle is set to a predetermined range.
By this structure, the following actions can be obtained in addition to the action of claim 1.

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(1) Since the inner circumferential wall of the gas-liquid ejection hole has an inclined portion whose particle diameter is enlarged at a predetermined angle toward the ejecting side, the range in which the gas-liquid mixed fluid containing the gas before it becomes microbubbles or microbubbles is diffused within a predetermined angle. The pressure in the mixed fluid can be reduced, and microbubbles can be effectively generated in the mixed fluid by this partial pressure reduction.

(2) Substantially change the size of the microbubbles or the type of bubbles to diffuse into the mixed fluid by adjusting the length of the angle and the ejecting direction at the inclined portion according to the pressure, flow rate and temperature of the water or fluid to be supplied. You can.

(3) When gas-liquid ejection holes are arranged on both sides of the rotationally symmetrical axis, by varying the inclination angle at each inclined portion, specific orientation can be imparted to the gas-liquid mixed fluid ejected from the microbubble generator as a whole. It is excellent in controllability in a bath or a purification layer.

Here, the angle θ of the inclined portion varies depending on the size of the container body to be used, the flow rate and pressure of the water or liquid to be supplied, and the length of the inclined portion, but is preferably in the range of 30 to 160 °, preferably 65 to 130 °. . This is because the angle θ of the inclined portion is smaller than 65 °, the generation of microbubbles tends to decrease, and conversely, as the angle θ exceeds 130 °, the mixed fluid containing the microbubbles diffuses widely, and the impact force by the mixed fluid is increased. This is because the tendency to fall is increased. Moreover, these tendencies are not preferable because the angle θ of the inclined portion becomes smaller than 30 ° or becomes more significant when it exceeds 160 °. In addition, when the gas-liquid ejection holes are provided on both sides of the container body, the direction of the discharge flow discharged from the microbubble generator can be controlled by varying the inclination angles of the left and right sides of the angle range. When the inclination angle is set to 120 ° ± 10 ° or 75 ° ± 10 °, the amount of gas continuously increases at 120 ° ± 10 ° as the fluid moves in the central axis (negative compression) of the container body. The jetting liquid tries to come out along the surface of the negative pressure liquid which is strongly sucked, and the jetting liquid is dispersed in the direction perpendicular to the axis. At this time, the maximum shear force is applied while passing through the minimum gap portion, so that the bubbles become fine. In addition, the portion of the maximum pressure and the maximum negative pressure meet each other to promote the generation of microbubbles. On the other hand, when the inclination angle is 75 ° ± 10 °, the flow of the fluid toward the front becomes superior to the side having the larger angle, and is strongly ejected. For this reason, the jet flow as a whole is biased toward the side with a small inclination angle, and can have directionality.

The angle θ of such an inclined portion becomes a variable for determining the type of the negative pressure liquid, and the spray direction can be controlled by setting this variable to a predetermined value.

The occurrence of the microbubbles is determined by the shape of the negative pressure liquid in the portion of the minimum diameter d, it is preferable to be in a state that is easy to eject from the container body.                 

When the gas-liquid mixed fluid is ejected, the fluid flows along the spherical surface of the container body side, and the injection side of the inclined angle side becomes less resistant (ie, the flow of the fluid in the tangential direction of the container body spherical surface and the negative pressure liquid). The mixed fluid containing the microbubbles flows in the rear side opposite to the ejection direction of the mixed fluid on the side having a large inclination angle due to the complex effect caused by the generation). In this way, the injection direction of the mixed fluid can be determined according to the purpose.
The microbubble generator according to claim 4, wherein the microbubble generator according to any one of claims 1 to 3 and 24, wherein the cover portion and the extension portion formed of a flexible material and spaced in front of the gas-liquid ejection hole and extended to the cover portion And a fixed cap part fixed to the outer circumferential wall of the container body.
By this structure, the following actions can be obtained in addition to the action of any one of claims 1 to 3 and 24.

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(1) The gas-liquid mixed fluid introduced from the gas-liquid introduction pipe is turned along the inner wall of the container body, and vigorously mixed with the gas-liquid to move to the gas-liquid ejection hole to form negative compression. This negative compression acts on the force that tries to suck the cap into the microbubble generator. On the other hand, the mixed fluid in the container body has a maximum turning speed near the gas-liquid ejection hole and is in a state of being pushed together with the cover portion of the fixed cap portion facing the gas-liquid ejection hole. Therefore, the gas collected in the negative compression is compressed and sheared while turning between the cap portion of the cap portion (the opposing surface of the gas-liquid ejection hole) and the inclined portion of the gas-liquid ejection hole, and is discharged from the gas-liquid ejection hole as a large amount of fine bubbles together with the gas-liquid mixture fluid. Ejected into the liquid. In this way, the cap part is separated from the outside, the formation of the negative pressure liquid is suppressed to the minimum, the ejection turning resistance from the inside of the container body is reduced, the ejection amount can be increased, and the rotation speed can be increased.                 

(2) Since a large amount of microbubbles can be generated in the external fluid, the contact area between the gas and the liquid can be increased to facilitate the purification in the gas-liquid reaction device or the purification device. It may also increase the dissolved oxygen in the number of fish farms, fish farms, or freshwater transport vehicles (sea water).

(3) Since the particle size of the microbubbles is remarkably small, the surface area of the bubbles can be made extremely large, and air or a reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or the reaction rate.

(4) The particle size of the microbubbles can be freely controlled in the range of several nm to 100 µm only by adjusting the inflow amount and the revolution speed of the liquid or gas.

Here, as a method of installing the fixed cap part, a method of directly fixing the extension part to the outer circumferential wall of the container body with an adhesive or the like, a method of protruding the cap support part to the outer circumferential wall of the container body, and fixing the fixed cap part to the protruding arrangement part may be used. Can be.

The microbubble generator of Claim 5 is comprised by the cap support part which supports the said fixed cap part in the other end side which the reference end side is arrange | positioned at the outer peripheral wall of the said container main body in the invention of Claim 4.

By this constitution, the following functions can be obtained in addition to the functions of claim 4.

(1) Since the fixed cap portion is fixed to the cap portion support portion, the fixed cap portion does not act in the rotational direction of the gas-liquid mixed fluid, and the shear force can be effectively exerted between the cover portion of the fixed cap portion and the gas to be ejected. This remarkably small amount of microbubbles can be generated.                 

In the microbubble generator according to claim 6, in the invention according to claim 5, the cap support portion and / or the fixed cap portion are formed of a flexible material such as synthetic resin or rubber.

By this structure, the following actions can be obtained in addition to the action of claim 5.

(1) Since the cap support part and / or the cap part are made of a flexible material, the cap part can be detachably moved with respect to each of the ejection holes within an allowable range such as the nature of the cap support part. Therefore, the cap part is sucked to the gas-liquid ejection hole side by negative compression, and the gas ejected from the gas-liquid ejection hole is compressed and sheared at the ridge formed on the opposing surface of the gas-liquid ejection hole of the cap part. You can.

(2) Opposing the gas-liquid ejection hole of the cap part in response to the flow rate and flow rate of the gas-liquid mixed fluid which is changed according to the discharge pressure of the pump, the diameter of the gas-liquid introduction hole and the gas-liquid ejection hole, and the shape and volume of the container body. Since the gap size between the surface and the gas-liquid ejection hole is changed, it is excellent in versatility.
The microbubble generator according to claim 7 is configured to include a ridge formed in the fixing cap portion of the invention according to claim 4 by being raised to the opposite surface to the gas-liquid ejection hole.
By this structure, the following actions can be obtained in addition to the action described in claim 4.

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(1) Since the fixed cap has a raised and curved protrusion on the back side, the gas-liquid mixed fluid having microbubbles can be flowed along the raised surface.

(2) When the material of the cap portion or the cap support portion is made of a flexible material, since the ridge portion is sucked in the direction of the gas-liquid jet hole by negative compression and the flow path is narrowed, the gas in the fluid ejected from the gas-liquid jet hole is discharged from the protrusion part. Since the particles are compressed and sheared, finer bubbles can be generated in a large amount.

Here, as the ridge, hemispherical or conical gas liquid jet holes having a shape along the outer shape can be used.

The microbubble generator according to claim 8, in the invention according to claim 4, comprises a case-shaped frame disposed on an outer circumferential wall of the container body, a spherical shape sandwiched between the case-shaped frame and the gas-liquid ejection hole, and held therein. It is comprised by the cap part formed in egg shape etc.

By this structure, the following actions can be obtained in addition to the action of claim 4.

(1) Since the cap portion is disposed as a moving material between the gas-liquid ejection hole and the case-shaped frame, the cap portion is sucked in the direction of the gas-liquid ejection hole by negative pressure, and the gas ejected from the gas-liquid ejection hole is compressed and sheared by the cap portion to determine In this case, a stable water flow can be maintained without changing the distance between the cap and the gas-liquid ejection hole.

(2) The gas-liquid ejection hole side and gas-liquid ejection of the cap part in response to the flow rate and flow rate of the gas-liquid mixed fluid which varies depending on the discharge pressure of the pump, the diameter of the gas-liquid introduction hole or the gas-liquid ejection hole, and the shape and volume of the container body. It is possible to change the size of the gap of the ball, which is excellent in stability and controllability of water flow.

(3) In the case where the negative compression is formed in the container body, the cap portion is held at a predetermined position by the suction force of the negative compression and the force in the ejecting direction of the gas-liquid mixed fluid to be ejected, so that the cap contact with the case frame or the gas-liquid ejection hole. There is nothing to do, and it is hard to wear and is excellent in durability.

(4) Since the cap part is provided, foreign matter in the external liquid can be prevented from entering the container body at the time of off.

Here, the case-shaped frame is a member which is disposed at a predetermined interval in front of the gas-liquid jetting hole, and is formed to hold and hold a cap formed in a spherical shape or an egg shape in all of the gas-liquid jetting holes.
The microbubble generator according to claim 9 is a tank unit disposed on the rear wall of the container body in the invention according to any one of claims 1 to 3, 5 to 8 and 24 to 26, between the tank unit and the container body. The tank part gas suction hole formed through the wall part and the tank part gas introduction pipe arrange | positioned at the said tank part are comprised.
By this structure, the following actions can be obtained in addition to the action described in any one of claims 1 to 3, 5 to 8 and 24 to 26.

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(1) Since the tank section is provided, the suction resistance of the air sucked through the tank section gas absorbing hole and the tank section gas introduction pipe can be increased, so that even if the diameter of the tank section gas absorbing hole is increased, the amount of gas is large. It is not sucked in, and gas can be sucked in a stable state.                 

(2) Since the external pressure fluctuation is alleviated by providing a tank having a large capacity, it is possible to easily control the size, shape, and amount of microbubbles generated in the water stream, and the operability is excellent.

(3) Since the diameter of the gas absorption hole of the tank part can be increased, it is difficult to cause malfunction due to clogging of dust or scale, etc., and thus the maintenance is excellent.

Here, as the shape of the tank portion, a cylindrical, hemispherical or the like can be used.

The pore diameter and the quantity of the gas absorption hole in the tank portion can be appropriately selected according to the required suction force, the flow velocity of the swirl flow, and the quantity and particle size of the fine bubbles.
In the invention according to any one of claims 1 to 3, 5 to 8 and 24 to 26, the microbubble generator according to claim 10 is provided toward the direction of the gas-liquid ejection hole and disposed inside the hollow part. And an inner hollow portion connected to the rear side of the inner nozzle portion, and a secondary liquid introducing pipe which is opened in a tangential direction of the inner hollow portion.
By this structure, the following actions can be obtained in addition to the action of any one of claims 1 to 3, 5 to 8 and 24 to 26.

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(1) Since the internal nozzle for ejecting the secondary liquid is provided in the hollow part, the gas-liquid mixed fluid supplied from the liquid introduction pipe and the secondary liquid can be effectively contacted in the hollow part to generate finer bubbles. Productivity can be improved in chemical reactions.

(2) The gas-liquid mixed fluid or liquid continuously introduced from the tangential direction from the secondary liquid introduction pipe into the internal hollow portion moves to the inner nozzle part while turning. At this time, a centrifugal force acts on the liquid, and the center of the swirl flow becomes a negative pressure, thereby forming a negative compression in which the gas in the liquid is collected at the center. On the other hand, the liquid flowing into the hollow portion from the gas-liquid introduction hole moves to the gas-liquid ejection hole side while turning. In this way, the fluid supplied through the secondary liquid introduction pipe and the gas-liquid introduction hole in the hollow part may join, and may generate a large amount of fine bubbles.

(3) In the hollow part, a gas-liquid mixed fluid can be ejected from the secondary liquid introduction pipe in a forward or reverse direction from the direction of liquid ejection from the gas-liquid introduction hole. When the direction of rotation of the gas-liquid mixed fluid to be ejected is reversed to that of the liquid in the hollow part, the gas focused on the negative compression instantly becomes a microbubble, and is mixed with the liquid in the hollow part and ejected from the gas-liquid ejection hole. Even if the gas-liquid ejection hole is arranged in the air, a liquid containing a large amount of fine bubbles can be ejected.

(4) Since there are no pores for blowing gas into the hollow part, when the microbubble generator is used in a gas cleaning tank or a sewage treatment tank in a chemical reaction tank or chemical petroleum front, residual pressure in the device may be reduced when the pump is turned on or off. Remains, even if the fluid flows back, it does not cause blockage by reactants or dirt.

(5) Since it can be made into microbubbles, the surface area of the bubbles is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.

Here, the liquid supplied to the secondary liquid introduction pipe may be the same kind or different from the fluid supplied to the gas liquid introduction hole, and water, chemical liquid, reaction liquid, liquid fuel, and the like may be used. The inner nozzle portion may be of a cone, sphere, hemispherical, cone, hemisphere, or shell type.

The particle diameter of the bubble blown into the fluid from the gas-liquid ejection hole is appropriately selected by the revolution speed based on the discharge pressure of the fluid from each liquid introduction pipe or the shape of each nozzle.

The microbubble generator according to claim 11 is provided in the multi-stage in the form of a box that can be superimposed on the hollow portion in the invention of claim 10, the inner nozzle portion, the inner hollow portion, the secondary liquid introduction pipe It is composed.
With this configuration, in addition to the operation of claim 10, the following operation can be obtained.

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(1) More kinds of liquids and gases can be mixed by introducing various different liquids or gases into each swirl flow generating unit.

(2) The mixed fuel can be produced at a high oxygen rate by one treatment, and the combustion efficiency of the boiler and the like can be improved.

(3) Waste gases and reaction gases having different kinds of factories such as chemical plants can be supplied to the neutralizing liquid, the washing liquid and the reaction liquid at the same time.

(4) Ozone gas may be supplied from aquaculture farms and then air may be used to achieve high sterilization and high oxygen content at the same time.
In the microbubble generator according to claim 12, in the invention described in claim 10, the secondary liquid introduction pipe is connected in the tangential direction in the same direction as or opposite to the gas liquid introduction hole on the rear side of the inner nozzle portion.
With this configuration, in addition to the operation of claim 10, the following operation can be obtained.

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(1) Since the gas-liquid mixture fluid enters the hollow portion from the inner nozzle portion to the hollow portion, the gas-liquid mixture fluid and the liquid can be efficiently mixed.

(2) The swirling force of the liquid from the inner nozzle portion is applied to the swirling force of the gas-liquid mixed fluid, so that a stronger swirl flow is generated, so that the strength is good and a large amount of fine bubbles can be ejected and diffused more widely.

(3) Absorption rate or reaction rate of gas into the liquid in the microbubble generator formed in multiple stages when the liquid introduction hole of the secondary liquid introduction hole or the internal nozzle portion connected in series is opened in the tangential direction opposite to the gas liquid introduction hole. Can increase.

(4) By adjusting the revolution speed of the liquid in the hollow portion or in each inner nozzle portion, a large amount of fine bubbles can be ejected from the gas-liquid ejection hole.
In the microbubble generator according to claim 13, in the invention according to claim 10, the inner nozzle part gas suction hole is arranged on the rear wall of the inner hollow portion or on the rear wall of the inner hollow part of the swirl flow generating unit.
By this structure, in addition to the action of Claim 10, the following action can be obtained.

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(1) The gas-liquid mixed fluid or liquid continuously introduced from the tangential direction from the secondary liquid introduction pipe into the internal hollow portion moves to the inner nozzle portion while turning. At this time, the centrifugal force acts on the liquid, and the center of the swirl flow becomes negative pressure, so that gas is sucked from the internal nozzle part gas absorption hole, and the sucked gas is collected at the center to form negative compression. On the other hand, the liquid flowing into the hollow portion from the gas-liquid introduction hole moves to the gas-liquid ejection hole side while turning. In this way, the fluid supplied through the secondary liquid introduction tube and the gas-liquid introduction hole in the hollow portion may be joined, thereby producing a large amount of fine bubbles.

In the hollow portion, the gas-liquid mixed fluid can be ejected from the secondary liquid introduction pipe in a forward or reverse direction to the ejection direction of the fluid from the gas-liquid introduction hole.

The force to enter the inner nozzle part is applied to the liquid near the inner nozzle part by negative compression of the inner nozzle part. On the other hand, the gas-liquid mixed fluid containing gas from the inner nozzle portion gas absorption hole moves while turning inside the inner nozzle portion, and as the approaching speed of the inner nozzle portion approaches the ejection hole, the pressure is increased and the pressure is increased, and the ejection hole at the tip is increased. In the vicinity, the turning speed and pressure are maximized, and they are in a state of pushing with the negative pressure liquid. The gas-liquid mixed fluid flows out from the vicinity of the edge portion of the secondary jet hole to avoid negative pressure liquid. When it flows out, the compressed gas of the negative compression becomes a microbubble, is sheared, ejected with the gas-liquid mixed fluid into the hollow part, mixed with the liquid in the hollow part, and then ejected from the gas-liquid ejection hole.

(2) Since it can be made into microbubbles, the surface area of the bubbles is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.

As the gas supplied to the internal nozzle gas absorption hole, air is used in a sewage treatment tank, ozone is used to sterilize water such as a pool, and in the case of a chemical reaction, reaction gas (HCN, HCl, SO) is used. ₂ , NO _2, etc.) can be used.
The microbubble generator having the microbubble generator according to claim 14 is a microbubble generator according to any one of claims 1 to 13 and 24 to 32, a pump for supplying a gas-liquid mixture to the microbubble generator, the downstream side is And a gas-liquid suction pipe connected to the suction port of the pump, and a gas-liquid discharge pipe connected to the discharge port of the pump and a downstream side to the gas-liquid introduction hole of the microbubble generator.

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By this configuration, the following actions can be obtained.

(1) Since the microbubble generator does not have micropores for blowing gas, residual pressure remains in the device when the pump is turned on or off, so that even if the fluid flows back, it will not be blocked by the fluid or solids.

(2) The gas-liquid mixed fluid sucked in the pump is stirred together with the liquid by the impeller of the pump, and is discharged from the discharge port of the pump to the gas-liquid discharge tube as the air bubbles diffuse.

(3) Since the gas-liquid mixed fluid supplied from the gas-liquid discharge tube to the microbubble generator is stirred in the hollow portion to form fine bubbles, bubbles having a smaller particle diameter can be generated than in the prior art.

(4) The gas-liquid mixing fluid flowing from the gas-liquid discharge pipe through the gas-liquid introduction hole into the microbubble generator from the tangential direction moves violently into the gas-liquid ejection hole while vigorously mixing the gas-liquid mixture by turning in the hollow part, and the bubble moves to the central axis. The negative pressure is concentrated to form a negative compression. As the gas-liquid mixed fluid in the microbubble generator turns to approach the gas-liquid ejection hole as it turns, the turning speed increases and the pressure increases, so that the turning speed and pressure are maximized in the vicinity of the gas-liquid ejection hole and pushed together with the negative pressure liquid. do. The gas collected in the negative compression passes while being compressed and sheared at intervals formed by the negative pressure liquid and the gas-liquid mixed fluid that is turning, and is ejected from the gas-liquid ejection hole into the external liquid as a fluid containing a large amount of fine bubbles.

Here, the microbubble generating device is a water purification plant, rivers, lakes, dams, purification of livestock wastewater, oxygen supply during live fish transportation or aquaculture, increase of dissolved oxygen during hydroponic cultivation, injury due to heddle, etc. Sewage water treatment, removal of lime in the reservoir, sterilization, sterilization, deodorization by ozone mixing, promotion of blood circulation during bathing, promotion of fermentation and cultivation of washing machines, fermented foods, dissolution by high density contact of various chemicals and gases, and It can be used for neutralization, gas-liquid reaction of chemical plant, promotion of gas-liquid reaction, facial cleaner, etc.

As the pump, land-mounted type or submersible pump may be used. As the kind, a centrifugal pump, a rotary pump, an inclined flow pump, and an axial flow pump can be appropriately determined according to the kind or flow rate of the liquid.

By changing the pipe diameter of the gas-liquid suction pipe and the capacity of the pump, the flow rate of the liquid flowing in the gas-liquid suction pipe can be changed, so that the amount of gas sucked into the gas-liquid suction pipe can be changed.

The microbubble generator according to claim 15 and the microbubble generator having the same are provided with a suction pipe gas absorbing hole installed in a predetermined portion of the gas-liquid suction pipe in the invention according to claim 14.

With this configuration, in addition to the operation of claim 14, the following operation can be obtained.

(1) The gas is sucked into the gas-liquid suction pipe from the gas suction hole of the suction pipe part, and since the microbubble generator has no micropores for blowing gas, the residual pressure remains in the device when the pump is turned on or off, and the fluid flows back. Does not cause blockage

(2) When the pump is driven, water flow is generated in the gas-liquid suction pipe, and the gas is sucked into the gas-liquid suction pipe from the gas-suction hole in the gas-liquid suction pipe part by the ejector effect, as a subsequent flow of liquid. In this way, a gas-liquid mixed fluid containing gas is sucked into the pump from the inlet of the pump. The gas-liquid mixed fluid sucked in the pump is discharged from the discharge port of the pump into the gas-liquid discharge tube while the air bubbles are diffused by the impeller of the pump.

(3) Since the flow rate of the gas supplied from the gas suction hole of the suction pipe part can be controlled, the amount, size, etc. of the microbubbles can be adjusted suitably.

The microbubble generating device provided with the microbubble generator according to claim 16 is provided with a gas introduction tube whose one end is connected to the suction pipe part gas absorbing hole and the other end is opened in air or in communication with the reaction gas container. It is configured by.

With this configuration, in addition to the operation of claim 15, the following operation can be obtained.

(1) The desired gas can be introduced into the gas-liquid suction pipe by communicating the gas introduction pipe with a desired container or the like.                 

Here, by opening one end of the gas self-contained pipe in the air, the air can be introduced into the gas introduction pipe, and the amount of dissolved oxygen in the farm (fish farm), the fish farm, and the number of live transport vehicles (sea water) can be increased.

By communicating one end of the gas self-contained pipe to the reaction gas container, the gas-liquid reaction can be promoted in the gas-liquid reaction apparatus of the chemical plant.

The microbubble generator having the microbubble generator according to claim 17 is, in the invention described in claim 16, provided with a gas flow rate control valve disposed at a predetermined portion of the gas introduction pipe and adjusting the opening area of the gas introduction pipe. do.

With this configuration, in addition to the operation of claim 16, the following operation can be obtained.

(1) By adjusting the gas flow rate control valve, the amount of gas mixed into the liquid can be adjusted, so that the size of the generated microbubbles can be adjusted.

The microbubble generating apparatus provided with the microbubble generator of Claim 18 is comprised in the invention of Claim 16 or 17, Comprising: The air pump arrange | positioned in the predetermined part of the said gas introduction pipe is comprised.

By this configuration, the following actions can be obtained in addition to the actions of Claim 16 or 17.

(1) Since the gas can be forcibly supplied by the air pump, the amount of gas mixed in the liquid can be increased.

The microbubble generating device provided with the microbubble generator of Claim 19 is comprised in the invention of any one of Claims 14-18, Comprising: It is comprised so that the said pump may be a submersible pump which can be used by immersing the whole in liquid.

By this structure, the following actions can be obtained in addition to the actions described in any one of claims 14 to 18.

(1) Since the submersible pump is disposed in the liquid, it does not require a place for arranging the pump on land, so the usability is excellent.

(2) Since the fluid is sucked directly from the inlet of the submersible pump, and no gas-liquid suction pipe is required, the number of parts is small and the productivity is excellent.

(3) Since the inlet port is opened in the liquid, residual pressure is not applied when the submersible pump is turned on or off, and the fluid does not flow back into the gas introduction pipe and thus does not cause clogging.

The microbubble generating device provided with the microbubble generator according to claim 20 is, in the invention described in claim 19, the submersible pump is formed in a gear shape in the form of a cogwheel, the suction chamber incorporating the impeller, in the tangential direction of the main wall of the suction chamber The connected gas-liquid discharge pipe, an inlet opening facing the rotary shaft portion of the impeller to suck the surrounding liquid, a gas introduction pipe having an opening of the reference stage in the vicinity of the intake opening, and a motor for rotating the impeller. It is comprised with a motor room.

By this structure, the following actions can be obtained in addition to the actions of claim 19.

(1) By rotating the impeller formed in a gear shape in the suction chamber, the surrounding liquid is sucked into the suction chamber by sucking the surrounding liquid from the suction port opened to face the rotation axis of the impeller, and in the tangential direction of the main wall of the suction chamber. The gas-liquid mixed fluid can be discharged from the connected gas-liquid discharge pipe.

(2) Since the motor chamber with the motor for driving the impeller and the suction chamber with the impeller are integrally formed, the whole body can be made compact, so that the portability and the material properties of the installation are excellent and can be easily applied to a water purification plant or a sedimentation tank. Can be.

In the microbubble generating device provided with the microbubble generator according to claim 21, in the invention according to claim 20, the submerged pump is connected to a negative pressure portion to which the gas inlet pipe disposed with an open end at the suction port and connected at one end thereof. A branch pipe is connected to a predetermined portion of the gas-liquid discharge tube and the other end is connected to the negative pressure portion.

By this structure, the following actions can be obtained in addition to the action of claim 20.

(1) Since the branch pipe is disposed near the suction port of the submersible pump, negative pressure is generated in the branch pipe, and the negative pressure allows the gas to be sucked from the gas introduction pipe into the negative pressure pipe and mixed into the liquid.

(2) Since the inner diameter of the negative pressure pipe is larger than that of the branch pipe, when the fluid flows from the branch pipe into the negative pressure pipe, negative pressure is generated in the negative pressure pipe, whereby the gas is sucked into the negative pressure pipe from the gas introduction pipe and the liquid It is mixed in the middle.

(3) Since the branch pipe is opened near the inlet of the submersible pump, residual pressure is not applied when the submersible pump is turned on or off, and fluid does not flow back into the gas introduction pipe, thereby causing no clogging.
In the microbubble generating device provided with the microbubble generator according to claim 22, in the invention according to claim 18, the impeller of the air pump is arranged in association with the rotation shaft of the pump or the submersible pump.
In this configuration, in addition to the operation of claim 18, the following operation can be obtained.

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(1) Since a drive unit such as an air pump motor is not required separately, the productivity is excellent and the entire apparatus can be miniaturized.
In the microbubble generator having the microbubble generator according to claim 23, in the invention according to any one of claims 14 to 17, 20 to 22, and 33 to 36, a plurality of the microbubble generators are provided. Each liquid discharge pipe is connected to the gas-liquid introduction hole of the microbubble generator.
With this configuration, in addition to the action of any one of claims 14 to 17, 20 to 22 and 33 to 36, the following actions can be obtained.

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(1) Since a plurality of microbubble generators can be used to eject a large amount of microbubbles from each gas-liquid ejection hole in a predetermined direction, the microbubbles can be ejected more extensively.
(2) By adjusting the angle of the inclined portion of each gas-liquid ejection hole, it is possible to effectively control a discharge state of all water streams and to perform a wide range of water treatment effectively.
In the invention according to claim 2, the microbubble generator according to claim 24 is provided with an inclined portion in which the gas-liquid ejection hole has a larger particle diameter in the ejecting direction, and the inclination angle is set in a predetermined range.
By this structure, the following actions can be obtained in addition to the action of Claim 2.
(1) Since the inner circumferential wall of the gas-liquid ejection hole has an inclined portion whose particle diameter is enlarged at a predetermined angle toward the ejecting side, the gas-liquid mixed fluid containing the microbubbles and the gas before becoming microbubbles is limited within a predetermined angle. The inside of the mixed fluid can be reduced in pressure, and by this partial pressure reduction, microbubbles can be effectively generated in the mixed fluid.
(2) In the inclined portion, the angle and the length of the ejection direction are respectively adjusted according to the pressure, flow rate, temperature, etc. of the water or fluid to be supplied, so that the size of the microbubbles diffused into the mixed fluid, the aggregate form of the bubbles, etc. are delicately made. Can change.
(3) When gas-liquid ejection holes are arranged on both sides of the rotationally symmetrical axis, by varying the inclination angle at each inclined portion, specific orientation can be imparted to the gas-liquid mixed fluid ejected from the microbubble generator as a whole. It is excellent in detergency in a reaction tank, a purification layer, etc.
In the microbubble generator of Claim 25, in the invention of Claim 5, the said fixed cap part is comprised by the ridge part formed by protruding to the opposing surface with the said gas-liquid ejection hole.
By this structure, the following actions can be obtained in addition to the action of claim 5.
(1) Since the ridge has a curved and protruding ridge on the rear surface side of the fixed cap portion, the gas-liquid mixed fluid having fine bubbles can flow while guiding along the surface of the ridge portion.
(2) When the material of the cap part and the cap support part is made of a flexible material, since the ridge is sucked in the direction of the gas-liquid jet hole by the negative compression and the flow path is narrowed, the gas in the fluid ejected from the gas-liquid jet hole is raised. Because it is compressed and sheared at, the finer bubbles can be generated in a large amount.
The microbubble generator of Claim 26 is comprised in the invention of Claim 6, Comprising: The said fixed cap part is provided with the ridge | bulb part formed by protruding to the opposing surface with the said gas-liquid jet hole.
By this structure, the following actions can be obtained in addition to the action of claim 6.
(1) Since the ridge has a curved and protruding ridge on the rear surface side of the fixed cap portion, the gas-liquid mixed fluid having fine bubbles can flow while guiding along the surface of the ridge portion.
(2) When the material of the cap part and the cap support part is made of a flexible material, since the ridge is sucked in the direction of the gas-liquid jet hole by the negative compression and the flow path is narrowed, the gas in the fluid ejected from the gas-liquid jet hole is raised. Because it is compressed and sheared at, the finer bubbles can be generated in a large amount.
The micro-bubble generator according to claim 27, in the invention according to claim 4, the tank portion disposed on the rear wall of the container body, the tank portion gas suction hole formed through the wall portion between the tank portion and the container body, the tank The tank part gas introduction pipe | tube arrange | positioned at the part is comprised.
By this structure, the following actions can be obtained in addition to the action of claim 4.
(1) Since the tank section is provided, the suction resistance of the air sucked through the tank section gas suction hole and the tank section gas introduction pipe can be increased, so that even if the diameter of the tank section gas suction hole is increased, the amount of gas is large. It is not sucked in, and gas can be sucked in a stable state.
(2) Since an external pressure fluctuation is alleviated by providing a tank having a large capacity, it is possible to easily control the size, shape, and amount of generation of microbubbles generated in the water stream, and the operability is excellent.
(3) Since the diameter of the gas suction hole in the tank part can be increased, it is difficult to cause malfunction due to the clogging of dust or scale, etc., and thus the maintenance is excellent.
The microbubble generator according to claim 28 is, in the invention according to claim 4, an inner nozzle portion disposed in the hollow portion and disposed in the direction of the gas-liquid ejection hole, and connected to a rear side of the inner nozzle portion. And a secondary liquid introduction pipe disposed open in the tangential direction of the internal hollow portion.
By this structure, the following actions can be obtained in addition to the action of claim 4.
(1) Since the internal nozzle for ejecting the secondary liquid is provided in the hollow part, the gas-liquid mixed fluid supplied from the liquid introduction pipe and the secondary liquid can be effectively contacted in the hollow part to generate finer bubbles. Productivity can be improved in chemical reactions.
(2) The gas-liquid mixed fluid or liquid continuously introduced from the tangential direction from the secondary liquid introduction pipe into the internal hollow portion moves to the inner nozzle part while turning. At this time, a centrifugal force acts on the liquid, and the center of the swirl flow becomes a negative pressure, thereby forming a negative compression in which the gas in the liquid is collected at the center. On the other hand, the liquid flowing into the hollow portion from the gas-liquid introduction hole moves to the gas-liquid ejection hole side while turning. In this way, the fluid supplied through the secondary liquid introduction pipe and the gas-liquid introduction hole in the hollow part is joined, and a large amount of fine bubbles can be generated.
(3) In the hollow part, a gas-liquid mixed fluid can be ejected from the secondary liquid introduction pipe in a forward or reverse direction from the direction of ejection of the liquid from the gas-liquid introduction hole. When the direction of rotation of the gas-liquid mixed fluid to be ejected is reversed to that of the liquid in the hollow portion, the gas converged in the negative compression instantly becomes a microbubble and is mixed with the liquid in the hollow portion to be ejected from the gas-liquid jet hole. Even if the gas-liquid ejection hole is arranged in the air, a liquid containing a large amount of fine bubbles can be ejected.
(4) Since there are no pores for blowing gas into the hollow part, when the microbubble generator is used in a gas cleaning tank or a sewage treatment tank in a chemical reaction tank or chemical petroleum front, residual pressure in the device may be reduced when the pump is turned on or off. Remains, even if the fluid flows back, it does not cause blockage by reactants or dirt.
(5) Since it can be made into microbubbles, the surface area of the bubbles is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.
The microbubble generation according to claim 29 is, in the invention according to claim 28, the swirling flow generating portion having the inner nozzle portion, the inner hollow portion, and the secondary liquid introduction pipe is multistage in a box shape that can overlap the hollow portion. Installed and configured.
With this configuration, in addition to the operation of claim 28, the following operation can be obtained.
(1) More kinds of liquids and gases can be mixed by introducing various different liquids or gases into each swirl flow generating unit.
(2) The mixed fuel can be produced at a high oxygen rate by one treatment, and the combustion efficiency of the boiler and the like can be improved.
(3) Waste gases and reaction gases having different kinds of factories such as chemical plants can be supplied to the neutralizing liquid, the washing liquid and the reaction liquid at the same time.
(4) Ozone gas may be supplied from aquaculture farms and then air may be used to achieve high sterilization and high oxygen content at the same time.
The microbubble generator according to claim 30 is a tangential direction in the same direction as or opposite to the gas-liquid introduction hole of the rear side of the inner nozzle portion, in the invention according to any one of claims 11, 28 and 29. It is opened and connected.
With this configuration, in addition to the action of any one of claims 11, 28 and 29, the following action can be obtained.
(1) Since the gas-liquid mixed fluid enters into the hollow portion from the inner nozzle portion, the gas-liquid mixed fluid and the liquid can be efficiently mixed.
(2) Since the swirling force of the liquid from the inner nozzle portion is applied to the swirling force of the gas-liquid mixed fluid, stronger swirling flow is generated, so that the strength is good and a large amount of fine bubbles can be ejected and diffused more widely.
(3) If the secondary liquid introduction hole or the liquid introduction hole of the inner nozzle part connected in series is opened in the tangential direction opposite to the gas liquid introduction hole, the absorption rate and the reaction rate of the gas into the liquid in the multistage microbubble generator are It can increase.
(4) By adjusting the revolution speed of the liquid in the hollow portion or in each inner nozzle portion, a large amount of fine bubbles can be ejected from the gas-liquid ejection hole.
The microbubble generator according to claim 31 is, in the invention according to any one of claims 11, 12, 28, and 29, wherein the microbubble generator is provided on the rear wall of the inner hollow portion or on the rear wall of the inner hollow portion of the swirl flow generating portion disposed at the end. The nozzle part gas suction hole is arrange | positioned and comprised.
By this structure, in addition to the action of any one of Claims 11, 12, 28, and 29, the following action can be obtained.
(1) The gas-liquid mixed fluid or liquid continuously introduced from the tangential direction from the secondary liquid introduction pipe into the internal hollow portion moves to the inner nozzle portion while turning. At this time, a centrifugal force acts on the liquid, and the center of the swirl flow becomes a negative pressure, thereby forming a negative compression in which the gas in the liquid is collected at the center. On the other hand, the liquid flowing into the hollow portion from the gas-liquid introduction hole moves to the gas-liquid ejection hole side while turning. In this way, the fluid supplied through the secondary liquid introduction pipe and the gas-liquid introduction hole in the hollow part is joined, and a large amount of fine bubbles can be generated.
In the hollow portion, the gas-liquid mixed fluid can be ejected from the secondary liquid introduction pipe in a forward or reverse direction from the direction of ejection of the liquid from the gas-liquid introduction hole.
The force to enter the inner nozzle part is applied to the liquid near the inner nozzle part by negative compression of the inner nozzle part. On the other hand, the gas-liquid mixed fluid containing the gas from the inner nozzle part gas suction hole moves while turning inside the inner nozzle part, and as the approaching speed of the inner nozzle part approaches the ejection hole, the pressure is increased and the pressure is increased, and the ejection hole of the tip is increased. In the vicinity, the turning speed and pressure are maximized, and they are in a state of being pushed together with the negative pressure liquid. The gas-liquid mixed fluid flows out from the vicinity of the edge portion of the secondary jet hole to avoid negative pressure liquid. When it flows out, the compressed gas of the negative compression becomes a microbubble, is sheared, ejected with the gas-liquid mixed fluid into the hollow part, mixed with the liquid in the hollow part, and then ejected from the gas-liquid ejection hole.
(2) Since it can be made into microbubbles, the surface area of the bubbles is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.
In the microbubble generator according to claim 32, in the invention according to claim 30, the inner nozzle part gas suction hole is disposed on the rear wall of the inner hollow portion or the rear wall of the inner hollow portion of the swirl flow generating portion.
With this configuration, in addition to the operation of claim 30, the following operation can be obtained.
(1) The gas-liquid mixed fluid or liquid continuously introduced from the tangential direction from the secondary liquid introduction pipe into the internal hollow portion moves to the inner nozzle portion while turning. At this time, a centrifugal force acts on the liquid, and the center of the swirl flow becomes a negative pressure, thereby forming a negative compression in which the gas in the liquid is collected at the center. On the other hand, the liquid flowing into the hollow portion from the gas-liquid introduction hole moves to the gas-liquid ejection hole side while turning. In this way, the fluid supplied through the secondary liquid introduction pipe and the gas-liquid introduction hole in the hollow part is joined, and a large amount of fine bubbles can be generated.
In the hollow portion, the gas-liquid mixed fluid can be ejected from the secondary liquid introduction pipe in a forward or reverse direction from the direction of ejection of the liquid from the gas-liquid introduction hole.
The force to enter the inner nozzle part is applied to the liquid near the inner nozzle part by negative compression of the inner nozzle part. On the other hand, the gas-liquid mixed fluid containing the gas from the inner nozzle part gas suction hole moves while turning inside the inner nozzle part, and as the approaching speed of the inner nozzle part approaches the ejection hole, the pressure is increased and the pressure is increased, and the ejection hole of the tip is increased. In the vicinity, the turning speed and pressure are maximized, and they are in a state of being pushed together with the negative pressure liquid. The gas-liquid mixed fluid flows out from the vicinity of the edge of the secondary jet hole to avoid negative pressure liquid. When it flows out, the compressed gas of the negative compression becomes a microbubble, is sheared, ejected with the gas-liquid mixed fluid into the hollow part, mixed with the liquid in the hollow part, and then ejected from the gas-liquid ejection hole.
(2) Since it can be made into microbubbles, the surface area of the bubbles is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.
The microbubble generator provided with the microbubble generator of Claim 33 is comprised so that the said pump may be a submersible pump used by immersing the whole in the liquid in the invention of Claim 18.
In this configuration, in addition to the operation of claim 18, the following operation can be obtained.
(1) Since the submersible pump is disposed in the liquid, it does not require a place for arranging the pump on land, so the usability is excellent.
(2) Since the fluid is sucked directly from the inlet of the submersible pump, and no gas-liquid suction pipe is required, the number of parts is small and the productivity is excellent.
(3) Since the inlet port is opened in the liquid, residual pressure is not applied when the submersible pump is turned on or off, and the fluid does not flow back into the gas introduction pipe and thus does not cause clogging.
The microbubble generator having the microbubble generator according to claim 34 is, in the invention described in claim 33, wherein the submersible pump is formed in a cogwheel shape, an intake chamber incorporating the impeller, and in the tangential direction of the main wall of the suction chamber. The connected gas-liquid discharge pipe, an inlet opening facing the rotary shaft portion of the impeller to suck the surrounding liquid, a gas introduction pipe having an opening of the reference stage in the vicinity of the intake opening, and a motor for rotating the impeller. It is comprised with a motor room.
By this structure, the following actions can be obtained in addition to the actions of claim 33.
(1) By rotating an impeller formed in a gear shape in the suction chamber, the surrounding liquid is sucked into the suction chamber by sucking the surrounding liquid from the suction port opened to face the rotation axis of the impeller, and in the tangential direction of the main wall of the suction chamber. The gas-liquid mixed fluid can be discharged from the connected gas-liquid discharge pipe.
(2) Since the motor chamber with the motor for driving the impeller and the suction chamber with the impeller are integrally formed, the whole body can be made compact, so that the portability and the material properties of the installation are excellent and can be easily applied to a water purification plant or a sedimentation tank. Can be.
The microbubble generating device provided with the microbubble generator according to claim 35 is, in the invention according to claim 34, wherein the submerged pump is connected to a negative pressure portion to which the gas introduction pipe disposed with an open end at the suction port is connected; A branch pipe is connected to a predetermined portion of the gas-liquid discharge tube and the other end is connected to the negative pressure portion.
By this structure, the following actions can be obtained in addition to the actions of claim 34.
(1) Since the branch pipe is disposed near the suction port of the submersible pump, negative pressure is generated in the branch pipe, and the negative pressure allows the gas to be sucked from the gas introduction pipe into the negative pressure pipe and mixed into the liquid.
(2) Since the inner diameter of the negative pressure pipe is larger than that of the branch pipe, when the fluid flows from the branch pipe into the negative pressure pipe, negative pressure is generated in the negative pressure pipe, whereby the gas is sucked into the negative pressure pipe from the gas introduction pipe and the liquid It is mixed in the middle.
(3) Since the branch pipe is opened near the inlet of the submersible pump, residual pressure is not applied when the submersible pump is turned on or off, and fluid does not flow back into the gas introduction pipe, thereby causing no clogging.
In the microbubble generating apparatus provided with the microbubble generator of Claim 36, in the invention of Claim 19, the impeller of the said air pump is comprised by being interlocked with the rotating shaft of the said pump or the submersible pump.
In this configuration, in addition to the operation of claim 19, the following operation can be obtained.
(1) Since a drive unit such as an air pump motor is not required separately, the productivity is excellent and the entire apparatus can be miniaturized.
The microbubble generator having the microbubble generator according to claim 37 is, in the invention according to any one of claims 20, 21 and 33 to 35, the impeller of the air pump, the rotation axis of the pump or the submerged pump It is arranged in conjunction with the configuration.
With this configuration, in addition to the action of any one of claims 20, 21, and 33 to 35, the following actions can be obtained.
(1) Since a drive unit such as an air pump motor is not required separately, the productivity is excellent and the entire apparatus can be miniaturized.
The microbubble generator having the microbubble generator according to claim 38, in the invention according to claim 18, is provided with a plurality of the microbubble generators, and the gas-liquid discharge pipe is connected to the gas-liquid introduction hole of each of the microbubble generators. It is composed. In this configuration, in addition to the operation of claim 18, the following operation can be obtained.
(1) Since a plurality of microbubble generators can be used to eject a large amount of microbubbles from each gas-liquid ejection hole in a predetermined direction, the microbubbles can be ejected more extensively.
(2) By adjusting the angle of the inclined portion of each gas-liquid ejection hole, it is possible to effectively control a discharge state of all water streams and to perform a wide range of water treatment effectively.
In the microbubble generator having the microbubble generator according to claim 39, in the invention of claim 19, the microbubble generator is provided with a plurality, and the gas-liquid discharge pipe is connected to the gas-liquid introduction hole of each of the microbubble generators. It is composed.
In this configuration, in addition to the operation of claim 19, the following operation can be obtained.
(1) Since a plurality of microbubble generators can be used to eject a large amount of microbubbles from each gas-liquid ejection hole in a predetermined direction, the microbubbles can be ejected more extensively.
(2) By adjusting the angle of the inclined portion of each gas-liquid ejection hole, it is possible to effectively control a discharge state of all water streams and to perform a wide range of water treatment effectively.
In the microbubble generator having a microbubble generator according to claim 40, in the invention of claim 37, a plurality of the microbubble generators are provided, and the gas-liquid discharge pipe is connected to the gas-liquid introduction hole of each of the microbubble generators. It is composed.
With this configuration, in addition to the operation of claim 37, the following operation can be obtained.
(1) Since a plurality of microbubble generators can be used to eject a large amount of microbubbles from each gas-liquid ejection hole in a predetermined direction, the microbubbles can be ejected more extensively.
(2) By adjusting the angle of the inclined portion of each gas-liquid ejection hole, it is possible to effectively control a discharge state of all water streams and to perform a wide range of water treatment effectively.

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1A is a perspective view of main parts of the microbubble generator of Embodiment 1;                 

1B is a front view of main parts of the microbubble generator of Embodiment 1;

1C is a side view illustrating main parts of the microbubble generator of Embodiment 1;

2 is a front view showing the main portion showing the state of the fluid inside the micro-bubble generator;

3A is a perspective view of main parts of the microbubble generator of Embodiment 2;

3B is a front view of main parts of the microbubble generator of Embodiment 2;

3C is a side view illustrating main parts of the microbubble generator of Embodiment 2;

4A is a perspective view of main parts of the microbubble generator of Embodiment 3;

4B is a front view of main parts of the microbubble generator of Embodiment 3;

4C is an essential part side view of the microbubble generator of Embodiment 3;

5A is a perspective view of main parts of the microbubble generator of Embodiment 4;

5B is a front view of main parts of the microbubble generator of Embodiment 4;

5C is a side view illustrating main parts of the microbubble generator of Embodiment 4;

6A is a perspective view of main parts of the microbubble generator of Embodiment 5;

6B is a front view of main parts of the microbubble generator of Embodiment 5;

6C is a side view illustrating main parts of the microbubble generator of Embodiment 5;

7 is a use state diagram of the microbubble generating device of Embodiment 6;

8 is a use state diagram of the microbubble generating device according to the seventh embodiment;

9 is an internal configuration diagram of a submersible pump according to the seventh embodiment;

10 is a use state diagram of the microbubble generating device according to the eighth embodiment;

11 is an internal configuration diagram of a submersible pump and an air pump according to the eighth embodiment;                 

12A is a plan view of a main portion showing the connecting portion of the microbubble generator of the microbubble generator according to the ninth embodiment;

12B is a sectional view of the principal parts showing the connecting portion of the microbubble generator of the microbubble generator according to the ninth embodiment;

13 is a sectional side view of the main portion of the microbubble generator of Embodiment 10;

14A is a perspective view of main parts of the microbubble generator of Embodiment 11;

14B is a side view of main parts of the microbubble generator of Embodiment 11;

14C is a front view of main parts of the microbubble generator of Embodiment 11;

FIG. 15 is a sectional view showing the main parts of a fluid in the microbubble generator of the eleventh embodiment; FIG.

16A is a perspective view of main parts of the microbubble generator of Embodiment 12;

16B is a front view of main parts of the microbubble generator of the twelfth embodiment;

16C is a side view illustrating main parts of the microbubble generator according to the twelfth embodiment;

17 is a front view showing the principal parts of the microbubble generator of the twelfth embodiment, showing the state of the fluid;

18A is a perspective view of main parts of the microbubble generator of Embodiment 13;

18B is a front view of main parts of the microbubble generator of Embodiment 13;

18C is a side view of the main portion of the microbubble generator of Embodiment 13;

19 is a principal part front state diagram showing a state of a fluid of the microbubble generator of Embodiment 13;                 

20A is a perspective view of a microbubble generator of Embodiment 14;

20B is a back view of the microbubble generator of Embodiment 14;

21 is a configuration diagram of a microbubble generating device of Embodiment 15;

Fig. 22 is a sectional view of the principal parts showing the state of the fluid inside the microbubble generator of Embodiments 14 and 15;

23A is a perspective view of a microbubble generator according to the sixteenth embodiment;

23B is a rear view of the microbubble generator of the sixteenth embodiment;

24 is a configuration diagram of a microbubble generating device of Embodiment 17;

25A is a perspective view of a microbubble generator according to the eighteenth embodiment;

25B is a back view of the microbubble generator of the eighteenth embodiment;

26 is a configuration diagram of a microbubble generating device of embodiment 19;

Fig. 27 is a sectional view of the principal parts showing the state of the fluid inside the microbubble generators of Embodiments 18 and 19;

28A is a perspective view of a microbubble generator of embodiment 20;

28B is a rear view of the microbubble generator of embodiment 20;

29 is a configuration diagram of a microbubble generating device of Embodiment 21;

30A is a perspective view of a microbubble generator according to the twenty-second embodiment;

30B is a rear view of the microbubble generator of embodiment 22;

31 is a configuration diagram of a microbubble generating device of Embodiment 23;

32 is a sectional view of the principal parts showing the state of the fluid inside the microbubble generator of Embodiments 22 and 23;

33A is a perspective view of main parts of the microbubble generator of embodiment 24;

33B is a sectional side view of the main part thereof;

34 is an explanatory diagram of a use state of the microbubble generator according to the twenty-fourth embodiment;

35 is a sectional side view of the main portion of the microbubble generator of Embodiment 25;

Fig. 36 is a sectional view showing the main parts of the rear side of the tank portion in the twenty-fifth embodiment of the gas cylinder;

Best Mode for Carrying Out the Invention

(Embodiment 1)

The microbubble generator in Embodiment 1 will be described below with reference to the drawings.

FIG. 1A is a perspective view of main parts of the microbubble generator in Embodiment 1, FIG. 1B is a front view of the main part thereof, and FIG. 1C is a main part side view thereof.

1, (1) is the microbubble generator in Embodiment 1, (1a) is a container body having a spherical hollow portion, (1b) is a container body so as to be orthogonal (tangentially) to the diameter of the container body (1a). The gas-liquid introduction tube fixed to (1a), (1c) is the gas-liquid introduction hole of the gas-liquid introduction tube 1b opened tangentially to the container main body 1a, (1d) is the gas-liquid introduction hole of the container main body 1a It is a gas-liquid jetting hole provided in the both ends of the radial direction orthogonal to the center toward (1c) from (1c).

The gas-liquid ejection hole 1d is perforated at the position slightly deviated from the central axis of the container main body 1a to the opposite side to the gas-liquid introduction hole 1c side. The negative compression formed between the gas-liquid ejection holes 1d and 1d by the swirling flow of the gas-liquid mixture fluid introduced into the container body 1a is pressed by the gas-liquid mixture fluid flowing from the gas-liquid introduction hole 1c, This is because it slightly combs to the opposite side to 1c). The microbubbles can be generated to the maximum by puncturing the gas-liquid ejection hole 1d in accordance with the position at which the negative compression is formed.

The intersection angle α between the straight line connecting the gas-liquid introduction hole 1c and the center of the container body 1a and the straight line connecting the gas-liquid ejection hole 1d and the center of the container body 1a is 10 ° <α. <170 °, preferably 45 ° <α <160 °, more preferably depending on the kind of the liquid, but 60 ° <α <120 °. The tendency of the fluid to generate a short pulse from the gas-liquid introduction hole 1c to the gas-liquid ejection hole 1d as α> 120 ° is found. As α <60 °, the shear force applied to the fluid becomes stronger, but the particle size of the bubble There is a tendency to become unstable, and depending on the type of liquid as α> 160 ° or α <45 °, these tend to become larger, and when α> 170 ° and α <10 °, they tend to become larger. Because it is not desirable. Especially preferably, it may set to 90 degrees.

The microbubble generator in Embodiment 1 configured as described above will be described with reference to the drawings.

2 is a sectional view showing the principal part showing the state of the fluid inside the microbubble generator;                 

In FIG. 2, (1) is a microbubble generator, (1a) is a container body, (1b) is a gas-liquid introduction tube, (1c) is a gas-liquid introduction hole, (1d) is a gas-liquid ejection hole, and these are the same as in FIG. Therefore, the same reference numerals are used to omit the description. In the first embodiment, the curved surface 1d 'is formed so that the edge portion of the gas-liquid jetting hole 1d widens outward.

(1e) is a gap in the gas-liquid ejection hole (1d) formed by the negative pressure liquid from the outside and the gas-liquid mixture fluid turning inside the container body (1a), and X is the gas-liquid mixture fluid turning inside the container body (1a). It is a negative compression that is formed.

When the gas-liquid mixture fluid flows from the gas-liquid introduction hole 1c into the container body 1a (from the tangential direction), the gas-liquid mixture fluid moves more toward the gas-liquid ejection hole 1d while turning the gas-liquid mixture fluid more vigorously by turning. Goes. At this time, the centrifugal force acts on the liquid, the centripetal force acts on the gas, and the negative compression X is formed on the central axis side due to the difference in specific gravity between the liquid and the gas. Further, due to the negative compression X, a force that the external liquid tries to enter into the gas-liquid jet 1d acts on the liquid in the vicinity of the gas-liquid jet 1d. On the other hand, as the gas-liquid mixed fluid in the container body 1a approaches the gas-liquid ejection hole 1d while turning, the turning speed becomes high, and the turning speed becomes maximum near the gas-liquid ejection hole 1d and pushes each other with the negative pressure liquid. It is in a state. Therefore, the gas collected in the negative compression X passes through the gap 1e formed by the gas-liquid mixed fluid and the negative pressure liquid that has been turned into a compressor body, and follows the curved surface 1d 'of the microbubble generator 1. It becomes a fluid containing a large amount of micro bubbles, and is ejected into the liquid phase from the gas-liquid ejection hole 1d.

At this time, a curved surface 1d 'is formed at the edge portion (side surface) of the gas-liquid ejection hole 1d, and pressure is applied to the gas at the curved surface 1d' and sheared, so that a larger amount of finer bubbles are fluidized. And is blown out.

According to the microbubble generator of Embodiment 1 comprised as mentioned above, the following effects can be acquired.

(1) In the container body 1a of the microbubble generator 1, since the gas-liquid ejection hole 1d is punctured at the center line at the symmetrical positions on both sides with respect to the gas-liquid introduction hole 1c, the microbubble is made fine. It is possible to eject a wide range from both sides of the bubble generator 1.

(2) Since the microbubble generator 1 is spherical, the microbubbles can be ejected more widely from the gas-liquid jet hole 1d to the periphery of the container body 1a by the pressure of the negative pressure liquid.

(3) When the gas collected in the negative compression X is ejected, the gas is sheared while being compressed by the negative pressure liquid, whereby a finer and larger amount of bubbles can be ejected.

(4) When the microbubble generator 1 is used in a gas-liquid reaction device or a sewage treatment device, even if the liquid flows back due to the residual pressure (negative pressure) in the device when the pump is turned on or off, the microbubble generator 1 supplies gas. Since there are no micropores for blowing, clogging by reactants or dirt does not occur.

(5) Since the microbubble generator 1 does not have micropores for blowing gas, it does not cause backflow even when the inside of the container body 1a is at a high pressure, so a large amount of gas-liquid mixed fluid can be supplied thereby. Fine and large amounts of bubbles can be ejected.

(6) Since a large amount of fine bubbles can be generated, the contact area between the gas and the liquid can be increased, and the reaction in the gas-liquid reaction device and the purification of the river, dam, and sewage treatment plant can be promoted. It may also increase the dissolved oxygen in the number of fish farms, fish farms, or freshwater transport vehicles (sea water).

(Embodiment 2)

Next, the microbubble generator of a shape different from the microbubble generator of Embodiment 1 is demonstrated, referring drawings below.

FIG. 3A is a perspective view of main parts of the microbubble generator in Embodiment 2, FIG. 3B is a front view of the main part thereof, and FIG. 3C is a main part side view thereof.

In Fig. 3, (1a) is a container body, (1b) is a gas-liquid introduction tube, (1c) is a gas-liquid introduction hole, (1d) is a gas-liquid ejection hole, and since they are the same as those of Embodiment 1, they are given the same reference numerals and explanation thereof. Omit.

(2) is the microbubble generator in Embodiment 2, and (2a) is a truncated cone type nozzle integrally formed or connected to the gas-liquid ejection hole 1d.

According to the microbubble generator of Embodiment 2 comprised as mentioned above, in addition to the operation of Embodiment 1, the following effects can be acquired.

(1) According to the arrangement angle of the nozzle 2a, the microbubbles can be ejected in a desired direction.

(2) Since the nozzle 2a has a shape that is tightened toward the discharge direction, the fine bubbles can be discharged farther.

(Embodiment 3)                 

FIG. 4A is a perspective view of main parts of the double microbubble generator of Embodiment 3, FIG. 4B is a front view of the main part thereof, and FIG. 4C is a main part side view thereof.

(3) is the microbubble generator of the second type in the third embodiment, (3a ') is a container body having a shape in which two spherical portions 3a are connected and arranged, and the hollow portions of these two spherical portions 3a are in communication with each other. It is. (3b) is a gas-liquid introduction pipe whose one end is connected to the communication part of two spherical parts 3a, and (3c) is the gas-liquid introduction pipe 3b which opened in the tangential direction of the two communication parts of the spherical part 3a. The gas-liquid introduction hole of (3d) is a gas-liquid ejection hole which is respectively punctured at both ends in the axial direction of the spherical portion 3a orthogonal to the gas-liquid introduction pipe 3b.

The gas-liquid mixed fluid introduced from the gas-liquid introduction hole 3c flows from the tangential direction of each spherical portion 3a of the container body 3a 'and moves inside each spherical portion 3a in the same manner as in the first embodiment. Thereafter, the liquid is ejected from the gas-liquid ejection hole 3d.

According to the microbubble generator of Embodiment 3 configured as described above, in addition to the operation of Embodiment 1, since the microbubble generator 3 has four gas-liquid jet holes 3d, the microbubbles can be blown out more extensively. I can get the action.

(Embodiment 4)

FIG. 5A is a perspective view of main parts of the microbubble generator in Embodiment 4, FIG. 5B is a front view of the main part thereof, and FIG. 5C is a main part side view thereof.

In Fig. 5, reference numeral 4 denotes a microbubble generator having a hemisphere portion and a cylindrical portion extending to the rear portion of the hemisphere portion in Embodiment 4, 4a is a hemisphere portion in which the hollow portion is formed in a hemispherical shape, and 4a 'is a cylinder of bolt. (4b) is a gas-liquid introduction pipe fixed in a tangential direction to the cylindrical portion 4a ', and 4c is a gas-liquid ejection hole of the gas-liquid ejection pipe 4b opened in a tangential direction to the cylindrical portion 4a', 4d is a gas-liquid jetting hole which is punctured at the top of the hemisphere 4a.

According to the microbubble generator of Embodiment 4 comprised as mentioned above, in addition to the operation (2)-(5) of Embodiment 1, it has the effect | action which can spray the ejected gas liquid in one direction, and can also be comprised compactly. .

(Embodiment 5)

FIG. 6A is a perspective view of main parts of the microbubble generator in Embodiment 5, FIG. 6B is a main part front view thereof, and FIG. 6C is a main part side view thereof.

6, (5) is a microbubble generator in Embodiment 5, (5a) is a container body having the shape of a hollow portion in which two conical bodies (5a1) are communicated to the central cylindrical body portion (5a), (5b ) Is a gas-liquid introduction tube fixed in a tangential direction of the cylindrical body portion 5a2 of the container body 5a, and 5c is a gas-liquid introduction of the gas-liquid introduction tube 5b opened in the tangential direction of the cylindrical body portion 5a2. Ball, 5d, is a gas-liquid jetting hole that is punctured at each top of each conical body 5a1.

According to the microbubble generator of Embodiment 5 comprised as mentioned above, in addition to the function of Embodiment 4, the container main body 5a has the shape which converges at once from the gas-liquid introduction hole 5c toward the gas-liquid ejection hole 5d. Therefore, a sharp shear force acts on the fluid turning inside the container body 5a, and even a fluid having a high viscosity can obtain a sufficient stirring action.

Embodiment 6

The microbubble generating device according to the sixth embodiment will be described below with reference to the drawings.

FIG. 7 is a state diagram of use of the microbubble generating device in Embodiment 6 including the microbubble generator in Embodiment 1. FIG.

In Fig. 7, (1) is a microbubble generator in Embodiment 1, (11) is a microbubble generator in Embodiment 6, (12) is a pump having a suction port 12a and a discharge port 12b, and (13) ) Is a gas-liquid suction pipe whose downstream side is connected to the inlet 12a of the pump 12, (14) is an upstream side connected to the discharge port 12b of the pump 12, and the downstream side is the gas-liquid of the microbubble generator 1 The gas-liquid discharge pipe 15 connected to the inlet pipe 1b, and the gas connected to the gas absorption hole 15a of the suction pipe whose one end is opened in air and the other end is drilled at a predetermined portion of the gas-liquid suction pipe 13 It is an introduction tube.

16 is a gas flow rate control valve disposed in a predetermined portion of the gas introduction pipe 15, 17 is a strainer for preventing the incorporation of foreign matter disposed at the upstream end of the gas-liquid introduction pipe 13, ( 18) is a liquid phase such as a gas tank in which the microbubble generator 1 and the strainer 17 are submerged, or a gas-liquid reaction tank in a sea, a pool, or a chemical plant.

The microbubble generating device according to the sixth embodiment configured as described above will be described with reference to the accompanying drawings.

When the pump 12 is driven, the liquid in the liquid phase 18 flows into the gas-liquid suction pipe 13 via the strainer 17. The gas is sucked from the gas introduction pipe 15 into the gas liquid suction pipe 13 in the gas absorption hole 15a of the gas liquid suction pipe 13 as a subsequent flow of liquid to form a gas-liquid mixed fluid, and the suction port 12a of the pump 12 ) Into the pump 12. The gas-liquid mixed fluid sucked into the pump 12 is discharged into the gas-liquid discharge pipe 14 from the discharge port 12b of the pump 12 by the air bubble diffused by the impeller (not shown) of the pump 12, It is introduced into the microbubble generator (1).

Since the operation in the microbubble generator 1 is the same as that of Embodiment 1, the description is abbreviate | omitted.

In addition, although the gas introduction pipe 15 is connected to the gas absorption hole 15a of the gas-liquid suction pipe 13, the microbubble generating device 11 connects only the gas absorption hole 15a without connecting the gas introduction pipe 15 to each other. Even if the gas inlet pipe 13 is disposed or the end of the gas inlet pipe 15 is disposed in the gas liquid suction pipe 13 and the ejector method is used, the gas is self-contained into the gas liquid suction pipe 13, and thus can be carried out in the same manner.

According to the microbubble generating device of Embodiment 6 configured as described above, the following actions can be obtained.

(1) Since the gas sucked into the gas-liquid suction pipe 13 diffuses by the impeller in the pump 12, minute bubbles can be generated.

(2) By adjusting the gas flow rate control valve 16, the amount of gas sucked into the gas-liquid suction pipe 13 can be adjusted, so that the amount of microbubbles can be adjusted.

In addition, although the microbubble generator described in Embodiment 1 was used in Embodiment 6, it can implement similarly also using the microbubble generator described in Embodiments 2-5.

(Embodiment 7)

Next, the microbubble generating device according to the seventh embodiment will be described with reference to the drawings.

FIG. 8 is a state diagram of use of the microbubble generating device in Embodiment 7, and FIG. 9 is a configuration diagram of main parts of the submersible pump in Embodiment 7. FIG.

8 and 9, (1) is a microbubble generator in Embodiment 1, (1a) is a container body, (1b) is a gas-liquid introduction pipe, (1c) is a gas-liquid introduction hole, (1d) is a gas-liquid ejection hole And (16) are gas flow rate control valves, and (18) are liquid phases, and since they are the same as those in Embodiments 1 and 6, the same reference numerals are used to omit the description.

21 is a microbubble generating device according to the seventh embodiment, 22 is a submersible pump having a suction port 22a and a discharge port 22b, 22c is a suction chamber of the submersible pump 22, and 22d is a suction The motor chamber separated from the chamber 22c, 22e is a motor in which the rotating shaft disposed in the motor chamber 22d reaches the suction chamber 22c, and 22f is an impeller disposed at the rotating shaft of the motor 22e, 22g) is a strainer for preventing foreign matter from entering the suction port 22a of the submerged pump 22. The strainer hole of the strainer 22g is formed smaller than the inner diameter of the branch pipe mentioned later. As a result, clogging caused by foreign matter in the branch pipe can be prevented.

Numeral 23 denotes a gas-liquid discharge tube whose upstream side is connected to the discharge port 22b of the submersible pump 22, numeral 24 denotes a branch tube whose upstream side is connected to a predetermined portion of the gas-liquid discharge tube 23, and The downstream side is opened in the vicinity of the inlet port 22a of the submersible pump 22 and the downstream side of the branch pipe 24 is connected to the upstream side, so that the negative pressure pipe whose inner diameter is larger than the branch pipe 24, 26 is the upstream side. The gas introduction pipe which has the air flowmeter which retreats at an opening end part, and the downstream side is connected to the negative pressure pipe 25, 27 is arrange | positioned at the opening end of the upstream side of the gas introduction pipe 26, and the gas introduction pipe 26 Air flow meter to check the gas intake to

The microbubble generating device according to the seventh embodiment configured as described above will be described with reference to the accompanying drawings.

When the motor 22e is driven and the impeller 22f is rotated, the liquid in the liquid phase 18 is sucked into the suction chamber 22c from the suction port 22a via the strainer 22g. The liquid introduced into the suction chamber 22c is discharged into the gas-liquid discharge pipe 23 from the discharge port 22b, and a part of the liquid flows into the negative pressure pipe 25 through the branch pipe 24.

When the liquid flows from the branch pipe 24 into the negative pressure pipe 25, since the inner diameter of the negative pressure pipe 25 is larger than the inner diameter of the branch pipe 24, the pressure in the negative pressure pipe 25 is increased. It becomes smaller than the pressure in (24), and a negative pressure generate | occur | produces. Moreover, since the opening part of the downstream side of the negative pressure pipe 25 is arrange | positioned near the suction port 22a, the negative pressure by the suction force of the impeller 22f also generate | occur | produces. Due to these negative pressures, gas is sucked from the gas introduction pipe 26 into the negative pressure pipe 25 and mixed into the liquid, thereby producing a gas-liquid mixed flow. The gas-liquid mixture flows from the negative pressure tube 25 to the suction chamber 22c via the suction port 22a and flows into the gas-liquid discharge tube 23 while making some fine bubbles by the impeller 22f. The gas-liquid mixture flows into the microbubble generator 1 through the gas-liquid discharge pipe 23, and a large amount of microbubbles are ejected as a fluid from the gas-liquid ejection hole 1d.

Since the operation of the fluid in the microbubble generator 1 is the same as that of Embodiment 1, the description is abbreviate | omitted.

In addition, an end portion of the gas introduction pipe 26 connected to the submersible pump 22 is connected to the wastewater of the pump disposed on the land, the intake port of the water supply pipe of the pump is placed in the water, and an intake portion for blowing air into the water supply pipe is provided. By installing, it is possible to supply a water stream containing air to the micro-bubble generator (1).

In addition, the submersible pump 22 can be arranged in series through a water pipe to supply a large amount of water flow including microbubbles to a distant place or a deep water depth.

According to the microbubble generating device of Embodiment 7 configured as described above, the following actions can be obtained.

(1) Since the submersible pump 22 is disposed in the liquid phase 18, it does not require a place for disposing the pump on land, and is excellent in usability.

(2) Since the fluid is directly sucked from the inlet port 22a of the submersible pump 22 and no gas-liquid suction tube is required, the number of parts is small and the productivity is excellent.

(3) Since the negative pressure pipe 25 is disposed near the inlet port 22a of the submersible pump 22, the residual pressure is not applied when the submersible pump 22 is turned on and off, so that the fluid flows into the gas introduction pipe 26. Does not reverse flow and does not cause blockage.

(4) Since the amount of gas flowing into the gas-liquid suction pipe can be adjusted by adjusting the gas flow rate control valve 7, the amount of fine bubbles can be adjusted.

(5) Since the rotational force of the impeller 22f of the submersible pump 22 can be used directly, the pressure bubble is small and the microbubble generator 1 can be efficiently operated.

(6) A plurality of microbubble generators 1 are disposed at 22c of the submersible pump 22, and a large amount of microbubbles are generated to purify dams and rivers.                 

In the seventh embodiment, the microbubble generator described in the first embodiment is used, but the same can be implemented using the microbubble generators described in the second to fifth embodiments.

Embodiment 8

Next, the microbubble generating device in the eighth embodiment will be described with reference to the drawings.

FIG. 10 is a use state diagram of the microbubble generating device in Embodiment 8, and FIG. 11 is an internal configuration diagram of an air pump / submersible pump in Embodiment 8. FIG.

10 and 11, reference numeral 28a denotes an air supply unit having an inlet port 28b and an outlet port 28c disposed above the submersible pump 28 for an air pump, and 28d is an air supply unit 28a. The drive chamber 28e is an impeller arranged on a rotating shaft projecting upward of the motor 22e. The rotary shaft of the motor 22e protrudes only downward in the seventh embodiment, but protrudes upward and downward in the eighth embodiment.

Denoted at 29 is a first gas introduction pipe in which an air flowmeter, which is described later, is connected to an inlet 28b of an air sending section 28a, and an air flow meter described later is disposed at an opening end on an upstream side. An air flow meter disposed at an opening end of the upstream side of the tank 29 and for confirming the gas intake amount to the first gas introduction pipe 29; and 31, the outlet port 28c of the submersible pump 28 for use as an air pump. A second gas introduction pipe connected to a predetermined portion of the negative pressure pipe 25 and a downstream side thereof connected to the predetermined portion of the negative pressure pipe 25; . When the gas is sufficiently supplied into the negative pressure pipe 25 by the submersible pump 28 or the impeller 22f combined with the air pump, the branch flow control valve 32 is closed to secure the flow rate in the gas liquid discharge pipe 23.

For the convenience of description in the drawings, the microbubble generator has been described as being disposed in one submersible pump 22, but a plurality of microbubble generators are provided around the suction chamber 22c of the submersible pump 28 for an air pump. Also good. In this case, all gas-liquid discharge pipes 23 may be provided with branch pipes.

The microbubble generating device according to the eighth embodiment configured as described above will be described with reference to the accompanying drawings.

When the impeller 22f of the submersible pump 22 is rotated by driving the motor 22e, the liquid of the liquid phase 18 is sucked into the suction chamber 22c from the suction port 22a via the strainer 22g. The liquid introduced into the suction chamber 22c is discharged into the gas-liquid discharge pipe 23 from the discharge port 22b, and a part of the liquid flows into the negative pressure pipe 25 through the branch pipe 24.

In addition, when the liquid flows from the branch pipe 24 into the negative pressure pipe 25, since the inner diameter of the negative pressure pipe 25 is formed larger than that of the branch pipe 24, the negative pressure in the negative pressure pipe 25 is reduced. This happens. Moreover, since the opening part of the downstream side of the negative pressure pipe 25 is arrange | positioned near the suction port 22a, the negative pressure by the suction force of the impeller 22f also generate | occur | produces.

On the other hand, since the impeller 28e of the submersible pump 28 for air pump is also arrange | positioned on the rotating shaft of the motor 22e, gas is the 1st gas introduction pipe 29, the submersible pump 28 for air pump, and the 2nd. The gas is introduced into the negative pressure pipe 25 through the gas introduction pipe 31.

By the negative pressure and the earth output by the air pump 28, the negative pressure pipe passes through the first gas introducing pipe 29, the air sending part 28a, the second gas introducing pipe 31, and the check valve 28f. Gas is sucked into (25) and incorporated into the liquid to produce a gas-liquid mixture. The gas-liquid mixture flows from the negative pressure tube 25 to the suction chamber 22c via the suction port 22a, and is introduced into the gas-liquid discharge tube 23 while some bubbles are produced by the impeller 22f. The gas-liquid mixture flows into the microbubble generator 1 through the gas-liquid discharge pipe 23, and a large amount of microbubbles are ejected as a fluid from the gas-liquid ejection hole 1d.

Since the operation of the fluid in the microbubble generator 1 is the same as that of Embodiment 1, the description is abbreviate | omitted.

According to the microbubble generating device of Embodiment 8 configured as described above, in addition to the operation of Embodiment 7, the following actions can be obtained.

(1) Since the impeller 28e of the air delivery pipe 28a is arrange | positioned at the rotating shaft of the motor 22e of the submersible pump 22, it is not necessary to provide a separate drive part for air delivery, and it is excellent in productivity and downsized Is possible.

(2) In addition to the change in the inner diameter from the branch pipe 24 to the negative pressure pipe 25 and the negative pressure by the impeller 22f, the gas is sucked by the suction force of the submersible pump 28 for both an air pump and the negative pressure pipe 25. In this case, the suction power of the gas as the whole device is improved, and microbubbles can be generated even in a deep sea portion with high water pressure or a liquid having a high specific gravity.

(3) When gas can be introduced into the negative pressure pipe 25 only by the negative pressure by the impeller 22f and the suction force of the submersible pump 28 combined with the air pump, the branch liquid flow control valve 23 is adjusted by adjusting the branch flow control valve. ) Can be secured sufficiently.

(4) By attaching a plurality of microbubble generators around the submersible pump, gas liquids containing a large amount of microbubbles can be released.

In addition, although the microbubble generator of Embodiment 1 was used in Embodiment 8, it can implement similarly also using the microbubble generator of Embodiments 2-5.

(Embodiment 9)

Next, the microbubble generating device according to the ninth embodiment will be described with reference to the drawings.

FIG. 12A is a plan view of the main parts of the microbubble generator of the microbubble generator in Embodiment 9, and FIG. 12B is a side view thereof.

In Fig. 12, (1) is a microbubble generator, (1a) is a spherical container body arranged in a columnar shape, (1b) is a gas-liquid introduction tube, (1c) is a gas-liquid introduction hole, (1d) is a gas-liquid ejection hole And (14) are gas-liquid discharge pipes for supplying gas-liquid to each gas-liquid introduction pipe 1b, and since they are the same as those in Embodiments 1 and 6, the same reference numerals are omitted and the description thereof is omitted.

In the gas-liquid discharge pipe 14 of the microbubble generator of Embodiment 9, the gas-liquid introduction hole 1b of the some microbubble generator 1 is connected. The gas-liquid mixed fluid flows into each micropore generator 1 from the gas-liquid discharge pipe 14, and a fluid containing a large amount of microbubbles is ejected from each gas-liquid ejection hole 1d.

According to the microbubble generator according to the ninth embodiment configured as described above, the fluid containing the microbubbles is ejected from the plurality of microbubble generators 1 at once, thereby obtaining the effect of releasing a large amount of microbubbles more widely. Can be.                 

Embodiment 10

Next, the microbubble generating device according to the tenth embodiment will be described with reference to the drawings.

13 is a sectional side view of the main portion of the microbubble generator in the tenth embodiment.

In Fig. 13, reference numeral 40 denotes the microbubble generator of the tenth embodiment, 41 denotes a container body having a hollow portion formed substantially in rotational symmetry, and 42 denotes a gas liquid tangentially opened to the circumferential wall of the container body 41. Inlet hole (43) is a gas-liquid introduction pipe connected to the gas-liquid introduction hole (42), (44, 45) is a gas-liquid ejection hole (opened) at left and right sides of the rotationally symmetrical axis of the container body (41), and (46) It is an inclined portion formed to have a diameter wider in the fluid ejection direction of the ejection holes (44, 45).

The microbubble generator 40 according to the tenth embodiment is implemented in that the angles θ2 and θ1 of the inclined portions 46 of the gas-liquid ejection holes 44 and 45 which are opened to the left and right of the container body 41 are different from each other. It is different from the microbubble generator 1 of the form 1.

Here, the angle θ1 of the inclined portion is in the range of 40 to 75 °, and the angle θ2 is in the range of 100 to 160 °.

As a result, the flow of the gas-liquid mixed fluid including the microbubbles ejected to both the left and right sides of the microbubble generator 40 is the gas-liquid jet in which the flow on the gas-liquid jet hole 45 side, which is the smaller angle as a whole, is larger. It is superior to the ball 44 side. For this reason, the flow of the gas-liquid mixed fluid discharged from the gas-liquid jet hole 44 as a whole is attracted to the gas-liquid jet hole 45 side, and as a whole, the gas-liquid mixed fluid can be discharged, making it directional to the gas-liquid jet hole 45 side. .                 

In addition to the adjustment of the angle at the inclined portion 46, the ratio (d1 / D or d2 / D) of the minimum diameters d2 and d1 of the respective gas-liquid ejection holes 44 and 45 to the maximum diameter D of the hollow portion (d). By making them different from right to left, each flow rate can be balanced, and by these settings, the flow state and the stirring state in the reaction vessel or the like can be controlled appropriately.

Since the microbubble generator 40 of Embodiment 10 is comprised as mentioned above, in addition to the operation of Embodiment 1, the following actions can be obtained.

(1) Since the inner peripheral walls of the gas-liquid ejection holes 44 and 45 have an inclined portion 46 that increases in diameter at a predetermined angle toward the ejecting side, the range in which the water flow including the microbubbles diffuses is limited within a predetermined angle. The pressure in the water flow can be changed, and the partial pressure fluctuation can effectively generate microbubbles in the fluid.

(2) By adjusting the angle of the inclined portion 46 and the length of the jetting direction according to the water quality, pressure, flow rate, temperature, etc. of the water to be supplied, the size of the fine bubbles diffused in the water flow, the aggregate form of the bubbles, etc. are subtle. Can be changed.

(3) Since the gas-liquid ejection holes 44 and 45 are arrange | positioned at both sides of the rotation symmetry shaft, the inclination angle in each inclination part 46 differs, and the flow of water blown out from the microbubble generator 40 as a whole is carried out. A specific fragrance can be provided, and the control property in a chemical reaction tank, a septic tank, etc. is also excellent.

(4) In addition to the adjustment of the angle at the inclined portion 46, the ratio d / D of the minimum diameter d of each gas-liquid ejection hole 44, 45 and the maximum diameter D of the hollow part is different from right to left. By adjusting the flow rate of right and left, respectively, it is possible to appropriately control the state of the water flow and the stirring state in the reaction vessel or the like.

(Embodiment 11)

The microbubble generator in Embodiment 11 is described below with reference to the drawings.

FIG. 14A is a perspective view of main parts of the microbubble generator in Embodiment 11, FIG. 14B is a side view thereof, and FIG. 14C is a front view thereof.
In Fig. 14, reference numeral 101 denotes a microbubble generator of Embodiment 11 disposed in a liquid phase such as water of a pool, a fresh fish transporter, seawater, or a liquid of a reaction tank, and the shape 102 converges from the rear side to the front end (shell). The container body made of synthetic resin or metal having a hollow portion (103), the gas-liquid introduction tube fixed in a tangential direction to the rear side of the side wall of the container body (102), and (104) in the tangential direction of the container body (102). The gas-liquid introduction hole 105 of the opened gas-liquid introduction tube 103 has an edge portion facing the inside of the container body 102 in accordance with the shape of the ridge portion of the fixed cap portion described later, which is punctured at the front end portion of the container body 102. A gas-liquid ejection hole having a curved shape, 106 is a cap support portion protruding at three places at an equidistant distance from the outer peripheral wall of the gas-liquid ejection hole 105 of the container body 102, 107 is a gas-liquid ejection hole ( A ridge 107a having a shape along the outline of 105 has a gap 105a in the gas-liquid jet hole 105. Is fitted a fixed cap fixing screws or the like to the extended portion (107b), the cap support portion 106 extends radially from the elevated portion (107a).
The extension portion 107b of the fixed cap portion 107 is formed of a flexible material such as a rubber body, whereby the ridge portion 107a moves back and forth in the discharge direction within the allowable flexibility of the extension portion 107b. . This changes the size of the gap 105a. In addition, although the extension part 107b may not be formed with a flexible material, in this case, since the ridge part 107a cannot be moved, the size of the clearance 105a is the diameter of a micro bubble and the gas-liquid introduction hole 104. And the diameter of the gas-liquid ejection hole 105, the shape and volume of the container body 102, the discharge pressure of the pump, and the like.

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The microbubble generator in the eleventh embodiment configured as described above will be described below with reference to the drawings.

FIG. 15 is a sectional view of the principal parts showing the fluid state of the microbubble generator in the eleventh embodiment. FIG.

(V) is negative compression formed by a centripetal force acting on the gas of the gas-liquid mixed fluid which orbits the microbubble generator 101.
When the gas-liquid mixture fluid flows from the gas-liquid introduction hole 104 into the container body 102 at a high pressure (from the tangential direction), the gas-liquid mixture fluid is pivoted along the inner wall surface of the container body 102 to be vigorously mixed with the liquid. It moves to the gas-liquid ejection hole 105 side. At this time, centrifugal force acts on the liquid, centripetal force acts on the gas, and negative compression V is formed by the difference in specific gravity between the liquid and the gas. The negative compression (V) acts to force the fixed cap portion 107 into the container body 102, and the extension portion 107b of the fixed cap portion 107 is formed of a flexible material such as a rubber body. As a result, the ridge 107a moves to cover the gas-liquid jet hole 105, so that the gap 105a is narrowed. On the other hand, since the gas-liquid mixed fluid in the container body 102 is turning along the inner wall surface of the container body 102 as it approaches the gas-liquid ejection hole 105, the inner wall surface of the container body 102 is tightened, and thus turning The speed is increased, the turning speed is maximized in the vicinity of the gas-liquid jet hole 105, and the state is pushed with the ridge 107a of the fixed cap portion 107. As a result, the gas collected in the negative compression V passes while being compressed and sheared between the gas-liquid mixed fluid ejected while turning and the curved surface of the gas-liquid ejection hole 105 side of the ridge 107a, and a large number of units of several micrometers. As a microbubble is ejected from the gas-liquid ejection hole 105 into a liquid phase. Since the negative pressure changes in accordance with the pressure of the gas-liquid mixed fluid, the accessibility of the ridge portion 107a to the gas-liquid jet hole 105 changes according to the negative pressure, and the average particle diameter of the bubbles is adjusted according to the change.

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In the eleventh embodiment, the edge portion of the gas-liquid jetting hole 105 has a shape that is curved toward the inside of the container body 102, but the shape can be implemented even in a planar manner.

According to the microbubble generator of Embodiment 11 comprised as mentioned above, the following effects can be acquired.
(1) Since the fixed cap portion 107 does not move with respect to the turning direction of the gas-liquid mixed fluid (it does not rotate), a shear force is generated between the swirl flow and the ridge portion 107a of the fixed cap portion 107. It is possible to generate bubbles of fine micron units or less.
(2) Since the extension portion 107b of the fixed cap portion 107 is made of a flexible material, the ridge portion 107a is sucked in the direction of the gas-liquid jet hole 105 by the negative compression V, and the gas-liquid jet hole 105 Since the gas blown out from) flows along the ridge | bulb part 107a and is compressed and sheared by the movement of a swirling jet fluid, finer bubbles can be generated.

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(3) Since the shape of the edge portion of the gas-liquid jet hole 105 has a shape that is curved toward the inside of the base body 102 in accordance with the outer shape of the ridge portion 107a, the ridge portion 107a has a negative compression ( In the case where V) is sucked in, the gap 105a becomes narrower, and the gas ejected from the gas-liquid ejection hole 105 is compressed more strongly, so that finer bubbles can be generated.

(4) Because of the large amount of microbubbles in the fluid, the contact area between the gas and the liquid can be increased, and the reaction in the gas-liquid reaction device, the aeration tank or purification device, or the purification in rivers, lakes, dams, etc. Can be promoted. It may also increase the dissolved oxygen in the number of fish farms, fish farms, or freshwater transport vehicles (sea water).

(5) Since the extension part 107b is formed of a flexible material, it corresponds to the discharge pressure of the pump, the diameter of the gas-liquid introduction hole 104 or the gas-liquid injection hole 105, and the shape and volume of the container body 102. Since the size of the gap 105a also changes (in response to the suction force of the negative compression V), the versatility is excellent.

(6) Only by adjusting the pressure of the gas-liquid mixed fluid, the average particle diameter of the bubbles can be adjusted.
(7) Since the external liquid is divided by the fixed cap part, the formation of the negative pressure liquid is suppressed to the minimum, the ejection swirl resistance in the container body is reduced, and the flow of the water flow is accelerated, so that fine bubbles can be obtained.

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(Twelfth Embodiment)

The microbubble generator in Embodiment 12 is described below with reference to the drawings.                 

FIG. 16A is a perspective view of the microbubble generator in the twelfth embodiment, FIG. 16B is a recessed front view thereof, and FIG. 16C is a recessed side view thereof.

In Fig. 16, reference numeral 106 denotes a cap support part, 107 a fixed cap part, 107a is a raised part, and 107b is an extended part. do.

Reference numeral 121 denotes a microbubble generator according to Embodiment 12, which is disposed in a liquid phase such as water of a pool or fresh fish, seawater, or a liquid of a reaction tank, and a container having an egg-shaped hollow portion that converges from an intermediate portion toward both ends. The main body 123 is a gas-liquid introduction tube fixed in a tangential direction to the middle of the container body 122, and 124 is a gas-liquid introduction tube 123 tangentially opened to the middle of the container body 122. The gas-liquid introduction hole 125 is a gap between the gas-liquid ejection hole disposed at both ends of the container body 122 and 125a is a gap between the curved surface of the ridge 107a and the edge of the gas-liquid ejection hole 125.

The microbubble generator 121 of the twelfth embodiment is different from the microbubble generator of the first embodiment in that the hollow portion of the container body 122 is formed in an egg shape, and the gas-liquid ejection holes 125 at both ends of the container body 122 are formed. ) Is a point where the fixing cap 107 is attached.

The microbubble generator in the twelfth embodiment configured as described above will be described with reference to the accompanying drawings.

17 is a sectional view showing the principal parts of the fluid state of the microbubble generator in the twelfth embodiment.

(W) is negative compression formed by a centripetal force acting on the gas of the gas-liquid mixed fluid which orbits the microbubble generator 121.

When the high-pressure gas-liquid mixture fluid is introduced into the container body 122 from the gas-liquid introduction hole 124 (from the tangential direction), the gas-liquid mixture fluid is pivoted along the inner wall surface of the container body 122 and mixed vigorously, Each of them moves toward the gas-liquid ejection hole 125 which is perforated at both ends of the container body 122. At this time, due to the difference in specific gravity between the liquid and the gas, centrifugal force acts on the liquid, and centripetal force acts on the gas, thereby forming a negative compression (W). The negative compression (W) acts to force the ridge portion 107a of the fixed cap portion 107 at both ends into the container body 122, and the extension portion 107b of the fixed cap portion 107 is a flexible material. Since the raised portion 107a moves to cover the gas-liquid jet hole 125, the gap 125a is narrowed. On the other hand, as the gas-liquid mixed fluid in the container body 122 turns along the inner wall surface of the container body 122 and approaches the gas-liquid ejection hole 125, the turning speed is increased, and the turning speed is near the gas-liquid ejection hole 125. Becomes the maximum, and it is in the state pushing with the ridge | bulb part 107a of the fixed cap part 107. As a result, the gas collected in the negative compression W passes while being compressed and sheared between the curved surface of the ridge portion 107a on the gas-liquid ejection hole 125 side while being spun while ejecting, and as a large amount of fine bubbles. It is ejected into the liquid phase from the gas-liquid ejection hole 125 which is punctured at both ends of the container body 122.

According to the microbubble generator of the twelfth embodiment configured as described above, in addition to the action of the eleventh embodiment, the following action can be obtained.

(1) Since the gas-liquid ejection hole 125 is perforated in both sides of the container body 122 in the container body 122 of the microbubble generator 121, the large amount of fine Bubbles can be ejected widely from both sides of the microbubble generator 121.

(Embodiment 13)

The microbubble generator in Embodiment 13 will be described with reference to the drawings below.

18A is a perspective view of the microbubble generator in Embodiment 13, FIG. 18B is a front view thereof, and FIG. 18C is a side view thereof.

In Fig. 18, reference numeral 106 denotes a cap support portion, 122 a container body, 123 a gas-liquid introduction tube, 124 a gas-liquid introduction hole, and 125 a gas-liquid ejection hole, which are the same as those in the twelfth embodiment. The same reference numerals are omitted, and description thereof is omitted.

Reference numeral 131 denotes a microbubble generator in the thirteenth embodiment, which is disposed in a liquid such as water, seawater of a pool or a fresh fish transporter, a liquid of a reaction tank, and 132, a case portion having a circular pore portion 132c in the center thereof. A standing frame 132b extending around the case portion 132a by facing 132a with each gas-liquid ejection hole 125 is a case-shaped frame disposed at each cap support portion 106. The case type frame 132 may be arrange | positioned by fixing the edge part of the standing part 132b directly to the container main body 122, without arrange | positioning the cap support part 106. FIG. 133 is one end side is inserted at a distance to the pore portion 132c of the case portion 132a and the other end is inserted at a distance to the gas-liquid ejection hole 125, the case portion 132a and the gas-liquid ejection hole 125 It is a ball-shaped cap part which is arrange | positioned by the moving rotational material between or fixed to the case part 132a, and is arrange | positioned. As the cap 133 moves, the gap 125b between the cap 133 and the gas-liquid ejection hole 125 changes. The cap portion 133 is lightweight, such as made of a synthetic resin, a synthetic rubber, or an aluminum alloy, and can be used to withstand the pressure of the ejected fluid or the negative compression.

The microbubble generator in the thirteenth embodiment configured as described above will be described with reference to the accompanying drawings.

19 is a principal part front state diagram showing a state of the fluid of the microbubble generator in the thirteenth embodiment;

X is a negative compression formed by the centripetal force acting on the gas of the gas-liquid mixed fluid which orbits inside the microbubble generator 131.

The operation until the gas-liquid mixed fluid reaches the gas-liquid ejection hole 125 while turning and flowing from the gas-liquid introduction hole 124 into the container body 122 is the same as that in the embodiment 12, and thus the description thereof is omitted.

When the negative compression (X) is formed by the gas-liquid mixing fluid that rotates inside the container body (122), a force is applied to attract the ball-shaped cap portion (133) into the container body (122) by the negative compression (X). Since the cap part 133 is arrange | positioned between the case part 132a and the gas-liquid jet hole 125 as a moving material, the cap part 133 moves to the gas-liquid jet hole 125 side, and the clearance 125b becomes narrow.

When the ball-shaped cap portion 133 is fixed to the case portion 132a and disposed, the gap between the cap portion 133 and the gas-liquid ejection hole 125 does not change, so that stable water flow can be discharged.

In addition, the cap portion 133 is rotated by the gas-liquid mixed fluid ejected from the gas-liquid ejection hole 125 while turning. Meanwhile, as the gas-liquid mixed fluid in the container body 122 approaches the gas-liquid ejection hole 125 while turning along the inner wall of the container body 122, the turning speed is increased, and the rotational speed near the gas-liquid ejection hole 125 is increased. Is maximized and is in a state of being pushed together with the cap portion 133. As a result, the gas collected in the negative compression (X) passes while being compressed and sheared between the rotating gas-liquid mixed fluid and the curved surface of the rotating cap portion 133, and the container body 122 is formed as a large amount of fine bubbles. It is ejected into the liquid phase from the gas-liquid ejection hole 125 punched at both ends. The negative pressure of the negative compression (X) fluctuates in accordance with the pressure of the gas-liquid mixed fluid, and the cap part 133 may be moved closer or farther toward the gas-liquid jet hole 125 in accordance with the fluctuation, thereby adjusting the particle diameter of the bubble.

By fixing the gap between the cap portion 133 and the gas-liquid ejection hole 125 to an appropriate value, bubbles of a predetermined particle diameter may be ejected to maintain an appropriate state, thereby stably operating the microbubble generator 131. .

According to the microbubble generator of Embodiment 13 comprised as mentioned above, the following effects can be acquired.

(1) Since the cap part 133 is arranged to move and rotate freely between the gas-liquid jet hole 125 and the case part 132a, the cap part 133 is the gas-liquid jet hole 125 by the negative compression X. The gap 125b is narrowed by moving in the direction of?), And the gas ejected from the gas-liquid ejection hole 125 is compressed and sheared by the cap portion 133 to generate finer bubbles.

(2) When the gas-liquid mixed fluid flows into the container body 122, the cap part 133 is held at a predetermined position by the suction force of the negative compression X and the force in the ejecting direction of the gas-liquid mixed fluid ejected. There is no contact with the portion 132a or the gas-liquid ejection hole 125 at all, and it is difficult to wear and has excellent durability.

(3) Since the gas-liquid ejection hole 125 is punctured at both sides of the container body 122 in the container body 122 of the microbubble generator 131, the gas-liquid introduction hole 124 has a large amount of fine particles. The fluid including bubbles can be ejected widely from both sides of the microbubble generator 131.

(4) Since a large amount of microbubbles can be generated, the contact area between the gas and the liquid can be increased, and the reaction in the gas-liquid reaction device, and the purification in the aeration tank or purifier can be promoted. It may also increase the dissolved oxygen in the number of fish farms, fish farms, or freshwater transport vehicles (sea water).

(5) The average particle diameter of bubbles can be adjusted only by adjusting the pressure of the gas-liquid mixed fluid.

(Embodiment 14 and Embodiment 15)

The microbubble generator in Embodiment 14 and the microbubble generator in Embodiment 15 having the same will be described below with reference to the drawings.

20A is a perspective view of the multistage microbubble generator in Embodiment 14, FIG. 20B is a rear view thereof, and FIG. 21 is a configuration diagram of the multistage microbubble generator according to the 15th embodiment.

In Fig. 20, reference numeral 201 denotes a multi-stage microbubble generator in the fourteenth embodiment, 202 denotes a container main body (front nozzle) having a substantially conical hollow portion that converges from the rear side toward the front end. The gas-liquid ejection hole (tip ejection hole) which is punctured at the front end (normal part) of the silver container body 202, 204a is the gas-liquid introduction hole (the tip liquid introduction which opened tangentially to the rear side of the container body 202). Balls 204 and 204b are the gas-liquid introduction pipes (front liquid introduction pipes) into which the liquid or gas-liquid mixed fluid disposed in communication with the gas-liquid introduction holes 204a is introduced, and 205, all of which are rear parts of the container body 202. The inner nozzle portion opened in a shape converging toward the front end portion from the rear side disposed inside the side, 206 is a secondary jet hole opened in the front end portion of the inner nozzle portion 205, and 206a is an inner nozzle portion ( The internal hollow portion, 207a, formed in a cylindrical shape behind 205, is a gas-liquid introduction hole 204 in the internal hollow portion 206a. The secondary liquid introduction hole opened in the tangential direction in the same direction as a), 207b is the secondary liquid introduction pipe disposed in communication with the secondary liquid introduction hole 207a, and 208 is the rear end of the internal hollow portion 206a. It is a gas absorbing hole (gas absorbing hole) disposed in the inner nozzle portion.

As shown in the drawing, the container body 202 has a swirling flow generating unit having an inner nozzle part 205, an inner hollow part 206a, and a secondary liquid introduction pipe 207b therein, an inner nozzle part, and a gas absorbing hole. 208 is arrange | positioned, and by this, the swirl flow in the hollow part of the container main body 202 accelerates and stirs, and it becomes easy to produce finer bubbles.

Denoted at 209 is the microbubble generating device according to the fifteenth embodiment, 210 is a front end pump having a suction port 210a and a discharge port 210b, and the front end liquid is introduced into the container body 202, and 211 is an upstream side. The tip side discharge pipe connected to the discharge port 210 of the tip pump 210 and the downstream side connected to the gas-liquid introduction pipe 204b, and the downstream side connected to the suction port 210a of the tip pump 210. The tip end suction pipe 213 has one end connected to the inner nozzle part gas suction hole 208 and the other end opened in the air, and 214 has a suction port 214a and a discharge port 214b. The secondary pump for injecting liquid into the inner nozzle portion 205, 215, has a secondary side discharge upstream connected to the discharge port 214b of the secondary pump 214 and downstream connected to the secondary liquid introduction pipe 207b. Tube 216 is a secondary side suction pipe whose downstream side is connected to the inlet 214a of the secondary pump 214, and 217 is a gas flow control valve disposed at a predetermined portion of the gas self-supply pipe 213. The.

The microbubble generator in the fourteenth embodiment configured as described above and the microbubble generator in the fifteenth embodiment provided with the same will be described below with reference to the drawings.

Fig. 22 is a sectional side view of the main portion showing the state of the fluid inside the microbubble generator;

In Fig. 22, reference numeral 201 denotes a microbubble generator, 202 denotes a container body, 203 denotes a gas liquid ejection hole, 204a denotes a tip fluid introduction hole, and 204b denotes a tip fluid introduction pipe, The inner nozzle part 206 is the secondary ejection hole, 207a is the secondary liquid introduction hole, 207b is the secondary liquid introduction pipe, and 208 is the inner nozzle part gas absorption hole, which is the same as that of FIG. Add a code and omit the description.

For convenience of explanation, the liquid sucked by the tip pump is called the tip side liquid, and the liquid sucked by the secondary pump is called the secondary side liquid. As the tip side liquid and the secondary side liquid, ones of the same or different types may be used, and water, a chemical liquid, a reaction liquid, a fuel, and the like are used. As the gas, ozone in the case of water sterilization such as air or pool in the case of a sewage treatment tank, reaction gas (HCN, HCl, SO ₂ , NO _2, etc.) is used in the case of a chemical reaction.

Reference numeral 218 denotes a boundary portion in the gas-liquid jet hole 203 formed by the negative pressure liquid to be introduced into the container body 202 and the tip side liquid and the secondary side liquid ejected out of the container body 202, and (X) denotes the container body. A negative compression is formed by the gas-liquid mixed fluid which orbits 202 and the inner nozzle portion 205.

When the secondary pump 214 is driven, the secondary side liquid passes through the secondary side suction pipe 216, the secondary pump 214, and the secondary side discharge pipe 215, and the inner nozzle part 205 from the secondary liquid introduction pipe 207b. It is continuously introduced into, and moves to the secondary jet hole 206 while turning and converging. At this time, since the centrifugal force acts on the secondary side liquid, and the center of the swirl flow becomes negative pressure, gas is sucked from the inner nozzle part gas absorption hole 208, and the secondary nozzle hole (208) is discharged from the inner nozzle part gas introduction hole 208. A negative compression is formed over 206.

On the other hand, when the tip pump 210 is driven, the tip side liquid passes through the tip side suction pipe 212, the tip pump 210, the tip side discharge pipe 211, and the container body 202 from the tip fluid introduction pipe 204b. ) Is continuously introduced into, and moves to the gas-liquid ejection hole 203 while turning and converging. In addition, a secondary side liquid having the same turning direction as the leading side liquid enters into the container body 202 from the secondary jet hole 206. At this time, since the centrifugal force acts on the secondary side liquid and the tip side liquid in the container body 202 and the negative pressure acts on the center of the swirl flow, the negative compression formed in the inner nozzle part 205 reaches the gas-liquid ejection hole 203. Extending, the negative compression X is formed.

A force that tries to enter the container body 202 from the gas-liquid ejection hole 203 by the negative compression X acts on the liquid near the gas-liquid ejection hole 203 outside the vessel body 202. On the other hand, in the container body 202, as the tip liquid and the secondary liquid become close to the gas-liquid jet hole 203 while mixing and turning, the turning speed is increased and the pressure is increased, near the gas-liquid jet hole 203. The turning speed and pressure are at maximum, and are in a state of pushing with the negative pressure liquid. The tip side liquid and the secondary side liquid flow out from the vicinity of the edge portion of the gas-liquid ejection hole 203 to avoid negative pressure liquid. In addition, the gas collected in the negative compression (X) is sheared at the boundary portion 218 between the negative pressure liquid, the leading liquid and the secondary liquid to form a large amount of fine bubbles and is ejected from the gas-liquid jet hole (203).

According to the microbubble generator of Embodiment 14 configured as mentioned above, and the microbubble generator in Embodiment 15 provided with the same, the following effects can be acquired.

(1) Since the secondary side liquid tries to enter into the container body 202 from the secondary jet hole 206, the tip side liquid and the secondary side liquid can be efficiently mixed.

(2) Since the secondary side liquid enters into the container body 202 from the secondary jet hole 206 while turning, the turning force of the secondary side liquid is added to the turning force of the secondary side liquid, which results in stronger turning flow. This is fine, and fine bubbles can be ejected more widely.

(3) By adjusting the gas flow rate control valve 217, the amount of gas mixed into the liquid can be adjusted, so that the size and amount of the generated microbubbles can be adjusted.

(4) The particle size of the microbubbles can be freely controlled to 100 μm or less only by controlling the flow rate and the rotation speed of the liquid and gas.

(5) Since it is a fine bubble, the surface area of the bubble is extremely large, and air or a reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.                 

(6) Since the gas is sucked in from the internal nozzle gas absorbing hole 208, air in the atmosphere can be automatically supplied to the sewage with high absorption rate, and maintenance is simplified, so that the sewage treatment can be simplified.

(7) The gas self-contained pipe 213 is opened to the atmosphere or connected to a desired absorption or reaction gas (eg, other reactive gas such as CO ₂ , HCl, HCN, SO ₂ , COCl ₂ , fluorine compound gas, etc.). The gas can be absorbed or reacted with the liquid only.

(8) Since it is multi-stage, by supplying the same or plural kinds of liquid and gas to each step, the gas can be absorbed or reacted with the liquid with high efficiency.

(9) The amount of inhalation of the gas can be adjusted simply by adjusting the amount of liquid supplied, which is excellent in workability and labor saving.

(10) Depending on the viscosity, the amount of swirl and the flow rate of the mixed raw liquid, gas can be introduced into the optimum liquid introduction pipe, and the treatment and reaction are excellent in freedom.

(11) Through the pumps 210 and 214, many kinds of liquids and gases can be mixed at once.

(16th Embodiment and 17th Embodiment)

Next, the microbubble generator in Embodiment 16 and the microbubble generator in Embodiment 17 having the same will be described with reference to the drawings.

FIG. 23A is a perspective view of the microbubble generator in Embodiment 16, and FIG. 23B is a rear view thereof.                 

In Fig. 23, reference numeral 202 denotes a container body, 203 denotes a gas-liquid ejection hole, 204a denotes a tip liquid introduction hole, 204 denotes a tip liquid introduction pipe, 205 denotes an inner nozzle portion, and 206 denotes a container body. Secondary ejection holes 207a are secondary liquid introduction holes and 207b are secondary liquid introduction pipes, and since they are the same as those in the fourteenth embodiment, they are denoted by the same reference numerals and description thereof will be omitted.

Numeral 221 denotes a microbubble generator in the sixteenth embodiment.

The difference between the microbubble generator 221 in the sixteenth embodiment and the microbubble generator 201 in the fourteenth embodiment is that there is no inner nozzle part gas absorbing hole 208 at the rear of the inner nozzle part 205. .

24 is a configuration diagram of a microbubble generating device according to the seventeenth embodiment.

In Fig. 24, reference numeral 210 denotes a tip pump, 210a denotes an inlet port, 210b denotes a discharge port, 211 denotes a distal end discharge pipe, 212 denotes a distal end suction pipe, and 214 a secondary pump, and 214a. Is a suction port, 214b is a discharge port, 215 is a secondary side discharge pipe, 216 is a secondary side suction pipe, 217 is a gas flow control valve, and 221 is a microbubble generator in the sixteenth embodiment.

Numeral 222 denotes the microbubble generating device according to the seventeenth embodiment, and 223 is a gas self-contained tube whose one end is connected to the secondary side suction pipe 216 and the other end is opened in air.

The difference between the microbubble generating device of Embodiment 17 and the microbubble generating device of Embodiment 15 is that the gas self-supply pipe 223 is connected to the secondary side suction pipe 216.

The microbubble generator in the sixteenth embodiment configured as described above and the microbubble generator in the embodiment provided with the same will be described below with reference to the drawings.                 

For convenience of explanation, the liquid sucked by the tip pump is referred to as the tip side liquid, and the liquid sucked by the secondary pump is called a secondary side liquid.

When the secondary pump 214 is driven, the secondary side liquid is sucked from the suction port 214a into the secondary pump 214 from the secondary side suction pipe 216. At this time, in the connection part of the secondary side suction pipe 216 with the gas self-sufficiency pipe 223, gas is sucked from the gas self-supply pipe 223 to the secondary side suction pipe 216 as an accompanying flow of a secondary side liquid, The liquid becomes a gas-liquid mixed fluid. The secondary liquid in which the bubbles are mixed is discharged from the discharge port 214b by the impeller (not shown) in the secondary pump 214 and is introduced into the inner nozzle part 205 while the bubbles are diffused.

Since operations in the container body 202 and the inner nozzle part 205 are the same as those in the fourteenth embodiment, description thereof is omitted.

According to the microbubble generator of Embodiment 16 comprised as mentioned above, and the microbubble generating apparatus in Embodiment 17 provided with the same, in addition to the action of (1)-(10) of Embodiment 14, 15, You can get it.

(1) Since the gas self-sufficiency pipe 223 is connected to the secondary side suction pipe 216, and there are no pores for blowing gas into the inner nozzle part 205, the microbubble generator 201 is a chemical reaction tank or sewage. When used in a treatment tank or the like, residual pressure remains in the device when the front end pump 210 or the secondary pump 214 is turned on and off, and even if the fluid flows back, it does not cause clogging due to reactants and dirt.

(2) Since the gas mixed in the secondary side liquid is diffused by the impeller in the secondary pump 214, finer bubbles can be generated.                 

(Embodiment 18 and Embodiment 19)

The microbubble generator in Embodiment 18 and the microbubble generator in Embodiment 19 having the same will be described below with reference to the drawings.

25A is a perspective view of the microbubble generator in Embodiment 18, and FIG. 25B is a rear view thereof.

In Fig. 25, reference numeral 202 denotes a container body, 203 denotes a gas-liquid ejection hole, 204a denotes a tip fluid introduction hole, 204b denotes a tip fluid introduction pipe, 205 denotes an internal nozzle part, and 206 denotes a container body. Secondary blowing holes 208 are gas absorbing holes of the inner nozzle part, and since they are the same as those in the fourteenth embodiment, the same reference numerals are assigned and the description thereof is omitted.

231 is a multi-stage microbubble generator in Embodiment 18, and 232b is a secondary liquid introduction hole 232a opened in a tangential direction opposite to the gas-liquid introduction pipe 204b on the rear side of the inner nozzle part 205. It is a secondary liquid introduction pipe arranged in communication with (see FIG. 27).

The difference between the microbubble generator 231 in Embodiment 18 and the microbubble generator 201 in Embodiment 14 is that the secondary liquid introduction hole 232a of the secondary liquid introduction tube 232b has a tip fluid introduction tube 204b. It is a point opened in the reverse direction rather than in the same direction as the front end fluid introduction hole 204a.

26 is a configuration diagram of a microbubble generating device according to the nineteenth embodiment.

In Fig. 26, reference numeral 202 denotes a container body, 203 denotes a gas-liquid ejection hole, 204b denotes a tip liquid introduction pipe, 205 denotes an inner nozzle portion, and 208 denotes an internal nozzle portion gas absorbing hole. ) Is the tip pump, 210a is the suction port, 210b is the discharge port, 211 is the tip side discharge pipe, 212 is the tip side suction pipe, 213 is the gas self-contained pipe, and 214 is the secondary pump, 214a is a suction port, 214b is a discharge port, 215 is a secondary side discharge pipe, 216 is a secondary side suction pipe, 217 is a gas flow control valve, and 231 is a multistage microbubble in Embodiment 18. The generator 232b is a secondary liquid introduction pipe, and since these are the same as those in Fig. 21 or 25, the same reference numerals are used and the description thereof is omitted.

Denoted at 233 is the microbubble generating device according to the nineteenth embodiment.

The microbubble generator in the eighteenth embodiment configured as described above and the microbubble generator in the nineteenth embodiment provided with the same will be described below with reference to the drawings.

Fig. 27 is a side sectional view of a main portion showing the state of the fluid inside the microbubble generator;

In Fig. 27, reference numeral 202 denotes a container body, 203 denotes a gas-liquid ejection hole, 204a denotes a tip fluid introduction hole, 204b denotes a tip fluid introduction pipe, 205 denotes an internal nozzle part, and 206 denotes a container body. Secondary ejection hole, (208) is the internal nozzle portion gas absorption hole, (231) is a multi-stage microbubble generator, (232a) is the secondary liquid introduction hole, (232b) is the secondary liquid introduction pipe, these are the same as FIG. Therefore, the same reference numerals are used and the description thereof is omitted.

Y is a negative compression formed by the gas-liquid mixed fluid which orbits inside the inner nozzle part 205.

When the secondary pump 214 is driven, the secondary side liquid passes through the secondary side suction pipe 216, the secondary pump 214, and the secondary side discharge pipe 215, and the inner nozzle part 205 from the secondary liquid introduction pipe 232b. It is continuously introduced into the inside, and moves to the secondary ejection hole 206 while turning. At this time, a centrifugal force is applied to the secondary side liquid, and a negative pressure is applied to the center of the swirl flow, so that gas is sucked from the internal nozzle part gas absorption hole 208, thereby forming a negative compression (Y).

On the other hand, when the tip pump 210 is driven, the tip side liquid passes through the tip side suction pipe 212, the tip pump 210, the tip side discharge pipe 211, and the container body 202 from the tip fluid introduction pipe 204b. Flows into the gas-liquid ejection hole 203 while turning in the reverse direction of the secondary liquid. Also, from the secondary jet hole 206, the secondary side liquid whose direction of rotation is opposite to the tip side liquid enters into the container body 202.

A force that tries to enter the inner nozzle part 205 from the secondary jet hole 206 by the negative compression Y in the inner nozzle part 205 acts on the tip side liquid near the secondary jet hole 206. On the other hand, in the inner nozzle part 205, as the secondary liquid closes to the secondary ejection hole 206 while turning, the rotational speed increases and the pressure increases, so that the rotational speed and pressure in the vicinity of the secondary ejection hole 206 are increased. Becomes the maximum, and it pushes with a negative pressure liquid mutually. The secondary side liquid tries to avoid the negative pressure liquid and flows out from the vicinity of the edge portion of the secondary jet hole 206. In addition, the gas collected in the negative compression (Y) passes through the gap between the negative pressure liquid and the secondary side liquid as a compressor body, and becomes a large amount of fine bubbles together with the secondary side liquid into the container body 202 to discharge the secondary nozzle of the inner nozzle part 205. After being ejected from the ball 206 and mixed with the tip side liquid, it is ejected from the gas-liquid ejection hole 203 of the container body 202.

According to the microbubble generator of Embodiment 18 comprised as mentioned above, and the microbubble generator of Embodiment 19 provided with the same, the following effects can be acquired.

(1) Since the turning direction of the secondary side liquid is inverse to the turning direction of the tip side liquid, the gas converged on the negative pressure axis Y flows into the microbubble at the moment when it enters into the container body 202 from the secondary jet hole 206. The secondary side liquid and the microbubble are efficiently mixed with the tip side liquid to be swiveled, and are ejected from the gas-liquid jet hole 203. Therefore, even if the container main body 202 and the inner nozzle part 205 are arrange | positioned in air, the liquid containing a large amount of microbubbles can be ejected.

(2) By controlling the gas flow control valve 217, the amount of gas mixed into the secondary side liquid can be adjusted, and the size and amount of the generated microbubbles can be adjusted.

(3) The particle size of the microbubble is several micrometers to 100 micrometers, and can be freely controlled only by adjusting the inflow amount or revolution speed of liquid or gas.

(4) Since it is a fine bubble, the surface area of the bubble is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.

(5) Simply opening the gas supply pipe 213 to the atmosphere or connecting to the desired absorption or reaction gas (for example, other reaction gas such as CO ₂ , HCl, HCN, SO ₂ , COCl ₂ , or fluorine compound gas). The gas may be absorbed or reacted with the liquid.

(6) Since it is multi-stage, by supplying the same or different kinds of liquids and gases to each step, the gas can be absorbed or reacted in the liquid with high efficiency.

(7) The amount of inhalation of the gas can be adjusted simply by adjusting the amount of liquid supplied, and the workability and labor saving are excellent.

(8) The gas can be introduced into a suitable liquid introduction tube according to the viscosity, the amount of revolution and the flow rate of the mixed raw liquid, and the treatment and the reaction are excellent in freedom.

(20th and 21st Embodiments)

Next, the microbubble generator in Embodiment 20 and the microbubble generator in Embodiment 21 having the same will be described with reference to the drawings.

FIG. 28A is a perspective view of the microbubble generator in Embodiment 20, and FIG. 28B is a rear view thereof.

In Fig. 28, reference numeral 202 denotes a container body, 203 denotes a gas-liquid ejection hole, 204a denotes a tip fluid introduction hole, 204b denotes a tip fluid introduction pipe, 205 denotes an internal nozzle part, and 206 denotes a container body. Secondary ejection holes 232a are secondary liquid introduction holes and 232b are secondary liquid introduction pipes, and since they are the same as those in the eighteenth embodiment, the same reference numerals are omitted and the description thereof is omitted.

Numeral 241 denotes a microbubble generator in Embodiment 20.

The difference between the microbubble generator 241 in Embodiment 20 and the microbubble generator 231 in Embodiment 18 is that there is no inner nozzle part gas absorbing hole 208 at the rear of the inner nozzle part 205.

29 is a configuration diagram of the microbubble generating device according to the twenty-first embodiment.

In Fig. 29, reference numeral 202 denotes a container body, 203 denotes a gas-liquid ejection hole, 204b denotes a tip fluid introduction pipe, 205 denotes an inner nozzle portion, 232b denotes a secondary liquid introduction pipe, and 210 denotes a container body. The tip pump, 210a is the inlet, 210b is the discharge port, 211 is the tip side discharge pipe, 212 is the tip side suction pipe, 214 is the secondary pump, 214a is the suction port, and 214b is the discharge port , 215 is a secondary side discharge pipe, 216 is a secondary side suction pipe, and 217 is a gas flow rate control valve. Since these are the same as those in the nineteenth embodiment, the same reference numerals are omitted and the description thereof is omitted.

Denoted at 242 is the microbubble generating device 243, which is a gas self-contained pipe whose one end is connected to the secondary side suction pipe 216 and the other end is opened in air.

The microbubble generator 242 in Embodiment 21 differs from the microbubble generator 233 in Embodiment 19 in that there is no inner nozzle part gas absorbing hole 208 at the rear of the inner nozzle part 205, The gas self-supply pipe 243 is connected to the secondary side suction pipe 216.

A microbubble generator in Embodiment 20 configured as described above and a microbubble generator in Embodiment 21 having the same will be described below with reference to the drawings.

For convenience of explanation, the liquid sucked by the tip pump is called the tip side liquid, and the liquid sucked by the secondary pump is called the secondary side liquid.

When the secondary pump 214 is driven, the secondary liquid is sucked into the secondary pump 214 from the secondary side suction pipe 216 via the suction port 214a. At this time, in the connection portion of the secondary side suction pipe 216 with the gas self-supply pipe 243, the gas is sucked from the gas self-supply pipe 243 to the secondary side suction pipe 216 as an accompanying flow of the secondary side liquid, and the secondary side The liquid is a gas mixed fluid. The secondary liquid in which the bubbles are mixed is discharged from the discharge port 214b by the impeller (not shown) in the secondary pump 214 and is introduced into the inner nozzle part while the bubbles are diffused.

Since the fluid operation in the container body 202 and the inner nozzle part 205 is the same as that of Embodiment 18 and 19, the description is abbreviate | omitted.

According to the microbubble generator of Embodiment 20 comprised as mentioned above, and the microbubble generator of Embodiment 21 provided with the same, in addition to the operation | movement obtained by Embodiment 18 and Embodiment 19, the following effects can be acquired.

(1) Since the gas self-sufficiency pipe 243 is connected to the secondary side suction pipe 216, and the internal nozzle part 205 does not have micropores for blowing gas, the microbubble generator 241 is subjected to chemical reaction tank or sewage treatment. When used in a tank or the like, the residual pressure remains in the apparatus when the secondary pump 214 is turned on and off, so that even if the fluid flows backward, clogging caused by the reactants or dirt is not caused.

(2) Since the gas mixed in the secondary side liquid is diffused by the impeller in the secondary pump 214, it is possible to generate a large amount of fine bubbles.

(22nd Embodiment and 23rd Embodiment)

The microbubble generator in Embodiment 22 and the microbubble generator in Embodiment 23 having the same will be described below with reference to the drawings.

30A is a perspective view of a multistage microbubble generator in Embodiment 22, and FIG. 30B is a rear view thereof.

For convenience of explanation, the liquid sucked by the tip pump is called the tip side liquid, the liquid sucked by the secondary pump is called the secondary side liquid, and the liquid sucked into the tertiary pump is called the tertiary side liquid.

In Fig. 30, reference numeral 251 denotes a microbubble generator in Embodiment 22, reference numeral 252 denotes a container body having an almost conical shape converging toward the front end from the rear side, and reference numeral 253 denotes a front end of the container body 252. The gas-liquid ejection hole punctured in the (normal part), 254b is a gas-liquid introduction tube disposed in communication with the gas-liquid introduction hole 254a opened in a tangential direction to the rear side of the container body 252, and 255 is the entire side. The inner nozzle portion having a substantially conical shape converging toward the front end portion from the rear side disposed inside the rear side of the container body 252, and 256 are secondary ejection holes opened to the front end portion of the inner nozzle portion 255. , 257b is a secondary liquid introduction pipe disposed in communication with the secondary liquid introduction hole 257a (not shown) opened in the tangential direction in the opposite direction to the gas-liquid introduction hole 254a on the rear side of the inner nozzle part 255. , 258 is the front side is disposed inside the rear side of the inner nozzle portion 255 and sheared from the rear side. The tertiary nozzle having an almost conical shape converging toward 259 is a tertiary ejection hole punctured at the front end of the tertiary nozzle 258, and 260b is a secondary liquid introduction hole at the rear side of the tertiary nozzle 258. The tertiary liquid introduction pipe disposed in communication with the tertiary liquid introduction hole 260a opened in the tangential direction in the same direction as 257a) is a gas absorbing hole (inner nozzle) which is punctured at the rear end of the tertiary nozzle 258. Secondary gas absorption hole).

31 is a configuration diagram of the microbubble generating device according to the twenty-third embodiment.

In FIG. 31, reference numeral 262 denotes a front end pump having a suction port 262a and an outlet port 262b, and the front end liquid is introduced into the container body 252, and the upper end side of the front end pump 263 is an outlet port of the front end pump 262. 265b is the tip side discharge pipe connected to the gas-liquid introduction hole 254a downstream, and 264 is the tip side suction pipe connected to the inlet port 262a of the tip pump 262 downstream. A secondary pump having a suction port 264a and a discharge port 265b and for introducing the secondary liquid into the internal nozzle part 255, the upstream side is connected to the discharge port 265b of the secondary pump 265, and the downstream side thereof. The secondary side discharge pipe connected to the secondary liquid introduction hole 257a, 267 is the secondary side suction pipe connected downstream to the suction port 265a of the secondary pump 265, and the 268 is the suction port 268a and the discharge port. A tertiary pump having a 268b and introducing the tertiary liquid into the tertiary nozzle 258, the upstream side of which is connected to the discharge port 268b of the tertiary pump 268 and the downstream side of the secondary liquid introduction hole 260a; Fold in Tertiary side discharge pipe, 270 is the downstream side is connected to the inlet 268a of the tertiary pump 268, the tertiary side suction pipe, 271 one end is connected to the gas absorption hole 261 and the other end is opened in the air The gas flow control valve 217 is provided with a gas flow rate control valve 217.

The microbubble generator in the twenty-second embodiment configured as described above and the microbubble generator in the twenty-third embodiment having the same will be described below with reference to the drawings.

32 is a sectional view showing the main parts of a fluid state inside the microbubble generator;

In FIG. 32, Z is a negative compression formed by the swirl flow in the internal nozzle part 255 and the tertiary nozzle 258. In FIG.

When the tertiary pump 268 is driven, the tertiary side liquid passes through the tertiary side suction pipe 270, the tertiary pump 268, and the tertiary side discharge pipe 269, from the tertiary liquid introduction pipe 260b into the tertiary nozzle 258. It flows in continuously and moves to the tertiary jet hole 259 side while turning. At this time, since the centrifugal force acts on the tertiary side liquid and negative pressure acts on the center of the swirl flow, gas is sucked from the gas absorption hole 261 to form negative compression.

In addition, when the secondary pump 265 is driven, the secondary side liquid passes through the secondary side suction pipe 267, the secondary pump 265, and the secondary side discharge pipe 266, and the internal nozzle part 255 from the secondary liquid introduction pipe 257b. ) Is continuously introduced into, and closes to the secondary jet hole 256 while turning.

In the inner nozzle part 255, the tertiary side liquid is mixed with the secondary side liquid while turning. At this time, since the secondary side liquid is turning in the same direction as the tertiary side liquid, the negative compression extends to the secondary ejection hole 256 to form the negative compression Z.

On the other hand, when the tip pump 262 is driven, the tip side liquid passes through the tip side suction pipe 264, the tip pump 262, the tip side discharge pipe 263, and the container body 252 from the gas-liquid introduction pipe 254b. Continuously flowed in, the tip side liquid moves to the gas-liquid jet hole 253 side while turning in reverse direction with the secondary side liquid and the secondary side liquid.

In addition, a fluid including a secondary side liquid, a tertiary side liquid, and microbubbles enters into the container body 252 from the secondary jet hole 256.

The tip side liquid near the secondary jet hole 256 tries to enter into the internal nozzle part 255 from the secondary jet hole 256 by the negative compression Z in the internal nozzle part 255 and the tertiary nozzle 258. Force is at work On the other hand, in the inner nozzle part 255, as the secondary side liquid and the tertiary side liquid turn to approach the secondary ejection hole 256, the turning speed increases and the pressure increases, so that the vicinity of the secondary ejection hole 256 is increased. In this case, the turning speed and pressure are maximized, and they are pushed together with the negative pressure liquid. The secondary side liquid and the tertiary side liquid flow out from the vicinity of the edge portion of the secondary jet hole 256 to avoid negative pressure liquid. In addition, the compressed liquid collected in the negative compression (Z) passes through the gaps of the mixed liquid of the negative pressure liquid, the secondary side liquid and the tertiary side liquid under shear, and the mixed liquid of the secondary side liquid and the tertiary side liquid into the container body 252. Together with a large amount of fine bubbles are ejected from the secondary jet hole (256) of the inner nozzle portion 255 and mixed with the tip side liquid, and then ejected from the gas-liquid jet hole (253) of the container body 252.

According to the microbubble generator of Embodiment 22 configured as mentioned above, and the microbubble generator of Embodiment 23 provided with the same, the following effects can be acquired.

(1) Since the turning directions of the secondary and tertiary liquids are opposite to the turning directions of the tip side liquid, when the gas converged in the negative compression Z enters the container body 252 from the secondary jet hole 256 The secondary side liquid, the tertiary side liquid, and the microbubble are efficiently mixed with the leading end side liquid to be swollen, and ejected from the gas-liquid jetting hole 253. Thereby, even if the container main body 252, the internal nozzle part 255, and the tertiary nozzle 258 are arrange | positioned in air, the liquid containing a large amount of microbubbles can be ejected.

(2) By adjusting the gas flow control valve 217, the amount of gas mixed into the tertiary liquid can be adjusted, so that the size and amount of the microbubbles generated can be adjusted.

(3) The particle size of the microbubbles is several micrometers to 100 micrometers, and can be freely controlled only by adjusting the inflow amount and the revolution speed of liquid or gas.

(4) Since it is a fine bubble, the surface area of the bubble is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.

(5) The gas self-contained pipe 271 is opened to the atmosphere, and only connected to the target absorption or reaction gas (for example, other reaction gas such as CO ₂ , HCl, HCN, SO ₂ , COCl ₂ , or fluorine compound gas). The gas may be absorbed or reacted with the liquid.

(6) Since it is multi-stage, by supplying the same or different kinds of liquids and gases to each step, the gas can be absorbed or reacted in the liquid with high efficiency.

(7) The amount of inhalation of the gas can be adjusted simply by adjusting the amount of liquid supplied, and the workability and labor saving are excellent.

(8) A gas can be introduced into a suitable liquid introduction pipe according to the viscosity, the amount of revolution and the flow rate of the supplied raw liquid, and the treatment and the reaction are excellent in freedom.

(9) More liquids or gases can be mixed by injecting separate liquids or gases into the container body 252, the inner nozzle portion 255, and the tertiary nozzle 258.

(10) The mixed fuel can be produced at a high oxygen rate in a single treatment, thereby improving the combustion efficiency of the boiler.

(11) Waste gases and reaction gases having different kinds of factories, such as chemical plants, can be supplied to the neutralizing liquid, the washing liquid, and the reaction liquid at the same time.

(12) Ozone gas can be supplied from aquaculture farms, followed by air to achieve high sterilization and high oxygen content.

(13) The pumps 262, 265, and 268 can be selected only by the type of liquid, and are excellent in versatility.

In Embodiment 23, although the gas absorption hole 261 was arrange | positioned at the rear part of the tertiary nozzle 258, and the gas self-sufficiency pipe 271 was connected, the gas self-sufficiency pipe 271 was connected to the secondary side suction pipe 267 and / or tertiary. By connecting to the side suction pipe 270, the following actions can be obtained in addition to the above actions (1) to (13).                 

(14) Since the third nozzle 258 has no pores for blowing gas, residual pressure remains in the device when the tip pump 262, the secondary pump 265, and the tertiary pump 268 are turned on and off, and liquid Reflux does not cause blockage.

(15) Since the gas mixed in the secondary side and / or tertiary side liquid is diffused by the impeller in the secondary pump 265 and / or the tertiary pump 268, more fine bubbles can be generated.

Embodiment 24

The microbubble generator in Embodiment 24 will be described with reference to the drawings.

33A is a perspective view of the main portion of the microbubble generator in the twenty-fourth embodiment, and FIG. 33B is a sectional side view of the main portion thereof.

In Fig. 33, reference numeral 300 denotes the microbubble generator of Embodiment 24, reference numeral 301 denotes a container main body having a hollow portion formed in substantially rotational symmetry, and reference numeral 302 tangentially opened on a circumferential wall of the container main body 301. The gas-liquid introduction pipe connected to the gas-liquid introduction hole 302a, 303 is a gas-liquid ejection hole installed to open in the direction of the rotational symmetry axis of the hollow portion, 304 is a tank portion disposed on the rear wall of the container body 301, 305 Is a tank gas absorbing hole formed through the wall portion between the tank portion 304 and the container body 301 so that the negative compression slightly overlaps, 306 is a tank gas introduction pipe installed at the tank portion 304, 307 ) Is a gas-liquid ejection guide portion connected to the gas-liquid ejection hole 303, 308 is an outlet portion of the water flow which is opened at the periphery of the gas-liquid ejection guide portion 307, and 309 is a liquid flowing out of the outlet 308. It is a scattering prevention unit to prevent the scattering.

The microbubble generator 300 of Embodiment 24 is significantly different from the microbubble generator 1 of Embodiment 1 in that the container body 301 has a tank portion 304 and a tank subgas introduction hole 306. to be. When the microbubble generator 300 is not used as a massager that jets water flow to the surface to massage, the configuration of the gas-liquid jetting guide part 307 can be omitted.

The tank portion 304 is a liquid storage portion disposed to cover the rear wall of the container body 301 and formed in a cylindrical shape or the like, and communicates with the hollow portion 301a through the tank portion gas absorption hole 305 formed on the rear wall. . The tank portion 304 is formed to have substantially the same diameter as the container body 301 and has a volume of about 1/20 to 1/4 of the volume of the container body 301. The tank portion 304 is adhered to the rear wall of the container body 301 through an adhesive or the like, but may be integrally molded with the container body or screw-bonded through a screw portion or the like.

The tank gas introduction pipe 306 is formed on the upper portion of the tank 304, the pore diameter is about 2 mm to 5 mm, and can suck outside air through the water stored in the tank 304. have.

The microbubble generator 300 according to the twenty-fourth embodiment configured as described above will be described with reference to the accompanying drawings.

34 is an explanatory diagram showing a state of use of the microbubble generator of the twenty-fourth embodiment;

In FIG. 34, X is a gas axis formed in the hollow part 301a of the container main body 301 from the tank part gas absorption hole 305 to the gas-liquid ejection hole 303, and the surface H. As shown in FIG.

First, the gas-liquid introduction pipe 302 of the microbubble generator 300 is connected to the tap of the tap or the discharge port of the pump, and from the gas-liquid introduction pipe 302 to the hollow portion 301a of the container body 301 from the tangential direction. Introduce the liquid.                 

The liquid introduced into the hollow portion 301a is moved from the gas-liquid ejection hole 303 to the gas-liquid ejection guide portion 307 while turning along the wall surface of the hollow portion 301a, and the inner wall surface of the gas-liquid ejection guide portion 307 is moved. While colliding with the surface H, it collides with the surface H and flows out of the microbubble generator 300 from the outlet portion 308 through the inner wall surface of the scattering prevention portion 309.

 At this time, the liquid rotates along the circumferential wall of the container body 301 and centrifugal force acts, and the central portion of the swirl flow becomes low pressure, so that the gas is discharged from the tank gas absorbing hole 305 disposed almost at the center of the rear wall. Is continuously sucked to form the gas shaft X in the hollow portion 301a, and the front surface H of the gas-liquid ejection guide portion 307 is sucked.

The gas collected in the gas shaft X takes over between its tip and the surface H to form fine bubbles, and diffuses out of the outlet portion 308 along with the swirling flow along the surface H. As shown in FIG. Here, the hollow portion 301a of the microbubble generator 300 is not in direct communication with the outside air, but is in communication with the tank side hollow portion 304a of the tank portion 304, and the tank side hollow portion 304a is a tank. Since the air is communicated with the outside air through the sub-gas introduction pipe 306, the suction resistance is large, so that the flow rate can be adjusted.

In addition, by storing the liquid in the tank side hollow portion 304a, the suction resistance of the tank gas absorbing hole 305 can be further increased, and the flow rate of the gas sucked into the hollow portion 301a can be reduced.

With regard to the microbubble generator 300, the following results ① to ⑧ obtained by measuring the suction force generated in the water stream ejected from the gas-liquid ejection hole 303 will be described. Although the suction force is weak only in the central portion of the water flow, the suction portion can be widened by strengthening the suction force by providing the guide portion around the jet hole.

100V-80W was used as a pump.

① d = 7.0 mm, Q = 10.0 liter / min; 30 g sphere ◎: 60 g sphere ◎

② d = 7.5 mm, Q = 10.5 liters / minute; 30 g sphere ○: 60 g sphere △

③ d = 8.2 mm, Q = 11.5 liters / minute; 30 g sphere ○: 60 g sphere X

④ d = 9.3 mm, Q = 12.5 liters / minute; 30 g sphere ◎: 60 g sphere ○

D = 10.4 mm, Q = 13.5 liters / minute; 30 g sphere ◎: 60 g sphere ◎

⑥ d = 11.5 mm, Q = 14.5 liters / minute; 30 g sphere ◎: 60 g sphere ◎

⑦ d = 12.5 mm, Q = 15.0 liters / minute; 30 g sphere ◎: 60 g sphere ○

⑧ d = 13.5 mm, Q = 15.0 liters / minute; 30 g sphere ○: 60 g sphere X

Here, d is the diameter of the gas-liquid ejection hole 303, and Q is the ejection flow rate. Symbols?,?,?, And X indicate the evaluation of the suction force when the rubber ball ball having a weight of 30 g and the rubber ball ball having a weight of 60 g are placed in the vicinity of the gas-liquid ejection hole 303 for the suction test, and the order of? This indicates that the suction force is lowered. As apparent from these results, it can be seen that the suction force increases in the vicinity of the range where the diameter of the gas-liquid jetting hole 303 becomes 7 mmm and 11 mm. However, when the ejection diameter d becomes large, the bubble tends to be coarse, and it is necessary to adjust it to an appropriate range in accordance with the required flow rate Q. In addition, in the case of 7 mm, the flow rate Q cannot be increased, but the suction force required for the massage of the surface or the like can be secured. In addition, in the case of 11 mm, the flow rate Q can be increased, and the swirling force of the required water flow can be maintained in the hollow portion.

According to the microbubble generator 300 of Embodiment 24 comprised as mentioned above, in addition to the operation | movement obtained by Embodiment 1, the following actions can be acquired.

(1) By providing the tank portion 304, water pressure is applied to the portion of the tank gas absorption hole 305 by the water stored in the tank portion 304, and the suction resistance of the tank gas absorption hole 305 is obtained. It is possible to increase the size, to be stable, to eject the micro bubbles, and to have excellent controllability.

(2) Even if the diameter of the tank gas absorption hole 305 is increased, the gas is not sucked in a large amount, and the suction force in the gas-liquid ejection hole 303 can be secured, so that the microbubble generator 300 is used as a massage device. In this case, a high massage effect and a cleaning effect can be obtained.

(3) Since the diameter of the tank gas absorbing hole 305 can be made large, it is difficult to freeze the malfunction caused by dust or water, etc., and is excellent in maintainability.

(4) When the microbubble generator 300 is used as a massage device, since the scattering prevention part 309 is provided, the liquid which flowed out from the outflow part 308 does not scatter forward, and it is excellent in usability.

(25th Embodiment)

The microbubble generator of Embodiment 25 is described below with reference to the drawings.

35 is a sectional side view of the main portion of the microbubble generator in the twenty-fifth embodiment;

In Fig. 35, reference numeral 331 denotes a microbubble generator in the twenty-fifth embodiment, a container body having a hollow portion 332a of a shape converging from the rear portion toward the front end portion and an opening portion 332b in the rear wall. 332c is a male screw portion established along the edge of the opening portion 332b, and 333 is a rotating member disposed to cover the opening portion 332b with the rotational material by joining the female screw portion 333a to the male screw portion 332c, 334. ) Is a tank gas absorbing hole opened in the rotating member 333, 335 is a hollow portion 332a of the container body 332 through the tank gas absorbing hole 334 disposed on the rear wall of the rotating member 333. Tank portion having a tank side hollow portion 335a in communication with (), and 336 is a tank portion gas introduction pipe having a tank hole opened on the upper side of the tank portion 335.

The difference between the microbubble generator 331 of Embodiment 25 and the microbubble generator 300 of Embodiment 24 is that the rotation member 333 is arrange | positioned so that the opening part 332b of the container body 332 may be covered, and a tank part 335 is disposed on the rotating member 333.

An end portion is formed in the rear wall of the container body 332 by the male screw portion 332c. However, by shortening the length of the male screw portion 332c to about 1/10 or less of the shaft length of the container body 332, the container body 322 is formed. It is possible to maintain a good bubble generation state without preventing the swirl flow inside.

The microbubble generator 331 of Embodiment 25 comprised as mentioned above is demonstrated, referring the following figure.

FIG. 36 is a sectional view showing the main parts of the rear surface of the tank part in the twenty-fifth embodiment with the gas shaft overlapping;

In FIG. 36, reference numeral 333b denotes the rotation center of the rotating member 333, and Y denotes the gas-liquid ejection hole 303 and the surface (from the tank gas absorbing hole 334 in the hollow portion 332a of the container body 332). Gas axis formed over H). The tank gas absorbing hole 334 is slightly drilled away from the rotation center 333b to be drilled. Thereby, the area of the overlapped portion when the gas shaft Y formed in the container body 332 and the tank gas absorbing hole 334 are viewed from the axial direction can be adjusted by rotating the rotating member 333. . By adjusting the overlapping portion, the suction resistance of the tank gas absorbing hole 334 can be adjusted, and the amount of gas to be sucked from the tank gas absorbing hole 334 and its shape can be adjusted. In addition, since operation other than the overlap adjustment of a gas absorption hole and a gas shaft is the same as that of Embodiment 24, description is abbreviate | omitted.

Since the microbubble generator of Embodiment 25 is comprised as mentioned above, in addition to the action obtained by Embodiment 24, the following actions can be acquired.

(1) The rotation member 333 is disposed on the rear wall of the container body 332 to cover the rotation shaft at a position eccentric from the center of the container body 332, and the tank gas absorbing hole 334 with respect to the rotation shaft. Since it is formed in the eccentric position, the projection cross section onto the rear wall of the gas shaft Y formed in the container body 332 and the tank gas absorbing hole 334 overlap each other by rotating or rotating the rotating member 333. The area of the portion to be used can be adjusted, and the amount of gas to be sucked from the tank gas absorbing hole 334 can be adjusted by changing the suction resistance from the tank gas absorbing hole 334 and the like.

(2) The central portion of the container body 332 is depressurized by a swirling flow of liquid, and the gas is sucked from the tank gas absorbing hole 334 disposed on the rear wall of the container body 332, whereby the central portion of the container body 332 is sucked. The gas axis can be formed in the. Since the shape of this gas shaft Y can be adjusted by rotating the rotation member at a predetermined angle, the operability is excellent.

According to the microbubble generator according to claim 1 of the present invention, the following effects can be obtained.

(1) When the gas-liquid mixed fluid flows from the gas-liquid introduction hole into the container body, the gas-liquid mixed fluid introduced from the tangential direction is mixed in the rotationally symmetrical direction of the hollow portion while the gas-liquid mixed vigorously by turning along the inner wall of the container body. Move to gas-liquid ejection hole. At this time, centrifugal force acts on the liquid, centripetal force acts on the gas due to the specific gravity difference between the liquid and the gas, and large bubbles converge on the central axis to form a negative compression (gas axis). In addition, due to negative compression, a force that tries to enter the microbubble generator acts on the external liquid near the gas-liquid ejection hole. On the other hand, as the gas-liquid mixed fluid in the microbubble generator is turning, as the gas-liquid ejection hole becomes closer, the turning speed becomes faster and the pressure increases, and the turning speed and pressure are maximized in the vicinity of the gas-liquid ejection hole, which pushes each other with the negative pressure liquid. It is in a state. Therefore, the gas collected in the negative compression passes through the gap formed by the negative pressure liquid and the gas-liquid mixed fluid which is turning, as a compressor body, and is ejected into the liquid from the gas-liquid ejection hole as a large amount of fine bubbles together with the gas-liquid mixed fluid.

(2) Shear force acts between the negative pressure liquid and the gas collected in the negative compression, and the gas collected in the negative compression is taken over and ejected together with the mixed fluid from the gas-liquid ejection hole, so that a large amount of micro bubbles can be generated.

(3) Since the gas-liquid mixed fluid in which gas and liquid are mixed in advance is supplied to the gas-liquid introduction hole, the mixing ratio of the gas can be adjusted, and furthermore, it can be generated in a controlled state of the generation of microbubbles.

(4) The water stream containing the microbubbles can be brought into sufficient contact with the liquid to be treated, and the amount of dissolved oxygen, reaction efficiency, and the like can be improved.

(5) A large amount of water treatment can be efficiently carried out over a wide range in rivers, dams, water purification facilities, etc., while controlling the discharge state of the water stream by discharging the liquid containing fine bubbles in a predetermined direction.

(6) When the microbubble generator is used in a gas-liquid reaction device or a sewage treatment device, the microbubble generator is used for injecting gas into the microbubble generator even when the fluid flows back into the container body by the residual pressure (negative pressure) in the device when the pump is turned on or off. Since there is no ball, there is no blockage caused by reactants or dirt.

(7) Since the microbubble generator does not have micropores for blowing gas, even when the container body is at a high pressure, no backflow occurs, and more fine and large bubbles can be ejected.

(8) Since a large amount of fine bubbles can be generated, the contact area between gas and liquid can be increased, and the reaction in the gas-liquid reaction device and the purification in the purification device can be promoted. It may also increase the dissolved oxygen in the number of fish farms, fish farms, or freshwater transport vehicles (sea water).

According to the microbubble generator according to claim 2, in addition to the effects of claim 1, the following effects can be obtained.                 

(1) Since the gas-liquid jetting holes are provided on both the left and right sides of the rotational symmetry shaft of the hollow part, the range that can be processed by a single microbubble generator can be widened and water treatment can be performed efficiently, resulting in excellent productivity and convenience. Do.

(2) By varying the ejection characteristics of the respective gas-liquid ejection holes arranged on the left and right sides of the rotationally symmetrical axis, the ejection state of the microbubbles can be controlled to a predetermined state, and water treatment and the like can be efficiently performed.

(3) Since it has two gas-liquid ejection holes, the ejection amount of the gas-liquid mixed fluid discharged from the microbubble generator can be doubled compared with the amount ejected from the single hole, and a large amount of water treatment can be performed.
According to the microbubble generator according to claim 3, in addition to the effects of claim 1, the following effects can be obtained.

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(1) Since the inner circumferential wall of the gas-liquid ejection hole has an inclined portion whose particle diameter is enlarged at a predetermined angle toward the ejecting side, the water flow is limited within a predetermined angle to limit the range in which the water flow including microbubbles or gas before becoming microbubbles is diffused. The inside can be depressurized, and this partial decompression can effectively generate microbubbles in the mixed fluid.

(2) By adjusting the length of the angle and the ejection direction at the inclined portion according to the pressure, flow rate, temperature, etc. of water or fluid to be supplied, the size of the microbubbles diffused in the water stream, the aggregate form of the bubbles, etc. can be changed subtly. have.

(3) When gas-liquid ejection holes are arranged on both sides of the rotationally symmetrical axis, by varying the inclination angle at each inclined portion, specific direction can be imparted to the water streams ejected from the microbubble generator as a whole. Excellent controllability in layers and the like.
According to the microbubble generator according to claim 4, the following effects can be obtained in addition to the effects of any one of claims 1 to 3 and 24.

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(1) When the gas-liquid mixed fluid flows from the gas-liquid introduction hole into the container body, the gas-liquid mixed fluid introduced from the tangential direction turns along the inner wall of the container body, and moves vigorously to the gas-liquid ejection side while the gaseous liquid is mixed vigorously. At this time, centrifugal force acts on the liquid and centripetal force acts on the gas due to the specific gravity difference between the liquid and the gas, and large bubbles converge on the central axis, thereby forming negative compression. This negative compression acts on the force that tries to suck the cap into the microbubble generator. On the other hand, while the mixed fluid in the container body turns, the turning speed increases as the gas liquid ejecting hole approaches, and the turning speed is maximized in the vicinity of the gas liquid ejecting hole, and is pushed together with the cover part of the cap part facing the gas liquid ejecting hole. Accordingly, the gas collected in the negative compression passes through the gas-liquid mixture fluid which is ejected while turning with the cap part of the cap, while being compressed and sheared, and is ejected into the liquid from the gas-liquid ejection hole as a large amount of fine bubbles together with the gas-liquid mixture fluid.

(2) Since a large amount of microbubbles can be generated, the contact area between the gas and the liquid can be increased to promote the reaction in the gas-liquid reaction device or the purification in the purification device. It may also increase the dissolved oxygen in the number of fish farms, fish farms, or freshwater transport vehicles (sea water).

(3) Microbubbles can be generated, the surface area of the bubbles can be made extremely large, and air or a reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at high absorption rates or reaction rates.

(4) The particle size of the microbubbles can be freely controlled in the range of several nm to 100 µm only by adjusting the inflow amount and the revolution speed of the liquid or gas.

According to the microbubble generator according to claim 5, in addition to the effects of claim 4, the following effects can be obtained.

(1) Since the cap support portion and the cap portion are fixed, the cap portion does not act in the rotational direction of the gas-liquid mixture fluid, and the shear force can be effectively applied between the cap portion of the cap portion and the gas to be ejected, and the The collected gas may be taken over and ejected to generate a large amount of microbubbles.

According to the microbubble generator according to claim 6, in addition to the effects of claim 5, the following effects can be obtained.

(1) Since the cap support portion and / or the cap portion are made of a flexible material, the cap portion can be detachably moved with respect to each of the ejection holes within the allowable range of the cap support portion's flexibility and the like. Therefore, since the cap part is sucked to the gas-liquid ejection hole side by negative compression and the gas ejected from the gas-liquid ejection hole is compressed and sheared at the ridge formed in the back surface of the gas-liquid ejection hole of the cap part, it is possible to generate more fine bubbles. .

(2) The surface and the gas-liquid ejection of the ridge at the gas-liquid ejection hole side in response to the flow rate and flow rate of the gas-liquid mixed fluid, which varies depending on the discharge pressure of the pump, the diameter of the gas-liquid introduction hole and the gas-liquid ejection hole, and the shape and volume of the container body. Since the gap size of a lesson changes, it is excellent in versatility.
According to the microbubble generator of Claim 7, the following effects can be acquired in addition to the effect of Claim 4.

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(1) Since the ridge has a curved protrusion formed on the back surface side of the cap portion, the gas-liquid mixed fluid having fine bubbles can be flowed along the ridge surface.

(2) When the material of the cap portion or the cap support portion is made of a flexible material, the ridge portion is sucked in the direction of the gas-liquid jet hole by the negative compression and the flow path is narrowed, so that the gas in the fluid ejected from the gas-liquid jet hole is compressed by the protrusion part. And shearing, and the container body and the external liquid are divided in the cap portion, thereby minimizing the influence of the negative pressure liquid, thereby increasing the power output, and generating a lot of finer bubbles.

 According to the microbubble generator according to claim 8, in addition to the effects of claim 4, the following effects can be obtained.

(1) The cap portion is arranged as a moving material between the gas-liquid ejection hole and the case-shaped frame. The cap part is sucked in the direction of the gas-liquid ejection hole by the negative pressure, and since the gas ejected from the gas-liquid ejection hole is compressed and sheared by the cap part, it is possible to generate a lot of finer bubbles.

(2) The surface and gas-liquid on the gas-liquid ejection hole side of the cap part in response to the flow rate and flow rate of the gas-liquid mixed fluid, which varies depending on the discharge pressure of the pump, the diameter of the gas-liquid introduction hole or the gas-liquid ejection hole, and the shape and volume of the container body. It is possible to change the gap size of the blowholes, which is excellent in stability and controllability of water flow.

(3) When the negative pressure is formed in the container body, the cap part is held at a predetermined position by the suction force of the negative compression and the force in the ejecting direction of the gas-liquid mixed fluid to be ejected. There is nothing to do, and it is hard to wear and is excellent in durability.

  According to the microbubble generator of Claim 9, the following effects can be acquired in addition to the effect of any one of Claims 1-3, 5-8, and 24-24.

(1) Since the tank section is provided, the suction resistance of the air sucked through the tank section gas absorbing hole and the tank section gas introduction pipe can be increased, so that even if the diameter of the tank section gas absorbing hole is increased, the amount of gas is large. It is not sucked in, and gas can be sucked in a stable state.

(2) Since an external pressure fluctuation is alleviated by providing a tank having a large capacity, it is possible to easily control the size, shape, and amount of generation of microbubbles generated in the water stream, and the operability is excellent.

(3) Since the diameter of the gas absorption hole of the tank part can be increased, it is difficult to cause malfunction due to the clogging of dust or scale and the like, and thus the maintenance is excellent.

  According to the microbubble generator of Claim 10, the following effects can be acquired in addition to the effect of any one of Claims 1-3, Claims 5-8, and Claims 24-26.

(1) Since the hollow nozzle is provided with an internal nozzle for ejecting the secondary liquid, finer air bubbles can be generated by effectively contacting the gas-liquid mixed fluid supplied from the liquid introduction pipe and the secondary liquid in the hollow part. Productivity can be improved in chemical reactions.                 

(2) The gas-liquid mixed fluid or liquid continuously introduced from the tangential direction from the secondary liquid introduction pipe into the internal hollow portion moves to the inner nozzle part while turning. At this time, a centrifugal force acts on the liquid, and the center of the swirl flow becomes a negative pressure, thereby forming a negative compression in which the gas in the liquid is collected at the center. On the other hand, the liquid flowing into the hollow portion from the gas-liquid introduction hole moves to the gas-liquid ejection hole side while turning. In this way, the fluid supplied through the secondary liquid introduction pipe and the gas-liquid introduction hole in the hollow part is joined, and a large amount of fine bubbles can be generated.

(3) When the swirling direction of the gas-liquid mixture fluid to be ejected is reversed to the swirling direction of the liquid in the hollow part, the gas converged in the negative compression is instantaneously a microbubble, mixed with the liquid in the hollow part and ejected from the gas-liquid ejection hole. Therefore, even if the gas-liquid ejection hole is arranged in the air, the liquid containing a large amount of fine bubbles can be ejected.

(4) Since there are no pores for blowing gas into the hollow part, when the microbubble generator is used in a gas cleaning tank or a sewage treatment tank in a chemical reaction tank or chemical petroleum front, residual pressure in the device may be reduced when the pump is turned on or off. Remains, even if the fluid flows back, it does not cause blockage by reactants or dirt.

(5) Since it can be made into microbubbles, the surface area of the bubbles is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.
According to the microbubble generator according to claim 11, in addition to the effect of claim 10, the following effects can be obtained.

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(1) More types of liquids or gases can be mixed by introducing various different liquids or gases into each swirl flow generating unit.

(2) The mixed fuel can be produced at a high oxygen rate by one treatment, and the combustion efficiency of the boiler and the like can be improved.

(3) Waste gases and reaction gases having different kinds of factories such as chemical plants can be supplied to the neutralizing liquid, the washing liquid and the reaction liquid at the same time.

(4) Ozone gas may be supplied from aquaculture farms and then air may be used to achieve high sterilization and high oxygen content at the same time.
According to the microbubble generator according to claim 12, in addition to the effect of claim 10, the following effects can be obtained.

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(1) Since the gas-liquid mixture fluid enters the hollow portion from the inner nozzle portion to the hollow portion, the gas-liquid mixture fluid and the liquid can be efficiently mixed.

(2) The swirling force of the liquid from the inner nozzle portion is applied to the swirling force of the gas-liquid mixed fluid, so that a stronger swirl flow is generated, so that the strength is good and a large amount of fine bubbles can be ejected and diffused more widely.
(3) If the secondary liquid introduction hole or the liquid introduction hole of the inner nozzle portion connected in series is opened in the tangential direction opposite to the gas liquid introduction hole, the gas intake rate and reaction rate of the axel in the multistage microbubble generator are It can increase.
(4) By adjusting the revolution speed of the liquid in the hollow portion or in each inner nozzle portion, a large amount of fine bubbles can be ejected from the gas-liquid ejection hole.
According to the microbubble generator according to claim 13, in addition to the effects of claim 10, the following effects can be obtained.
(1) The gas-liquid mixed fluid or liquid continuously introduced from the tangential direction from the secondary liquid introduction pipe into the internal hollow portion moves to the inner nozzle portion while turning. At this time, a centrifugal force acts on the liquid, and the center of the swirl flow becomes a negative pressure, thereby forming a negative compression in which the gas in the liquid is collected at the center. On the other hand, the liquid flowing into the hollow portion from the gas-liquid introduction hole moves to the gas-liquid ejection hole side while turning. In this way, the fluid supplied through the secondary liquid introduction pipe and the gas-liquid introduction hole in the hollow part is joined, and a large amount of fine bubbles can be generated.
In the hollow portion, the gas-liquid mixed fluid can be ejected from the secondary liquid introduction pipe in a forward or reverse direction from the direction of ejection of the liquid from the gas-liquid introduction hole.
The force to enter the inner nozzle part is applied to the liquid near the inner nozzle part by negative compression of the inner nozzle part. On the other hand, the gas-liquid mixed fluid containing the gas from the inner nozzle part gas suction hole moves while turning inside the inner nozzle part, and as the approaching speed of the inner nozzle part approaches the ejection hole, the pressure is increased and the pressure is increased, and the ejection hole of the tip is increased. In the vicinity, the turning speed and pressure are maximized, and they are in a state of being pushed together with the negative pressure liquid. The gas-liquid mixed fluid flows out from the vicinity of the edge of the secondary jet hole to avoid negative pressure liquid. When it flows out, the compressed gas of the negative compression becomes a microbubble, is sheared, ejected with the gas-liquid mixed fluid into the hollow part, mixed with the liquid in the hollow part, and then ejected from the gas-liquid ejection hole.
(2) Since it can be made into microbubbles, the surface area of the bubbles is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.
According to the microbubble generating device provided with the microbubble generator of Claim 14, the following effects can be acquired in addition to the effect of Claim 13.
(1) Since the microbubble generator does not have micropores for blowing gas, residual pressure remains in the device when the pump is turned on or off, so that even if the fluid flows back, it will not be blocked by the fluid or solids.
(2) The gas-liquid mixed fluid sucked into the pump is stirred together with the liquid by the impeller of the pump, and is discharged from the discharge port of the pump to the gas-liquid discharge tube as the air bubbles diffuse.
(3) Since the gas-liquid mixed fluid supplied from the gas-liquid discharge tube to the microbubble generator is stirred in the hollow portion to form fine bubbles, bubbles having a smaller particle diameter can be generated than in the prior art.
According to the microbubble generating device provided with the microbubble generator of Claim 15, the following effects can be acquired in addition to the effect of Claim 14.
(1) The gas is sucked into the gas-liquid suction pipe from the gas suction hole of the suction pipe part, and since the microbubble generator has no fine holes for blowing gas, the residual pressure remains in the device when the pump is turned on or off. Does not cause blockage
(2) When the pump is driven, water flow is generated in the gas-liquid suction tube, and gas is sucked into the gas-liquid suction tube from the gas-suction hole in the gas-liquid suction tube part by the ejector effect, as a subsequent flow of liquid. In this way, a gas-liquid mixed fluid containing gas is sucked into the pump from the inlet of the pump. The gas-liquid mixed fluid sucked in the pump is discharged from the discharge port of the pump into the gas-liquid discharge tube while the air bubbles are diffused by the impeller of the pump.
(3) Since the flow rate of the gas supplied from the gas suction hole of the suction pipe part can be controlled, the amount, size, etc. of the microbubbles can be adjusted suitably.

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According to the microbubble generating apparatus provided with the microbubble generator of Claim 16, the following effects can be acquired in addition to the effect of Claim 15.
(1) The desired gas can be introduced into the gas-liquid suction pipe by communicating the gas introduction pipe with a desired container or the like.
According to the microbubble generating apparatus provided with the microbubble generator of Claim 17, the following effects can be acquired in addition to the effect of Claim 16.
(1) By adjusting the gas flow rate control valve, the amount of gas mixed into the liquid can be adjusted, so that the size of the generated microbubbles can be adjusted.
According to the microbubble generator provided with the microbubble generator of Claim 18, the following effects can be acquired in addition to the effect of Claim 16 or 17.
(1) Since the gas can be forcibly supplied by the air pump, the amount of gas mixed in the liquid can be increased.
According to the microbubble generating device provided with the microbubble generator of Claim 19, the following effects can be acquired in addition to the effect of any one of Claims 14-17.
(1) Since the submersible pump is disposed in the liquid, it does not require a place for arranging the pump on land, so the usability is excellent.
(2) Since the fluid is sucked directly from the inlet of the submersible pump, and no gas-liquid suction pipe is required, the number of parts is small and the productivity is excellent.
(3) Since the inlet port is opened in the liquid, residual pressure is not applied when the submersible pump is turned on or off, and the fluid does not flow back into the gas introduction pipe and thus does not cause clogging.
According to the microbubble generating apparatus provided with the microbubble generator of Claim 20, the following effects can be acquired in addition to the effect of Claim 19.

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(1) By rotating an impeller formed in a gear shape in the suction chamber, the surrounding liquid is sucked into the suction chamber by sucking the surrounding liquid from the suction port opened to face the rotation axis of the impeller, and in the tangential direction of the main wall of the suction chamber. The gas-liquid mixed fluid can be discharged from the connected gas-liquid discharge pipe.

(2) Since the motor chamber with the motor for driving the impeller and the suction chamber with the impeller are integrally formed, the whole body can be made compact, so that the portability is excellent and can be easily applied to a water purification plant or a sedimentation tank.
According to the microbubble generating apparatus provided with the microbubble generator of Claim 21, the following effects can be acquired in addition to the effect of Claim 20.

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(1) Since the branch pipe is disposed near the suction port of the submersible pump, negative pressure is generated in the branch pipe, and gas can be sucked into the negative pressure pipe from the gas introduction pipe and mixed into the liquid.

(2) Since the inner diameter of the negative pressure pipe is larger than that of the branch pipe, when the fluid flows from the branch pipe into the negative pressure pipe, negative pressure is generated in the negative pressure pipe, and gas is sucked into the negative pressure pipe from the gas introduction pipe and mixed into the liquid. .

(3) Since the branch pipe is opened near the inlet of the submersible pump, residual pressure is not applied when the submersible pump is turned on or off, and fluid does not flow back into the gas introduction tube, thereby preventing clogging.
According to the microbubble generating apparatus provided with the microbubble generator of Claim 22, the following effects can be acquired in addition to the effect of Claim 18.

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(1) Since a drive unit such as an air pump motor is not required separately, the productivity is excellent and the whole apparatus can be miniaturized.

According to the microbubble generating apparatus provided with the microbubble generator of Claim 23, the following effects can be acquired in addition to the effect of any one of Claims 14-17, 20-22, and 33-36.

(1) Since a plurality of microbubble generators can be used to eject a large amount of microbubbles from each gas-liquid ejection hole in a predetermined direction, the microbubbles can be ejected more extensively.
(2) By adjusting the angle of the inclined portion of each gas-liquid ejection hole, it is possible to effectively control a discharge state of all water streams and to perform a wide range of water treatment effectively.
According to the microbubble generator according to claim 24, in addition to the effects of claim 2, the following effects can be obtained.
(1) Since the inner circumferential wall of the gas-liquid ejection hole has an inclined portion whose particle diameter is enlarged at a predetermined angle toward the ejecting side, the gas-liquid mixed fluid containing the microbubbles and the gas before becoming microbubbles is limited within a predetermined angle. The inside of the mixed fluid can be reduced in pressure, and by this partial pressure reduction, microbubbles can be effectively generated in the mixed fluid.
(2) In the inclined portion, the angle and the length of the ejection direction are respectively adjusted according to the pressure, flow rate, temperature, etc. of the water or fluid to be supplied, so that the size of the microbubbles diffused into the mixed fluid, the aggregate form of the bubbles, etc. are delicately made. Can change.
(3) When gas-liquid ejection holes are arranged on both sides of the rotationally symmetrical axis, by varying the inclination angle at each inclined portion, specific orientation can be imparted to the gas-liquid mixed fluid ejected from the microbubble generator as a whole. It is excellent in detergency in a reaction tank, a purification layer, etc.
According to the microbubble generator according to claim 25, in addition to the effects of claim 5, the following effects can be obtained.
(1) Since the ridge has a curved and protruding ridge on the rear surface side of the cap portion, the gas-liquid mixed fluid having fine bubbles can flow while guiding along the surface of the ridge portion.
(2) When the material of the cap portion and the cap support portion is made of a flexible material, the ridge portion is sucked in the direction of the gas-liquid jet hole by negative compression and the flow path is narrowed, so that the gas in the fluid ejected from the gas-liquid jet hole is Since the particles are compressed and sheared, finer bubbles can be generated in a large amount.
According to the microbubble generator according to claim 26, in addition to the effects of claim 6, the following effects can be obtained.
(1) Since the ridge has a curved and protruding ridge on the rear surface side of the cap portion, the gas-liquid mixed fluid having fine bubbles can flow while guiding along the surface of the ridge portion.
(2) When the material of the cap portion and the cap support portion is made of a flexible material, the ridge portion is sucked in the direction of the gas-liquid jet hole by negative compression and the flow path is narrowed, so that the gas in the fluid ejected from the gas-liquid jet hole is Since the particles are compressed and sheared, finer bubbles can be generated in a large amount.
According to the microbubble generator according to claim 27, in addition to the effects of claim 4, the following effects can be obtained.
(1) Since the tank section is provided, the suction resistance of the air sucked through the tank section gas suction hole and the tank section gas introduction pipe can be increased, so that even if the diameter of the tank section gas suction hole is increased, the amount of gas is large. It is not sucked in, and gas can be sucked in a stable state.
(2) Since an external pressure fluctuation is alleviated by providing a tank having a large capacity, it is possible to easily control the size, shape, and amount of generation of microbubbles generated in the water stream, and the operability is excellent.
(3) Since the diameter of the gas suction hole in the tank part can be increased, it is difficult to cause malfunction due to the clogging of dust or scale, etc., and thus the maintenance is excellent.
According to the microbubble generator according to claim 28, in addition to the effects of claim 4, the following effects can be obtained.
(1) Since the hollow nozzle is provided with an internal nozzle for ejecting the secondary liquid, finer air bubbles can be generated by effectively contacting the gas-liquid mixed fluid supplied from the liquid introduction pipe and the secondary liquid in the hollow part. Productivity can be improved in chemical reactions.
(2) The gas-liquid mixed fluid or liquid continuously introduced from the tangential direction from the secondary liquid introduction pipe into the internal hollow portion moves to the inner nozzle part while turning. At this time, a centrifugal force acts on the liquid, and the center of the swirl flow becomes a negative pressure, thereby forming a negative compression in which the gas in the liquid is collected at the center. On the other hand, the liquid flowing into the hollow portion from the gas-liquid introduction hole moves to the gas-liquid ejection hole side while turning. In this way, the fluid supplied through the secondary liquid introduction pipe and the gas-liquid introduction hole in the hollow part is joined, and a large amount of fine bubbles can be generated.
(3) When the swirling direction of the gas-liquid mixture fluid to be ejected is reversed to the swirling direction of the liquid in the hollow part, the gas converged in the negative compression is instantaneously a microbubble, mixed with the liquid in the hollow part and ejected from the gas-liquid ejection hole. Therefore, even if the gas-liquid ejection hole is arranged in the air, the liquid containing a large amount of fine bubbles can be ejected.
(4) Since there are no pores for blowing gas into the hollow part, when the microbubble generator is used in a gas cleaning tank or a sewage treatment tank in a chemical reaction tank or chemical petroleum front, residual pressure in the device may be reduced when the pump is turned on or off. Remains, even if the fluid flows back, it does not cause blockage by reactants or dirt.
(5) Since it can be made into microbubbles, the surface area of the bubbles is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.
According to the microbubble generation of Claim 29, the following effects can be acquired in addition to the effect of Claim 28.
(1) More kinds of liquids and gases can be mixed by introducing various different liquids or gases into each swirl flow generating unit.
(2) The mixed fuel can be produced at a high oxygen rate by one treatment, and the combustion efficiency of the boiler and the like can be improved.
(3) Waste gases and reaction gases having different kinds of factories such as chemical plants can be supplied to the neutralizing liquid, the washing liquid and the reaction liquid at the same time.
(4) Ozone gas may be supplied from aquaculture farms and then air may be used to achieve high sterilization and high oxygen content at the same time.
According to the microbubble generator according to claim 30, in addition to the effects of any one of claims 11, 28 and 29, the following effects can be obtained.
(1) Since the gas-liquid mixed fluid enters into the hollow portion from the inner nozzle portion, the gas-liquid mixed fluid and the liquid can be efficiently mixed.
(2) Since the swirling force of the liquid from the inner nozzle portion is applied to the swirling force of the gas-liquid mixed fluid, stronger swirling flow is generated, so that the strength is good and a large amount of fine bubbles can be ejected and diffused more widely.
(3) If the secondary liquid introduction hole or the liquid introduction hole of the inner nozzle part connected in series is opened in the tangential direction opposite to the gas liquid introduction hole, the absorption rate and the reaction rate of the gas into the liquid in the multistage microbubble generator are It can increase.
(4) By adjusting the revolution speed of the liquid in the hollow portion or in each inner nozzle portion, a large amount of fine bubbles can be ejected from the gas-liquid ejection hole.
According to the microbubble generator of Claim 31, the following effects can be acquired in addition to the effect of any one of Claims 11, 12, 28, and 29.
(1) The gas-liquid mixed fluid or liquid continuously introduced from the tangential direction from the secondary liquid introduction pipe into the internal hollow portion moves to the inner nozzle portion while turning. At this time, a centrifugal force acts on the liquid, and the center of the swirl flow becomes a negative pressure, thereby forming a negative compression in which the gas in the liquid is collected at the center. On the other hand, the liquid flowing into the hollow portion from the gas-liquid introduction hole moves to the gas-liquid ejection hole side while turning. In this way, the fluid supplied through the secondary liquid introduction pipe and the gas-liquid introduction hole in the hollow part is joined, and a large amount of fine bubbles can be generated.
In the hollow portion, the gas-liquid mixed fluid can be ejected from the secondary liquid introduction pipe in a forward or reverse direction from the direction of ejection of the liquid from the gas-liquid introduction hole.
The force to enter the inner nozzle part is applied to the liquid near the inner nozzle part by negative compression of the inner nozzle part. On the other hand, the gas-liquid mixed fluid containing the gas from the inner nozzle part gas suction hole moves while turning inside the inner nozzle part, and as the approaching speed of the inner nozzle part approaches the ejection hole, the pressure is increased and the pressure is increased, and the ejection hole of the tip is increased. In the vicinity, the turning speed and pressure are maximized, and they are in a state of being pushed together with the negative pressure liquid. The gas-liquid mixed fluid flows out from the vicinity of the edge portion of the secondary jet hole to avoid negative pressure liquid. When it flows out, the compressed gas of the negative compression becomes a microbubble, is sheared, ejected with the gas-liquid mixed fluid into the hollow part, mixed with the liquid in the hollow part, and then ejected from the gas-liquid ejection hole.
(2) Since it can be made into microbubbles, the surface area of the bubbles is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.
According to the microbubble generator according to claim 32, in addition to the effect of claim 30, the following effects can be obtained.
(1) The gas-liquid mixed fluid or liquid continuously introduced from the tangential direction from the secondary liquid introduction pipe into the internal hollow portion moves to the inner nozzle portion while turning. At this time, a centrifugal force acts on the liquid, and the center of the swirl flow becomes a negative pressure, thereby forming a negative compression in which the gas in the liquid is collected at the center. On the other hand, the liquid flowing into the hollow portion from the gas-liquid introduction hole moves to the gas-liquid ejection hole side while turning. In this way, the fluid supplied through the secondary liquid introduction pipe and the gas-liquid introduction hole in the hollow part is joined, and a large amount of fine bubbles can be generated.
In the hollow portion, the gas-liquid mixed fluid can be ejected from the secondary liquid introduction pipe in a forward or reverse direction from the direction of ejection of the liquid from the gas-liquid introduction hole.
The force to enter the inner nozzle part is applied to the liquid near the inner nozzle part by negative compression of the inner nozzle part. On the other hand, the gas-liquid mixed fluid containing the gas from the inner nozzle part gas suction hole moves while turning inside the inner nozzle part, and as the approaching speed of the inner nozzle part approaches the ejection hole, the pressure is increased and the pressure is increased, and the ejection hole of the tip is increased. In the vicinity, the turning speed and pressure are maximized, and they are in a state of being pushed with the negative pressure liquid. The gas-liquid mixed fluid flows out from the vicinity of the edge portion of the secondary jet hole to avoid negative pressure liquid. When it flows out, the compressed gas of the negative compression becomes a microbubble, is sheared, ejected with the gas-liquid mixed fluid into the hollow part, mixed with the liquid in the hollow part, and then ejected from the gas-liquid ejection hole.
(2) Since it can be made into microbubbles, the surface area of the bubbles is extremely large, and air or reaction gas can be supplied to the sewage, the reaction liquid and the neutralizing liquid at a high absorption rate or reaction rate.
According to the microbubble generator provided with the microbubble generator of Claim 33, the following effects can be acquired in addition to the effect of Claim 18.
(1) Since the submersible pump is disposed in the liquid, it does not require a place for arranging the pump on land, so the usability is excellent.
(2) Since the fluid is sucked directly from the inlet of the submersible pump, and no gas-liquid suction pipe is required, the number of parts is small and the productivity is excellent.
(3) Since the inlet port is opened in the liquid, residual pressure is not applied when the submersible pump is turned on or off, and the fluid does not flow back into the gas introduction pipe and thus does not cause clogging.
According to the microbubble generating device provided with the microbubble generator according to claim 34, in addition to the effect of claim 33, the following effects can be obtained.
(1) By rotating an impeller formed in a gear shape in the suction chamber, the surrounding liquid is sucked into the suction chamber by sucking the surrounding liquid from the suction port opened to face the rotation axis of the impeller, and in the tangential direction of the main wall of the suction chamber. The gas-liquid mixed fluid can be discharged from the connected gas-liquid discharge pipe.
(2) Since the motor chamber with the motor for driving the impeller and the suction chamber with the impeller are integrally formed, the whole body can be made compact, so that the portability and the material properties of the installation are excellent and can be easily applied to a water purification plant or a sedimentation tank. Can be.
According to the microbubble generator provided with the microbubble generator of Claim 35, the following effects can be acquired in addition to the effect of Claim 34.
(1) Since the branch pipe is disposed near the suction port of the submersible pump, negative pressure is generated in the branch pipe, and the negative pressure allows the gas to be sucked from the gas introduction pipe into the negative pressure pipe and mixed into the liquid.
(2) Since the inner diameter of the negative pressure pipe is larger than that of the branch pipe, when the fluid flows from the branch pipe into the negative pressure pipe, negative pressure is generated in the negative pressure pipe, whereby the gas is sucked into the negative pressure pipe from the gas introduction pipe and the liquid It is mixed in the middle.
(3) Since the branch pipe is opened near the inlet of the submersible pump, residual pressure is not applied when the submersible pump is turned on or off, and fluid does not flow back into the gas introduction pipe, thereby causing no clogging.
According to the microbubble generating device provided with the microbubble generator according to claim 36, in addition to the effect of claim 19, the following effects can be obtained.
(1) Since a drive unit such as an air pump motor is not required separately, the productivity is excellent and the entire apparatus can be miniaturized.
According to the microbubble generating apparatus provided with the microbubble generator of Claim 37, the following effects can be acquired in addition to the effect of any one of Claims 20, 21, and 33-35.
(1) Since a drive unit such as an air pump motor is not required separately, the productivity is excellent and the entire apparatus can be miniaturized.
According to the microbubble generating apparatus provided with the microbubble generator of Claim 38, the following effects can be acquired in addition to the effect of Claim 18.
(1) Since a plurality of microbubble generators can be used to eject a large amount of microbubbles from each gas-liquid ejection hole in a predetermined direction, the microbubbles can be ejected more extensively.
(2) By adjusting the angle of the inclined portion of each gas-liquid ejection hole, it is possible to effectively control a discharge state of all water streams and to perform a wide range of water treatment effectively.
According to the microbubble generating device provided with the microbubble generator according to claim 39, in addition to the effect of claim 19, the following effects can be obtained.
(1) Since a plurality of microbubble generators can be used to eject a large amount of microbubbles from each gas-liquid ejection hole in a predetermined direction, the microbubbles can be ejected more extensively.
(2) By adjusting the angle of the inclined portion of each gas-liquid ejection hole, it is possible to effectively control a discharge state of all water streams and to perform a wide range of water treatment effectively.
According to the microbubble generating device provided with the microbubble generator according to claim 40, in addition to the effect of claim 37, the following effects can be obtained.
(1) Since a plurality of microbubble generators can be used to eject a large amount of microbubbles from each gas-liquid ejection hole in a predetermined direction, the microbubbles can be ejected more extensively.
(2) By adjusting the angle of the inclined portion of each gas-liquid ejection hole, it is possible to effectively control a discharge state of all water streams and to perform a wide range of water treatment effectively.

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Claims (40)

A container body having a hollow portion which is formed substantially in rotational symmetry and whose particle diameter decreases toward one or both sides of the axial direction of the rotational symmetry axis, A gas-liquid introduction hole opened in a tangential direction to the circumferential wall of the container body, And a gas-liquid ejection hole which is opened in a rotationally symmetrical axis direction of the hollow part and is disposed in a portion where the particle diameter of the hollow part is reduced, and the gas-liquid ejection hole is drilled at a position slightly opposite to the gas-liquid introduction hole side from the central axis of the container body. Microbubble generator, characterized in that arranged. The microbubble generator according to claim 1, wherein the gas-liquid jetting holes are arranged on both left and right sides of the rotational symmetry shaft, respectively. The microbubble generator according to claim 1, wherein the gas-liquid ejection hole has an inclined portion whose diameter is enlarged in the ejecting direction, and its inclination angle is set in a predetermined range. The fixed cap part of claim 3, wherein the cap part has a cover part disposed at a distance in front of the gas-liquid ejection hole, and an extension part formed of a flexible material and extended to the cover part, and fixed to the outer circumferential wall of the container body. Microbubble generator, characterized in that provided. The microbubble generator according to claim 4, wherein one end side is provided with a cap support part disposed on an outer circumferential wall of the container body and supporting the fixed cap part on the other end side. 6. The microbubble generator according to claim 5, wherein the cap support portion or the fixed cap portion is formed of a flexible material such as synthetic resin or rubber. 5. The microbubble generator according to claim 4, wherein the fixed cap portion includes a ridge formed by being raised to the surface facing the gas-liquid ejection hole. [8] The apparatus of claim 7, further comprising a case-shaped frame disposed on an outer circumferential wall of the container body, and a cap portion formed in a spherical shape or an egg shape held between the case-shaped frame and the gas-liquid ejection hole by a moving material. Micro bubble generator. The tank part gas suction hole of the tank part arranged in the wall part of a container main body, the tank part gas suction hole formed through the wall part between the said tank part and the said container main body, and the tank part gas introduction pipe arrange | positioned at the said tank part. Microbubble generator, characterized in that. According to claim 8, It is provided in the direction of the gas-liquid ejection hole and installed in the tangential direction of the inner nozzle portion disposed in the hollow portion, the inner hollow portion connected to the rear side of the inner nozzle portion and the inner hollow portion A microbubble generator comprising a secondary liquid introduction pipe. 11. The microbubble according to claim 10, wherein the swirl flow generating portion having the inner nozzle portion, the inner hollow portion, and the secondary liquid introducing pipe is provided in multiple stages in the form of a box that can overlap the hollow portion. generator. 11. The microbubble generator according to claim 10, wherein the secondary liquid introduction pipe is connected in the tangential direction in the same direction as or opposite to the gas-liquid introduction hole on the rear side of the inner nozzle part. The microbubble generator according to claim 10, wherein an inner nozzle part gas suction hole is disposed on a rear wall of the inner hollow part or on a rear wall of the inner hollow part of the swirl flow generating part disposed at the rearmost end of the inner hollow part. The microbubble generator according to any one of claims 1 to 13, A pump for supplying a gas-liquid mixture to the microbubble generator, A gas-liquid suction pipe whose downstream side is connected to a suction port of the pump, and And a gas-liquid discharge tube connected upstream to a discharge port of the pump and a downstream side connected to the gas-liquid introduction hole of the microbubble generator. 15. The microbubble generating device having a microbubble generator according to claim 14, wherein the microbubble generator has a gas absorbing hole disposed in a predetermined portion of the gas-liquid suction pipe. 16. The microbubble generating device having a microbubble generator according to claim 15, wherein one end is provided with a gas introduction pipe connected to the suction pipe part gas absorption hole and the other end opened in air or in communication with the reaction gas container. Device. 17. The microbubble generating device having a microbubble generator according to claim 16, further comprising a gas flow rate control valve disposed at a predetermined portion of said gas introducing pipe and adjusting an opening area of said gas introducing pipe. 18. The microbubble generating device having a microbubble generator according to claim 17, further comprising an air pump disposed at a predetermined portion of said gas introduction pipe. 18. The microbubble generating device having a microbubble generator according to claim 17, wherein said pump is a submersible pump which can be used by immersing the whole in liquid. The liquid pump of claim 19, wherein Toothed impeller, Suction chamber containing the impeller, The gas-liquid discharge pipe connected to the tangential direction of the circumferential wall of the suction chamber, An inlet opening facing the axis of rotation of the impeller and sucking the surrounding liquid; A gas introduction pipe whose one end opening is disposed in the vicinity of the suction port, and Microbubble generating device having a micro-bubble generator, characterized in that it comprises a motor chamber, the built-in motor for rotating the impeller. The method of claim 20, wherein the submersible pump, A negative pressure portion to which an end is opened at the suction port and to which the gas introduction pipe is connected; And a branch pipe, one end of which is connected to a predetermined portion of the gas-liquid discharge tube and the other end of which is connected to the negative pressure portion. 19. The microbubble generator with microbubble generator according to claim 18, wherein an impeller of the air pump is arranged in association with a rotation shaft of the pump or the submersible pump. 23. The microbubble generator with microbubble generator according to claim 22, wherein a plurality of microbubble generators are provided, and the gas-liquid discharge pipes are connected to the gas-liquid introduction holes of the microbubble generators, respectively. 3. The microbubble generator according to claim 2, wherein the gas-liquid jetting hole has an inclined portion whose particle diameter is enlarged in the jetting direction, and the inclination angle is set in a predetermined range. 6. The microbubble generator according to claim 5, wherein the fixing cap portion has a ridge formed by being raised on a surface opposite to the gas-liquid ejection hole. 7. The microbubble generator according to claim 6, wherein the fixing cap portion has a ridge formed by being raised on an opposite surface to the gas-liquid ejection hole. The gas tank according to claim 4, further comprising a tank part disposed on the rear wall of the container body, a tank part gas suction hole formed through the wall part between the tank part and the container body, and a tank part gas introduction pipe disposed on the tank part. Microbubble generator, characterized in that. An inner nozzle portion disposed in the hollow portion disposed in the direction of the gas-liquid ejection hole, an inner hollow portion connected to a rear side of the inner nozzle portion, and opened in a tangential direction of the inner hollow portion. A microbubble generator, characterized in that it is provided with a secondary liquid introduction pipe. 29. The microbubble according to claim 28, wherein the swirl flow generation portion having the inner noble portion, the inner hollow portion, and the secondary liquid introduction pipe is provided in multiple stages in the form of a box that can overlap the hollow portion. generator. 30. The microbubble generator according to claim 29, wherein the secondary liquid introduction pipe is opened and connected in the tangential direction in the same direction or in the opposite direction to the gas-liquid introduction hole on the rear side of the inner nozzle portion. 30. The microbubble generator according to claim 29, wherein an inner nozzle part gas suction hole is disposed on a rear wall of the inner hollow part or on a rear wall of the inner hollow part of the swirl flow generating part disposed at the rearmost end. 31. The microbubble generator according to claim 30, wherein an inner nozzle gas suction hole is disposed on a rear wall of the inner hollow part or on a rear wall of the inner hollow part of the swirl flow generating part disposed at the rearmost end of the inner hollow part. 19. The microbubble generator having a microbubble generator according to claim 18, wherein the pump is a submersible pump used by immersing the whole in the liquid. 34. The opening according to claim 33, wherein the submersible pump is formed in a cogwheel-shaped impeller, a suction chamber incorporating the impeller, the gas-liquid discharge pipe connected in a tangential direction of the circumferential wall of the suction chamber, and a rotation shaft portion of the impeller. Micro-bubbles with a micro-bubble generator, characterized in that it has a suction inlet for sucking the surrounding liquid, a gas introduction tube in which one end opening thereof is disposed in the vicinity of the suction port, and a motor chamber in which a motor for rotating the impeller is incorporated. Generator. 35. The submersible pump according to claim 34, wherein the submersible pump is disposed at one end of the suction port and connected to the gas introduction pipe, and one end thereof is connected to a predetermined part of the gas-liquid discharge tube, and the other end thereof is the negative pressure. A microbubble generating device provided with a microbubble generator, characterized by comprising a branch pipe connected to the portion. 20. The microbubble generator with microbubble generator according to claim 19, wherein the impeller of the superpump is arranged in association with the rotation axis of the pump or the submersible pump. 19. The microbubble generating device having a microbubble generator according to claim 18, wherein an impeller of the air pump is disposed in association with a rotation shaft of the pump or submersible pump. 19. The microbubble generator according to claim 18, wherein a plurality of the microbubble generators are provided, and the gas-liquid discharge pipe is connected to the gas-liquid introduction holes of each of the microbubble generators. 20. The microbubble generator with a microbubble generator according to claim 19, wherein a plurality of the microbubble generators are provided, and the gas-liquid discharge pipe is connected to the gas-liquid introduction holes of each of the microbubble generators. 38. The microbubble generator with microbubble generator according to claim 37, wherein a plurality of microbubble generators are provided, and the gas-liquid discharge pipe is connected to the gas-liquid introduction holes of each of the microbubble generators.

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