A dust recovery device for recycling of waste lithium battery graphite negative electrode material

Abstract

The utility model relates to dust recovery technical field especially is a kind of dust recovery device for waste lithium battery graphite negative electrode material regeneration, including cyclone separator, cyclone separator is provided with recovery mechanism and is used for dust recovery, recovery mechanism includes: main component, including the cylinder of fixed in cyclone separator lower end, cylinder inner wall is fixed with ring stand, and ring stand upper end is installed with filter core between cyclone separator lower end;Opening and closing subassembly, including the valve body of fixed in ring stand lower end, and valve body is located the just below filter core, and several leaf plates are rotatably installed in valve body, and the outer end of leaf plate is fixed with support, and the upper end of several support is hinged with same connecting rod, and servo motor is installed in the outside of cylinder and is used to drive one of leaf plate rotation;Two-stage dust capture is realized by cyclone separation and filter core filtration, and continuous collection is realized by switching between double recovery tanks using rotatable discharge port, which guarantees the efficiency and continuity of the recovery process.

Description

Technical Field

[0001] This utility model relates to the field of dust recycling technology, specifically a dust recycling device for regenerating graphite anode materials from waste lithium batteries. Background Technology

[0002] Against the backdrop of promoting a green circular economy, the efficient recycling and resource utilization of waste lithium-ion batteries has become an important link in the sustainable development of the new energy industry chain. According to CN220194280U, a bag filter for electric furnace exhaust dust is disclosed. This technology includes a lower housing with two through holes on the top surface, two filter bags fixedly connected inside the holes, a fixing column fixedly connected to the top surface of the inner wall of the lower housing, and two sliding grooves on both sides of the fixing column, with two fixing rods slidably connected inside the two sliding grooves. The technology features the following advantages: "Through the cooperation of various components, the circular sleeve and brush bristles can initially clean the outer wall of the filter bag, while the air pipe and nozzle work together to spray air, further cleaning the filter bag. This two-step cleaning process effectively removes dust from the filter bag without damaging it, improving the cleaning efficiency and providing convenience for workers. Furthermore, through the cooperation of various components, the screw and sweeping blades help clean the dust inside the discharge shell, preventing dust accumulation and ensuring the cleanliness of the device, thus providing convenience for users." The existing recycling bins must be shut down for replacement once they are full of dust. This not only disrupts the continuity of production and reduces overall efficiency, but also increases the risk of dust leakage due to system pressure fluctuations and repeated opening and closing of the sealing interface during frequent start-ups and shutdowns. It cannot meet the stable operation requirements of continuous industrial production. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a dust collection device for the regeneration of graphite anode materials from waste lithium batteries. It collects dust through two stages of cyclone separation and filter filtration, and achieves continuous collection by switching between two recycling bins using a rotatable discharge port, ensuring the efficiency and continuity of the recycling process.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dust recovery device for regenerating graphite anode materials from waste lithium batteries, comprising a cyclone separator, wherein the cyclone separator is equipped with a recovery mechanism for dust recovery, the recovery mechanism comprising: The main component includes a cylinder fixed to the lower end of the cyclone separator, a ring frame fixed to the inner wall of the cylinder, and a filter element installed between the upper end of the ring frame and the lower end of the cyclone separator. The opening and closing assembly includes a valve body fixed to the lower end of the ring frame, with the valve body located directly below the filter element. Several blades are rotatably mounted inside the valve body, and support rods are fixed to the outer ends of the blades. The upper ends of the several support rods are pivotally connected to the same connecting rod. A servo motor is installed outside the cylinder to drive one of the blades to rotate.

[0005] Preferably, the main component further includes a material discharge port rotatably mounted at the lower end of the cylinder.

[0006] Preferably, a box is fixed to the bottom of the cylinder, and symmetrically arranged recycling bins are placed inside the box, with an inlet at the top of the recycling bin.

[0007] Preferably, the main component further includes a sealing ring fixed to the outer edge of the bottom of the discharge port.

[0008] Preferably, the main component also includes a door hinged to the front end of the box, and casters are installed at the four corners of the bottom of the box.

[0009] Preferably, the lower end of the discharge port is a semi-circular structure, and the inlet is a matching semi-circular structure. Beneficial effects

[0010] This invention provides a dust recovery device for regenerating graphite anode materials from waste lithium batteries. Compared with existing technologies, it has the following advantages: 1. The dust-laden airflow first enters the cyclone separator for primary separation, where most of the coarse particles are thrown against the wall and settle downwards under centrifugal force. Subsequently, the fine dust enters the filter element inside the lower cylinder for secondary fine filtration. The filter element traps the escaped fine powder, and the purified gas is discharged, while the captured dust falls into the valve body directly below. When discharge is required, a servo motor drives one of the blades to rotate, which in turn drives the connecting rod to rotate all the blades synchronously through the fixed support rod, causing the blades to change from a closed state to an open state, forming a discharge channel, allowing the accumulated dust to fall smoothly into the recovery box below. Through the controlled blade linkage opening and closing structure, the unloading process is sealed and automated, effectively preventing dust escape and air backflow during unloading.

[0011] 2. When it is necessary to discharge the collected dust, start the servo motor on the outside of the cylinder to drive one of the blades to rotate. Through the support rod fixed to it and the connecting rod connecting all the support rods, all the blades in the valve body will rotate synchronously, opening the unloading channel. The dust will then be discharged through the discharge port installed at the lower end of the cylinder. The lower end of the discharge port has a semi-circular structure, which can be rotated 180 degrees to accurately select and connect with the semi-circular inlet of one of the two recycling boxes symmetrically arranged in the lower box. The sealing ring on the outer edge of the bottom of the discharge port is deformed by pressure during the connection, ensuring that the interface is sealed and no dust escapes. When one recycling box is full, simply stop the discharge and rotate the discharge port 180 degrees to switch to the inlet of the other empty recycling box to achieve uninterrupted continuous operation. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the opening and closing component in this utility model; Figure 4 This is a schematic diagram of the structure of the recycling bin in this utility model; Figure 5 This is a schematic diagram of the structure of the cylindrical body of this utility model.

[0013] In the diagram: 1. Cyclone separator; 2. Recycling mechanism; 21. Main component; 211. Cylinder; 212. Ring frame; 213. Filter element; 214. Discharge port; 215. Sealing ring; 216. Housing; 217. Recycling box; 218. Inlet; 219. Door; 2110. Casters; 22. Opening and closing assembly; 221. Valve body; 222. Blade; 223. Support rod; 224. Connecting rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0015] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a dust recovery device for regenerating graphite anode materials from waste lithium batteries, comprising a cyclone separator 1, wherein a recovery mechanism 2 is provided on the cyclone separator 1 for dust recovery, and the recovery mechanism 2 includes: The main component 21 includes a cylinder 211 fixed to the lower end of the cyclone separator 1, a ring frame 212 fixed to the inner wall of the cylinder 211, and a filter element 213 installed between the upper end of the ring frame 212 and the lower end of the cyclone separator 1. The opening and closing assembly 22 includes a valve body 221 fixed to the lower end of the ring frame 212, and the valve body 221 is located directly below the filter element 213. Several blades 222 are rotatably installed inside the valve body 221. Support rods 223 are fixed to the outer ends of the blades 222. The upper ends of the several support rods 223 are pivotally connected to the same connecting rod 224. A servo motor is installed on the outside of the cylinder 211 and is used to drive one of the blades 222 to rotate.

[0016] In this embodiment, the dust-laden airflow first enters the cyclone separator 1 for primary separation, where most of the coarse particles are thrown against the wall and settle downwards under centrifugal force. Subsequently, the fine dust enters the filter element 213 inside the lower cylinder 211 for secondary fine filtration. The filter element 213 traps the escaped fine powder, and the purified gas is discharged, while the captured dust falls into the valve body 221 directly below it. When discharge is required, a servo motor drives one of the blades 222 to rotate, which drives the connecting rod 224 through the fixed support rod 223 to rotate all the blades 222 synchronously, so that the blades 222 change from the closed state to the open state, forming a discharge channel, and the accumulated dust can fall smoothly into the recovery box 217 below. Through the controlled blade 222 linkage opening and closing structure, the unloading process is sealed and automated, effectively preventing dust escape and air backflow during unloading.

[0017] Specifically, the main component 21 also includes a material discharge port 214 that is rotatably installed at the lower end of the cylinder 211.

[0018] In this embodiment, the discharge port 214 is a rotatable guide channel. When it needs to be switched, the discharge port 214 can be rotated so that it can be aligned with the inlet port 218 at the top of the two recycling bins 217 in different positions.

[0019] Specifically, a box 216 is fixed to the bottom of the cylinder 211, and symmetrically arranged recycling boxes 217 are placed inside the box 216. An inlet 218 is opened at the top of the recycling box 217.

[0020] In this embodiment, the dust discharged from the upper discharge port 214 can be unloaded by aligning the discharge port 214 with the upper inlet port 218 of the 217. When one recycling bin 217 is full, the discharge port 214 is rotated to align with the inlet port 218 of another empty recycling bin 217, thus achieving uninterrupted continuous collection. Full bins can be removed for processing, and empty bins can be put into use immediately. This avoids equipment downtime caused by a single recycling bin 217 being full, and improves the continuity of dust recycling operations and overall production efficiency.

[0021] Specifically, the main component 21 also includes a sealing ring 215 fixed to the bottom outer edge of the discharge port 214.

[0022] In this embodiment, when the discharge port 214 is rotated so that its lower outlet is aligned and fits with the inlet 218 of the target recycling box 217, the sealing ring 215 undergoes elastic deformation under the weight of the discharge port 214 and slight pressure, and is tightly pressed against the edge of the inlet 218, thereby forming a flexible sealing interface between the discharge port 214 and the recycling box 217 to prevent dust from overflowing.

[0023] Specifically, the main component 21 also includes a door 219 hinged to the front end of the box 216, and casters 2110 are installed at the four corners of the bottom of the box 216.

[0024] In this embodiment, when it is necessary to replace or empty the symmetrically arranged recycling bins 217 inside the box 216, the hinged box door 219 can be opened to directly perform storage and retrieval operations; the entire device can be easily moved and positioned at the work site by means of the universal wheels 2110 at the bottom.

[0025] Specifically, the lower end of the discharge port 214 has a semi-circular structure, and the feed port 218 has a matching semi-circular structure.

[0026] In this embodiment, the inlets 218 at the upper ends of the two symmetrically arranged recycling bins 217 are combined to form a complete circular opening, while the semi-circular structure at the lower end of the discharge port 214 is adapted to any one of the semi-circular inlets 218; so that the discharge port 214 only needs to rotate 180 degrees to switch between the semi-circular inlets 218 of the two recycling bins 217.

[0027] The working principle and usage process of this utility model are as follows: First, after the dust-laden airflow is generated in the regeneration process, it first enters the cyclone separator 1. Most of the coarse dust particles are initially separated and settled under the action of centrifugal force. Then, the airflow carrying fine dust enters the cylinder 211 fixed at the lower end of the cyclone separator 1 and passes through the filter element 213 installed on the ring frame 212 for secondary fine filtration. The purified gas is discharged, while the high-value graphite fine powder that is intercepted accumulates in the valve body 221 located at the bottom end of the ring frame 212 below the filter element 213. When the collected dust needs to be discharged, the servo motor outside the cylinder 211 is started, driving one of the blades 222 to rotate. Through the support rod 223 fixed to it and the connecting rod 224 connecting all the support rods 223, all the blades 222 inside the valve body 221 are rotated synchronously, opening the unloading channel. The dust is then discharged through the discharge port 214 installed at the lower end of the cylinder 211. The lower end of the discharge port 214 has a semi-circular structure, which can be rotated 180 degrees to accurately select and connect with the semi-circular inlet 218 of one of the two recycling boxes 217 symmetrically arranged in the lower box 216. The sealing ring 215 on the outer edge of the bottom of the discharge port 214 is deformed by pressure during the connection, ensuring that the interface is sealed and no dust escapes. When one recycling box 217 is full, it is only necessary to stop the discharge and rotate the discharge port 214 180 degrees to switch to the inlet 218 of the other empty recycling box 217 to achieve uninterrupted continuous operation.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust recycling device for regenerating graphite anode materials from waste lithium batteries, comprising a cyclone separator (1), characterized in that: The cyclone separator (1) is equipped with a recovery mechanism (2) for dust recovery. The recovery mechanism (2) includes: The main component (21) includes a cylinder (211) fixed to the lower end of the cyclone separator (1), a ring frame (212) fixed to the inner wall of the cylinder (211), and a filter element (213) installed between the upper end of the ring frame (212) and the lower end of the cyclone separator (1). The opening and closing assembly (22) includes a valve body (221) fixed to the lower end of the ring frame (212), and the valve body (221) is located directly below the filter element (213). Several blades (222) are rotatably installed inside the valve body (221). Support rods (223) are fixed to the outer ends of the blades (222). The upper ends of the several support rods (223) are pivotally connected to the same connecting rod (224). A servo motor is installed outside the cylinder (211) and is used to drive one of the blades (222) to rotate. The main body component (21) also includes a discharge port (214) rotatably installed at the lower end of the cylinder (211); the main body component (21) also includes a sealing ring (215) fixed to the outer edge of the bottom of the discharge port (214); the lower end of the discharge port (214) is a semi-circular structure, and the inlet (218) is a semi-circular structure adapted to it.

2. The dust recovery device for regenerating graphite anode materials from waste lithium batteries according to claim 1, characterized in that: The bottom of the cylinder (211) is fixed with a box (216), and symmetrically arranged recycling boxes (217) are placed inside the box (216). The upper end of the recycling box (217) is provided with an inlet (218).

3. The dust recovery device for regenerating graphite anode materials from waste lithium batteries according to claim 2, characterized in that: The main component (21) also includes a door (219) hinged to the front end of the box (216), and casters (2110) are installed at the four corners of the bottom of the box (216).

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