Waste lithium iron phosphate pole piece recovery device

Abstract

The utility model relates to a waste lithium iron phosphate pole piece recovery device which comprises a recovery tank, a crushing assembly, a conveying assembly and an ultrasonic separation assembly, and the recovery tank is hollow and is suitable for accommodating a cleaning solvent and crushed lithium iron phosphate pole pieces; the crushing assembly is arranged on the recovery tank and is suitable for crushing the lithium iron phosphate pole piece; the conveying assembly is arranged on the recycling tank and is suitable for conveying the lithium iron phosphate pole piece to the crushing assembly for crushing and conveying the lithium iron phosphate pole piece crushed by the crushing assembly into the recycling tank; the ultrasonic separation assembly is arranged on the recovery tank and is suitable for carrying out ultrasonic separation on the lithium iron phosphate pole piece in the recovery tank, and the powder and the lithium iron phosphate pole piece can be separated more thoroughly and more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of battery recycling, in particular to a device for recycling waste lithium iron phosphate pole pieces. Background Art

[0002] Lithium iron phosphate battery is a lithium-ion battery that has attracted widespread attention for its relative safety, stability and long life, especially in some fields with high requirements for battery safety performance. When lithium iron phosphate batteries are discarded, the positive electrode plates of the lithium iron phosphate batteries are generally recovered and recycled for reuse, usually by direct crushing for physical recycling.

[0003] The Chinese patent with announcement number CN220071847U discloses a waste lithium iron phosphate electrode recovery device, including a base and a crushing tank, wherein two groups of support plates are fixedly connected to the top of the base, and the inner walls of the two groups of support plates are rotatably connected to the rotating tubes, and the crushing tank is fixedly connected between the two groups of rotating tubes, and the two groups of rotating tubes are connected to the crushing tank, one side of one group of support plates is fixedly connected to an air pump and a rotating joint, and the rotating joint is connected to a group of rotating tubes, the air inlet end of the air pump is connected to the rotating joint, and one end of one group of rotating tubes is fixedly connected to a filter plate, and the filter plate is located inside the crushing tank; while the electrode is crushed by the crushing tank, the rotating motor drives the transmission gear to engage with the outer gear ring, so that the outer gear ring drives the crushing tank to rotate, and the crushed electrode inside the crushing tank is flipped and crushed, thereby improving the crushing effect, and at the same time, the air pump extracts the crushed black powder through the rotating joint and the rotating tube, thereby improving the convenience of separation.

[0004] The above-mentioned existing technical solutions have the following defects: although the waste lithium iron phosphate electrodes can be crushed, there will still be powder on the surface of the crushed electrodes, and the electrodes and the separated powder are mixed together, and the separation is not complete. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a waste lithium iron phosphate electrode recovery device with good separation effect, so as to solve the technical problem in the prior art that the electrode and the separated powder are mixed together and the separation is not complete.

[0006] The utility model provides a waste lithium iron phosphate electrode recovery device, comprising:

[0007] Recovery tank, hollow, suitable for accommodating cleaning solvent and crushed lithium iron phosphate electrodes;

[0008] A crushing assembly, provided on the recovery tank, suitable for crushing the lithium iron phosphate pole pieces;

[0009] A conveying assembly, provided on the recovery tank, adapted to convey the lithium iron phosphate electrode pieces to the crushing assembly for crushing and convey the lithium iron phosphate electrode pieces crushed by the crushing assembly into the recovery tank;

[0010] The ultrasonic separation component is arranged on the recovery tank and is suitable for ultrasonically separating the lithium iron phosphate pole pieces in the recovery tank.

[0011] Optionally, the ultrasonic separation component includes:

[0012] an ultrasonic transducer, disposed on the inner wall of the recovery tank and adapted to transmit ultrasonic waves into the cleaning solvent;

[0013] The ultrasonic generator is arranged on the recovery tank and is electrically connected to the ultrasonic transducer.

[0014] Optionally, the ultrasonic separation component further includes a liquid inlet pipe and a liquid outlet pipe, wherein:

[0015] The liquid inlet pipe is arranged on the recovery tank and is in communication with the recovery tank, and is suitable for conveying unused cleaning solvent into the recovery tank;

[0016] The liquid outlet pipe is arranged on the recovery tank and is communicated with the recovery tank, and is suitable for discharging the used cleaning solvent from the recovery tank.

[0017] Optionally, it also includes a screen and a sealing cover, wherein,

[0018] The screen is slidably arranged in the recovery tank, and the crushed lithium iron phosphate electrode in the recovery tank is placed on the screen;

[0019] The recovery tank is provided with an opening, and the sealing cover is arranged at the opening. The sealing cover is detachably connected to the recovery tank and seals the opening.

[0020] Optionally, it also includes:

[0021] a traction rope, one end of which is connected to the screen;

[0022] A reel is rotatably connected to the recovery tank, and one end of the traction rope away from the screen is connected to the reel;

[0023] The first driving member is adapted to drive the reel shaft to rotate, thereby driving the reeling or unreeling of the traction rope.

[0024] Optionally, a stirring component is further included, which is arranged in the recovery tank and is suitable for stirring the cleaning solvent in the recovery tank.

[0025] Optionally, the stirring assembly includes:

[0026] A rotating shaft, rotatably connected in the recovery tank;

[0027] a stirring blade connected to the outer wall of the rotating shaft and immersed in the cleaning solvent;

[0028] The second driving member is arranged in the recovery tank and is suitable for driving the rotating shaft to rotate.

[0029] Optionally, the crushing assembly includes:

[0030] A crushing box is provided on the outer wall of the recovery tank, is hollow inside, has an opening at one end, and is connected to the recovery tank at the other end; the conveying assembly is provided in the crushing box and extends toward the connection between the crushing box and the recovery tank;

[0031] At least one impact member is provided and is slidably disposed in the crushing box, the impact member having a first state and a second state. When the impact member is in the first state, the impact member contacts the lithium iron phosphate electrode on the conveying assembly and impacts the lithium iron phosphate electrode. When the impact member is in the second state, the impact member and the lithium iron phosphate electrode on the conveying assembly are separated.

[0032] The third driving member is disposed in the crushing box and drives the impact member to switch back and forth between the first state and the second state.

[0033] Optionally, the impact member includes:

[0034] A sliding rod, slidably arranged in the crushing box;

[0035] An impact ball is connected to the end of the sliding rod facing the conveying assembly and is suitable for contacting the lithium iron phosphate electrode on the conveying assembly to impact the lithium iron phosphate electrode;

[0036] A pushing plate is connected to the end of the sliding rod facing away from the impact ball.

[0037] Optionally, a placement cavity is provided in the crushing box, and the placement cavity is located above the conveying assembly, and the third driving member includes:

[0038] A driving rod is slidably disposed in the placement cavity;

[0039] an extrusion plate connected to the driving rod;

[0040] an electric push rod, disposed in the crushing box, driving the driving rod to move until the extrusion plate squeezes the push plate, causing the impact member to switch from the second state to the first state, or driving the driving rod to move so that the extrusion plate and the push plate are separated;

[0041] An elastic member is provided on the side of the push plate facing the conveying assembly and abuts against the inner wall of the crushing box. When the extrusion plate squeezes the push plate, the elastic member is compressed. When the extrusion plate and the push plate are separated, the compressed elastic member drives the push plate to recover, so that the impact member switches from the first state to the second state.

[0042] The technical solution of the utility model has the following advantages:

[0043] 1. The waste lithium iron phosphate electrode recovery device provided by the utility model first transports the lithium iron phosphate electrode to be crushed to the crushing component through the conveying component, crushes the lithium iron phosphate electrode under the action of the crushing component, and then transports the crushed lithium iron phosphate electrode to the recovery tank under the action of the conveying component. When the number of crushed lithium iron phosphate electrode in the recovery tank reaches a certain amount, the ultrasonic separation component is started. At this time, the ultrasonic separation component generates ultrasonic waves. The ultrasonic waves use the impact force generated by cavitation to peel off the powder on the outer wall of the crushed lithium iron phosphate electrode. The peeled powder will fall to the bottom of the recovery tank, making the separation of the powder and the lithium iron phosphate electrode more thorough and more convenient.

[0044] 2. The waste lithium iron phosphate electrode recovery device provided by the utility model is provided with a stirring component. When the crushed lithium iron phosphate electrode in the recovery tank is ultrasonically separated, the stirring component is started at this time to stir the cleaning solvent, thereby driving the cleaning solvent to flow. The flowing cleaning solvent will accelerate the peeling speed of the powder on the outer wall of the lithium iron phosphate electrode. The powder on the outer wall of the lithium iron phosphate electrode can be quickly peeled off from the lithium iron phosphate electrode without damaging the structure of the lithium iron phosphate electrode itself, so that the powder and the lithium iron phosphate electrode will not be mixed together. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 This is a three-dimensional structural diagram of the waste lithium iron phosphate electrode recovery device of the utility model;

[0047] Figure 2 This is a cross-sectional view of the internal structure of the waste lithium iron phosphate electrode recovery device in the present invention;

[0048] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0049] Figure 4 for Figure 2 Enlarged view of part B in the middle.

[0050] Description of reference numerals:

[0051] 1. Recovery tank; 2. Crushing assembly; 21. Crushing box; 22. Impact member; 221. Sliding rod; 222. Impact ball; 223. Push plate; 23. Third driving member; 231. Driving rod; 232. Extrusion plate; 233. Electric push rod; 234. Elastic member; 3. Conveying assembly; 31. Conveyor belt; 4. Ultrasonic separation assembly; 41. Ultrasonic transducer; 42. Ultrasonic generator; 43. Liquid inlet pipe; 44. Liquid outlet pipe; 5. Screen; 6. Sealing cover; 7. Traction rope; 8. Reel; 9. First driving member; 10. Stirring assembly; 101. Rotating shaft; 102. Stirring blade; 103. Second driving member; 11. Placement chamber; 12. Groove; 13. Controller; 14. Power plug; 15. Sealing pad; 16. Sealing ring; 17. Bracket; 18. Guide plate. DETAILED DESCRIPTION

[0052] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the description of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0053] Unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0054] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the utility model.

[0055] The terms "first," "second," "third," etc. are merely used to distinguish elements of similar nature and do not indicate or imply relative importance or a particular order.

[0056] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0057] Example

[0058] Reference Figure 1-Figure 4 As shown, the utility model provides a waste lithium iron phosphate electrode recovery device, including a recovery tank 1, a crushing component 2, a conveying component 3 and an ultrasonic separation component 4, wherein the recovery tank 1 is arranged in a can shape and a bracket 17 is provided at the bottom to support the recovery tank 1, the recovery tank 1 is hollow, and the recovery tank 1 is suitable for accommodating a cleaning solvent and crushed lithium iron phosphate electrodes; the crushing component 2 is arranged on the outer wall of the recovery tank 1 and is connected to the recovery tank 1, and is suitable for crushing the lithium iron phosphate electrodes. The conveying component 3 is also arranged on the outer wall of the recovery tank 1, and is suitable for conveying the lithium iron phosphate electrodes to the crushing component 2 for crushing, and conveying the lithium iron phosphate electrodes crushed by the crushing component 2 into the recovery tank 1. The lithium iron phosphate electrodes located in the recovery tank 1 are mounted in the recovery tank 1, and the ultrasonic separation component 4 is arranged on the recovery tank 1, and is suitable for ultrasonic separation of the lithium iron phosphate electrodes in the recovery tank 1.

[0059] During use, the lithium iron phosphate electrode to be crushed is first transported to the crushing component 2 through the conveying component 3. Under the action of the crushing component 2, the lithium iron phosphate electrode is crushed. The crushed lithium iron phosphate electrode is then transported to the recovery tank 1 under the action of the conveying component 3. When the crushed lithium iron phosphate electrode in the recovery tank 1 reaches a certain number, the ultrasonic separation component 4 is started. At this time, the ultrasonic separation component 4 will generate ultrasonic waves. The ultrasonic waves use the impact force generated by cavitation to peel off the powder on the outer wall of the crushed lithium iron phosphate electrode. The peeled powder will fall to the bottom of the recovery tank 1, making the separation of the powder and the lithium iron phosphate electrode more thorough and more convenient.

[0060] As a specific implementation method, refer to Figure 1 and Figure 2As shown, the ultrasonic separation component 4 includes an ultrasonic transducer 41 and an ultrasonic generator 42. When the crushed lithium iron phosphate electrode is fed into the recovery tank 1, it will be immersed in the cleaning solvent. The ultrasonic transducer 41 is fixedly connected to the inner wall of the recovery tank 1. The number of ultrasonic transducers 41 is not limited to one or more. When the ultrasonic transducers 41 are set to multiple, the multiple ultrasonic transducers 41 are evenly arranged on the inner wall of the lower half of the recovery tank 1. The ultrasonic generator 42 is fixedly connected to the top of the outer wall of the recovery tank 1. The ultrasonic generator 42 and the ultrasonic transducer 41 are electrically connected. Specifically, the ultrasonic generator 42 and the ultrasonic transducer 41 are connected by a wire. The ultrasonic generator 42 can convert electrical energy into a high-frequency AC signal that matches the ultrasonic transducer 41. The ultrasonic transducer 41 converts the high-frequency AC signal into an ultrasonic wave and emits it, and transmits the ultrasonic wave to the cleaning solvent. The ultrasonic wave uses the impact force generated by cavitation to clean the lithium iron phosphate electrode soaked in the cleaning solvent, so that the powder on the outer wall of the lithium iron phosphate electrode is peeled off.

[0061] In order to be able to deliver the cleaning solvent into the recovery tank 1 and discharge the cleaning solvent that has cleaned the lithium iron phosphate electrode, the ultrasonic separation component 4 also includes an inlet pipe 43 and a liquid outlet pipe 44, wherein the inlet pipe 43 is fixedly connected to the center of the top wall of the outer wall of the recovery tank 1 and one end is connected to the recovery tank 1, so that unused cleaning solvent can be delivered to the recovery tank 1, and the outlet pipe 44 is fixedly connected to the bottom of the outer wall of the recovery tank 1 and one end is connected to the recovery tank 1, so that the used cleaning solvent can be discharged from the recovery tank 1. Valves are provided on the inlet pipe 43 and the outlet pipe 44 to control the opening and closing of the inlet pipe 43 and the outlet pipe 44.

[0062] As a specific implementation method, refer to Figure 2 As shown, the waste lithium iron phosphate electrode recovery device also includes a screen 5 arranged in parallel in the recovery tank 1. The screen 5 is slid up and down in the recovery tank 1 and a sealing ring 16 is fixedly connected to the side wall of the screen 5. The sealing ring 16 is fitted with the inner wall of the recovery tank 1. The crushed lithium iron phosphate electrode in the recovery tank 1 is placed on the top of the screen 5, and the lithium iron phosphate electrode is set up through the screen 5. When the ultrasonic separation component 4 is started, the powder on the outer wall of the lithium iron phosphate electrode is peeled off by ultrasonic waves, and the peeled powder passes through the screen 5 and falls into the bottom of the recovery tank 1.

[0063] In order to be able to take out the lithium iron phosphate electrode with separated powder, an opening is opened on the recovery tank 1, and a sealing cover 6 is provided at the opening. The sealing cover 6 is detachably connected to the recovery tank 1 and seals the opening. Specifically, the sealing cover 6 is installed on the recovery tank 1 by bolts, and the opening and the sealing cover 6 need to be set in the upper half of the recovery tank 1, and the cleaning solvent is located in the lower half of the recovery tank 1, so that the cleaning solvent will not flow out from the opening, making it convenient for the staff to take out the lithium iron phosphate electrode with separated powder placed on the screen 5 from the opening, and the outer wall of the sealing cover 6 is fixedly connected to the sealing gasket 15, and the sealing gasket 15 is tightly attached to the outer wall of the recovery tank 1 to seal the opening on the recovery tank 1.

[0064] As another embodiment, referring to Figure 2 and Figure 4 As shown, in order to enable the screen 5 to slide up and down in the recovery tank 1, the recovery device also includes a traction rope 7, a reel 8 and a first driving member 9, wherein the traction rope 7 is made of flexible material, the traction rope 7 is arranged above the screen 5, and one end of the traction rope 7 is fixedly connected to the screen 5, and the other end extends upward, the reel 8 is arranged above the screen 5, the reel 8 is arranged in parallel and rotatably connected to the recovery tank 1, and the end of the traction rope 7 away from the screen 5 is fixedly connected to the reel 8; the first driving member 9 is fixed on the recovery tank 1, and the driving end of the first driving member 9 is fixedly connected to the end of the reel 8 facing away from the traction rope 7, and the driving end of the first driving member 9 is fixedly connected to the reel The shaft 8 is coaxially arranged. When the first driving member 9 is started, the first driving member 9 can drive the winding shaft 8 to rotate, thereby winding the traction rope 7 and driving the screen 5 to move upward until the screen 5 moves to the sealing cover 6, so that the staff can remove the lithium iron phosphate electrode from the sealing cover 6, or drive the winding shaft 8 to rotate in the opposite direction, thereby unwinding the traction rope 7 and driving the screen 5 to move downward until all the lithium iron phosphate electrodes on the screen 5 are immersed in the cleaning solvent; among them, for the first driving member 9, it can be set to a servo motor in this embodiment. Of course, it is not limited to the use of a servo motor, and other driving structures that can drive the winding shaft 8 to rotate can also be used.

[0065] As another embodiment, a stirring component 10 is further provided in the recovery tank 1. The stirring component 10 is suitable for stirring the cleaning solvent in the recovery tank 1. Specifically, the stirring component 10 is provided below the screen 5 and immersed in the cleaning solvent. When the stirring component 10 is started, the stirring component 10 can drive the cleaning solvent to flow; by setting the stirring component 10, when the crushed lithium iron phosphate electrode in the recovery tank 1 is subjected to ultrasonic separation, the stirring component 10 is started at this time, which can stir the cleaning solvent, thereby driving the cleaning solvent to flow. The flowing cleaning solvent will accelerate the peeling speed of the powder on the outer wall of the lithium iron phosphate electrode, and can quickly peel the powder on the outer wall of the lithium iron phosphate electrode from the lithium iron phosphate electrode without damaging the structure of the lithium iron phosphate electrode itself, so that the powder and the lithium iron phosphate electrode will not be mixed together, thereby improving the separation efficiency.

[0066] In this embodiment, the stirring assembly 10 includes a rotating shaft 101, a stirring blade 102 and a second driving member 103, wherein the rotating shaft 101 is rotatably arranged in the recovery tank 1, and the rotating shaft 101 is vertically arranged and arranged below the screen 5, and the stirring blade 102 is fixedly connected to the outer wall of the rotating shaft 101. The stirring blade 102 can be provided with multiple layers, and the multiple layers of stirring blades 102 are evenly arranged along the length direction of the rotating shaft 101; the second driving member 103 can be provided as a driving motor, and the second driving member 103 is fixedly provided at the bottom of the recovery tank 1, and the driving end of the second driving member 103 is fixedly connected to the bottom end of the rotating shaft 101 and the driving end of the second driving member 103 is coaxially arranged with the rotating shaft 101. When the second driving member 103 is started, the second driving member 103 can drive the rotating shaft 101 to rotate, thereby driving the stirring blade 102 to rotate, and then driving the cleaning solvent to flow.

[0067] As a specific implementation method, refer to Figure 2 and Figure 3 As shown, one or more crushing assemblies 2 may be provided. In the present embodiment, two crushing assemblies 2 are provided, wherein the crushing assemblies 2 include a crushing box 21, an impact member 22 and a third driving member 23, wherein the crushing box 21 is provided on the outer wall of the recovery tank 1, the interior of the crushing box 21 is hollow, and one end of the crushing box 21 is provided with an opening communicating with the interior thereof, and the other end extends toward the recovery box until it is fixedly connected to the recovery tank 1, the interior of the crushing box 21 is communicated with the interior of the recovery tank 1 through the connection with the recovery tank 1, the conveying assembly 3 is provided in the crushing box 21 and one end extends toward the connection between the crushing box 21 and the recovery tank 1, and the other end extends toward the opening of the crushing box 21 until it extends out of the opening of the crushing box 21;

[0068] In this embodiment, the conveying assembly 3 can be directly configured as a conveyor belt 31. The lithium iron phosphate electrode sheet is directly placed above the end of the conveying assembly 3 extending from the opening of the crushing box 21, and the conveying assembly 3 is started. At this time, the conveying assembly 3 can convey the lithium iron phosphate electrode sheet to the crushing box 21 to be crushed by the impact member 22. The conveying assembly 3 can also convey the crushed lithium iron phosphate electrode sheet from the connection between the crushing box 21 and the recovery tank 1 into the recovery tank 1 for ultrasonic treatment.

[0069] At least one impact member 22 is provided and is slidably arranged in the crushing box 21. The impact members 22 are all located above the conveying component 3. When multiple impact members 22 are provided, the multiple impact members 22 are evenly arranged along the length direction of the crushing box 21; the impact member 22 has a first state and a second state. When the impact member 22 is in the first state, the impact member 22 contacts the lithium iron phosphate electrode on the conveying component 3 and hits the lithium iron phosphate electrode. When the impact member 22 is in the second state, the impact member 22 is separated from the lithium iron phosphate electrode on the conveying component 3; the third driving member 23 is provided in the crushing box 21, and the third driving member can drive the impact member 22 to switch back and forth between the first state and the second state.

[0070] Specifically, the impact member 22 includes a sliding rod 221, an impact ball 222 and a push plate 223, wherein the sliding rod 221 is vertically arranged and slidably arranged in the crushing box 21, and the sliding rod 221 is located above the conveying component 3, and the impact ball 222 is fixedly connected to the end of the sliding rod 221 facing the conveying component 3, and the impact ball 222 is used to contact the lithium iron phosphate electrode on the conveying component 3 and impact the lithium iron phosphate electrode, thereby generating cracks inside the powder on the outer wall of the lithium iron phosphate electrode and crushing the lithium iron phosphate electrode. The push plate 223 is fixedly connected to the end of the sliding rod 221 facing away from the impact ball 222;

[0071] In order to facilitate the placement of the third driving member 23, a placement chamber 11 is further provided inside the crushing box 21. The placement chamber 11 is located above the conveying assembly 3, and one end of the sliding rod 221 having a pushing plate 223 extends into the placement chamber 11. The third driving member 23 includes a driving rod 231, an extrusion plate 232, an electric push rod 233 and an elastic member 234, wherein the driving rod 231 is horizontally slidably arranged in the placement chamber 11, and the driving rod 231 extends along the arrangement direction of the multiple impact members 22. The driving rod 231 is located above the pushing plate 223, and the extrusion plate 232 is fixedly connected to the side of the driving rod 231 facing the pushing plate 223. The number of the extrusion plates 232 is the same as that of the pushing plates 223, and the extrusion plates 232 and the pushing plates 223 are arranged one-to-one;

[0072] The electric push rod 233 is fixedly connected to the crushing box 21, and the movable end of the electric push rod 233 is fixedly connected to one end of the driving rod 231. When the electric push rod 233 is started, it can push the driving rod 231 to move back and forth. Specifically, the electric push rod 233 can drive the driving rod 231 to move until the squeezing plate 232 squeezes the pushing plate 223, so that the impact member 22 switches from the second state to the first state, or drives the driving rod 231 to move so that the squeezing plate 232 and the pushing plate 223 are separated.

[0073] The elastic member 234 is arranged on the side of the push plate 223 facing the conveying assembly 3 and abuts against the inner wall of the crushing box 21, and the elastic member 234 is arranged vertically. In this embodiment, the elastic member 234 is arranged as a reset spring. In order to place the elastic member 234, a groove 12 is provided on the inner wall of the crushing box 21 on the side of the placement cavity 11 facing the conveying assembly 3. The elastic member 234 is located in the groove 12, and the push plate 223 is telescopically arranged in the groove 12. One end of the sliding rod 221 is located in the groove 12, and the other end extends from the bottom wall of the groove 12 into another space of the crushing box 21 having the conveying assembly 3, and can be moved at the bottom wall of the groove 12. It slides up and down inside, one end of the elastic member 234 is fixedly connected to the bottom wall of the push plate 223, and the other end is fixedly connected to the bottom wall of the groove 12. When the extrusion plate 232 squeezes the push plate 223, the push plate 223 will move to the bottom of the groove 12, the elastic member 234 is compressed, and the sliding rod 221 moves toward the conveying component 3. The impact member 22 switches from the second state to the first state, and the impact ball 222 collides with the lithium iron phosphate electrode on the conveying component 3; when the extrusion plate 232 and the push plate 223 are disengaged, the compressed elastic member 234 will drive the push plate 223 to move upward and restore its original state, so that the impact member 22 switches from the first state to the second state.

[0074] As a specific implementation method, refer to Figure 2 As shown, in order to allow the lithium iron phosphate electrode to fall smoothly onto the screen 5, a guide plate 18 is fixedly connected to the recovery tank 1, and the guide plate 18 is located below the crushing box 21. The guide plate 18 is tilted from top to bottom toward the axis of the recovery tank 1. When the lithium iron phosphate electrode is transported into the recovery tank 1 by the conveying component 3, it will first fall on the inclined wall of the guide plate 18 and slide down again along the inclined wall to the top of the screen 5; a power plug 14 and a controller 13 are also fixedly connected to the outer wall of the recovery tank 1, wherein the power plug 14 and the controller 13 are electrically connected, and the ultrasonic generator 42, the first drive member 9, the second drive member 103, the conveyor belt 31 and the electric push rod 233 are all electrically connected to the controller 13.

[0075] When in use, the waste lithium iron phosphate electrode is placed on the top of the conveying component 3, the controller 13 starts the conveying component 3 and the electric push rod 233, the conveying component 3 drives the lithium iron phosphate electrode to move into the crushing box 21, the electric push rod 233 can drive the driving rod 231 to slide left and right, when the driving rod 231 moves to the left, the driving rod 231 drives the squeezing plate 232 to squeeze the pushing plate 223, and the pushing plate 223 is squeezed and drives the sliding rod 221 to move downward, and the sliding rod 221 moving downward drives the impact ball 222 to descend, and the descending impact ball 222 hits the lithium iron phosphate. When the driving rod 231 moves to the right, the driving rod 231 drives the extrusion plate 232 to move to the right. The extrusion plate 232 moving to the right no longer squeezes the push plate 223. The elastic member 234 drives the push plate 223 and the sliding rod 221 to move upward. The sliding rod 221 drives the impact ball 222 to move upward. The impact ball 222 breaks away from the lithium iron phosphate electrode. The driving rod 231 sliding left and right drives the sliding rod 221 and the impact ball 222 through the extrusion plate 232 and the push plate 223 to continuously impact the lithium iron phosphate electrode on the conveyor belt 31, so that cracks are generated inside the powder on the outer wall of the electrode.

[0076] After the lithium iron phosphate electrode is sent into the recovery tank 1 by the conveying component 3, it will first fall on the inclined wall of the guide plate 18, and slide down again along the inclined wall to the top of the screen 5, and inject the cleaning solvent into the recovery tank 1 through the liquid inlet pipe 43, so that the cleaning solvent does not pass through the lithium iron phosphate electrode on the screen 5. The controller 13 starts the ultrasonic generator 42, and the ultrasonic generator 42 converts electrical energy into a high-frequency AC signal that matches the ultrasonic transducer 41. The ultrasonic transducer 41 converts the high-frequency AC signal into an ultrasonic wave and emits it. The ultrasonic wave uses the impact force generated by cavitation to peel off the powder on the outer wall of the lithium iron phosphate electrode. The peeled powder passes through the screen 5 and falls into the bottom of the recovery tank 1. The controller 13 starts the second driving member 103, and the second driving member 103 drives the stirring blade 102 to rotate through the rotating shaft 101. The rotating stirring blade 102 will drive the cleaning solvent to flow, and the flowing cleaning solvent will accelerate the peeling speed of the powder on the outer wall of the lithium iron phosphate electrode;

[0077] After the powder stripping is completed, the controller 13 starts the first driving member 9, which drives the reel 8 to rotate. The rotating reel 8 retracts the traction rope 7, which drives the screen 5 to move upward. The upward moving screen 5 lifts the electrode with the powder stripped from the cleaning solvent. The sealing cover 6 is removed, and the lithium iron phosphate electrode is taken out of the recovery tank 1. The liquid outlet pipe 44 is opened, and the cleaning solvent carries the stripped powder out of the liquid outlet pipe 44.

[0078] Reinstall the sealing cover 6 into the recovery tank 1. The first driving member 9 drives the reel 8 to rotate in the opposite direction. The reverse rotating reel 8 releases the traction rope 7. The traction rope 7 no longer pulls the screen 5. The screen 5 moves downward to its original position. The lithium iron phosphate electrode is fed onto the screen 5 again, and the above steps are repeated.

[0079] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A waste lithium iron phosphate electrode recovery device, characterized in that: include: The recovery tank (1) is hollow and suitable for accommodating the cleaning solvent and the crushed lithium iron phosphate electrode; A crushing assembly (2), arranged on the recovery tank (1), is suitable for crushing the lithium iron phosphate pole pieces; A conveying assembly (3) is provided on the recovery tank (1) and is suitable for conveying the lithium iron phosphate pole pieces to the crushing assembly (2) for crushing, and conveying the lithium iron phosphate pole pieces crushed by the crushing assembly (2) into the recovery tank (1); An ultrasonic separation component (4) is arranged on the recovery tank (1) and is suitable for ultrasonically separating the lithium iron phosphate pole pieces in the recovery tank (1).

2. The waste lithium iron phosphate electrode recovery device according to claim 1, characterized in that: The ultrasonic separation component (4) comprises: an ultrasonic transducer (41), disposed on the inner wall of the recovery tank (1), adapted to transmit ultrasonic waves into the cleaning solvent; An ultrasonic generator (42) is arranged on the recovery tank (1) and is electrically connected to the ultrasonic transducer (41).

3. The waste lithium iron phosphate electrode recovery device according to claim 2, characterized in that: The ultrasonic separation component (4) further includes a liquid inlet pipe (43) and a liquid outlet pipe (44), wherein: The liquid inlet pipe (43) is arranged on the recovery tank (1) and is in communication with the recovery tank (1), and is suitable for conveying unused cleaning solvent into the recovery tank (1); The liquid outlet pipe (44) is arranged on the recovery tank (1) and is in communication with the recovery tank (1), and is suitable for discharging the used cleaning solvent from the recovery tank (1).

4. The waste lithium iron phosphate electrode recovery device according to claim 2, characterized in that: It also includes a screen (5) and a sealing cover (6), wherein: The screen (5) is slidably arranged in the recovery tank (1), and the crushed lithium iron phosphate electrode in the recovery tank (1) is placed on the screen (5); The recovery tank (1) is provided with an opening, and the sealing cover (6) is arranged at the opening. The sealing cover (6) is detachably connected to the recovery tank (1) and seals the opening.

5. The waste lithium iron phosphate electrode recovery device according to claim 4, characterized in that: Also includes: a traction rope (7), one end of which is connected to the screen (5); A reel (8) is rotatably connected to the recovery tank (1), and one end of the traction rope (7) away from the screen (5) is connected to the reel (8); The first driving member (9) is suitable for driving the reeling shaft (8) to rotate, thereby driving the reeling or unreeling of the traction rope (7).

6. The waste lithium iron phosphate electrode recovery device according to claim 2, characterized in that: It also includes a stirring component (10), which is arranged in the recovery tank (1) and is suitable for stirring the cleaning solvent in the recovery tank (1).

7. The waste lithium iron phosphate electrode recovery device according to claim 6, characterized in that: The stirring assembly (10) comprises: A rotating shaft (101) is rotatably connected to the recovery tank (1); a stirring blade (102), connected to the outer wall of the rotating shaft (101) and immersed in the cleaning solvent; The second driving member (103) is arranged in the recovery tank (1) and is suitable for driving the rotating shaft (101) to rotate.

8. The waste lithium iron phosphate electrode recovery device according to any one of claims 1 to 7, characterized in that: The crushing assembly (2) comprises: A crushing box (21) is arranged on the outer wall of the recovery tank (1), is hollow inside, has an opening at one end, and is connected to the recovery tank (1) at the other end; the conveying assembly (3) is arranged in the crushing box (21) and extends toward the connection point between the crushing box (21) and the recovery tank (1); At least one impact member (22) is provided and is slidably arranged in the crushing box (21). The impact member (22) has a first state and a second state. When the impact member (22) is in the first state, the impact member (22) contacts the lithium iron phosphate electrode on the conveying component (3) and impacts the lithium iron phosphate electrode. When the impact member (22) is in the second state, the impact member (22) and the lithium iron phosphate electrode on the conveying component (3) are separated. A third driving member (23) is arranged in the crushing box (21) and drives the impact member (22) to switch back and forth between the first state and the second state.

9. The waste lithium iron phosphate electrode recovery device according to claim 8, characterized in that: The impact member (22) comprises: A sliding rod (221) is slidably disposed in the crushing box (21); An impact ball (222) is connected to one end of the sliding rod (221) facing the conveying assembly (3), and is suitable for contacting the lithium iron phosphate electrode on the conveying assembly (3) to impact the lithium iron phosphate electrode; The pushing plate (223) is connected to the end of the sliding rod (221) facing away from the impact ball (222).

10. The waste lithium iron phosphate electrode recovery device according to claim 9, characterized in that: A placement chamber (11) is provided in the crushing box (21), and the placement chamber (11) is located above the conveying assembly (3). The third driving member (23) includes: A driving rod (231) is slidably disposed in the placement cavity (11); An extrusion plate (232) connected to the driving rod (231); An electric push rod (233) is arranged in the crushing box (21), and the electric push rod (233) drives the driving rod (231) to move until the squeezing plate (232) squeezes the pushing plate (223), so that the impact member (22) switches from the second state to the first state, or drives the driving rod (231) to move so that the squeezing plate (232) and the pushing plate (223) are separated; An elastic member (234) is arranged on a side of the pushing plate (223) facing the conveying assembly (3) and abuts against the inner wall of the crushing box (21). When the squeezing plate (232) squeezes the pushing plate (223), the elastic member (234) is compressed. When the squeezing plate (232) and the pushing plate (223) are separated, the compressed elastic member (234) drives the pushing plate (223) to recover, so that the impact member (22) switches from the first state to the second state.

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