Material demagnetization device and battery production equipment

Abstract

The present application discloses a material demagnetization device and battery production equipment. A material demagnetization device of an embodiment of the present application includes a feeding mechanism, a storage mechanism, a conveyor belt and a magnetic adsorbent. The feeding mechanism includes a discharge end; the storage mechanism includes a first opening and a second opening; the conveyor belt includes a first conveying section, a first redirecting section and a second conveying section arranged in sequence along the conveying direction of the conveyor belt, at least part of the first conveying section is located at the lower side of the discharge end and is used to receive the material, at least part of the first redirecting section is located at the upper side of the first opening, the second conveying section is located at the lower side of the first conveying section, and at least part of the second conveying section is located at the upper side of the second opening; the conveyor belt moves relative to the magnetic adsorbent, and at least part of the magnetic adsorbent is arranged on the side of the first redirecting section away from the material and is located at the upper side of the first opening. Used to improve the demagnetization effect.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a material demagnetization device and battery production equipment. Background Art

[0002] Batteries have the advantages of high specific energy and high power density, and are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and electric tools, etc.

[0003] The pole pieces in the battery are usually coated with slurry to give them good electrical properties. The slurry is a viscous liquid mixed with multiple materials such as electrode materials, electrolytes, conductive agents, binders, and solvents. Pole piece slurry has a very important influence on the performance of the battery. How to better remove magnetic foreign matter in pole piece slurry or electrode materials has attracted more and more attention from technicians in this field. Utility Model Content

[0004] The present application provides a material demagnetization device and battery production equipment, which can efficiently remove magnetic impurities from materials.

[0005] In the first aspect, the present application provides a material demagnetization device, including a feeding mechanism, a storage mechanism, a conveyor belt and a magnetic adsorbent. The feeding mechanism is used to accommodate materials and includes a discharge end; the storage mechanism includes a first material chamber and a second material chamber, the upper side of the first material chamber has a first opening, and the upper side of the second material chamber has a second opening; the conveyor belt includes a first conveying section, a first redirecting section and a second conveying section arranged in sequence along the conveying direction of the conveyor belt, at least part of the first conveying section is located at the lower side of the discharge end and is used to receive materials, at least part of the first redirecting section is located at the upper side of the first opening, the second conveying section is located at the lower side of the first conveying section, and at least part of the second conveying section is located at the upper side of the second opening; the conveyor belt moves relative to the magnetic adsorbent, and at least part of the magnetic adsorbent is arranged on the side of the first redirecting section away from the material and is located at the upper side of the first opening.

[0006] The material flowing out from the discharge end reaches the first redirecting section via the first conveyor belt, and the magnetic impurities in the material are adsorbed on the conveyor belt by the magnetic adsorbent corresponding to the first redirecting section. The material falls into the first opening by gravity, thereby removing the magnetic impurities in the material, isolating the material from the magnetic adsorbent, avoiding the introduction of new impurities, and realizing automatic cleaning of the conveyor belt. The magnetic adsorbent is arranged in the first redirecting section, which reduces the magnetic impurities from falling into the second opening.

[0007] In some optional embodiments, a connection between the first redirecting section and the second conveying section is located on an upper side of the second opening.

[0008] As the conveyor belt continuously runs along the conveying direction, the magnetic impurities adsorbed on the conveyor belt by the magnetic adsorption component can fall to the second opening due to gravity after passing the first opening. The connection between the first redirecting section and the second conveying section is located on the upper side of the second opening, and the magnetic adsorption component extends to the upper side of the second opening, thereby reducing the probability of the magnetic impurities falling into the first opening.

[0009] In some optional embodiments, the end of the magnetic adsorption member close to the second conveying section along the conveying direction is located on the upper side of the second opening.

[0010] The magnetic adsorption element extends beyond the first opening to the second opening, which can extend the running path of the magnetic impurities along the conveyor belt, thereby reducing the magnetic impurities falling into the first opening.

[0011] In some optional embodiments, the magnetic adsorption member includes a first end and a second end opposite to each other along the conveying direction, the first end is opposite to the first conveying section; the second end is opposite to the first redirecting section, or the second end is opposite to the second conveying section.

[0012] By extending the length of the magnetic adsorption element on the conveyor belt, the adsorption area between the magnetic adsorption element and the material can be increased when the material falls along the first conveying section, thereby improving the removal efficiency of magnetic impurities.

[0013] In some optional embodiments, the magnetic adsorption member includes a plurality of magnetic rollers, the plurality of magnetic rollers are arranged along the conveying direction, the roller surfaces of the magnetic rollers are arranged in contact with the surface of the conveyor belt facing away from the material; at least one magnetic roller is opposite to the first redirecting section. The rolling contact between the magnetic rollers and the conveyor belt can improve the adsorption force of the magnetic impurities and reduce the friction loss between the magnetic rollers and the conveyor belt.

[0014] In some optional embodiments, the magnetic adsorption member includes a magnetic plate, the magnetic plate is arranged in contact with a side of the conveyor belt facing away from the material, the magnetic plate includes an arc segment, the arc segment matches the arc of the first redirecting segment, and at least a part of the arc segment is located on the upper side of the first opening. The magnetic plate has better continuity, a larger adsorption surface for magnetic impurities, and a more stable adsorption effect.

[0015] In some optional embodiments, the conveyor belt further includes a second redirecting section, the second redirecting section connecting the first conveying section and the second conveying section. The first conveying section, the first redirecting section, the second conveying section and the second redirecting section form a circle to realize the circular movement of the conveyor belt.

[0016] In some optional embodiments, the material demagnetization device also includes a driving unit, which includes a power output member and a plurality of rollers. The plurality of rollers are arranged on a belt path of the conveyor belt, and the power output member is configured to transmit the output power to at least one roller to drive the conveyor belt to move along the conveying direction.

[0017] The power output drives the roller to realize the movement of the conveyor belt. The power output can control the rotation speed of the roller, thereby controlling the running speed of the conveyor belt, realizing the regulation of the running speed of the material, so as to better demagnetize the material through the magnetic adsorption part.

[0018] In some optional embodiments, the plurality of rollers include a first roller and a second roller. In the conveying direction, the first conveying section and the second conveying section are both located between the first roller and the second roller, and the first redirecting section is opposite to the second roller. At least part of the magnetic adsorption member is disposed between the second roller and the first redirecting section. The first roller and the second roller are used to realize the cyclic transmission of the conveyor belt, simplify the structure, and reduce the occupied area.

[0019] In some optional embodiments, the magnetic adsorption member includes a plurality of magnetic rollers, at least two of which are disposed between the second roller and the first redirecting section and arranged along the circumference of the second roller. The second roller provides support for the magnetic roller to facilitate stable placement of the magnetic roller.

[0020] In some optional embodiments, the multiple rollers also include a third roller. In the conveying direction, the third roller is arranged between the second roller and the first roller. A portion of the second conveying section is located between the second roller and the third roller and opposite to the second opening, and the other portion is located between the third roller and the first roller.

[0021] By setting the third roller, the conveyor belt can be tensioned to reduce the slippage of the conveyor belt, and the third roller can change the transmission direction of the conveyor belt so that part of the second conveying section is closer to the second opening, thereby improving the accuracy of magnetic impurities falling into the second opening.

[0022] In some optional embodiments, a plurality of protrusions are provided on one side of the conveyor belt that receives the material, and the protrusions can slow down the falling speed of the material, so that the material is fully in contact with the magnetic adsorption element, thereby improving the demagnetization efficiency.

[0023] In some optional embodiments, the material demagnetization device further comprises baffles, which are arranged at least on both sides of the first conveying section along the width direction of the first conveying section to reduce the splashing of the material out of the first conveying section.

[0024] In some optional embodiments, the feeding mechanism includes a third material chamber for accommodating materials, a feeding pipe and a negative pressure power assembly. The third material chamber is provided with a feeding end and a discharging end relatively arranged in a vertical direction. The feeding pipe is connected to the feeding end and the first material chamber. The negative pressure power assembly is arranged at the feeding end for passing the material in the first material chamber into the third material chamber along the feeding pipe.

[0025] When the material needs to be demagnetized multiple times, the material in the first material chamber is re-sucked along the feeding pipe to the third material chamber through the negative pressure power component for repeated demagnetization to improve the purity of the material; and the suction through the negative pressure power component can reduce the doping of other magnetic impurities in the material.

[0026] In a second aspect, the present application provides a battery production equipment, including the above-mentioned material demagnetization device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0028] Figure 1 A schematic diagram of the structure of a material demagnetization device provided in some embodiments of the present application;

[0029] Figure 2 for Figure 1 A front view of a material demagnetization device;

[0030] Figure 3 for Figure 2 A partial schematic diagram of a material demagnetization device;

[0031] Figure 4 for Figure 2 Another partial schematic diagram of a material demagnetization device;

[0032] Figure 5 for Figure 2 Another partial schematic diagram of a material demagnetization device;

[0033] Figure 6 for Figure 2 A schematic diagram of the structure of the magnetic adsorption part and the conveyor belt;

[0034] Figure 7 for Figure 2 Another structural schematic diagram of the magnetic adsorption part and the conveyor belt;

[0035] Figure 8 for Figure 2 A structural schematic diagram of a conveyor belt;

[0036] Fig. 9 for Figure 2 Another structural diagram of the conveyor belt;

[0037] Fig.10 for Figure 2 Another structural schematic diagram of the conveyor belt;

[0038] Fig.11 for Figure 2 Another structural schematic diagram of the conveyor belt.

[0039] In the drawings, the drawings are not necessarily drawn to scale.

[0040] Description of reference numerals:

[0041] 100, magnetic adsorption member; 101, first end; 102, second end; 110, magnetic roller; 111, first magnetic roller; 112, second magnetic roller; 120, magnetic plate; 121, arc segment; 122, first straight segment; 200, conveyor belt; 201, protrusion; 202, baffle; 210, first conveyor segment; 220, first redirecting segment; 230, second conveyor segment; 240, second redirecting segment; 300, feeding mechanism; 301, discharge end; 302, Feed end; 310, third material chamber; 320, feeding pipe; 330, negative pressure power assembly; 400, material storage mechanism; 410, first material chamber; 411, first opening; 412, first material delivery pipe; 420, second material chamber; 421, second opening; 422, second material delivery pipe; 500, driving unit; 510, power output member; 520, roller; 521, first roller; 522, second roller; 523, third roller; Z, vertical direction; X, first direction. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0044] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0045] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0047] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0048] The term “plurality” used in this application refers to two or more (including two).

[0049] At present, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0050] In the production process of batteries, it is necessary to coat the electrode with an active material layer through a coating device. The active material layer usually exists in the form of a flowable slurry before coating. The slurry is a viscous liquid mixed with multiple materials such as positive and negative electrode materials, electrolytes, conductive agents, binders, and solvents. It is an important raw material for making core components of batteries. In positive electrode slurry, the active material is usually lithium cobalt oxide, lithium manganese oxide, ternary materials, or lithium iron phosphate; in negative electrode slurry, the active material is usually graphite or silicon carbon. In addition, the slurry needs to be demagnetized before the coating process. The demagnetization can be performed on the positive and negative electrode materials or on the mixed slurry. Demagnetization can reduce the presence of magnetic impurities in the slurry, reduce the possibility of electrode materials and other process materials being contaminated by magnetic impurities, improve the quality and purity of the coating slurry, and improve the stability and safety of the battery manufacturing process.

[0051] The current demagnetization device uses the permanent magnetism of the magnetic bar or the electromagnetic property of the magnetic medium net to demagnetize the material by passing the material through the magnetic bar or the magnetic medium net. However, the collision and wear of the magnetic medium net will make it a source of magnetic impurities. The magnetic bar absorbs magnetic impurities and needs to be shut down and cleaned regularly. After the magnetic bar absorbs a lot of magnetic impurities, its demagnetization effect is significantly reduced, affecting the demagnetization efficiency.

[0052] Therefore, how to improve the demagnetization efficiency and effect of coating slurry is an important issue in battery production and processing.

[0053] In view of this, the present application provides a material demagnetization device, which transports the material from a loading mechanism to a storage mechanism through a conveyor belt, and arranges a magnetic adsorption component on the side of the conveyor belt facing away from the material, so that during the transportation of the material on the conveyor belt, the magnetic impurities in the material are adsorbed onto the conveyor belt by the magnetic adsorption component, and the material falls into the storage mechanism by gravity, thereby removing the magnetic impurities, avoiding direct contact between the magnetic adsorption component and the material, and improving the demagnetization efficiency.

[0054] The material demagnetization device provided in the embodiment of the present application can be used for demagnetization of electrode materials, and can also be used for demagnetization of other materials. For example, mineral powders, chemical raw material powders, food additive powders, pharmaceutical raw material powders, etc. Taking pharmaceutical raw material powders as an example, the material demagnetization device of the present application can demagnetize traditional Chinese medicine powders and chemical medicine raw material powders. Magnetic impurities may be mixed into traditional Chinese medicine powders during the preparation and processing process, such as in the grinding and crushing links. These impurities may affect the efficacy of traditional Chinese medicines and fail to meet the standards in drug quality testing. If the chemical medicine raw material powder contains magnetic impurities, it may interfere with the chemical synthesis process of the drug or affect the uniformity and stability of the drug during the preparation process.

[0055] Below, the embodiments of the present application are described in detail.

[0056] Figure 1 A schematic diagram of the structure of a material demagnetization device provided in some embodiments of the present application; Figure 2 for Figure 1 A front view of a material demagnetization device; Figure 3 for Figure 2 A partial schematic diagram of a material demagnetization device.

[0057] like Figures 1 to 3As shown, the present application provides a material demagnetization device, comprising: a feeding mechanism 300, a storage mechanism 400, a conveyor belt 200 and a magnetic adsorption member 100, the feeding mechanism 300 is used to accommodate materials and includes a discharge end 301; the storage mechanism 400 includes a first material cavity 410 and a second material cavity 420, the upper side of the first material cavity 410 has a first opening 411, and the upper side of the second material cavity 420 has a second opening 421; the conveyor belt 200 includes a first conveying section 210, a first redirecting section 220 sequentially arranged along the conveying direction of the conveyor belt 200 and the second conveying section 230, at least part of the first conveying section 210 is located at the lower side of the discharge end 301 and is used to receive the material, at least part of the first redirecting section 220 is located at the upper side of the first opening 411, the second conveying section 230 is located at the lower side of the first conveying section 210, and at least part of the second conveying section 230 is located at the upper side of the second opening 421; the conveyor belt 200 moves relative to the magnetic adsorption component 100, and at least part of the magnetic adsorption component 100 is arranged on the side of the first redirecting section 220 away from the material and is located on the upper side of the first opening 411.

[0058] The feeding mechanism 300 is a device for accommodating materials to be freed of magnetic impurities. Exemplarily, the feeding mechanism 300 includes a feeding end 302 and a discharging end 301 , wherein the feeding end 302 can be used to pour materials into the feeding mechanism 300 , and the discharging end 301 is used to discharge materials from the feeding mechanism 300 .

[0059] As an example, the material is a powder material including a battery electrode material and magnetic impurities or a battery slurry and a liquid material including magnetic impurities.

[0060] The storage mechanism 400 is a device for accommodating demagnetized materials and magnetic impurities. The material of the storage mechanism 400 can be non-metallic materials to avoid the introduction of magnetic impurities, such as plastics, fiberglass, etc. The storage mechanism 400 can include a box or multiple box structures. In one example, the storage mechanism 400 includes a box, which is divided into a first material chamber 410 and a second material chamber 420 arranged along the first direction X by a partition. The first material chamber 410 and the second material chamber 420 are arranged in sequence along the conveying direction of the conveyor belt 200. The first material chamber 410 is used to hold the demagnetized materials, and the second material chamber 420 is used to hold magnetic impurities. In another example, the storage mechanism 400 includes a first box and a second box arranged along the first direction X, the first box includes a first material chamber 410, the second box includes a second material chamber 420, and the first box and the second box are arranged in close contact or spaced along the conveying direction of the conveyor belt 200. The first box and the second box can be conical, rectangular, cylindrical, etc. The first direction X may be the length direction of the storage mechanism 400 .

[0061] The shape of the first opening 411 of the first cavity 410 may be a rectangular, circular, triangular or other structure. For example, the first cavity 410 is disposed in the first box body, and the area of ​​the first opening 411 may be equal to the area of ​​the upper surface of the first box body or smaller than the area of ​​the upper surface of the first box body. The shape of the second opening 421 of the second cavity 420 may be a rectangular, circular, triangular or other structure. For example, the second cavity 420 is disposed in the second box body, and the area of ​​the second opening 421 may be equal to the area of ​​the upper surface of the second box body or smaller than the area of ​​the upper surface of the second box body. The shapes of the first opening 411 and the second opening 421 may be the same or different, and the areas may be the same or different.

[0062] The conveyor belt 200 is a belt-shaped mechanism for conveying materials from the discharge end 301 to the storage mechanism 400. Exemplarily, the conveyor belt 200 is made of non-metallic material, such as rubber, silicone, nylon, etc. The conveying direction of the conveyor belt 200 can be a clockwise or counterclockwise circulation direction, or a reciprocating direction in one direction. Exemplarily, the conveyor belt 200 can include an annular conveyor chain and a conveying member arranged on the conveyor chain, or the conveyor belt 200 includes an integrated conveying member. In one example, the conveyor belt 200 includes a conveyor chain and a conveying member, and the conveying member is continuously arranged in a partial area of ​​the conveyor chain, and the conveyor chain drives the conveying member to reciprocate between the discharge end 301 and the second opening 421. The conveying member has an inclination with the ground, so that the material falls into the first opening 411 along the conveying member under the action of gravity.

[0063] The conveyor belt 200 includes a first conveying section 210, a first redirecting section 220 and a second conveying section 230. The first conveying section 210 extends from the discharge end 301 to the first opening 411. For example, the first redirecting section 220 is an arc section or a straight section. The material falls into the first opening 411 through the first conveying section 210 and part of the first redirecting section 220. The first redirecting section 220 changes the conveying direction of the conveyor belt 200. The conveying directions of the first conveying section 210 and the second conveying section 230 have an angle. For example, the angle between the conveying direction of the first conveying section 210 and the conveying direction of the second conveying section 230 is 90°, 120°, 150° or 180 degrees. For example, the first conveying section 210 and the second conveying section 230 are straight sections. The first conveying section 210 can be parallel to the ground or have a certain angle.

[0064] At least part of the first conveying section 210 is located below the discharge end 301. Specifically, along the gravity direction, the first conveying section 210 is below the discharge end 301, and one of the upper, middle, and lower parts of the first conveying section 210 along the length direction is opposite to the discharge end 301. In other words, the projection of the discharge end 301 along the gravity direction overlaps with the first conveying section 210.

[0065] At least part of the first redirecting section 220 is located on the upper side of the first opening 411. Specifically, part of the first redirecting section 220 is located on the upper side of the first opening 411 or the entire first redirecting section 220 is located on the upper side of the first opening 411. In other words, the orthographic projection of the first redirecting section 220 onto the first opening 411 at least partially overlaps with the first opening 411.

[0066] The second conveying section 230 is located at the lower side of the first conveying section 210. Specifically, the first conveying section 210 is arranged opposite to the second conveying section 230. In other words, the orthographic projection of the first conveying section 210 to the second conveying section 230 at least partially overlaps with the second conveying section 230.

[0067] At least part of the second conveying section 230 is located on the upper side of the second opening 421. Specifically, part of the second conveying section 230 is located on the upper side of the second opening 421, or the entire second conveying section 230 is located on the upper side of the second opening 421. For example, the part of the second conveying section 230 close to the first redirecting section 220 is located on the upper side of the second opening 421. In other words, the orthographic projection of the second conveying section 230 to the second opening 421 at least partially overlaps with the second opening 421.

[0068] Exemplarily, the conveyor belt 200 includes a first surface and a second surface disposed opposite to each other, and the first conveying section 210 , the first redirecting section 220 , and the second conveying section 230 all have a first surface and a second surface, and the first surface is used for carrying materials.

[0069] The magnetic adsorbent 100 is a structure that has a magnetic adsorption effect on metal. For example, the magnetic adsorbent 100 can be made of a magnet, a rare earth permanent magnetic material, an electromagnetic coil, etc. The magnetic adsorbent 100 can be in the form of a plate or a roller. In one example, the magnetic adsorbent 100 is a magnetic rod.

[0070] The conveyor belt 200 moves relative to the magnetic adsorbent 100, that is, the magnetic adsorbent 100 does not move along the conveying direction of the conveyor belt 200. The magnetic adsorbent 100 is fixed relative to the conveyor belt 200. For example, the magnetic adsorbent 100 can be in contact with the conveyor belt 200 or spaced apart on the side of the conveyor belt 200 away from the material, that is, the magnetic adsorbent 100 is arranged on the side where the second surface is located. For example, the magnetic adsorbent 100 is in sliding contact or rolling contact with the second surface.

[0071] The magnetic adsorption member 100 is at least partially disposed on a side of the first redirecting section 220 facing away from the material. In other words, a projection of the magnetic adsorption member 100 toward the first opening 411 partially overlaps with the first opening 411 .

[0072] The magnetic adsorbent 100 is at least partially located above the first opening 411. The magnetic adsorbent 100 is entirely located above the first opening 411. Alternatively, a portion of the magnetic adsorbent 100 is located above the first opening 411, and a portion of the magnetic adsorbent 100 is located above the second opening 421.

[0073] Exemplarily, the magnetic adsorption component 100 can be set in the first redirecting section 220, or, be set in the first redirecting section 220 and the first conveying section 210, or, be set in the first redirecting section 220 and part of the second conveying section 230, or, be set in the first redirecting section 220, the first conveying section 210 and part of the second conveying section 230.

[0074] After the material flows out from the discharge end 301, it falls to the first conveying section 210, and along the conveying direction, it passes through the first conveying section 210 to reach the first redirecting section 220. The magnetic adsorbent 100 provided in the first redirecting section 220 adsorbs the magnetic impurities in the material in the first redirecting section 220, and the demagnetized material falls into the first opening 411 by gravity. The magnetic impurities in the first redirecting section 220 run along the conveying direction to the position of the non-magnetic adsorbent 100, and fall into the second opening 421 by gravity, so that the magnetic impurities in the material are removed, and the magnetic impurities on the conveyor belt 200 are removed and recovered at the position of the non-magnetic adsorbent 100, so that the conveyor belt 200 is automatically cleaned.

[0075] The material flowing out from the discharge end 301 reaches the first redirecting section 220 via the first conveyor belt 200, and the magnetic impurities in the material are adsorbed on the conveyor belt 200 by the magnetic adsorbent 100 corresponding to the first redirecting section 220, and the material without magnetic impurities falls into the first opening 411 by gravity, thereby removing the magnetic impurities in the material, isolating the material from the magnetic adsorbent 100, avoiding the introduction of new impurities, and realizing automatic cleaning of the conveyor belt 200. The magnetic adsorbent 100 is arranged in the first redirecting section 220, which reduces the magnetic impurities from falling into the second opening 421.

[0076] In some embodiments of the present application, the feeding mechanism 300 may be a structure such as a hopper or a silo having a third material chamber 310, or the feeding mechanism 300 may be a pipeline structure, or the feeding mechanism 300 includes a structure having a third material chamber 310 and a pipeline structure.

[0077] In one embodiment of the present application, the material of the feeding mechanism 300 may be a non-metallic material to avoid the introduction of magnetic impurities, such as plastic, fiberglass, etc.

[0078] In one embodiment of the present application, the feeding mechanism 300 may include a feeding auxiliary structure such as a vibrating screen and a stirring rod. The discharge end 301 and the feed end 302 may be openings opened on a silo or a hopper or ports of a pipeline structure.

[0079] In one embodiment of the present application, the loading mechanism 300 may include one or more third material chambers 310 or pipes. Exemplarily, the multiple third material chambers 310 have multiple discharge ports, and the multiple discharge ports are enclosed by a surrounding plate to form a discharge end 301.

[0080] In some embodiments of the present application, the material storage mechanism 400 further includes a first material delivery pipe 412 and a second material delivery pipe 422, wherein the first material delivery pipe 412 is connected to the first material chamber 410 and is used to discharge the demagnetized material in the first material chamber 410. The first material delivery pipe 412 is arranged at the lower side of the first material chamber 410. A switch valve may be arranged on the first material delivery pipe 412. The second material delivery pipe 422 is connected to the second material chamber 420 and is used to discharge the magnetic impurities in the second material chamber 420. The second material delivery pipe 422 is arranged at the lower side of the second material chamber 420. A switch valve may be arranged on the second material delivery pipe 422.

[0081] Continue to refer Figure 1 and Figure 2 In some optional embodiments, a plurality of protrusions 201 are provided on a side of the conveyor belt 200 that receives the material. In other words, a plurality of protrusions 201 are provided on a first surface of the conveyor belt 200 .

[0082] For example, the plurality of protrusions 201 may be cylindrical, conical, or wavy along the conveying direction. The plurality of protrusions 201 may be discretely arranged on the first surface to increase the resistance of the material, slow down the falling speed of the material in the first conveying section 210, and improve the adsorption efficiency of the magnetic adsorption member 100.

[0083] In one example, the protrusion 201 is made of non-metallic material, which may be the same as or different from the material of the conveyor belt 200. The protrusion 201 may be integrally formed with the conveyor belt 200, or connected and fixed to the conveyor belt 200 by bonding, clamping, or the like.

[0084] The protrusion 201 can slow down the falling speed of the material, so that the material can fully contact with the magnetic adsorption component 100, thereby improving the demagnetization efficiency.

[0085] In other embodiments of the present application, in order to slow down the falling speed of the material in the first conveying section 210, it can be achieved by changing the inclination angle between the first conveying section 210 and the ground. The smaller the inclination angle between the first conveying section 210 and the ground, the slower the falling speed of the material, and the larger the inclination angle between the first conveying section 210 and the ground, the faster the falling speed of the material.

[0086] Continue to refer Figure 1 and Figure 2 In some optional embodiments, the material demagnetization device further includes a baffle 202 , and along the width direction of the first conveying section 210 , the baffle 202 is at least arranged on both sides of the first conveying section 210 .

[0087] Exemplarily, the length of the baffle 202 may be the same as that of the first conveying section 210, or the length of the baffle 202 extends over the first conveying section 210, the first redirecting section 220, and the second conveying section 230. Exemplarily, the baffle 202 may be integrally formed with the conveyor belt 200, and run along the conveying direction with the conveyor belt 200, or the conveyor belt 200 moves relative to the baffle 202. In one example, the material of the baffle 202 is a non-metallic material, which may be the same as or different from the material of the conveyor belt 200. The baffle 202 may be in the shape of a plate, a triangle, a column, etc. In one example, the baffle 202 is formed by stacking and splicing a plurality of cylindrical shapes along the length direction.

[0088] Exemplarily, the baffle 202 and the first conveying section 210 may be coplanar or have an angle therebetween. In one example, the angle between the baffle 202 and the first conveying section 210 is 90 degrees.

[0089] In one example, when the baffle 202 and the conveyor belt 200 are an integrally formed structure, the baffle 202 runs along the conveying direction, and a magnetic adsorption component 100 is provided on a side of the baffle 202 facing away from the material.

[0090] The baffle 202 reduces the splashing of materials out of the first conveying section 210 .

[0091] Continue to refer Figure 2 In some optional embodiments, the feeding mechanism 300 includes a third material chamber 310 for accommodating materials, a feeding pipe 320 and a negative pressure power assembly 330. The third material chamber 310 is relatively provided with a feeding end 302 and a discharging end 301 along the vertical direction Z. The feeding pipe 320 is connected to the feeding end 302 and the first material chamber 410. The negative pressure power assembly 330 is arranged at the feeding end 302, and is used to pass the material of the first material chamber 410 into the third material chamber 310 along the feeding pipe 320.

[0092] The third cavity 310 is a cavity for storing materials that have not been demagnetized. In an example, the third cavity 310 may be formed in a silo or a hopper, and the shape of the third cavity 310 may be a cone with a larger top and a smaller bottom, a prism with a larger top and a smaller bottom, a table with a larger top and a smaller bottom, or the like, which is convenient for materials to be stacked downward.

[0093] The feed end 302 is an end side for materials to enter the third material chamber 310. The feed end 302 can be an opening opened in a silo or a hopper. The discharge end 301 is an end side for materials to flow out of the third chamber. Exemplarily, the feed end 302 can be an opening opened in a silo or a hopper. The discharge end 301 is arranged opposite to the feed end 302 along the vertical direction Z, so that the materials fall to the first conveying section 210 by gravity. The feed end 302 can have one opening or multiple openings, and the discharge end 301 can have one opening or multiple openings.

[0094] The feeding pipe 320 is a pipeline for connecting the feeding end 302 with the first material chamber 410. Exemplarily, the feeding pipe 320 can be composed of one or more pipes. The feeding pipe 320 can be connected to the first material chamber 410 through the first opening 411 or other openings. A switch valve can be provided on the feeding pipe 320 to control the conduction or closing of the feeding pipe 320.

[0095] The negative pressure power assembly 330 is a power device for generating negative pressure suction, for example, a negative pressure blower, a vacuum pump, etc. The negative pressure power assembly 330 re-sucks the material in the first material chamber 410 into the third material chamber 310 through negative pressure, and demagnetizes the material multiple times.

[0096] When the material needs to be demagnetized multiple times, the material in the first material chamber 410 is re-sucked into the third material chamber 310 along the feeding pipe 320 by the negative pressure power component 330 for repeated demagnetization to improve the purity of the material; and the suction by the negative pressure power component 330 can reduce the doping of other magnetic impurities in the material.

[0097] Continue to refer Figure 2 and Figure 3 In some optional embodiments, the conveyor belt 200 further includes a second redirecting section 240 , which connects the first conveying section 210 and the second conveying section 230 .

[0098] Exemplarily, the second redirecting section 240 is arranged along the first conveying section 210 and opposite to the first redirecting section 220, and the second redirecting section 240 is an arc section or a straight section. The second redirecting section 240 makes the first conveying section 210 and the second conveying section 230 have an angle, and the angle ranges from 30 degrees to 150 degrees. Exemplarily, the angle between the first conveying section 210 and the second conveying section 230 at the end of the first redirecting section 220 and the angle at the end of the second redirecting section 240 can be the same or different. For example, the angle between the first conveying section 210 and the second conveying section 230 at the end of the second redirecting section 240 can be 60 degrees, 90 degrees, or 120 degrees.

[0099] In an example, the length of the second redirecting section 240 may be equal to the length of the first redirecting section 220 , or may be different from the length of the first redirecting section 220 .

[0100] The first conveying section 210 , the first redirecting section 220 , the second conveying section 230 and the second redirecting section 240 form a circle to realize the circular movement of the conveyor belt 200 .

[0101] Continue to refer Figure 3 In some optional embodiments, the connection between the first redirecting section 220 and the second conveying section 230 is located on the upper side of the second opening 421 .

[0102] In one example, a connection point between the first redirecting section 220 and the second conveying section 230 is colinear with an edge of the second opening 421 close to the first opening 411 .

[0103] In another example, the orthographic projection of the connection between the first redirecting section 220 and the second conveying section 230 to the second opening 421 is located in the second opening 421. For example, when the magnetic adsorbent 100 is disposed in the first redirecting section 220, the magnetic adsorbent 100 passes over the first opening 411 and reaches the upper side of the second opening 421.

[0104] As the conveyor belt 200 continuously runs along the conveying direction, the magnetic impurities adsorbed on the conveyor belt 200 by the magnetic adsorption component 100 can fall to the second opening 421 due to gravity after passing over the first opening 411. The connection between the first redirecting section 220 and the second conveying section 230 is located on the upper side of the second opening 421, and the magnetic adsorption component 100 extends to the upper side of the second opening 421, thereby reducing the probability of magnetic impurities falling into the first opening 411.

[0105] Figure 4 for Figure 2 Another partial schematic diagram of a material demagnetization device.

[0106] like Figure 4 As shown, in some optional embodiments, the end of the magnetic adsorption member 100 close to the second conveying section 230 along the conveying direction is located on the upper side of the second opening 421.

[0107] In other words, the orthographic projection of the end of the magnetic adsorption member 100 close to the second conveying section 230 along the conveying direction toward the second opening 421 falls within the second opening 421 .

[0108] In one example, the connection between the first redirecting section 220 and the second conveying section 230 is located on the upper side of the second opening 421 , and the end of the magnetic adsorption member 100 close to the second conveying section 230 along the conveying direction is located on the upper side of the second opening 421 .

[0109] In another example, the connection between the first redirecting section 220 and the second conveying section 230 is located on the upper side of the first opening 411 , and the end of the magnetic adsorption member 100 close to the second conveying section 230 along the conveying direction is located on the upper side of the second opening 421 .

[0110] The magnetic adsorption member 100 extends beyond the first opening 411 to the second opening 421 , which can extend the running path of the magnetic impurities along the conveyor belt 200 , thereby reducing the magnetic impurities falling into the first opening 411 .

[0111] Figure 5 for Figure 2 Another partial schematic diagram of a material demagnetization device.

[0112] like Figure 5 As shown, in some optional embodiments, the magnetic adsorption member 100 includes a first end 101 and a second end 102 opposite to each other along the conveying direction, the first end 101 is opposite to the first conveying section 210; the second end 102 is opposite to the first redirecting section 220, or the second end 102 is opposite to the second conveying section 230.

[0113] For example, the magnetic adsorption component 100 can extend from any position of the first conveying section 210 along the conveying direction to the connection between the first redirecting section 220 and the second conveying section 230, or the magnetic adsorption component 100 can extend from the connection between the first conveying section 210 and the second redirecting section 240 along the conveying direction to the middle of the second conveying section 230.

[0114] In one example, when the magnetic adsorbent 100 is a magnetic roller 110, the first end 101 may be the first magnetic roller 110 along the conveying direction, and the second end 102 may be the last magnetic roller 110 along the conveying direction. The magnetic rollers 110 are continuously arranged along the conveying direction.

[0115] In another example, when the magnetic adsorption member 100 is a magnetic plate 120 , the first end 101 may be an end side in the conveying direction, and the second end 102 may be another end side along the conveying direction.

[0116] By extending the length of the magnetic adsorption member 100 on the conveyor belt 200 , the adsorption area between the magnetic adsorption member 100 and the material can be increased when the material falls along the first conveying section 210 , thereby improving the removal efficiency of the magnetic impurities.

[0117] Figure 6 for Figure 2 A structural schematic diagram of the magnetic adsorption component 100 and the conveyor belt 200.

[0118] like Figure 5 and Figure 6 As shown, in some optional embodiments, the magnetic adsorption member 100 includes a plurality of magnetic rollers 110, and the plurality of magnetic rollers 110 are arranged along the conveying direction. The roller surfaces of the magnetic rollers 110 are arranged in contact with the surface of the conveyor belt 200 facing away from the material, and at least one magnetic roller 110 is opposite to the first redirecting section 220.

[0119] Exemplarily, the magnetic roller 110 includes a roller body and a roller shaft, the roller body can rotate around the roller shaft, and the roller body is in rolling contact with the second surface of the conveyor belt 200. In one example, the roller shafts of multiple magnetic rollers 110 can be connected and fixed by a bracket. The surface of the roller body can be coated with a magnetic adsorption material or the roller body is made of a magnetic adsorption material. The diameters of the multiple magnetic rollers 110 can be the same or different.

[0120] At least one magnetic roller 110 is opposite to the first redirecting section 220 . For example, one magnetic roller 110 is opposite to the first redirecting section 220 , or a plurality of magnetic rollers 110 are opposite to the first redirecting section 220 .

[0121] The rolling contact between the magnetic roller 110 and the conveyor belt 200 can improve the adsorption force of magnetic impurities and reduce the friction loss between the magnetic roller 110 and the conveyor belt 200 .

[0122] In one embodiment of the present application, when the magnetic adsorption member 100 is a plurality of magnetic rollers 110, the driving unit 500 includes a plurality of rollers 520, and in the first redirecting section 220, the magnetic rollers 110 may be disposed between the rollers 520 and the conveyor belt 200. For example, the rollers 520 drive the magnetic rollers 110 to rotate, thereby driving the conveyor belt 200 to rotate.

[0123] In another embodiment of the present application, when the magnetic adsorption member 100 is a plurality of magnetic rollers 110, the driving unit 500 includes a plurality of rollers 520. In the first redirecting section 220, the magnetic rollers 110 are in rolling contact with the conveyor belt 200. The first redirecting section 220 is not provided with rollers 520. For example, the second redirecting section 240 is provided with rollers 520.

[0124] Continue to refer Figure 6 In some optional embodiments, at least one magnetic roller 110 is opposite to the first redirecting section 220 .

[0125] Specifically, the plurality of magnetic rollers 110 include a first magnetic roller 111 and a second magnetic roller 112. The first magnetic roller 111 is opposite to the first redirecting section 220, and the second magnetic roller 112 is opposite to the first conveying section 210 or / and the second conveying section 230. One of the first magnetic rollers 111 is opposite to the first redirecting section 220, that is, one first magnetic roller 111 is in contact with the first redirecting section 220 along the transmission direction. Alternatively, two or more of the plurality of first magnetic rollers 111 are in contact with the first redirecting section 220.

[0126] The diameters of the first magnetic roller 111 and the second magnetic roller 112 may be the same or different. In one example, the diameter of the first magnetic roller 111 is larger than that of the second magnetic roller 112 , for example, the diameter of the first magnetic roller 111 is equal to the diameter of the roller 520 .

[0127] The magnetic roller 110 may serve as a transmission structure to contact the first redirecting section 220 , thereby achieving movement of the conveyor belt 200 .

[0128] Figure 7 for Figure 2 Another structural schematic diagram of the magnetic adsorption component 100 and the conveyor belt 200.

[0129] like Figure 7 As shown, in some optional embodiments, the magnetic adsorption member 100 includes a magnetic plate 120, which is arranged in contact with a side of the conveyor belt 200 facing away from the material. The magnetic plate 120 includes an arc segment 121, and the arc segment 121 cooperates with the curvature of the first redirecting segment 220, and at least a portion of the arc segment 121 is located on the upper side of the first opening 411.

[0130] The magnetic plate 120 may be coated with a magnetic adsorption material on the surface in contact with the conveyor belt 200 or the magnetic plate 120 is a magnetic adsorption material. The magnetic plate 120 includes an arc segment 121, which matches the curvature of the first redirecting segment 220 and is in sliding contact with the conveyor belt 200.

[0131] At least part of the arc segment 121 is located on the upper side of the first opening 411. For example, part of the arc segment 121 is located on the upper side of the first opening 411, or the entire arc segment 121 is located on the upper side of the first opening 411. The magnetic plate 120 has better continuity, a larger adsorption surface for magnetic impurities, and a more stable adsorption effect.

[0132] In one embodiment of the present application, the magnetic plate 120 also includes a first straight section 122, which is continuously arranged with the arc section 121. The first straight section 122 can be integrally formed with the arc section 121 or connected by bonding, welding, etc. The first straight section 122 is opposite to the first transmission section.

[0133] In another embodiment of the present application, the magnetic plate 120 also includes a first straight section 122 and a second straight section, and the first straight section 122 and the second straight section are continuously arranged with the arc section 121. The first straight section 122 and the second straight section can be integrally formed with the arc section 121 or connected by bonding, welding, etc. The first straight section 122 is opposite to at least a portion of the first transmission section, and the second straight section is opposite to a portion of the second transmission section 230.

[0134] Figure 8 for Figure 2 A schematic structural diagram of the conveyor belt 200.

[0135] like Figure 8 As shown, in some optional embodiments, the material demagnetization device also includes a driving unit 500, the driving unit 500 includes a power output member 510 and a plurality of rollers 520, the plurality of rollers 520 are arranged on the belt path of the conveyor belt 200, and the power output member 510 is configured to transmit the output power to at least one roller 520 to drive the conveyor belt 200 to move along the conveying direction.

[0136] The driving unit 500 is a device capable of driving the conveyor belt 200 to move in the conveying direction. The power output member 510 may be a motor or a pump, etc. For example, the driving unit 500 drives the conveyor chain to move in the conveying direction or drives the conveyor member to move in the conveying direction.

[0137] Exemplarily, the plurality of rollers 520 include an active roller 520 and a driven roller 520, and the plurality of rollers 520 may include one active roller 520 and a plurality of driven rollers 520. The power output member 510 is connected to the active roller 520, drives the active roller 520 to rotate, the active roller 520 drives the conveyor belt 200 to rotate, and the conveyor belt 200 drives the driven roller 520 to rotate. The contact position between each roller 520 and the conveyor belt 200 may be a redirection section. The forward and reverse rotation of the power output member 510 may realize the change of the transmission direction of the transmission belt.

[0138] In one example, the plurality of rollers 520 include one active roller 520 and one driven roller 520 , or the plurality of rollers 520 include one active roller 520 and two driven rollers 520 .

[0139] The power output component 510 drives the roller 520 to realize the movement of the conveyor belt 200. The power output component 510 can control the rotation speed of the roller 520, thereby controlling the running speed of the conveyor belt 200, and realizing the regulation of the running speed of the material, so as to better demagnetize the material through the magnetic adsorption component 100.

[0140] Fig. 9 for Figure 2 Another structural schematic diagram of the middle conveyor belt 200; Fig.10 for Figure 2 Another structural schematic diagram of the middle conveyor belt 200.

[0141] like Fig. 9 and Fig.10 As shown, in some optional embodiments, the multiple rollers 520 include a first roller 521 and a second roller 522. In the conveying direction, the first conveying section 210 and the second conveying section 230 are both located between the first roller 521 and the second roller 522, and the first redirecting section 220 is opposite to the second roller 522; at least a portion of the magnetic adsorption member 100 is disposed between the second roller 522 and the first redirecting section 220.

[0142] For example, the first roller 521 is an active roller 520, connected to the power output member 510. The second roller 522 is a driven roller 520. The diameters of the first roller 521 and the second roller 522 may be the same or different.

[0143] The first conveying section 210 and the second conveying section 230 are arranged in parallel along the radial direction of the roller 520 and have the same length. The first conveying section 210 is tangent to the normal direction of the first roller 521, and the tangent point between the first conveying section 210 and the first roller 521 is the connection point between the first conveyor belt 200 and the second redirecting section 240. The second conveying section 230 is tangent to the normal direction of the first roller 521, and the tangent point between the second conveying section 230 and the first roller 521 is the connection point between the second conveying section 230 and the second redirecting section 240. Similarly, the first conveying section 210 is tangent to the normal direction of the second roller 522, and the tangent point between the first conveying section 210 and the second roller 522 is the connection point between the first conveyor belt 200 and the first redirecting section 220. The second conveying section 230 is tangent to the normal direction of the second roller 522 , and the tangent point between the second conveying section 230 and the second roller 522 is the connection point between the second conveying section 230 and the first redirecting section 220 .

[0144] In one example, if Fig. 9 As shown, the first conveying section 210 is arranged parallel to the ground. The discharging end 301 is arranged above the first conveying section 210. All materials outputted by the discharging end 301 fall to the first conveying section 210, and run along the conveying direction through the first conveying section 210. The materials fall into the first opening 411 along the first redirecting section 220. In the process of the falling of the materials, the magnetic impurities in the materials are adsorbed on the conveyor belt 200 by the magnetic adsorbent 100 provided in the first redirecting section 220. With the movement of the conveyor belt 200, the magnetic impurities are transferred from the first redirecting section 220 to the second conveying section 230. After losing the adsorption force of the magnetic adsorbent 100, the magnetic impurities fall into the second opening 421 below the second conveying section 230.

[0145] In another example, Fig.10 As shown, the first transmission section 210 is arranged at an angle with the ground. In one example, the first transmission section is at an acute angle with the ground. For example, the first transmission section is at 10 degrees, 30 degrees, or 60 degrees with the ground.

[0146] The first roller 521 and the second roller 522 are used to realize the circulating transmission of the conveyor belt 200, thereby simplifying the structure and reducing the occupied area.

[0147] like Figure 5 As shown, in some embodiments of the present application, the magnetic adsorption member 100 includes a plurality of magnetic rollers 110 , at least two of which are disposed between the second roller 522 and the first redirecting section 220 and arranged along the circumference of the second roller 522 .

[0148] For example, the magnetic roller 110 may be coated with a magnetic adsorption material on the roller surface or made of a magnetic adsorption material.

[0149] Exemplarily, at least two magnetic rollers 110 are arranged along the circumference of the second roller 522. Exemplarily, at least two magnetic rollers 110 are in contact with the second roller 522 along the circumference of the second roller 522 and in contact with the first redirecting section 220. Alternatively, at least two magnetic rollers 110 are in contact with the second roller 522 along the circumference of the second roller 522 and are spaced apart from the first redirecting section 220.

[0150] In one example, the magnetic roller 110 is disposed between the second roller 522 and the first redirecting section 220, and the second roller 522 drives the magnetic roller 110 to rotate, thereby driving the conveyor belt 200 to rotate. Alternatively, the conveyor belt 200 drives the magnetic roller 110 to rotate, and the magnetic roller 110 and the second roller 522 rotate relative to each other.

[0151] The second roller 522 provides support for the magnetic roller, so as to facilitate the stable setting of the magnetic roller.

[0152] Fig.11 for Figure 2 Another structural schematic diagram of the conveyor belt 200.

[0153] like Fig.11 As shown, in some optional embodiments, the multiple rollers 520 also include a third roller 523. In the conveying direction, the third roller 523 is arranged between the second roller 522 and the first roller 521. A portion of the second conveying section 230 is located between the second roller 522 and the third roller 523 and opposite to the second opening 421, and the other portion is located between the third roller 523 and the first roller 521.

[0154] Exemplarily, the diameter and material of the third roller 523 may be the same as or different from those of the first roller 521 and the second roller 522. In one example, the line connecting the centers of the first roller 521, the second roller 522, and the third roller 523 forms a triangle, so that the conveyor belt 200 is arranged in a triangular shape. The third roller 523 is arranged between the first roller 521 and the second roller 522, so that part of the second conveying section 230 is close to the second opening 421, and less magnetic impurities are splashed in the process of falling into the second opening 421.

[0155] In one example, the line connecting the centers of the second roller 522 and the third roller 523 is at an angle or parallel to the ground. The first conveying section 210 is arranged at an angle to the ground.

[0156] That is, the second conveying section 230 includes two second sub-conveying sections and a third redirecting section, one second sub-conveying section is located between the second roller 522 and the third roller 523, and the other second sub-conveying section is located between the third roller 523 and the first roller 521. The third redirecting section is opposite to the third roller 523 and is located between the two second sub-conveying sections.

[0157] Exemplarily, the magnetic adsorbent 100 is arranged opposite to the first conveying section 210 and the first redirecting section 220. The material is outputted from the discharging end 301, and falls along the slope of the first conveying section 210 to the first redirecting section 220, and finally falls into the first opening 411. During the falling process of the material, the magnetic impurities in the material are adsorbed by the magnetic adsorbent 100 to the corresponding conveyor belt 200 of the first conveying section 210 and the first redirecting section 220, and move to the second conveying section 230 with the conveyor belt 200. Since at least part of the second conveying section 230 does not have the magnetic adsorbent 100, the magnetic impurities lose the adsorption force and fall into the second opening 421.

[0158] By setting the third roller 523, the conveyor belt 200 can be tensioned to reduce the slippage of the conveyor belt 200, and the third roller 523 can change the transmission direction of the conveyor belt 200, so that part of the second conveying section 230 is closer to the second opening 421, thereby improving the accuracy of magnetic impurities falling into the second opening 421.

[0159] In a second aspect, the present application provides a battery production equipment, including the above-mentioned material demagnetization device.

[0160] like Figures 1 to 11 As shown, in one embodiment of the present application, the material demagnetization device includes a loading mechanism 300, a storage mechanism 400, a driving unit 500, a baffle 202, a conveyor belt 200 and a magnetic adsorption component 100.

[0161] The material storage mechanism 400 includes a box body, which is divided into a first material chamber 410 and a second material chamber 420 by a partition. The first material chamber 410 and the second material chamber 420 are arranged in sequence along the conveying direction of the conveyor belt 200. The first material chamber 410 is used to hold demagnetized materials, and the second material chamber 420 is used to hold magnetic impurities.

[0162] The feeding mechanism 300 includes a silo for accommodating materials, a feeding pipe 320 and a negative pressure power assembly 330, and the silo has a third material chamber 310. The third material chamber 310 is relatively provided with a feeding end 302 and a discharging end 301 along the vertical direction Z, the feeding pipe 320 is connected to the feeding end 302 and the first material chamber 410, and the negative pressure power assembly 330 is arranged at the feeding end 302, and is used to pass the material of the first material chamber 410 into the third material chamber 310 along the feeding pipe 320.

[0163] The driving unit 500 includes a power output member 510 and a plurality of rollers 520, wherein the plurality of rollers 520 include a first roller 521, a second roller 522 and a third roller 523. The first roller 521 is an active roller 520 connected to the power output member 510, and the second roller 522 and the third roller 523 are both driven rollers. The third roller 523 is disposed between the first roller 521 and the second roller 522.

[0164] The conveyor belt 200 includes a first conveying section 210, a first redirecting section 220, a second conveying section 230, and a second redirecting section 240 which are sequentially arranged along the conveying direction of the conveyor belt 200. The second conveying section 230 includes two second sub-conveying sections and a third redirecting section. The first conveying section 210 and the second conveying section 230 are both located between the first roller 521 and the second roller 522, the first redirecting section 220 is opposite to the second roller 522, and the second redirecting section 240 is opposite to the first roller 521. One second sub-conveying section is located between the second roller 522 and the third roller 523, and another second sub-conveying section is located between the third roller 523 and the first roller 521. The third redirecting section is opposite to the third roller 523 and is located between the two second sub-conveying sections. The first conveying section 210 is at an angle of 60 degrees to the ground, and the line connecting the centers of the second roller 522 and the third roller 523 is parallel to the ground.

[0165] Part of the first conveying section 210 is located at the lower side of the discharge end 301 , the first redirecting section 220 is located at the upper side of the first opening 411 , and the second sub-conveying section connected to the first redirecting section 220 is located at the upper side of the second opening 421 .

[0166] The conveyor belt 200 includes a first surface and a second surface opposite to each other, the first surface is used to receive materials, and a plurality of protrusions 201 are arranged on the first surface of the conveyor belt 200. The plurality of protrusions 201 form a pattern. The conveyor belt 200 is made of non-metallic material.

[0167] The baffles 202 are arranged on both sides of the first conveying section 210 along the width direction of the first conveying section 210. The conveyor belt 200 moves relative to the baffles 202. The angle between the baffles 202 and the first conveying section 210 is 90 degrees.

[0168] The conveyor belt 200 moves relative to the magnetic adsorbent 100. The magnetic adsorbent 100 includes a first end 101 and a second end 102 opposite to each other along the conveying direction, the first end 101 is arranged at the connection between the first conveying section 210 and the second redirecting section 240, and the second end 102 is arranged at the connection between the first redirecting section 220 and the second conveying section 230. The magnetic adsorbent 100 includes a plurality of magnetic rollers 110, the plurality of magnetic rollers 110 are arranged along the conveying direction, and the roller surfaces of the magnetic rollers 110 are arranged in rolling contact with the second surface. In the first redirecting section 220, the magnetic rollers 110 may be arranged between the roller wheel 520 and the conveyor belt 200. A lubricating liquid or a protective structure may be provided on the magnetic rollers 110.

[0169] The material demagnetization device of the embodiment of the present application improves the demagnetization efficiency, and the demagnetization effect of the split type is improved by 5%-50%. The non-metallic conveyor belt 200 eliminates the risk of metal foreign matter generated by the material impacting the metal structural parts. As the conveyor belt 200 runs, automatic demagnetization can be achieved.

[0170] If there is no special description, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution. If there is no special description, all technical features and optional technical features of the present application can be combined with each other to form a new technical solution.

[0171] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A material demagnetization device, characterized in that: include: A feeding mechanism, for receiving materials and including a discharge end; The material storage mechanism comprises a first material cavity and a second material cavity, wherein the upper side of the first material cavity has a first opening, and the upper side of the second material cavity has a second opening; A conveyor belt, comprising a first conveying section, a first redirecting section, and a second conveying section sequentially arranged along a conveying direction of the conveyor belt, wherein at least a portion of the first conveying section is located below the discharge end and is used to receive the material, at least a portion of the first redirecting section is located above the first opening, the second conveying section is located below the first conveying section, and at least a portion of the second conveying section is located above the second opening; A magnetic adsorption member, the conveyor belt moves relative to the magnetic adsorption member, and at least a portion of the magnetic adsorption member is arranged on a side of the first redirecting section away from the material and located on an upper side of the first opening.

2. The material demagnetization device according to claim 1, characterized in that: The connection between the first redirecting section and the second conveying section is located at the upper side of the second opening.

3. The material demagnetization device according to claim 1, characterized in that: The end of the magnetic adsorption member close to the second conveying section along the conveying direction is located on the upper side of the second opening.

4. The material demagnetization device according to claim 1, characterized in that: The magnetic adsorption member comprises a first end and a second end opposite to each other along the conveying direction, wherein the first end is opposite to the first conveying section; The second end is opposite to the first redirecting section, or the second end is opposite to the second conveying section.

5. The material demagnetization device according to claim 1, characterized in that: The magnetic adsorption member includes a plurality of magnetic rollers, the plurality of magnetic rollers are arranged along the conveying direction, and the roller surface of the magnetic roller is arranged in contact with the surface of the conveyor belt away from the material; At least one of the magnetic rollers is opposite to the first redirecting section.

6. The material demagnetization device according to claim 1, characterized in that: The magnetic adsorption component includes a magnetic plate, which is arranged in contact with a side of the conveyor belt facing away from the material. The magnetic plate includes an arc segment, which matches the curvature of the first redirecting segment, and at least part of the arc segment is located on the upper side of the first opening.

7. The material demagnetization device according to claim 1, characterized in that: The conveyor belt also includes a second redirecting section connecting the first conveying section and the second conveying section.

8. The material demagnetization device according to claim 1, characterized in that: The material demagnetization device also includes a driving unit, which includes a power output member and a plurality of rollers. The plurality of rollers are arranged on the belt path of the conveyor belt. The power output member is configured to transmit the output power to at least one of the rollers to drive the conveyor belt to move along the conveying direction.

9. The material demagnetization device according to claim 8, characterized in that: The plurality of rollers include a first roller and a second roller, in the conveying direction, the first conveying section and the second conveying section are both located between the first roller and the second roller, and the first redirecting section is opposite to the second roller; At least a portion of the magnetic adsorption member is disposed between the second roller and the first redirecting section.

10. The material demagnetization device according to claim 9, characterized in that: The magnetic adsorption member includes a plurality of magnetic rollers, at least two of which are disposed between the second roller and the first redirecting section and arranged along the circumference of the second roller.

11. The material demagnetization device according to claim 9, characterized in that: The multiple rollers also include a third roller. In the conveying direction, the third roller is arranged between the second roller and the first roller. A part of the second conveying section is located between the second roller and the third roller and opposite to the second opening, and the other part is located between the third roller and the first roller.

12. The material demagnetization device according to claim 1, characterized in that: A plurality of protrusions are arranged on one side of the conveyor belt that receives the material.

13. The material demagnetization device according to claim 1, characterized in that: The material demagnetization device further includes baffles, which are arranged at least on two sides of the first conveying section along the width direction of the first conveying section.

14. The material demagnetization device according to claim 1, characterized in that: The feeding mechanism includes a third material chamber for accommodating materials, a feeding pipe and a negative pressure power component. The third material chamber is provided with a feeding end and a discharging end opposite to each other in a vertical direction. The feeding pipe is connected to the feeding end and the first material chamber. The negative pressure power component is arranged at the feeding end for passing the material in the first material chamber into the third material chamber along the feeding pipe.

15. A battery production device, characterized in that: A material demagnetization device comprising the material demagnetization device described in any one of claims 1 to 14.

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