Linkage stirring device of electrolytic furnace

Abstract

The utility model discloses a linkage stirring device of an electrolytic furnace, which comprises a base main body, a rotating framework and a driving device, the rotating framework is rotatably connected to the base main body, and the driving device can drive the rotating framework to rotate relative to the base main body; a plurality of stirring structures are rotationally arranged on the rotating framework, a linkage structure is arranged between the base body and the stirring structures, and when the driving device drives the rotating framework to rotate relative to the base body, under the linkage effect of the linkage structure, the stirring structures rotate relative to the rotating framework to achieve stirring. The utility model has the following advantages and effects: the scheme utilizes a new mechanical structure, and has the effects of realizing continuous stirring, being more uniform in stirring and improving the electrolysis efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic furnace stirring devices, in particular to a linkage stirring device for an electrolytic furnace. Background Art

[0002] The rare earth molten salt electrolysis process is the main method for the production and preparation of rare earth metals. The electrolytic cell is the main equipment in this process, and its structure directly affects the quality of rare earth metal products, work efficiency and production cost. When the rare earth oxide is melted in molten salt, the melting temperature in the electrolysis equipment is above 1000°C. Maintaining a balanced and stable melting temperature during the electrolysis process is one of the prerequisites for the normal operation of the electrolysis process.

[0003] Existing electrolytic furnaces usually place a molybdenum pot for collecting rare earth metals at the bottom of the furnace, and graphite anodes are installed around the furnace. A tungsten-molybdenum alloy rod is inserted in the middle of the furnace as a cathode. The furnace is filled with molten salt. Under the action of the inter-electrode electric field between the cathode and the anode, the molten salt acts as a resistor to generate heat and becomes molten, while maintaining the temperature required for the electrolysis process.

[0004] However, during the electrolysis process, molten salt is deposited at the bottom of the molybdenum pot. In factory production, the molten salt at the bottom of the molybdenum pot needs to be continuously stirred, but the existing stirring device does not stir evenly enough, which easily leads to precipitation dead corners, and needs to be improved urgently. Utility Model Content

[0005] The utility model aims to provide a linkage stirring device for an electrolytic furnace, which has the effects of realizing continuous stirring, making the stirring more uniform and improving the electrolysis efficiency.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a linkage stirring device for an electrolytic furnace, comprising a base body, a rotating structure and a driving device, wherein the rotating structure is rotatably connected to the base body, and the driving device can drive the rotating structure to rotate relative to the base body;

[0007] A plurality of stirring structures are rotatably arranged on the rotating structure, and a linkage structure is arranged between the base body and the stirring structure. When the driving device drives the rotating structure to rotate relative to the base body, the stirring structure is caused to rotate relative to the rotating structure to achieve stirring under the linkage action of the linkage structure.

[0008] By adopting the above technical scheme, the driving device drives the rotating structure to revolve relative to the base body. While the rotating structure rotates, the linkage structure is used to drive the stirring structure to rotate relative to the rotating structure to achieve the purpose of stirring. The utility model adopts the driving device as the driving force to drive the rotating structure to drive the stirring structure to rotate continuously, and at the same time uses the linkage effect of the linkage structure to drive the stirring structure to rotate relative to the rotating structure for stirring, so as to continuously stir the bottom of the molybdenum pot. The utility model uses the rotating structure to revolve relative to the base body and the stirring structure to rotate relative to the rotating structure, so that the stirring structure stirs the molten salt in the molybdenum pot more evenly, so that the molten salt at the bottom of the molybdenum pot can be effectively electrolyzed to separate rare earth metals, thereby improving the precipitation purity and production efficiency of rare earth metals, and has the effects of achieving continuous stirring, more uniform stirring, and improved electrolysis efficiency.

[0009] The utility model is further configured as follows: the linkage structure includes a sun gear and a plurality of planetary gears, the sun gear is fixedly connected to the base body, a plurality of planetary gears are arranged on the rotating structure and rotate around the sun gear, and the planetary gears are meshed with the sun gear, and the planetary gears are transmission-connected to the stirring structure.

[0010] By adopting the above technical solution, since the planetary gears are meshed with the sun gears, while the rotating structure revolves relative to the base body, the planetary gears located on the surface of the rotating structure will also mesh and rotate around the sun gears, thereby realizing the rotation of the planetary gears relative to the rotating structure, thereby driving the stirring structure to produce a rotating stirring effect.

[0011] The utility model is further configured as follows: the stirring structure includes a stirring leg and a stirring blade, the stirring leg is rotatably connected to the rotating structure, the stirring blade is fixedly connected to the stirring leg, and the stirring leg is connected to the planetary gear through a transmission assembly.

[0012] By adopting the above technical solution, when the planetary gear rotates, the stirring leg is driven to rotate through the transmission component, so that the stirring blade rotates circumferentially around the stirring leg to achieve stirring.

[0013] The utility model is further configured as follows: the stirring blade is connected to the stirring leg by heat riveting.

[0014] By adopting the above technical solution, the hot riveting connection method is beneficial to improving the connection firmness of the stirring blade on the stirring leg, thereby extending the service life of the utility model.

[0015] The utility model is further configured as follows: the rotating structure includes a rotating disk and a retaining frame fixedly connected, the transmission assembly includes a rotating shaft and universal joints arranged at both ends of the rotating shaft, the rotating shaft is arranged between the rotating disk and the retaining frame, one end of the rotating shaft is connected to the planetary gear through a universal joint, and the other end of the rotating shaft is connected to the stirring leg through another universal joint.

[0016] By adopting the above technical solution, the rotation of the rotating disk will drive the retaining frame to rotate synchronously, and the rotating shaft will rotate synchronously around the sun gear and follow the retaining frame. At the same time, under the meshing of the sun gear and the planetary gears, the rotation is also relative to the rotation of the retaining frame. The retaining frame serves as a transition connection between the rotating shaft and the stirring leg. At the same time, the universal joint is used to make the rotation freedom of the rotating shaft higher, which is beneficial to improving the smoothness of the rotation of the rotating shaft between the rotating disk and the retaining frame.

[0017] The utility model is further configured as follows: the planetary gears, the stirring legs and the corresponding universal joints are fixedly connected via a connecting shaft, the connecting shaft is rotatably arranged on the corresponding rotating disk and retaining frame, and bearings and oil seals are arranged between the rotating disk, the retaining frame and the corresponding connecting shaft.

[0018] By adopting the above technical solution, the connecting shaft plays a connecting role, which is used to improve the smoothness of the rotation of the universal joints between the two sides of the rotating shaft and the planetary gears and the stirring legs, and at the same time it can also improve the concentricity of the rotation of the stirring legs. The bearing can improve the smoothness of the rotation between the connecting shaft and the rotating disk and the retaining frame. The oil seal is used to seal the lubricating oil between the connecting shaft and the rotating disk and the retaining frame.

[0019] The utility model is further configured as follows: the stirring legs are connected to the corresponding connecting shafts via a quick connector.

[0020] By adopting the above technical solution, the design of the quick connector can facilitate the rapid disassembly and assembly between the stirring leg and the connecting shaft rotatably connected to the retaining frame, thereby improving the convenience of disassembly and assembly of the stirring leg.

[0021] The utility model is further configured as follows: the driving device comprises a cylinder, the cylinder is rotatably connected to the base body via an articulated connection, and a piston rod of the cylinder is articulated to the rotating structure.

[0022] By adopting the above technical solution, the expansion and contraction of the piston rod of the cylinder drives the rotating frame to rotate forward or reverse relative to the base body, and the hinged connection piece can offset the stress caused by the cylinder displacement caused by the expansion and contraction of the piston rod of the cylinder.

[0023] The utility model is further configured as follows: the sun gear is fixedly connected to the base body via a fixing column, and the rotating structure is rotatably connected to the base body with the fixing column as the center.

[0024] The utility model is further configured as follows: the rotating structure is fixedly provided with a connecting sleeve, the rotating structure is rotatably arranged on the fixing column through the connecting sleeve, and a plurality of bearings are arranged between the connecting sleeve and the fixing column.

[0025] By adopting the above technical solution, the addition of the bearing can reduce the friction coefficient between the connecting sleeve and the fixed column. At the same time, the rotational cooperation between the connecting sleeve and the fixed column is beneficial to improve the concentricity and smoothness of the rotation of the rotating structure relative to the base body.

[0026] In summary, the utility model has the following beneficial effects:

[0027] The rotating structure is rotatably set on a fixed column of a base body, a sun gear is coaxially fixed on the fixed column, a number of planetary gears are rotatably set on the rotating structure around the sun gear, the planetary gears are meshed with the sun gear, and the piston rod of the cylinder is extended and retracted to drive the rotating structure to drive the stirring legs to rotate forward or reverse relative to the base body. At the same time, the planetary gears rotate through the connecting shaft and the universal joint to drive the stirring legs to rotate relative to the rotating structure, and continuous stirring is achieved by the stirring plates of the stirring legs, so that the molten salt at the bottom of the molybdenum pot can be effectively electrolyzed to separate rare earth metals, thereby improving the precipitation purity and production efficiency of rare earth metals. It has the effects of achieving continuous stirring, more uniform stirring, and improved electrolysis efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the utility model.

[0029] Figure 2 It is a structural diagram of the utility model, and the dust cover is not shown.

[0030] Figure 3 This utility model Figure 2 Longitudinal section view of .

[0031] Figure 4 This utility model Figure 3 A partial enlarged view of area A.

[0032] Figure 5 This utility model Figure 2 Another longitudinal sectional view of .

[0033] Figure 6 This utility model Figure 5 A partial enlarged view of area B.

[0034] In the figure: 1. base body; 2. rotating structure; 21. rotating disk; 22. retaining frame; 23. connecting sleeve; 3. cylinder; 31. hinged connection; 4. stirring structure; 41. stirring leg; 42. stirring blade; 5. linkage structure; 51. sun gear; 511. fixed column; 52. planetary gear; 6. transmission assembly; 61. rotating shaft; 62. universal joint; 63. connecting shaft; 64. quick connector; 7. bearing; 8. oil seal; 9. dust cover. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings.

[0036] A linkage stirring device for an electrolytic furnace, such as Figure 1-2 As shown, it includes a base body 1, a rotating frame 2 and a driving device. The rotating frame 2 is rotatably connected to the base body 1, and the driving device can drive the rotating frame 2 to rotate relative to the base body 1; a plurality of stirring structures 4 are rotatably provided on the rotating frame 2, and a linkage structure 5 is provided between the base body 1 and the stirring structure 4. When the driving device drives the rotating frame 2 to rotate relative to the base body 1, under the linkage action of the linkage structure 5, the stirring structure 4 is rotated relative to the rotating frame 2 to achieve stirring; the driving device includes a cylinder 3, and the cylinder 3 is rotatably connected to the base body 1 through an articulated connection 31. The piston rod of the cylinder 3 is hinged to the rotating frame 2. The extension and retraction of the piston rod of the cylinder 3 drives the rotating frame to rotate forward or reverse relative to the base body 1. At the same time, the articulated connection 31 can be used to offset the stress caused by the extension and retraction of the piston rod of the cylinder 3 causing the cylinder 3 to deviate.

[0037] like Figure 1-4As shown, the linkage structure 5 includes a sun gear 51 and three sets of planetary gears 52. The sun gear 51 is fixedly connected to the base body 1. The three sets of planetary gears 52 are arranged on the rotating frame 2 and rotate around the sun gear 51. The angle formed by adjacent planetary gears 52 with the rotation center axis of the sun gear 51 as the center is set to 120°, and the planetary gears 52 are meshed with the sun gear 51. The planetary gears 52 are transmission connected to the stirring structure 4. Since the planetary gears 52 are meshed with the sun gear 51, while the rotating frame 2 revolves relative to the base body 1, the planetary gears 52 located on the surface of the rotating frame 2 will also mesh and rotate around the sun gear 51, so as to realize the self-rotation of the planetary gears 52 relative to the rotating frame 2, thereby driving the stirring structure 4 to produce a rotating stirring effect; the stirring structure 4 includes a stirring leg 41 and a stirring blade 42. The stirring leg 41 is rotatably connected to the rotating frame 2, and the stirring blade 42 is fixedly connected to the stirring leg 41. The transmission connection is through the transmission component 6. When the planetary gear 52 rotates, the transmission component 6 drives the stirring leg 41 to rotate, so that the stirring blade 42 rotates circumferentially around the stirring leg 41 to achieve stirring; the stirring blade 42 is connected to the stirring leg 41 by hot riveting. The hot riveting connection method is beneficial to improving the connection firmness of the stirring blade 42 on the stirring leg 41, thereby extending the service life of the utility model. The stirring structure 4 in this embodiment is provided with three groups. The three groups of stirring structures 4 are equally spaced circumferentially around the rotation center axis of the rotating frame 2. The stirring blade 42 is made of Hastelloy material, and the stirring leg 41 is made of high-temperature resistant stainless steel pipe. The different thermal expansion coefficients of the two materials are used to fix the two together by the hot riveting process, which can extend the service life of the stirring structure 4; this embodiment is provided with a dust cover 9 above the sun tooth path. The dust cover 9 can effectively prevent dust from falling into the meshing gap between the sun gear 51 and the planetary gear 52 and causing jamming.

[0038] like Figure 4-6As shown, the rotating structure 2 includes a rotating disk 21 and a retaining frame 22 that are fixedly connected, and the transmission assembly 6 includes a rotating shaft 61 and universal joints 62 arranged at both ends of the rotating shaft 61. The rotating shaft 61 is arranged between the rotating disk 21 and the retaining frame 22. One end of the rotating shaft 61 is connected to the planetary gear 52 through a universal joint 62, and the other end of the rotating shaft 61 is connected to the stirring leg 41 through another universal joint 62. The rotation of the rotating disk 21 will drive the retaining frame 22 to rotate synchronously, and the rotating shaft 61 rotates synchronously around the sun gear 51 and follows the retaining frame 22. At the same time, under the meshing of the sun gear 51 and the planetary gear 52, the rotation also rotates relative to the retaining frame 22. The retaining frame 22 plays a transitional role between the rotating shaft 61 and the stirring leg 41. At the same time, the universal joint 62 makes the rotation freedom of the rotating shaft 61 higher, which is conducive to improving the smoothness of the rotation of the rotating shaft 61 between the rotating disk 21 and the retaining frame 22; the planetary gear 52, The stirring leg 41 is fixedly connected to the corresponding universal joint 62 by a connecting shaft 63, and the connecting shaft 63 is rotatably arranged on the corresponding rotating disk 21 and the retaining frame 22, and bearings 7 and oil seals 8 are arranged between the rotating disk 21, the retaining frame 22 and the corresponding connecting shaft 63. The connecting shaft 63 plays a connecting role, which is used to improve the smoothness of the rotation of the universal joint 62 between the two sides of the rotating shaft 61 and the planetary gears 52 and the stirring leg 41, and at the same time improve the concentricity of the rotation of the stirring leg 41. The bearing 7 can improve the smoothness of the rotation between the connecting shaft 63 and the rotating disk 21 and the retaining frame 22, and the oil seal 8 is used to seal the lubricating oil between the connecting shaft 63 and the rotating disk 21 and the retaining frame 22; the stirring leg 41 and the corresponding connecting shaft 63 are connected by a quick connector 64. The design of the quick connector 64 can facilitate the quick disassembly and assembly between the stirring leg 41 and the connecting shaft 63 rotatably connected on the retaining frame 22, thereby improving the convenience of disassembly and assembly of the stirring leg 41.

[0039] like Figure 4 As shown, the sun gear 51 is fixedly connected to the base body 1 through a fixed column 511, and the rotating frame 2 is rotatably connected to the base body 1 with the fixed column 511 as the center; the rotating frame 2 is fixedly provided with a connecting sleeve 23, and the rotating frame 2 is rotatably arranged on the fixed column 511 through the connecting sleeve 23, and a plurality of bearings 7 are arranged between the connecting sleeve 23 and the fixed column 511. The addition of the bearings 7 can reduce the friction coefficient between the connecting sleeve 23 and the fixed column 511, and at the same time, the rotational cooperation between the connecting sleeve 23 and the fixed column 511 is utilized to improve the concentricity and smoothness of the rotation of the rotating frame 2 relative to the base body 1.

[0040] The basic working principle of the utility model is: the piston rod of the cylinder 3 is extended and retracted to drive the rotating frame 2 to revolve relative to the fixed column 511 of the base body 1. While the rotating frame 2 rotates, the meshing action of the planetary gear 52 and the sun gear 51 is utilized, so that the planetary gear 52 is transmitted through the connecting shaft 63, the universal joint 62 and the rotating shaft 61, so that the stirring leg 41 follows the rotating frame 2 to revolve relative to the base body 1, and the stirring leg 41 can also rotate relative to the rotating frame 2, thereby achieving the purpose of continuous stirring of the bottom of the molybdenum pot by the stirring plate 42. The utility model utilizes the revolution of the rotating frame 2 relative to the base body 1 and the rotation of the stirring structure 4 relative to the rotating frame 2, so that the stirring structure 4 stirs the molten salt in the molybdenum pot more evenly, so that the molten salt at the bottom of the molybdenum pot can be effectively electrolyzed to separate rare earth metals, thereby improving the precipitation purity and production efficiency of rare earth metals, and has the effects of achieving continuous stirring, more uniform stirring, and improved electrolysis efficiency.

[0041] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A linkage stirring device for an electrolytic furnace, characterized in that: It comprises a base body (1), a rotating structure (2) and a driving device, wherein the rotating structure (2) is rotatably connected to the base body (1), and the driving device can drive the rotating structure (2) to rotate relative to the base body (1); A plurality of stirring structures (4) are rotatably arranged on the rotating structure (2), and a linkage structure (5) is arranged between the base body (1) and the stirring structure (4). When the driving device drives the rotating structure (2) to rotate relative to the base body (1), the linkage action of the linkage structure (5) causes the stirring structure (4) to rotate relative to the rotating structure (2) to achieve stirring.

2. The linkage stirring device for an electrolytic furnace according to claim 1, characterized in that: The linkage structure (5) comprises a sun gear (51) and a plurality of planetary gears (52), wherein the sun gear (51) is fixedly connected to the base body (1), and the plurality of planetary gears (52) are arranged on the rotating structure (2) and rotate around the sun gear (51), and the planetary gears (52) are meshed with the sun gear (51), and the planetary gears (52) are transmission-connected to the stirring structure (4).

3. The linkage stirring device for an electrolytic furnace according to claim 2, characterized in that: The stirring structure (4) comprises a stirring leg (41) and a stirring blade (42); the stirring leg (41) is rotatably connected to the rotating structure (2); the stirring blade (42) is fixedly connected to the stirring leg (41); and the stirring leg (41) and the planetary gear (52) are connected in transmission via a transmission assembly (6).

4. The linkage stirring device for an electrolytic furnace according to claim 3, characterized in that: The stirring blade (42) is connected to the stirring leg (41) by heat riveting.

5. The linkage stirring device for an electrolytic furnace according to claim 3, characterized in that: The rotating structure (2) comprises a rotating disk (21) and a retaining frame (22) which are fixedly connected, and the transmission assembly (6) comprises a rotating shaft (61) and universal joints (62) arranged at both ends of the rotating shaft (61). The rotating shaft (61) is arranged between the rotating disk (21) and the retaining frame (22), one end of the rotating shaft (61) is connected to the planetary gear (52) through a universal joint (62), and the other end of the rotating shaft (61) is connected to the stirring leg (41) through another universal joint (62).

6. The linkage stirring device for an electrolytic furnace according to claim 5, characterized in that: The planetary gear (52), the stirring leg (41) and the corresponding universal joint (62) are fixedly connected via a connecting shaft (63); the connecting shaft (63) is rotatably arranged on the corresponding rotating disk (21) and the retaining frame (22); and bearings (7) and oil seals (8) are arranged between the rotating disk (21), the retaining frame (22) and the corresponding connecting shaft (63).

7. The linkage stirring device for an electrolytic furnace according to claim 6, characterized in that: The stirring leg (41) is connected to the corresponding connecting shaft (63) via a quick connector (64).

8. The linkage stirring device for an electrolytic furnace according to claim 1, characterized in that: The driving device comprises a cylinder (3), the cylinder (3) is rotatably connected to the base body (1) via an articulated connection (31), and the piston rod of the cylinder (3) is articulated to the rotating frame (2).

9. The linkage stirring device for an electrolytic furnace according to claim 2, characterized in that: The sun gear (51) is fixedly connected to the base body (1) via a fixed column (511), and the rotating structure (2) is rotatably connected to the base body (1) with the fixed column (511) as the center.

10. The linkage stirring device for an electrolytic furnace according to claim 9, characterized in that: The rotating structure (2) is fixedly provided with a connecting sleeve (23), and the rotating structure (2) is rotatably arranged on the fixed column (511) through the connecting sleeve (23), and a plurality of bearings (7) are arranged between the connecting sleeve (23) and the fixed column (511).

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