Ball milling device for soft magnetic powder material processing

Abstract

The invention discloses a ball milling device for soft magnetic powder material processing, and belongs to the technical field of ball mills, a rotary drum is movably installed on the inner side of the upper end of a fixed base, a cooling pond is installed on the lower portion of the rotary drum, and a material collector used in cooperation with the rotary drum is fixedly installed on the outer surface of one end of the fixed base; a plurality of sets of inner lining plates and arc-shaped lining plates are fixedly installed on the inner surface of the rotary drum, the inner lining plates are arranged on one sides of the arc-shaped lining plates, the outer surface of one side of each arc-shaped lining plate is of an arc-shaped structure, a filter screen is obliquely arranged on the upper portion of the interior of the material collecting device, and the outer surface of the filter screen is movably sleeved with two sets of material scraping devices; the rotary drum and the inner lining plate as well as the rotary drum and the arc-shaped lining plate are in butt joint and fixed through butt joint clamping strips; the grinding machine is provided with an auxiliary material turning structure, the grinding effect of the soft magnet material at a low rotating speed is improved, and meanwhile, the grinding machine is provided with a water-cooling structure, and the grinding effect of the soft magnet material is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of ball mills, specifically a ball milling device for processing soft magnetic powder materials. Background Technology

[0002] Ball milling equipment for processing soft magnetic powder materials is a device specifically designed for preparing high-purity, uniform soft magnetic powders. It typically employs non-ferrous grinding jars (such as those with zirconium oxide or ceramic liners) and grinding media (such as alumina balls) to avoid iron contamination and ensure stable magnetic properties of the material. This device achieves nanoscale or submicron-level particle refinement through precise control of rotational speed and grinding time. It is also equipped with a cooling system to prevent temperature rise from affecting the material's microstructure and an integrated sieving and discharge system to ensure powder flowability, meeting the high-performance requirements of soft magnetic composite materials (such as ferrites and amorphous alloys) in electronics, new energy, and other fields.

[0003] Patent document CN106040371B discloses a ball mill comprising a machine housing and a cylindrical grinding container horizontally mounted on the machine housing. The cylindrical grinding container includes a grinding container flange at each of its two ends, wherein the grinding container is mounted and / or fixed to the machine housing via the first grinding container flange. The grinding container is closed on the second grinding container flange by a grinding container cover. The machine housing of the ball mill includes an electrical interface for a sensor plug, which can be connected to the ball mill via at least one connecting wire. The first and second grinding container flanges each include at least one through-hole aligned with the electrical interface.

[0004] Existing ball milling devices have certain shortcomings in use. When grinding soft magnetic materials, in order to achieve the required fineness, the rotation speed of the ball mill is generally increased to accelerate the rotation of the grinding balls inside the drum. This method causes the temperature of the soft magnetic material to rise during high-speed friction, and excessively high rotation speed may lead to overheating or excessive deformation, affecting the magnetic domain structure. Secondly, ball milling devices use airflow to discharge powder, so a filtration structure is required to separate the powder. After long-term use, the filtration structure may become clogged, affecting the stability of the discharge. In summary, in the prior art, the temperature of soft magnetic materials rises during high-speed friction, and excessively high rotational speeds may lead to overheating or excessive deformation, affecting the magnetic domain structure. Summary of the Invention

[0005] This invention provides a ball milling apparatus for processing soft magnetic powder materials, which can solve the problem in the prior art that the temperature of soft magnetic materials rises during high-speed friction, and that excessively high rotation speed may lead to overheating or excessive deformation, affecting the magnetic domain structure. A ball milling device for processing soft magnetic powder materials, wherein a rotating drum is movably mounted on the upper inner side of a fixed base, a cooling pool is installed at the lower part of the rotating drum, a material receiver for use with the rotating drum is fixedly mounted on the outer surface of one end of the fixed base, several sets of inner lining plates and arc-shaped lining plates are fixedly mounted on the inner surface of the rotating drum, the inner lining plates are arranged on one side of the arc-shaped lining plates, and the outer surface of one side of the arc-shaped lining plates has an arc-shaped structure. A filter screen is inclinedly arranged at the upper part of the inside of the material receiver, and two sets of scrapers are movably sleeved on the outer surface of the filter screen.

[0006] As a further technical solution of the present invention, the rotating drum and the inner liner plate, as well as the rotating drum and the arc-shaped liner plate, are all fixed together by a docking clip. The inner side of the rotating drum is provided with a slot for use with the docking clip. By utilizing the arc-shaped structure on the surface of the arc-shaped liner plate, the tumbling effect of the grinding ball in the rotating drum can be improved when the rotating drum rotates.

[0007] As a further technical solution of the present invention, a number of anti-wave plates are fixedly installed on the inner side of the cooling pool, and the lower part of the rotating drum is placed inside the cooling pool. The liquid in the cooling pool can cool the soft magnetic material inside the rotating drum when the drum rotates, so as to avoid the material from overheating or excessive deformation, which would affect the magnetic domain structure. The anti-wave plates can reduce the sloshing amplitude of the liquid in the cooling pool and prevent the liquid from being carried out of the cooling pool.

[0008] As a further technical solution of the present invention, the upper end of the fixed base is provided with several sets of limiting seats on both sides of the rotating cylinder, and a positioning wheel is movably installed at one end of the limiting seat. The positioning wheel contacts the surface of the rotating cylinder, thereby improving the stability of the rotating cylinder when it rotates.

[0009] As a further technical solution of the present invention, a storage box is installed at the lower part of the inside of the receiving device, and an exhaust groove is provided on one side of the receiving device. The ball milling device uses the wind force generated when the fan is running to blow the ground soft magnetic material out from one end of the rotating drum. The soft magnetic material is filtered and separated by the setting of the filter screen, so that the soft magnetic material is discharged downward into the inside of the storage box for collection.

[0010] As a further technical solution of the present invention, an upper rotating rod is movably installed at one end of the filter screen, and a lower rotating rod is movably installed at the other end of the filter screen. By rotating the upper and lower rotating rods, the filter screen can be moved, causing the filter screen to be rolled up or released on the surface of the upper or lower rotating rod. In conjunction with the use of a scraper, the cleaning operation of the filter screen is completed.

[0011] As a further technical solution of the present invention, the scraper includes a fixed bracket and an inclined scraper. The inclined scraper is fixedly installed on one side of the fixed bracket in an inclined shape, and the filter screen passes between the inclined scraper and the fixed bracket.

[0012] As a further technical solution of the present invention, a roller brush is movably installed at one end of the fixed card seat, and a brush strip is fixedly installed on the outer surface of one end of the inclined scraper. With the roller brush, the soft magnetic material blocked in the mesh can be pushed out from the outside of the filter screen when the filter screen moves, so that the filter screen remains unobstructed. The brush strip can clean the inside of the filter screen when it moves, and together with the inclined scraper, the soft magnetic material is discharged downward.

[0013] As a further technical solution of the present invention, a feeding hopper is installed at one end of the rotating drum, and a fan is provided at the lower part of the feeding hopper. The fan and the feeding end of the rotating drum are connected in a continuous manner. The soft magnetic material can be introduced into the interior of the rotating drum through the feeding end using the feeding hopper, while the fan performs airflow discharge operation on the rotating drum through the feeding end.

[0014] As a further technical solution of the present invention, the fixed base is equipped with an electric motor for use with the rotating drum, and the rotating drum is equipped with grinding balls. Several sets of grinding balls are of different sizes. The electric motor drives the rotating drum to rotate using a gear structure, so that the grinding balls of different sizes flip inside the rotating drum to grind the soft magnetic material.

[0015] The beneficial effects of this invention are as follows: By setting up an arc-shaped liner and a cooling pool, this invention provides an auxiliary material turning structure for the ball mill device used for processing soft magnetic powder materials, improving the grinding effect of soft magnetic materials at low speeds. Simultaneously, it provides a water-cooling structure. During operation, the soft magnetic material is introduced into the interior of the rotating drum through the feed hopper. The motor drives the rotating drum to rotate using a gear structure, causing grinding balls of different sizes to turn inside the drum. The arc-shaped structure on the surface of the arc-shaped liner enhances the turning effect of the grinding balls within the rotating drum, causing them to quickly turn downwards when the arc-shaped liner contacts the grinding balls, increasing the number of contacts between the grinding balls and the soft magnetic material for grinding. Simultaneously, a fan discharges the material through the feed end of the rotating drum. The liquid in the cooling pool cools the soft magnetic material inside the rotating drum during rotation, preventing overheating or excessive deformation that could affect the magnetic domain structure. The anti-sloshing plate reduces the sloshing amplitude of the liquid within the cooling pool, preventing liquid from being carried out of the cooling pool. By incorporating a receiver, the ball mill for processing soft magnetic powder materials features a continuous discharge structure, enhancing its discharge stability. During operation, the ball mill utilizes the airflow generated by the fan to blow the ground soft magnetic material outward from one end of the rotating drum. A filter screen separates the soft magnetic material, allowing it to flow downward into the storage bin for collection. The upper and lower rotating rods are independently driven by motors. Their rotation moves the filter screen, causing it to roll up or unroll on the surface of the rods, allowing it to pass through the scraper. A roller brush pushes out the soft magnetic material blocking the mesh as the filter moves, ensuring its unobstructed flow. Brush strips clean the inside of the filter as it moves, and the inclined scraper further facilitates downward discharge of the soft magnetic material. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a planar structural diagram of the rotating cylinder in this invention; Figure 3 This is an overall structural diagram of the arc-shaped liner in this invention; Figure 4 This is a diagram of the internal structure of the rotating cylinder in this invention; Figure 5 This is an overall structural diagram of the scraper in this invention.

[0018] In the diagram: 1. Fixed base; 2. Rotary drum; 3. Collector; 4. Feed hopper; 5. Motor; 6. Limiting seat; 7. Storage box; 8. Inner liner; 9. Arc-shaped liner; 10. Cooling pool; 11. Baffle plate; 12. Positioning wheel; 13. Connecting clip; 14. Upper rotating rod; 15. Lower rotating rod; 16. Scraper; 17. Filter screen; 18. Fixed bracket; 19. Inclined scraper; 20. Brush strip; 21. Roller brush; 22. Grinding ball; 23. Fan. Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1-5As shown, a ball milling device for processing soft magnetic powder materials includes a fixed base 1 and a rotating drum 2. The rotating drum 2 is movably installed on the inner side of the upper end of the fixed base 1. A cooling pool 10 is installed on the lower part of the rotating drum 2. A material collector 3 for use with the rotating drum 2 is fixedly installed on the outer surface of one end of the fixed base 1. Several sets of inner liner plates 8 and arc-shaped liners 9 are fixedly installed on the inner surface of the rotating drum 2. The inner liner plates 8 are located on one side of the arc-shaped liners 9. The outer surface of one side of the arc-shaped liners 9 has an arc-shaped structure. A filter screen 17 is inclinedly arranged at the upper part of the inside of the material collector 3. Two sets of scrapers 16 are movably sleeved on the outer surface of the filter screen 17.

[0021] The rotating drum 2 and the inner liner plate 8, as well as the rotating drum 2 and the arc-shaped liner plate 9, are all fixed together by the docking strip 13. The inner side of the rotating drum 2 is provided with a slot for use with the docking strip 13. By utilizing the arc-shaped structure on the surface of the arc-shaped liner plate 9, the tumbling effect of the grinding ball 22 on the rotating drum 2 can be improved when the rotating drum 2 rotates.

[0022] Several sets of anti-wave plates 11 are fixedly installed on the inner side of the cooling pool 10. The lower part of the rotating cylinder 2 is placed inside the cooling pool 10. The liquid in the cooling pool 10 can cool the soft magnetic material in the rotating cylinder 2 when the rotating cylinder 2 rotates, so as to avoid the material from overheating or excessive deformation, which would affect the magnetic domain structure. The anti-wave plates 11 can reduce the sloshing amplitude of the liquid in the cooling pool 10 and prevent the liquid from being carried out of the cooling pool 10.

[0023] The upper end of the fixed base 1 is provided with several sets of limiting seats 6 on both sides of the rotating drum 2, and a positioning wheel 12 is movably installed at one end of the limiting seat 6. The positioning wheel 12 contacts the surface of the rotating drum 2, thereby improving the stability of the rotating drum 2 when it rotates.

[0024] The material receiving device 3 has a storage box 7 installed at the bottom inside. The material receiving device 3 has an exhaust groove on one side. The ball mill uses the wind generated by the blower 23 to blow the ground soft magnetic material out from one end of the rotating drum 2. The soft magnetic material is filtered and separated by the filter screen 17, so that the soft magnetic material is discharged downward into the storage box 7 for collection.

[0025] The filter screen 17 has an upper rotating rod 14 movably mounted on one end and a lower rotating rod 15 movably mounted on the other end. By rotating the upper rotating rod 14 and the lower rotating rod 15, the filter screen 17 can be moved, causing the filter screen 17 to be rolled up or released on the surface of the upper rotating rod 14 or the lower rotating rod 15. With the use of the scraper 16, the cleaning operation of the filter screen 17 can be completed.

[0026] The scraper 16 includes a fixed bracket 18 and an inclined scraper 19. The inclined scraper 19 is fixedly installed on one side of the fixed bracket 18 in an inclined shape, and the filter screen 17 passes between the inclined scraper 19 and the fixed bracket 18.

[0027] A roller brush 21 is movably mounted on one end of the fixed bracket 18, and a brush strip 20 is fixedly mounted on the outer surface of one end of the inclined scraper 19. With the roller brush 21, the soft magnetic material blocked in the mesh can be pushed out from the outside of the filter screen 17 when the filter screen 17 moves, so that the filter screen 17 remains unobstructed. The brush strip 20 can clean the inside of the filter screen 17 when it moves, and together with the inclined scraper 19, the soft magnetic material is discharged downward.

[0028] A feed hopper 4 is installed at one end of the rotating drum 2. A fan 23 is provided at the lower part of the feed hopper 4. The fan 23 and the feed end of the rotating drum 2 are connected through the feed hopper 4. The soft magnetic material can be introduced into the interior of the rotating drum 2 through the feed end. At the same time, the fan 23 performs airflow discharge operation on the rotating drum 2 through the feed end.

[0029] The fixed base 1 is equipped with a motor 5 that works with the rotating drum 2. The rotating drum 2 is equipped with grinding balls 22. Several sets of grinding balls 22 are of different sizes. The motor 5 drives the rotating drum 2 to rotate using a gear structure, so that the grinding balls 22 of different sizes flip inside the rotating drum 2 to grind the soft magnetic material.

[0030] A ball milling device for processing soft magnetic powder materials, in use, by setting up an arc-shaped liner 9 and a cooling pool 10, provides an auxiliary material turning structure to improve the grinding effect of soft magnetic materials at low speeds. It also features a water-cooling structure. During operation, the soft magnetic material is introduced into the interior of the rotating drum 2 through the feed hopper 4. The motor 5 drives the rotating drum 2 to rotate using a gear structure, causing grinding balls 22 of different sizes to turn inside the drum 2. The arc-shaped structure on the surface of the arc-shaped liner 9 helps to improve the grinding effect of the soft magnetic material at low speeds by using the rotating drum 2. The rotation effect of the grinding ball 22 on the rotating drum 2 causes the grinding ball 22 to quickly rotate downward when the arc-shaped liner 9 comes into contact with the grinding ball 22, increasing the number of times the grinding ball 22 contacts the soft magnetic material and grinding the soft magnetic material. At the same time, the fan 23 performs airflow discharge operation on the rotating drum 2 through the feed end. The liquid in the cooling pool 10 can be used to cool the soft magnetic material in the rotating drum 2 when the rotating drum 2 is rotating, avoiding overheating or excessive deformation of the material, which would affect the magnetic domain structure. The anti-wave plate 11 can reduce the sloshing amplitude of the liquid in the cooling pool 10 and prevent the liquid from being carried out of the cooling pool 10. By setting up the receiver 3, the ball mill for processing soft magnetic powder materials has a continuous discharge structure, improving its discharge stability. During operation, the ball mill uses the air force generated by the blower 23 to blow the ground soft magnetic material out from one end of the rotating drum 2. The filter screen 17 filters and separates the soft magnetic material, allowing it to be discharged downwards into the storage bin 7 for collection. The upper rotating rod 14 and the lower rotating rod 15 are independently driven by motors. The rotation of rod 15 can drive the filter screen 17 to move, causing the filter screen 17 to be rolled up or released on the surface of the upper rotating rod 14 or the lower rotating rod 15, so that the filter screen 17 passes through the scraper 16. With the setting of the roller brush 21, the soft magnetic material blocked in the mesh can be pushed out from the outside of the filter screen 17 when the filter screen 17 moves, so that the filter screen 17 remains unobstructed. The setting of the brush strip 20 can clean the inside of the filter screen 17 when it moves. Together with the setting of the inclined scraper 19, the soft magnetic material is discharged downward.

[0031] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A ball milling apparatus for processing soft magnetic powder materials, characterized in that, The device includes a fixed base (1) and a rotating drum (2). The rotating drum (2) is movably installed on the inner side of the upper end of the fixed base (1). A cooling pool (10) is installed on the lower part of the rotating drum (2). A material collector (3) for use with the rotating drum (2) is fixedly installed on the outer surface of one end of the fixed base (1). Several sets of inner lining plates (8) and arc-shaped lining plates (9) are fixedly installed on the inner surface of the rotating drum (2). The inner lining plate (8) is set on one side of the arc-shaped lining plate (9). The outer surface of one side of the arc-shaped lining plate (9) is arc-shaped. A filter screen (17) is inclinedly arranged at the upper part of the inside of the material collector (3). Two sets of scrapers (16) are movably sleeved on the outer surface of the filter screen (17).

2. The ball milling apparatus for processing soft magnetic powder materials according to claim 1, characterized in that, The rotating cylinder (2) and the inner lining plate (8), as well as the rotating cylinder (2) and the arc-shaped lining plate (9), are all fixed together by a docking strip (13). The inner side of the rotating cylinder (2) is provided with a slot for use with the docking strip (13).

3. The ball milling apparatus for processing soft magnetic powder materials according to claim 2, characterized in that, Several sets of anti-wave plates (11) are fixedly installed on the inner side of the cooling pool (10), and the lower part of the rotating drum (2) is placed on the inner side of the cooling pool (10).

4. The ball milling apparatus for processing soft magnetic powder materials according to claim 1, characterized in that, The upper end of the fixed base (1) is provided with several sets of limiting seats (6) on both sides of the rotating cylinder (2), and a positioning wheel (12) is movably installed at one end of the limiting seat (6).

5. The ball milling apparatus for processing soft magnetic powder materials according to claim 1, characterized in that, A storage box (7) is installed at the lower part of the inside of the receiving device (3), and an exhaust groove is provided on one side of the receiving device (3).

6. The ball milling apparatus for processing soft magnetic powder materials according to claim 5, characterized in that, One end of the filter (17) is movably mounted with an upper rotating rod (14), and the other end of the filter (17) is movably mounted with a lower rotating rod (15).

7. A ball milling apparatus for processing soft magnetic powder materials according to claim 6, characterized in that, The scraper (16) includes a fixed bracket (18) and an inclined scraper (19). The inclined scraper (19) is fixedly installed on one side of the fixed bracket (18) in an inclined shape, and the filter screen (17) passes between the inclined scraper (19) and the fixed bracket (18).

8. The ball milling apparatus for processing soft magnetic powder materials according to claim 7, characterized in that, A roller brush (21) is movably installed at one end of the fixed bracket (18), and a brush strip (20) is fixedly installed on the outer surface of one end of the inclined scraper (19).

9. A ball milling apparatus for processing soft magnetic powder materials according to claim 7, characterized in that, A feed hopper (4) is installed at one end of the rotating drum (2), and a fan (23) is provided at the lower part of the feed hopper (4). The fan (23) and the feed end of the rotating drum (2) are connected in a continuous manner.

10. A ball milling apparatus for processing soft magnetic powder materials according to claim 1, characterized in that, The fixed base (1) is equipped with an electric motor (5) for use with the rotating drum (2), and the rotating drum (2) is equipped with a grinding ball (22).

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