Complex lead-acid storage battery pre-crushing device

Abstract

The utility model discloses a pre-crushing device for a complex lead-acid storage battery, and relates to the technical field of lead-acid storage battery recovery, in particular to the pre-crushing device for the complex lead-acid storage battery, which comprises a support frame, a feed hopper, a crushing part, a screening part and a base station formed by pouring concrete members, a chute, a first conveying groove and a second conveying groove are respectively formed in the base table, the chute, the first conveying groove and the second conveying groove are sequentially arranged in the width direction of the base table, and the groove depths of the second conveying groove, the first conveying groove and the chute are sequentially increased; the structure of the upper-layer screening assembly and the lower-layer screening assembly is adopted, the screening assemblies are in the inclined state, and the crushed complex lead-acid storage battery materials can be efficiently screened. Compared with a single screening mode in the prior art, the two-stage screening design has the advantages that fibers in the crushed materials can be cleaned more thoroughly, and the situation that the fibers enter a subsequent crushing and sorting system to cause equipment faults is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of lead-acid battery recycling technology, specifically a complex lead-acid battery pre-crushing device. Background Technology

[0002] Due to the urgent need for resource recycling and environmental protection, the recycling and processing of complex lead-acid batteries is particularly important. Existing patent technology (patent number: 201510276082.7) provides a pre-crushing device for complex lead-acid batteries. This device, through the cooperation of components such as a vibrating feeder, crusher, and drum screen, achieves centralized treatment of electrolyte before sorting waste lead-acid batteries, effectively solving the environmental pollution problem caused by indiscriminate dumping of electrolyte and preventing electrolyte from entering the subsequent crushing and sorting system and causing corrosion to the equipment. At the same time, this device also has the advantages of simple structure and convenient operation. However, after in-depth research and practical application, it has been found that this existing technology still has some problems that urgently need to be solved.

[0003] Firstly, regarding fiber removal, while existing rotary drum screens have hook mechanisms at the discharge port, the fiber removal effect is not ideal when processing complex types of lead-acid batteries, such as maintenance-free batteries. Some fibers still enter the subsequent crushing and sorting system, leading to frequent equipment failures, severely impacting the reliability of the crushing and sorting system, limiting the application range of complex lead-acid battery sorting systems, and failing to meet the increasingly diverse recycling and processing needs of waste lead-acid batteries. Furthermore, existing technologies also have shortcomings in the conveying and collection systems for crushed materials. The design of chutes and conveying troughs is not optimized, leading to blockages and leaks during material transport, affecting production efficiency, and resulting in poor classification and collection of materials of different particle sizes. This fails to provide a good foundation for subsequent fine sorting, further limiting the efficiency and quality improvement of the entire recycling and processing system.

[0004] In summary, existing technologies have significant shortcomings in fiber cleaning, crusher stability, and material conveying and collection, and cannot meet the needs of the complex lead-acid battery recycling industry for efficient, environmentally friendly, and stable equipment. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a complex lead-acid battery pre-crushing device, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a complex lead-acid battery pre-crushing device, comprising a support frame, a feed hopper, a crushing component, a screening component, and a base constructed from concrete components. The base is provided with a chute, a first conveying chute, and a second conveying chute, arranged sequentially along the width of the base. The depths of the second conveying chute, the first conveying chute, and the chute increase sequentially, and they are interconnected. Conveying components are installed on the first and second conveying chutes of the base. The support frame... The feeding hopper, crushing component, and screening component are all fixedly installed on the support frame, which is mounted on a base platform and fixedly connected to the base platform. The feeding hopper, crushing component, and screening component are arranged sequentially from top to bottom, with the screening component located above the base platform. The screening component includes a feeding cylinder and two screening assemblies, which are arranged vertically inside the feeding cylinder and are in an inclined state. The upper edge of the screening assembly is hinged to the inner wall of the feeding cylinder. The lower edge of the upper screening assembly is located above the second conveying trough, and the lower edge of the lower screening assembly is located above the first conveying trough.

[0009] Optionally, a first annular groove and a second annular groove are respectively formed on the two side walls of the feeding cylinder. The screening assembly includes a screen plate, a shaft, and two sliding blocks. The upper edge of the screen plate is fixedly connected to the outer side wall of the shaft, and the two ends of the shaft are rotatably connected to the inner side wall of the feeding cylinder. The two sliding blocks are respectively fixedly installed on the lower two side edges of the screen plate, and the sliding blocks are located in the first annular groove or the second annular groove. The sliding blocks are slidably connected to the feeding cylinder through the first annular groove or the second annular groove. A spring is embedded and fixedly installed in the first annular groove or the second annular groove of the feeding cylinder, and the upper end of the spring abuts against the sliding block.

[0010] Optionally, the feed hopper includes a plate portion, an inclined portion, and a tube portion. The upper edge of the inclined portion is fixedly connected to the plate portion, and the lower edge of the inclined portion is fixedly connected to the upper edge of the tube portion. The four periphery of the plate portion is fixedly installed with the support frame.

[0011] Optionally, the crushing component includes a main support frame, an auxiliary support frame, and two crushing assemblies. The main support frame is fixedly installed on a support frame, and the auxiliary support frame is fixedly installed inside the main support frame. The crushing assembly includes a toothed roller, a large motor, and a large reducer. The large reducer and the large motor are both fixedly installed on the main support frame. The two ends of the toothed roller are rotatably installed on the auxiliary support frame. The power output shaft of the large motor is fixedly installed with the power input end of the large reducer, and the power output shaft of the large reducer is connected to one end of the toothed roller. The two toothed rollers are arranged horizontally parallel and rotate in opposite directions.

[0012] Optionally, the support frame includes four steel columns, multiple steel beams, and four sealing plates. The two ends of each steel beam are welded to two adjacent steel columns. The four steel columns and multiple steel beams are welded together to form a rectangular frame structure. The four sealing plates are fixedly installed on the four sides of the frame structure. The feed hopper, crushing component, and screening component are all fixedly installed inside the frame structure, and the feed hopper, crushing component, and screening component are connected vertically.

[0013] Optionally, the conveying component includes a first conveyor belt, a second conveyor belt, a driving roller, and a driven roller. The driving roller and the driven roller are rotatably mounted on a base. The driving roller is located on the first conveying trough and the second conveying trough, respectively, and the driven roller is located on the first conveying trough and the second conveying trough, respectively. The first conveyor belt is wound around the outer side wall of the driving roller and the driven roller, and the first conveyor belt is located in the first conveying trough. The second conveyor belt is wound around the outer side wall of the driving roller and the driven roller, and the second conveyor belt is located in the second conveying trough. The driving roller is connected to the driven roller through the first conveyor belt and the second conveyor belt.

[0014] Optionally, the conveying component further includes a small reducer and a small motor. The small reducer and the small motor are both fixedly mounted on the base. The power output end of the small motor is fixedly mounted to the power input end of the small reducer. The power output end of the small reducer is connected to one end of the drive roller.

[0015] (III) Beneficial Effects

[0016] This utility model provides a complex lead-acid battery pre-crushing device, which has the following beneficial effects:

[0017] 1. This complex lead-acid battery pre-crushing device features an innovatively designed screening component with a two-layer screening assembly positioned at an angle. This design enables efficient screening of the crushed complex lead-acid battery material. The upper screening assembly performs preliminary screening, effectively separating larger fragments and some fibers to the second conveying trough. The lower screening assembly then performs secondary fine screening, further separating smaller fragments and residual fibers to the first conveying trough. This two-stage screening design, compared to existing single-stage screening methods, more thoroughly removes fibers from the crushed material, effectively preventing fibers from entering the subsequent crushing and sorting system and causing equipment malfunctions. This significantly improves the reliability of the entire recycling process, reduces equipment maintenance frequency and costs, extends equipment lifespan, and meets increasingly stringent environmental and production efficiency requirements.

[0018] 2. This complex lead-acid battery pre-crushing device has optimized the design of the chute and conveying trough on the base, and adopted a scientific and reasonable arrangement of increasing trough depth to ensure that materials of different particle sizes can smoothly enter the corresponding conveying trough, effectively avoiding material blockage and leakage problems.

[0019] 3. This complex lead-acid battery pre-crushing device features a significant improvement in the installation structure of the crushing components. It employs a combination of a main support frame and an auxiliary support frame, with the crushing components fixedly mounted on the main support frame and the toothed rollers rotatably mounted on the auxiliary support frame. This unique support structure design provides more stable support for the crusher, effectively enhancing its stability during operation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a complex lead-acid battery pre-crushing device according to the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the first conveyor belt in a complex lead-acid battery pre-crushing device of this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the base platform in a complex lead-acid battery pre-crushing device according to the present invention.

[0024] Figure 4 This is a three-dimensional structural diagram of the steel column in a complex lead-acid battery pre-crushing device according to the present invention.

[0025] Figure 5 This is a three-dimensional structural diagram of the sealing plate in a complex lead-acid battery pre-crushing device according to the present invention.

[0026] Figure 6 This is a three-dimensional structural diagram of the feed hopper, crushing components and screening components in a complex lead-acid battery pre-crushing device according to the present invention, in a vertically arranged state.

[0027] Figure 7 This is a three-dimensional structural diagram of the feeding hopper in a complex lead-acid battery pre-crushing device according to the present invention.

[0028] Figure 8This is a three-dimensional structural diagram of the crushing component in a complex lead-acid battery pre-crushing device according to the present invention.

[0029] Figure 9 This is a three-dimensional structural diagram of the screening component in a complex lead-acid battery pre-crushing device according to the present invention.

[0030] Figure 10 This is a three-dimensional structural diagram of the sieve plate in a complex lead-acid battery pre-crushing device according to the present invention.

[0031] Figure 11 This is a three-dimensional structural diagram (with the sealing plate removed) of a complex lead-acid battery pre-crushing device according to the present invention.

[0032] In the diagram: 1. Base; 2. Chute; 3. First conveying trough; 4. Second conveying trough; 5. Drainage hole; 6. Driven roller; 7. Driven roller; 8. Small reducer; 9. Small motor; 10. Second conveyor belt; 11. First conveyor belt; 12. Steel column; 13. Steel beam; 14. Sealing plate; 15. Feed hopper; 1501. Plate section; 1502. Inclined section; 1503. Pipe section; 16. Main support frame; 17. Auxiliary support frame; 18. Toothed roller; 19. Large motor; 20. Large reducer; 21. Feed cylinder; 22. First annular groove; 23. Screen plate; 24. Sliding block; 25. Shaft; 26. Second annular groove. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying anything.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 based on the specific circumstances. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0035] Please see Figures 1 to 11 The present invention provides a technical solution: a complex lead-acid battery pre-crushing device, including a support frame, a feeding hopper 15, a crushing component, a screening component, and a base 1 made of concrete components.

[0036] The base 1 is provided with a chute 2, a first conveying chute 3, and a second conveying chute 4, arranged sequentially along the width of the base 1. The depths of the second conveying chute 4, the first conveying chute 3, and the chute 2 increase sequentially, meaning the depth of the chute 2 is greater than the depth of the first conveying chute 3, which is greater than the depth of the second conveying chute 4. The second conveying chute 4, the first conveying chute 3, and the chute 2 are interconnected. The base 1 has multiple drainage holes 5, through which the second conveying chute 4, the first conveying chute 3, and the chute 2 are interconnected. Conveying components are installed on the first conveying chute 3 and the second conveying chute 4 of the base 1.

[0037] The support frame is mounted on the base 1 and is fixedly connected to the base 1. The feed hopper 15, crushing component, and screening component are all fixedly installed on the support frame, and the feed hopper 15, crushing component, and screening component are arranged sequentially from top to bottom, with the screening component located above the base 1. The support frame is used to support and fix the feed hopper 15, crushing component, and screening component.

[0038] The screening component includes a feed cylinder 21 and two screening assemblies, which are arranged vertically inside the feed cylinder 21 and are in an inclined state. The upper edge of each screening assembly is hinged to the inner wall of the feed cylinder 21. The lower edge of the upper screening assembly is located above the second conveying trough 4, and the lower edge of the lower screening assembly is located above the first conveying trough 3.

[0039] In actual implementation, the crushing and conveying components are activated. A crane lifts multiple lead-acid batteries and places them into the feed hopper 15. Each battery enters the crushing component, where it pre-crushes the batteries. The resulting electrolyte and fragments flow downwards into the screening component. The upper screening element performs preliminary screening, causing larger fragments to fall onto the conveying component at the second conveying trough 4. The lower screening element performs secondary screening, causing smaller fragments to fall onto the conveying component at the first conveying trough 3. Most of the electrolyte flows downwards into the chute 2, which is also the electrolyte collection tank. A small amount of electrolyte flows into either the first conveying trough 3 or the second conveying trough 4. The electrolyte in the first conveying trough 3 or the second conveying trough 4 flows back into the chute 2 through various drain holes 5, thus achieving electrolyte collection. The conveying components on the first and second conveying troughs transport the screened crushed material to the subsequent crushing and sorting system, completing the entire pre-crushing and screening process. The base is constructed of cast concrete, providing excellent stability and load-bearing capacity.

[0040] Specifically, a first annular groove 22 and a second annular groove 26 are respectively formed on the two side walls of the feeding cylinder 21. The screening assembly includes a screen plate 23, a shaft 25, and two sliding blocks 24. The upper edge of the screen plate 23 is fixedly connected to the outer side wall of the shaft 25, and the two ends of the shaft 25 are rotatably connected to the inner side wall of the feeding cylinder 21. The two sliding blocks 24 are respectively fixedly installed on the lower two side edges of the screen plate 23, and the sliding blocks 24 are located in the first annular groove 22 or the second annular groove 26. The sliding blocks 24 are slidably connected to the feeding cylinder 21 through the first annular groove 22 or the second annular groove 26. A spring is embedded and fixedly installed in the first annular groove 22 or the second annular groove 26 of the feeding cylinder 21, and the upper end of the spring abuts against the sliding block 24. The upper end of the spring abuts against the sliding block 24, which plays a role in buffering and resetting.

[0041] The feeding cylinder serves to receive and guide the material, and is used to install the screening components. Through the cooperation of the sliding block 24 and the annular groove, the screen plate 23 slides and rotates within the feeding cylinder 21. Specifically, the lower part of the screen plate 23 rotates locally around the shaft 25, causing the screen plate 23 to oscillate. During this oscillation, the screen plate 23 is cushioned by a spring. The mesh size of the lower screen plate 23 is smaller than that of the upper screen plate 23. As the material falls, it impacts the screen plate 23, causing it to be stressed and oscillate. Due to uneven stress, the amplitude of the oscillation of the screen plate 23 varies.

[0042] During operation, the crushed material enters the feed cylinder 21 and first contacts the upper screening assembly. Because the screening assembly is tilted, the material slides down the screen plate 23 under gravity. Larger pieces and some fibers slide from the lower edge of the screen plate 23 to the second conveying trough 4. As material continues to enter and the screening assembly vibrates, the screen plate 23 undergoes elastic deformation and vibration under the action of springs, further promoting material screening. After passing through the upper screening assembly, the material continues to flow into the lower screening assembly for secondary screening. The lower screening assembly has relatively smaller screen openings, which can further separate smaller pieces and residual fibers to the first conveying trough 3. This two-stage screening design can more thoroughly remove fibers from the crushed material, effectively preventing fibers from entering the subsequent crushing and sorting system and causing equipment failure, thus improving the reliability of the entire pre-crushing device.

[0043] Specifically, the feed hopper 15 includes a plate portion 1501, an inclined portion 1502, and a tube portion 1503. The upper edge of the inclined portion 1502 is fixedly connected to the plate portion 1501, and the lower edge of the inclined portion 1502 is fixedly connected to the upper edge of the tube portion 1503. The four periphery of the plate portion 1501 is fixedly installed with a support frame.

[0044] The main function of the feed hopper 15 is to temporarily store and guide complex lead-acid batteries into the crushing component. The plate section 1501 provides a large material receiving area, capable of accommodating a certain number of batteries; the inclined section acts as a transition and guide, allowing the batteries to smoothly slide from the plate section 1501 into the tube section 1503; the tube section 1503 then guides the batteries to the feed inlet of the crushing component. Through this structural design, the feed hopper 15 ensures that the batteries enter the crushing component evenly and stably, improving crushing efficiency and effect; and avoids the accumulation caused by a large number of batteries directly entering the crushing component. At the same time, the fixed connection between the feed hopper 15 and the support frame ensures its stability during operation, avoiding material conveying obstruction or equipment failure due to vibration or other factors.

[0045] Specifically, the crushing component includes a main support frame 16, an auxiliary support frame 17, and two crushing assemblies. The main support frame 16 is fixedly mounted on a support frame, and the auxiliary support frame 17 is fixedly mounted inside the main support frame 16. The crushing assemblies include a toothed roller 18, a large motor 19, and a large reducer 20. Both the large reducer 20 and the large motor 19 are fixedly mounted on the main support frame 16. The two ends of the toothed roller 18 are rotatably mounted on the auxiliary support frame 17. The power output shaft of the large motor 19 is fixedly mounted to the power input end of the large reducer 20, and the power output shaft of the large reducer 20 is drively connected to one end of the toothed roller 18. The two toothed rollers 18 are arranged laterally in parallel and rotate in opposite directions.

[0046] The toothed rollers 18 are driven to rotate in opposite directions by a large motor 19 and a large reducer 20, thus crushing the complex lead-acid batteries. The combined installation structure of the main support frame 16 and the auxiliary support frame 17 provides more stable support for the crusher and enhances the stability of the crushing components during operation. The opposite rotation of the toothed rollers 18 effectively improves the crushing efficiency, ensuring that the batteries are fully crushed, allowing the electrolyte to flow out smoothly, and simultaneously crushing solid materials into fragments of different particle sizes, providing favorable conditions for subsequent screening.

[0047] Specifically, the support frame includes four steel columns 12, multiple steel beams 13, and four sealing plates 14. The two ends of each steel beam 13 are welded to two adjacent steel columns 12. The four steel columns 12 and multiple steel beams 13, after welding, form a rectangular frame structure. The four sealing plates 14 are fixedly installed on the four sides of the frame structure. The feed hopper 15, crushing component, and screening component are all fixedly installed within the frame structure, and are vertically connected.

[0048] The main function of the support frame is to provide stable support and fixation for the feed hopper 15, crushing components, and screening components, ensuring the positional accuracy and stability of each component during operation. Using a cuboid frame structure welded from steel columns 12 and steel beams 13, the support frame possesses high strength and stability, capable of withstanding the weight of the feed hopper 15, crushing components, screening components, and various forces generated during operation. The sealing plate 14 further enhances the integrity and sealing of the support frame, preventing material leakage or spillage during conveying, and also facilitating the installation, maintenance, and repair of components inside the support frame. Through the rational design of the support frame's structure and dimensions, this invention ensures the stable operation of the entire pre-crushing device, improving the safety and reliability of the equipment.

[0049] Specifically, the conveying components include a first conveyor belt 11, a second conveyor belt 10, a drive roller 6, and a driven roller 7. The drive roller 6 and driven roller 7 are rotatably mounted on the base 1. The drive roller 6 is located on the first conveying trough 3 and the second conveying trough 4, respectively, and the driven roller 7 is also located on the first conveying trough 3 and the second conveying trough 4, respectively. The first conveyor belt 11 is wound around the outer walls of the drive roller 6 and driven roller 7, and is located within the first conveying trough 3. The second conveyor belt 10 is wound around the outer walls of the drive roller 6 and driven roller 7, and is located within the second conveying trough 4. The drive roller 6 is connected to the driven roller 7 via the first conveyor belt 11 and the second conveyor belt 10. The conveying components also include a small reducer 8 and a small motor 9. The small reducer 8 and small motor 9 are fixedly mounted on the base 1. The power output end of the small motor 9 is fixedly mounted to the power input end of the small reducer 8, and the power output end of the small reducer 8 is connected to one end of the drive roller 6.

[0050] During operation, a small motor 9 drives the active roller 6 to rotate via a small reducer 8. The active roller 6 is connected to the driven roller 7 via a conveyor belt, which in turn drives the conveyor belt. The first conveyor belt 11 and the second conveyor belt 10 respectively transport the screened crushed material to the subsequent crushing and sorting system. The automatic conveying of the crushed material is achieved through the conveying components, improving the automation level and production efficiency of the entire pre-crushing device, reducing manual intervention, and lowering labor intensity. The lowest point of either the first conveyor belt 11 or the second conveyor belt 10 is higher than the drain hole 5 to avoid clogging. The electrolyte on the conveyor belt can flow along the edge gaps to the bottom of the conveying trough, and the electrolyte in the conveying trough flows into the chute 2 through the drain hole 5.

[0051] The terms "large" and "small" in this technical solution are used only to distinguish technical features and do not restrict the equipment model parameters used for the technical features.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A complex lead-acid battery pre-crushing device, characterized in that: It includes a support frame, a feed hopper (15), a crushing component, a screening component, and a base (1) made of concrete components. The base (1) is provided with a chute (2), a first conveying chute (3), and a second conveying chute (4), and the chute (2), the first conveying chute (3), and the second conveying chute (4) are arranged in sequence along the width direction of the base (1). The depth of the second conveying chute (4), the first conveying chute (3), and the chute (2) increases sequentially, and the second conveying chute (4), the first conveying chute (3), and the chute (2) are interconnected. Conveying components are installed on the first conveying chute (3) and the second conveying chute (4) of the base (1). The support frame is mounted on the base (1) and is fixedly connected to the base (1). The feed hopper (15), crushing component and screening component are all fixedly installed on the support frame. The feed hopper (15), crushing component and screening component are arranged from top to bottom. The screening component is located above the base (1). The screening component includes a feeding cylinder (21) and two screening components. The two screening components are arranged vertically inside the feeding cylinder (21) and are in an inclined state. The upper edge of the screening component is hinged to the inner wall of the feeding cylinder (21). The lower edge of the upper screening component is located above the second conveying trough (4), and the lower edge of the lower screening component is located above the first conveying trough (3).

2. The complex lead-acid battery pre-crushing device according to claim 1, characterized in that: The feeding cylinder (21) has a first annular groove (22) and a second annular groove (26) respectively on its two side walls. The screening assembly includes a screen plate (23), a shaft (25), and two sliding blocks (24). The upper edge of the screen plate (23) is fixedly connected to the outer side wall of the shaft (25). The two ends of the shaft (25) are rotatably connected to the inner side wall of the feeding cylinder (21). The two sliding blocks (24) are respectively fixedly installed on the lower two side edges of the screen plate (23), and the sliding blocks (24) are located in the first annular groove (22) or the second annular groove (26). The sliding blocks (24) are slidably connected to the feeding cylinder (21) through the first annular groove (22) or the second annular groove (26). A spring is embedded and fixedly installed in the first annular groove (22) or the second annular groove (26) of the feeding cylinder (21), and the upper end of the spring abuts against the sliding block (24).

3. The complex lead-acid battery pre-crushing device according to claim 1, characterized in that: The feed hopper (15) includes a plate part (1501), an inclined part (1502), and a tube part (1503). The upper edge of the inclined part (1502) is fixedly connected to the plate part (1501), and the lower edge of the inclined part (1502) is fixedly connected to the upper edge of the tube part (1503). The four periphery of the plate part (1501) is fixedly installed with the support frame.

4. The complex lead-acid battery pre-crushing device according to claim 1, characterized in that: The crushing component includes a main support frame (16), an auxiliary support frame (17), and two crushing components. The main support frame (16) is fixedly installed on the support frame, and the auxiliary support frame (17) is fixedly installed inside the main support frame (16). The crushing component includes a toothed roller (18), a large motor (19), and a large reducer (20). The large reducer (20) and the large motor (19) are both fixedly installed on the main support frame (16). The two ends of the toothed roller (18) are rotatably installed on the auxiliary support frame (17). The power output shaft of the large motor (19) is fixedly installed with the power input end of the large reducer (20), and the power output shaft of the large reducer (20) is connected to one end of the toothed roller (18). The two toothed rollers (18) are arranged horizontally in parallel and rotate in opposite directions.

5. The complex lead-acid battery pre-crushing device according to claim 1, characterized in that: The support frame includes four steel columns (12), multiple steel beams (13), and four sealing plates (14). The two ends of the steel beams (13) are welded to two adjacent steel columns (12) respectively. The four steel columns (12) and multiple steel beams (13) form a rectangular frame structure after welding. The four sealing plates (14) are fixedly installed on the four sides of the frame structure respectively. The feed hopper (15), crushing component, and screening component are all fixedly installed inside the frame structure, and the feed hopper (15), crushing component, and screening component are connected vertically.

6. The complex lead-acid battery pre-crushing device according to claim 1, characterized in that: The conveying components include a first conveyor belt (11), a second conveyor belt (10), a drive roller (6), and a driven roller (7). The drive roller (6) and the driven roller (7) are rotatably mounted on the base (1). The drive roller (6) is located on the first conveying groove (3) and the second conveying groove (4), respectively. The driven roller (7) is located on the first conveying groove (3) and the second conveying groove (4), respectively. The first conveyor belt (11) is wound around the outer side wall of the drive roller (6) and the driven roller (7), and the first conveyor belt (11) is located in the first conveying groove (3). The second conveyor belt (10) is wound around the outer side wall of the drive roller (6) and the driven roller (7), and the second conveyor belt (10) is located in the second conveying groove (4). The drive roller (6) is connected to the driven roller (7) through the first conveyor belt (11) and the second conveyor belt (10).

7. A complex lead-acid battery pre-crushing device according to claim 6, characterized in that: The conveying component also includes a small reducer (8) and a small motor (9). The small reducer (8) and the small motor (9) are both fixedly installed on the base (1). The power output end of the small motor (9) is fixedly installed with the power input end of the small reducer (8). The power output end of the small reducer (8) is connected to one end of the drive roller (6).

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