Lithium iron phosphate reclaimed material calcining and degumming device

Abstract

The utility model discloses a lithium iron phosphate reclaimed material calcination degumming device which comprises a working box, a heating table is movably installed in the working box, a containing box is placed on the upper portion in the working box in a clamped mode, a heat insulation cover plate is installed at the top end of the working box in an inserted mode, and a heat insulation pad is filled in the heat insulation cover plate. Two motors are symmetrically installed on the upper portion of the heat insulation cover plate left and right, the output end of each motor is provided with a stirring disc in a key connection mode, and a plurality of triangular stirring blocks are installed at the bottoms of the stirring discs in a staggered mode. The use height of a heating table is controlled through cooperation of an arranged electric push rod and a connecting plate, then the distance between the heating table and a containing box is controlled, the temperature in the calcination process is changed, and the situation of structures in lithium iron phosphate is reduced; and the triangular stirring block extends out of the interior of the lithium iron phosphate to continuously stir the lithium iron phosphate, so that the treatment efficiency and the recovery quality of the lithium iron phosphate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery positive electrode material recovery equipment, in particular to a lithium iron phosphate recovery material calcination and degumming device. Background Art

[0002] Recycling positive electrode materials from used batteries helps alleviate resource pressure and achieve the reuse of valuable materials, which has positive significance for environmental protection and sustainable development.

[0003] Oxidation sintering is one method used to remove adhesives and conductive carbon from recycled cathode materials from used lithium iron phosphate batteries. Currently, lithium battery cathode material factories typically use roller hearth kilns to remove these adhesives and conductive carbon from recycled cathode materials. However, roller hearth kilns are static sintering equipment, which can lead to long sintering times, high energy consumption, and uneven sintering. This can cause the recycled lithium iron phosphate material to become severely compacted after oxidation sintering, affecting subsequent use.

[0004] The Chinese utility model patent with publication number CN 220853122 U discloses a device for calcining and removing glue and carbon from recycled lithium iron phosphate materials, comprising a calcining furnace with a combustion structure disposed below the calcining furnace for generating high-pressure hot air; a feeding assembly disposed above the combustion structure for passing the material to be calcined directly above the combustion structure; and a cyclone separator connected to one side of the calcining furnace. The material is passed through a feed pipe to the top of the combustion chamber. The material is blown away upon encountering the high-pressure hot air generated by the conical outlet of the combustion chamber. After rapid heat exchange, the material is instantly heated to a high temperature, where the adhesive and conductive carbon black therein are oxidized and decomposed and discharged as gas. The material passing through the calcining furnace is calcined during the movement of the airflow, which reduces the probability of powder particles becoming compacted, and reduces the difficulty of subsequent crushing and pulverization processes.

[0005] The above-mentioned public documents cannot adjust the calcination position relationship, so that the calcination temperature cannot be controlled, and the degumming process cannot have a high temperature. At the same time, the device cannot process the lithium iron phosphate during the calcination process, resulting in uneven calcination of the lithium iron phosphate, which will still lead to the occurrence of block bonding. Therefore, a lithium iron phosphate recycling material calcination and degumming device is now needed. Utility Model Content

[0006] The purpose of the utility model is to provide a device for calcining and degumming lithium iron phosphate recycled materials, which changes the calcination temperature by setting a heating table with adjustable use height to avoid the occurrence of block connection, thereby solving the technical problems mentioned in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lithium iron phosphate recycling material calcination and degumming device, comprising a working box, a heating platform movably installed inside the working box, a placement box clamped and placed on the upper part of the working box, a heat-insulating cover plate plugged and installed on the top of the working box, a heat-insulating pad filled inside the heat-insulating cover plate, two groups of motors symmetrically installed on the upper part of the heat-insulating cover plate, each group of the motor output end key-connected to a group of stirring disks, and a plurality of groups of triangular toggle stirring blocks staggeredly installed on the bottom of the stirring disk, each group of the triangular toggle stirring blocks extending into the placement box and rotating;

[0008] A filter box is provided at the rear side of the working box. The filter box is connected and installed with the heat insulation cover plate, and an atomizing nozzle is provided on the upper part of the filter box.

[0009] Preferably, a card slot is provided in the upper inner part of the working box, and limit slots are symmetrically provided on the left and right sides of the working box. Limit slides are installed on the heating platform corresponding to the limit slots, and a connecting plate is fixedly installed on the outside of the limit slide. Several groups of ventilation holes are provided through the symmetrical limit slots on the left and right sides of the heating platform.

[0010] Preferably, the connecting plate is slidably installed in contact with the surface of the working box, and two groups of electric push rods are respectively installed on the outer end of the working box corresponding to each group of connecting plates, and the telescopic top ends of the electric push rods are bolted to the connecting plates.

[0011] Preferably, the placement box is engaged with the card slot, and four groups of positioning card plates are symmetrically installed in pairs on the left and right sides of the placement box. A connecting card plate is installed at the bottom of the insulation cover corresponding to the position of each group of positioning card plates, and the connecting card plate is engaged with the positioning card plate.

[0012] Preferably, an exhaust pipe is installed through the top of the insulation cover plate corresponding to the air gathering groove position, a protective seat is installed at the bottom of the insulation pad corresponding to the motor output end position, and the central axis of the stirring plate extends from the center of the protective seat and is key-connected to the motor output end.

[0013] Preferably, a connecting pipe is installed on the top of the filter box, an air supply pipe is installed on one side of the connecting pipe, the air supply pipe is sealedly connected to the exhaust pipe, and the atomizing nozzle is clamped and installed on the connecting pipe.

[0014] Preferably, a first collection box is inserted into the filter box, a bottom plate is installed at the bottom of the first collection box, the bottom plate is snap-fitted to the filter box, and a second collection box is placed inside the first collection box.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The height of the heating table is controlled by cooperating with the connecting plate, and then the distance between the heating table and the placement box is controlled to change the temperature during the calcination process and reduce the occurrence of structural problems in the lithium iron phosphate. At the same time, the stirring disk is controlled by the motor to rotate, so that the triangular stirring block extends out of the lithium iron phosphate and continuously stirs it, thereby improving the calcination uniformity, oxidizing and decomposing the adhesive and conductive carbon black remaining in the lithium iron phosphate and discharging them in the form of gas, thereby improving the processing efficiency of the lithium iron phosphate and the quality of recycling.

[0017] 2. The gas discharged from the oxidative decomposition of adhesives and conductive carbon black is atomized and dust-removed, so that the particles remaining in the gas are quickly knocked off, and the atomized water is filtered through the second collection box to complete the separation of particles and water, further improving the treatment effect of lithium iron phosphate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the heating table of the utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the stirring disk of the utility model;

[0022] Figure 5 This is a schematic diagram of the disassembled installation structure of the second collection box of the utility model.

[0023] In the figure: 1. Working box; 2. Card slot; 3. Limiting slot; 4. Heating table; 5. Ventilation hole; 6. Connecting plate; 7. Electric push rod; 8. Placement box; 9. Positioning card plate; 10. Insulation cover; 11. Insulation pad; 12. Gas collection tank; 13. Exhaust pipe; 14. Protective seat; 15. Motor; 16. Stirring plate; 17. Triangular toggle stirring block; 18. Connecting card plate; 19. Filter box; 20. Connecting pipe; 21. Air supply pipe; 22. Atomizing nozzle; 23. First collection box; 24. Bottom plate; 25. Second collection box; 26. Filter plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The utility model provides: a lithium iron phosphate recovery material calcination degumming device, such as Figure 1-Figure 5 As shown, it includes a working box 1, a heating table 4 is movably installed inside the working box 1, a placement box 8 is placed on the upper part of the working box 1, a heat-insulating cover plate 10 is plugged and installed on the top of the working box 1, and a heat-insulating pad 11 is filled inside the heat-insulating cover plate 10. Two groups of motors 15 are symmetrically installed on the upper part of the heat-insulating cover plate 10, and a group of stirring disks 16 are key-connected and installed at the output end of each group of motors 15, and a number of groups of triangular toggle stirring blocks 17 are staggered at the bottom of the stirring disk 16, and each group of triangular toggle stirring blocks 17 are extended into the placement box 8 and rotated; a filter box 19 is provided on the rear side of the working box 1, and the filter box 19 is connected and installed with the heat-insulating cover plate 10, and an atomizing nozzle 22 is provided on the upper part of the filter box 19.

[0027] Preferably, a card slot 2 is provided on the upper inner part of the working box 1, and limiting slots 3 are symmetrically provided on the left and right sides of the working box 1. A limiting slide is installed at the position of the limiting slot 3 of the heating platform 4, and a connecting plate 6 is fixedly installed on the outside of the limiting slide. Several groups of ventilation holes 5 are provided through the symmetrical limiting slots 3 on the left and right sides of the heating platform 4. The card slot 2 provided on the upper inner side of the working box 1 is used to limit the placement box 8 so that the placement box 8 can be stably fixed in the position inside the working box 1, so that the calcination temperature can be changed when the electric push rod 7 moves the heating platform 4, thereby controlling the processing quality for lithium iron phosphate recovery and avoiding the block connection caused by excessive temperature during the calcination process. The limiting slots 3 provided on both sides of the working box 1 cooperate with the limiting slide to limit the connecting plate 6, so that the connecting plate 6 can slide against the surface of the working box 1, thereby more stably keeping the heating platform 4 in a balanced state during the movement.

[0028] Furthermore, the connecting plate 6 is slidably installed in contact with the surface of the working box 1, and two groups of electric push rods 7 are installed on the outer end of the working box 1 corresponding to each group of connecting plates 6. The telescopic top end of the electric push rod 7 is bolted to the connecting plate 6. The electric push rod 7 works in conjunction with the connecting plate 6 to change the use height of the heating table 4, and the ventilation holes 5 opened at the positions of the limit grooves 3 on both sides of the heating table 4 cooperate with the limit grooves 3 to enable air to be quickly injected to meet the calcination and combustion conditions. The connecting plate 6 can also serve the purpose of heat insulation to prevent high temperature from affecting the use of the electric push rod 7.

[0029] Furthermore, the placement box 8 is engaged with the card slot 2, and four groups of positioning card plates 9 are symmetrically installed on the left and right sides of the placement box 8. A connecting card plate 18 is installed at the bottom of the insulation cover 10 corresponding to the position of each group of positioning card plates 9. The connecting card plate 18 is engaged with the positioning card plates 9, and the placement box 8 is inserted into the card slot 2 to fix the position of each group of positioning card plates 9. Then, when the insulation cover 10 is engaged with the working box 1, the connecting card plate 18 can be engaged with the positioning card plate 9, and the placement box 8 can be taken out when the insulation cover 10 is raised for the second time, thereby improving the convenience of taking materials.

[0030] It is worth mentioning that an exhaust pipe 13 is installed through the top of the insulation cover 10 corresponding to the position of the gas gathering groove 12, and a protective seat 14 is installed at the bottom of the insulation pad 11 corresponding to the position of the output end of the motor 15. The central axis of the stirring plate 16 extends from the center of the protective seat 14 and is keyed to the output end of the motor 15. The insulation pad 11 installed inside the insulation cover 10 serves the purpose of heat insulation to prevent high temperatures from affecting the operation of the motor 15. The hungry protective seat 14 also serves the purpose of heat insulation to ensure the stability of the operation of the motor 15 to the greatest extent, and then control the rotation of the stirring plate 16 so that the triangular stirring block 17 can continuously stir the calcined lithium iron phosphate to ensure that the lithium iron phosphate is heated evenly and to avoid the occurrence of block connection.

[0031] Specifically, a connecting pipe 20 is installed at the top of the filter box 19, and an air supply pipe 21 is installed on one side of the connecting pipe 20. The air supply pipe 21 is sealed and connected to the exhaust pipe 13. The atomizing nozzle 22 is installed by clamping. The connecting pipe 20 at the top of the filter box 19 limits the atomizing nozzle 22. When the atomizing nozzle 22 is working, it sprays high-pressure atomized water to drive the gas to be drawn in from the inside of the air supply pipe 21 and wet the drawn-in gas.

[0032] In addition, a first collecting box 23 is inserted into the filter box 19, a bottom plate 24 is installed at the bottom of the first collecting box 23, and the bottom plate 24 is installed with the filter box 19. A second collecting box 25 is placed inside the first collecting box 23. The second collecting box 25 installed inside the first collecting box 23 is used to filter the wetted particles to separate the water and particulate matter, thereby improving the treatment quality.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for calcining and removing glue from recycled lithium iron phosphate materials, characterized in that: The invention comprises a working box (1), wherein a heating table (4) is movably installed inside the working box (1), a placement box (8) is placed on the upper part of the working box (1), a heat insulation cover plate (10) is plugged and installed on the top of the working box (1), a heat insulation pad (11) is filled inside the heat insulation cover plate (10), two groups of motors (15) are symmetrically installed on the upper part of the heat insulation cover plate (10), and a group of stirring disks (16) are key-connected and installed at the output end of each group of the motors (15), and a plurality of groups of triangular stirring blocks (17) are staggeredly installed at the bottom of the stirring disk (16), and each group of the triangular stirring blocks (17) extends into the interior of the placement box (8) and is rotatably arranged; A filter box (19) is provided at the rear side of the working box (1), the filter box (19) is connected and installed with the heat insulation cover plate (10), and an atomizing nozzle (22) is provided on the upper part of the filter box (19).

2. The device for calcining and removing glue from recovered lithium iron phosphate materials according to claim 1, characterized in that: A card slot (2) is provided on the upper inner portion of the working box (1), and limit slots (3) are symmetrically provided on the left and right sides of the working box (1). A limit slide is installed on the heating platform (4) at the position corresponding to the limit slot (3), and a connecting plate (6) is fixedly installed on the outside of the limit slide. A plurality of groups of ventilation holes (5) are provided through the symmetrical limit slots (3) on the left and right sides of the heating platform (4).

3. The device for calcining and removing glue of lithium iron phosphate recovered materials according to claim 2, characterized in that: The connecting plate (6) is slidably mounted on the surface of the working box (1), and two groups of electric push rods (7) are respectively mounted on the outer end of the working box (1) corresponding to each group of connecting plates (6). The telescopic top ends of the electric push rods (7) are bolted to the connecting plates (6).

4. The device for calcining and removing glue from recovered lithium iron phosphate materials according to claim 3, characterized in that: The placement box (8) is engaged with the card slot (2), and four groups of positioning card plates (9) are symmetrically installed in pairs on the left and right sides of the placement box (8). A connecting card plate (18) is installed at the bottom of the heat-insulating cover plate (10) at a position corresponding to each group of positioning card plates (9), and the connecting card plate (18) is engaged with the positioning card plate (9).

5. The device for calcining and removing glue of lithium iron phosphate recovered material according to claim 4, characterized in that: An exhaust pipe (13) is installed through the top of the heat-insulating cover plate (10) at a position corresponding to the gas collecting groove (12), a protective seat (14) is installed at the bottom of the heat-insulating pad (11) at a position corresponding to the output end of the motor (15), and a central axis of the stirring disk (16) extends from the center of the protective seat (14) and is key-connected to the output end of the motor (15).

6. The device for calcining and removing glue of lithium iron phosphate recovered materials according to claim 5, characterized in that: The top of the filter box (19) is connected to a connecting pipe (20), one side of the connecting pipe (20) is connected to an air supply pipe (21), the air supply pipe (21) is sealed and connected to the exhaust pipe (13), and the atomizing nozzle (22) is clamped and installed on the connecting pipe (20).

7. The device for calcining and removing glue of lithium iron phosphate recovered materials according to claim 6, characterized in that: A first collection box (23) is inserted into the filter box (19), a bottom plate (24) is installed at the bottom of the first collection box (23), and the bottom plate (24) is snap-fitted to the filter box (19), and a second collection box (25) is placed inside the first collection box (23).

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