Wet ball-milling separation equipment and method

Abstract

The invention provides wet-type ball-milling separation equipment and method.The wet-type ball-milling separation equipment comprises an outer cylinder, an inner cylinder, a cleaning device and a driving mechanism, a feeding port is formed in one end of the inner cylinder, a grinding body is arranged in the inner cylinder, and the inner cylinder penetrates through the outer cylinder in the axial direction and is coaxially and rotationally connected with the outer cylinder; a containing cavity is formed between the outer side wall of the inner cylinder body and the inner side wall of the outer cylinder body, a plurality of through holes are formed in the outer side wall of the inner cylinder body, and the through holes communicate with the containing cavity; the cleaning device is arranged on the outer side wall of the inner cylinder body in the outer cylinder body, and the cleaning device can be in contact with the inner side wall of the outer cylinder body when the inner cylinder body rotates; the driving mechanism is in transmission connection with the inner barrel and used for driving the inner barrel to rotate around the axis. According to the invention, the grinding effect and quality are improved, and the downtime and maintenance cost caused by material blockage or insufficient cleaning are reduced.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and in particular to a wet ball milling separation device and method. Background Technology

[0002] Ball mills are widely used high-fineness grinding machines in industrial production, and are extensively used in industries such as chemical engineering, mineral processing, and building materials. They can be classified into dry and wet types based on the moisture content of the material being processed, and into vertical and horizontal types based on their structural form. A wet ball mill consists of a horizontal, rotating cylinder and grinding media loaded inside. Material is fed into the cylinder through the feed end. As the cylinder rotates, the grinding media are lifted to a certain height under the action of centrifugal force and gravity and then thrown down. The material is gradually pulverized under the impact and grinding action of the falling grinding media, and the pulverized ore is discharged from the cylinder through the discharge section.

[0003] However, the uniformity of the material particles after crushing has a great impact on product quality. The grinding effect of existing ball mills is difficult to control, and there is over-grinding, making it difficult to achieve the purpose of precise grinding. Moreover, when the crushed material is discharged, it is easy to cause local blockage at the discharge port, and some material adheres to the inner wall of the discharge device, affecting the continuous operation of the ball mill and the crushing efficiency of the ball mill. Summary of the Invention

[0004] This invention provides a wet ball mill separation device and method to solve the problems of poor grinding effect and easy clogging in the prior art. It has the characteristics of high crushing efficiency, high uniformity of output particles and easy clogging, and is especially suitable for occasions with large material processing volume and high particle size requirements.

[0005] This invention provides a wet ball milling separation device, comprising: The outer cylinder is configured as a frustum, and the outer cylinder is horizontally arranged along the axial direction. A discharge port is provided at the bottom of the end with the largest diameter of the outer cylinder. The inner cylinder is cylindrical, with a feed inlet at one end corresponding to the end of the outer cylinder with the smallest diameter. A grinding element is disposed inside the inner cylinder. The inner cylinder extends axially through the outer cylinder and is rotatably connected to the outer cylinder. A receiving cavity is formed between the outer side wall of the inner cylinder and the inner side wall of the outer cylinder. Multiple through holes are provided on the outer side wall of the inner cylinder, and the through holes and the discharge port are all connected to the receiving cavity. A cleaning device is disposed on the outer side wall of the inner cylinder located within the outer cylinder, and the cleaning device is capable of contacting the inner side wall of the outer cylinder when the inner cylinder rotates; A drive mechanism is connected to the inner cylinder and is used to drive the inner cylinder to rotate around an axis.

[0006] According to the wet ball mill separation device provided by the present invention, the feed inlet is located at the center of the end of the inner cylinder, and a feed pipe is provided at the feed inlet, the feed pipe being rotatably connected to the feed inlet.

[0007] According to the wet ball mill separation equipment provided by the present invention, the cleaning device includes a spiral connector and a plurality of scraper blades. The spiral connector is arranged on the outer side wall of the inner cylinder along a spiral trajectory, and the distance between the spiral connector at each position and the inner side wall of the outer cylinder is consistent. The plurality of scraper blades are arranged on the spiral connector along a spiral trajectory.

[0008] According to the wet ball mill separation device provided by the present invention, the scraper blade is positioned at the highest and lowest points of the outer cylinder corresponding to the spiral connector in each revolution, and the side of the scraper blade corresponding to the inner sidewall of the outer cylinder is set as an arc surface, which is in contact with the inner sidewall of the outer cylinder.

[0009] According to the wet ball milling separation device provided by the present invention, the scraper blade includes a first end and a second end, the thickness of which increases from the first end to the second end along the movement direction of the scraper blade, and the first end is provided with a sharp corner.

[0010] According to the wet ball mill separation device provided by the present invention, the cross-section of the scraper blade includes an arc and two straight edges. The arc corresponds to the outer cylinder, the central angle corresponding to the arc is 5 to 20°, and the length of the straight edge opposite the sharp angle is 6 to 20 mm.

[0011] According to the wet ball mill separation device provided by the present invention, a plurality of scraper blades are connected to the side of the spiral connector facing the discharge port, and the number of scraper blades is at least twice the number of spiral turns of the spiral connector.

[0012] According to the wet ball milling separation device provided by the present invention, the driving mechanism includes: Driven teeth are arranged around the end of the inner cylinder; A drive motor is provided with a drive tooth on its output shaft, and the drive tooth meshes with the driven tooth for transmission.

[0013] According to the wet ball milling separation equipment provided by the present invention, a rotary dynamic sealing structure is provided between the feed pipe and the feed inlet, and between the outer wall of the inner cylinder and the two ends of the outer cylinder.

[0014] According to the wet ball milling separation equipment provided by the present invention, the distance between the outer side of the spiral connector and the inner sidewall of the outer cylinder is 1 to 5 mm.

[0015] Secondly, the present invention also provides a wet ball milling separation method, which utilizes the wet ball milling separation equipment described in the first aspect.

[0016] The wet ball milling separation method provided by the present invention includes the following steps: Liquid is continuously fed into the inner cylinder from the feed pipe, the liquid level inside the inner cylinder is controlled, and the liquid is continuously discharged from the outlet. After the liquid level is stabilized, the material is fed into the inner cylinder through the feed pipe. The material is mixed or cooled in the liquid and then crushed. During the crushing process, the material particles that reach the target particle size are thrown out from the through hole of the inner cylinder and enter the receiving cavity under the action of centrifugal force and the impact force of the grinding media. The material particles entering the receiving cavity are divided into two groups: some directly enter the liquid inside the receiving cavity, while others adhere to the inner wall of the outer cylinder. The cleaning device, driven by the inner cylinder, scrapes off the particles adhering to the inner wall of the outer cylinder and they fall into the liquid inside the receiving cavity, and are continuously discharged from the outlet along with the liquid.

[0017] This invention provides a wet ball mill separation device, comprising: an outer cylinder, an inner cylinder, a cleaning device, and a drive mechanism. The device has a reasonable structure and significant effects. During operation, the frustum-shaped outer cylinder design causes its inner wall to slope from the inlet to the outlet, providing a guiding effect. Material particles entering the receiving cavity move along the inclined surface of the receiving cavity to the outlet under their own gravity, facilitating continuous material discharge, preventing blockage, and improving work efficiency. By simultaneously containing liquid in the receiving cavity and the inner cylinder, compared to the traditional single-cylinder design, this invention lowers the liquid level in the cylinder containing the grinding media, thereby reducing the impact of grinding media being disturbed during the rotation of the inner cylinder. The impact force lost when thrown into the liquid enhances the effective impact of the grinding media on the material, improving the grinding effect and quality. After the material is fed into the inner cylinder through the feed inlet and crushed, the combined action of centrifugal force and the impact force of the grinding media allows the crushed material that has reached the target particle size to directly enter the receiving cavity through the through hole, reducing the accumulation and blockage of material particles in the inner cylinder and avoiding over-crushing of material particles that have reached the target particle size, thus improving the uniformity of material particles. When the inner cylinder rotates, it drives the cleaning device to move along the inner wall of the outer cylinder, scraping off the particles attached to the inner wall of the outer cylinder, reducing downtime and maintenance costs caused by material blockage or insufficient cleaning, and improving the service life of the equipment.

[0018] Furthermore, the dual design of the frustum-shaped outer cylinder and the spiral cleaning device allows the material particles entering the receiving chamber to move along the inclined surface of the receiving chamber to the discharge port under their own gravity. The spirally arranged scrapers can push the material towards the discharge port. Moreover, the spiral scrapers experience less resistance in the material slurry when rotating with the inner cylinder, which can reduce the energy loss of the ball mill. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a front view of a wet ball mill separation device provided in an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the central cross-sectional structure of a wet ball mill separation device provided in an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the scraper blade provided in an embodiment of the present invention.

[0023] Figure label: 1. Outer cylinder; 2. Inner cylinder; 21. Through hole; 3. Grinding body; 4. Receiving cavity; 5. Cleaning device; 51. Spiral connector; 52. Scraper blade; 521. Arc surface; 6. Feed pipe; 7. Discharge port; 8. Driven gear; 9. Driven gear; 10. Drive motor; 11. Rotary dynamic sealing structure; 12. First support member; 13. Second support member. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0025] The following is combined Figures 1-3 This invention describes a wet ball milling separation device and method.

[0026] This embodiment provides a wet ball mill separation device, including: an outer cylinder 1, an inner cylinder 2, a cleaning device 5, and a drive mechanism.

[0027] The outer cylinder 1 is frustum-shaped and horizontally arranged along the axial direction. A discharge port 7 is provided at the bottom of the end with the largest diameter of the outer cylinder 1. The inner cylinder 2 is cylindrical. A feed port is provided at one end of the inner cylinder 2, which corresponds to the end with the smallest diameter of the outer cylinder 1. A grinding body 3 is provided in the inner cylinder 2. The inner cylinder 2 passes through the outer cylinder 1 along the axial direction and is coaxially rotatably connected to the outer cylinder 1. A receiving cavity 4 is formed between the outer side wall of the inner cylinder 2 and the inner side wall of the outer cylinder 1. Multiple through holes 21 are provided on the outer side wall of the inner cylinder 2. The through holes 21 and the discharge port 7 are all connected to the receiving cavity 4. A cleaning device 5 is provided on the outer side wall of the inner cylinder 2 located in the outer cylinder 1. The cleaning device 5 can contact the inner side wall of the outer cylinder 1 when the inner cylinder 2 rotates. A drive mechanism is connected to the inner cylinder 2 for driving the inner cylinder 2 to rotate around the axis.

[0028] With this design, the present invention has a reasonable structure and significant effects. During operation, the frustum-shaped outer cylinder 1, with its inner wall inclined from the inlet to the outlet 7, provides a certain guiding effect. Material particles entering the receiving cavity 4 move along the inclined surface of the receiving cavity 4 to the outlet 7 under their own gravity, facilitating continuous material discharge, preventing blockage, and improving work efficiency. By simultaneously containing liquid in the receiving cavity 4 and the inner cylinder 2, compared to the traditional single-cylinder design, the present invention lowers the liquid level in the cylinder containing the grinding media 3, thereby reducing the impact force lost when the grinding media 3 is thrown into the liquid during the rotation of the inner cylinder 2, increasing efficiency. The grinding media 3 enhances the effective impact of the grinding media on the material, improving the grinding effect and quality. After the material is fed into the inner cylinder 2 through the feed inlet and crushed, the material that has reached the target particle size after crushing enters the receiving cavity 4 directly from the through hole 21 through the dual action of centrifugal force and the impact force of the grinding media 3. This reduces the accumulation and blockage of material particles in the inner cylinder 2 and avoids over-crushing of material particles that have reached the target particle size, thus improving the uniformity of the material particles. When the inner cylinder 2 rotates, it drives the cleaning device 5 to move along the inner wall of the outer cylinder 1, scraping off the particles attached to the inner wall of the outer cylinder 1. This reduces downtime and maintenance costs caused by material blockage or insufficient cleaning, and improves the service life of the equipment.

[0029] In this embodiment, the feed inlet is located at the center of the end of the inner cylinder 2, and a feed pipe 6 is provided at the feed inlet, which is rotatably connected to the feed inlet.

[0030] With this configuration, the feed inlet is located at the center of the end of the inner cylinder 2. This design helps the material to be evenly distributed when entering the inner cylinder 2, reducing material accumulation and segregation in the initial stage, thereby improving the uniformity and efficiency of grinding. At the same time, feeding can be achieved without stopping the machine, realizing the continuous and stable entry of material into the inner cylinder 2, ensuring the continuity and stability of the grinding process. The ground material can naturally settle to the bottom of the receiving cavity 4 and be smoothly discharged through the discharge port 7. Since the discharge port 7 is directly connected to the receiving cavity 4, and the inner cylinder 2 continuously throws the ground material into the receiving cavity 4 through the through hole 21 during rotation, continuous discharge can be achieved. This continuous discharge method helps maintain the stability and efficiency of the grinding process.

[0031] Furthermore, such as Figure 2 As shown, a rotary dynamic sealing structure 11 is provided between the feed pipe 6 and the feed port, and between the outer wall of the inner cylinder 2 and the two ends of the outer cylinder 1, to prevent leakage of materials and liquids at the rotary connection. The dynamic sealing structure can be a packing seal, a mechanical seal, a lip seal, etc. It should be noted that the rotary dynamic sealing structure 11 is a product of the prior art, and its structure and principle are not the focus of this article and will not be elaborated here.

[0032] This configuration, by providing rotary dynamic sealing structures 11 at both rotating connections, ensures that the inner cylinder 2 remains sealed during grinding, preventing material leakage. At the same time, it also enables the material to enter the inner cylinder 2 continuously and stably, ensuring the continuity and stability of the grinding process.

[0033] In this embodiment, the cleaning device 5 includes a spiral connector 51 and a plurality of scraper blades 52. The spiral connector 51 is arranged on the outer side wall of the inner cylinder 2 along a spiral trajectory, and the distance between the spiral connector 51 at each position and the inner side wall of the outer cylinder 1 is consistent. The plurality of scraper blades 52 are arranged on the spiral connector 51 along a spiral trajectory.

[0034] Preferably, the distance between the spiral connector 51 and the inner wall of the outer cylinder 1 is 1 to 5 mm. An appropriate distance helps to reduce the direct contact area between the scraper blade 52 and the outer cylinder 1, thereby reducing the wear rate. Although a small distance can improve the cleaning effect, it will accelerate the wear of the scraper blade 52, while a large distance may reduce the cleaning efficiency.

[0035] In some embodiments, the scraper blades 52 are positioned at the highest and lowest points of the outer cylinder 1 corresponding to each turn of the spiral connector 51. This helps to reduce or eliminate potential cleaning dead zones, ensuring that material at these critical locations can be effectively scraped off. Therefore, the arrangement of the scraper blades 52 can directly target these areas for cleaning, thereby improving the overall cleaning effect. Furthermore, it can also optimize the flow of material. When the spiral rotates, the scraper blades 52 push the material along the spiral trajectory and provide additional pushing force at these critical locations, preventing material accumulation or blockage, thereby improving the flowability and processing efficiency of the material.

[0036] like Figure 3 As shown, the scraper blade 52 has an arc surface 521 on one side corresponding to the inner wall of the outer cylinder 1, and the arc surface 521 is in contact with the inner wall of the outer cylinder 1. The cross-section of the scraper blade 52 includes an arc and two straight edges. The arc corresponds to the outer cylinder 1, and the central angle corresponding to the arc is 5 to 20°, preferably 10 to 15°. The length of the straight edge opposite the sharp angle is 6 to 20 mm, preferably 8 to 14 mm.

[0037] With this configuration, the center and diameter of the arc surface 521 and the inner wall of the outer cylinder 1 are the same, ensuring that the scraper blade 52 can fit tightly and smoothly against the inner wall of the outer cylinder 1, reducing the gap and friction between them, improving the cleaning effect on the attached particles, and ensuring the cleanliness of the inner wall of the outer cylinder 1. At the same time, by designing the center angle of the arc surface 521 of the scraper blade 52, it is ensured that the scraper blade 52 has a certain scraping ability, while avoiding wear problems caused by excessive contact pressure. This allows the scraper blade 52 to operate stably and efficiently during operation, while extending the service life of both the scraper blade 52 and the outer cylinder 1.

[0038] In this embodiment, the scraper blade 52 includes a first end and a second end. Along the movement direction of the scraper blade 52, the thickness increases from the first end to the second end, and the first end is provided with a sharp corner.

[0039] This design, with its pointed ends, allows the scraper blade 52 to smoothly remove material particles adhering to the inner wall of the outer cylinder 1, reducing resistance and energy consumption and improving work efficiency. The design of increasing thickness from the first end to the second end along the direction of scraper blade 52's movement allows the scraper blade 52 to generate progressive pressure changes during the scraping process. The initial pointed part first makes preliminary cuts and loosens the material, while the thicker part provides more support and stronger scraping force, ensuring thorough removal of the target object. This design helps reduce vibration and noise during a single scraping process, while improving the uniformity and efficiency of scraping.

[0040] In this embodiment, multiple scraper blades 52 are connected to the side of the spiral connector 51 facing the discharge port 7, which is beneficial for pushing the material to the discharge port 7. The number of scraper blades 52 is at least twice the number of spiral turns of the spiral connector 51.

[0041] With this configuration, since the number of scraper blades 52 is much greater than the number of spiral turns of the spiral connector 51, multiple scraper blades 52 will sequentially contact and clean the inner wall of the outer cylinder 1 in each rotation of the spiral connector 51. This helps to reduce or eliminate dead corners in the cleaning process, and can more effectively scrape off the material attached to the wall surface, thereby improving cleaning efficiency and quality. It also helps to balance the force on the spiral connector 51 during rotation, reducing vibration and noise caused by uneven force, and improving the stability and reliability of the equipment.

[0042] In some embodiments, the drive mechanism includes a driven tooth 8, a driving tooth 9, and a drive motor 10, wherein the driven tooth 8 is sleeved on the end of the inner cylinder 2, and the driving tooth 9 is provided on the output shaft of the drive motor 10, and the driving tooth 9 is meshed with the driven tooth 8 for transmission connection.

[0043] In this embodiment, a first support member 12 and a second support member 13 are also included. The first support member 12 is connected to both ends of the inner cylinder 2 through a rotary support, and the second support member is fixedly connected to the outer side wall of the outer cylinder 1.

[0044] In some embodiments, the distance between the outer side wall of the inner cylinder 2 and the inner side wall of the outer cylinder 1 is 0.1 to 0.6 times the radius of the inner cylinder 2, preferably 0.2 to 0.5 times.

[0045] This design, with its appropriate spacing, allows the material to form a stable flow layer within the annular receiving cavity 4 during the rotation of the inner cylinder 2, reducing dead zones and material retention, and facilitating continuous material discharge. Furthermore, the appropriate spacing ensures good stability for both the outer cylinder 1 and the inner cylinder 2 during rotation, reducing vibration and noise. Moreover, by adjusting the spacing between the outer wall of the inner cylinder 2 and the inner wall of the outer cylinder 1, the processing requirements of different materials can be accommodated. For example, for highly viscous materials, the spacing can be increased to reduce friction between the scraper blade 52 and the wall surface, while for materials requiring efficient mixing, the spacing can be decreased to promote material flow and mixing.

[0046] In this embodiment, the length of the outer cylinder 1 is 0.5 to 0.9 times the length of the inner cylinder 2, preferably 0.6 to 0.8 times. The grinding body 3 is spherical or cylindrical, and its outer surface is provided with several protrusions. By providing multiple protrusions on the surface of the grinding body 3, the contact area between the grinding body 3 and the material can be increased, and a certain shear force and friction force can be formed. The protrusion design can also change the movement trajectory of the grinding body 3, so that the grinding body 3 generates more effective collisions and frictions during the grinding process, thereby improving the grinding accuracy and quality.

[0047] Furthermore, the total area of ​​the through hole 21 is 1.5 to 5 times the cross-sectional area of ​​the discharge port 7, preferably 2 to 4 times. Specifically, the through hole 21 can be a large hole or a small hole. The diameter of the small hole is determined according to the particle size requirements of the material, and the diameter of the large hole is 5 to 15 mm. A large-hole wire mesh is fixedly connected at the large hole, and the mesh number of the large-hole wire mesh is determined according to the particle size requirements.

[0048] This configuration, where the total area of ​​the through-hole 21 is within a certain range relative to the cross-sectional area of ​​the outlet 7, considers both the need for smooth material flow and the stability and reliability of the equipment. Since different materials have different characteristics such as flowability, viscosity, and particle size, adjusting the ratio of the total area of ​​the through-hole 21 to the cross-sectional area of ​​the outlet 7 according to actual needs can adapt to the conveying requirements of different materials. For example, for materials with high viscosity or large particles, the total area of ​​the through-hole 21 can be appropriately increased to improve the flowability of the material. By making the total area of ​​the through-hole 21 larger than the cross-sectional area of ​​the outlet 7, the resistance of the material during the flow process can be reduced, allowing the material to pass through the outlet 7 more smoothly, preventing material blockage, and improving the working efficiency of the equipment.

[0049] The present invention provides a wet ball mill separation device in which liquid can exist simultaneously in the receiving cavity 4 and the inner cylinder 2. Compared with the traditional single cylinder design, the present invention reduces the height of the liquid level in the cylinder in which the grinding media 3 are placed, thereby reducing the impact force lost when the grinding media 3 is thrown into the liquid during the rotation of the inner cylinder 2, enhancing the effective impact of the grinding media 3 on the material, and improving the grinding effect and quality. After the material is fed into the inner cylinder 2 through the feed inlet and crushed, the centrifugal force and the impact force of the grinding media 3 allow the crushed material that has reached the target particle size to directly enter the receiving cavity 4 through the through hole 21. This reduces the accumulation and blockage of material particles in the inner cylinder 2 and avoids over-crushing of material particles that have reached the target particle size, thus improving the uniformity of the material particles. When the inner cylinder 2 rotates, it drives the cleaning device 5 to move along the inner wall of the outer cylinder 1. The spiral cleaning device 5 works in conjunction with the frustum-shaped outer cylinder 1 to guide the flow. The spirally arranged scraper blades 52 experience less resistance in the material slurry when the inner cylinder 2 rotates, and can also push the material towards the discharge port 7, which is conducive to the continuous flow of material slurry from the discharge port 7, reducing the energy consumption loss of the ball mill. By scraping off the particles attached to the inner wall of the outer cylinder 1, the downtime and maintenance costs caused by material blockage or insufficient cleaning are reduced, thus improving the service life of the equipment.

[0050] This invention also provides a wet ball milling separation method, which uses the aforementioned wet ball milling separation equipment and includes the following steps: Step 1: Liquid is continuously fed into the inner cylinder 2 from the feed pipe 6, the liquid level in the inner cylinder 2 is controlled, and the liquid is continuously discharged from the outlet 7 at the same time. Step 2: After the liquid level is stabilized, the material is fed into the inner cylinder 2 through the feed pipe 6. The material is mixed in the liquid or cooled and then crushed. Step 3: During the material crushing process, the material particles that have reached the target particle size are thrown out from the through hole 21 of the inner cylinder 2 and enter the receiving cavity 4 under the action of centrifugal force and the impact force of the grinding body 3. Step 4: Some of the material particles entering the receiving cavity 4 directly enter the liquid inside the receiving cavity 4, while the other part of the particles adhere to the inner wall of the outer cylinder 1. The cleaning device 5, driven by the inner cylinder 2, scrapes off the particles adhering to the inner wall of the outer cylinder 1 and they fall into the liquid inside the receiving cavity 4, and are continuously discharged from the outlet 7 along with the liquid.

[0051] In this embodiment, the material entering the ball mill separation device through the feed pipe 6 can be a solid material or a high-temperature liquid material, wherein the particle size of the solid material must be less than 30 mm.

[0052] In some embodiments, when the material is a solid material, a filter device, a connecting pipe and a circulation pump are provided between the discharge port 7 and the feed pipe 6. The filter device is used to filter out the discharged particles. The liquid enters the connecting pipe and, under the action of the circulation pump, enters the inner cylinder 2 again from the feed pipe 6, realizing the recycling of the liquid, which is suitable for large-scale continuous production.

[0053] It should be noted that the process of pulverizing materials after they are mixed or cooled in the liquid involves shearing the materials in the shearing section of the ball mill separator and then pulverizing them in the pulverizing section. The shearing section and pulverizing section, which achieve the above functions, are existing technologies. Their structure and principle are not the focus of this article and will not be elaborated here.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wet ball milling separation device, characterized in that, include: The outer cylinder (1) is configured as a frustum shape. The outer cylinder (1) is horizontally arranged along the axial direction. The bottom of the end with the largest diameter of the outer cylinder (1) is provided with a discharge port (7). The inner cylinder (2) is cylindrical. One end of the inner cylinder (2) is provided with a feed port, which corresponds to the end of the outer cylinder (1) with the smallest diameter. The grinding body (3) is provided in the inner cylinder (2). The inner cylinder (2) passes through the outer cylinder (1) axially and is coaxially rotatably connected to the outer cylinder (1). A receiving cavity (4) is formed between the outer side wall of the inner cylinder (2) and the inner side wall of the outer cylinder (1). Multiple through holes (21) are provided on the outer side wall of the inner cylinder (2). The through holes (21) and the discharge port (7) are all connected to the receiving cavity (4). A cleaning device (5) is disposed on the outer side wall of the inner cylinder (2) located in the outer cylinder (1), and the cleaning device (5) is able to contact the inner side wall of the outer cylinder (1) when the inner cylinder (2) rotates; A drive mechanism is connected to the inner cylinder (2) for driving the inner cylinder (2) to rotate around an axis.

2. The wet ball milling separation equipment according to claim 1, characterized in that, The feed inlet is located at the center of the end of the inner cylinder (2), and a feed pipe (6) is provided at the feed inlet, which is rotatably connected to the feed inlet.

3. The wet ball milling separation equipment according to claim 1, characterized in that, The cleaning device (5) includes a spiral connector (51) and a plurality of scraper blades (52). The spiral connector (51) is arranged on the outer side wall of the inner cylinder (2) along a spiral trajectory, and the distance between the spiral connector (51) at each position and the inner side wall of the outer cylinder (1) is consistent. The plurality of scraper blades (52) are arranged on the spiral connector (51) along a spiral trajectory.

4. The wet ball milling separation equipment according to claim 3, characterized in that, The scraper blade (52) is positioned at the highest and lowest points of the outer cylinder (1) on each turn of the spiral connector (51). The scraper blade (52) is set with an arc surface (521) on one side of the inner wall of the outer cylinder (1), and the arc surface (521) is in contact with the inner wall of the outer cylinder (1).

5. The wet ball milling separation equipment according to claim 3, characterized in that, The scraper blade (52) includes a first end and a second end. Along the movement direction of the scraper blade (52), the thickness increases from the first end to the second end, and the first end is provided with a sharp corner.

6. The wet ball milling separation equipment according to claim 5, characterized in that, The cross-section of the scraper blade (52) includes an arc and two straight edges. The arc corresponds to the outer cylinder (1). The central angle corresponding to the arc is 5 to 20°, and the length of the straight edge opposite the sharp angle is 6 to 20 mm.

7. The wet ball milling separation equipment according to claim 3, characterized in that, Multiple scraper blades (52) are connected to the side of the spiral connector (51) facing the discharge port (7), and the number of scraper blades (52) is at least twice the number of spiral turns of the spiral connector (51).

8. The wet ball milling separation equipment according to claim 1, characterized in that, The drive mechanism includes: Driven teeth (8) are arranged around the end of the inner cylinder (2); A drive motor (10) is provided with a drive tooth (9) on its output shaft, and the drive tooth (9) meshes with the driven tooth (8) for transmission.

9. The wet ball milling separation equipment according to claim 2, characterized in that, A rotary dynamic sealing structure (11) is provided between the feed pipe (6) and the feed port, and between the outer wall of the inner cylinder (2) and the two ends of the outer cylinder (1).

10. The wet ball milling separation equipment according to claim 3, characterized in that, The distance between the outer side of the spiral connector (51) and the inner sidewall of the outer cylinder (1) is 1 to 5 mm.

11. A wet ball milling separation method, characterized in that, The wet ball milling separation equipment as described in any one of claims 1-10 was used.

12. The wet ball milling separation method according to claim 11, characterized in that, Includes the following steps: Liquid is continuously fed into the inner cylinder (2) from the feed pipe (6), the liquid level in the inner cylinder (2) is controlled, and the liquid is continuously discharged from the outlet (7); After the liquid level is stabilized, the material is fed into the inner cylinder (2) through the feed pipe (6). The material is mixed in the liquid or cooled and then crushed. During the material crushing process, the material particles that reach the target particle size are thrown out from the through hole (21) of the inner cylinder (2) and enter the receiving cavity (4) under the action of centrifugal force and the impact force of the grinding body (3). The material particles entering the containment cavity (4) are divided into two groups. Some of the particles directly enter the liquid inside the containment cavity (4), while the other part of the particles adhere to the inner wall of the outer cylinder (1). The cleaning device (5) scrapes off the particles adhering to the inner wall of the outer cylinder (1) under the action of the inner cylinder (2) and they fall into the liquid inside the containment cavity (4). The liquid is then continuously discharged from the outlet (7).

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