Intelligent adjustable micro-nano bubble generating device

Abstract

The invention discloses an intelligent adjustable micro-nano bubble generating device which comprises a Venturi tube main body, a convergent section, a throat pipe section and a diffusion section are sequentially arranged in the Venturi tube main body in the water inlet direction, and the throat pipe section is connected with an air inlet pipe; the throat pipe diameter control mechanism comprises two first sealing plates, and throat pipe diameter control assemblies are arranged between the first sealing plates and the inner wall of the throat pipe section; the convergence angle control mechanism is arranged between the first sealing plate and the convergence section; a spread angle control mechanism; a valve is mounted at the water inlet end of the Venturi tube main body; and the pressure monitoring modules are arranged in the convergence section, the throat pipe section and the diffusion section. According to the invention, structural parameters such as a convergence angle, a throat pipe diameter and a divergence angle of the venturi tube in a micro-nano bubble hydrodynamic cavitation generation process can be independently controlled, so that the purpose of generating micro-nano bubbles with different particle size distributions and concentrations is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of bubble generating equipment, and particularly to an intelligent adjustable micro-nano bubble generating device. Background Art

[0002] Micro-nano bubbles have strong mass transfer efficiency and physical and chemical characteristics such as long residence time in water, resulting in their wide application in the fields of water treatment, chemical engineering, medicine, agriculture, and mineral flotation. Therefore, micro-nano bubble generating devices have been widely used in the above fields.

[0003] As a type of device for generating micro-nano bubbles by hydrodynamic cavitation, the Venturi tube has the advantages of simple structure and low operating cost, and is widely used in the industrial field. However, the traditional Venturi tube has the problems that its structural parameters are fixed and cannot be adjusted, and the relationship between the size distribution and concentration of the micro-nano bubbles generated by cavitation is unclear. Therefore, it is very necessary to design a Venturi tube with flexible adjustable structural parameters for precise control of the properties of micro-nano bubbles generated by hydrodynamic cavitation.

[0004] When the traditional Venturi tube is used for generating micro-nano bubbles by hydrodynamic cavitation, there are problems of poor cavitation effect and difficulty in precisely controlling the concentration and size of micro-nano bubbles. Based on this, the present invention provides an intelligent adjustable micro-nano bubble generating device. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent adjustable micro-nano bubble generating device to solve the problems existing in the prior art.

[0006] To achieve the above purpose, the present invention provides the following solution: The present invention provides an intelligent adjustable micro-nano bubble generating device, including:

[0007] A Venturi tube main body, which is symmetrically and hermetically arranged between two flat plates with the center line of the water flow pipeline as the axis. Inside the Venturi tube main body, there are a converging section, a throat section, and a diffusing section in sequence along the water inlet direction. The throat section is connected with an air inlet pipe;

[0008] A throat diameter control mechanism, which includes two first sealing plates. The two first sealing plates are symmetrically arranged inside the throat section, and throat diameter control components are respectively arranged between the first sealing plates and the inner wall of the throat section;

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

[0010] A diffusing angle control mechanism, which is arranged between the first sealing plate and the diffusing section and is used to adjust the angle value of the diffusing angle;

[0011] A flow monitoring and control module is arranged in the converging section and is used for monitoring the water flow passing through. A valve is installed at the water inlet end of the Venturi tube main body for controlling the water inlet flow rate.

[0012] A pressure monitoring module is arranged in the converging section, the throat section and the diverging section and is used for monitoring the change in water flow pressure before and after passing through the Venturi tube.

[0013] Wherein, the valve, the throat diameter control mechanism, the converging angle control mechanism, the diverging angle control mechanism, the flow monitoring and control module and the pressure monitoring module are all connected to the controller.

[0014] For the intelligent adjustable micro-nano bubble generating device provided by the present invention, the diameter control assembly includes:

[0015] A bracket is fixed on the fixed back plate outside the first sealing plate;

[0016] A threaded rod is vertically slidably connected to the bracket. A nut is threadedly connected to the threaded rod. One end of the threaded rod is fixedly connected to the first sealing plate. The 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 will drive the threaded rod to move in the vertical direction for automatically controlling the movement of the first sealing plate to achieve precise control of the throat diameter.

[0017] For the intelligent adjustable micro-nano bubble generating device provided by the present invention, the converging angle control mechanism includes:

[0018] Two second sealing plates are provided. The two second sealing plates are symmetrically arranged between the top wall and the bottom wall of the converging section. The second sealing plate is rotationally 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. Tracks are arranged on the side edges of the second sealing plate;

[0019] A third sealing plate is slidably connected to the track of the second sealing plate near the converging section, and the second sealing plate, the third sealing plate and the first sealing plate are arranged in a Z-shaped structure;

[0020] A second motor is arranged outside the third sealing plate for controlling the movement of the third sealing plate.

[0021] For the intelligent adjustable micro-nano bubble generating device provided by the present invention, the diverging angle control mechanism includes:

[0022] The fourth sealing plate, there are two groups of the fourth sealing plates, and the two groups of the fourth sealing plates are symmetrically arranged between the top wall and the bottom wall of the diffuser section. The fourth sealing plate is rotationally 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. Tracks are provided on the sides of the fourth sealing plate;

[0023] The fifth sealing plate, a sliding connection is formed between the fifth sealing plate close to the diffuser section and the tracks 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 arranged 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 generating device provided by the present invention, the third sealing plate and the fifth sealing plate are respectively sealed and installed in the double-layer clamping grooves.

[0026] According to the intelligent adjustable micro-nano bubble generating device provided by the present invention, the flow rate monitoring and control module includes a flow meter, and the flow meter is installed in the converging section.

[0027] According to the intelligent adjustable micro-nano bubble generating device provided by the present invention, the pressure monitoring module includes a pressure sensor, and the pressure sensor is arranged in the converging section, the throat section, and the diffuser section.

[0028] According to the intelligent adjustable micro-nano bubble generating device provided by the present invention, the valve adopts an electromagnetic valve and is used to control the water inlet flow rate.

[0029] According to the intelligent adjustable micro-nano bubble generating device provided by the present invention, tracks are respectively machined on the inner sides of the second sealing plate and the fourth sealing plate, and the second sealing plate and the fourth sealing plate respectively slide in the converging section and the diffuser section through the tracks.

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

[0031] The controller in the present invention is connected to the motors in the throat diameter control mechanism, the convergence angle control mechanism, and the divergence angle control mechanism. The controller controls the motors to cause the movement of the moving parts in the throat diameter control mechanism, the convergence angle control mechanism, and the divergence angle control mechanism, thereby independently and precisely adjusting the convergence angle, the throat diameter, and the divergence angle of the Venturi tube. The change in the throat diameter directly affects the water flow velocity and pressure distribution, and further changes the mixing state and shear force of air and water; the convergence angle and the divergence angle affect the flow pattern and energy conversion of the water flow in the Venturi tube. The pressure monitoring module monitors the water pressure changes in the converging section, the throat section, and the diverging section in real time, providing data for the computer control system. The flow rate monitoring and control module can not only monitor the incoming water flow rate in real time, but also control the incoming water flow rate through the valve according to requirements. By adjusting and controlling these parameters, a database is formed, and finally, the precise control of the hydrodynamic cavitation effect during the bubble generation process can be achieved, generating micro-nano bubbles with different particle size distributions and concentrations. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 It is a schematic structural diagram of the intelligent adjustable micro-nano bubble generating device of the present invention;

[0034] Figure 2 It is a schematic cross-sectional structure diagram of the second sealing plate and the fourth sealing plate in the present invention;

[0035] Figure 3 It is a schematic plan structure diagram of the second sealing plate and the fourth sealing plate in the present invention;

[0036] Figure 4 It is a schematic structure diagram of the third sealing plate and the fifth sealing plate in the present invention;

[0037] Figure 5 It is a front cross-sectional view of the micro-nano bubble generating device composed of three groups of intelligent adjustable Venturi tubes connected in parallel;

[0038] Figure 6 It is a left view of the micro-nano bubble generating device composed of three groups of intelligent adjustable Venturi tubes connected in parallel;

[0039] Figure 7 It is a schematic structure diagram of the micro-nano bubble generating device composed of three groups of intelligent adjustable Venturi tubes connected in parallel.

[0040] Among them, 1. Venturi tube main body; 2. Converging section; 3. Throat section; 4. Diverging section; 5. Bracket; 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. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0043] Referring to Figures 1-6 , the present invention provides an intelligent adjustable micro-nano bubble generating device, including:

[0044] The Venturi tube main body 1 is symmetrically and hermetically arranged between two flat plates with the center line of the water flow pipeline as the axis of symmetry. Inside the Venturi tube main body 1, there are successively a converging section 2, a throat section 3, and a diverging section 4 along the water inlet direction. The throat section 3 is connected with an inlet pipe 13;

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

[0046] The converging angle control mechanism is arranged between the first sealing plate 8 and the converging section 2 and is used to adjust the angle value of the converging angle;

[0047] The diverging angle control mechanism is arranged between the first sealing plate 8 and the diverging section 4 and is used to adjust the angle value of the diverging angle;

[0048] The flow rate monitoring and control module is arranged inside the converging section 2 and is used to monitor the water flow rate passing through. A valve is installed at the water inlet end of the Venturi tube main body to control the water inlet flow rate;

[0049] The pressure monitoring module is arranged inside the converging section 2, the throat section 3, and the diverging section 4 and is used to monitor the change in water flow pressure before and after passing through the Venturi tube;

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

[0051] Before starting the foaming process, it is necessary to conduct a comprehensive inspection of the intelligent adjustable micro-nano bubble generating device to ensure that all components are tightly connected and undamaged, and the Venturi tube body 1, the throat diameter control mechanism, the convergence angle control mechanism, the divergence angle control mechanism, etc. are all in normal working conditions. After confirming that there is no error, turn on the power supply of the device, start the entire system, the controller starts to operate, and each monitoring module enters the standby state. According to the actual application requirements, through the human-machine interface connected to the controller, input the desired micro-nano bubble generation parameters, including the target water flow rate, the target water flow pressure, the ideal throat diameter, the convergence angle, and the divergence angle, etc. These parameters will serve as the basis for the operation and adjustment of the device. After receiving the set throat diameter parameter, the controller sends an instruction to the throat diameter control mechanism. The diameter control component starts to work, driving the first motor to control the two symmetrically arranged first sealing plates 8 to move within the throat section 3. During the movement of the first sealing plates 8, the effective flow area of the throat section 3 is gradually changed, thereby achieving precise adjustment of the throat diameter until the set throat diameter value is reached. Simultaneously or after the adjustment of the throat diameter, the controller sends a control signal to the convergence angle control mechanism according to the set convergence angle. The convergence angle control mechanism starts to operate, and by adjusting the relative position relationship between the second sealing plate 9 and the third sealing plate 10, the shape of the convergence section 2 is changed, and then the angle value of the convergence angle is adjusted to meet the set requirements. Similarly, the controller sends an instruction to the divergence angle control mechanism according to the set divergence angle. The divergence angle control mechanism adjusts the structure between the fourth sealing plate 11 and the fifth sealing plate 12 through corresponding actions, changes the shape of the divergence section 4, and adjusts the angle value of the divergence angle to the set value.

[0052] After the device starts running, the flow monitoring and control module installed in the converging section 2 monitors the passing water flow 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, and adjusts the water intake to the set value through the valve at the water inlet end. At the same time, the pressure monitoring modules installed in the converging section 2, the throat section 3, and the diverging section 4 continuously monitor the passing 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 monitored 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 an adjustment signal to the relevant control mechanism. For example, if the actual water flow pressure is lower than the target water flow pressure, the controller may adjust the diverging angle control mechanism to change the diverging angle, so as to affect the pressure change of the water flow in the diverging section 4 and make the actual water flow pressure approach the target water flow pressure. When parameters such as water flow, water flow pressure, throat diameter, converging angle, and diverging angle are all stable near the set values, the device enters the stable hydrodynamic cavitation foaming stage. At this time, water enters the converging section 2 from the water inlet of the venturi tube body 1, and the water flow velocity gradually increases and the pressure decreases in the converging section 2. When the water flow enters the throat section 3, due to the smaller diameter of the throat section 3, the water flow velocity is the fastest and the pressure is the lowest. Under the action of negative pressure, air is inhaled into the throat section 3 through the air inlet pipe 13 and is fully mixed with the high-speed flowing water. Subsequently, the water flow mixed with air enters the diverging section 4, where the water flow 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-nano bubbles, and is discharged from the water outlet of the venturi tube body 1 with the water flow, completing the entire foaming process. When the foaming work is completed, a stop command is sent to the controller through the human-machine interface. The controller sequentially sends stop signals to each control mechanism, and the throat diameter control mechanism, the converging angle control mechanism, and the diverging angle control mechanism stop operating. At the same time, the water inlet valve is closed to stop supplying water to the device. After the water flow in the device is emptied, the power supply of the device is cut off to complete the entire foaming process.

[0053] For a further optimized solution, the diameter control assembly includes:

[0054] A bracket 5, which is fixed on the fixed back plate outside the first sealing plate 8;

[0055] A threaded rod 6, which is vertically slidably connected to the bracket 5. A 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 diameter of the throat tube needs to be adjusted, an instruction is sent to the driving mechanism (such as the first motor) connected to the nut 7 through an external control system (such as a controller). 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 in the vertical direction. One end of the threaded rod 6 is fixedly connected to the first sealing plate 8. Therefore, the movement of the threaded rod 6 will drive the first sealing plate 8 to slide horizontally within the throat tube section 3, thereby changing the effective flow area of the throat tube section 3 and achieving the adjustment of the throat tube diameter.

[0057] Different throat tube diameters will affect the speed and pressure of the water flow in the throat tube section 3, and further affect the air intake and the generation effect of bubbles. By precisely adjusting the throat tube diameter, the particle size and production of bubbles can be optimized according to actual needs.

[0058] For a further optimized solution, the convergence angle control mechanism includes:

[0059] A second sealing plate 9, there are two sets of second sealing plates, which are symmetrically arranged between the top wall and the bottom wall of the convergence section. The second sealing plate is rotationally 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. Tracks are arranged on the sides of the second sealing plate 9;

[0060] A third sealing plate 10, a sliding connection is formed between the third sealing plate 10 close to the convergence section and 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 arranged outside the third sealing plate and is used to control the movement of the third sealing plate. When the convergence angle needs to be adjusted, the controller sends an instruction to the second motor, and the second motor drives the third sealing plate 10 to move horizontally. One end of the second sealing plate 9 is rotationally 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 through a track, and 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 will drive the second sealing plate 9 to rotate within 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 will affect the acceleration effect and pressure change of the water flow in the convergence section 2, and further affect the initial conditions for bubble generation. By adjusting the convergence angle, the hydrodynamic characteristics during the bubble generation process can be optimized.

[0063] For a further optimized solution, the divergence angle control mechanism includes:

[0064] The fourth sealing plate, there are two groups of the fourth sealing plates, and the two groups of fourth sealing plates are symmetrically arranged between the top wall and the bottom wall of the diffuser section. The fourth sealing plate is rotationally 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. Tracks are arranged on the sides of the fourth sealing plate;

[0065] The fifth sealing plate, a sliding connection is formed between the fifth sealing plate close to the diffuser section and 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 arranged outside the fifth sealing plate and is used to control the movement of the fifth sealing plate.

[0067] The third motor is arranged outside the fifth sealing plate and is used to control the movement of the fifth sealing plate. When the convergence angle needs to be adjusted, the controller issues an instruction to the third motor, and the third motor drives the fifth sealing plate 12 to move horizontally. One end of the fourth sealing plate 11 is rotationally 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 through a track, and the first sealing plate 8, the fourth sealing plate 11, and the fifth sealing plate 12 are arranged in a Z-shaped structure. The movement of the first sealing plate 8 will drive the fourth sealing plate 11 to rotate in the diffuser section 3. After the position of the first sealing plate 8 is fixed, the forward and backward movement of the fifth sealing plate 12 will push the fourth sealing plate 11 to rotate, thereby changing the shape of the diffuser section 3 and realizing the adjustment of the diffusion angle.

[0068] The size of the diffusion angle will affect the deceleration effect and pressure recovery of the water flow in the diffuser section 4, and further affect 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 in the diffuser section 4.

[0069] Comprehensively adjust the parameters of flow rate, pressure, convergence angle, throat diameter and diffusion angle to make the bubbles generated by the equipment meet the required particle size requirements and concentration requirements.

[0070] For a further optimized solution, the flow rate monitoring and control module includes a flow meter, and the flow meter is installed in the converging section 2.

[0071] For a further optimized solution, the pressure monitoring module includes a pressure sensor, and the pressure sensor is arranged in the converging section 2, the throat section 3, and the diffuser section 4.

[0072] For a further optimized solution, the valve adopts an electromagnetic valve.

[0073] For a further optimized solution, the third sealing plate 10 and the fifth sealing plate 12 are respectively sealed and installed in the double-layer clamping groove 14.

[0074] An electromagnetic flowmeter, model LDG-S, is selected, which has the advantages of high measurement accuracy, good stability, and is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity. The measuring range is selected according to the actual water flow range, generally 0 - 10m 3 / h, and the accuracy class is 0.5. The flowmeter is installed in the converging section 2 through flange connection.

[0075] A diffused silicon pressure sensor, model CYB-20S, is selected as the pressure sensor, which has the advantages of high measurement accuracy, fast response speed, and strong anti-interference ability. The measuring range is selected according to the actual water flow pressure range, generally 0 - 1MPa, and the accuracy class is 0.25. The pressure sensor is installed in the converging section 2, the throat section 3, and the diffusing section 4 through threaded connection.

[0076] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0077] The embodiments described above are only for describing the preferred mode of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An intelligent adjustable micro-nano bubble generating device, characterized in that, Comprising: A Venturi tube main body (1), which is symmetrically and hermetically arranged between two flat plates with the center line of the water flow pipeline as the axis. Inside the Venturi tube main body (1), there are successively a converging section (2), a throat section (3), and a diverging section (4) along the water inlet direction. An air inlet pipe (13) is connected to the throat section (3); A throat diameter control mechanism, which includes two first sealing plates (8). The two first sealing plates (8) are symmetrically arranged inside the throat section (3), and throat diameter control components are respectively arranged between the first sealing plates (8) and the inner wall of the throat section (3); A converging angle control mechanism, which is arranged between the first sealing plate (8) and the converging section (2) and is used to adjust the angle value of the converging angle; A diverging angle control mechanism, which is arranged between the first sealing plate (8) and the diverging section (4) and is used to adjust the angle value of the diverging angle; A flow rate monitoring and control module, which is arranged inside the converging section (2) and is used to monitor the water flow rate passing through. A valve is installed at the water inlet end of the Venturi tube main body to control the water inlet flow rate; A pressure monitoring module, which is arranged inside the converging section (2), the throat section (3), and the diverging section (4) and is used to monitor the change in water flow pressure before and after passing through the Venturi tube; Wherein, the valve, the throat diameter control mechanism, the converging angle control mechanism, the diverging angle control mechanism, the flow rate monitoring and control module, and the pressure monitoring module are all connected to a controller.

2. The intelligent adjustable micro-nano bubble generating device according to claim 1, characterized in that, The diameter control component includes: A bracket (5), which is fixed on the fixed back plate outside the first sealing plate (8); A threaded rod (6), which 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). By rotating the nut (7), the threaded rod (6) is driven to rotate, realizing manual control of the movement of the first sealing plate (8); A first motor is arranged above the threaded rod (6) and is used to automatically control the movement of the first sealing plate (8) to achieve precise control of the throat diameter.

3. An intelligent adjustable micro-nano bubble generating device according to claim 1, characterized in that, The converging angle control mechanism includes: A second sealing plate (9), and there are two groups of the second sealing plates (9). The two groups of 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 rotationally 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. Tracks are arranged on the side edges of the second sealing plate (9); A third sealing plate (10), and a sliding connection is formed between the third sealing plate (10) close to the converging section (2) and 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; A second motor is arranged outside the third sealing plate (10) and is used to control the movement of the third sealing plate (10).

4. An intelligent adjustable micro-nano bubble generating device according to claim 3, characterized in that, The diffusion angle control mechanism includes: Fourth sealing plates (11), two sets of the fourth sealing plates (11) are provided, and 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 plates (11) are rotationally connected to the first sealing plates (8) to ensure that the rotation of the fourth sealing plates (11) will not cause the displacement of the first sealing plates. Tracks are arranged on the sides of the fourth sealing plates (11). Fifth sealing plates (12), a sliding connection is formed between the fifth sealing plates (12) close to the diffusion section (4) and the tracks of the fourth sealing plates (11), and the fifth sealing plates (12), the fourth sealing plates (11), and the first sealing plates (8) are arranged in a Z-shaped structure. A third motor is arranged outside the fifth sealing plates (12) for controlling the movement of the fifth sealing plates (12).

5. An intelligent adjustable micro-nano bubble generating device according to claim 1, characterized in that, The flow rate monitoring and control module includes a flow meter, and the flow meter is installed in the converging section (2).

6. An intelligent adjustable micro-nano bubble generating device according to claim 1, characterized in that, The pressure monitoring module includes pressure sensors, and the pressure sensors are arranged in the converging section (2), the throat section (3), and the diffusion section (4).

7. An intelligent adjustable micro-nano bubble generating device according to claim 1, characterized in that, The valve adopts a solenoid valve for controlling the water inlet flow rate.

8. An intelligent adjustable micro-nano bubble generating device according to claim 4, characterized in that, Tracks are respectively machined on the inner sides of the second sealing plates (9) and the fourth sealing plates (11), and the second sealing plates (9) and the fourth sealing plates (11) slide in the converging section (2) and the diffusion section (4) respectively through the tracks.

9. An intelligent adjustable micro-nano bubble generating device according to claim 4, characterized in that, The third sealing plates (10) and the fifth sealing plates (12) are respectively sealed and installed in the double-layer clamping grooves (14).

Images