Demagnetizing device and demagnetizing equipment

Abstract

The utility model discloses a demagnetizing device and demagnetizing equipment. The demagnetizing device comprises a shell, a bin body and a demagnetizing assembly. The shell is provided with a cavity, a feeding port and a discharging port, wherein the feeding port and the discharging port communicate with the cavity. The bin body is arranged on one side of the discharge port of the shell and comprises a discharge bin and an impurity bin which are separated from each other; the demagnetizing assembly is arranged close to the discharging port and comprises a first rotating roller, a second rotating roller, a first clearing piece making contact with the first rotating roller and a second clearing piece making contact with the second rotating roller, the first rotating roller and the second rotating roller are both magnetic, and the first clearing piece and the second clearing piece are both arranged corresponding to the impurity bin. The magnetic substances are automatically removed and separated, manual intervention is not needed, and the working efficiency and the safety coefficient are improved.

Description

Technical Field

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

[0002] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0003] In the development of battery technology, how to reduce the cost of battery cells is a research direction in battery technology. Utility Model Content

[0004] The embodiments of the present application provide a demagnetization device and a demagnetization equipment, which can reduce the cost of battery cells.

[0005] In the first aspect, an embodiment of the present application provides a demagnetization device, which includes a shell, a bin body and a demagnetization component. The shell is provided with a cavity and a feed port and a discharge port respectively connected to the cavity; the bin body is provided on one side of the discharge port of the shell, and the bin body includes a discharge port and an impurity bin separated from each other; the demagnetization component is provided near the discharge port, and the demagnetization component includes a first rotating roller, a second rotating roller, a first cleaning member respectively in contact with the first rotating roller, and a second cleaning member in contact with the second rotating roller, the first rotating roller and the second rotating roller are both magnetic, and the first cleaning member and the second cleaning member are both provided corresponding to the impurity bin.

[0006] In the above scheme, after the powder enters the cavity in the shell from the feed port, when it passes through the first rotating roller and the second rotating roller, since the first rotating roller and the second rotating roller are both magnetic, the magnetic position in the powder will be adsorbed by the first rotating roller and the second rotating roller, and then the powder follows the rotation of the first rotating roller and the second rotating roller, the first cleaning member removes the magnetic material on the first rotating roller, and the second cleaning member removes the magnetic material on the second rotating roller, and the magnetic material falls into the impurity bin, and the purified powder falls into the discharge bin, thereby realizing automatic removal and separation of magnetic materials without manual intervention, thereby enhancing work efficiency and safety factor.

[0007] In some embodiments, both the first rotating roller and the second rotating roller are permanent magnets.

[0008] In the above solution, compared with the setting of electromagnets, permanent magnets can simplify the structure, reduce power and power consumption, and do not require an additional cooling system for cooling, thereby reducing costs.

[0009] In some embodiments, the demagnetization device also includes a screen assembly located in the cavity, the screen assembly is arranged near the feed port, the screen assembly includes a fixing seat and a screen, the fixing seat is connected to the outer shell; the screen is connected to the fixing seat.

[0010] In the above scheme, the screen can screen and break up the powder, and limit the entry speed of the powder, so that the powder enters evenly between the first rotating roller and the second rotating roller, thereby improving the adsorption effect of the magnetic substance and efficiently separating the magnetic substance; and the screen can also filter out some foreign matter in the powder, thereby improving the purity of the powder.

[0011] In some embodiments, the screen assembly further includes a first driving member connected to the housing, and the first driving member is connected to the fixing seat.

[0012] In the above solution, the first driving member can drive the screen to vibrate, thereby further improving the screening effect of the screen.

[0013] In some embodiments, the demagnetization assembly also includes a material guide plate, which is arranged on the side of the first rotating roller and the second rotating roller close to the feed port; in the direction along the shell pointing to the cavity, the material guide plate is inclined toward the discharge port, so that the material guide plate can guide the powder to the first rotating roller and the second rotating roller, further improving work efficiency.

[0014] In some embodiments, the first rotating roller and the second rotating roller rotate in opposite directions, so that the magnetic substances on the first rotating roller and the second rotating roller can both fall into the impurity bin, thereby facilitating the separation of the magnetic substances in the powder.

[0015] In some embodiments, the impurity bin includes a first impurity sub-bin and a second impurity sub-bin, and the discharge bin is located between the first impurity sub-bin and the second impurity sub-bin; the rotation directions of the first rotating roller and the second rotating roller both point to the discharge bin.

[0016] In the above solution, the magnetic substances can be removed and dropped into the first impurity sub-bin and the second impurity sub-bin located on both sides respectively, and the powder from which the magnetic substances are removed can be dropped into the discharge bin in the middle for easy collection.

[0017] In some embodiments, the first cleaning member includes a first connecting portion, a first cleaning portion and a first elastic portion, wherein the first connecting portion is connected to the housing; the first cleaning portion contacts the first rotating roller; and the first elastic portion is disposed between the first connecting portion and the first cleaning portion.

[0018] In the above solution, the provision of the first elastic portion can avoid excessive force between the first cleaning portion and the first rotating roller to a certain extent, thereby preventing structural damage.

[0019] In some embodiments, the first scraping part is obliquely arranged towards the discharge port in a direction pointing from the shell to the cavity, so as to facilitate scraping more magnetic substances from the first rotating roller and falling into the impurity bin.

[0020] In some embodiments, the magnetic removing assembly further comprises a second driving member and a transmission member, the second driving member is connected with the rotating shaft of the first rotating roller and used to drive the first rotating roller to rotate, and the rotating shaft of the second rotating roller is connected with the rotating shaft of the first rotating roller through the transmission member.

[0021] In the above scheme, the cooperation of the second driving member and the transmission member eliminates the need for arranging one driving member for each of the first rotating roller and the second rotating roller, thus simplifying the structure and reducing the cost.

[0022] In some embodiments, the transmission member comprises a plurality of gears which are sequentially engaged, one of the gears is fixed to the rotating shaft of the first rotating roller, and another gear is fixed to the rotating shaft of the second rotating roller.

[0023] In the above scheme, the cooperation of the second driving member and the transmission member eliminates the need for arranging one driving member for each of the first rotating roller and the second rotating roller, thus simplifying the structure and reducing the cost.

[0024] In some embodiments, in a direction pointing from the inlet port to the discharge port, the inner wall of the discharge bin is obliquely arranged away from the shell, so as to prevent the powder from adhering to the inner wall of the discharge bin to some extent and facilitate the discharge.

[0025] In some embodiments, the magnetic removing device further comprises a first valve, and the first valve is arranged in the impurity bin.

[0026] In the above scheme, the opening or closing of the first valve can control the discharge of the magnetic substances.

[0027] In some embodiments, the magnetic removing device further comprises a second valve, and the second valve is arranged on one side of the first valve close to the discharge port.

[0028] In the above scheme, the second valve can isolate the magnetic removing space from the external environment and control the absorption of moisture.

[0029] In a second aspect, the embodiments of the present application further provide a magnetic removing equipment comprising the magnetic removing device of any of the above embodiments.

[0030] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A schematic structural diagram of a vehicle according to some embodiments of the present application;

[0033] Figure 2 An exploded view of a battery device according to some embodiments of the present application;

[0034] Figure 3 This is a schematic structural diagram of a battery module according to some embodiments of the present application;

[0035] Figure 4 This is a schematic diagram of the exploded structure of a battery cell according to some embodiments of the present application;

[0036] Figure 5 is a schematic cross-sectional view of a demagnetization device according to some embodiments of the present application;

[0037] Figure 6 is a partial structural schematic diagram of a demagnetization device in some embodiments of the present application;

[0038] Figure 7 yes Figure 5 Cross-sectional view along AA direction;

[0039] Figure 8 It is a structural schematic diagram of the demagnetization device of some embodiments of the present application.

[0040] Description of reference numerals:

[0041] 1000, vehicle; 100, battery device; 200, controller; 300, motor; 10, upper cover; 30, housing; 400, battery module; 20, battery cell; 22, housing; 21, end cap; 23, electrode assembly; 500, demagnetization device; 40, housing; 41, feed port; 42, discharge port; 50, bin; 51, discharge bin; 52, impurity bin; 521, first impurity sub-bin; 522, second impurity sub-bin ; 60. Demagnetization assembly; 61. First rotating roller; 62. Second rotating roller; 63. First cleaning member; 631. First connecting portion; 632. First cleaning portion; 633. First elastic portion; 64. Second cleaning member; 65. Material guide plate; 66. Second driving member; 67. Transmission member; 671. Gear; 70. Screen assembly; 71. Fixed seat; 72. Screen; 73. First driving member; 81. First valve; 82. Second valve. DETAILED DESCRIPTION

[0042] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present application, but are not intended to limit the scope of the present application, i.e., the present application is not limited to the described embodiments.

[0043] In the description of this application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0044] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0045] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] In this application, battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, etc., and the embodiments of this application do not limit this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of this application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells, and the embodiments of this application do not limit this.

[0047] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, parallel, or hybrid via a busbar.

[0048] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. For example, the battery cell assembly may be a battery module, which is formed by arranging and securing multiple battery cells to form a single module. For example, a battery module may be formed by bundling multiple battery cells using cable ties.

[0049] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case.

[0050] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0051] As an example, the battery cell assembly may also be housed in the box by directly fixing the plurality of battery cells to the box.

[0052] The present invention provides an electric device that uses a battery as a power source. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0053] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0054] Please refer to Figure 1 , Figure 1 Schematic diagram of the structure of the vehicle provided for some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000. The battery device 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000. For example, the battery device 100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0055] In some embodiments of the present application, the battery device 100 can serve not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0056] Please refer to Figure 2 , Figure 2 Exploded diagram of the device provided in some embodiments of the present application. The battery device 100 includes a battery case and a battery cell 20. In some embodiments, the battery case may include an upper cover 10 and a case 30, the upper cover 10 and the case 30 covering each other, and the upper cover 10 and the case 30 jointly define a receiving cavity for accommodating the battery cell 20. The case 30 may be a hollow structure with one end open, and the upper cover 10 may be a plate-like structure, the upper cover 10 covering the open side of the case 30, so that the upper cover 10 and the case 30 jointly define a receiving cavity; the upper cover 10 and the case 30 may also be hollow structures with one side open, the open side of the upper cover 10 covering the open side of the case 30. Of course, the battery case formed by the upper cover 10 and the case 30 may be in various shapes, such as a cylinder, a cuboid, etc.

[0057] Figure 3 This is a schematic diagram of the structure of the battery module of some embodiments of the present application. In the battery device 100, there can be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box; of course, the battery device 100 can also be a battery module 400 in the form of multiple battery cells 20 first connected in series, in parallel, or in mixed connection, and the multiple battery modules 400 are then connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box. The battery device 100 may also include other structures. For example, the battery device 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0058] Each battery cell 20 may be a secondary battery cell or a primary battery cell; it may also be a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0059] Please refer to Figure 4 , Figure 4 Schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application. A battery cell 20 is the smallest unit that makes up a battery. A battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0060] The end cap 21 is a component that covers the opening of the housing 22 to isolate the internal environment of the battery cell 20 from the external environment. The shape of the end cap 21 can be adapted to the shape of the housing 22 to fit the housing 22. Optionally, the end cap 21 can be made of a material with a certain hardness and strength (such as an aluminum alloy). This prevents the end cap 21 from deforming when subjected to compression or collision, thereby providing the battery cell 20 with greater structural strength and improved safety. Functional components such as electrode terminals 26 can be provided on the end cap 21. The electrode terminals 26 can be used to electrically connect to the electrode assembly 23 to output or input electrical energy to the battery cell 20. In some embodiments, the end cap 21 can also be provided with a pressure relief mechanism for relieving internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The end cap 21 can also be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment of the present application does not impose any specific limitations on this. In some embodiments, an insulating member may be provided inside the end cap 21 to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. For example, the insulating member may be made of plastic, rubber, or the like.

[0061] Lithium-ion anode materials, as key components of lithium-ion batteries, influence their cycling performance, self-discharge, and other properties. A key factor influencing this performance is the impurity content of the anode material. Impurities in anode materials are generally magnetic, and their content significantly impacts the performance of lithium-ion batteries. Currently, demagnetization devices are used to remove magnetic impurities from lithium-ion anode material powder. However, accumulated magnetic material in the demagnetization devices typically requires manual cleaning, increasing labor and safety costs.

[0062] In order to solve the above technical problems, an embodiment of the present application provides a demagnetization device, which includes an outer shell, a bin body and a demagnetization component. The outer shell is provided with a cavity and a feed port and a discharge port respectively connected to the cavity; the bin body is arranged on one side of the discharge port of the outer shell, and the bin body includes a discharge port and an impurity bin separated from each other; the demagnetization component is arranged close to the discharge port, and the demagnetization component includes a first rotating roller, a second rotating roller, a first cleaning member respectively in contact with the first rotating roller, and a second cleaning member in contact with the second rotating roller, the first rotating roller and the second rotating roller are both magnetic, and the first cleaning member and the second cleaning member are both arranged corresponding to the impurity bin.

[0063] In the above scheme, after the powder enters the cavity in the shell from the feed port, when it passes through the first rotating roller and the second rotating roller, since the first rotating roller and the second rotating roller are both magnetic, the magnetic position in the powder will be adsorbed by the first rotating roller and the second rotating roller, and then the powder follows the rotation of the first rotating roller and the second rotating roller, the first cleaning member removes the magnetic material on the first rotating roller, and the second cleaning member removes the magnetic material on the second rotating roller, and the magnetic material falls into the impurity bin, and the purified powder falls into the discharge bin, thereby realizing automatic removal and separation of magnetic materials without manual intervention, thereby enhancing work efficiency and safety factor.

[0064] Figure 5 Schematic cross-sectional view of a demagnetization device according to some embodiments of the present application.

[0065] like Figure 5 As shown, in the first aspect, an embodiment of the present application provides a demagnetization device 500, which includes a shell 40, a bin body 50 and a demagnetization component 60. The shell 40 is provided with a cavity and a feed port 41 and a discharge port 42 respectively connected to the cavity; the bin body 50 is arranged on one side of the discharge port 42 of the shell 40, and the bin body 50 includes a discharge bin 51 and an impurity bin 52 separated from each other; the demagnetization component 60 is arranged near the discharge port 42, and the demagnetization component 60 includes a first rotating roller 61, a second rotating roller 62, a first cleaning member 63 respectively in contact with the first rotating roller 61, and a second cleaning member 64 in contact with the second rotating roller 62, the first rotating roller 61 and the second rotating roller 62 are both magnetic, and the first cleaning member 63 and the second cleaning member 64 are both arranged corresponding to the impurity bin 52.

[0066] The housing 40 can be a rectangular parallelepiped, a cube, or other irregular shapes. The housing 40 encloses a hollow structure in the middle, i.e., a cavity. The feed port 41 and the discharge port 42 can be vertically disposed at both ends of the housing 40, i.e., the feed port 41 is located at the upper end of the housing 40, and the discharge port 42 is located at the lower end of the housing 40. The powdered negative electrode material enters the cavity through the feed port 41, then passes through the demagnetization device 500 and falls into the silo 50 through the discharge port 42.

[0067] The first rotating roller 61 and the second rotating roller 62 can each be connected to a driving member, and the first rotating roller 61 and the second rotating roller 62 can be rotated by the driving member. Alternatively, only one driving member can be used, connected to one of the first rotating roller 61 and the second rotating roller 62, and the first rotating roller 61 and the second rotating roller 62 are connected by a transmission member 67. The first rotating roller 61 and the second rotating roller 62 are driven to rotate by the driving member and the transmission member 67.

[0068] The first rotating roller 61 and the second rotating roller 62 are cylindrical and can rotate in opposite or identical directions. Both the first rotating roller 61 and the second rotating roller 62 are magnetic, meaning they can be either permanent magnets or electromagnets. For example, coils are disposed around the outer peripheries of the first rotating roller 61 and the second rotating roller 62 to generate magnetism when energized. The magnetic material in the negative electrode material powder, which may include metals such as iron and copper, is attracted to the first rotating roller 61 and the second rotating roller 62.

[0069] It should be noted that the first cleaning member 63 and the second cleaning member 64 are both arranged corresponding to the impurity bin 52, which means that the first cleaning member 63 and the second cleaning member 64 are located above the impurity bin 52, and the magnetic material removed by the first cleaning member 63 and the second cleaning member 64 can just fall into the impurity bin 52.

[0070] The first cleaning member 63 and the second cleaning member 64 may include scrapers to scrape off the magnetic material adsorbed on the first rotating roller 61 and the second rotating roller 62. Alternatively, the first cleaning member 63 and the second cleaning member 64 may include cleaning velvet strips to clean off the magnetic material adsorbed on the first rotating roller 61 and the second rotating roller 62.

[0071] In the above scheme, after the powder enters the cavity in the shell 40 from the feed port 41, when it passes through the first rotating roller 61 and the second rotating roller 62, since the first rotating roller 61 and the second rotating roller 62 are both magnetic, the magnetic position in the powder will be adsorbed by the first rotating roller 61 and the second rotating roller 62, and then the powder follows the first rotating roller 61 and the second rotating roller 62 to rotate, the first cleaning member 63 removes the magnetic material on the first rotating roller 61, and the second cleaning member 64 removes the magnetic material on the second rotating roller 62, and the magnetic material falls into the impurity bin 52, and the purified powder falls into the discharge bin 51, thereby realizing automatic removal and separation of magnetic materials without manual intervention, thereby enhancing work efficiency and safety factor.

[0072] In some embodiments, the first rotating roller 61 and the second rotating roller 62 are both permanent magnets.

[0073] Permanent magnets refer to magnets that can maintain their magnetism for a long time. Compared with the setting of electromagnets, permanent magnets can simplify the structure, reduce power and power consumption, and do not require an additional cooling system for cooling, thereby reducing costs.

[0074] In some embodiments, the demagnetization device 500 also includes a screen assembly 70 located in the cavity, which is arranged close to the feed port 41. The screen assembly 70 includes a fixing seat 71 and a screen 72. The fixing seat 71 is connected to the outer shell 40; the screen 72 is connected to the fixing seat 71.

[0075] In the above scheme, the screen 72 can screen and break up the powder, and limit the entry speed of the powder, so that the powder enters evenly between the first rotating roller 61 and the second rotating roller 62, thereby improving the adsorption effect of the magnetic substance and efficiently separating the magnetic substance; and the screen 72 can also filter out some foreign matter in the powder, thereby improving the purity of the powder.

[0076] In some embodiments, the screen assembly 70 further includes a first driving member 73 connected to the housing 40 , and the first driving member 73 is connected to the fixing seat 71 .

[0077] The fixing base 71 can be arranged along the circumference of the housing 40. Most of the fixing base 71 is fixed to the housing 40, and a small part of it is connected to the first driving member 73. The first driving member 73 can be a motor, a cylinder, or a hydraulic cylinder. For example, the first driving member 73 is a vibration motor.

[0078] In the above solution, the first driving member 73 can drive the screen 72 to vibrate, thereby further improving the screening effect of the screen 72 .

[0079] In some embodiments, the demagnetization assembly 60 also includes a guide plate 65, which is arranged on the side of the first rotating roller 61 and the second rotating roller 62 close to the feed port 41; in the direction along the shell 40 pointing to the cavity, the guide plate 65 is inclined toward the discharge port 42.

[0080] The guide plate 65 is shaped larger at the top and smaller at the bottom, for example, an inverted cone or an arc. The guide plate 65 can be made of a non-metallic material, such as polyurethane or polyethylene. Using a non-metallic material for the guide plate 65 can reduce the introduction of metallic impurities into the powder.

[0081] In the above solution, the material guide plate 65 can guide the powder to the first rotating roller 61 and the second rotating roller 62, further improving the working efficiency.

[0082] In some embodiments, the first rotating roller 61 and the second rotating roller 62 rotate in opposite directions.

[0083] For example, the first rotating roller 61 rotates clockwise, and the second rotating roller 62 rotates counterclockwise; or, the first rotating roller 61 rotates counterclockwise, and the second rotating roller 62 rotates clockwise.

[0084] In the above solution, by setting the rotation directions of the first rotating roller 61 and the second rotating roller 62 to be opposite, the magnetic substances on the first rotating roller 61 and the second rotating roller 62 can fall into the impurity bin 52 to facilitate separation of the magnetic substances in the powder.

[0085] In some embodiments, the impurity bin 52 includes a first impurity sub-bin 521 and a second impurity sub-bin 522, and the discharge bin 51 is located between the first impurity sub-bin 521 and the second impurity sub-bin 522; the rotation directions of the first rotating roller 61 and the second rotating roller 62 both point to the discharge bin 51.

[0086] Exemplarily, the discharge bin 51 is located in the middle, the first impurity sub-bin 521 is located on the left side of the discharge bin 51, and the second impurity sub-bin 522 is located on the right side of the discharge bin 51. The first rotating roller 61 rotates clockwise, and the second rotating roller 62 rotates counterclockwise.

[0087] The embodiment of the present application facilitates the removal of magnetic substances into the first impurity sub-bin 521 and the second impurity sub-bin 522 located on both sides, and the powder from which the magnetic substances are removed falls into the middle discharge bin 51 for easy collection.

[0088] Figure 6 It is a partial structural schematic diagram of the demagnetization device of some embodiments of the present application.

[0089] like Figure 6 As shown, in some embodiments, the first cleaning member 63 includes a first connecting portion 631, a first cleaning portion 632 and a first elastic portion 633, the first connecting portion 631 is connected to the housing 40; the first cleaning portion 632 is in contact with the first rotating roller 61; the first elastic portion 633 is arranged between the first connecting portion 631 and the first cleaning portion 632.

[0090] The first connection portion 631 can be directly formed integrally with the housing 40 and protruded toward the cavity, or the first connection portion 631 can be connected to the housing 40 by bolts, welding, clamping, or the like.

[0091] The first elastic portion 633 may be a spring or an elastic member such as rubber. When the first rotating roller 61 rotates, the first cleaning portion 632 contacts the first rotating roller 61. Since the first elastic portion 633 can be compressed, the first cleaning portion 632 can swing slightly when cleaning the magnetic material on the first rotating roller 61, without excessive interference with the first rotating roller 61.

[0092] The first cleaning portion 632 can be a scraper and can be made of non-metallic materials such as polyurethane, polyethylene, etc. The use of non-metallic materials for the guide plate 65 can reduce the introduction of metallic impurities in the powder. Alternatively, the first cleaning portion 632 can also be a sponge block, etc.

[0093] The second cleaning member 64 may have the same structure as the first cleaning member 63 , and the first cleaning member 63 and the second cleaning member 64 may be symmetrically arranged along the central axis of the cavity.

[0094] In the above solution, the provision of the first elastic portion 633 can avoid excessive force between the first cleaning portion 632 and the first rotating roller 61 to a certain extent, thereby preventing structural damage.

[0095] In some embodiments, in the direction from the housing 40 to the cavity, the first cleaning portion 632 is tilted toward the discharge port 42 .

[0096] The first cleaning portion 632 is tilted downward so that the cleaned magnetic substances can fall downward.

[0097] The embodiment of the present application facilitates scraping off more magnetic substances adsorbed on the first rotating roller 61 and causing them to fall into the impurity bin 52 .

[0098] Figure 7 yes Figure 5 Cross-sectional view along the AA direction.

[0099] like Figure 7 As shown, in some embodiments, the demagnetization assembly 60 also includes a second driving member 66 and a transmission member 67. The second driving member 66 is connected to the rotating shaft of the first rotating roller 61 to drive the first rotating roller 61 to rotate; the rotating shaft of the second rotating roller 62 is connected to the rotating shaft of the first rotating roller 61 through the transmission member 67.

[0100] The second driving member 66 may be a motor, a cylinder or a hydraulic cylinder.

[0101] In the above solution, through the cooperation between the second driving member 66 and the transmission member 67 , there is no need to provide a driving member for each of the first rotating roller 61 and the second rotating roller 62 , thereby simplifying the structure and reducing the cost.

[0102] Figure 8 It is a structural schematic diagram of the demagnetization device of some embodiments of the present application.

[0103] like Figure 8 As shown, in some embodiments, the transmission member 67 includes a plurality of gears 671 meshing in sequence, wherein one gear 671 is fixed to the rotating shaft of the first rotating roller 61 , and another gear 671 is fixed to the rotating shaft of the second rotating roller 62 .

[0104] Exemplarily, the second driving member 66 is disposed on the front side of the housing 40, and the transmission member 67 is disposed on the rear side of the housing 40. The second driving member 66 is connected to one end of the rotating shaft of the first rotating roller 61, and the first gear 671 is connected to the other end of the rotating shaft of the first rotating roller 61. When the second driving member 66 drives the first rotating roller 61 to rotate, the first gear 671 rotates accordingly. The second gear 671 and the third gear 671 are located in the middle and are both fixed to the housing 40. The first gear 671 drives the second gear 671 to rotate, and the second gear 671 drives the third gear 671 to rotate. The fourth gear 671 is connected to the rotating shaft of the second rotating roller 62, and the third gear 671 drives the fourth gear 671 to rotate, and the fourth gear 671 drives the driving rotating roller to rotate.

[0105] If the number of the gears 671 is even, the first rotating roller 61 and the second rotating roller 62 rotate in opposite directions. If the number of the gears 671 is odd, the first rotating roller 61 and the second rotating roller 62 rotate in the same direction.

[0106] In the above solution, the structure is further simplified and the cost is reduced by meshing the dimensions.

[0107] In some embodiments, the inner wall of the discharge bin 51 is inclined away from the housing 40 along the direction from the feed port 41 to the discharge port 42. In other words, the inner wall of the discharge bin 51 is also structured to be larger at the top and smaller at the bottom, which to a certain extent prevents powder from adhering to the inner wall of the discharge bin 51 and facilitates discharge.

[0108] In some embodiments, the demagnetization device 500 further includes a first valve 81 , which is disposed in the impurity bin 52 .

[0109] The first valve 81 may be a pneumatic butterfly valve or an electric butterfly valve.

[0110] In the above solution, the discharge of the magnetic material can be controlled by opening or closing the first valve 81 .

[0111] In some embodiments, the demagnetization device 500 further includes a second valve 82 , which is disposed on a side of the first valve 81 close to the discharge port 42 .

[0112] The first valve 81 and the second valve 82 can be connected to a negative pressure conveying system to automatically collect magnetic materials. When the first valve 81 is opened and the second valve 82 is closed, the magnetic materials can be collected between the first valve 81 and the second valve 82. When the first valve 81 is closed and the second valve 82 is opened, the negative pressure conveying system can be started to collect the magnetic materials, thereby improving work efficiency and reducing labor intensity.

[0113] In the above scheme, the demagnetization space and the external environment can be isolated, and the absorption of moisture can be controlled.

[0114] In a second aspect, an embodiment of the present application further provides a demagnetization device, comprising the demagnetization device 500 of any of the above-mentioned embodiments.

[0115] According to some embodiments of the present application, a demagnetization device 500 is provided. The demagnetization device 500 includes a housing 40, a bin 50, and a demagnetization assembly 60. The housing 40 is provided with a cavity and a feed port 41 and a discharge port 42 respectively connected to the cavity. The bin 50 is provided on one side of the discharge port 42 of the housing 40. The bin 50 includes a discharge port 51 and an impurity bin 52 separated from each other. The demagnetization assembly 60 is provided near the discharge port 42. The demagnetization assembly 60 includes a first rotating roller 61, a second rotating roller 62, a first cleaning member 63 respectively in contact with the first rotating roller 61, and a second cleaning member 64 in contact with the second rotating roller 62. The first rotating roller 61 and the second rotating roller 62 are both magnetic. The first cleaning member 63 and the second cleaning member 64 are both provided corresponding to the impurity bin 52. The first rotating roller 61 and the second rotating roller 62 are both permanent magnets.

[0116] 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 them. 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 or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A demagnetization device, characterized in that: include: The housing is provided with a cavity and a feed port and a discharge port respectively connected to the cavity; A bin body is provided on one side of the discharge port of the shell, and the bin body includes a discharge bin and an impurity bin separated from each other; A demagnetization component is arranged near the discharge port, and the demagnetization component includes a first rotating roller, a second rotating roller, a first cleaning member that contacts the first rotating roller, and a second cleaning member that contacts the second rotating roller. The first rotating roller and the second rotating roller are both magnetic, and the first cleaning member and the second cleaning member are both arranged corresponding to the impurity bin.

2. The demagnetization device according to claim 1, characterized in that The first rotating roller and the second rotating roller are both permanent magnets.

3. The demagnetization device according to claim 1, wherein: The demagnetization device further includes a screen assembly located in the cavity, the screen assembly being arranged close to the feed port, and the screen assembly comprising: a fixing seat connected to the housing; The screen is connected to the fixing seat.

4. The demagnetization device according to claim 3, characterized in that: The screen assembly further includes a first driving member connected to the housing, and the first driving member is connected to the fixing seat.

5. The demagnetization device according to claim 1, wherein: The demagnetization assembly also includes a material guide plate, which is arranged on the side of the first rotating roller and the second rotating roller close to the feed port; in the direction along the shell pointing to the cavity, the material guide plate is inclined toward the discharge port.

6. The demagnetization device according to claim 1, characterized in that: The first rotating roller and the second rotating roller rotate in opposite directions.

7. The demagnetization device according to claim 6, characterized in that: The impurity bin includes a first impurity sub-bin and a second impurity sub-bin, and the discharge bin is located between the first impurity sub-bin and the second impurity sub-bin; The rotation directions of the first rotating roller and the second rotating roller both point to the discharge bin.

8. The demagnetization device according to claim 6, characterized in that The first cleaning member comprises: a first connecting portion connected to the housing; a first cleaning portion in contact with the first rotating roller; The first elastic portion is disposed between the first connecting portion and the first cleaning portion.

9. The demagnetization device according to claim 8, characterized in that: In a direction from the shell to the cavity, the first cleaning portion is arranged to be inclined toward the discharge port.

10. The demagnetization device according to claim 1, wherein: The demagnetization component also includes: a second driving member connected to the rotating shaft of the first rotating roller and configured to drive the first rotating roller to rotate; A transmission member, wherein the rotation shaft of the second rotating roller is connected to the rotation shaft of the first rotating roller through the transmission member.

11. The demagnetization device according to claim 10, characterized in that: The transmission member includes a plurality of gears meshing in sequence, wherein one of the gears is fixed to the rotating shaft of the first rotating roller, and another gear is fixed to the rotating shaft of the second rotating roller.

12. The demagnetization device according to claim 1, wherein: In the direction from the feed port to the discharge port, the inner wall of the discharge bin is inclined away from the outer shell.

13. The demagnetization device according to claim 1, wherein: The demagnetization device further includes a first valve, which is arranged in the impurity bin.

14. The demagnetization device according to claim 13, characterized in that: The demagnetization device further includes a second valve, which is arranged on a side of the first valve close to the discharge port.

15. A demagnetization device, characterized in that: The device comprises the demagnetization device according to any one of claims 1 to 14.

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