Device for cleaning residual rare earth fluoride on waste anode strip

Abstract

The invention relates to the technical field of rare earth electrolysis anode strip fluoride cleaning, in particular to a device for cleaning residual rare earth fluoride of a waste anode strip, which comprises a rack, two guide rail frames are fixedly arranged on the rack and are two angle irons arranged in parallel at intervals, one right-angle side of each angle iron is used for supporting the plane side edge of the anode strip, and the other right-angle side of each angle iron is used for supporting the plane side edge of the anode strip. Stable support is provided for the transmission of the anode strip; an upper rotating roller A, an upper scraper and an upper rotating roller B are sequentially arranged on the upper portion of the guide rail frame in the conveying direction, the upper rotating roller A and the upper rotating roller B are rotationally connected with the rack, a lower scraper is arranged on the portion, below the upper scraper, of the rack, two floating mechanisms connected with the rack are further arranged, and when passing through the upper scraper and the lower scraper, fluoride on the inner arc face and the outer arc face of the anode strip is scraped away. And the working efficiency is greatly improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of rare earth electrolysis anode sheet fluoride cleaning, in particular to a device for cleaning residual rare earth fluoride in waste anode sheets. Background Art

[0002] Molten salt electrolysis is used to produce rare earth metals and alloys using graphite anodes, which have a tile-like structure. After 50 to 60 hours of use, new anodes need to be replaced. A 3 to 8 mm fluoride layer remains on the surface of the old anodes. Rare earths are national strategic materials and need to be recycled.

[0003] The production of 1 ton of rare earth metals and alloys generates 52 kg of scrap anodes. In 2024, the country will produce 70,000 tons of rare earth metals and alloys, generating 3,640 tons of scrap anodes. The surface of the scrap anodes contains 31% to 35% of the total rare earth content, and the 3-8 mm fluoride layer contains 4% to 6% of the total rare earth content. The country's scrap anodes contain approximately 182 tons of rare earths. Calculated at 400,000 yuan per ton for recycling, it will create approximately 72.8 million yuan in economic benefits. Therefore, it is particularly important to manufacture equipment to clean the fluoride on the surface of the anode.

[0004] The existing anode plate fluoride cleaning requires manual scraping, which is inefficient and labor-intensive. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a device for cleaning residual rare earth fluorides from waste anode sheets. The technical problem to be solved is that the cleaning efficiency of fluorides on the inner and outer curved surfaces of waste anode sheets is low and labor-intensive. To solve the above technical problems, the technical solution adopted by the present invention is: A device for cleaning residual rare earth fluorides from waste anode sheets, comprising: frame; Guide rail frames, two guide rail frames are connected to the frame in a fixed manner; The upper part of the guide rail frame is provided with an upper roller A, an upper scraper and an upper roller B in sequence along the conveying direction. The upper roller A and the upper roller B are respectively connected to the frame for rotation; A lower scraper is arranged on a frame below the upper scraper; Two floating mechanisms connected to the frame, the upper scraper and the lower scraper are connected to the frame through a floating mechanism respectively; The power mechanism connected to the frame drives the upper turning roller A and the upper turning roller B to rotate. The upper turning roller A and the upper turning roller B are used to drive the anode sheet to move along the guide rail frame.

[0006] Furthermore, the frame includes a frame body and a cover body, the cover body is connected to the frame body in a fixed manner, and an inlet and outlet are provided on both sides of the cover body; The guide rail frame is fixedly arranged inside the cover body between the inlet and outlet.

[0007] Furthermore, the floating mechanism includes a connecting rod and a screw A. One end of the two screws A is fixedly connected to the upper scraper or the lower scraper, and the other end passes through the connecting rod and is connected to the nut A by a thread. A spring A is provided on the outside of the screw A between the upper scraper or the lower scraper and the connecting rod.

[0008] Furthermore, screws B are fixedly provided at both ends of the connecting rod, and the screws B pass through the cover body and are provided with nuts B through threaded connection.

[0009] Furthermore, the frame is provided with a lower rotating roller A and a lower rotating roller B respectively through a rotating structure; The upper rotating roller A and the upper rotating roller B are connected to a set of power mechanisms; The lower rotating roller A and the lower rotating roller B are connected to another set of power mechanisms; The power mechanism includes a first rotating shaft connected to the upper rotating roller A, the lower rotating roller A, the upper rotating roller B and the lower rotating roller B. The first rotating shaft passes through the cover body and is provided with gears through a key connection. The two gears are connected by a chain. The first rotating shaft is provided with a reduction motor through a key connection. The reduction motor is fixedly connected to the cover body.

[0010] Furthermore, the surfaces of the upper rotating roller A, the lower rotating roller A, the upper rotating roller B and the lower rotating roller B are made of polyurethane or rubber material.

[0011] Furthermore, the outer peripheral surface of the upper rotating roller A is adapted to the outer wall of the anode; The outer peripheral surface of the lower rotating roller A is adapted to the inner wall of the anode; The outer circumference of the upper roller A and the lower roller A are both provided with a number of teeth; An elastic structure is also provided for driving the upper rotating roller A and the lower rotating roller A to move closer together, and the elastic structure is connected to the power mechanism.

[0012] Furthermore, the elastic structure includes a second rotating shaft, a sliding bearing seat, a flexible coupling and a support leg. The two support legs are fixedly arranged on the frame on both sides of the upper rotating roller A and the lower rotating roller A. Each support leg is connected to the two sliding bearing seats in a sliding structure, and the support leg is provided with a spring B for driving the two sliding bearing seats close to each other. The two second rotating shafts are respectively connected to the upper rotating roller A and the lower rotating roller A through keys, and the two ends of each second rotating shaft pass through the corresponding sliding bearing seats, and the two ends of the second rotating shaft are connected to the first rotating shaft at the upper rotating roller A and the lower rotating roller A through a flexible coupling.

[0013] Furthermore, the frame is provided with a hopper in a fixed structure.

[0014] Furthermore, conveyors are provided on both sides of the frame, and the front conveyor frame is provided with a guide frame for correcting the anode sheet through a fixed structure. The guide frame is provided with a trumpet-shaped structure for aligning the anode sheet to the guide rail frame.

[0015] The beneficial effects of the present invention are as follows: by arranging the upper rotating roller A to drive the waste anode sheet to move on the guide rail frame, and then scraping off the fluoride of the waste anode sheet by the upper and lower scrapers, the work efficiency is greatly improved and the labor intensity is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of embodiment 1 of the present invention without the cover body; Figure 3 This is a schematic diagram of the main structure of embodiment 1 of the present invention without the cover body; Figure 4 This is a right side structural schematic diagram of embodiment 1 of the present invention without the cover body; Figure 5 This is a schematic top view of the structure of embodiment 1 of the present invention without the cover body; Figure 6 This is a schematic diagram of the main structure of the floating structure of the present invention in cooperation with the upper scraper and the lower scraper; Figure 7 Schematic diagram of the coordination relationship among the elastic structure, the first rotating shaft, the upper rotating roller A and the lower rotating roller A according to embodiment 2 of the present invention.

[0017] In the picture: 1. Guide rail frame, 2. Frame, 21. Frame body, 22. Cover body, 3. Upper roller A, 4. Upper scraper, 5. Upper roller B, 6. Lower scraper, 7. Floating mechanism, 71. Connecting rod, 72. Screw A, 73. Nut A, 74. Spring A, 75. Screw B, 76. Nut B, 8. Power mechanism, 81. First rotating shaft, 82. Gear, 9. Elastic structure, 91. Second rotating shaft, 92. Sliding bearing seat, 93. Spring B, 94. Flexible coupling, 95. Support leg, 10. Lower roller A, 11. Lower roller B, 12. Hopper, 13. Conveyor, 14. Guide frame, 15. Side cutter, 16. Electric push rod, 17. End cutter, 18. Notch, 19. Contact sensor. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will now be further described in detail with reference to the accompanying drawings and the following examples so that the public can better understand the implementation method of the present invention. The specific implementation scheme of the present invention is as follows: Example 1: A device for cleaning residual rare earth fluorides in waste anode sheets, comprising a frame 2, the frame 2 being fixedly provided with two guide rail frames 1, the two guide rail frames 1 being two triangles arranged in parallel and spaced apart, the right angle side of the triangle being used to support the plane side of the anode sheet, providing stable support for the transmission of the anode sheet; an upper roller A3, an upper scraper 4 and an upper roller B5 are sequentially arranged on the upper part of the guide rail frame 1 along the conveying direction, the upper roller A3 and the upper roller B5 are respectively connected to the frame 2 for rotation, a lower scraper 6 is arranged on the frame 2 below the upper scraper 4, and two floating mechanisms 7 connected to the frame 2 are also provided, the upper scraper 4. The lower scraper 6 is connected to the frame 2 through a floating mechanism 7. The floating mechanism can meet the requirements of cleaning fluorides of different thicknesses. The frame 2 is provided with a power mechanism 8. The power mechanism 8 drives the upper roller A3 and the upper roller B5 to rotate. The upper roller A3 and the upper roller B5 are used to drive the anode sheet to move along the guide rail frame 1. The friction force between the upper roller A3 and the upper roller B5 and the anode sheet pushes the anode sheet to move on the guide rail frame 1. When passing through the upper scraper 4 and the lower scraper 6, the fluoride on the inner and outer arc surfaces of the anode sheet is scraped off, which greatly improves work efficiency and reduces labor intensity.

[0019] Specifically, the frame 2 includes a frame body 21 and a cover body 22. The cover body 22 is connected to the frame body 21 in a fixed manner. The cover body 22 can reduce the dust from floating into the air and improve the quality of the working environment. Only entrances and exits for waste anodes are provided on both sides of the cover body 22. Brush sealing strips can be provided on the cover body 22 around the entrances and exits to prevent dust from overflowing at the entrances and exits.

[0020] The guide rail frame 1 is fixedly arranged inside the cover body 22 between the inlet and outlet. After the anode enters the cover body, it can be directly supported by the guide rail frame 1.

[0021] It should be explained that two sets of floating mechanisms 7 are provided, and the two sets of floating mechanisms 7 are respectively connected to the upper scraper 4 and the lower scraper 6. The floating mechanism 7 includes a connecting rod 71 and a screw A72. One end of the two screws A72 is fixedly connected to the upper scraper 4 or the lower scraper 6, and the other end passes through the connecting rod 71 and is threadedly connected to a nut A73. The connecting rod 71 is slidingly connected to the screw A72. The outside of the screw A72 between the upper scraper 4 and the connecting rod 71 is provided with a spring A74. Similarly, the outside of the screw A72 between the lower scraper 6 and the connecting rod 71 is also provided with a spring A74. The spring A74 pushes the upper scraper 4 or the lower scraper 6 away from the connecting rod 71, giving the scraper a thrust, which plays a floating role to meet the needs of fluoride cleaning of different thicknesses.

[0022] Screws B75 are fixedly provided at both ends of the connecting rod 71, and the screw B75 passes through the cover body 22 and is threadedly connected with a nut B76. With this structural design, loosening the nut B76 can adjust the angle between the scraper and the horizontal plane, and the nut A73 can adjust the distance between the scraper and the connecting rod 71. Through the combined adjustment of the above two, the scraper can be adjusted to a good scraping angle, avoiding the poor scraping effect after the scraper is worn, and improving the service life and scraping effect of the scraper.

[0023] It should be noted that the frame 2 is respectively provided with a lower turning roller A10 and a lower turning roller B11 through a rotating structure. Preferably, the lower turning roller A10 is located at the lower part of the upper turning roller B5, and the lower turning roller A10 is located at the lower part of the upper turning roller A3, which can play a limiting role to prevent the anode sheet from detaching from the guide rail frame 1. The upper turning roller A3 and the upper turning roller B5 are connected to a set of power mechanisms 8, and the lower turning roller A10 and the lower turning roller B11 are connected to another set of power mechanisms 8.

[0024] Specifically, the power mechanism 8 includes a first rotating shaft 81 connected to the upper rotating roller A3, the lower rotating roller A10, the upper rotating roller B5 and the lower rotating roller B11. The first rotating shaft 81 passes through the cover body 22 and is connected with a gear 82 by a key. The two gears 82 are connected by a chain. The first rotating shaft 81 is provided with a reduction motor by a key connection, and the reduction motor is fixedly connected to the cover body 22. It should be noted that the two sets of similar mechanisms 8 can move in forward and reverse directions, for example, the upper rotating roller A3 moves clockwise, and the lower rotating roller A10 moves counterclockwise, thereby ensuring that both can provide power for the movement of the anode sheet.

[0025] In this embodiment, the surfaces of the upper roller A3, the lower roller A10, the upper roller B5 and the lower roller B11 are made of rubber material. In other embodiments, the surfaces of the upper roller A3, the lower roller A10, the upper roller B5 and the lower roller B11 can also be made of polyurethane with a certain degree of elasticity. Firstly, the elastic deformation can offset the difference in the thickness of the anode sheet; secondly, the distance between the upper roller A3 and the lower roller A10 is less than the thickness of the anode sheet, and the distance between the upper roller B5 and the lower roller B is less than the thickness of the anode sheet, thereby increasing the thrust of the anode sheet movement.

[0026] The frame 21 is provided with a hopper 12 in a fixed structure. The hopper 12 is used to collect the scraped fluoride. The fluoride slides through the hopper 12 into a barrel at the bottom of the hopper 12 .

[0027] Example 2: This embodiment further limits the materials of the upper roller A3 and the lower roller A10 of Example 1. Specifically, the upper roller A3 and the lower roller A10 are made of hard materials, such as iron materials. The outer peripheral surface of the upper roller A3 is adapted to the outer wall of the anode, and the outer peripheral surface of the lower roller A10 is adapted to the inner wall of the anode. The outer peripheral walls of the upper roller A3 and the lower roller A10 are both provided with a plurality of teeth. While the teeth move the anode sheet forward, the fluoride on the surface of the anode sheet can be broken in advance, which facilitates subsequent scraping and improves the cleaning quality.

[0028] In order to adapt to fluorides of different anode sheet thicknesses, an elastic structure 9 is provided for driving the upper rotating roller A3 and the lower rotating roller A10 to move closer together. The elastic structure 9 is connected to the power mechanism 8 .

[0029] Specifically, the elastic structure 9 includes a second rotating shaft 91, a sliding bearing seat 92, a flexible coupling 94 and a support leg 95. The two support legs 95 are fixedly arranged on the frame 2 on both sides of the upper roller A3 and the lower roller A10. Each support leg 95 has two through-grooves, and a sliding bearing seat 92 is slidingly arranged in the through-grooves. The sliding bearing seat 92 here has a limiting groove, which can be engaged with the side wall of the through-groove. The sliding bearing seat 92 can slide vertically, and the support leg 95 is provided with a means for driving the two sliding bearing seats 92. The springs B93 are close to each other, and the two second rotating shafts 91 are respectively connected to the upper rotating roller A3 and the lower rotating roller A10 through keys. The two ends of each second rotating shaft 91 pass through the corresponding sliding bearing seat 92. The two ends of the second rotating shaft 91 are connected to the first rotating shaft 81 at the upper rotating roller A3 and the lower rotating roller A10 through a flexible coupling 94. The flexible coupling 94 can be a cross slider coupling. Through the deformation of the internal mechanical structure of the cross slider coupling, the radial offset between the first rotating shaft 81 and the second rotating shaft 91 can be effectively adjusted.

[0030] Example 3: On the basis of the above embodiments, in this embodiment, conveyors 13 are provided on both sides of the frame 2, and the front conveyor 13 frame is provided with a guide frame 14 for correcting the anode sheet through a fixed structure. The guide frame 14 is arranged in a trumpet-shaped structure, which is used to align the anode sheet to the guide rail frame 1. The workers place the waste anode sheet on the front conveyor 13. The anode sheet is driven by the conveyor 13 and gradually moves toward the middle when passing through the inclined section of the guide frame 14 until it moves to the straight section of the guide frame 14 to complete the correction work. The corrected anode sheet is transferred to the guide rail frame 1 in the cover body 22 through the inlet, which reduces the workers' alignment time and improves work efficiency.

[0031] Example 4: Based on the above embodiment, the guide rail frame 1 between the upper turning roller A3 and the upper turning roller B5 is fixedly provided with a side cutter 15. The side cutter 15 protrudes from the guide rail frame 1 and can scrape off the fluoride on both side walls of the anode sheet. At this time, the anode sheet is pressed onto the guide rail frame 1 by the upper turning roller A3 or the upper scraper 4, and can complete the scraping while moving.

[0032] Example 5: In order to solve the problem of fluoride cleaning at the upper and lower ends of the anode sheet, the cover body 22 between the upper roller A3 and the upper roller B5 is fixedly provided with two electric push rods 16, and the output shaft of the electric push rod 16 is fixedly provided with an end cutter 17. The distance between the end cutters 17 is equal to the length of the anode sheet. The guide frame 1 is provided with a gap 18 for the end cutter 17 to pass through. The guide frame 1 in front of the second gap 18 along the conveying direction is provided with a contact sensor. When the contact sensor contacts the anode sheet, it gives an electrical signal to the controller, and the controller gives an electrical signal to the delay switch. The delay switch stops the power supply to the reduction motor after a delay of 1 second, and the reduction motor is decelerated. The motor stops working and the anode sheet stops moving. The function of the delay switch is to allow the fluoride at the end of the anode sheet to run through the end cutter 17. At this time, the controller also sends an electrical signal to the electric push rod 16. The output end of the electric push rod 16 drives the end cutter 17 to move downward to scrape off the fluoride at the end and tail. The electric push rod 16 drives the end cutter 17 to retract. At this time, the sensor at the cover body 22 senses the end cutter 17 and sends an electrical signal to the controller. The controller then sends a start signal to the reduction motor. The reduction motor starts and transmits the anode sheet to the rear conveyor, which improves the level of automation and completes the scraping of all fluorides on the anode sheet.

[0033] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "front", "back", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Although the present invention has been described according to a limited number of embodiments, those skilled in the art, with the benefit of the above description, should understand that other embodiments are conceivable within the scope of the invention described herein.

Claims

1. A device for cleaning residual rare earth fluorides from waste anode sheets, characterized in that: include: frame; Guide rail frames, two guide rail frames are connected to the rack in a fixed manner; The upper part of the guide rail frame is provided with an upper roller A, an upper scraper and an upper roller B in sequence along the conveying direction. The upper roller A and the upper roller B are respectively connected to the frame for rotation; A lower scraper is arranged on a frame below the upper scraper; Two floating mechanisms connected to the frame, the upper scraper and the lower scraper are connected to the frame through a floating mechanism respectively; The power mechanism connected to the frame drives the upper turning roller A and the upper turning roller B to rotate. The upper turning roller A and the upper turning roller B are used to drive the anode sheet to move along the guide rail frame.

2. The device for cleaning residual rare earth fluorides from waste anode sheets according to claim 1, characterized in that: The frame includes a frame body and a cover body, the cover body is fixedly connected to the frame body, and an inlet and outlet are provided on both sides of the cover body; The guide rail frame is fixedly arranged inside the cover body between the inlet and outlet.

3. The device for cleaning residual rare earth fluorides from waste anode sheets according to claim 2, characterized in that: The floating mechanism includes a connecting rod and a screw A. One end of the two screws A is fixedly connected to the upper scraper or the lower scraper, and the other end passes through the connecting rod and is connected to the nut A by a thread. A spring A is provided on the outside of the screw A between the upper scraper or the lower scraper and the connecting rod.

4. The device for cleaning residual rare earth fluorides from waste anode sheets according to claim 3, characterized in that: Screw rods B are fixedly provided at both ends of the connecting rod, and the screw rods B pass through the cover body and are connected with nuts B through threads.

5. The device for cleaning residual rare earth fluorides from waste anode sheets according to claim 2, characterized in that: The frame is provided with lower rotating roller A and lower rotating roller B respectively through a rotating structure; The upper rotating roller A and the upper rotating roller B are connected to a set of power mechanisms; The lower rotating roller A and the lower rotating roller B are connected to another set of power mechanisms; The power mechanism includes a first rotating shaft connected to the upper rotating roller A, the lower rotating roller A, the upper rotating roller B and the lower rotating roller B. The first rotating shaft passes through the cover body and is provided with gears through a key connection. The two gears are connected by a chain. The first rotating shaft is provided with a reduction motor through a key connection. The reduction motor is fixedly connected to the cover body.

6. The device for cleaning residual rare earth fluorides from waste anode sheets according to claim 5, characterized in that: The surfaces of the upper turning roller A, the lower turning roller A, the upper turning roller B and the lower turning roller B are made of polyurethane or rubber material.

7. The device for cleaning residual rare earth fluorides from waste anode sheets according to claim 5, characterized in that: The outer peripheral surface of the upper rotating roller A is adapted to the outer wall of the anode; The outer peripheral surface of the lower rotating roller A is adapted to the inner wall of the anode; The outer circumference of the upper roller A and the lower roller A are both provided with a number of teeth; An elastic structure is also provided for driving the upper rotating roller A and the lower rotating roller A to move closer together, and the elastic structure is connected to the power mechanism.

8. The device for cleaning residual rare earth fluorides from waste anode sheets according to claim 7, characterized in that: The elastic structure includes a second rotating shaft, a sliding bearing seat, a flexible coupling and a support leg. The two support legs are fixedly arranged on the frames on both sides of the upper rotating roller A and the lower rotating roller A. Each support leg is connected to the two sliding bearing seats in a sliding structure, and the support legs are provided with a spring B for driving the two sliding bearing seats close to each other. The two second rotating shafts are respectively connected to the upper rotating roller A and the lower rotating roller A through keys, and the two ends of each second rotating shaft pass through the corresponding sliding bearing seats. The two ends of the second rotating shaft are connected to the first rotating shaft at the upper rotating roller A and the lower rotating roller A through a flexible coupling.

9. The device for cleaning residual rare earth fluorides from waste anode sheets according to claim 2, characterized in that: The frame is provided with a hopper in a fixed structure.

10. The device for cleaning residual rare earth fluorides from waste anode sheets according to claim 2, characterized in that: Conveyors are provided on both sides of the frame. The front conveyor frame is provided with a guide frame for correcting the anode sheet through a fixed structure. The guide frame is provided with a trumpet-shaped structure for aligning the anode sheet to the guide rail frame.

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