KR101824240B1 - High-density micro-bubble generating device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-density micro-bubble generating apparatus including a gas-dissolving apparatus for micro-bubbling, and more particularly to a gas- The circulating water discharged through the pressure tank generates bubbles in the course of passing through the venturi nozzle, and thereby the micro bubbles are generated so as to generate more efficient high-density microbubbles. Density micro-bubble generating device including a gas dissolving apparatus for generation.
According to an aspect of the present invention, there is provided a method of circulating water, comprising: a storage tank for storing circulating water; a circulating unit for circulating the circulating water stored in the storage tank; and a circulating unit for circulating the circulating water, And a bubble generating unit that receives the dissolved water discharged from the gas dissolving unit and generates high density fine bubbles.

Description

TECHNICAL FIELD [0001] The present invention relates to a high-density micro-bubble generating device including a gas dissolving apparatus for micro-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-density micro-bubble generating apparatus including a gas-dissolving apparatus for micro-bubbling, and more particularly to a gas- The circulating water discharged through the pressure tank generates bubbles in the course of passing through the venturi nozzle, and thereby the micro bubbles are generated so as to generate more efficient high-density microbubbles. Density micro-bubble generating device including a gas dissolving apparatus for generation.

In general, water contains a large amount of oxygen, which can be aquatic plants or animals. If oxygen is insufficient in the water, eutrophication will occur in the water, and water may be contaminated.

That is, when the water contains a lot of oxygen, the organic matter contained in the water is oxidized and decomposed by the oxygen, so that it can be purified by the clean water in the aerobic state. The oxygen in the air can be saturated in the water. If there is a limit to the amount of pollutants introduced into the water, it becomes anaerobic and becomes self-purification because it becomes corrupt.

At this time, water having a high dissolved oxygen amount, which is the amount of oxygen contained in the water, combines sterilizing action like ozone (hydrogen peroxide), so that generation of bad bacteria and decay can be suppressed.

On the other hand, the conventional technology using oxygen in water as described above is mainly used for water purification facilities, farms, and washing machines. In the purification facility, oxygen bubbles are aerated inside the septic tank to activate decomposition of wastewater by oxygen.

In addition, the farms disassemble the feces of sediment or bottom of the fishery, decompose pollutants from feces and feed, sterilize the water, and prevent fish in the farm from being contaminated by germs.

In the washing machine, microbubbles (bubbles) that are micronized in the washing water are supplied to sterilize the laundry. In the washing process or the rinsing process, the microbubbles contact the laundry, and the microbubbles are sterilized by the microbubbles.

In recent years, the microbubbles have been applied to a wide variety of fields such as skin cleansing and massage, as well as health field such as diet effect. Bathtubs and so on.

However, in order to generate micro bubbles as described above, conventionally, a pressurizing pump is generally used.

That is, in order to generate the micro bubbles as described above, micro-sized bubbles can be generated by injecting water and oxygen into the micro bubble generating nozzle or the micro bubble generating device under a pressurized condition.

In order to provide such a pressurized environment, an electric apparatus for driving the pressurizing pump and the pressurizing pump is also indispensable.

Therefore, there is a problem that it is difficult to miniaturize and lighten a product because the micro bubble itself is generated or the micro bubble generated product is weighted with a large volume.

Meanwhile, in the conventional method of generating micro-bubbles for water treatment, two types of micro bubble generating methods are divided into a turning method and a pressing method. In the case of the turning method, negative pressure is formed inside the nozzle, There is a problem that it is difficult to generate minute bubbles having a small size and high density.

Particularly, in recent years, in order to increase the microbubble production efficiency in addition to the microbubble apparatus, a method for dissolving a low solubility gas at a high efficiency has been widely studied.

For example, even if a gas having a very low solubility such as oxygen is supplied to an existing micro-bubble generator, the amount of dissolved gas in the water is relatively small compared to the amount supplied, which makes it difficult to generate effective micro-bubbles.

Therefore, in recent years, in order to increase the dissolution efficiency of a target gas such as a swirl flow chamber or an inline mixer, other auxiliary devices may be connected to the micro bubble generator.

Korean Patent Registration No. 10-298007 Korean Patent Registration No. 10-1292601 Korean Patent Registration No. 10-1045238

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a gas- The object of the present invention is to dissolve the gas with high efficiency and to supply the dissolved water to the compression tank to generate bubbles in the process of passing through the venturi nozzle, thereby generating high density fine bubbles.

The gas dissolving unit is provided with a plurality of diaphragms so that the lower end and the upper end of the gas dissolving unit are opened to allow the circulation water to pass through the passages formed respectively in the upper and lower portions of the diaphragm, thereby extending the residence time of the circulating water dissolved in the gas- And the flow of the fluid is controlled by diaphragms to separate the primary and secondary dissolution steps in the same system, thereby generating high-efficiency dissolved water.

In addition, a spiral mixer chamber is formed in an outlet of the gas-dissolving portion through which the circulating water is discharged, and a plurality of pellets are provided in the spiral-type mixer chamber. By mixing the circulating water flowing through the inlet and the gas sprayed through the membrane disk, And the dissolved water is discharged through the outlet while being subjected to secondary melting, thereby improving the dissolution efficiency of the gas.

According to an aspect of the present invention, there is provided a method of circulating water, comprising: a storage tank for storing circulating water; a circulating unit for circulating the circulating water stored in the storage tank; and a circulating unit for circulating the circulating water, And a bubble generating unit that receives the dissolved water discharged from the gas dissolving unit and generates high density fine bubbles.

Here, a circulation pipe for supplying circulation water to the gas dissolving means is provided at one side of the storage tank, and the circulation pipe is provided with a pump.

The gas dissolving unit includes a main body having an inlet port through which a circulation pipe of the storage tank is connected to one side of the gas dissolving unit and an outlet port formed through the other side of the gas dissolving unit, a membrane disk disposed at a lower end of the main body, And a compressor for supplying gas to the inside of the main body through the through hole.

In this case, a plurality of diaphragms are further provided on the inner side of the body so as to be positioned between the inlet and the outlet, and the diaphragm disposed at one side of the diaphragms is provided with a passage at the lower end thereof. .

Further, a spiral mixer chamber protruding outwardly and communicating with the outlet port is formed in a direction in which the outlet port of the main body is formed, and an installation shaft is provided in the spiral mixer chamber, one side of which is fixed to the partition plate, And a plurality of paddles are provided.

The bubble generator may include a pressure tank which is connected and fixed to an outlet formed in the body of the gas dissolving means, one side of which is fixedly coupled to the pressure tank, and the other side of which is fixed to the storage tank, And a venturi nozzle installed between the recovery pipe and the storage tank.

The venturi nozzle has a linear section diameter D of 3 to 4 mm and a length of 15 to 20 mm.

According to the present invention configured as described above, the circulating water stored in the storage tank is supplied to the gas dissolving portion by the pump, and the gas having a low solubility is dissolved in the gas dissolving portion through the secondary dissolving step, thereby dissolving the gas with high efficiency, The dissolving water is supplied to the compression tank, and bubbles are generated in the process of passing through the venturi nozzle, so that the high-density fine bubbles can be generated.

The gas dissolving unit is provided with a plurality of diaphragms so that the lower end and the upper end of the gas dissolving unit are opened to allow the circulation water to pass through the passages formed respectively in the upper and lower portions of the diaphragm, thereby extending the residence time of the circulating water dissolved in the gas- And the flow of the fluid is controlled by a diaphragm to separate the primary and secondary dissolution steps in the same system, thereby generating highly efficient dissolved water.

In addition, a spiral mixer chamber is formed in an outlet of the gas-dissolving portion through which the circulating water is discharged, and a plurality of pellets are provided in the spiral-type mixer chamber. By mixing the circulating water flowing through the inlet and the gas sprayed through the membrane disk, The dissolved water is discharged through the outlet while being subjected to secondary melting, thereby improving the dissolution efficiency of the gas.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a high-density micro-bubble generating apparatus including a gas dissolving apparatus for generating micro-bubbles according to the present invention;
2A and 2B show a gas dissolving apparatus of the present invention.
3 shows a venturi nozzle of the present invention.
FIG. 4 is a view showing a working relationship of a high-density micro-bubble generator including a gas dissolving apparatus for micro-bubbling according to the present invention; FIG.
5A is a graph showing a bubble size distribution result according to a linear section diameter of a venturi nozzle of the present invention.
FIG. 5B is a graph showing the result of the bubble size distribution according to the length of the straight line of the venturi nozzle of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a high density microbubble generator including a gas dissolving apparatus for microbubbles according to the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a high-density micro-bubble generating apparatus including a gas dissolving apparatus for producing micro-bubbles according to the present invention. FIGS. 2A and 2B are views showing a gas- Fig.

1 to 3, a high density micro-bubble generating apparatus 100 including a gas dissolving apparatus for generating micro-bubbles according to the present invention includes a storage tank 110 for storing circulating water, A gas dissolving unit 310 for mixing and circulating the circulating water circulated by the circulation unit 210 with the gas and a gas dissolving unit 310 for dissolving the circulating water circulating through the gas dissolving unit 310 And a bubble generating unit 410 for supplying high-density minute bubbles.

Although not shown in the figure, the storage tank 110 is provided with a flow meter, a pressure meter, and a viewing window.

Accordingly, it is possible to check the storage tank 110 by various measuring systems installed in the storage tank 110, thereby preventing a safety accident due to a rise in pressure or the like.

The circulation unit 210 includes a circulation pipe 212 to which one side of the circulation unit 210 is coupled and fixed to the storage tank 110 and the other side of which is coupled to and fixed to the gas dissolution unit 310, A pump 214 is provided at a predetermined position.

Accordingly, circulation water stored in the storage tank 110 is supplied to the gas dissolving unit 310 through the circulation pipe 212 by the operation of the pump 214.

The gas dissolving unit 310 includes a main body 312 having an inner space 314 formed therein and an inlet 316 through which one end of the circulation pipe 212 is fixedly coupled to the one end by fixing means. .

The main body 312 has a spiral mixer chamber 318 protruding outward at the other side where the inlet port 316 is formed and an outlet port 319 is formed to communicate with the spiral mixer chamber 318.

The circulating water flowing through the circulation pipe 212 flows into the inside of the main body 312 through the inlet 316 and the introduced circulating water is circulated inside the main body 312, The gas is dissolved while the water and the gas are mixed, and the generated water is discharged through the outlet 319.

The membrane disk 320 has a membrane disk 320 protruding outward from the body 312 at a lower end of the body 312, that is, at a lower end of the inlet 316, And a compressor 322 for supplying the refrigerant.

Accordingly, the compressed gas supplied from the compressor 322 injects the compressed gas into the main body 312 through the membrane disk 320, and the circulating water flowing through the inlet 316 and the compressed gas injected therefrom Thereby causing a vortex phenomenon while countercurrently contacting. This phenomenon causes the dissolution of gas to generate dissolved water, which is discharged through the outlet 319.

Further, a plurality of, preferably, a pair of diaphragms 330 are provided on the front surface of the spiral mixer chamber 318 so as to be spaced apart from each other.

At this time, any one of the pair of diaphragms 330, that is, the diaphragm 330 positioned in the direction of the inlet 316 is installed inside the body 312 so that the lower part is spaced apart from the lower part, and a passage 332a is formed at the lower end And another neighboring diaphragm 330 is provided on the inside of the main body 312 so as to be spaced apart from the upper side and the passageway 332b is formed on the upper side.

Therefore, the dissolved water generated by mixing the circulating water introduced through the inlet 316 and the gas injected through the membrane disk 320 is sequentially passed through the passages 332a and 332b formed by the partition plate 330 The time for residence of the dissolved water in the main body 312 becomes longer in the process of passing the fluid, and the fluid is controlled by the partition plate 330 to separate the primary dissolution step and the secondary dissolution step in the same system, . ≪ / RTI >

A mounting shaft 340 is provided in the spiral mixer chamber 318 of the main body 312 and is fixed to the diaphragm 330 at one side thereof by welding or the like using fixing means. And a plurality of paddles 342 are provided in the second housing 340.

At this time, the paddle 342 coupled to the mounting shaft 340 may be firmly fixed to the mounting shaft 340, and the pressure resistance of the dissolved water discharged around the mounting shaft 340 As shown in Fig.

Therefore, the circulation water and the gas are mixed inside the main body 312 to perform the primary melting, and in the course of passing through the paddle 342, a larger amount of secondary melting water is generated At the same time, the dissolved water is discharged through the outlet 319.

The bubble generator 410 includes a pressure tank 412 connected to the outlet 319 formed in the main body 312.

Therefore, the dissolved water generated inside the main body 312 and discharged through the outlet 319 is supplied to the inside of the pressure tank 412.

A recovery pipe 430 is coupled to the other side of the pressure tank 412, that is, the other side coupled to the outlet 319 of the main body 312 to be able to move the dissolved water to the storage tank 110 Respectively.

Therefore, the dissolved water discharged from the pressure tank 412 is transferred to the storage tank 110 through the recovery pipe 430.

The other end of the recovery pipe 430 is fixedly coupled to the end of the recovery pipe 430, that is, the other end of the recovery pipe 430 fixedly coupled to the pressure tank 412. The other end of the recovery pipe 430 is fixedly coupled to the storage tank 110, A venturi nozzle 420 for generating bubbles is provided.

The venturi nozzle 420 is formed with a first tapered section 422a having a shorter length on the inner side in the direction bound to the return pipe 430 and is connected to the first tapered section 422a, A second tapered section 422c having a long length communicated with the straight section 422b is formed in the other side where the first taper section 422a is formed, .

Accordingly, the dissolved water discharged from the pressure tank 412 moves through the return pipe 430, and the dissolved water is collected at the center in the process of passing through the first tapered section 422a of the venturi nozzle 420 In the process of passing through the straight section 422b and moving to the second tapered section 422c, the dissolved water is sprayed so as to spread widely and supplied to the storage tank 110 in a state where high density fine bubbles are generated.

The operation of the high-density micro-bubble generator according to the present invention will now be described.

FIG. 4 is a diagram showing a working relationship of a high-density micro-bubble generator including a gas dissolving apparatus for micro-bubbles according to the present invention.

As shown in the drawing, the high density micro-bubble generating apparatus 100 including the gas dissolving apparatus for micro-bubbling according to the present invention is configured such that when the pump 214 is operated in a state where the circulating water is filled in the storage tank 110, The circulating water stored in the tank 110 is moved through the circulation pipe 212.

The circulating water flowing through the circulation pipe 212 is supplied to the inside of the main body 312 through the inlet 316 formed in the main body 312 of the gas dissolving unit 310.

At this time, when the circulation water is supplied to the inside of the main body 312, the compressed gas is injected from the compressor 322 into the space 314 of the main body 312 through the membrane disk 320.

As described above, the circulating water supplied to the inside of the main body 312 and the gas injected from the membrane disk 320 are in countercurrent contact with each other to generate a vortex so that mixing of the gas and the circulating water is promoted, So that the gas is dissolved.

When the circulating water flowing into the main body 312 and the gas injected through the membrane disk 320 are mixed and dissolved in a primary state, the lower passageway 332a of the diaphragm 330 installed in the main body 312, To the spiral mixer chamber 318 through the upper passageway 332b of the diaphragm 330. [

At this time, the dissolved water primarily dissolved in the inside of the main body 312 moves to passages 332a and 332b formed on the upper and lower portions of the plurality of partition plates 330 in the process of moving to the spiral mixer chamber 318 As a result, the moving speed of the first dissolved molten water is slowed down, and the residence time in the first molten zone becomes longer, so that the molten water is mixed while the circulating water and the gas are mixed for a longer period of time.

The dissolved water passing through the partition plate 330 and moving to the spiral mixer chamber 318 is discharged to the outside through the outlet 319 and the discharged dissolved water is supplied to the compression tank 412.

At this time, the dissolving water discharged to the outside through the outlet 319 passes through the plurality of paddles 342 installed in the spiral mixer chamber 318, And is discharged through the outlet 319 in a state in which the secondary melting is divided into smaller portions while being rotated by the contact.

The dissolved water secondaryly dissolved through the outlet 319 of the main body 312 is supplied to the pressure tank 412 and the dissolved water supplied to the pressure tank 412 is moved through the return pipe 430 When passing through the Venturi nozzle 420, the high-density fine bubbles are generated while being discharged under a strong pressure, and are moved to the storage tank 110.

At this time, the dissolved water discharged from the pressure tank 412 and passed through the return pipe 430 is collected at the center in the process of passing through the first tapered section 422a of the venturi nozzle 420, and then flows into the straight section 422b And the dissolved water having passed through the straight section 42b is diffused as it passes through the second tapered section 422c, so that fine bubbles of high density are generated in the process of being sprayed.

The high density microbubble generator 100 including the gas bubble generating microbubble generator according to the present invention is supplied with the circulating water stored in the storage tank 110 to the gas blowing unit 310, The circulating water supplied to the compressor 322 is mixed with the compressed gas supplied from the compressor 322 to perform primary melting. At this time, the moving time of the dissolved water primarily dissolved by the plurality of diaphragms 330 is stagnated, The dissolution is performed.

The dissolved water subjected to the primary melting passes sequentially through the diaphragm 330 and flows through the outlet 319 into the pressure tank 412 in the state where the secondary melting is performed by the paddle 342 provided in the helical mixer chamber 318. [ The dissolved water supplied to the pressure tank 412 is transferred through the recovery pipe 430 and the high-density minute bubbles are generated in the process of discharging the dissolved water through the venturi nozzle 420 .

Therefore, when the gas dissolving unit 310 is disposed at the front end of the pressure tank 412, the gas dissolving unit 310 dissolves in the gas dissolving unit 310 to increase the dissolving rate of the gas, High-density fine bubbles are generated with high efficiency as the dissolving water that has been supplied from the pressure tank 412 through the return pipe 430 is passed through the venturi nozzle 420.

Meanwhile, FIG. 5A is a graph showing the bubble size distribution according to the linear section diameter of the venturi nozzle of the present invention, and FIG. 5B is a chart showing the bubble size distribution result according to the linear section length of the venturi nozzle of the present invention.

As shown in the figure, it can be seen that it is optimal to generate micro bubbles when the diameter D of the gentle line section 422b of the venturi nozzle 420 is 3 to 4 mm.

At this time, when the diameter D of the straight section 422b is 2 mm or less and when the diameter D is 5 mm or more, the influence on the bubble size distribution is relatively low.

In addition, it can be seen that the optimum condition for microbubble generation is obtained when the length L of the straight line section 422b is 15 mm to 20 mm.

That is, when the diameter D of the straight section 422b is 3 to 4 mm, the D ₅₀ is 54.98 to 61.19 μm (D3L15 and D4L15), and the bubble fractions of 50 μm or less are 0.326 and 0.345 (D3L15 and D4L15) The D ₅₀ of the nozzle having the length L of the straight section 422b of 15 mm to 20 mm was 49.40-61.19 탆 and the bubble fraction of 50 탆 or less was 0.384-0.447, and the micro bubble was relatively stable As shown in FIG.

The micro bubble generation performance according to the optimal operating conditions of the venturi nozzle 420, that is, the micro bubble generation and the specifications of the venturi nozzle 420 as described above, is described in detail in "Micro bubble generation according to the specification of Venturi nozzle Characteristics Evaluation, Journal of the Korean Academic Society of Technology, Vol. 16, No. 9, pp.6397 ~ 6402, 2015.09.30).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

100: high-density micro-bubble generator 110: storage tank
210: circulation unit 212:
214: Pump 310: Gas dissection
312: main body 314:
316: Inlet port 318: Spiral mixer chamber
319: Outlet 320: Membrane disk
322: Compressor 330: diaphragm
322a, 322b: passage 340: mounting shaft
342: paddle 410: bubble generator
412: Pressure tank 420: Venturi nozzle
422a: a tapered section 422b: a straight section
422c: second tapered section 430:

Claims (7)

A storage tank in which the circulation water is stored,
A circulation unit for circulating circulation water stored in the storage tank,
A gas dissolving unit for mixing and dissolving the circulating water circulated by the circulating unit with the gas,
And a bubble generating unit that receives the dissolved water discharged from the gas dissolving unit to generate high density fine bubbles,
The gas dissolving unit includes a main body having an inlet port through which a circulation pipe of the storage tank is connected to one side of the gas dissolving unit and an outlet port formed through the other side of the gas dissolving unit and a membrane disk disposed at a lower end of the main body, And a compressor for supplying the compressed gas to the inside of the main body through the membrane disk, wherein the compressed gas is mixed with the circulating water to dissolve first,
A plurality of diaphragms are disposed on the inner side of the body so as to be positioned between the inlet and the outlet. The diaphragm located at one side of the plurality of diaphragms is provided with a passage at the lower end thereof. The adjacent diaphragm is provided with a passage at the upper end thereof ,
A spiral mixer chamber protruding outwardly in a direction in which the outlet port of the main body is formed and communicating with the outlet port is formed and an installation shaft is provided in the spiral mixer chamber and one side of the installation shaft is fixed to the partition plate, A plurality of paddles provided to be rotated by a pressure resistance of water are provided so as to perform secondary melting,
Wherein the bubble generating unit is provided with a pressure tank which is connected and fixed to an outlet formed in the body of the gas dissolving means, one side of which is fixedly coupled to the pressure tank and the other side of which is fixed to the storage tank, And a venturi nozzle installed between the pipe and the storage tank. The apparatus for generating fine bubbles according to claim 1,
The method according to claim 1,
A circulation pipe for supplying circulation water to the gas dissolving means is provided at one side of the storage tank,
Wherein the circulation pipe is provided with a pump. ≪ RTI ID = 0.0 > 8. < / RTI >
delete delete delete delete The method according to claim 1,
Wherein the venturi nozzle has a linear section diameter D of 3 to 4 mm and a length L of 15 to 20 mm.

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