Screening device for recycling lithium batteries

Abstract

The screening device comprises a first screening structure, a second screening structure and a driving assembly, the first screening structure comprises a feeding channel, a first discharging channel, a second discharging channel, a first magnetic separation assembly and a second magnetic separation assembly, the first magnetic separation assembly is used for screening the shredded steel shells in the lithium battery mixed raw materials, the second magnetic separation assembly is used for secondary screening of the steel shells screened by the first magnetic separation assembly, the steel shells subjected to secondary screening are collected through the first discharging channel, and the remaining materials subjected to secondary screening are collected in the second discharging channel and flow to the next procedure; the second screening structure is arranged on the discharging channel and used for airflow screening of diaphragms in remaining materials, and the remaining materials fall on the conveying assembly below the second discharging channel. The two driving assemblies are electrically connected with the first magnetic separation assembly and the second magnetic separation assembly correspondingly. The device is integrated equipment combining magnetic separation and air separation, the steel shells and the diaphragms can be recycled at the same time, and the recycling efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery recycling technology, and specifically relates to a screening device for lithium battery recycling. Background Technology

[0002] Waste lithium batteries are lithium batteries that have been depleted of their charge. To prevent waste lithium batteries from entering the ecosystem and causing environmental harm, they need to be collected and recycled. Existing battery processing methods generally involve crushing the batteries and then separating materials such as black powder, steel shell, separator, aluminum, and copper in sequence, followed by sorting. The steel shell screening is usually done using a magnetic separator, with only one set of magnetic separation components. Due to the large amount of raw material, some other materials may accidentally fall into the steel shell collection box after one screening process, making it impossible to ensure that the remaining materials are completely separated from the steel shell. This reduces the screening quality of the steel shell, affects subsequent sorting, and also prevents the simultaneous recovery of the separator, resulting in low recycling efficiency. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a screening device for lithium battery recycling, which improves the screening quality and recovery rate of the steel shell. The second screening structure further separates and recovers the membrane within the remaining material. This device is an integrated unit combining magnetic separation and air separation, enabling the simultaneous recovery of both the steel shell and the membrane, thus improving recycling efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A screening device for lithium battery recycling includes:

[0006] The first screening structure includes a feeding channel, a first discharging channel, a second discharging channel, a first magnetic separation component, and a second magnetic separation component. The first magnetic separation component and the second magnetic separation component are arranged parallel to each other in the longitudinal direction. The first magnetic separation component is used to screen the steel shell in the shredded lithium battery mixed raw material. The second magnetic separation component is used to perform a secondary screening of the steel shell that has been screened by the first magnetic separation component. The steel shell that has been screened in the secondary screening is collected through the first discharging channel. The remaining material after the two screenings is collected in the second discharging channel and flows to the next process.

[0007] A second screening structure, disposed at the discharge end of the second discharge channel, is used for airflow screening of the remaining material within the diaphragm, with the remaining material falling onto a transport assembly below the second discharge channel; and...

[0008] Two drive components are provided, which are electrically connected to the first magnetic separation component and the second magnetic separation component, respectively, and the two magnetic separation components operate at the same frequency.

[0009] Preferably, the first screening structure further includes a shell and a base. The base is connected to the ground, and the shell is disposed on the surface of the base away from the ground. The first magnetic separation component and the second magnetic separation component are disposed inside the shell. The surface of the shell away from the base has the feeding channel, the surface of the shell facing the base has the first discharge channel, and the periphery of the shell has the second discharge channel. The feeding channel, the first discharge channel, and the second discharge channel are in communication with the interior of the shell.

[0010] Preferably, the housing is provided with a first guide plate and a second guide plate. The first guide plate divides the housing into two mounting cavities. The first magnetic separation component and the second magnetic separation component are respectively installed in the two mounting cavities. The first guide plate has a feed inlet for connecting the two mounting cavities and feeding the second magnetic separation component. The second guide plate is disposed between the second magnetic separation component and the first discharge channel.

[0011] Preferably, the second discharge channel includes a shell and a limiting plate. The shell is set at an angle to the ground, and the limiting plate is disposed on the shell to guide the remaining material after primary screening into the second discharge channel. The bottom wall of the shell is used to guide the remaining material after secondary screening into the second discharge channel.

[0012] Preferably, the length of the limiting plate is less than the length of the outer shell.

[0013] Preferably, the length of the second magnetic separator is less than the length of the first magnetic separator.

[0014] Preferably, the first magnetic separation component includes a magnetic roller, a mounting rod, and a magnetic system. The end of the mounting rod is connected to the housing, the magnetic system is disposed around the periphery of the mounting rod, and the magnetic roller covers the mounting rod and the magnetic system and is drivenly connected to the drive component.

[0015] Preferably, the drive assembly includes a drive motor and a coupling, and the drive end of the drive motor is drivenly connected to the magnetic roller through the coupling.

[0016] Preferably, the second screening structure includes a blower, a receiving screen, and a cover. The blower is located at the outlet of the second discharge channel, and the blower's outlet surface faces the remaining material. The cover covers part of the transport components. The second discharge channel communicates with the cover. The receiving screen is used to collect the diaphragm and is positioned opposite the blower.

[0017] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0018] The steel shell is separated from the raw material by setting a first magnetic separation component, and the steel shell is screened a second time by a second magnetic separation component to remove other substances mixed into the steel shell during the first screening, thereby improving the screening quality and recovery rate of the steel shell. The second screening structure can further separate and recover the diaphragm in the remaining material. This device is an integrated equipment that combines magnetic separation and air separation, which can recover both the steel shell and the diaphragm at the same time, thus improving the recovery efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the screening device for lithium battery recycling of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the screening device for lithium battery recycling of this utility model;

[0021] Figure 3 This is a cross-sectional view of the screening device for lithium battery recycling according to this utility model.

[0022] In the attached diagram, 1-first screening structure, 11-feeding channel, 12-first discharge channel, 13-second discharge channel, 131-outer shell, 132-limiting plate, 14-first magnetic separation component, 141-first guide plate, 142-second guide plate, 143-magnetic roller, 144-mounting rod, 145-magnetic system, 146-feed inlet, 15-second magnetic separation component, 16-shell, 17-base, 2-second screening structure, 21-fan, 22-receiving net, 23-cover, 3-drive component, 31-drive motor, 32-coupling, 4-transport component, 5-receiving box. Detailed Implementation

[0023] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims.

[0025] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] To resolve the above issues, please refer to [link / reference]. Figures 1 to 3 This utility model provides a screening device for lithium battery recycling, including a first screening structure 1, a second screening structure 2, and a drive assembly 3. The first screening structure 1 includes a feeding channel 11, a first discharging channel 12, a second discharging channel 13, a first magnetic separation assembly 14, and a second magnetic separation assembly 15. The first magnetic separation assembly 14 and the second magnetic separation assembly 15 are arranged parallel to each other in the longitudinal direction. The first magnetic separation assembly 14 is used to screen the steel shells in the shredded lithium battery mixed raw materials, and the second magnetic separation assembly 15 is used to perform a secondary screening of the steel shells screened by the first magnetic separation assembly 14. The steel shells screened in the secondary screening are collected through the first discharging channel 12, and the remaining materials from the two screenings are collected in the second discharging channel 13 and flow to the next process. The second screening structure 2 is located at the discharge end of the second discharging channel 13 and is used for air-air screening of the diaphragms in the remaining materials. The remaining materials fall onto the transport assembly 4 below the second discharging channel 13. The two drive assemblies 3 are electrically connected to the first magnetic separation assembly 14 and the second magnetic separation assembly 15, respectively, and the two magnetic separation assemblies operate at the same frequency.

[0028] In optional embodiments, such as Figure 1As shown, the first screening structure 1 further includes a housing 16 and a base 17. The base 17 is connected to the ground, and the housing 16 is disposed on the surface of the base 17 facing away from the ground. The first magnetic separation component 14 and the second magnetic separation component 15 are disposed inside the housing 16. The surface of the housing 16 facing away from the base 17 has the feeding channel 11, the surface of the housing 16 facing the base 17 has the first discharge channel 12, and the periphery of the housing 16 has the second discharge channel 13. The feeding channel 11, the first discharge channel 12, and the second discharge channel 13 are in communication with the interior of the housing 16. Specifically, both the housing 16 and the base 17 are made of metal, which has the advantages of high brightness and rust resistance, extending the service life of the device. The base 17 can be connected to the ground by a threaded connection, and adjustable feet can be set on the base 17 to balance the height of the device. The housing 16 consists of a main body and two end caps, which are detachably connected to the two ends of the main body. The first magnetic separation component 14 and the second magnetic separation component 15 are arranged inside the main body along the length of the main body. The two magnetic separation components are arranged parallel to each other in the longitudinal direction inside the main body, and the two ends of some magnetic separation components are connected to the end caps. The main body is cut and welded to form a feeding channel 11. The shredded lithium battery mixed raw materials enter the main body through the feeding channel 11, and the steel shell and separator are separated from the raw materials.

[0029] In optional embodiments, such as Figure 3 As shown, the housing 16 is provided with a first guide plate 141 and a second guide plate 142. The first guide plate 141 divides the housing 16 into two mounting cavities. The first magnetic separation assembly 14 and the second magnetic separation assembly 15 are respectively installed in the two mounting cavities. The first guide plate 141 has a feed inlet 146, which is used to connect the two mounting cavities and feed the second magnetic separation assembly 15. The second guide plate 142 is disposed between the second magnetic separation assembly 15 and the first discharge channel 12. Specifically, both the first and second guide members are formed by multiple guide plates arranged in a funnel shape, so that the steel shells after the first screening are collected by the first guide member and enter the second magnetic separation assembly 15, while the steel shells after the second screening are collected by the second guide member to the first discharge channel 12 and enter the receiving box 5.

[0030] In optional embodiments, such as Figure 3As shown, the second discharge channel 13 includes a housing 131 and a limiting plate 132. The housing 131 is set at an angle to the ground, and the limiting plate 132 is disposed on the housing 131 to guide the remaining material from the first screening into the second discharge channel 13. The bottom wall of the housing 131 is used to guide the remaining material from the second screening into the second discharge channel 13. Specifically, the limiting plate 132 is welded to the edge of the first guide member facing the second discharge channel 13, and the housing 131 is welded to the shell body and the edge of the second guide member, so that the remaining material after the two screenings enters the second discharge channel 13 and collects for the separation membrane process.

[0031] In an optional embodiment, the length of the limiting plate 132 is less than the length of the outer shell 131. Specifically, the limiting plate 132 and the outer shell 131 are aligned with each other at one end connected to the magnetic roller 143, so that the remaining material from the first screening and the material from the second screening are collected and flow to the transport component 4.

[0032] In optional embodiments, such as Figure 2 As shown, the length of the second magnetic separator 15 is shorter than the length of the first magnetic separator 14. Specifically, the second magnetic separator 15 is used for the second screening of the steel shell. The amount of material is reduced, and the required magnetic attraction area is small. Therefore, shortening the length of the second magnetic separator 15 can effectively reduce energy consumption.

[0033] In optional embodiments, such as Figure 3 As shown, the first magnetic separation assembly 14 includes a magnetic drum 143, a mounting rod 144, and a magnetic system 145. The end of the mounting rod 144 is connected to the housing 16. The magnetic system 145 is disposed around the mounting rod 144. The magnetic drum 143 covers the mounting rod 144 and the magnetic system 145 and is drivenly connected to the drive assembly 3. Specifically, the first magnetic separation assembly 14 and the second magnetic separation assembly 15 have the same structure. Utilizing the magnetic attraction of the magnetic system 145 on the steel shell, when material falls onto the magnetic drum 143, the steel shell is attracted to the magnetic drum 143, while other materials enter the second discharge channel 13.

[0034] In optional embodiments, such as Figure 2 As shown, the drive assembly 3 includes a drive motor 31 and a coupling 32. The drive end of the drive motor 31 is connected to the magnetic roller 143 via the coupling 32.

[0035] In optional embodiments, such as Figure 3As shown, the second screening structure 2 includes a blower 21, a receiving screen 22, and a cover 23. The blower 21 is located at the outlet of the second discharge channel 13, with its outlet facing the remaining material. The cover 23 covers a portion of the transport assembly 4, and the second discharge channel 13 communicates with the cover 23. The receiving screen 22 is used to collect the diaphragm and is positioned opposite the blower 21. Specifically, the blower 21 blows the diaphragm away from the blower 21, separating the diaphragm from the remaining material, which is then received by the receiving screen 22.

[0036] In use, the shredded lithium battery mixed raw materials are transported to the feeding channel 11 via a conveyor belt and enter the device through the feeding channel 11. The steel shell is separated from the mixed raw materials by the first magnetic separation component 14. The remaining material enters the second discharge channel 13 due to inertia, while the steel shell enters the second magnetic separation component 15 through the first guide. The steel shell is then screened a second time by the second magnetic separation component 15 to separate non-steel shell materials that have accidentally entered the second magnetic separation component 15. The steel shell then enters the first discharge channel 12 through the second guide and is collected by the receiving box 5. The remaining material after the two screenings is collected in the second discharge channel 13 and falls onto the conveying component 4 at the outlet end of the second discharge channel 13. During the fall, the blower 21 blows the lighter diaphragm away from the blower 21, causing the diaphragm to separate from the remaining material, which is then received by the receiving net 22.

[0037] In summary, by setting up the first magnetic separation component 14 to separate the steel shell from the raw material, and by using the second magnetic separation component 15 to perform secondary screening on the steel shell, other substances mixed into the steel shell during the first screening are removed, thereby improving the screening quality and recovery rate of the steel shell. The second screening structure can further separate and recover the diaphragm in the remaining material. This device is an integrated equipment combining magnetic separation and air separation, which can simultaneously recover the steel shell and the diaphragm, thus improving the recovery efficiency.

[0038] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A screening device for lithium battery recycling, characterized in that, include: The first screening structure includes a feeding channel, a first discharging channel, a second discharging channel, a first magnetic separation component, and a second magnetic separation component. The first magnetic separation component and the second magnetic separation component are arranged parallel to each other in the longitudinal direction. The first magnetic separation component is used to screen the steel shell in the shredded lithium battery mixed raw material. The second magnetic separation component is used to perform a secondary screening of the steel shell that has been screened by the first magnetic separation component. The steel shell that has been screened in the secondary screening is collected through the first discharging channel. The remaining material after the two screenings is collected in the second discharging channel and flows to the next process. The second screening structure is located at the discharge end of the second discharge channel and is used for airflow screening of the diaphragm of the remaining material, while the remaining material falls into the transport component below the second discharge channel. as well as, Two drive components are provided, which are electrically connected to the first magnetic separation component and the second magnetic separation component, respectively, and the two magnetic separation components operate at the same frequency.

2. The screening device for lithium battery recycling according to claim 1, characterized in that, The first screening structure further includes a shell and a base. The base is connected to the ground, and the shell is disposed on the surface of the base away from the ground. The first magnetic separation component and the second magnetic separation component are disposed inside the shell. The surface of the shell away from the base has the feeding channel, the surface of the shell facing the base has the first discharge channel, and the periphery of the shell has the second discharge channel. The feeding channel, the first discharge channel, and the second discharge channel are in communication with the interior of the shell.

3. The screening device for lithium battery recycling according to claim 2, characterized in that, The housing is provided with a first guide plate and a second guide plate. The first guide plate divides the housing into two mounting cavities. The first magnetic separation component and the second magnetic separation component are respectively installed in the two mounting cavities. The first guide plate has a feed inlet for connecting the two mounting cavities and feeding the second magnetic separation component. The second guide plate is disposed between the second magnetic separation component and the first discharge channel.

4. The screening device for lithium battery recycling according to claim 2, characterized in that, The second discharge channel includes a shell and a limiting plate. The shell is set at an angle to the ground. The limiting plate is set on the shell and is used to guide the remaining material after the first screening into the second discharge channel. The bottom wall of the shell is used to guide the remaining material after the second screening into the second discharge channel.

5. The screening device for lithium battery recycling according to claim 4, characterized in that, The length of the limiting plate is less than the length of the outer shell.

6. The screening device for lithium battery recycling according to claim 2, characterized in that, The length of the second magnetic separator is less than the length of the first magnetic separator.

7. The screening device for lithium battery recycling according to claim 6, characterized in that, The first magnetic separation assembly includes a magnetic roller, a mounting rod, and a magnetic system. The end of the mounting rod is connected to the housing. The magnetic system is disposed around the periphery of the mounting rod. The magnetic roller covers the mounting rod and the magnetic system and is drivenly connected to the drive assembly.

8. The screening device for lithium battery recycling according to claim 7, characterized in that, The drive assembly includes a drive motor and a coupling, and the drive end of the drive motor is connected to the magnetic roller via the coupling.

9. The screening device for lithium battery recycling according to claim 1, characterized in that, The second screening structure includes a blower, a receiving screen, and a cover. The blower is located at the outlet of the second discharge channel, and the blower's outlet surface faces the remaining material. The cover covers part of the transport components. The second discharge channel is connected to the cover. The receiving screen is used to collect the diaphragm and is positioned opposite the blower.

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