A metal recovery ball mill

Abstract

The utility model discloses a kind of metal recovery ball mill, relate to ball mill technical field.The utility model includes ball mill main body, the ball mill main body includes the grinding cylinder rotationally arranged on support, the grinding cylinder one end is equipped with feed inlet, other end is equipped with discharge port;The grinding cylinder is driven by motor and corresponding drive gear ring cooperation to complete rotation;It further includes screening mechanism, the screening mechanism includes connecting cylinder, filter outer cylinder, filter inner cylinder and discharge cylinder, the connecting cylinder is fixedly connected with the discharge port one end of ball mill main body grinding cylinder.The utility model in the present application, the device can be through two-stage screening cooperation push-pull ring dynamic unblocking, can effectively separate different particle size materials after ball mill grinding, and prevent jamming;Electromagnetic adsorption combines scraper design significantly improves metal recovery rate;Linkage mechanism of multiplex main drive simplifies structure and enhances reliability;Unqualified material is automatically sorted and discharged, reduce equipment investment and operation link, improve processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of ball mill technology, and in particular relates to a metal recycling ball mill. Background Technology

[0002] In the field of metal recycling, ball mills are the core equipment for processing metal-containing waste. Their function is to crush materials using grinding media, separating the metallic and non-metallic components. However, traditional ball mills still have the following problems after grinding: Traditional equipment typically uses a single screen for particle classification. During operation, the screen holes are prone to clogging, and metal particles (especially ferromagnetic materials) are easily discharged and lost along with the waste. Especially when processing industrial waste with complex compositions, the metal separation efficiency is low, often requiring additional subsequent sorting processes.

[0003] Although existing technologies have attempted to introduce magnetic separation devices, they are mostly set up independently at the discharge end. When materials accumulate, their magnetic separation effect on metal materials is not good enough, which can easily lead to limited metal recovery rate. Utility Model Content

[0004] The purpose of this invention is to provide a metal recovery ball mill. In this invention, the device can effectively separate materials of different particle sizes after being ground by the ball mill and prevent blockage through dynamic unblocking by a two-stage screening and push-pull ring. The electromagnetic adsorption combined with the scraper design significantly improves the metal recovery rate. The reuse of the main drive linkage mechanism simplifies the structure and enhances reliability. Unqualified materials are automatically sorted and discharged, reducing equipment investment and operation links, improving processing efficiency, and solving existing technical problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: A metal recycling ball mill, comprising: The ball mill body includes a grinding cylinder rotatably mounted on a support. One end of the grinding cylinder has a feed inlet, and the other end has a discharge outlet. The grinding cylinder is driven to rotate by a motor in cooperation with a drive gear ring. The screening mechanism includes a connecting cylinder, an outer filter cylinder, an inner filter cylinder, and a discharge cylinder. The connecting cylinder is fixedly connected to the discharge port of the grinding cylinder of the ball mill body. The inner filter cylinder is located inside the outer filter cylinder, and both the inner filter cylinder and the outer filter cylinder are fixedly connected to the connecting cylinder. The outer wall of the inner filter cylinder is uniformly provided with a plurality of first filter holes, and the outer wall of the outer filter cylinder is uniformly provided with a plurality of second filter holes. The discharge cylinder is fixedly installed at one end of the outer filter cylinder. A push-pull assembly, comprising an outer push-pull ring disposed within an outer filter cylinder and an inner push-pull ring disposed within an inner filter cylinder, wherein the outer push-pull ring is located outside the inner filter cylinder; The ground material enters the inner filter cylinder through the connecting cylinder. Particles smaller than the first filter hole enter between the outer filter cylinder and the inner filter cylinder, while particles smaller than the second filter hole are discharged. The inner and outer push-pull rings reciprocate to push the material to prevent the screen holes from clogging.

[0006] Optionally, a fixing ring is rotatably sleeved on the outer wall of the connecting cylinder, a support base is fixedly connected to the bottom of the fixing ring, a support plate is fixedly installed on the top of the fixing ring, a first fixing frame is fixedly installed on one side of the support plate, and a second fixing frame is fixedly installed on one side of the first fixing frame.

[0007] Optionally, the push-pull assembly further includes a rotating shaft rotatably mounted in a first fixed frame, one end of the rotating shaft extending into a second fixed frame, a reciprocating lead screw rotatably mounted in the second fixed frame, one end of the reciprocating lead screw being fixedly connected to one end of the rotating shaft; a gear is fixedly sleeved on the outer wall of the rotating shaft, and a gear ring is fixedly sleeved on the outer wall of the filter outer cylinder, the gear ring meshing with the gear; a slider is slidably mounted inside the second fixed frame, and the slider is fixedly connected to a movable sliding sleeve on the outer wall of the reciprocating lead screw.

[0008] Optionally, the push-pull assembly further includes a fixing rod fixedly connected to the inner push-pull ring. Two connecting rods are fixedly installed on the outer wall of the fixing rod. One end of the two connecting rods extends between the outer filter cylinder and the inner filter cylinder and is fixedly connected to the outer wall of the outer push-pull ring. One end of the fixing rod passes through the discharge cylinder. Multiple mounting holes are provided near one end of the fixing rod. A connecting bracket is fixedly installed at the bottom of the slider. An mounting sleeve is fixedly installed at the bottom end of the connecting bracket. The mounting sleeve is fitted onto the outer wall of the fixing rod and is fixedly connected to the multiple mounting holes by bolts.

[0009] Optionally, the screening mechanism further includes a first electromagnetic coil assembly fixedly sleeved on the outer wall of the filter inner cylinder and a second electromagnetic coil assembly fixedly sleeved on the outer wall of the discharge cylinder. The first electromagnetic coil assembly adsorbs ferromagnetic particles, and the second electromagnetic coil assembly enhances the capture of metal particles.

[0010] Optionally, a connecting frame is fixedly installed at one end of the second fixed frame. The connecting frame is located at one end of the discharge cylinder. Scrapers are fixedly installed at both ends of the bottom of the connecting frame. Both scrapers slide closely against the arc-shaped inner wall of the discharge cylinder to scrape off the metal material adsorbed on the cylinder wall.

[0011] Optionally, the end of the filter inner cylinder near the discharge cylinder is not covered by the first electromagnetic coil kit, and the adsorbed metal material is pushed to one end of the filter inner cylinder and falls into the discharge cylinder.

[0012] Optionally, the aperture of the plurality of first filter holes is larger than the aperture of the plurality of second filter holes, and medium-sized particles are retained between the outer filter cylinder and the inner filter cylinder and are pushed to the discharge cylinder by subsequent materials for discharge.

[0013] Optionally, when the grinding cylinder rotates, the gear ring drives the rotating shaft, the reciprocating screw controls the slider to move back and forth, and the fixed rod drives the inner push-pull ring and the outer push-pull ring to move synchronously.

[0014] The embodiments of this utility model have the following beneficial effects: In this invention, the ground mixture is screened in two stages through the first filter hole of the inner cylinder and the second filter hole of the outer cylinder, effectively separating particles of different sizes, which facilitates the subsequent secondary grinding of unqualified materials; the synchronous reciprocating motion of the inner and outer push-pull rings can continuously push the retained materials, avoid screen hole blockage, and ensure smooth material flow and screening accuracy. In this invention, the first electromagnetic coil assembly installed on the outer wall of the filter inner cylinder adsorbs ferromagnetic particles in the initial stage of material entry, preventing the loss of fine metal particles; the design of weak magnetic or non-magnetic areas allows the adsorbed metal material to smoothly enter the discharge cylinder. The second electromagnetic coil assembly forms a secondary magnetic field in the discharge cylinder, enhancing the capture of metal particles; the scraper rotates with the discharge cylinder to scrape off the metal material adsorbed on the cylinder wall, achieving directional aggregation, facilitating centralized collection, and reducing the need for manual sorting; In this invention, when the grinding cylinder rotates, the rotating shaft is driven by the gear ring and gear transmission, which in turn drives the reciprocating screw to control the movement of the push-pull ring. This design reuses the main drive source and achieves dynamic unblocking function without additional power. The combination of the fixed ring and the support seat enhances the stability of the screening mechanism and can ensure long-term operational reliability. In this invention, unqualified medium-sized particles are retained in the inner and outer cylinder cavities and are naturally pushed to the end of the discharge cylinder by subsequent materials for discharge, facilitating secondary processing; the entire process is completed in a single machine for crushing, grading, and magnetic separation, which can reduce equipment configuration and material transfer links.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of the disassembled structure of an embodiment of the present utility model; Figure 3 This is a cross-sectional view of a screening mechanism according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the disassembled structure of the screening mechanism according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a push-pull assembly structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the drive section of a push-pull assembly according to an embodiment of the present invention. Figure 7 This is a schematic diagram of the inner push-pull ring and outer push-pull ring structure according to an embodiment of the present invention.

[0018] In the diagram: 1. Ball mill body; 2. Connecting cylinder; 3. Filter outer cylinder; 4. Discharge cylinder; 5. Support base; 6. Fixing ring; 7. Support plate; 8. First fixing frame; 9. Second fixing frame; 10. Filter inner cylinder; 11. First filter hole; 12. Second filter hole; 13. First electromagnetic coil assembly; 14. Second electromagnetic coil assembly; 15. Connecting frame; 16. Scraper; 17. Slider; 18. Connecting bracket; 19. Mounting sleeve; 20. Inner push-pull ring; 21. Outer push-pull ring; 22. Fixing rod; 23. Connecting rod; 24. Mounting hole; 25. Rotating shaft; 26. Gear; 27. Reciprocating screw; 28. Gear ring. Detailed Implementation

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

[0020] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0022] In one embodiment: Please refer to Figure 1-7 As shown, this embodiment provides a ball mill, including a ball mill body 1, a screening mechanism, a push-pull assembly, and related auxiliary components.

[0023] The main body 1 of the ball mill includes a grinding cylinder rotatably mounted on a support. One end of the grinding cylinder has a feed inlet, and the other end has a discharge outlet. Rotation is achieved through a motor and a corresponding drive gear ring.

[0024] In this embodiment, the screening mechanism consists of a connecting cylinder 2, an outer filter cylinder 3, an inner filter cylinder 10, and a discharge cylinder 4. The connecting cylinder 2 is fixedly connected to one end of the discharge port of the grinding cylinder of the ball mill body 1. A fixing ring 6 is rotatably sleeved on the outer wall of the connecting cylinder 2, and a support seat 5 is provided at the bottom of the fixing ring 6. The fixing ring 6 is fixedly connected to the top of the support seat 5. A support plate 7 is fixedly installed on the top of the fixing ring 6, a first fixing frame 8 is fixedly installed on one side of the support plate 7, and a second fixing frame 9 is fixedly installed on one side of the first fixing frame 8.

[0025] In this embodiment, the inner filter cylinder 10 is located inside the outer filter cylinder 3, and both the inner filter cylinder 10 and the outer filter cylinder 3 are fixedly connected to one end of the connecting cylinder 2. A plurality of first filter holes 11 are evenly distributed on the outer wall of the inner filter cylinder 10, and a plurality of second filter holes 12 are evenly distributed on the outer wall of the outer filter cylinder 3. The diameter of the plurality of first filter holes 11 is larger than the diameter of the plurality of second filter holes 12. Meanwhile, the discharge cylinder 4 is fixedly installed at one end of the outer filter cylinder 3 and can be used to discharge the screened material.

[0026] In this embodiment, the push-pull assembly includes an outer push-pull ring 21 and an inner push-pull ring 20 respectively disposed in the outer filter cylinder 3 and the inner filter cylinder 10. The outer push-pull ring 21 is located outside the inner filter cylinder 10, and the inner push-pull ring 20 and the outer push-pull ring 21 are used to push the corresponding metal material to ensure that it fully completes the filtration and screening.

[0027] In this embodiment, the push-pull assembly further includes a rotating shaft 25 rotatably mounted within the first fixed frame 8. One end of the rotating shaft 25 rotatably passes through one side of the first fixed frame 8 and extends into the second fixed frame 9. A reciprocating screw 27 is rotatably mounted within the second fixed frame 9, with one end of the reciprocating screw 27 fixedly connected to one end of the rotating shaft 25. A gear 26 is fixedly sleeved on the outer wall of the rotating shaft 25, and a gear ring 28 is fixedly sleeved on the outer wall of the filter outer cylinder 3. The gear ring 28 meshes with the gear 26, enabling synchronous rotation of the grinding cylinder of the ball mill body 1 and the rotating shaft 25. A slider 17 is slidably mounted inside the second fixed frame 9. The slider 17 is fixedly connected to a movable sliding sleeve disposed on the outer wall of the reciprocating screw 27, allowing the slider 17 to reciprocate along the reciprocating screw 27.

[0028] In this embodiment, the inner push-pull ring 20 is fixedly connected to the fixing rod 22. Two connecting rods 23 are fixedly installed on the outer wall of the fixing rod 22. One end of each connecting rod 23 extends between the outer filter cylinder 3 and the inner filter cylinder 10 and is fixedly connected to the outer wall of the outer push-pull ring 21. One end of the fixing rod 22 passes through the discharge cylinder 4, and multiple mounting holes 24 are opened near one end. A connecting bracket 18 is fixedly installed at the bottom of the slider 17, and a mounting sleeve 19 is fixedly installed at the bottom of the connecting bracket 18. The mounting sleeve 19 is fitted onto the outer wall of the fixing rod 22, and the mounting sleeve 19 is fixedly connected to the fixing rod 22 by bolts engaging with the multiple mounting holes 24.

[0029] This application can be used in the field of ball mill technology, or in other fields applicable to this application.

[0030] In another embodiment: Reference Figure 4 , 5 A metal recycling ball mill, which is applied to the field of ball mill technology; In this embodiment, the screening mechanism also includes a first electromagnetic coil assembly 13 fixedly sleeved on the outer wall of the inner filter cylinder 10 and a second electromagnetic coil assembly 14 fixedly sleeved on the outer wall of the discharge cylinder 4, used for magnetically screening the metal material passing through the inner filter cylinder 10 and the discharge cylinder 4. The end of the inner filter cylinder 10 near the discharge cylinder 4 is not covered by the first electromagnetic coil assembly 13, ensuring that the adsorbed metal material can fall normally into the discharge cylinder 4 after being pushed to one end of the inner filter cylinder 10.

[0031] In this embodiment, a connecting frame 15 is fixedly installed at one end of the second fixing frame 9. The connecting frame 15 is located at one end of the discharge cylinder 4. Scrapers 16 are fixedly installed at both ends of the bottom of the connecting frame 15. Both scrapers 16 are in close contact with and slide against the arc-shaped inner wall of the discharge cylinder 4 to scrape off the metal material that is magnetically attracted and adsorbed on the arc-shaped inner wall of the discharge cylinder 4.

[0032] However, as is well known to those skilled in the art, the working principles and wiring methods of the first electromagnetic coil kit 13, the second electromagnetic coil kit 14, and the motor are all conventional methods or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0033] The usage process and working principle of this utility model technical solution are as follows: After the main body 1 of the ball mill is started, the motor drives the grinding cylinder to rotate around the shaft. The metal-containing material to be processed enters the grinding cylinder through the feed inlet, and the grinding media inside the cylinder crushes the material. The ground mixture flows through the discharge outlet into the connecting cylinder 2.

[0034] The mixture first enters the inner filter cylinder 10. Particles smaller than the size of the first filter hole 11 pass through the holes and enter the cavity between the inner filter cylinder 10 and the outer filter cylinder 3, while larger particles remain in the inner filter cylinder 10. The material entering the cavity continues to move outwards under gravity. Particles smaller than the size of the second filter hole 12 pass through the outer filter cylinder 3 and are discharged under gravity. Users can install a collection container below the outer filter cylinder 3 to collect materials that meet the standards. Medium-sized particles remain in the cavity and can be discharged from one end of the discharge cylinder 4 by the push of subsequent materials. Users can collect the corresponding non-compliant materials for subsequent secondary grinding.

[0035] The inner push-pull ring 20 in the inner filter cylinder 10 and the outer push-pull ring 21 in the outer filter cylinder 3 can be linked by a fixing rod 22. When the grinding cylinder rotates, it drives the gear ring 28 to rotate, and the gear ring 28 drives the gear 26 to make the rotating shaft 25 rotate synchronously. The rotating shaft 25 drives the reciprocating screw 27 to rotate, forcing the slider 17 to move axially back and forth along the second fixed frame 9. The slider 17 drives the mounting sleeve 19 through the connecting bracket 18, so that the fixing rod 22 drives the inner push-pull ring 20 and the outer push-pull ring 21 to move back and forth synchronously. The reciprocating motion of the push-pull rings pushes the retained material through the corresponding filter holes, preventing the screen holes from clogging.

[0036] Meanwhile, the first electromagnetic coil assembly 13 generates a magnetic field on the outer wall of the filter inner cylinder 10 after being energized. When the mixture enters the filter inner cylinder 10, the filter inner cylinder 10 can adsorb ferromagnetic particles in the metal-containing material, which can prevent smaller metal particles from falling out of the first filter hole 11. As the magnetic force of the filter inner cylinder 10 gradually weakens and eventually disappears at the end near the discharge cylinder 4, the inner push-pull ring 20 can push out the metal material adsorbed on the inner wall of the filter inner cylinder 10 and make it fall into the area of ​​the discharge cylinder 4. The second electromagnetic coil assembly 14 forms a secondary magnetic field on the outer wall of the discharge cylinder 4, which can adsorb passing metal particles. At the same time, the scraper 16, fixed to the connecting frame 15, slides close to the inner wall of the discharge cylinder 4, and can scrape up and collect the metal particles adsorbed on the cylinder wall as the discharge cylinder 4 rotates. The user can manually collect the metal material at the corresponding position. Unadsorbed non-metallic particles can be discharged normally from the end of the discharge cylinder 4 for the user to collect and reprocess.

[0037] After use, users can power off and clean the equipment to clean and recycle any untreated waste and metal materials to be recycled.

[0038] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0039] It should be noted that in the description of this specification, descriptions such as "first" and "second" are only used to distinguish the features and do not have any actual order or directional meaning. This application is not limited to this.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A metal recycling ball mill, characterized in that, include: The ball mill body (1) includes a grinding cylinder rotatably mounted on a support. One end of the grinding cylinder has a feed inlet, and the other end has a discharge outlet. The grinding cylinder is driven to rotate by a motor in cooperation with a drive gear ring. The screening mechanism includes a connecting cylinder (2), an outer filter cylinder (3), an inner filter cylinder (10), and a discharge cylinder (4). The connecting cylinder (2) is fixedly connected to the discharge port of the grinding cylinder of the ball mill body (1). The inner filter cylinder (10) is located inside the outer filter cylinder (3), and both the inner filter cylinder (10) and the outer filter cylinder (3) are fixedly connected to the connecting cylinder (2). The outer wall of the inner filter cylinder (10) is uniformly provided with a plurality of first filter holes (11), and the outer wall of the outer filter cylinder (3) is uniformly provided with a plurality of second filter holes (12). The discharge cylinder (4) is fixedly installed at one end of the outer filter cylinder (3). The push-pull assembly includes an outer push-pull ring (21) disposed in the outer filter cylinder (3) and an inner push-pull ring (20) disposed in the inner filter cylinder (10), wherein the outer push-pull ring (21) is located outside the inner filter cylinder (10); The ground material enters the inner filter cylinder (10) through the connecting cylinder (2), particles smaller than the first filter hole (11) enter between the outer filter cylinder (3) and the inner filter cylinder (10), and particles smaller than the second filter hole (12) are discharged. The inner push-pull ring (20) and the outer push-pull ring (21) reciprocate to push the material to prevent the screen holes from clogging.

2. The metal recycling ball mill according to claim 1, characterized in that, The outer wall of the connecting cylinder (2) is rotatably fitted with a fixing ring (6), the bottom of the fixing ring (6) is fixedly connected to a support seat (5), the top of the fixing ring (6) is fixedly installed with a support plate (7), a first fixing frame (8) is fixedly installed on one side of the support plate (7), and a second fixing frame (9) is fixedly installed on one side of the first fixing frame (8).

3. The metal recycling ball mill according to claim 2, characterized in that, The push-pull assembly also includes a rotating shaft (25) rotatably installed in the first fixed frame (8), one end of the rotating shaft (25) extending into the second fixed frame (9), a reciprocating screw (27) rotatably installed in the second fixed frame (9), one end of the reciprocating screw (27) being fixedly connected to one end of the rotating shaft (25); a gear (26) is fixedly sleeved on the outer wall of the rotating shaft (25), and a toothed ring (28) is fixedly sleeved on the outer wall of the filter outer cylinder (3), the toothed ring (28) meshing with the gear (26); a slider (17) is slidably installed inside the second fixed frame (9), and the slider (17) is fixedly connected to the movable sliding sleeve on the outer wall of the reciprocating screw (27).

4. The metal recycling ball mill according to claim 3, characterized in that, The push-pull assembly also includes a fixing rod (22) fixedly connected to the inner push-pull ring (20). Two connecting rods (23) are fixedly installed on the outer wall of the fixing rod (22). One end of the two connecting rods (23) extends between the outer filter cylinder (3) and the inner filter cylinder (10) and is fixedly connected to the outer wall of the outer push-pull ring (21). One end of the fixing rod (22) passes through the discharge cylinder (4). Multiple mounting holes (24) are provided near one end of the fixing rod (22). A connecting bracket (18) is fixedly installed at the bottom of the slider (17). An mounting sleeve (19) is fixedly installed at the bottom of the connecting bracket (18). The mounting sleeve (19) is sleeved on the outer wall of the fixing rod (22). The mounting sleeve (19) is fixedly connected to the multiple mounting holes (24) by bolts.

5. The metal recycling ball mill according to claim 2, characterized in that, The screening mechanism further includes a first electromagnetic coil kit (13) fixedly sleeved on the outer wall of the filter inner cylinder (10) and a second electromagnetic coil kit (14) fixedly sleeved on the outer wall of the discharge cylinder (4). The first electromagnetic coil kit (13) adsorbs ferromagnetic particles, and the second electromagnetic coil kit (14) enhances the capture of metal particles.

6. The metal recycling ball mill according to claim 5, characterized in that, A connecting frame (15) is fixedly installed at one end of the second fixed frame (9). The connecting frame (15) is located at one end of the discharge cylinder (4). Scrapers (16) are fixedly installed at both ends of the bottom of the connecting frame (15). Both scrapers (16) slide close to the arc-shaped inner wall of the discharge cylinder (4) to scrape off the metal material adsorbed on the cylinder wall.

7. The metal recycling ball mill according to claim 5, characterized in that, The end of the filter inner cylinder (10) near the discharge cylinder (4) is not covered by the first electromagnetic coil kit (13). The adsorbed metal material is pushed to one end of the filter inner cylinder (10) and then falls into the discharge cylinder (4).

8. The metal recycling ball mill according to claim 1, characterized in that, The aperture of the plurality of first filter holes (11) is larger than the aperture of the plurality of second filter holes (12). Medium particles are retained between the outer filter cylinder (3) and the inner filter cylinder (10) and are pushed to the discharge cylinder (4) by subsequent materials for discharge.

9. The metal recycling ball mill according to any one of claims 3 to 8, characterized in that, When the grinding cylinder rotates, the gear (26) driven by the gear ring (28) drives the rotating shaft (25), the reciprocating screw (27) controls the slider (17) to move back and forth, and the fixed rod (22) drives the inner push-pull ring (20) and the outer push-pull ring (21) to move synchronously.

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