A method and device for preparing a water-based long-lasting anti-rust coating

Abstract

The present invention relates to the technical field of coating preparation, and in particular to a preparation method and device for a water-based long-term anti-rust coating, comprising: preparing a water-based resin solution, the water-based resin solution comprising one or more of a water-based epoxy resin, a water-based acrylic resin and a water-based polyurethane resin; adding an anti-rust pigment into the water-based resin solution, the anti-rust pigment comprising one or more of zinc phosphate, aluminum tripolyphosphate, molybdate and ferro-titanium black; adding a dispersant and a wetting agent, mixing them uniformly to form an anti-rust slurry; adding the anti-rust slurry, a film-forming aid, a defoaming agent, a leveling agent and a preservative into a preparation device, mixing them uniformly to form a water-based anti-rust coating; filtering the water-based anti-rust coating to remove impurities to obtain a final water-based long-term anti-rust coating, thereby improving adhesion and thus improving anti-rust performance.

Description

Technical Field

[0001] The present invention relates to the technical field of coating preparation, and in particular to a method and device for preparing a water-based long-lasting anti-rust coating. Background Art

[0002] Anti-rust paint is a specialized coating material designed to protect metal surfaces from corrosion. It forms a dense protective film on the metal surface, effectively isolating it from moisture, oxygen, and other harmful substances in the air that can cause rust, thereby achieving its rust-proofing effect. Anti-rust paint typically consists of a film-forming substance (such as epoxy resin, acrylic resin, or polyurethane resin), an anti-rust pigment (such as zinc phosphate, aluminum tripolyphosphate, etc.), a solvent, and various additives.

[0003] The existing anti-rust coating has poor adhesion during use, which greatly affects the anti-rust effect during use. Summary of the Invention

[0004] The object of the present invention is to provide a method and device for preparing a water-based long-term anti-rust coating, aiming to improve the adhesion ability and thus improve the anti-rust performance.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a method for preparing a water-based long-term anti-rust coating, comprising preparing a water-based resin solution, wherein the water-based resin solution comprises one or more of a water-based epoxy resin, a water-based acrylic resin, and a water-based polyurethane resin;

[0006] adding an anti-rust pigment into the aqueous resin solution, wherein the anti-rust pigment comprises one or more of zinc phosphate, aluminum tripolyphosphate, molybdate and iron titanium black;

[0007] Add dispersant and wetting agent, mix well to form anti-rust slurry;

[0008] Add the anti-rust slurry, film-forming aid, defoamer, leveling agent and preservative into the preparation device, mix them, and stir them evenly to form a water-based anti-rust coating;

[0009] The water-based anti-rust coating is filtered to remove impurities to obtain the final water-based long-term anti-rust coating.

[0010] In the second aspect, the present invention also provides a preparation device for water-based long-lasting anti-rust coating, including a base, a support frame, a stirring shell, a cover plate, a stirring assembly, a slurry circulation assembly and a bubble monitoring assembly. The support frame is fixedly connected to the base and is located on one side of the support frame. The stirring shell is fixed on the support frame, the cover plate is slidably set on the stirring shell, the stirring assembly is set on the cover plate, and the slurry circulation assembly is set on one side of the stirring assembly to drive the slurry in the stirring shell to circulate up and down. The bubble monitoring assembly is used to take pictures to detect bubbles when the slurry circulates and control the rotation speed of the stirring assembly.

[0011] In which, the cover plate includes a cover plate body, a control cylinder, a sealing ring, an observation window and a baffle, the cover plate body is slidably arranged on the top of the stirring shell, the output end of the control cylinder is connected to the cover plate body, the sealing ring is arranged between the cover plate body and the stirring shell, the observation window is arranged at the bottom of the cover plate body, and the baffle is slidably arranged on one side of the observation window.

[0012] The stirring assembly includes a stirring motor, a stirring rod and a stirring blade. The stirring rod is rotatably arranged on the cover body and is located in the stirring shell. The output end of the stirring motor is connected to the stirring rod, and the stirring blade is fixed on the stirring rod.

[0013] Among them, the circulation component includes a support frame, a lifting unit, a screw and a friction ring. The support frame is slidably arranged on the cover body, the stirring rod passes through the support frame, the output end of the lifting unit is connected to the support frame, the screw is rotatably arranged on the support frame, the stirring rod passes through the screw, the friction ring is fixed to the bottom of the screw, and a friction plate is provided on the stirring rod corresponding to the friction ring.

[0014] Wherein, the circulation component further includes a return spring, and the return spring is arranged between the lifting unit and the support frame.

[0015] The support frame includes a frame body, a support plate and an extension rod. The support plate is connected to the output end of the lifting unit, the extension rod is connected to the support plate, and the frame body is fixed on the extension rod.

[0016] Among them, the bubble monitoring component includes a photographing unit, an image processing unit, a bubble detection unit, a distribution unit and a drive control unit. The photographing unit is arranged on one side of the observation window and is used to obtain a slurry image; the image processing unit is used to preprocess the slurry image; the bubble detection unit is used to use a convolutional neural network model to identify and classify the slurry image to obtain a bubble classification result; the drive control unit is used to control the speed of the stirring motor based on the bubble classification result.

[0017] The present invention provides a method and device for preparing a water-based long-lasting anti-rust coating, and prepares one or more types of water-based resins as base materials. These water-based resins may include but are not limited to water-based epoxy resins, water-based acrylic resins, and water-based polyurethane resins. Selecting the appropriate resin type and its ratio is crucial to ensuring the performance of the final product. These resins not only provide good adhesion, but also enhance the weather resistance and mechanical strength of the coating. After the water-based resin solution is prepared, the next step is to add anti-rust pigments thereto. These anti-rust pigments can be zinc phosphate, aluminum tripolyphosphate, molybdate, or iron titanium black, etc., which can effectively inhibit the corrosion reaction on the metal surface and improve the anti-rust effect of the coating. According to the specific application requirements and environmental conditions, one or more anti-rust pigments can be selected for use in combination.

[0018] To ensure a good dispersion of the anti-rust pigment in the resin solution, appropriate amounts of dispersants and wetting agents are required. Dispersants help prevent pigment particles from agglomerating, while wetting agents improve the pigment's ability to wet the substrate, making the entire system more stable and also improving the quality of the coating. This process requires proper stirring to ensure thorough mixing. After the above components are evenly mixed, auxiliary materials such as film-forming agents, defoamers, leveling agents, and preservatives are added and further stirred in a dedicated preparation unit. Film-forming agents help form a continuous and dense coating; defoamers reduce bubbles generated during stirring; leveling agents help eliminate surface defects in the coating, resulting in a smoother and more even finish; and preservatives extend the shelf life of the coating and prevent product deterioration caused by microbial growth.

[0019] The final step is filtering the mixed water-based anti-rust coating to remove any undissolved particles or other impurities, ensuring the coating's purity and workability. This coating can be widely used to protect the surfaces of various metal products, particularly those exposed to harsh environments, such as bridges, ships, and pipelines, to extend their service life and maintain their aesthetic appearance. The water-based, long-lasting anti-rust coating meticulously formulated through these steps is not only environmentally friendly and pollution-free, but also exhibits exceptional rust prevention capabilities and excellent physical and chemical properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1The present invention is a flow chart of a method for preparing a water-based long-lasting anti-rust coating.

[0022] Figure 2 It is a structural diagram of a preparation device of a water-based long-lasting anti-rust coating of the present invention.

[0023] Figure 3 It is the right structural diagram of a preparation device of a water-based long-term anti-rust coating of the present invention.

[0024] Figure 4 It is a left structural diagram of a preparation device of a water-based long-lasting anti-rust coating of the present invention.

[0025] Figure 5 It is a cross-sectional structural diagram of a preparation device of a water-based long-term anti-rust coating of the present invention.

[0026] Figure 6 yes Figure 5 A partial enlargement of detail A.

[0027] Figure 7 It is a structural diagram of the bubble monitoring component of the present invention.

[0028] Base 101, support frame 102, stirring shell 103, cover 104, stirring assembly 105, slurry circulation assembly 106, bubble monitoring assembly 107, cover body 108, control cylinder 109, sealing ring 110, observation window 111, baffle 112, stirring motor 113, stirring rod 114, stirring blade 115, support frame 116, lifting unit 117, screw 118, friction ring 119, return spring 120, frame 121, support plate 122, extension rod 123, camera unit 124, image processing unit 125, bubble detection unit 126, distribution unit 127, drive control unit 128, baffle body 129, gear 130, first rack 131, second rack 132, friction plate 133. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "length," "width," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, in the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0031] First embodiment

[0032] See also Figure 1 The present invention provides a method for preparing a water-based long-lasting anti-rust coating, comprising:

[0033] S101 prepares an aqueous resin solution, wherein the aqueous resin solution includes one or more of an aqueous epoxy resin, an aqueous acrylic resin, and an aqueous polyurethane resin;

[0034] Waterborne resin solutions can be made from a single waterborne epoxy resin, waterborne acrylic resin, or waterborne polyurethane resin, or they can be mixed in a certain ratio to achieve better performance. For example, waterborne epoxy resins are typically formed by chemically modifying epoxy resins with waterborne curing agents (such as amine curing agents); waterborne acrylic resins are produced through emulsion polymerization of acrylate monomers in water; and waterborne polyurethane resins are prepared by reacting isocyanates with polyols in an aqueous medium.

[0035] S102 adding an anti-rust pigment to the aqueous resin solution, wherein the anti-rust pigment comprises one or more of zinc phosphate, aluminum tripolyphosphate, molybdate, and iron titanium black;

[0036] Next, an anti-rust pigment is added to the aqueous resin solution. Commonly used anti-rust pigments include zinc phosphate, aluminum tripolyphosphate, molybdate, and titanium black. These pigments chemically react with the metal surface to form a protective film, preventing oxygen and moisture from directly contacting the metal surface and achieving the desired rust prevention effect. For example, zinc phosphate (Zn3(PO4)2·4H2O) is a common anti-rust pigment that reacts with iron ions on the metal surface to form an insoluble phosphate layer, providing excellent rust prevention.

[0037] S103 Add dispersant and wetting agent, mix well, and form anti-rust slurry;

[0038] To ensure good dispersion of the anti-rust pigment in the resin solution and maintain the coating's rheological properties, appropriate amounts of dispersants and wetting agents are required. Dispersants help prevent pigment particle agglomeration, ensuring coating stability and application performance; wetting agents enhance the coating's ability to wet the substrate and promote coating formation. Common dispersants include polycarboxylates and polyurethanes, while wetting agents include siloxanes and fatty acid esters.

[0039] S104: adding the anti-rust slurry, film-forming aid, defoaming agent, leveling agent and preservative into the preparation device, mixing and stirring evenly to form a water-based anti-rust coating;

[0040] The rust-proof slurry is mixed with additives such as film-forming agents, defoamers, leveling agents, and preservatives, and stirred thoroughly until a uniform water-based rust-proof coating is formed. Film-forming agents, such as ethylene glycol butyl ether and propylene glycol methyl ether acetate, help improve the coating's drying speed and hardness. Defoamers, such as silicone oils and polyether-modified silicone oils, are used to eliminate bubbles generated during the coating's stirring process. Leveling agents, such as acrylic leveling agents, help the coating form a smooth surface after application. Preservatives, such as isothiazolinone preservatives, are used to prevent microbial growth during storage.

[0041] S105 filters the water-based anti-rust coating to remove impurities, thereby obtaining a final water-based long-lasting anti-rust coating.

[0042] The final step is to filter the prepared water-based anti-rust paint through a filter to remove any large particles of impurities that may be present and ensure the quality of the paint. This step is crucial to ensuring the final application effect of the paint. Filters of different pore sizes can be used to select the appropriate filtration accuracy based on the specific requirements of the paint.

[0043] Through the above steps, a water-based long-lasting anti-rust coating with excellent performance, environmental protection and safety can be obtained, which is suitable for anti-rust treatment of various metal surfaces.

[0044] Second embodiment

[0045] See also Figures 2 to 7The present invention also provides a device for preparing a water-based long-lasting anti-rust coating, comprising a base 101, a support frame 102, a stirring shell 103, a cover plate 104, a stirring assembly 105, a slurry circulation assembly 106 and a bubble monitoring assembly 107. The support frame 102 is fixedly connected to the base 101 and is located on one side of the support frame 102. The stirring shell 103 is fixed on the support frame 102. The cover plate 104 is slidably arranged on the stirring shell 103. The stirring assembly 105 is arranged on the cover plate 104. The slurry circulation assembly 106 is arranged on one side of the stirring assembly 105, and is used to drive the slurry in the stirring shell 103 to circulate up and down. The bubble monitoring assembly 107 is used to take pictures to detect bubbles when the slurry circulates and control the rotation speed of the stirring assembly 105.

[0046] In this embodiment, the base 101 is the basic part of the entire device, providing stable support for other components, and the support frame 102 is used to fix the stirring shell 103 and other related components to ensure the smooth operation of the entire system.

[0047] The support frame 102 is fixedly connected to the base 101 by welding or other means and is located on one side of the base 101. Its height and angle can be adjusted as needed to accommodate mixing shells 103 of varying sizes. The mixing shell 103 is the primary location for paint mixing, and its interior features a specific structure to promote material flow and mixing. The mixing shell 103 is typically cylindrical and made of corrosion-resistant materials, such as stainless steel, to accommodate the chemical properties of water-based paints. The inner wall of the shell may be equipped with guide plates or spiral blades to enhance mixing.

[0048] The cover plate 104 is installed on the top of the stirring shell 103 and can be slid open to facilitate feeding and cleaning.

[0049] The stirring assembly 105 is responsible for driving the stirring shaft to rotate so that the coating is evenly mixed in the stirring shell 103 .

[0050] The slurry circulation assembly 106 is used to drive the slurry in the stirring shell 103 to circulate up and down, further improving the mixing efficiency. At the same time, it can drive any bubbles in the slurry to float to the surface for detection.

[0051] The bubble monitoring assembly 107 is used to detect bubbles in the slurry in real time and automatically adjust the speed of the stirring assembly 105 based on the detection results to reduce bubble generation. The bubble monitoring assembly 107 includes a camera, an image processing unit 125, and a control system. The camera is installed inside or outside the stirring shell 103 and captures real-time images of the slurry through a transparent window. The image processing unit 125 analyzes the captured images and detects the number and size of bubbles. The control system adjusts the motor speed based on the detection results to optimize the stirring process and reduce bubble generation.

[0052] This preparation device makes it easier to adjust the stirring speed, thereby minimizing the generation of bubbles during the stirring process, thereby improving the production efficiency and quality of water-based long-lasting anti-rust coatings and meeting the high standards required for industrial applications.

[0053] The cover plate 104 includes a cover plate body 108, a control cylinder 109, a sealing ring 110, an observation window 111 and a baffle 112. The cover plate body 108 is slidably arranged on the top of the stirring shell 103, the output end of the control cylinder 109 is connected to the cover plate body 108, the sealing ring 110 is arranged between the cover plate body 108 and the stirring shell 103, the observation window 111 is arranged at the bottom of the cover plate body 108, and the baffle 112 is slidably arranged on one side of the observation window 111.

[0054] In this embodiment, the cover body 108 is the main part of the cover 104, which is used to cover the top of the mixing shell 103 to prevent material overflow and external contaminants from entering. It is usually made of high-strength, corrosion-resistant materials such as stainless steel or engineering plastics.

[0055] The control cylinder 109 is used to drive the opening and closing of the cover body 108, achieving automated operation. The control cylinder 109 is fixed to the support frame 102, and its output end is connected to the cover body 108 via a connecting rod. When the cylinder is extended or retracted, the connecting rod drives the cover body 108 along the slide, opening and closing the cover 104. The control cylinder 109 can be remotely controlled by the control system, improving operational convenience and safety.

[0056] The sealing ring 110 is installed between the cover body 108 and the mixing shell 103 to ensure the sealing inside the mixing shell 103 and prevent material leakage and external contaminants from entering. The sealing ring 110 is usually made of a high-temperature and corrosion-resistant rubber material and is installed at the lower edge of the cover body 108.

[0057] The observation window 111 is used to monitor the mixing process inside the mixing shell 103 in real time, so that the operator can understand the mixing status in time. The edge of the observation window 111 is provided with a sealing strip to ensure the sealing with the cover body 108.

[0058] The baffle 112 is used to block the observation window 111 to prevent the material from splashing onto the observation window 111 during the mixing process and affecting the line of sight. The baffle 112 is slidably arranged on one side of the observation window 111 and can be slid manually or electrically.

[0059] The stirring assembly 105 includes a stirring motor 113, a stirring rod 114 and a stirring blade 115. The stirring rod 114 is rotatably arranged on the cover body 108 and is located in the stirring shell 103. The output end of the stirring motor 113 is connected to the stirring rod 114, and the stirring blade 115 is fixed on the stirring rod 114.

[0060] The stirring motor 113 is the power source of the stirring assembly 105 and provides the driving force required for stirring. The stirring motor 113 is usually a high-efficiency, low-noise DC or AC motor and is installed above the cover body 108.

[0061] The stirring rod 114 is used to transmit the rotational motion of the stirring motor 113, driving the stirring blades 115 to stir the materials in the stirring shell 103. The stirring rod 114 is usually made of stainless steel or high-strength alloy steel to ensure its strength and rigidity under high-speed rotation.

[0062] The stirring blades 115 are mounted on the stirring rod 114 and act directly on the materials to achieve uniform mixing. The stirring blades 115 are usually made of stainless steel or corrosion-resistant plastic, and their shape and number are designed according to the characteristics of the coating and the mixing requirements.

[0063] The circulation component includes a support frame 116, a lifting unit 117, a screw 118 and a friction ring 119. The support frame 116 is slidably set on the cover body 108, the stirring rod 114 passes through the support frame 116, the output end of the lifting unit 117 is connected to the support frame 116, the screw 118 is rotatably set on the support frame 116, the stirring rod 114 passes through the screw 118, the friction ring 119 is fixed to the bottom of the screw 118, and a friction plate 133 is provided on the stirring rod 114 corresponding to the friction ring 119.

[0064] The support frame 116 is used to secure and support the stirring rod 114, ensuring that it can move up and down smoothly during the stirring process, thereby achieving the circulation of the slurry. The support frame 116 is slidably mounted on the cover body 108 and can move along the slide rails on the cover body 108. The support frame 116 mainly consists of a frame 121, a support plate 122, and an extension rod 123.

[0065] The lifting unit 117 is used to drive the support frame 116 to move up and down, thereby driving the screw 118 to move up and down along the stirring rod 114. During the downward movement of the screw 118, the friction ring 119 can contact the friction plate 133 provided on the stirring rod 114, so that the friction ring 119 can rotate together with the friction plate 133 under the action of friction force, so that the outer side of the screw 118 can drive the slurry below to lift upward under the support of the support frame 116, thereby forming an upward liquid flow, and then an up and down circulating flow can be formed in the above-mentioned stirring shell 103, making it easier to discharge and display bubbles.

[0066] The circulation assembly further includes a return spring 120 , which is disposed between the lifting unit 117 and the support frame 116 .

[0067] The return spring 120 is provided between the lifting unit 117 and the support frame 116 and is used to help the support frame 116 to quickly return to its original position when the lifting unit 117 is retracted, thereby ensuring that the stirring rod 114 can quickly return to its original position.

[0068] The support frame 116 includes a frame body 121 , a support plate 122 and an extension rod 123 . The support plate 122 is connected to the output end of the lifting unit 117 . The extension rod 123 is connected to the support plate 122 . The frame body 121 is fixed on the extension rod 123 .

[0069] The frame 121 is the main body of the support frame 116 and is usually made of high-strength, corrosion-resistant materials such as stainless steel or aluminum alloy. The support plate 122 is connected to the output end of the lifting unit 117, and the driving force of the lifting unit 117 is transmitted to the support frame 116 through the support plate 122. The support plate 122 is usually made of the same material as the frame 121 to ensure its strength and corrosion resistance. The extension rod 123 is connected to the support plate 122 and is used to fix the frame 121. The design of the extension rod 123 should ensure its stability and flexibility when the support frame 116 moves. At the same time, the slurry can be easily discharged from the gap of the extension rod 123 to form a circulating flow.

[0070] The bubble monitoring component 107 includes a photographing unit 124, an image processing unit 125, a bubble detection unit 126, a distribution unit 127 and a drive control unit 128. The photographing unit 124 is arranged on one side of the observation window 111 and is used to obtain a slurry image; the image processing unit 125 is used to pre-process the slurry image; the bubble detection unit 126 is used to identify and classify the slurry image using a convolutional neural network model to obtain a bubble classification result; the drive control unit 128 is used to control the speed of the stirring motor 113 based on the bubble classification result.

[0071] The camera unit 124 typically includes a high-resolution camera and a light source. The camera is mounted on one side of the observation window 111 and captures images of the slurry within the mixing shell 103 through the transparent observation window 111. The light source is used to illuminate the interior of the mixing shell 103 to ensure that the captured image is clear and visible. The camera and light source can be fixed to the cover body 108 via a bracket to ensure their stability and accuracy. The camera typically uses an industrial-grade high-resolution camera, such as a 1080p or higher resolution CMOS camera. The light source can be an LED lamp to provide uniform lighting.

[0072] Image processing unit 125 is used to preprocess the slurry images captured by camera unit 124 to facilitate subsequent bubble detection. Image processing unit 125 typically includes an image acquisition card, image processing software, and a computer. The image acquisition card transmits image data captured by the camera to the computer, and the image processing software performs image preprocessing, such as noise reduction and contrast enhancement.

[0073] The bubble detection unit 126 is used to identify and classify the pre-processed slurry image using a convolutional neural network (CNN) model to obtain a bubble classification result. The bubble detection unit 126 mainly includes a convolutional neural network model and computing resources. The convolutional neural network model is usually trained using a large number of annotated slurry images during the training phase to identify and classify bubbles. The computing resources can be high-performance GPUs or dedicated AI accelerators to ensure fast inference of the model. The convolutional neural network model can adopt a classic CNN architecture such as ResNet, VGG or Inception. The training data set should contain slurry images under various conditions to improve the generalization ability of the model.

[0074] The distribution unit 127 is used to transmit the classification results of the bubble detection unit 126 to the drive control unit 128, ensuring accurate information transmission. The distribution unit 127 generally includes a communication module and a data interface. The communication module can use wired or wireless communication methods such as Ethernet, Wi-Fi, or RS-485. The data interface is used to connect the bubble detection unit 126 and the drive control unit 128 to ensure reliable data transmission.

[0075] The drive control unit 128 is used to control the rotational speed of the stirring motor 113 based on the bubble classification result to reduce the generation of bubbles. The drive control unit 128 generally includes a controller, a driver and a motor. The controller receives the classification result of the bubble detection unit 126, adjusts the output of the driver according to a preset control strategy, and then controls the rotational speed of the stirring motor 113. The controller can adopt a PLC (programmable logic controller) or an embedded system. The controller should have high-performance computing power and real-time control capabilities to ensure precise control of the stirring motor 113. The driver should support multiple motor types, such as DC motors, stepper motors or servo motors, to meet different stirring requirements.

[0076] The baffle 112 includes a baffle body 129, a gear 130 and a first rack 131. The baffle body 129 is slidably arranged on one side of the observation window 111. The first rack 131 is fixed on the baffle body 129. The gear 130 is engaged with the first rack 131. A second rack 132 is arranged on the extension rod 123, and the second rack 132 is engaged with the gear 130.

[0077] Baffle body 129 is used to shield observation window 111, preventing material from splashing onto observation window 111 during mixing and obstructing the operator's line of sight. Baffle body 129 is typically made of the same or similar material as cover body 108, such as stainless steel or engineering plastic, to ensure corrosion resistance and strength. Baffle body 129 is designed in a rectangular or elongated shape, with a width slightly smaller than the width of observation window 111 and a height sufficient to completely shield observation window 111. A slide groove or rail is provided on one side of baffle body 129, allowing it to slide along one side of observation window 111.

[0078] Gear 130 converts the sliding motion of baffle body 129 into rotational motion, enabling precise control of baffle 112. Gear 130 is typically made of high-strength, wear-resistant materials such as stainless steel or carbide. Gear 130 is mounted on one side of baffle body 129 and meshes with first rack 131. The diameter and module of gear 130 should be selected based on actual needs to ensure smooth and non-stuttering sliding.

[0079] Specifically, during the downward movement of the extension rod 123, the second rack 132 can drive the gear 130 to rotate, so that the gear 130 can drive the first rack 131 and the baffle body 129 to automatically open, thereby automatically opening the observation window 111 after the screw 118 moves into place, making observation more convenient.

[0080] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of the rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A preparation device for a water-based long-lasting anti-rust coating, characterized in that: The stirring mechanism is configured to move the stirring cylinder upward and downward to move the stirring cylinder upward, and the stirring cylinder is configured to move the stirring cylinder upward and downward to move the stirring cylinder upward. The stirring cylinder is configured to move the stirring cylinder downward and downward to move the stirring cylinder upward. The stirring cylinder is configured to move the stirring cylinder upward and downward to move the stirring cylinder upward. The stirring cylinder is configured to move the stirring cylinder upward and downward to move the stirring cylinder downward. The stirring cylinder is configured to move the stirring cylinder upward and downward to move the stirring cylinder downward. The output end is connected to the stirring rod, and the stirring blade is fixed to the stirring rod; the circulation component includes a support frame, a lifting unit, a screw and a friction ring, the support frame is slidably arranged on the cover body, the stirring rod passes through the support frame, the output end of the lifting unit is connected to the support frame, the screw is rotatably arranged on the support frame, the stirring rod passes through the screw, the friction ring is fixed to the bottom of the screw, and a friction plate is provided on the stirring rod corresponding to the friction ring; the circulation component also includes a return spring, which is provided between the lifting unit and the support frame; the support frame includes a frame body, a support plate and an extension rod, the support plate is connected to the output end of the lifting unit, the extension rod is connected to the support plate, and the frame body is fixed to the extension rod; the baffle includes a baffle body, a gear and a first rack, the baffle body is slidably arranged on one side of the observation window, the first rack is fixed on the baffle body, the gear is meshed with the first rack, a second rack is provided on the extension rod, and the second rack is meshed with the gear.

2. The preparation device of a water-based long-term anti-rust coating according to claim 1, characterized in that: The bubble monitoring component includes a photographing unit, an image processing unit, a bubble detection unit, a distribution unit and a drive control unit. The photographing unit is arranged on one side of the observation window and is used to obtain a slurry image; the image processing unit is used to preprocess the slurry image; the bubble detection unit is used to identify and classify the slurry image using a convolutional neural network model to obtain a bubble classification result; and the drive control unit is used to control the speed of the stirring motor based on the bubble classification result.

3. A method for preparing a water-based long-term anti-rust coating, using the preparation device of a water-based long-term anti-rust coating according to claim 2, It is characterized by: The method comprises: preparing an aqueous resin solution, wherein the aqueous resin solution comprises one or more of an aqueous epoxy resin, an aqueous acrylic resin and an aqueous polyurethane resin; Adding an anti-rust pigment into the aqueous resin solution, wherein the anti-rust pigment comprises one or more of zinc phosphate, aluminum tripolyphosphate, molybdate and iron titanium black; Add dispersant and wetting agent, mix well to form anti-rust slurry; Add the anti-rust slurry, film-forming aid, defoamer, leveling agent and preservative into the preparation device, mix them, and stir them evenly to form a water-based anti-rust coating; The water-based anti-rust coating is filtered to remove impurities to obtain the final water-based long-term anti-rust coating.

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