Surface coating device for iron-silicon-aluminum soft magnetic powder production
By improving the mixing and screening components, the problem of uneven surface coating of iron-silicon-aluminum soft magnetic powder was solved, achieving uniform mixing and efficient screening, thereby improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LONGFENG NEW MATERIALS (HEZE) CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-01
AI Technical Summary
Existing surface coating devices for producing iron-silicon-aluminum soft magnetic powders have simple stirring structures that lead to uneven mixing, resulting in inconsistent coating thickness, which affects insulation value, reduces yield, and increases production costs.
An improved mixing and screening assembly is used, including a rotating column, stirring rod, scraper and curved blades for multi-directional mixing, combined with a screen and a dual-head motor to achieve vibration screening, ensuring uniform mixing and effective screening.
It improves the uniformity of the coating layer, reduces product scrap, increases yield and production efficiency, and ensures the performance and quality of the magnetic powder.
Smart Images
Figure CN224182075U_ABST
Abstract
Description
A surface coating device for producing iron-silicon-aluminum soft magnetic powder Technical Field
[0001] This utility model relates to the field of surface coating technology for iron-silicon-aluminum soft magnetic powder, and in particular to a surface coating device for the production of iron-silicon-aluminum soft magnetic powder. Background Technology
[0002] In the wave of rapid development of the modern electronics industry, various electronic products are constantly moving towards miniaturization, lightweighting, and high performance. This trend places extremely stringent requirements on the performance of electronic components. As one of the core materials for electronic components, the quality and performance of iron-silicon-aluminum soft magnetic powder directly affect the overall efficiency of electronic products. Due to its superior characteristics such as high permeability, low hysteresis loss, and good temperature stability, iron-silicon-aluminum soft magnetic powder is widely used in many key electronic devices such as switching power supplies, power inductors, and filters. With the booming development of emerging industries such as 5G communication, new energy vehicles, and the Internet of Things, the market demand for high-quality iron-silicon-aluminum soft magnetic powder has experienced explosive growth.
[0003] Existing surface coating devices for producing iron-silicon-aluminum soft magnetic powder mostly employ relatively simple stirring mechanisms in their mechanical structure. Typically, one or more stirring blades are installed within a closed container, driven by a motor to rotate and mix the soft magnetic powder and coating material. The underlying technology relies primarily on the kinetic energy transfer of mechanical stirring, attempting to ensure sufficient contact between the soft magnetic powder and the coating material for effective coating.
[0004] However, existing technologies have serious problems. During the surface coating and mixing of soft magnetic powder, the overly simple mixing structure and unreasonable impeller design prevent sufficient and uniform mixing of the soft magnetic powder inside the coating device. This results in difficulty in achieving omnidirectional and multi-angle contact between the soft magnetic powder and the coating material during the mixing process. Consequently, uneven mixing during the coating process leads to inconsistent coating layer thickness. This difference in coating layer thickness significantly affects the insulation value of the soft magnetic powder. If the insulation value fails to meet the standard, the product is highly likely to be scrapped, severely reducing the product yield, increasing production costs, and failing to meet the growing market demand for high-quality iron-silicon-aluminum soft magnetic powder. Therefore, a surface coating device for the production of iron-silicon-aluminum soft magnetic powder is proposed to solve the above problems. Summary of the Invention
[0005] To overcome the above deficiencies, this utility model provides a surface coating device for the production of iron-silicon-aluminum soft magnetic powder, which aims to improve the problem of uneven surface coating of iron-silicon-aluminum soft magnetic powder in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A surface coating device for producing iron-silicon-aluminum soft magnetic powder includes a coating machine housing, with an inlet at the top and an outlet at the bottom. A stirring assembly is installed inside the coating machine housing, a screening assembly is installed at the bottom of the coating machine housing, and a support frame is fixedly connected to the outer wall of the coating machine housing.
[0008] The stirring assembly includes a rotating column and multiple stirring rods. The two ends of the rotating column are rotatably connected inside the coating machine housing. A motor is fixedly connected to the outer wall of the coating machine housing. The output end of the motor is fixedly connected to the rotating column. The outer wall of the rotating column is fixedly connected to one end of the stirring rod. Scrapers are fixedly connected to the other ends of both sides of the stirring rod. Curved blades are fixedly connected to the outer wall of the scrapers.
[0009] As a further description of the above technical solution:
[0010] The screening assembly includes a screen, which is disposed at the bottom of the discharge port, and a fixing plate is fixedly connected to the outer walls on both sides of the screen;
[0011] As a further description of the above technical solution:
[0012] A baffle is fixedly connected to the inner wall of one of the two fixing plates, and a fixing block is fixedly connected to the outer wall of one of the two fixing plates;
[0013] As a further description of the above technical solution:
[0014] An elastic plate is fixedly connected to the outer wall of the fixed block, and the other end of the elastic plate is fixedly connected to the outer wall of another fixed block. A second fixed plate is fixedly connected to the outer wall of the other fixed block.
[0015] As a further description of the above technical solution:
[0016] A support frame is fixedly connected to the outer wall of the fixed plate two, and a waste bin is fixedly connected to the inner wall of the fixed plate two.
[0017] As a further description of the above technical solution:
[0018] A storage cart is slidably connected to the bottom of the second fixed plate, and a limit block is fixedly connected to the inner wall of the second fixed plate;
[0019] As a further description of the above technical solution:
[0020] A double-headed motor is fixedly connected to the inner wall of the fixed plate. A rotating column two is fixedly connected to the output end of the double-headed motor. A rotating shaft is fixedly connected to the rotating column two. A rotating rod is fixedly connected to the outer wall of the rotating shaft.
[0021] As a further description of the above technical solution:
[0022] The outer wall of the rotating rod is rotatably connected to a bracket, the other end of the bracket is rotatably connected to a rotating column three, the other end of the rotating column three is rotatably connected to a fixing plate three, and the top of the fixing plate three is fixedly connected to the bottom of the fixing plate one.
[0023] This utility model has the following beneficial effects:
[0024] In this invention, when coating the surface of soft magnetic powder, the motor is turned on, and the motor drives the rotating column to rotate. The rotating column drives the stirring rod to rotate, and the stirring rod drives the scraper to stir on the inner wall of the coating machine box. The scraper drives the curved blade to rotate, which achieves thorough and uniform stirring of the soft magnetic powder on the inner wall and inside of the coating machine box. The soft magnetic powder is fully mixed in multiple directions inside the coating machine box by the curved blade, avoiding uneven mixing that leads to inconsistent coating thickness, affecting the insulation value and causing product scrap. This reduces rework time and improves product yield and production efficiency.
[0025] In this invention, when screening the coated soft magnetic powder, the discharge port is opened, and the soft magnetic powder falls into the screen. Then, a dual-head motor is turned on to vibrate and screen the soft magnetic powder. The soft magnetic powder that has not clumped falls into the storage cart below for further processing, while the soft magnetic powder that has clumped falls into the waste bin through the vibration of the screen for further processing. This achieves the purpose of quickly screening the clumped soft magnetic powder, avoiding the clumping of the soft magnetic powder from causing uneven magnetic properties or affecting the uneven density of the product, thus reducing its compactness and improving the performance and quality of the product. Attached Figure Description
[0026] Figure 1 is a three-dimensional schematic diagram of a surface coating device for producing iron-silicon-aluminum soft magnetic powder according to the present invention.
[0027] Figure 2 is a schematic diagram of the stirring assembly of a surface coating device for producing iron-silicon-aluminum soft magnetic powder according to this utility model.
[0028] Figure 3 is a schematic diagram of the sieving component of a surface coating device for producing iron-silicon-aluminum soft magnetic powder according to this utility model.
[0029] Figure 4 is a top view of the sieving component of a surface coating device for producing iron-silicon-aluminum soft magnetic powder proposed in this utility model.
[0030] Legend:
[0031] 1. Covering housing; 2. Inlet; 3. Outlet; 4. Support frame one; 5. Motor; 6. Rotating column one; 7. Stirring rod; 8. Scraper; 9. Bending plate blade; 10. Screen; 11. Fixing plate one; 12. Baffle; 13. Fixing block; 14. Elastic plate; 15. Fixing plate two; 16. Support frame two; 17. Storage cart; 18. Waste bin; 19. Limiting block; 20. Dual-head motor; 21. Rotating column two; 22. Rotating shaft; 23. Rotating rod; 24. Bracket; 25. Rotating column three; 26. Fixing plate three. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Referring to Figures 1 and 2, one embodiment of this utility model is provided: a surface coating device for producing iron-silicon-aluminum soft magnetic powder, including a coating machine housing 1. The coating machine housing 1 is made entirely of high-strength stainless steel, which has excellent corrosion resistance and can effectively resist the erosion of various chemical reagents during the production of soft magnetic powder, ensuring the long-term stable operation of the equipment. The top of the coating machine housing 1 is provided with a feed inlet 2, and the bottom of the coating machine housing 1 is provided with a discharge outlet 3. A stirring component is provided inside the coating machine housing 1, a screening component is provided at the bottom of the coating machine housing 1, and a support frame 4 is fixedly connected to the outer wall of the coating machine housing 1.
[0034] The mixing assembly includes a rotating column 6 and multiple mixing rods 7. The two ends of the rotating column 6 are rotatably connected to the inside of the coating machine housing 1. It is made of high-strength alloy steel, which undergoes a special heat treatment process and has good wear resistance and fatigue resistance. A motor 5 is fixedly connected to the outer wall of the coating machine housing 1. The output end of the motor 5 is fixedly connected to the rotating column 6. The outer wall of the rotating column 6 is fixedly connected to one end of the mixing rods 7. It is made of stainless steel and has good wear resistance and corrosion resistance. The other ends of the mixing rods 7 on both sides are fixedly connected to scrapers 8. The outer wall of the scrapers 8 is fixedly connected to curved blades 9. Their unique curved shape can guide the material to be fully mixed in multiple directions during the mixing process, improving the uniformity and efficiency of the mixing.
[0035] Referring to Figures 1, 2, and 3, the screening assembly includes a screen 10, which is woven from high-strength, corrosion-resistant stainless steel. This screen effectively screens the coated soft magnetic powder by particle size. The screen 10 is installed at an angle, allowing any agglomerated soft magnetic powder to fall into the waste bin 18 via vibration. The screen 10 is located at the bottom of the discharge port 3. Fixing plates 11 are fixedly connected to the outer walls of both sides of the screen 10. These fixing plates 11 are made of steel plate, which has good strength and processing performance. Baffles 12, also made of steel plate, are fixedly connected to the inner walls of the fixing plates 11. The baffles 12 and fixing plates 11 effectively prevent the soft magnetic powder from overflowing from the screen 10 during screening, ensuring the orderly progress of the screening process. Fixing blocks 13 are fixedly connected to the outer walls of the fixing plates 11, and springs are fixedly connected to the outer walls of the fixing blocks 13. The outer wall of each fixed block 13 is fixedly connected to an elastic plate 14. The elastic plate 14 is made of high-quality spring steel, and its unique elastic properties can provide necessary buffering and elastic support for the screen 10 during vibration. The other end of the elastic plate 14 is fixedly connected to the outer wall of another corresponding fixed block 13, which is in turn fixedly connected to a second fixed plate 15. The second fixed plate 15 is similar in structure to the first fixed plate 11 and is also made of steel plate. The inner wall of the second fixed plate is fixedly connected to a waste bin 18. The waste bin 18 is used to collect the agglomerated soft magnetic powder and other impurities that failed to pass through the screen 10 during the screening process. The bottom of the second fixed plate 15 is slidably connected to a storage cart 17. The bottom of the second fixed plate 15 is designed with a sliding groove made of stainless steel, which matches the sliding rail on the top of the storage cart 17, realizing the smooth sliding connection of the storage cart 17.The storage cart 17 is made of durable engineering plastic, which is lightweight and corrosion-resistant, and can meet the temporary storage needs of qualified soft magnetic powder in large-scale production. A limit block 19 is fixedly connected to the inner wall of the fixing plate 15. The limit block 19 is made of rubber and has good cushioning and anti-slip properties. Its function is to limit the storage cart 17 after it slides into place, preventing it from sliding excessively and detaching from the device. A double-headed motor 20 is fixedly connected to the inner wall of the fixing plate. A rotating column 21 is fixedly connected to the output end of the double-headed motor 20. The rotating column 21 is made of alloy steel and has good comprehensive mechanical properties. A rotating shaft 22, also made of alloy steel, is fixedly connected to the rotating column 21. A rotating rod 23 is fixedly connected to the outer wall of shaft 22. The rotating rod 23 is made of stainless steel. A bracket 24 is rotatably connected to the outer wall of rotating rod 23. The bracket 24 is made of steel plate. A rotating column 25 is rotatably connected to the other end of bracket 24. The rotating column 25 is made of the same alloy steel as rotating column 21. The other end of rotating column 25 is rotatably connected to the outer wall of fixed plate 26. Fixed plate 26 is made of steel plate. The top of fixed plate 26 is fixedly connected to the bottom of fixed plate 11. Driven by double-head motor 20, rotating column 21, rotating shaft 22, rotating rod 23, bracket 24 and rotating column 25 work together to achieve efficient vibration of screen 10 and precise screening of soft magnetic powder.
[0036] Working principle: When coating the soft magnetic powder, the soft magnetic powder and coating material are first added through the feed port 3. Then, the motor 5 is turned on, and the motor 5 drives the rotating column 6 to rotate. The rotation of the rotating column 6 drives the stirring rod 7 to rotate. Then, the stirring rod 7 drives the scraper 8 to rotate on the inner wall of the coating machine, which can scrape off the soft magnetic powder adhering to the inner wall. Then, the scraper 8 drives the curved blade 9 to rotate, which mixes and stirs the soft magnetic powder and coating material in the coating machine in multiple directions. This effectively solves the problem of uneven coating of soft magnetic powder, which leads to inconsistent thickness and affects the insulation value, thereby speeding up the work efficiency.
[0037] After the coating process is completed, the discharge port 3 is opened, and the soft magnetic powder falls onto the screen 10. Then, the double-head motor 20 is turned on, which drives the rotating column 21 to rotate. The rotation of the rotating column 21 drives the rotating shaft 22 to rotate, which in turn drives the rotating rod 23 to rotate. The rotation of the rotating rod 23 then drives the support 24 to move, which in turn drives the rotating column 25 to rotate. The rotation of the rotating column 25 then drives the fixed plate 26 to move, which in turn drives the fixed plate 11 to move. The connected elastic plate 14 then achieves a vibration effect. The vibration of the fixed plate 11 drives the screen 10 to vibrate. By screening the soft magnetic powder, the unadhesive soft magnetic powder falls into the storage cart, while the clumped soft magnetic powder falls into the waste bin 18 through the vibration of the screen 10 for further processing, thus preventing clumping from affecting the subsequent performance of the product.
[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A surface coating device for producing iron-silicon-aluminum soft magnetic powder, comprising a coating machine housing (1), characterized in that: The top of the coating machine housing (1) is provided with a feed inlet (2), the bottom of the coating machine housing (1) is provided with a discharge outlet (3), the inside of the coating machine housing (1) is provided with a stirring assembly, the bottom of the coating machine housing (1) is provided with a screening assembly, and the outer wall of the coating machine housing (1) is fixedly connected with a support frame (4); the stirring assembly includes a rotating column (6) and multiple stirring rods (7), the two ends of the rotating column (6) are rotatably connected to the inside of the coating machine housing (1), the outer wall of the coating machine housing (1) is fixedly connected with a motor (5), the output end of the motor (5) is fixedly connected with the rotating column (6), the outer wall of the rotating column (6) is fixedly connected to one end of the stirring rod (7), and the other ends of the stirring rods (7) on both sides are fixedly connected with scrapers (8), and the outer wall of the scrapers (8) is fixedly connected with curved blades (9).
2. The surface coating device for producing iron-silicon-aluminum soft magnetic powder according to claim 1, characterized in that: The screening assembly includes a screen (10), which is located at the bottom of the discharge port (3), and a fixing plate (11) is fixedly connected to the outer walls on both sides of the screen (10).
3. The surface coating device for producing iron-silicon-aluminum soft magnetic powder according to claim 2, characterized in that: A baffle (12) is fixedly connected to the inner wall of the two fixing plates (11) and a fixing block (13) is fixedly connected to the outer wall of the two fixing plates (11).
4. The surface coating device for producing iron-silicon-aluminum soft magnetic powder according to claim 3, characterized in that: An elastic plate (14) is fixedly connected to the outer wall of the fixed block (13), and the other end of the elastic plate (14) is fixedly connected to the outer wall of another fixed block (13). A second fixed plate (15) is fixedly connected to the outer wall of the other fixed block (13).
5. The surface coating device for producing iron-silicon-aluminum soft magnetic powder according to claim 4, characterized in that: The outer wall of the second fixed plate (15) is fixedly connected to the second support frame (16), and the inner wall of the second fixed plate (15) is fixedly connected to the waste bin (18).
6. The surface coating device for producing iron-silicon-aluminum soft magnetic powder according to claim 5, characterized in that: The bottom of the fixed plate two (15) is slidably connected to a storage cart (17), and the inner wall of the fixed plate two (15) is fixedly connected to a limit block (19).
7. The surface coating device for producing iron-silicon-aluminum soft magnetic powder according to claim 6, characterized in that: A double-headed motor (20) is fixedly connected to the inner wall of the fixed plate. A rotating column (21) is fixedly connected to the output end of the double-headed motor (20). A rotating shaft (22) is fixedly connected to the rotating column (21). A rotating rod (23) is fixedly connected to the outer wall of the rotating shaft (22).
8. The surface coating device for producing iron-silicon-aluminum soft magnetic powder according to claim 7, characterized in that: The outer wall of the rotating rod (23) is rotatably connected to a bracket (24), the other end of the bracket (24) is rotatably connected to a rotating column three (25), the other end of the rotating column three (25) is rotatably connected to a fixing plate three (26), and the top of the fixing plate three (26) is fixedly connected to the bottom of the fixing plate one (11).