Nano-wave absorbing aerosol preparation device and method

Abstract

The present invention relates to the technical field of nano-wave-absorbing aerosol preparation, and particularly to a nano-wave-absorbing aerosol preparation device and method thereof. The device comprises a material injection port, a housing, and a drive motor, wherein a material discharge port is provided above the housing, and the drive motor is mounted below the housing. The device also comprises a processing mechanism and a power mechanism, wherein the processing mechanism is mounted inside the housing, and the power mechanism is mounted below the processing mechanism. The grinding disk in the processing mechanism rotates periodically under the drive of a fixed disk in the power mechanism, so that a base material is subjected to different temperatures when passing through different heights on a guide track. A limit block in the power mechanism cooperates with a sliding track to control the sliding trajectory of a driven component. The fixed disk achieves intermittent rotation at a certain angle under the pushing action of the sliding block, thereby continuously and steadily controlling the temperature of the base material and ensuring the stability of the material structure. The burning disk controls the temperature gradient and specifies the sintering cycle, thereby obtaining a base material with better performance.

Description

Technical Field

[0001] The present invention relates to the technical field of nanometer wave-absorbing aerosol preparation, and in particular to a nanometer wave-absorbing aerosol preparation device and a method thereof. Background Art

[0002] The absorbing materials currently used in military electronic equipment and combat weapon platforms are primarily designed to protect against centimeter-wave radars. Their stealth effectiveness against sensors such as meter-wave, millimeter-wave, and infrared radars is significantly reduced. Over-the-horizon radars, lidars, and multi-frequency signal radars, which are already in use or under development in various countries around the world, all possess strong anti-stealth capabilities.

[0003] Existing nano-absorbent aerosol preparation devices and methods require fine grinding during the preparation process to ensure that the base material forms a uniform nano-scale material after subsequent processing. The ground material should be subjected to high-temperature calcination as soon as possible and avoid contact with air. The absorbing material is composed of ferrite, which needs to be synthesized under high-temperature conditions, which involves high-temperature sintering and heat treatment processes. Existing preparation devices generally adopt a method of uniform heating after a single addition. The spacing between the base materials is small at the initial addition, and the high temperature of the external environment will quickly heat the base materials near the heating layer, resulting in a limited amount of material being added at a time and low work efficiency. In addition, the ground material needs to rely on a sealed environment and be heat-treated as soon as possible, and the manufacturing cost of the additional feeding channel is high.

[0004] In view of the above situation, in order to overcome the above technical problems, the present invention designs a nano-wave absorbing aerosol preparation device and method thereof, which solves the above technical problems. Summary of the Invention

[0005] The technical purpose of the present invention is to finely grind the raw materials of ferrite and then calcine them at high temperature as quickly as possible without contact with the external environment. During the calcination process, the temperature of the calcination environment is kept stable, and a high degree of matching between the feeding speed and the calcination cycle is achieved to improve work efficiency.

[0006] In order to achieve the above technical objectives, the present invention provides the following technical solutions:

[0007] The present invention provides a nano-wave-absorbing aerosol preparation device and method, comprising a material injection port, a housing, and a drive motor. A material discharge port is provided above the housing, and the drive motor is mounted below the housing. The device also comprises a processing mechanism and a power mechanism. The processing mechanism is mounted inside the housing, and the power mechanism is mounted below the processing mechanism. The grinding disc in the processing mechanism is driven by a fixed disc in the power mechanism to periodically rotate a certain angle, so that the base material is subjected to different temperatures when passing through different heights on a guide track. The limit block in the power mechanism cooperates with the sliding track to control the sliding trajectory of the driven component, and the fixed disc achieves a fixed-angle gap rotation under the pushing action of the sliding block.

[0008] The processing mechanism includes a grinding disc, a grinding assembly, a heat insulation cover and a heating block; the grinding disc is fixedly installed inside the shell, the grinding assembly is installed below the grinding disc, and the heat insulation cover is installed at the lower end of the axis of the grinding assembly. The grinding assembly relies on a power assembly to rotate, and the rotating rod must pass through the heat insulation cover, so installing it at the lower end of the axis is beneficial to the overall mechanism layout. The cross-sectional shape of the heat insulation cover is a concave terrace shape. The concave terrace shape is to form an insulating environment with the heating block to save energy. The lower surface of the heat insulation cover is stepped with a stepped collection track to obtain a larger area to accelerate the discharge of excess organic matter during the burning process. The heating block is installed below the heat insulation cover.

[0009] The grinding assembly includes a rotating rod, a fixed bracket, a connecting block, a movable bracket, a grinding block, a feed rod and a discharge channel. The rotating rod is installed at one end of the power assembly, the fixed bracket is installed on both sides of the rotating rod, and the connecting block is eccentrically installed at one end of the rotating rod. The eccentric installation makes the rotation range of the movable bracket wider, thereby obtaining a better grinding effect. The movable bracket is movably installed below the connecting block, and the movable bracket and the fixed bracket are vertically arranged. The vertical arrangement is conducive to enhancing the working stability of the entire grinding assembly. The grinding block is installed below the movable bracket, and one end of the feed rod is fixedly installed below the grinding disc. The discharge channel is opened in the middle of the rotating rod, and the discharge channel is an annular hollow structure.

[0010] The heating block includes a burning disk, a guide rail and a discharge port. The burning disk is installed below the heat insulation cover. The burning disk is shaped like a boss. The boss shape is conducive to increasing the heating area of ​​the surface and dividing the temperature into steps, thereby ensuring that the temperature area of ​​each area is consistent and providing more heat at a lower height. In this way, when the hot air flow rises, the temperature in the entire heat insulation cover can be kept in dynamic balance. The guide rail is installed above the burning disk. The guide rail is in a spiral line shape along the upper and lower end surfaces of the burning disk. The spiral line shape is conducive to enhancing the heating effect, thereby saving energy cost expenditure. In the process of rotation of the heating block, the spiral line shape can cooperate with the boss-shaped heating block to assist the base material to move outward under the action of gravity. The discharge port is arranged in an array around the circumference of the burning disk inside the guide rail.

[0011] The power mechanism includes a fixed plate, a limit block, a driving gear, a coupling block and a driven assembly. The fixed plate is installed inside the shell. The limit block is fixedly installed on the fixed plate in a circular array. The number of limit blocks depends on the required rotation angle each time. The limit block is composed of two arc surfaces with different radians. The outer arc surface of the limit block and the fixed plate have the same radian to achieve smooth movement. The driving gear is installed on the fixed plate, the coupling block is installed on the driving gear, and the driven assembly is installed on one side of the driving gear.

[0012] The fixed plate includes a fixed ring, a sliding rail, a mounting hole, an extension block and a unloading block. The fixed ring is installed inside the shell, and the sliding rail is fixedly installed inside the fixed ring. The sliding rail is in the shape of a cross. The cross-shaped sliding rail is relatively stable, and the force conditions on the middle part tend to be the same. There are arc surfaces between adjacent sliding rails. On the one hand, the arc surface limits the sliding trajectory of the sliding block, and on the other hand, it helps the sliding block to adjust the direction, so that the jamming phenomenon is reduced. The mounting hole is opened at the center position of the fixed ring, and a rotating rod is installed on the mounting hole. The rotating rod is responsible for providing power to the grinding assembly. The extension block circumferential array is installed around the mounting hole, and the unloading block is installed on the side of the extension block.

[0013] The driven assembly includes a rotating block, a driven gear, a mating block and a sliding block. The rotating block is installed inside the coupling. The rotating block is shaped like a cymbal. The cymbal-shaped rotating block has less rotational friction in the coupling, which is beneficial to extending its service life. The driven gear is installed below the rotating block, the mating block is installed below the driven gear, and the sliding block is installed on one side of the mating block. The center of the sliding block is located on the extension line of the center line of the mating block, and the sliding block and the mating block are on the same straight line. Only in this way can the intermittent rotation effect of the power assembly be achieved.

[0014] The shape of the mating block is a superior angle sector, which has good support and a larger contact area in the sliding contact with the limit block, thereby improving the movement stability. The outer arc surface of the mating block and the inner arc surface of the limit block have the same curvature. Such a setting can avoid scratching and reduce the possibility of jamming. The shape of the sliding block is a key shape, and the two ends of the key shape are circular arcs, which is conducive to reducing friction during the sliding process. The two sides of the sliding block are symmetrically provided with arc surfaces. The setting of the arc surface can adjust the shape of the sliding block, avoiding jamming while also facilitating the work of the lubricating oil.

[0015] The shape of the discharge block is a sloped trapezoid, which can cooperate with gravity to provide an outward pushing force on the material when rotating, thereby assisting in material transportation. The height value of the discharge block in the direction of rotation around the mounting hole decreases with the direction of the guide track. The height value of the discharge block close to the mounting hole is greater than the side away from the mounting hole. In this way, the material in the discharge channel will not be seriously accumulated and blocked. Once the weight above is large, the material will be discharged along the direction of the height difference of the discharge block.

[0016] A method for preparing a nanometer wave-absorbing aerosol, comprising the following steps:

[0017] S1: Select the composition of each element according to the wave-absorbing characteristics of the material, and use the orthogonal method to prepare the wave-absorbing nanopowder in different proportions. The wave-absorbing nanopowder, base phase adhesive material and additives are mixed and dispersed and added into the shell through the injection port;

[0018] S2: The driving motor drives the power mechanism to start working, and the rotating rod connected to the driving gear drives the grinding block to rotate, grinding the absorbing nano-powder, base phase adhesive material and additives into fine particles;

[0019] S3: Using the citrate sol-gel method, the cations in the system are complexed with citric acid molecules with multifunctional groups to achieve uniform mixing at the atomic level to form the absorbing aerosol base material;

[0020] S4: The absorbing aerosol base material is added into the heat shield, and the burning disk burns the base material at high temperature to form a nano-scale absorbing material of high purity europium-ferrite. The remaining organic matter is discharged through the collection track during the burning process;

[0021] S5: Conduct research on europium-ferrite nanomaterials; study electrical and magnetic properties; analyze the magnetic permeability, dielectric constant and microwave attenuation of absorbers.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention provides a power mechanism and a processing mechanism to finely grind the raw materials to form a nano-scale base material with uniform texture. The ground material is kept inside the shell for high-temperature burning, during which the base material is prevented from contacting with air. In the high-temperature environment formed by the heat insulation cover and the heating block, the base material is continuously and steadily temperature-controlled to ensure the stability of the material structure. The feeding cycle and the burning time are matched, thereby obtaining a base material with better performance and improving work efficiency.

[0024] 2. The present invention forms a sealed high-temperature environment by setting a processing mechanism, a spiral linear heating block and a heat insulation cover, so that the base material is burned at different temperatures at different heights on the guide track; during the burning process, excess organic matter is quickly discharged through the collection flow channel.

[0025] 3. The present invention sets a power mechanism, in which a limit block cooperates with a sliding track to control the sliding trajectory of the driven component. The fixed plate realizes intermittent rotation at a certain angle under the pushing action of the sliding block, thereby ensuring that the base material can completely pass through the burning process and ensure the purity of the base material. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0027] The above and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is an exploded view of the processing mechanism structure of the present invention;

[0030] Figure 3 Schematic diagram of the grinding assembly structure of the present invention;

[0031] Figure 4 is a schematic cross-sectional view of the grinding assembly of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the heat shield of the present invention;

[0033] Figure 6 This is a schematic diagram of the heating block structure of the present invention and an enlarged diagram of the details;

[0034] Figure 7This is a schematic diagram of the installation position of the discharge block and the rotating rod of the present invention;

[0035] Figure 8 This is a schematic diagram of the positions of the discharge block and the rotating rod during operation of the present invention;

[0036] Figure 9 It is a schematic structural diagram of the power mechanism of the present invention;

[0037] Figure 10 It is a structural schematic diagram of the fixed disk of the present invention;

[0038] Figure 11 It is a schematic structural diagram of the driven component of the present invention;

[0039] Figure 12 It is a schematic flow chart of the method of the present invention.

[0040] In the figure: 1. injection port; 2. shell; 3. processing mechanism; 31. grinding disc; 32. grinding assembly; 321. rotating rod; 322. fixed bracket; 323. connecting block; 324. movable bracket; 325. grinding block; 326. feeding rod; 327. discharge channel; 33. heat shield; 331. collecting track; 34. heating block; 341. burning disc; 342. guide track; 343. discharge port; 344. extension block; 345. unloading block; 4. power mechanism; 41. fixed disc; 411. fixing ring; 412. sliding track; 413. mounting hole; 42. limit block; 43. driving gear; 44. coupling block; 45. driven assembly; 451. rotating block; 452. driven gear; 453. matching block; 454. sliding block; 5. driving motor. DETAILED DESCRIPTION

[0041] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0042] like Figures 1 to 12 As shown, the present invention provides a nano-wave absorbing aerosol preparation device and method, including a material injection port 1, a housing 2 and a drive motor 5. The housing 2 is provided with a discharge port on the top, and the drive motor 5 is installed below the housing 2; it also includes a processing mechanism 3 and a power mechanism 4. The processing mechanism 3 is installed inside the housing 2, and the power mechanism 4 is installed below the processing mechanism 3. The grinding disk 31 in the processing mechanism 3 is driven by the fixed disk 41 in the power mechanism 4 to periodically rotate a certain angle, so that the base material is subjected to different temperatures when passing through different heights on the guide track 342; the limit block 42 in the power mechanism 4 cooperates with the sliding track 412 to control the sliding trajectory of the driven component 45, and the fixed disk 41 achieves a fixed angle gap rotation under the pushing action of the sliding block 454.

[0043] like Figures 2 to 7 As shown, the processing mechanism 3 includes a grinding disc 31, a grinding assembly 32, a heat insulation cover 33 and a heating block 34; the grinding disc 31 is fixedly installed inside the shell 2, and the grinding assembly 32 is installed below the grinding disc 31. The grinding disc 31 is used to cooperate with the grinding assembly 32 to perform high-precision grinding on the material. The heat insulation cover 33 is installed at the lower end of the axis of the grinding assembly 32. The heat insulation cover 33 and the heating block 34 are used to form a high-temperature insulation environment to burn and purify the base material. The grinding assembly 32 relies on the power component to rotate, and the rotating rod 321 must pass through the heat insulation cover 33, so it is installed at the lower end of the axis to facilitate the overall mechanism layout. The cross-sectional shape of the heat insulation cover 33 is a concave terrace. In order to cooperate with the heating block 34 to form an insulation environment, thereby saving energy, the lower surface of the heat insulation cover 33 is stepped with a stepped collection track 331, so as to obtain a larger area to accelerate the discharge of excess organic matter during the burning process. The heating block 34 is installed below the heat insulation cover 33.

[0044] During operation, an orthogonal method is used to prepare absorbing nanopowders in different proportions. The absorbing nanopowders, base phase adhesive materials and additives are mixed and dispersed and added to the interior of the shell 2 through the injection port 1; the driving motor 5 drives the power mechanism 4 to start working, and the rotating rod 321 connected to the driving gear 43 drives the grinding block 325 to rotate, grinding the absorbing nanopowders, base phase adhesive materials and additives into fine particles; the fine particles are added to the heat insulation cover 33, and the calcination disk 341 calcines the base material at high temperature to form a nano-scale absorbing material of europium-ferrite with high purity. The remaining organic matter is discharged through the collection track 331 during the calcination process.

[0045] like Figure 3 and Figure 4As shown, the grinding assembly 32 includes a rotating rod 321, a fixed bracket 322, a connecting block 323, a movable bracket 324, a grinding block 325, a feeding rod 326 and a discharge channel 327. The rotating rod 321 is installed at one end of the power assembly. The rotating block 451 is used to provide the smooth rotational power output by the power assembly to the grinding assembly 32 for grinding. The fixed bracket 322 is installed on both sides of the rotating rod 321. The fixed bracket 322 is used to fix the eye module on the rotating rod 321. The connecting block 323 is eccentrically installed at one end of the rotating rod 321. The connecting block 323 is used to connect the rotating rod 321 and the movable bracket 324 , and through eccentric installation, the rotation range of the movable bracket 324 is wider, thereby obtaining a better grinding effect. The movable bracket 324 is movably installed below the connecting block 323, and the movable bracket 324 and the fixed bracket 322 are vertically arranged. The vertical arrangement is beneficial to enhancing the working stability of the entire grinding assembly 32. The grinding block 325 is installed below the movable bracket 324, and one end of the feeding rod 326 is fixedly installed below the grinding disc 31. The discharge channel 327 is opened in the middle of the rotating rod 321. The discharge channel 327 is an annular hollow structure. The annular hollow structure can accommodate more materials and thus improve work efficiency.

[0046] During operation, the rotating rod 321 obtains smooth rotational power in the power mechanism 4, and the rotating rod 321 drives the fixed bracket 322 to rotate coaxially and at the same frequency with itself. The movable bracket 324 connected to the connecting block 323 is eccentrically set, and the movable bracket 324 and the connecting block 323 are connected by a ball hinge. Therefore, the movable bracket 324 will increase the micro-vibration effect in multiple directions, thereby improving the grinding efficiency.

[0047] like Figure 6 and Figure 7 As shown, the heating block 34 includes a burning disk 341, a guide rail 342 and a discharge port 343. The burning disk 341 is installed below the heat insulation cover 33. The burning disk 341 is in the shape of a boss. The boss shape is conducive to increasing the heating area of ​​the surface and dividing the temperature into steps, thereby ensuring that the temperature area of ​​each area is consistent and providing more heat at a lower height. In this way, when the hot air flow rises, the temperature in the entire heat insulation cover 33 can be kept in dynamic balance. The guide rail 342 is installed above the burning disk 341. A resistance wire is provided in the guide rail 342 for resistance heating. The guide rail 342 is in the shape of a spiral line along the upper and lower end surfaces of the burning disk 341. The spiral line shape is conducive to enhancing the heating effect, thereby saving energy cost expenses. In the process of rotation of the heating block 34, the spiral line shape can cooperate with the boss-shaped heating block 34 to assist the base material to be pushed outward under the action of gravity. The discharge port 343 is arranged in a circular array around the circumference of the burning disk 341 inside the guide rail 342.

[0048] During operation, the base material is placed into the heat insulation cover 33, and the heating block 34 starts working to burn the base material at high temperature, and ensure that the average temperature of the entire burning disk 341 is in a dynamic equilibrium state. The excess organic matter is quickly discharged through the collection flow channel under high temperature. The heating block 34 is driven by the fixed plate to achieve periodic rotation, thereby cooperating with the spiral line-shaped guide flow channel to evenly heat the base material in the region. During this period, the discharge port 343 can also assist in the even distribution of the base material.

[0049] like Figure 6 、 Figure 7 and Figure 8 As shown, the shape of the discharge block 345 is a sloped trapezoid. The sloped trapezoid can cooperate with gravity to provide an outward pushing force on the material when rotating, thereby assisting in material transportation. The height value of the discharge block 345 in the rotation direction around the mounting hole 413 decreases with the direction of the guide rail 342. The height value of the discharge block 345 close to the mounting hole 413 is greater than the side away from the mounting hole 413. In this way, the material in the discharge channel 327 will not be seriously accumulated and blocked. Once the weight above is large, the material will be discharged in the direction of the height difference of the discharge block 345; 4 rotating push plates are also provided at the lower end of the rotating rod. The rotating push plates can rotate up to 90° along the rotation direction of the discharge block 345, and a spring is used at the rotating shaft to ensure the rebound force.

[0050] During operation, after the material is ground by the grinding assembly 32, it enters the discharge channel 327 through the hollow feed rod 326 and accumulates. The heating block 34 intermittently rotates 90°, and the discharge block 345 is driven to rotate. Under the action of gravity and the height difference of the discharge block 345, the rotating push plate can assist in scraping the material from the upper surface of the discharge block 345, thereby achieving a better unloading effect. The material is discharged around the discharge block 345, thereby continuously being burned and purified.

[0051] like Figure 8 、 Figure 9 and Figure 10 As shown, the power mechanism 4 includes a fixed disk 41, a limit block 42, a driving gear 43, a coupling block 44 and a driven component 45. The fixed disk 41 is installed inside the shell 2. The fixed disk 41 is used to drive the heating block 34 to rotate periodically. The limit blocks 42 are fixedly installed in a circular array on the fixed disk 41. The limit blocks 42 are used to limit the motion trajectory of the correction matching block 453. The number of limit blocks 42 depends on the requirements of each rotation angle. The limit blocks 42 are composed of two arc surfaces with different radians. The outer arc surface of the limit block 42 and the fixed disk 41 have the same radian to obtain smooth movement. The driving gear 43 is installed on the fixed disk 41, the coupling block 44 is installed on the driving gear 43, and the driven component 45 is installed on one side of the driving gear 43.

[0052] During operation, the driving gear 43 rotates under the drive of the driving motor 5, the driven component 45 is meshed with the driving gear 43 and revolves around the driving gear 43 under the control of the coupling, and periodically drives the fixed disk 41 to rotate a certain angle. By adjusting the tooth ratio of the driven component 45 and the driving gear 43, and adjusting the shape of the fixed disk, the multi-stage rotation speed ratio of the grinding component 31 and the heating block 34 can be regulated, thereby ensuring the grinding effect of the grinding component 31 and the sintering cycle of the heating block 34.

[0053] like Figure 9 As shown, the fixed disk 41 includes a fixing ring 411, a sliding rail 412, a mounting hole 413, an extension block 344 and a discharge block 345. The fixing ring 411 is installed inside the shell 2. The fixing ring 411 is used to fix the heating block 34. The sliding rail 412 is fixedly installed inside the fixing ring 411. The sliding rail 412 is in the shape of a cross. The cross-shaped sliding rail 412 is relatively stable and the force conditions on the middle part tend to be the same. There is an arc surface between adjacent sliding rails 412. On the one hand, the arc surface limits the sliding trajectory of the sliding block 454, and on the other hand, it helps the sliding block 454 adjust its direction, so that the jamming phenomenon is reduced. The mounting hole 413 is opened at the center position of the fixing ring 411. A rotating rod 321 is installed on the mounting hole 413. The rotating rod 321 is responsible for providing power to the grinding assembly 32. The extension blocks 344 are installed in a circular array around the mounting hole 413. The discharge block 345 is installed on the side of the extension block 344.

[0054] like Figure 10 As shown, the driven assembly 45 includes a rotating block 451, a driven gear 452, a mating block 453 and a sliding block 454. The rotating block 451 is installed inside the coupling. The rotating block 451 is shaped like a cymbal. The cymbal-shaped rotating block 451 has a small rotation friction in the coupling, which is beneficial to extending the service life. The driven gear 452 is installed below the rotating block 451, and the mating block 453 is installed below the driven gear 452. The sliding block 454 is installed on one side of the mating block 453. The center of the sliding block 454 is located on the extension line of the center line of the mating block 453. The sliding block 454 and the mating block 453 are on the same straight line. Only in this way can the intermittent rotation effect of the power assembly be achieved.

[0055] The shape of the mating block 453 is a superior angle sector, which has good support and a larger contact area in the sliding contact with the limit block 42, thereby improving the movement stability. The outer arc surface of the mating block 453 and the inner arc surface of the limit block 42 have the same curvature. Such a setting can avoid scratching and reduce the possibility of jamming. The shape of the sliding block 454 is a key shape, and the two ends of the key shape are circular arcs, which is conducive to reducing friction during the sliding process. The two sides of the sliding block 454 are symmetrically provided with arc surfaces. The setting of the arc surface can adjust the shape of the sliding block 454, avoiding jamming while also facilitating the work of the lubricating oil.

[0056] During operation, the mating block 453 and the sliding block 454 rotate around the driving gear 43 driven by the rotating block 451. The rotation of the sliding block 454 in the sliding track 412 will drive the fixed disk 41 to rotate. The sliding block 454 slides for one cycle and the fixed disk 41 rotates 90°. When the sliding block 454 does not slide in the sliding track 412, the mating block 453 and the limit block 42 cooperate with each other to ensure that the motion trajectory of the entire driven assembly 45 is controlled and corrected.

[0057] like Figure 11 As shown, a method for preparing a nanometer wave-absorbing aerosol comprises the following steps:

[0058] S1: Select the composition of each element according to the wave-absorbing properties of the material, and use the orthogonal method to prepare wave-absorbing nanopowders in different proportions. The wave-absorbing nanopowders, base phase adhesive material and additives are mixed and dispersed and added into the interior of the shell 2 through the injection port 1;

[0059] S2: The driving motor 5 drives the power mechanism 4 to start working, and the rotating rod 321 connected to the driving gear 43 drives the grinding block 325 to rotate, grinding the absorbing nano-powder, the base phase adhesive material and the additive into fine particles;

[0060] S3: Using the citrate sol-gel method, the cations in the system are complexed with citric acid molecules with multifunctional groups to achieve uniform mixing at the atomic level to form the absorbing aerosol base material;

[0061] S4: The absorbing aerosol base material is added into the heat shield 33. The calcination plate 341 calcines the base material at high temperature to form a nano-scale absorbing material of high purity europium-ferrite. The remaining organic matter is discharged through the collection track 331 during the calcination process.

[0062] S5: Conduct research on europium-ferrite nanomaterials; study electrical and magnetic properties; analyze the magnetic permeability, dielectric constant and microwave attenuation of absorbers.

[0063] In the research and development of electromagnetic wave absorbing materials, the domestic level is within the frequency range of 8 to 18 GHz, with a full-band absorption rate of 10 dB and a surface density of 5 kg / m 2 , with a thickness of 2mm. The europium-ferrite composite absorber nanopowder material studied in this project is designed based on the electron orbital properties of the elements that make up the europium-ferrite composite. Analysis of preliminary experimental results indicates that this absorber can significantly reduce its specific gravity and alter its magnetic, electrical, and optical properties. When the ferrite particle size decreases, under the influence of electromagnetic waves, more electrons within the microparticles' magnetic domains undergo rapid circulation, increasing domain consumption and causing a sharp attenuation of electromagnetic energy. This powder material is then released in the form of an aerosol, thereby enhancing the ferrite's absorbency and simplifying daily operation and maintenance. To date, no relevant literature has been reported on this project.

[0064] Studying the mechanism of action of absorbing materials: When electromagnetic waves pass through a medium, the amplitudes of the electric field intensity E and magnetic field intensity H decay along the propagation direction. These electromagnetic properties can be characterized by the complex permittivity ε and complex magnetic permeability μ. The attenuation of electromagnetic wave energy is related to the magnetic and electrical losses experienced by the medium. The larger the imaginary part of the permittivity ε or the imaginary part of the magnetic permeability μ, the greater the attenuation of electromagnetic waves. During electromagnetic wave propagation, reflections occur at dielectric interfaces. This can hinder radar detection in military applications and lead to signal overlap in wireless communications and television reception.

[0065] Ferrite is a widely used absorbing material. Its main characteristics as an absorbing material are its high absorption efficiency and a much thinner absorbing layer than materials with electrical losses. Ferrite is a well-researched and relatively mature absorbing material. Due to its excellent absorbing properties and low price, it has long been valued and remains a key component in radar absorbing materials. Ferrite has three basic crystal forms based on its microstructure: hexagonal magnetoplumbite (W-type), cubic spinel, and rare earth garnet. W-type hexagonal magnetoplumbite ferrite exhibits excellent absorbing properties, surpassing those of spinel and garnet ferrites.

[0066] Experiments have shown that reducing the particle size of absorbing materials can increase electromagnetic wave attenuation. In recent years, with the development of nanotechnology, nano-absorbing materials have gained significant attention. Because their particle size is much smaller than the wavelength of electromagnetic waves, nano-scale absorbing materials have much higher electromagnetic wave transmittance than conventional materials. This significantly reduces wave reflectivity and reflection, resulting in better matching properties. Furthermore, the specific surface area of ​​nanoparticles is much larger than that of traditional absorbing materials. When electromagnetic waves pass through nano-absorbing materials, more particles generate domain wall resonance and eddy current losses, resulting in higher electromagnetic wave absorption than absorbing materials with larger particles, demonstrating excellent absorption. Due to their unique surface and volume effects, nano-ferrite materials exhibit superior absorbing properties.

[0067] Ferrite materials are a well-researched and relatively mature magnetic dielectric absorber, offering strong absorption, wide bandwidth, and low cost. Ferrite alone cannot meet the requirements for wide bandwidth, thin thickness, and low surface density. Composite materials made by doping ferrite composite electromagnetic wave absorbers with trace amounts of rare earth oxides can significantly improve the material's overall absorption properties while reducing the required thickness. Most rare earth elements have unfilled 4f shells, resulting in an inherent atomic magnetic moment. The rare earth europium oxide used in this project exhibits a simple ferromagnetic / paramagnetic transition, while other rare earth oxides exhibit complex magnetic order transitions.

[0068] Because the aerosol base contains sticky components and particulates that can easily clog valves and nozzles, a valve assembled from an externally inserted liquid inlet tube, a dual-hole bypass valve base, and a high-strength stainless steel spring must be used. Considering the need for spraying in various directions during construction, a 360-degree omnidirectional spray valve is required. The inner gasket material must be resistant to solvents such as petroleum spirits, and the rubber gasket selected should have a low expansion rate, good solvent resistance, and excellent sealing performance.

[0069] During operation, the present invention uses an orthogonal method to prepare absorbing nanopowders in different proportions. The absorbing nanopowders, base phase adhesive materials, and additives are mixed and dispersed and added to the interior of the housing 2 through the injection port 1. The driving motor 5 drives the power mechanism 4 to start working, and the rotating rod 321 connected to the driving gear 43 drives the grinding block 325 to rotate, grinding the absorbing nanopowders, base phase adhesive materials, and additives into fine particles. The fine particles are added to the heat shield 33, and the calcination disk 341 calcines the base material at high temperature to form a nano-scale absorbing material of high purity europium-ferrite. The remaining organic matter is discharged through the collection track 331 during the calcination process. The rotating rod 321 obtains a stable rotating power in the power mechanism 4, and the rotating rod 321 drives the fixed bracket 322 to rotate coaxially with itself, and the movable bracket 324 connected to the connecting block 323 is eccentrically arranged, and the movable bracket 324 and the connecting block 323 are connected in a ball hinge manner, so the movable bracket 324 can increase the micro-vibration effect in multiple directions, thereby improving the grinding efficiency; the base material is put into the heat insulation cover 33, and the heating block 34 starts to work, burning the base material at high temperature, and ensuring that the average temperature of the entire burning disk 341 is in a dynamic equilibrium state, and the excess organic matter is heated at high temperature. The base material is quickly discharged through the collecting flow channel in the state of being in the state of being discharged quickly, and the heating block 34 is driven by the fixed plate to realize periodic rotation, thereby cooperating with the guide flow channel in the shape of the spiral line to uniformly heat the base material in the region. During this period, the discharge port 343 can also assist in the even distribution of the base material; the driving gear 43 rotates under the drive of the driving motor 5, and the driven component 45 is engaged with the driving gear 43 and revolves around the driving gear 43 under the control of the coupling, and periodically drives the fixed disk 41 to rotate a certain angle; the matching block 453 and the sliding block 454 rotate around the driving gear 43 under the drive of the rotating block 451, and the sliding block 454 is in the sliding track 412. The rotation will drive the fixed disk 41 to rotate. The sliding block 454 slides for one cycle and the fixed disk 41 rotates 90°. When the sliding block 454 does not slide in the sliding track 412, the matching block 453 and the limit block 42 cooperate with each other to ensure that the motion trajectory of the entire driven component 45 is controlled and corrected. After the material is ground by the grinding component 32, it enters the discharge channel 327 through the hollow feeding rod 326 and accumulates. The heating block 34 rotates 90° intermittently, and the discharge block 345 is driven to rotate. Under the action of gravity and the height difference of the discharge block 345, the material is discharged around the discharge block 345, thereby continuously being burned and purified.

[0070] The description herein is provided to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the overall principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A nanometer wave-absorbing aerosol preparation device, comprising a material injection port (1), a housing (2) and a drive motor (5), wherein a material discharge port is provided above the housing (2), and the drive motor (5) is installed below the housing (2); characterized in that: The invention also includes a processing mechanism (3) and a power mechanism (4), wherein the processing mechanism (3) is installed inside the housing (2), and the power mechanism (4) is installed below the processing mechanism (3). The power mechanism (4) includes a fixed disk (41) and a limit block (42), wherein the fixed disk (41) includes a fixed ring (411), a sliding track (412) and a mounting hole (413). The grinding disk (31) in the processing mechanism (3) rotates periodically under the drive of the fixed disk (41) in the power mechanism (4), so that the base material is subjected to different temperatures when passing through different heights on the guide track (342); the limit block (42) in the power mechanism (4) cooperates with the sliding track (412) to control the sliding track of the driven component (45), and the fixed disk (41) realizes intermittent rotation at a certain angle under the pushing action of the sliding block (454); The processing mechanism (3) comprises a grinding disc (31), a grinding assembly (32), a heat shield (33) and a heating block (34); the grinding disc (31) is fixedly mounted inside the housing (2), the grinding assembly (32) is mounted below the grinding disc (31), the heat shield (33) is mounted below the axis line of the grinding assembly (32), the cross-section of the heat shield (33) is concave, and a collecting track (331) is provided on the lower surface of the heat shield (33) in a stepped manner; the heating block (34) is mounted below the heat shield (33); The heating block (34) comprises a burning disc (341), a guide track (342), a discharge port (343), an extension block (344) and a discharge block (345).

2. The nanometer wave-absorbing aerosol preparation device according to claim 1, characterized in that: The grinding assembly (32) comprises a rotating rod (321), a fixed bracket (322), a connecting block (323), a movable bracket (324), a grinding block (325), a feeding rod (326) and a discharge channel (327). The rotating rod (321) is mounted at one end of the power assembly, the fixed bracket (322) is mounted on both sides of the rotating rod (321), the connecting block (323) is eccentrically mounted at one end of the rotating rod (321), the movable bracket (324) is movably mounted below the connecting block (323), the movable bracket (324) and the fixed bracket (322) are arranged vertically, the grinding block (325) is mounted above the movable bracket (324), one end of the feeding rod (326) is fixedly mounted below the grinding disc (31), and the discharge channel (327) is opened in the middle of the rotating rod (321), and the discharge channel (327) is an annular hollow structure.

3. The nanometer wave-absorbing aerosol preparation device according to claim 2, characterized in that: The burning disc (341) is installed below the heat insulation cover (33). The burning disc (341) is shaped like a boss. The guide track (342) is installed above the burning disc (341). The guide track (342) is in the shape of a spiral line along the upper and lower end surfaces of the burning disc (341). The discharge port (343) is arranged in a circular array around the circumference of the burning disc (341) and is opened inside the guide track (342).

4. The nanometer wave-absorbing aerosol preparation device according to claim 3, characterized in that: The shape of the discharge block (345) is a sloped trapezoid, and the height of the discharge block (345) in the rotation direction around the mounting hole (413) decreases along the direction of the guide track (342), and the height of the discharge block (345) close to the mounting hole (413) is greater than that of the side away from the mounting hole (413).

5. The nanometer wave-absorbing aerosol preparation device according to claim 4, characterized in that: The power mechanism (4) further comprises a driving gear (43), a coupling block (44) and a driven assembly (45); the fixed disk (41) is mounted inside the housing (2); the limit blocks (42) are fixedly mounted on the fixed disk (41) in a circumferential array; the limit blocks (42) are composed of two arc surfaces of different radians; the outer arc surface of the limit blocks (42) and the fixed disk (41) have the same radian; the driving gear (43) is mounted on the fixed disk (41); the coupling block (44) is mounted on the driving gear (43); and the driven assembly (45) is mounted on one side of the driving gear (43).

6. The nanometer wave-absorbing aerosol preparation device according to claim 5, characterized in that: The fixing ring (411) is installed inside the housing (2), the sliding track (412) is fixedly installed inside the fixing ring (411), the sliding track (412) is in a cross shape, and adjacent sliding tracks (412) are formed into arc surfaces. The mounting hole (413) is opened at the center of the fixing ring (411), the extension blocks (344) are installed in a circumferential array around the mounting hole (413), and the discharge block (345) is installed on the side of the extension block (344).

7. The nanometer wave-absorbing aerosol preparation device according to claim 6, characterized in that: The driven assembly (45) includes a rotating block (451), a driven gear (452), a matching block (453) and a sliding block (454). The rotating block (451) is installed inside the coupling. The rotating block (451) is shaped like a cymbal. The driven gear (452) is installed below the rotating block (451). The matching block (453) is installed below the driven gear (452). The sliding block (454) is installed on one side of the matching block (453). The center of the sliding block (454) is located on the extension line of the center line of the matching block (453).

8. The nanometer wave-absorbing aerosol preparation device according to claim 7, characterized in that: The shape of the matching block (453) is a reflex angle sector, the outer arc surface of the matching block (453) and the inner arc surface of the limiting block (42) have the same curvature, and the shape of the sliding block (454) is a key shape, and two side surfaces of the sliding block (454) are symmetrically provided with arc surfaces.

9. A method for preparing a nanometer wave-absorbing aerosol, the method using the nanometer wave-absorbing aerosol preparation device according to claim 8, characterized in that: The method for preparing the nano wave-absorbing aerosol comprises the following steps: S1: selecting the composition of each element according to the wave-absorbing characteristics of the material, and preparing wave-absorbing nanopowders in different proportions using an orthogonal method; the wave-absorbing nanopowders, the base phase bonding material, and the additives are mixed and dispersed and added to the interior of the shell (2) through the injection port (1); S2: The driving motor (5) drives the power mechanism (4) to start working, and the rotating rod (321) connected to the driving gear (43) drives the grinding block (325) to rotate, grinding the absorbing nanometer powder, the base phase bonding material and the additive into fine particles; S3: Using the citrate sol-gel method, the cations in the system are complexed with citric acid molecules with multifunctional groups to achieve uniform mixing at the atomic level to form the absorbing aerosol base material; S4: The absorbing aerosol base material is added into the heat shield (33), and the calcination plate (341) calcines the base material at high temperature to form a nano-scale absorbing material of high purity europium-ferrite. The remaining organic matter is discharged through the collection track (331) during the calcination process; S5: Conduct research on europium-ferrite nanomaterials; study electrical and magnetic properties; analyze the magnetic permeability, dielectric constant and microwave attenuation of absorbers.

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