Iron remover with spiral flow guide structure

Abstract

The utility model relates to the technical field of lithium ion batteries, in particular to a de-ironing separator with a spiral flow guide structure, which comprises a de-ironing separator cylinder, a magnetic bar and a flow guide plate, the magnetic bar is arranged in the de-ironing separator cylinder and spirally arranged on the magnetic bar, the magnetic bar forms a spiral flow guide channel in a space between the inner wall of the de-ironing separator cylinder and the outer wall of the magnetic bar, and the flow guide plate is arranged on the de-ironing separator cylinder. When the slurry flows in the iron remover, the slurry is forcibly overturned by the flow guide plate, so that the demagnetizing effect on the slurry is improved, the flowing path of the slurry in the iron remover is prolonged through the design of the spiral flow guide channel, and the demagnetizing effect on the slurry is further improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery technology, specifically to an iron remover with a spiral flow guiding structure. Background Technology

[0002] The liquid slurry used in battery manufacturing often contains magnetic impurities, which can affect battery performance and even pose safety risks. How to effectively remove magnetic impurities from battery slurry while ensuring production safety is a significant technical challenge in battery technology. Currently, battery slurry demagnetization mainly employs the cylindrical magnetic rod adsorption method, but traditional magnetic rods and slurry iron separators have the following problems:

[0003] 1. When the slurry viscosity is high, the range of magnetic field action in the iron separator is limited, and it is difficult to completely adsorb tiny magnetic materials within the limited magnetic field path;

[0004] 2. The slurry tends to form a retention layer on the surface of the magnetic rod, and the slurry far from the surface of the magnetic rod has difficulty contacting the surface of the magnetic rod, thus affecting the sufficiency of magnetic impurity adsorption.

[0005] Therefore, there is an urgent need for an iron separator that can flip or agitate the slurry during the iron removal process, so that each part of the slurry can get close enough to the surface of the magnetic rod, while extending the path of the magnetic field and improving the demagnetization efficiency. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an iron separator with a spiral flow guiding structure, which can agitate the slurry during the iron removal process and extend the slurry's travel path, thereby improving the demagnetization efficiency and effect of the slurry.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a magnetic separator with a spiral flow guiding structure, comprising a magnetic separator cylinder, a magnetic rod, and a flow guiding plate. The magnetic rod is disposed inside the magnetic separator cylinder, and a flow guiding plate is spirally arranged on the magnetic rod along its axial direction. An insulating buffer is disposed along the outer edge of the flow guiding plate. The flow guiding plate and the insulating buffer form a spiral flow guiding channel between the inner wall of the magnetic separator cylinder and the outer wall of the magnetic rod. The magnetic separator cylinder also has a slurry inlet and a slurry outlet, located at opposite ends of the spiral flow guiding channel and communicating with it. By forming a spiral flow guiding channel between the magnetic separator cylinder and the magnetic rod through the flow guiding plate, the slurry needs to flow along the spiral flow guiding channel during demagnetization, undergoing continuous tumbling and a longer travel path, thereby improving the demagnetization efficiency and effect.

[0008] As an optional technical solution of this utility model, the insulating buffer is made of silicone, and the insulating buffer comes into contact with the inner wall of the iron remover cylinder.

[0009] As an optional technical solution of this utility model, the iron remover cylinder is a cylindrical shape with an internal cylindrical cavity and one end open. A sealing cap is provided on the magnetic rod, and the sealing cap is detachably matched with the open end of the iron remover cylinder.

[0010] As an optional technical solution of this utility model, the pitch of the guide plate is 1-5 times the diameter of the magnetic rod, and the tilt angle of the guide plate is 15°-45°.

[0011] As an optional technical solution of this utility model, the magnetic induction intensity of the magnetic rod is 0.5-1.2T.

[0012] Compared with the prior art, the advantages of this utility model are as follows: 1. By setting a guide plate between the inner wall of the iron separator cylinder and the magnetic rod, a spiral guide channel is formed. During the flow of the slurry in the iron separator, it is forcibly turned over by the guide plate, so that the magnetic rod can more fully adsorb the magnetic foreign objects in the slurry; 2. The guide plate also extends the flow path of the slurry in the iron separator and extends the length of the magnetic field's action path, further improving the demagnetization efficiency and demagnetization effect. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a cross-sectional schematic diagram of the iron separator;

[0015] Figure 2 A schematic diagram of the iron separator without the iron separator cylinder;

[0016] Figure 3 A comparison diagram showing the demagnetizing effect of the slurry demagnetized using the iron separator of this patent and the demagnetizing slurry using the existing iron separator without a spiral flow guide structure;

[0017] In the diagram: 1. Iron remover cylinder, 2. Magnetic rod, 3. Guide plate, 4. Isolation buffer, 5. Slurry inlet, 6. Slurry outlet, 7. Sealing cap. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0019] like Figure 1 , Figure 2 As shown, a magnetic separator with a spiral flow guiding structure includes a magnetic separator cylinder 1, a magnetic rod 2, and a flow guiding plate 3. The magnetic rod 2 is disposed inside the magnetic separator cylinder 1. The flow guiding plate 3 is in the shape of a spiral blade, connected to the magnetic rod 2 and spirally arranged along the axial direction of the magnetic rod 2. An insulating buffer 4 is disposed at the outer edge of the flow guiding plate 3. The insulating buffer 4 is made of silicone and covers the outer plate of the flow guiding plate 3. The outer edge of the flow guiding plate 3 abuts against the inner wall of the magnetic separator cylinder 1 through the insulating buffer 4. The spiral structure formed by the flow guiding plate 3 and the insulating buffer 4, together with the inner wall of the magnetic separator cylinder 1 and the outer wall of the magnetic rod 2, forms a spiral flow guiding channel. The magnetic separator cylinder 1 is also provided with a slurry outlet 6 and a slurry inlet 5, located at both ends of the spiral flow guiding channel and communicating with the spiral flow guiding channel.

[0020] After the slurry enters the iron separator cylinder 1 through the slurry inlet 5, it flows towards the slurry outlet 6 along the spiral guide channel under the guidance of the guide plate 3. Under the action of the magnetic field of the magnetic rod 2, the metallic impurities in the slurry are removed, and finally it is discharged from the slurry outlet 6. Compared with the existing iron separators without a spiral guide structure, the iron separator of this embodiment improves the adsorption effect on magnetic impurities in the slurry by turning and agitating the slurry and extending the movement path of the slurry.

[0021] Specifically, the iron separator cylinder 1 is a cylindrical structure with an internal cylindrical cavity. One end of the iron separator cylinder 1 is open, and a sealing cap 7 is provided on the magnetic rod 2. The sealing cap 7 is detachably fitted to the open end of the iron separator cylinder 1. When the sealing cap 7 is connected to the open end of the iron separator, the magnetic rod 2 and the guide plate 3 are installed in place inside the iron separator cylinder 1. Furthermore, a sealing block is also provided on the sealing cap 7. The sealing block is cylindrical. When the sealing cap 7 is closed on the open end of the iron separator cylinder 1 and connected to the iron separator cylinder 1, the sealing block is inserted into the iron separator cylinder 1. In addition to preventing leakage from the gap of the sealing cap 7 during slurry demagnetization, it also facilitates the alignment of the magnetic rod 2 when it is installed into the iron separator cylinder 1.

[0022] The magnetic rod 2 is made of permanent magnet material and is used to generate a magnetic field to adsorb magnetic impurities in the slurry. The magnetic rod 2 is preferably a magnetic rod with a length of 100mm-1000mm and a magnetic induction intensity of 0.5T-1.2T. The guide plate 3 is preferably a spiral blade with a thickness of 0.5mm-2mm, a pitch of 1-5 times the diameter of the magnetic rod 2, and an inclination angle of 15°-45°. The inner edge of the guide plate 3 is connected to the outer wall of the magnetic rod 2.

[0023] The spiral guide channel can also be configured to be tangent to both the slurry inlet and the slurry outlet 6, which facilitates the smooth flow of the slurry along the spiral guide channel.

[0024] To verify the effectiveness of the iron separator with a spiral flow guiding structure of this invention compared to the existing iron separator without such a structure, the applicant took the same undemagnetized slurry and conducted demagnetization tests using both the present invention's iron separator with a spiral flow guiding structure and the existing iron separator without such a structure. The content of magnetic foreign matter before and after demagnetization was measured to evaluate the iron removal efficiency of the two methods. For detailed results, please refer to [link to relevant documentation]. Figure 3 In the example group, the slurry used was produced by the present invention's iron separator with a spiral flow guiding structure, while the slurry used was produced by a conventional iron separator without a spiral flow guiding structure. Verification showed that the demagnetization efficiency of the present invention's iron separator is more than 38% higher than that of traditional iron separators, and the residual magnetism is reduced to below 30 ppb.

[0025] In this specification, the terms "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tramp iron eliminator with helical flow guiding structure, characterized in that: The device includes a magnetic separator cylinder (1), a magnetic rod (2), and a guide plate (3). The magnetic rod (2) is installed inside the magnetic separator cylinder (1). The guide plate (3) is spirally installed on the magnetic rod (2) along the axial direction. An isolation buffer (4) is installed on the outer plate of the guide plate (3). The guide plate (3) and the isolation buffer (4) form a spiral guide channel between the inner wall of the magnetic separator cylinder (1) and the outer wall of the magnetic rod (2). The magnetic separator cylinder (1) is also provided with a slurry inlet (5) and a slurry outlet (6). The slurry inlet (5) and the slurry outlet (6) are located at both ends of the spiral guide channel and are connected to the spiral guide channel.

2. The trapper with helical flow guide structure according to claim 1, characterized in that: The insulating buffer (4) is made of silicone and it comes into contact with the inner wall of the iron remover cylinder (1).

3. A trapper with helical flow guide structure according to claim 2, characterized in that: The iron removal cylinder (1) is a cylindrical tube with a cylindrical cavity inside and an open end. The magnetic rod (2) is equipped with a sealing cap (7), which is detachably fitted to the open end of the iron removal cylinder (1).

4. The trapper with helical flow guide structure according to claim 2, characterized in that: The pitch of the guide plate (3) is 1-5 times the diameter of the magnetic rod (2), and the tilt angle of the guide plate (3) is 15°-45°.

5. The iron separator with a spiral flow guide structure according to claim 2, characterized in that: The magnetic induction intensity of the magnetic rod (2) is 0.5-1.2T.

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