Wet type demagnetizing equipment

Abstract

The utility model belongs to the field of powder impurity removal, and particularly relates to wet type demagnetizing equipment. The utility model relates to wet type demagnetizing equipment, which comprises a shell, a demagnetizing device, a demagnetizing device, a demagnetizing device and a demagnetizing device, the upper end cover is attached to the shell on the upper portion; the magnetic rod fixing plate is positioned above the upper end cover and is fixedly connected with a plurality of vertically arranged magnetic rods; the number of the magnetic bar sleeves is equal to that of the magnetic bars, the magnetic bar sleeves are fixed in the cavity of the shell, and the magnetic bars can penetrate through the upper end cover to be inserted into the corresponding magnetic bar sleeves; the slurry inlet, the slurry outlet and the drain outlet are arranged in parallel, the slurry inlet and the slurry outlet are arranged on one side of the shell, and the drain outlet is arranged on the other side of the shell; and the magnetic bar fixing plate drives the magnetic bar to move up and down in the corresponding magnetic bar sleeve through a lifting device. According to the utility model, positive electrode material particles can be dispersed, the magnetic bar is made of a permanent magnet material and does not need to be magnetized and demagnetized, the equipment structure is simplified, and the equipment is small in size, light in weight and wide in application range.

Description

Technical Field

[0001] This utility model belongs to the field of powder impurity removal, specifically relating to a wet demagnetizing device. Background Technology

[0002] Magnetic metallic impurities are inevitably introduced during the preparation of cathode materials for lithium-ion batteries. These impurities can severely affect battery performance and safety, especially ferrous impurities, which can promote self-discharge reactions, leading to capacity decay, thermal runaway, and even safety accidents. Furthermore, ferrous impurities may participate in side reactions within the battery, thereby impacting energy efficiency and cycle stability.

[0003] To ensure the purity and electrochemical performance of the final material, pipeline demagnetizers and electromagnetic demagnetizers are commonly used in the preparation of cathode materials. However, these two types of demagnetizing equipment have complex structures, limited applications, and low demagnetizing efficiency. Therefore, it is of great significance to research and develop a new type of efficient and convenient demagnetizing equipment. Summary of the Invention

[0004] In order to overcome the problems of low efficiency and complex application of existing powder demagnetization equipment, this utility model provides a wet demagnetization device. The device has a simple structure, obvious demagnetization effect, and can significantly reduce the cost of powder material demagnetization.

[0005] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0006] A wet demagnetizing device, comprising:

[0007] The housing includes a slurry inlet, a slurry outlet, and a drain outlet;

[0008] The top cover fits snugly against the housing from above;

[0009] A magnetic rod fixing plate is located above the upper end cover and is fixed with several vertically arranged magnetic rods.

[0010] A number of magnetic rod sleeves, equal to the number of magnetic rods, are fixed in the cavity of the housing. The magnetic rods can pass through the upper end cover and be inserted into the corresponding magnetic rod sleeves.

[0011] The slurry inlet, slurry outlet, and sewage outlet are arranged in parallel, with the slurry inlet and slurry outlet located on one side of the shell and the sewage outlet located on the other side of the shell;

[0012] The magnetic rod fixing plate is driven by a lifting device to move the magnetic rod up and down in its corresponding magnetic rod sleeve.

[0013] Furthermore, the upper cover is provided with one or more spray devices.

[0014] Furthermore, it also includes an inlet orifice plate, an outlet orifice plate, and a rear orifice plate, wherein the inlet orifice plate is close to the slurry inlet; the outlet orifice plate is close to the slurry outlet; and the rear orifice plate is close to the drain outlet.

[0015] Furthermore, the diameter of the inlet orifice plate is smaller than the diameter of the outlet orifice plate.

[0016] Furthermore, the inlet orifice plate and the outlet orifice plate are disposed on one side of the magnetic rod sleeve, and the rear orifice plate is disposed on the other side of the magnetic rod sleeve.

[0017] Furthermore, the inlet orifice plate, outlet orifice plate, and rear orifice plate do not contact the bottom surface of the housing.

[0018] Furthermore, it also includes a vertical partition placed in the cavity of the housing, dividing the cavity of the housing into an inlet working area and an outlet working area.

[0019] Furthermore, the magnetic rod sleeve is separated by the partition plate and is symmetrically located on both sides of the partition plate.

[0020] Furthermore, the bottom surface of the housing is formed into a cross-section, and the drain outlet is located on the side of the housing with the lower cross-section.

[0021] Furthermore, the magnetic rod sleeves are arranged alternately in the cavity of the housing.

[0022] The beneficial effects of this utility model are as follows:

[0023] This invention relates to a wet demagnetizing device. The liquid slurry disperses the positive electrode material particles, ensuring full contact between the magnetic particles and the magnetic rods. The magnetic rods are made of permanent magnet material, eliminating the need for magnetization and demagnetization. This simplifies the device structure, resulting in a small, lightweight, and widely applicable device. The number and spacing of magnetic rods can be varied according to requirements to maximize the demagnetizing effect. Furthermore, collected magnetic foreign matter does not accumulate on the magnetic rods, facilitating cleaning. The device can operate continuously and automatically, improving efficiency and saving costs for businesses. Attached Figure Description

[0024] Figure 1 This is an external top view of the present invention;

[0025] Figure 2 This is an external front view of the present invention;

[0026] Figure 3 This is an internal side sectional view of the present invention;

[0027] Figure 4 This is a parameter diagram of this utility model;

[0028] Figure 5 This is a schematic diagram of the inlet / outlet orifice plate of this utility model.

[0029] 1-Magnetic rod fixing plate, 2-Upper end cover, 3-Housing shell, 4-Inlet orifice plate, 5-Outlet orifice plate, 6-Rear orifice plate, 7-Magnetic rod sleeve, 8-Magnetic rod, 9-Slurry inlet, 10-Slurry outlet, 11-Drainage outlet, 12-Baffle plate Detailed Implementation

[0030] The specific embodiments of this utility model are described in detail below. Examples of the physical embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] Figure 1 and Figure 2 The external structure of this utility model is shown. Figure 1 This is a top view of the present invention. The magnetic rod fixing plate 1 is located above the upper end cover 2, and the upper end cover 2 is located on the housing 3. Figure 1 Above (not shown), the slurry inlet 9 and slurry outlet 10 are located parallel to each other on one side of the magnetic rod fixing plate 1, and the drain outlet 11 is located on the other side of the magnetic rod fixing plate 1 and is parallel to the slurry inlet 9 and slurry outlet 10. Figure 2 This is a front view of the present invention. 44 magnetic rods 8 are fixedly connected to the magnetic rod fixing plate 1. The upper end cover 2 is tightly fitted to the housing 3, with sufficient space in the upper end cover 2 to allow the magnetic rods 8 to penetrate deep into the internal cavity of the housing 3. The inlet orifice plate 4 is close to the slurry inlet 9, and the outlet orifice plate 5 is close to the slurry outlet 10. The diameter of the orifice plate 4 is smaller than the diameter of the orifice plate 5. In embodiments not shown, the number of magnetic rods 8 can be set according to actual needs.

[0032] Figure 3 This shows a side sectional view of the present invention, with partition 12 ( Figure 3 (Not shown) A vertical magnetic rod fixing plate 1 is located inside the cavity of the housing 3, dividing the cavity into an inlet working area and an outlet working area. An inlet orifice plate 4 and an outlet orifice plate 5 are located on one side of the magnetic rod 8, and a rear orifice plate 6 is located on the other side of the magnetic rod 8. Each orifice plate is used to reduce the slurry flow rate. An equal number of magnetic rod sleeves 7 are fixed in the cavity of the housing 3, and the magnetic rod sleeves 7 will not move due to slurry flow or movement of the magnetic rod 8. The magnetic rod 8 is located inside the magnetic rod sleeves 7, and all magnetic rods 8 and magnetic rod sleeves 7 are separated from each other by a partition 12 in the same manner, symmetrically located on both sides of the partition 12. A spray device is provided on the upper cover plate 2. Figure 3 (Not shown), used to flush the magnetic material on the magnetic rod sleeve 7. The bottom surface of the cavity of the housing 3 has a cross-section structure, so that sewage can easily flow out from the drain port 11 when the equipment finishes working.

[0033] refer to Figure 1 , Figure 2 and Figure 3 This document describes the specific workflow of an embodiment of the present invention. During operation, the magnetic rod fixing plate 1 and the magnetic rod 9 are inserted into the magnetic rod sleeve 7 under the action of the lifting device (not shown in the figure), and the drain port 11 is in a closed state. The slurry enters the inlet working area from the slurry inlet 9. The slurry flows through the inlet orifice plate 4 in the inlet working area, which reduces the slurry flow rate and makes the overall flow uniform, which is conducive to the subsequent adsorption of magnetic foreign objects. The slurry flows through the magnetic rod sleeve 7 at a low flow rate. Under the magnetic force of the magnetic rod 8, the magnetic foreign objects are adsorbed onto the magnetic rod sleeve 7. Four rows of magnetic rods 8 are arranged alternately in the inlet working area to achieve a better demagnetization effect. Subsequently, the slurry flows into the vicinity of the drain port from the rear orifice plate 6. Since the drain port is in a closed state, the slurry will flow into the outlet working area again from the rear orifice plate 6. The two flows through the rear orifice plate 6 will further slow down the slurry speed. After the slurry flows into the outlet working area, the magnetic rod sleeve 7 will further adsorb magnetic foreign objects under the magnetic force of the magnetic rod 8, achieving a further demagnetization effect. The demagnetized slurry will flow through the outlet orifice plate 5 and finally out of the slurry outlet 10, thus completing a whole working cycle.

[0034] After the working cycle is completed, a sufficient number of magnetic foreign objects adsorbed on the surface of the magnetic rod sleeve 7 affect the adsorption effect, at which point the cleaning cycle begins. The slurry inlet 9 and slurry outlet 10 are closed, and the drain outlet 11 is opened. The magnetic rod fixing plate 1 and the magnetic rod 8 are lifted and detached from the magnetic rod sleeve 7 by the lifting device. At this point, due to the loss of magnetism, the magnetic foreign objects on the surface of the magnetic rod sleeve 7 begin to fall off. A varying number of spray devices installed on the inner surface of the upper end cover 2 are activated, spraying and cleaning the surface of the magnetic rod sleeve 7, causing the magnetic foreign objects to flow out with the cleaning fluid through the drain outlet 11. After cleaning, the magnetic rod 8 falls back to its working position, thus completing one cleaning cycle. The working cycle can then begin again.

[0035] Figure 4 This illustration shows an application dimension of an embodiment of the present invention. The diameter of the magnetic rods 8 is 27mm, and they are arranged in an alternating pattern, with a distance of 70mm between adjacent magnetic rods 8. The inner diameters of the slurry inlet 9, slurry outlet 10, and drain outlet 11 are 100mm, the overall height of the equipment is 495mm, and the outer diameter of the shell 3 is 812mm. To ensure uniform flow of the slurry in the working area, such as... Figure 5As shown, the inlet perforated plate 4 has a small through hole at the slurry inlet 9, with a diameter of 15mm and a spacing of 30mm. At other locations, the hole diameter is 30mm and the spacing is 45mm. To ensure complete removal of magnetic foreign matter during cleaning, the bottom of the cavity of the housing adopts a slit structure with an inclination angle of 5.5°. The perforated plate does not contact the bottom surface; in this embodiment, the perforated plate is 20mm from the bottom surface. This equipment can be configured with different specifications, quantities, and arrangements of magnetic rods to ensure optimal demagnetization. The adsorption and cleaning times can be set according to the magnetic foreign matter content of the slurry, the impurity removal effect, and actual usage. After a certain time, the equipment automatically switches between adsorption and cleaning modes, requiring no human supervision and exhibiting a high degree of automation.

[0036] The foregoing description has fully disclosed the specific embodiments of this utility model. It should be noted that any modifications made to the specific embodiments of this utility model by those skilled in the art do not depart from the scope of the claims. Accordingly, the scope of the claims of this utility model is not limited to the foregoing specific embodiments.

Claims

1. A wet-type magnetic removal apparatus characterized by comprising: The application relates to a slurry treatment device, which comprises the following parts: a shell containing a slurry inlet, a slurry outlet and a waste outlet; an upper end cover adhering to the shell at the top; a magnetic rod fixing plate located above the upper end cover and fixed with a plurality of vertically arranged magnetic rods; a same number of magnetic rod sleeves as the magnetic rods, which are fixed in the cavity of the shell, and the magnetic rods can be inserted into the corresponding magnetic rod sleeves through the upper end cover; the slurry inlet, the slurry outlet and the waste outlet are arranged in parallel, wherein the slurry inlet and the slurry outlet are arranged on one side of the shell, and the waste outlet is arranged on the other side of the shell; the magnetic rod fixing plate drives the magnetic rods to move up and down in the corresponding magnetic rod sleeves through a lifting device.

2. The wet demagnetization apparatus according to claim 1, characterized by, The upper end cover is provided with one or more spraying devices.

3. The wet demagnetization apparatus according to claim 1, characterized by, The device further comprises an inlet hole plate, an outlet hole plate and a rear hole plate, wherein the inlet hole plate is close to the slurry inlet; the outlet hole plate is close to the slurry outlet; and the rear hole plate is close to the waste outlet.

4. The wet demagnetization apparatus according to claim 3, characterized by The aperture of the inlet hole plate is smaller than that of the outlet hole plate.

5. The wet demagnetization apparatus according to claim 3 or 4, characterized by, The inlet hole plate and the outlet hole plate are arranged on one side of the magnetic rod sleeves, and the rear hole plate is arranged on the other side of the magnetic rod sleeves.

6. The wet demagnetization apparatus according to claim 3 or 4, characterized by The inlet hole plate, the outlet hole plate and the rear hole plate are not in contact with the bottom surface of the shell.

7. The wet demagnetization apparatus according to claim 1, wherein The device further comprises a vertical partition plate arranged in the cavity of the shell, which divides the cavity of the shell into an inlet working area and an outlet working area.

8. The wet demagnetization apparatus according to claim 7, characterized by The magnetic rod sleeves are symmetrically arranged on both sides of the partition plate.

9. The apparatus of claim 1, wherein, The bottom surface of the shell forms a tangent plane, and the waste outlet is arranged on the side of the shell with a lower tangent plane.

10. The apparatus of claim 1, wherein, The magnetic rod sleeves are staggered arranged in the cavity of the shell.

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