KR20210081120A - Apparatus for generating Nano-bubble water - Google Patents

Abstract

The present invention relates to a nanobubble water generation apparatus which mixes microbubbles through additional circulating to finely crush and pressurize the microbubbles to form nanobubbles, thereby supplying nanobubble water with an increased amount of dissolved oxygen while reducing oxygen consumption. To this end, the nanobubble water generation apparatus comprises: a mixing pump unit (1) mixing oxygen with water supplied from the outside through a suction pipe (41) to generate microbubble water and applying pressure to the microbubble water to supply the pressurized microbubble water; a mixing tank unit (2) including an inner space (21) for mixing oxygen with the microbubble water supplied from the mixing pump unit (1) to generate nanobubble water and a nanobubble water discharge pipe (22) for discharging the generated nanobubble water to the outside; and an oxygen tank unit (3) for supplying the oxygen to the mixing pump unit (1) and the mixing tank unit (2).

Description

Nano-bubble water generating device {Apparatus for generating Nano-bubble water}

The present invention relates to an apparatus for generating nano-bubbled water, and more specifically, when bubble water with micro-sized bubbles is supplied to a predetermined level in the mixing tank unit, it is further mixed while circulating through the mixing tank unit and the mixed pump unit to further mix microbubbles. It relates to a nano-bubble water generating device capable of forming nano-sized bubbles by crushing and pressing, thereby reducing oxygen consumption and supplying nano-bubble water with an increased dissolved oxygen amount.

Microbubbles refer to ultrafine bubbles that exist in a micro-to-nano size in a liquid such as water. These microbubbles have a wide interfacial area as the size decreases, gas solubility is increased, bubble density is improved, free radicals are generated, and sterilization is improved.

Micro (10 ^-6 m) bubbles generally refer to bubbles with a diameter of 100 μm or more, and unlike general bubbles because of their small diameter, the effect of buoyancy is low and the rate of rise is slow, so it has the advantage of being able to stay in water for a long time. When the diameter is further reduced compared to the microbubble and has a diameter smaller than 1㎛ (1000nm), it becomes a nanobubble. A nanobubble is an ultrafine bubble that cannot be seen with the human eye. In addition to the advantages of microbubbles, It has a significant oxidizing power by generating free radicals while dissipating in it, so it has excellent sterilization power and has superior decomposition ability for difficult-to-decompose chemicals.

Therefore, development of an apparatus and process for more effectively generating nanobubbles by the above-described characteristics is being actively conducted, and the field of application thereof is also gradually expanding.

In particular, many attempts have been made to utilize so-called nanobubble water containing nanobubbles in agriculture and fishery.

In fact, when nanobubbles are used in the agricultural field, penetration of nanobubbles into plant roots can be made smoothly, so that they can be easily established in the roots. In addition, this can have a positive effect on the desirable growth of plants by properly mixing oxygen and carbon. In addition, in the fishery field, even if a separate oxygen supply device is not provided, oxygen can be smoothly supplied to the fish being cultured, and foreign substances, bacteria, and bacteria in the gills can be eradicated.

In particular, nanobubble water is utilized in the field of aquaponics, which combines fish aquaculture and hydroponic cultivation of plants to grow fish and crops together and harvest them. The organic matter generated by the plant is used as nutrients for plants, and the clean water remaining after the plant absorbs nitrogen is returned back to the tank to be used for fish farming, so high nanobubble density, purity, and dissolved oxygen are required. There is a need for the development of a device capable of efficiently generating nano-bubble water that can do this.

Korean Patent Publication No. 10-2019-0031012

The present invention has been devised to meet the needs of the art described above,

An object of the present invention is to provide an apparatus for effectively and efficiently generating nanobubble water containing nanobubbles of high purity by controlling whether or not water is circulated according to the level of water stored in the mixing tank unit 2 .

In order to achieve the above object, the nano-bubbled water generating device according to the present invention is a micro-bubbled water by mixing oxygen with water supplied through a suction pipe 41 from the outside, and applying pressure to the micro-bubbled water to supply it. mixing pump unit (1); An inner space 21 for generating nanobubble water by mixing oxygen with the microbubble water supplied from the mixing pump unit 1; is formed, and nanobubble water for discharging the generated nanobubble water to the outside Discharge pipe (22); having a mixing tank unit (2); and an oxygen tank unit (3) for supplying oxygen to the mixing pump unit (1) and the mixing tank unit (2).

In addition, the mixing pump unit 1 is characterized in that it is a multi-stage pump consisting of a 5 or 6 stage mixing pump.

In addition, the mixing pump unit 1 is characterized in that the pump including the mixer impeller is arranged at the last stage.

In addition, the mixing tank part (2) communicates with the suction pipe (41) and a circulation pipe (43) for moving a part of the generated nanobubble water to the mixing pump part (1); and the mixing pump part (1) and a microbubble water transfer pipe 42 communicating with the mixing pump unit 1 to move the microbubble water generated from the mixing pump unit 1 to the mixing tank unit 2 .

On the other hand, the circulation pipe 43 and the microbubble water transfer pipe 42 are spaced apart from each other on both sides of the mixing tank part (2).

In addition, the microbubble water moving pipe 42 includes an upward pipe 421 extending upwardly from the mixing pump unit 1; a bifurcation point 424 branching in two directions from the uppermost end of the upward pipe 421; a microbubble water supply pipe 422 extending from the branch point 424 to the mixing tank part 2; and a microbubble water discharge pipe 423 extending outwardly from the branch point 424 to discharge a part of the microbubble water.

In addition, at least one of the respective tubes is characterized in that it comprises a valve (5).

In addition, the valve 5 is characterized in that it is a solenoid valve or a check valve.

Meanwhile, the nano-bubble water discharge pipe 22 extends upward from the inner bottom surface of the mixing pump unit 1 and communicates with the outside.

In addition, the mixing tank part (2) is characterized in that it further includes a water level sensor for measuring the water level in the inner space (21).

In addition, the oxygen tank unit 3 includes a first high-pressure hose 31 for supplying oxygen to the mixing pump unit 1 .

In addition, the oxygen tank part 3 further includes a second high-pressure hose 32 for supplying oxygen to the mixing tank part 2, and the second high-pressure hose 32 is the mixing tank part. (2) formed in the upper surface of the oxygen input hole (23); characterized in that communication with.

By adopting the above configuration, the nano-bubble water generating device according to the present invention can generate nano-bubbled water capable of maximizing the amount of dissolved oxygen in the water without bubbles easily floating on the surface of the water.

In addition, there is an effect of reducing oxygen consumption and water consumption by generating nanobubble water while circulating water as needed.

1 is a schematic diagram schematically illustrating an apparatus for generating nano-bubbles according to the present invention.
2 is a diagram schematically illustrating a process in which nano-bubbles are generated in the mixing tank unit 2 of the apparatus for generating nano-bubbles according to the present invention.
3 is a circuit diagram schematically illustrating a fluid flow direction in a nanobubble water generating device according to the present invention.
4 is a diagram schematically illustrating a process of generating nanobubble water through the nanobubble water generating apparatus according to the present invention.

The inventor can select or define appropriate terms or words in describing the invention, and in this case, the terms or words used are not limited to the meanings commonly used, but rather the intention of the inventor is taken into account. It should be interpreted to conform to the technical idea embodied in the invention.

Accordingly, the terms or words used in the present specification and claims cannot be regarded as being limited to their commonly used meanings. The above-described content is merely a preferred embodiment of the present invention, and will not represent or limit all of the present technical idea, so there may be examples corresponding to easily replaceable elements and equivalent ranges from the standpoint of those skilled in the art.

Hereinafter, an apparatus for generating nanobubble water according to the present invention will be described with reference to the drawings based on the above-mentioned principle. In addition, in the present specification, an upward direction or an upward direction refers to a direction away from the ground to the air, and a downward direction or a downward direction refers to a direction from the air toward the ground.

1 is a schematic diagram schematically illustrating an apparatus for generating nano-bubbles according to the present invention.

Referring to FIG. 1 , the apparatus for generating nanobubble water according to the present invention may include a mixing pump unit 1 , a mixing tank unit 2 , and an oxygen tank unit 3 .

The mixing pump unit 1 is configured to produce microbubble water by primarily mixing oxygen with water sucked from the outside. At this time, the water to be contained in the microbubbles may be sucked from the outside through the suction pipe 41 connected to the mixing pump unit 1, and the suction pipe 41 is a suction pump separately provided to suck water from the outside if necessary. can be connected with

The water moved to the mixing pump unit 1 contains oxygen by the mixing pump, thereby generating microbubbles. At this time, oxygen may be supplied from the oxygen tank unit 3 .

The mixing pump unit 1 may be configured as a multi-stage pump including a plurality of mixing pumps, preferably a 5-stage or 6-stage mixing pump. Also, the mixing pump of the last stage may be a mixing pump including a mixer impeller. That is, by arranging the mixing pump including the 4 to 5 stage suction impeller and the mixing pump including the mixer impeller, it is possible to configure the 5 to 6 stage mixing pump assembly (the mixing pump unit 1 ). If it is not configured in this way, the efficiency of generating microbubbles is reduced, and as will be described later, it may be difficult to properly mix the circulating nanobubble water.

In more detail, as will be described later, the mixing pump unit 1 is connected to the oxygen tank unit 3 through the first high-pressure hose 31, and oxygen is directly injected into the last stage of the multi-stage pump to cause cavitation (cavitation). , cavitation) may occur. Through this, bubbles are efficiently generated in the water, and ultimately, it is possible to efficiently generate microbubble water and even nanobubble water.

As described above, the mixing pump unit 1 may generate microbubbles by injecting oxygen into water to generate microbubble water. At this time, the mixing pump unit 1 pressurizes water at the same time. By controlling the pressure applied to the water and the amount of oxygen sucked into the mixing pump unit 1, the mixing tank unit 2 controls the generation of microbubbles and at the same time ), the generated microbubble water can be sent and received.

The mixing tank unit 2 is configured to generate nanobubble water by pressurizing and mixing while adding oxygen to the microbubble water supplied from the mixing pump unit 1 . The mixing tank part 2 has an inner space 21 for generating nano-bubble water while mixing microbubble water and oxygen inside, and a nano-bubble water discharge pipe 22 for discharging the generated nano-bubble water to the outside. ) may be provided.

The mixing tank unit 2 communicates with the suction pipe 41 and communicates with the circulation pipe 43 for moving a part of the nanobubble water generated by the mixing pump unit 1 to the mixing pump unit 1 and the mixing pump unit 1 to communicate with the mixing pump unit ( A microbubble water transfer pipe 42 for moving the microbubble water generated from 1) to the mixing tank unit 2 may be provided.

At this time, it is preferable that the microbubble water moved from the mixing pump unit 1 to effectively generate the nanobubble water is introduced into the upper part of the mixing tank unit 2 and moved downward while rotating, as shown in FIG. 2 . .

To this end, the circulation pipe 43 and the microbubble water moving pipe 42 are arranged spaced apart on both sides of the mixing tank part 2 as shown in FIG. 1 , and the microbubbled water moving pipe 42 is the circulation pipe ( 43), it is preferable to be connected to the mixing tank part 2 from the upper side. That is, the circulation tube 43 and the microbubble water transfer tube 42 face each other on opposite sides, but have different heights, and the microbubble water transfer tube 42 may be located above the circulation tube 43 . In this case, the microbubble water transfer pipe 42 connected to the mixing tank unit 2 may be a microbubble water supply pipe 422 , as will be described later among the configurations of the microbubble water transfer tube 42 . As such, in the configuration of the microbubble water moving pipe 42, the microbubble water supply pipe 422 and the circulation pipe 43 are installed to be spaced apart on both sides as shown in FIG. can be added As the number of microbubbles rotates in this way, the microbubbles are further pulverized to generate nanobubbles.

As shown in FIG. 1, the microbubble water transfer pipe 42 includes an upward pipe 421 extending upward from the mixing pump unit 1, a bifurcation point 424 branching in two directions from the uppermost end of the upward pipe 421, Including a microbubble water supply pipe 422 extending from the branch point 424 to the mixing tank part 2 and a microbubble water discharge pipe 423 extending outwardly from the branch point 424 to discharge a part of the microbubble water can be done As such, by providing the upward pipe 421 , the position at which the microbubble water supply pipe 422 is coupled to the mixing tank part 2 can be located relatively above the circulation pipe 43 .

Since the microbubble water discharge pipe 423 extends outward from the branch point 424, it can be used by discharging the microbubble water when using it.

Each tube may include a valve 5 as required. Preferably, the circulation pipe 43, the microbubble supply pipe, and the microbubble discharge pipe may include a solenoid valve, and the upstream pipe 421 may include a check valve.

Since the circulation pipe 43, the microbubble supply pipe, and the microbubble discharge pipe need to be opened and closed to control the flow rate as necessary, it is preferable to adjust the flow rate using a solenoid valve, and the upward pipe 421 is located in the pipe. It is preferably a check valve to prevent backflow of water. However, the valve 5 is not necessarily limited thereto, and other types of valves 5 may be employed as needed.

As described above, the microbubble water is changed into nanobubble water while descending from the top to the bottom while rotating in the inner space 21 of the mixing tank 2, in order to discharge the nanobubble water generated below to the outside. As shown in FIG. 1 , the nano-bubble water discharge pipe 22 may be configured to extend upwardly from the inner bottom surface of the mixing pump unit 1 to communicate with the outside.

A pressure reducing valve (not shown) may be further installed in the nanobubble water discharge pipe 22 if necessary. The pressure reducing valve may adjust the pressure of the nano-bubbled water discharged through the nano-bubbled water discharge pipe 22 to preferably 5 to 10 bar. By controlling the pressure reducing valve in this way, the discharge amount or the discharge ratio of the microbubble water and the nanobubble water can be controlled or the size of the nanobubbles can be adjusted. Here, 1 bar is a unit of pressure corresponding to ^{1.019716 kgf/cm 2 .}

At this time, a part of the generated nano-bubble water is discharged to the outside through the nano-bubble water discharge pipe 22 , but a part may return to the mixing pump unit 1 through the circulation pipe 43 .

At this time, the nanobubble water returned to the mixing pump unit 1 through the circulation pipe 43 is mixed again in the mixing pump unit 1 and supplied to the mixing tank unit 2 again through the microbubble water supply pipe 422 and , can be cycled throughout. It is obvious that the valve 5 provided as described above can be used to prevent the nano-bubble water from being circulated as needed.

When the microbubble water is rotated and mixed in the mixing tank part 2, whether to circulate and the pressure can be adjusted according to the water level as will be described later. For this purpose, the mixing tank part 2 may further include a water level sensor. .

The oxygen tank unit 3 is configured to store oxygen to be supplied to the mixing pump unit 1 and the mixing tank unit 2 . The first high-pressure hose 31 is configured to supply oxygen to the mixing pump unit 1 , and the second high-pressure hose 32 is configured to supply oxygen to the mixing tank unit 2 . At this time, the second high-pressure hose 32 may be in communication with the oxygen input hole 23 formed separately on the upper surface of the mixing tank unit 2 to supply oxygen. In this case, the first high-pressure hose 31 may further include a valve capable of controlling the amounts of nano bubbles and micro bubbles by controlling the amount of oxygen supplied to the mixing pump unit 1 .

Each high-pressure hose is equipped with a pressure gauge and a regulator as necessary to supply an appropriate amount of oxygen and pressure. In addition, each high-pressure hose is provided with a valve 5, preferably a solenoid valve, to control the supply of oxygen. At this time, the oxygen supplied from the oxygen tank unit 3 may be not only pure oxygen, but also air mainly containing oxygen. In addition, the inclusion of oxygen is not essential because it may be nitrogen or carbon that does not contain oxygen if necessary. Therefore, what is referred to as oxygen in the present specification is not necessarily limited to only oxygen or a gas containing oxygen, and may be a gas that does not contain oxygen. A description is omitted.

In the nanobubble water generating apparatus according to the present invention, the relative position, arrangement, size, etc. of the mixing pump unit 1, the mixing tank unit 2, the oxygen tank unit 3, and other components are adjusted to have a close relationship. Hereinafter, a preferred embodiment of the nanobubble water generating apparatus according to the present invention will be described in detail.

The nanobubble water generating apparatus according to the present invention includes a mixing pump unit 1 , a mixing tank unit 2 , and an oxygen tank unit 3 .

Water level sensors are provided at positions corresponding to 3/4, 1/2 and 1/4 of the total height from the bottom of the mixing tank 2, respectively. The nano-bubble water discharge pipe 22 is spaced apart from the bottom surface of the mixing tank part 2 and extends upward to pass through the uppermost end surface of the mixing tank part 2 and communicate with the outside. The suction port 221 of the lowermost end of the nano-bubble water discharge pipe 22 is formed, and the circulation pipe 43 is connected to one side of the mixing tank 2 relatively above the suction port 221 .

The circulation pipe 43 extends from the mixing tank unit 2 and is connected to the suction pipe 41 , and the suction pipe 41 is connected to the mixing pump unit 1 from the outside. At this time, the circulation pipe 43 is provided with a solenoid valve. The suction pipe 41 to which the circulation pipe 43 is connected is connected to the mixing pump unit 1 and mixes the water introduced through the suction pipe 41 and the nanobubble water introduced through the circulation pipe 43 into the mixing pump unit 1 ) is supplied.

The mixing pump unit 1 has a structure in which 5 to 6 mixing pumps are arranged in multiple stages, the mixing pump of the last stage is a mixing pump including a mixer impeller, and the other stage is a mixing pump including a suction impeller.

An upward pipe 421 is connected to the upper surface of the mixing pump and extends upward. At this time, a check valve is provided in the upward pipe 421 to prevent the reverse flow of microbubble water. The upward pipe 421 extends upward to a height corresponding to 40 to 60% of the height of the mixing tank 2 and a branching point 424 branching in two directions is formed at the top end. Based on the branch point 424, a microbubble water supply pipe 422 extending to the mixing tank part 2 is formed on one side, and a microbubble water discharge pipe 423 is formed on the other side toward the outside. At this time, the microbubble water supply pipe 422 is extended and connected to the mixing tank part 2 , located relatively above the circulation pipe 43 , and located on the opposite side of the circulation pipe 43 in a direction facing each other. are arranged At this time, the microbubble water supply pipe 422 and the microbubble water discharge pipe 423 include a solenoid valve. It is possible to control the amount and speed of discharging microbubble water and supplying microbubble water to the mixing tank unit 2 by using the solenoid valve.

The oxygen tank part 3 is positioned to be spaced apart from the mixing tank part 2 and the mixing pump part 1, and is connected to the mixing pump part 1 through the first high-pressure hose 31, and a second high-pressure hose ( 32) is connected to the mixing tank part (2). At this time, the first and second high-pressure hoses are equipped with a pressure gauge, a regulator, and a solenoid valve.

The second high-pressure hose 32 is connected to the upper surface of the mixing tank part 2 , and the oxygen input hole 23 into which oxygen supplied through the second high-pressure hose 32 is injected into the upper surface of the mixing tank part 2 . is formed, and may be formed in plurality if necessary.

Looking at the operation of the nanobubble generating device according to the preferred embodiment, when water is stored about 3/4 of the mixing tank part 2, the water level sensor detects it, and automatically or by sending a signal to the user, each tube The pressure applied to the water is increased through the mixing pump unit 1 while circulating the water by properly opening the solenoid valve of the . Through this, it is possible to further mix the microbubble water.

On the contrary, when the water is drained to about 1/4 of the mixing tank part 2, the solenoid valve is appropriately adjusted, more specifically, the solenoid valve provided in the circulation pipe 43 is locked to suppress the circulation of water, and the external water is sucked in and supplied.

When the water reaches about 1/2 of the mixing tank part 2, the provided water level sensor detects it and the oxygen supply to the mixing tank part 2 is opened, that is, the solenoid valves connected to the first and second high-pressure hoses are opened. Oxygen is supplied and the water closes when it is 3/4 full. At this time, the mixing tank unit 2 is provided as shown in Figure 2, and pressed by 8 to a pressure of 12kgf / cm ² in the manner of an air cushion, the mixing pump unit (1) has three to five pressure kgf / cm ² oxygen can be supplied. In other words, as shown in FIG. 2 , when oxygen is supplied to the mixing tank unit 2 , the air cushion is formed by being pressurized in the direction of the arrow from the upper surface of the water surface. At this time, the pressure of the oxygen tank unit 3 is used as it is. will do According to a preferred embodiment, the pressure of the oxygen tank unit 3 may be adjusted to ^{100 to 140 kg/cm 2 .}

Through this, as the water is stored, the pressure of the air layer increases and becomes saturated. The air bubbles in the water no longer rise to the surface, but are split by rotation, compressed under pressure, and eventually transformed into nano bubbles. do. The nano-bubbles that gradually decrease in this way are pushed down to the bottom and sucked through the suction port 221 of the nano-bubble water discharge pipe 22, and the pressure is reduced so that the high-purity nano-bubble water can be discharged.

Hereinafter, a process of generating nanobubble water will be described with reference to FIGS. 3 and 4 . 3 is a circuit diagram schematically illustrating the flow direction of a fluid in the nanobubble water generating device according to the present invention, and FIG. 4 is a schematic representation of the process of generating nanobubble water through the nanobubble water generating device according to the present invention. .

(a) First, water is sucked through the suction pipe 41 .

(b-1) Gas is supplied from the mixing pump unit 1 and pressurized to generate and supply microbubble water.

(b-2) If necessary, a part of the microbubble water is discharged to the stomach.

(c) The microbubble water supplied from step b-1 is transferred to the mixing tank unit 2 .

(d) Oxygen and pressure are supplied to the microbubble water supplied to the mixing tank unit 2 .

(e) Nanobubble water is generated.

(f-1) Some of the nanobubble water is transferred to the mixing pump unit 1 (step between a and b-1) according to the water level through the circulation pipe 43 .

(f-2) The nano-bubbled water is discharged to the outside through the nano-bubbled water discharge pipe 22 .

Above, the present invention has been described in detail with preferred embodiments with reference to the drawings, but the scope of the technical idea of the present invention is not limited to these drawings and examples. Accordingly, various modifications or equivalent ranges of embodiments may exist within the scope of the technical spirit of the present invention. Therefore, the scope of the technical idea according to the present invention should be interpreted by the claims, and the technical idea within the equivalent or equivalent scope should be interpreted as belonging to the scope of the present invention.

1: mixing pump unit 41: suction pipe
2: mixing tank part 42: microbubble water transfer pipe
21: inner space 421: upward pipe
22: nano bubble water discharge pipe 422: micro bubble water supply pipe
221: suction port 423: micro bubble water discharge pipe
23: oxygen inlet 424: branch point
3: oxygen tank part 43: circulation pipe
31: first high-pressure hose 5: valve
32: second high-pressure hose

Claims (12)

a mixing pump unit (1) for mixing oxygen with water supplied through the suction pipe (41) from the outside to generate microbubble water, and supplying the microbubble water by applying pressure;
An inner space 21 for generating nanobubble water by mixing oxygen with the microbubble water supplied from the mixing pump unit 1; is formed, and nanobubble water for discharging the generated nanobubble water to the outside Discharge pipe (22); having a mixing tank unit (2); and
and an oxygen tank unit (3) for supplying oxygen to the mixing pump unit (1) and the mixing tank unit (2).
According to claim 1,
The mixing pump unit 1 is
Nanobubble water generating device, characterized in that it is a multistage pump consisting of a 5 or 6 stage mixing pump.
3. The method of claim 2,
The mixing pump unit 1 is
A nanobubble water generating device, characterized in that a pump including a mixer impeller is arranged at the last stage.
According to claim 1,
The mixing tank part (2),
A circulation pipe 43 for moving a part of the nanobubble water generated in communication with the suction pipe 41 to the mixing pump unit 1; and
Nanobubble water comprising a; microbubble water transfer pipe 42 communicating with the mixing pump unit 1 to move the microbubble water generated from the mixing pump unit 1 to the mixing tank unit 2 generating device.
5. The method of claim 4,
The circulation pipe 43 and the microbubble water moving pipe 42 are,
Nanobubble water generating device, characterized in that spaced apart from both sides of the mixing tank (2).
5. The method of claim 4,
The microbubble water transfer tube 42,
an upward pipe 421 extending upward from the mixing pump unit 1;
a bifurcation point 424 branching in two directions from the uppermost end of the upward pipe 421;
a microbubble water supply pipe 422 extending from the branch point 424 to the mixing tank part 2; and
and a microbubble water discharge pipe (423) extending outwardly from the branch point (424) to discharge a part of the microbubble water.
7. The method according to any one of claims 4 to 6,
At least one or more of the respective tubes comprises a valve (5).
8. The method of claim 7,
The valve (5) is a nano-bubble water generating device, characterized in that a solenoid valve or a check valve.
According to claim 1,
The nano-bubble water discharge pipe 22,
Nanobubble water generating device, characterized in that it extends upward from the inner bottom surface of the mixing pump unit 1 and communicates with the outside.
According to claim 1,
The mixing tank part (2),
Nanobubble water generating device, characterized in that it further comprises a water level sensor for measuring the water level in the inner space (21).
According to claim 1,
The oxygen tank part 3,
and a first high-pressure hose (31) for supplying oxygen to the mixing pump unit (1).
According to claim 1,
The oxygen tank part 3,
A second high-pressure hose (32) for supplying oxygen to the mixing tank (2); further comprising,
The second high-pressure hose (32) is an oxygen input hole (23) formed on the upper surface of the mixing tank (2); Nanobubble water generating device, characterized in that in communication with.

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