A recovery device for recovering high-purity rare earth metals based on waste residues

Abstract

The application discloses a recovery equipment for recycling high-purity rare earth metals based on waste residues, and belongs to the technical field of rare earth recovery devices, which comprises a cleaning pool, a feed hopper fixed to one side of the top of the cleaning pool, a distribution assembly arranged inside the cleaning pool and close to the position below the feed hopper, and a plurality of partition plates fixedly arranged in the cleaning pool, wherein the partition plates are arranged to divide the inner cavity of the cleaning pool into a plurality of containing chambers; the cooperation of the positioning strips and the positioning grooves can promote the multiple distribution units to be laid on the horizontal plane, so that each distribution unit can correspond to the multiple containing chambers in the cleaning pool; when the distribution unit moves to the vicinity of the curved portion, the end of the filter screen close to the roller deflects downward, so that the residues in the distribution unit can fall into the corresponding containing chamber; and according to the different sizes of the residues, the reaction time in each containing chamber is different, thereby the residues can be treated in a targeted manner.

Description

Technical Field

[0001] This invention relates to the field of rare earth recycling equipment technology, and in particular to a recycling device for high-purity rare earth metals based on waste residue. Background Technology

[0002] Some waste residues generated during rare earth production contain many valuable elements and usually need to be temporarily stockpiled before being comprehensively utilized and recycled. When recycling rare earth waste, a certain amount of acid leaching solution needs to be poured into the rare earth waste to dissolve the rare earth.

[0003] Chinese invention patent CN106756041B discloses an acid washing device for rare earth waste recycling and refining. The device uses crushing teeth to initially loosen the waste, thus accelerating the waste in subsequent processing. At the same time, the rotating stirring blades ensure that the waste comes into full contact with the acid leaching solution, achieving the effect of mixing rare earth waste and acid leaching solution and improving its dissolution rate.

[0004] The aforementioned device conveys the waste material through crushing teeth and uses stirring blades to accelerate the dissolution of rare earth waste. However, the dissolution time varies depending on the particle size of the rare earth waste, and the aforementioned structure is not suitable for treating waste of different particle sizes.

[0005] Therefore, it is necessary to provide a recycling device based on waste residue to recover high-purity rare earth metals to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a recycling device for high-purity rare earth metals based on waste residue, in order to solve the problem mentioned in the background art that the existing device accelerates the dissolution of rare earth waste by stirring blades, but the dissolution time varies when the particle size of the rare earth waste is different, and the existing structure is difficult to treat waste of different particle sizes in a targeted manner.

[0007] Based on the above ideas, the present invention provides the following technical solution: a recycling device for high-purity rare earth metals based on waste residue, including a washing tank and a feeding funnel fixed to one side of the top of the washing tank. A material distribution component is provided inside the washing tank and near the bottom of the feeding funnel. Multiple partitions are fixedly provided inside the washing tank, and the inner cavity of the washing tank can be divided into multiple receiving chambers by the partitions.

[0008] The material distribution assembly includes multiple material distribution units arranged in the vertical direction. Each material distribution unit includes a baffle frame and a plug plate fixed to the bottom of the baffle frame. The two ends of the plug plate are slidably engaged with the washing tank. Adjacent material distribution units are engaged by positioning strips, so that when one material distribution unit moves, it can drive multiple material distribution units below to be laid out and correspond one-to-one with the receiving chamber.

[0009] As a further aspect of the present invention: two filters are symmetrically arranged on the inner side of the plug-in plate, and both filters are hinged to the plug-in plate. When multiple material distribution units are laid out in sequence and correspond to the receiving chamber, the filters can be deflected downwards.

[0010] As a further aspect of the present invention: multiple mounting slots are provided inside the cleaning tank and at both sides, the multiple mounting slots are arranged sequentially in the vertical direction and correspond one-to-one with multiple component feeding units, two guide strips are symmetrically arranged inside the mounting slots, and the end of the plug-in plate slides between the two guide strips.

[0011] As a further aspect of the present invention: among the two guide bars located in the same mounting groove, the guide bar in the lower position has an integrally formed downwardly recessed curved portion. The curved portion is located at the end of the guide bar away from the feed funnel. The width of the curved portion is half the width of the guide bar and is located near the outer side of the guide bar. A roller is installed at the bottom of the filter screen. The roller is rotatably disposed on the top of the guide bar and the roller and the curved portion are in the same vertical plane.

[0012] As a further aspect of the present invention: in two adjacent material feeding units, positioning grooves are provided on both sides of the top surface of the lower material blocking frame, and the positioning strip slides in the positioning groove and is fixedly connected to the plug-in plate.

[0013] As a further aspect of the present invention: a cover plate is provided inside the cleaning pool and near the top, and a baffle frame at the top edge slides in conjunction with the cover plate.

[0014] As a further embodiment of the present invention: an opening is provided on one side of the top of the cover plate, and a flexible hose is fixedly provided at the top of the opening, and the output end of the feed funnel is connected to the flexible hose.

[0015] As a further aspect of the present invention: a sealing plate is slidably fitted at the cleaning pool, and the sealing plate is at the opening. After a material is discharged once, the cylinder installed on the cleaning pool can drive the sealing plate to close the opening.

[0016] As a further aspect of the present invention, the lengths of the multiple sets of guide strips gradually increase from bottom to top.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the cooperation of the positioning strip and the positioning groove can enable multiple material distribution units to be laid out on the horizontal plane, so that each material distribution unit can correspond to multiple receiving chambers in the washing tank. Specifically, when the material distribution unit moves to the vicinity of the bend, the roller at the bottom of the filter screen can slide into the bend, thereby causing the end of the filter screen near the roller to deflect downward, so that the residue in the material distribution unit can fall into the corresponding receiving chamber. Depending on the size of the residue, the reaction time in each receiving chamber will also be different, thereby enabling targeted treatment of the residue. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the opening and hose structure of the present invention;

[0021] Figure 3 This is a diagram showing the distribution of the partitions in this invention;

[0022] Figure 4 This is a schematic diagram of the guide bar and the curved part structure of the present invention;

[0023] Figure 5 This is a diagram showing the distribution of guide strips in this invention;

[0024] Figure 6 This is a schematic diagram of the positioning strip structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection plate and guide strip of the present invention.

[0026] Figure 8 This is a schematic diagram showing the position of the detection unit relative to the dispensing unit of the present invention;

[0027] Figure 9 This is the present invention. Figure 8 A magnified structural diagram at point A;

[0028] Figure 10 This is a schematic diagram of the filter structure of the present invention;

[0029] Figure 11 This is a schematic diagram of the material retaining frame and cover plate of the present invention.

[0030] In the diagram: 1. Cleaning tank; 101. Feed hopper; 1011. Hose; 102. Stirring shaft; 2. Drive motor; 3. Sealing plate; 4. Cover plate; 401. Opening; 402. Strip groove; 5. Traction rope; 6. Material retaining frame; 601. Positioning groove; 602. Locking block; 7. Connecting plate; 701. Positioning strip; 8. Partition plate; 9. Filter screen; 10. Guide strip; 1001. Bending part; 11. Roller; 12. Detection unit; 13. Electromagnet; 14. Light receiver. Detailed Implementation

[0031] like Figures 1-10 As shown, a recycling device for high-purity rare earth metals based on waste residue includes a washing tank 1 and a feeding funnel 101 fixed to one side of the top of the washing tank 1. In use, the waste residue is transported to the feeding funnel 101 by a conveyor, so that the waste residue can fall into the washing tank 1 through the feeding funnel 101, and then the rare earth metals on the residue are dissolved by the acidic solution in the washing tank 1.

[0032] In the specific processing, the required dissolution time will vary depending on the size of the residue. Therefore, this solution provides a material distribution component inside the washing tank 1 and near the bottom of the feed funnel 101. In addition, multiple baffles 8 are fixedly installed inside the washing tank 1. The baffles 8 help to divide the inner cavity of the washing tank 1 into multiple receiving chambers. The material distribution component is located at the top of the baffles 8. The material distribution component can distribute residues of different particle sizes to different receiving chambers for processing.

[0033] Reference Figures 1-5 As shown, the material distribution assembly includes multiple material distribution units stacked vertically. Specifically, each material distribution unit includes a U-shaped baffle frame 6 and a U-shaped plug-in plate 7 fixed to the bottom of the baffle frame 6. Figure 4 As can be seen, both ends of the plug-in plate 7 extend out of the baffle frame 6, allowing the plug-in plate 7 to slide into the washing tank 1. Adjacent material distribution units cooperate through positioning units, ensuring that when the uppermost material distribution unit moves, it sequentially drives the lower material distribution units to move from top to bottom. Ultimately, the multiple material distribution units correspond one-to-one with the multiple receiving chambers within the washing tank 1. Figure 4 , Figure 7 As shown, two filter screens 9 are symmetrically arranged inside the plug-in plate 7, and both filter screens 9 are hinged to the plug-in plate 7. Specifically, the hinge position is on the side where the two filter screens 9 are opposite to each other. In the initial state, the two filter screens 9 are in a horizontal state, so that the residue in the baffle frame 6 can be screened. When multiple material distribution units are laid out in sequence, the filter screens 9 can be deflected downwards, so that the residue in the multiple material distribution units can fall into the corresponding receiving chamber.

[0034] To allow the filter screen 9 to deflect downwards, this design incorporates multiple mounting slots inside the cleaning tank 1, located on both sides. These mounting slots on each side are arranged vertically and correspond one-to-one with the multiple component dispensing units. Specifically, two guide strips 10 are symmetrically arranged inside each mounting slot, and the end of the aforementioned plug-in plate 7 extends between the two guide strips 10 and slides into them. Figure 4 As can be seen, the length of multiple installation slots gradually increases from bottom to top, and correspondingly, the length of multiple sets of guide strips 10 also gradually increases from bottom to top. Through this arrangement, multiple material distribution units can be laid out in sequence.

[0035] Furthermore, among the two guide bars 10 located in the same mounting groove, the guide bar 10 in the lower position has an integrally formed downwardly recessed curved portion 1001. The curved portion 1001 is located at the end of the guide bar 10 furthest from the feed funnel 101. Figure 3 As can be seen, the width of the curved portion 1001 is half the width of the guide strip 10 and it is located near the outer side of the guide strip 10. Figure 7 , Figure 10 As shown, rollers 11 are mounted on the bottom of the filter screen 9 and at both ends via brackets. The rollers 11 are rotatably mounted on the top of the guide bar 10 and are in the same vertical plane as the curved part 1001. When the plug plate 7 moves away from the feed funnel 101 so that the rollers 11 coincide with the curved part 1001, the rollers 11 can roll downward along the curved part 1001, and the filter screen 9 will deflect downward accordingly, so that the residue in the dispensing unit can fall into the corresponding receiving chamber.

[0036] Combination Figures 4-6 As shown, in two adjacent material distribution units, positioning grooves 601 are provided on both sides of the top surface of the lower material blocking frame 6. The positioning unit is a positioning strip 701 that slides in the positioning groove 601. The positioning strip 701 is fixedly connected to the plug plate 7 at its top. With this structure, when the topmost material distribution unit is pulled, multiple positioning units can be gradually spread out through the cooperation of the positioning strip 701 and the positioning groove 601.

[0037] In actual use, the residue is fed into the washing tank 1 through the feeding funnel 101 and falls into the top distribution unit. Since the filter mesh 9 on each distribution unit has a progressively smaller pore size from top to bottom, it can screen residues of different sizes. When the top distribution unit is pulled, the positioning bar 701 and the positioning groove 601 work together to make multiple distribution units spread out on the horizontal plane, so that each distribution unit can correspond to multiple receiving chambers in the washing tank 1. Specifically, when the distribution unit moves to the vicinity of the bending part 1001, the roller 11 at the bottom of the filter mesh 9 can slide into the bending part 1001, so that the end of the filter mesh 9 near the roller 11 deflects downward, so that the residue in the distribution unit can fall into the corresponding receiving chamber. Depending on the size of the residue, the reaction time in each receiving chamber will also be different, so that the residue can be treated in a targeted manner.

[0038] The above method can specifically disperse residues of different particle sizes into different receiving chambers. However, when a certain layer of the distribution unit is fully loaded, a distribution unit above it may still contain smaller-sized residues that do not fall down. Therefore, as a further extension of the above embodiment, this solution sets the filter screen 9 as follows: Figure 10 The shape shown can be specifically understood as follows: both ends of the filter 9 are configured with L-shaped connecting parts, and the aforementioned rollers 11 are installed at the connecting parts, combined with... Figure 7 , Figure 10 As shown, the filter screen 9 of this structure is positioned on top of the lower baffle frame 6 and the bottom surface of the filter screen 9 is flush with the top surface of the baffle frame 6, thereby preventing residue in the material distribution unit from overflowing into the baffle frame 6.

[0039] Furthermore, combined Figures 8-9 As shown, a detection unit 12 for detecting whether the baffle frame 6 is fully loaded is provided on the inner side wall of the baffle frame 6. Specifically, the detection unit 12 can be a photoelectric sensor or an infrared sensor. Here, a photoelectric sensor is used as an example. A light emitter can be installed on one side of the baffle frame 6 near the top, while a light receiver 14 is correspondingly provided on the other side of the baffle frame 6. When the baffle frame 6 is fully loaded or when there is still residue falling into the baffle frame 6, it can be detected by this detection unit 12. The specific structure and working principle of the detection unit 12 are mature technologies and will not be described in detail here.

[0040] A groove is provided at the top of the baffle frame 6, and an electromagnet 13 is installed at the bottom of the groove. The detection unit 12 is electrically connected to the electromagnet 13. The top of the electromagnet 13 is elastically connected to a locking block 602 by a spring. The locking block 602 is made of magnetic material, and the bottom surface of the plug-in plate 7 adjacent to the locking block 602 has a slot that cooperates with the locking block 602. In actual use, when a layer of dispensing units is full, the detection unit 12 can detect this signal and control the electromagnet 13 to be energized. The side of the electromagnet 13 opposite to the locking block 602 has the same magnetic pole, so that the locking block 602 can move upward and insert into the slot, so that the fully loaded dispensing unit can engage with the dispensing unit above it and move synchronously. As can be seen from the previous embodiment, when the topmost dispensing unit is pulled, multiple dispensing units can be laid out in sequence, thus corresponding to multiple receiving chambers. However, the situation is different when one of the dispensing units is full. Figures 4-5 Taking the full load of the second-layer dispensing unit as an example, when the second-layer dispensing unit is full, the detection unit 12 on the second-layer dispensing unit can control the locking block 602 to cooperate with the locking slot, so that the second-layer dispensing unit is locked with the first-layer dispensing unit. As a result, the second-layer dispensing unit can be moved synchronously when the first-layer dispensing unit is pulled. When the second-layer dispensing unit moves to the bending part 1001, the filter screen 9 on the second-layer dispensing unit can be deflected downward, so that the residue in the second-layer dispensing unit can fall into the corresponding receiving chamber. At the same time, as the residue in the second-layer dispensing unit is discharged, the small-sized residue in the first-layer dispensing unit can pass through the filter screen 9 in the first-layer dispensing unit and fall into the receiving chamber. Therefore, this method can maximize the dispersion of residues of different sizes, thereby shortening the overall processing time of the residue.

[0041] Reference Figure 2 As shown, a cover plate 4 is also provided inside the cleaning tank 1 and near the top. A baffle frame 6 at the top is slidably engaged with the cover plate 4. Specifically, an avoidance groove that cooperates with the cover plate 4 can be opened on the inner wall of the cleaning tank 1. The avoidance groove is "U" shaped, so that the cover plate 4 can move relative to the cleaning tank 1 but not detach from the cleaning tank 1. In actual use, a limiting spring can be connected between the groove wall of the avoidance groove and the cover plate 4, so that the cover plate 4 and the cleaning tank 1 are elastically engaged. An opening 401 is provided on one side of the top of the cover plate 4, and a hose 1011 is fixedly installed on the top of the opening 401. The output end of the feed funnel 101 is connected to the hose 1011, so that the residue in the feed funnel 101 can fall into the distribution unit through the opening 401.

[0042] Furthermore, in combination Figure 11As shown, protrusions (not shown) are fixedly installed on both sides of the top surface of the top baffle frame 6. The bottom surface of the cover plate 4 can be provided with a strip groove 402 that slides with the protrusions. The cross-section of the protrusions and the strip groove 402 are both T-shaped structures. In actual use, a vibration motor is installed on the top of the cover plate 4 to drive multiple material distribution units to vibrate, so that the residue can be evenly distributed into each material distribution unit. Similarly, the cover plate 4 can also be in a vibrating state during the process of laying the material distribution units.

[0043] In order to cooperate with the vibration of the material distribution unit, the guide strip 10 can be elastically engaged with the cleaning tank 1. Specifically, a spring is fixedly installed between the side of the two guide strips 10 that are opposite to each other and the inner wall of the mounting groove, so that the guide strip 10 is elastically connected to the cleaning tank 1 in the vertical direction.

[0044] Combination Figures 1-2 As shown, in order to move the material distribution unit, this solution has a drive motor 2 installed at both ends of the washing tank 1. The output end of the drive motor 2 is connected to a winding wheel, and traction ropes 5 are fixedly installed on both sides of the top baffle frame 6. The end of the traction rope 5 away from the baffle frame 6 passes through the washing tank 1 and is fixedly connected to the winding wheel. In use, the drive motor 2 can wind up the traction rope 5 on one side of the baffle frame 6 by rotating in the forward direction. Similarly, when the drive motor 2 rotates in the reverse direction, it can wind up the traction rope 5 on the other side of the baffle frame 6, thereby driving the baffle frame 6 to move left and right in the horizontal plane. When each material distribution unit moves to the corresponding receiving chamber, the drive motor 2 can pause for a period of time, thereby providing sufficient time for the residue to be discharged.

[0045] Recombined Figure 1 As shown, a sealing plate 3 is slidably fitted at the cleaning tank 1. The sealing plate 3 is L-shaped and is located at the opening 401. After one feeding is completed, the cylinder installed on the cleaning tank 1 can drive the sealing plate 3 to move into the cleaning tank 1, thereby closing the opening 401 and preventing further feeding.

[0046] The cleaning tank 1 is equipped with a stirring shaft 102, which passes through the cleaning tank 1 and the partition 8 inside the cleaning tank 1 and rotates with both through a sealed bearing. The stirring shaft 102 is equipped with stirring blades on its outer side to stir the solution in each containing chamber. Of course, each containing chamber of the cleaning tank 1 is connected to an inlet pipe and an outlet pipe, and the outlet pipe needs to be equipped with a component for filtering the dissolved impurities.

Claims

1. A recycling device for high-purity rare earth metals based on waste residue, comprising a washing tank and a feed funnel fixed to one side of the top of the washing tank, characterized in that: A material distribution component is provided inside the cleaning tank and near the bottom of the feed funnel. Multiple partitions are fixedly installed inside the cleaning tank, which can divide the inner cavity of the cleaning tank into multiple receiving chambers. The material distribution assembly includes multiple material distribution units arranged in the vertical direction. Each material distribution unit includes a baffle frame and a plug plate fixed to the bottom of the baffle frame. The two ends of the plug plate are slidably engaged with the washing tank. Adjacent material distribution units are engaged with each other by positioning strips, so that when one material distribution unit moves, it can drive multiple material distribution units below to be laid out and correspond one-to-one with the receiving chamber. Two filter screens are symmetrically arranged on the inner side of the plug-in plate, and both filter screens are hinged to the plug-in plate. When multiple material distribution units are laid out in sequence and correspond to the receiving chamber, the filter screens can be deflected downwards, and the pore size of the filter screens on each material distribution unit decreases from top to bottom. Multiple mounting slots are provided inside the cleaning tank and on both sides. The multiple mounting slots are arranged in sequence in the vertical direction and correspond one-to-one with multiple batching units. Two guide strips are symmetrically arranged inside the mounting slots. The end of the plug-in plate slides between the two guide strips. The length of the multiple sets of guide strips gradually increases from bottom to top. Among the two guide bars located in the same mounting slot, the guide bar in the lower position has an integrally formed downwardly recessed curved part. The curved part is located at the end of the guide bar away from the feed funnel. The width of the curved part is half the width of the guide bar and is located near the outer side of the guide bar. A roller is installed at the bottom of the filter screen. The roller is rolled on the top of the guide bar and the roller and the curved part are in the same vertical plane. In two adjacent material feeding units, positioning grooves are provided on both sides of the top surface of the lower material blocking frame. The positioning strip slides in the positioning groove and is fixedly connected to the plug-in plate.

2. The recycling equipment for high-purity rare earth metals based on waste residue according to claim 1, characterized in that: A cover plate is installed inside the cleaning tank near the top, and a baffle frame at the top slides in conjunction with the cover plate.

3. The recycling equipment for high-purity rare earth metals based on waste residue according to claim 2, characterized in that: An opening is provided on one side of the top of the cover plate, and a flexible hose is fixedly installed at the top of the opening. The output end of the feed funnel is connected to the flexible hose.

4. The recycling equipment for high-purity rare earth metals based on waste residue according to claim 3, characterized in that: A sealing plate is slidably fitted into the cleaning tank, and the sealing plate is at the opening. After a material is discharged once, the cylinder installed on the cleaning tank can drive the sealing plate to close the opening.

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