Composite feeding pipe for synthesizing ternary precursor of lithium battery

Abstract

The composite feed pipe comprises a feed liquid pipe, the bottom of the feed liquid pipe is fixedly communicated with a butt joint pipe, the interior of the butt joint pipe is fixedly connected with a first flow guide plate and a second flow guide plate, the outer wall of the butt joint pipe is fixedly communicated with a connector, and the first flow guide plate and the second flow guide plate are fixedly connected with the outer wall of the butt joint pipe. And one end of the connector is fixedly communicated with an air pipe. Through the arrangement of the first flow guide plate, the negative pressure cavity, the second flow guide plate, the connector, the gas pipe and the injection pipe, the flowing cross sectional area is reduced, so that the flowing speed of feed liquid is increased, and meanwhile nitrogen is driven to be sucked into the butt joint pipe from the gas pipe; by arranging the fixed disc, the circular ring, the annular block, the butt joint ring, the annular rack, the butt joint disc, the perforation hole and the gear, other feed liquid in the reaction kettle can be mixed, the reaction speed is increased, the water outlet cross sectional area of the perforation hole is further changed, and the flow speed of the discharge of the feed liquid is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery material preparation, in particular to a composite feed pipe for synthesizing a ternary precursor of a lithium battery. Background Art

[0002] Ternary precursors are the key raw materials for the preparation of ternary positive electrode materials; in the lithium battery positive electrode industry chain, the final performance of the positive electrode material will inherit the morphological and structural characteristics of its precursor, and the quality of the precursor directly determines the physical and chemical indicators of the positive electrode sintered product; the main raw materials of the ternary precursor include nickel sulfate, cobalt sulfate, manganese sulfate and sodium hydroxide. In order to prevent the metal ions from being oxidized, the precursor preparation process needs to be under the protection of the inert gas nitrogen.

[0003] After searching, the patent document with publication number: CN216987576U discloses a composite feed pipe for the synthesis of lithium battery ternary precursors, including a feed pipe, a feed port and a discharge port are formed at both ends of the feed pipe, the feed port is connected to the discharge port, and a feed channel is formed between the feed port and the discharge port, and the feed channel is used for the transportation of raw materials; an air pipe is arranged on the feed pipe, one end of the air pipe is connected to the feed channel, and the other end of the air pipe is connected to an external gas device for ventilating the feed pipe to realize discharge control. The utility model is a composite feed pipe for the synthesis of lithium battery ternary precursors, which has a simple overall structure, more uniform material reaction, larger feed flow rate, greater flow rate, and higher material filling degree inside the feed pipe.

[0004] The above-mentioned composite feed pipe can effectively accelerate the flow rate of the feed liquid by making the nitrogen outlet direction consistent with the material flow direction. When the feed liquid in the composite feed pipe flows, there is a certain pressure inside. When nitrogen enters, the pressure needs to be overcome to prevent backflow. When more feed liquid needs to enter the reactor completely, the amount of nitrogen flushed into the reactor needs to be sufficient, otherwise the flow rate of the feed liquid cannot be accelerated. However, when the amount of nitrogen filled into the reactor cannot continue to increase, the subsequent remaining feed liquid cannot accelerate the flow rate. Therefore, we propose a composite feed pipe for the synthesis of lithium battery ternary precursors to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a composite feed tube for synthesizing ternary precursors for lithium batteries.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A composite feed pipe for the synthesis of ternary precursors of lithium batteries, including a liquid material pipe. The bottom of the liquid material pipe is fixedly communicated with a docking pipe. A first guide plate and a second guide plate are fixedly connected inside the docking pipe. A connector is fixedly communicated with the outer wall of the docking pipe. One end of the connector is fixedly communicated with an air pipe. The bottom of the docking pipe is fixedly communicated with a spray pipe. An adjusting structure is arranged inside the spray pipe.

[0008] Preferably, the adjusting structure includes a fixed disk. The inner wall of the spray pipe is fixedly connected with the outer wall of the fixed disk. The outer wall of the spray pipe is fixedly connected with a circular ring. An annular groove is opened at the bottom of the circular ring. The inner wall of the annular groove is rotatably connected with an annular block. The bottom of the annular block is fixedly connected with a docking ring. An annular rack is fixedly sleeved on the outer wall of the docking ring. The top of the docking ring is fixedly connected with a docking disk. A plurality of injection holes are evenly opened on the outer walls of the docking disk and the fixed disk. By setting the docking disk, the discharge speed of the liquid material is changed.

[0009] Preferably, a negative pressure cavity is arranged between the first guide plate and the second guide plate. When a negative pressure environment is generated in the negative pressure cavity, nitrogen is inhaled into the docking pipe.

[0010] Preferably, the top of the docking disk is slidably connected with the bottom of the fixed disk.

[0011] Preferably, an electronic valve is fixedly installed on the outer wall of the air pipe. The outer wall of the annular rack is meshed with a gear. The gear is rotated by an existing driving device, and the driving device is installed on the outer wall of the reaction kettle. The electronic valve is set to be opened and closed to prevent nitrogen from flowing into the docking pipe by itself.

[0012] Preferably, the outer wall of the docking disk is slidably connected with the inner wall of the spray pipe.

[0013] Compared with the prior art, the advantages of the present utility model are as follows:

[0014] In this solution, by setting the first guide plate, negative pressure cavity, second guide plate, connector, air pipe and spray pipe, due to the reduction of the flow cross-sectional area, the flow rate of the liquid material will increase accordingly, and at the same time, it drives nitrogen to be inhaled into the docking pipe from the air pipe;

[0015] By setting the fixed disk, circular ring, annular block, docking ring, annular rack, docking disk, injection holes and gear, it plays a role in mixing other liquid materials in the reaction kettle, speeds up the reaction speed, and further changes the water discharge cross-sectional area of the injection holes to increase the flow rate when the liquid material is discharged. Description of the Drawings

[0016] To more clearly illustrate the technical solution of the present utility model, the following will briefly introduce the drawings required for use in the description of the specific implementation. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 Schematic three-dimensional structure diagram of a composite feed pipe for the synthesis of ternary precursors of lithium batteries proposed by the present utility model;

[0018] Figure 2 Schematic cross-sectional structure diagram of a composite feed pipe for the synthesis of ternary precursors of lithium batteries proposed by the present utility model;

[0019] Figure 3 For a composite feed pipe for the synthesis of ternary precursors of lithium batteries proposed by the present utility model Figure 2 Enlarged structure diagram of part A in

[0020] In the figure: 1, liquid feed pipe; 2, docking pipe; 3, first deflector; 4, negative pressure chamber; 5, second deflector; 6, connector; 7, air pipe; 8, injection pipe; 9, fixed disk; 10, ring; 11, annular block; 12, docking ring; 13, annular rack; 14, docking disk; 15, injection hole; 16, gear. Specific implementation

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than 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 efforts belong to the scope of protection of the present utility model.

[0022] As Figures 1 - 3 shown, it relates to a composite feed pipe for the synthesis of ternary precursors of lithium batteries, including a liquid feed pipe 1. The bottom of the liquid feed pipe 1 is fixedly interconnected with a docking pipe 2. The inside of the docking pipe 2 is fixedly connected with a first deflector 3 and a second deflector 5. When the liquid feed passes through the first deflector 3 and the second deflector 5, due to the Venturi effect, when the flow cross-sectional area decreases, the flow velocity will increase accordingly, and the flow velocity of the liquid feed will increase. There is a negative pressure chamber 4 between the first deflector 3 and the second deflector 5.

[0023] A connector 6 is fixedly connected to the outer wall of the butt-joint tube 2, one end of the connector 6 is fixedly connected to an air pipe 7, an electronic valve is fixedly installed on the outer wall of the air pipe 7, the electronic valve controls the opening and closing of the air pipe 7, so that nitrogen enters the butt-joint tube 2 and is metered through an existing metering valve to avoid excessive nitrogen, and an injection pipe 8 is fixedly connected to the bottom of the butt-joint tube 2.

[0024] An adjustment structure is provided inside the injection pipe 8, and the adjustment structure includes a fixed plate 9. The inner wall of the injection pipe 8 is fixedly connected to the outer wall of the fixed plate 9. A circular ring 10 is fixedly connected to the outer wall of the injection pipe 8. An annular groove is provided at the bottom of the circular ring 10. An annular block 11 is rotatably connected to the inner wall of the annular groove. The annular groove and the annular block 11 assist the docking ring 12 to rotate. The bottom of the annular block 11 is fixedly connected to the docking ring 12, and an annular rack 13 is fixedly provided on the outer wall of the docking ring 12.

[0025] The outer wall of the annular rack 13 is meshedly connected with a gear 16, and the gear 16 is rotated by an existing driving device, thereby driving the annular rack 13 to rotate. The top of the docking ring 12 is fixedly connected with a docking plate 14. After the docking ring 12 rotates, it is relatively staggered with the fixed plate 9, so that the upper and lower multiple perforations 15 are staggered, so that the outflow speed of the liquid is increased, similar to the principle of an existing shower head, the outer wall of the docking plate 14 is slidably connected to the inner wall of the injection pipe 8, the top of the docking plate 14 is slidably connected to the bottom of the fixed plate 9, and the outer walls of the docking plate 14 and the fixed plate 9 are evenly provided with multiple perforations 15.

[0026] Working principle: When in use, the feed liquid enters the butt joint pipe 2 through the feed liquid pipe 1. When the feed liquid passes through the first guide plate 3 and the second guide plate 5, the flow cross-sectional area decreases and the flow velocity increases accordingly. The increase in flow velocity leads to a decrease in fluid pressure, which results in a negative pressure environment being formed in the negative pressure chamber 4, driving nitrogen to be sucked into the butt joint pipe 2 from the air pipe 7. As the feed liquid enters the reactor, there is no need to transport nitrogen into the reactor through additional equipment. It is only necessary to control the rated amount of nitrogen. At the same time, the feed liquid enters the injection pipe 8, and when the feed liquid passes through a plurality of perforations 15, the mixed liquid of the feed liquid and nitrogen is ejected in the form of a jet, which plays a mixing role for other feed liquids in the reactor and accelerates the reaction speed. After the gear 16 is rotated by the existing driving device, the annular rack 13 is driven to rotate, and the rotation of the annular rack 13 drives the butt joint plate 14 to rotate. The perforations 15 on the butt joint plate 14 and the perforations 15 on the fixed plate 9 are staggered with each other, further changing the water outlet cross-sectional area of ​​the perforations 15 and increasing the flow velocity.

[0027] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to only the specific implementation manners. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A composite feed pipe for synthesis of lithium battery ternary precursors, comprising a feed liquid pipe (1), characterized in that: The bottom of the liquid feed pipe (1) is fixedly connected with a butt joint pipe (2), the interior of the butt joint pipe (2) is fixedly connected with a first guide plate (3) and a second guide plate (5), the outer wall of the butt joint pipe (2) is fixedly connected with a connector (6), one end of the connector (6) is fixedly connected with an air pipe (7), the bottom of the butt joint pipe (2) is fixedly connected with an injection pipe (8), and an adjustment structure is provided inside the injection pipe (8).

2. A composite feed tube for synthesis of lithium battery ternary precursors according to claim 1, characterized in that: The adjustment structure comprises a fixed plate (9), the inner wall of the injection pipe (8) is fixedly connected to the outer wall of the fixed plate (9), the outer wall of the injection pipe (8) is fixedly connected to a circular ring (10), the bottom of the circular ring (10) is provided with an annular groove, the inner wall of the annular groove is rotatably connected to an annular block (11), the bottom of the annular block (11) is fixedly connected to a docking ring (12), the outer wall of the docking ring (12) is fixedly sleeved with an annular rack (13), the top of the docking ring (12) is fixedly connected to a docking plate (14), and the docking plate (14) and the outer wall of the fixed plate (9) are evenly provided with a plurality of perforations (15).

3. A composite feed tube for synthesis of lithium battery ternary precursors according to claim 1, characterized in that: A negative pressure chamber (4) is provided between the first guide plate (3) and the second guide plate (5).

4. A composite feed tube for synthesis of lithium battery ternary precursors according to claim 2, characterized in that: The top of the docking plate (14) is slidably connected to the bottom of the fixing plate (9).

5. A composite feed tube for synthesis of lithium battery ternary precursors according to claim 2, characterized in that: An electronic valve is fixedly mounted on the outer wall of the air pipe (7), and a gear (16) is meshingly connected to the outer wall of the annular rack (13).

6. A composite feed tube for synthesis of lithium battery ternary precursors according to claim 2, characterized in that: The outer wall of the docking plate (14) is slidably connected to the inner wall of the injection pipe (8).

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