Gas-solid reaction device for lithium battery

Abstract

The utility model provides a gas-solid reaction device for a lithium battery, which solves the problems of weak stirring effect, serious material hanging phenomenon, low raw material utilization rate and high production energy consumption of the existing gas-solid reaction device, and comprises a kettle body, and a magnetic coupler and a stirrer assembly are arranged in the kettle body; the stirrer assembly comprises a stirring shaft connected with the magnetic coupler and a stirrer connected with the stirring shaft, the stirrer is arranged close to the lower sealing head of the kettle body, the stirrer is provided with two stirring blades, the lower surfaces of the stirring blades are detachably connected with a plurality of scrapers, and the stirring blades are provided with a plurality of round holes; the combined jacket assembly comprises half jackets and heat tracing pipes which are symmetrically arranged on the surface of the kettle body, jacket inlets of the half jackets are formed in the bottom of the kettle body, and jacket outlets of the half jackets are formed in the upper part of the kettle body; a heat tracing pipe outlet is formed in the top of the kettle body, and heat tracing pipe inlets are formed in the heat tracing pipe at intervals. The device is widely applied to the technical field of manufacturing of gas-solid reaction equipment.

Description

Technical Field

[0001] The present application relates to the technical field of gas-solid reaction equipment manufacturing, and more specifically, to a gas-solid reaction device for lithium batteries. Background Art

[0002] Lithium batteries offer advantages such as high voltage, compact size, light weight, high specific energy, no memory effect, no pollution, low self-discharge, and long life. They are widely used in a variety of fields, including civilian and military applications. With the development of industry, the demand for lithium batteries continues to grow, and lithium battery production technology continues to innovate, placing higher demands on lithium battery manufacturing. Equipment used in lithium battery production includes gas-solid reaction devices, which generally refer to the equipment involved in the interaction between gas and solid substances during the manufacturing and use of lithium batteries.

[0003] When the existing gas-solid reaction device for lithium batteries carries out gas-solid reaction, a large amount of material tends to accumulate at the bottom of the reaction device, resulting in weak stirring effect, poor gas-solid mixing effect, and serious material hanging phenomenon, which leads to low raw material utilization rate, high production energy consumption and other problems, seriously affecting the improvement of lithium battery production capacity.

[0004] The Chinese patent with publication number CN206965734U discloses a gas-solid reactor, including a reactor body, a bottom plate and a stirring device. The upper part of the reactor body is provided with an air inlet, an air outlet, a stirring motor and a feeding port. The outer surface of the reactor body is provided with a heating jacket. The bottom of the reactor body is a funnel-shaped structure and has a discharge port. A stirring device is provided at the center of the reactor body below the stirring motor. The stirring device includes a stirring shaft and an agitator. The agitator is divided into a first stirring blade, a second paddle stirring blade and a third double-spiral stirring blade arranged in sequence from bottom to top along the stirring shaft. The stirring blade of the first stirring blade is a plate-shaped structure with a serrated comb-shaped front end connected to the bottom end of the stirring shaft. The stirring blade has the same inclination angle as the bottom of the reactor body and is close to the inner wall of the bottom of the reactor body. There is a vibration damping device inside the bottom plate. There are support plates at the left and right ends of the bottom plate. The reactor is supported by a toggle. The toggle and the support plate are fixed with bolts or screws.

[0005] The above technical solution improves the raw material mixing efficiency of the gas-solid reaction device for lithium batteries, reduces worker labor intensity, and is suitable for mass production. However, the arrangement of the first stirring blade, the second paddle stirring blade, and the third double-ribbon stirring paddle from bottom to top along the stirring shaft results in a complex overall equipment structure and high manufacturing costs for lithium battery production equipment. The large area of the stirring blades results in significant material resistance during stirring, resulting in high production energy consumption.

[0006] Therefore, there is an urgent need for a gas-solid reaction device for lithium batteries with a simple structure, good stirring effect and low production energy consumption to meet the increasing production demand for lithium batteries. Utility Model Content

[0007] In order to solve the above-mentioned existing problems, the technical solution adopted by the utility model is: to provide a gas-solid reaction device for lithium batteries, which solves the problems of weak stirring effect, serious material hanging phenomenon, low raw material utilization and high production energy consumption of the existing gas-solid reaction device, including a kettle body, a magnetic coupler and a stirrer assembly are arranged inside the kettle body; the stirrer assembly includes a stirring shaft connected to the magnetic coupler and an agitator connected to the stirring shaft, the agitator is arranged near the lower head of the kettle body, the agitator is provided with two stirring blades, the lower surface of the stirring blade is detachably connected with multiple scrapers, and the stirring blade is provided with multiple circular holes; it also includes a combined jacket assembly, the combined jacket assembly includes a half jacket and a heating pipe symmetrically arranged on the surface of the kettle body, the jacket inlet of the half jacket is arranged at the bottom of the kettle body, and the jacket outlet of the half jacket is arranged at the upper part of the kettle body; a heating pipe outlet is provided at the top of the kettle body, and a heating pipe inlet is provided at intervals on the heating pipe.

[0008] Preferably, the lower surface of the stirring blade is conical, and the multiple scrapers are equidistant from the lower head.

[0009] Preferably, the plurality of scrapers are evenly spaced.

[0010] Preferably, an exhaust port is further provided on the upper portion of the semi-jacket.

[0011] Preferably, a baffle is provided between the two stirring blades.

[0012] Preferably, a spray assembly is provided on the top of the kettle body.

[0013] Preferably, the agitator assembly further comprises a stirring shaft arranged inside the kettle body, the stirring shaft comprising an upper shaft connected to the magnetic coupler and a lower shaft connected to the agitator, and an oil receiving umbrella assembly for receiving lubricating oil is provided on the stirring shaft.

[0014] Preferably, the oil receiving umbrella assembly is arranged on a support frame between the upper shaft and the lower shaft, the oil receiving umbrella assembly includes an oil receiving umbrella and an oil receiving umbrella box arranged above the oil receiving umbrella, the oil receiving umbrella box is provided with an oil receiving umbrella pipe connected to the outside of the kettle body; a rib plate is connected to the support frame, and the oil receiving umbrella assembly is fixed by an oil receiving umbrella fastener.

[0015] Preferably, baffles are symmetrically provided on the inner wall of the kettle.

[0016] The present invention has the following beneficial effects: the lower surface of the stirring blade is detachably connected to multiple scrapers, which are close to the inner wall of the lower head and can stir the reaction materials deposited on the bottom of the kettle body to mix them thoroughly with the reaction solution. At the same time, it has a good effect on removing residues from the lower head when cleaning the equipment after the reaction. The stirring blade is provided with multiple circular holes, which reduces the contact area between the stirring blade and the reaction materials and the reaction solution, reduces the external resistance encountered by the stirring blade during stirring, reduces the extra stirring power consumption, and improves the stirring efficiency and energy saving effect of the stirring blade. The combined jacket assembly includes a semi-jacket and a heat tracing pipe symmetrically arranged on the surface of the kettle body. The semi-jacket part is a semi-integral structure. While ensuring heat transfer efficiency, it optimizes the inner wall thickness of the kettle body under the same heat transfer medium pressure and saves equipment manufacturing costs. The heat tracing pipe can realize the rapid flow of heat source, facilitate rapid heating of the kettle body, and has good heat transfer efficiency. It is easy to disassemble and replace, has a simple structure, and is easy to maintain. The stirring shaft is provided with an oil receiving umbrella assembly for receiving lubricating oil to prevent lubricating oil from contaminating the reaction materials and ensure the cleanliness of the reaction materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 is a structural schematic diagram of the agitator assembly;

[0020] Figure 3 is a front view schematic diagram of a stirrer;

[0021] Figure 4 is a side view schematic diagram of a stirrer;

[0022] Figure 5 It is a structural diagram of the oil receiving parachute assembly;

[0023] Figure 6 It is a front view schematic diagram of the combined jacket assembly;

[0024] Figure 7 It is a top view schematic diagram of the combined jacket assembly.

[0025] Explanation of symbols in the figure: 1. Magnetic coupler; 2. Oil umbrella connecting pipe; 3. Spray assembly; 4. Oil umbrella connecting assembly; 5. Combined jacket assembly; 6. Coupling; 7. Agitator assembly; 8. Baffle; 9. Round hole; 10. Lower shaft; 11. Agitator; 12. Scraper fastener; 13. Baffle; 14. Scraper; 15. Stirring blade; 16. Support frame; 17. Oil umbrella connecting pipe fastener; 18. Rib plate; 19. Oil umbrella connecting pipe; 20. Oil umbrella connecting box; 21. Upper shaft; 22. Heat tracing pipe outlet; 23. Heat tracing pipe; 24. Exhaust port; 25. Jacket outlet; 26. Heat tracing pipe fixing clamp; 27. Heat tracing pipe inlet; 28. Kettle body; 29. Lower head; 30. Jacket inlet. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0028] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0029] A gas-solid reaction device for lithium batteries provided in an embodiment of the present application is now described.

[0030] See also Figures 1 to 4The gas-solid reaction device for lithium batteries includes a kettle body 28, and a magnetic coupler 1 and an agitator assembly 7 are provided inside the kettle body 28; the agitator assembly 7 includes a stirring shaft connected to the magnetic coupler 1 and an agitator 11 connected to the stirring shaft. The agitator 11 is arranged near the lower head 29 of the kettle body 28. The agitator 11 is provided with two stirring blades 15, and a plurality of scrapers 14 are detachably connected to the lower surface of the stirring blades 15. The stirring blades 15 are provided with a plurality of circular holes 9. Specifically, the scrapers 14 are detachably mounted on the stirring blades 15 through the scraper fasteners 12, which is convenient for maintenance. The gap and layout of the scrapers 14 can be adjusted according to the reaction needs and the actual conditions of the reaction materials, thereby improving the applicability of the agitator 11; and it has a good removal effect on the residue at the lower head 29 when cleaning the equipment after the reaction.

[0031] The stirring blade 15 and the scraper 14 are used to stir the reaction materials deposited at the bottom of the kettle body 28 so that they are fully mixed with the reaction solution; the stirring blade 15 is provided with a plurality of evenly spaced circular holes 9, which reduces the contact area between the stirring blade 15 and the reaction materials and the reaction solution, thereby reducing the external resistance encountered by the stirring blade 15 during stirring, reducing the additional consumption of stirring power, and improving the stirring efficiency and energy-saving effect of the stirring blade 15.

[0032] See also Figure 6 and Figure 7, is a schematic structural diagram of a combined jacket assembly 5. The gas-solid reaction device for lithium batteries provided by the present invention also includes a combined jacket assembly 5, which comprises a half-jacket and a heat tracing pipe 23 symmetrically arranged on the surface of a kettle body 28. The jacket inlet 30 of the half-jacket is located at the bottom of the kettle body 28, and the jacket outlet 25 of the half-jacket is located at the top of the kettle body 28. A heat tracing pipe outlet 22 is provided at the top of the kettle body 28, and heat tracing pipe inlets 27 are spaced apart on the heat tracing pipe 23. The heat tracing pipe 23 is secured by a heat tracing pipe fixing clamp 26. The combined jacket assembly 5 can achieve rapid heat exchange and temperature rise and insulation for the kettle body 28 and its contents. Specifically, when the combined jacket assembly 5 performs a heat exchange cycle, the half-jacket is the primary component, with the heat tracing pipe 23 serving as a supplement. Specifically, the heat transfer medium in the semi-jacket enters the chamber through the jacket inlet 30, passes through the lower head 29 and the surface of the kettle 28, and is discharged through the jacket outlet 25, completing the heat exchange cycle. The semi-jacket provides and maintains a stable flow area for the heat transfer medium. The semi-jacket is a semi-integral structure, which exerts less pressure on the kettle 28 and prevents it from becoming unstable or damaging. Therefore, the use of a semi-integral semi-jacket optimizes the inner wall thickness of the kettle 28 while ensuring effective heat transfer, while maintaining the same heat transfer medium pressure, thereby reducing equipment manufacturing costs. The heat transfer medium in the heat tracer 23 is pumped into the pipe body through the heat tracer inlet 27, passes through the heat tracer 23, and is discharged through the heat tracer outlet 22, completing the heat transfer cycle. Furthermore, the heat tracer 23 enables rapid flow of heat, facilitating rapid heating of the kettle 28, achieving effective heat transfer, and is easy to disassemble and replace, with a simple structure and excellent maintainability.

[0033] Furthermore, the lower surface of the stirring blade 15 is tapered, and the multiple scrapers 14 are equidistant from the lower head 29. All scrapers 14 are at the same distance from the inner wall of the lower head 29, and the scrapers 14 exert a uniform force on the solid material, facilitating the stirring of the reaction materials, particularly the solid materials, deposited at the bottom of the kettle 28, thereby avoiding uneven force on the solid materials and affecting stirring. The conical lower surface of the stirring blade 15 can quickly disperse the solid materials, allowing them to fully react while preventing the solid materials from affecting the stirring shaft.

[0034] Furthermore, the plurality of scrapers 14 are evenly spaced and arranged close to the inner wall of the lower head 29 .

[0035] Furthermore, an exhaust port 24 is provided on the upper portion of the semi-jacket. When the combined jacket assembly 5 starts a heat exchange cycle, the gas in the semi-jacket cavity is discharged through the exhaust port 24 in advance.

[0036] Furthermore, a baffle 13 is provided between the two stirring blades 15. Specifically, the stirring blades 15 and their scrapers 14 are in a rake-plow style, which provides a large shear force and can refine solid particles. The baffle 13 is provided horizontally between the stirring blades 15. The stirring blades 15 and the baffle 13 cooperate to convert part of the tangential flow generated by the stirrer 11 into an axial flow, thereby enhancing the axial circulation flow of the material in the kettle 28 and improving the stirring efficiency. At the same time, the provision of the baffle 13 enhances the overall strength of the stirrer 11.

[0037] Furthermore, a spray assembly 3 is provided on the top of the kettle 28. The spray assembly 3 uniformly sprays the reaction materials and reaction solution in the kettle 28, which to some extent solves the problem of poor dispersion of the catalyst materials. The spray assembly 3 also performs a preliminary cleaning of materials adhering to the inner wall and internal components of the kettle 28 and deposited on the bottom of the kettle 28, eliminating the need for secondary flushing with other equipment. This saves time and effort, improves production efficiency, and facilitates flushing of the kettle 28 after the reaction test.

[0038] Furthermore, the stirring shaft includes an upper shaft 21 connected to the magnetic coupling 1 and a lower shaft 10 connected to the agitator 11. The stirring shaft is provided with an oil receiving umbrella assembly 4 for receiving lubricating oil. Specifically, the upper shaft 21 is provided at the top of the kettle body 28, and the upper shaft 21 is connected to the magnetic coupling 1. The upper shaft 21 is connected to the lower shaft 10 via a coupling 6, and the bottom of the lower shaft 10 is connected to the agitator 7. Specifically, the length of the lower shaft 10 is adjustable. By adjusting the length of the lower shaft 10, the agitator 11 can be brought as close as possible to the lower head 29, and the scraper 14 can effectively scrape the wall, further improving the utilization rate of the reaction materials and improving the reaction efficiency.

[0039] See also Figure 1 and Figure 5 Furthermore, the oil-receiving umbrella assembly 4 is disposed on the support frame 16 between the upper shaft 21 and the lower shaft 10. The oil-receiving umbrella assembly 4 includes an oil-receiving umbrella 19 and an oil-receiving umbrella box 20 disposed above the oil-receiving umbrella 19. The oil-receiving umbrella box 20 is provided with an oil-receiving umbrella pipe 2 that communicates with the exterior of the kettle 28. A rib 18 is connected to the support frame 16, and the oil-receiving umbrella assembly 4 is secured by an oil-receiving umbrella fastener 17. Specifically, chemical mixing equipment generally requires the injection of a fixed amount of lubricating oil to ensure normal operation of the equipment and reduce wear on bearings and other components. However, the lubricating oil may enter the kettle 28, contaminating the reaction materials and affecting the purity of the product. The oil-receiving umbrella assembly 4 can prevent the lubricating oil from contaminating the reaction materials, ensuring the cleanliness of the reaction materials. The oil-receiving umbrella box 20 is provided with an oil-receiving umbrella pipe 2, and the pollutants collected by the oil-receiving umbrella box 20 are discharged from the kettle 28 through the oil-receiving umbrella pipe 2.

[0040] Furthermore, baffles 8 are symmetrically provided on the inner wall of the kettle body 28 .

[0041] The working principle of the present invention is as follows: 1. When the reaction materials in the kettle body 28 need to be stirred, the length of the lower shaft 10 is adjusted so that the stirrer 11 is close to the inner wall of the lower head 29, the magnetic coupler 1 drives the stirrer assembly 7 to rotate, the scraper 14 scrapes off the materials attached to the kettle wall and deposited on the bottom of the kettle, and the stirring blade 15 stirs and disperses the solid materials. 2. When the reaction materials in the kettle body 28 need to be heat exchanged and circulated, the heat exchange medium in the semi-jacket part enters the cavity from the jacket inlet 30, passes through the surface of the lower head 29 and the kettle body 28, and is discharged from the jacket outlet 25, completing the heat exchange cycle; the heat exchange medium in the heat pipe 23 part is pumped into the pipe body from the heat pipe inlet 27, passes through the heat pipe 23 and is discharged from the heat pipe outlet 22, completing the circulation of the heat exchange medium.

[0042] In the present invention, the lower surface of the stirring blade 15 is detachably connected to a plurality of scrapers 14, which are in close contact with the inner wall of the lower head 29 and can stir the reaction materials deposited on the bottom of the kettle 28 so that they are fully mixed with the reaction solution. At the same time, it has a good effect on removing residues on the lower head 29 when cleaning the equipment after the reaction. The stirring blade 15 is provided with a plurality of circular holes 9, which reduce the contact area between the stirring blade 15 and the reaction materials and the reaction solution, reduce the external resistance encountered by the stirring blade 15 during stirring, reduce the additional consumption of stirring power, and improve the stirring efficiency and energy saving effect of the stirring blade 15. The combined jacket assembly 5 includes a semi-jacket and a heat tracing pipe 23 symmetrically arranged on the surface of the kettle 28. The semi-jacket part is a semi-integral structure. While ensuring heat transfer efficiency, it optimizes the inner wall thickness of the kettle 28 under the same heat transfer medium pressure, saving equipment manufacturing costs. The heat tracing pipe 23 can realize the rapid flow of heat source, facilitate the rapid heating of the kettle 28, and achieve good heat transfer efficiency. It is also easy to disassemble and replace, has a simple structure, and is easy to maintain. An oil receiving umbrella assembly 4 for receiving lubricating oil is provided on the stirring shaft to prevent the lubricating oil from contaminating the reaction materials and ensure the cleanliness of the reaction materials.

[0043] The above specific implementation methods do not cover the entire scope of protection of the utility model. Modifications or equivalent replacements of the utility model should all fall within the scope of the patent coverage of the utility model. In the present utility model, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, a person of ordinary skill in the art should understand that it is still possible to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A gas-solid reaction device for lithium batteries, comprising a kettle (28), wherein a magnetic coupler (1) and a stirrer assembly (7) are provided inside the kettle (28); characterized in that: The agitator assembly (7) includes an agitator shaft connected to the magnetic coupler (1) and an agitator (11) connected to the agitator shaft, the agitator (11) being arranged near the lower head (29) of the kettle body (28), the agitator (11) being provided with two agitator blades (15), the lower surface of the agitator blades (15) being detachably connected with a plurality of scrapers (14), and the agitator blades (15) being provided with a plurality of circular holes (9); and further includes a combined jacket assembly (5), the combined jacket assembly (5) including a half jacket and a heating pipe (23) symmetrically arranged on the surface of the kettle body (28), the jacket inlet (30) of the half jacket being arranged at the bottom of the kettle body (28), and the jacket outlet (25) of the half jacket being arranged at the upper part of the kettle body (28); a heating pipe outlet (22) being provided at the top of the kettle body (28), and a heating pipe inlet (27) being provided at intervals on the heating pipe (23).

2. A gas-solid reaction device for lithium batteries according to claim 1, characterized in that: The lower surface of the stirring blade (15) is conical, and the plurality of scrapers (14) are equidistant from the lower head (29).

3. A gas-solid reaction device for lithium batteries according to claim 2, characterized in that: The plurality of scrapers (14) are evenly spaced.

4. The gas-solid reaction device for lithium batteries according to claim 1, wherein: An exhaust port (24) is also provided on the upper portion of the semi-jacket.

5. The gas-solid reaction device for lithium batteries according to claim 1, wherein: A baffle (13) is provided between the two stirring blades (15).

6. The gas-solid reaction device for lithium batteries according to claim 1, wherein: A spray assembly (3) is provided on the top of the kettle body (28).

7. The gas-solid reaction device for lithium batteries according to claim 1, wherein: The stirring shaft comprises an upper shaft (21) connected to the magnetic coupler (1) and a lower shaft (10) connected to the stirrer (11); an oil receiving umbrella assembly (4) for receiving lubricating oil is provided on the stirring shaft.

8. A gas-solid reaction device for lithium batteries according to claim 7, characterized in that: The oil receiving umbrella assembly (4) is arranged on a support frame (16) between the upper shaft (21) and the lower shaft (10), and the oil receiving umbrella assembly (4) includes an oil receiving umbrella (19) and an oil receiving umbrella box (20) arranged above the oil receiving umbrella (19), and the oil receiving umbrella box (20) is provided with an oil receiving umbrella pipe (2) connected to the outside of the kettle body (28); a rib plate (18) is connected to the support frame (16), and the oil receiving umbrella assembly (4) is fixed by an oil receiving umbrella fastener (17).

9. The gas-solid reaction device for lithium batteries according to claim 1, wherein: Baffles (8) are symmetrically provided on the inner wall of the kettle body (28).

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