Preparation device for environment-friendly uv photocuring topcoat

Abstract

The utility model discloses a kind of preparation devices of environmental protection type UV photocuring finish paint special, the preparation device of environmental protection type UV photocuring finish paint special includes: control auxiliary module, pretreatment module, paint conditioning purification module and filling module;The output of pretreatment module is connected with the input pipeline of paint conditioning purification module, the output of paint conditioning purification module is connected with the input pipeline of filling module;Paint conditioning purification module includes paint conditioning kettle and dynamic film defoaming device, the input pipeline of paint conditioning kettle is connected to the output of pretreatment module, the output of paint conditioning kettle is connected with the input pipeline of dynamic film defoaming device;The output pipeline of dynamic film defoaming device is connected to the input of filling module;Dynamic film defoaming device includes cylindrical tank body with heating jacket and high-speed turntable.The preparation device of environmental protection type UV photocuring finish paint special of the utility model realizes material efficient defoaming by dynamic film defoaming device, and ensure that the paint film after solidification reaches mirror surface effect.

Description

Technical Field

[0001] This utility model relates to the technical field of topcoat preparation equipment, and in particular to an environmentally friendly UV-curable topcoat preparation equipment. Background Technology

[0002] Ultraviolet (UV) curing topcoats, as an environmentally friendly coating, have significant advantages such as fast curing speed, high hardness, good wear resistance, and low volatile organic compound (VOC) emissions. They have been widely used in surface coating of wood, plastics, paper, and metal products. Their performance directly determines the appearance, feel, and durability of the final coating film, which in turn largely depends on the uniformity of dispersion of each component, the purity of the system, and the environmental friendliness of the production process. Currently, the commonly used UV curing topcoat production equipment in the industry typically consists of a premixing tank, grinding equipment (such as a sand mill), and a mixing tank. The production process is roughly as follows: first, some active monomers, oligomers, pigments, and fillers are initially stirred and mixed in a premixing tank to form a slurry; then, the slurry is conveyed to a sand mill for grinding and dispersion to achieve the required fineness; finally, the ground slurry is transferred to a mixing tank, where photoinitiators, remaining additives, and other shear- or temperature-sensitive components are added and mixed to obtain the final product.

[0003] However, existing preparation equipment and processes of this type have many inherent defects, which restrict further improvement in product quality and the greening of the production process: During high-speed dispersion and grinding, a large amount of air is mixed into the material, forming microbubbles. Traditional degassing methods mainly rely on standing in the paint mixing tank or vacuuming under low-speed stirring. Because UV topcoats are usually highly viscous, the natural escape rate of bubbles in a static state is extremely slow, and bubbles in the central area of ​​the tank are difficult to remove effectively. These residual microbubbles will form fatal defects such as "pinholes" and "fish eyes" on the paint film surface after coating and curing, seriously affecting the product's appearance and protective performance, leading to a decrease in yield. Utility Model Content

[0004] Therefore, it is necessary to provide an environmentally friendly UV-curable topcoat preparation device to address the technical problem of insufficient degassing capacity in existing UV-curable topcoat preparation devices.

[0005] An environmentally friendly UV-curable topcoat preparation device is disclosed. The device includes a control auxiliary module, a pretreatment module, a paint mixing and purification module, and a filling module. The output of the control auxiliary module is connected to the pretreatment module, the paint mixing and purification module, and the filling module, respectively. The output of the pretreatment module is connected to the input of the paint mixing and purification module, and the output of the paint mixing and purification module is connected to the input of the filling module.

[0006] The paint mixing and purification module includes a paint mixing kettle and a dynamic thin-film deaerator. The input pipe of the paint mixing kettle is connected to the output of the pretreatment module, and the output of the paint mixing kettle is connected to the input pipe of the dynamic thin-film deaerator. The output pipe of the dynamic thin-film deaerator is connected to the input of the filling module.

[0007] The dynamic film degasser includes a cylindrical tank with a heating jacket and a high-speed turntable. The material input end of the tank is connected to the output end of the paint mixing kettle, and the material output end of the tank is connected to the filling module. The high-speed turntable is rotated and set at the bottom of the tank.

[0008] In one embodiment, the pretreatment module includes a premixing kettle and a disc mill, with the output end of the premixing kettle connected to the input end of the disc mill via a pipe; the output end of the disc mill is connected to the input end of the paint mixing kettle via a pipe.

[0009] In one embodiment, the premixing vessel described above uses a dual planetary stirring mechanism, a wall scraping mechanism, and a high-speed dispersing disc as the mixing mechanism.

[0010] In one embodiment, the premixing vessel described above is configured as a double-jacketed structure.

[0011] In one embodiment, the pretreatment module further includes a cooling unit disposed between the disc mill and the paint mixing tank.

[0012] In one embodiment, the pretreatment module further includes a vacuum feeding system and a first metering pump, with the output of the vacuum feeding system and the output of the first metering pump respectively connected to the input of the premixing vessel via pipelines.

[0013] In one embodiment, the paint mixing and purification module further includes a finished product storage tank, the input end of which is connected to the material output end of the dynamic thin film deaerator, and the output end of which is connected to the input end of the filling module.

[0014] In one embodiment, the high-speed turntable is provided with a stirring section, which is disposed on the top side surface of the high-speed turntable.

[0015] In one embodiment, the stirring part is configured as a strip-shaped rib with a certain height protrusion.

[0016] In one embodiment, the aforementioned tank is also provided with a vacuum port.

[0017] In one embodiment, the above-mentioned paint mixing tank uses a double planetary stirring mechanism and a wall scraping mechanism as a mixing mechanism to fully mix the materials.

[0018] In one embodiment, the paint mixing and purification module further includes a second metering pump, the output pipe of which is connected to the input of the paint mixing kettle.

[0019] In one embodiment, the filling module includes a filling pump and a fully enclosed filling head. The input end of the filling pump is connected to the output end of the finished product storage tank, and the output end of the filling pump is connected to the fully enclosed filling head. The fully enclosed filling head is used to perform the product filling process.

[0020] In one embodiment, the aforementioned control auxiliary module includes a PLC, an online viscometer, and a particle size analyzer. The online viscometer and particle size analyzer monitor the viscosity and particle size of the material in the pipeline of the preparation device for environmentally friendly UV-curable topcoat online and transmit the monitoring data to the PLC in real time. The control terminal of the PLC is electrically connected to the pretreatment module, the paint mixing and purification module, and the filling module, respectively.

[0021] The aforementioned environmentally friendly UV-curable topcoat preparation device utilizes a dynamic thin-film degasser to achieve efficient degassing of materials, ensuring a mirror-like finish and eliminating surface defects after curing. This significantly improves product yield and top-tier application performance. Furthermore, the closed-loop pipeline process—pretreatment → paint mixing → degassing—ensures that material transfer between modules is completely sealed, preventing the introduction of external impurities such as dust and moisture, thus guaranteeing product purity and consistency. This solution treats the degassing process as a continuous unit with materials entering and exiting simultaneously. The modular design allows for efficient integration of material grinding and dispersion with paint mixing and degassing, reducing non-value-added steps such as intermediate material transfer and temporary storage. This significantly shortens the production cycle for single batches, improving equipment utilization and overall production efficiency. Moreover, from pretreatment to post-treatment filling, the entire material flow is completed within pipelines and sealed containers, effectively preventing the uncontrolled emission of volatile organic compounds such as active monomers and solvents from the UV paint, creating a clean production environment that meets stringent environmental regulations. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the preparation apparatus for an environmentally friendly UV-curable topcoat in one embodiment; Figure 2 This is a partial structural schematic diagram of a preparation apparatus for an environmentally friendly UV-curable topcoat in one embodiment. Detailed Implementation

[0023] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] Please see Figures 1 to 2This utility model discloses a preparation device for an environmentally friendly UV-curable topcoat. The preparation device includes a control auxiliary module 1, a pretreatment module 2, a paint mixing and purification module 3, and a filling module 4. The output of the control auxiliary module 1 is connected to the pretreatment module 2, the paint mixing and purification module 3, and the filling module 4, respectively, thereby realizing intelligent control of the preparation device. The output of the pretreatment module 2 is connected to the input of the paint mixing and purification module 3, and the output of the paint mixing and purification module 3 is connected to the input of the filling module 4, thus forming the basic structure of the preparation device for the environmentally friendly UV-curable topcoat. The topcoat raw materials are fed, premixed, and ground and dispersed through the pretreatment module 2, then finely mixed and have microbubbles and impurities removed through the paint mixing and purification module 3, and finally filled through the filling module 4. Specifically, the paint mixing and purification module 3 includes a paint mixing tank 31 and a dynamic thin-film deaerator 32. The input pipe of the paint mixing tank 31 is connected to the output of the pretreatment module 2, and the output of the paint mixing tank 31 is connected to the input pipe of the dynamic thin-film deaerator 32. The output pipe of the dynamic thin-film deaerator 32 is connected to the input of the filling module 4. Thus, the topcoat raw materials after premixing and grinding dispersion are transported to the paint mixing tank 31 for paint mixing. During this process, photoinitiators and additives are added. After the mixture is evenly mixed, the material is pumped to the dynamic thin-film deaerator 32 for continuous and efficient deaeration. More specifically, the dynamic film debubbler 32 includes a cylindrical tank 321 with a heating jacket and a high-speed turntable 322. The material input end of the tank 321 is connected to the output end of the paint mixing kettle 31, and the material output end of the tank 321 is connected to the filling module 4. The high-speed turntable 322 is rotatably mounted at the bottom of the tank 321. Thus, when the material is pumped into the tank 321, the high-speed turntable 322 rotates and flings the material into an extremely thin liquid film, which covers the inner wall of the tank 321. Microbubbles that are difficult to escape from the inside and surface of the liquid are quickly and thoroughly removed. Based on the above setup, the environmentally friendly UV-curable topcoat preparation device in this solution achieves efficient degassing of materials through a dynamic thin-film degasser 32, ensuring a mirror-like finish and eliminating surface defects after curing. This significantly improves product yield and top-tier application performance. Furthermore, the closed-loop pipeline process of pretreatment → paint mixing → degassing ensures that material transfer between modules is completely sealed, preventing the introduction of external impurities such as dust and moisture, thus guaranteeing product purity and consistency. This solution treats the degassing process as a continuous unit with material entering and exiting simultaneously. The modular design allows for efficient integration of material grinding and dispersion with paint mixing and degassing, reducing non-value-added steps such as intermediate material transfer and temporary storage. This significantly shortens the production cycle for a single batch, improving equipment utilization and overall production efficiency. In addition, from pretreatment to post-treatment filling, the entire material flow is completed within pipelines and sealed containers, effectively preventing the uncontrolled emission of volatile organic compounds such as active monomers and solvents from the UV paint, creating a clean production environment that meets stringent environmental regulations.

[0030] Furthermore, the pretreatment module 2 includes a premixing kettle 21 and a disc mill 22. The output end of the premixing kettle 21 is connected to the input end of the disc mill 22 via a pipeline; the output end of the disc mill 22 is connected to the input end of the paint mixing kettle 31 via a pipeline. Thus, powder raw materials and liquid raw materials are fed into the premixing kettle 21 for premixing, and then conveyed to the disc mill 22 for further grinding and dispersion.

[0031] Specifically, in one embodiment, the premixing vessel 21 uses a dual planetary stirring mechanism, a wall scraping mechanism, and a high-speed dispersing disc as the mixing mechanism to achieve the premixing function of the premixing vessel 21; in another embodiment, the premixing vessel 21 is configured with a double jacket structure and uses circulating water for precise temperature control.

[0032] Furthermore, the pretreatment module 2 also includes a cooling unit 23, which is located between the disc mill 22 and the paint mixing tank 31 to cool the material conveyed from the disc mill 22 to the paint mixing tank 31, so as to quickly remove the large amount of heat generated by grinding, prevent the UV active components from prepolymerizing or deteriorating due to local high temperature, and ensure product stability.

[0033] Furthermore, the pretreatment module 2 also includes a vacuum feeding system 24 and a first metering pump 25. The output end of the vacuum feeding system 24 and the output end of the first metering pump 25 are respectively connected to the input end of the premixing kettle 21 through pipes. Thus, the vacuum feeding system 24 is used for feeding powder raw materials such as pigments and fillers, and the first metering pump 25 is used for pumping liquid raw materials.

[0034] Furthermore, the paint mixing and purification module 3 also includes a finished product storage tank 33. The input end pipe of the finished product storage tank 33 is connected to the material output end of the dynamic film deaerator 32, and the output end of the finished product storage tank 33 is connected to the input end pipe of the filling module 4. Thus, the purified and deaerated material is temporarily stored in the finished product storage tank 33.

[0035] Specifically, the high-speed turntable 322 is equipped with a stirring section 3221, which is disposed on the top surface of the high-speed turntable 322. When the high-speed turntable 322 rotates, the stirring section 3221 can rapidly stir the material inside the tank 321. Specifically, in one embodiment, the stirring section 3221 is configured as a strip-shaped rib with a certain height protrusion, which realizes the centrifugal process of the material inside the tank 321 without excessive shearing of the material.

[0036] Specifically, the tank 321 is also equipped with a vacuum port a for vacuum degassing, thereby further enhancing the degassing capability of the dynamic film degasser 32.

[0037] Specifically, the paint mixing tank 31 uses a double planetary stirring mechanism and a wall scraping mechanism as the mixing mechanism to fully mix the materials.

[0038] Furthermore, the paint mixing and purification module 3 also includes a second metering pump 34, the output end of which is connected to the input end of the paint mixing kettle 31 for quantitative addition of photoinitiator and additives.

[0039] Furthermore, the filling module 4 includes a filling pump 41 and a fully enclosed filling head 42. The input end of the filling pump 41 is connected to the output end of the finished product storage tank 33, and the output end of the filling pump 41 is connected to the fully enclosed filling head 42. The fully enclosed filling head 42 is used to carry out the product filling process.

[0040] Furthermore, the control auxiliary module 1 includes a PLC 11, an online viscometer 12, and a particle size analyzer 13. The online viscometer 12 and the particle size analyzer 13 monitor the viscosity and particle size of the material in the pipeline of the preparation device for environmentally friendly UV-curable topcoat online and transmit the monitoring data to the PLC 11 in real time. The control terminal of the PLC 11 is electrically connected to the pretreatment module 2, the paint mixing and purification module 3, and the filling module 4, respectively, so as to realize the automatic control of the preparation device.

[0041] In summary, the environmentally friendly UV-curable topcoat preparation device disclosed in this utility model achieves efficient degassing of materials through a dynamic thin-film degasser, ensuring a mirror-like finish and eliminating surface defects after curing. This significantly improves product yield and top-tier application performance. Furthermore, the closed-loop pipeline process of pretreatment → paint mixing → degassing ensures that material transfer between modules is completely sealed, preventing the introduction of external impurities such as dust and moisture, thus ensuring product purity and consistency. This solution treats the degassing process as a continuous unit with material entering and exiting simultaneously. The modular design allows for efficient integration of material grinding and dispersion with paint mixing and degassing, reducing non-value-added steps such as intermediate material transfer and temporary storage. This significantly shortens the production cycle for a single batch, improving equipment utilization and overall production efficiency. Moreover, from pretreatment to post-treatment filling, the entire material flow is completed within pipelines and sealed containers, effectively preventing the uncontrolled emission of volatile organic compounds such as active monomers and solvents from the UV paint, creating a clean production environment that meets stringent environmental regulations.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A preparation apparatus for an environmentally friendly UV-curable topcoat, characterized in that, include: The system includes a control auxiliary module, a pretreatment module, a paint mixing and purification module, and a filling module. The output of the control auxiliary module is connected to the pretreatment module, the paint mixing and purification module, and the filling module, respectively. The output of the pretreatment module is connected to the input of the paint mixing and purification module via a pipe, and the output of the paint mixing and purification module is connected to the input of the filling module via a pipe. The paint mixing and purification module includes a paint mixing kettle and a dynamic thin-film deaerator. The input pipe of the paint mixing kettle is connected to the output of the pretreatment module, and the output of the paint mixing kettle is connected to the input pipe of the dynamic thin-film deaerator. The output pipe of the dynamic thin-film deaerator is connected to the input of the filling module. The dynamic film degasser includes a cylindrical tank with a heating jacket and a high-speed turntable. The material input end of the tank is connected to the output end of the paint mixing kettle, and the material output end of the tank is connected to the filling module. The high-speed turntable is rotated and set at the bottom of the tank.

2. The preparation apparatus for environmentally friendly UV-curable topcoat according to claim 1, characterized in that, The pretreatment module includes a premixing kettle and a disc mill. The output end of the premixing kettle is connected to the input end of the disc mill via a pipeline; the output end of the disc mill is connected to the input end of the paint mixing kettle via a pipeline.

3. The preparation apparatus for environmentally friendly UV-curable topcoat according to claim 2, characterized in that, The pretreatment module also includes a cooling unit, which is located between the disc mill and the paint mixing tank.

4. The preparation apparatus for environmentally friendly UV-curable topcoat according to claim 3, characterized in that, The pretreatment module also includes a vacuum feeding system and a first metering pump. The output of the vacuum feeding system and the output of the first metering pump are respectively connected to the input of the premixing vessel via pipelines.

5. The preparation apparatus for environmentally friendly UV-curable topcoat according to claim 4, characterized in that, The paint mixing and purification module also includes a finished product storage tank. The input pipe of the finished product storage tank is connected to the material output end of the dynamic thin film deaerator, and the output end of the finished product storage tank is connected to the input pipe of the filling module.

6. The preparation apparatus for environmentally friendly UV-curable topcoat according to claim 5, characterized in that, The high-speed turntable is equipped with a stirring section, which is located on the top side surface of the high-speed turntable.

7. The preparation apparatus for environmentally friendly UV-curable topcoat according to claim 6, characterized in that, The stirring section is designed with raised strip-shaped ribs of a certain height.

8. The preparation apparatus for environmentally friendly UV-curable topcoat according to claim 7, characterized in that, The paint mixing and purification module also includes a second metering pump, the output pipe of which is connected to the input end of the paint mixing kettle.

9. The preparation apparatus for environmentally friendly UV-curable topcoat according to claim 8, characterized in that, The filling module includes a filling pump and a fully enclosed filling head. The input end of the filling pump is connected to the output end of the finished product storage tank, and the output end of the filling pump is connected to the fully enclosed filling head. The fully enclosed filling head is used to carry out the product filling process.

10. The preparation apparatus for environmentally friendly UV-curable topcoat according to claim 9, characterized in that, The control auxiliary module includes a PLC, an online viscometer, and a particle size analyzer. The online viscometer and particle size analyzer monitor the viscosity and particle size of the materials in the pipeline of the preparation device for environmentally friendly UV-curable topcoat online and transmit the monitoring data to the PLC in real time. The control terminal of the PLC is electrically connected to the pretreatment module, the paint mixing and purification module, and the filling module, respectively.

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