A ball milling device for preparing intermediate alloy

Abstract

The present application relates to the technical field of ball milling devices, and discloses a ball milling device for preparing intermediate alloys, including a ball milling tube, wherein an impurity discharge zone is arranged in the middle of the ball milling tube, a coarse grinding unit is slidably connected to one side of the ball milling tube, and a fine grinding unit is arranged on the other side, when the coarse grinding unit is connected to the fine grinding unit, the impurity discharge zone is isolated from the two, and when the coarse grinding unit is separated from the fine grinding unit, the impurity discharge zone is connected to the two, the coarse grinding unit is used for coarse grinding of the intermediate alloy, a feed port is provided on the side away from the impurity discharge zone, and is rotatably connected to the upper part of a support seat, and the fine grinding unit is used for fine grinding of the intermediate alloy. By setting the hemispherical protrusion 1 in the coarse grinding unit and the hemispherical protrusion 2 in the fine grinding unit, the probability of irregular movement of the material and the medium is increased, so that the probability of the medium and the material meeting during the movement is increased, thereby increasing the probability of the two colliding with each other.

Description

Technical Field

[0001] The invention relates to the technical field of ball milling devices, in particular to a ball milling device for preparing intermediate alloys. Background Art

[0002] In modern industrial production, master alloys are an important additive and are widely used in many fields such as metallurgy, electronics, aerospace, etc. Their quality is directly related to the performance of the final product. In the preparation process of master alloys, ball milling is an extremely critical pre-step. Its core purpose is to fully and evenly mix a variety of raw materials with different characteristics, such as metal powders, alloy particles and various additives, and at the same time, with the impact and friction of the grinding medium, effectively refine the raw material particles, thereby improving the microstructure uniformity, chemical composition stability and physical performance reliability of the master alloy.

[0003] However, the traditional ball milling treatment devices widely used in the market have exposed many problems that need to be solved in the actual application process. From the perspective of mixing effect, the internal structure of most traditional ball mills is relatively simple, and the shape and layout of the stirring parts lack scientificity, resulting in a single flow pattern of materials during the ball milling process, making it difficult to form a full-scale, multi-angle mixing flow field. This makes the composition of the intermediate alloy unevenly distributed on a microscopic scale, seriously affecting the consistency and stability of product performance. For example, in the field of high-end electronic device manufacturing, the uniformity of the composition of the intermediate alloy is extremely high. Even a very small deviation in the composition may cause performance fluctuations of electronic components and affect the yield and reliability of the product. In terms of cleaning and maintenance, traditional ball milling devices also face severe challenges. The internal structure of the device is complex, with many hard-to-reach corners and gaps, and it is difficult for cleaning tools to thoroughly clean it. After long-term use, residual material impurities will accumulate inside the device, which will not only affect the purity of subsequent products, but may also trigger chemical reactions and damage the equipment. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a ball milling device for preparing an intermediate alloy, which solves the problems existing in the traditional ball milling device.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a ball milling device for preparing an intermediate alloy, comprising a ball mill, an impurity discharge zone is arranged in the middle of the ball mill, a coarse grinding unit is slidably connected to one side of the ball mill, and a fine grinding unit is arranged on the other side, when the coarse grinding unit is connected to the fine grinding unit, the impurity discharge zone is isolated from the two, and when the coarse grinding unit is separated from the fine grinding unit, the impurity discharge zone is connected to the two, the coarse grinding unit is used to perform coarse grinding on the intermediate alloy, a feed port is provided on the side away from the impurity discharge zone, and the unit is rotatably connected to the upper part of a support seat, the fine grinding unit is used to perform fine grinding on the intermediate alloy, a discharge port is provided on the side away from the impurity discharge zone, and the unit is rotatably connected to the upper part of a support seat, a gear one is fixedly connected to the outer wall of the ball mill near the discharge port, and the gear one is driven to rotate by a reduction mechanism, a base is provided below the ball mill, and a separation mechanism is provided in the base for driving the separation and connection of the coarse grinding unit and the fine grinding unit.

[0006] Preferably, the coarse grinding unit comprises a coarse grinding cylinder, the outer wall of which is embedded in and slidably connected to the inner wall of the ball grinding cylinder, a plurality of irregularly distributed hemispherical protrusions are fixedly connected to the inner wall of the coarse grinding cylinder, and a plurality of coarse grinding media are arranged in the coarse grinding cylinder.

[0007] Preferably, a baffle plate 1 is fixedly connected to one side of the coarse grinding cylinder close to the impurity discharge area, and a plurality of through holes 1 evenly distributed around the center of the baffle plate 1 are formed on the plate body of the baffle plate 1.

[0008] Preferably, the fine grinding unit includes a fine grinding cylinder, the outer wall of the fine grinding cylinder is embedded and slidably connected to the inner wall of the ball grinding cylinder, the inner wall of the fine grinding cylinder is fixedly connected with a plurality of irregularly distributed hemispherical protrusions 2, the particle size of the hemispherical protrusions 2 is smaller than the particle size of the hemispherical protrusions 1, and a plurality of fine grinding media are arranged in the fine grinding cylinder.

[0009] Preferably, a baffle plate 2 is fixedly connected to one side of the fine grinding cylinder close to the impurity discharge area, and a plurality of through holes 2 evenly distributed around the center of the baffle plate 2 are formed on the plate body of the baffle plate 2.

[0010] Preferably, the outer walls of baffle plate 2 and baffle plate 1 are both provided with sealing rings, and when baffle plate 1 and baffle plate 2 are in contact with each other and connected, the two sealing rings are squeezed against each other to form a sealing structure.

[0011] Preferably, the deceleration mechanism includes a reducer, the input end of the reducer is fixedly connected to the output end of the servo motor, the output end of the reducer is fixedly connected to gear 2, the tooth end of gear 2 is meshingly connected to the tooth end of gear 1, and the bottom wall of the reducer and the bottom wall of the servo motor are both fixedly connected to the upper surface of the base.

[0012] Preferably, the separation mechanism includes a slide groove 1, which is opened on the upper part of the base and located below the coarse grinding cylinder. The bottom of the support seat 1 is embedded in and slidably connected to the slide groove 1. A screw rod 1 is rotatably connected in the slide groove 1. The threaded portion of the screw rod 1 passes through and is threadedly connected to the lower part of the support seat. A motor 1 is fixedly connected to the side wall of the base, and the output end of the motor 1 is fixedly connected to one end of the screw rod 1.

[0013] Preferably, the separation mechanism includes a second slide groove, which is opened on the upper part of the base and located below the fine grinding cylinder. The bottom of the second support seat is embedded in and slidably connected to the second slide groove. A second screw rod is rotatably connected in the second slide groove. The threaded portion of the second screw rod passes through and is threadedly connected to the lower part of the second support seat. A second motor is fixedly connected to the side wall of the base, and the output end of the second motor is fixedly connected to one end of the second screw rod.

[0014] Preferably, a sewage drain groove is provided in the middle of the base, a top wheel is rotatably connected in the sewage drain groove, and an outer wall of the top wheel is nested and connected with an outer wall of the impurity discharge area.

[0015] The present invention provides a ball milling device for preparing a master alloy. The device has the following beneficial effects:

[0016] The present invention cooperates with the coarse grinding unit and the fine grinding unit, so that when the intermediate alloy is subjected to ball milling, the coarse grinding unit is first used to coarsely grind the intermediate alloy, and then the fine grinding unit is used to finely grind the intermediate alloy, thereby improving the efficiency of ball milling on the one hand and improving the final uniformity of the intermediate alloy on the other hand. At the same time, through the arrangement of the hemispherical protrusion 1 in the coarse grinding unit and the hemispherical protrusion 2 in the fine grinding unit, the material and the medium continuously collide with the hemispherical protrusion 1 and the hemispherical protrusion 2 during the movement in the device, and the movement trajectory is changed, thereby increasing the probability of irregular movement of the material and the medium, increasing the probability of the medium and the material meeting during the movement, thereby increasing the probability of collision between the two, and the effectiveness of multi-angle collision, further improving the ball milling efficiency. Through the cooperation of the coarse grinding unit, the fine grinding unit, the ball mill barrel, the impurity discharge area and the separation mechanism, the coarse grinding unit and the fine grinding unit are separated and connected, and then in the subsequent cleaning process, the impurities inside the device can be quickly flushed and discharged by water through the separation of the coarse grinding unit and the fine grinding unit, thereby improving the cleaning efficiency. At the same time, through the setting of baffle 1 and baffle 2, the fine grinding cylinder or the coarse grinding cylinder can be pulled out and rotated separately, so that the overlapping position of through hole 1 and through hole 2 is changed, thereby achieving the effect of changing the particle size of the material entering the fine grinding cylinder to meet the needs of ball milling treatment of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a ball milling device for preparing a master alloy according to the present invention;

[0018] Figure 2 A schematic diagram of another form of a ball milling device for preparing a master alloy according to the present invention;

[0019] Figure 3 It is a front view schematic diagram of the ball mill in the present invention;

[0020] Figure 4 It is a schematic diagram of the local structure of the ball mill in the present invention;

[0021] Figure 5 It is a three-dimensional schematic diagram of the ball mill in the present invention;

[0022] Figure 6 It is a schematic diagram of the internal structure of the fine grinding cylinder in the present invention;

[0023] Figure 7 Schematic diagram of the internal structure of the coarse grinding cylinder in the present invention.

[0024] Among them, 1. ball mill; 2. impurity discharge area; 3. coarse grinding unit; 301. feed port; 302. coarse grinding cylinder; 303. hemispherical protrusion one; 304. baffle one; 305. through hole one; 4. fine grinding unit; 401. discharge port; 402. fine grinding cylinder; 403. hemispherical protrusion two; 404. baffle two; 405. through hole two; 5. support seat one; 6. support seat two; 7. gear one; 8. base; 9. sealing ring; 10. reducer; 11. servo motor; 12. gear two; 13. slide slot one; 14. screw rod one; 15. motor one; 16. slide slot two; 17. screw rod two; 18. motor two; 19. drain chute; 20. top wheel. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Please refer to the attached Figure 1 -Attached Figure 7The embodiment of the present invention provides a ball milling device for preparing an intermediate alloy, comprising a ball mill 1, an impurity discharge zone 2 is arranged in the middle of the ball mill 1, a coarse grinding unit 3 is slidably connected to one side of the ball mill 1, and a fine grinding unit 4 is arranged on the other side. When the coarse grinding unit 3 is connected to the fine grinding unit 4, the impurity discharge zone 2 is isolated from the two. When the coarse grinding unit 3 is separated from the fine grinding unit 4, the impurity discharge zone 2 is connected to the two. The coarse grinding unit 3 is used for coarse grinding of the intermediate alloy, and is far away from the impurity discharge zone 2. A feed port 301 is provided on one side and is rotatably connected to the upper part of the support seat 5. The fine grinding unit 4 is used for fine grinding the intermediate alloy. A discharge port 401 is provided on the side away from the impurity discharge area 2 and is rotatably connected to the upper part of the support seat 6. A gear 7 is fixedly connected to the outer wall of the ball mill 1 near the discharge port 401, and the gear 7 is driven to rotate through a reduction mechanism. A base 8 is provided under the ball mill 1, and a separation mechanism is provided in the base 8 for driving the separation and connection of the coarse grinding unit 3 and the fine grinding unit 4.

[0027] The ball mill 1 and the impurity discharge area 2 together form an external cylinder, which not only provides a stable operating space for the internal coarse grinding unit 3 and fine grinding unit 4, but also ensures the sealing and mechanical strength of the device in terms of the overall structure. The coarse grinding unit 3 and the fine grinding unit 4 are respectively embedded and slidably connected to the inside of the two sides of the ball mill 1, and the outer wall of the coarse grinding unit 3, the outer wall of the fine grinding unit 4 and the inner wall of the ball mill 1 are nested structures. This nested design, on the one hand, allows the coarse grinding unit 3 and the fine grinding unit 4 to slide flexibly along the axial direction in the ball mill 1 to achieve the functions of separation and connection; on the other hand, in the circumferential direction, the coarse grinding unit 3, the fine grinding unit 4 and the ball mill 1 are mutually embedded and fixed, so that when the ball mill 1 rotates under the drive of the reduction mechanism, it can synchronously drive the coarse grinding unit 3 and the fine grinding unit 4 to perform circular motion, thereby achieving efficient grinding of the intermediate alloy. In addition, in order to meet specific operating requirements, when the coarse grinding unit 3 or the fine grinding unit 4 does not need to move along the axial direction, they can be fixedly connected to the ball mill 1 by bolts to further enhance the stability of the device under specific working conditions.

[0028] The impurity discharge area 2 is used to discharge impurities when cleaning the ball milling treatment device, that is, the impurities after rinsing are mixed with water and enter the impurity discharge area 2, and are discharged from the discharge port opened on the impurity discharge area 2. After the ball milling operation is completed, the device needs to be cleaned to ensure the preparation quality of the next batch of intermediate alloys. At this time, by injecting cleaning water into the device, the impurities after rinsing are mixed with water to form sewage, and these sewage will flow into the impurity discharge area 2. The discharge port pre-opened on the impurity discharge area 2 can quickly discharge the sewage from the device, effectively avoiding the influence of impurity residues on subsequent ball milling operations. In order to further optimize the sewage discharge efficiency of the impurity discharge area 2, a filter can be set at the discharge port to preliminarily filter the discharged sewage to prevent larger particles of impurities from clogging the drainage pipe. At the same time, the inner surface of the impurity discharge area 2 can be coated with a smooth corrosion-resistant material to reduce the adhesion of impurities on its inner wall and improve the cleaning effect.

[0029] In the ball milling process, when the coarse grinding unit 3 and the fine grinding unit 4 are connected to each other, the impurity discharge area 2 can be perfectly isolated from the two, ensuring that the ball milling process is carried out in a pure and undisturbed environment; and when cleaning and maintenance are required, the coarse grinding unit 3 and the fine grinding unit 4 are separated from each other under the drive of the separation mechanism, and the impurity discharge area 2 is then connected to the two, opening up a convenient channel for efficient cleaning.

[0030] Through the cooperation of the coarse grinding unit 3 and the fine grinding unit 4, when the intermediate alloy is ball-milled, the coarse grinding unit 3 is used to coarsely grind the intermediate alloy first, and then the fine grinding unit 4 is used to finely grind the intermediate alloy, thereby improving the efficiency of the ball milling process on the one hand, and improving the final uniformity of the intermediate alloy on the other hand. At the same time, through the cooperation of the coarse grinding unit 3, the fine grinding unit 4, the ball mill 1, the impurity discharge area 2 and the separation mechanism, the coarse grinding unit 3 and the fine grinding unit 4 can be separated and connected, and then in the subsequent cleaning process, through the separation of the coarse grinding unit 3 and the fine grinding unit 4, the impurities inside the device can be quickly washed out by water, thereby improving the cleaning efficiency.

[0031] The coarse grinding unit 3 includes a coarse grinding cylinder 302, the outer wall of which is embedded and slidably connected to the inner wall of the ball mill 1, a plurality of irregularly distributed hemispherical protrusions 1 303 are fixedly connected to the inner wall of the coarse grinding cylinder 302, and a plurality of coarse grinding media are arranged in the coarse grinding cylinder 302. The fine grinding unit 4 includes a fine grinding cylinder 402, the outer wall of which is embedded and slidably connected to the inner wall of the ball mill 1, a plurality of irregularly distributed hemispherical protrusions 2 403 are fixedly connected to the inner wall of the fine grinding cylinder 402, the particle size of the hemispherical protrusions 2 403 is smaller than the particle size of the hemispherical protrusions 1 303, and a plurality of fine grinding media are arranged in the fine grinding cylinder 402.

[0032] By setting the hemispherical protrusion 1 303 in the coarse grinding unit 3 and the hemispherical protrusion 2 403 in the fine grinding unit 4, the material and the medium will continuously collide with the hemispherical protrusion 1 303 and the hemispherical protrusion 2 403 during the movement in the device, and the movement trajectory will be changed, thereby increasing the probability of irregular movement of the material and the medium, and increasing the probability of the medium and the material meeting during the movement, thereby increasing the probability of the two colliding with each other, and at the same time, it is beneficial to the effectiveness of multi-angle collision, and further improves the ball milling efficiency.

[0033] The present application sets the hemispherical bump 1 303 and the hemispherical bump 2 403 to a hemispherical shape. Of course, the hemispherical bump 1 303 and the hemispherical bump 2 403 can also be set to different shapes such as a cylinder. However, although the hemispherical bump 1 303 and the hemispherical bump 2 403 also play a certain grinding role when they collide with the medium and the material, this is not the main factor. Its main function is to continuously collide with the medium and the material, so that the movement trajectory of the medium and the material is constantly changing irregularly. Each collision will change the movement trajectory of the material and the medium, making its movement more complicated and disordered. This irregular movement greatly increases the probability of the material and the medium meeting during the movement process, thereby significantly increasing the frequency of collision between the two and greatly improving the ball milling efficiency. Therefore, in order to improve the service life of the hemispherical bump 1 303 and the hemispherical bump 2 403, they are set to a hemispherical shape, so that when the medium and the material collide with them, most of the impact force slides along the spherical surface and changes direction, which not only has the effect of changing the movement trajectory of the medium and the material, but also greatly reduces the direct impact force of the hemispherical bump 1 303 and the hemispherical bump 2 403. At the same time, compared with other shapes, the hemispherical shape has the smallest kinetic energy loss for the medium and the material, and can maximize the kinetic energy of the medium and the material, thereby improving the ball milling efficiency. In order to further enhance the wear resistance and service life of the hemispherical bump 1 303 and the hemispherical bump 2 403, a special coating treatment technology can be used on their surface. For example, a layer of coating with high hardness and good wear resistance, such as titanium nitride (TiN) coating or tungsten carbide (WC) coating, is deposited on the surface of the hemispherical bump through chemical vapor deposition (CVD) or physical vapor deposition (PVD) technology to further improve its wear resistance and reduce wear and damage caused by long-term use.

[0034] At the same time, in order to further optimize the rough grinding effect, the material, size and filling ratio of the rough grinding medium can be adjusted according to the characteristics of different master alloy raw materials. For example, for raw materials with higher hardness, a rough grinding medium with greater hardness can be selected to enhance the grinding effect; for raw materials with greater viscosity, the filling ratio of the rough grinding medium can be appropriately increased to increase the contact probability between the material and the medium.

[0035] In order to further improve the fine grinding efficiency, a temperature control system can be set inside the fine grinding cylinder 402. By accurately controlling the temperature during the fine grinding process, the physical properties of the material can be optimized, and its hardness or viscosity can be reduced, thereby improving the grinding effect. For example, for some intermediate alloy raw materials with better plasticity at a specific temperature, the fine grinding cylinder 402 can be heated to perform fine grinding under a suitable temperature environment, thereby significantly improving the grinding efficiency and product quality.

[0036] The coarse grinding cylinder 302 is fixedly connected to a baffle plate 1 304 on the side close to the impurity discharge area 2, and a plurality of through holes 1 305 evenly distributed around the center of the circle are formed on the plate body of the baffle plate 1 304. The fine grinding cylinder 402 is fixedly connected to a baffle plate 2 404 on the side close to the impurity discharge area 2, and a plurality of through holes 2 405 evenly distributed around the center of the circle are formed on the plate body of the baffle plate 2 404.

[0037] For example, when a material with a finer particle size needs to enter the fine grinding cylinder 402, the rotation angle of the coarse grinding cylinder 302 or the fine grinding cylinder 402 can be adjusted to reduce the aperture of the overlapping portion of the through hole 1 305 and the through hole 2 405, thereby limiting the material with a larger particle size from entering the fine grinding cylinder 402; conversely, when a material with a larger particle size needs to enter the fine grinding cylinder 402, the aperture of the overlapping portion can be increased by adjusting the rotation angle. In addition, in order to further improve the convenience and accuracy of operation, angle scale marks can be set on the coarse grinding cylinder 302 and the fine grinding cylinder 402, and the operator can directly adjust the rotation angle of the coarse grinding cylinder 302 or the fine grinding cylinder 402 according to the scale marks according to the required material particle size, thereby realizing rapid and accurate control of the material particle size.

[0038] By setting baffle 1 304 and baffle 2 404, the coarse grinding cylinder 302 or the fine grinding cylinder 402 can be pulled out and rotated separately, so that the overlapping position of through hole 1 305 and through hole 2 405 is changed, thereby achieving the effect of changing the particle size of the material entering the fine grinding cylinder 402 to meet the needs of ball milling treatment of different specifications.

[0039] Of course, the baffle plate 1 304 can also be rotatably connected to the rough grinding cylinder 302, and the baffle plate 2 404 can be fixedly connected to the fine grinding cylinder 402; or the baffle plate 2 404 can be rotatably connected to the fine grinding cylinder 402, and the baffle plate 1 304 can be fixedly connected to the rough grinding cylinder 302; or even the baffle plate 1 304 can be rotatably connected to the rough grinding cylinder 302, and the baffle plate 2 404 can be rotatably connected to the fine grinding cylinder 402; in the above scheme, the baffle plate 1 304 and the rough grinding cylinder 302, the baffle plate 2 404 and the fine grinding cylinder 402 are all provided with corresponding clamping structures, when it is necessary to adjust the particle size of the material entering the fine grinding cylinder 402, the clamping structure is opened, and the baffle plate 1 304 or the baffle plate 2 404 is rotated, so that the overlapping position of the through hole 1 305 and the through hole 2 405 can be changed. In order to further improve the reliability of the clamping structure and the convenience of operation, an electromagnetic clamping structure can be adopted. Through electromagnetic control, the operator can remotely control the opening and closing of the locking structure outside the equipment, which not only improves the convenience of operation, but also reduces the direct contact between the operator and the equipment, thereby improving the safety of operation.

[0040] The outer walls of the second baffle plate 404 and the first baffle plate 304 are both provided with sealing rings 9. When the first baffle plate 304 and the second baffle plate 404 are in contact with each other and connected, the two sealing rings 9 are pressed against each other to form a sealing structure.

[0041] The sealing ring 9 is an elastic and wear-resistant rubber ring. When the two sealing rings 9 are squeezed, elastic deformation occurs, so that a sealing structure is formed at the connection between the two.

[0042] By setting the sealing ring 9, when the coarse grinding unit 3 is connected to the fine grinding unit 4, the impurity discharge area 2 is isolated from the two. When the coarse grinding unit 3 is separated from the fine grinding unit 4, the impurity discharge area 2 is connected to the two.

[0043] In summary, when the device is performing ball milling operation, the separation mechanism is used to drive the coarse grinding unit 3 and the fine grinding unit 4 to be connected, and the two sealing rings 9 are squeezed against each other to produce elastic deformation, so that a sealing structure is formed at the connection between the two. At this time, the interior of the coarse grinding cylinder 302 and the interior of the fine grinding cylinder 402 are isolated from the impurity discharge area 2; when the device is cleaned, the separation mechanism is used to drive the coarse grinding unit 3 and the fine grinding unit 4 to be separated, and the two sealing rings 9 are separated. At this time, the interior of the coarse grinding cylinder 302 and the interior of the fine grinding cylinder 402 are connected to the impurity discharge area 2, and cleaning water is injected from the feed port 301 and the discharge port 401 respectively, and the coarse grinding cylinder 302 and the fine grinding cylinder 402 are driven to rotate synchronously by the reduction mechanism, so as to realize the cleaning of the interior of the coarse grinding cylinder 302 and the fine grinding cylinder 402. At the same time, the impurities mixed with water enter the impurity discharge area 2 through the through hole 1 305 and the through hole 2 405 respectively and are discharged.

[0044] The reduction mechanism includes a reducer 10, the input end of the reducer 10 is fixedly connected to the output end of the servo motor 11, the output end of the reducer 10 is fixedly connected to a gear 2 12, the tooth end of the gear 2 12 is meshedly connected to the tooth end of the gear 1 7, and the bottom wall of the reducer 10 and the bottom wall of the servo motor 11 are both fixedly connected to the upper surface of the base 8.

[0045] The separation mechanism includes a slide groove 13, which is opened on the upper part of the base 8 and located below the coarse grinding cylinder 302. The bottom of the support seat 5 is embedded in and slidably connected to the slide groove 13. A screw rod 14 is rotatably connected in the slide groove 13. The threaded portion of the screw rod 14 passes through and is threadedly connected to the lower part of the support seat 5. A motor 15 is fixedly connected to the side wall of the base 8, and the output end of the motor 15 is fixedly connected to one end of the screw rod 14.

[0046] The motor 15 drives the screw rod 14 to rotate, thereby driving the support seat 5 to slide in the slide groove 13, driving the coarse grinding cylinder 302 to move, and finally realizing the separation and connection of the coarse grinding unit 3 and the fine grinding unit 4.

[0047] Of course, the separation mechanism can also choose another structure, namely: the separation mechanism includes a second slide groove 16, the second slide groove 16 is opened on the upper part of the base 8 and is located below the fine grinding cylinder 402, the bottom of the support seat 6 is embedded and slidably connected in the second slide groove 16, and a second screw rod 17 is rotatably connected in the second slide groove 16, the threaded portion of the second screw rod 17 passes through and is threadedly connected to the lower part of the support seat 6, and a second motor 18 is fixedly connected to the side wall of the base 8, and the output end of the second motor 18 is fixedly connected to one end of the second screw rod 17.

[0048] The second motor 18 drives the second screw rod 17 to rotate, thereby driving the second support seat 6 to slide in the second slide groove 16, driving the fine grinding cylinder 402 to move, and finally realizing the separation and connection of the fine grinding unit 4 and the coarse grinding unit 3.

[0049] A sewage discharge groove 19 is provided in the middle of the base 8 , and a top wheel 20 is rotatably connected in the sewage discharge groove 19 , and the outer wall of the top wheel 20 is nested and connected with the outer wall of the impurity discharge area 2 .

[0050] The outer wall of the top wheel 20 is nested and connected with the outer wall of the impurity discharge area 2. On the one hand, it limits the impurity discharge area 2 to prevent it from moving horizontally. On the other hand, it rotates synchronously with the impurity discharge area 2 to provide support for the impurity discharge area 2 to ensure stable rotation of the entire device.

[0051] The operation steps of a ball milling device for preparing a master alloy are as follows:

[0052] Feeding stage

[0053] The intermediate alloy raw material to be processed enters the device through the feed port 301 on the side of the rough grinding unit 3 away from the impurity discharge area 2. Due to the nested sliding connection between the rough grinding unit 3 and the ball mill 1 and the interlocking fixation in the circumferential direction, the rough grinding unit 3 is stably in place at this time, ready for the subsequent rough grinding process. The feeding process can accurately control the feeding amount and feeding speed through the automatic feeding equipment according to the actual production needs to ensure that the amount of raw materials entering the rough grinding unit 3 meets the process requirements.

[0054] Coarse grinding stage

[0055] The speed reduction mechanism is started, and the high-speed power output by the servo motor 11 is precisely reduced by the speed reducer 10, and then driven by the meshing transmission of the gear 2 12 and the gear 1 7, the ball mill 1 starts to rotate. Since the rough grinding unit 3 and the ball mill 1 are mutually fixed in the circumferential direction, the rotation of the ball mill 1 synchronously drives the rough grinding unit 3 to rotate around the axis. Under the combined action of centrifugal force and gravity, the rough grinding medium in the rough grinding cylinder 302 is lifted and thrown down as the rough grinding cylinder 302 rotates. In this process, the rough grinding medium continuously collides with a plurality of irregularly distributed hemispherical bumps 1 303 fixed on the inner wall of the rough grinding cylinder 302, and also collides with the intermediate alloy raw material entering the rough grinding cylinder 302. The existence of the hemispherical bump 1 303 changes the movement trajectory of the rough grinding medium and the raw material, making their movement more disordered and complex, and greatly increasing the randomness and frequency of collisions. For example, when the coarse grinding medium hits the hemispherical protrusion 303 at a certain speed, its movement direction will change along the hemispherical surface, thereby colliding with the raw material or other coarse grinding media again from different angles. For raw materials with higher hardness, the adapted high-hardness coarse grinding medium can effectively break up large particles of raw materials in multiple collisions by virtue of its own strength; and for raw materials with greater viscosity, a higher coarse grinding medium filling ratio increases the contact opportunity between the raw material and the medium, so that the raw material can be fully dispersed and preliminarily ground, completing the preliminary coarse grinding process.

[0056] Coarse and fine grinding transition stage

[0057] The materials after preliminary rough grinding need to enter the fine grinding unit 4 for further processing. At this time, the special design of baffle 1 304 and baffle 2 404 is used to screen the materials with suitable particle size. If the materials with finer particle size need to enter the fine grinding cylinder 402, the rotation angle can be accurately adjusted according to the angle scale mark on the rough grinding cylinder 302 or the fine grinding cylinder 402, so that the aperture of the overlapping part of the through hole 1 305 on baffle 1 304 and the through hole 2 405 on baffle 2 404 becomes smaller, thereby blocking the passage of materials with larger particle size, and only allowing the materials with smaller particle size that meet the requirements to enter the fine grinding cylinder 402 from the rough grinding cylinder 302; on the contrary, if the materials with larger particle size need to enter the fine grinding cylinder 402, the aperture of the overlapping part is increased. This flexible particle size screening mechanism can meet the diverse requirements of different intermediate alloy products for particle size. Of course, this adjustment is pre-adjusted according to the processing requirements.

[0058] Fine grinding stage

[0059] The material entering the fine grinding unit 4 begins the fine grinding process in the fine grinding cylinder 402. Similar to the coarse grinding stage, the rotation of the ball mill 1 drives the fine grinding unit 4 to rotate synchronously. Under the action of centrifugal force and gravity, the fine grinding medium in the fine grinding cylinder 402 collides with the hemispherical protrusion 2 403 fixed on the inner wall of the fine grinding cylinder 402 and the material. The particle size of the hemispherical protrusion 2 403 is smaller than that of the hemispherical protrusion 1 303, which makes the fine grinding process more refined. When the fine grinding medium hits the hemispherical protrusion 2 403, its movement direction changes more frequently and subtly, thereby grinding the material more finely. At the same time, if a temperature control system is set in the fine grinding cylinder 402, for some intermediate alloy raw materials with better plasticity at a specific temperature, the material can be placed in a suitable temperature environment by heating or cooling the inside of the fine grinding cylinder 402. For example, when the material temperature rises to a certain level, its hardness and viscosity decrease, making it easier to be ground by fine grinding media, which significantly improves the efficiency of fine grinding and product quality, and ultimately obtains an intermediate alloy product that meets the requirements. The finished product is discharged through the discharge port 401 on the side of the fine grinding unit 4 away from the impurity discharge area 2.

[0060] Cleaning stage

[0061] After completing a batch of ball milling operations, the device needs to be cleaned. Start the separation mechanism. Take the separation mechanism below the coarse grinding unit 3 as an example. The motor 15 drives the screw 14 to rotate. The threaded connection between the screw 14 and the support seat 15 allows the support seat 15 to slide along the screw axial direction in the slide groove 13, driving the coarse grinding unit 3 to move away from the fine grinding unit 4; or the motor 2 18 below the fine grinding unit 4 drives the screw 2 17 to rotate, driving the fine grinding unit 4 to move away from the coarse grinding unit 3, thereby realizing the separation of the coarse grinding unit 3 and the fine grinding unit 4. As the two separate, the sealing ring 9 that conflicts between the baffle 1 304 and the baffle 2 404 is also separated, and the impurity discharge area 2 is connected with the inside of the coarse grinding cylinder 302 and the inside of the fine grinding cylinder 402. Washing water is injected from the feed port 301 and the discharge port 401 respectively, and at the same time, the speed reduction mechanism drives the ball mill 1 to rotate, thereby driving the coarse grinding cylinder 302 and the fine grinding cylinder 402 to rotate synchronously. During the rotation process, the cleaning water forms a flow in the cylinder, flushing the cylinder wall, hemispherical protrusions and residual impurities. After the impurities are mixed with water, they enter the impurity discharge area 2 through the through hole 1 305 of the baffle 1 304 and the through hole 2 405 of the baffle 2 404, and then discharged from the discharge port on the impurity discharge area 2. The smooth corrosion-resistant coating on the inner surface of the impurity discharge area 2 reduces the adhesion of impurities, and the filter at the discharge port performs preliminary filtration on the discharged sewage to prevent pipe clogging. The top wheel 20 rotatably connected in the sewage trough 19 in the middle of the base 8 has an outer wall nested with the outer wall of the impurity discharge area 2. When the ball mill cylinder 1 rotates, the top wheel 20 rotates synchronously with the impurity discharge area 2, providing support for the impurity discharge area 2 and playing a limiting role, ensuring that the impurity discharge area 2 is stable during the cleaning process, and the drainage slope in the sewage trough 19 enables the sewage to flow quickly to the sewage outlet under the action of gravity, avoiding sewage accumulation, ensuring that the cleaning work is completed efficiently, and preparing for the next batch of ball milling operations.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball milling device for preparing an intermediate alloy, comprising a ball milling barrel (1), characterized in that: An impurity discharge area (2) is provided in the middle of the ball mill (1); a coarse grinding unit (3) is slidably connected to one side of the ball mill (1); and a fine grinding unit (4) is provided on the other side; when the coarse grinding unit (3) and the fine grinding unit (4) are connected, the impurity discharge area (2) is isolated from the two; when the coarse grinding unit (3) and the fine grinding unit (4) are separated, the impurity discharge area (2) is connected to the two; the coarse grinding unit (3) is used to perform coarse grinding on the intermediate alloy; a feed inlet (301) is provided on a side away from the impurity discharge area (2) and is rotatably connected to the coarse grinding unit (3). On the upper part of the support seat 1 (5), the fine grinding unit (4) is used for fine grinding the intermediate alloy, and a discharge port (401) is provided on the side away from the impurity discharge area (2), and is rotatably connected to the upper part of the support seat 2 (6). A gear 1 (7) is fixedly connected to the outer wall of the ball mill (1) on the side close to the discharge port (401), and the gear 1 (7) is driven to rotate by a reduction mechanism. A base (8) is provided below the ball mill (1), and a separation mechanism is provided in the base (8) for driving the separation and connection of the coarse grinding unit (3) and the fine grinding unit (4).

2. A ball milling device for preparing a master alloy according to claim 1, characterized in that: The rough grinding unit (3) comprises a rough grinding cylinder (302), the outer wall of the rough grinding cylinder (302) being embedded and slidably connected to the inner wall of the ball grinding cylinder (1), the inner wall of the rough grinding cylinder (302) being fixedly connected with a plurality of irregularly distributed hemispherical protrusions (303), and a plurality of rough grinding media being arranged in the rough grinding cylinder (302).

3. A ball milling device for preparing a master alloy according to claim 2, characterized in that: A baffle plate 1 (304) is fixedly connected to one side of the coarse grinding cylinder (302) close to the impurity discharge area (2), and a plurality of through holes 1 (305) evenly distributed around the center of the baffle plate 1 (304) are formed on the plate body of the baffle plate 1 (304).

4. A ball milling device for preparing a master alloy according to claim 3, characterized in that: The fine grinding unit (4) comprises a fine grinding cylinder (402), the outer wall of the fine grinding cylinder (402) being embedded in and slidably connected to the inner wall of the ball grinding cylinder (1), the inner wall of the fine grinding cylinder (402) being fixedly connected with a plurality of irregularly distributed hemispherical protrusions (403), the particle size of the hemispherical protrusions (403) being smaller than the particle size of the hemispherical protrusions (303), and a plurality of fine grinding media being arranged in the fine grinding cylinder (402).

5. A ball milling device for preparing a master alloy according to claim 4, characterized in that: A second baffle plate (404) is fixedly connected to the side of the fine grinding cylinder (402) close to the impurity discharge area (2), and a plurality of second through holes (405) evenly distributed around the center of the baffle plate (404) are formed on the plate body of the second baffle plate (404).

6. A ball milling device for preparing a master alloy according to claim 5, characterized in that: The outer walls of the second baffle plate (404) and the first baffle plate (304) are both provided with sealing rings (9); when the first baffle plate (304) and the second baffle plate (404) are in contact with each other and connected, the two sealing rings (9) are pressed against each other to form a sealing structure.

7. The ball milling device for preparing a master alloy according to claim 1, characterized in that: The speed reduction mechanism comprises a speed reducer (10), the input end of the speed reducer (10) being fixedly connected to the output end of the servo motor (11), the output end of the speed reducer (10) being fixedly connected to a second gear (12), the tooth end of the second gear (12) being meshingly connected to the tooth end of the first gear (7), and the bottom wall of the speed reducer (10) and the bottom wall of the servo motor (11) being fixedly connected to the upper surface of the base (8).

8. The ball milling device for preparing a master alloy according to claim 1, characterized in that: The separation mechanism comprises a slide groove (13), wherein the slide groove (13) is opened at the upper part of the base (8) and is located below the coarse grinding cylinder (302); the bottom of the support seat (5) is embedded in and slidably connected to the slide groove (13); a screw rod (14) is rotatably connected to the slide groove (13); the threaded portion of the screw rod (14) passes through and is threadedly connected to the lower part of the support seat (5); a motor (15) is fixedly connected to the side wall of the base (8); and the output end of the motor (15) is fixedly connected to one end of the screw rod (14).

9. The ball milling device for preparing a master alloy according to claim 1, characterized in that: The separation mechanism comprises a second slide groove (16), wherein the second slide groove (16) is provided at the upper part of the base (8) and is located below the fine grinding cylinder (402); the bottom of the second support seat (6) is embedded in and slidably connected to the second slide groove (16); a second screw rod (17) is rotatably connected to the second slide groove (16); the threaded portion of the second screw rod (17) passes through and is threadedly connected to the lower part of the second support seat (6); a second motor (18) is fixedly connected to the side wall of the base (8); and the output end of the second motor (18) is fixedly connected to one end of the second screw rod (17).

10. The ball milling device for preparing a master alloy according to claim 1, characterized in that: A sewage discharge groove (19) is provided in the middle of the base (8), a top wheel (20) is rotatably connected in the sewage discharge groove (19), and an outer wall of the top wheel (20) is nested and connected with an outer wall of the impurity discharge area (2).

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