A kind of spray stirred tank for electrolyte production
Patent Information
- Application Number
- CN202522364048.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-11-07
AI Technical Summary
该方法的弊端十分突出：其一，溶剂消耗成本高昂，为覆盖釜壁、穹顶状釜顶、搅拌桨背部及桨叶根部等易积残留的死角，需注入远超理论需求的溶剂，且单次清洗后溶剂即失效，大幅增加生产成本；其二，清洗彻底性不足，垂直釜壁易因液体附着力形成流动盲区，穹顶部位则因重力作用导致冲洗液难以停留，仅依赖液体自然流动和飞溅的冲洗力，无法彻底剥离顽固残留，为后续生产埋下污染隐患；其三，间接影响生产效率，现有生产流程中溶剂及原料的加入多通过釜壁固定进液口注入，液体直接冲击釜内液面，分散效果差，不仅延长了混合均质的时间，还可能因局部浓度不均影响电解液性能，进一步制约了整体生产效率的提升
[0021]本实用新型提供一种用于电解液生产的喷淋搅拌釜，包括釜体和驱动电机，釜体内设有搅拌机构和喷淋机构，搅拌机构包括搅拌轴和搅拌桨，喷淋机构包括进料轴、进料管路和喷淋件。在清洗模式下，将溶剂清洗罐与进料管路连通，启动驱动电机，搅拌轴与进料轴同步旋转，带动喷淋件转动，清洗溶剂通过旋转接头进入进料通道并从旋转的喷淋件中以不同角度喷出，实现无死角高效清洗，大幅节约清洗溶剂。在生产模式下，将溶剂原料罐与进料管路连通，在搅拌过程中，大量溶剂通过旋转的喷淋件均匀地喷洒到釜体内已有的物料液面上，而非从一个点集中注入，利用其旋转喷淋功能使液体快速分散，极大地提高了溶剂的分散效率，从而显著缩短了混合均质时间，提高生产效率，一机两用，实用性强，具有显著的经济效益。
Smart Images
Figure CN224793315U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of lithium battery material production equipment, and in particular to a spray stirring tank for electrolyte production. Background Technology
[0002] In the production process of lithium-ion battery electrolytes, one of the core steps is to achieve thorough and uniform mixing of high-purity organic solvents, lithium salts, and various functional additives in a stirred tank. The cleanliness of the stirred tank directly determines the quality of the electrolyte product. As a precision chemical product that is extremely sensitive to impurities, any trace amounts of electrolyte, lithium salt crystals, or additive components remaining after any batch of production can cause cross-contamination in subsequent batches. This can lead to deviations from standards in key performance indicators such as ionic conductivity and stability of the entire batch of electrolyte, ultimately resulting in product scrap.
[0003] However, existing stirred tank cleaning processes have significant drawbacks, being not only time-consuming and material-intensive, but also difficult to reliably guarantee cleaning effectiveness. The industry commonly uses solvent rinsing: large amounts of organic solvents such as ethylene carbonate (EC), diethyl carbonate (DEC), and dimethyl carbonate (DMC) are injected into the tank, and the solvent is stirred by the rotation of the agitator. The liquid flow and splashing are used to rinse the inside of the tank, and finally, waste liquid containing residual contaminants is discharged. The drawbacks of this method are quite prominent: First, the solvent consumption is expensive. To cover the dead corners where residues easily accumulate, such as the vessel wall, the dome-shaped vessel top, the back of the agitator, and the root of the blades, a much larger amount of solvent than theoretically required must be injected. Moreover, the solvent becomes ineffective after a single cleaning, significantly increasing production costs. Second, the cleaning is not thorough enough. Vertical vessel walls are prone to forming flow blind zones due to liquid adhesion, while the dome area is difficult for the rinsing liquid to stay due to gravity. Relying solely on the natural flow of the liquid and the rinsing force of splashing cannot completely remove stubborn residues, creating a potential pollution hazard for subsequent production. Third, it indirectly affects production efficiency. In the existing production process, solvents and raw materials are mostly added through fixed inlets on the vessel wall. The liquid directly impacts the liquid surface inside the vessel, resulting in poor dispersion. This not only prolongs the mixing and homogenization time but may also affect the performance of the electrolyte due to uneven local concentrations, further restricting the improvement of overall production efficiency.
[0004] Therefore, there is an urgent need to propose a spray-stirred reactor for electrolyte production to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a spray-stirred reactor for electrolyte production, which achieves thorough cleaning of the reactor interior without dead angles, significantly saving cleaning solvent; at the same time, in production mode, its rotating spray function enables rapid dispersion of liquid, thereby shortening stirring time and improving production efficiency.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A spray-stirred reactor for electrolyte production includes a reactor body and a drive motor. The reactor body is equipped with:
[0008] A stirring mechanism, comprising a stirring shaft and a stirring paddle, wherein the stirring paddle is fixedly connected to the stirring shaft;
[0009] The spraying mechanism includes a feed shaft, a feed pipe, and spraying components. One end of the feed shaft is connected to the output end of the drive motor, and the other end of the feed shaft is fixedly connected to the stirring shaft. The feed shaft and the stirring shaft are coaxially arranged. The feed shaft has a feed channel. The inlet of the feed channel is connected to the outlet of the feed pipe through a rotary joint. The outlet of the feed channel is connected to the spraying components. The inlet of the feed pipe is selectively connected to a solvent cleaning tank or a solvent raw material tank.
[0010] Preferably, the spray element is provided with multiple nozzles, which are evenly distributed on the surface of the spray element at intervals.
[0011] Preferably, the spray element has a spherical structure.
[0012] Preferably, a liquid inlet hole is provided on the side wall at the inlet of the feed channel, and the liquid inlet hole is connected to the rotary joint.
[0013] Preferably, the rotary joint is a fluid-sealed rotary joint.
[0014] Preferably, a three-way valve is installed on the feed pipeline, with the outlet of the three-way valve connected to the inlet of the feed pipeline, and the two inlets of the three-way valve connected to the solvent cleaning tank and the solvent raw material tank, respectively.
[0015] Preferably, the spray-stirred reactor for electrolyte production also includes a feed pump, the inlet of which is connected to the outlet of the solvent cleaning tank and the outlet of the solvent raw material tank, respectively, and the outlet of the feed pump is connected to the two inlets of the three-way valve.
[0016] Preferably, the number of agitators is at least two, and the at least two agitators are evenly spaced along the circumferential distance of the agitator shaft.
[0017] Preferably, the stirring paddle is located at the bottom of the vessel;
[0018] And / or, the spray element is located in the middle of the vessel body.
[0019] Preferably, the stirring mechanism also includes a drain valve, and a drain port is provided at the bottom of the vessel body, with the drain valve fixedly connected to the inner wall of the drain port.
[0020] The beneficial effects of this utility model are:
[0021] This invention provides a spray-stirred reactor for electrolyte production, comprising a reactor body and a drive motor. The reactor body houses a stirring mechanism and a spraying mechanism. The stirring mechanism includes a stirring shaft and a stirring paddle, while the spraying mechanism includes a feed shaft, a feed pipe, and spray nozzles. In cleaning mode, the solvent cleaning tank is connected to the feed pipe, and the drive motor is started. The stirring shaft and feed shaft rotate synchronously, driving the spray nozzles to rotate. The cleaning solvent enters the feed channel through a rotary joint and is sprayed out at different angles from the rotating spray nozzles, achieving efficient cleaning without dead angles and significantly saving cleaning solvent. In production mode, the solvent raw material tank is connected to the feed pipe. During stirring, a large amount of solvent is evenly sprayed onto the existing liquid surface in the reactor body through the rotating spray nozzles, rather than being injected from a single point. Utilizing its rotating spraying function, the liquid is rapidly dispersed, greatly improving the solvent dispersion efficiency, thereby significantly shortening the mixing and homogenization time, increasing production efficiency, and providing dual functionality with strong practicality and significant economic benefits. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of the spray-stirred reactor for electrolyte production provided in this embodiment.
[0023] In the picture:
[0024] 100. Kettle body; 111. Stirring shaft; 112. Stirring paddle; 113. Drain valve; 121. Feed shaft; 1211. Inlet hole; 122. Feed pipe; 123. Spraying component; 124. Nozzle; 200. Drive motor; 300. Rotary joint; 400. Three-way valve. Detailed Implementation
[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0028] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0029] This embodiment provides a spray-stirred reactor for electrolyte production, which achieves thorough cleaning of the reactor interior without dead angles, significantly saving cleaning solvent; at the same time, in production mode, its rotating spray function enables rapid dispersion of liquid, thereby shortening stirring time and improving production efficiency.
[0030] Specifically, such as Figure 1 As shown, a spray-stirred reactor for electrolyte production includes a reactor body 100 and a drive motor 200. The reactor body 100 is equipped with a stirring mechanism and a spraying mechanism. The stirring mechanism includes a stirring shaft 111 and at least two stirring paddles 112. The stirring paddles 112 are fixedly connected to the stirring shaft 111. Through the stirring of the stirring paddles 112, the material contact area is increased, a multi-dimensional stirring flow field is formed, the material in the reactor body 100 is subjected to more uniform force, the mixing efficiency and homogenization effect are improved, and local material accumulation is avoided.
[0031] The spraying mechanism includes a feed shaft 121, a feed pipe 122, and a spray element 123. One end of the feed shaft 121 is connected to the output end of the drive motor 200, and the other end of the feed shaft 121 is fixedly connected to the stirring shaft 111. The feed shaft 121 and the stirring shaft 111 are coaxially arranged to achieve synchronous rotation of the feed shaft 121 and the stirring shaft 111. The feed shaft 121 has a feed channel. The inlet of the feed channel is connected to the outlet of the feed pipe 122 through a rotary joint 300. The outlet of the feed channel is connected to the spray element 123. The inlet of the feed pipe 122 is selectively connected to the solvent cleaning tank (…). Figure 1 (not shown in the image) or solvent raw material tank ( Figure 1(Not shown) The connection enables integrated switching between raw material solvent transportation and mixing and internal spray cleaning of the vessel body 100, without the need for additional pipeline disassembly and modification, improving production continuity and cleaning convenience, and avoiding cross-contamination. In this embodiment, the feed shaft 121 and the stirring shaft 111 achieve synchronous rotation through a coupling; in other embodiments, the feed shaft 121 and the stirring shaft 111 achieve synchronous rotation through a gear set.
[0032] In cleaning mode, the solvent cleaning tank is connected to the feed pipe 122, and the drive motor 200 is started. The stirring shaft 111 and the feed shaft 121 rotate synchronously, driving the spray element 123 to rotate. The cleaning solvent enters the feed channel through the rotary joint 300 and is sprayed out at different angles from the rotating spray element 123, achieving efficient cleaning without dead angles and significantly saving cleaning solvent. In production mode, the solvent raw material tank is connected to the feed pipe 122. During the stirring process, a large amount of solvent is evenly sprayed onto the existing liquid surface in the vessel 100 through the rotating spray element 123, rather than being injected from a single point. Utilizing its rotating spray function, the liquid is quickly dispersed, greatly improving the solvent dispersion efficiency, thereby significantly shortening the mixing and homogenization time, improving production efficiency, and serving two purposes in one machine. It is highly practical and has significant economic benefits.
[0033] Furthermore, the spray element 123 is equipped with multiple nozzles 124. These nozzles 124 disperse the cleaning solvent or raw material solvent into uniform droplets, comprehensively covering the interior space of the vessel body 100. This enhances the contact area with the material, improves the uniformity and efficiency of mixing or cleaning, and avoids local dead zones. It should be noted that the number of nozzles 124 is not specifically limited in this embodiment and can be adjusted according to actual conditions. The multiple nozzles 124 are evenly distributed on the surface of the spray element 123, and the sprayed solvent or raw material forms a fully covered, dead-zone-free spray area, ensuring balanced contact between the solvent or raw material and all parts of the vessel body 100, further improving the uniformity of mixing or cleaning and avoiding local omissions.
[0034] Furthermore, the spray element 123 has a spherical structure, which enables multiple nozzles 124 evenly distributed on the surface of the spray element 123 to achieve 360° all-round spraying without dead angles, so that the cleaning solvent or raw material solvent covers all areas inside the vessel body 100, improving the comprehensiveness and uniformity of mixing or cleaning, and adapting to the internal space of vessel bodies 100 with different shapes.
[0035] Optionally, an inlet hole 1211 is provided on the side wall at the inlet of the feed channel. The inlet hole 1211 is connected to the rotary joint 300 to achieve a smooth connection between the fixed side feed pipe 122 and the rotating side feed channel, ensuring continuous and leak-free delivery of the medium under rotating conditions, and avoiding the feed pipe 122 from getting tangled and affecting the continuity of spraying or feeding.
[0036] Furthermore, the rotary joint 300 is a fluid-sealed rotary joint 300, which achieves dynamic sealing between the fixed pipeline and the rotating channel during the rotation of the feed shaft 121, preventing solvent or raw material leakage, ensuring the sealing and continuity of media transportation, and maintaining the safety of the production environment.
[0037] Optionally, a three-way valve 400 is provided on the feed pipeline 122. The outlet of the three-way valve 400 is connected to the inlet of the feed pipeline 122. The two inlets of the three-way valve 400 are connected to the solvent cleaning tank and the solvent raw material tank, respectively. By selectively connecting the solvent cleaning tank or the solvent raw material tank through the three-way valve 400, the medium source can be quickly switched. The raw material solvent transportation and cleaning inside the vessel 100 can be seamlessly connected without disassembling the feed pipeline 122, thereby improving production efficiency and avoiding cross-contamination.
[0038] Furthermore, the spray-stirred reactor used for electrolyte production also includes a feed pump. The inlet of the feed pump is connected to the outlet of the solvent cleaning tank and the outlet of the solvent raw material tank, respectively. The outlet of the feed pump is connected to the two inlets of the three-way valve 400, respectively, to provide stable power for the conveying of raw material solvent and the cleaning inside the reactor body 100, realize the high-pressure spraying of the nozzle 124, and cooperate with the three-way valve 400 to realize the rapid switching of the two media, ensuring continuous and efficient feeding and cleaning processes, and avoiding blockage of the feed pipeline 122 or interruption of media conveying.
[0039] Optionally, the number of stirring paddles 112 is at least two, and the at least two stirring paddles 112 are evenly spaced along the circumferential distance of the stirring shaft 111 to further improve the mixing efficiency of the material in the vessel 100. In this embodiment, the number of stirring paddles 112 is two. In other embodiments, the number of stirring paddles 112 may also be three, four, or five, etc.
[0040] Furthermore, the stirring paddle 112 is located at the bottom of the vessel body 100, causing the bottom material inside the vessel to tumble upwards, forming a vertically convective stirring flow field, preventing material from settling at the bottom of the vessel, and simultaneously enhancing the overall mixing uniformity and improving the material reaction or mixing efficiency. The spray element 123 is located in the middle of the vessel body 100, allowing the sprayed medium to diffuse upwards, downwards, leftwards, and rightwards from the central area, precisely covering the core mixing area inside the vessel body 100. It works synergistically with the bottom stirring paddle 112 to further improve the uniformity of material mixing or cleaning inside the vessel body 100, avoiding uneven distribution of the upper and lower layers of medium. In other embodiments, the stirring paddle 112 is located at the bottom of the vessel body 100 or the spray element 123 is located in the middle of the vessel body 100.
[0041] Optionally, the stirring mechanism also includes a drain valve 113. A drain port is provided at the bottom of the vessel body 100. The drain valve 113 is fixedly connected to the inner wall of the drain port. The reaction material or cleaning waste liquid is quickly discharged through the drain port, realizing the emptying of the material in the vessel body 100 and the centralized treatment of waste liquid. At the same time, the controllable switch of the drain valve 113 ensures the safety of operation and the continuity of the process.
[0042] The working principle of the spray-stirred reactor for electrolyte production provided in this embodiment is as follows:
[0043] Cleaning Mode: Switch the valve of the three-way valve 400 to connect the solvent cleaning tank to the rotary joint 300. Start the drive motor 200, and the stirring shaft 111 and the feed shaft 121 rotate synchronously, driving the spray nozzle 123 to rotate. High-pressure solvent enters the feed shaft 121 through the rotary joint 300 and is sprayed out at high speed at different angles from the rotating nozzle 124, forming a three-dimensional rinsing network covering the entire inner wall, top, and stirring mechanism of the vessel body 100, achieving efficient cleaning without dead angles.
[0044] Production mode: Switch the valve of the three-way valve 400 to connect the solvent raw material tank with the rotary joint 300. During the stirring process, a large amount of solvent is evenly sprayed onto the existing material liquid surface in the vessel body 100 through the rotating nozzle 124, instead of being injected from a single point, which greatly improves the solvent dispersion efficiency and thus significantly shortens the mixing and homogenization time.
[0045] The beneficial effects of the spray-stirred reactor for electrolyte production provided in this embodiment are as follows:
[0046] 1. Saves cleaning solvent: The high-pressure flushing action of the rotating nozzle 124 greatly improves cleaning efficiency. Actual operation has verified that it can save up to 50% or more of the cleaning solvent consumption.
[0047] 2. Thorough cleaning: The adjustable-angle rotating spray can cover all areas that are difficult to reach with traditional cleaning methods, such as the top of the vessel, the vessel wall, the back of the stirring shaft 111 and the blades of the stirring paddle 112, resulting in extremely high cleaning quality.
[0048] 3. Improve production efficiency: Utilize the spray dispersion characteristics to accelerate the dissolution and mixing process and shorten the production cycle of a single batch.
[0049] 4. Dual-purpose and compact structure: One spray mixing tank realizes two major functions: cleaning and feeding. No large-scale modification of the tank body structure is required, resulting in low modification cost and high practicality.
[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A spray-stirring reactor for electrolyte production, comprising a reactor body and a drive motor, characterized in that, The vessel body (100) is equipped with: A stirring mechanism, comprising a stirring shaft (111) and a stirring paddle (112), wherein the stirring paddle (112) is fixedly connected to the stirring shaft (111); The spraying mechanism includes a feed shaft (121), a feed pipe (122), and a spraying element (123). One end of the feed shaft (121) is connected to the output end of the drive motor (200), and the other end of the feed shaft (121) is fixedly connected to the stirring shaft (111). The feed shaft (121) and the stirring shaft (111) are coaxially arranged. The feed shaft (121) is provided with a feed channel. The inlet of the feed channel is connected to the outlet of the feed pipe (122) through a rotary joint (300). The outlet of the feed channel is connected to the spraying element (123). The inlet of the feed pipe (122) is selectively connected to a solvent cleaning tank or a solvent raw material tank.
2. The spray-stirred reactor for electrolyte production according to claim 1, characterized in that, The spraying component (123) is provided with a plurality of nozzles (124), and the plurality of nozzles (124) are evenly distributed at intervals on the surface of the spraying component (123).
3. The spray-stirred reactor for electrolyte production according to claim 2, characterized in that, The spray element (123) has a spherical structure.
4. The spray-stirred reactor for electrolyte production according to claim 1, characterized in that, A liquid inlet hole (1211) is provided on the side wall at the entrance of the feeding channel, and the liquid inlet hole (1211) is connected to the rotary joint (300).
5. The spray-stirred reactor for electrolyte production according to claim 4, characterized in that, The rotary joint (300) is a fluid-sealed rotary joint.
6. The spray-stirred reactor for electrolyte production according to claim 1, characterized in that, The feed pipeline (122) is equipped with a three-way valve (400). The outlet of the three-way valve (400) is connected to the inlet of the feed pipeline (122), and the two inlets of the three-way valve (400) are respectively connected to the solvent cleaning tank and the solvent raw material tank.
7. The spray-stirred reactor for electrolyte production according to claim 6, characterized in that, The spray-stirring vessel for electrolyte production also includes a feed pump, the inlet of which is connected to the outlet of the solvent cleaning tank and the outlet of the solvent raw material tank, respectively, and the outlet of the feed pump is connected to the two inlets of the three-way valve (400).
8. The spray-stirred reactor for electrolyte production according to any one of claims 1-7, characterized in that, The number of the stirring paddles (112) is at least two, and the at least two stirring paddles (112) are evenly spaced along the circumferential interval of the stirring shaft (111).
9. The spray-stirred reactor for electrolyte production according to any one of claims 1-7, characterized in that, The stirring paddle (112) is located at the bottom of the vessel body (100); And / or, the spray element (123) is located in the middle of the vessel body (100).
10. The spray-stirred reactor for electrolyte production according to any one of claims 1-7, characterized in that, The stirring mechanism also includes a drain valve (113), and a drain port is provided at the bottom of the vessel body (100). The drain valve (113) is fixedly connected to the inner wall of the drain port.