JPH10229781A - Method and device for deffusing air into water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the function of bubble generating part from being lowered by clogging the mesh of device for deffusing air in water, to enable long-term continuous use, to satisfactorily dissolving oxygen in water and to provide miniaturized, lightened and stability improved simple structure. SOLUTION: A bubble deffusing means 5 composed of a porous member, for which a cylindrical space part 10 is opened at a central part and an air deffusing surface 12 is turned upward while closing its lower surface side, is communicated and connected through an air feeding pipe 3 to an air supply means 2. In the air supply route of bubble deffusing means 5, unipolar strengthened magnetic field generating means 9 are interposed and installed at two positions at least while fixing magnetic rings 6 and 7 in mutual repulsive state. Besides, the bubble deffusing means 5 is composed of a porous ceramic molded body having any one of truncated conical form, semispherical form, lateral cylindrical form or lower half closed spherical form and further, a conical opening part is provided while expanded its diameter with the turn of the lower side of cylindrical space part 10 to the downside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to underwater aeration, so-called aeration, for feeding aquaculture fish, ornamental fish, etc. to a breeding aquarium or a filtration tank, supply of dissolved oxygen into water, and promotion of convection of water using rising bubbles. Prevention of water rot caused by water, prevention of water rot in drinking water storage tanks, stock tanks for transporting live fish, use for water purification equipment, use for irrigation water for agriculture and hydroponics The present invention relates to an underwater aeration method and an apparatus therefor.

[0002]

2. Description of the Related Art Conventionally, as an underwater aeration device using this type of apparatus, a high-output large-capacity air stone made of a porous ceramic having a ball shape or a large cylindrical shape immersed in a deep portion of a water tank has been used. In some cases, compressed air is supplied by an air pump compressor or a blower, and is continuously diffused in bubbles in water to supply oxygen to the water. In addition, there is an apparatus that increases the dissolved amount of oxygen dissolved in water by various oxygen supply devices that increase the contact area between water and air, and purifies sewage by aeration at that time.

[0003]

However, since the conventional devices circulating for underwater aeration are spherical or large-sized cylindrical devices of a horizontal type, the bubble generation rate in the upper half is lower. Since it differs due to the buoyancy of the bubbles themselves compared to the bubble generation rate of half, a pressure difference occurs during that time, and only the lower half is depressurized. The problem that impurities, contaminants such as manure, and other contaminants are sucked and adhered, and clogging occurs, which gradually spreads from the lower part to the upper part, and as a result, the function of diffusing bubbles is reduced and finally stopped. Had. In addition, air stone (porous ceramic for aeration)
However, there is a problem that a so-called slip phenomenon occurs in which oxygen in the air does not dissolve into water even when the amount of bubbles is increased by blowing compressed air by a compressor or a blower pump for a high-output large-capacity air pump. In addition, the vibrating wave energy from the air pump compressor and blower is injected into the water through the air stone (porous ceramic for air diffusion), resulting in the fish skin being washed away by the ultrasonic cleaning effect. However, there is also a problem that the mucus and mucous membrane for protecting the original fish body from pathogenic bacteria and the like are peeled off, thereby causing a disease.

Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and has been made to prevent a function of an air bubble generating portion from being deteriorated due to occurrence of clogging of an underwater aeration device, and As the air supply pipe can be made smaller in size, the output of compressors and blower pumps for the air supply device can be reduced, and overall energy saving can be achieved. It is an object of the present invention to provide an underwater air diffusion method and a device which can be used in, for example, an automobile loading water tank for transporting live fish and the like, by adopting a simple structure that is lightweight and has enhanced stability.

[0005]

In order to achieve the above-mentioned object, according to the present invention, oxygen in air is excited by passing through a monopolar reinforcing magnetic field in which magnetic rings are fixed to repel each other. And then diffusing bubbles in water through an upwardly directed conical or spherical diffusing surface.

[0006] A porous member having a cylindrical space portion connected to the air supply means via an air supply pipe is opened at the center, the lower surface side is closed, and the diffuser surface is directed upward. And at least two monopole-enhanced magnetic field generating means interposed and installed in an air supply path of the bubble diffusing means and fixed in a state in which magnetic rings are repelled from each other. In the underwater aerator.

The bubble diffusing means may be a porous ceramic molded body having any one of a truncated conical shape, a hemispherical shape, a horizontal cylindrical shape, a spherical shape in which the lower hemisphere is closed, or a cylindrical shape. It may have a conical opening part whose diameter is enlarged as the lower side of the shape space part becomes lower.

Further, the monopole-enhanced magnetic field generating means may be fitted and disposed around an air supply pipe facing an opening end in the cylindrical space of the bubble diffusion means, or may be externally attached to the air supply pipe immediately above the bubble diffusion means. Or inside the air-supply pipe facing the opening end in the cylindrical space of the bubble diffusion means, and a housing externally attached to the air-supply pipe immediately above the bubble diffusion means. It can be made to be alternately installed with the one installed inside. Incidentally, a cylindrical partition body having a plurality of slit holes formed in a side surface for convective circulation of water may be arranged so as to be surrounded by an underwater air diffuser in a water tank.

In the underwater aeration method and apparatus according to the present invention, at least two monopolar strengthening magnetic field generating means in which the magnetic rings are fixed in a state of repelling each other are dissolved in water at a high water temperature in summer. Exciting oxygen in the air that passes through it, making it easier to dissolve into water and increasing the amount of dissolved oxygen that dissolves in water, even when the saturation value of oxygen is low and the ability to dissolve oxygen is low. Thus, the purification of sewage is promoted by the activation of aerobic bacteria involved in aeration and water purification. In addition, the bubble diffusing means for diffusing bubbles in water through the upwardly directed conical or spherical diffusing surface instantaneously disturbed the stability of oxygen in the air, which is a stable mixed gas, by a magnetic field. Since water is diffused later in the water, oxygen can be dissolved well into the water, and the lowering of the function of the bubble generator due to clogging on the lower surface, unlike a conventional device for water diffusion, can be prevented for a long time. To enable continuous use.

Further, the bubble diffusing means of a porous ceramics molded body having any one of a truncated conical shape, a hemispherical shape, a horizontal cylindrical shape, and a spherical shape in which the lower hemisphere is closed,
Since the lower portion of the cylindrical space portion has the conical opening portion which is enlarged as the lower side thereof becomes lower, the thickness width between the diffusing surface and the inner wall of the cylindrical space portion can be appropriately set small, and the air supply means However, even if the pressure is low, the ability to eject air can be sufficiently increased.

Further, the monopole-enhanced magnetic field generating means may be fitted and arranged around the air supply pipe facing the opening end in the cylindrical space of the bubble diffusion means, or may be externally attached to the air supply pipe immediately above the bubble diffusion means. Or inside the air-supply pipe facing the opening end in the cylindrical space of the bubble diffusion means, and a housing externally attached to the air-supply pipe immediately above the bubble diffusion means. Since the one installed inside is alternately provided, it is possible to install and change a plurality of underwater diffusers in accordance with the size of the water tank. In addition, the unipolar reinforcing magnetic field generating means of the housing externally attached to the air supply pipe with respect to the uniformly rising bubbles from the bubble diffusion means generates a leakage magnetic field also around the outside of the housing and rises uniformly around the housing. The bubbles from the bubble diffusion means are also excited by the magnetic field to improve the ability to dissolve in water.

Since a cylindrical partition body having a plurality of slit holes formed in a side surface for convective circulation of water is arranged around a submerged air diffuser in a water tank, the cylindrical partition body is formed by an upward flow of bubbles. Water is sucked into the cylindrical partition body through the slit hole due to the pressure difference caused by the relative velocity of the water flow inside and outside the body, and at the same time, the water inside the cylindrical partition body fills the slit hole near the water surface side as the bubbles rise. A convection circulation is generated in which the water is discharged to the outside through the convection.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
For example, underwater aeration, so-called aeration, for breeding aquariums and aquariums for cultured fish and aquarium fish, supply of dissolved oxygen to water, prevention of water rot by promoting convection of water using rising bubbles, drinking water It is an underwater air diffuser used for preventing water rot in water storage tanks, etc., stock tanks for transporting live fish, use for water purification equipment, irrigation water for agriculture, use for hydroponics, etc. As shown in FIG. 1, the underwater air diffuser 1 is connected to an external air supply means 2 such as an air pump, a compressor, a blower pump, or the like via an air supply pipe 3, and is immersed in a deep portion of the water tank 4. For example, the external shapes are frustoconical (see FIG. 2) and hemispherical (see FIG. 7).
Bubble diffusion means 5 made of a porous ceramics molded body having any one of a shape of a horizontal cylinder (see FIG. 9), a spherical shape in which the lower hemisphere is closed (see FIG. 8), and the bubble diffusion means 5 And a monopole-enhanced magnetic field generating means 9 arranged in at least two locations where magnetic rings 6 and 7 made of, for example, permanent magnets are fixed so as to repel each other. I have.

The bubble diffusion means 5 has a cylindrical space portion 10 formed with an opening along the central axis, a lower surface side closed by a bottom plate 11 such as a magnetic plate or a ceramic plate, and a frustoconical side surface (FIG. 1). ), And a diffuser surface 12 such as a hemispherical spherical surface (see FIG. 7) is directed upward.
The unipolar reinforcing magnetic field generating means 9 installed in the air supply passage includes magnetic rings 6, 7 on the peripheral surface on the opening end side of the air supply pipe 3.
Of the magnetic rings 6, 7
Is fitted and fixed inside the cylindrical space 10 so that the open end of the air supply pipe 3 is held so as to face the cylindrical space 10 (see FIGS. 3 and 7). As shown in FIGS. 2 and 7, on the lower side of the cylindrical space portion 10,
By forming the conical opening 8 gradually increasing in diameter as it goes downward, the thickness between the diffusing surface 12 and the inner wall of the cylindrical space 10 is appropriately set small, and the air supply means 2 is low. Even if it is pressure, it is designed to be able to sufficiently increase the air blowing ability. Reference numeral 13 denotes an upper lid of the bubble diffusing means 5. As shown in FIG. 8, a conventional spherical air stone (porous ceramic for aeration) is adopted as the bubble diffusion means 5, and the lower hemisphere portion is closed with a hemispherical bottom plate 11 for use. Or, in the case of a large size, it is a matter of course that a conventional horizontal cylindrical shape may be adopted, and the lower half cylindrical portion thereof may be closed with the bottom plate 11 for use.

As another embodiment, for example, as shown in FIG. 4, the monopole-enhanced magnetic field generating means 9 is a cylindrical housing 14 externally attached to the air supply pipe 3 immediately above the bubble diffusing means 5.
It may be installed inside, and the cylindrical space 10 may be left hollow. Further, as shown in FIG. 5, a monopolar reinforcing magnetic field generating means 9 is arranged in a cylindrical space 10 of the bubble diffusing means 5, and a part immediately above the bubble diffusing means 5 separately from the bubble diffusing means 5. The air supply pipe 3 may be alternately provided with the one installed inside the cylindrical housing 14 externally attached to the air supply pipe 3. In the illustrated example, the combination of the monopolar reinforcing magnetic field generation means 9 and the bubble diffusion means 5 is 2
It is also possible to set so as to connect and arrange more than one.

Further, as shown in FIGS. 1 and 6, a plurality of slit holes 15 are formed in the side surface to make the water in the water tank 4 convectively circulate together with air bubbles.
The cylindrical partition body 16 at the position (determined by the water depth) is disposed around the entire underwater air diffuser 1 in the water tank 4 like a chimney. At this time, by disposing the uppermost slit hole 15 so that the water surface in the water tank 2 straddles, the upward flow of bubbles inside the cylindrical partition body 16 causes the cylindrical partition body 1 to rise.
6 The relative velocity of the water flow is generated between the outside and the outside, and the pressure difference is caused to suck the water outside the cylindrical partition 16 through the slit hole 15 and the lower end 17 of the opening into the inside, and at the same time, the cylinder rises as the bubble rises. The convection circulation in which water overflows and discharges together with air bubbles through the slit hole 15 on the water surface side above the partitioning body 16 is generated.

Next, an example of the operation of the present invention will be described.
For example, as shown in FIG. 1 and FIG. Space part 1
0, the compressed air is simultaneously supplied with the monopolar reinforcing magnetic field generating means 9.
Pass through. At this time, the compressed air passes through at least two unipolar reinforcing magnetic fields in which the magnetic rings 6 and 7 are fixed to repel each other, so that oxygen in the air is excited and oxygen in the air, which is a stable mixed gas, is excited. Etc. are instantaneously disturbed by a magnetic field, and then easily dissolved in water. Thereafter, the compressed air is diffused in water through the upwardly directed bubble diffusing surface 12 of the bubble diffusing means 5 such as a conical or spherical shape. Therefore, even when the saturation value of dissolved oxygen in water at high water temperature is low and the ability to dissolve oxygen is low, oxygen in the air can be excited to easily dissolve into water, and oxygen dissolved in water can be dissolved. Increases the dissolved amount of water and promotes purification of sewage by activating aerobic bacteria involved in aeration and water purification. In addition, bubble diffusion means 5
Is closed by the bottom plate 11 and diffuses bubbles in the water through the air diffusion surface 12 directed upward, so that oxygen can be well dissolved in the water,
As in the conventional underwater aeration device, it is possible to prevent the function of the air bubble generating portion from being deteriorated due to the occurrence of clogging on the lower surface portion, thereby enabling long-term continuous use.

[0018]

The present invention is configured as described above.
In particular, after the oxygen in the air is excited by passing through at least two monopolar strengthening magnetic fields in which the magnetic ring is fixed to repel each other, the conical or spherical diffusing surface is directed upward. Air bubbles are diffused in the water, so that the stability of oxygen in the air, which is a stable mixed gas, is instantaneously disturbed by the magnetic field and diffused in the water, so that oxygen can be dissolved well into the water. In addition, the function of the air bubble generator due to clogging on the lower surface of the device is prevented from deteriorating as in a conventional underwater aeration device, and long-term continuous use is possible. In addition, as the size of the air supply pipe can be reduced, the output of a compressor and a blower pump for the air supply device can be reduced, and extreme energy saving can be achieved as a whole. The structure can be simple, and can be used, for example, in a vehicle-mounted water tank for transporting live fish.

Further, the bubble diffusion means made of a porous ceramic molded body having any one of a truncated conical shape, a hemispherical shape, a horizontal cylindrical shape, and a spherical shape in which the lower hemisphere is closed,
Since the lower portion of the cylindrical space portion has the conical opening portion which is enlarged as the lower side thereof becomes lower, the thickness width between the diffusing surface and the inner wall of the cylindrical space portion can be appropriately set small, and the air supply means However, even if the pressure is low, the ability to eject air can be sufficiently increased.

Further, the monopole-enhanced magnetic field generating means may be fitted and arranged around the air supply pipe facing the opening end in the cylindrical space of the bubble diffusion means, or externally attached to the air supply pipe immediately above the bubble diffusion means. Or inside the air-supply pipe facing the opening end in the cylindrical space of the bubble diffusion means, and a housing externally attached to the air-supply pipe immediately above the bubble diffusion means. Since the one installed inside is alternately installed, the multiple underwater air diffusers can be used together or the assembly can be changed according to the size of the water tank, and the usability is improved. In addition, the unipolar reinforcing magnetic field generating means of the housing externally attached to the air supply pipe with respect to the uniformly rising bubbles from the bubble diffusion means uniformly rises around the housing because a leakage magnetic field is also generated around the outside of the housing. The bubbles from the bubble diffusion means are also excited by the magnetic field, so that the ability to dissolve in water can be improved.

Since a cylindrical partition body having a plurality of slits formed in a side surface for convective circulation of water is arranged around an underwater air diffuser in a water tank, that is, the cylindrical partition body is caused by an upward flow of bubbles. Water is sucked into the cylindrical partition body through the slit hole due to the pressure difference caused by the relative velocity of the water flow inside and outside the body, and at the same time, the water inside the cylindrical partition body fills the slit hole near the water surface side as the bubbles rise. In order to generate a convection circulation that overflows to the outside via water, convection of water by uniform rise of bubbles, that is, an air-soft effect of water, can be efficiently used, for example, water in a water storage tank or the like. Water quality deterioration due to rot, generation of algae, etc. can be prevented.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal perspective view showing a use state of an underwater air diffuser according to an embodiment of the present invention.

FIG. 2 shows a specific example of the bubble diffusion means.
(A) is an overall sectional view, (b) is an overall plan view, and (c) is an overall sectional view of another specific example.

FIG. 3 is an overall cross-sectional view in which a monopolar reinforcing magnetic field generating means is integrated with the bubble diffusing means.

FIG. 4 is an overall cross-sectional view showing a state in which a monopolar reinforcing magnetic field generation unit using a separate housing is attached to the bubble diffusion unit.

FIG. 5 is an overall cross-sectional view showing a state in which a monopolar reinforcing magnetic field generation unit using a separate housing is assembled between a pair of bubble diffusion units.

FIG. 6 is a cross-sectional view showing a state in which the cylindrical partition body is similarly disposed around an underwater air diffuser in a water tank.

FIG. 7 is a cross-sectional view of an underwater air diffuser showing another embodiment of the present invention.

FIG. 8 is a side view of an underwater air diffuser showing still another embodiment of the present invention.

FIG. 9 is an overall perspective view of a bubble diffusing means showing still another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Underwater diffuser 2 ... Air supply means 3 ... Air supply pipe 4 ... Water tank 5 ... Bubble diffusing means 6 ... Magnetic ring 7 ... Magnetic ring 8 ... Conical opening 9 ... Monopole strengthening magnetic field generating means 10 ... Cylindrical space DESCRIPTION OF SYMBOLS 11 ... Bottom plate 12 ... Air diffusing surface 13 ... Top lid 14 ... Housing 15 ... Slit hole 16 ... Cylindrical partition 17 ... Opening lower end

Claims (8)

[Claims] 1. Excitation of oxygen in air by passing through a monopole-enhanced magnetic field in which magnetic rings are fixed to repel each other, and then through an upwardly directed conical or spherical diffuser surface Underwater aeration method characterized in that air bubbles are diffused in water. 2. A porous member in which a cylindrical space portion connected to the air supply means via an air supply pipe is opened at the center, the lower surface side is closed, and the diffuser surface is directed upward. And at least two monopole-enhanced magnetic field generating means interposed and installed in an air supply path of the bubble diffusing means and fixed in a state in which magnetic rings are repelled from each other. Underwater diffuser. 3. The bubble diffusion means is a porous ceramic molded body having any one of a truncated conical shape, a hemispherical shape, a horizontal cylindrical shape, and a spherical shape in which a lower hemisphere is closed. An underwater aeration device as described. 4. The underwater air diffuser according to claim 2, wherein the bubble diffusing means has a conical opening whose diameter is increased as the lower side of the cylindrical space portion becomes lower. 5. The underwater air diffuser according to claim 2, wherein the monopolar reinforcing magnetic field generating means is fitted and disposed around an air supply pipe facing an opening end in the cylindrical space of the bubble diffusing means. apparatus. 6. The underwater air diffuser according to claim 2, wherein the monopole-enhanced magnetic field generating means is installed inside a housing external to an air supply pipe immediately above the bubble diffusing means. 7. The monopole-enhanced magnetic field generating means is disposed around an air supply pipe facing an opening end in a cylindrical space of the bubble diffusion means, and is externally attached to an air supply pipe immediately above the bubble diffusion means. The underwater air diffuser according to any one of claims 2 to 4, wherein the underwater air diffuser is provided alternately with the one installed inside the housing. 8. The submersible water according to claim 2, wherein a cylindrical partition body having a plurality of slit holes formed in a side surface for convective circulation of water is disposed around an underwater air diffuser in the water tank. A diffuser.