KR101787835B1

KR101787835B1 - A generating micro bubble

Info

Publication number: KR101787835B1
Application number: KR1020150150584A
Authority: KR
Inventors: 지현숙
Original assignee: 주식회사 일성; 지현숙
Priority date: 2015-10-28
Filing date: 2015-10-28
Publication date: 2017-10-19
Also published as: KR20170049323A

Abstract

The present invention relates to a method and apparatus for generating a large amount of ultrafine air bubbles by a shearing force caused by collision with a dissolved air flotation (DAF) during passage of mixed water in a state where air and water are mixed through a bubble generating tank. A bubble generating unit connected to the inlet pipe and having a space in which microbubbles are generated to generate microbubbles by receiving the mixed water; And a discharge pipe for discharging mixed water containing microbubbles generated in the bubble generating means to the outside, the microbubble generator comprising: The bubble generating means may include a first generating vessel connected to the inlet pipe and having a bubble generating space therein for generating microbubbles after receiving the mixed water, and a second generating vessel disposed in a position spaced apart from the first generating vessel A mixed water containing microbubbles generated in the first generation tank and connected to the discharge pipe to generate microbubbles to generate microbubbles, A plurality of mixing chambers arranged in the bubble generation space of the first generation tank to be discharged to the connection pipe and capable of colliding with each other during the movement of the mixed water, A micro bubble generating device comprising collision members is provided.

Description

[0001] The present invention relates to a micro bubble generator,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a micro bubble generating device for generating micro bubbles which are micro-bubbles having a micro-unit diameter, and more particularly, Micro bubbles can be generated by a shear force due to collision with a floating air flotation (DAF), thereby making it possible to economically generate micro bubbles and to improve microbubble generation efficiency through structural simplification and miniaturization &Lt; / RTI >

In general, micro bubbles are ultrafine bubbles which can not be confirmed by eyes of 5 μm (micrometer, or micron, 1 μm = 0.001 mm) or less. The size of the micro bubbles is 1 / 2,000 of that of normal bubbles. 1) 40KHz ultrasonic waves are generated, 2) a high sound pressure of 140db is generated, and 3) an instantaneous high temperature of 4,000-6,000 degrees is generated.

That is, the normal bubbles rise in the water and rupture on the surface, but the micro bubbles are reduced by the pressure in the water and generate various energy and disappear.

Such microbubbles are mainly generated when water and air are vigorously rotated by ultra-fine bubbles.

Such microbubbles are utilized in various fields by physical and chemical properties such as gas dissolution effect, self-pressurization effect, and charging effect, and they are used for various cultures and hydroponics in fisheries and agriculture, In medical field, it is used for precision diagnosis, and in various fields, it is used in physical therapy, high-purity water treatment, environment device and the like.

In other words, the field of use is wide ranging from hot spring bath to cancer diagnosis, it is known that it has excellent sterilization effect as well as regenerating skin.

The micro bubbles may be generated by various methods such as a circulating liquid flow type, a state liquid type, an ejector type, a vanishing type, a pressure dissolving type, an ultrasonic type, an electrolysis type, and a micro pore filter type.

In order to generate microbubbles through the various types of microbubble generators, microbubbles are generated by converting a gas into a microcavity by supplying a liquid (supply water) mixed with a gas.

The process of converting the supply water to the microfluidic system is performed through the process of separating and compressing the supply water containing the bubbles while passing through the micropilot of the generation means provided with the microfilm.

As described above, there is Korean Patent Registration No. 10-1146040 (name: micro bubble generator) as one of micro-bubble generator devices for generating micro bubble. As described in the publication A bubble generating chamber provided with a water inlet for water inflow and an air inlet for discharging air and a discharge port for discharging air; a water supply port provided between the water inlet and the air inlet and the discharge port of the bubble generation chamber, A rotary disk provided with a plurality of induction holes through which water introduced through an inlet and an air inlet is guided; and a water supply device for supplying water and air introduced through the induction hole in an outer direction And a plurality of water droplets which are protruded in the direction of the rotating disk so as to stir water and air in accordance with the rotation of the rotating disk Banpyeon consists of a fixed disk having that.

As a result, water and air are stirred while being frictioned with the agitating pieces, and friction between the agitating pieces is made while passing through the jig jack. Therefore, water and air are strongly stirred and pressed at the same time.

On the other hand, there is DF (Dissolved Air Flotation) (DAF) as a method for generating micro bubbles, and the dissolved air flotation (DAF) is a method of sufficiently dissolving air in water at a high pressure, The water which has been decompressed again in the water is formed into fine bubbles as much as the supersaturated air and binds to the floc in the treated water. The bubble-floc conjugate quickly rises to the water surface and the solid- Water treatment technique.

Here, floc refers to a suspension or solid suspension in which solid fine particles are dispersed, and solid fine particles aggregate with each other to form a larger aggregate.

Korean Patent Registration No. 10-0845785 (titled "micro-bubble generator and micro-bubble generator") describes a micro-bubble generator in which a dissolved air flotation method is applied. As described in the publication, A pump to mix; And a mixing chamber for passing a mixture of the gas and the liquid fed from the pump and for mixing the gas and the liquid and generating a predetermined internal pressure and a flow velocity inside the mixing chamber, Wherein the inlet pipe is connected to the inlet of the mixing chamber and extends to the bottom of the inner chamber, and the inlet chamber of the mixing chamber is connected to the inlet chamber of the mixing chamber, An outlet pipe connected to the outlet of the outer chamber extends along the spaced space between the inner chamber and the outer chamber to the vicinity of the bottom of the outer chamber.

1. Korean Patent Registration No. 10-1146040 2. Korean Patent Registration No. 10-0845785

However, the conventional micro bubble generating devices as described above have a problem in that the structure is complicated and productivity is low, which is uneconomical.

In addition, there is a problem that miniaturization is difficult and its use is limited.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, DAF) and a shear force due to collision, thereby enabling a micro bubble generator to be economically improved in terms of structural simplification and miniaturization, and capable of improving the generation efficiency of micro bubbles.

According to another aspect of the present invention, there is provided a micro bubble generator comprising: an inlet pipe for introducing mixed water of water and air through an external pump; There is provided a micro bubble generator comprising a bubble generating means having a space in which a micro bubble is generated so as to generate micro bubbles and a discharge tube for discharging mixed water containing micro bubbles generated in the bubble generating means to the outside ; The bubble generating means may include a first generating vessel connected to the inlet pipe and having a bubble generating space therein for generating microbubbles after receiving the mixed water, and a second generating vessel disposed in a position spaced apart from the first generating vessel A mixed water containing microbubbles generated in the first generation tank and connected to the discharge pipe to generate microbubbles to generate microbubbles, A plurality of mixing chambers arranged in the bubble generation space of the first generation tank to be discharged to the connection pipe and capable of colliding with each other during the movement of the mixed water, Collision members; An outlet through which the mixed water is discharged from the inflow pipe extends from the inside of the generation tank to the vicinity of the bottom so that the mixed water discharged through the outlet collides with the bottom surface of the generation tank, To be discharged; The impingement members are formed of a plate shaped plate having a plurality of through holes through which the inflow pipe is arranged to pass and a plurality of divided spaces through which the mixed water is divided and passed through while the mixed water moves while colliding with each other And an impact plate.

The above-mentioned impingement plate is characterized in that the branching space is formed through an interval between the incision pieces formed by being cut in the inner direction from the outer circumferential surface.

In the microbubble generator of the present invention, the supersaturated air inside the inflow pipe is depressurized in the first generation tank, and a large amount of the air bubbles is generated by the Dissolved Air Flotation (DAF) The microbubbles are generated through collision with the impingement plate and the efficiency of generating microbubbles is further improved through the second generation tube. And it can be economically provided through miniaturization.

1 is a schematic view showing a micro bubble generator according to an embodiment of the present invention,
FIG. 2 is a schematic plan view showing an example of a generation tank applied to the microbubble generator according to the present embodiment,
3 is a schematic view showing a collision member applied to the microbubble generator according to the present embodiment,
Fig. 4 is a schematic view showing the use state of the microbubble generator according to the embodiment. Fig.
5 is a schematic view showing a microbubble generator according to another embodiment of the present invention.

Hereinafter, a micro bubble generator according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more fully describe the present invention to those skilled in the art. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

1 to 4 are diagrams showing a micro bubble generator according to an embodiment of the present invention. In the micro bubble generator 1 according to the present embodiment, water and air A bubble generating means 4 connected to the inflow pipe 3 and having a space for generating micro bubbles therein to generate a micro bubble by receiving the mixed water, , And a discharge pipe (5) for discharging mixed water containing micro bubbles generated in the bubble generating means (4) to the outside.

That is, the bubble generating means 4 reduces the mixed water supplied through the inflow pipe to generate a large amount of ultrafine air bubbles by the above-described dissolved air flotation (DAF) do.

In the micro bubble generator 1 according to the present embodiment, the bubble generator 4 is connected to the inflow pipe 3 and receives the mixed water. After the bubble generator 4 receives the mixed water, A first generating chamber 41 having a space inside the first generating chamber 41 and a second generating chamber 41 disposed at a position spaced apart from the first generating chamber 41 and spatially connected through a connecting pipe 6, A second generation tank 42 connected to the discharge pipe 5 and having a space therein for discharging the mixed water containing microbubbles so as to generate microbubbles by receiving mixed water containing the microbubbles generated, The mixed water introduced from the inflow pipe 3 is disposed in the bubble generating space of the first generation tank 41 discharged to the connection pipe 6, And includes a plurality of collision members 43 Achieved.

That is, mixed water, in which air and water are mixed through the pump 2, is firstly generated in the first generation tank 41 through a depressurization process, and through the collision through the collision member 43 The microbubbles are generated secondarily by the shear force generated and the microbubbles are generated in the second generating chamber 42 in a tertiary manner so that the microbubbles can be economically provided through structural simplification and miniaturization, The generation efficiency is further improved.

The inner diameter of the inflow pipe 3 has a smaller diameter than that of the first generation tank 41 so that the water pressure of the mixed water moving in the inflow pipe 3 is reduced to the first generation tank 41 The water pressure of the mixed water is preferably smaller than that of the mixed water.

As a result, the air supersaturated through the inflow pipe 3 is supersaturated through the reduced pressure in the first generation tank 41 to form micro bubbles, thereby generating micro bubbles.

In the pressurization tank 1 for a micro bubble generator according to the present embodiment, the first generation chamber 41 and the second generation chamber 42 are spatially connected through the connection pipe 6, Respectively.

That is, it is most preferable that the first generation chamber 41 and the second generation chamber 42 are spaced apart from each other and occupy independent spaces, and are disposed in parallel in the horizontal and vertical directions.

An outlet through which the mixed water is discharged from the inflow pipe 3 extends from the inside of the first generation tank 41 to the vicinity of the bottom so that mixed water discharged through the outlet is discharged to the bottom of the first generation tank 41 So as to be radially ejected in the direction of the inner wall surface of the first generation tank 41. [0050]

That is, the mixed water discharged through the outlet collides with the bottom surface of the first generating tank 41 and is discharged in the direction of the inner wall surface while contacting the bottom surface, and collides with the inner wall surface to form turbulence or vortex, The micro bubble is generated by applying the shear pressure for the micro bubble.

It is preferable that the connection pipe 6 allows the mixed water to flow in the direction toward the second generation tank 42 from the inner upper end of the first generation tank 41, 3 is maximized and the mooring distance of the mixed water is maximized within the first generation tank 41 to maximize the micro generation efficiency.

The inlet for introducing the mixed water from the outlet pipe 5 extends from the inside of the second generator tank 42 to the vicinity of the bottom so that the outlet for discharging the mixed water from the connecting pipe 6 is maximized Thereby maximizing the mooring time of the mixed water in the second generation tank 42, thereby increasing the micro generation efficiency.

In the micro bubble generator according to the present embodiment, the collision members 43 are formed with through holes 431 through which the inflow pipe 3 is inserted while being moved, And an impingement plate 433 formed of a plate-shaped plate having a plurality of branch spaces 432 that are formed to pass through the openings 431 and 432. The impingement plate 433 is formed by cutting It is most preferable that the branching space 432 is formed through an interval between the incisions 434.

It is preferable that the impingement plate 433 is formed in the shape of a 'disc', and it is most preferable that the impingement plate 433 is disposed in the first generation tank 41 in a direction perpendicular to the longitudinal direction of the first generation tank 41 .

It is preferable that the discrete pieces 434 have a curved surface inclined from one end to the other end so that the mixed water flowing into the branched space 432 branches into a vortex form and passes through the branched space 432 .

Accordingly, as the mixed water is injected into the generation space of the micro bubbles while having a vortex shape, the contact efficiency of the residence time and the shearing pressure in the micro bubble generation space is remarkably increased to improve the generation efficiency of micro bubbles in the occupied space .

It is preferable that the impingement plate 433 is welded to the outer circumferential surface of the inflow pipe 3 through the through hole 431. In this case, It is most preferable that they are welded and fixed at a position where they are disposed inside the one generation generating chamber 41 with a space therebetween.

The microbubble generator 1 according to this embodiment mixes water and air from the outside through the pump 2 and supplies the mixed water to the first generation tank 41 through the inflow pipe 3, The microbubbles are first generated through the dissolved air flotation method and then microbubbles are generated secondarily through collision with the impingement plate 433, 42 to generate microbubbles in a tertiary manner, and then discharged through the discharge pipe 5 to be used in an unillustrated use place.

In the micro bubble generator 1 according to the present embodiment, mixed water flowing from the pump 2 is transferred in a vortex form between the inlet pipe 3 and the pump 2, It is preferable that a mixing cylinder 7 to be supplied to the pipe 3 is placed.

That is, it is most preferable that the mixed water supplied to the inflow pipe 3 through the mixing tube 7 has a vortex shape.

On the other hand, in the mixing tube 7, a portion of the mixing tube 7 connected to the inflow pipe 3 gradually decreases in inner diameter, thereby increasing the water pressure and flow rate of the mixed water.

5 is a view showing a micro bubble generator according to another embodiment of the present invention. In the micro bubble generator 1 according to the present embodiment, the connection pipe 6 is connected to a discharge port Of the second generation tank 42 is extended from the inside of the second generation tank 42 to the vicinity of the bottom so that the mixed water discharged through the discharge port collides with the bottom surface of the second generation tank 42, The inlet of the discharge pipe 5 may be positioned in the vicinity of the upper end of the second generation tank 42 so as to maximize the separation distance from the discharge port of the connection pipe 6. In this case, So that the mooring time of the mixed water in the second generation tank 42 is maximized, thereby increasing the micro generation efficiency.

At this time, the inner diameter of the connection pipe 6 is smaller than the inner diameter of the second generation tank 42, so that the water pressure of the mixed water moved inside the connection pipe 6 is reduced, 42 of the mixed water.

As a result, the air supersaturated through the connection pipe (6) is supersaturated through the reduced pressure in the second generation tank (42), and air is formed into fine bubbles to generate microbubbles.

It is preferable that a plurality of the impact members 43 are fixed on the outer circumferential surface of the connection pipe 6 with an interval therebetween so that the outlet pipe 5 is connected to the outlet of the connection pipe 6. [ The collision with the impingement plate 433 increases the efficiency of generating micro bubbles.

Therefore, overall microbubbles are generated more smoothly.

As described above, in the microbubble generator 1 according to the present embodiment, the supersaturated air inside the inflow pipe 3 is depressurized in the first generation tank 41, A large amount of ultrafine air bubbles are generated by the Dissolved Air Flotation (DAF), microbubbles are generated through collision with the impact plate 433, So that bubbles are generated.

While the present invention has been described with reference to the exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the examples disclosed in the present invention are not intended to limit the scope of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: Pressurizing tank 2: Pump
3: inlet pipe 4: means for generating
41: first generation group 42: second generation group
43: collision member 431: penetrating hole
432: branching space 433: collision plate
434: Section Revision 5:
6: Connector 7: Mixing tube

Claims

An inflow pipe (3) for introducing mixed water of water and air from the outside through the pump (2); A first generation chamber 41 connected to the inlet pipe 3 and having a bubble generating space for receiving the mixed water to generate a micro bubble, the outlet of the inlet pipe being extended to the vicinity of the bottom, (41) which are spaced apart from each other and which are spatially connected to each other through a connection pipe (6) and which are spaced apart from each other with a space inside to generate microbubbles therein, A second generation tank 42 which is supplied with mixed water containing microbubbles to generate microbubbles and discharges mixed water containing microbubbles and a second generation tank 42 which is disposed in the bubble generating space of the first generation tank 41 A bubble generating means (4) having a plurality of collision members (43) arranged such that the mixed water collides with each other during movement; And a discharge pipe (5) for discharging mixed water containing microbubbles generated in the bubble generating means (4) to the outside, the microbubble generator comprising:
The impact members (43)
Shaped plate having a plurality of divided spaces 432 through which the mixed water is divided into a plurality of portions while the mixed water moves while colliding with the mixed water, And a collision plate 433,
The impingement plate (433)
And the branching space is formed through a gap between the discrete pieces 434 formed in the inner direction from the outer circumferential surface;
The incisions 434,
To have a sloped surface from one end to the other;
The impingement plate (433)
Through the through hole (431) to the outer circumferential surface of the inflow pipe (3);
Between the inflow pipe (3) and the pump (2)
A mixing cylinder (7) for transferring the mixed water introduced from the pump (2) in the form of a vortex and supplied to the inlet pipe (3) is placed;
The connection pipe (6)
An outlet through which mixed water is discharged extends from the inside of the second generation tank 42 to the vicinity of the bottom;
The inlet of the discharge pipe (5)
Is located near the upper end of the second generation tank (42) so as to maximize the separation distance from the outlet of the connection pipe (6).

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