Intelligent adjustable micro-nano bubble generating device

Abstract

The utility model discloses an intelligent adjustable micro-nano bubble generating device, which comprises a Venturi tube main body, the Venturi tube main body is sequentially provided with a converging section, a throat section and a diffusion section along the water inlet direction, and the throat section is connected with an air inlet pipe; a throat diameter control mechanism, the throat diameter control mechanism comprises two first sealing plates, and a throat diameter control assembly is arranged between each first sealing plate and the inner wall of the throat section; a converging angle control mechanism, which is arranged between the first sealing plate and the converging section; a diffusion angle control mechanism; a flow monitoring and control module, a valve is installed at the water inlet end of the Venturi tube main body; a pressure monitoring module, which is arranged in the converging section, the throat section and the diffusion section. The utility model can independently control the structural parameters such as the converging angle, the throat diameter and the diffusion angle of the Venturi tube in the micro-nano bubble hydraulic cavitation generation process, so as to realize the purpose of generating micro-nano bubbles with different particle size distribution and concentration.

Description

Technical Field

[0001] This utility model relates to the field of bubble generating equipment technology, and in particular to an intelligent adjustable micro-nano bubble generating device. Background Technology

[0002] Micro- and nano-bubbles possess strong mass transfer efficiency and can remain in water for extended periods, leading to their widespread application in water treatment, chemical engineering, pharmaceuticals, agriculture, and mineral flotation. Consequently, micro- and nano-bubble generators have been extensively used in these fields.

[0003] Venturi tubes, as a type of device for generating micro- and nano-bubbles through hydraulic cavitation, have the advantages of simple structure and low operating cost, and are widely used in industrial fields. However, traditional Venturi tubes suffer from fixed and unadjustable structural parameters, and their relationship with the size distribution, concentration, and other properties of the generated micro- and nano-bubbles is unclear. Therefore, designing a Venturi tube with flexible and adjustable structural parameters is essential for achieving precise control over the properties of micro- and nano-bubbles generated by hydraulic cavitation.

[0004] Traditional venturi tubes, when used for hydraulic cavitation to generate micro-nano bubbles, suffer from poor cavitation effects and difficulty in precisely controlling the concentration and size of micro-nano bubbles. Based on this, this invention provides an intelligent and adjustable micro-nano bubble generator. Utility Model Content

[0005] The purpose of this invention is to provide an intelligent and adjustable micro / nano bubble generator to solve the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides an intelligent adjustable micro / nano bubble generator, comprising:

[0007] The Venturi tube body is symmetrically and sealed between two flat plates with the center line of the water flow pipe as the axis. The Venturi tube body has a converging section, a throat section, and a diffuser section in sequence along the water inlet direction. The throat section is connected to an air inlet pipe.

[0008] A throat diameter control mechanism, comprising two first sealing plates, the two first sealing plates being symmetrically arranged within the throat segment, and throat diameter control components being respectively provided between the first sealing plates and the inner wall of the throat segment.

[0009] A convergence angle control mechanism is disposed between the first sealing plate and the convergence section, and is used to adjust the angle value of the convergence angle;

[0010] A diffusion angle control mechanism is disposed between the first sealing plate and the diffusion section, and is used to adjust the diffusion angle value;

[0011] A flow monitoring and control module is installed in the convergence section to monitor the flow rate of the water passing through. A valve is installed at the inlet end of the venturi tube body to control the inlet flow rate.

[0012] A pressure monitoring module is installed in the convergence section, throat section and diffuser section to monitor the pressure change of water flow before and after passing through the venturi tube.

[0013] The valve, throat diameter control mechanism, convergence angle control mechanism, diffusion angle control mechanism, flow monitoring and control module, and pressure monitoring module are all connected to the controller.

[0014] According to the intelligent adjustable micro / nano bubble generator provided by this utility model, the diameter control component includes:

[0015] A bracket, which is fixed to a fixed back plate on the outside of the first sealing plate;

[0016] A threaded rod is vertically slidably connected to the bracket, and a nut is threadedly connected to the threaded rod. One end of the threaded rod is fixedly connected to the first sealing plate. A motor drives the nut to rotate. Since the nut is threadedly connected to the threaded rod and the threaded rod is vertically slidably connected to the bracket, the rotation of the nut drives the threaded rod to move vertically, thereby automatically controlling the movement of the first sealing plate and achieving precise control of the throat diameter.

[0017] According to the intelligent adjustable micro / nano bubble generator provided by this utility model, the convergence angle control mechanism includes:

[0018] The second sealing plate is provided in two sets, and the two sets of the second sealing plate are symmetrically arranged between the top wall and the bottom wall of the converging section. The second sealing plate is rotatably connected to the first sealing plate to ensure that the rotation of the second sealing plate will not cause the displacement of the first sealing plate. The sides of the second sealing plate are provided with tracks.

[0019] The third sealing plate, which is close to the convergent section, forms a sliding connection with the track of the second sealing plate, and the second sealing plate, the third sealing plate, and the first sealing plate are arranged in a Z-shaped structure.

[0020] The second motor is located outside the third sealing plate and is used to control the movement of the third sealing plate.

[0021] According to the intelligent adjustable micro / nano bubble generator provided by this utility model, the diffusion angle control mechanism includes:

[0022] The fourth sealing plate is provided in two sets, and the two sets of the fourth sealing plate are symmetrically arranged between the top wall and the bottom wall of the diffusion section. The fourth sealing plate is rotatably connected to the first sealing plate to ensure that the rotation of the fourth sealing plate will not cause the displacement of the first sealing plate. The sides of the fourth sealing plate are provided with tracks.

[0023] The fifth sealing plate, which is close to the diffusion section, forms a sliding connection with the track of the fourth sealing plate, and the fifth sealing plate, the fourth sealing plate, and the first sealing plate are arranged in a Z-shaped structure.

[0024] The third motor is located outside the fifth sealing plate and is used to control the movement of the fifth sealing plate.

[0025] According to the intelligent adjustable micro-nano bubble generator provided by this utility model, the third sealing plate and the fifth sealing plate are respectively sealed and installed in the double-layer clamping groove.

[0026] According to the intelligent adjustable micro / nano bubble generator provided by this utility model, the flow monitoring and control module includes a flow meter, which is installed in the convergence section.

[0027] According to the intelligent adjustable micro / nano bubble generator provided by this utility model, the pressure monitoring module includes a pressure sensor, which is arranged in the convergence section, the throat section and the diffusion section.

[0028] According to the intelligent adjustable micro-nano bubble generator provided by this utility model, the valve is an electromagnetic valve used to control the inlet water flow rate.

[0029] According to the intelligent adjustable micro-nano bubble generator provided by this utility model, the inner sides of the second sealing plate and the fourth sealing plate are respectively processed with tracks, and the second sealing plate and the fourth sealing plate slide in the convergence section and the diffusion section respectively through the tracks.

[0030] The present invention discloses the following technical effects:

[0031] The controller in this invention is connected to the motors in the throat diameter control mechanism, convergence angle control mechanism, and diffusion angle control mechanism. The controller controls the motors to move the moving parts in these mechanisms, thereby achieving independent and precise adjustment of the Venturi tube's convergence angle, throat diameter, and diffusion angle. Changes in the throat diameter directly affect the water flow velocity and pressure distribution, thus altering the air-water mixing state and shear force. The convergence and diffusion angles affect the flow pattern and energy conversion of water within the Venturi tube. The pressure monitoring module monitors the water pressure changes in the convergence, throat, and diffusion sections in real time, providing data to the computer control system. The flow monitoring and control module monitors the inlet flow rate in real time and can also control the inlet flow rate via valves as required. By adjusting and controlling these parameters to form a database, precise control of the hydraulic cavitation effect during bubble generation can be achieved, generating micro- and nano-bubbles with different particle size distributions and concentrations. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the intelligent adjustable micro / nano bubble generator of this utility model;

[0034] Figure 2 This is a schematic diagram of the cross-sectional structure of the second sealing plate and the fourth sealing plate in this utility model;

[0035] Figure 3 This is a schematic diagram of the planar structure of the second sealing plate and the fourth sealing plate in this utility model;

[0036] Figure 4 This is a schematic diagram of the structure of the third and fifth sealing plates in this utility model;

[0037] Figure 5 A frontal cross-sectional view of a micro / nano bubble generator consisting of three sets of intelligent adjustable venturi tubes connected in parallel.

[0038] Figure 6 Left view of a micro / nano bubble generator consisting of three sets of intelligent adjustable venturi tubes connected in parallel;

[0039] Figure 7 This is a schematic diagram of a micro / nano bubble generator consisting of three sets of intelligent adjustable venturi tubes connected in parallel.

[0040] The components are as follows: 1. Venturi tube body; 2. Converging section; 3. Throat section; 4. Diverging section; 5. Support; 6. Threaded rod; 7. Nut; 8. First sealing plate; 9. Second sealing plate; 10. Third sealing plate; 11. Fourth sealing plate; 12. Fifth sealing plate; 13. Inlet pipe; 14. Double-layer clamping groove. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Reference Figures 1-6 This utility model provides an intelligent adjustable micro / nano bubble generator, comprising:

[0044] The Venturi tube body 1 is symmetrically and sealed between two flat plates with the center line of the water flow pipe as the axis. Inside the Venturi tube body 1, along the water inlet direction, there are converging section 2, throat section 3, and diffuser section 4. The throat section 3 is connected to the air inlet pipe 13.

[0045] The throat diameter control mechanism includes two first sealing plates 8, which are symmetrically arranged in the throat section 3. Throat diameter control components are respectively provided between the first sealing plates 8 and the inner wall of the throat section 3.

[0046] A convergence angle control mechanism is located between the first sealing plate 8 and the convergence section 2, and is used to adjust the angle value of the convergence angle.

[0047] A diffusion angle control mechanism is located between the first sealing plate 8 and the diffusion section 4, and is used to adjust the diffusion angle value.

[0048] The flow monitoring and control module is located in the convergence section 2 and is used to monitor the flow rate of the water passing through. A valve is installed at the inlet end of the venturi tube body to control the inlet flow rate.

[0049] The pressure monitoring module is installed in the convergence section 2, the throat section 3 and the diffuser section 4 to monitor the pressure changes of the water flow before and after passing through the venturi tube.

[0050] Among them, the valve, throat diameter control mechanism, convergence angle control mechanism, diffusion angle control mechanism, flow monitoring and control module, and pressure monitoring module are all connected to the controller.

[0051] Before starting the foaming process, a comprehensive inspection of the intelligent adjustable micro / nano bubble generator is required to ensure that all components are tightly connected and undamaged, and that the Venturi tube body 1, throat diameter control mechanism, convergence angle control mechanism, and diffusion angle control mechanism are all in normal working condition. After confirming that everything is in order, the device power is turned on, the entire system is started, the controller begins to run, and all monitoring modules enter standby mode. According to the actual application requirements, the desired micro / nano bubble generation parameters are input through the human-machine interface connected to the controller, including the target water flow rate, target water pressure, ideal throat diameter, convergence angle, and diffusion angle. These parameters will serve as the basis for the operation and adjustment of the device. After receiving the set throat diameter parameters, the controller sends a command to the throat diameter control mechanism. The diameter control component starts working, driving the first motor to control the movement of the two symmetrically arranged first sealing plates 8 within the throat section 3. During the movement, the first sealing plates 8 gradually change the effective flow area of ​​the throat section 3, thereby achieving precise adjustment of the throat diameter until the set throat diameter value is reached. Simultaneously or subsequently, the controller sends a control signal to the convergence angle control mechanism based on the set convergence angle. The convergence angle control mechanism then operates, adjusting the relative positions of the second sealing plate 9 and the third sealing plate 10 to change the shape of the convergence section 2, thereby adjusting the convergence angle value to meet the set requirements. Similarly, the controller sends a command to the diffusion angle control mechanism based on the set diffusion angle. The diffusion angle control mechanism, through corresponding actions, adjusts the structure between the fourth sealing plate 11 and the fifth sealing plate 12, changing the shape of the diffusion section 4, and adjusting the diffusion angle value to the set value.

[0052] After the device starts operating, the flow monitoring and control module located in the convergence section 2 monitors the water flow rate in real time. The flow monitoring and control module transmits the collected water flow data to the controller in the form of electrical signals. The controller analyzes and processes the received flow data, compares it with the set target water flow rate, and adjusts the inlet flow rate to the set value through the valve at the inlet end. Simultaneously, the pressure monitoring modules located in the convergence section 2, throat section 3, and diffuser section 4 continuously monitor the water flow pressure. The pressure monitoring modules convert the monitored water flow pressure data into electrical signals and send them to the controller. The controller analyzes the pressure data and compares it with the set target water flow pressure. When the actual water flow pressure detected by the pressure monitoring module is inconsistent with the set target water flow pressure, the controller will also analyze and judge according to the specific situation and send adjustment signals to the relevant control mechanisms. For example, if the actual water flow pressure is lower than the target water flow pressure, the controller may adjust the diffuser angle control mechanism to change the diffuser angle, thereby affecting the pressure change of the water flow in the diffuser section 4 and making the actual water flow pressure approach the target water flow pressure. When parameters such as water flow rate, water pressure, throat diameter, convergence angle, and diffusion angle are all stable near their set values, the device enters a stable hydraulic cavitation foaming stage. At this time, water enters the convergence section 2 from the inlet of the Venturi tube body 1. Within the convergence section 2, the water velocity gradually increases and the pressure decreases. When the water flows into the throat section 3, due to its smaller diameter, the water velocity is fastest and the pressure is lowest. Under negative pressure, air is drawn into the throat section 3 through the air inlet pipe 13 and thoroughly mixed with the high-speed flowing water. Subsequently, the water mixed with air enters the diffusion section 4. Within the diffusion section 4, the water velocity gradually decreases and the pressure gradually increases. The air is further sheared and refined in the water flow, forming a large number of micro- and nano-sized bubbles, which are then discharged from the outlet of the Venturi tube body 1 with the water flow, completing the entire foaming process. After the foaming process is complete, a stop command is sent to the controller via the human-machine interface. The controller sequentially sends stop signals to each control mechanism, causing the throat diameter control mechanism, convergence angle control mechanism, and diffusion angle control mechanism to stop operating. At the same time, close the water inlet valve to stop supplying water to the device. After the water in the device is drained, disconnect the power supply to the device to complete the entire foaming process.

[0053] Further optimization of the scheme includes the following diameter control components:

[0054] Bracket 5 is fixed to the fixing back plate on the outside of the first sealing plate 8;

[0055] The threaded rod 6 is vertically slidably connected to the bracket 5. The nut 7 is threadedly connected to the threaded rod 6, and one end of the threaded rod 6 is fixedly connected to the first sealing plate 8.

[0056] When the throat diameter needs to be adjusted, an external control system (such as a controller) sends a command to the drive mechanism (such as a first motor) connected to the nut 7, and the motor drives the nut 7 to rotate. Since the nut 7 is threadedly connected to the threaded rod 6, and the threaded rod 6 is vertically slidably connected to the bracket 5, the rotation of the nut 7 will drive the threaded rod 6 to move vertically. One end of the threaded rod 6 is fixedly connected to the first sealing plate 8, so the movement of the threaded rod 6 will cause the first sealing plate 8 to slide horizontally within the throat section 3, thereby changing the effective flow area of ​​the throat section 3 and realizing the adjustment of the throat diameter.

[0057] Different throat diameters affect the velocity and pressure of water flow in throat section 3, which in turn affects the amount of air intake and the bubble generation effect. By precisely adjusting the throat diameter, the bubble size and output can be optimized according to actual needs.

[0058] The scheme has been further optimized, and the convergence angle control mechanism includes:

[0059] The second sealing plate 9 has two sets of second sealing plates, which are symmetrically arranged between the top and bottom walls of the converging section. The second sealing plate is rotatably connected to the first sealing plate to ensure that the rotation of the second sealing plate will not cause the displacement of the first sealing plate 8. The sides of the second sealing plate 9 are all equipped with tracks.

[0060] The third sealing plate 10, which is close to the convergence section, forms a sliding connection with the track of the second sealing plate 9, and the second sealing plate 9, the third sealing plate 10, and the first sealing plate 8 are arranged in a Z-shaped structure.

[0061] The second motor is positioned outside the third sealing plate and controls its movement. When the convergence angle needs adjustment, the controller sends a command to the second motor, which drives the third sealing plate 10 to move horizontally. One end of the second sealing plate 9 is rotatably connected to the first sealing plate 8, and the other end is slidably connected to the third sealing plate 10 of the convergence section 2 via a track. The first sealing plate 8, the second sealing plate 9, and the third sealing plate 10 are arranged in a Z-shaped structure. The movement of the first sealing plate 8 causes the second sealing plate 9 to rotate in the convergence section 2. After the position of the first sealing plate 8 is fixed, the forward and backward movement of the third sealing plate 10 will push the second sealing plate 9 to rotate, thereby changing the shape of the convergence section 2 and achieving the adjustment of the convergence angle.

[0062] The size of the convergence angle affects the acceleration effect and pressure change of the water flow in the convergence section 2, thus influencing the initial conditions for bubble formation. By adjusting the convergence angle, the hydrodynamic characteristics during bubble formation can be optimized.

[0063] The scheme has been further optimized, and the diffusion angle control mechanism includes:

[0064] The fourth sealing plate is provided in two sets, and the two sets of fourth sealing plates are symmetrically arranged between the top wall and the bottom wall of the diffuser section. The fourth sealing plate is rotatably connected to the first sealing plate to ensure that the rotation of the fourth sealing plate will not cause the displacement of the first sealing plate. The sides of the fourth sealing plate are provided with tracks.

[0065] The fifth sealing plate, which is close to the diffuser section, forms a sliding connection with the track of the fourth sealing plate, and the fifth sealing plate, the fourth sealing plate, and the first sealing plate are arranged in a Z-shaped structure.

[0066] The third motor is located on the outside of the fifth sealing plate and is used to control the movement of the fifth sealing plate.

[0067] The third motor is positioned outside the fifth sealing plate and controls its movement. When the convergence angle needs adjustment, the controller sends a command to the third motor, which drives the fifth sealing plate 12 to move horizontally. One end of the fourth sealing plate 11 is rotatably connected to the first sealing plate 8, and the other end is slidably connected to the fifth sealing plate 12 of the diffuser section 3 via a track. The first sealing plate 8, fourth sealing plate 11, and fifth sealing plate 12 are arranged in a Z-shaped structure. The movement of the first sealing plate 8 causes the fourth sealing plate 11 to rotate in the diffuser section 3. After the first sealing plate 8 is fixed in position, the forward and backward movement of the fifth sealing plate 12 pushes the fourth sealing plate 11 to rotate, thereby changing the shape of the diffuser section 3 and achieving adjustment of the diffusion angle.

[0068] The size of the diffusion angle affects the deceleration effect and pressure recovery of the water flow in diffusion section 4, which in turn affects the stability and final particle size of the bubbles. By adjusting the diffusion angle, it can be ensured that the gas can be fully cavitated within diffusion section 4.

[0069] By comprehensively adjusting parameters such as flow rate, pressure, convergence angle, throat diameter, and diffusion angle, the bubbles generated by the equipment can meet the required particle size and concentration requirements.

[0070] The scheme has been further optimized. The flow monitoring and control module includes a flow meter, which is installed in the convergence section 2.

[0071] The scheme was further optimized, and the pressure monitoring module includes a pressure sensor, which is arranged in the convergence section 2, the throat section 3, and the diffusion section 4.

[0072] The design was further optimized by using solenoid valves.

[0073] The scheme was further optimized, with the third sealing plate 10 and the fifth sealing plate 12 respectively sealed and installed in the double-layer clamping groove 14.

[0074] An electromagnetic flowmeter, model LDG-S, was selected. It boasts advantages such as high measurement accuracy, good stability, and insensitivity to changes in fluid density, viscosity, temperature, pressure, and conductivity. The measurement range is selected based on the actual water flow rate, typically 0-10m. 3 / h, with an accuracy class of 0.5. The flow meter is installed in the convergence section 2 via a flange connection.

[0075] The pressure sensor is a diffused silicon pressure sensor, model CYB-20S, which features high measurement accuracy, fast response speed, and strong anti-interference ability. The measurement range is selected according to the actual water flow pressure range, generally 0-1MPa, with an accuracy class of 0.25. The pressure sensor is installed in the convergence section 2, throat section 3, and diffuser section 4 via threaded connections.

[0076] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0077] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An intelligent adjustable micro-nano bubble generating device, characterized in that, include: The Venturi tube body (1) is symmetrically sealed between two flat plates with the center line of the water flow pipe as the axis. The Venturi tube body (1) has a converging section (2), a throat section (3), and a diffuser section (4) in sequence along the water inlet direction. The throat section (3) is connected to an air inlet pipe (13). The throat diameter control mechanism includes two first sealing plates (8), which are symmetrically arranged in the throat section (3). Throat diameter control components are respectively provided between the first sealing plates (8) and the inner wall of the throat section (3). A convergence angle control mechanism is provided between the first sealing plate (8) and the convergence segment (2) for adjusting the angle value of the convergence angle. A diffusion angle control mechanism is disposed between the first sealing plate (8) and the diffusion section (4) for adjusting the angle value of the diffusion angle; The flow monitoring and control module is set in the convergence section (2) to monitor the flow rate of the water passing through. A valve is installed at the water inlet end of the venturi tube body to control the water inlet flow rate. The pressure monitoring module is set in the convergence section (2), the throat section (3) and the diffusion section (4) to monitor the change in water flow pressure before and after passing through the Venturi tube; The valve, throat diameter control mechanism, convergence angle control mechanism, diffusion angle control mechanism, flow monitoring and control module, and pressure monitoring module are all connected to the controller. 2.The intelligent adjustable micro-nano bubble generating device according to claim 1, characterized in that, The diameter control component includes: The bracket (5) is fixed on the fixing back plate on the outside of the first sealing plate (8); A threaded rod (6) is vertically slidably connected to the bracket (5). A nut (7) is threadedly connected to the threaded rod (6). One end of the threaded rod (6) is fixedly connected to the first sealing plate (8). The rotation of the nut (7) drives the threaded rod (6) to rotate, thereby realizing manual control of the movement of the first sealing plate (8). The first motor is arranged above the threaded rod (6) to automatically control the movement of the first sealing plate (8) and achieve precise control of the throat diameter. 3.The intelligent adjustable micro-nano bubble generating device according to claim 1, characterized in that, The convergence angle control mechanism includes: The second sealing plate (9) is provided in two sets. The two sets of the second sealing plates (9) are symmetrically arranged between the top wall and the bottom wall of the converging section (2). The second sealing plate (9) is rotatably connected to the first sealing plate (8) to ensure that the rotation of the second sealing plate (9) will not cause the displacement of the first sealing plate. The sides of the second sealing plate (9) are all provided with tracks. The third sealing plate (10) near the convergence section (2) forms a sliding connection with the track of the second sealing plate (9), and the second sealing plate (9), the third sealing plate (10), and the first sealing plate (8) are arranged in a Z-shaped structure. The second motor is arranged outside the third sealing plate (10) and is used to control the movement of the third sealing plate (10). 4.The intelligent adjustable micro-nano bubble generating device according to claim 3, characterized in that, The diffusion angle control mechanism includes: The fourth sealing plate (11) is provided in two sets. The two sets of the fourth sealing plates (11) are symmetrically arranged between the top wall and the bottom wall of the diffusion section (4). The fourth sealing plate (11) is rotatably connected to the first sealing plate (8) to ensure that the rotation of the fourth sealing plate (11) will not cause the displacement of the first sealing plate. The sides of the fourth sealing plate (11) are all provided with tracks. The fifth sealing plate (12) is close to the diffusion section (4) and forms a sliding connection with the track of the fourth sealing plate (11), and the fifth sealing plate (12), the fourth sealing plate (11) and the first sealing plate (8) are arranged in a Z-shaped structure. The third motor is arranged outside the fifth sealing plate (12) and is used to control the movement of the fifth sealing plate (12). 5.The intelligent adjustable micro-nano bubble generating device according to claim 1, wherein, The flow monitoring and control module includes a flow meter, which is installed in the convergence section (2).

6. The intelligent adjustable micro / nano bubble generator according to claim 1, characterized in that, The pressure monitoring module includes a pressure sensor arranged in the convergence section (2), the throat section (3), and the diffusion section (4).

7. The intelligent adjustable micro / nano bubble generator according to claim 1, characterized in that, The valve is a solenoid valve used to control the inlet water flow.

8. The intelligent adjustable micro / nano bubble generator according to claim 4, characterized in that, The second sealing plate (9) and the fourth sealing plate (11) are respectively processed with tracks on their inner sides. The second sealing plate (9) and the fourth sealing plate (11) slide in the convergence section (2) and the diffusion section (4) respectively through the tracks.

9. The intelligent adjustable micro / nano bubble generator according to claim 4, characterized in that, The third sealing plate (10) and the fifth sealing plate (12) are respectively sealed and installed in the double-layer clamping groove (14).

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