Vacuum stirring dispersion machine for self-healing anti-flashover paint production

Abstract

The utility model relates to the technical field of paint production equipment discloses a vacuum stirring dispersion machine for self -healing pollution flashover paint production, and the machine includes cauldron body, stirring mechanism, vacuum pumping mechanism and temperature control mechanism. Its stirring mechanism includes the coaxial high -speed dispersion part and low -speed stirring scraping wall part of setting, and high -speed dispersion part includes the central shaft and the high -speed dispersion disc fixed in its lower extreme, and low -speed stirring scraping wall part includes the outer shaft of setting in the outside of central shaft and the frame fixed in its lower extreme, and the edge of frame is equipped with the polytetrafluoroethylene scraper. The utility model discloses the above -mentioned structure, solves the technical contradiction of powerful dispersion nanometer material and the protection self -healing microcapsule integrity, and simultaneously through the scraper, vacuum and temperature control synergistic effect, effectively eliminates the stirring dead angle and bubble defect, and the paint product quality and performance stability have been improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of coating production equipment technology, and in particular to a vacuum mixing and dispersing machine for the production of self-healing anti-flashover coatings. Background Technology

[0002] Anti-flashover coatings, as an important technical means to improve the operational reliability of external insulation equipment in power systems, have been widely used. In recent years, in order to further improve the service life and performance stability of coatings, anti-flashover coatings with self-healing functions have become a research hotspot. This new type of coating, by introducing functional self-healing microcapsules into the formulation, can actively repair itself when minor damage occurs to the coating, thereby maintaining its long-term electrical insulation performance.

[0003] The manufacturing process of self-healing anti-flashover coatings plays a decisive role in their final performance. The formulation of these coatings is typically complex, containing two key components with drastically different requirements for stirring and dispersion conditions: one type consists of functional fillers such as nano-conductive materials, which require extremely strong mechanical shear forces to fully break up their aggregates and achieve uniform dispersion at the nanoscale—a prerequisite for ensuring the coating's basic anti-flashover performance; the other type comprises microcapsules that carry the self-healing function. These microcapsules are usually quite fragile and require gentle handling during production to prevent rupture due to excessive compression or shear forces, which could lead to premature failure of the self-healing agent.

[0004] Existing coating production equipment, such as conventional high-speed dispersers or mixers, typically only has a single mixing mode. While the powerful shear force of a high-speed disperser can meet the dispersion requirements of nanomaterials, it can also cause devastating damage to the self-healing microcapsules, rendering them ineffective. Conversely, while a low-speed mixer can better protect the structural integrity of the microcapsules, its gentle stirring action is far from sufficient to effectively disperse the aggregated nanoparticles, resulting in uneven coating performance and failing to achieve excellent anti-flashover effects.

[0005] Therefore, existing production equipment faces an irreconcilable technical contradiction when processing complex coating systems containing functional microcapsules and nanoparticles: it cannot simultaneously meet the conflicting process requirements of strong dispersion of nanomaterials and protection of the microcapsule structure in a single production process. This directly leads to unstable performance of the produced self-healing anti-flashover coating products, making it difficult to fully realize their design advantages. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a vacuum mixing and dispersing machine for the production of self-healing anti-flashover coatings. It aims to improve the problem that the equipment used for the production of self-healing anti-flashover coatings has a single function and cannot simultaneously meet the two conflicting process requirements of strong dispersion of nanomaterials and protection of self-healing microcapsule structures. This utility model aims to provide a vacuum mixing and dispersing machine for the production of self-healing anti-flashover coatings with an improved structure that can effectively solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a vacuum stirring and dispersing machine for the production of self-healing anti-flashover coatings, comprising: a vessel body, a stirring mechanism disposed inside the vessel body, a vacuuming mechanism communicating with the vessel body, and a temperature control mechanism disposed outside the vessel body.

[0008] The stirring mechanism has a composite structure consisting of a high-speed dispersing component and a low-speed stirring and scraping component arranged coaxially.

[0009] Furthermore, the central axis of the high-speed dispersion component passes through the interior of the outer axis of the low-speed stirring and scraping component. The high-speed dispersion disk of the high-speed dispersion component is located in the lower part of the central region of the vessel body. The frame of the low-speed stirring and scraping component is located on the outer periphery of the high-speed dispersion disk and extends to the inner wall of the vessel body. The high-speed dispersion component and the low-speed stirring and scraping component are combined in this coaxially nested manner.

[0010] Preferably, the high-speed dispersion component further includes a first motor, the output shaft of which is drivenly connected to the upper end of the central shaft.

[0011] Preferably, the low-speed stirring and scraping component further includes a second motor, a reducer, and a transmission belt. The output shaft of the second motor is connected to the input end of the reducer, and the output end of the reducer is driven to the upper end of the outer shaft via the transmission belt.

[0012] Preferably, blades are fixedly connected to the frame.

[0013] Preferably, a polytetrafluoroethylene (PTFE) scraper is fixedly connected to the edge of the frame, and the edge of the PTFE scraper is in close contact with the inner wall and bottom of the vessel.

[0014] Preferably, the vacuuming mechanism includes a vacuum pump, a gas pipe, and a valve, and the top of the vessel is connected to the vacuum pump's suction port through the gas pipe and the valve.

[0015] Preferably, the temperature control mechanism includes a jacket surrounding the outer wall of the vessel, and the jacket is provided with a heat transfer oil inlet and a heat transfer oil outlet.

[0016] Preferably, the vacuum stirring disperser further includes a support frame, and the vessel body is fixedly mounted on the support frame.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by setting a coaxial high-speed dispersion component and a low-speed stirring and scraping component, the technical contradiction between strong shear dispersion of nanomaterials and protection of the integrity of self-healing microcapsule structure in the prior art is solved. This achieves the effect of fully dispersing nanomaterials while avoiding microcapsule damage, and significantly improves the comprehensive performance of self-healing and anti-flashover of the coating.

[0018] 2. In this utility model, by setting up polytetrafluoroethylene scrapers that are closely attached to the inner wall and bottom of the reactor, and cooperating with the vacuum mechanism to operate synchronously, the problems of high viscosity materials easily sticking to the wall, resulting in uneven mixing, low heat transfer efficiency, and easy generation of air bubbles during stirring, which affect the density of the coating, are solved. This achieves the technical effects of eliminating stirring dead corners, improving temperature control accuracy, and obtaining high-quality coatings without air bubble defects, thus ensuring the stability of product quality. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a vacuum mixing and dispersing machine for the production of self-healing anti-flashover coatings proposed in this utility model; Figure 2 This is a schematic diagram of the reactor body of a vacuum stirring and dispersing machine for the production of self-healing anti-flashover coatings proposed in this utility model. Figure 3 This is a schematic diagram of the frame structure of a vacuum mixing and dispersing machine for the production of self-healing anti-flashover coatings proposed in this utility model. Figure 4 This is a schematic diagram of the air pipe section of a vacuum mixing and dispersing machine for the production of self-healing anti-flashover coatings proposed in this utility model.

[0020] Legend: 1. Support frame; 2. Kettle body; 3. Stirring mechanism; 301. First motor; 302. Central shaft; 303. High-speed dispersion disc; 304. Second motor; 305. Reducer; 306. Transmission belt; 307. Outer shaft; 308. Frame; 309. PTFE scraper; 310. Paddle; 4. Vacuuming mechanism; 401. Vacuum pump; 402. Gas pipe; 403. Valve; 5. Temperature control mechanism; 501. Heat transfer oil inlet; 502. Jacket; 503. Heat transfer oil outlet. Detailed Implementation

[0021] Please refer to Figures 1 to 4This utility model provides a vacuum stirring and dispersing machine for the production of self-healing anti-flashover coatings. It aims to solve the technical problems in existing coating production equipment, which lack a stirring mechanism 3 that can simultaneously achieve strong dispersion of nanomaterials and protection of microcapsule structures, and which is difficult to integrate vacuum degassing and precise temperature control functions.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the vacuum mixing and dispersing machine for producing self-healing anti-flashover coatings includes a support frame 1, a vessel body 2 fixedly mounted on the support frame 1, a mixing mechanism 3 disposed inside the vessel body 2, a vacuuming mechanism 4 connected to the vessel body 2, and a temperature control mechanism 5 disposed outside the vessel body 2. The core structure of the mixing mechanism 3 consists of a high-speed dispersing component and a low-speed mixing and scraping component arranged coaxially. The high-speed dispersing component includes a central shaft 302 and a high-speed dispersing disk 303 fixedly connected to the lower end of the central shaft 302. The high-speed dispersing component also includes a first motor 301, the output shaft of which is drivenly connected to the upper end of the central shaft 302 to drive the central shaft 302 and the high-speed dispersing disk 303 to rotate at high speed, thereby generating a strong shearing and dispersing effect on the material in the central area of ​​the vessel body 2. The low-speed mixing and scraping component includes an outer shaft 307 sleeved outside the central shaft 302 and a component fixedly connected to the lower end of the outer shaft 307. The frame 308 at the end has a coaxially nested structure that allows high-speed dispersion and low-speed stirring to work together without interfering with each other in space. The low-speed stirring and scraping component also includes a second motor 304, a reducer 305, and a transmission belt 306. The output shaft of the second motor 304 is connected to the input end of the reducer 305. The output end of the reducer 305 is driven to the upper end of the outer shaft 307 through the transmission belt 306, providing low-speed and stable rotational power to the outer shaft 307. A blade 310 is fixedly connected to the frame 308 for overall macroscopic stirring and mixing of the material in the vessel 2. A polytetrafluoroethylene scraper 309 is fixedly connected to the edge of the frame 308. The edge of the polytetrafluoroethylene scraper 309 is designed to be close to the inner wall and bottom of the vessel 2. When the frame 308 rotates, the polytetrafluoroethylene scraper 309 can scrape the material on the inner wall and bottom of the vessel 2, preventing material adhesion and improving heat exchange efficiency.

[0023] Please refer to the following carefully. Figure 1 , Figure 2 and Figure 4The vacuum pumping mechanism 4 includes a vacuum pump 401, an air pipe 402, and a valve 403. The air extraction port of the vacuum pump 401 is connected to the top of the vessel 2 through the air pipe 402 and the valve 403. The function of this connection is to continuously extract the air and air bubbles generated by the stirring of the material inside the vessel 2 during the stirring process, thereby forming and maintaining a vacuum environment inside the vessel 2. The temperature control mechanism 5 includes a jacket 502 surrounding the outer wall of the vessel 2. The jacket 502 is provided with a heat transfer oil inlet 501 and a heat transfer oil outlet 503. A closed circulation channel is formed between the jacket 502 and the outer wall of the vessel 2. By introducing heat transfer oil from the heat transfer oil inlet 501 and discharging it from the heat transfer oil outlet 503, the heat transfer oil is circulated within the jacket 502. This heating or cooling structure ensures precise and uniform control of the material temperature inside the vessel 2.

[0024] As a preferred implementation method, to achieve high-speed distribution functionality, please refer to... Figure 3 The high-speed dispersing component also includes a first motor 301. The output shaft of the first motor 301 is connected to the upper end of the central shaft 302 via a coupling. The first motor 301 is preferably a high-speed variable frequency motor to achieve precise adjustment of the rotation speed of the high-speed dispersing disc 303.

[0025] As another preferred embodiment, to achieve low-speed, high-torque stirring and wall-scraping functions, please refer to... Figure 3 The low-speed stirring and scraping component also includes a second motor 304, a reducer 305, and a transmission belt 306. The output shaft of the second motor 304 is fixedly connected to the input end of the reducer 305. The reducer 305 is preferably a planetary gear reducer 305 to provide a larger reduction ratio and output torque. The output end of the reducer 305 is driven to the upper end of the outer shaft 307 through the transmission belt 306. The transmission belt 306 is preferably a synchronous belt to ensure the accuracy of transmission.

[0026] As a further preferred embodiment, to enhance the macroscopic mixing effect, please refer to... Figure 2 The frame 308 is fixedly connected with blades 310 evenly distributed along the radial and axial directions. The blades 310 are preferably inclined blades 310, which can generate axial flow while driving the fluid to move circumferentially, thereby enhancing the overall circulation of materials in the vessel 2.

[0027] As a further preferred embodiment, to improve the wall-scraping effect and protect the microcapsules, please refer to... Figure 2 The edge of the frame 308 is fixedly connected to a polytetrafluoroethylene scraper 309 by bolts. The polytetrafluoroethylene scraper 309 has a low coefficient of friction and good chemical stability. The edge contour of the polytetrafluoroethylene scraper 309 is precisely matched with the inner wall and bottom curved surface of the vessel body 2, ensuring that the attached material can be continuously and gently scraped off during rotation.

[0028] As an optimization for overall structural stability, please refer to Figure 1 The vacuum mixing and dispersing machine also includes a support frame 1, and the vessel body 2 is fixedly installed on the platform of the support frame 1. The support frame 1 provides a stable and reliable installation foundation for the entire equipment.

[0029] Working principle: During coating production, the material is first added into the reactor body 2. The vacuum pump 4 is activated, and the vacuum pump 401 extracts air from the reactor body 2 through the air pipe 402 and valve 403 to create a vacuum environment. At the same time, the temperature control mechanism 5 is activated, and heat transfer oil enters the jacket 502 from the heat transfer oil inlet 501. After circulating on the outer wall of the reactor body 2, it flows out from the heat transfer oil outlet 503, adjusting the material in the reactor body 2 to the preset temperature. Subsequently, the stirring mechanism 3 is activated. The first motor 301 drives the central shaft 302, which in turn drives the high-speed dispersion disk 303 to rotate at high speed. The serrated edge of the high-speed dispersion disk 303 applies strong shearing and impact to the material in the central area of ​​the vessel body 2, effectively breaking up the agglomerated nanoparticles. At the same time, the second motor 304 is activated. After being reduced in speed and torque by the reducer 305, it drives the outer shaft 307 to rotate at low speed through the transmission belt 306. The outer shaft 307 drives the fixedly connected frame 308 and the blades 310 to rotate synchronously. The low-speed rotation of frame 308 and impeller 310 drives the overall material inside the vessel 2 to generate macroscopic circulation, achieving uniform mixing. During the rotation of frame 308, PTFE scrapers 309 fixed to the edge of frame 308 simultaneously scrape against the inner wall and bottom of vessel 2, scraping adhering material back into the main fluid. This prevents material from sticking to the wall and ensures that the heat from jacket 502 is efficiently transferred to the material. Furthermore, the flexible scraping of the scrapers avoids damage to the self-healing microcapsules. The entire stirring process is carried out continuously in a vacuum environment, ensuring that the final product is dense, bubble-free, and has uniform performance.

Claims

1. A vacuum mixing and dispersing machine for the production of self-healing anti-flashover coatings, comprising a vessel body (2), characterized in that: A stirring mechanism (3) is installed inside the vessel body (2); A vacuum mechanism (4) connected to the vessel body (2); Temperature control mechanism (5) is installed outside the vessel body (2); The stirring mechanism (3) includes a high-speed dispersing component and a low-speed stirring and scraping component arranged coaxially; the high-speed dispersing component includes a central shaft (302) and a high-speed dispersing disk (303) fixedly connected to the lower end of the central shaft (302); the low-speed stirring and scraping component includes an outer shaft (307) sleeved outside the central shaft (302) and a frame (308) fixedly connected to the lower end of the outer shaft (307).

2. The vacuum mixing and dispersing machine for producing self-healing anti-flashover coatings according to claim 1, characterized in that: The high-speed dispersion component also includes a first motor (301), the output shaft of which is driven to the upper end of the central shaft (302).

3. The vacuum mixing and dispersing machine for producing self-healing anti-flashover coatings according to claim 1, characterized in that: The low-speed stirring and scraping component also includes a second motor (304), a reducer (305), and a transmission belt (306); the output shaft of the second motor (304) is connected to the input end of the reducer (305), and the output end of the reducer (305) is driven to the upper end of the outer shaft (307) through the transmission belt (306).

4. A vacuum mixing and dispersing machine for producing self-healing anti-flashover coatings according to claim 1, characterized in that: A blade (310) is fixedly connected to the frame (308).

5. A vacuum mixing and dispersing machine for producing self-healing anti-flashover coatings according to claim 1, characterized in that: The frame (308) is fixedly connected to a polytetrafluoroethylene scraper (309) at its edge, and the edge of the polytetrafluoroethylene scraper (309) is in close contact with the inner wall and bottom of the vessel body (2).

6. A vacuum mixing and dispersing machine for producing self-healing anti-flashover coatings according to claim 1, characterized in that: The vacuum pumping mechanism (4) includes a vacuum pump (401), a gas pipe (402), and a valve (403); the top of the vessel body (2) is connected to the air extraction port of the vacuum pump (401) through the gas pipe (402) and the valve (403).

7. A vacuum mixing and dispersing machine for producing self-healing anti-flashover coatings according to claim 1, characterized in that: The temperature control mechanism (5) includes a jacket (502) surrounding the outer wall of the vessel body (2), and the jacket (502) is provided with a heat transfer oil inlet (501) and a heat transfer oil outlet (503).

8. A vacuum mixing and dispersing machine for producing self-healing anti-flashover coatings according to claim 1, characterized in that: The vessel body (2) is fixedly installed on the support frame (1).

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