A device for removing iron and defoaming of lithium ion battery slurry

Abstract

The utility model discloses a device for lithium ion battery slurry iron removal defoaming, including the jar body, the inner wall of jar body is opposite and is provided with many magnetic tilt baffle, and the low point of any baffle is located above the high point of the baffle of opposite setting, and the connecting place of the baffle of setting in the highest point and jar body is provided with the inlet, and the bottom of jar body is provided with the discharge gate, and the application can complete the process of defoaming and iron removal simultaneously, improves the overall work efficiency, and further improves the effect of iron removal through the setting of many tilt baffles.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery manufacturing equipment, and in particular to a device for removing iron and degassing lithium-ion battery slurry. Background Technology

[0002] In the production process of lithium-ion batteries, active materials, conductive agents, binders, etc., need to be mixed to prepare a slurry, which is then coated onto a current collector. The prepared slurry needs to pass through a degassing and iron removal device before being fed into the coating die of a coating machine for coating. Traditional degassing methods involve slow stirring in a tank followed by vacuuming to remove air bubbles from the slurry, which takes a long time. The slurry then passes through a tank containing one or more permanent magnets for iron removal, making the entire process too time-consuming. Furthermore, the limited contact area between the slurry and the permanent magnets affects the iron removal effect. To address these issues, this application proposes a solution. Summary of the Invention

[0003] Purpose of the utility model: The purpose of this utility model is to provide a device for iron removal and degassing of lithium-ion battery slurry, which can improve the efficiency of slurry degassing and iron removal, and at the same time improve the iron removal effect.

[0004] Technical solution: The present invention provides a device for removing iron and degassing lithium-ion battery slurry, comprising a tank, wherein multiple magnetic inclined baffles are arranged facing each other on the inner wall of the tank, wherein the low point of any baffle is located above the high point of the opposing baffle, an inlet is provided at the connection between the baffle at the highest point and the tank, and an outlet is provided at the bottom of the tank.

[0005] Multiple baffles arranged in opposite directions guide the slurry from the higher baffles to the lower baffles. During this process, the magnetic baffles adsorb iron impurities in the slurry, thus completing the iron removal process.

[0006] Preferably, the baffle is a hollow structure, with one end inside the tank being a sealed structure and the other end connected to the inner wall of the tank communicating with the outside. A pluggable permanent magnet is installed inside the hollow structure of the baffle.

[0007] A permanent magnet is placed inside the hollow structure of the baffle to ensure that the baffle is magnetic. When cleaning is required, the permanent magnet is removed to eliminate the magnetism of the baffle and facilitate cleaning.

[0008] Preferably, a baffle plate is provided at the feed inlet, the baffle plate is inclined toward the baffle, and a slit is formed between the low point of the baffle plate and the upper end surface of the baffle.

[0009] The baffle plate can evenly distribute the slurry entering from the feed port onto the entire end face of the baffle plate, forming a thin liquid layer flowing rather than all concentrated in one place, which makes it impossible for the magnetic baffle plate to completely adsorb iron impurities in the slurry.

[0010] Preferably, the distance between the lowest point of the baffle and the upper surface of the opposing baffle is set between 3 cm and 5 cm.

[0011] Setting the 3CM-5CM setting can prevent air bubbles from forming during the flow and dripping of the slurry.

[0012] Preferably, the opposing baffles are located on the same side of the tank, and an openable and closable sealing window is provided on the inner wall of the tank on the other side.

[0013] The openable and closable sealed window is used for subsequent cleaning of the tank. The baffle is set on the same side of the tank, and the openable and closable sealed window on the other side makes it easy for the operator to clean the baffle.

[0014] Preferably, the top of the tank is provided with a vacuum port, which is connected to an external vacuuming device.

[0015] This allows the tank to have the ability to create a vacuum during the adsorption of iron impurities, thus degassing the slurry.

[0016] Preferably, the tank is equipped with a vacuum gauge for detecting the internal pressure of the tank.

[0017] The vacuum gauge can monitor the internal pressure of the tank at all times and control the degassing process inside the tank.

[0018] Beneficial effects: Compared with the prior art, this utility model has the following advantages:

[0019] This application can complete the degassing and iron removal processes simultaneously, improving overall work efficiency. Furthermore, the iron removal effect is further enhanced by the installation of multiple inclined baffles. Attached Figure Description

[0020] Figure 1 This is a front sectional view of the present invention.

[0021] Figure 2 This is a top sectional view of the present invention. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0023] See appendix Figures 1-2Figure shows the device for iron removal and degassing of lithium-ion battery slurry according to this utility model. It includes a tank 1, and multiple magnetic inclined baffles 2 are arranged facing each other on the inner wall of the tank 1. The low point of any baffle 2 is located above the high point of the opposing baffle 2. An inlet 3 is provided at the connection between the baffle 2 at the highest point and the tank 1. An outlet 4 is provided at the bottom of the tank 1.

[0024] Multiple baffles 2 arranged in opposite directions guide the slurry from the higher baffle 2 to the lower baffle 2. During this process, the magnetic baffles 2 adsorb iron impurities in the slurry onto the baffles 2, thereby completing the iron removal work.

[0025] In this embodiment, the baffle 2 has a hollow structure. One end of the baffle 2 located inside the tank 1 is a sealed structure, and the other end connected to the inner wall of the tank 1 is connected to the outside. A removable permanent magnet 5 is installed inside the hollow structure of the baffle 2. The permanent magnet 5 is placed inside the hollow structure of the baffle 2 to ensure that the baffle 2 has magnetism. When cleaning is required, the permanent magnet 5 is removed to eliminate the magnetism of the baffle 2, making it easy to clean.

[0026] In this embodiment, a baffle plate 6 is provided at the feed inlet 3. The baffle plate 6 is inclined toward the baffle plate 2. A slit is formed between the lowest point of the baffle plate 6 and the upper end face of the baffle plate 2. The baffle plate 6 can evenly distribute the slurry entering from the feed inlet 3 onto the entire end face of the baffle plate 2, forming a thin liquid layer flowing rather than being concentrated in one place. This causes the magnetic baffle plate 2 to be unable to completely adsorb iron impurities in the slurry.

[0027] In this embodiment, the distance between the lowest point of the baffle 2 and the upper surface of the opposite baffle 2 is set between 3CM and 5CM. This height difference can prevent air bubbles from being generated during the flow and dripping of the slurry.

[0028] In this embodiment, the opposing baffles 2 are located on the same side of the tank 1, and the inner wall of the tank 1 on the other side is provided with an openable and closable sealing window. The openable and closable sealing window is used for subsequent cleaning of the tank 1. By setting the baffles 2 on the same side of the tank 1, the openable and closable sealing window on the other side can be opened to utilize the reserved space, making it convenient for operators to clean the baffles 2.

[0029] In this embodiment, a vacuum port 7 is provided on the top of the tank 1. The vacuum port 7 is connected to an external vacuuming device, so that the tank 1 has the ability to vacuum during the adsorption of iron impurities and to degas the slurry.

[0030] In this embodiment, a vacuum gauge 8 is provided on the tank 1 to detect the internal pressure of the tank 1. The vacuum gauge 8 can monitor the internal pressure of the tank 1 at all times and control the degassing process inside the tank 1.

Claims

1. An apparatus for iron removal and degassing of lithium-ion battery slurry, comprising a tank (1), characterized in that: The inner wall of the tank (1) is provided with multiple magnetic inclined baffles (2) facing each other. The low point of any baffle (2) is located above the high point of the opposing baffle (2). The connection between the baffle (2) at the highest point and the tank (1) is provided with a feed inlet (3). The bottom of the tank (1) is provided with a discharge outlet (4).

2. The apparatus for iron removal and degassing of lithium-ion battery slurry according to claim 1, characterized in that: The baffle (2) is a hollow structure. One end of the baffle (2) inside the tank (1) is a sealed structure, and the other end connected to the inner wall of the tank (1) is connected to the outside. A pluggable permanent magnet (5) is installed inside the hollow structure of the baffle (2).

3. The apparatus for iron removal and degassing of lithium-ion battery slurry according to claim 1, characterized in that: A baffle plate (6) is provided at the feed inlet (3). The baffle plate (6) is inclined toward the baffle (2). A slit is formed between the lowest point of the baffle plate (6) and the upper end face of the baffle (2).

4. The apparatus for iron removal and degassing of lithium-ion battery slurry according to claim 1, characterized in that: The distance between the lowest point of the baffle (2) and the upper surface of the baffle (2) facing each other is set between 3CM and 5CM.

5. The apparatus for iron removal and degassing of lithium-ion battery slurry according to claim 1, characterized in that: The opposing baffles (2) are located on the same side of the tank (1), and the inner wall of the tank (1) on the other side is provided with an openable and closable sealing window.

6. The apparatus for iron removal and degassing of lithium-ion battery slurry according to claim 1, characterized in that: The top of the tank (1) is provided with a vacuum port (7), which is connected to an external vacuuming device.

7. The apparatus for iron removal and degassing of lithium-ion battery slurry according to claim 1, characterized in that: The tank (1) is equipped with a vacuum gauge (8) for detecting the internal pressure of the tank (1).

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