Magnetic separation mechanism and magnetic foreign matter processing device

Abstract

The utility model discloses a magnetic separation mechanism and a magnetic foreign matter processing device, and relates to the technical field of battery processing equipment, the magnetic separation mechanism comprises a separation box, a first rotating roller and a second rotating roller; the first rotating roller is rotatably arranged in the separation box; the second rotating roller is rotatably arranged in the separation box, a roller gap is formed between the second rotating roller and the first rotating roller, and the roller gap is configured to allow raw materials to penetrate through; at least one of the first rotating roller and the second rotating roller is a magnetic roller, and the magnetic roller is configured to adsorb magnetic foreign matters in the raw materials. According to the technical scheme provided by the utility model, the problem that the separation efficiency of magnetic foreign matters is not high is solved.

Description

Technical Field

[0001] This utility model relates to the field of battery processing equipment technology, and in particular to a magnetic separation mechanism and a magnetic foreign matter treatment device. Background Technology

[0002] In related technologies, magnetic separation equipment typically relies on a simple magnetic roller design to remove magnetic foreign objects, which fails to fully utilize the contact area and contact time between the raw material and the magnetic roller, resulting in low separation efficiency of magnetic foreign objects. Utility Model Content

[0003] In view of the above problems, this application provides a magnetic separation mechanism and a magnetic foreign matter processing device, which aims to solve the problem of low separation efficiency of magnetic foreign matter.

[0004] This application provides a magnetic separation mechanism, including a separation box, a first rotating roller, and a second rotating roller; the first rotating roller is rotatably disposed in the separation box; the second rotating roller is rotatably disposed in the separation box, and a roller gap is formed between the second rotating roller and the first rotating roller, the roller gap being configured to allow raw materials to pass through; at least one of the first rotating roller and the second rotating roller is a magnetic roller, the magnetic roller being configured to adsorb magnetic foreign objects in the raw materials.

[0005] In the technical solution of this application embodiment, the present invention provides a first rotating roller and a second rotating roller inside a separation chamber, with a gap between the first and second rotating rollers, and at least one of the first and second rotating rollers is designed as a magnetic roller. When the raw material enters the separation chamber, it first falls above the gap; then, the friction effect caused by the rotation of the first and second rotating rollers breaks it down. Simultaneously, the rotation of the first and second rotating rollers causes the broken raw material to pass through the gap. During this process, the contact area and contact time between the raw material and the magnetic roller are effectively increased, allowing the magnetic roller to fully adsorb magnetic foreign matter in the raw material, thereby solving the problem of low separation efficiency of magnetic foreign matter.

[0006] In some embodiments, the first rotating roller is a magnetic roller, and the second rotating roller is an auxiliary roller, with the outer diameter of the magnetic roller being larger than that of the auxiliary roller. This design allows for a larger outer diameter of the magnetic roller, resulting in a larger roller surface area and thus a larger adsorption area, which in turn enables better adsorption of magnetic foreign matter in the raw material.

[0007] In some embodiments, the magnetic roller has an upper side and a lower side in the vertical direction, and the auxiliary roller is located above and to the side of the magnetic roller. This design ensures that the area above the gap formed between the magnetic roller and the auxiliary roller is not obstructed by either the magnetic roller or the auxiliary roller, allowing the raw material to fall into the area above the gap when it enters the separation box. At this point, under the magnetic attraction of the magnetic roller, magnetic foreign objects are attracted to the magnetic roller, thereby ensuring that the raw material can undergo effective magnetic separation before falling into the gap.

[0008] In some embodiments, the magnetic separation mechanism further includes an immersion tube disposed within the separation chamber. The roller gap has an upper and lower section in the vertical direction, and the outlet of the immersion tube faces the upper section of the roller gap. This design allows cleaning fluid (which can be clean water or a liquid containing a cleaning agent) to be sprayed upwards from the outlet of the immersion tube onto the roller gap, thereby immersing the raw materials falling above and within the roller gap. This dissolves dust adhering to the raw materials in the cleaning fluid, and the immersion process also disperses agglomerated raw materials, reducing the influence of dust on the adsorption of magnetic foreign matter. This allows magnetic foreign matter to be better adsorbed onto the magnetic roller, improving the separation effect of magnetic foreign matter in the raw materials.

[0009] In some embodiments, the magnetic separation mechanism further includes a rinsing filter table and a washing pipe; the rinsing filter table is located inside the separation chamber and below the roller gap, and is configured to receive the raw material passing through the roller gap; the washing pipe is located inside the separation chamber, with its outlet facing the surface of the rinsing filter table. With this design, after the raw material passes through the roller gap, it falls onto the rinsing filter table below. At this time, a cleaning liquid (which can be clean water or a liquid containing a cleaning agent) is sprayed onto the raw material on the rinsing filter table through the outlet of the washing pipe to clean the raw material on the rinsing filter table. Wastewater generated during rinsing can be discharged below the filter screen on the rinsing filter table, thereby achieving the treatment of magnetic foreign matter and washing of the raw material.

[0010] In some embodiments, the magnetic separation mechanism further includes a wastewater pipe disposed in the separation tank, which is configured to discharge wastewater generated from rinsing the raw materials into the separation tank. This design allows wastewater generated after rinsing the raw materials on the filter table to be discharged below the filter screen and collected in the separation tank. The wastewater pipe is designed to discharge the collected wastewater from the separation tank, thereby achieving automatic wastewater treatment.

[0011] In some embodiments, the magnetic separation mechanism further includes a waste residue guide plate disposed in the separation box. The feed end of the waste residue guide plate contacts the roller surface of the magnetic roller, and the waste residue guide plate is configured to scrape off magnetic foreign objects on the magnetic roller. With this design, after the magnetic roller adsorbs magnetic foreign objects from the raw material during rotation, the waste residue guide plate can promptly scrape off the adsorbed magnetic foreign objects as the roller continues to rotate, thus cleaning the roller surface in a timely manner and enabling the magnetic roller to continuously adsorb magnetic foreign objects from the raw material.

[0012] In some embodiments, the magnetic roller has an upper side and a lower side in the vertical direction, and the feed end of the waste slag guide plate is inclined upward. This design allows the magnetic foreign objects adsorbed on the magnetic roller to be scraped off by the waste slag guide plate. Under gravity, the magnetic foreign objects can automatically fall from the feed end of the waste slag guide plate to the discharge end, thus achieving automatic discharge of the magnetic foreign objects. This prevents the magnetic foreign objects from being re-adsorbed onto the magnetic roller, which would affect the subsequent adsorption effect of the magnetic roller on magnetic foreign objects in the raw materials.

[0013] In some embodiments, the contact angle α is defined as the angle between the waste slag guide plate and the tangent of the magnetic roller surface, satisfying the condition: 15°≤α≤30°. This design allows the waste slag guide plate to fully contact the surface of the magnetic roller, and during the rotation of the magnetic roller, the waste slag guide plate can effectively scrape off magnetic foreign matter adhering to the magnetic roller.

[0014] In some embodiments, a scraper is provided at the feed end of the waste slag guide plate. This design allows the scraper to better fit the surface of the magnetic roller, so that the upper edge of the scraper forms a stable scraping surface on the surface of the magnetic roller, thereby improving the scraping effect on magnetic foreign objects on the surface of the magnetic roller.

[0015] In some embodiments, a waste collection box is provided below the discharge end of the waste guide plate. With this design, after the magnetic foreign objects adsorbed on the magnetic roller are scraped off by the waste guide plate, the magnetic foreign objects can fall into the waste collection box below under the action of gravity, thereby realizing the automatic collection of magnetic foreign objects. The staff only needs to clean the waste collection box periodically.

[0016] This application also provides a magnetic foreign matter handling device, including a particle size screening mechanism and the aforementioned magnetic separation mechanism. The particle size screening mechanism includes a raw material bin, a feeding conveyor, a vibrating screen, and a fine particle guide plate. The feeding conveyor is configured to transport raw materials from the raw material bin to the vibrating screen, the vibrating screen is configured to perform particle size screening on the raw materials, and the fine particle guide plate is configured to receive the fine particles screened out by the vibrating screen. The discharge end of the fine particle guide plate is located above the roller gap to guide the fine particles into the roller gap. With this design, since coarse particles may contain a large amount of foreign matter, the particle size screening mechanism is used to screen the raw materials before magnetic foreign matter separation. Specifically, the raw materials to be processed are stored in a raw material box. The raw materials in the raw material box are transported to the vibrating screen by a feeding conveyor. The vibrating screen then vibrates and screens the raw materials to separate the fine particles into the fine particle guide plate. The fine particle guide plate then transports the fine particles to the magnetic roller of the magnetic separation mechanism. Finally, the magnetic separation mechanism separates the magnetic foreign matter from the raw materials.

[0017] In some embodiments, the feed end of the feeding conveyor is located below the discharge port of the raw material box, and the discharge end of the feeding conveyor is located above the feed port of the vibrating screen; the horizontal height of the discharge end of the feeding conveyor is above the horizontal height of the feed end of the feeding conveyor. This design allows the feeding conveyor to transport raw materials from a low position to a high position, thereby extending the conveying path of the feeding conveyor for the raw materials, and can disperse some of the agglomerated coarse particles during the conveying process.

[0018] In some embodiments, the particle size screening mechanism further includes a coarse particle guide plate and a recycling conveyor; the coarse particle guide plate is configured to receive coarse particles screened by the vibrating screen; the recycling conveyor is configured to transport the coarse particles discharged from the coarse particle guide plate to the raw material bin. With this design, the coarse particles screened by the vibrating screen can be screened into the coarse particle guide plate, then transported to the recycling conveyor, and finally recycled back to the raw material bin. This allows the coarse particles to be re-transported to the vibrating screen for screening after a period of time via a feeding conveyor, thus performing multiple screenings of the raw material and improving the screening effect.

[0019] In some embodiments, the vibrating screener includes a vibrating box and a screen; a feeding conveyor is configured to transport raw materials from a raw material bin to the vibrating box; the screen is inclined inside the vibrating box, the feed end of the coarse particle guide plate is connected to the lower edge of the screen, and the feed end of the fine particle guide plate extends into the vibrating box and is located below the screen. This design utilizes the vibration effect of a screen and a vibrating chamber to screen raw materials by particle size. Qualified fine particles fall through the screen mesh and are collected by a fine particle guide plate below the screen, which then guides them to a magnetic separator. Coarse particles, unable to pass through the screen mesh, are blocked on the screen. Due to the inclined screen design and the vibration of the vibrating chamber, the coarse particles roll down to the lower edge of the screen and enter the coarse particle guide plate connected to the lower edge of the screen. The coarse particles are then guided to a recycling conveyor for recycling. This allows for precise screening of coarse and fine raw materials using a vibrating screen.

[0020] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the magnetic foreign object processing device of this application;

[0023] Figure 2 This is a partial structural schematic diagram of an embodiment of the magnetic foreign object processing device of this application.

[0024] Explanation of icon numbers:

[0025] label name label name 100 Magnetic Foreign Object Handling Device 18 Waste slag guide plate 10 Magnetic separation mechanism 19 Waste collection bin 11 Separation box 20 Particle size screening mechanism 12 First rotating roller 21 Raw material box 12a magnetic roller 22 Feeding conveyor 13 Second rotating roller 23 Vibrating screen 13a auxiliary roller 231 Vibration box a Roll gap 232 sieve 14 impregnation tube 24 Fine particle material guide plate 15 Wash the filter table 25 Coarse Particle Material Guide Plate 16 Wash pipe 26 Recycling conveyor 17 sewage pipe

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0029] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0032] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0033] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0034] Ternary precursors (such as nickel-cobalt-manganese oxides) are key materials in lithium-ion battery manufacturing, and their quality directly affects battery performance and lifespan. During precursor synthesis, some magnetic impurities may be introduced, primarily due to ferromagnetic substances in the production equipment or raw materials. To ensure the purity and performance of the final product, pretreatment of the raw materials to remove magnetic impurities is necessary before the precursors enter the final processing stage. This process involves magnetic separation and material cleaning techniques to ensure the product is not affected by magnetic impurities during production, and is a crucial step in battery material manufacturing.

[0035] In related technologies, magnetic separation equipment typically relies on a simple magnetic roller design to remove magnetic foreign objects, which fails to fully utilize the contact area and contact time between the raw material and the magnetic roller, resulting in low separation efficiency of magnetic foreign objects.

[0036] Based on the above problems, this utility model proposes a magnetic separation mechanism 10, aiming to solve the problem of low separation efficiency of magnetic foreign objects. The following detailed description is provided in conjunction with specific accompanying drawings and embodiments.

[0037] Please see Figure 1 , Figure 2 In one embodiment of the present invention, the magnetic separation mechanism 10 includes a separation box 11, a first rotating roller 12, and a second rotating roller 13; the first rotating roller 12 is rotatably disposed in the separation box 11; the second rotating roller 13 is rotatably disposed in the separation box 11, and a roller gap a is formed between the second rotating roller 13 and the first rotating roller 12, the roller gap a being configured to allow raw materials to pass through; at least one of the first rotating roller 12 and the second rotating roller 13 is a magnetic roller 12a, the magnetic roller 12a being configured to adsorb magnetic foreign matter in the raw materials.

[0038] In this embodiment, the separation box 11 is used to install the first rotating roller 12 and the second rotating roller 13, and to enable the first rotating roller 12 and the second rotating roller 13 to rotate relative to the separation box 11.

[0039] Optionally, a rotating shaft is inserted and fixed at the central axis of both the first rotating roller 12 and the second rotating roller 13. Bearings are fitted at both ends of the rotating shaft, and the bearings are fixed to the separation box 11 with bearing seats, so that the first rotating roller 12 and the second rotating roller 13 are rotatably mounted on the separation box 11. The first rotating roller 12 or the second rotating roller 13, designed as a magnetic roller 12a, is driven by a drive motor. The drive motor is fixedly mounted on the separation box 11 and can be connected to the rotating shaft of the magnetic roller 12a via a coupling to drive the magnetic roller 12a; alternatively, the drive motor can be connected to a reducer, which is used to drive the rotating shaft of the magnetic roller 12a. The reducer is designed to reduce the output speed of the drive motor.

[0040] In this embodiment, at least one of the first rotating roller 12 and the second rotating roller 13 is a magnetic roller 12a. It can be understood that when the first rotating roller 12 is a magnetic roller 12a, the second rotating roller 13 can be an ordinary rotating roller; when the second rotating roller 13 is a magnetic roller 12a, the first rotating roller 12 can be an ordinary rotating roller; of course, both the first rotating roller 12 and the second rotating roller 13 can be magnetic rollers 12a.

[0041] It should be noted that the gap a formed between the first rotating roller 12 and the second rotating roller 13 needs to be slightly larger than the average particle size of the raw material particles, so that the raw material can pass through the gap a while preventing the agglomerated raw material from passing through the gap a. Therefore, the size of the gap a needs to be determined according to the average particle size of the raw material, and no specific limit is made here.

[0042] In practical applications, the rotation directions of the first rotating roller 12 and the second rotating roller 13 can be the same or opposite. Of course, in order to better crush the material through the friction effect brought about by the rotation of the first rotating roller 12 and the second rotating roller 13, the rotation directions of the first rotating roller 12 and the second rotating roller 13 can be opposite.

[0043] In summary, the technical solution of this application embodiment involves a first rotating roller 12 and a second rotating roller 13 within the separation box 11, with a roller gap a between the first rotating roller 12 and the second rotating roller 13. At least one of the first rotating roller 12 and the second rotating roller 13 is designed as a magnetic roller 12a. When the raw material enters the separation box 11, it first falls above the roller gap a. Then, the friction effect caused by the rotation of the first rotating roller 12 and the second rotating roller 13 breaks the material into smaller pieces. Simultaneously, the rotation of the first rotating roller 12 and the second rotating roller 13 causes the broken material to pass through the roller gap a. During this process, the contact area and contact time between the raw material and the magnetic roller 12a are effectively increased, allowing the magnetic roller 12a to fully adsorb magnetic foreign matter in the raw material, thereby solving the problem of low separation efficiency of magnetic foreign matter.

[0044] Please see Figure 2 In one embodiment of this utility model, the first rotating roller 12 is a magnetic roller 12a, the second rotating roller 13 is an auxiliary roller 13a, and the outer diameter of the magnetic roller 12a is larger than the outer diameter of the auxiliary roller 13a.

[0045] In this embodiment, the magnetic roller 12a can be driven by a drive motor, and the auxiliary roller 13a can also be driven by a drive motor. Alternatively, the auxiliary roller 13a can also be a driven roller, which can drive the auxiliary roller 13a to rotate while crushing the material due to the friction caused by the rotation of the magnetic roller 12a. This can reduce the use of drive motors.

[0046] This design allows for a larger outer diameter of the magnetic roller 12a, resulting in a larger roller surface and thus a larger adsorption area, which in turn enables better adsorption of magnetic foreign matter in the raw materials.

[0047] Please see Figure 2 In one embodiment of this utility model, the magnetic roller 12a has an upper side and a lower side in the vertical direction, and the auxiliary roller 13a is located above and to the side of the magnetic roller 12a. It can be understood that the auxiliary roller 13a can be located above and to the left of the magnetic roller 12a, or it can be located above and to the right of the magnetic roller 12a.

[0048] This design ensures that the area above the gap a formed between the magnetic roller 12a and the auxiliary roller 13a is not blocked by the magnetic roller 12a or the auxiliary roller 13a. This allows the raw material to fall into the area above the gap a when it enters the separation box 11. At this time, under the magnetic attraction of the magnetic roller 12a, the magnetic foreign matter is attracted to the magnetic roller 12a, thus ensuring that the raw material can undergo effective magnetic separation before falling into the gap a.

[0049] Please see Figure 1 , Figure 2In one embodiment of the present invention, the magnetic separation mechanism 10 further includes an immersion tube 14, which is disposed in the separation box 11. The roller gap a has an upper and a lower position in the vertical direction, and the outlet of the immersion tube 14 faces the upper position of the roller gap a.

[0050] This design allows cleaning fluid (which can be clean water or a liquid containing cleaning agent) to be sprayed above the roller gap a through the outlet of the immersion pipe 14. This immerses the raw materials falling above and inside the roller gap a, dissolving the dust adhering to the raw materials in the cleaning fluid. At the same time, the immersion process can also disperse the clumps of raw materials, thereby reducing the adsorption effect of dust and clumps on magnetic foreign objects. This allows the magnetic foreign objects to be better adsorbed onto the magnetic roller 12a, improving the separation effect of magnetic foreign objects in the raw materials.

[0051] Optionally, a plurality of nozzles are installed on the immersion tube 14, and the water inlet end of the immersion tube 14 extends to the outside of the separation box 11 to provide cleaning fluid to the immersion tube 14 through the water supply device on the outside. The cleaning fluid is sprayed out from the nozzles of the immersion tube 14 to immerse the raw material falling above and inside the roller gap a.

[0052] Please see Figure 1 , Figure 2 In one embodiment of the present invention, the magnetic separation mechanism 10 further includes a rinsing filter table 15 and a washing pipe 16; the rinsing filter table 15 is disposed in the separation box 11 and located below the roller gap a, and the rinsing filter table 15 is configured to receive the raw material passing through the roller gap a; the washing pipe 16 is disposed in the separation box 11, and the outlet of the washing pipe 16 faces the table surface of the rinsing filter table 15.

[0053] In this embodiment, the rinsing filter table 15 is provided with a filter screen. The rinsing filter table 15 with the filter screen is located in the area below the roller gap a and is used to receive the raw material passing through the roller gap a.

[0054] With this design, the raw material falls onto the washing and filtering table 15 below after passing through the roller gap a. At this time, cleaning liquid (which can be clean water or liquid containing cleaning agent) is sprayed onto the raw material on the washing and filtering table 15 through the outlet of the washing pipe 16 to clean the raw material on the washing and filtering table 15. The wastewater generated during washing can be discharged to the bottom of the filter screen on the washing and filtering table 15 to achieve the treatment of magnetic foreign objects and washing of the raw material.

[0055] Optionally, a number of nozzles are installed on the washing pipe 16, and the water inlet end of the washing pipe 16 extends to the outside of the separation tank 11 so as to provide cleaning fluid to the washing pipe 16 through the water supply equipment on the outside. The cleaning fluid is sprayed out from the nozzles of the washing pipe 16 to rinse the raw materials on the rinsing filter table 15.

[0056] Please see Figure 1, Figure 2 In one embodiment of the present invention, the magnetic separation mechanism 10 further includes a sewage pipe 17, which is disposed in the separation box 11 and is configured to discharge sewage generated from rinsing raw materials into the separation box 11.

[0057] With this design, the wastewater generated after rinsing the raw materials on the rinsing filter table 15 is discharged to the bottom of the filter screen and collected in the separation box 11. The wastewater pipe 17 is designed to discharge the wastewater collected in the separation box 11 into the separation box 11, thereby realizing automatic sewage treatment.

[0058] Optionally, the sewage pipe 17 can be located below the side wall of the separation tank 11, so that the sewage in the separation tank 11 can automatically flow to the sewage pipe 17 without the need for an additional water pump, thus simplifying the structural design.

[0059] Please see Figure 1 , Figure 2 In one embodiment of the present invention, the magnetic separation mechanism 10 further includes a waste slag guide plate 18, which is disposed in the separation box 11. The feed end of the waste slag guide plate 18 contacts the roller surface of the magnetic roller 12a, and the waste slag guide plate 18 is configured to scrape off magnetic foreign objects on the magnetic roller 12a.

[0060] With this design, after the magnetic roller 12a adsorbs magnetic foreign objects in the raw material during rotation, the magnetic foreign objects adsorbed on the magnetic roller 12a can be scraped off in time by the waste slag guide plate 18 as it continues to rotate, so as to clean the roller surface of the magnetic roller 12a in time, so that the magnetic roller 12a can continue to adsorb magnetic foreign objects in the raw material.

[0061] Optionally, the discharge end of the waste slag guide plate 18 extends out of the outside of the separation box 11 to automatically discharge the scraped magnetic foreign matter to the outside of the separation box 11.

[0062] Please see Figure 1 , Figure 2 In one embodiment of this utility model, the magnetic roller 12a has an upper side and a lower side in the vertical direction, and the feed end of the waste slag guide plate 18 is inclined upward. That is, the waste slag guide plate 18 gradually tilts downward from the feed end to the discharge end.

[0063] With this design, after the magnetic foreign matter adsorbed on the magnetic roller 12a is scraped off by the waste slag guide plate 18, the magnetic foreign matter can automatically fall from the feed end of the waste slag guide plate 18 to the discharge end under the action of gravity, so as to realize the automatic discharge of the magnetic foreign matter. This can prevent the magnetic foreign matter from being adsorbed on the magnetic roller 12a again, thus affecting the subsequent adsorption effect of the magnetic roller 12a on the magnetic foreign matter in the raw material.

[0064] Please see Figure 2In one embodiment of this utility model, the angle between the tangent of the waste slag guide plate 18 and the roller surface of the magnetic roller 12a is defined as the contact angle α, which satisfies: 15°≤α≤30°.

[0065] This design, with its angle, allows the waste slag guide plate 18 to fully contact the surface of the magnetic roller 12a, and during the rotation of the magnetic roller 12a, the waste slag guide plate 18 can effectively scrape off the magnetic foreign matter attached to the magnetic roller 12a.

[0066] As some examples, the contact angle α between the waste slag guide plate 18 and the tangent of the roller surface of the magnetic roller 12a can be 15°, 18°, 20°, 23°, 25°, 26°, 27°, 28°, 29°, 30°, etc.

[0067] Please see Figure 2 In one embodiment of this utility model, a scraper is provided at the feed end of the waste slag guide plate 18.

[0068] This design allows the scraper to better fit the surface of the magnetic roller 12a, so that the upper edge of the scraper forms a stable scraping surface on the surface of the magnetic roller 12a, thereby improving the scraping effect on magnetic foreign objects on the surface of the magnetic roller 12a.

[0069] In practical applications, the scraper can be integrally formed on the feed end of the waste slag guide plate 18, or it can be fixedly connected to the feed end of the waste slag guide plate 18 by means of bonding, welding or other methods.

[0070] Please see Figure 1 In one embodiment of this utility model, a waste collection box 19 is provided below the discharge end of the waste slag guide plate 18.

[0071] With this design, after the magnetic foreign objects adsorbed on the magnetic roller 12a are scraped off by the waste slag guide plate 18, the magnetic foreign objects can fall into the waste slag collection box 19 below under the action of gravity, so as to realize the automatic collection of magnetic foreign objects. The staff only need to clean the waste slag collection box 19 periodically.

[0072] Please see Figure 1This utility model also proposes a magnetic foreign matter processing device 100, which includes a magnetic separation mechanism 10 and a particle size screening mechanism 20. The specific structure of the magnetic separation mechanism 10 is as described in the above embodiments. Since this magnetic foreign matter processing device 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. Among them, the particle size screening mechanism 20 includes a raw material box 21, a feeding conveyor 22, a vibrating screener 23, and a fine particle material guide plate 24. The feeding conveyor 22 is configured to transport the raw material from the raw material box 21 to the vibrating screener 23. The vibrating screener 23 is configured to screen the raw material by particle size. The fine particle material guide plate 24 is configured to receive the fine particles screened out by the vibrating screener 23. The discharge end of the fine particle material guide plate 24 is located above the roller gap a to guide the fine particles to the roller gap a.

[0073] In this embodiment, the feed end of the fine particle material guide plate 24 extends into the vibrating screen 23 to receive the fine particles screened out by the vibrating screen 23; the discharge end of the fine particle material guide plate 24 extends into the separation box 11 and is located above the roller gap a.

[0074] Understandably, since coarse particles contain a lot of foreign matter, a particle size screening mechanism 20 is used to screen the raw materials before magnetic foreign matter separation. Specifically, the raw materials to be processed are stored in a raw material box 21, and the raw materials in the raw material box 21 are transported to the vibrating screen 23 by the feeding conveyor 22. Then, the vibrating screen 23 vibrates and screens the raw materials to separate the fine particles into the fine particle guide plate 24. The fine particle guide plate 24 transports the fine particles to the magnetic roller 12a of the magnetic separation mechanism 10, and finally, the magnetic separation mechanism 10 performs magnetic foreign matter separation on the raw materials.

[0075] Optionally, the feed end of the fine particle material guide plate 24 is inclined upward, that is, the fine particle material guide plate 24 gradually tilts downward from the feed end to the discharge end. After the fine particle material guide plate 24 receives the fine particle material, the fine particle material can automatically fall from the feed end of the fine particle material guide plate 24 to the discharge end under the action of gravity, and fall from the discharge end into the roller gap a below.

[0076] Please see Figure 1 In one embodiment of the present invention, the feed end of the feeding conveyor 22 is located below the discharge port of the raw material box 21, and the discharge end of the feeding conveyor 22 is located above the feed port of the vibrating screen 23; the horizontal height of the discharge end of the feeding conveyor 22 is above the horizontal height of the feed end of the feeding conveyor 22.

[0077] This design allows the feeding conveyor 22 to transport raw materials from a low position to a high position, thereby extending the conveying path of the feeding conveyor 22 for the raw materials. During the conveying process, some of the agglomerated coarse particles can be dispersed.

[0078] Optionally, a feeding support frame can be used to support and fix the feeding conveyor 22 below.

[0079] Please see Figure 1 In one embodiment of the present invention, the particle size screening mechanism 20 further includes a coarse particle guide plate 25 and a recycling conveyor 26; the coarse particle guide plate 25 is configured to receive the coarse particles screened out by the vibrating screener 23; the recycling conveyor 26 is configured to transport the coarse particles discharged from the coarse particle guide plate 25 to the raw material box 21.

[0080] In this embodiment, the feed end of the coarse particle guide plate 25 is connected to the side wall of the vibrating screen 23 to receive the coarse particles screened out by the vibrating screen 23; the discharge end of the coarse particle guide plate 25 is located above the recycling conveyor 26 to transport the coarse particles to the feed end of the recycling conveyor 26.

[0081] With this design, the coarse particles screened by the vibrating screener 23 can be screened into the coarse particle guide plate 25, which then transports them to the recycling conveyor 26. The recycling conveyor 26 then returns the coarse particles to the raw material box 21, allowing them to be transported back to the vibrating screener 23 for screening after a period of time via the feeding conveyor 22. This allows for multiple screenings of the raw materials, thereby improving the screening effect.

[0082] Optionally, the feed end of the coarse particle material guide plate 25 is inclined upward, that is, the coarse particle material guide plate 25 gradually tilts downward from the feed end to the discharge end. After the coarse particle material guide plate 25 receives the coarse particle material, the coarse particle material can automatically fall from the feed end of the coarse particle material guide plate 25 to the discharge end under the action of gravity, and then fall from the discharge end to the feed end of the recycling conveyor 26 below.

[0083] Alternatively, a recycling support frame can be used to support and fix the recycling conveyor 26 below.

[0084] Please see Figure 1 In one embodiment of the present invention, the vibrating screening machine 23 includes a vibrating box 231 and a screen 232; the feeding conveyor 22 is configured to transport raw materials from the raw material box 21 to the vibrating box 231; the screen 232 is inclinedly disposed inside the vibrating box 231, the feed end of the coarse particle material guide plate 25 is connected to the lower edge of the screen 232, and the feed end of the fine particle material guide plate 24 extends into the vibrating box 231 and is located below the screen 232.

[0085] This design utilizes the vibration effect of the screen 232 and the vibrating box 231 to screen the raw materials by particle size. Qualified fine particles fall through the mesh of the screen 232 and are collected by the fine particle guide plate 24 below the screen 232. The fine particles are then guided to the magnetic separation mechanism 10 by the fine particle guide plate 24. Coarse particles, which cannot pass through the mesh of the screen 232, are blocked on the screen 232. Due to the inclined setting of the screen 232, the coarse particles can roll down to the lower edge of the screen 232 under the vibration of the vibrating box 231. They then enter the coarse particle guide plate 25 connected to the lower edge of the screen 232 and are guided to the recycling conveyor 26 for recycling. Thus, the vibrating screen 23 can accurately screen the coarse and fine raw materials.

[0086] According to some embodiments of this application, this application provides a magnetic foreign object processing device 100, which can be referred to in conjunction with the following: Figure 1 , Figure 2 The magnetic foreign matter processing device 100 includes a magnetic separation mechanism 10 and a particle size screening mechanism 20;

[0087] The magnetic separation mechanism 10 includes a separation box 11, a magnetic roller 12a, an auxiliary roller 13a, an immersion tube 14, a rinsing filter table 15, a washing pipe 16, a waste slag guide plate 18, and a waste slag collection box 19. The magnetic roller 12a is rotatably disposed inside the separation box 11. The auxiliary roller 13a is rotatably disposed inside the separation box 11, and a roller gap a is formed between the auxiliary roller 13a and the magnetic roller 12a. The outlet of the immersion tube 14 faces upwards from the roller gap a. The rinsing filter table 15 is located below the roller gap a and is used to receive the raw material passing through the roller gap a. The outlet of the washing pipe 16 faces the table surface of the rinsing filter table 15. The feed end of the waste slag guide plate 18 contacts the roller surface of the magnetic roller 12a, and the waste slag guide plate 18 is configured to scrape away magnetic foreign objects on the magnetic roller 12a. The waste slag collection box 19 is located below the discharge end of the waste slag guide plate 18.

[0088] The particle size screening mechanism 20 includes a raw material bin 21, a feeding conveyor 22, a vibrating screen 23, a fine particle guide plate 24, a coarse particle guide plate 25, and a recycling conveyor 26. The feeding conveyor 22 is configured to transport raw materials from the raw material bin 21 to the vibrating screen 23. The vibrating screen 23 is configured to screen the raw materials by particle size. The fine particle guide plate 24 is configured to receive the fine particles screened out by the vibrating screen 23. The discharge end of the fine particle guide plate 24 is located above the roller gap a to discharge the fine particles. To the roller gap a; the coarse particle guide plate 25 is configured to receive the coarse particles screened out by the vibrating screener 23; the recycling conveyor 26 is configured to transport the coarse particles discharged by the coarse particle guide plate 25 to the raw material box 21; the vibrating screener 23 includes a vibrating box 231 and a screen 232, the screen 232 is inclinedly arranged in the vibrating box 231, the feed end of the coarse particle guide plate 25 is connected to the lower edge of the screen 232, and the feed end of the fine particle guide plate 24 extends into the vibrating box 231 and is located below the screen 232.

[0089] The working principle and process of the magnetic foreign object processing device 100 proposed in this utility model are as follows:

[0090] Particle size screening: The raw material to be processed is conveyed from the raw material box 21 to the vibrating screen 23 via the feeding conveyor 22. The inclined screen 232 inside the vibrating screen 23 screens the raw material by particle size under the action of vibration. The smaller fine particles fall through the mesh of the screen 232 and are discharged through the fine particle guide plate 24; the larger coarse particles are discharged by the coarse particle guide plate 25.

[0091] Recycling and reprocessing: Coarse particles are transported back to the raw material bin 21 via recycling conveyor 26 and re-enter the vibrating screen 23 for further screening.

[0092] Magnetic foreign matter separation: Fine particles enter the separation box 11 from the fine particle guide plate 24. Inside the separation box 11, the magnetic roller 12a and the auxiliary roller 13a attract magnetic foreign matter in the raw material to the magnetic roller 12a by rotating.

[0093] Cleaning and filtration: The immersion tube 14 sprays clean water into the roller gap a to perform immersion and washing treatment, reducing the influence of dust on the adsorption of magnetic foreign objects. The flushing filter table 15 below the roller gap a collects the raw material passing through the roller gap a and further flushes and cleans it through the washing tube 16 to complete the final treatment of magnetic foreign objects.

[0094] Waste disposal: Magnetic foreign objects on the magnetic roller 12a are scraped off by the waste guide plate 18 and introduced into the waste collection box 19 for collection.

[0095] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A magnetic separation mechanism, characterized in that, include: Separation box; The first rotating roller is rotatably disposed inside the separation box; A second rotating roller is rotatably disposed within the separation chamber, and a gap is formed between the second rotating roller and the first rotating roller, the gap being configured to allow raw materials to pass through; at least one of the first rotating roller and the second rotating roller is a magnetic roller, the magnetic roller being configured to adsorb magnetic foreign objects in the raw materials.

2. The magnetic separation mechanism as described in claim 1, characterized in that, The first rotating roller is the magnetic roller, and the second rotating roller is an auxiliary roller, wherein the outer diameter of the magnetic roller is larger than the outer diameter of the auxiliary roller.

3. The magnetic separation mechanism as described in claim 2, characterized in that, The magnetic roller has an upper side and a lower side in the vertical direction, and the auxiliary roller is located above and to the side of the magnetic roller.

4. The magnetic separation mechanism as described in any one of claims 1 to 3, characterized in that, The magnetic separation mechanism also includes: An immersion tube is disposed inside the separation box, the roller gap has an upper and a lower section in the vertical direction, and the outlet of the immersion tube faces the upper section of the roller gap.

5. The magnetic separation mechanism as described in any one of claims 1 to 3, characterized in that, The magnetic separation mechanism also includes: A rinsing filter table is disposed inside the separation chamber and located below the roller gap, the rinsing filter table being configured to receive the raw material passing through the roller gap; A washing pipe is located inside the separation box, with the outlet of the washing pipe facing the surface of the rinsing filter table.

6. The magnetic separation mechanism as described in claim 5, characterized in that, The magnetic separation mechanism also includes: A wastewater pipe is provided in the separation tank, and the wastewater pipe is configured to discharge wastewater generated from rinsing raw materials into the separation tank.

7. The magnetic separation mechanism as described in any one of claims 1 to 3, characterized in that, The magnetic separation mechanism also includes: A waste residue guide plate is provided in the separation box. The feed end of the waste residue guide plate is in contact with the roller surface of the magnetic roller. The waste residue guide plate is configured to scrape away magnetic foreign objects on the magnetic roller.

8. The magnetic separation mechanism as described in claim 7, characterized in that, The magnetic roller has an upper side and a lower side in the vertical direction, and the feed end of the waste slag guide plate is inclined upward.

9. The magnetic separation mechanism as described in claim 8, characterized in that, The contact angle α is defined as the angle between the waste slag guide plate and the tangent of the roller surface of the magnetic roller, which satisfies the following condition: 15°≤α≤30°.

10. The magnetic separation mechanism as described in claim 7, characterized in that, The feed end of the waste residue guide plate is equipped with a scraper; And / or, a waste collection box is provided below the discharge end of the waste guide plate.

11. A magnetic foreign object processing device, characterized in that, include: A particle size screening mechanism includes a raw material bin, a feeding conveyor, a vibrating screener, and a fine particle material guide plate. The feeding conveyor is configured to transport raw materials from the raw material bin to the vibrating screener, the vibrating screener is configured to screen the raw materials by particle size, and the fine particle material guide plate is configured to receive the fine particles screened out by the vibrating screener. In the magnetic separation mechanism according to any one of claims 1 to 10, the discharge end of the fine particle material guide plate is located above the roller gap to guide the fine particle material into the roller gap.

12. The magnetic foreign object processing device as described in claim 11, characterized in that, The feeding end of the feeding conveyor is located below the discharge port of the raw material box, and the discharge end of the feeding conveyor is located above the feeding port of the vibrating screen. The discharge end of the feeding conveyor is positioned above the feed end of the feeding conveyor.

13. The magnetic foreign object processing device as described in claim 11, characterized in that, The particle size screening mechanism also includes: The coarse particle material guide plate is configured to receive the coarse particles screened out by the vibrating screener; A recycling conveyor is configured to transport coarse particles discharged from the coarse particle guide plate to the raw material bin.

14. The magnetic foreign object processing device as described in claim 13, characterized in that, The vibrating screening machine includes: A vibrating chamber, wherein the feeding conveyor is configured to transport raw materials from the raw material bin to the vibrating chamber; A screen is inclinedly disposed inside the vibrating box. The feed end of the coarse particle guide plate is connected to the lower edge of the screen, and the feed end of the fine particle guide plate extends into the vibrating box and is located below the screen.

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