Waste lithium battery electrode crushing and grading recycling equipment

Abstract

This utility model relates to the technical field of lithium battery recycling devices, specifically a device for crushing and grading waste lithium battery electrode sheets. It includes a recycling box with a feeding hopper at the top. Two crushing rollers are rotatably connected between the left and right sides of the inner wall of the recycling box, near the top. A grading component is located in the lower middle part of the recycling box. The grading component includes two side plates, a first screen plate between the two side plates near the top, and a second screen plate between the two side plates near the bottom. A drive component for driving the grading component to move left and right is located on the left side of the recycling box. This waste lithium battery electrode sheet crushing and grading recycling device, through the eccentric transmission design of the drive component, converts the rotational motion into the horizontal reciprocating motion of the grading component, replacing the traditional vibrator. This significantly reduces the overall vibration amplitude of the device, avoids component loosening or wear caused by high-frequency vibration, and thus extends the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium battery recycling devices, specifically a device for crushing and classifying waste lithium battery electrode sheets for recycling. Background Technology

[0002] Lithium-ion batteries are batteries that use lithium metal or lithium compounds as electrode materials. Due to their high energy density, long lifespan, and high efficiency, they are widely used in portable electronic devices such as electric vehicles, smartphones, and laptops. With the increasing prevalence of lithium-ion batteries, the number of used lithium-ion batteries is increasing year by year, posing a potential pollution risk to the environment. Lithium-ion batteries contain precious metals such as lithium, cobalt, and nickel. If these resources are not recycled, they will be wasted and may have a serious impact on the environment. Therefore, developing efficient recycling technologies for used lithium-ion battery electrodes is particularly important. By effectively recovering the valuable components from lithium-ion batteries, resource recycling can be achieved, reducing the environmental burden.

[0003] Patent CN213529052U discloses a lithium battery cell electrode crushing and separation device, including a housing, a crushing mechanism, an electromagnet, and a hammer crusher. The crushing mechanism is located below the opening of the housing, and a conveyor belt is provided below the crushing mechanism. The electromagnet is located above the end of the conveyor belt away from the crushing mechanism. The top of the electromagnet is fixedly connected to one end of a connecting rod, and the other end of the connecting rod is fixedly connected to the shaft of a rotating motor. The rotating motor is fixedly installed at the top of the housing. Several stirring rods are provided between the conveyor belt and the electromagnet, and the two ends of the stirring rods are rotatably connected to the two side walls of the housing. The hammer crusher is located below the feed inlet. Below the hammer crusher, a first filter screen, a second filter screen, and a guide plate are arranged in a descending order of height. This lithium battery cell electrode crushing and separation device integrates crushing and separation, and classifies and recycles various resources, especially more fully recovering magnetic metal resources in lithium batteries.

[0004] The existing technology described above separates the pulverized lithium battery electrode sheets using a first filter, a second filter, and a guide plate, achieving integrated crushing and separation. However, this technology requires vibrators at the bottom of the first filter, the second filter, and the guide plate during separation, which leads to significant vibration in the entire device and affects its lifespan. In view of these shortcomings, we propose a waste lithium battery electrode sheet crushing and grading recycling device, aiming to reduce the impact of vibration. Utility Model Content

[0005] The purpose of this invention is to provide a device for crushing and classifying waste lithium battery electrode sheets for recycling, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A waste lithium battery electrode crushing and grading recycling device includes a recycling box. The top of the recycling box is equipped with a feeding hopper for feeding waste lithium battery electrodes to be processed. Two crushing rollers are rotatably connected between the left and right sides of the inner wall of the recycling box and near the top. They crush the electrodes by meshing with each other. The left side of the recycling box is equipped with a first motor for driving one of the crushing rollers to rotate. An external power supply and controller are connected to the motor to provide power to the crushing roller. The right ends of the rotating shafts of the two crushing rollers are coaxially connected with gears. The two gears mesh to drive the synchronous reverse rotation of the two crushing rollers. The lower middle part of the recycling box is equipped with a grading component, which realizes multi-stage screening of materials through reciprocating motion. The grading component includes two side plates arranged symmetrically to the left and right as a support frame for the grading component. A first screen plate with a larger screening hole size is provided between the two side plates and near the top, which is used to separate coarse particles. A second screen plate with a smaller screening hole size is provided between the two side plates and near the bottom, which is used to separate medium particles. A drive component for driving the grading component to move left and right is provided on the left side of the recycling box. The rotational motion is converted into the reciprocating motion of the grading component through eccentric transmission.

[0007] Preferably, a guide hopper is provided in the middle of the inside of the recycling box. The guide hopper is located between the first screen plate and the crushing roller, guiding the crushed material to fall into the grading component.

[0008] Preferably, the sieve hole size of the first sieve plate is larger than that of the second sieve plate, the output end of the first sieve plate is set to the rear to discharge coarse particles, and the output end of the second sieve plate is set to the front to discharge medium particles.

[0009] Preferably, guide rods are provided on opposite sides of the two side plates near the top and bottom ends, which cooperate with the annular seat to restrict the movement trajectory of the grading component. A movable rod is provided in the middle of the left side of the left side plate, which connects the drive component and the grading component to transmit reciprocating motion.

[0010] Preferably, both the guide rod and the movable rod are provided with an annular seat on their outer sides. The annular seat is disposed through the side of the recycling box to support the guide rod and the movable rod. The inner wall of the annular seat is provided with a plurality of rectangular grooves arranged in an annular array. Rollers are rotatably connected in the rectangular grooves to reduce the frictional resistance of the guide rod and the movable rod through rolling contact.

[0011] Preferably, the drive assembly includes a fixed horizontal plate fixedly connected to the left side of the recycling bin. A second motor is located at the top of the fixed horizontal plate near the left side, connected to an external power supply and controller to provide power to the drive assembly. The output shaft of the second motor is coaxially connected to a rotating disk, which converts the rotational motion into reciprocating motion through an eccentrically arranged protrusion. A protrusion is located at the top of the rotating disk near its outer edge. A connecting rod is rotatably connected to the outer wall of the protrusion through a bearing. The end of the connecting rod away from the protrusion is rotatably connected to the left end of the movable rod, converting the rotational motion of the rotating disk into the horizontal reciprocating motion of the grading assembly.

[0012] Preferably, the recycling box has rectangular openings on both the front and rear sides for the output ends of the first and second screen plates to pass through and discharge materials of different particle sizes. The output end of the first screen plate passes through the rear rectangular opening to the outside, and the output end of the second screen plate passes through the front rectangular opening to the outside.

[0013] Preferably, the bottom of both the left and right sides of the recycling box is provided with a U-shaped opening, and a collection box is placed at the bottom of the inside of the recycling box to collect fine particulate materials that cannot be separated by the screen plate. The collection box passes through the U-shaped opening to facilitate the removal and placement of the collection box.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This waste lithium battery electrode crushing and grading recycling device, through the eccentric transmission design of the drive component, converts the rotational motion into the horizontal reciprocating motion of the grading component, replacing the traditional vibrator, significantly reducing the overall vibration amplitude of the device, avoiding component loosening or wear caused by high-frequency vibration, thereby extending the service life of the equipment.

[0015] 2. This waste lithium battery electrode crushing and grading recycling device uses the reciprocating motion of grading components combined with sieve plates of different apertures to achieve three-stage separation of materials, improve the recovery rate and classification accuracy, and reduce resource waste.

[0016] 3. In this waste lithium battery electrode crushing and grading recycling device, the guide rod and the movable rod cooperate with the roller and the rectangular groove in the annular seat to convert sliding friction into rolling friction, reduce the resistance when the grading component reciprocates, reduce component wear, and improve operational stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is a partial cross-sectional structural diagram of the present invention; Figure 4This is a schematic diagram of the hierarchical component structure in this utility model; Figure 5 This is a schematic diagram of the annular seat structure in this utility model; Figure 6 This is a schematic diagram of the drive component structure in this utility model; In the diagram: 100, Recycling box; 101, Rectangular opening; 102, U-shaped opening; 200, Feeding hopper; 300, Crushing roller; 400, First motor; 500, Gear; 600, Guide hopper; 700, Grading assembly; 710, Side plate; 720, First sieve plate; 730, Second sieve plate; 740, Guide rod; 750, Movable rod; 760, Annular seat; 761, Rectangular groove; 762, Roller; 800, Drive assembly; 810, Fixed horizontal plate; 820, Second motor; 830, Rotating disk; 840, Protruding column; 850, Connecting rod; 900, Collection box. Detailed Implementation

[0018] 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.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Please see Figures 1-6 This utility model provides a technical solution: A waste lithium battery electrode crushing and grading recycling device includes a recycling box 100. The top of the recycling box 100 is equipped with a feeding hopper 200 for feeding waste lithium battery electrodes to be processed. Two crushing rollers 300 are rotatably connected between the left and right sides of the inner wall of the recycling box 100 and near the top. They crush the electrodes by meshing with each other. The left side of the recycling box 100 is equipped with a first motor 400 for driving one of the crushing rollers 300 to rotate. An external power supply and controller are connected to provide power to the crushing roller 300. The right ends of the rotating shafts of the two crushing rollers 300 are coaxially connected with gears 500. The two gears 500 mesh and drive, and the synchronous reverse rotation of the two crushing rollers 300 is achieved through meshing. The lower middle part of the recycling box 100 is equipped with a grading component 700, which realizes multi-stage screening of materials through reciprocating motion. The grading component 700 includes two side plates 710 arranged symmetrically to the left and right as a support frame for the grading component 700. A first screen plate 720 with a larger screening hole size is provided between the two side plates 710 and near the top, which is used to separate coarse particles. A second screen plate 730 with a smaller screening hole size is provided between the two side plates 710 and near the bottom, which is used to separate medium particles. A drive component 800 for driving the grading component 700 to move left and right is provided on the left side of the recycling box 100. The rotational motion is converted into the reciprocating motion of the grading component 700 through eccentric transmission.

[0021] In this embodiment, a guide hopper 600 is provided in the middle of the inside of the recycling box 100. The guide hopper 600 is located between the first screen plate 720 and the crushing roller 300, guiding the crushed material to fall into the grading component 700.

[0022] Specifically, the sieve hole size of the first sieve plate 720 is larger than that of the second sieve plate 730. The output end of the first sieve plate 720 is set to the rear to discharge coarse particles, and the output end of the second sieve plate 730 is set to the front to discharge medium particles.

[0023] Furthermore, guide rods 740 are provided on the opposite sides of the two side plates 710 near the upper and lower ends, which cooperate with the annular seat 760 to restrict the movement trajectory of the grading component 700. A movable rod 750 is provided in the middle of the left side of the left side plate 710, which connects the drive component 800 and the grading component 700 to transmit reciprocating motion.

[0024] Furthermore, both the guide rod 740 and the movable rod 750 are provided with annular seats 760 on their outer sides. The annular seats 760 are provided through the side of the recycling box 100 to support the guide rod 740 and the movable rod 750. The inner wall of the annular seats 760 is provided with a plurality of rectangular grooves 761 arranged in a ring array. Rollers 762 are rotatably connected in the rectangular grooves 761 to reduce the frictional resistance of the guide rod 740 and the movable rod 750 through rolling contact.

[0025] Furthermore, the drive assembly 800 includes a fixed horizontal plate 810 fixedly connected to the left side of the recycling bin 100. A second motor 820 is located at the top of the fixed horizontal plate 810 and near the left side. It is connected to an external power supply and controller to provide power to the drive assembly 800. The output shaft of the second motor 820 is coaxially connected to a rotating disk 830. The rotational motion is converted into reciprocating motion through an eccentrically set protrusion 840. The top of the rotating disk 830 and near the outer edge is provided with a protrusion 840. The outer wall of the protrusion 840 is rotatably connected to a connecting rod 850 through a bearing. The end of the connecting rod 850 away from the protrusion 840 is rotatably connected to the left end of the movable rod 750, converting the rotational motion of the rotating disk 830 into the horizontal reciprocating motion of the grading assembly 700.

[0026] Furthermore, rectangular openings 101 are provided on both the front and rear sides of the recycling box 100, through which the output ends of the first screen plate 720 and the second screen plate 730 pass to discharge materials of different particle sizes. The output end of the first screen plate 720 passes through the rear rectangular opening 101 to the outside, and the output end of the second screen plate 730 passes through the front rectangular opening 101 to the outside.

[0027] Furthermore, U-shaped openings 102 are provided at the bottom of both sides of the recycling box 100. A collection box 900 is placed at the bottom inside the recycling box 100 to collect fine particulate materials that cannot be separated by the sieve plate. The collection box 900 passes through the U-shaped openings 102 to facilitate the loading and unloading of the collection box 900. In this embodiment, the waste lithium battery electrode crushing and grading recycling device first starts the first motor 400 to drive the crushing roller 300 to rotate, and then starts the second motor 820 of the drive assembly 800. The waste lithium battery electrodes are then fed into the recycling box 100 through the feeding hopper 200. The two crushing rollers 300 rotate synchronously in opposite directions through gear 500 to crush the electrodes. The crushed material falls into the guide hopper 600 and is guided and dispersed onto the first screen plate 720 of the grading assembly 700. The second motor 820 drives the rotating disk 830 to rotate, and the protrusion 840 on the rotating disk 830 drives the movable rod 7 through the connecting rod 850. The rotational motion is converted into the horizontal reciprocating motion of the grading component 700. The side plate 710 of the grading component 700 moves along a fixed trajectory with the cooperation of the guide rod 740 and the roller 762 of the annular seat 760, driving the first screen plate 720 and the second screen plate 730 to reciprocate and screen synchronously. The first screen plate 720 has a larger screening hole size, which discharges coarse particles, while the second screen plate 730 has a smaller screening hole size, which discharges medium particles. Fine particles that cannot be screened fall into the collection box 900 at the bottom of the recycling box 100. After screening, the fine particles are collected by taking out the collection box 900 through the U-shaped opening 102, realizing the three-level grading and recycling of waste lithium battery electrodes.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for crushing and classifying waste lithium battery electrode sheets, comprising a recycling box (100), characterized in that: The top of the recycling box (100) is provided with a feeding hopper (200). Two crushing rollers (300) are rotatably connected between the left and right sides of the inner wall of the recycling box (100) and near the top. The left side of the recycling box (100) is provided with a first motor (400) for driving one of the crushing rollers (300) to rotate. The right ends of the rotating shafts of the two crushing rollers (300) are coaxially connected with gears (500). The two gears (500) mesh and drive each other. The lower middle part of the inside of the recycling box (100) is provided with a grading component (700). The grading component (700) includes two side plates (710) arranged symmetrically on the left and right. A first screen plate (720) is provided between the two side plates (710) and near the top. A second screen plate (730) is provided between the two side plates (710) and near the bottom. The left side of the recycling box (100) is provided with a driving component (800) for driving the grading component (700) to move left and right.

2. The waste lithium battery electrode crushing and grading recycling device according to claim 1, characterized in that: The recycling box (100) has a guide hopper (600) in the middle, which is located between the first screen plate (720) and the crushing roller (300).

3. The waste lithium battery electrode crushing and grading recycling device according to claim 1, characterized in that: The sieving hole size of the first sieve plate (720) is larger than that of the second sieve plate (730). The output end of the first sieve plate (720) is set to the rear, and the output end of the second sieve plate (730) is set to the front.

4. The waste lithium battery electrode crushing and grading recycling device according to claim 1, characterized in that: Guide rods (740) are provided on the opposite sides of the two side plates (710) near the upper and lower ends, and a movable rod (750) is provided in the middle of the left side of the left side plate (710).

5. The waste lithium battery electrode crushing and grading recycling device according to claim 4, characterized in that: Both the guide rod (740) and the movable rod (750) are provided with annular seats (760) on their outer sides. The annular seats (760) are provided through the side of the recycling box (100). The inner wall of the annular seats (760) is provided with a plurality of rectangular grooves (761) arranged in a circular array. Rollers (762) are rotatably connected in the rectangular grooves (761).

6. The waste lithium battery electrode crushing and grading recycling device according to claim 5, characterized in that: The drive assembly (800) includes a fixed horizontal plate (810) fixedly connected to the left side of the recycling bin (100). A second motor (820) is provided at the top of the fixed horizontal plate (810) and near the left side. The output shaft of the second motor (820) is coaxially connected to a rotating disk (830). A protrusion (840) is provided at the top of the rotating disk (830) and near the outer edge. A connecting rod (850) is rotatably connected to the outer wall of the protrusion (840) through a bearing. The end of the connecting rod (850) away from the protrusion (840) is rotatably connected to the left end of the movable rod (750).

7. The waste lithium battery electrode crushing and grading recycling device according to claim 1, characterized in that: The recycling box (100) has rectangular openings (101) on both the front and rear sides. The output end of the first sieve plate (720) passes through the rear rectangular opening (101) to the outside, and the output end of the second sieve plate (730) passes through the front rectangular opening (101) to the outside.

8. The waste lithium battery electrode crushing and grading recycling device according to claim 1, characterized in that: The bottom of the recycling box (100) on both the left and right sides is provided with a U-shaped opening (102). A collection box (900) is placed at the bottom inside the recycling box (100), and the collection box (900) passes through the U-shaped opening (102).

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