Lithium battery cell disintegrating slag recycling and drying equipment

Abstract

The utility model relates to the technical field of battery drying, in particular to lithium battery cell disintegrating slag recycling and drying equipment. The water filtering device comprises a shell, an inner water filtering barrel capable of bearing and heating materials is arranged on the shell, the inner water filtering barrel is arranged in an inclined mode and can rotate around the axis of the inner water filtering barrel, and a material inlet and a material outlet are formed by an inclined upper end opening and an inclined lower end opening of the inner water filtering barrel respectively. A shoveling plate which extends towards the inner cavity of the inner water filtering cylinder is arranged at the material inlet, a gap is formed between the shoveling plate and the wall of the inner cavity, and the gap between the shoveling plate and the wall of the inner cavity of the inner water filtering cylinder is gradually reduced in the material conveying direction. The slag drying device can efficiently and uniformly realize the slag drying operation.

Description

A lithium battery cell residue recycling and drying equipment Technical Field

[0001] This utility model relates to the field of battery drying technology, specifically a lithium battery cell residue recycling and drying equipment. Background Technology

[0002] The recycling of lithium battery residue can reduce environmental pollution from heavy metals and electrolytes, and also realizes the recycling of rare resources, thus possessing high economic value. In lithium battery residue recycling operations, drying of the residue is often required, as described in the texts of Chinese Patent Publication No. CN221005718U (titled "A Lithium Slag Drying Device") and Chinese Patent Publication No. CN112320781A (titled "A Method for Regenerating Iron Phosphate from Lithium Iron Phosphate Waste Lithium Extraction Residue").

[0003] As described in the text of Chinese Patent Publication No. CN221005718U entitled "A Lithium Slag Drying Device," the slag is first pre-dried with hot air, then crushed and dried a second time with hot air. While this method improves the drying effect by crushing the slag again, the heat is primarily applied to the surface of the slag. As the slag accumulates, a large amount of moisture settles at the bottom of the pile due to gravity. This process often requires a considerable amount of time to effectively transfer moisture to the bottom of the pile, resulting in uneven drying and low drying efficiency, which urgently needs to be addressed. Summary of the Invention

[0004] In order to avoid and overcome the technical problems existing in the prior art, this utility model provides a lithium battery cell residue recycling and drying equipment, which can efficiently and uniformly achieve the drying operation of the residue.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A lithium battery cell residue recycling and drying device includes a shell with an inner filter cylinder mounted on the shell to carry and heat the material. The inner filter cylinder is inclined and can rotate around its own axis. The inclined upper and lower openings of the inner filter cylinder form the material inlet and outlet, respectively. A lifting plate extending into the inner cavity of the inner filter cylinder with a gap between it and the inner cavity wall is arranged at the material inlet. Along the material conveying direction, the gap between the lifting plate and the inner cavity wall of the inner filter cylinder gradually decreases. The rotation of the inner filter cylinder enables centrifugal dehydration of the material. Furthermore, the gradually decreasing gap between the lifting plate and the inner cavity wall of the inner filter cylinder ensures that the lifting plate gradually scrapes away the material from the surface to the deeper layers as the material moves from the material inlet to the material outlet, achieving layered drying and improving the uniformity of material drying.

[0007] As a further aspect of this invention: the overall shape of the lifting plate is a smoothly connected stepped structure. The lifting plate includes a rotating section mounted on the housing and an extension section extending into the inner cavity of the inner filter cylinder. The rotating section and the extension section are connected by an arc-shaped transition section. The rotating section is coaxial with the inner filter cylinder and driven by a power source, so that the rotation direction of the lifting plate is opposite to the rotation direction of the inner filter cylinder. This increases the frequency of the lifting plate scraping away material from the inner filter cylinder, resulting in better drying effect and higher drying uniformity for the same drying time.

[0008] As a further improvement of this invention: the power source includes a drive shaft rotatably mounted on the housing, a driving gear coaxially fixed on the drive shaft, and a driven gear coaxially fixed on the inner filter cylinder, meshing with the driving gear; a belt drive assembly for driving the rotary section to rotate is mounted on the drive shaft, and a motor with an output shaft connected to the belt drive assembly or the drive shaft is mounted on the housing. This achieves synchronous counter-rotation of the lifter plate and the inner filter cylinder driven by a single motor, reducing cost and space requirements.

[0009] As a further improvement of this invention: an outer baffle is fixed to the shell, coaxially arranged outside the inner filter cylinder. The inner filter cylinder is rotatably fitted onto the outer baffle, and a water-guiding gap for drainage is provided between the outer baffle and the inner filter cylinder. This reduces the heating range during the drying process. Simultaneously, the water-guiding gap allows for directional drainage of water, preventing splashing caused by centrifugal force.

[0010] As a further improvement of this invention, a water guide strip is provided at the lower part of the water guide gap. The water guide strip is fixed to the inner bottom of the outer baffle cylinder parallel to its axial direction. This prevents the water flowing centrifugally to both sides of the water guide strip from colliding directly. Instead, the water impacts the water guide strip, reducing splashing caused by the impact of water flowing in opposite directions on both sides and the back-and-forth oscillation of the water flow at the inner bottom of the outer baffle cylinder, thus achieving precise water flow guidance.

[0011] As a further improvement of this invention: an exhaust fan is installed on the housing, and the air inlet of the exhaust fan is connected to the water guide gap and the inner cavity of the inner filter cylinder. This is used to quickly discharge the moisture generated during drying from the inner filter cylinder and the water guide gap.

[0012] As a further improvement of this invention: the inner filter cylinder heats the material via a drying and heating module on the shell. This drying and heating module is a radio frequency (RF) heater, and its output point points towards the water guide gap and the inner cavity of the inner filter cylinder. The RF heater's heating method allows energy to act directly on the material's interior, resulting in higher efficiency than traditional conductive heating methods such as hot air and heating wires, and further improving the uniformity of heating and drying.

[0013] As a further improvement of this utility model: the inner filter cylinder is distributed within the inner cavity of the shell, and the upper part of the shell has a feed hopper arranged vertically in the feeding direction. A guide arc plate is arranged below the feed hopper, with its axis inclined and the lower inclined end pointing towards the material inlet. The inner filter cylinder being built into the inner cavity of the shell prevents water splashing during centrifugation. The vertical arrangement of the feed hopper, combined with the design of the guide arc plate, allows the feeding mechanism to simply add material to the inlet of the feed hopper without needing to extend into the inner filter cylinder, thus providing technical support for simplifying the design of the feeding mechanism.

[0014] As a further improvement of this invention: the shell is provided with a discharge port, and the material outlet points towards the discharge port. This allows the material discharged from the material outlet to be directly discharged outside the shell, preventing it from accumulating inside the shell and adding further processing steps to the discharge process.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Centrifugal dewatering of materials is achieved through the rotation of the inner filter cylinder. Furthermore, the lifting plates effectively remove material adhering to the inner filter cylinder due to centrifugal force, preventing continuous accumulation on the inner wall. Additionally, the layout where the gap between the lifting plates and the inner wall gradually decreases along the material conveying direction ensures that the lifting plates gradually scrape material from the surface to the deeper layers as it moves from the material inlet to the outlet, achieving layered drying and improving the uniformity of drying. Simultaneously, in actual implementation, the initial feeding process may lead to significant material accumulation at the material inlet. The larger gap between the lifting plates and the inner wall at the material inlet ensures that the lifting plates can scrape off surface material while preventing excessive material from being scraped off at the inlet, which could cause a large amount of material to move rapidly to the outlet and result in insufficient drying time.

[0017] 2. The lifting plate adopts a rotating motion around the axis of the inner filter cylinder, and the rotating section and the inner filter cylinder rotate in opposite directions to each other, which increases the frequency of the lifting plate scraping the material in the inner filter cylinder, resulting in better drying effect and higher drying uniformity under the same drying time.

[0018] In addition, during the rotation of the lifting plate and the inner filter cylinder, the lifting plate is located in a higher area inside the inner cavity of the inner filter cylinder. In this state, while the lifting plate scrapes away the material inside the inner filter cylinder, the material scraped away by the lifting plate will generate a motion of being lifted up and then automatically falling down, which further makes the material contact with the hot air more uniform and improves the uniformity of the material drying process.

[0019] 3. The gear structure and belt drive assembly are used to drive the rotation of the inner filter cylinder and the lifter plate respectively, thereby realizing the synchronous reverse rotation of the lifter plate and the inner filter cylinder driven by a single motor, which reduces cost and space occupation.

[0020] 4. The outer baffle reduces the heating range during the drying process. At the same time, the water guide gap can also achieve directional water discharge and prevent water splashing caused by centrifugal force.

[0021] 5. A water guide strip is provided at the lower part of the water guide gap. The water guide strip is fixed to the bottom of the inner side of the outer baffle tube parallel to the axis of the outer baffle tube. This makes the water separated by centrifugation to both sides of the water guide strip not collide directly, but impact the water guide strip. This reduces the splashing caused by the impact of water flowing in opposite directions on both sides and the back-and-forth swinging of the water flow at the bottom of the inner side of the outer baffle tube, thus achieving precise water flow guidance. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the internal structure of the shell in this utility model.

[0023] Figure 2 is a schematic diagram of the structure of this utility model.

[0024] Figure 3 is a cross-sectional view of the inner filter cylinder and the outer baffle cylinder in this utility model.

[0025] In the diagram: 10. Shell; 11. Feed hopper; 12. Guide arc plate; 13. Drive shaft; 131. Drive gear; 132. Belt drive assembly; 14. Discharge port; 20. Drying and heating module; 30. Exhaust fan; 40. Motor; 50. Inner filter cylinder; 51. Driven gear; 60. Outer baffle; 61. Water guide strip; 70. Lifting plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] For ease of understanding, the specific structure and working method of this utility model are further described below with reference to the accompanying drawings:

[0028] The specific structure of this utility model is shown in Figures 1-3. Its main structure includes a shell 10, on which an inner filter cylinder 50 capable of carrying and heating materials is provided. The inner filter cylinder 50 is arranged at an inclination and can rotate around its own axis. The inclined upper opening and the inclined lower opening of the inner filter cylinder 50 respectively constitute the material inlet and the material outlet. A lifting plate 70 is arranged at the material inlet, extending into the inner cavity of the inner filter cylinder 50 and having a gap between it and the inner cavity wall. Along the material conveying direction, the gap between the lifting plate 70 and the inner cavity wall of the inner filter cylinder 50 gradually decreases.

[0029] During operation, the battery cell fragments enter the inclined upper part of the inner filter cylinder 50 through the material inlet. As the inner filter cylinder 50 rotates, the battery cells undergo centrifugal dehydration during the drying process, accelerating the drying efficiency of the deep water inside the battery cell fragments. Furthermore, due to the inclined arrangement of the inner filter cylinder 50, the material gradually moves towards the material outlet during centrifugal motion within the inner filter cylinder 50, achieving gradual automatic discharge during the drying process. In addition, the lifting plates 70 are used to scrape away material adhering to the inner filter cylinder 50 due to centrifugal force, preventing continuous accumulation of material on the inner wall of the inner filter cylinder 50. Furthermore, the layout where the gap between the lifting plates 70 and the inner wall of the inner filter cylinder 50 gradually decreases along the material conveying direction ensures that the lifting plates 70 gradually scrape away material from the surface to the depths as the material moves from the material inlet to the material outlet, achieving layered drying and improving the uniformity of material drying. In addition, during actual implementation, the initial feeding process may cause a large accumulation of material at the material inlet. The large gap between the lifting plate 70 at the material inlet and the inner wall of the inner filter cylinder 50 ensures that the lifting plate 70 can scrape off the surface material, while also preventing excessive material from being scraped off at the material inlet, which would cause a large amount of material to move quickly to the material outlet and thus result in insufficient material drying time.

[0030] Furthermore, as shown in Figure 3, the overall shape of the lifting plate 70 is a smoothly connected stepped structure. The lifting plate 70 includes a rotating section mounted on the housing 10 and an extension section extending into the inner cavity of the inner filter cylinder 50. The rotating section and the extension section are connected by an arc-shaped transition section. The rotating section is coaxial with the inner filter cylinder 50 and is driven by a power source, so that the rotation direction of the lifting plate 70 is opposite to the rotation direction of the inner filter cylinder 50. The lifting plate 70 adopts a rotational movement around the axis of the inner filter cylinder 50, and by utilizing the opposite rotation between the rotating section and the inner filter cylinder 50, the frequency of the lifting plate 70 scraping away the material inside the inner filter cylinder 50 is increased, resulting in better drying effect and higher drying uniformity for the same drying time.

[0031] It is worth mentioning that during the rotation of the lifting plate 70 and the inner filter cylinder 50, the lifting plate 70 is located in a higher area inside the inner cavity of the inner filter cylinder 50. In this state, while the lifting plate 70 scrapes away the material inside the inner filter cylinder 50, the material scraped away by the lifting plate 70 will generate a motion of being lifted up and then automatically falling down, which further makes the material contact with the hot air more uniform and improves the uniformity of the material drying process.

[0032] Based on the above, as shown in Figure 1, the power source includes a drive shaft 13 that is rotatably fitted on the housing 10, a drive gear 131 that is coaxially fixed on the drive shaft 13, and a driven gear 51 that meshes with the drive gear 131 that is coaxially fixed on the inner filter cylinder 50; a belt drive assembly 132 that drives the rotary section to rotate is installed on the drive shaft 13, and a motor 40 whose output shaft is connected to the belt drive assembly 132 or the drive shaft 13 is installed on the housing 10. During operation, whether the motor 40 drives the belt drive assembly 132 or the drive shaft 13 to rotate, the drive shaft 13 and the belt drive assembly 132 can rotate synchronously in the same direction. That is, the rotation direction of the rotating section of the lifting plate 70 is the same as the rotation direction of the output shaft of the motor 40. The inner filter cylinder 50 rotates by the meshing of its driven gear 51 with the driving gear 131 on the drive shaft 13. Thus, the rotation direction of the inner filter cylinder 50 is opposite to that of the output shaft of the motor 40. This achieves synchronous reverse rotation of the lifting plate 70 and the inner filter cylinder 50 driven by a single motor 40, reducing cost and space occupation. Of course, in actual implementation, the belt drive assembly 132 can also be omitted, and two motors 40 can be used to drive the lifting plate 70 and the drive shaft 13 to rotate respectively.

[0033] Specifically, the belt drive assembly 132 is a common structure in the prior art that connects a belt to two drive pulleys. That is, drive pulleys are coaxially fixed at both the drive shaft 13 and the rotation shaft of the lifting plate 70, and the two drive pulleys are connected by a belt. Of course, in actual implementation, a chain drive structure can also be used.

[0034] Based on the above, as shown in Figures 1 and 3, an outer baffle 60 is fixed on the housing 10, coaxially arranged outside the inner filter cylinder 50. The inner filter cylinder 50 is rotatably fitted onto the outer baffle 60, and a water-guiding gap for drainage is provided between the outer baffle 60 and the inner filter cylinder 50. The outer baffle 60 reduces the heating range during the drying process. At the same time, the water-guiding gap also enables directional drainage of water, preventing splashing caused by centrifugal force.

[0035] Furthermore, as shown in Figure 3, a water guide strip 61 is provided at the lower part of the water guide gap. The water guide strip 61 is fixed to the bottom of the inner side of the outer baffle 60 parallel to the axis of the outer baffle 60. This ensures that the water separated and centrifugally directed to both sides of the water guide strip 61 will not collide directly, but will impact the water guide strip 61. This reduces the splashing caused by the impact of water flowing in opposite directions on both sides and the back-and-forth swinging of the water flow at the bottom of the inner side of the outer baffle 60, thus achieving precise water flow guidance.

[0036] Based on the above, as shown in Figures 1 and 2, a blower 30 is installed on the housing 10. The air inlet of the blower 30 is connected to the water guide gap and the inner cavity of the inner water filter 50. This allows for the rapid discharge of water vapor during the drying process, preventing excessive water vapor from causing the material to become damp again.

[0037] Furthermore, as shown in Figure 1, the inner filter cylinder 50 heats the material via a drying and heating module 20 on the housing 10. The drying and heating module 20 is an RF heater, and its output point points towards the water guide gap and the inner cavity of the inner filter cylinder 50. This RF heater's heating method allows energy to act directly on the material's interior, resulting in higher efficiency than traditional conductive heating methods such as hot air and heating wires, and further improving the uniformity of heating and drying.

[0038] Based on the above, as shown in Figures 1 and 2, the inner filter cylinder 50 is distributed within the inner cavity of the housing 10. The upper part of the housing 10 has a feed hopper 11 arranged vertically in the feeding direction. Below the feed hopper 11 is a guide arc plate 12, whose axis is inclined, with its lower inclined end pointing towards the material inlet. The inner filter cylinder 50 is built into the inner cavity of the housing 10 to prevent water splashing during centrifugation. The vertical arrangement of the feed hopper 11, combined with the design of the guide arc plate 12, allows the feeding mechanism to simply place the material into the inlet of the feed hopper 11, without needing to extend it into the inner filter cylinder 50, thus providing technical support for simplifying the design of the feeding mechanism.

[0039] In addition, as shown in Figures 1 and 2, the housing 10 is provided with a discharge port 14, and the material outlet points to the discharge port 14, so that the material discharged from the material outlet is directly discharged outside the housing 10 and will not accumulate inside the housing 10, thus adding to the discharge process.

[0040] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0042] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A lithium battery cell residue recycling and drying equipment, characterized in that, Includes a shell (10), on which is provided an inner filter cylinder (50) that can carry and heat materials. The inner filter cylinder (50) is arranged at an inclination and can rotate around its own axis. The inclined upper opening and the inclined lower opening of the inner filter cylinder (50) respectively constitute the material inlet and the material outlet. A lifting plate (70) is arranged at the material inlet, extending into the inner cavity of the inner filter cylinder (50) and having a gap between it and the inner cavity wall. Along the material conveying direction, the gap between the lifting plate (70) and the inner cavity wall of the inner filter cylinder (50) gradually decreases.

2. The lithium battery cell residue recycling and drying equipment according to claim 1, characterized in that, The overall shape of the lifting plate (70) is a smoothly connected stepped shape. The lifting plate (70) includes a rotating section installed on the housing (10) and an extension section extending into the inner cavity of the inner filter cylinder (50). The rotating section and the extension section are connected to each other by an arc-shaped transition section. The rotating section is coaxial with the inner filter cylinder (50) and driven by a power source so that the rotation direction of the lifting plate (70) is opposite to the rotation direction of the inner filter cylinder (50).

3. The lithium battery cell residue recycling and drying equipment according to claim 2, characterized in that, The power source includes a drive shaft (13) that rotates on the housing (10), a drive gear (131) that is coaxially fixed on the drive shaft (13), and a driven gear (51) that meshes with the drive gear (131) that is coaxially fixed on the inner filter cylinder (50); a belt drive assembly (132) that drives the rotary section to rotate is installed on the drive shaft (13), and a motor (40) whose output shaft is connected to the belt drive assembly (132) or the drive shaft (13) is installed on the housing (10).

4. A lithium battery cell residue recycling and drying equipment according to claim 1, 2, or 3, characterized in that, An outer baffle (60) is fixed on the housing (10) and is coaxially arranged on the outside of the inner filter cylinder (50). The inner filter cylinder (50) is rotatably fitted on the outer baffle (60), and there is a water-guiding gap between the outer baffle (60) and the inner filter cylinder (50) for drainage.

5. The lithium battery cell residue recycling and drying equipment according to claim 4, characterized in that, A water guide strip (61) is provided at the lower part of the water guide gap. The water guide strip (61) is fixed to the bottom of the inner side of the outer baffle (60) in a direction parallel to the axis of the outer baffle (60).

6. The lithium battery cell residue recycling and drying equipment according to claim 4, characterized in that, A blower (30) is installed on the housing (10), and the air inlet of the blower (30) is connected to the water guide gap and the inner cavity of the inner filter cylinder (50).

7. The lithium battery cell residue recycling and drying equipment according to claim 4, characterized in that, The inner filter cylinder (50) heats the material by a drying and heating module (20) on the shell (10). The drying and heating module (20) is a radio frequency heater, and the output end of the radio frequency heater points to the water guide gap and the inner cavity of the inner filter cylinder (50).

8. A lithium battery cell residue recycling and drying equipment according to claim 1, 2, or 3, characterized in that, The inner filter cylinder (50) is distributed in the inner cavity of the shell (10). The upper part of the shell (10) has a feed hopper (11) arranged vertically in the feeding direction. A guide arc plate (12) is arranged below the feed hopper (11). The axis of the guide arc plate (12) is arranged at an inclination, and the inclination of the lower end of the guide arc plate (12) points to the material inlet.

9. A lithium battery cell residue recycling and drying equipment according to claim 8, characterized in that, The housing (10) is provided with a discharge port (14), and the material outlet points to the discharge port (14).

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