High-speed dispersion kettle for polyurea coating production

Abstract

The utility model discloses a high-speed dispersion kettle for polyurea coating production, and belongs to the technical field of polyurea production equipment. The high-speed dispersion kettle comprises a kettle body, a bottom cover assembly, a top cover and a connecting piece; the bottom cover assembly and the top cover are respectively mounted at the top and the bottom of the kettle body through the connecting piece; the kettle body comprises a cylinder body, a return pipe and a dispersion part, the cylinder body comprises an outer cylinder, and a bottom plate and a top plate which are respectively arranged at two ends of the outer cylinder, and the return pipe and the dispersion part penetrate through two ends of the cylinder body; the lower end of the dispersing part is communicated with the output end of a screw pump in the bottom cover assembly and used for supplying materials between the barrel body and the bottom cover assembly to the position between the barrel body and the top cover, and the backflow pipe is used for enabling the materials between the barrel body and the top cover to flow back to the position between the bottom cover assembly and the barrel body. Through a series of innovative designs, the utility model overcomes the defects of the traditional dispersion kettle during treatment of high-viscosity materials, not only improves the mixing effect, but also simplifies the cleaning process, thereby improving the overall production efficiency and prolonging the service life of equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyurea production equipment, in particular to a high-speed dispersing kettle used for the production of polyurea coatings. Background Art

[0002] Polyurea is a high-performance coating formed by the reaction of isocyanate components with amino compounds under specific conditions. During the reaction process, as the cross-linking reaction between the isocyanate and the amine proceeds, the molecular weight gradually increases, forming a larger polymer network structure, which leads to a significant increase in viscosity.

[0003] To prepare high-quality polyurea coatings, high-speed dispersing reactors are typically used. These devices, equipped with a high-speed rotating dispersing disc or impeller, generate strong shear forces within a short period of time, rapidly dispersing the liquid component into the base material to form a uniform mixture. However, for polyurea, a material whose viscosity increases continuously during mixing, existing dispersing technology and equipment face significant challenges.

[0004] First, as the viscosity of the material changes, the shear force provided by the dispersion disc or impeller may not be able to adapt to this change, resulting in insufficient dispersion of the material. This is especially true when adding powders or other additives, which can easily lead to agglomeration. This not only affects the quality of the final product but also increases the difficulty of subsequent processing.

[0005] Secondly, polyurea's high viscosity makes it prone to adhering to the reactor walls and other internal components, especially in corners or unusually shaped areas of the equipment. These hard-to-reach areas become challenging to clean, and traditional cleaning methods struggle to completely remove residues. This not only shortens the equipment's lifespan but can also lead to product contamination between batches, impacting production efficiency and quality.

[0006] Therefore, when dealing with high-viscosity materials such as polyurea, how to optimize the design of the dispersion kettle to better adapt to viscosity changes while simplifying the cleaning process is one of the urgent issues to be solved in current technological development. Utility Model Content

[0007] The purpose of the utility model is to provide a high-speed dispersion kettle for the production of polyurea coatings to solve the above-mentioned problems existing in the prior art.

[0008] Technical solution: A high-speed dispersing kettle for the production of polyurea coatings, comprising a kettle body, a bottom cover assembly, a top cover and a connector, wherein the bottom cover assembly and the top cover are respectively mounted on the top and bottom of the kettle body through the connector;

[0009] The kettle body includes a cylinder body, a reflux pipe and a dispersion piece. The cylinder body includes an outer cylinder, and a bottom plate and a top plate respectively arranged at both ends of the outer cylinder. The reflux pipe and the dispersion piece both pass through both ends of the cylinder body.

[0010] The lower end of the dispersion member is connected to the output end of the screw pump in the bottom cover assembly, and is used to supply the material between the barrel and the bottom cover assembly to between the barrel and the top cover. The reflux pipe is used to reflux the material between the barrel and the top cover to between the bottom cover assembly and the barrel.

[0011] Furthermore, the bottom plate has the same structure as the top plate, a threaded hole is provided in the middle of the top plate, the dispersion piece is threadedly connected to the top plate and the bottom plate, a plurality of reflux holes are evenly opened around the periphery of the threaded hole, and the reflux pipe is welded to the reflux hole.

[0012] Furthermore, the dispersion component includes an integrally formed supply pipe and a dispersion horn, the supply pipe is threadedly connected to the bottom plate and the top plate, the dispersion horn is connected to the upper end of the supply pipe, the lower part of the supply pipe is connected to the output end of the screw pump, a reflux gap is formed between the maximum outer edge of the dispersion horn and the top cover, and the dispersion horn is provided with an overflow hole.

[0013] Furthermore, the connecting piece is configured as a quick lock, and sealing pieces are provided between the top cover and the top plate and between the bottom cover assembly and the bottom plate.

[0014] Furthermore, the bottom cover assembly includes a cover body, a screw pump, a drive motor and an inlet and outlet flange interface. The screw pump is installed on the cover body, and the output shaft extends to the outside of the cover body and is connected to the drive motor. The inlet and outlet flange interface is installed on the cover body.

[0015] Furthermore, a temperature control zone is formed between the barrel, the reflux pipe and the dispersion element, and the temperature control zone is filled with a temperature control medium. A temperature control unit is installed on the outer barrel of the barrel for regulating the temperature of the temperature control medium.

[0016] Furthermore, the outer wall of the outer cylinder is equipped with supporting legs, and the high-speed dispersion kettle further comprises a supporting frame, and the supporting frame matches the supporting legs.

[0017] Beneficial effect: Through a series of innovative designs, the utility model overcomes the shortcomings of traditional dispersion kettles in processing high-viscosity materials, not only improving the mixing effect, but also simplifying the cleaning process, thereby improving the overall production efficiency and the service life of the equipment.

[0018] Regarding mixing, this high-speed dispersing kettle utilizes a dispersing element connected to a screw pump, effectively adapting to changes in material viscosity and ensuring continuous material supply and circulation. The reflux gap and overflow hole between the dispersing horn and the top cover enhance shear forces, helping to evenly disperse high-viscosity materials and reduce agglomeration, thereby improving mixing quality. Furthermore, a temperature control unit regulates the temperature of the temperature-controlled medium, ensuring that the materials react at the optimal temperature, helping to maintain viscosity stability and further improving mixing.

[0019] In terms of cleaning, the connectors make it easier to disassemble and assemble the kettle body, bottom cover assembly, and top cover, thus simplifying the cleaning process. The bottom plate and top plate have the same structure, and the return pipe is welded to the return hole, which reduces the possibility of material stagnation and reduces the difficulty of cleaning.

[0020] In summary, the present invention, through its unique design, not only improves the mixing effect but also solves the cleaning problem, bringing substantial improvements to the production of polyurea coatings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is an exploded view of the present invention after the support frame is removed;

[0023] Figure 3 It is an exploded view of the kettle body in the utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the kettle body in the utility model;

[0025] Figure 5 It is a structural diagram of the dispersion member in the utility model.

[0026] Figure 6 It is a structural schematic diagram of the bottom cover of the utility model.

[0027] The figures are marked as follows: 1. kettle body; 11. outer cylinder; 12. bottom plate; 13. top plate; 14. reflux pipe; 15. dispersion part; 151. supply pipe; 152. dispersion horn; 153. overflow hole; 16. temperature control unit; 17. support foot; 18. temperature control chamber; 2. bottom cover assembly; 21. cover body; 22. screw pump; 23. drive motor; 24. inlet and outlet flange interface; 3. top cover; 4. connecting part; 5. support frame. DETAILED DESCRIPTION

[0028] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0029] like Figures 1-6As shown, a high-speed dispersing kettle for the production of polyurea coatings includes a kettle body 1, a bottom cover assembly 2, a top cover 3 and a connecting piece 4, wherein the bottom cover assembly 2 and the top cover 3 are respectively mounted on the top and bottom of the kettle body 1 through the connecting piece 4; wherein the kettle body 1 includes a barrel, a reflux pipe 14 and a dispersing piece 15, the barrel body includes an outer barrel 11, and a bottom plate 12 and a top plate 13 respectively arranged at both ends of the outer barrel 11, the reflux pipe 14 and the dispersing piece 15 both pass through both ends of the barrel body; the lower end of the dispersing piece 15 is connected to the output end of the screw pump 22 in the bottom cover assembly 2, for supplying the material between the barrel body and the bottom cover assembly 2 to between the barrel body and the top cover 3, and the reflux pipe 14 is used to reflux the material between the barrel body and the top cover 3 to between the bottom cover assembly 2 and the barrel body.

[0030] The design of this utility model aims to optimize the mixing and cleaning process of high-viscosity materials through a unique structural layout. The kettle body 1, the bottom cover assembly 2, the top cover 3 and the connector 4 constitute the basic frame of the entire dispersion kettle. The bottom cover assembly 2 and the top cover 3 are respectively installed on the top and bottom of the kettle body 1 through the connector 4 to form a closed working space. Among them, the kettle body 1 is composed of an outer cylinder 11, a bottom plate 12 and a top plate 13. The reflux pipe 14 and the dispersion piece 15 running through it not only realize the effective circulation of the material, but also ensure the smooth supply of the material from the bottom of the kettle to the top of the kettle through linkage with the screw pump 22 in the bottom cover assembly 2, and then return to the bottom through the top cover 3 area, forming a complete circulation path.

[0031] The design of this high-speed dispersion kettle not only improves the mixing effect of high-viscosity materials by optimizing the structural layout, but also greatly facilitates the cleaning process. The bottom cover assembly 2 and the top cover 3 are installed on the top and bottom of the kettle body 1 through quick-lock connectors 4. This quick disassembly design makes cleaning very easy. After disassembly, there are no hard-to-reach dead corners in the kettle body 1, the bottom cover assembly 2 and the top cover 3, so that the cleaning liquid can cover all surfaces, thereby completely removing residual materials and avoiding the shortcomings of traditional cleaning methods. The reflux stirring mechanism ensures a good circulation flow of the material in the kettle body through the cooperation of the reflux pipe 14 and the dispersion element 15, which helps to evenly distribute the material during the mixing process, reduces the possibility of material adhering to the kettle wall, and further simplifies the cleaning steps.

[0032] In short, this design significantly improves the mixing uniformity of high-viscosity materials by optimizing the structure and circulation mechanism. At the same time, through the design of easy disassembly and no dead angle, it simplifies the cleaning process and improves the equipment's utilization efficiency and cleaning effect.

[0033] like Figure 3-Figure 4 As shown, the bottom plate 12 has the same structure as the top plate 13. A threaded hole is provided in the middle of the top plate 13. The disperser 15 is threadedly connected to the top plate 13 and the bottom plate 12. Several return holes are evenly opened around the threaded hole, and the return pipe 14 is welded to the return hole.

[0034] While traditional dispersion discs or impellers can generate strong shear forces in a short period of time, for materials with increasing viscosity, such as polyurea, the shear forces they provide may not be sufficient to cope with these changes in viscosity, resulting in inadequate dispersion of the material. This can be particularly prone to agglomeration when adding powders or other additives. This design, however, utilizes the synergistic effect of the dispersion element 15 and the return pipe 14 to create a circulating flow of the material within the kettle, continuously providing sufficient shear forces and ensuring uniform mixing of the material at different viscosity levels.

[0035] Specifically, when adding powders or other additives, the disperser 15 and return pipe 14 cause the material to overflow at the bell-shaped opening of the disperser 15, reducing agglomeration. As the material viscosity increases, this circular flow helps maintain material uniformity and avoids uneven mixing caused by localized excessive viscosity. This design ensures excellent mixing even for high-viscosity materials, ensuring the quality of the final product.

[0036] like Figure 4 and Figure 5 As shown, the dispersion component 15 includes an integrally formed supply pipe 151 and a dispersion horn 152. The supply pipe 151 is threadedly connected to the bottom plate 12 and the top plate 13. The dispersion horn 152 is connected to the upper end of the supply pipe 151. The lower part of the supply pipe 151 is connected to the output end of the screw pump 22. A reflux gap is formed between the maximum outer edge of the dispersion horn 152 and the top cover 3. The dispersion horn 152 is provided with an overflow hole 153.

[0037] The design of the disperser 15 transports the material from the bottom of the kettle to the top via the supply pipe 151, where it is then dispersed through the dispersion horn 152. The design of the dispersion horn 152 creates a reflux gap between the top cover 3 and the dispersion horn 152. Combined with the overflow hole 153, this promotes a good circulation of the material within the kettle, enhancing the shear force of the material and promoting uniform dispersion of the material.

[0038] like Figure 1 and Figure 2 As shown, the connecting member 4 is configured as a quick lock, and sealing members are provided between the top cover 3 and the top plate 13 and between the bottom cover assembly 2 and the bottom plate 12 .

[0039] The quick lock simplifies the disassembly and assembly process of the equipment. The seal and the quick lock together ensure the sealing of the equipment during operation, effectively preventing material leakage and contamination. In actual operation, the design of the quick lock allows the user to easily complete the connection and separation between the top cover 3 and the bottom cover assembly 2 and the kettle body 1 without the use of additional tools. This quick disassembly and assembly mechanism is particularly suitable for occasions that require frequent cleaning or inspection, which can significantly reduce downtime and improve production efficiency. When it is necessary to change material batches or perform equipment maintenance, the operator can quickly open the top cover 3 and the bottom cover assembly 2 for internal cleaning, reducing production delays caused by cumbersome disassembly and assembly.

[0040] Furthermore, the use of seals ensures the equipment's tightness during operation. Whether operating under high pressure or high temperature conditions, seals effectively prevent material leakage, protecting the equipment from external contaminants and thus extending its service life. This is particularly important when handling high-viscosity materials such as polyurea coatings, which tend to adhere to the interior of the equipment. A poor seal can not only result in material waste but also pose a safety hazard.

[0041] Through the combination of quick-lock connectors and seals, the high-speed disperser not only performs well in mixing high-viscosity materials, but also shows great convenience in daily maintenance and cleaning, ensuring the reliability and economy of the equipment.

[0042] like Figure 6 As shown, the bottom cover assembly 2 includes a cover body 21, a screw pump 22, a drive motor 23 and an inlet and outlet flange interface 24. The screw pump 22 is installed on the cover body 21, and the output shaft extends to the outside of the cover body 21 and is connected to the drive motor 23. The inlet and outlet flange interface 24 is installed on the cover body 21.

[0043] When adding materials, the operator inputs the materials between the cover 21 and the base plate 12 through the inlet and outlet flange interface 24. The screw pump 22 is driven by the drive motor 23, and the rotating screw pushes the materials smoothly from the cover 21 to the supply pipe 151. The design of the screw pump 22 can provide a stable material conveying rate, and can maintain the continuity and uniformity of the material flow even when processing high-viscosity materials. After passing through the supply pipe 151, the material enters the dispersion horn 152 of the dispersion element 15 and is then evenly distributed in the kettle body 1, ensuring uniform mixing of the materials. The design of the screw pump 22 is relatively simple and easy to maintain.

[0044] like Figure 3 and Figure 4 As shown, a temperature control zone is formed between the barrel, the return pipe 14 and the dispersion member 15, and the temperature control zone is filled with a temperature control medium. A temperature control unit 16 is installed on the outer barrel 11 of the barrel for regulating the temperature of the temperature control medium.

[0045] The temperature control unit 16 plays a key role in controlling the temperature of the temperature control medium during the polyurea mixing process. It not only ensures that the materials react at a suitable temperature, but also simplifies the cleaning process. Specifically, the presence of the temperature control medium in the temperature control zone and the precise control of the medium temperature by the temperature control unit 16 provide ideal temperature conditions for the polyurea mixing process. During the cleaning process, the temperature control medium and the temperature control unit 16 also play an important role. High-viscosity materials tend to adhere to the kettle wall and other internal components, especially in dead corners or special structural areas of the equipment. The temperature control unit 16 can soften or dissolve the materials adhering to the kettle wall by adjusting the temperature of the temperature control medium, reducing the difficulty of cleaning. In addition, a flange interface for circulating the temperature control medium can be installed on the outer cylinder 11.

[0046] like Figure 1 As shown, the outer wall of the outer cylinder 11 is installed with a support leg 17, and the high-speed dispersion kettle also includes a support frame 5, which matches the support leg 17. The support frame 5 provides a simple solution for placing the kettle body 1. The support frame 5 raises the kettle body 1 to facilitate the removal of the bottom cover assembly 2.

[0047] When the utility model is in use, the assembly of the dispersion kettle is completed first, the kettle body 1 is stably placed on the support legs 17, and then the bottom cover assembly 2 is sealed and connected to the kettle body 1 using the connecting piece. Then, the dispersion piece 15 is rotated so that the lower end of the supply pipe 151 is threadedly connected to the output end of the screw pump 22, and then the top cover 3 is buckled on the kettle body 1 and sealed and connected with the connecting piece 4.

[0048] When polyurea material mixing is required, the kettle body 1 is preheated using the temperature control unit 16. The material is then fed into the cover 21 through the inlet and outlet flanges 24. During this process, the screw pump 22 is activated to pump the material upward along the disperser 15. As the material overflows from the dispersion horn 152, it undergoes shear mixing. The overflow holes 153 further enhance the shear mixing. The material overflowing from the disperser 15 falls onto the top plate 13 and flows back into the cover 21 through the return pipe 14. When the material is fully mixed, it is discharged from the inlet and outlet flanges 24.

[0049] When the dispersion kettle needs to be cleaned, the cleaning liquid is supplied to the interior of the dispersion kettle from the inlet and outlet flange interface 24, and then the temperature control unit is used to increase the temperature of the kettle body 1 to reduce the viscosity of the mixed material, making it easier for the cleaning liquid to flush the remaining material, and the cleaning wastewater is discharged from the inlet and outlet flange interface 24. Finally, the top cover 3 can be disassembled through the connector 4, and the dispersion member 15 is rotated to cancel the connection between the kettle body 1 and the bottom cover assembly 2, and then the bottom cover assembly 2 is disassembled. There are structural dead corners in the disassembled dispersion kettle. Carefully check the cleaning quality and clean up any areas that do not meet the standards in a timely manner.

[0050] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the scope of protection of the present invention.

Claims

1. A high-speed dispersing kettle for the production of polyurea coatings, characterized in that: The invention comprises a kettle body (1), a bottom cover assembly (2), a top cover (3) and a connecting piece (4), wherein the bottom cover assembly (2) and the top cover (3) are respectively mounted on the top and bottom of the kettle body (1) via the connecting piece (4); The kettle body (1) comprises a barrel, a reflux pipe (14) and a dispersion piece (15); the barrel body comprises an outer barrel (11), and a bottom plate (12) and a top plate (13) respectively arranged at both ends of the outer barrel (11); the reflux pipe (14) and the dispersion piece (15) both pass through both ends of the barrel body; The lower end of the dispersing member (15) is connected to the output end of the screw pump (22) in the bottom cover assembly (2) and is used to supply the material between the barrel and the bottom cover assembly (2) to between the barrel and the top cover (3). The reflux pipe (14) is used to reflux the material between the barrel and the top cover (3) to between the bottom cover assembly (2) and the barrel.

2. A high-speed dispersing kettle for the production of polyurea coatings according to claim 1, characterized in that: The bottom plate (12) and the top plate (13) have the same structure. A threaded hole is provided in the middle of the top plate (13). The dispersion member (15) is threadedly connected to the top plate (13) and the bottom plate (12). A plurality of return holes are evenly provided around the periphery of the threaded hole. The return pipe (14) is welded to the return hole.

3. The high-speed dispersing kettle for the production of polyurea coatings according to claim 2, characterized in that: The dispersion member (15) includes an integrally formed supply pipe (151) and a dispersion horn (152). The supply pipe (151) is threadedly connected to the bottom plate (12) and the top plate (13). The dispersion horn (152) is connected to the upper end of the supply pipe (151). The lower part of the supply pipe (151) is connected to the output end of the screw pump (22). A reflux gap is formed between the maximum outer edge of the dispersion horn (152) and the top cover (3). The dispersion horn (152) is provided with an overflow hole (153).

4. The high-speed dispersing kettle for the production of polyurea coatings according to claim 3, characterized in that: The connecting member (4) is configured as a quick lock, and sealing members are provided between the top cover (3) and the top plate (13) and between the bottom cover assembly (2) and the bottom plate (12).

5. The high-speed dispersing kettle for the production of polyurea coatings according to claim 4, characterized in that: The bottom cover assembly (2) comprises a cover body (21), a screw pump (22), a drive motor (23) and an inlet and outlet flange interface (24); the screw pump (22) is mounted on the cover body (21), and the output shaft extends to the outside of the cover body (21) and is transmission-connected to the drive motor (23); the inlet and outlet flange interface (24) is mounted on the cover body (21).

6. The high-speed dispersing kettle for the production of polyurea coatings according to claim 5, characterized in that: A temperature control zone is formed between the barrel, the return pipe (14) and the dispersion member (15), and the temperature control zone is filled with a temperature control medium. A temperature control unit (16) is installed on the outer barrel (11) of the barrel for regulating the temperature of the temperature control medium.

7. The high-speed dispersing kettle for the production of polyurea coatings according to claim 6, characterized in that: The outer wall of the outer cylinder (11) is provided with supporting feet (17), and the high-speed dispersion kettle further comprises a supporting frame (5), and the supporting frame (5) matches the supporting feet (17).

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