Gas dissolving device for generating micro-nano bubbles by using gas-liquid double-high-pressure jet method

Abstract

The invention discloses a gas dissolving device for generating micro-nano bubbles by using a gas-liquid double-high-pressure jet method, which comprises a venturi tube body for generating micro-nano bubbles, a water inlet pipe is mounted at one end of the venturi tube body, a gas inlet pipe capable of preventing liquid from flowing back is mounted at a throat pipe of the venturi tube body, and a gas outlet pipe capable of preventing liquid from flowing back is mounted at the other end of the venturi tube body. A cutting blade for crushing and refining micro-nano bubbles is mounted in the Venturi tube body, and a detachable porous membrane is also mounted in the Venturi tube body. When liquid flows through the contraction section of the venturi tube at a high speed, the flow speed is increased, the pressure is reduced, negative pressure is generated, external gas is sucked into the liquid under the suction of the negative pressure, then the liquid and the gas are fully mixed in a pipeline and broken into micro-nano bubbles, and the micro-nano bubble generator is simple in structure, low in cost, capable of continuously working and capable of effectively improving the production efficiency. And the generated micro-nano bubbles can meet the requirements of particularly fine occasions.

Description

Technical Field

[0001] The invention relates to the technical field of nano bubble generators, and in particular to a gas dissolving device for generating micro-nano bubbles by utilizing a gas-liquid dual high-pressure jet method. Background Art

[0002] A nanobubble generator is a device that can generate ultrafine bubbles (called nanobubbles) with a diameter of less than 50 microns. These bubbles have a high specific surface area, long residence time and good mass transfer efficiency, and can therefore be widely used in sewage treatment, aquaculture, metal processing, petrochemicals and food processing.

[0003] For example, a Chinese patent with the publication (announcement) number CN108686838B discloses a nano bubble generator, including a housing, a horizontal partition, a filter plate and a microfluidic tube, wherein the microfluidic tube includes an inner tube, an outer tube, and a copper foil roll arranged between the inner tube and the outer tube, wherein the copper foil roll is made of a copper foil with micro airflow channels etched on the surface; the nano bubble generator also includes an air pump for injecting air into the air cavity and a water pump for injecting water into the gas-liquid mixing cavity. The nano bubble generator of the present invention utilizes a copper foil with a large number of micro airflow channels etched therein to form a microfluidic tube, and high-pressure gas passes through the microfluidic tube to form a large number of fine airflows, which are sheared by a high-speed rotating blade, thereby forming a large number of nano bubbles in the gas-liquid mixing liquid cavity.

[0004] Although the above technical solution solves the corresponding technical problem, the size and stability of the nanobubbles generated by the nanobubble generator in the above technology are relatively poor, which may not be suitable for some application scenarios requiring high-precision nanobubbles. Summary of the invention

[0005] The purpose of the present invention is to provide a gas dissolving device that generates micro-nano bubbles by using a gas-liquid dual high-pressure jet method. When the liquid flows through the contraction section of the venturi tube at a high speed, the flow rate increases, the pressure decreases, and a negative pressure is generated. Under the attraction of the negative pressure, the external gas is sucked into the liquid. Subsequently, in the pipeline, the liquid and the gas are fully mixed and broken into micro-nano bubbles. The present invention has a simple structure, low cost, and can work continuously. At the same time, the generated micro-nano bubbles can meet the needs of particularly delicate occasions.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] A gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method, comprising:

[0008] A venturi tube body for producing micro-nano bubbles, wherein a water inlet pipe is installed at one end of the venturi tube body, an air inlet pipe for preventing liquid backflow is installed at the throat of the venturi tube body, a cutting blade for breaking and refining micro-nano bubbles is installed inside the venturi tube body, and a detachable porous membrane is also installed inside the venturi tube body.

[0009] The above-mentioned gas dissolving device that uses the gas-liquid dual high-pressure jet method to generate micro-nano bubbles, wherein an automatic booster pump for supplying water to the inside of the Venturi tube body is installed on the side of the Venturi tube body and corresponding to the position of the water inlet pipe, and a liquid flow meter for liquid flow statistics is installed on the inlet pipe of the automatic booster pump.

[0010] The above-mentioned gas dissolving device that utilizes the gas-liquid dual high-pressure jet method to generate micro-nano bubbles, wherein an anti-backflow component for preventing liquid reflux is installed inside the air intake pipe, and the anti-backflow component includes a sealing ring fixedly connected to the inner wall of the air intake pipe, and the bottom of the sealing ring is fixedly connected to a mounting frame, and the mounting frame is fixedly connected to two symmetrically arranged return springs, and the tops of the two return springs are fixedly connected to a sealing plate used in conjunction with the sealing ring.

[0011] The above-mentioned gas dissolving device that uses the gas-liquid dual high-pressure jet method to generate micro-nano bubbles, wherein both sides of the sealing plate are fixedly connected to limit sliders, and a limit sliding groove matching the limit slider is opened on the inner wall of the mounting frame and at the position corresponding to the limit slider.

[0012] In the above-mentioned gas dissolving device for generating micro-nano bubbles by using the gas-liquid dual high-pressure jet method, an air compressor for increasing the intake pressure is also installed on the top of the intake pipe.

[0013] In the above-mentioned gas dissolving device for generating micro-nano bubbles by using the gas-liquid dual high-pressure jet method, a gas flow meter and a gas pressure meter for detecting the intake volume and intake pressure are sequentially installed on the side of the intake pipe.

[0014] The above-mentioned gas dissolving device that uses the gas-liquid dual high-pressure jet method to generate micro-nano bubbles, wherein a fixing frame for mounting the cutting blade is fixedly connected to the inner wall of the venturi tube body, a driving shaft is rotatably mounted on the fixing frame through a bearing, and the end of the driving shaft is fixedly connected to the cutting blade, and the end of the driving shaft away from the cutting blade is fixedly connected to a driving impeller for driving the cutting blade.

[0015] The above-mentioned gas dissolving device that uses the gas-liquid dual high-pressure jet method to generate micro-nano bubbles, wherein a bearing kit is rotatably installed on the driving shaft, the top of the bearing kit is fixedly connected to a limiting rod, and the top of the limiting rod is fixedly connected to the inner wall of the venturi tube body.

[0016] The above-mentioned gas dissolving device that uses the gas-liquid dual high-pressure jet method to generate micro-nano bubbles, wherein a limiting ring for limiting the porous membrane is fixedly connected on the inner wall of the venturi tube body and corresponds to the position of the porous membrane, and a sealing end cover is arranged on the side of the venturi tube body and corresponds to the position of the porous membrane, and the sealing end cover is fixedly connected to the side of the venturi tube body by installing bolts, and a collecting tube is also installed on the sealing end cover.

[0017] The above-mentioned gas dissolving device that uses the gas-liquid dual high-pressure jet method to generate micro-nano bubbles, wherein the side of the sealing end cover close to the porous membrane is fixedly connected to an abutment ring, and the side of the abutment ring close to the porous membrane abuts against the side of the porous membrane.

[0018] Compared with the prior art, the advantages and positive effects of the present invention are:

[0019] 1. In the present invention, when the liquid flows through the contraction section of the venturi tube at high speed, the flow rate increases, the pressure decreases, and negative pressure is generated. Under the attraction of the negative pressure, the external gas is sucked into the liquid. Subsequently, in the pipeline, the liquid and the gas are fully mixed and broken into micro-nano bubbles. The present invention has a simple structure, low cost, and can work continuously. At the same time, the generated micro-nano bubbles can meet the needs of particularly delicate occasions;

[0020] 2. The present invention, by providing an automatic booster pump, can provide sufficient pressure to allow the liquid to pass through the venturi tube at a higher speed, which has an important influence on the generation effect of micro-nano bubbles. At the same time, the high-performance high-pressure water pump can provide a stable high-pressure water flow to ensure the stability of the generation of micro-nano bubbles. At the same time, the pressure output by the high-pressure water pump can be adjusted according to actual needs to adapt to different working conditions and micro-nano bubble generation requirements, and the flow state of the liquid in the venturi tube can be accurately controlled, thereby ensuring the generation effect of micro-nano bubbles;

[0021] 3. The liquid flow meter provided in the present invention can monitor the flow rate of the liquid in real time, so that the operator can adjust the supply of the liquid as needed to ensure that the liquid flow rate is within a suitable range, which is very critical for the quality and quantity of the generation of micro-nano bubbles;

[0022] 4. In the present invention, when the gas is discharged through the top of the intake pipe, the pressure of the gas will squeeze the sealing plate and make the sealing plate separate from the sealing of the sealing ring, so as to ensure that the gas can be normally blown into the venturi tube body. Once there is liquid in the venturi tube body that wants to flow back upward from the bottom of the intake pipe, the elastic force of the return spring will drive the sealing plate to block the sealing ring, so as to effectively prevent the liquid from flowing back.

[0023] 5. The present invention, by providing an air compressor, can pressurize the gas passing through the air inlet pipe, so that more gas can be pressed into the venturi tube to mix with the liquid. At the throat of the venturi tube, due to the fast flow rate and low pressure of the liquid, the pressurized gas is more likely to enter the liquid under the action of the pressure difference and fully mix with the liquid, which helps to increase the amount of micro-nano bubbles generated, and at the same time, can better control the size and generation efficiency of the bubbles to a certain extent;

[0024] 6. The present invention provides a gas flow meter and a gas pressure meter to measure the flow rate and pressure of the incoming gas, so that the operator can control the supply of gas and ensure that the gas flow rate and pressure match the flow rate and pressure of the liquid, thereby ensuring the generation effect of micro-nano bubbles;

[0025] 7. In the present invention, a cutting blade is arranged inside the venturi tube body. When the gas-liquid mixture enters the venturi tube body, it will be sheared by the cutting blade, so that the passing fluid can form a rotating fluid, increase the shear force of the gas-liquid mixture, and further break and refine the initially formed bubbles, making them smaller in size, close to the nanometer level;

[0026] 8. The porous membrane of the present invention is usually set up with a retention particle size of 0.1 to 10 μm. After the gas-liquid mixture is sheared by the cutting blade, it is sheared again by the porous membrane to further reduce the size of the bubbles, and finally form micro-nano bubbles, which are discharged from the collection tube;

[0027] 9. The control module provided in the present invention is used to control parameters such as gas flow, liquid flow, high-pressure water pump output pressure and action time. Through these control systems, each link in the micro-nano bubble generation process can be accurately adjusted to meet different application requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 It is a schematic structural diagram of a gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method according to the present invention;

[0030] Figure 2 It is a schematic structural diagram of a Venturi tube body in a gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method according to the present invention;

[0031] Figure 3 It is a structural schematic diagram of the air inlet pipe in the gas dissolving device for generating micro-nano bubbles by using the gas-liquid dual high-pressure jet method of the present invention;

[0032] Figure 4 This is a schematic diagram of the internal structure of the air inlet pipe in the gas dissolving device for generating micro-nano bubbles by using the gas-liquid dual high-pressure jet method of the present invention;

[0033] Figure 5 It is a structural schematic diagram of the anti-backflow component in the gas dissolving device for generating micro-nano bubbles by using the gas-liquid dual high-pressure jet method of the present invention;

[0034] Figure 6 It is a schematic diagram of the structure of the cutting blade in the gas dissolving device for generating micro-nano bubbles by using the gas-liquid dual high-pressure jet method of the present invention;

[0035] Figure 7 It is a schematic diagram of the structure of the porous membrane in the gas dissolving device for generating micro-nano bubbles by using the gas-liquid dual high-pressure jet method of the present invention;

[0036] Figure 8 The present invention is a schematic diagram of the structure of an automatic booster pump in a gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method.

[0037] Description of Figure Numbers:

[0038] 1. Venturi tube body; 2. Control module;

[0039] 11. Contraction section; 12. Throat; 13. Diffusion section;

[0040] 101. water inlet pipe; 1011. automatic booster pump; 1012. liquid flow meter;

[0041] 102, air intake pipe; 103, anti-backflow assembly; 1031, sealing ring; 1032, mounting frame; 1033, return spring; 1034, sealing plate;

[0042] 10341, limit slider; 10342, limit slide groove;

[0043] 104. Air compressor; 105. Gas flow meter; 1051. Gas pressure gauge;

[0044] 106, cutting blade; 1061, driving shaft; 1062, fixing frame; 1063, driving impeller; 1064, bearing kit; 1065, limiting rod;

[0045] 107, porous membrane; 1071, limiting ring; 1072, sealing end cover; 10721, mounting bolt; 10722, abutment ring; 108, collecting tube. DETAILED DESCRIPTION

[0046] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0047] Please refer to Figures 1 to 8 As shown, an embodiment of the present invention provides a gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method, comprising: a venturi tube body 1 for producing micro-nano bubbles, a water inlet pipe 101 is installed at one end of the venturi tube body 1, an air inlet pipe 102 for preventing liquid backflow is installed at the throat 12 of the venturi tube body 1, a cutting blade 106 for breaking and refining micro-nano bubbles is installed inside the venturi tube body 1, a detachable porous membrane 107 is also installed inside the venturi tube body 1, a contraction section 11 is located at the place where the diameter of the venturi tube body 1 gradually decreases, a throat 12 is located after the contraction section 11, and a diffusion section 13 is located after the throat 12. When the liquid When passing through the contraction section 11, the flow velocity will gradually increase. According to Bernoulli's principle, the increase in flow velocity will lead to a decrease in pressure, thereby forming a low-pressure area in the contraction section 11, creating conditions for the inhalation of gas. At the throat 12, the flow velocity of the liquid reaches a maximum value and the pressure reaches a minimum value. The gas enters the throat 12 through the intake pipe 102 and is fully mixed with the high-speed flowing liquid to form a gas-liquid mixture. When the gas-liquid mixture passes through the diffusion section 13, the flow velocity gradually decreases and the pressure gradually recovers. However, since the liquid already contains a large amount of gas, cavitation will occur during the pressure change process, forming a large number of tiny bubble nuclei. These bubble nuclei are the initial form of micro-nano bubbles.

[0048] By adopting the above technical solution, when the liquid flows through the contraction section 11 of the venturi tube at high speed, the flow rate increases, the pressure decreases, and negative pressure is generated. Under the attraction of the negative pressure, the external gas is sucked into the liquid. Subsequently, in the pipeline, the liquid and the gas are fully mixed and broken into micro-nano bubbles. The present invention has a simple structure, low cost, and can work continuously. At the same time, the generated micro-nano bubbles can meet the needs of particularly delicate occasions.

[0049] Among them, the gas introduced into the air inlet pipe 102 includes hydrogen, and the hydrogen is fully mixed with the liquid inside the venturi tube body 1 to form micro-nano bubble hydrogen-rich water. Micro-nano bubble hydrogen-rich water is widely used in the fields of medicine and health, and aquaculture. In the fields of medicine and health, micro-nano bubble hydrogen-rich water can be used for auxiliary treatment of psoriasis, organ inflammation, and cardiovascular disease. In the field of aquaculture, because its micro-nano bubbles can greatly increase the gas content in the water, and the gas is not easy to volatilize, and the hydroxyl free radicals generated when the bubbles burst can kill viruses and bacteria in the water, it is widely used in aquaculture to improve water quality and improve breeding efficiency.

[0050] Please refer to Figures 1 to 8As shown, an automatic booster pump 1011 for supplying water to the inside of the Venturi tube body 1 is installed on the side of the Venturi tube body 1 and at the position corresponding to the water inlet pipe 101, and a liquid flow meter 1012 for liquid flow statistics is installed on the inlet pipe of the automatic booster pump 1011;

[0051] By adopting the above technical solution, by setting the automatic booster pump 1011, sufficient pressure can be provided to make the liquid pass through the venturi tube at a higher speed, which has an important influence on the generation effect of micro-nano bubbles. At the same time, the high-performance high-pressure water pump can provide a stable high-pressure water flow to ensure the stability of the generation of micro-nano bubbles. At the same time, the pressure output by the high-pressure water pump can be adjusted according to actual needs to adapt to different working conditions and micro-nano bubble generation requirements, and the flow state of the liquid in the venturi tube can be accurately controlled, thereby ensuring the generation effect of micro-nano bubbles;

[0052] The liquid flow meter 1012 can monitor the flow of the liquid in real time, so that the operator can adjust the supply of the liquid as needed to ensure that the liquid flow is within a suitable range, which is critical to the quality and quantity of the generation of micro-nano bubbles.

[0053] Please refer to Figures 1 to 8 As shown, an anti-backflow assembly 103 for preventing liquid reflux is installed inside the air inlet pipe 102. The anti-backflow assembly 103 includes a sealing ring 1031 fixedly connected to the inner wall of the air inlet pipe 102, a mounting frame 1032 fixedly connected to the bottom of the sealing ring 1031, two symmetrically arranged return springs 1033 fixedly connected to the mounting frame 1032, and a sealing plate 1034 used in conjunction with the sealing ring 1031 fixedly connected to the top of the two return springs 1033. In the countercurrent component 103, when the gas is discharged through the top of the intake pipe 102, the pressure of the gas will squeeze the sealing plate 1034 and make the sealing plate 1034 separate from the seal on the sealing ring 1031, thereby ensuring that the gas can be normally blown into the venturi tube body 1. Once there is liquid in the venturi tube body that wants to flow back upward from the bottom of the intake pipe 102, the elastic force of the return spring 1033 will drive the sealing plate 1034 to block the sealing ring 1031, thereby effectively preventing the liquid from flowing back.

[0054] Please refer to Figures 1 to 8 As shown, both sides of the sealing plate 1034 are fixedly connected with a limiting slider 10341, and a limiting groove 10342 matching the limiting slider 10341 is provided on the inner wall of the mounting frame 1032 and corresponding to the position of the limiting slider 10341. The limiting slider 10341 and the limiting groove 10342 are provided to limit the sealing plate 1034, thereby increasing the stability of the movement of the sealing plate 1034.

[0055] Please refer to Figures 1 to 8As shown, an air compressor 104 for increasing the intake pressure is also installed on the top of the intake pipe 102. By setting the air compressor 104, the gas passing through the intake pipe 102 can be pressurized, so that more gas can be pressed into the venturi tube to mix with the liquid. At the throat 12 of the venturi tube, due to the fast liquid flow rate and low pressure, the pressurized gas is more likely to enter the liquid under the action of the pressure difference and fully mix with the liquid, which helps to increase the generation of micro-nano bubbles and, to a certain extent, can also better control the size and generation efficiency of the bubbles.

[0056] Please refer to Figures 1 to 8 As shown, a gas flow meter 105 and a gas pressure gauge 1051 for detecting the intake volume and intake pressure are installed in sequence on the side of the intake pipe 102. The gas flow meter 105 and the gas pressure gauge 1051 are set to measure the flow rate and pressure of the incoming gas, so that the operator can control the gas supply and ensure that the gas flow rate and pressure match the flow rate and pressure of the liquid, thereby ensuring the generation effect of micro-nano bubbles.

[0057] Please refer to Figures 1 to 8 As shown, a fixing frame 1062 for installing a cutting blade 106 is fixedly connected to the inner wall of the venturi tube body 1, a driving shaft 1061 is rotatably installed on the fixing frame 1062 through a bearing, and the end of the driving shaft 1061 is fixedly connected to the cutting blade 106, and one end of the driving shaft 1061 away from the cutting blade 106 is fixedly connected to a driving impeller 1063 for driving the cutting blade 106, and a cutting blade 106 is arranged inside the venturi tube body 1. When the gas-liquid mixture enters the venturi tube body 1, it will be sheared by the cutting blade 106, which can make the passing fluid form a rotating fluid, increase the shear force of the gas-liquid mixture, and further break and refine the initially formed bubbles, making their size smaller, close to the nanometer level.

[0058] Please refer to Figures 1 to 8 As shown, a bearing kit 1064 is rotatably installed on the driving shaft 1061, and the top of the bearing kit 1064 is fixedly connected to a limiting rod 1065, and the top of the limiting rod 1065 is fixedly connected to the inner wall of the venturi tube body 1. By arranging the bearing kit 1064 and the limiting rod 1065, a limiting effect is played on the driving shaft 1061, thereby increasing the stability of the driving shaft 1061 driving the cutting blade 106 to rotate.

[0059] Please refer to Figures 1 to 8As shown, a limiting ring 1071 for limiting the porous membrane 107 is fixedly connected on the inner wall of the venturi tube body 1 and at a position corresponding to the porous membrane 107, a sealing end cover 1072 is arranged on the side of the venturi tube body 1 and at a position corresponding to the porous membrane 107, and the sealing end cover 1072 is fixedly connected to the side of the venturi tube body 1 by installing bolts 10721, and a collecting tube 108 is also installed on the sealing end cover 1072. The porous membrane 107 is arranged, and its interception particle size is usually 0.1 to 10 μm. After the gas-liquid mixture is sheared by the cutting blade 106, it is further sheared by the porous membrane 107 for the second time to further reduce the size of the bubbles, and finally form micro-nano bubbles, which are discharged from the collecting tube 108.

[0060] Please refer to Figures 1 to 8 As shown, a side of the sealing end cap 1072 close to the porous membrane 107 is fixedly connected with an abutment ring 10722, and the side of the abutment ring 10722 close to the porous membrane 107 abuts against the side surface of the porous membrane 107. The abutment ring 10722 is provided to increase the stability of the porous membrane 107 installed inside the venturi tube body 1.

[0061] Please refer to Figures 1 to 8 As shown, a control module 2 is also provided on the venturi tube body 1, and the control module 2 is used to control parameters such as gas flow, liquid flow, high-pressure water pump output pressure and action time. Through these control systems, each link in the micro-nano bubble generation process can be accurately adjusted to meet different application requirements.

[0062] The working principle of the present invention is: when the liquid flows through the contraction section of the venturi tube at a high speed 11, the flow rate increases, the pressure decreases, and negative pressure is generated. Under the attraction of the negative pressure, the external gas is sucked into the liquid. Subsequently, in the pipeline, the liquid and the gas are fully mixed and broken into micro-nano bubbles; when the gas is introduced through the air inlet pipe 102, by setting the anti-backflow component 103, when the gas is discharged through the top of the air inlet pipe 102, the pressure of the gas will squeeze the sealing plate 1034, and make the sealing plate 1034 break away from the seal on the sealing ring 1031, so as to ensure that the gas is normally blown into the venturi tube body 1, and once there is liquid in the venturi tube body that wants to flow back upward from the bottom of the air inlet pipe 102, under the elastic force of the return spring 1033, the sealing plate 1034 will be driven to block the sealing ring 1031, thereby effectively preventing the liquid from flowing back; when the water flows through the venturi tube body 1, it will drive the driving The impeller 1063 generates an impact, which in turn drives the driving impeller 1063 to rotate, and can provide power for the cutting blade 106. Therefore, the fluid passing through can be sheared by the cutting blade 106 to form a rotating fluid, thereby increasing the shear force of the gas-liquid mixture, and further breaking and refining the initially formed bubbles to make them smaller in size, close to the nanometer level, and without the need for additional power, which is more energy-saving and environmentally friendly. By setting a porous membrane 107, the retention particle size of which is usually 0.1 to 10 μm, the gas-liquid mixture is sheared by the cutting blade 106 and then subjected to secondary shearing by the porous membrane 107, so as to further reduce the size of the bubbles, and finally form micro-nano bubbles, which are discharged from the collecting tube 108. Moreover, by loosening the mounting bolts 10721, the sealing end cover 1072 can be disassembled, thereby facilitating the disassembly and assembly of the porous membrane 107, and facilitating the maintenance or replacement of the porous membrane 107.

[0063] The above description shows and describes several preferred embodiments of the present invention, but as before, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept of this article through the above teachings or the technology or knowledge of the relevant field. And the changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method, comprising a venturi tube body (1) for generating micro-nano bubbles, characterized in that: A water inlet pipe (101) is installed at one end of the venturi tube body (1), an air inlet pipe (102) capable of preventing liquid backflow is installed at the throat (12) of the venturi tube body (1), a cutting blade (106) for breaking and refining micro-nano bubbles is installed inside the venturi tube body (1), and a detachable porous membrane (107) is also installed inside the venturi tube body (1).

2. The gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method according to claim 1, characterized in that: An automatic booster pump (1011) for supplying water to the inside of the Venturi tube body (1) is installed on the side of the Venturi tube body (1) and at a position corresponding to the water inlet pipe (101), and a liquid flow meter (1012) for liquid flow statistics is installed on the inlet pipe of the automatic booster pump (1011).

3. The gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method according to claim 2, characterized in that: An anti-backflow component (103) for preventing liquid backflow is installed inside the air intake pipe (102), and the anti-backflow component (103) comprises a sealing ring (1031) fixedly connected to the inner wall of the air intake pipe (102), a mounting frame (1032) is fixedly connected to the bottom of the sealing ring (1031), two symmetrically arranged return springs (1033) are fixedly connected to the mounting frame (1032), and a sealing plate (1034) used in conjunction with the sealing ring (1031) is fixedly connected to the top of the two return springs (1033).

4. The gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method according to claim 3, characterized in that: Both sides of the sealing plate (1034) are fixedly connected to a limiting slider (10341), and a limiting sliding groove (10342) matching the limiting slider (10341) is provided on the inner wall of the mounting frame (1032) and at a position corresponding to the limiting slider (10341).

5. The gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method according to claim 4, characterized in that: An air compressor (104) for increasing the intake pressure is also installed on the top of the intake pipe (102).

6. The gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method according to claim 5, characterized in that: A gas flow meter (105) and a gas pressure meter (1051) for detecting the intake air volume and intake air pressure are sequentially installed on the side of the intake pipe (102).

7. The gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method according to claim 6, characterized in that: A fixing frame (1062) for mounting the cutting blade (106) is fixedly connected to the inner wall of the venturi tube body (1), a driving shaft (1061) is rotatably mounted on the fixing frame (1062) via a bearing, and an end of the driving shaft (1061) is fixedly connected to the cutting blade (106), and a driving impeller (1063) for driving the cutting blade (106) is fixedly connected to one end of the driving shaft (1061) away from the cutting blade (106).

8. The gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method according to claim 7, characterized in that: A bearing set (1064) is rotatably mounted on the driving shaft (1061), the top of the bearing set (1064) is fixedly connected to a limiting rod (1065), and the top of the limiting rod (1065) is fixedly connected to the inner wall of the venturi tube body (1).

9. The gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method according to claim 8, characterized in that: A limiting ring (1071) for limiting the position of the porous membrane (107) is fixedly connected on the inner wall of the venturi tube body (1) and corresponds to the position of the porous membrane (107). A sealing end cover (1072) is provided on the side of the venturi tube body (1) and corresponds to the position of the porous membrane (107). The sealing end cover (1072) is fixedly connected to the side of the venturi tube body (1) by means of mounting bolts (10721). A collecting pipe (108) is also mounted on the sealing end cover (1072).

10. The gas dissolving device for generating micro-nano bubbles by using a gas-liquid dual high-pressure jet method according to claim 9, characterized in that: A side of the sealing end cap (1072) close to the porous membrane (107) is fixedly connected with an abutment ring (10722), and a side of the abutment ring (10722) close to the porous membrane (107) abuts against a side surface of the porous membrane (107).

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