Coarse material cutting device for ore feeding box of magnetic separator
By introducing measures such as drive motor shaking screening, automated movement of reset spring, copper sleeve lubrication, anti-impact plate blocking, and limit rod restriction into the coarse cutting device of the magnetic separator feed box, the problem of jamming of raw materials with large particle size was solved, screening efficiency and device stability were improved, and maintenance requirements were reduced.
Patent Information
- Application Number
- CN202520014950.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-05
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-05
AI Technical Summary
In the existing magnetic separator feed box coarsening device, large-sized raw materials are prone to jamming during the screening process, resulting in low screening efficiency, unstable equipment, and high maintenance requirements.
The device employs a drive motor to vibrate the coarse screen bucket, and a return spring to achieve automated reciprocating motion of the coarse screen bucket. Combined with the lubrication of the copper sleeve and graphite rod, the blocking of the anti-impact plate, the restriction of the limit rod, and the use of aluminum alloy material, the stability and durability of the device are improved.
It effectively solves the problem of large-particle-size raw materials getting stuck, improves screening efficiency and equipment stability, reduces maintenance needs, and extends service life.
Smart Images
Figure CN223733262U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of feed box coarsening technology, specifically a feed box coarsening device for a magnetic separator. Background Technology
[0002] Magnetic separators are screening devices used to remove iron powder and other pollutants from recycled powders and granules. They are widely used in resource recycling, timber industry, mining, kiln industry, chemical industry, food industry and other factories. They are suitable for wet magnetic separation of some magnetite, pyrrhotite, roasted ore, ilmenite and other materials, and are also used for iron removal operations of coal, non-metallic minerals, building materials and other materials. They are one of the most widely used and versatile machines in the industry.
[0003] Existing magnetic separator feed box coarsening devices mostly use screens to screen raw materials whose particle size exceeds the allowable range. In order to improve screening efficiency, the coarsening device generally adopts a certain structure to make the screen vibrate, and achieves the purpose of improving screening efficiency by vibrating the screen. During the process, the screen vibrates continuously, but its position is fixed. When it encounters raw material particles of a specific size, the raw material may get stuck on the screen.
[0004] Therefore, this utility model provides a coarse cutting device for the feed box of a magnetic separator. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The magnetic separator feed box coarsening device of this utility model includes a coarsening box, an inlet fixed to the top of the coarsening box, an outlet provided at the bottom of the coarsening box, a coarse material outlet fixed to the side wall of the coarsening box, an effective positioning ring fixed inside the coarsening box, and a fixing rod fixed between the two positioning rings. A first fixing block is rotatably connected to the side wall of the fixing rod. A coarse screening hopper is fixed to the top of the first fixing block, a second fixing block is fixed to the bottom of the coarse screening hopper, and a striking frame is rotatably connected to the second fixing block. A fixing platform is fixed inside the coarsening box, and a drive motor is fixed to the top of the fixing platform. A striking block is provided at the output end of the drive motor. This step achieves the shaking of the coarse screening hopper by setting the drive motor, thereby improving the screening efficiency of the coarse screening hopper. It is beneficial to solve the problem of large-sized coarse materials getting stuck during the screening process, improves the stability and durability of the feed box coarsening device, improves working efficiency, and reduces maintenance requirements.
[0007] Preferably, a fifth fixing block is fixedly connected to the bottom of the coarse screening hopper, and a third fixing block is fixedly connected inside the coarse cutting box. The third fixing block is positioned corresponding to the fifth fixing block. A first return spring is fixedly connected between the fifth fixing block and the third fixing block, and multiple first return springs are arranged in a linear array. This step achieves the automatic reciprocating motion of the coarse screening hopper by setting multiple first return springs at the bottom of the coarse screening hopper to reset it, thereby increasing the shaking range of the coarse screening hopper, which is beneficial to improving the coarse cutting efficiency of the feed box coarse cutting device, shortening the working time, and improving the working efficiency of the magnetic separator.
[0008] Preferably, a copper sleeve is provided between the first fixing block and the fixing rod. The copper sleeve is sized to correspond to the dimensions of the first fixing block and the fixing rod, and two copper sleeves are provided. The surface of the copper sleeve has multiple through holes, and a graphite rod is placed in each of the through holes. A fixing plate is fixed to the end of the copper sleeve, and a bolt is provided between the fixing plate and the first fixing block. This step, by setting the copper sleeve and the graphite rod, lubricates the first fixing block and the fixing rod, reduces the friction coefficient between the components, helps reduce component wear, and extends the service life of the device. At the same time, the fixing plate makes the graphite rod replaceable, providing convenience for device maintenance personnel.
[0009] Preferably, a fourth fixing block is fixedly connected to the inner side wall of the coarse screen box, and the fourth fixing block is positioned corresponding to the feed inlet. An anti-impact plate is rotatably connected to the end of the fourth fixing block. A second return spring is fixedly connected between the anti-impact plate and the coarse screen box, and two second return springs are positioned corresponding to the feed inlet. This step, by setting an anti-impact plate to block larger particles from moving away, helps to avoid heavy objects impacting the surface of the coarse screen hopper, reduces safety hazards, improves safety and the durability of the device, and helps to protect the stability of the device structure.
[0010] Preferably, a fixed protrusion is fixedly connected to the end of the coarse screening hopper, and multiple fixed protrusions are arranged in a linear array. An effective positioning rod is fixedly connected inside the fixed protrusion. A movable groove is opened on the surface of the coarse material inlet, and the movable groove is set to correspond to the size and position of the limiting rod. This step, by setting the limiting rod and opening the movable groove on the surface of the coarse material inlet, restricts the rotation range of the coarse screening hopper, which helps to prevent the coarse screening hopper from tilting, improves the stability of the feed box coarse cutting device, helps to maintain stable operation, and maintain coarse cutting efficiency.
[0011] Preferably, a baffle is fixedly connected inside the cutting box, and the baffle is set at the position corresponding to the fixed platform and the drive motor. This step protects the drive motor by setting the baffle, maintains the working capacity of the drive motor, helps to avoid damage to the drive motor from impact, improves the stability of the feed box cutting device, and reduces maintenance requirements.
[0012] Preferably, the coarse cutting box, inlet, outlet, coarse material outlet, and coarse screening hopper are made of aluminum alloy. This step improves the stability of the device by using aluminum alloy for the coarse cutting box, inlet, outlet, coarse material outlet, and coarse screening hopper, which helps to keep the device clean and reduce the contamination of raw materials.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. The magnetic separator feed box coarsening device of this utility model, by setting a drive motor to realize the shaking of the coarsening bucket, thereby improving the screening efficiency of the coarsening bucket, which helps to solve the problem of jamming of large-sized coarse materials during the screening process, improves the stability and durability of the feed box coarsening device, helps to improve work efficiency and reduce maintenance needs.
[0015] 2. The magnetic separator feed box coarsening device of this utility model resets the coarsening hopper by setting multiple first reset springs at the bottom of the coarsening hopper, thereby realizing the automated reciprocating motion of the coarsening hopper, increasing the shaking range of the coarsening hopper, which is conducive to improving the coarsening efficiency of the feed box coarsening device, shortening the working time, and improving the working efficiency of the magnetic separator. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings.
[0017] Figure 1 This is a perspective view of the present invention;
[0018] Figure 2 This is a schematic diagram of the structure of the cross-section box in this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the copper sleeve in this utility model;
[0020] Figure 4 This is a schematic diagram of the baffle in this utility model.
[0021] In the diagram: 1. Coarse material cutting box; 2. Feed inlet; 3. Discharge outlet; 4. Coarse material outlet; 5. Screening hopper; 6. First fixing block; 7. Fixing rod; 8. Limiting ring; 9. Copper sleeve; 10. Fixing plate; 11. Fixing platform; 12. Drive motor; 13. Impact block; 14. Baffle; 15. Second fixing block; 16. Impact frame; 17. Third fixing block; 18. First return spring; 19. Fourth fixing block; 20. Anti-impact plate; 21. Second return spring; 22. Fifth fixing block; 23. Fixing protrusion; 24. Limiting rod. Detailed Implementation
[0022] 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.
[0023] Specific implementation examples are given below.
[0024] like Figures 1 to 4 As shown in the figure, a coarse feed box cutting device for a magnetic separator according to an embodiment of the present invention includes a coarse feed box 1. A feed inlet 2 is fixedly connected to the top of the coarse feed box 1, a discharge outlet 3 is provided at the bottom of the coarse feed box 1, and a coarse material outlet 4 is fixedly connected to the side wall of the coarse feed box 1. An effective positioning ring 8 is fixedly connected inside the coarse feed box 1, and a fixing rod 7 is fixedly connected between the two positioning rings 8. A first fixing block 6 is rotatably connected to the side wall of the fixing rod 7. A screen coarsening hopper 5 is fixedly connected to the top of the first fixing block 6, and a second fixing block 15 is fixedly connected to the bottom of the screen coarsening hopper 5. The second fixing block 15 can rotate. The coarse cutting box 1 is connected to a striking frame 16. A fixed platform 11 is fixedly connected inside the coarse cutting box 1, and a drive motor 12 is fixedly connected to the top of the fixed platform 11. A striking block 13 is installed at the output end of the drive motor 12. During operation, the operator uses the coarse cutting structure, composed of the screening hopper 5, the second fixed block 15, the striking frame 16, the drive motor 12, and the striking block 13, to achieve the coarse cutting action of the magnetic separator raw material. During the process, the operator can pour the raw material into the coarse cutting box 1 through the feed inlet 2 and drive the drive motor 12 fixed to the top of the fixed platform 11, causing the striking block 13 to strike the material. The striking block 13 rotates, and as it rotates, it impacts the striking frame 16. The stress is then transmitted to the coarse screen hopper 5 via the striking frame 16 and the second fixing block 15. Whenever the coarse screen hopper 5 experiences stress from the drive motor 12, the first fixing block 6, fixed to the bottom of the coarse screen hopper 5, rotates relative to the fixing rod 7. The operator can continuously drive the drive motor 12, causing the striking block 13 to continuously strike the striking frame 16, ultimately achieving continuous shaking of the coarse screen hopper 5. Larger particle sizes will be filtered through this vibration. The coarse screening hopper 5 and coarse material outlet 4 are discharge devices. Raw materials with particle sizes within the predetermined range will be discharged from the discharge outlet 3 at the bottom of the coarse cutting box 1. Two limiting rings 8 fixed to the inner side wall of the coarse cutting box 1 serve to fix the fixing rod 7. This step achieves the shaking of the coarse screening hopper 5 by setting the drive motor 12, thereby improving the screening efficiency of the coarse screening hopper 5. This helps to solve the problem of large-sized coarse materials getting stuck during the screening process, improves the stability and durability of the feed box coarse cutting device, and helps to improve work efficiency and reduce maintenance needs.
[0025] like Figures 2 to 4As shown, a fifth fixing block 22 is fixedly connected to the bottom of the coarse screening hopper 5, and a third fixing block 17 is fixedly connected inside the coarse cutting box 1. The third fixing block 17 is positioned corresponding to the fifth fixing block 22. A first return spring 18 is fixedly connected between the fifth fixing block 22 and the third fixing block 17, and multiple first return springs 18 are arranged in a linear array. During operation, the multiple first return springs 18 fixed between the fifth fixing block 22 and the third fixing block 17 can continuously provide tension to the coarse screening hopper 5 through the third fixing block 17, thereby preventing the end of the coarse screening hopper 5 from contacting the surface of the coarse material inlet 4. Whenever the operator drives the drive... When the impact block 13 impacts the impact frame 16, the coarse material inlet 4 and the coarse material hopper 5 are separated by a distance. The coarse material hopper 5 will move downwards a certain distance until it contacts the coarse material inlet 4. After the inertial force ends, multiple first return springs 18 can reset the coarse material hopper 5 by pulling force. This step achieves the automatic reciprocating motion of the coarse material hopper 5 by setting multiple first return springs 18 at the bottom of the coarse material hopper 5, thereby increasing the shaking range of the coarse material hopper 5, which is conducive to improving the coarse material cutting efficiency of the feed box cutting device, shortening the working time, and improving the working efficiency of the magnetic separator.
[0026] like Figure 3 As shown, a copper sleeve 9 is provided between the first fixing block 6 and the fixing rod 7. The copper sleeve 9 is sized to correspond to the first fixing block 6 and the fixing rod 7. Two copper sleeves 9 are provided correspondingly. Multiple through holes are opened on the surface of the copper sleeve 9, and graphite rods are placed in the through holes. A fixing plate 10 is fixed to the end of the copper sleeve 9, and a bolt is provided between the fixing plate 10 and the first fixing block 6. During operation, whenever the screen hopper 5 rotates, the copper sleeve 9 located between the first fixing block 6 and the fixing rod 7 can reduce the friction coefficient between the components by itself. During the process, the through holes on the surface of the copper sleeve 9... Multiple graphite rods can coat the surface of the fixing rod 7 with graphite powder through friction, thereby reducing the coefficient of friction. Workers can periodically remove the bolts between the fixing plate 10 and the first fixing block 6 to remove the copper sleeve 9 and replace the graphite rods. This step, by setting the copper sleeve 9 and graphite rods to lubricate the first fixing block 6 and the fixing rod 7, reduces the coefficient of friction between components, which helps to reduce component wear and extend the service life of the device. At the same time, the fixing plate 10 enables the replacement of graphite rods, providing convenience for device maintenance personnel.
[0027] like Figure 4As shown, a fourth fixing block 19 is fixedly connected to the inner wall of the roughing box 1, and the fourth fixing block 19 is positioned corresponding to the feed inlet 2. An anti-impact plate 20 is rotatably connected to the end of the fourth fixing block 19. A second return spring 21 is fixedly connected between the anti-impact plate 20 and the roughing box 1, and the two second return springs 21 are positioned corresponding to the feed inlet 2. During operation, whenever the worker pours raw material into the feed inlet 2, the anti-impact plate 20 at the bottom of the feed inlet 2 will block the raw material once, supported by the fourth fixing block 19. During this process, each... When the anti-impact plate 20 is impacted by a large-diameter raw material, the anti-impact plate 20 will stretch the second return spring 21, thereby causing it to rotate at a certain angle. After the large-diameter raw material leaves the anti-impact plate 20, the second return spring 21, which is fixed between the anti-impact plate 20 and the coarse screen box 1, can return the anti-impact plate 20 to its original position through tension. This step, by setting the anti-impact plate 20 to block the large-diameter raw material from moving away, helps to avoid heavy objects impacting the surface of the coarse screen hopper 5, reduces safety hazards, improves safety and the durability of the device, and helps to protect the stability of the device structure.
[0028] like Figures 2 to 4 As shown, a fixed protrusion 23 is fixedly connected to the end of the coarse screening hopper 5, and multiple fixed protrusions 23 are arranged in a linear array. An effective positioning rod 24 is fixedly connected inside the fixed protrusion 23. A movable groove is opened on the surface of the coarse material inlet 4, and the movable groove is set to correspond to the size and position of the limiting rod 24. During operation, whenever the coarse screening hopper 5 reciprocates under the action of the drive motor 12, the multiple limiting rods 24 fixed to the end of the coarse screening hopper 5 will move within the movable groove opened on the surface of the coarse material inlet 4. The fixed protrusion 23 serves to fix the limiting rod 24. This step, by setting the limiting rod 24 and opening the movable groove on the surface of the coarse material inlet 4, limits the rotation range of the coarse screening hopper 5, which helps to prevent the coarse screening hopper 5 from tilting, improves the stability of the feed box coarse cutting device, helps to maintain stable operation, and maintain coarse cutting efficiency.
[0029] like Figure 4 As shown, a baffle 14 is fixedly connected inside the coarse cutting box 1, and the baffle 14 is set at the positions corresponding to the fixed platform 11 and the drive motor 12. During operation, whenever the raw material falls to the bottom of the coarse cutting box 1 through the coarse screening hopper 5, the baffle 14 fixed inside the coarse cutting box 1 can block the raw material by itself, avoiding the raw material from impacting the fixed platform 11 and the drive motor 12. This step protects the drive motor 12 by setting the baffle 14, maintains the working capacity of the drive motor 12, helps to avoid damage to the drive motor 12 from impact, improves the stability of the feed box coarse cutting device, and reduces maintenance requirements.
[0030] like Figure 1As shown, the coarse cutting box 1, inlet 2, outlet 3, coarse material outlet 4, and coarse screening hopper 5 are made of aluminum alloy. During operation, the use of aluminum alloy for the coarse cutting box 1, inlet 2, outlet 3, coarse material outlet 4, and coarse screening hopper 5 can effectively prevent rusting, reduce the total weight of the device while maintaining the structural strength of the device. This step improves the stability of the device by using aluminum alloy for the coarse cutting box 1, inlet 2, outlet 3, coarse material outlet 4, and coarse screening hopper 5, which is conducive to keeping the device clean and reducing the contamination of raw materials.
[0031] During operation, the operator uses a coarsening structure consisting of a coarsening hopper 5, a second fixed block 15, an impact frame 16, a drive motor 12, and an impact block 13 to coarsely cut the raw material in the magnetic separator. The operator pours the raw material into the coarsening box 1 through the feed inlet 2 and drives the drive motor 12, which is fixed to the top of the fixed platform 11, causing the impact block 13 to rotate. As the impact block 13 rotates, it impacts the impact frame 16, and the stress is transmitted to the coarsening hopper 5 via the impact frame 16 and the second fixed block 15. Whenever the coarsening hopper 5 experiences stress from the drive motor 12, the first fixed block 6, fixed to the bottom of the coarsening hopper 5, rotates relative to the fixed rod 7. The operator can continue to drive the drive motor 12, causing the impact block... The continuous impact of the striking frame 16 by the 13th striking block ultimately achieves continuous shaking of the coarse screen hopper 5. Larger particles are discharged from the coarse screen hopper 5 and the coarse material outlet 4, while particles within a predetermined range are discharged from the outlet 3 at the bottom of the coarse cutting box 1. Two limiting rings 8 fixed to the inner wall of the coarse cutting box 1 serve to fix the fixing rod 7. Multiple first return springs 18 fixed between the fifth fixing block 22 and the third fixing block 17 continuously provide tension to the coarse screen hopper 5 through the third fixing block 17, thus preventing the end of the coarse screen hopper 5 from contacting the surface of the coarse material outlet 4. Whenever the operator drives the drive motor 12, causing the striking block 13 to impact the striking frame 16, the coarse screen hopper 5 will move downwards by a certain distance due to the distance between the coarse material outlet 4 and the coarse screen hopper 5. The coarse screen hopper 5 moves until it contacts the coarse material inlet 4. After the inertial force ends, multiple first return springs 18 can return the coarse screen hopper 5 to its original position through tension. Whenever the coarse screen hopper 5 rotates, the copper sleeve 9 set between the first fixed block 6 and the fixed rod 7 can reduce the friction coefficient between the components by itself. During the process, multiple graphite rods located in the through holes on the surface of the copper sleeve 9 can coat the surface of the fixed rod 7 with graphite powder through friction, thereby achieving the effect of reducing the friction coefficient. The operator can periodically remove the bolts set between the fixed plate 10 and the first fixed block 6 to remove the copper sleeve 9 and replace the graphite rods. Whenever the operator pours the raw material into the feed inlet 2, the anti-impact plate 20 set at the bottom of the feed inlet 2 will rely on the fourth fixed plate 18 to return the raw material to its original position. The support of the fixed block 19 blocks the raw material once. During the process, whenever the anti-impact plate 20 is impacted by a larger particle size of raw material, the anti-impact plate 20 will stretch the second return spring 21, and thus rotate at a certain angle. After the larger particle size of raw material leaves the anti-impact plate 20, the second return spring 21, which is fixed between the anti-impact plate 20 and the coarse cutting box 1, can reset the anti-impact plate 20 by tension. Whenever the coarse screening hopper 5 reciprocates under the action of the drive motor 12, the multiple limiting rods 24 fixed to the end of the coarse screening hopper 5 will move in the movable groove opened on the surface of the coarse material inlet 4. Among them, the fixed protrusion 23 serves to fix the limiting rods 24. Whenever the raw material falls from the coarse screening hopper 5 to the bottom of the coarse cutting box 1, the baffle 14 fixed inside the coarse cutting box 1 can block the raw material by itself.To prevent the raw materials from impacting the fixed platform 11 and drive motor 12, the use of aluminum alloy for the coarse material cutting box 1, inlet 2, outlet 3, coarse material outlet 4, and coarse material screening hopper 5 effectively prevents rusting, reducing the overall weight of the device while maintaining its structural strength.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A magnetic separator feedbox tramp device, comprising a tramp box (1), characterized in that: The top of the rough cutting box (1) is fixedly connected with an inlet (2), the bottom of the rough cutting box (1) is provided with an outlet (3), the sidewall of the rough cutting box (1) is fixedly connected with a coarse material port (4), the inside of the rough cutting box (1) is fixedly connected with two limiting rings (8), and the two limiting rings (8) are fixedly connected with a fixing rod (7), the sidewall of the fixing rod (7) is rotatably connected with a first fixing block (6), the top of the first fixing block (6) is fixedly connected with a coarse material sieve hopper (5), the bottom of the coarse material sieve hopper (5) is fixedly connected with a second fixing block (15), and the second fixing block (15) is rotatably connected with a beating frame (16), the inside of the rough cutting box (1) is fixedly connected with a fixing table (11), and the top of the fixing table (11) is fixedly connected with a driving motor (12), and the output end of the driving motor (12) is provided with a beating block (13).
2. A tramp iron removal device for a magnetic separator feed box according to claim 1, characterized in that: The bottom of the coarse material sieve hopper (5) is fixedly connected with a fifth fixing block (22), the inside of the rough cutting box (1) is fixedly connected with a third fixing block (17), and the third fixing block (17) is provided at a position corresponding to the fifth fixing block (22), a first reset spring (18) is fixedly connected between the fifth fixing block (22) and the third fixing block (17), and a plurality of first reset springs (18) are arranged in a linear array.
3. A tramp iron removal device for a magnetic separator feed box according to claim 1, characterized in that: A copper sleeve (9) is arranged between the first fixing block (6) and the fixing rod (7), the copper sleeve (9) is arranged in correspondence with the size of the first fixing block (6) and the fixing rod (7), two copper sleeves (9) are arranged in correspondence, a plurality of through holes are formed in the surface of the copper sleeve (9), and a graphite rod is arranged in the through hole, and a fixing piece (10) is fixedly connected to the end of the copper sleeve (9), and a bolt is arranged between the fixing piece (10) and the first fixing block (6).
4. A tramp iron removal device for a magnetic separator feed box according to claim 1, characterized in that: A fourth fixing block (19) is fixedly connected to the inner sidewall of the rough cutting box (1), and the fourth fixing block (19) is arranged at a position corresponding to the inlet (2), a baffle (20) is rotatably connected to the end of the fourth fixing block (19), and a second reset spring (21) is fixedly connected between the baffle (20) and the rough cutting box (1), and two second reset springs (21) are arranged at positions corresponding to the inlet (2).
5. A tramp iron removal device for a magnetic separator feed box according to claim 1, characterized in that: The end of the coarse material sieve hopper (5) is fixedly connected with a fixing protrusion (23), and a plurality of fixing protrusions (23) are arranged in a linear array, a limiting rod (24) is fixedly connected to the inside of the fixing protrusion (23), and a movable groove is formed in the surface of the coarse material port (4), and the movable groove is arranged in correspondence with the size and position of the limiting rod (24).
6. A tramp iron removal device for a magnetic separator feed box according to claim 1, characterized in that: A baffle (14) is fixedly connected to the inside of the rough cutting box (1), and the baffle (14) is arranged at a position corresponding to the fixing table (11) and the driving motor (12).
7. A tramp iron removal device for a magnetic separator feed box according to claim 1, characterized in that: The rough cutting box (1), the inlet (2), the outlet (3), the coarse material port (4), and the coarse material sieve hopper (5) are made of aluminum alloy.