Drying equipment for lithium immersion processing of waste lithium iron phosphate

Abstract

The utility model belongs to the technical field of lithium-leaching drying of waste lithium iron phosphate, and particularly relates to drying equipment for lithium-leaching processing of waste lithium iron phosphate, which comprises a bottom plate. The top of the bottom plate is fixedly connected with a pair of supporting plates. Sliding grooves are formed in the tops of the pair of supporting plates. The bottoms of the pair of sliding grooves are fixedly connected with sliding blocks through first springs, and the sliding blocks are slidably connected into the sliding grooves. A drying furnace is fixedly connected between the opposite side walls of the pair of sliding blocks through a set of first fixing rods, so that the problems that in the drying process, waste lithium iron phosphate needing to be dried is generally placed in the drying furnace to be dried, but generally stacked, and consequently the drying furnace cannot evenly heat the waste lithium iron phosphate in the drying process, and the drying efficiency is affected are solved. And non-uniform drying may cause that part of lithium is not fully dried, and the part of lithium may be treated as a waste material in the subsequent treatment process, so that the recovery rate of lithium is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying waste lithium iron phosphate lithium immersion, in particular to drying equipment for processing waste lithium iron phosphate lithium immersion. Background Art

[0002] Lithium leaching of waste lithium iron phosphate is a method for recycling waste lithium iron phosphate batteries. Lithium iron phosphate batteries are lithium-ion batteries, mainly composed of positive electrode materials (lithium iron phosphate), negative electrode materials (graphite), electrolytes and diaphragms. After disassembly, crushing, screening and other pretreatments, waste lithium iron phosphate batteries are obtained as positive electrode materials. The purpose of lithium leaching of waste lithium iron phosphate is to recover lithium resources from waste batteries. Lithium is an important rare metal and is widely used in batteries, aerospace, medical equipment and other fields. With the popularity of electric vehicles and mobile devices, the demand for lithium-ion batteries has increased year by year, and the contradiction between the supply and demand of lithium resources has become increasingly prominent. Therefore, recovering lithium resources from waste lithium iron phosphate batteries has important economic and environmental value.

[0003] In the prior art, during the drying process, the waste lithium iron phosphate to be dried is generally placed in a drying furnace for drying, but is generally stacked, resulting in the drying furnace being unable to evenly heat the waste lithium iron phosphate during the drying process. Uneven drying may result in some lithium not being fully dried, and this part of the lithium may be treated as waste in the subsequent processing process, thereby reducing the lithium recovery rate.

[0004] To this end, the utility model provides a drying device for processing waste lithium iron phosphate and lithium immersion. Utility Model Content

[0005] In order to make up for the shortcomings of the prior art and to solve the problem that during the drying process, the waste lithium iron phosphate that needs to be dried is generally placed in a drying furnace for drying, but is generally stacked, resulting in the drying furnace being unable to evenly heat the waste lithium iron phosphate during the drying process. Uneven drying may cause part of the lithium to not be fully dried, and this part of the lithium may be treated as waste in the subsequent processing process, thereby reducing the lithium recovery rate.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a drying device for lithium immersion processing of waste lithium iron phosphate described in the utility model comprises a bottom plate; a pair of support plates are fixedly connected to the top of the bottom plate; a pair of the support plates are each provided with a sliding groove on the top; a pair of the sliding grooves are each provided with a sliding block fixedly connected to the bottom of the groove through a first spring, and the sliding block is slidably connected in the sliding groove; a drying furnace is fixedly connected between the opposite side walls of the pair of sliding blocks through a group of first fixed rods; a motor is fixedly connected to the top of the sliding block through a connecting rod; a dispersing member is provided in the drying furnace; the dispersing member is used to disperse the piled waste lithium iron phosphate; a vibration cylinder is fixedly connected to the outer circular wall of the bottom of the drying furnace; a vibration block is fixedly connected to the vibration cylinder through a second spring, and the vibration block is slidably connected in the vibration cylinder; a rotating groove is provided at the bottom of the vibration block; a driving assembly is provided in the rotating groove; the driving assembly is used to drive the rotating block to rise and fall.

[0007] Preferably, the dispersion member includes a driving rod; the driving rod is rotatably connected between a pair of opposite side walls of the sliding block, and one end of the driving rod passes through the side wall of the sliding block; one end of the driving rod is connected to the motor drive; the drying furnace is rotatably connected to the driving rod through a pair of rotating holes; a group of second fixed rods are fixedly connected to the driving rod; a dispersion rod is fixedly connected between the opposite side walls of the pair of second fixed rods.

[0008] Preferably, the driving assembly includes a linkage unit and a rotating rod; the rotating rod is rotatably connected between a pair of opposite side walls of a support plate, and one end of the rotating rod passes through the side wall of the support plate; a rotating block is rotatably connected to the rotating rod; the other end of the rotating block is rotatably connected in a rotating groove through a first rotating shaft; an L-shaped plate is fixedly connected to the side wall of the support plate, and one end of the rotating rod is rotatably connected to the vertical side wall of the L-shaped plate and passes through the vertical side wall of the L-shaped plate; a first bevel gear is fixedly connected to the rotating rod; and the linkage unit is used to drive the first bevel gear to rotate.

[0009] Preferably, the driving assembly includes a linkage unit and a rotating rod; the rotating rod is rotatably connected between a pair of opposite side walls of a support plate, and one end of the rotating rod passes through the side wall of the support plate; a rotating block is rotatably connected to the rotating rod; the other end of the rotating block is rotatably connected in a rotating groove through a first rotating shaft; an L-shaped plate is fixedly connected to the side wall of the support plate, and one end of the rotating rod is rotatably connected to the vertical side wall of the L-shaped plate and passes through the vertical side wall of the L-shaped plate; a first bevel gear is fixedly connected to the rotating rod; and the linkage unit is used to drive the first bevel gear to rotate.

[0010] Preferably, the side wall of the dispersion rod is fixedly connected with a scraper plate through a group of third springs; a pair of opposite side walls of the second fixing rods are provided with sliding grooves, and both sides of the scraper plate are slidably connected in a pair of sliding grooves.

[0011] Preferably, a group of guide cylinders are fixedly connected to the bottom of the drying furnace; a group of guide rods are fixedly connected to the top of the bottom plate; and a group of guide rods are respectively slidably connected in a group of guide cylinders.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The utility model discloses a drying device for lithium immersion processing of waste lithium iron phosphate. The driving rod drives the dispersion rod to rotate, so that the waste lithium iron phosphate in the drying furnace can be turned over by the provided dispersion rod, thereby increasing the drying surface of the waste lithium iron phosphate, avoiding the drying effect of the central part of the waste lithium iron phosphate to be not obvious enough, thereby increasing the difficulty of subsequent treatment, avoiding the waste lithium iron phosphate from being piled up, resulting in the inability of the drying furnace to heat the waste lithium iron phosphate uniformly during the drying process, and the uneven drying may cause part of the lithium to be not fully dried. This part of the lithium may be treated as waste in the subsequent treatment process, thereby reducing the recovery rate of lithium.

[0014] 2. The drying equipment for lithium immersion processing of waste lithium iron phosphate described in the utility model drives the first gear to rotate through the driving unit, thereby driving the rotating rod to rotate, and then driving the rotating block connected to the rotating groove through the first rotating shaft to rotate, thereby driving the vibration block to move up and down, and then pushing it through the elastic force of the second spring, cooperating with the first spring, so that the drying furnace vibrates up and down, thereby preventing water stains and lithium dust from adhering to the waste lithium iron phosphate during the drying process through the generated vibration, which may cause lithium agglomeration, which will affect the purity and recovery rate of lithium and increase the difficulty of subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is the front view of the utility model;

[0018] Figure 3 It is a schematic diagram of the support plate in the utility model;

[0019] Figure 4 It is a schematic diagram of the dispersion member in the utility model;

[0020] Figure 5 It is an exploded view of the vibration block of the utility model;

[0021] In the figure: 1, bottom plate; 2, support plate; 3, sliding groove; 4, sliding block; 5, drying furnace; 6, motor; 7, vibration cylinder; 8, vibration block; 9, rotating groove; 10, driving rod; 11, second fixed rod; 12, dispersion rod; 13, rotating rod; 14, rotating block; 15, L-shaped plate; 16, first bevel gear; 17, second bevel gear; 18, rotating ring; 19, elastic telescopic rod; 20, third bevel gear; 21, fourth bevel gear; 22, scraper plate; 23, sliding groove; 24, guide cylinder; 25, guide rod. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figures 1 to 5 As shown, a drying device for lithium immersion processing of waste lithium iron phosphate described in an embodiment of the utility model comprises a bottom plate 1; a pair of support plates 2 are fixedly connected to the top of the bottom plate 1; a pair of the support plates 2 are each provided with a sliding groove 3 on the top; a pair of the sliding grooves 3 are both fixedly connected to a sliding block 4 at the bottom of the groove through a first spring, and the sliding block 4 is slidably connected in the sliding groove 3; a drying furnace 5 is fixedly connected between the opposite side walls of the pair of sliding blocks 4 through a group of first fixing rods; a motor 6 is fixedly connected to the top of the sliding block 4 through a connecting rod; a dispersing member is provided in the drying furnace 5; the dispersing member is used to disperse the piled waste lithium iron phosphate; the drying furnace 5 A vibration tube 7 is fixedly connected to the outer circular wall of the bottom; a vibration block 8 is fixedly connected to the vibration tube 7 through a second spring, and the vibration block 8 is slidably connected to the vibration tube 7; a rotation groove 9 is provided at the bottom of the vibration block 8; a driving component is provided in the rotation groove 9; the driving component is used to drive the rotation block 14 to rise and fall, and when working, the motor 6 drives the dispersion member to turn over and disperse the waste lithium iron phosphate in the drying furnace 5, so as to avoid the problem that the waste lithium iron phosphate is not heated uniformly during the drying process, resulting in part of the lithium not being fully dried, and this part of the lithium may be treated as waste in the subsequent processing process, thereby reducing the recovery rate of lithium.

[0024] The dispersion member includes a driving rod 10; the driving rod 10 is rotatably connected between a pair of opposite side walls of the sliding block 4, and one end of the driving rod 10 passes through the side wall of the sliding block 4; one end of the driving rod 10 is drivingly connected to the motor 6; the drying furnace 5 is rotatably connected to the driving rod 10 through a pair of rotating holes; a group of second fixed rods 11 are fixedly connected to the driving rod 10; a dispersion rod 12 is fixedly connected between the opposite side walls of the pair of second fixed rods 11. When working, the dispersion rod 12 is driven to rotate by the driving rod 10, so that the waste lithium iron phosphate in the drying furnace 5 can be turned over by the arranged dispersion rod 12, thereby increasing the drying surface of the waste lithium iron phosphate, avoiding the drying effect of the central part of the waste lithium iron phosphate to be not obvious enough, thereby increasing the difficulty of subsequent processing, avoiding the waste lithium iron phosphate from being piled up, resulting in the inability of the drying furnace 5 to evenly heat the waste lithium iron phosphate during the drying process, and uneven drying may cause part of the lithium to not be fully dried, and this part of the lithium may be treated as waste in the subsequent processing process, thereby reducing the recovery rate of lithium.

[0025] The driving assembly includes a linkage unit and a rotating rod 13; the rotating rod 13 is rotatably connected between a pair of opposite side walls of the support plate 2, and one end of the rotating rod 13 passes through the side wall of the support plate 2; a rotating block 14 is rotatably connected to the rotating rod 13; the other end of the rotating block 14 is rotatably connected to the rotating groove 9 through a first rotating shaft; an L-shaped plate 15 is fixedly connected to the side wall of the support plate 2, and one end of the rotating rod 13 is rotatably connected to the vertical side wall of the L-shaped plate 15 and passes through the vertical side wall of the L-shaped plate 15; a first bevel gear 16 is fixedly connected to the rotating rod 13; the linkage unit is used to drive the first The bevel gear 16 rotates, and when working, the first gear is driven to rotate through the driving unit, thereby driving the rotating rod 13 to rotate, and then driving the rotating block 14 connected to the rotating groove 9 through the first rotating shaft to rotate, thereby driving the vibration block 8 to move up and down, and then the elastic force of the second spring is used to push it, and cooperate with the first spring to make the drying furnace 5 vibrate up and down, so as to avoid the waste lithium iron phosphate from being adhered by water stains and lithium dust during the drying process through the generated vibration, which may cause lithium agglomeration, which will affect the purity and recovery rate of lithium and increase the difficulty of subsequent processing.

[0026] The driving assembly includes a second bevel gear 17; the second bevel gear 17 is fixedly connected to the driving rod 10; a rotating ring 18 is fixedly connected to the outer circular wall of the bottom of the motor 6 through an L-shaped rod; an elastic telescopic rod 19 is rotatably connected to the inner wall of the rotating ring 18; a third bevel gear 20 is fixedly connected to the top of the elastic telescopic rod 19; the second bevel gear 17 and the third bevel gear 20 are meshed and connected with each other; the telescopic end of the elastic telescopic rod 19 is rotatably connected to the horizontal top of the L-shaped plate 15, and the telescopic end of the elastic telescopic rod 19 passes through the horizontal bottom of the L-shaped plate 15; The telescopic end of the elastic telescopic rod 19 is fixedly connected with a fourth bevel gear 21; the first bevel gear 16 and the fourth bevel gear 21 are meshed and connected with each other. When working, the first bevel gear 16, the second bevel gear 17, the third bevel gear 20, the fourth bevel gear 21 and the elastic telescopic rod 19 are set, so that the drying furnace 5 can also transmit the rotation rod 13 when vibrating up and down, so that the driving rod 10 can drive the rotation rod 13 to rotate, so that the drying furnace 5 vibrates. Through the vibration of the drying furnace 5, the dried waste lithium iron phosphate is prevented from agglomerating and affecting subsequent processing.

[0027] The side wall of the dispersion rod 12 is fixedly connected with a scraper plate 22 through a group of third springs; a pair of opposite side walls of the second fixed rods 11 are provided with slide grooves 23, and the two sides of the scraper plate 22 are respectively slidably connected in a pair of slide grooves 23. During operation, the scraper plate 22 can be set to increase the rotation speed of the motor 6 after the drying is completed, so that the scraper plate 22 can be fixed with the scraper plate 22 through the third spring through the centrifugal force of the rotation of the driving rod 10 to fit the inner wall of the drying furnace 5, thereby processing the waste lithium iron phosphate adhered to the inner wall of the drying furnace 5 to avoid waste of resources.

[0028] A group of guide cylinders 24 are fixedly connected to the bottom of the drying furnace 5; a group of guide rods 25 are fixedly connected to the top of the base plate 1; a group of guide rods 25 are respectively slidably connected in a group of guide cylinders 24. When working, the set guide rods 25 can provide accurate linear motion for the drying furnace 5, reduce the risk of deviating from the predetermined route, and allow the drying furnace 5 to maintain the effect of vibrating up and down.

[0029] Working principle: The motor 6 drives the dispersion element to turn over and disperse the waste lithium iron phosphate in the drying furnace 5, so as to avoid the problem that the waste lithium iron phosphate is not heated evenly during the drying process, resulting in part of the lithium not being fully dried. This part of the lithium may be treated as waste in the subsequent treatment process, thereby reducing the recovery rate of lithium. The driving rod 10 drives the dispersion rod 12 to rotate, so that the waste lithium iron phosphate in the drying furnace 5 can be turned over by the provided dispersion rod 12, thereby increasing the drying surface of the waste lithium iron phosphate, and avoiding the central part of the waste lithium iron phosphate from being not dried sufficiently, thereby causing The difficulty of subsequent treatment increases, and the waste lithium iron phosphate is prevented from being piled up, which results in the inability of the drying furnace 5 to evenly heat the waste lithium iron phosphate during the drying process. Uneven drying may cause part of the lithium to be not fully dried, and this part of the lithium may be treated as waste in the subsequent treatment process, thereby reducing the recovery rate of lithium. The first gear is driven to rotate by the driving unit, thereby driving the rotating rod 13 to rotate, and the rotating block 14 connected to the rotating groove 9 through the first rotating shaft is driven to rotate, thereby driving the vibration block 8 to move up and down, so that the elastic force of the second spring The first spring is used to push the drying furnace 5, and cooperates with the first spring to make the drying furnace 5 vibrate up and down, so as to avoid the waste lithium iron phosphate being adhered by water stains and lithium dust during the drying process through the vibration, which may cause lithium agglomeration, which will affect the purity and recovery rate of lithium and increase the difficulty of subsequent treatment. The first bevel gear 16, the second bevel gear 17, the third bevel gear 20, the fourth bevel gear 21 and the elastic telescopic rod 19 are set, so that the drying furnace 5 can also transmit the rotating rod 13 when vibrating up and down, so that the driving rod 10 can drive the rotating rod 13 to rotate, so that the drying furnace 5 generates vibration. The vibration of the drying furnace 5 can prevent the dried waste lithium iron phosphate from agglomerating and affecting subsequent processing. The scraper plate 22 can be set to increase the rotation speed of the motor 6 after the drying is completed, so that the scraper plate 22 can be fixed by the third spring to the inner wall of the drying furnace 5 through the centrifugal force of the rotation of the drive rod 10, so that the waste lithium iron phosphate adhered to the inner wall of the drying furnace 5 can be processed to avoid waste of resources. The guide rod 25 can provide accurate linear motion for the drying furnace 5, reduce the risk of deviation from the predetermined route, and allow the drying furnace 5 to maintain the effect of vibrating up and down.

[0030] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A drying device for processing waste lithium iron phosphate and lithium immersion, characterized in that: The invention comprises a bottom plate (1); a pair of support plates (2) are fixedly connected to the top of the bottom plate (1); a sliding groove (3) is provided on the top of the pair of support plates (2); a sliding block (4) is fixedly connected to the bottom of the pair of sliding grooves (3) via a first spring, and the sliding block (4) is slidably connected in the sliding groove (3); a drying furnace (5) is fixedly connected between the opposite side walls of the pair of sliding blocks (4) via a group of first fixing rods; a motor (6) is fixedly connected to the top of the sliding block (4) via a connecting rod; a dispersing member is provided in the drying furnace (5); the dispersing member is used to disperse the accumulated waste lithium iron phosphate; a vibration cylinder (7) is fixedly connected to the outer circular wall of the bottom of the drying furnace (5); a vibration block (8) is fixedly connected to the vibration cylinder (7) via a second spring, and the vibration block (8) is slidably connected in the vibration cylinder (7); a rotating groove (9) is provided at the bottom of the vibration block (8); a driving assembly is provided in the rotating groove (9); the driving assembly is used to drive the rotating block (14) to rise and fall.

2. A drying equipment for waste lithium iron phosphate immersion processing according to claim 1, characterized in that: The dispersion member comprises a driving rod (10); the driving rod (10) is rotatably connected between opposite side walls of a pair of sliding blocks (4), and one end of the driving rod (10) passes through the side wall of the sliding block (4); one end of the driving rod (10) is drivingly connected to a motor (6); the drying furnace (5) is rotatably connected to the driving rod (10) through a pair of rotating holes; a group of second fixing rods (11) are fixedly connected to the driving rod (10); and a dispersion rod (12) is fixedly connected between opposite side walls of the pair of second fixing rods (11).

3. A drying equipment for waste lithium iron phosphate immersion processing according to claim 2, characterized in that: The driving assembly comprises a linkage unit and a rotating rod (13); the rotating rod (13) is rotatably connected between opposite side walls of a pair of support plates (2), and one end of the rotating rod (13) penetrates the side wall of the support plate (2); a rotating block (14) is rotatably connected to the rotating rod (13); the other end of the rotating block (14) is rotatably connected to the rotating groove (9) via a first rotating shaft; an L-shaped plate (15) is fixedly connected to the side wall of the support plate (2), and one end of the rotating rod (13) is rotatably connected to a vertical side wall of the L-shaped plate (15) and penetrates the vertical side wall of the L-shaped plate (15); a first bevel gear (16) is fixedly connected to the rotating rod (13); and the linkage unit is used to drive the first bevel gear (16) to rotate.

4. A drying device for processing waste lithium iron phosphate for lithium immersion according to claim 3, characterized in that: The driving assembly comprises a second bevel gear (17); the second bevel gear (17) is fixedly connected to the driving rod (10); a rotating ring (18) is fixedly connected to the outer circular wall at the bottom of the motor (6) via an L-shaped rod; an elastic telescopic rod (19) is rotatably connected to the inner wall of the rotating ring (18); a third bevel gear (20) is fixedly connected to the top of the elastic telescopic rod (19); the second bevel gear (17) and the third bevel gear (20) are meshingly connected; the telescopic end of the elastic telescopic rod (19) is rotatably connected to the lateral top of the L-shaped plate (15), and the telescopic end of the elastic telescopic rod (19) passes through the lateral bottom of the L-shaped plate (15); the telescopic end of the elastic telescopic rod (19) is fixedly connected to a fourth bevel gear (21); the first bevel gear (16) and the fourth bevel gear (21) are meshingly connected to each other.

5. A drying device for waste lithium iron phosphate leaching processing according to claim 4, characterized in that: The side wall of the dispersion rod (12) is fixedly connected to a scraper plate (22) via a group of third springs; a pair of opposite side walls of the second fixing rods (11) are provided with sliding grooves (23), and the two sides of the scraper plate (22) are respectively slidably connected in the pair of sliding grooves (23).

6. A drying device for waste lithium iron phosphate leaching according to claim 5, characterized in that: A group of guide cylinders (24) are fixedly connected to the bottom of the drying furnace (5); a group of guide rods (25) are fixedly connected to the top of the bottom plate (1); and a group of guide rods (25) are respectively slidably connected in a group of guide cylinders (24).

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