Device for increasing dissolved amount of nanobubbles in liquid

Abstract

The invention belongs to the field of nanobubble treatment devices, and provides a device for increasing the dissolved amount of nanobubbles in liquid, the device comprises a low-pressure tank and a high-pressure tank, and a high-pressure generation assembly and a low-pressure generation assembly are mounted between the low-pressure tank and the high-pressure tank; the high-pressure generating assembly comprises a high-pressure generating pipe connected between the bottom surface of the low-pressure tank and the bottom surface of the high-pressure tank, and a motor and a bubble generator which are mounted at the high-pressure generating pipe; the low-pressure generating assembly reduces the amount of liquid discharged from the high-pressure tank to the low-pressure tank; by arranging the high-pressure generating assembly and the low-pressure generating assembly, the space of nano bubbles can be enlarged by removing micro bubbles in liquid, and the proportion of the nano bubbles is greatly increased by increasing the dissolving amount of the nano bubbles in the liquid.

Description

Technical Field

[0001] The invention belongs to the field of nano bubble processing devices, in particular to a device for increasing the amount of nano bubbles dissolved in liquid. Background Art

[0002] Bubbles can be divided into millibubbles, microbubbles, micro-nanobubbles and nanobubbles according to their diameter. The diameter of microbubbles is usually 10 to tens of microns, at least less than 30 microns; the diameter of micro-nanobubbles ranges from hundreds of nanometers to 10 microns; nanobubbles refer to ultrafine bubbles with a diameter of less than hundreds of nanometers; unlike ordinary bubbles that rise rapidly in water and burst on the surface, nanobubbles are small in size and experience less buoyancy, so they rise to the surface very slowly and can remain in a bubble state for a long time. Nanobubbles have characteristics such as gas dissolution effect, self-pressurization effect and charging effect underwater, which make them have high application potential in various fields such as sewage treatment-related facilities, advanced water purification facilities, soil purification, fisheries, farmland, drainage treatment and cleaning.

[0003] With the in-depth understanding of the characteristics of nanobubbles and the continuous expansion of their application fields, the demand for devices that can dissolve enough nanobubbles in liquids has become very urgent. The role of nanobubbles in various fields is becoming increasingly prominent, and the more nanobubbles dissolved in liquids, the more their characteristics can be fully utilized. For example, in sewage treatment, nanobubbles can effectively remove organic matter and heavy metal ions from water; in advanced water purification facilities, nanobubbles can improve the purity and taste of water; in soil purification, nanobubbles can promote the growth and metabolism of microorganisms in the soil and improve soil fertility; in fisheries and farmland, nanobubbles can increase the oxygen content in water, promote the growth of aquatic organisms and the growth of crops.

[0004] The existing nanobubble dissolving device only has a structure of blowing nanobubbles into liquid to dissolve the nanobubbles in the liquid, but cannot continuously increase the amount of nanobubbles dissolved in the liquid.

[0005] To this end, those skilled in the art have proposed a device for increasing the amount of nanobubbles dissolved in liquid to solve the problems raised in the background art. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a device for increasing the amount of nanobubbles dissolved in a liquid, so as to solve the problem that the nanobubble dissolving device in the prior art only has a structure of blowing nanobubbles into the liquid so that the nanobubbles are dissolved in the liquid, but cannot continuously increase the amount of nanobubbles dissolved in the liquid.

[0007] A device for increasing the amount of nanobubbles dissolved in a liquid, comprising a low-pressure tank and a high-pressure tank, wherein a high-pressure generating component and a low-pressure generating component are installed between the low-pressure tank and the high-pressure tank;

[0008] The high-pressure generating assembly includes a high-pressure generating tube connected between the bottom surface of the low-pressure tank and the bottom surface of the high-pressure tank, a motor installed at the high-pressure generating tube, and a bubble generator;

[0009] The low pressure generating assembly reduces the amount of liquid discharged from the high pressure tank to the low pressure tank.

[0010] Through the above technical scheme, the low-pressure tank and the high-pressure tank are set, which provides the basic conditions for realizing the treatment of nanobubbles under different pressure environments, and helps to increase the dissolution amount of nanobubbles in the liquid; the high-pressure generating component can transport the liquid and bubbles from the low-pressure tank to the high-pressure tank, creating conditions for the treatment of nanobubbles under high-pressure environment and promoting the dissolution of nanobubbles; the low-pressure generating component can effectively control the flow direction of the liquid, so that the high-pressure tank can maintain a relatively high-pressure state, which is conducive to the generation and accumulation of nanobubbles.

[0011] Preferably, the low-pressure generating assembly comprises a low-pressure generating tube connected between the bottom surface of the low-pressure tank and the bottom surface of the high-pressure tank, and the diameter of the low-pressure generating tube is smaller than the diameter of the high-pressure generating tube.

[0012] Through the above technical solution, the design of different diameters of the low-pressure generating tube and the high-pressure generating tube can utilize the principles of fluid mechanics to better control the flow velocity and pressure of the liquid, thereby providing suitable conditions for the treatment of nanobubbles.

[0013] Preferably, the low-pressure generating assembly includes a low-pressure generating tube connected between the bottom surface of the low-pressure tank and the bottom surface of the high-pressure tank, and a low-pressure generator installed on the peripheral side of the low-pressure generating tube.

[0014] Through the above technical solution, the structural diversity of the low-pressure generating assembly is increased, the adaptability and stability of the device are improved, and it is helpful to optimize the nanobubble treatment.

[0015] Preferably, the connection part between the low-pressure generator and the high-pressure tank forms a first through hole, and the connection part between the low-pressure generator and the low-pressure tank forms a second through hole; the diameter of the first through hole is larger than that of the second through hole.

[0016] Through the above technical solution, the differential design of the through-hole diameters can more accurately adjust the liquid flow rate and further improve the separation and dissolution effects of nanobubbles.

[0017] Preferably, a pressure monitoring module is also installed between the low-pressure tank and the high-pressure tank.

[0018] Through the above technical solution, the pressure of the low-pressure tank and the high-pressure tank can be monitored in real time to ensure that the device operates within a safe pressure range, thereby improving the reliability and stability of the device.

[0019] Preferably, the pressure monitoring module includes a first pressure detector installed in the low-pressure tank and a second pressure detector installed in the high-pressure tank.

[0020] Through the above technical solution, the pressure of the low-pressure tank and the high-pressure tank can be tested separately, so that the pressure state of the system can be more accurately grasped, providing a basis for adjusting the operating parameters of the device.

[0021] Preferably, a safety valve is installed around the high-pressure tank.

[0022] Through the above technical solution, when the pressure in the high-pressure tank is abnormal, the safety valve can be opened in time to prevent equipment damage and safety accidents, thereby ensuring the safe operation of the device.

[0023] Preferably, the pressure monitoring module monitors the pressure values ​​of the low-pressure tank and the high-pressure tank and controls the opening and closing of the safety valve.

[0024] Through the above technical solution, automatic monitoring and control of pressure are realized, the intelligence level of the device is improved, and the safety and stability of the nanobubble treatment process are ensured.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention provides a high-pressure generating component and a low-pressure generating component, wherein a motor and a bubble generator dissolve microbubbles and nanobubbles together in a high-pressure tank. When the liquid containing microbubbles and nanobubbles dissolved together in the high-pressure tank is transported to a low-pressure state, the low-pressure generator pipeline is used to float and break the microbubbles, leaving only the dissolved nanobubbles. Then, the liquid containing only dissolved nanobubbles is transported to the high-pressure tank again through the high-pressure generator pipeline. This process is repeated by the motor and the bubble generator, so that the space of nanobubbles can be expanded by removing microbubbles in the liquid, and the proportion of nanobubbles can be greatly increased by increasing the amount of nanobubbles dissolved in the liquid.

[0027] 2. The present invention monitors the pressure values ​​of the low-pressure tank and the high-pressure tank in real time by setting a pressure monitoring module. When the pressure exceeds the safety range, the safety valve is controlled to open to ensure the safe operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the present invention viewed from above;

[0030] Figure 3 for Figure 2 Schematic diagram of the AA section structure;

[0031] Figure 4 It is a schematic structural diagram of the second embodiment of the present invention.

[0032] In the figure:

[0033] 110. Low-pressure tank; 120. High-pressure tank; 130. High-pressure generating tube; 131. Motor; 132. Bubble generator; 140. Low-pressure generating tube; 141. Low-pressure generator; 142. First through hole; 143. Second through hole; 150. First pressure detector; 160. Second pressure detector; 170. Safety valve. DETAILED DESCRIPTION

[0034] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0035] Embodiment 1: As shown in the attached Figure 1 To Attachment Figure 3 As shown: The present invention provides a device for increasing the amount of nanobubbles dissolved in liquid, comprising a low-pressure tank 110 and a high-pressure tank 120, wherein a high-pressure generating component and a low-pressure generating component are installed between the low-pressure tank 110 and the high-pressure tank 120;

[0036] The high pressure generating assembly includes a high pressure generating tube 130 connected between the bottom surface of the low pressure tank 110 and the bottom surface of the high pressure tank 120, a motor 131 installed at the high pressure generating tube 130, and a bubble generator 132;

[0037] The low pressure generating assembly reduces the amount of liquid discharged from the high pressure tank 120 to the low pressure tank 110 .

[0038] When liquid is transported from the low-pressure tank 110 to the high-pressure tank 120, a motor 131 and a bubble generator 132 are provided in the high-pressure generating tube 130, and low pressure is generated in the low-pressure generating tube 140 at the same time. The liquid is transported together with the bubbles generated by the bubble generator 132 driven by the motor 131, and the liquid in the high-pressure tank 120 is discharged in an amount smaller than the amount of liquid introduced into the high-pressure tank 120 by the low-pressure generating assembly; therefore, high pressure can be generated in the high-pressure tank 120 and low pressure can be generated in the low-pressure tank 110.

[0039] Before the motor 131 is running, the internal pressures of the low-pressure tank 110 and the high-pressure tank 120 are both at atmospheric pressure, so the internal pressure of the low-pressure tank 110 is not low pressure, and the internal pressure of the high-pressure tank 120 is not high pressure.

[0040] However, when the motor 131 is operated, the liquid in the low-pressure tank 110 is transported to the high-pressure tank 120 through the high-pressure generating pipe 130, but the liquid in the high-pressure tank 120 is discharged from a low-pressure state; when the amount of liquid flowing in decreases, the high-pressure tank 120 enters a high-pressure state; at this time, in order to reduce the amount of liquid discharged from the high-pressure tank 120, a low-pressure generating device must be set in the low-pressure generating pipe 140 connected to the high-pressure tank 120.

[0041] The low pressure generating assembly includes a low pressure generating tube 140 connected between the bottom surface of the low pressure tank 110 and the bottom surface of the high pressure tank 120 . The diameter of the low pressure generating tube 140 is smaller than that of the high pressure generating tube 130 .

[0042] A pressure monitoring module is also installed between the low-pressure tank 110 and the high-pressure tank 120 . The pressure monitoring module includes a first pressure detector 150 installed in the low-pressure tank 110 and a second pressure detector 160 installed in the high-pressure tank 120 .

[0043] A safety valve 170 is installed around the high-pressure tank 120. The pressure monitoring module monitors the pressure values ​​of the low-pressure tank 110 and the high-pressure tank 120 and controls the opening and closing of the safety valve 170. The pressure monitoring module monitors the pressure values ​​of the low-pressure tank 110 and the high-pressure tank 120 in real time.

[0044] When the pressure exceeds the safety range, the safety valve 170 is controlled to open to ensure the safe operation of the equipment. This function effectively prevents equipment damage and safety accidents that may be caused by excessive pressure; through the control of the liquid flow by the low-pressure generating component, the pressure can be gradually accumulated in the high-pressure tank 120 to form a high-pressure state, and a relatively low-pressure state can be formed in the low-pressure tank 110, realizing precise regulation and control of the pressure, and creating suitable pressure conditions for the generation and dissolution of nanobubbles.

[0045] As the amount of liquid and gas flowing into the high-pressure tank 120 gradually increases, the amount of liquid and gas discharged also increases; however, the amount of liquid and gas discharged from the high-pressure tank 120 through the low-pressure tank 110 is reduced by the pressure generating device. Eventually, the amount of liquid and gas discharged from the high-pressure tank 120 increases again, and the interior of the high-pressure tank 120 becomes a high-pressure state.

[0046] After the bubbles generated from the bubble generator 132 flow into the high pressure tank 120 under high pressure, when the bubbles circulate back to the low pressure tank 110, nano bubbles, micro bubbles and larger bubbles will exist together. Under the low pressure condition of the low pressure tank 110, the micro bubbles and larger bubbles dissolved in the liquid (water) will be suspended and incorporated into the gas at the top of the tank, leaving only nano bubbles in the liquid. The liquid in the low pressure tank 110 containing nano bubbles is introduced into the high pressure tank 120 again together with the bubbles generated by the bubble generator 132 driven by the motor 131.

[0047] As described above, the bubbles repeatedly circulate through the low-pressure tank 110 and the high-pressure tank 120. In proportion to the number of times this procedure is repeated, a space equivalent to the amount of microbubbles removed is secured in the liquid, thereby creating a space for nanobubbles, and eventually the proportion of nanobubbles increases, thereby significantly increasing the amount of nanobubbles dissolved in the liquid.

[0048] As can be seen from the above, the increase in the amount of nanobubbles dissolved in the liquid is achieved by arranging a high-pressure generating assembly and a low-pressure generating assembly between the low-pressure tank 110 and the high-pressure tank 120; the motor 131 and the bubble generator 132 in the high-pressure generating assembly work in the high-pressure generating tube 130 to transport the liquid and bubbles from the low-pressure tank 110 to the high-pressure tank 120. The diameter of the low-pressure generating tube 140 is smaller than that of the high-pressure generating tube 130, and its function is to reduce the amount of liquid discharged from the high-pressure tank 120 to the low-pressure tank 110, thereby gradually accumulating pressure in the high-pressure tank 120 to form a high-pressure state, and forming a relatively low-pressure state in the low-pressure tank 110.

[0049] As liquid and gas continue to flow into the high-pressure tank 120, the amount of liquid and gas discharged will also increase accordingly, but due to the limitation of the low-pressure generating pipe 140, the amount of liquid and gas discharged from the high-pressure tank 120 to the low-pressure tank 110 will decrease; when the pressure in the high-pressure tank 120 reaches a certain level, its interior becomes a high-pressure state. At this time, the bubbles generated by the bubble generator 132 flow into the high-pressure tank 120 under high pressure, and then circulate back to the low-pressure tank 110, bubbles of different sizes will separate, microbubbles and larger bubbles will be suspended and merged into the gas at the top of the tank, leaving only nano bubbles in the liquid; this cycle is repeated, constantly creating space for nano bubbles, increasing the proportion and dissolution amount of nano bubbles in the liquid.

[0050] When the motor 131 is not running, the pressures in the low-pressure tank 110 and the high-pressure tank 120 are both atmospheric pressure; after starting the motor 131, the liquid in the low-pressure tank 110 is transported to the high-pressure tank 120 through the high-pressure generating pipe 130 under the action of the motor 131 and the bubble generator 132; in this process, the liquid is transported together with the bubbles generated by the bubble generator 132.

[0051] As the liquid and gas flow in, the pressure in the high-pressure tank 120 changes gradually. When the amount of liquid flowing in decreases, the high-pressure tank 120 enters a high-pressure state due to the restriction of the low-pressure generating pipe 140; the pressure monitoring module monitors the pressure values ​​of the low-pressure tank 110 and the high-pressure tank 120 in real time. When the pressure exceeds the safety range, the safety valve 170 is controlled to open to ensure the safe operation of the equipment.

[0052] The bubbles circulate repeatedly between the high-pressure tank 120 and the low-pressure tank 110; the bubbles generated by the bubble generator 132 flow into the high-pressure tank 120 under high pressure, and then circulate back to the low-pressure tank 110, and the bubbles of different sizes are separated; the liquid in the low-pressure tank 110 containing nanobubbles is again introduced into the high-pressure tank 120 together with the bubbles generated by the bubble generator 132 driven by the motor 131, and the circulation continues, and the amount of nanobubbles dissolved in the liquid is continuously increased.

[0053] Embodiment 2: As shown in the attached Figure 4 As shown: This embodiment is basically the same as the previous embodiment, except that the low-pressure generating assembly includes a low-pressure generating pipe 140 connected between the bottom surface of the low-pressure tank 110 and the bottom surface of the high-pressure tank 120, and a low-pressure generator 141 installed on the peripheral side of the low-pressure generating pipe 140, and the connecting part of the low-pressure generator 141 and the high-pressure tank 120 forms a first through hole 142, and the connecting part of the low-pressure generator 141 and the low-pressure tank 110 forms a second through hole 143; the diameter of the first through hole 142 is larger than the second through hole 143. Although the structure is different from that of the first embodiment, in the present invention, the low-pressure generating assembly only needs to have the function of reducing the amount of liquid discharged from the high-pressure tank 120 to the low-pressure tank 110.

[0054] The amount of liquid discharged from the high-pressure tank 120 to the low-pressure tank 110 is controlled by arranging a low-pressure generating assembly of different structures between the low-pressure tank 110 and the high-pressure tank 120. In this embodiment, the low-pressure generating assembly includes a low-pressure generating pipe 140 and a low-pressure generator 141 installed on the periphery of the low-pressure generating pipe 140. The diameter of the first through hole 142 of the low-pressure generator 141 connecting the high-pressure tank 120 is larger than the second through hole 143 of the low-pressure generator 141 connecting the low-pressure tank 110. This structural difference is used to reduce the amount of liquid discharged from the high-pressure tank 120 to the low-pressure tank 110, thereby forming a high-pressure state in the high-pressure tank 120, creating conditions for the generation and accumulation of nanobubbles.

[0055] Similarly, during the bubble circulation process, bubbles of different sizes are separated under the low pressure condition of the low pressure tank 110, and nano bubbles remain in the liquid. The proportion and dissolution amount of nano bubbles in the liquid are continuously increased through repeated circulation.

[0056] Before starting the motor 131 , the pressures in the low-pressure tank 110 and the high-pressure tank 120 are atmospheric pressure; after starting the motor 131 , the liquid and bubbles are transported from the low-pressure tank 110 to the high-pressure tank 120 through the high-pressure generating pipe 130 .

[0057] In this process, the low-pressure generator 141 reduces the amount of liquid discharged from the high-pressure tank 120 to the low-pressure tank 110 through its special through-hole structure. With the inflow of liquid and gas, the pressure in the high-pressure tank 120 gradually increases, and enters a high-pressure state when it reaches a certain level; the pressure monitoring module monitors the pressure changes in real time, and the safety valve 170 opens when necessary.

[0058] The bubbles circulate repeatedly between the high-pressure tank 120 and the low-pressure tank 110. The bubbles flowing into the high-pressure tank 120 enter the high-pressure tank 120 under high pressure, and then circulate back to the low-pressure tank 110. The microbubbles and larger bubbles are separated out by the low-pressure condition of the low-pressure tank 110, and the nanobubbles remain in the liquid. The liquid containing the nanobubbles is introduced into the high-pressure tank 120 again, and the circulation continues, thereby increasing the amount of dissolved nanobubbles.

[0059] Embodiment 3: The low pressure generating assembly includes a variable diameter low pressure generating pipe 140 connected between the bottom surfaces of the low pressure tank 110 and the high pressure tank 120 and a flow regulating valve installed in the middle position of the variable diameter low pressure generating pipe 140 .

[0060] When the motor 131 is started, liquid and bubbles are transported from the low-pressure tank 110 to the high-pressure tank 120 through the high-pressure generating tube 130. In this process, the variable-diameter low-pressure generating tube 140 reduces the amount of liquid discharged from the high-pressure tank 120 to the low-pressure tank 110 by adjusting its own diameter. Specifically, when the pressure in the high-pressure tank 120 is low, the variable-diameter low-pressure generating tube 140 is in a larger diameter state, allowing a certain amount of liquid to flow back to the low-pressure tank 110; as the pressure in the high-pressure tank 120 gradually increases, the variable-diameter low-pressure generating tube 140 automatically reduces the diameter to reduce liquid reflux; the flow regulating valve can further accurately adjust the flow of the liquid according to actual conditions.

[0061] As liquid and gas flow in, the pressure in the high-pressure tank 120 gradually increases, and when it reaches a certain level, it enters a high-pressure state; the pressure monitoring module monitors the pressure values ​​of the low-pressure tank 110 and the high-pressure tank 120 in real time. When the pressure exceeds the safety range, the safety valve 170 is controlled to open to ensure the safe operation of the equipment.

[0062] The bubbles circulate repeatedly between the high-pressure tank 120 and the low-pressure tank 110. The bubbles generated by the bubble generator 132 flow into the high-pressure tank 120 under high pressure, and then circulate back to the low-pressure tank 110, where bubbles of different sizes are separated. Under the low-pressure condition of the low-pressure tank 110, microbubbles and larger bubbles are suspended and merged into the gas at the top of the tank, leaving only nanobubbles in the liquid. The liquid in the low-pressure tank 110 containing nanobubbles is again introduced into the high-pressure tank 120 together with the bubbles generated by the bubble generator 132 driven by the motor 131, and the circulation continues, thereby continuously increasing the amount of nanobubbles dissolved in the liquid.

[0063] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

[0064] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0068] In the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0069] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for increasing the amount of nanobubbles dissolved in a liquid, characterized in that: It comprises a low-pressure tank (110) and a high-pressure tank (120), wherein a high-pressure generating component and a low-pressure generating component are installed between the low-pressure tank (110) and the high-pressure tank (120); The high-pressure generating assembly comprises a high-pressure generating tube (130) connected between the bottom surface of the low-pressure tank (110) and the bottom surface of the high-pressure tank (120), a motor (131) installed at the high-pressure generating tube (130), and a bubble generator (132); The low pressure generating assembly reduces the amount of liquid discharged from the high pressure tank (120) to the low pressure tank (110).

2. A device for increasing the amount of nanobubbles dissolved in liquid as claimed in claim 1, characterized in that: The low-pressure generating assembly comprises a low-pressure generating tube (140) connected between the bottom surface of the low-pressure tank (110) and the bottom surface of the high-pressure tank (120), and the diameter of the low-pressure generating tube (140) is smaller than the diameter of the high-pressure generating tube (130).

3. A device for increasing the amount of nanobubbles dissolved in liquid as claimed in claim 1, characterized in that: The low-pressure generating assembly comprises a low-pressure generating pipe (140) connected between the bottom surface of the low-pressure tank (110) and the bottom surface of the high-pressure tank (120), and a low-pressure generator (141) installed on the peripheral side of the low-pressure generating pipe (140).

4. A device for increasing the amount of nanobubbles dissolved in liquid as claimed in claim 3, characterized in that: A first through hole (142) is formed at a connection portion between the low-pressure generator (141) and the high-pressure tank (120), and a second through hole (143) is formed at a connection portion between the low-pressure generator (141) and the low-pressure tank (110); the diameter of the first through hole (142) is larger than that of the second through hole (143).

5. A device for increasing the amount of nanobubbles dissolved in liquid as claimed in claim 2 or 3, characterized in that: A pressure monitoring module is also installed between the low-pressure tank (110) and the high-pressure tank (120).

6. A device for increasing the amount of nanobubbles dissolved in liquid as claimed in claim 5, characterized in that: The pressure monitoring module comprises a first pressure detector (150) installed in a low-pressure tank (110) and a second pressure detector (160) installed in a high-pressure tank (120).

7. A device for increasing the amount of nanobubbles dissolved in liquid as claimed in claim 6, characterized in that: A safety valve (170) is installed around the high-pressure tank (120).

8. A device for increasing the amount of nanobubbles dissolved in liquid as claimed in claim 7, characterized in that: The pressure monitoring module monitors the pressure values ​​of the low-pressure tank (110) and the high-pressure tank (120) and controls the opening and closing of the safety valve (170).

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