A stirring device for the precipitation of rare earth chlorides
By designing a stirring device for rare earth chloride precipitation, and employing forward and reverse stirring technology and a filter screen structure, the problems of uneven mixing and precipitate accumulation during the precipitation process of rare earth chloride solution were solved, achieving efficient precipitation and filtration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANSU RARE EARTH NEW MATERIAL CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-19
AI Technical Summary
In the prior art, rare earth chloride solutions are prone to forming axisymmetric vortex flow fields caused by unidirectional stirring during the precipitation process, resulting in low-velocity stagnant zones near the bottom and walls of the container, leading to localized uneven mixing and sediment accumulation.
A stirring device is used, including a sedimentation tank, a rotating column, a half gear, a first gear, a connecting column, a rotating disk, and stirring blades. It stirs the fluid by reversing the direction of motion, thereby avoiding unidirectional stirring and forming a fixed fluid circulation pattern. A filter screen is also installed to filter the sediment.
It achieves uniform mixing of rare earth chloride solution, improves sedimentation rate and sedimentation efficiency, prevents precipitates from accumulating on the bottom or wall of the tank, reduces cleaning difficulty, and improves the looseness and filtration effect of the product.
Smart Images
Figure CN224377772U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stirring technology, specifically to a stirring device for rare earth chloride precipitation. Background Technology
[0002] Rare earth chlorides are a class of compounds composed of rare earth elements and chlorine, playing an important role in multiple fields. In agriculture, they promote plant growth: appropriate amounts of rare earth chlorides can act as plant growth regulators, promoting seed germination, increasing germination rate and vigor, and resulting in robust seedling growth. For example, in some crop cultivation, treating seeds with rare earth chlorides leads to faster and more uniform emergence. Simultaneously, it enhances photosynthesis, increases chlorophyll content, promotes root development, and increases crop yield and improves quality. For instance, in vegetable cultivation, it can make vegetable leaves thicker, greener, and fruits larger and tastier. In the metallurgical industry, rare earth chlorides can be used as additives in non-ferrous metal smelting processes. In the environmental protection field, rare earth chlorides, including their compounds such as lanthanum chloride and anhydrous rare earth chlorides, play a vital role through their unique chemical properties and functions.
[0003] In existing technologies, when rare earth chloride solutions are precipitated, stirring is required to ensure that the precipitant, such as oxalic acid or ammonia, is fully mixed with the rare earth chloride solution to avoid local over-concentration or uneven reaction. Stirring also enhances liquid convection, promotes the aggregation of small crystals into larger precipitate particles, and increases the settling velocity. The common stirring method is to stir and mix the rare earth chloride solution by unidirectional mechanical stirring. However, unidirectional stirring easily forms a fixed fluid circulation pattern, which creates an axisymmetric vortex flow field. This can lead to low-velocity stagnant zones near the bottom and walls of the container, resulting in local uneven mixing or precipitate accumulation. Utility Model Content
[0004] The purpose of this invention is to provide a stirring device for rare earth chloride precipitation, so as to solve the problems existing in the prior art.
[0005] The technical solution adopted in this utility model is as follows:
[0006] A stirring device for rare earth chloride precipitation includes a precipitation chamber 1, a mounting frame 2 fixed on the top of the precipitation chamber 1, a drive motor 4 fixedly mounted on the mounting frame 2, and the drive shaft of the drive motor 4 passing downward through the mounting frame 2 and fixedly connected to a rotating column 5.
[0007] A half gear 6 is fixedly installed on the lower end of the rotating column 5. A first gear 13 is arranged on the side of the half gear 6. The first gear 13 meshes with the first gear tooth 7 on the half gear 6. A support frame 8 is fixed on the top of the sedimentation tank 1 below the first gear 13. A connecting column 9 is fixedly arranged in the center of the first gear 13. The connecting column 9 moves through the support frame 8. A rotating disk 10 is fixedly arranged at the bottom of the connecting column 9. Several rotating tubes 11 are arranged on the lower side of the rotating disk 10. Several stirring blades 12 are fixedly arranged on the rotating tubes 11.
[0008] A reversing assembly is provided on the outside of the rotating column 5. The reversing assembly includes a half-gear ring 14, which is connected to the rotating column 5 through several connecting brackets 15. The second gear 16 on the inner side of the half-gear ring 14 meshes with the first gear 13.
[0009] Several fixed posts 17 are fixedly installed on the bottom surface of the rotating disk 10, and the rotating tube 11 is sleeved on the fixed posts 17 through bearings 18.
[0010] The sedimentation tank 1 has inclined platforms 20 fixedly installed on all four sides of the bottom. The bottom of the sedimentation tank 1 has two water outlet holes 21, and a solenoid valve 22 is installed in each water outlet hole 21.
[0011] The sedimentation chamber 1 is provided with a filter shell 19 at its outer bottom, and a filter screen 24 is fixedly installed inside the filter shell 19.
[0012] Two mounting columns 25 are fixedly installed on the left and right sides of the bottom of the sedimentation tank 1. A snap-fit column 26 is fixedly installed inside the mounting column 25. Sliding grooves 27 are respectively opened on the left and right sides of the filter shell 19, and the snap-fit column 26 is movably snapped into the sliding groove 27.
[0013] The bottom of the filter housing 19 is provided with a drain hole 28, and a discharge pipe 23 is fixedly sleeved inside the drain hole 28. A discharge valve 3 is fixedly sleeved on the discharge pipe 23.
[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0015] 1. This utility model uses a settling chamber, mounting frame, drive motor, rotating column, half gear, first gear tooth, connecting column, rotating disk, rotating tube and stirring blade in cooperation to stir the rare earth chloride solution, thereby facilitating the full mixing of the precipitant and rare earth chloride solution, avoiding local over-concentration or uneven reaction, and the stirring can enhance liquid convection, promote the aggregation of small crystals into larger precipitate particles, and improve the settling speed;
[0016] 2. This utility model uses a semi-gear ring to drive the connecting column, rotating disk, rotating tube and stirring blades to rotate regularly in both directions. This avoids the fixed fluid circulation pattern that is easily formed by unidirectional stirring, which can lead to stagnant areas on the bottom and inner wall of the sedimentation tank, causing uneven mixing or sediment accumulation. By rotating in both directions, the direction of fluid movement can be changed, disrupting the stable flow field and ensuring that all areas of the solution are periodically swept, preventing sediment from adhering and accumulating on the bottom or wall of the tank, reducing cleaning difficulty. The multi-directional shear force generated by the rotation can inhibit the unidirectional growth of crystals, allowing sediment particles to nucleate and grow uniformly in multiple directions, avoiding particle agglomeration or chain structures caused by unidirectional stirring, improving the looseness of the product, and facilitating subsequent filtration and washing.
[0017] 3. This utility model uses a filter screen to allow the rare earth chloride solution to be discharged into the filter shell after the rare earth chloride solution has been stirred and precipitated inside the precipitation chamber. The solution then passes through the filter screen, which facilitates the filtration of the crystals precipitated from the rare earth chloride solution. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the mounting bracket structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the half gear ring and the first gear of this utility model;
[0021] Figure 4 This is a schematic diagram of the rotating disk part of this utility model;
[0022] Figure 5 This is a schematic diagram of the sedimentation tank part of this utility model;
[0023] Figure 6 This is a schematic diagram of the water outlet and filter shell of this utility model.
[0024] Figure 7 This is a schematic diagram of the filter shell structure of this utility model;
[0025] Figure 8 This is a schematic diagram of the mounting column structure of this utility model;
[0026] Reference numerals: 1. Sedimentation tank; 2. Mounting frame; 3. Drain valve; 4. Drive motor; 5. Rotating column; 6. Half gear; 7. First gear tooth; 8. Support frame; 9. Connecting column; 10. Rotating disk; 11. Rotating pipe; 12. Agitator blade; 13. First gear; 14. Half gear ring; 15. Connecting frame; 16. Second gear tooth; 17. Fixed column; 18. Bearing; 19. Filter shell; 20. Inclined platform; 21. Water outlet; 22. Solenoid valve; 23. Discharge pipe; 24. Filter screen; 25. Mounting column; 26. Snap-fit column; 27. Slide groove; 28. Drain hole. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.
[0030] Example 1
[0031] like Figure 1-6This embodiment provides a stirring device for rare earth chloride precipitation, including a precipitation chamber 1. A mounting frame 2 is fixed to the top of the precipitation chamber 1. The mounting frame 2 consists of a vertical plate fixed to the top of the precipitation chamber 1 and a horizontal mounting plate fixed to the vertical plate. A drive motor 4 is fixedly mounted on the horizontal mounting plate of the mounting frame 2. The drive shaft of the drive motor 4 passes downward through the mounting frame 2 and is fixedly connected to a rotating column 5. A half gear 6 is fixedly mounted on the lower end of the rotating column 5. A first gear 13 is arranged beside the half gear 6. The first gear 13 meshes with the first gear tooth 7 on the half gear 6. A support frame 8 is fixedly mounted on the top of the precipitation chamber 1 below the first gear 13. A connecting column 9 is fixedly arranged in the center of the first gear 13. The connecting column 9 moves through a through hole opened on the support frame 8. A rotating disk 10 is fixedly arranged at the bottom of the connecting column 9. Several rotating tubes 11 are arranged below the rotating disk 10. Several stirring blades 12 are fixedly arranged on the rotating tubes 11.
[0032] Several fixed posts 17 are fixedly installed on the bottom surface of the rotating disk 10, and the rotating tube 11 is sleeved on the fixed posts 17 through bearings 18. The inner ring of the bearing 18 is fixedly sleeved on the fixed posts 17, and the outer ring of the bearing 18 is fixedly installed inside the rotating tube 11.
[0033] Workers place rare earth chloride into the sedimentation chamber 1, then add a precipitant to the rare earth chloride solution to convert the rare earth ions in the solution into solid precipitates. Next, the workers turn on the drive motor 4. The drive shaft of the drive motor 4 rotates, causing the rotating column 5 and the half-gear 6 to rotate. Since the first tooth 7 on the half-gear 6 has a half-turn, when the first tooth 7 rotates to the position of the first gear 13, the first tooth 7 meshes with the first gear 13 and drives the first gear 13 to rotate counterclockwise. The first gear 13 then drives the connecting column 9, rotating disk 10, rotating tube 11, and stirring blade 12 to rotate in the sedimentation chamber 1. The stirring blade 12 then agitates the rare earth chloride solution, facilitating thorough mixing of the precipitant, such as oxalic acid or ammonia, with the rare earth chloride solution, preventing localized over-concentration or uneven reaction. Stirring enhances liquid convection, promotes the aggregation of small crystals into larger precipitate particles, and increases the sedimentation rate.
[0034] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The rotating column 5 is provided with a reversing component on its outer side. The reversing component includes a half-tooth ring 14. The half-tooth ring 14 is fixedly connected to the rotating column 5 through a plurality of connecting brackets 15 provided thereon. The half-circle second gear 16 provided on the inner side of the half-tooth ring 14 can mesh with the first gear 13.
[0035] The position of the second tooth 16 on the inner side of the half gear ring 14 is opposite to that of the first tooth 7 on the half gear 6. That is, the second tooth 16 on the half gear ring 14 is located on the side of the half gear 6 without teeth, and the first tooth 7 on the half gear 6 is located on the side of the half gear ring 14 without teeth. Therefore, when the first gear 7 meshes with the first gear 13 and rotates, the second gear 16 is positioned away from the first gear 13. When the half-gear 6 rotates, disengaging the first gear 7 from the first gear 13, the meshing of the first gear 7 with the first gear 13 is released. Then, the rotating column 5 drives the connecting frame 15, the half-gear ring 14, and its second gear 16 to continue rotating. During this rotation, the second gear 16 meshes with the first gear 13, causing the first gear 13 to rotate clockwise. At this time, the first gear 13 drives the connecting column 9, the rotating disk 10, the rotating tube 11, and the stirring blade 12 to rotate clockwise. As the rotating column 5 drives the half-gear 6 and the half-gear ring 14 to continue rotating, the second gear 16 and the first gear 7 can alternately mesh with the first gear 13, causing the first gear 13 to drive the connecting column 9, the rotating disk 10, the rotating tube 11, and the stirring blade 12 to rotate in a regular pattern. The forward and reverse rotation avoids the fixed fluid circulation pattern that easily forms with unidirectional stirring, which leads to stagnant zones near the bottom and inner wall of the sedimentation tank 1, causing uneven mixing or sediment accumulation. By changing the direction of fluid movement through forward and reverse rotation, the stable flow field is disrupted, and all areas of the solution are periodically swept, preventing sediment from adhering and accumulating on the bottom or wall of the tank, reducing cleaning difficulty. The multi-directional shear force generated by forward and reverse rotation can inhibit the unidirectional growth of crystals, allowing the sediment particles to nucleate and grow uniformly in multiple directions, avoiding particle agglomeration or chain structures caused by unidirectional stirring, improving the looseness of the product, and facilitating subsequent filtration and washing. When the stirring blade 12 stirs the rare earth chloride solution inside the sedimentation tank 1, the rare earth chloride solution will generate resistance to the stirring blade 12, and the stirring blade 12 will rotate around the fixed column 17, thereby enhancing the local mixing of the rare earth chloride solution and improving the stirring effect of the rare earth chloride solution.
[0036] refer to Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8The sedimentation tank 1 has inclined platforms 20 fixedly installed on all four sides of its inner bottom. The inclined platforms 20 make the lower part of the sedimentation tank 1 gradually narrow to facilitate material discharge. Two water outlet holes 21 are opened on the bottom surface of the sedimentation tank 1, and a solenoid valve 22 is fixedly sleeved inside the water outlet hole 21. The outer bottom of the sedimentation tank 1 is also provided with a filter shell 19 with an upper opening. A filter screen 24 is fixedly installed inside the filter shell 19. Two mounting columns 25 are fixedly installed on the left and right sides of the outer bottom surface of the sedimentation tank 1. A snap-fit column 26 is fixedly installed on the inner side of the mounting column 25. Sliding grooves 27 are opened on the left and right sides of the filter shell 19 respectively. The snap-fit column 26 is movably snapped into the sliding groove 27. A drain hole 28 is opened on the bottom surface of the filter shell 19. A drain pipe 23 is fixedly sleeved inside the drain hole 28. A drain valve 3 is fixedly sleeved on the drain pipe 23.
[0037] After the rare earth chloride solution has been stirred and precipitated inside the precipitation chamber 1, the rare earth chloride solution inside the precipitation chamber 1 is discharged into the filter shell 19 through the water outlet 21 and the solenoid valve 22. Then the rare earth chloride solution will pass through the filter screen 24, which facilitates the filtration of the crystals precipitated in the rare earth chloride solution. By moving the filter shell 19, it can be slid out of the bottom of the precipitation chamber 1, so that the crystals filtered on the top surface of the filter screen 24 can be collected.
[0038] The working principle of this utility model is as follows: First, the operator places rare earth chloride into the interior of the precipitation chamber 1. Then, a precipitant is added to the rare earth chloride solution to convert the rare earth ions in the solution into solid precipitates. Afterward, the operator turns on the drive motor 4. The drive shaft of the drive motor 4 rotates, which drives the rotating column 5 and the half gear 6 to rotate. When the first tooth 7 on the half gear 6 rotates to the position of the first gear 13, the first tooth 7 will mesh with the first gear 13 and drive the first gear 13 to rotate counterclockwise. Then, the first gear 13 will drive the connecting column 9, the rotating disk 10, the rotating tube 11, and the stirring blade 12 to rotate in the precipitation chamber 1. Then, the stirring blade 12 can stir the rare earth chloride solution, which facilitates the thorough mixing of the precipitant, such as oxalic acid or ammonia, with the rare earth chloride solution, avoiding local over-concentration or uneven reaction. Stirring can enhance liquid convection, promote the aggregation of small crystals into larger precipitate particles, and increase the sedimentation rate.
[0039] When the first gear 7 meshes with the first gear 13 and rotates, the second gear 16 is in a position away from the first gear 13. When the half gear 6 rotates and drives the first gear 7 to disengage from the first gear 13, the meshing state between the first gear 7 and the first gear 13 is released. Then, the rotating column 5 drives the connecting frame 15 and the half gear ring 14 to continue rotating. During the rotation, the second gear 16 on the half gear ring 14 will mesh with the first gear 13, and the second gear 16 will drive the first gear 13 to rotate clockwise. At this time, the first gear 13 will drive the connecting column 9, the rotating disk 10, the rotating tube 11, and the stirring blade 12 to rotate clockwise. As the rotating column 5 drives the half gear 6 and the half gear ring 14 to continue rotating, the second gear 16 and the first gear 7 can alternate. The first gear 13 engages, causing the connecting column 9, rotating disk 10, rotating tube 11, and stirring blade 12 to rotate regularly in both directions. This avoids the fixed fluid circulation pattern that can easily form with unidirectional stirring, which can lead to stagnant zones near the bottom and inner wall of the sedimentation tank 1, resulting in uneven mixing or sediment accumulation. By rotating in both directions, the direction of fluid movement can be changed, disrupting the stable flow field and ensuring that all areas of the solution are periodically swept, preventing sediment from adhering and accumulating on the bottom or wall of the tank, thus reducing the difficulty of cleaning. The multi-directional shear force generated by the rotation can inhibit the unidirectional growth of crystals, allowing the sediment particles to nucleate and grow uniformly in multiple directions, avoiding particle agglomeration or chain structures caused by unidirectional stirring, improving the looseness of the product, and facilitating subsequent filtration and washing.
[0040] When the stirring blade 12 stirs the rare earth chloride solution inside the sedimentation chamber 1, the rare earth chloride solution will generate resistance to the stirring blade 12, and the stirring blade 12 will rotate around the fixed column 17, thereby enhancing the local mixing of the rare earth chloride solution and improving the stirring effect of the rare earth chloride solution.
[0041] After the rare earth chloride solution has been stirred and settled inside the sedimentation chamber 1, the rare earth chloride solution inside the sedimentation chamber 1 is discharged into the filter shell 19 through the water outlet 21 and the solenoid valve 22. Then the rare earth chloride solution will pass through the filter screen 24, which makes it easier to filter out the crystals precipitated in the rare earth chloride solution.
Claims
1. A stirring device for rare earth chloride precipitation, comprising a precipitation chamber (1), characterized in that, The sedimentation tank (1) is fixed with a mounting frame (2) on top. A drive motor (4) is fixedly mounted on the mounting frame (2). The drive shaft of the drive motor (4) passes downward through the mounting frame (2) and is fixedly connected to the rotating column (5). A half gear (6) is fixedly installed on the lower end of the rotating column (5). A first gear (13) is arranged on the side of the half gear (6). The first gear (13) meshes with the first gear tooth (7) on the half gear (6). A support frame (8) is fixed on the top of the sedimentation tank (1) below the first gear (13). A connecting column (9) is fixedly arranged in the center of the first gear (13). The connecting column (9) moves through the support frame (8). A rotating disk (10) is fixedly arranged at the bottom of the connecting column (9). Several rotating tubes (11) are arranged on the lower side of the rotating disk (10). Several stirring blades (12) are fixedly arranged on the rotating tubes (11).
2. The stirring device for rare earth chloride precipitation according to claim 1, characterized in that: A reversing assembly is provided on the outside of the rotating column (5). The reversing assembly includes a half-tooth ring (14). The half-tooth ring (14) is connected to the rotating column (5) through several connecting frames (15). The second gear tooth (16) on the inner side of the half-tooth ring (14) meshes with the first gear (13).
3. The stirring device for rare earth chloride precipitation according to claim 1, characterized in that: Several fixed columns (17) are fixedly installed on the bottom surface of the rotating disk (10), and the rotating tube (11) is sleeved on the fixed columns (17) through the bearing (18).
4. The stirring device for rare earth chloride precipitation according to claim 1, characterized in that: The sedimentation tank (1) has inclined platforms (20) fixedly installed on all four sides of the bottom. The bottom of the sedimentation tank (1) has two water outlet holes (21), and a solenoid valve (22) is installed in the water outlet hole (21).
5. The stirring device for rare earth chloride precipitation according to claim 4, characterized in that: The sedimentation chamber (1) is provided with a filter shell (19) at its bottom, and a filter screen (24) is fixedly installed inside the filter shell (19).
6. The stirring device for rare earth chloride precipitation according to claim 5, characterized in that: Two mounting columns (25) are fixedly installed on the left and right sides of the bottom of the sedimentation tank (1). A snap-fit column (26) is fixedly installed inside the mounting column (25). Slide grooves (27) are opened on the left and right sides of the filter shell (19). The snap-fit column (26) is movably snapped into the slide groove (27).
7. The stirring device for rare earth chloride precipitation according to claim 6, characterized in that: The bottom of the filter shell (19) is provided with a drain hole (28), and a discharge pipe (23) is fixedly sleeved in the drain hole (28). A discharge valve (3) is fixedly sleeved on the discharge pipe (23).