Filter press for waste lithium battery treatment

Abstract

The utility model relates to the technical field of waste lithium battery processing, in particular to a filter press for waste lithium battery processing, which comprises a support frame, a pressing plate and a thrust plate are arranged on the inner wall of the support frame, a plurality of mounting frames are arranged in the support frame, and an auxiliary component comprises filter plates arranged in the mounting frames. A rotating plate and two locking grooves are arranged on the inner wall of the filter plate, two hole grooves are formed in the outer wall of the rotating plate, and activation buttons and locking blocks are arranged in the two hole grooves; a plurality of cavities are formed in one side of the rotating plate, electromagnets and protruding blocks are arranged in the multiple cavities, and magnetic plates are arranged at one ends of the protruding blocks. According to the filter plate, the rotatable auxiliary filter plate is mounted in the filter plate, the protruding block extending out of the auxiliary filter plate is in contact with the other filter plate when the auxiliary filter plate rotates, filter-pressed materials are scattered through the protruding block, internal residual liquid can flow out conveniently, residues are reduced, impurities attached to the filter plate are cleaned in an auxiliary mode by abutting against the filter plate, and the filter plate is convenient to clean. The dredging and filtering efficiency of the filter plate is effectively improved, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of waste lithium battery processing technology, specifically a filter press for waste lithium battery processing. Background Technology

[0002] Used lithium batteries refer to lithium batteries that have lost or largely lost their original electrochemical performance and can no longer be used. Used lithium batteries contain a large number of valuable metals and compounds, such as lithium, cobalt, nickel, manganese, copper, and aluminum, and have high recycling value. Through effective recycling processes, these valuable components can be extracted, enabling resource reuse and reducing dependence on primary mineral resources.

[0003] However, in the current technology for processing waste lithium batteries, the presence of many impurities in the waste material makes the filter cloth easily clogged by solid particles. This is especially true when processing materials containing a large number of fine particles, which significantly reduces the air permeability of the filter cloth. This not only reduces the filtration efficiency but also causes incomplete filtration, resulting in some liquid residue in the filter cake and waste. Utility Model Content

[0004] The purpose of this invention is to provide a filter press for processing waste lithium batteries, so as to solve the problems mentioned in the background art.

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

[0006] A filter press for processing waste lithium batteries includes a support frame. The inner wall of the support frame is provided with a pressing plate and a thrust plate. Multiple mounting frames are provided inside the support frame. An auxiliary component for improving the pressure effect during the filter press processing of waste lithium batteries is provided inside the mounting frame. The auxiliary component includes a filter plate disposed inside the mounting frame. The inner wall of the filter plate is provided with a rotating plate and two locking grooves. The outer wall of the rotating plate is provided with two slots. An activation button and a locking block are provided inside each of the two slots.

[0007] The rotating plate has multiple cavities on one side, and each cavity contains an electromagnet and a protrusion. A magnetic plate is provided at one end of each protrusion.

[0008] As a preferred embodiment of this utility model, multiple mounting brackets are arrayed between the pressure plate and the thrust plate, the filter plate is internally embedded and connected to the mounting brackets, and the rotating plate is located inside the filter plate and is rotatably connected to the inner wall of the filter plate.

[0009] As a preferred embodiment of this utility model, the two locking grooves are annularly distributed on both sides inside the filter plate, and the two holes are annularly distributed at both ends of the outer wall of the rotating plate, with the hole angle corresponding to the locking groove and communicating with each other when the hole and locking groove are matched.

[0010] As a preferred embodiment of this utility model, one end of the locking block is located in the slot and is slidably connected to the inner wall of the slot, while the other end extends into the locking groove on the inner wall of the filter plate. Both the locking block and the locking groove are arc-shaped structures, and the activation button is electrically connected to the electromagnet in the cavity.

[0011] As a preferred embodiment of this utility model, the plurality of cavity arrays are distributed on one side of the rotating plate and located in the central region of the rotating plate.

[0012] As a preferred embodiment of this utility model, the protrusion is located inside the cavity and is slidably connected to the inner wall of the cavity. The electromagnet is connected to the inner wall of the cavity by bolts and is magnetically connected to the magnetic plate at one end of the protrusion. The protrusion slides inside the cavity through the magnetic poles.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: Addressing the problems raised in the background art, this application employs an auxiliary component. By embedding a rotatable secondary filter plate inside the main filter plate, a filtration effect is achieved during the processing of waste lithium batteries using both the main and secondary filter plates. During the operation of the filter press, the secondary filter plate is periodically rotated within the filter plate. Simultaneously, the locking block and locking groove on the outer wall of the secondary filter plate cooperate with each other. During rotation, the locking block retracts into the secondary filter plate, simultaneously pressing the activation button. Pressing the activation button activates the electromagnet, causing it to move. The magnetic force drives the protrusion to extend outward from the cavity and contact another filter plate on one side. Simultaneously, the rotation of the secondary filter plate, through the protrusion, disperses the material squeezed between the filter plates, allowing residual liquid to flow out. Furthermore, the contact between the protrusion and the other filter plate assists in cleaning impurities adhering to the filter plate, ensuring both the unblocking and filtration effects of the filter plates.

[0014] This invention installs a rotatable secondary filter plate inside the filter plate. When the secondary filter plate rotates, protrusions extend from its interior and contact another filter plate. The protrusions disperse the material being filtered, facilitating the outflow of residual liquid and reducing residue. Furthermore, the contact with the filter plate helps clean impurities adhering to it, effectively improving the unblocking and filtration efficiency of the filter plate and extending the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is a structural diagram of the filter plate of this utility model;

[0017] Figure 3 This is a front sectional view of the filter plate of this utility model;

[0018] Figure 4 This is an enlarged view of part A of the present invention;

[0019] Figure 5 This is a cross-sectional view of the internal cavity of the rotating plate of this utility model.

[0020] In the diagram: 1. Support frame; 2. Pressure plate; 3. Thrust plate; 4. Mounting frame; 5. Filter plate; 501. Locking groove; 6. Rotating plate; 7. Hole groove; 701. Activation button; 702. Locking block; 8. Cavity; 801. Electromagnet; 802. Protrusion; 9. Magnetic plate. Detailed Implementation

[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Example

[0022] Please see Figure 1-5 This utility model provides a technical solution: a filter press for processing waste lithium batteries, including a support frame 1. The inner wall of the support frame 1 is provided with a pressing plate 2 and a thrust plate 3. Multiple mounting brackets 4 are provided inside the support frame 1 for mounting and positioning filter plates 5. Each mounting bracket 4 contains an auxiliary component for improving the pressure effect during the waste lithium battery filtration process. The auxiliary component includes filter plates 5 disposed inside the mounting brackets 4 for filtration of the slurry from the waste lithium batteries. The inner wall of the filter plates 5 is provided with a rotating plate 6 and two locking grooves 501. The rotating plate 6 acts as a secondary filter screen to assist the filter plates 5 in the filtration process. During filtration, the locking grooves 501 on the outside of the rotating plate 6 correspond to the locking grooves 501 inside the rotating plate 6. The outer wall of the rotating plate 6 is provided with two slots 7, each containing an activation button. 701 and locking block 702, when the locking groove 501 communicates with the hole groove 7, are pushed by spring to extend the locking block 702 out of the hole groove 7 and embed it into the locking groove 501 to support and lock the position and angle of the rotating plate 6. After initial filtration, the rotating plate 6 is controlled to rotate in the filter plate 5. At the same time, the pressure of rotation squeezes the locking block 702, causing the locking block 702 to retract into the hole groove 7 and activate the activation button 701. The activation button 701 triggers the change of the magnetic pole of the electromagnet 801, which repels the magnetic plate 9 and pushes the protrusion 802 out of the cavity 8 and into contact with another filter plate on one side. The pressure of the protrusion breaks up the filter cake produced by the material filtration, allowing the residual liquid inside to flow out. In addition, the rotation of the rotating plate 6 causes the protrusion 802 to scrape off the impurities attached to the inner wall of the filter plate 5, further purifying the surface of the filter plate 5, improving the unblocking and filtration efficiency of the filter plate 5, and extending the service life of the equipment.

[0023] The rotating plate 6 has multiple cavities 8 on one side, and each cavity 8 contains an electromagnet 801 and a protrusion 802. One end of the protrusion 802 is provided with a magnetic plate 9.

[0024] A filter press applies pressure to force liquid through the filter medium (filter plate 5), while solid particles are trapped on the filter plate 5, forming a filter cake. In the treatment of waste lithium batteries, the plate and frame filter press uses a hydraulic system to press the filter plate 5 together, forming a sealed filter chamber and increasing pressure to improve filtration efficiency.

[0025] In the process of treating waste lithium batteries, the positive and negative electrode powders or acid leaching residues of the waste lithium batteries are first mixed with water or other liquids in a certain proportion to form a slurry. The slurry is then sent to a leaching tank for acid leaching reaction. The slurry is then sent to the filter chamber of a filter press for filtration. The filtrate (a solution containing metal ions) after filtration is collected and sent to the next process.

[0026] In this embodiment, all electrical components are controlled by a conventional controller.

[0027] For an example, please refer to... Figure 1-5 Multiple mounting brackets 4 are arrayed between the clamping plate 2 and the thrust plate 3. The filter plate 5 is internally embedded and connected to the mounting brackets 4. The rotating plate 6 is located inside the filter plate 5 and is rotatably connected to the inner wall of the filter plate 5. Two locking grooves 501 are annularly distributed on both sides of the inside of the filter plate 5. Two holes 7 are annularly distributed at both ends of the outer wall of the rotating plate 6, and the angle of the holes 7 corresponds to that of the locking grooves 501. They communicate when the holes 7 and locking grooves 501 are matched. One end of the locking block 702 is located in the hole 7 and is slidably connected to the inner wall of the hole 7, and the other end extends... The locking block 702 is inserted into the locking groove 501 on the inner wall of the filter plate 5, and both the locking block 702 and the locking groove 501 are arc-shaped. The activation button 701 is electrically connected to the electromagnet 801 in the cavity 8. Multiple cavities 8 are arrayed on one side of the rotating plate 6 and located in the central area of ​​the rotating plate 6. The protrusion 802 is located in the cavity 8 and is slidably connected to the inner wall of the cavity 8. The electromagnet 801 is connected to the inner wall of the cavity 8 by bolts and is magnetically connected to the magnetic plate 9 at one end of the protrusion 802. The protrusion 802 slides inside the cavity 8 through the magnetic poles. In use, the slurry is first placed into the filter press and the mounting frame 4 is pushed close by the pressing plate 2 to filter the slurry. After the initial filtration, the rotating plate 6 is controlled by the central control center to rotate inside the filter plate 5. While rotating, the locking block 702 is squeezed, causing the locking block 702 to retract into the groove 7 and apply pressure to the activation button 701. This controls the change of the magnetic pole of the electromagnet 801, which, together with the magnetic plate 9, pushes the protrusion 802 out of the cavity 8 and abuts against the filter plate 5 on the other side. The pressure of the protrusion, combined with the rotation, breaks up the filter cake, allowing the residual liquid inside to flow out. At the same time, the rotating plate 6 rotates, causing the protrusion 802 to scrape off the impurities attached to the inner wall of the filter plate 5.

[0028] The working process of this utility model is as follows: When in use, the slurry is first put into the filter press and the mounting frame 4 is pushed close by the pressing plate 2 to filter the slurry. After the initial filtration, the central control center controls the rotating plate 6 to rotate in the filter plate 5. While rotating, the locking block 702 is squeezed, causing the locking block 702 to retract into the groove 7 and apply pressure to the activation button 701. This controls the change of the magnetic pole of the electromagnet 801, which, together with the magnetic plate 9, pushes the protrusion 802 out of the cavity 8 and abuts against the filter plate 5 on the other side. The pressure of the protrusion, combined with the rotation, breaks up the filter cake, allowing the residual liquid inside to flow out. At the same time, the rotating plate 6 rotates, causing the protrusion 802 to scrape off the impurities attached to the inner wall of the filter plate 5. This invention installs a rotatable secondary filter plate inside the filter plate. When the secondary filter plate rotates, protrusions extend from its interior and contact another filter plate. The protrusions disperse the material being filtered, facilitating the outflow of residual liquid and reducing residue. Furthermore, the contact with the filter plate helps clean impurities adhering to it, effectively improving the unblocking and filtration efficiency of the filter plate and extending the service life of the equipment.

[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 filter press for processing waste lithium batteries, comprising a support frame (1), wherein a pressing plate (2) and a thrust plate (3) are provided on the inner wall of the support frame (1), and a plurality of mounting frames (4) are provided inside the support frame (1), wherein the mounting frames (4) are provided with auxiliary components for improving the pressure effect during the filter press processing of waste lithium batteries, characterized in that: The auxiliary component includes a filter plate (5) disposed inside the mounting bracket (4). The inner wall of the filter plate (5) is provided with a rotating plate (6) and two locking grooves (501). The outer wall of the rotating plate (6) is provided with two holes (7). An activation button (701) and a locking block (702) are provided inside each of the two holes (7). The rotating plate (6) has multiple cavities (8) on one side, and each cavity (8) contains an electromagnet (801) and a protrusion (802). A magnetic plate (9) is provided at one end of the protrusion (802).

2. A filter press for processing waste lithium batteries according to claim 1, characterized in that: Multiple mounting brackets (4) are arrayed between the clamping plate (2) and the thrust plate (3). The filter plate (5) is embedded and connected to the mounting bracket (4). The rotating plate (6) is located inside the filter plate (5) and is rotatably connected to the inner wall of the filter plate (5).

3. A filter press for processing waste lithium batteries according to claim 1, characterized in that: The two locking grooves (501) are distributed in annularly on both sides inside the filter plate (5), and the two holes (7) are distributed in annularly on both ends of the outer wall of the rotating plate (6). The angle of the holes (7) corresponds to the locking grooves (501), and they communicate when the holes (7) and locking grooves (501) are matched.

4. A filter press for processing waste lithium batteries according to claim 1, characterized in that: One end of the locking block (702) is located in the groove (7) and is slidably connected to the inner wall of the groove (7). The other end extends into the locking groove (501) on the inner wall of the filter plate (5). Both the locking block (702) and the locking groove (501) are arc-shaped structures. The activation button (701) is electrically connected to the electromagnet (801) in the cavity (8).

5. A filter press for processing waste lithium batteries according to claim 1, characterized in that: Multiple cavities (8) are arrayed on one side of the rotating plate (6) and located in the central region of the rotating plate (6).

6. A filter press for processing waste lithium batteries according to claim 1, characterized in that: The protrusion (802) is located inside the cavity (8) and is slidably connected to the inner wall of the cavity (8). The electromagnet (801) is connected to the inner wall of the cavity (8) by bolts and is magnetically connected to the magnetic plate (9) at one end of the protrusion (802). The protrusion (802) slides inside the cavity (8) through the magnetic poles.

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