JP2008036612A - Apparatus for aerial spraying of gas-liquid mixture containing high-density microbubbles - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for generating high-density microbubbles in a medium liquid, mass-producing a gas-liquid mixture containing high-density microbubbles, and further converting any gases or liquids into a gas-liquid mixture. <P>SOLUTION: The apparatus uses the law of free vortex, increases the flow rate of the medium liquid or pressurizes the medium liquid, uses the combination of the characteristics of a venturi tube, the properties of a vortex, and atomization by vortex separation for efficiently producing the gas-liquid mixture containing a large quantity of required microbubbles, and makes the medium liquid fluid repeatedly undergo a pressure change to divide and crush the microbubbles into finer microbubbles. The apparatus removes the obstruction of a forced vortex, controls the pressure of the fluid, minimizes pressure loss, and thus sprays the gas-liquid mixture containing a high-density microbubbles in air and even in a liquid, is driven by a reduced power, has a simple structure and reduced obstruction, and is easily used. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

In the present invention, in order to make an arbitrary gas into a fine bubble having a propensity to shrink under the condition of a constant temperature and pressure, it is taken into a device by self-priming, shredded, pulverized, and the fine bubble is increased to a medium liquid. It can be mixed in a gas-liquid mixture, made into a shower in the atmosphere or gas, and swirled into the liquid as a swirl, and any gas can be changed to any liquid. If the viscosity is appropriate, it is a device that can be finely granulated and ejected in the same manner.
In addition to the above functions, this device can be used as a gas in a fine bubble, a gas in a fine bubble, a liquid in a medium, a liquid in a medium, a gas on a jet side, or a liquid. Different gases and liquids of suitable viscosity can be made into fine bubbles or fine particles and mixed into the jet flow to be jetted. The structure of the device reduces the pressure loss of the fluid, prevents clogging with dust and deposits in the fluid flow path, has a simple structure with little obstacles, and operates with low energy to operate the device. The present invention relates to a gas-liquid mixed liquid aerial jetting device containing fine bubbles with high density, which can be easily used with a simple device.

The majority of conventional microbubble generators are assumed to be generated in water or liquid. When trying to distribute or discharge a gas-liquid mixture containing fine bubbles at high density in the air, Since the gas-liquid mixed solution is accumulated in a water tank or the like and is distributed and discharged by being pumped, it is the present situation that the apparatus set is excessive.
In addition to the above, there is a swirling boundary shearing method, a device that flows a gas-liquid mixture in a spiral shape, pulverizes bubbles with a spiral flow shear force, and discharges the gas-liquid mixture containing fine bubbles into the air, etc. As can be seen, the microbubbles contained therein have not been generated at a high density.

Conventionally, the problem with fine bubble generators is how to generate fine bubbles with a diameter of about 20 μm in water or liquid at a higher density, so the fine bubble-containing gas-liquid mixture is distributed in the atmosphere. However, it has not been envisaged to perform such operations as supplying to a washing tub rotating after being discharged into the atmosphere, or spraying on an object to be cleaned directly.
In addition, in generating fine bubbles in the liquid, it was common to introduce gas into the device by introducing gas, so the generated fine bubbles are pressurized bubbles and the bubbles expand, It was difficult to generate bubbles that shrunk and crushed.
In addition, the conventional apparatus is difficult to use simply because the structure is complicated, a lot of incidental equipment is necessary, and high output power is required.
However, the device set must be configured with a simple structure so that it can be used easily in any situation.
In addition, it is possible to distribute or discharge the fine bubble high-density gas-liquid mixture directly into the atmosphere, and to easily eject the fine bubble high-density gas-liquid mixture into the liquid. Must.
In addition, clogging due to fine suspended solids in water and precipitates from suspended water is unlikely to occur inside the device so that it can be used for suspended water that contains a lot of fine suspended solids in wastewater. Must be structured.

The present invention has been devised in view of the above problems.
The purpose of the fluid is a medium liquid fluid that has a tendency to contract and collapse under the condition that the temperature and pressure are constant, and includes molecular motion such as Brownian motion, temperature change, fluid pressure change, and other fine bubbles. The gas-liquid mixture containing high-density microbubbles with a low Reynolds number and high density that is not affected by the motility action as a high-efficiency, large volume with a simple structure and mechanism that does not easily cause obstacles. It is a gas / liquid mixture generator containing fine bubbles and high density, and in any situation, the gas / liquid mixture containing fine bubbles and high density can be distributed or discharged into the atmosphere. It is an object of the present invention to provide an air jet apparatus for high-density gas-liquid mixture containing fine bubbles that can be used for many purposes with simple operations.

In order to achieve the above object, the first, second, third, and fourth aspects of the invention can be driven by low output power or small potential energy. Any gas or liquid of suitable viscosity is taken in by self-priming into a liquid of a medium that does not interfere with suspension or dirt that does not hinder the pump used for pumping. Fine particles that are mixed at a high density and made into a liquid mixture, and take in any gas or liquid other than the liquid that becomes the medium and the gas that becomes fine bubbles, or the liquid that becomes fine particles, by self-priming. Or it is an apparatus which can eject the thing diffused in the liquid mixture in the air or in the liquid.
The apparatus according to any one of claims 1, 2, 3, and 4 includes a pressurized medium liquid introduction tube, a gas introduction tube that becomes microbubbles, and optionally introduction of a gas or liquid to be taken in. The inner chamber is a cylindrical concave lens-like fluid flow rate accelerator using the principle of the free vortex attached to the tube, the venturi tube for utilizing the pressure change of the fluid, the narrow tube for introducing the gas that becomes a fine bubble, any gas or liquid , A forced vortex boundary plate for controlling the forced vortex induced by the swirling flow, a gas-liquid stirring chamber with the inner mold as a real model of a short vertebra, and a boundary that becomes the boundary of the forced vortex tube It was constructed by assembling parts such as a disk, which also serves as a jet flow adjusting plate for adjusting the shape of the jet flow together with the plate, a stirring cylinder having a stirring function by a vortex ring and a rectifying function of the jet flow, and a donut-shaped adsorption surface.
Liquid containing fine bubbles other than molecular motion such as Brownian motion, temperature change or fluid pressure change is a small bubble with a low Reynolds number that is not affected by the kinetic action as a fluid, and the temperature and pressure are constant Under the conditions, the microbubbles are generated in the medium liquid at a high density, and the propensity for contraction to collapse is not generated, and a large amount of gas-liquid mixture containing high density of fine bubbles can be generated. It was devised as a device that can eject a density-containing gas-liquid mixture into the air and liquid.
In order to efficiently generate fine bubbles with the desired propensity in a stable manner, the bubbles need to have an internal pressure that tends to shrink from the start of their creation. By installing the tube tip of the venturi tube in the contracted part of the venturi tube, the liquid medium flows fast in the spiraled part of the venturi tube and the pressure drops due to the forced vortex in the central axis part of the venturi tube. The large pressure drop due to the separation caused by the fast flow at the tip of the thin tube causes a spraying action, and the pressure that is caused by the vortex and the pressure drop due to the separation causes the self-priming of gas that becomes fine bubbles from the tip of the tube for introducing the gas. The bubbles can be pulled out by specifying the peeling point, and the bubbles can be pulled out continuously by specifying the separation point.The tube tip of the narrow tube for introducing gas is installed in the constricted part of the venturi tube. By the exposure to rapid flow of, was made to bubble with detached from snout contractility without bubbles grow larger resulting from cylindrical tip.
The idea for making bubbles finer is that small bubbles with a low Reynolds number are not affected by the kinetic action of the medium liquid, and bubbles that are about the size of molecules are those of the medium liquid. Utilizing the fact that the bubbles are charged due to molecular motion and no longer agglomerate, making use of the fact that they do not agglomerate, repeatedly apply pressure change and shear to the gas-liquid mixture containing a large amount of fine bubbles to repeat the bubbles. Grind into finer fine bubbles.
In order to inject or disperse a gas-liquid mixture containing fine bubbles in high density into the air, in order to take in the fine bubbles into the medium liquid, the tube tip of the gas introduction tube into the fine bubbles is inserted into the medium liquid. Unless fine bubbles are generated in the liquid, the fine bubbles cannot be included in the liquid to be ejected or distributed in the air. In the case of claim 1, the machine column entering from the outside by forced vortex is stopped at the throat of the venturi tube by a boundary plate of the vortex tube of forced vortex, and the tube tip of the gas introduction tube that becomes a fine bubble is the medium In the case of claim 2, in the case of claim 2, in order to eject the gas-liquid mixture from the venturi tube, the tube tip of the gas introduction tube that becomes a fine bubble functions in the medium liquid, A gas-liquid mixture containing fine bubbles and high density can be ejected or distributed in the air. According to Claims 3 and 4, the shape of the shower for distributing the gas-liquid mixed solution containing fine bubbles in high density in the air can be selected depending on the application.
In addition, when the gas / liquid mixture containing fine bubbles and high density is ejected in the air or in the liquid, the gas in the form of fine bubbles, the liquid in the form of fine particles, the liquid in the medium, the gas on the side to be ejected A gas different from the liquid or a liquid can be made into fine bubbles or fine particles and mixed into the jet flow to be ejected.
The structure of the device reduces the pressure loss of the fluid, it is difficult to cause clogging due to dust and deposits in the fluid flow path, it has a simple structure with few obstacles, and it can be operated with small energy to operate the device. Therefore, a high-density gas-liquid mixed liquid air jetting device that can be used easily with a simple device has been created.

As described above, the effect of the fine bubble high-density gas-liquid mixture liquid jet apparatus according to the present invention is as follows.
(1) Microbubbles can be easily generated efficiently with a simple structure.
(2) By adjusting the diameter of the narrow tube and the pressure of the introduced gas, the size of the bubbles can be adjusted and stable generation can be achieved.
(3) Since the driving energy can be large or small to some extent, it can be used economically and easily.
(4) Since the structure of the device is simple, the operation is simple and there are few obstacles.
(5) Since both a large device and a small device can be manufactured, it can be used in many usage ranges.
(6) Since the types of liquids and gases to be used can be used for various objects, they can be used in various fields. However, if it is toxic, it is necessary to prepare an appropriate environment.
(7) In addition to use in the relationship between liquid and gas, different types of liquids and liquids can also be used. They can be easily diffused, mixed, fused, or diffused in colloidal form due to the compatibility of liquids. be able to. However, it is necessary to prepare an appropriate environment for use.
(8) Since the gas-liquid mixture containing fine bubbles and high density can be ejected or distributed in the air, it can be supplied to things that cannot be contacted.
It can be shown in the above eight items.

The best mode for carrying out the present invention will be specifically described below.
The range in which the apparatus of the present invention can be applied is that the viscosity of the medium liquid is as viscous as water, and with this apparatus, the fine bubble high-density gas-liquid mixture can be ejected in air or in liquid, It was invented as an apparatus that operates at a water pressure of a water level of 2 m or less when the pressure of the external liquid is intended for water when ejected into the liquid.

  In the following, with reference to the drawings, FIG. 1 is an explanatory view of the longitudinal section and configuration of the instrument of the present invention. From the liquid inlet (2), two types of slit valve type and reed valve type for rectification are used. Any type of inlet tube can be used to select the fluid flow rate accelerator as a fluid that is unlikely to be disturbed, and the medium liquid is supplied to the fluid flow rate accelerator (5) whose inner chamber is like a cylindrical concave lens. The fluid is flowed into a venturi pipe (6) that is an injection hole into the gas-liquid stirring chamber after adjusting the fluid to an appropriate flow velocity and pressure with a fluid flow velocity accelerator. There are two types of gas introduction pipes, one with a bundle of narrow pipes and the other with a double pipe inserted into a thin pipe of different thickness so that it can be adapted to the purpose of use. Is placed on the center axis of the fluid flow velocity accelerator and the venturi tube, and the tube tip (9) is placed on the contracted portion of the venturi tube to draw out the gas as fine bubbles. A gas-liquid mixture containing fine bubbles and high density is ejected from the venturi tube into the gas-liquid stirring chamber. A Venturi tube that forms a disk (11) that serves as an ejection flow plate together with a forced vortex boundary plate is installed in the gas-liquid stirring chamber (7) to further pulverize fine bubbles and suppress the pressure loss of the fluid to form an ejection hole to the outside. (8) The fine bubble high-density gas-liquid mixture is fed into (8). A tube tip of a thin tube for introducing a gas or a liquid to be taken in optionally is placed in a contracted portion of the venturi tube (8) to form fine bubbles or fine particles, which are mixed and diffused in a gas / liquid mixture containing fine bubbles. A gas-liquid mixture containing fine bubbles and high density is ejected or distributed from the venturi tube (8) into the outside air or liquid. In addition, a suction surface (12) utilizing the suction force of the vortex tube of the forced vortex induced by the swirling flow that is ejected is provided in a donut shape around the ejection hole outside the apparatus.

  FIG. 2 is a cross-sectional view of a pressurized medium liquid slit-type introduction pipe and a fluid flow velocity accelerator, and an arrow indicates a pressurized flow (A) of the medium liquid from the liquid inlet (2). The liquid flow path (3) that guides the flow of the fluid is deformed and passes along the inner wall of the fluid flow rate accelerator from the flat slit inlet (4) parallel to the inner wall of the fluid flow rate accelerator. Pay without any disruption. In the fluid flow velocity accelerator (5), the flow velocity and angular velocity of the swirling flow flowing out to the jet port (6) provided in the central shaft portion of the cylindrical inner chamber are increased, and the flow velocity of the jet flow ejected to the outside of the fluid flow velocity accelerator is increased.

  FIG. 3 is a cross-sectional view of a pressurized medium liquid slit-type introduction pipe and a fluid flow velocity accelerator, and a pressurized flow (A) of the medium liquid is indicated by an arrow, and is introduced from the liquid introduction port (2). The flow inlet is opened in the circumferential tangential direction on the inner wall of the circumferential portion of the fluid flow speed accelerator while the inner shape of the fluid flow accelerator is maintained, and a rectifying reed valve (18) is provided at such a position as to close the supply inlet, thereby supplying the medium liquid to the fluid flow speed accelerator. It feeds without disturbance along the inner wall of the circumference. In the fluid velocity accelerator (5), the flow velocity and angular velocity of the swirling flow that flows out to the jet port (6) provided in the central axis portion of the cylindrical inner chamber is increased, and the fluid velocity accelerator has a cylindrical lens-like inner chamber. Increase the flow velocity of the erupting flow that erupts outside.

  FIG. 4 is a detailed cross-sectional view around the ejection hole of the instrument of claim 1, and by making the inner chamber of the fluid flow velocity accelerator (5) like a cylindrical concave lens, the swirling flow of the medium liquid is increased in flow velocity and angular velocity. After that, the pipe tip (9) of the gas introduction pipe that becomes fine bubbles is placed in the contracted flow part of the venturi pipe that is sent to the venturi pipe (6) that is an ejection hole to the outside of the apparatus, and the pressure drop of the forced vortex and separation The boundary plate (20) of the vortex tube of the forced vortex placed in the throat of the venturi tube, which can draw out the gas into fine bubbles by pressure drop and stably generate a large amount of fine bubbles, has a high density of fine bubbles in the air When the liquid mixture is ejected, the air column at atmospheric pressure stops entering from the outside, and the hindrance to the generation of fine bubbles is removed. Place the tube tip (10) for introducing gas or liquid that you want to take in from the throat of the venturi tube to the diffuser, and efficiently reduce pressure by forced vortex, pressure drop by peeling, and pressure drop by venturi tube. The gas or liquid can be made into fine bubbles or fine particles, and mixed and diffused into the gas-liquid mixture containing fine bubbles at a high density. However, it does not function when ejected into the air. When the gas-liquid mixture containing fine bubbles and high density is ejected into the liquid outside the device, the forced vortex (E) caused by the swirling jet (F) is generated, and the jet flow and the flow sucked by the forced vortex collide with each other and the shear is large. The force works and the bubbles are more finely crushed. When a gas-liquid mixture containing fine bubbles and high density is ejected into the air or liquid, it is sucked by a forced vortex when the adsorption surface (12) is brought close to contact with the object. Capillaries for introducing liquids function.

  FIG. 5 is a detailed cross-sectional view of a product obtained by adding the stirring cylinder of claim 3 to the apparatus of claim 1, and is close to the jet hole when the gas-liquid mixture containing high density of fine bubbles is jetted into the air. When the jet flow (F) hits the circumferential surface of the stirring cylinder (19), the wake of the jet flow and the flow sucked by the forced vortex collide, and a vortex ring is generated in which the gas-liquid mixture of the jet flow is mixed in the atmosphere. Fine bubbles are taken into the erupted flow. By selecting the shape of the circumferential surface of the stirring tube, the shape of the shower of the jet flow can be made arbitrary.

  FIG. 6 is a detailed cross-sectional view around the ejection hole of an article according to claim 1, in which a stirring cylinder, a forced vortex boundary plate of claim 4, and a disc (11) which is also an ejection flow adjustment disc are added to the instrument of claim 1. By installing a disc, the forced vortex boundary plate installed in the throat of the venturi tube is no longer necessary and is deleted. By selecting the shape of the stirring cylinder and disc, the shower shape combines two cap-shaped jets. And you can get the shape of the shower.

  FIG. 7 is a detailed cross-sectional view around the ejection hole of the instrument of claim 2, wherein the instrument of claim 1 includes a gas-liquid stirring chamber (7) and a disk (11) serving as a forced vortex boundary plate and an ejection flow adjusting plate. ) And a venturi tube (8) that also serves as an ejection hole to the outside, and the position of the tube tip (10) of the narrow tube for taking in any gas or liquid is applied from the throat of the venturi tube (6) to the diffuser section From the venturi tube (6) to the venturi tube (8) throat, the position of the forced vortex boundary plate (20) was changed from the throat of the venturi tube (8). By providing the gas-liquid stirring chamber (7), fine bubbles can be stably taken in, and more fine bubbles can be taken in, and finer fine bubbles can be obtained.

  8 and 9 are attached to the apparatus of claim 2 with the stirrer cylinder (19) of claim 3 and claim 4, and a disk (11) that serves as a boundary plate for forced vortex and a jet flow adjusting plate. Detailed cross-sectional view around the jet hole

Explanatory drawing of the longitudinal section and composition of the instrument of the present invention Cross-sectional view of a slit-type flow velocity accelerator of the instrument of the present invention Cross-sectional view of a reed valve type flow velocity accelerator of the instrument of the present invention The cross-sectional detail figure around the ejection hole of the instrument of Claim 1 of this invention Detailed cross-sectional view around the ejection hole of the instrument combining claim 1 and claim 3 of the present invention Detailed cross-sectional view around the ejection hole of the instrument combining claim 1 and claim 4 of the present invention Sectional detail drawing around the ejection hole of the instrument of claim 2 of the present invention Detailed cross-sectional view around the injection hole of the instrument combining claim 2 and claim 3 of the present invention Detailed cross-sectional view around the ejection hole of the instrument combining claim 2 and claim 4 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body | body body of the instrument of this invention 2 Liquid inlet 3 Liquid introduction path to the slit type flow velocity accelerator 4 Feed port by the slit to the fluid flow velocity accelerator 5 Cylindrical concave lens-like inner chamber of the fluid flow velocity accelerator 6 Venturi tube , Ejection hole 01
7 Gas-liquid stirring chamber 8 Venturi tube, jet hole 02
9 Narrow tube for introducing gas to become fine bubbles or bundle of narrow tubes 10 Narrow tube for taking in gas or liquid optionally taken 11 Forced vortex boundary plate and jet flow adjusting disk 12 Adsorption plate 13 Gas reservoir 14 Gas to be made into fine bubbles Adjustment valve 15 Gas introduction pipe 16 to be microbubbles Gas and liquid adjustment valve 17 to be taken in arbitrarily Gas and liquid introduction pipe 18 to be taken in arbitrarily 18 Rectification reed valve for adjusting the flow of feeding the medium liquid to the fluid flow velocity accelerator 19 Stirring cylinder and jet flow rectifier cylinder 20 by vortex ring 20 Forced vortex boundary plate A Flow in which medium liquid is press-fitted B Flow in which fine gas is sucked in C Flow in which gas or liquid to be taken in arbitrarily is sucked in Flow D Swirling jet The flow E sucked into the center of the forced vortex induced by the flow E The flow sucked into the center of the forced vortex from the outside F The jet flow G ejected outside from the ejection hole Tubular shower or jet controlled by jet flow rectifier

Claims (4)

The condition that the liquid containing fine bubbles other than molecular motion such as Brownian motion, temperature change, or fluid pressure change is a small bubble with a low Reynolds number that is not affected by the motion action as fluid, and the temperature and pressure are constant The microbubbles can be generated at high density in the medium liquid without shrinking and tending to crush, and a large amount of fine bubble high density gas-liquid mixture can be generated. It was devised as a device that can eject the gas-liquid mixture in the air and liquid.
An outline of the names, shapes, and attached parts of each part of the device that passes through the device in the process from the liquid passing through the device as a fluid to being ejected to the outside of the device.
First, a method for introducing a liquid as a pressurized medium into the apparatus can be selected according to the purpose of use, a slit type and a reed valve type for rectification. Any type of inlet tube can be used to feed the fluid flow rate accelerator as a fluid that is less likely to be disturbed. The inner chamber is a cylindrical concave lens-like fluid flow velocity accelerator that adjusts the fluid to an appropriate flow velocity and pressure and feeds it into a venturi tube that forms an ejection hole. Since the size of the device varies depending on the purpose of use, the gas introduction tube that becomes a fine bubble is a bundle of narrow tubes and a narrow tube with a different thickness to accommodate the size of the device. Two types of heavy pipes were prepared. A bundle of thin tubes for gas introduction or a double thin tube is installed at the center axis of the fluid flow velocity accelerator and the venturi tube, and a bundle of thin tubes for gas introduction of a gas that becomes a fine bubble or the tube tip of the double tube is a venturi. Place in the constricted part of the tube. A secondary capillary for self-priming the gas that is desired to be taken in other than the gas that becomes a fine bubble and the liquid having the appropriate viscosity is extended from the throat of the venturi tube to the position of the diffuser at the position of the central axis. To the cylinder tip position. A forced vortex boundary plate for controlling the action of the forced vortex induced by the swirling flow at the throat of the venturi tube is attached to the secondary thin tube in a bowl shape. A gas / liquid mixture containing high-density fine bubbles is ejected from the venturi tube, which is also an ejection hole, into the outside of the apparatus in the air or in a liquid. In addition, an adsorption surface using a suction force acting so as to be attracted to the ejection hole generated by the force of the vortex tube of the forced vortex induced by the swirling flow is provided in a donut shape around the ejection hole outside the apparatus.
By assembling the parts as described above, a fine bubble high-density gas-liquid mixed liquid air jet apparatus was configured.
The function of each part of this device and the behavior of fluid
The structure of the introduction pipe of the pressurized medium liquid into the apparatus is a cylindrical circumference inside the inner chamber of the fluid velocity accelerator so that a swirl flow with less disturbance of the medium liquid is formed inside the inner chamber of the fluid velocity accelerator. A structure in which a flat slit that is parallel to the inner wall of the inner circumference of the fluid velocity accelerator is opened as a feed inlet so that the medium liquid can be fed without disturbance from the tangential direction of the head along the inner wall of the circumference, or the medium With the internal shape of the liquid introduction pipe, open the inlet in the tangential direction of the circumference on the inner wall of the inner circumference of the fluid flow velocity accelerator, and provide a rectifying reed valve at a position that closes the inlet. The medium liquid can be fed along the inner wall without any disturbance. The function of the fluid flow velocity accelerator is to make the inner chamber like a cylindrical concave lens, thereby increasing the flow velocity and angular velocity of the swirling flow that flows out to the outlet provided in the central axis part of the cylindrical inner chamber, and to the outside of the fluid flow velocity accelerator The structure of the gas introduction tube that takes in the gas for making fine bubbles by self-priming into the device is designed to increase the flow velocity of the jet flow to be ejected. A structure in which a plurality of thin tubes are bundled so as to draw a spiral along a swirling flow around a secondary thin tube to be taken in by self-priming, or a thin tube for introducing gas that becomes a fine bubble is formed on the outside. A double tube with the next narrow tube inside, a narrow gap is secured between the tubes, and the gap is used as a gas introduction path for fine bubbles. The center of the fluid flow velocity accelerator and venturi tube It arrange | positions so that a shaft part may be penetrated. By installing the tube tip of the thin tube for gas introduction by self-priming of the gas that becomes fine bubbles in the contracted part of the venturi pipe, the medium liquid flows through the contracted part of the venturi pipe with a spiral fast flow, so that the venturi Pressure drop due to forced vortex occurs in the tube center axis.
In addition, a large pressure drop due to the separation that occurs in a fast flow occurs at the end of the gas-introducing narrow tube, and a spraying action occurs. Due to the pressure drop due to the vortex and the pressure drop due to peeling, the gas that becomes fine bubbles can be pulled out from the tube tip of the gas introduction thin tube as bubbles by self-priming. You can pull out all the bubbles. In addition, by installing the tube tip of the narrow tube for introducing gas in the contracted flow part of the venturi tube and being exposed to a fast flow, bubbles generated from the tube tip are detached from the tube tip without growing greatly, and have contractility. It becomes a bubble. The function of the boundary plate of the vortex tube of the forced vortex is that the air column of the vortex part generated at the central axis of the forced vortex entering from the outside when the gas-liquid mixture is ejected into the air Must be received by the boundary plate so that the atmospheric pressure air column does not reach the tip of the gas introduction pipe. In this apparatus, the forced vortex has a shape that penetrates the central axis of the fluid flow velocity accelerator and the venturi tube and also penetrates the central axis of the cap-shaped jet flow generated outside the apparatus. Place the tube tip of the narrow tube for gas introduction into the venturi tube at a position where it is most effective to draw out the bubble with the propensity to make fine bubbles, and enter the tube tip of the narrow tube for gas introduction from the outside. A vortex tube boundary plate was installed at the throat of the venturi tube to prevent the incoming air column from reaching, preventing the air column from entering. A tube tip of a secondary thin tube for taking in a gas and a liquid having an appropriate viscosity, which are to be taken into the apparatus, other than the gas that becomes fine bubbles by self-priming, is placed at a position that hangs from the throat portion of the venturi tube to the diffuser portion. The pressure drop due to the forced vortex induced by the swirling flow that flows quickly through the Venturi tube, and the large pressure drop due to the separation that occurs at the tip of the tube due to the fast flow causes a mist blowing action, from the throat where pressure is lowest in the Venturi tube to the diffuser part By placing the tube tip, the suction force of self-priming of gas or liquid from the tube tip is the strongest, and it is possible to efficiently mix and diffuse fine bubbles or fine particles into a gas-liquid mixture containing fine bubbles and high density. it can.
In this equipment, the gas that is desired to be taken in, other than the gas that becomes fine bubbles, and the secondary capillary for taking in the liquid with the appropriate viscosity by self-priming function only when the jet flow is jetted to the outside in the liquid. When jetting the jet flow to the outside in the air, the air column enters from the outside and does not function because it reaches the tube tip. However, when an object is applied so as to come into contact with the ejection hole, the ejection flow and the external flow sucked by the suction force of the forced vortex collide with each other in front of the ejection hole, and the same state as in the liquid The air column from the outside is blocked at the tube tip of the secondary tubule and functions in the same way as when it is ejected into the liquid. Note that a large pressure change occurs when the gas-liquid mixture passes through the venturi tube, and the bubbles are crushed into finer bubbles. Bubbles are also crushed by a large change in pressure when ejected from the ejection hole and a large shear force that occurs when the ejected flow and the flow sucked by the forced vortex collide. The donut-shaped surface attached around the outside of the jet hole of this device creates a strong pressure drop field at the central axis of the swirling flow due to the action of the forced vortex induced by the swirling flow ejected from the jet hole. A suction force toward the hole is generated, and an action of sucking on the doughnut-shaped adsorption surface occurs.
The parts with the above functions are assembled to minimize the pressure loss of the fluid as much as possible, and the structure of this device is created to create a fluid flow mainly composed of the medium liquid, which contains fine bubbles at high density. It is simple and simple to generate a gas-liquid mixture, and to spout a mixture liquid containing any gas and a liquid with suitable viscosity into fine bubbles or fine particles into the air or liquid. A gas-liquid mixed liquid air jetting device containing fine bubbles and high density, characterized in that the device is a simple device. The condition that the liquid containing fine bubbles other than molecular motion such as Brownian motion, temperature change, or fluid pressure change is a small bubble with a low Reynolds number that is not affected by the motion action as fluid, and the temperature and pressure are constant The microbubbles are generated at a high density by the medium liquid, and the gas bubbles and the liquid mixture containing the fine bubbles at a high density can be stably generated in a large amount. It was devised as a device that can eject a gas-liquid mixture containing high-density bubbles into air and liquid.
Using the device of claim 1 as a basic type, the boundary plate of the forced vortex of the device of claim 1, and any gas other than the gas that becomes a fine bubble or a secondary fluid for self-priming a liquid of suitable viscosity A function was added to the one that changed the position of the tube tip of a typical thin tube to make it a more stable mechanism.
The outline is
First, a method for introducing a liquid as a pressurized medium into the apparatus can be selected according to the purpose of use, a slit type and a reed valve type for rectification. Any type of inlet pipe can be fed as a fluid that is less likely to disturb the fluid flow rate accelerator. The inner chamber is a cylindrical concave lens-like fluid flow rate accelerator that adjusts the fluid to an appropriate flow rate and pressure and feeds it into a venturi tube that serves as an ejection hole for the gas-liquid stirring chamber. Since the size of the device varies depending on the purpose of use, the gas introduction tube that becomes a fine bubble is a bundle of narrow tubes and a narrow tube with a different thickness to accommodate the size of the device. Two types of heavy pipes were prepared. A bundle of thin tubes for gas introduction or a double thin tube is installed at the central axis of the venturi tube that serves as a jet hole to the fluid flow velocity accelerator and the gas-liquid stirring chamber. A tube end of a bundle or a double tube is placed in a contracted portion of a venturi tube that serves as an ejection hole for the gas-liquid stirring chamber. The sub-tubular tube for self-priming the gas that is desired to be taken in, other than the gas that becomes a fine bubble, and the liquid having the proper viscosity by self-priming is the contraction flow of the venturi pipe that becomes the outlet hole to the outside at the position of the central axis. The tube is extended to the position of the tube tip. A fine bubble-containing gas-liquid mixture is jetted from the Venturi tube, which is also the jet hole from the fluid velocity accelerator to the gas-liquid stirring chamber, into the gas-liquid stirring chamber, and a jet flow adjustment circle that also serves as a forced vortex boundary plate in the gas-liquid stirring chamber A plate is attached to a secondary thin tube in a bowl shape, fine pressure bubbles are crushed by suppressing the pressure loss of the fluid in the gas-liquid stirring chamber, and the venturi tube, which is also an ejection hole to the outside, is sent to the outside of the device in the air or in liquid Then, a gas-liquid mixture containing fine bubbles and high density is ejected.
In addition, an adsorption surface using a suction force acting so as to be attracted to the ejection hole generated by the force of the vortex tube of the forced vortex induced by the swirling flow is provided in a donut shape around the ejection hole outside the apparatus.
By assembling the parts as described above, a fine bubble high-density gas-liquid mixed liquid air jet apparatus was configured.
The function of the device constructed by changing the structure of the device of claim 1 and adding a function to the device, and the behavior of the fluid due to the function of the portion different from the device of claim 1 are as follows:
The jet flow of the gas-liquid mixture containing fine bubbles ejected from the fluid velocity accelerator by the venturi tube is once held in the gas-liquid stirring chamber, and the fine bubbles of the gas-liquid mixture are mixed by mixing the low-Reynolds number fine bubbles with the medium liquid. As the density of the bubbles is homogenized, the content of fine bubbles in the gas-liquid mixture containing fine bubbles is increased, and the medium liquid is supersaturated with a gas that becomes fine bubbles. The inner part of the gas-liquid stirring chamber is a short vertebra vertebra to avoid pressure loss of the fluid as much as possible, and the jet flow is also used as a boundary plate that becomes the boundary of the vortex tube of the forced vortex in the gas-liquid stirring chamber. A disk was also set up to serve as a jet flow adjustment plate that encouraged the flow to flow without delay. The disc receives the jet flow ejected from the venturi tube as a boundary plate of the vortex tube. Since the jet flow is stopped by the disc, a flow is generated between the jet hole and the boundary plate that is sucked toward the jet hole by the action of the forced vortex induced by the jetted swirl flow. When the flow toward the jet hole and the jet flow collide with each other, a spiral vortex ring mainly composed of gas-liquid mixture is generated, and a large shearing force works at the boundary of the vortex ring with the spiral flow. As a result, the bubbles are crushed and become finer bubbles. However, since the vortex of the vortex ring is formed, the fine bubbles are coalesced and aggregated to form an air column and cause a large bubble, but the influence on the apparatus is small. Since the flow is constantly swirling in the gas-liquid stirring chamber, bubbles are united with the central axis portion of the swirling flow and aggregate to generate an air column. Therefore, in order to prevent the generation of air columns, a disc as a current plate is installed. From the gas-liquid stirring chamber, the fluid passes through a venturi tube that also serves as an ejection hole, and is ejected to the outside as a cap-shaped ejection flow. When jetting a gas-liquid mixture containing fine bubbles and high density into the air or liquid outside, venturi pipes that are jetted outside to take in any gas or liquid that you want to take in, other than the gas that becomes fine bubbles, by self-priming By placing a tube tip of a secondary thin tube for introducing gas or liquid to be arbitrarily taken into the contracted flow part of the throat and installing a boundary plate of the vortex tube at the throat, the gas or liquid to be taken in optionally Fine bubbles or fine particles can be mixed and diffused in the gas-liquid mixture containing fine bubbles and high density.
Assembling the part accompanied by the function of the device added to the function of the device of claim 1 so as to suppress the pressure loss of the fluid as much as possible, the structure of this device, creating a fluid flow mainly composed of a medium liquid, A gas-liquid mixture containing fine bubbles at high density is generated by the action of the flow, and any mixture of gas and liquid with suitable viscosity is taken into the air as fine bubbles or fine particles. Or it is a simple device that can be easily ejected into a liquid,
A fine-bubble high-density gas-liquid mixture air jet device. The circumferential inner wall of the stirring cylinder having a rotating inner shape such as a cone or an ellipse is received and urged by the swirling jet flow jetted out from the apparatus of claim 1 or 2 to the outside. The jet shape is adjusted to the outside. By selecting the shape of the inner shape of the stirring cylinder and the shape of the outer end portion of the circumferential inner wall, the shape of the swirling jet flow ejected to the outside can obtain an arbitrary swirling jet shape. In addition, the swirling flow in the shape of a spiral swirled in a stirring cylinder collides with a whirling swirl jet flow ejected from a blow hole and the external flow sucked by the vortex tube of a forced vortex induced by the swirl jet flow. Is formed. The vortex ring is formed mainly by the air sucked when the erupting flow is blown into the air, and the vortex ring takes in fine bubbles into the gas-liquid mixture of the erupting flow, and the fine bubbles contained in the gas-liquid mixture containing the fine bubbles The density becomes higher. When jetting the jet flow into the air, if an object is touched so as to come into contact with the discharge port of the stirring cylinder, the jet flow and the external flow sucked by the suction force of the forced vortex collide with each other in front of the discharge port. In the stirring cylinder, the vortex ring takes in the air sucked from the outside, the gas-liquid mixture jetted into the stirring cylinder is further stirred and mixed, and the bubbles of the gas-liquid mixture in the jet flow are finely crushed, and The density of fine bubbles increases because the atmosphere is taken in. When the jet stream is jetted into the liquid, the bubbles of the gas-liquid mixture jetted to the stirring cylinder are pulverized more finely by the action of the shearing force by the vortex ring.
The part having the function of the device according to claims 1 and 2 is assembled so as to suppress the pressure loss of the fluid as much as possible, and the structure of the device is used. A flow is created and a gas-liquid mixture containing fine bubbles at high density is generated by the action of the flow, and any gas and liquid of suitable viscosity are taken in as fine bubbles or fine particles. A fine-bubble high-density gas-liquid mixed liquid air jetting apparatus, wherein the gas-liquid mixed liquid is a simple device capable of simply jetting the gas-liquid mixed liquid into the air or liquid. The disc having the function of the forced vortex boundary plate and the jet flow adjusting disc is provided in the stirring tube by the vortex ring of claim 3 and the stirring tube having the function of the jet flow rectifying cylinder. The disc receives the jet flow ejected from the venturi tube as a boundary plate of the vortex tube. Since the jet flow is stopped by the disc, a flow is generated between the jet hole and the boundary plate that is sucked toward the jet hole by the action of the forced vortex induced by the jetted swirl flow. When the flow toward the jet hole and the jet flow collide, a spiral vortex ring mainly composed of gas-liquid mixture is generated, and a large shearing force acts on the boundary of the vortex ring with the spiral flow. Thereby, the bubbles are crushed and become finer bubbles. However, since the vortex of the vortex ring is formed, fine bubbles are coalesced and agglomerated to form an air column and cause a large bubble, but the effect as a measure is small. In addition, the function of the boundary plate of the vortex tube attached to the throat of the venturi tube in order to prevent the air column entering from the outside in claim 1 is the function of the forced vortex boundary plate in the stirring tube. To delete.
The swirling jet flow jetted out from the apparatus of claim 1 or 2 to the outside is received by the circumferential inner wall of the stirring cylinder having a rotating body-like inner shape such as a cone or an ellipse, and prompted. The shape of the swirling jet flow jetted to the outside by controlling the shape of the cap-shaped jet flow even with the disc having the function of the jet flow adjusting disc in the stirring cylinder when the jet shape is adjusted to the outside The shape of the inner shape of the stirring cylinder and the shape of the outer end of the circumferential inner wall are selected, and the shape of the jet flow adjusting disk is selected to obtain a shape combining any two swirling jet flows. Can do.
The part having the function of the device according to claims 1 and 2 is assembled so as to suppress the pressure loss of the fluid as much as possible, and the structure of the device is used. A flow is created and a gas-liquid mixture containing fine bubbles at high density is generated by the action of the flow, and any gas and liquid of suitable viscosity are taken in as fine bubbles or fine particles. A fine-bubble high-density gas-liquid mixed liquid air jetting apparatus, wherein the gas-liquid mixed liquid is a simple device capable of simply jetting the gas-liquid mixed liquid into the air or liquid.

Images