Varnish Raw Material Agglomerate Particle and Microbubble Detection Device and Its Detection Method

Abstract

The present invention relates to a detection device and a detection method for agglomerated particulate matter and microbubbles in varnish raw materials. Among them, the detection device includes a processing table, a detection station arranged on the processing table. There is a transparent plate at the detection station, and a detection sample is placed at the detection station. The surface of the detection sample is sprayed with a varnish sample raw material, and the detection sample is placed on the surface of the transparent plate; an image acquisition component is arranged above the transparent plate, and a light irradiation component and an image recognition and analysis system connected to the image acquisition component are arranged below the transparent plate; the image recognition and analysis system of the device can collect and analyze the image inside the varnish sample raw material layer (varnish film) on the surface of the detection sample by means of light and an industrial camera, and can identify the agglomerated particulate matter and bubbles in the image at the same time, without the problem of misjudging bubbles as agglomerated particulate matter, providing relatively accurate data support for the addition of wetting dispersants and defoamers.

Description

Technical Field

[0001] The present invention relates to the field of quality debugging and detection of varnish raw materials, and in particular to a device and a detection method for detecting agglomerated particles and microbubbles in varnish raw materials. Background Art

[0002] The production process of varnish coatings is mainly a physical mixing process. Its main raw materials include resins (film-forming substances) and solvents. In addition, appropriate additives need to be added during the mixing process. The additives include emulsifiers, wetting and dispersing agents, defoamers, and solid coating additives (such as cellulose), etc. During the physical stirring and mixing process of varnish raw materials, the wetting and dispersing agent mainly plays the role of stably dispersing solid particles, preventing the tiny particles of solid coatings from aggregating together to form agglomerated particles. Under normal circumstances, if the tiny particles of solid coatings are evenly dispersed in the solvent, they can be quickly dissolved in the solvent, and the varnish coating is qualified. If the tiny particles aggregate together to form agglomerated particles, there will be a problem that the particles cannot be completely dissolved in the solvent, and it is necessary to further add a wetting and dispersing agent until the agglomerated particles are broken down into uniform tiny particles;

[0003] In addition, during the physical stirring process of varnish raw materials, air will be involved to form bubbles, and even bubbles will be generated during the construction process of the coating. The use of defoamers effectively solves the problem of bubbles. During the debugging process of varnish coatings, the wetting and dispersing agent and the defoamer are generally fed into the raw material tank in a step-by-step manner. The main reason is that if the wetting and dispersing agent and the defoamer are added in excess, it will also affect the quality of the varnish coating. Therefore, during the step-by-step addition of the wetting and dispersing agent and the defoamer, it is necessary to conduct sample detection on the mixed varnish coating, mainly to detect the number of agglomerated particles (which can also be called insoluble particles) and bubbles in the sample. According to the distribution quantity of the agglomerated particles (which can also be called insoluble particles) and bubbles, the addition amounts of the wetting and dispersing agent and the defoamer are further determined until the number of agglomerated particles (which can also be called insoluble particles) and bubbles in the detected sample meets the requirements. The final addition amounts of the wetting and dispersing agent and the defoamer are the corresponding formula contents of this kind of varnish coating.

[0004] A Chinese patent with the publication number CN103558158B discloses a method for detecting the content of particulate insolubles in coating auxiliaries or coatings, which includes the following steps: 1. Add an appropriate amount of colorant to the aqueous solution of solid coating auxiliaries, liquid coating auxiliaries or coatings, and mix and stir evenly to obtain a sample; 2. Uniformly coat the sample on a test panel to form a wet film, and the color of the test panel is different from that of the colorant; 3. Judge according to the number of colored particles per unit area of the wet film. The more the number of colored particles per unit area, the higher the content of particulate insolubles in the coating auxiliaries or coatings. On the contrary, the fewer the number of colored particles per unit area, the lower the content of particulate insolubles in the coating auxiliaries or coatings.

[0005] Through understanding the related technologies, there are some drawbacks in the actual operation of the method for detecting the content of particulate insolubles in coating auxiliaries or coatings disclosed in the above patent: After the colorant dyes the coating, although it can color the particulate insolubles in the coating, when there are tiny bubbles inside the wet film during visual observation of the wet film, protrusions will also form on the surface of the wet film. When recording the number of colored particles inside the wet film, it is easy to mistake the bubbles for colored particles. At this time, when adding a wetting and dispersing agent, there will be a problem of misjudgment of the dosage addition, and even a problem of excessive addition of the wetting and dispersing agent, while the bubbles in the coating are not well eliminated. Summary of the Invention

[0006] In order to improve the problem that the detection of agglomerated particulate matter in the clear varnish coating sample is not in place, the present application provides a device and a detection method for detecting agglomerated particulate matter and microbubbles in clear varnish raw materials.

[0007] In a first aspect, a device for detecting agglomerated particulate matter and microbubbles in clear varnish raw materials provided by the present application adopts the following technical solution:

[0008] The device for detecting agglomerated particulate matter and microbubbles in clear varnish raw materials includes a processing table, a detection station provided on the processing table, a transparent plate at the detection station, a detection sample piece placed at the detection station, the surface of the detection sample piece is sprayed with clear varnish sample raw materials, and the detection sample piece is placed on the surface of the transparent plate;

[0009] Above the transparent plate, there is an image acquisition component, and below the transparent plate, there is a light irradiation component and an image recognition and analysis system connected to the image acquisition component;

[0010] The image acquisition component includes a bracket fixed on the processing table, a horizontal guide plate installed on the bracket, a horizontal guide groove provided at the bottom of the horizontal guide plate, a guide block engaged in the horizontal guide groove, a lead screw sleeve installed on the guide block, a lead screw passing through the middle of the lead screw sleeve, a servo motor connected to the lead screw on one side of the bracket, and an industrial camera installed on the lead screw sleeve, and the industrial camera is located above the detection station;

[0011] The lighting component includes a circuit board disposed in the processing table and a plurality of lamp beads disposed on the circuit board, and the lamp beads are located below the transparent plate;

[0012] The image recognition and analysis system includes:

[0013] An image acquisition module for collecting images of the test samples captured by the industrial camera;

[0014] A first recognition module for recognizing agglomerated particulate matter in the image;

[0015] A first counting module for counting the number of agglomerated particulate matter recognized by the first recognition module in a single image;

[0016] A second recognition module for recognizing bubbles in the image;

[0017] A second counting module for counting the number of bubbles recognized by the second recognition module in a single image;

[0018] An image display module for displaying the images of the test samples captured by the industrial camera.

[0019] Furthermore, the device further includes a raw material tank. One side of the bottom of the raw material tank is provided with a varnish raw material spraying device. A stirring mechanism is provided in the raw material tank. A raw material inlet and an additive inlet are provided at the top of the raw material tank. A wetting and dispersing agent pipe and an antifoaming agent supply pipe are connected to the additive inlet. A first solenoid valve is provided on the wetting and dispersing agent pipe, and a second solenoid valve is provided on the antifoaming agent supply pipe.

[0020] Through the above technical scheme, when the device performs detection processing, resin and solvent are manually or mechanically added into the raw material tank through the raw material input port, the supply amount of resin and solvent is recorded in real time, the wetting dispersant tube adds an appropriate amount of wetting dispersant into the raw material tank, and at the same time, the defoaming agent supply pipe adds an appropriate amount of defoaming agent into the raw material tank, and the stirring mechanism fully stirs the raw materials in the raw material tank to form a varnish coating. When the quality of the varnish coating needs to be tested, the varnish raw material spraying device sprays the varnish sample raw material on the test sample, and the sprayed test sample is placed on the surface of the transparent plate. Before testing, the position of the industrial camera and the position of the lamp beads need to be debugged. When the position of the industrial camera is debugged, the servo motor After the machine is started, it drives the screw to rotate. Under the premise that the horizontal guide plate limits the screw sleeve circumferentially, the screw sleeve outside the screw moves horizontally. After the screw sleeve drives the industrial camera to move to the position directly above the test sample, the servo motor stops rotating. After the industrial camera is located directly above the test sample, it is convenient to shoot the image of the test sample. When the height of the lamp bead is adjusted, the push rod motor drives the lamp bead on the circuit board to approach or move away from the test sample. The industrial camera shoots the image of the test sample. The shot image is displayed through the image display module (preferably a display screen). The image is manually analyzed by naked eyes. When the edge images of the agglomerated particles and micro bubbles in the image are clear, the height position of the lamp bead is manually stopped;

[0021] When the edge images of the agglomerated particles and micro-bubbles in the image are not clear, the height position of the lamp beads is manually adjusted until the edge images of the agglomerated particles and micro-bubbles in the image taken by the industrial camera are clear;

[0022] After the position debugging of the lamp beads is completed, and after manually detecting that the position of the test sample (the sample raw material with varnish sprayed on the surface) on the transparent plate is accurate, the industrial camera takes a picture of the image of the test sample, and the image acquisition module collects the captured high-definition image. Since under the soft light of the lamp beads, the overall image of the test sample will be relatively transparent, the image taken by the industrial camera can reflect the internal situation of the varnish sample raw material layer (varnish film) on the surface of the test sample. After the image acquisition module collects the captured high-definition image, the first recognition module recognizes the agglomerated particulate matter in the image, and the second recognition module recognizes the bubbles in the image. At the same time, the first counting module counts the number of agglomerated particulate matter recognized by the first recognition module, and the second counting module counts the number of bubbles recognized by the second recognition module. It should be noted that under the illumination of the light, the agglomerated particulate matter appears as a solid irregular shadow in the image, and under the illumination of the light, the bubble appears as a circular shape with a hollow interior and a shadow trace on the edge in the image. Therefore, there is a significant difference in the images presented by the agglomerated particulate matter and the bubbles in the image. When the first recognition module recognizes the image of the agglomerated particulate matter, it mainly confirms two parameters. The first parameter is whether the image is a solid image, and the second parameter is whether the edge trace of the image is regular. If the image appears as a solid and irregular shadow, the first recognition module can recognize the image as agglomerated particulate matter;

[0023] Similarly, when the second recognition module recognizes the image of the bubble, it mainly confirms two parameters. The first parameter is whether the image is a hollow image, and the second parameter is whether the edge trace of the image is a regular circle. If the image appears as a circular shape with a hollow interior and a shadow trace on the edge, the second recognition module can recognize the image as a bubble.

[0024] The advantage of this device design is that with the help of the light and the industrial camera, the image recognition and analysis system can collect and analyze the high-definition image inside the varnish sample raw material layer (varnish film) on the surface of the test sample, and at the same time can identify the agglomerated particulate matter and bubbles in the image, and there will be no problem of misjudging bubbles as agglomerated particulate matter. The device changes the input amounts of the wetting dispersant and the defoamer according to the numbers of agglomerated particulate matter and bubbles in the image.

[0025] Furthermore, the image recognition and analysis system further includes:

[0026] The first execution control module is used to control the opening and closing of the first solenoid valve;

[0027] The second execution control module is used to control the opening and closing of the second solenoid valve;

[0028] The central control module sets the numerical values of the allowable agglomerated particulate matters and air bubbles in the varnish sample raw material on the test sample. When the number of agglomerated particulate matters exceeds the set value, the central control module sends a first instruction to the first execution control module. When the number of air bubbles exceeds the set value, the central control module sends a second instruction to the second execution control module.

[0029] By adopting the above technical solution, after the first counting module counts the number of agglomerated particulate matters identified by the first identification module, if the number of agglomerated particulate matters is higher than the numerical value of the agglomerated particulate matters set by the central control module, the central control module sends a first instruction to the first execution control module. The first execution control module controls the first electromagnetic valve to open. After the wetting and dispersing agent pipe supplies a dosage unit of the wetting and dispersing agent into the raw material tank, the first execution control module controls the first electromagnetic valve to close. Among them, the supply amount of a dosage unit can be set by controlling the opening time of the first electromagnetic valve by the central control module. Generally, after the first instruction is issued, the opening time of the first electromagnetic valve is 2 - 3 seconds. The supply amount of a dosage unit of the wetting and dispersing agent can be recorded in real time. After a dosage unit of the wetting and dispersing agent is supplied, the stirring mechanism fully stirs the raw materials in the raw material tank. The added wetting and dispersing agent can disperse the agglomerated particulate matters in the raw material tank of the coating. The dispersed fine particulate matters can be dissolved in the solvent. After the mixing work at this stage is completed, the varnish raw material spraying device sprays the varnish sample raw material on a new test sample again. The sprayed test sample is placed on the surface of the transparent plate and photographed by the industrial camera. After the new test sample is photographed, the image recognition and analysis system collects and analyzes the new image. If the number of agglomerated particulate matters in the new image is still higher than the numerical value of the agglomerated particulate matters set by the central control module, the central control module can control the first electromagnetic valve to open again, and the wetting and dispersing agent pipe supplies a dosage unit of the wetting and dispersing agent into the raw material tank again until the number of agglomerated particulate matters in the image of the latest test sample meets the requirements set by the central control module. The total amount of the wetting and dispersing agent added in multiple dosage units later and the wetting and dispersing agent input in the raw material tank in the early stage is the total supply amount of the wetting and dispersing agent after the successful debugging of the coating this time.

[0030] Similarly, after the second counting module counts the number of bubbles identified by the second identification module, if the number of bubbles is higher than the bubble quantity value set by the central control module, the central control module sends a second instruction to the second execution control module. After the second execution control module controls the second solenoid valve to open and the defoamer supply pipe supplies one dosage unit of defoamer into the raw material tank, the second execution control module controls the second solenoid valve to close. Among them, the supply quantity of one dosage unit can be set by the central control module controlling the opening time of the second solenoid valve. Generally, after the second instruction is issued, the opening time of the second solenoid valve is 2 - 3 seconds. The supply quantity of one dosage unit of defoamer can be recorded in real time. After one dosage unit of defoamer is supplied, the stirring mechanism fully stirs the raw materials in the raw material tank. The added defoamer can eliminate the bubbles in the coating of the raw material tank. After the mixing work in this stage is completed, the varnish raw material spraying device sprays the varnish sample raw material on a new test sample again. The sprayed test sample is placed on the surface of the transparent plate and photographed by the industrial camera. After the new test sample is photographed, the image recognition and analysis system collects and analyzes the new image. If the number of bubbles in the new image is still higher than the bubble quantity value set by the central control module, the central control module can control the second solenoid valve to open again, and the defoamer supply pipe supplies one dosage unit of defoamer into the raw material tank again until the number of bubbles in the image of the latest test sample meets the requirements set by the central control module. The total amount of the defoamer added in multiple dosage units later and the defoamer put into the raw material tank in the early stage is the total supply quantity of the defoamer after the successful debugging of the coating this time.

[0031] Further, the varnish raw material spraying device includes a base, a first robotic arm installed on the base, a second robotic arm hinged to the first robotic arm, a third robotic arm hinged to the second robotic arm, a fourth robotic arm hinged to the third robotic arm, and a spraying gun installed at the end of the fourth robotic arm. The spraying gun is connected to the discharge valve at the bottom of the raw material tank through a hose;

[0032] Angle adjustment motors are installed at the joints of the first robotic arm and the second robotic arm, the second robotic arm and the third robotic arm, and the third robotic arm and the fourth robotic arm.

[0033] By adopting the above technical solution, the varnish raw material spraying device is composed of multiple robotic arms. The varnish raw material spraying device has multiple rotating pairs. The spraying gun is communicated with the inner cavity of the raw material tank through a hose and a discharge valve. After multiple rotating pairs are started and the position and angle of the end of the spraying gun are adjusted, the spraying gun sprays the varnish sample raw material in the raw material tank on the surface of the test sample.

[0034] Further, a conveyor belt is provided between the varnish raw material spraying device and the processing table. A test sample is provided on the conveyor belt. The spraying gun sprays the varnish sample raw material onto the surface of the test sample, and the varnish sample raw material forms a varnish film on the surface of the test sample. The materials of the test sample and the transparent plate are both glass sheets. Among them, the thickness of the test sample is 100 - 200 μm, and the thickness of the transparent plate is 150 - 250 μm, which can ensure good light transmittance.

[0035] By adopting the above technical solution, multiple clean test samples can be placed on the conveyor belt. When the test sample is needed, the spraying gun sprays the varnish sample raw material in the raw material tank onto the surface of the test sample to form a varnish film. After spraying, the conveyor belt transports the sprayed test sample to the processing table for image taking.

[0036] Further, the light irradiation component further includes a guide frame installed in the processing table. A support plate is provided inside the guide frame. Sliders are provided on both sides of the circuit board. Longitudinal guide grooves are provided on the guide frame. The sliders are slidably engaged with the longitudinal guide grooves. A push rod motor is provided on the support plate. The output shaft of the push rod motor is connected to the back of the circuit board. A radiator is installed at the bottom of the support plate. A button for controlling the operation of the push rod motor is provided on the processing table.

[0037] By adopting the above technical solution, after the staff presses the button, the push rod motor can control the lifting of the circuit board, thereby facilitating the control of the distance between the lamp beads and the test sample. When the circuit board is lifted or lowered, the longitudinal guide grooves guide the lifting of the sliders on both sides of the circuit board, thereby ensuring the stability of the circuit board during lifting and lowering. In addition, the radiator at the bottom of the support plate can dissipate heat from the inside of the processing table to prevent the heat inside the processing table from being too high.

[0038] Further, the shapes of the detection station and the test sample are the same, and the diameter of the detection station is larger than the diameter of the test sample, which facilitates the smooth placement of the test sample at the detection station.

[0039] Further, when the test sample is square, the lamp beads are arranged in a rectangular array on the circuit board. When the test sample is circular, the lamp beads are arranged in a circular array on the circuit board. The cross-sectional area of the light irradiation area formed by multiple lamp beads is larger than the cross-sectional area of the detection station.

[0040] By adopting the above technical solution, the lamp beads are evenly arranged on the circuit board. The uniform light generated by the lamp beads passes through the transparent plate and irradiates the test sample, ensuring that the test sample can receive the light irradiation evenly. After the arrangement shape of the lamp beads on the circuit board is the same as the shape of the test sample, the light reception uniformity of the test sample can be improved better.

[0041] Further, the stirring mechanism includes a stirring shaft installed in the raw material tank, paddle blades installed on the stirring shaft, and a driving motor provided at the top of the raw material tank and connected to the stirring shaft.

[0042] By adopting the above technical solution, when the stirring mechanism works, the driving motor starts, drives the paddle to rotate in the raw material tank through the stirring shaft, so as to play the role of raw material stirring.

[0043] Second, the present application provides a detection method for agglomerated particulate matter and microbubbles in varnish raw materials, adopting the following technical solution:

[0044] The detection method for agglomerated particulate matter and microbubbles in varnish raw materials includes the following steps:

[0045] S1. Spray the varnish sample raw material on the surface of the test sample through the varnish raw material spraying device;

[0046] S2. The varnish sample raw material on the surface of the test sample forms a varnish film. The test sample is transported to the detection station of the processing table and placed on the surface of the transparent plate;

[0047] S3. Debug the position of the industrial camera: After the servo motor starts, it drives the lead screw to rotate, and the lead screw sleeve outside the lead screw moves horizontally. The lead screw sleeve drives the industrial camera to move to the position directly above the test sample;

[0048] S4. Debug the light irradiation intensity: After the push rod motor starts, the push rod motor drives the lamp beads on the circuit board to approach or move away from the test sample. The industrial camera takes an image of the test sample, and the taken image is displayed through the image display module. Manual visual analysis is performed on the image;

[0049] When the edge images of the agglomerated particulate matter and microbubbles in the image are clear, manually stop adjusting the height position of the lamp beads;

[0050] When the edge images of the agglomerated particulate matter and microbubbles in the image are not clear, manually continue to adjust the height position of the lamp beads until the edge images of the agglomerated particulate matter and microbubbles in the image taken by the industrial camera are clear;

[0051] S5. After the light debugging is completed, the image recognition and analysis system analyzes and detects the number of agglomerated particulate matter and bubbles in the image taken by the industrial camera, and correspondingly controls the supply amounts of the wetting dispersant and the defoaming agent.

[0052] The beneficial effects of the present invention are as follows: 1. With the help of the light and the industrial camera, the image recognition and analysis system of the device can collect and analyze the image inside the varnish sample raw material layer (varnish film) on the surface of the test sample, and can identify the agglomerated particulate matter and bubbles in the image at the same time. There will be no problem of misjudging bubbles as agglomerated particulate matter, providing relatively accurate data support for the addition of the wetting dispersant and the defoaming agent;

[0053] 2. The image recognition and analysis system can quickly recognize and record the number of agglomerated particulate matters and bubbles in the image. After the number of agglomerated particulate matters and bubbles exceeds the set value, the system automatically adjusts the input amounts of the wetting dispersant and defoaming agent in the raw material tank until the debugging work of the varnish coating is completed. This system can gradually complete multiple debugging and multiple quality inspection works of the varnish coating, providing an accurate data basis for the debugging and detection of the varnish coating. Brief Description of the Drawings

[0054] Figure 1 It is a schematic structural diagram of the present invention;

[0055] Figure 2 It is a schematic structural diagram of the processing table and the image acquisition component of the present invention;

[0056] Figure 3 It is a schematic structural diagram of the varnish raw material spraying device of the present invention;

[0057] Figure 4 It is a schematic principle diagram of the image recognition and analysis system of the present invention;

[0058] Figure 5 It is an image of the varnish sample raw material layer (varnish film) on the surface of the test sample of the present invention after being photographed;

[0059] Figure 6 It is a first layout schematic diagram of the lamp beads on the circuit board;

[0060] Figure 7 It is a second layout schematic diagram of the lamp beads on the circuit board.

[0061] Description of the Reference Numerals: 1, processing table; 11, detection station; 12, transparent plate; 2, test sample;

[0062] 3, image acquisition component; 31, bracket; 32, horizontal guide plate; 33, horizontal guide groove; 34, guide block; 35, lead screw sleeve; 36, lead screw; 37, servo motor; 38, industrial camera;

[0063] 4, light irradiation component; 41, circuit board; 42, lamp beads; 43, guide frame; 44, support plate; 45, slider; 46, longitudinal guide groove; 47, push rod motor; 48, radiator; 49, button;

[0064] 5, image recognition and analysis system; 50, image acquisition module; 51, first recognition module; 52, first counting module; 53, second recognition module; 54, second counting module; 55, image display module; 56, first execution control module; 57, second execution control module; 58, central control module;

[0065] 6. Raw material tank; 61. Raw material inlet; 62. Auxiliary agent inlet; 63. Wetting and dispersing agent pipe; 64. Defoaming agent supply pipe; 65. First solenoid valve; 66. Second solenoid valve; 67. Stirring shaft; 68. Blade; 69. Driving motor; 610. Discharge valve;

[0066] 7. Varnish raw material spraying device; 70. Base; 71. First robotic arm; 72. Second robotic arm; 73. Third robotic arm; 74. Fourth robotic arm; 75. Spraying gun; 76. Hose; 77. Angle adjustment motor; 8. Conveyor belt; 100. Agglomerated particles; 200. Bubbles. Detailed implementation manners

[0067] As Figures 1 to 3 shown, the detection device for agglomerated particles and micro-bubbles of varnish raw materials includes a processing table 1, a detection station 11 arranged on the processing table 1. A transparent plate 12 is provided at the detection station 11. A detection sample piece 2 is placed at the detection station 11. The surface of the detection sample piece 2 is sprayed with varnish sample raw materials. The detection sample piece 2 is placed on the surface of the transparent plate 12. The materials of the detection sample piece 2 and the transparent plate 12 are both glass sheets. Among them, the thickness of the detection sample piece 2 is 100-200 μm, and the thickness of the transparent plate 12 is 150-250 μm, which can ensure good light transmittance.

[0068] Above the transparent plate 12, there is an image acquisition component 3. Below the transparent plate 12, there is a light irradiation component 4 and an image recognition and analysis system 5 connected to the image acquisition component 3;

[0069] Among them, the image acquisition component 3 includes a bracket 31 fixed on the processing table 1, a horizontal guide plate 32 installed on the bracket 31. A horizontal guide groove 33 is provided at the bottom of the horizontal guide plate 32. A guide block 34 is engaged in the horizontal guide groove 33. A lead screw sleeve 35 is installed on the guide block 34. A lead screw 36 passes through the middle of the lead screw sleeve 35. A servo motor 37 connected to the lead screw 36 is provided on one side of the bracket 31. An industrial camera 38 is installed on the lead screw sleeve 35. The industrial camera 38 is located above the detection station 11;

[0070] Industrial cameras are mainly cameras based on CCD (Charge Coupled Device) and CMOS (Complementary Metal Oxide Semiconductor) chips. The main idea of a CCD industrial camera is that the image forms an image on the CCD image-sensitive surface after passing through the optical system. The image-sensitive surface converts the image illumination incident on it into the density signal of photo-generated minority carriers that is proportional to the light intensity and illumination time, and stores it in the image-sensitive units. Then, it is transferred to the shift register of the CCD. Finally, with the help of driving pulses, the signals in the memory are shifted out, thus forming electrical signals of different intensities. The photodetectors of CMOS photosensitive elements are mainly photodiodes, which can independently select and process each light-emitting diode, and corresponding operations can be achieved through the selection circuit device. Moreover, each pixel has a relatively independent amplifier. CMOS image sensors have advantages such as low power consumption and low price, but the image quality captured by them is not high. Compared with CMOS, CCD image sensors have characteristics such as high resolution and clear imaging.

[0071] Further, the light irradiation assembly 4 includes a circuit board 41 disposed in the processing table 1 and a plurality of lamp beads 42 disposed on the circuit board 41. The lamp beads 42 are located below the transparent plate 12.

[0072] Further, the light irradiation assembly 4 further includes a guide frame 43 installed in the processing table 1. A support plate 44 is provided inside the guide frame 43. Sliders 45 are provided on both sides of the circuit board 41. Longitudinal guide grooves 46 are provided on the guide frame 43. The sliders 45 are slidably engaged with the longitudinal guide grooves 46. A push rod motor 47 is provided on the support plate 44. The output shaft of the push rod motor 47 is connected to the back of the circuit board 41. A radiator 48 is installed at the bottom of the support plate 44. A button 49 for controlling the operation of the push rod motor 47 is provided on the processing table 1.

[0073] After the staff presses the button 49, the push rod motor 47 can control the lifting of the circuit board 41, so as to conveniently control the distance between the lamp beads 42 and the test sample 2. When the circuit board 41 is lifted or lowered, the longitudinal guide grooves 46 guide the lifting of the sliders 45 on both sides of the circuit board 41, thus ensuring the stability of the lifting of the circuit board 41. In addition, the radiator 48 at the bottom of the support plate 44 can dissipate heat from the inside of the processing table 1 to prevent the heat inside the processing table 1 from being too high.

[0074] Further, the shapes of the detection station 11 and the test sample 2 are the same, and the diameter of the detection station 11 is larger than the diameter of the test sample 2, which facilitates the smooth placement of the test sample 2 at the detection station 11.

[0075] As Figure 6 shown, when the test sample 2 is square, the lamp beads 42 are arranged in a rectangular array on the circuit board 41, as Figure 7As shown, when the test sample 2 is circular, the lamp beads 42 are arranged in a circular array on the circuit board 41. The cross-sectional area of the lighting area formed by the multiple lamp beads 42 is larger than the cross-sectional area of the detection station 11, so as to ensure that the interior of the detection station 11 is filled with soft illumination light. The lamp beads 42 are evenly arranged on the circuit board 41. The lamp beads 42 can be fluorescent lamps, incandescent lamps, neon lamps, or LED lamps. The uniform light generated by the lamp beads 42 passes through the transparent plate 12 and then irradiates the test sample 2, ensuring that the test sample 2 can receive uniform light irradiation. After the arrangement shape of the lamp beads 42 on the circuit board 41 is the same as the shape of the test sample 2, the light reception uniformity of the test sample 2 can be better improved.

[0076] As Figure 4 shown, the image recognition and analysis system 5 includes:

[0077] An image acquisition module 50, which collects the images of the test sample 2 captured by the industrial camera 38;

[0078] A first recognition module 51, which recognizes the agglomerated particulate matter in the image;

[0079] A first counting module 52, which counts the number of agglomerated particulate matter recognized by the first recognition module 51 in a single image;

[0080] A second recognition module 53, which recognizes the bubbles in the image;

[0081] A second counting module 54, which counts the number of bubbles recognized by the second recognition module 53 in a single image;

[0082] An image display module 55, which displays the images of the test sample captured by the industrial camera 38.

[0083] Furthermore, the device further includes a raw material tank 6. On one side of the bottom of the raw material tank 6, there is a varnish raw material spraying device 7. Inside the raw material tank 6, there is a stirring mechanism. At the top of the raw material tank 6, there are a raw material inlet 61 and an additive inlet 62. A wetting and dispersing agent pipe 63 and an antifoaming agent supply pipe 64 are connected to the additive inlet 62. A first solenoid valve 65 is provided on the wetting and dispersing agent pipe 63, and a second solenoid valve 66 is provided on the antifoaming agent supply pipe 64. It should be noted that other additive supply pipes can also be installed at the additive inlet 62. Since other additive supply pipes are not relevant to the technical solution discussed in this patent, they are not drawn.

[0084] Furthermore, the stirring mechanism includes a stirring shaft 67 installed inside the raw material tank 6, blades 68 installed on the stirring shaft 67, and a driving motor 69 provided at the top of the raw material tank 6 and connected to the stirring shaft 67. When the stirring mechanism works, the driving motor 69 starts, and drives the blades 68 to rotate inside the raw material tank 6 through the stirring shaft 67, thereby playing a role in stirring the raw materials.

[0085] Furthermore, the varnish raw material spraying device 7 includes a base 70, a first robotic arm 71 installed on the base 70, a second robotic arm 72 hinged to the first robotic arm 71, a third robotic arm 73 hinged to the second robotic arm 72, a fourth robotic arm 74 hinged to the third robotic arm 73, a spraying gun 75 installed at the end of the fourth robotic arm 74, and the spraying gun 75 is connected to the discharge valve 610 at the bottom of the raw material tank 6 through a hose 76;

[0086] Angle adjustment motors 77 are installed at the joints between the first robotic arm 71 and the second robotic arm 72, between the second robotic arm 72 and the third robotic arm 73, and between the third robotic arm 73 and the fourth robotic arm 74.

[0087] The varnish raw material spraying device 7 is composed of multiple robotic arms. The varnish raw material spraying device 7 has multiple rotating pairs. The spraying gun 75 is communicated with the inner cavity of the raw material tank 6 through the hose 76 and the discharge valve 610. After multiple rotating pairs are started and the position and angle of the end of the spraying gun 75 are adjusted, the spraying gun 75 sprays the varnish sample raw material in the raw material tank 6 onto the surface of the test piece 2.

[0088] In addition, a conveyor belt 8 is provided between the varnish raw material spraying device 7 and the processing table 1. The test piece 2 is provided on the conveyor belt 8. The spraying gun 75 sprays the varnish sample raw material onto the surface of the test piece 2, and the varnish sample raw material forms a varnish film on the surface of the test piece 2.

[0089] During actual operation, multiple clean test pieces 2 can be placed on the conveyor belt 8. When the test piece 2 is needed, the spraying gun 75 sprays the varnish sample raw material in the raw material tank 6 onto the surface of the test piece 2 to form a varnish film. After spraying is completed, the conveyor belt 8 transports the sprayed test piece 2 to the processing table 1 for image shooting.

[0090] When the device conducts detection and processing, resin and solvent are put into the raw material tank 6 by manual or mechanical means through the raw material inlet 61. The supply amounts of the resin and solvent are recorded in real time. The wetting dispersant pipe 63 puts an appropriate amount of wetting dispersant into the raw material tank 6. At the same time, the defoaming agent supply pipe 64 puts an appropriate amount of defoaming agent into the raw material tank 6. The stirring mechanism fully stirs the raw materials in the raw material tank 6 to form varnish paint. When it is necessary to detect the quality of the varnish paint, the varnish raw material spraying device 7 sprays the varnish sample raw material on the test piece 2. The sprayed test piece 2 is placed on the surface of the transparent plate 12. Before detection, it is necessary to debug the positions of the industrial camera 38 and the lamp beads 42. When debugging the position of the industrial camera 38, after the servo motor 37 is started, it drives the lead screw 36 to rotate. On the premise that the horizontal guide plate 32 circumferentially limits the lead screw sleeve 35, the lead screw sleeve 35 outside the lead screw 36 moves horizontally. The lead screw sleeve 35 drives the industrial camera 38 to move to the position directly above the test piece 2, and then the servo motor 37 stops rotating. After the industrial camera 38 is located at the position directly above the test piece 2, it is convenient to take pictures of the image of the test piece 2. When debugging the height of the lamp beads 42, the push rod motor 47 drives the lamp beads 42 on the circuit board 41 to approach or move away from the test piece 2. The industrial camera 48 takes pictures of the image of the test piece 2. The taken image is displayed through the image display module 55 (preferably a display screen). An operator visually analyzes the image. When the edge images of the agglomerated particles and microbubbles in the image are clear, the operator stops adjusting the height position of the lamp beads 42.

[0091] When the edge images of the agglomerated particles and microbubbles in the image are not clear, the operator continues to adjust the height position of the lamp beads 42 until the edge images of the agglomerated particles and microbubbles in the image taken by the industrial camera 38 are clear;

[0092] After the position debugging of the lamp beads 42 is completed, and after the operator detects that the position of the test piece 2 (with the varnish sample raw material sprayed on the surface) on the transparent plate 12 is accurate, the industrial camera 38 takes pictures of the image of the test piece 2. The image acquisition module 50 collects the taken high-definition image. Since under the illumination of the soft light of the lamp beads 42, the overall image of the test piece 2 will be relatively transparent, the image taken by the industrial camera 38 can reflect the situation inside the varnish sample raw material layer (varnish film) on the surface of the test piece 2. After the image acquisition module 50 collects the taken high-definition image, the first recognition module 51 recognizes the agglomerated particles in the image, and the second recognition module 53 recognizes the bubbles in the image. At the same time, the first counting module 52 counts the number of agglomerated particles recognized by the first recognition module 51, and the second counting module 54 counts the number of bubbles recognized by the second recognition module 53.

[0093] It should be noted that, such as Figure 5As shown, under the illumination of the light, the agglomerated particulate matter 100 appears as a solid irregular shadow in the image. Under the illumination of the light, the bubble 200 appears as a circular shape with a hollow interior and shadow traces at the edge in the image. Therefore, there are significant differences in the images presented by the agglomerated particulate matter 100 and the bubble 200. When the first recognition module 51 recognizes the image of the agglomerated particulate matter 100, it mainly confirms two parameters. The first parameter is whether the image is a solid image, and the second parameter is whether the edge trace of the image is regular. If the image appears as a solid and irregular shadow, the first recognition module 51 can recognize the image as the agglomerated particulate matter;

[0094] Similarly, when the second recognition module 53 recognizes the image of the bubble 200, it mainly confirms two parameters. The first parameter is whether the image is a hollow image, and the second parameter is whether the edge trace of the image is a regular circle. If the image appears as a circular shape with a hollow interior and shadow traces at the edge, the second recognition module 53 can recognize the image as the bubble.

[0095] The advantage of this device design is that with the help of the light and the industrial camera, the image recognition and analysis system 5 can collect and analyze the high-definition image inside the varnish sample raw material layer (varnish film) on the surface of the test sample 2, and at the same time can identify the agglomerated particulate matter and bubbles in the image, without the problem of misjudging bubbles as agglomerated particulate matter. The device changes the input amounts of the wetting dispersant and the defoaming agent according to the numbers of the agglomerated particulate matter and bubbles in the image.

[0096] Furthermore, the image recognition and analysis system 5 further includes:

[0097] The first execution control module 56, used to control the opening and closing of the first solenoid valve 65;

[0098] The second execution control module 57, used to control the opening and closing of the second solenoid valve 66;

[0099] The central control module 58 sets the numerical values of the allowable numbers of the agglomerated particulate matter and bubbles in the varnish sample raw material on the test sample 2. When the number of the agglomerated particulate matter exceeds the set value, the central control module 58 sends a first instruction to the first execution control module 56. When the number of the bubbles exceeds the set value, the central control module 58 sends a second instruction to the second execution control module 57.

[0100] After the first counting module 52 counts the number of agglomerated particulate matters identified by the first identification module 51, if the number of agglomerated particulate matters is higher than the value of the number of agglomerated particulate matters set by the central control module 58, the central control module 58 sends a first instruction to the first execution control module 56. The first execution control module 56 controls the opening of the first solenoid valve 65. After the wetting dispersant pipe 63 supplies a dose unit of wetting dispersant to the raw material tank 6, the first execution control module 56 controls the closing of the first solenoid valve 65. Among them, the supply amount of a dose unit can be set by the central control module 58 controlling the opening time of the first solenoid valve 65. Generally, after the first instruction is issued, the opening time of the first solenoid valve 65 is 2-3 seconds. The supply amount of a dose unit of wetting dispersant can be recorded in real time. After a dose unit of wetting dispersant is supplied, the stirring mechanism fully stirs the raw materials in the raw material tank 6. The added wetting dispersant can disperse the agglomerated particulate matters in the raw material tank coating. The dispersed fine particulate matters can be dissolved in the solvent. After the mixing work at this stage is completed, the varnish raw material spraying device 7 sprays the varnish sample raw material on a new test piece 2 again. The sprayed test piece 2 is placed on the surface of the transparent plate 12 and photographed by the industrial camera 38. After the new test piece is photographed, the image recognition and analysis system 5 collects and analyzes the new image. If the number of agglomerated particulate matters in the new image is still higher than the value of the number of agglomerated particulate matters set by the central control module 58, the central control module 58 can control the first solenoid valve 65 to open again, and the wetting dispersant pipe 63 supplies a dose unit of wetting dispersant to the raw material tank 6 again until the number of agglomerated particulate matters in the image of the latest test piece 2 meets the requirements set by the central control module 56. The total amount of the wetting dispersant added in multiple dose units later and the wetting dispersant put into the raw material tank in the early stage is the total supply amount of the wetting dispersant after the successful debugging of this coating.

[0101] Similarly, after the second counting module 54 counts the number of bubbles identified by the second identification module 53, if the number of bubbles is higher than the bubble quantity value set by the central control module 58, the central control module 58 sends a second instruction to the second execution control module 57. The second execution control module 57 controls the opening of the second solenoid valve 66. After the antifoaming agent supply pipe 64 supplies one dosage unit of antifoaming agent to the raw material tank 6, the second execution control module 57 controls the closing of the second solenoid valve 66. Among them, the supply amount of one dosage unit can be set by controlling the opening time of the second solenoid valve 66 by the central control module 58. Generally, after the second instruction is issued, the opening time of the second solenoid valve 66 is 2-3 seconds. The supply amount of one dosage unit of antifoaming agent can be recorded in real time. After the supply of one dosage unit of antifoaming agent, the stirring mechanism fully stirs the raw materials in the raw material tank 6. The added antifoaming agent can eliminate the bubbles in the raw material tank coating. After the mixing work at this stage is completed, the varnish raw material spraying device 7 sprays the varnish sample raw material on a new test piece 2 again. The sprayed test piece 2 is placed on the surface of the transparent plate 12 and photographed by the industrial camera 38. After the new test piece 2 is photographed, the image recognition and analysis system 5 collects and analyzes the new image. If the number of bubbles in the new image is still higher than the bubble quantity value set by the central control module 58, the central control module 58 can control the second solenoid valve 66 to open again, and the antifoaming agent supply pipe 64 supplies one dosage unit of antifoaming agent to the raw material tank 6 again until the number of bubbles in the image of the latest test piece meets the requirements set by the central control module 58. The total amount of the antifoaming agent added in multiple dosage units in the later stage and the antifoaming agent put into the raw material tank in the early stage is the total supply amount of the antifoaming agent after the successful debugging of the coating this time.

[0102] In summary, the detection method of the agglomerated particulate matter and micro-bubble detection device for varnish raw materials mainly includes the following steps:

[0103] S1. Spraying the varnish sample raw material on the surface of the test piece 2 through the varnish raw material spraying device 7;

[0104] S2. The varnish sample raw material on the surface of the test piece 2 forms a varnish film. The test piece is transported to the detection station 11 of the processing table 1, and the test piece 2 is placed on the surface of the transparent plate 12;

[0105] S3. Debugging the position of the industrial camera 38: After the servo motor 37 is started, it drives the lead screw 36 to rotate. The lead screw sleeve 35 outside the lead screw 36 moves horizontally, and the lead screw sleeve 35 drives the industrial camera 38 to move to the position directly above the test piece 2;

[0106] S4. Debugging of the light irradiation intensity: After the push rod motor 47 is started, the push rod motor 47 drives the lamp beads 42 on the circuit board 41 to approach or move away from the test sample 2. The industrial camera 38 takes images of the test sample 2, and the captured images are displayed through the image display module 55. Then, manual visual analysis is performed on the images.

[0107] When the edge images of the agglomerated particulate matter and microbubbles in the image are clear, the operator stops adjusting the height position of the lamp beads.

[0108] When the edge images of the agglomerated particulate matter and microbubbles in the image are not clear, the operator continues to adjust the height position of the lamp beads until the edge images of the agglomerated particulate matter and microbubbles in the images captured by the industrial camera are clear.

[0109] After the light debugging is completed, the image recognition and analysis system 5 analyzes and detects the number of agglomerated particulate matter and bubbles in the images captured by the industrial camera 38, and correspondingly controls the supply amounts of the wetting dispersant and defoaming agent. The detailed steps of step S5 have been described in detail in the above technical solutions and will not be elaborated here.

[0110] In summary, with the help of the light and the industrial camera, the image recognition and analysis system 5 of the device can collect and analyze the images inside the varnish sample raw material layer (varnish film) on the surface of the test sample 2. At the same time, it can identify the agglomerated particulate matter and bubbles in the images, and there will be no problem of misjudging bubbles as agglomerated particulate matter, providing relatively accurate data support for the addition of the wetting dispersant and defoaming agent.

[0111] The image recognition and analysis system 5 can quickly identify and record the number of agglomerated particulate matter and bubbles in the images. When the number of agglomerated particulate matter and bubbles exceeds the set value, the system automatically adjusts the input amounts of the wetting dispersant and defoaming agent in the raw material tank 6 until the debugging work of the varnish coating is completed. This system can gradually complete the multiple debugging and multiple quality inspections of the varnish coating, providing an accurate data basis for the debugging and inspection of the varnish coating.

[0112] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Varnish raw material agglomerate particle and microbubble detection device, including a processing table (1), a detection station (11) arranged on the processing table (1), and a transparent plate (12) is provided at the detection station (11), characterized in that, A test sample (2) is placed at the test station (11), and the surface of the test sample (2) is sprayed with a raw material of a clear varnish sample. The test sample (2) is placed on the surface of the transparent plate (12). An image acquisition component (3) is provided above the transparent plate (12), a light irradiation component (4) and an image recognition and analysis system (5) connected to the image acquisition component (3) are provided below the transparent plate (12). The image acquisition component (3) includes a bracket (31) fixed on the processing table (1), a horizontal guide plate (32) installed on the bracket (31). A horizontal guide groove (33) is provided at the bottom of the horizontal guide plate (32). A guide block (34) is engaged in the horizontal guide groove (33). A lead screw sleeve (35) is installed on the guide block (34). A lead screw (36) passes through the middle of the lead screw sleeve (35). A servo motor (37) connected to the lead screw (36) is provided on one side of the bracket (31). An industrial camera (38) is installed on the lead screw sleeve (35), and the industrial camera (38) is located above the test station (11). The light irradiation component (4) includes a circuit board (41) provided in the processing table (1) and a plurality of lamp beads (42) provided on the circuit board (41). The lamp beads (42) are located below the transparent plate (12). The image recognition and analysis system (5) includes: An image acquisition module (50) for collecting images of the test sample taken by the industrial camera (38). A first recognition module (51) for recognizing agglomerated particulate matter in the image. A first counting module (52) for counting the number of agglomerated particulate matter recognized by the first recognition module in a single image. A second recognition module (53) for recognizing bubbles in the image. A second counting module (54) for counting the number of bubbles recognized by the second recognition module (53) in a single image. An image display module (55) for displaying the images of the test sample taken by the industrial camera (38).

2. The varnish raw material agglomerate particle and microbubble detection device according to claim 1, characterized in that, It further includes a raw material tank (6). One side of the bottom of the raw material tank (6) is provided with a clear varnish raw material spraying device (7). A stirring mechanism is provided in the raw material tank (6). A raw material inlet (61) and an additive inlet (62) are provided at the top of the raw material tank (6). A wetting and dispersing agent pipe (63) and an antifoaming agent supply pipe (64) are connected to the additive inlet (62). A first electromagnetic valve (65) is provided on the wetting and dispersing agent pipe (63), and a second electromagnetic valve (66) is provided on the antifoaming agent supply pipe (64).

3. The varnish raw material agglomerate particle and microbubble detection device according to claim 2, characterized in that, The image recognition and analysis system (5) further includes: A first execution control module (56) for controlling the opening and closing of the first electromagnetic valve (65). A second execution control module (57) for controlling the opening and closing of the second electromagnetic valve (66). The central control module (58) sets the numerical values of the number of agglomerated particulate matters and air bubbles allowed to exist in the varnish sample raw material on the detection sample piece (2). When the number of agglomerated particulate matters exceeds the set value, the central control module (58) sends a first instruction to the first execution control module (56). When the number of air bubbles exceeds the set value, the central control module (58) sends a second instruction to the second execution control module (57).

4. The varnish raw material agglomerated particle and microbubble detection device according to claim 2, characterized in that, The varnish raw material spraying device (7) includes a base (70), a first robotic arm (71) installed on the base (70), a second robotic arm (72) hinged to the first robotic arm (71), a third robotic arm (73) hinged to the second robotic arm (72), a fourth robotic arm (74) hinged to the third robotic arm (73), a spraying gun (75) installed at the end of the fourth robotic arm (74), and the spraying gun (75) is connected to the discharge valve (610) at the bottom of the raw material tank (6) through a hose (76). Angle adjustment motors (77) are installed at the joints of the first robotic arm (71) and the second robotic arm (72), the second robotic arm (72) and the third robotic arm (73), and the third robotic arm (73) and the fourth robotic arm (74).

5. The varnish raw material agglomerate particle and microbubble detection device according to claim 4, characterized in that, A conveyor belt (8) is provided between the varnish raw material spraying device (7) and the processing table (1). A detection sample piece (2) is provided on the conveyor belt (8). The spraying gun (75) sprays the varnish sample raw material onto the surface of the detection sample piece (2). The varnish sample raw material forms a varnish film on the surface of the detection sample piece (2). The detection sample piece (2) and the transparent plate (12) are both made of glass sheets. The thickness of the detection sample piece (2) is 100 - 200 μm, and the thickness of the transparent plate (12) is 150 - 250 μm.

6. The varnish raw material agglomerated particle and microbubble detection device according to claim 2, characterized in that, The light irradiation assembly (4) further includes a guide frame (43) installed inside the processing table (1). A support plate (44) is provided inside the guide frame (43). Sliders (45) are provided on both sides of the circuit board (41). Longitudinal guide grooves (46) are provided on the guide frame (43). The sliders (45) are slidably engaged with the longitudinal guide grooves (46). A push rod motor (47) is provided on the support plate (44). The output shaft of the push rod motor (47) is connected to the back of the circuit board (41). A radiator (48) is installed at the bottom of the support plate (44). A button (49) for controlling the operation of the push rod motor (47) is provided on the processing table (1).

7. The varnish raw material agglomerated particulate and microbubble detection device according to claim 1, characterized in that The detection station (11) and the detection sample piece (2) have the same shape, and the diameter of the detection station (11) is larger than the diameter of the detection sample piece (2).

8. The varnish raw material agglomerated particulate matter and microbubble detection device according to claim 7, characterized in that, When the detection sample piece (2) is square, the lamp beads (42) are arranged in a rectangular array on the circuit board (41). When the detection sample piece (2) is circular, the lamp beads (42) are arranged in a circular array on the circuit board (41). The cross-sectional area of the light irradiation area formed by the multiple lamp beads (42) is larger than the cross-sectional area of the detection station (11).

9. The varnish raw material agglomerated particulate and microbubble detection device according to claim 2, wherein The stirring mechanism includes a stirring shaft (67) installed in the raw material tank (6), paddle blades (68) installed on the stirring shaft (67), and a driving motor (69) arranged at the top of the raw material tank (6) and connected to the stirring shaft (67).

10. The detection method of the agglomerated particulate matter and microbubbles in the varnish raw material according to claim 6, characterized in that, It includes the following steps: S1. Spray the varnish sample raw material on the surface of the test sample (2) through the varnish raw material spraying device (7); S2. The varnish sample raw material on the surface of the test sample (2) forms a varnish film. The test sample (2) is transported to the detection station (11) of the processing table (1), and the test sample (2) is placed on the surface of the transparent plate (12); S3. Debug the position of the industrial camera (38): After the servo motor (37) is started, it drives the lead screw (36) to rotate. The lead screw sleeve (35) outside the lead screw (36) moves horizontally, and the lead screw sleeve (35) drives the industrial camera (38) to move to the position directly above the test sample (2); S4. Debug the light irradiation intensity: After the push rod motor (47) is started, the push rod motor (47) drives the lamp beads (42) on the circuit board (41) to approach or move away from the test sample (2). The industrial camera (38) takes images of the test sample (2), and the taken images are displayed through the image display module (55), and the images are visually analyzed manually; When the edge images of the agglomerated particulate matter and microbubbles in the image are clear, manually stop adjusting the height position of the lamp beads (42); When the edge images of the agglomerated particulate matter and microbubbles in the image are not clear, manually continue to adjust the height position of the lamp beads (42) until the edge images of the agglomerated particulate matter and microbubbles in the image taken by the industrial camera are clear; S5. After the light debugging is completed, the image recognition and analysis system (5) analyzes and detects the number of agglomerated particulate matter and bubbles in the image taken by the industrial camera (38), and correspondingly controls the supply amounts of the wetting dispersant and the defoaming agent.

Images