Waste lithium iron phosphate battery recovery device and recovery method

Abstract

The invention relates to the field of waste battery recovery, and discloses a waste lithium iron phosphate battery recovery device and method, and the waste lithium iron phosphate battery recovery device comprises a working box, a crushing roller and an upper working plate; the device further comprises a blowing switch unit arranged in the working box, the waste lithium iron phosphate batteries are crushed and decomposed into crushed materials through crushing rollers in the working box, the decomposed crushed materials fall onto the upper working plate, and then the driving assembly drives the blowing heating assembly to blow and dry the crushed materials falling onto the upper working plate. By means of the arrangement, the situation that the crushed materials adhere to the working box due to the moisture or adhere to a screen in the follow-up screening and filtering work is avoided, valuable materials such as copper foil and aluminum foil in the crushed materials can be better separated out and collected, and the situation that the valuable materials such as the copper foil and the aluminum foil are not separated out and cannot be separated out is avoided. And resource waste caused by adhesion to a working box or a sieve plate is avoided.

Description

Technical Field

[0001] The present invention relates to the field of waste battery recycling, and in particular to a waste lithium iron phosphate battery recycling device and a recycling method. Background Art

[0002] The recycling of waste lithium iron phosphate batteries has important environmental and economic significance. By recycling the valuable metals (such as lithium, iron, phosphorus, etc.) in waste batteries, it can reduce the mining of primary mineral resources, reduce resource consumption and environmental pollution. At the same time, the recycled waste batteries can also be used as renewable resources to prepare new battery materials or other products, realizing the recycling of resources.

[0003] Patent No. CN113600285B discloses a crushing device for recycling lithium iron phosphate batteries, including a box body, and a feed port is provided on the upper surface of the box body. The present invention sets crushing teeth, sliding rods and blocks. When the main body moves axially, the sliding rod, the block and the main body will move relative to each other, so that the sliding rod can transport the gas in the left chamber of the main body to the sliding cavity. The gas pushes the crushing teeth at the right end to move upward. At the same time, the block extracts the gas in the chamber of the slide seat, so that the crushing teeth at the left end move upward. After the crushing teeth move upward, the crushing teeth that are in contact with each other will move radially, thereby generating radial kneading force, thereby further improving the crushing effect of the battery. After that, the main body is reset, and the sliding rod and the block are reset synchronously, so that the crushing teeth move downward and reset. Through the reciprocating up and down movement of the crushing teeth, the distance between adjacent crushing teeth increases and decreases accordingly, so that the metal materials stuck on the adjacent crushing teeth are detached to avoid affecting the crushing operation.

[0004] In the prior art, the reciprocating movement of the crushing teeth is used to separate the metal materials stuck on the crushing teeth to avoid affecting the crushing operation. However, the waste lithium iron phosphate batteries must be cleaned and discharged before being crushed, which causes the waste lithium iron phosphate batteries to contain moisture. The staff may simply handle and control the moisture in the lithium iron phosphate batteries, but they cannot completely remove the moisture in the lithium iron phosphate batteries. This causes the battery fragments that are crushed into fine materials to adhere to the box or the screen plate, making it impossible to collect valuable materials such as copper foil and aluminum foil in the battery, resulting in waste. The screen plate will also be blocked, and some battery fragments containing chemical raw materials will also corrode the box, causing damage to the box. Summary of the invention

[0005] The purpose of the present invention is to provide a waste lithium iron phosphate battery recycling device and recycling method to solve the following technical problems: After the used lithium iron phosphate batteries are cleaned and discharged, they are crushed, which will cause the crushed used lithium iron phosphate batteries to contain moisture, causing the crushed materials to stick to the box or the screen plate, and also making it impossible to collect valuable materials such as copper foil and aluminum foil in the battery, resulting in waste.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A waste lithium iron phosphate battery recycling device, comprising a working box, a crushing roller and an upper working plate; and also comprising a blowing switch unit arranged in the working box; The crushing rollers are provided with two, and are symmetrically rotatably arranged in the working box; The upper working plate is arranged in the working box; The blowing switch unit is arranged in the working box, and includes a driving component, a blowing heating component, a switch component, and a pushing component; the driving component drives the blowing heating component to heat and blow; the driving component drives the switch component to switch; the driving component drives the pushing component to move; The used lithium iron phosphate batteries after cleaning and discharge enter the working box, are crushed by the crushing rollers, and fall onto the upper working plate below after crushing. The driving component drives the blowing and heating component to remove moisture from the used lithium iron phosphate battery fragments on the upper working plate. The upper working plate is controlled to switch at intervals by the switch component so that moisture in the fragments can be effectively removed. The fragments on the upper working plate are pushed and turned by the pushing component to prevent the fragments from accumulating and affecting drying.

[0007] Further, the driving assembly includes a driving box, a driving motor and a driving shaft; The blowing and heating assembly comprises an air bin, fan blades and a heating plate; The driving box is fixedly arranged at one end of the working box; the driving shaft is rotatably arranged in the driving box, and the driving shaft passes through the working box; the driving motor is fixedly arranged outside the driving box, and the driving motor is connected to the driving shaft; The wind bin is fixedly arranged at the other end of the working box; the fan blade is fixedly arranged at one end of the driving shaft located in the wind bin; and the heating plate is fixedly arranged in the wind bin.

[0008] Further, the driving assembly also includes a half-toothed gear and a second toothed plate; The switch assembly includes a limit rod, a first spring, a connecting rod, a connecting block and a lower working plate; Wherein, the half-toothed gear is fixedly arranged on the driving shaft and is located in the working box; the second toothed plate is fixedly arranged on the bottom of the upper working plate, and the second toothed plate is sleeved on the limiting rod; the half-toothed gear is meshed with the second toothed plate; The limiting rod is fixedly arranged in the working box and is located below the upper working plate; the first spring is sleeved on the limiting rod, and the two ends of the first spring are respectively fixed on the working box and the second tooth plate; The upper working plate is slidably arranged on the working box; the connecting rod is fixedly arranged on the bottom of the upper working plate outside the working box; the connecting block is fixedly arranged on the other end of the connecting rod; the lower working plate is fixedly arranged on the top of the connecting block, and the lower working plate slides on the working box.

[0009] Further, the driving assembly also includes a second bevel gear, a first bevel gear and a support block; The pushing assembly includes a rotating column, a fixed column, a moving frame, a push rod and a scraper; Wherein, the second bevel gear is fixedly arranged on the driving shaft and arranged in the driving box; the supporting block is fixedly arranged in the driving box; the first bevel gear is rotatably arranged on the supporting block; the first bevel gear is meshed with the second bevel gear; The rotating column is fixedly arranged on the top of the first bevel gear; the fixed column is fixedly arranged at the top edge of the rotating column; the movable frame is sleeved on the fixed column; the push rod is fixedly arranged at one end of the movable frame close to the working box; the scraper is fixedly arranged at the other end of the push rod, and the scraper slides on the upper working plate.

[0010] Furthermore, a movable groove is opened on the inner side of the working box; a first tooth plate is fixedly connected in the movable groove; a fixed block is fixedly connected to the top of the lower working plate; two fixed blocks are provided and are symmetrically arranged on the top of the lower working plate; a rotating shaft is rotatably connected to the fixed block; a rotating block is fixedly connected to the rotating shaft; a rolling gear is fixedly connected to one end of the rotating shaft located in the movable groove; the rolling gear is meshed with the first tooth plate.

[0011] Furthermore, one end of the driving shaft located outside the wind bin is fixedly connected to the second connecting wheel; the outside of the working box is rotatably connected to a driven gear; two driven gears are provided and symmetrically arranged on the outside of the working box, and the driven gears are connected to the crushing roller; a driven rod is fixedly connected to the driven gear; the other end of the driven rod is fixedly connected to the first connecting wheel; belts are sleeved on the first connecting wheel and the second connecting wheel; a support plate is fixedly connected to the wind bin; a driven rod is rotatably provided at the other end of the support plate.

[0012] Furthermore, a baffle plate is fixedly connected in the air bin; and a number of air holes are evenly and equidistantly provided on the baffle plate.

[0013] A method for recycling waste lithium iron phosphate batteries, the recycling method comprising the following steps: S1: Put the waste lithium iron phosphate battery into the working box, and crush the waste lithium iron phosphate battery into fragments through the crushing roller in the working box; S2: The scrap lithium iron phosphate batteries that have been broken into pieces fall onto the upper working plate in the working box, and then the fan blades in the wind bin blow the airflow, allowing the airflow to pass through the heating plate for heating, and the heated airflow is blown into the working box to dry the pieces on the upper working plate, so that the pieces on the upper working plate are free of moisture; S3: The half-toothed gear rotates to drive the second gear to move, so that the upper working plate moves to push the dried scraps to the bottom of the working box, and the dried scraps are discharged from the working box through the discharge port at the bottom of the working box to enter the next process for processing.

[0014] Beneficial effects of the present invention: (1) The waste lithium iron phosphate battery is crushed and decomposed into fragments by the crushing rollers in the working box. The decomposed fragments fall onto the upper working plate, and then the driving component drives the blowing and heating component to blow and dry the fragments that fall onto the upper working plate to drain the moisture in the fragments. This arrangement prevents the fragments from sticking to the working box due to moisture or sticking to the screen during subsequent screening and filtering work, and can better separate valuable materials such as copper foil and aluminum foil from the fragments for collection, thereby preventing valuable materials such as copper foil and aluminum foil from being stuck to the working box or the screen plate due to failure to be separated, causing waste of resources; (2) After crushing, the scrap lithium iron phosphate battery fragments fall onto the upper working plate and are dried by the blowing and heating component to prevent the blowing and heating component from blowing all the fragments to one end of the upper working plate. Therefore, the driving component drives the pushing component to push the fragments blown to one end of the upper working plate, so that the fragments on the upper working plate are close to the blowing and heating component, so that the blowing and heating component can dry the fragments more effectively. The pushing component can also turn over the fragments on the upper working plate, so that the fragments accumulated on the bottom layer are turned over to the upper layer, so as to avoid the fragments on the bottom layer not being effectively dried, which affects the subsequent screening and separation of valuable materials such as copper foil and aluminum foil in the fragments; (3) Because a large amount of waste lithium iron phosphate battery fragments cannot be dried at once, they need to stay on the upper working plate for a longer period of time. Therefore, the drive component drives the switch component to make the upper working plate slowly slide toward one side of the working box, so that the fragments on the upper working plate slowly fall off the upper working plate. This setting allows the fragments to stay on the upper working plate for a longer period of time, so that the fragments can eliminate the moisture inside them, and the fragments will not be unable to be effectively dried due to direct falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1It is a front perspective view of the present invention; Figure 2 is a cross-sectional view of the stroke chamber of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 is a cross-sectional view of the working box in the present invention; Figure 5 is a cross-sectional view of the drive box in the present invention; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 It is a rear view stereogram of the present invention.

[0017] Description of the drawings: 1. working box; 2. crushing roller; 3. upper working plate; 4. driving box; 5. driving motor; 6. lower working plate; 7. driven gear; 8. first connecting wheel; 9. driven rod; 10. supporting plate; 11. belt; 12. second connecting wheel; 13. wind bin; 14. fan blade; 15. heating plate; 16. blocking plate; 17. connecting block; 18. connecting rod; 19. push rod; 20. scraper; 21. driving shaft; 22. rotating block; 23. half-tooth gear; 24. first spring; 25. moving frame; 26. fixed column; 27. rotating column; 28. supporting block; 29. ​​first bevel gear; 30. second bevel gear; 31. moving groove; 32. first tooth plate; 33. rolling gear; 34. rotating shaft; 35. fixed block; 36. second tooth plate; 37. limiting rod; 38. air hole. DETAILED DESCRIPTION

[0018] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 7 As shown, the present invention is a waste lithium iron phosphate battery recycling device, comprising a working box 1, a crushing roller 2 and an upper working plate 3; and also comprising a blowing switch unit arranged in the working box 1; The crushing rollers 2 are provided with two, and are symmetrically rotatably arranged in the working box 1; The upper working plate 3 is arranged in the working box 1; The blowing switch unit is arranged in the working box 1, and includes a driving component, a blowing heating component, a switch component, and a pushing component; the driving component drives the blowing heating component to heat and blow; the driving component drives the switch component to switch; the driving component drives the pushing component to move; The used lithium iron phosphate batteries after cleaning and discharge enter the working box 1, and are crushed by the crushing roller 2. After crushing, they fall onto the upper working plate 3 below. The driving component drives the blowing and heating component to remove moisture from the waste lithium iron phosphate battery fragments on the upper working plate 3. The upper working plate 3 is controlled to be switched at intervals by the switch component, so that the moisture in the fragments can be effectively removed. The fragments on the upper working plate 3 are pushed and turned by the pushing component to prevent the accumulation of fragments from affecting drying. The cleaned and discharged waste lithium iron phosphate batteries are placed in the working box 1, and then the crushing rollers 2 in the working box 1 are used to crush the waste lithium iron phosphate batteries into fragments. The decomposed fragments fall onto the upper working plate 3, and then the driving component drives the blowing and heating component to blow and dry the fragments that fall onto the upper working plate 3, so as to drain the moisture in the fragments. This arrangement avoids the fragments from sticking to the working box 1 due to the presence of moisture or sticking to the screen during subsequent screening and filtering work, and can better separate valuable materials such as copper foil and aluminum foil from the fragments for collection, thereby preventing valuable materials such as copper foil and aluminum foil from being stuck to the working box 1 or the screen plate due to the lack of separation, thus causing waste of resources. The crushed waste lithium iron phosphate battery fragments fall onto the upper working plate 3 and are dried by the blowing and heating component to prevent the blowing and heating component from blowing all the fragments to one end of the upper working plate 3. Therefore, the driving component drives the pushing component to push the fragments blown to one end of the upper working plate 3, so that the fragments on the upper working plate 3 are close to the blowing and heating component, so that the blowing and heating component can dry the fragments more effectively. The pushing component can also turn over the fragments on the upper working plate 3, so that the fragments accumulated on the bottom layer are turned over to the upper layer, so as to avoid the fragments on the bottom layer from not being effectively dried, which affects the screening and separation of valuable materials such as copper foil and aluminum foil in the subsequent fragments; Because a large amount of waste lithium iron phosphate battery fragments cannot be dried at once, they need to stay on the upper working plate 3 for a longer period of time. Therefore, the driving component drives the switch component to make the upper working plate 3 slowly slide toward the side of the working box 1, so that the fragments on the upper working plate 3 slowly fall off the upper working plate 3. This arrangement allows the fragments to stay on the upper working plate 3 for a longer period of time, so that the fragments can eliminate the moisture inside them, and the fragments will not be unable to be effectively dried due to direct falling.

[0020] See also Figures 1 to 3As shown, the driving assembly includes a driving box 4, a driving motor 5 and a driving shaft 21; The blowing and heating assembly includes an air bin 13, fan blades 14 and a heating plate 15; The driving box 4 is fixedly arranged at one end of the working box 1; the driving shaft 21 is rotatably arranged in the driving box 4, and the driving shaft 21 passes through the working box 1; the driving motor 5 is fixedly arranged outside the driving box 4, and the driving motor 5 is connected to the driving shaft 21; The wind bin 13 is fixedly arranged at the other end of the working box 1; the fan blade 14 is fixedly arranged at one end of the driving shaft 21 located in the wind bin 13; the heating plate 15 is fixedly arranged in the wind bin 13; The driving motor 5 fixed on the driving box 4 drives the driving motor 5 to rotate the driving shaft 21, and the rotating driving shaft 21 drives the fan blades 14 in the wind bin 13 to rotate. The rotating fan blades 14 bring the external airflow into the wind bin 13 and blow it onto the heating plate 15. The airflow is heated by the heating plate 15 to form hot air and then blown into the working box 1, so that the hot air dries the waste lithium iron phosphate battery fragments on the upper working plate 3 to discharge moisture from the fragments. The interior of the heating plate 15 is made of a thermal resistor wire, which is heated by connecting an external power supply. The wind bin 13 is provided with holes, and the external airflow enters the wind bin 13 through the holes on the wind bin 13.

[0021] See also Figures 2 to 4 As shown, the driving assembly further includes a half-toothed gear 23 and a second toothed plate 36; The switch assembly includes a limit rod 37, a first spring 24, a connecting rod 18, a connecting block 17 and a lower working plate 6; The half-toothed gear 23 is fixedly arranged on the driving shaft 21 and is located in the working box 1; the second toothed plate 36 is fixedly arranged on the bottom of the upper working plate 3, and the second toothed plate 36 is sleeved on the limiting rod 37; the half-toothed gear 23 is meshed with the second toothed plate 36; The limiting rod 37 is fixedly disposed in the working box 1 and is located below the upper working plate 3; the first spring 24 is sleeved on the limiting rod 37, and the two ends of the first spring 24 are respectively fixed on the working box 1 and the second tooth plate 36; The upper working plate 3 is slidably arranged on the working box 1; the connecting rod 18 is fixedly arranged on the bottom of the upper working plate 3 outside the working box 1; the connecting block 17 is fixedly arranged on the other end of the connecting rod 18; the lower working plate 6 is fixedly arranged on the top of the connecting block 17, and the lower working plate 6 slides on the working box 1; The half-toothed gear 23 is driven to rotate by the driving shaft 21, and the rotating half-toothed gear 23 drives the second toothed plate 36 to move on the limiting rod 37, and the moving second toothed plate 36 drives the upper working plate 3 to slide toward the outside of the working box 1. When the second toothed plate 36 moves, the first spring 24 sleeved on the limiting rod 37 is compressed. When the half-toothed gear 23 rotates to the side without teeth, the second toothed plate 36 will lack the driving force. At this time, the compressed first spring 24 will release the elastic deformation to push the second toothed plate 36 toward the inside of the working box 1, so that the second toothed plate 36 drives the upper working plate 3 back to the working box 1; When the upper working plate 3 slides toward the outside of the working box 1, it will drive the connecting rod 18 and the connecting block 17 to move, and the moving connecting block 17 will cause the lower working plate 6 to slide into the working box 1. Because the upper working plate 3 slides out of the working box 1, the crushed materials on the upper working plate 3 are pushed down, and the crushed materials pushed down are not completely dried. Therefore, the lower working plate 6 will catch the fallen crushed materials. The lower working plate 6 is also at the air outlet position where the hot air is sent out by the fan blades 14, so the crushed materials that fall on the lower working plate 6 can continue to be dried. When the upper working plate 3 moves into the working box 1, the lower working plate 6 will be driven to move out of the working box 1 on the contrary, so that the crushed materials on the lower working plate 6 will fall under the push of the working box 1 and fall into the bottom of the working box 1, and the crushed materials are discharged from the working box 1 through the opening at the bottom of the working box 1.

[0022] See also Figure 2 , Figure 5 and Figure 6 As shown, the driving assembly further includes a second bevel gear 30, a first bevel gear 29 and a support block 28; The pushing assembly includes a rotating column 27, a fixed column 26, a moving frame 25, a push rod 19 and a scraper 20; The second bevel gear 30 is fixedly disposed on the driving shaft 21 and is disposed in the driving box 4; the support block 28 is fixedly disposed in the driving box 4; the first bevel gear 29 is rotatably disposed on the support block 28; the first bevel gear 29 is meshed with the second bevel gear 30; The rotating column 27 is fixedly arranged on the top of the first bevel gear 29; the fixed column 26 is fixedly arranged at the top edge of the rotating column 27; the moving frame 25 is sleeved on the fixed column 26; the push rod 19 is fixedly arranged on one end of the moving frame 25 close to the working box 1; the scraper 20 is fixedly arranged on the other end of the push rod 19, and the scraper 20 slides on the upper working plate 3; The second bevel gear 30 is driven to rotate by the rotation of the driving shaft 21, and the rotating second bevel gear 30 drives the first bevel gear 29 to rotate. The rotating first bevel gear 29 causes the top rotating column 27 and the fixed column 26 on the rotating column 27 to rotate. Since the fixed column 26 is arranged on the edge of the rotating column 27, the fixed column 26 makes a circular motion, so it drives the driven rod 9 and the moving frame 25 to make a reciprocating motion. The reciprocating movement of the driven rod 9 causes the scraper 20 fixed on the driven rod 9 to slide back and forth on the upper working plate 3. The sliding scraper 20 pushes the crushed materials on the upper working plate 3, so that the crushed materials are pushed to the position of the air outlet, so that the crushed materials can be better dried.

[0023] See also Figure 5 and Figure 6 As shown, a moving groove 31 is opened on the inner side of the working box 1; a first tooth plate 32 is fixedly connected in the moving groove 31; a fixed block 35 is fixedly connected to the top of the lower working plate 6; two fixed blocks 35 are provided and symmetrically arranged on the top of the lower working plate 6; a rotating shaft 34 is rotatably connected to the fixed block 35; a rotating block 22 is fixedly connected to the rotating shaft 34; a rolling gear 33 is fixedly connected to one end of the rotating shaft 34 located in the moving groove 31; the rolling gear 33 is meshed with the first tooth plate 32; The movement of the lower working plate 6 will cause the rolling gear 33 on the fixed block 35 to roll on the first tooth plate 32 in the moving groove 31, which will cause the rolling gear 33 to rotate. The rotating rolling gear 33 will drive the rotating shaft 34 to rotate, and the rotating rotating shaft 34 will cause the rotating block 22 fixed on it to rotate. This arrangement is to prevent the crushed materials falling from the upper working plate 3 from being directly brought to the bottom of the working box 1 by the hot air blown out by the fan blades 14 instead of falling on the lower working plate 6. The rotating block 22 can have a certain intercepting effect. When the lower working plate 6 cooperates with the working box 1 to push the crushed materials above out, the rotating rotating block 22 can knock the crushed materials out, so that the crushed materials can be pushed out more dispersedly, and the hot air blown out by the fan blades 14 can dry them again, so that the moisture in the crushed materials can be completely removed.

[0024] See also Figure 5 and Figure 7 As shown, one end of the driving shaft 21 outside the wind bin 13 is fixedly connected to the second connecting wheel 12; the outside of the working box 1 is rotatably connected to the driven gear 7; two driven gears 7 are provided, and are symmetrically arranged outside the working box 1, and the driven gear 7 is connected to the crushing roller 2; a driven rod 9 is fixedly connected to the driven gear 7; the other end of the driven rod 9 is fixedly connected to the first connecting wheel 8; the first connecting wheel 8 and the second connecting wheel 12 are sleeved with a belt 11; the wind bin 13 is fixedly connected to the support plate 10; the other end of the support plate 10 is rotatably provided with the driven rod 9; The second connecting wheel 12 is driven to rotate by the driving shaft 21, and the rotating second connecting wheel 12 drives the belt 11 and the first connecting wheel 8 to rotate. The rotation of the first connecting wheel 8 causes the driven rod 9 to rotate, and the rotating driven rod 9 causes the driven gear 7 to rotate. The two driven gears 7 are meshed. When one driven gear 7 rotates, the two driven gears 7 rotate together. The driven gear 7 is connected to the crushing roller 2 in the working box 1, so the rotating driven gear 7 drives the crushing roller 2 to rotate. The rotating crushing roller 2 crushes the waste lithium iron phosphate battery into fragments, which is convenient for recycling.

[0025] See also Figure 2 , Figure 4 and Figure 5 As shown, a baffle plate 16 is fixedly connected to the air bin 13; a number of air holes 38 are evenly and equidistantly provided on the baffle plate 16; The baffle plate 16 is provided to prevent the broken materials from entering the wind bin 13 and affecting the heating work of the fan blades 14 in the wind bin 13 . The hot air in the wind bin 13 is blown into the working box 1 through the air holes 38 on the baffle plate 16 .

[0026] See also Figures 1 to 7 As shown, a method for recycling waste lithium iron phosphate batteries comprises the following steps: S1: Put the waste lithium iron phosphate battery into the working box 1, and crush the waste lithium iron phosphate battery into fragments through the crushing roller 2 in the working box 1; S2: The waste lithium iron phosphate batteries crushed into pieces fall onto the upper working plate 3 in the working box 1, and then the fan blades 14 in the wind bin 13 blow the airflow, allowing the airflow to pass through the heating plate 15 for heating, and the heated airflow is blown into the working box 1 to dry the pieces on the upper working plate 3, so that the pieces on the upper working plate 3 are free of moisture; S3: The half-toothed gear 23 rotates to drive the second gear to move, so that the upper working plate 3 moves to push the dried scraps to the bottom of the working box 1, and the dried scraps are discharged from the working box 1 through the discharge port at the bottom of the working box 1 to enter the next process for processing.

[0027] The working principle of the present invention is as follows: the used lithium iron phosphate batteries after cleaning and discharge are placed into the working box 1, and then the used lithium iron phosphate batteries are crushed and decomposed into fragments by the crushing rollers 2 in the working box 1. The decomposed fragments fall onto the upper working plate 3, and then the driving component drives the blowing and heating component to blow and dry the fragments falling onto the upper working plate 3, so as to drain the moisture in the fragments. This arrangement avoids the fragments from adhering to the working box 1 due to the presence of moisture or adhering to the screen during subsequent screening and filtering work, and can better separate valuable materials such as copper foil and aluminum foil from the fragments for collection, thereby preventing valuable materials such as copper foil and aluminum foil from being not separated and adhering to the working box 1 or the screen plate, causing waste of resources. The crushed waste lithium iron phosphate battery fragments fall onto the upper working plate 3 and are dried by the blowing and heating component to prevent the blowing and heating component from blowing all the fragments to one end of the upper working plate 3. Therefore, the driving component drives the pushing component to push the fragments blown to one end of the upper working plate 3, so that the fragments on the upper working plate 3 are close to the blowing and heating component, so that the blowing and heating component can dry the fragments more effectively. The pushing component can also turn over the fragments on the upper working plate 3, so that the fragments accumulated on the bottom layer are turned over to the upper layer, so as to avoid the fragments on the bottom layer from not being effectively dried, which affects the screening and separation of valuable materials such as copper foil and aluminum foil in the subsequent fragments; Because a large amount of waste lithium iron phosphate battery fragments cannot be dried at once, they need to stay on the upper working plate 3 for a longer period of time. Therefore, the driving component drives the switch component to make the upper working plate 3 slowly slide toward the side of the working box 1, so that the fragments on the upper working plate 3 slowly fall off the upper working plate 3. This arrangement allows the fragments to stay on the upper working plate 3 for a longer period of time, so that the fragments can eliminate the moisture inside them, and the fragments will not be unable to be effectively dried due to direct falling.

[0028] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A waste lithium iron phosphate battery recycling device, comprising a working box (1), a crushing roller (2) and an upper working plate (3); characterized in that: It also includes a blowing switch unit arranged in the working box (1); The crushing rollers (2) are provided with two, and are symmetrically rotatably arranged in the working box (1); The upper working plate (3) is arranged in the working box (1); The blowing switch unit is arranged in the working box (1), and comprises a driving component, a blowing heating component, a switch component, and a pushing component; the driving component drives the blowing heating component to heat and blow; the driving component drives the switch component to switch; the driving component drives the pushing component to move; After cleaning and discharging, the used lithium iron phosphate batteries enter the working box (1), and are crushed by the crushing rollers (2). After crushing, the used lithium iron phosphate batteries fall onto the upper working plate (3) below. The driving component drives the blowing and heating component to remove moisture from the waste lithium iron phosphate battery fragments on the upper working plate (3). The switch component controls the upper working plate (3) to switch on and off at intervals, so that moisture in the fragments can be effectively removed. The pushing component pushes and flips the fragments on the upper working plate (3) to prevent the fragments from piling up and affecting drying.

2. A waste lithium iron phosphate battery recycling device according to claim 1, characterized in that: The drive assembly comprises a drive box (4), a drive motor (5) and a drive shaft (21); The air blowing and heating component comprises an air bin (13), fan blades (14) and a heating plate (15); The drive box (4) is fixedly arranged at one end of the working box (1); the drive shaft (21) is rotatably arranged in the drive box (4), and the drive shaft (21) passes through the working box (1); the drive motor (5) is fixedly arranged outside the drive box (4), and the drive motor (5) is connected to the drive shaft (21); The wind bin (13) is fixedly arranged at the other end of the working box (1); the fan blade (14) is fixedly arranged at one end of the driving shaft (21) located in the wind bin (13); and the heating plate (15) is fixedly arranged in the wind bin (13).

3. A waste lithium iron phosphate battery recycling device according to claim 2, characterized in that: The drive assembly further comprises a half-toothed gear (23) and a second toothed plate (36); The switch assembly comprises a limit rod (37), a first spring (24), a connecting rod (18), a connecting block (17) and a lower working plate (6); The half-toothed gear (23) is fixedly arranged on the driving shaft (21) and is located in the working box (1); the second toothed plate (36) is fixedly arranged on the bottom of the upper working plate (3), and the second toothed plate (36) is sleeved on the limiting rod (37); the half-toothed gear (23) is meshed with the second toothed plate (36); The limiting rod (37) is fixedly arranged in the working box (1) and is located below the upper working plate (3); the first spring (24) is sleeved on the limiting rod (37), and two ends of the first spring (24) are respectively fixed on the working box (1) and the second tooth plate (36); The upper working plate (3) is slidably arranged on the working box (1); the connecting rod (18) is fixedly arranged at the bottom of the upper working plate (3) outside the working box (1); the connecting block (17) is fixedly arranged at the other end of the connecting rod (18); the lower working plate (6) is fixedly arranged on the top of the connecting block (17), and the lower working plate (6) slides on the working box (1).

4. A waste lithium iron phosphate battery recycling device according to claim 3, characterized in that: The drive assembly further comprises a second bevel gear (30), a first bevel gear (29) and a support block (28); The pushing assembly comprises a rotating column (27), a fixed column (26), a moving frame (25), a push rod (19) and a scraper (20); The second bevel gear (30) is fixedly arranged on the drive shaft (21) and is arranged in the drive box (4); the support block (28) is fixedly arranged in the drive box (4); the first bevel gear (29) is rotatably arranged on the support block (28); the first bevel gear (29) is meshed with the second bevel gear (30); The rotating column (27) is fixedly arranged on the top of the first bevel gear (29); the fixed column (26) is fixedly arranged at the top edge of the rotating column (27); the movable frame (25) is sleeved on the fixed column (26); the push rod (19) is fixedly arranged at one end of the movable frame (25) close to the working box (1); the scraper (20) is fixedly arranged at the other end of the push rod (19), and the scraper (20) slides on the upper working plate (3).

5. A waste lithium iron phosphate battery recycling device according to claim 4, characterized in that: A movable groove (31) is provided on the inner side of the working box (1); a first tooth plate (32) is fixedly connected in the movable groove (31); a fixed block (35) is fixedly connected to the top of the lower working plate (6); two fixed blocks (35) are provided and are symmetrically arranged on the top of the lower working plate (6); a rotating shaft (34) is rotatably connected to the fixed block (35); a rotating block (22) is fixedly connected to the rotating shaft (34); a rolling gear (33) is fixedly connected to one end of the rotating shaft (34) located in the movable groove (31); and the rolling gear (33) is meshed with the first tooth plate (32).

6. A waste lithium iron phosphate battery recycling device according to claim 5, characterized in that: One end of the drive shaft (21) located outside the wind bin (13) is fixedly connected to the second connecting wheel (12); the outside of the working box (1) is rotatably connected to a driven gear (7); two driven gears (7) are provided and symmetrically arranged outside the working box (1), and the driven gears (7) are connected to the crushing roller (2); a driven rod (9) is fixedly connected to the driven gear (7); the other end of the driven rod (9) is fixedly connected to the first connecting wheel (8); a belt (11) is sleeved on the first connecting wheel (8) and the second connecting wheel (12); a support plate (10) is fixedly connected to the wind bin (13); the other end of the support plate (10) is rotatably provided with a driven rod (9).

7. A waste lithium iron phosphate battery recycling device according to claim 2, characterized in that: A baffle plate (16) is fixedly connected to the wind bin (13); a number of air holes (38) are evenly and equidistantly formed on the baffle plate (16).

8. A method for recycling waste lithium iron phosphate batteries, using a waste lithium iron phosphate battery recycling device according to any one of claims 1 to 7, characterized in that: The recycling method comprises the following steps: S1: placing the waste lithium iron phosphate battery into a working box (1), and crushing the waste lithium iron phosphate battery into fragments by means of a crushing roller (2) in the working box (1); S2: The waste lithium iron phosphate batteries that have been crushed into fragments fall onto the upper working plate (3) in the working box (1), and then the fan blades (14) in the wind bin (13) blow air to allow the air to pass through the heating plate (15) for heating. The heated air is blown into the working box (1) to dry the fragments on the upper working plate (3), so that the fragments on the upper working plate (3) are free of moisture; S3: The half-toothed gear (23) rotates to drive the second gear to move, so that the upper working plate (3) moves to push the dried scraps to the bottom of the working box (1), and the dried scraps are discharged from the working box (1) through the discharge port at the bottom of the working box (1) to enter the next process for processing.

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