Demagnetizing device
By designing a magnetic demagnetization device containing rotating magnetic channels, the problem of difficult removal of magnetic impurities in lithium carbonate is solved, and an efficient and continuous magnetic demagnetization process is achieved, which improves the purity and safety of battery materials.
Patent Information
- Application Number
- CN202421494497.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The prior art is difficult to efficiently remove magnetic impurities in lithium carbonate, affecting the safety performance of lithium-ion batteries, resulting in the risk of the battery's possible heat, combustion or explosion.
A demagnetization device is designed, including a feed pipe, a discharge pipe, a first butt, a second butt and a main body part. The main body part has a rotation center axis and a symmetrically arranged first magnetic channel and a second magnetic channel. The position switching of the magnetic channel is achieved through the rotation of the rotation center axis, and magnetic impurities are absorbed by magnets on the inner peripheral wall, and continuous demagnetization work is achieved through electromagnetic control.
The continuous adsorption and cleaning of magnetic impurities in lithium carbonate powder is achieved, the continuity of demagnetization work is ensured, the working efficiency is improved, and the purity and safety of battery materials are ensured.
Smart Images
Figure CN223184694U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium carbonate purification, in particular to a demagnetization device. Background Art
[0002] With the rise of the new energy boom, the battery industry is booming. The lithium carbonate industry, a crucial component of battery material precursors, is also experiencing a surge in demand. The mechanism by which magnetic impurity particles affect the safety performance of lithium-ion batteries is that during the charge and discharge process, organic matter in the electrolyte aggregates and grows around the magnetic particles, forming sharp corners or spikes. These magnetic particles oxidize at the positive electrode and then reduce at the negative electrode. During this movement, the magnetic particles can pierce the battery separator, causing an internal short circuit and subsequent rapid self-discharge, leading to heating, combustion, or even explosion. Therefore, the purity requirements for battery raw materials must be extremely stringent.
[0003] Lithium carbonate is an important raw material for lithium iron phosphate battery precursors. The process of purifying industrial-grade lithium carbonate to battery-grade lithium carbonate is particularly important, and magnetic impurities are also a very important indicator. Utility Model Content
[0004] In order to solve the technical problems existing in the background technology, the utility model proposes a demagnetization device.
[0005] The utility model provides a demagnetization device, comprising: a feed pipe, a discharge pipe, a first docking portion provided at one end of the feed pipe, a second docking portion provided at one end of the discharge pipe, and a main body located between the first docking portion and the second docking portion, wherein:
[0006] The first docking portion has a first opening communicating with the feed pipe and a first connecting seat provided on its side, and the second docking portion has a second opening communicating with the discharge pipe and a second connecting seat provided on its side;
[0007] The main body has a rotation center axis and a first magnetic channel and a second magnetic channel symmetrically arranged on both sides of the rotation center axis; the inner walls of the first magnetic channel and the second magnetic channel are provided with magnets for adsorbing magnetic impurities, and the two ends of the rotation center axis are respectively rotatably connected to the first connecting part and the second connecting part. The main body has a first position state and a second position state, and realizes its switching between the first position state and the second position state through the rotation of its rotation center axis. When the main body is in the first position state, the two ends of the first magnetic channel are respectively docked with the first opening and the second opening. When the main body is in the second position state, the two ends of the second magnetic channel are respectively docked with the first opening and the second opening.
[0008] Preferably, a secondary pipe is provided on the side of the discharge pipe, and when the two ends of the first magnetic channel are respectively connected to the first opening and the second opening, the end of the second magnetic channel close to the discharge pipe is connected to the secondary pipe; when the two ends of the second magnetic channel are respectively connected to the first opening and the second opening, the end of the first magnetic channel close to the discharge pipe is connected to the secondary pipe.
[0009] Preferably, a collecting hopper with a larger caliber than the first magnetic channel and the second magnetic channel is provided at the end of the auxiliary pipe.
[0010] Preferably, the magnet is an electromagnet, and a power connection part connected to a power cord is provided on the first docking part or the second docking part; the main body is located at the end of the first magnetic channel and is provided with a first conductive part electrically connected to the magnet in the first magnetic channel, and is located at the end of the second magnetic channel and is provided with a second conductive part electrically connected to the magnet in the second magnetic channel; and when the two ends of the first magnetic channel are respectively docked with the first opening and the second opening, the first conductive part is connected to the power connection part, and when the two ends of the second magnetic channel are respectively docked with the first opening and the second opening, the second conductive part is electrically connected to the power connection part.
[0011] Preferably, the power connection part is an annular metal sheet coaxially arranged on the outer periphery of the first through opening or the second through opening; the first conductive part and the second conductive part are both located at one end of the main body close to the power connection part, and the first conductive part and the second conductive part are both annular metal sheets, the first conductive part is coaxially arranged outside the first magnetic channel port, and the second conductive part is coaxially arranged outside the second magnetic channel port.
[0012] Preferably, a first magnetic grid is provided at one end of the first magnetic channel close to the second docking portion.
[0013] Preferably, a second magnetic grid is provided at one end of the second magnetic channel close to the second docking portion.
[0014] Preferably, the first magnetic grid includes a plurality of crisscrossed magnetic bars, each of which is an electromagnetic bar, and the magnetic bars in the first magnetic grid are electrically connected to the first conductive part.
[0015] Preferably, the second magnetic grid includes a plurality of crisscrossed magnetic bars, each of which is an electromagnetic bar, and the magnetic bars in the second magnetic grid are electrically connected to the second conductive part.
[0016] Preferably, a handle is provided on the side of the main body.
[0017] In the utility model, a first docking part is provided at one end of the feed pipe, a second docking part is provided at one end of the discharge pipe, a main body is provided between the first docking part and the second docking part, and the first docking part has a first opening that is communicated with the feed pipe, and the second docking part has a second opening that is communicated with the discharge pipe. At the same time, the main body has a rotating center axis and a first magnetic channel and a second magnetic channel symmetrically arranged on both sides of the rotating center axis, and the inner walls of the first magnetic channel and the second magnetic channel are provided with magnets for adsorbing magnetic impurities. The two ends of the rotating center axis are respectively rotatably connected to the first connecting part and the second connecting part. The main body has a first position state and a second position state, and its switching between the first position state and the second position state is achieved by rotating its rotating center axis. When the main body is in the first position state, the two ends of the first magnetic channel are respectively docked with the first port and the second port, so that the feed pipe and the discharge pipe are connected through the first magnetic channel. The lithium carbonate powder can flow from the feed pipe through the first magnetic channel into the discharge pipe, so that the magnet in the first magnetic channel adsorbs the magnetic impurities in the lithium carbonate powder. After working for a period of time, the second magnetic channel is made to enter a state of docking with the first port and the second port by rotating the main body to ensure that the pipeline continues to perform the conveying work, and the first magnetic channel is rotated out from the first port and the second port to clean up the impurities adsorbed on the inner wall of the first magnetic channel in preparation for the next conversion. This structural design can effectively ensure the continuity of demagnetization work and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The figure is a structural schematic diagram of a demagnetization device proposed by the utility model. DETAILED DESCRIPTION
[0019] Reference Figure 1 The utility model proposes a demagnetization device, comprising: a feed pipe 1, a discharge pipe 2, a first docking portion 3 arranged at one end of the feed pipe 1, a second docking portion 4 arranged at one end of the discharge pipe 2, and a main body 5 located between the first docking portion 3 and the second docking portion 4, wherein: the first docking portion 3 has a first through port communicated with the feed pipe 1 and a first connecting seat 31 arranged on its side, and the second docking portion 4 has a second through port communicated with the discharge pipe 2 and a second connecting seat 41 arranged on its side.
[0020] The main body 5 has a rotating center axis 53 and a first magnetic channel 51 and a second magnetic channel 52 symmetrically arranged on both sides of the rotating center axis 53; the inner walls of the first magnetic channel 51 and the second magnetic channel 52 are both provided with magnets 7 for adsorbing magnetic impurities, and the two ends of the rotating center axis 53 are respectively rotatably connected to the first connecting part and the second connecting part. The main body 5 has a first position state and a second position state, and realizes its switching between the first position state and the second position state through the rotation of its rotating center axis 53. When the main body 5 is in the first position state, the two ends of the first magnetic channel 51 are respectively docked with the first opening and the second opening, so that the feed pipe 1 and the discharge pipe 2 are connected through the first magnetic channel 51, and the lithium carbonate powder can flow from the feed pipe 1 through the first magnetic channel 51 into the discharge pipe 2, so that the magnetic impurities in the lithium carbonate powder can be adsorbed by the magnet 7 in the first magnetic channel 51.
[0021] The two ends of the second magnetic channel 52 are respectively connected to the outside world. When the main body 5 is in the second position, the two ends of the second magnetic channel 52 are respectively connected to the first opening and the second opening, so that the feed pipe 1 and the discharge pipe 2 are connected through the second magnetic channel 52. The lithium carbonate powder can flow from the feed pipe 1 through the second magnetic channel 52 and into the discharge pipe 2, so that the magnetic impurities in the lithium carbonate powder can be adsorbed by the magnet 7 in the second magnetic channel 52.
[0022] During impurity removal, the main body 5 is rotated to realize the position switching of the first magnetic channel 51 and the second magnetic channel 52, so that when one of the magnetic channels is performing the impurity removal work, the other magnetic channel is rotated out of the first opening and the second opening position and enters the outer side of the first docking part 3 and the second docking part 4. At this time, the magnetic impurities in the magnetic channel can be cleaned in preparation for entering the first opening and the second opening position next time.
[0023] As can be seen from the above, the present invention provides a first docking portion 3 at one end of the feed pipe 1, a second docking portion 4 at one end of the discharge pipe 2, and a main body 5 between the first docking portion 3 and the second docking portion 4, so that the first docking portion 3 has a first opening that communicates with the feed pipe 1, and the second docking portion 4 has a second opening that communicates with the discharge pipe 2. At the same time, the main body 5 has a rotation center axis 53 and a first magnetic channel 51 and a second magnetic channel 52 symmetrically arranged on both sides of the rotation center axis 53, and the inner peripheral walls of the first magnetic channel 51 and the second magnetic channel 52 are both provided with magnets 7 for adsorbing magnetic impurities, and the two ends of the rotation center axis 53 are rotatably connected to the first connecting portion and the second connecting portion respectively. The main body 5 has a first position state and a second position state, and its switching between the first position state and the second position state is achieved by the rotation of its rotation center axis 53, and when the main body 5 is in the first position state, the two ends of the first magnetic channel 51 are respectively connected to the first passage The first magnetic channel 51 is connected to the second magnetic channel 52 so that the feed pipe 1 and the discharge pipe 2 are connected through the first magnetic channel 51. The lithium carbonate powder can flow from the feed pipe 1 through the first magnetic channel 51 into the discharge pipe 2, so that the magnetic impurities in the lithium carbonate powder are adsorbed by the magnet 7 in the first magnetic channel 51. After working for a period of time, the main body 5 is rotated to make the second magnetic channel 52 enter the state of docking with the first and second ports to ensure that the pipeline continues to perform the conveying work, and the first magnetic channel 51 is rotated out from the first and second ports to clean up the impurities adsorbed on the inner wall of the first magnetic channel 51 in preparation for the next conversion. This structural design can effectively ensure the continuity of the demagnetization work and improve work efficiency.
[0024] In addition, in this embodiment, a secondary pipe 6 is provided on the side of the discharge pipe 2, and when the two ends of the first magnetic channel 51 are respectively connected to the first and second openings, the end of the second magnetic channel 52 near the discharge pipe 2 is connected to the secondary pipe 6. At this time, the magnetic impurities cleaned out from the second magnetic channel 52 directly enter the secondary pipe 6 for centralized collection and transportation by the secondary pipe 6. When the two ends of the second magnetic channel 52 are respectively connected to the first and second openings, the end of the first magnetic channel 51 near the discharge pipe 2 is connected to the secondary pipe 6. At this time, the magnetic impurities cleaned out from the first magnetic channel 51 directly enter the secondary pipe 6 for centralized collection and transportation by the secondary pipe 6.
[0025] Furthermore, a collecting hopper 61 having a larger diameter than the first magnetic channel 51 and the second magnetic channel 52 is provided at the end of the auxiliary pipe 6 , and the magnetic impurities cleared from the first magnetic channel 51 and the second magnetic channel 52 fall into the auxiliary pipe 6 through the collecting hopper 61 .
[0026] The magnet 7 in this embodiment is an electromagnet 7, and a power connection part 8 connected to a power cord is provided on the first docking part 3 or the second docking part 4; the main body 5 is located at the end of the first magnetic channel 51 and is provided with a first conductive part 54 electrically connected to the magnet 7 in the first magnetic channel 51, and is located at the end of the second magnetic channel 52 and is provided with a second conductive part 55 electrically connected to the magnet 7 in the second magnetic channel 52, and when the two ends of the first magnetic channel 51 are respectively docked with the first opening and the second opening, the first conductive part 54 is connected to the power connection part 8, at this time, the magnet 7 in the first magnetic channel 51 is energized to adsorb magnetic impurities, and when the first magnetic channel 51 is separated from the first opening and the second opening, the magnet 7 in the first magnetic channel 51 is de-energized and loses its magnetic attraction ability, so that the magnetic impurities adsorbed on the inner wall of the first magnetic channel 51 automatically fall out and enter the material removal state. Similarly, when the two ends of the second magnetic channel 52 are respectively connected to the first opening and the second opening, the second conductive part 55 is electrically connected to the power connection part 8. At this time, the magnet 7 in the second magnetic channel 52 is energized to adsorb magnetic impurities. When the second magnetic channel 52 is separated from the first opening and the second opening, the magnet 7 in the second magnetic channel 52 is de-energized and loses its magnetic attraction ability, so that the magnetic impurities adsorbed on the inner wall of the second magnetic channel 52 automatically fall out and enter the material removal state.
[0027] Furthermore, the power connection part 8 is an annular metal sheet coaxially arranged on the outer periphery of the first opening or the second opening; the first conductive part 54 and the second conductive part 55 are both located at one end of the main body 5 close to the power connection part 8, and the first conductive part 54 and the second conductive part 55 are both annular metal sheets, the first conductive part 54 is coaxially arranged outside the port of the first magnetic channel 51, and the second conductive part 55 is coaxially arranged outside the port of the second magnetic channel 52; when the two ends of the first magnetic channel 51 are respectively connected to the first opening and the second opening, the first conductive part 54 is in contact with the power connection part 8, and when the two ends of the second magnetic channel 52 are respectively connected to the first opening and the second opening, the second conductive part 55 is in contact with the power connection part 8.
[0028] In addition, this embodiment further provides a first magnetic grid 9 at one end of the first magnetic channel 51 close to the second docking portion 4 , and provides a second magnetic grid 10 at one end of the second magnetic channel 52 close to the second docking portion 4 to enhance the demagnetization effect.
[0029] Furthermore, the first magnetic channel 51 of the first magnetic grille 9 and the second magnetic channel 52 of the second magnetic grille 10 are both installed in a flip-top style to facilitate opening.
[0030] Furthermore, both the first magnetic grid 9 and the second magnetic grid 10 include a plurality of crisscrossing magnetic bars, each of which is an electromagnetic bar. The magnetic bars in the first magnetic grid 9 are electrically connected to the first conductive portion 54, and the magnetic bars in the second magnetic grid 10 are electrically connected to the second conductive portion 55. When the first conductive portion 54 is electrically connected to the power connection portion 8, the first magnetic grid 9 enters an electrically attracted state. When the second conductive portion 55 is electrically connected to the power connection portion 8, the second magnetic grid 10 enters an electrically attracted state.
[0031] In this embodiment, a handle is provided on the side of the main body 5 , and the main body 5 is rotated by the handle to switch the main body 5 between the first position state and the second position state.
[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A demagnetization device, characterized in that: include: A feed pipe (1), a discharge pipe (2), a first docking portion (3) provided at one end of the feed pipe (1), a second docking portion (4) provided at one end of the discharge pipe (2), and a main body (5) located between the first docking portion (3) and the second docking portion (4), wherein: The first docking portion (3) has a first opening communicating with the feed pipe (1) and a first connecting seat (31) provided on the side thereof, and the second docking portion (4) has a second opening communicating with the discharge pipe (2) and a second connecting seat (41) provided on the side thereof; The main body (5) has a rotation center axis (53) and a first magnetic channel (51) and a second magnetic channel (52) symmetrically arranged on both sides of the rotation center axis (53); the inner peripheral walls of the first magnetic channel (51) and the second magnetic channel (52) are both provided with magnets (7) for absorbing magnetic impurities, and the two ends of the rotation center axis (53) are respectively rotatably connected to the first connecting part and the second connecting part. The main body (5) has a first position state and a second position state, and is switched between the first position state and the second position state by rotating its rotation center axis (53). When the main body (5) is in the first position state, the two ends of the first magnetic channel (51) are respectively connected to the first through port and the second through port. When the main body (5) is in the second position state, the two ends of the second magnetic channel (52) are respectively connected to the first through port and the second through port.
2. The demagnetization device according to claim 1, characterized in that A secondary pipe (6) is provided on the side of the discharge pipe (2), and when the two ends of the first magnetic channel (51) are respectively connected to the first opening and the second opening, the end of the second magnetic channel (52) close to the discharge pipe (2) is connected to the secondary pipe (6); when the two ends of the second magnetic channel (52) are respectively connected to the first opening and the second opening, the end of the first magnetic channel (51) close to the discharge pipe (2) is connected to the secondary pipe (6).
3. The demagnetization device according to claim 2, characterized in that The end of the auxiliary pipe (6) is provided with a collecting hopper (61) with a diameter larger than that of the first magnetic channel (51) and the second magnetic channel (52).
4. The demagnetization device according to claim 1, characterized in that The magnet (7) is an electromagnet, and a power connection portion (8) connected to a power line is provided on the first docking portion (3) or the second docking portion (4); a first conductive portion (54) electrically connected to the magnet (7) in the first magnetic channel (51) is provided at the end of the main body (5) located in the first magnetic channel (51), and a second conductive portion (55) electrically connected to the magnet (7) in the second magnetic channel (52) is provided at the end of the second magnetic channel (52); and when the two ends of the first magnetic channel (51) are docked with the first opening and the second opening respectively, the first conductive portion (54) is connected to the power connection portion (8), and when the two ends of the second magnetic channel (52) are docked with the first opening and the second opening respectively, the second conductive portion (55) is electrically connected to the power connection portion (8).
5. The demagnetization device according to claim 4, characterized in that: The power connection part (8) is an annular metal sheet coaxially arranged on the outer periphery of the first through-hole or the second through-hole; the first conductive part (54) and the second conductive part (55) are both located at one end of the main body (5) close to the power connection part (8), and the first conductive part (54) and the second conductive part (55) are both annular metal sheets, the first conductive part (54) is coaxially arranged outside the port of the first magnetic channel (51), and the second conductive part (55) is coaxially arranged outside the port of the second magnetic channel (52).
6. The demagnetization device according to claim 4, characterized in that A first magnetic grid (9) is provided at one end of the first magnetic channel (51) close to the second docking portion (4).
7. The demagnetization device according to claim 4, characterized in that: A second magnetic grid (10) is provided at one end of the second magnetic channel (52) close to the second docking portion (4).
8. The demagnetization device according to claim 6, characterized in that The first magnetic grid (9) comprises a plurality of crisscrossed magnetic bars, each of which is an electromagnetic bar, and the magnetic bars in the first magnetic grid (9) are electrically connected to the first conductive part (54).
9. The demagnetization device according to claim 7, characterized in that: The second magnetic grid (10) comprises a plurality of crisscrossed magnetic bars, each of which is an electromagnetic bar, and the magnetic bars in the second magnetic grid (10) are electrically connected to the second conductive part (55).
10. The demagnetization device according to any one of claims 1 to 9, characterized in that: A rotating handle is provided on the side of the main body (5).