A lithium carbonate production batching device

Abstract

The application provides a batching device for lithium carbonate production, which comprises a stirring barrel, an inlet and an outlet on the stirring barrel, a power box arranged on the inner top surface of the stirring barrel, a rotating shaft arranged in the power box, a first external gear arranged on the rotating shaft, an internal gear ring arranged in the power box, a second external gear arranged between the first external gear and the internal gear ring, a rotating sleeve pipe rotatably arranged on the rotating shaft, the internal gear ring being connected with the rotating sleeve pipe, an upper stirring paddle and an upper scraper being arranged on the rotating sleeve pipe, a lower stirring paddle and a lower scraper being arranged on the rotating shaft, and a driving mechanism being arranged on the stirring barrel, the upper stirring paddle and the lower stirring paddle rotating in opposite directions in the stirring barrel, so that the mixing dead zone in the stirring barrel is eliminated, the scale layer is timely stripped off, the scale layer on the inner wall of the stirring barrel is effectively prevented from thickening, and the device is high in structural integration, transmission efficiency, manufacturing cost and operation energy consumption.

Description

Technical Field

[0001] This application relates to the field of chemical equipment, and more specifically, to a batching device for lithium carbonate production. Background Technology

[0002] The preparation and addition of sodium carbonate is a crucial step in lithium carbonate production, and its quality directly determines the stability of the lithium precipitation process and the quality of the final product. In the mainstream sulfuric acid process, the lithium precipitation reaction involves a metathesis reaction between refined lithium mother liquor and sodium carbonate solution under specific conditions to generate lithium carbonate precipitate. This reaction has stringent requirements on the concentration of the sodium carbonate solution; excessive concentration fluctuations will lead to uneven lithium carbonate crystal particle size, decreased purity, and even co-precipitation of encapsulated impurities due to localized overconcentration, severely affecting product quality and lithium yield. In the lithium carbonate production process, the batching device adds sodium carbonate solid powder and other materials into a mixing tank, mixes them by mechanical stirring, and after uniform dissolution, transfers them to a storage tank for later use by a transfer pump. The performance of the batching device directly affects product quality and production efficiency.

[0003] In existing batching equipment, during the preparation of sodium carbonate, the sodium carbonate solution easily deposits a hard scale layer on the inner wall of the mixing tank, the surface of the agitator, and the bottom of the mixing tank. The uneven surface of the scale layer increases fluid resistance, changes the reflection and turning angle of the fluid, and creates dead zones where the fluid hardly flows or has an extremely low flow rate. Solid particles easily settle, adhere, and gradually harden into scale in these dead zones, causing the scale layer to thicken more quickly. The scale layer on the agitator increases the resistance of the agitator blades, resulting in increased motor current and energy consumption. The scale layer can also block the discharge port, conveying pipes, and valves. At the same time, the thickening of the scale layer changes the effective volume inside the mixing tank, which in turn affects the accuracy of liquid level measurement. As the scale layer gradually thickens, the liquid level measurement error also changes dynamically, causing fluctuations in the concentration of the prepared solution. This often forces production to be interrupted, requiring the machine to be stopped to clean the scale layer inside the mixing tank, thus affecting production efficiency. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the first aspect of this application is to provide a batching device for lithium carbonate production.

[0006] In view of the above, according to the first aspect of this application, a batching device for lithium carbonate production is provided, characterized in that it includes a mixing tank and an inlet and an outlet thereon, a power box is provided on the top surface of the mixing tank, a rotating shaft is rotatably arranged in the power box, a first external gear is arranged on the rotating shaft, an internal gear ring concentric with the first external gear is rotatably arranged in the power box, a second external gear is arranged between the first external gear and the internal gear ring, the second external gear meshes with the internal gear ring and the first external gear, a rotating sleeve is rotatably sleeved on the rotating shaft, the internal gear ring is connected to the rotating sleeve, both the rotating sleeve and the rotating shaft extend into the mixing tank, an upper stirring paddle near the top surface of the mixing tank and an upper scraper for cleaning the inner wall of the upper half of the mixing tank are arranged on the rotating sleeve, a lower stirring paddle near the bottom surface of the mixing tank and a lower scraper for cleaning the inner wall of the lower half of the mixing tank are arranged on the rotating shaft, and a drive mechanism for driving the rotating shaft to rotate is provided on the mixing tank.

[0007] In one possible technical solution, the rotating sleeve is further provided with a first connecting rod for connecting the upper scraper, and the rotating shaft is provided with a second connecting rod for connecting the lower scraper. Each of the first and second connecting rods has a stirring rod assembly at one end, and the stirring rods of the two sets of stirring rod assemblies are arranged alternately.

[0008] In one possible technical solution, there are further two of each of the first and second connecting rods. The two first connecting rods are respectively arranged at opposite positions on the side wall of the rotating sleeve, and each of the two first connecting rods is connected to a corresponding upper scraper. The two second connecting rods are respectively arranged at opposite positions on the side wall of the rotating shaft, and each of the two second connecting rods is connected to a corresponding lower scraper.

[0009] In one possible technical solution, the thickness of the internal gear ring is greater than the thickness of the first external gear and the second external gear. A vertical rod is provided on the inner top surface of the power box. The second external gear is rotatably disposed at the bottom end of the vertical rod. The second external gear meshes with the upper part of the inner ring of the internal gear ring. A third connecting rod connected to the internal gear ring is provided on the rotating sleeve. The third connecting rod is connected to the lower part of the inner ring of the internal gear ring.

[0010] In one possible technical solution, the discharge port is further located at the center of the bottom surface of the mixing tank, and a hollow rotating cylinder is provided at the bottom end of the rotating shaft. The rotating cylinder is located near the discharge port, and the bottom end of the rotating cylinder has an open structure. Multiple notches are provided on the side wall of the rotating cylinder near the opening, and the multiple notches are arranged at equal intervals along the circumference of the side wall of the rotating cylinder.

[0011] In one possible technical solution, the upper and lower stirring paddles are further provided with a plurality of through holes arranged evenly.

[0012] In one possible technical solution, the drive mechanism further includes a motor and a gearbox, both of which are mounted on the outer top surface of the mixing tank. The output shaft of the motor is connected to the input end of the gearbox, and the output end of the gearbox is connected to a rotating shaft.

[0013] In one possible technical solution, a torque sensor is further provided between the gearbox and the rotating shaft, the output end of the gearbox is connected to the input end of the torque sensor, and the output end of the torque sensor is connected to the rotating shaft.

[0014] In one possible technical solution, a water outlet pipe is further provided on the discharge port, a first solenoid valve is provided on the water outlet pipe, a detection pipe is provided on the side wall of the water outlet pipe away from the water outlet and the first solenoid valve, and a second solenoid valve is provided on the detection pipe.

[0015] In one possible technical solution, the system further includes a support, on which the mixing tank is mounted, and on which a support platform for a person to stand is provided.

[0016] The beneficial effects of the present invention are as follows: a planetary gear system is formed by the first external gear, the internal gear ring and the second external gear, which, together with the rotating shaft and the rotating sleeve, enables a single drive mechanism to drive the rotating shaft and the rotating sleeve to rotate in opposite directions, thereby causing the upper and lower stirring paddles to rotate in opposite directions inside the stirring tank. This creates a forced convection circulation in opposite directions within the mixing tank, effectively avoiding the "vortex" phenomenon caused by fluid following in traditional single-shaft mixing. It eliminates the mixing dead zones in the middle and sidewall areas of the mixing tank, ensuring rapid and uniform mixing of sodium carbonate powder and water, and guaranteeing the uniformity of the prepared solution concentration. Simultaneously, the upper and lower scrapers clean the inner walls of the upper and lower halves of the mixing tank, respectively, achieving continuous wall scraping in sync with the mixing operation. This promptly removes scale formed by sodium carbonate supersaturation precipitation or impurity deposition, effectively preventing scale buildup on the inner wall of the mixing tank. Furthermore, through a drive mechanism and a planetary gear system, it simultaneously achieves the triple functions of reverse rotation of the shaft and rotating sleeve, upper and lower double-layer mixing, and upper and lower double-layer wall scraping. This eliminates the need for multiple motors or complex control logic. Compared to existing technologies that use multiple agitators or add independent scraper drive devices, this device features a highly integrated structure, high transmission efficiency, low manufacturing cost, and low operating energy consumption. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic cross-sectional view of an embodiment of this application; Figure 2 Examples of this application Figure 1 Enlarged view of region A in the middle; Figure 3 Examples of this application Figure 1 Enlarged view of region B in the middle; Figure 4 This is a schematic diagram of the overall structure of an embodiment of this application.

[0018] Reference numerals: 1. Mixing tank; 10. Inlet; 11. Outlet; 12. Power box; 2. Rotating shaft; 20. First external gear; 21. Internal gear ring; 210. Third connecting rod; 22. Second external gear; 220. Vertical rod; 23. Rotating sleeve; 24. Upper stirring paddle; 25. Upper scraper; 26. Lower stirring paddle; 27. Lower scraper; 28. First connecting rod; 29. ​​Second connecting rod; 3. Stirring rod; 30. Through hole; 4. Rotating drum; 40. Notch; 5. Motor; 50. Gearbox; 51. Torque sensor; 6. Water outlet pipe; 60. First solenoid valve; 61. Detection pipe; 62. Second solenoid valve; 7. Support; 70. Support platform. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0021] The following reference Figures 1 to 4 This application describes a batching apparatus for lithium carbonate production according to some embodiments.

[0022] Example A batching device for lithium carbonate production includes a mixing tank 1 and an inlet 10 and an outlet 11 thereon. Multiple inlets 10 are provided, each for different materials. The appropriate number of inlets 10 is selected according to different processes. In this embodiment, three inlets 10 are provided. A power box 12 is provided on the top surface inside the mixing tank 1. A rotating shaft 2 is rotatably mounted inside the power box 12. A first external gear 20 is mounted on the rotating shaft 2. An internal gear ring 21, concentric with the first external gear 20, is rotatably mounted inside the power box 12. A second external gear 22 is provided between the first external gear 20 and the internal gear ring 21, meshing with the internal gear ring 21 and the first external gear 20. A rotating sleeve is rotatably mounted on the rotating shaft 2. A rotating sleeve 23 is provided, and the internal gear ring 21 is connected to the rotating sleeve 23. Both the rotating sleeve 23 and the rotating shaft 2 extend into the mixing tank 1. The bottom ends of the rotating sleeve 23 and the rotating shaft 2 pass through the bottom surface of the power box 12 and enter the mixing tank 1. The rotating sleeve 23 is provided with an upper stirring paddle 24 near the top surface of the mixing tank 1 and an upper scraper 25 for cleaning the inner wall of the upper half of the mixing tank 1. The rotating shaft 2 is provided with a lower stirring paddle 26 near the bottom surface of the mixing tank 1 and a lower scraper 27 for cleaning the inner wall of the lower half of the mixing tank 1. The mixing tank 1 is provided with a driving mechanism for driving the rotating shaft 2 to rotate. Preferably, a sealing cover communicating with the inside of the mixing tank 1 is provided on the top surface of the mixing tank 1, and the inside of the mixing tank 1 is cleaned by opening the sealing cover.

[0023] A planetary gear system is formed by the first external gear 20, the internal gear ring 21, and the second external gear 22. This system, in conjunction with the rotating shaft 2 and the rotating sleeve 23, enables a single drive mechanism to rotate the rotating shaft 2 and the rotating sleeve 23 in opposite directions. This causes the upper stirring paddle 24 and the lower stirring paddle 26 to rotate in opposite directions within the mixing tank 1. This creates two layers of forced convection circulation in opposite directions within the mixing tank 1, effectively avoiding the "vortex" phenomenon caused by fluid following in traditional single-shaft mixing. It also eliminates the mixing dead zones in the middle and sidewall areas of the mixing tank 1, ensuring the mixing of sodium carbonate... The rapid and uniform mixing of solid powder and water ensures the uniformity of the concentration of the prepared solution. At the same time, the upper scraper 25 and the lower scraper 27 respectively clean the inner walls of the upper and lower halves of the mixing tank 1, realizing a continuous wall scraping function in sync with the mixing operation. This effectively removes the scale layer formed by the precipitation of sodium carbonate due to supersaturation or the deposition of impurities, preventing the scale layer on the inner wall of the mixing tank 1 from thickening. The upper stirring paddle 24 and the upper scraper 25, and the lower stirring paddle 26 and the lower scraper 27 are integrated on the same rotating component, forming two independent "stirring-scraping" units. While cleaning the upper half of the barrel wall, the upper scraper 25 assists the upper stirring paddle 24 in pushing undissolved sodium carbonate particles that may adhere to the wall of the mixing barrel 1 into the main flow field. While cleaning the bottom and the lower half of the barrel wall, the lower scraper 27 works with the lower stirring paddle 26 to prevent high-density sodium carbonate particles from depositing and agglomerating at the bottom of the mixing barrel 1. This fundamentally solves the problem of dead zones easily forming in the bottom center and barrel wall area of ​​the mixing barrel 1 in traditional devices, and the long-term accumulation and scaling of materials. Therefore, this device can maintain the cleanliness of the inner wall of the mixing barrel 1, the stability of the flow field, and the uniformity of solution concentration for a long time, reducing the frequency of unplanned shutdowns for cleaning, and significantly improving the continuous operation rate and lithium yield of the production line. Furthermore, through a set of drive mechanisms and a set of planetary gear systems, it simultaneously realizes the triple functions of reverse rotation of the rotating shaft 2 and the rotating sleeve 23, upper and lower double-layer stirring, and upper and lower double-layer wall scraping. There is no need to set up multiple motors or complex control logic. Compared with the existing technology that uses multiple stirrers or adds independent scraper drive devices, this device has a highly integrated structure, high transmission efficiency, low manufacturing cost, and low operating energy consumption.

[0024] Furthermore, such as Figure 1As shown, the rotating sleeve 23 is provided with a first connecting rod 28 connecting the upper scraper 25, and the rotating shaft 2 is provided with a second connecting rod 29 connecting the lower scraper 27. A stirring rod assembly is provided at one end of each of the first and second connecting rods 28 and 29. The stirring rods 3 of the two sets of stirring rod assemblies are arranged alternately, and each set includes multiple stirring rods 3 arranged at equal intervals. The multiple stirring rods 3 on the first connecting rod 28 and the multiple stirring rods 3 on the second connecting rod 29 are arranged alternately. Preferably, two sets of stirring rod assemblies are provided on both the first and second connecting rods 28 and 29. The two sets of stirring rod assemblies on the first connecting rod 28 are located at the upper and lower ends of the first connecting rod 28, and the two sets of stirring rod assemblies on the second connecting rod 29 are located at the upper and lower ends of the second connecting rod 29. The stirring rod assemblies further enhance the mixing effect between the upper stirring paddle 24 and the lower stirring paddle 26.

[0025] Furthermore, such as Figure 1 As shown, there are two of each of the first connecting rods 28 and the second connecting rods 29. The two first connecting rods 28 are positioned opposite each other on the side wall of the rotating sleeve 23, and each is connected to a corresponding upper scraper 25. Similarly, the two second connecting rods 29 are positioned opposite each other on the side wall of the rotating shaft 2, and each is connected to a corresponding lower scraper 27. That is, there are two upper scrapers 25 and two lower scrapers 27. The two first connecting rods 28 are positioned at the left and right ends of the side wall of the rotating sleeve 23. One end away from the rotating sleeve 23 is connected to the corresponding upper scraper 25. Two second connecting rods 29 are set at the left and right ends of the side wall of the rotating shaft 2. The two second connecting rods 29 away from the rotating shaft 2 are connected to the corresponding lower scraper 27. Preferably, two first connecting rods 28 are provided at the upper part and the lower part of the upper scraper 25, and the stirring rod group is set on the first connecting rod 28 at the lower part of the upper scraper 25. Two second connecting rods 29 are provided at the upper part and the lower part of the lower scraper 27, and the stirring rod group is set on the second connecting rod 29 at the upper part of the lower scraper 27.

[0026] Furthermore, such as Figure 1 and Figure 2As shown, the thickness of the internal gear ring 21 is greater than the thickness of the first external gear 20 and the second external gear 22. A vertical rod 220 is provided on the inner top surface of the power box 12. The second external gear 22 is rotatably mounted at the bottom end of the vertical rod 220. The second external gear 22 meshes with the upper part of the inner ring of the internal gear ring 21. A third connecting rod 210 connected to the internal gear ring 21 is provided on the rotating sleeve 23. The third connecting rod 210 is connected to the lower part of the inner ring of the internal gear ring 21. There are two third connecting rods 210, which are located on the left and right side walls of the rotating sleeve 23, respectively. The internal gear ring 21 drives the rotating sleeve 23 to rotate through the third connecting rod 210. Through the internal gear ring 21, the first external gear 20 and the second external gear 22, a single drive mechanism drives the rotating shaft 2 and the rotating sleeve 23 to rotate in opposite directions.

[0027] Furthermore, such as Figure 1 and Figure 3 As shown, the discharge port 11 is located at the center of the bottom surface of the mixing tank 1. A hollow rotating cylinder 4 is provided at the bottom end of the rotating shaft 2. The rotating cylinder 4 is located near the discharge port 11. The bottom end of the rotating cylinder 4 has an open structure. Multiple notches 40 are provided on the side wall of the rotating cylinder 4 near the opening. The multiple notches 40 are arranged at equal intervals along the circumference of the side wall of the rotating cylinder 4. During the stirring process, the solution flows out from the discharge port 11 for easy detection. At this time, the solution enters the discharge port 11 through the notches of the rotating cylinder 4. The bottom end of the rotating cylinder 4 is close to the inner bottom surface of the mixing tank 1, so that large pieces of solid cannot enter the opening of the rotating cylinder 4 and the discharge port 11 through the gap between the bottom end of the rotating cylinder 4 and the inner bottom surface of the mixing tank 1. At the same time, the notches 40 of the rotating cylinder 4 block large pieces of undissolved solid or scale solid, avoiding blockage of the discharge port 11.

[0028] Furthermore, such as Figure 1 As shown, both the upper impeller 24 and the lower impeller 26 are provided with a plurality of uniformly arranged through holes 30. When the upper impeller 24 and the lower impeller 26 rotate, a high-pressure zone is formed on the front side facing the liquid and a low-pressure zone is formed on the back side. The openings on the upper impeller 24 and the lower impeller 26 provide a channel for the fluid. The fluid is flowed from the high-pressure zone to the low-pressure zone, forming a high-speed jet. The high-speed jet directly washes the area on the back side of the upper impeller 24 and the lower impeller 26 that is originally prone to material deposition, preventing the adhesion and growth of solid particles. At the same time, the high-speed jet also removes other potential scaling points, playing a self-cleaning role.

[0029] Furthermore, such as Figure 1 and Figure 4As shown, the drive mechanism includes a motor 5 and a gearbox 50. Both the motor 5 and the gearbox 50 are mounted on the outer top surface of the mixing tank 1. The output shaft of the motor 5 is connected to the input end of the gearbox 50, and the output end of the gearbox 50 is connected to the rotating shaft 2. The gearbox 50 reduces the high-speed input of the motor 5 to the low speed required for mixing. At the same time, according to the law of conservation of power, the output torque is proportionally amplified as the rotation speed decreases, ensuring that the motor 5 has sufficient power to push the upper scraper 25 and the lower scraper 27 to remove the hard scale layer, and can withstand the huge torsional reaction force generated by the reverse mixing of the upper and lower layers.

[0030] Furthermore, such as Figure 1 and Figure 2 As shown, a torque sensor 51 is provided between the gearbox 50 and the rotating shaft 2. The output end of the gearbox 50 is connected to the input end of the torque sensor 51, and the output end of the torque sensor 51 is connected to the rotating shaft 2. When scale adheres to the upper agitator 24 and the lower agitator 26, it will increase the torque of the rotating shaft 2. The torque of the rotating shaft 2 is monitored by the torque sensor 51. When the torque sensor 51 senses that the torque exceeds the preset value, the machine needs to be stopped to clean the scale on the upper agitator 24 and the lower agitator 26.

[0031] Furthermore, such as Figure 1 and Figure 3 As shown, a water outlet pipe 6 is provided on the outlet 11, and a first solenoid valve 60 is provided on the water outlet pipe 6. A detection pipe 61 is provided on the side wall of the water outlet pipe 6 away from the outlet 11 and the first solenoid valve 60, and a second solenoid valve 62 is provided on the detection pipe 61. When the solution needs to be tested, the first solenoid valve 60 and the second solenoid valve 62 are opened, and the solution is transported to the detection device through the detection pipe 61 by a commonly available transfer pump. The detection device is a commonly available ion analyzer, pH meter, and density meter. After the ion analyzer, pH meter, and density meter detect that the solution meets the standard, the first solenoid valve 60 is opened, the second solenoid valve 62 is closed, and the solution is pumped out through the water outlet pipe 6 to the next process.

[0032] Furthermore, such as Figure 1 and Figure 4 As shown, it also includes a support 7, on which the mixing tank 1 is mounted. The support 7 is provided with a support platform 70 for people to stand on. The mixing tank 1 is erected in the air by the support 7. Workers can maintain the device or clean the inside of the mixing tank 1 by standing on the support platform 70.

[0033] In this application, the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A batching device for lithium carbonate production, comprising a mixing tank and an inlet and an outlet thereon, characterized in that, A power box is installed on the top surface of the mixing tank; a rotating shaft is rotatably installed inside the power box; a first external gear is installed on the rotating shaft; an internal gear ring concentric with the first external gear is rotatably installed inside the power box; a second external gear is installed between the first external gear and the internal gear ring; a vertical rod is installed on the top surface of the power box; the second external gear is rotatably installed at the bottom end of the vertical rod; the second external gear meshes with the internal gear ring and the first external gear; a rotating sleeve is rotatably fitted on the rotating shaft; the internal gear ring is connected to the rotating sleeve; both the rotating sleeve and the rotating shaft extend into the mixing tank; an upper stirring blade near the top surface of the mixing tank and an upper scraper for cleaning the inner wall of the upper half of the mixing tank are installed on the rotating sleeve; a lower stirring blade near the bottom surface of the mixing tank and a lower scraper for cleaning the inner wall of the lower half of the mixing tank are installed on the rotating shaft; a drive mechanism for driving the rotating shaft to rotate is installed on the mixing tank.

2. The batching device for lithium carbonate production according to claim 1, characterized in that, The rotating sleeve is provided with a first connecting rod for connecting the upper scraper; the rotating shaft is provided with a second connecting rod for connecting the lower scraper; each of the first and second connecting rods is provided with a stirring rod assembly at one end opposite to the other; the stirring rods of the two sets of stirring rod assemblies are arranged alternately.

3. The batching device for lithium carbonate production according to claim 2, characterized in that, There are two of each of the first and second connecting rods; the two first connecting rods are respectively arranged at opposite positions on the side wall of the rotating sleeve; each of the two first connecting rods is connected to a corresponding upper scraper; the two second connecting rods are respectively arranged at opposite positions on the side wall of the rotating shaft; each of the two second connecting rods is connected to a corresponding lower scraper.

4. The batching device for lithium carbonate production according to claim 1, characterized in that, The thickness of the internal gear ring is greater than the thickness of the first external gear and the second external gear; the second external gear meshes with the upper part of the inner ring of the internal gear ring; a third connecting rod connected to the internal gear ring is provided on the rotating sleeve; the third connecting rod is connected to the lower part of the inner ring of the internal gear ring.

5. A batching device for lithium carbonate production according to claim 1, characterized in that, The discharge port is located at the center of the bottom surface of the mixing tank; a hollow rotating cylinder is provided at the bottom end of the rotating shaft; the rotating cylinder is located near the discharge port; the bottom end of the rotating cylinder has an open structure; multiple notches are provided on the side wall of the rotating cylinder near the opening; the multiple notches are arranged at equal intervals along the circumference of the side wall of the rotating cylinder.

6. A batching device for lithium carbonate production according to claim 1, characterized in that, Both the upper and lower stirring paddles are provided with multiple through holes arranged evenly.

7. A batching device for lithium carbonate production according to claim 1, characterized in that, The drive mechanism includes a motor and a gearbox; both the motor and the gearbox are mounted on the outer top surface of the mixing tank; the output shaft of the motor is connected to the input end of the gearbox; and the output end of the gearbox is connected to a rotating shaft.

8. A batching device for lithium carbonate production according to claim 7, characterized in that, A torque sensor is installed between the gearbox and the rotating shaft; the output end of the gearbox is connected to the input end of the torque sensor; and the output end of the torque sensor is connected to the rotating shaft.

9. A batching device for lithium carbonate production according to claim 1, characterized in that, A water outlet pipe is provided on the discharge port; a first solenoid valve is provided on the water outlet pipe; a detection pipe is provided on the side wall of the water outlet pipe away from the water outlet and the first solenoid valve; a second solenoid valve is provided on the detection pipe.

10. A batching device for lithium carbonate production according to claim 1, characterized in that, It also includes a support frame; the mixing tank is mounted on the support frame; and the support frame is equipped with a support platform for people to stand on.

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