Lithium iron phosphate production wet-process material mixing and iron removing device

Abstract

The utility model relates to a wet-process material mixing and iron removing device for lithium iron phosphate production, and belongs to the technical field of lithium battery production equipment. The device mainly comprises a rack, a mixing tank, a sealing cover, a first movable door, a second movable door, a discharging hopper, a discharging pipe, a conveying pipe, a manual butterfly valve, a plugging head, a rotating shaft, a supporting plate, a motor, an electromagnetic rod, a spiral stirring blade, a controller and a supporting rod. The device utilizes the adsorbability of the electromagnetic rod and is combined with the motor to drive the spiral stirring blade to rotate to stir slurry, iron impurities in lithium iron phosphate can be effectively removed, compared with a traditional physical filtering method, fine iron particles can be effectively removed, waste liquid and waste gas cannot be generated, and the device is environmentally friendly, simple in structure, convenient to operate and high in practicability. And the iron removal treatment can be carried out only by adding the to-be-treated material into the mixing tank and starting the motor and the electromagnetic rod, so that the device can be suitable for large-scale production, and the application feasibility of lithium iron phosphate in different-scale production is widened.

Description

Technical Field

[0001] This utility model belongs to the technical field of lithium battery production equipment, specifically relating to a wet mixing and iron removal device for lithium iron phosphate production. Background Technology

[0002] Lithium iron phosphate is an electrode material for lithium-ion batteries, mainly used as a raw material for various lithium-ion batteries. During the production process of lithium iron phosphate, the raw materials or production environment may contain iron impurities. These iron impurities will have a negative impact on the quality and performance of the product, such as reducing the battery capacity, cycle life and safety. Therefore, it is necessary to remove iron from lithium iron phosphate.

[0003] Traditional iron removal methods suffer from problems such as low efficiency, unsatisfactory results, or complex operation. For example, physical filtration methods cannot effectively remove fine iron particles, while chemical precipitation methods may introduce other impurities or generate waste liquid treatment problems. At the same time, with the expansion of lithium iron phosphate production scale, traditional iron removal methods cannot meet the needs of large-scale production. Utility Model Content

[0004] To overcome the limitations of traditional physical filtration methods in effectively removing fine iron particles, the problems associated with chemical precipitation introducing other impurities or generating wastewater, and the inability of traditional iron removal methods to meet the demands of large-scale production, this invention provides a wet mixing and iron removal device for lithium iron phosphate production. This device utilizes the adsorption properties of an electromagnetic rod, combined with a motor-driven spiral stirring blade to agitate the slurry, effectively removing iron impurities from lithium iron phosphate. Compared to traditional physical filtration methods, it effectively removes fine iron particles, generates no wastewater or exhaust gas, is environmentally friendly, has a simple structure, and is easy to operate. Simply add the material to be treated to the mixing tank, start the motor and electromagnetic rod, and the iron removal process can begin. It can adapt to large-scale production, broadening the application feasibility of lithium iron phosphate in production at different scales.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A wet mixing and iron removal device for lithium iron phosphate production mainly includes a frame, a mixing tank, a cover, a first movable door, a second movable door, a hopper, a discharge pipe, a conveying pipe, a manual butterfly valve, a sealing head, a rotating shaft, a support plate, a motor, an electromagnetic rod, a spiral stirring blade, a controller, and a support rod. The mixing tank is mounted on the frame, the cover is mounted on the top of the mixing tank, the first and second movable doors are detachably mounted on the cover, the hopper is mounted on the bottom of the mixing tank, a discharge port is opened at the bottom of the hopper, the discharge pipe is installed at the discharge port, and the conveying pipe is installed on... The bottom of the discharge pipe connects the mixing tank, the hopper, the discharge pipe, and the conveying pipe. One end of the conveying pipe is equipped with a manual butterfly valve, and the other end is threaded with a sealing head. The mixing tank has a hollow internal structure. The rotating shaft extends through the cover into the mixing tank. The support plate is installed on the top of the cover, and the motor is installed on the support plate. The rotating shaft is connected to the output end of the motor. The electromagnetic rod and support rod are installed on the rotating shaft, and the spiral stirring blades are installed on the electromagnetic rod and support rod. The controller is installed on the outer wall of the mixing tank. The rotating shaft is a hollow tube with wires installed inside. The wires are connected to the electromagnetic rod, and the motor, electromagnetic rod, and controller are electrically connected.

[0006] The first and second movable doors are mounted on the cover via hinges, and each of the first and second movable doors has a handle at its top.

[0007] The feeding hopper is configured with an inverted conical structure.

[0008] The spiral stirring blades are made of stainless steel.

[0009] Sealing rings are provided at the connection between the mixing tank and the hopper, and at the connection between the hopper and the discharge pipe.

[0010] Multiple electromagnetic rods are provided and are installed at an angle on the rotating shaft.

[0011] The beneficial effects of this utility model are:

[0012] This device utilizes the adsorption properties of an electromagnetic rod, combined with a motor-driven spiral stirring blade to agitate the slurry, effectively removing iron impurities from lithium iron phosphate. Compared to traditional physical filtration methods, it can effectively remove fine iron particles without generating waste liquid or waste gas, making it environmentally friendly. It has a simple structure and is easy to operate. Simply add the material to be treated to the mixing tank, start the motor and electromagnetic rod, and the iron removal process can be carried out. It can adapt to large-scale production, broadening the application feasibility of lithium iron phosphate in production at different scales. Attached Figure Description

[0013] Figure 1 This is an isometric schematic diagram of the present invention.

[0014] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0015] Figure 3 This is another three-dimensional schematic diagram of this utility model.

[0016] Figure 4 This is a schematic diagram of the spiral stirring blade structure of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] This utility model discloses a wet mixing and iron removal device for lithium iron phosphate production. The device mainly includes a frame 1, a mixing tank 2, a cover 3, a first movable door 4, a second movable door 5, a hopper 6, a discharge pipe 7, a conveying pipe 8, a manual butterfly valve 9, a sealing head 10, a rotating shaft 11, a support plate 12, a motor 13, an electromagnetic rod 14, a spiral stirring blade 15, a controller 16, and a support rod 17. The mixing tank 2 is mounted on the frame 1, the cover 3 is mounted on the top of the mixing tank 2, the first movable door 4 and the second movable door 5 are detachably mounted on the cover 3, the hopper 6 is mounted on the bottom of the mixing tank 2, and a discharge port is provided at the bottom of the hopper 6. The discharge pipe 7 is installed at the discharge port, and the conveying pipe 8 is installed at the bottom of the discharge pipe 7. The mixing tank 2, the hopper 6, the discharge pipe 7, and the conveying pipe 8 are interconnected. One end of the conveying pipe 8 is equipped with a manual butterfly valve 9, and the other end is threadedly connected to a sealing head 10. The interior of the mixing tank 2 is designed as a hollow structure. The rotating shaft 11 extends through the cover 3 into the interior of the mixing tank 2. The support plate 12 is installed on the top of the cover 3. The motor 13 is installed on the support plate 12. The rotating shaft 11 is connected to the output end of the motor 13. The electromagnetic rod 14 and the support rod 17 are installed on the rotating shaft 11. The spiral stirring blade 15 is installed on the electromagnetic rod 14 and the support rod 17. The controller 16 is installed on the outer wall of the mixing tank 2. The rotating shaft 11 is a hollow tube. Wires are installed inside the rotating shaft 11. The wires are connected to the electromagnetic rod 14. The motor 13, the electromagnetic rod 14, and the controller 16 are electrically connected.

[0019] Open the first movable door 4 and the second movable door 5 by handle 41, add lithium iron phosphate raw material into the mixing tank 2, close the first movable door 4 and the second movable door 5, start the motor 13 and the electromagnetic rod 14 through the controller 16, the motor 13 drives the rotating shaft 11 to rotate, during the rotation, the spiral stirring blade 15 and the support rod 17 continuously stir the material in the mixing tank 2, so that the material can be fully mixed and rolled, so that the iron impurities in the material can fully contact the electromagnetic rod 14. Since the electromagnetic rod 14 is magnetic, the iron impurities will be attracted by the electromagnetic rod 14, thereby separating them from the material, achieving the purpose of iron removal. The stirring and adsorption time can be set by the controller 16. When the adsorption time is reached, open the manual butterfly valve 9, so that the mixed material is discharged through the conveying pipe 8. After the discharge is completed, close the manual butterfly valve 9, open the sealing 10, and then turn off the power. The iron impurities on the electromagnetic rod 14 fall onto the discharge hopper 6, and then fall into the side of the conveying pipe 8 through the discharge pipe 7 and are discharged. Then the conveying pipe 8 and the discharge pipe 7 are cleaned manually.

[0020] like Figure 1 , Figure 2 , Figure 3 As shown, the first movable door 4 and the second movable door 5 are installed on the cover 3 by hinges. The top of the first movable door 4 and the second movable door 5 are both provided with handles 41. The first movable door 4 and the second movable door 5, which can be detachably installed on the cover 3, can be used to put materials into the mixing tank 2. These two movable doors are installed by hinges and are provided with handles 41 at the top for easy opening and closing.

[0021] like Figure 1 , Figure 2 As shown, the feeding hopper 6 is configured with an inverted cone shape; the inverted cone shape facilitates the smooth falling of materials.

[0022] The spiral stirring blade 15 is made of stainless steel. Stainless steel has good chemical stability, can resist the corrosion of acidic or alkaline substances that may be present during the mixing process, is not easy to rust, and can maintain good performance in humid environments. This helps to maintain the normal operation of the device and avoid impurities such as rust from entering the material and affecting the product quality of lithium iron phosphate. It also has high strength and can withstand the large stirring resistance during the mixing process. When rotating at high speed, it can stably mix the material without easily deforming or breaking, thus ensuring the uniformity and stability of the mixing process.

[0023] The mixing tank 2 is equipped with sealing rings at the connection between the mixing tank 2 and the hopper 6, and at the connection between the hopper 6 and the discharge pipe 7. Due to the sealing effect of the sealing rings, leakage of materials during the flow process can be effectively prevented, ensuring that the materials can be smoothly transferred to subsequent production processes or storage containers.

[0024] like Figure 4As shown, multiple electromagnetic rods 14 are provided and are installed at an angle on the rotating shaft 11; this allows for better adsorption of iron impurities and further improves the impurity adsorption efficiency.

[0025] Work process:

[0026] By opening the first movable door 4 and the second movable door 5 through handle 41, lithium iron phosphate raw material is added to the mixing tank 2. The first movable door 4 and the second movable door 5 are then closed to ensure the mixing tank 2 is sealed. The controller 16 starts the motor 13 and the electromagnetic rod 14. The motor 13 drives the rotating shaft 11 to rotate. During rotation, the spiral stirring blade 15 and the support rod 17 continuously stir the material in the mixing tank 2, ensuring thorough mixing and tumbling. This allows iron impurities in the material to come into full contact with the electromagnetic rod 14. Because the electromagnetic rod 14 is magnetic, the iron impurities are attracted by it. This process separates the iron from the material, achieving the purpose of iron removal. The stirring and adsorption time can be set by the controller 16. When the adsorption time is reached, the manual butterfly valve 9 is opened to allow the mixed material to be discharged through the conveying pipe 8. After discharge, the manual butterfly valve 9 is closed, the plug 10 is opened, and then the power is turned off. The iron impurities on the electromagnetic rod 14 fall onto the hopper 6 and then through the discharge pipe 7 to the side of the conveying pipe 8 for discharge. The conveying pipe 8 and the discharge pipe 7 are then cleaned manually. After the iron impurities are cleaned, the plug head 10 can be installed on the conveying pipe 8 to prepare for the next iron removal operation.

[0027] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A wet mixing and iron removal device for lithium iron phosphate production, characterized in that: The aforementioned wet mixing and iron removal device for lithium iron phosphate production includes a frame (1), a mixing tank (2), a cover (3), a first movable door (4), a second movable door (5), a hopper (6), a discharge pipe (7), a conveying pipe (8), a manual butterfly valve (9), a sealing head (10), a rotating shaft (11), a support plate (12), a motor (13), an electromagnetic rod (14), a spiral stirring blade (15), a controller (16), and a support rod (17). The mixing tank (2) is mounted on the frame (1), the cover (3) is mounted on the top of the mixing tank (2), the first movable door (4) and the second movable door (5) are detachably mounted on the cover (3), the hopper (6) is mounted on the bottom of the mixing tank (2), the hopper (6) has a discharge outlet at the bottom, the discharge pipe (7) is mounted at the discharge port, and the conveying pipe (8) is mounted on the bottom of the discharge pipe (7). The discharge pipe (7) and the conveying pipe (8) are interconnected. One end of the conveying pipe (8) is equipped with a manual butterfly valve (9), and the other end is threaded with a sealing head (10). The mixing tank (2) is set with a hollow structure. The rotating shaft (11) extends through the cover (3) to the inside of the mixing tank (2). The support plate (12) is installed on the top of the cover (3). The motor (13) is installed on the support plate (12). The rotating shaft (11) is connected to the output end of the motor (13). The electromagnetic rod (14) and the support rod (17) are installed on the rotating shaft (11). The spiral stirring blade (15) is installed on the electromagnetic rod (14) and the support rod (17). The controller (16) is installed on the outer wall of the mixing tank (2). The rotating shaft (11) is set with a hollow tube. The rotating shaft (11) is equipped with wires. The wires are connected to the electromagnetic rod (14). The motor (13), the electromagnetic rod (14) and the controller (16) are electrically connected.

2. The wet mixing and iron removal device for lithium iron phosphate production as described in claim 1, characterized in that: The first movable door (4) and the second movable door (5) are installed on the cover (3) by hinges, and the top of the first movable door (4) and the second movable door (5) are both provided with handles (41).

3. A wet mixing and iron removal device for lithium iron phosphate production as described in claim 1 or 2, characterized in that: The feeding hopper (6) is configured as an inverted cone shape.

4. A wet mixing and iron removal device for lithium iron phosphate production as described in claim 1 or 2, characterized in that: The spiral stirring blade (15) is made of stainless steel.

5. A wet mixing and iron removal device for lithium iron phosphate production as described in claim 1 or 2, characterized in that: Sealing rings are provided at the connection between the mixing tank (2) and the feeding hopper (6), and at the connection between the feeding hopper (6) and the discharge pipe (7).

6. A wet mixing and iron removal device for lithium iron phosphate production as described in claim 1 or 2, characterized in that: Multiple electromagnetic rods (14) are provided and are installed at an angle on the rotating shaft (11).

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