A high-efficiency lead grid separation vibrating screen and a high-efficiency lead grid separation and purification system

Abstract

This utility model relates to the field of waste lead-acid battery recycling and processing technology, and particularly to a high-efficiency lead grid separation vibrating screen and a high-efficiency lead grid separation and purification system. This application provides a high-efficiency lead grid separation vibrating screen, the technical solution of which is as follows: it includes a base and a screen box disposed on the base; the screen box includes a screen frame, a vibrating screen plate assembly disposed inside the screen frame, and a vibrating motor connected to the screen frame; the vibrating motor drives the vibrating screen plate assembly to vibrate through the screen frame; the two ends of the screen frame are respectively provided with a feed end and a discharge end; a break is provided between the end of the vibrating screen plate assembly and the discharge end, and a receiving hopper for receiving lead grids is provided below the break, as well as a high-pressure blower unit for aligning with the end of the vibrating screen plate assembly. This solution has the advantages of improving lead grid separation efficiency, reducing impurity content, extending equipment service life, increasing lead recovery rate, and improving economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of waste lead-acid battery recycling and treatment technology, and in particular to a high-efficiency lead grid separation vibrating screen and a high-efficiency lead grid separation and purification system. Background Technology

[0002] In the waste lead-acid battery processing, the lead grids separated by the dismantling system are typically processed into lead ingots using a cryogenic casting system. Lead grids have a melting point of approximately 320 degrees Celsius, and their main component is lead (about 95%), with small amounts of alloying elements such as calcium, tin, and antimony. However, in actual processing, the lead grids often contain impurities such as battery film or separator paper, which can severely impact the casting process. When the impurity content in the lead grids is too high, the following problems arise during casting: First, these impurities will burn at temperatures above 200 degrees Celsius, releasing a large amount of heat. This uncontrollable heat can sometimes cause temperatures to rise above 500 degrees Celsius, far exceeding the melting point of lead. Excessively high temperatures can severely damage the cryogenic casting system equipment, even burning it out and rendering it unusable, significantly shortening the equipment's lifespan. Second, excessively high temperatures can cause some lead to form lead ash, significantly reducing the lead recovery rate.

[0003] Furthermore, the current market price of lead is approximately 16,500 yuan per ton. A 1% reduction in losses would save 165 yuan per ton of lead. For a plant with a daily processing capacity of 200 tons, this translates to a daily saving of 33,000 yuan and a monthly saving of 990,000 yuan (based on 10 months of production). Therefore, reducing the impurity content in lead grids is crucial for improving lead recovery rates and economic efficiency.

[0004] Currently, despite systematic sorting, a small amount of lead grid sheets remain mixed in with the lead grids, and these sheets also contain lead grids. How to effectively separate the lead grids from the sheets while simultaneously extracting the sheets has become a pressing technical problem. This not only affects the improvement of lead recovery rates but also directly impacts the lifespan of the equipment and production efficiency.

[0005] Existing separation technologies are insufficient to meet the demands for efficient and precise separation. Traditional screening methods often fail to completely remove impurities from lead grids, leading to the aforementioned problems during subsequent casting processes. Furthermore, simple screening may result in valuable lead grids being separated along with impurities, causing resource waste. Therefore, developing a new type of equipment and system capable of efficiently separating lead grids and impurities is of great significance for improving the economic efficiency and environmental impact of waste lead-acid battery recycling.

[0006] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0007] To address the aforementioned problems, the present invention aims to provide a high-efficiency lead grid separation vibrating screen and a high-efficiency lead grid separation and purification system, which has the advantages of improving lead grid separation efficiency, reducing impurity content, extending equipment service life, increasing lead recovery rate, and improving economic benefits.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] This application provides a high-efficiency lead grid separation vibrating screen, the technical solution of which is as follows: it includes a base and a screen box disposed on the base; the screen box includes a screen frame, a vibrating screen plate assembly disposed inside the screen frame, and a vibrating motor connected to the screen frame; the vibrating motor drives the vibrating screen plate assembly to vibrate through the screen frame; the two ends of the screen frame are respectively provided with a feed end and a discharge end; a break is provided between the end of the vibrating screen plate assembly and the discharge end, and a receiving hopper for receiving lead grids is provided below the break, as well as a high-pressure blower unit for aligning with the end of the vibrating screen plate assembly.

[0010] Furthermore, this application also proposes that the vibrating screen plate assembly includes a first screen plate, a second screen plate, and a third screen plate arranged sequentially from the feed end to the discharge end; the screen hole diameters of the first screen plate, the second screen plate, and the third screen plate gradually increase.

[0011] Furthermore, this application also proposes that the aperture of the first sieve plate is 5 mm, the aperture of the second sieve plate is 10 mm, and the aperture of the third sieve plate is 12 mm.

[0012] Furthermore, this application also proposes that the first screen plate, the second screen plate, and the third screen plate are all inclined upwards from the feed to the discharge.

[0013] Furthermore, this application also proposes that the sieve frame includes wall panels and multiple round tube beams connecting the two side wall panels.

[0014] Furthermore, this application also proposes that the high-pressure blower unit includes a volute-shaped air duct and a blower assembly for supplying high-pressure airflow into the volute-shaped air duct; the volute-shaped air duct is disposed below the end of the vibrating screen plate assembly and its axial direction extends along the width direction of the vibrating screen plate assembly, and a strip-shaped air outlet is provided on the volute-shaped air duct along its axial direction.

[0015] Furthermore, this application also proposes that the volute-shaped air duct has a volute chamber inside and an air duct communicating with the volute chamber; the strip-shaped air outlet is set at the end of the air duct, and the diameter of the air duct gradually decreases from the volute chamber to the strip-shaped air outlet.

[0016] Furthermore, this application also proposes a high-efficiency separation vibrating screen including the aforementioned lead grid.

[0017] As described above, this application provides a high-efficiency lead grid separation vibrating screen and a high-efficiency lead grid separation and purification system, including a base and a screen box disposed on the base; the screen box includes a screen frame, a vibrating screen plate assembly disposed inside the screen frame, and a vibrating motor connected to the screen frame; the vibrating motor drives the vibrating screen plate assembly to vibrate through the screen frame; the two ends of the screen frame are respectively provided with a feed end and a discharge end; a break is provided between the end of the vibrating screen plate assembly and the discharge end, and a receiving hopper for receiving lead grids is provided below the break, as well as a high-pressure blower unit for aligning with the end of the vibrating screen plate assembly. Through the multi-stage screening of the vibrating screen plate assembly and the blowing action of the high-pressure blower unit, high-efficiency separation of lead grids and impurities is achieved, which has the advantages of improving lead grid separation efficiency, reducing impurity content, extending equipment service life, improving lead recovery rate, and economic benefits. Attached Figure Description

[0018] Figure 1 This is a side view of a high-efficiency lead grid separating vibrating screen provided in this application.

[0019] Figure 2 This is a schematic diagram of the rear end face of a high-efficiency lead grid separating vibrating screen provided in this application.

[0020] Figure 3 This is a top view of a high-efficiency lead grid separating vibrating screen provided in this application.

[0021] Figure 4 This is a cross-sectional schematic diagram of a high-efficiency lead grid separating vibrating screen provided in this application.

[0022] Figure 5 This is a schematic diagram of a volute-shaped air duct. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] 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", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Example 1:

[0029] like Figures 1-5As shown, this embodiment proposes a high-efficiency vibrating screen for separating lead grids, including a base 1 and a screen box 2 disposed on the base 1. The screen box 2 includes a screen frame 21, a vibrating screen plate assembly disposed inside the screen frame 21, and a vibrating motor 22 connected to the screen frame 21. The vibrating motor 22 drives the vibrating screen plate assembly to vibrate through the screen frame 21. The screen frame 21 has a feed end 23 and a discharge end 24 respectively disposed at both ends. A break 25 is provided between the end of the vibrating screen plate assembly and the discharge end 24. Below the break 25, a receiving hopper 26 for receiving lead grids is disposed, and a high-pressure blower assembly for aligning with the end of the vibrating screen plate assembly is disposed. The vibrating screen plate assembly vibrates under the drive of the vibrating motor 22, so that the mixture of lead grid material and separator paper film can be dispersed on the screen plate, and the lead grids with smaller apertures can be screened and separated on the screen plate. The high-pressure blower unit directs high-pressure airflow towards the end of the vibrating screen plate assembly. At the break point 25, there is a mixture of large pieces of lead grid and separator paper film that have not been separated by the screen plate. The high-pressure airflow blows the separator paper film out from the end of the screen plate, while the large pieces of lead grid are collected through the receiving hopper 26 below the break point 25. This technical solution achieves efficient separation of lead grid by using a vibrating screen plate assembly and a high-pressure blower unit. The vibrating screen plate assembly vibrates under the drive of the vibrating motor 22, which disperses the mixture of lead grid material and separator paper film on the screen plate and also separates the smaller-aperture lead grid material. Finally, the high-pressure blower unit directs high-pressure airflow towards the end of the vibrating screen plate assembly. At the break point 25, there is a mixture of large pieces of lead grid and separator paper film that have not been separated by the screen plate. The high-pressure airflow blows the separator paper film out from the end of the screen plate, while the large pieces of lead grid are collected through the receiving hopper 26 below the break point 25. This design effectively solves the problem of separating lead grids from impurities such as film, thus improving lead recovery rate.

[0030] Furthermore, this application proposes that the vibrating screen plate assembly includes a first screen plate 27, a second screen plate 28, and a third screen plate 29 arranged sequentially from the feed end 23 to the discharge end 24. The screen aperture diameters of the first screen plate 27, the second screen plate 28, and the third screen plate 29 gradually increase. The technical solution of this application, through its design of gradually increasing screen aperture diameter, effectively solves the technical problem of low separation efficiency caused by unreasonable screen plate aperture design in high-efficiency lead grid separation vibrating screens. Compared with the prior art, the technical solution of this application can more effectively separate lead grids from impurities, improve lead recovery rate, and reduce equipment blockage and maintenance costs.

[0031] Specifically, the first sieve plate 27 has an aperture of 5 mm, the second sieve plate 28 has an aperture of 10 mm, and the third sieve plate 29 has an aperture of 12 mm. This design allows lead grids of different sizes to pass through sieve plates of different apertures sequentially, ensuring that smaller lead grid particles are first screened by the first sieve plate 27, medium-sized lead grid particles by the second sieve plate 28, and larger lead grid particles by the third sieve plate 29. This graded screening method improves the efficiency of lead grid separation, ensuring that lead grids of different sizes can be effectively separated, thereby improving the recovery rate and separation effect of lead grids. Specifically, the first sieve plate 27 has an aperture of 5 mm, suitable for screening smaller lead grid particles. The second sieve plate 28 has an aperture of 10 mm, suitable for screening medium-sized lead grid particles. The third sieve plate 29 has an aperture of 12 mm, suitable for screening larger lead grid particles. Through this graded screening method, lead grid particles can be effectively separated and screened according to their size, avoiding the mixing of lead grid particles of different sizes, and improving the separation accuracy and efficiency. As a preferred embodiment, the aperture of the sieve plate can be adjusted according to actual needs to accommodate lead grid particles of different sizes. For example, in some cases, a smaller aperture may be needed to screen finer lead grid particles, or a larger aperture may be needed to screen larger lead grid particles. By adjusting the aperture of the sieve plate, the separation effect of the lead grid can be further optimized. Thus, this application achieves efficient classification and screening of lead grids by setting sieve plates with different apertures. Compared with the prior art, this design not only improves the efficiency of lead grid separation but also ensures that lead grids of different sizes can be effectively separated, thereby improving the recovery rate and separation effect of lead grids. This classification and screening method avoids the mixing of lead grid particles, reduces the impurity content in subsequent processing, and further improves the lead recovery rate. The lead grid particles screened by the first sieve plate 27, the second sieve plate 28, and the third sieve plate 29 are not shown in the figure.

[0032] Furthermore, this application proposes that the first screen plate 27, the second screen plate 28, and the third screen plate 29 are all inclined upwards from the feed to the discharge. The inclination angle can be adjusted according to the characteristics of the material and the screening requirements. For example, for heavier materials, the inclination angle can be appropriately increased to improve screening efficiency. Specifically, this inclined design helps the material to vibrate and be conveyed on the screen plate, improving separation efficiency, making the material more evenly distributed during the screening process, reducing material accumulation and clogging, thereby improving screening effect and separation accuracy. Through this inclined design, impurities such as lead grids and film can be separated more effectively, improving the efficiency and stability of the overall separation system.

[0033] like Figure 4As shown, the screen frame 21 includes wall panels 211 and multiple circular tube beams 212 connecting the two side wall panels 211. The wall panels 211, as the main supporting structure of the screen frame 21, effectively resist the forces generated by the vibrating screen assembly during vibration. The circular tube beams 212 connect the two side wall panels 211, further enhancing the rigidity of the screen frame 21 and preventing deformation or breakage during vibration. This structural design ensures the stability and durability of the screen frame 21 during long-term operation, thereby supporting the efficient vibration of the vibrating screen assembly and the smooth separation of materials. Specifically, the wall panels 211 can be made of high-strength steel to ensure their load-bearing capacity and vibration resistance. The circular tube beams 212 can be made of the same steel as the wall panels 211, or other high-strength materials, such as aluminum alloy or composite materials, to further reduce the overall weight of the screen frame 21 while maintaining its rigidity. The number and arrangement of the circular tube beams 212 can be adjusted according to the size of the screen frame 21 and the weight of the vibrating screen assembly to ensure the stability of the screen frame 21 under different working conditions. For example, for larger screen frames 21, the number of circular tube beams 212 can be increased and arranged in a cross pattern to enhance the overall rigidity of the screen frame 21. As a preferred embodiment, the circular tube beams 212 can be fixed to the wall plate 211 by welding or bolting. Welding provides higher connection strength and is suitable for high-vibration-intensity conditions. Bolting facilitates the disassembly and maintenance of the screen frame 21 and is suitable for equipment requiring frequent maintenance. Furthermore, the cross-sectional shape of the circular tube beams 212 can be adjusted according to actual needs, such as using circular, square, or rectangular sections to meet different strength and rigidity requirements. Therefore, the technical solution of this application, through the combination of the wall plate 211 and the circular tube beams 212, significantly enhances the overall stability and strength of the screen frame 21. The wall plate 211, as the main supporting structure, can effectively resist the forces generated by the vibrating screen plate assembly during vibration, while the circular tube beams 212 further enhance the rigidity of the screen frame 21, preventing deformation or breakage during vibration. This structural design not only ensures the stability and durability of the screen frame 21 during long-term operation, but also supports the efficient vibration of the vibrating screen plate assembly and the smooth separation of materials. Compared with the prior art, the technical solution of this application has higher stability and strength in the structural design of the screen frame 21, which can effectively cope with high-intensity vibration conditions, extend the service life of the equipment, and improve the efficiency of material separation.

[0034] In the specific design, the high-pressure blower unit includes a volute-shaped duct 3 and a blower assembly that supplies high-pressure airflow into the volute-shaped duct 3. The volute-shaped duct 3 is located below the end of the vibrating screen plate assembly, extending axially along the width of the assembly. A strip-shaped air outlet 31, also axially aligned, is provided on the volute-shaped duct 3. The design of the volute-shaped duct 3 ensures that the high-pressure airflow acts evenly and concentratedly on the end of the vibrating screen plate assembly, thereby enhancing the separation effect between the lead grid and the film. The design of the strip-shaped air outlet 31 further optimizes the airflow distribution, covering the entire end of the vibrating screen plate assembly and improving separation efficiency. Through the design of the volute-shaped duct 3 and the blower assembly, the high-pressure blower unit generates a uniform and concentrated high-pressure airflow. The position and orientation of the volute-shaped duct 3 ensure that the airflow effectively acts on the end of the vibrating screen plate assembly, thereby enhancing the separation effect between the lead grid and the film. The design of the strip-shaped air outlet 31 further optimizes the airflow distribution, covering the entire end of the vibrating screen plate assembly and improving separation efficiency. This design not only solves the technical problem of separating the lead grid from the film, but also improves the overall system efficiency and lead recovery rate.

[0035] Furthermore, the volute-shaped duct 3 contains a volute chamber 32 and an air duct 33 communicating with the volute chamber 32. A strip-shaped air outlet 31 is located at the end of the air duct 33, and the diameter of the air duct 33 gradually decreases from the volute chamber 32 to the strip-shaped air outlet 31. The design of the volute chamber 32 allows for initial uniform distribution of airflow before entering the air duct 33, while the gradual reduction in the diameter of the air duct 33 causes the airflow to gradually accelerate during flow, thus forming a uniform and concentrated airflow distribution at the strip-shaped air outlet 31. This design can be implemented through a smooth transition of the inner wall of the air duct 33 and linear or non-linear variations in the diameter of the air duct 33 to adapt to different airflow velocities and distribution requirements. Specifically, the volute chamber 32 can be designed as circular or elliptical to optimize the initial airflow distribution. The diameter variation of the air duct 33 can be achieved by adjusting the inclination angle of the air duct 33 wall or by adopting a segmented design, where the diameter of each segment of the air duct 33 is different to achieve the best acceleration effect. In addition, the design of the strip-shaped air outlet 31 may include multiple small holes or slits to further evenly distribute the airflow.

[0036] Example 2:

[0037] This embodiment also proposes a high-efficiency lead grid separation and purification system, which includes the high-efficiency lead grid separation vibrating screen described in Example 1. This vibrating screen effectively separates the lead grid from the film through the vibration of the vibrating screen plate assembly and the action of the high-pressure blower unit. The vibrating screen plate assembly progressively filters the lead through screen plates of different aperture sizes, and the high-pressure blower unit further removes residual film through precisely controlled airflow, thereby improving the purity and recovery rate of the lead grid.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A high-efficiency lead grid separating vibrating screen, comprising a base (1) and a screen box (2) disposed on the base (1); the screen box (2) comprises a screen frame (21), a vibrating screen plate assembly disposed inside the screen frame (21), and a vibrating motor (22) connected to the screen frame (21); the vibrating motor (22) drives the vibrating screen plate assembly to vibrate through the screen frame (21); the screen frame (21) is provided with a feed end (23) and a discharge end (24) at both ends; characterized in that: A break (25) is provided between the end of the vibrating screen plate group and the discharge end (24). Below the break (25) is a receiving hopper (26) for receiving the lead grid and a high-pressure blower group for aligning with the end of the vibrating screen plate group.

2. The high-efficiency lead grid separating vibrating screen according to claim 1, characterized in that: The vibrating screen plate assembly includes a first screen plate (27), a second screen plate (28), and a third screen plate (29) arranged sequentially from the feed end (23) to the discharge end (24); the screen hole diameters of the first screen plate (27), the second screen plate (28), and the third screen plate (29) gradually increase.

3. The high-efficiency lead grid separating vibrating screen according to claim 2, characterized in that: The aperture of the first sieve plate (27) is 5 mm, the aperture of the second sieve plate (28) is 10 mm, and the aperture of the third sieve plate (29) is 12 mm.

4. The high-efficiency lead grid separating vibrating screen according to claim 2, characterized in that: The first screen plate (27), the second screen plate (28) and the third screen plate (29) are all inclined upwards from the feed to the discharge.

5. The high-efficiency lead grid separating vibrating screen according to claim 1, characterized in that: The sieve frame (21) includes a wall panel (211) and multiple round tube beams (212) connecting the two side wall panels (211).

6. The high-efficiency lead grid separating vibrating screen according to claim 1, characterized in that: The high-pressure blower unit includes a volute-shaped air duct (3) and a blower assembly that supplies high-pressure airflow into the volute-shaped air duct (3); the volute-shaped air duct (3) is located below the end of the vibrating screen plate assembly and its axial direction extends along the width direction of the vibrating screen plate assembly, and the volute-shaped air duct (3) is provided with a strip-shaped air outlet (31) arranged along its axial direction.

7. The high-efficiency lead grid separating vibrating screen according to claim 6, characterized in that: The volute-shaped air duct (3) has a volute chamber (32) inside and an air duct (33) communicating with the volute chamber (32); the strip-shaped air outlet (31) is set at the end of the air duct (33), and the diameter of the air duct (33) gradually decreases from the volute chamber (32) to the strip-shaped air outlet (31).

8. A high-efficiency lead grid separation and purification system, characterized in that: The lead grid high-efficiency separation vibrating screen includes any one of claims 1 to 7.

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