Light and thin scrap steel crushing recycling device

Abstract

This invention discloses a device for crushing, recycling, and reusing thin scrap steel, relating to the technical field of scrap steel crushing and recycling equipment. The device includes a main body with two U-shaped loading slots on the upper surface at both ends. Each U-shaped loading slot has a crushing component for initial crushing of thin scrap steel. Directly below the crushing component is a screening and recycling component for secondary crushing and screening of the crushed material. The device is equipped with a linked automatic feeding component, which simultaneously and automatically discharges qualified recycled material, iron filings, and pure impurities using a single unloading cylinder. This eliminates the need for manual cleaning and unloading, significantly reducing manual labor intensity and completely preventing material accumulation and blockage. When the screening magnetic rod is de-energized and loses its magnetism, iron filings automatically fall off and are recycled, achieving deep screening of impurities. The final discharged impurities are pure iron-free impurities, avoiding waste of high-quality iron resources and maximizing the extension of the resource recycling chain.

Description

Technical Field

[0001] This invention relates to the technical field of scrap steel crushing and recycling equipment, specifically a lightweight scrap steel crushing, recycling, and reuse device. Background Technology

[0002] Currently, light and thin scrap steel is an important recycled steel raw material in the field of resource recycling, and its efficient processing is crucial for the green development of the steel industry. Conventional crushing and recycling equipment currently suffers from numerous technical shortcomings, making it difficult to meet the demands of refined and large-scale resource recycling.

[0003] Existing equipment mostly employs a single crushing structure, which is prone to problems such as material entanglement, slippage, and incomplete crushing. Screening mainly relies on static screen plates, which are prone to clogging and have low efficiency. Furthermore, it lacks a high-efficiency magnetic separation structure for impurity removal, resulting in low iron resource recovery rates and hindering resource recycling. At the same time, crushing and screening are mostly driven independently, leading to high energy consumption, poor coordination, cumbersome disassembly and maintenance of core components, and the need for manual cleaning of accumulated material blockages. In terms of operational stability, processing accuracy, resource recycling rate, and degree of automation, it fails to meet the industry's requirements for high-efficiency processing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a lightweight scrap steel crushing, recycling, and reuse device.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: This invention discloses a lightweight scrap steel crushing, recycling, and reuse device, comprising: The device body has two U-shaped grooves on the upper surface of both ends. Each U-shaped groove has a crushing component for primary crushing of thin scrap steel. A screening and recycling component for secondary crushing and screening of the scrap is located directly below the crushing component. A recycling port for discharging recycled waste is located on the front of the lower end of the device body. An impurity outlet for discharging debris is located at the bottom of the device body. An automatic pushing component for pushing out recycled waste and discharging impurities is located inside the lower end of the device body. An external hopper connected to the device body is located below the recycling port.

[0006] As a preferred embodiment of the present invention, the crushing assembly includes two main mounting plates, which are respectively snapped into the interior of two U-shaped mounting slots. A front crushing roller is rotatably connected to the front of the lower side of each of the two main mounting plates via bearings. A driven gear is fixedly connected to the surface of the left end of the front crushing roller. A rear crushing roller is rotatably connected to the rear of the lower side of each of the two main mounting plates via bearings. A drive gear that meshes with the driven gear is fixedly connected to the surface of the left end of the rear crushing roller. A reduction motor is fixedly mounted on the right side of the rear end of the right main mounting plate via a motor mount, and the output shaft of the left end of the reduction motor is fixedly connected to the right end of the rear crushing roller via a coupling.

[0007] As a preferred embodiment of the present invention, the two main mounting plates and the two sides of the upper front of the device body are provided with a plurality of positioning slots with interconnected internal cavities. Each positioning slot is fitted with a positioning rod, and the front end of each positioning rod is fixedly connected to a transmission bracket. The front end of the transmission bracket is fixedly connected to a driven mounting plate by a plurality of bolts. A propulsion cylinder is fixedly installed in the middle of the upper front of the device body, and the mounting plate at the front end of the propulsion cylinder is fixedly connected to the back of the lower end of the driven mounting plate by a plurality of bolts.

[0008] As a preferred embodiment of the present invention, each of the two main mounting plates is fixedly connected to a loading and unloading handle on the top of the side away from each other, and the middle area of ​​the back of the transmission bracket has a linear array of several hollow buffer pads.

[0009] As a preferred embodiment of the present invention, the screening and recycling assembly includes a secondary crushing roller. Both ends of the secondary crushing roller are rotatably connected to the middle positions of the two side surfaces of the device body via bearings. A V-shaped screening screen plate is provided directly below the secondary crushing roller and connected to the inner wall of the device body. A movable groove is provided on the right side of the lower end of the device body. A second screening screen plate is inserted into the inner cavity of the movable groove. An anti-deviation clip is fixedly connected to the middle position of the upper surface of the right end of the second screening screen plate.

[0010] As a preferred embodiment of the present invention, an upper drive column with a regular hexagonal surface is fixedly connected to the right end face of the front crushing roller, and an upper drive sleeve that fits against the surface of the upper drive column is movably sleeved on the surface of the upper drive column. A lower follower column is fixedly connected to the right end face of the secondary crushing roller, and a lower follower sleeve is movably sleeved on the surface of the lower follower column.

[0011] As a preferred embodiment of the present invention, a lower follower post two is rotatably connected to the upper part of the movable slot and located on the right side of the device body via a bearing. An intermittent gear is fixedly connected to the surface of the left end of the lower follower post two. Two limiting brackets are fixedly connected to the front and rear of the lower follower post two and located on the right side of the device body. A driven frame is movably engaged in the inner cavity of the right end of each of the two limiting brackets. Several upper racks are fixedly connected to the middle position of the upper surface of the inner cavity of the driven frame. Several lower racks are fixedly connected to the middle position of the lower surface of the inner cavity of the driven frame. A docking block is fixedly connected to the middle position of the bottom surface of the driven frame. The docking block and the inner wall of the anti-deviation clamp are both threadedly connected with positioning rods. A lower follower sleeve two is movably sleeved on the surface of the right end of the lower follower post two.

[0012] As a preferred embodiment of the present invention, the surfaces of the upper drive sleeve, lower driven sleeve one, and lower driven sleeve two are all rotatably connected to a transmission plate via bearings. A main drive sprocket is fixedly connected to the right end face of the upper drive sleeve, and a lower driven double sprocket is fixedly connected to the right end face of the lower driven sleeve one. A transmission chain one is meshed inside the left end of both the main drive sprocket and the lower driven double sprocket. A lower driven single sprocket is fixedly connected to the right end face of the lower driven sleeve two, and a transmission chain two is meshed inside the right end of both the lower driven single sprocket and the lower driven double sprocket. An adjustment cylinder is fixedly installed directly above the lower driven cylinder two and on the right side of the main body of the device, and the piston rod on the right side of the adjustment cylinder is fixedly connected to the left side of the lower end of the transmission plate.

[0013] As a preferred embodiment of the present invention, the automatic feeding assembly includes a discharge cylinder. The front end face of the discharge cylinder is fixedly connected to the back side of the lower end of the device body. An inner push plate is fixedly connected to the piston rod at the front end of the discharge cylinder. Two inner follower rods are fixedly connected to the front sides of both ends of the inner push plate. A front sealing plate that is stuck in the inner cavity of the recycling port is fixedly connected to the front ends of the two inner follower rods.

[0014] As a preferred embodiment of the present invention, a plurality of auxiliary holes are provided directly below the recycling port and on the front of the main body of the device. A lower loading slot is provided directly below the auxiliary holes and on the front of the main body of the device. A lower sealing plate is inserted into the inner cavity of the lower loading slot. A screening magnetic rod with the same number as the auxiliary holes is fixedly connected to the back of the upper end of the lower sealing plate. Synchronous connecting rods are fixedly connected to both sides of the front sealing plate and the lower sealing plate that are close to each other.

[0015] The beneficial effects of this invention are: 1. This lightweight scrap steel crushing, recycling, and reuse device features a stable and efficient staged crushing structure, supporting a dual improvement in resource recycling efficiency and equipment durability: This device employs a graded crushing structure combining a double-roller primary crusher with a secondary crushing roller. Addressing the characteristics of thin, easily entangled, deformed, and slippery scrap steel, it achieves step-by-step crushing through synchronous reverse extrusion and shearing by the front and rear crushing rollers, coupled with fine crushing by the secondary crushing roller. This completely solves the industry problems of incomplete crushing, material entanglement on the rollers, and slippage caused by single crushing structures. It ensures that the crushed scrap steel particles are uniform and regular, providing qualified raw materials for subsequent resource recycling and meeting smelting feeding standards. Simultaneously, the crushing components are precisely positioned and installed using positioning rods and main mounting plates, along with shock-absorbing rubber pads at the transmission frame. This effectively counteracts vibrations generated during crushing operations, preventing positioning misalignment and loosening of components due to vibration. It ensures that the front and rear crushing rollers maintain a stable fit and operating condition, significantly improving the continuity and stability of the crushing operation, extending the service life of the crushing rollers and related transmission components, and providing a solid guarantee for continuous resource recycling operations.

[0016] 2. This type of lightweight scrap steel crushing, recycling, and reuse device features dynamic dual screening and magnetic separation for impurity removal, enhancing the purity and utilization rate of resource recycling. The device employs a dual dynamic screening structure combining V-shaped primary screening and reciprocating secondary screening. This overcomes the drawbacks of traditional static screens, such as easy clogging and incomplete screening, accelerating material screening and preventing the accumulation and blockage of fine materials. Combined with pluggable magnetic screening rods, it achieves stepwise adsorption and separation of ferromagnetic metallic materials. This not only effectively removes non-metallic impurities such as paint peels, plastics, and wood chips, but also recycles iron filings mixed in with these impurities, maximizing the iron resource recycling rate, significantly improving the purity of the recycled iron, reducing impurity interference in subsequent smelting processes, improving the quality of recycled steel, and contributing to the high-quality development of the resource recycling system. Simultaneously, the screening components adopt a pluggable structure, facilitating quick disassembly, cleaning, replacement, and maintenance, shortening equipment downtime for repairs, reducing maintenance difficulty, and ensuring the efficient advancement of resource recycling operations.

[0017] 3. This type of lightweight scrap steel crushing, recycling, and reuse device features a single-power linkage transmission and adjustable clutch, reducing energy consumption for resource recycling and improving equipment operational stability. By using sprockets and chains in conjunction with adjustable transmission components, a single power source synchronously drives multiple core components of the crushing and screening systems. This eliminates the high energy consumption and asynchronous nature of traditional multi-motor independent drives, reduces the number of power components, lowers overall equipment energy consumption, and improves energy utilization efficiency in the resource recycling process. The adjustable cylinder allows for flexible control of the engagement and disengagement of each clamp and column, enabling coordinated start-up, shutdown, and operation of the crushing and screening components. This meets the needs of different production conditions, effectively reducing component jamming and downtime. Furthermore, it allows for secondary reinforcement of the crushing components, further improving the precision of component transmission. The overall continuity and stability of the equipment operation are significantly enhanced, providing reliable support for the stable implementation of resource recycling.

[0018] 4. This type of lightweight scrap steel crushing, recycling, and reuse device features single-drive linkage for material distribution and discharge, perfecting the closed loop of resource recycling and enhancing automation and environmental friendliness. The device is equipped with a linkage-type automatic feeding component, which simultaneously and automatically discharges qualified recycled materials, iron filings, and pure impurities through a single discharge cylinder. This eliminates the need for manual cleaning and unloading, significantly reducing the intensity of manual operation and completely preventing material accumulation and blockage. When the screening magnetic rod is de-energized and loses its magnetism, the iron filings automatically fall off and are recycled, achieving deep screening of impurities. The final discharged impurities are pure iron-free impurities, avoiding the waste of high-quality iron resources and maximizing the extension of the resource recycling chain. Furthermore, the discharge port adopts a double-sealing plate synchronous linkage structure, which not only ensures smooth classified discharge but also avoids material leakage and dust problems during equipment operation, improving the environmental friendliness of the equipment operation. At the same time, the crushing component adopts a quick-release positioning installation structure, combined with a buffer and shock absorption structure, simplifying the disassembly and maintenance process. This achieves fully automated closed-loop operation of crushing, screening, impurity removal, and discharge, perfecting the entire resource recycling system. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of a lightweight scrap steel crushing, recycling and reuse device according to the present invention; Figure 2 This is a schematic diagram of the structure of a lightweight scrap steel crushing, recycling and reuse device from the right side view of the present invention; Figure 3 This is a side sectional view of a lightweight scrap steel crushing, recycling and reuse device according to the present invention; Figure 4 This invention relates to a lightweight scrap steel crushing, recycling, and reuse device. Figure 3 A structural diagram from below; Figure 5 This is an exploded view of a lightweight scrap steel crushing, recycling, and reuse device according to the present invention. Figure 6 This invention relates to a lightweight scrap steel crushing, recycling, and reuse device. Figure 5 A structural diagram from the right side; Figure 7 This invention relates to a lightweight scrap steel crushing, recycling, and reuse device. Figure 6 A structural diagram from below; Figure 8 This invention relates to a lightweight scrap steel crushing, recycling, and reuse device. Figure 6 A structural diagram from a rear view; Figure 9This is a partial structure diagram of the screening and recycling component of a lightweight scrap steel crushing, recycling and reuse device according to the present invention; Figure 10 This invention relates to a lightweight scrap steel crushing, recycling, and reuse device. Figure 9 A structural diagram from the right side; Figure 11 This is a perspective view of a portion of the automatic feeding component of a lightweight scrap steel crushing, recycling, and reuse device according to the present invention. Figure 12 This invention relates to a lightweight scrap steel crushing, recycling, and reuse device. Figure 3 Enlarged view of point A in the middle; Figure 13 This invention relates to a lightweight scrap steel crushing, recycling, and reuse device. Figure 4 Enlarged view of point B in the middle; Figure 14 This invention relates to a lightweight scrap steel crushing, recycling, and reuse device. Figure 10 Enlarged view of point C in the middle.

[0020] In the diagram: 1. Main body of the device; 2. U-shaped loading trough; 3. Crushing assembly; 301. Main mounting plate; 302. Front crushing roller; 303. Driven gear; 304. Rear crushing roller; 305. Drive gear; 306. Gearbox; 307. Positioning slot; 308. Positioning rod; 309. Transmission frame; 310. Driven mounting plate; 311. Propulsion cylinder; 312. Loading / unloading handle; 313. Buffer pad; 4. Screening and recovery assembly; 401. Secondary crushing roller; 402. Screening screen plate one; 403. Movable loading trough; 404. Screening screen plate two; 405. Anti-deviation clamp; 406. Upper drive column; 407. Upper drive sleeve; 408. Lower driven column one; 409. Lower driven sleeve one; 410. Lower driven column two. 411. Intermittent gear; 412. Limiting bracket; 413. Driven frame; 414. Upper rack; 415. Lower rack; 416. Docking block; 417. Positioning lever; 418. Lower driven sleeve II; 419. Transmission plate; 420. Main drive sprocket; 421. Lower driven double sprocket; 422. Transmission chain I; 423. Lower driven single sprocket; 424. Transmission chain II; 425. Adjusting cylinder; 5. Recycling port; 6. Impurity outlet; 7. Automatic pushing assembly; 701. Unloading cylinder; 702. Inner push plate; 703. Inner driven rod; 704. Front sealing plate; 705. Auxiliary hole; 706. Lower loading slot; 707. Lower sealing plate; 708. Screening magnetic rod; 709. Synchronization connecting rod; 8. External hopper. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] Example: Figures 1-14 As shown, the present invention discloses a device for crushing, recycling, and reusing thin scrap steel, comprising: a device body 1, two U-shaped loading slots 2 are formed on the upper surface of both ends of the device body 1, each U-shaped loading slot 2 is fitted with a crushing component 3 for primary crushing of thin scrap steel, a screening and recycling component 4 for secondary crushing and screening of the crushed material is provided directly below the crushing component 3, a recycling port 5 for discharging recycled waste is provided on the front of the lower end of the device body 1, an impurity outlet 6 for discharging debris is provided at the bottom of the device body 1, an automatic pushing component 7 for pushing out recycled waste and discharging impurities is provided inside the lower end of the device body 1, and an external hopper 8 connected to the device body 1 is provided below the recycling port 5.

[0023] The crushing assembly 3 includes two main mounting plates 301, which are respectively snapped into the interiors of two U-shaped mounting slots 2. A front crushing roller 302 is rotatably connected to the front of the lower side of each main mounting plate 301 via bearings. A driven gear 303 is fixedly connected to the left end surface of the front crushing roller 302. A rear crushing roller 304 is rotatably connected to the rear of the lower side of each main mounting plate 301 via bearings. A drive gear 305 meshing with the driven gear 303 is fixedly connected to the left end surface of the rear crushing roller 304. A reduction motor 306 is fixedly mounted on the right side of the rear end of the right main mounting plate 301 via a motor mount, and the output shaft of the left end of the reduction motor 306 is fixedly connected to the right end of the rear crushing roller 304 via a coupling. On both sides of the upper front of the main body 1, there are several positioning slots 307 with interconnected internal cavities. Each positioning slot 307 has a positioning rod 308 inserted into its internal cavity. The front end of each positioning rod 308 is fixedly connected to a transmission bracket 309. The front end of the transmission bracket 309 is fixedly connected to a driven mounting plate 310 by several bolts. A propulsion cylinder 311 is fixedly installed in the middle of the upper front of the main body 1. The mounting plate at the front end of the propulsion cylinder 311 is fixedly connected to the back of the lower end of the driven mounting plate 310 by several bolts. A loading and unloading handle 312 is fixedly connected to the top of the two main mounting plates 301 on opposite sides. Several hollow buffer pads 313 are linearly arranged in the middle area of ​​the back of the transmission bracket 309.

[0024] The system incorporates a transmission bracket 309, buffer pads 313, positioning rods 308, and main mounting plates 301. First, the positioning rods 308 and main mounting plates 301 work together to achieve rapid insertion and removal positioning of the crushing component 3, replacing traditional bolt fastening and significantly improving disassembly and maintenance efficiency. Then, the hollow buffer pads 313, linearly arrayed on the back of the transmission bracket 309, fit tightly against the main body 1 after positioning, effectively absorbing vibrations generated during crushing operations and preventing the positioning rods 308 and main mounting plates 301 from shifting or loosening due to vibrations. Finally, it addresses the root cause of decreased component fitting accuracy and unstable installation caused by the vibration of the crushing rollers, ensuring the long-term stability of the crushing component 3, extending equipment lifespan, and simultaneously improving the continuity of crushing operations and the uniformity of finished particle size.

[0025] The screening and recycling assembly 4 includes a secondary crushing roller 401. Both ends of the secondary crushing roller 401 are rotatably connected to the middle positions of the two side surfaces of the main body 1 via bearings. A V-shaped screening screen plate 402 connected to the inner wall of the main body 1 is provided directly below the secondary crushing roller 401. A movable groove 403 is opened on the right side of the lower end of the main body 1. A second screening screen plate 404 is inserted into the inner cavity of the movable groove 403. An anti-deviation clip 405 is fixedly connected to the middle position of the upper surface of the right end of the second screening screen plate 404. An upper drive column 406 with a regular hexagonal surface is fixedly connected to the right end face of the front crushing roller 302. An upper drive sleeve 407 is movably fitted onto the surface of the secondary crushing roller 401. A lower follower post 408 is fixedly connected to the right end face of the secondary crushing roller 401. A lower follower sleeve 409 is movably fitted onto the surface of the lower follower post 408. A lower follower post 410 is rotatably connected to the upper part of the movable groove 403 and located on the right side of the device body 1 via a bearing. An intermittent gear 411 is fixedly connected to the left end of the lower follower post 410. Two limiting brackets 412 are fixedly connected to the front and rear of the lower follower post 410 and located on the right side of the device body 1. A driven frame 413 is movably engaged in the inner cavity of the right end of each of the two limiting brackets 412. Several upper racks 414 are fixedly connected to the middle position of the upper surface of the driven frame 413, and several lower racks 415 are fixedly connected to the middle position of the lower surface of the driven frame 413. A mating block 416 is fixedly connected to the middle position of the bottom surface of the driven frame 413. The mating block 416 and the inner wall of the anti-deviation clamp 405 are both threadedly connected to a positioning lever 417. The right end of the lower driven post 410 is movably fitted with a lower driven sleeve 418. The middle sections of the upper drive sleeve 407, the lower driven sleeve 409, and the lower driven sleeve 418 are all rotatably connected to a transmission plate 419 via bearings. The upper drive sleeve 407... A main drive sprocket 420 is fixedly connected to the right end face of 7. A lower driven double sprocket 421 is fixedly connected to the right end face of the lower driven sleeve 409. A transmission chain 422 is meshed inside the left end of both the main drive sprocket 420 and the lower driven double sprocket 421. A lower driven single sprocket 423 is fixedly connected to the right end face of the lower driven sleeve 418. A transmission chain 424 is meshed inside the right end of the lower driven single sprocket 423 and the lower driven double sprocket 421. An adjusting cylinder 425 is fixedly installed directly above the lower driven mounting column 410 and on the right side of the main body 1. The piston rod on the right side of the adjusting cylinder 425 is fixedly connected to the left side of the lower end of the transmission mounting plate 419.

[0026] The system utilizes a positioning cylinder 425, a transmission plate 419, an upper drive sleeve 407, a lower driven sleeve 1 409, a lower driven sleeve 2 418, and corresponding mounting columns. First, the positioning cylinder 425 pushes the transmission plate 419 to move, simultaneously controlling the engagement / disengagement of multiple sleeves and mounting columns. This enables coordinated start-up and shutdown of the crushing and screening components and transmission switching under single-power drive. Then, when the sleeves engage with the mounting columns, they provide secondary fixation and reinforcement for the crushing component 3 and the secondary crushing roller 401, compensating for the insufficient strength of positioning solely by the main mounting plate 301 and further improving the transmission coordination accuracy. Finally, the crushing component 3 can be quickly disassembled in the disengaged state without affecting the installation of other components, enabling rapid maintenance and replacement of the crushing mechanism. It also adapts to process control under different production conditions, breaking the limitations of traditional equipment with fixed transmission and inflexible switching.

[0027] The system comprises an intermittent gear 411, an upper rack 414, a lower rack 415, a driven frame 413, and a second screening screen 404. First, the intermittent gear 411 alternately meshes with the upper and lower racks, driving the driven frame 413 to reciprocate linearly. This causes the second screening screen 404 to vibrate synchronously, forming a dynamic screening structure. This addresses the problems of static screens being prone to clogging and incomplete screening. Then, in conjunction with the first V-shaped screening screen 402, it achieves dual-grading screening, significantly improving screening efficiency and material separation accuracy, preventing the accumulation and clogging of fine materials, and ensuring that qualified materials pass through quickly. Finally, this transmission structure requires no independent power source and can operate solely based on the main transmission system, reducing equipment energy consumption and component configuration. Simultaneously, the reciprocating screening accelerates material falling, improving overall processing efficiency.

[0028] The automatic feeding assembly 7 includes a discharge cylinder 701. The front end of the discharge cylinder 701 is fixedly connected to the back of the lower end of the device body 1. The piston rod at the front end of the discharge cylinder 701 is fixedly connected to an inner push plate 702. Two inner follower rods 703 are fixedly connected to the front ends of the inner push plate 702. The front ends of the two inner follower rods 703 are fixedly connected to a front sealing plate 704 that is stuck in the inner cavity of the recovery port 5. Several auxiliary holes 705 are opened directly below the recovery port 5 and on the front of the device body 1. A lower loading slot 706 is opened directly below the auxiliary holes 705 and on the front of the device body 1. A lower sealing plate 707 is inserted into the inner cavity of the lower loading slot 706. The back of the upper end of the lower sealing plate 707 is fixedly connected to a screening magnetic rod 708 with the same number as the auxiliary holes 705. Synchronous connecting rods 709 are fixedly connected to both sides of the front sealing plate 704 and the lower sealing plate 707 that are close to each other.

[0029] The system includes a discharge cylinder 701, an inner push plate 702, a front sealing plate 704, a synchronous connecting rod 709, a lower sealing plate 707, and a screening magnetic rod 708. First, the discharge cylinder 701, through the synchronous connecting rod 709, links the front sealing plate 704 and the lower sealing plate 707 to complete the three-level classification and discharge of qualified materials, iron filings, and pure impurities. A single drive enables multi-station discharge, simplifying the drive structure and reducing energy consumption and failure points. Then, when the lower sealing plate 707 moves outward, it drives the screening magnetic rod 708 to move out and demagnetize, and the adsorbed iron filings automatically fall off and are recycled, realizing the secondary recycling of iron resources mixed in with impurities and avoiding the waste of high-quality resources. Finally, the discharged impurities are pure impurities without iron, which greatly improves the resource recovery rate. At the same time, the linked sealing plate can prevent material leakage and dust generation during operation, improving the environmental friendliness and automation of the equipment.

[0030] During operation, after the equipment starts, the reduction motor 306 inside the crushing component 3 operates, driving the rear crushing roller 304 to rotate. The drive gear 305 on the rear crushing roller 304 meshes with the driven gear 303 on the front crushing roller 302, driving the front crushing roller 302 and the rear crushing roller 304 to rotate synchronously in opposite directions, forming the initial crushing station. The light and thin scrap steel to be processed is fed from the top of the main body 1 of the device. After being squeezed and sheared by the front crushing roller 302 and the rear crushing roller 304, the initial crushing operation is completed. The propulsion cylinder 311 runs, pushing the driven mounting plate 310 to move, which in turn drives the transmission mounting frame 309 to move synchronously, so that the positioning rod 308 extends and retracts in the positioning slot 307, realizing the locking and fixing or loosening and unloading of the main mounting plate 301 and the U-shaped mounting groove 2. Several hollow cavity buffer pads 313 arranged in a linear array in the middle area of ​​the back of the transmission mounting frame 309 will be in close contact with the inner wall of the main body 1 of the device after the positioning rod 308 extends and retracts and is positioned, effectively buffering the front crushing roller 302 and the rear crushing roller 304. The vibration generated by the crushing roller 304 during operation prevents the vibration from the crushing operation from affecting the installation and positioning accuracy of the positioning rod 308 and the main mounting plate 301. At the same time, it prevents the vibration from causing the positioning of the propulsion cylinder 311 to become loose or unstable, greatly improving the overall installation and operation stability of the crushing component 3. This provides a guarantee for the stable crushing process of resource recycling. The loading and unloading handle 312 can assist in the quick disassembly and assembly of the main mounting plate 301. The scrap steel fragments after primary crushing fall downwards and enter the station where the secondary crushing roller 401 is located. When the front crushing roller 302 rotates, it drives the upper drive column 406 to rotate. The upper drive column 406 drives the upper drive sleeve 407 to rotate, which in turn drives the main drive sprocket 420 to rotate. The main drive sprocket 420 drives the lower driven double sprocket 421 to rotate through the transmission chain 422. The lower driven double sprocket 421 drives the lower driven column 408 to rotate synchronously with the secondary crushing roller 401, which performs secondary fine crushing on the primary crushed material, further refining the material particles and consolidating the raw material foundation for resource recycling. The adjusting cylinder 425 can push the transmission plate 419 to move, and synchronously adjust the transmission engagement state of the upper drive sleeve 407, the lower driven sleeve one 409, and the lower driven sleeve two 418. Specifically, when the adjusting cylinder 425 moves to drive the upper drive sleeve 407 to re-engage with the upper drive column 406, a secondary strong fixed transmission connection of the front crushing roller 302 can be realized. Similarly, the adjusting cylinder 425 can also adjust the engagement state of the lower driven sleeve one 409 and the lower driven column one 408, and the lower driven sleeve two 418 and the lower driven column two 410, thereby realizing the clutch control and secondary stabilization of the crushing and screening components, and adapting to the different production and processing requirements of resource recycling. After secondary crushing, the material falls onto the V-shaped screening screen plate 402, completing the initial grading and screening. Particles meeting the size requirements fall through the screen holes, while oversized, unqualified materials are retained and returned to the crushing area for further cyclic crushing until they reach the required particle size. Simultaneously, the lower driven double sprocket 421 rotates, driving the lower driven single sprocket 423 to rotate via the transmission chain 424, which in turn drives the lower driven column 410 and intermittent gear 411 to rotate. During the rotation of the intermittent gear 411, it alternately interacts with the driven frame 4... The upper rack 414 and lower rack 415 inside 13 mesh, driving the driven frame 413 to reciprocate linearly between the two limit frames 412. When the driven frame 413 moves, it drives the anti-deviation clamp 405 to move through the docking block 416 and the positioning lever 417, thereby driving the screening screen plate 404 to reciprocate synchronously in the movable groove 403, performing secondary fine screening on the falling fragments, further separating qualified materials from impurities, improving screening accuracy, and providing support for precise sorting for resource recycling. After secondary screening, the material continues to fall. Ferromagnetic fragments in the material are adsorbed by the screening magnetic rods 708 in the auxiliary hole 705, while non-metallic fine impurities and dust initially settle downwards. The unloading cylinder 701 in the automatic pushing assembly 7 is activated, pushing the inner push plate 702 forward. The inner push plate 702 drives the front sealing plate 704 to move through two inner rods 703, opening the recovery port 5. At the same time, the front sealing plate 704, through the synchronous connecting rod 709, links the lower sealing plate 707 to slide outwards in the lower loading slot 706. The screening magnetic rods 708 move out of the auxiliary hole 705 along with the lower sealing plate 707. After the screening magnetic rods 708 are removed, the power is cut off. Once the magnetism is lost, the iron filings adsorbed on its surface lose their adsorption force and automatically fall onto the lower sealing plate 707, realizing the secondary recovery of iron resources and maximizing the resource recycling rate. At the same time, the inner push plate 702 moves forward, pushing the qualified recycled material after screening towards the recycling port 5, so that it falls into the external hopper 8 for collection. Meanwhile, the lower sealing plate 707 moves outward simultaneously, carrying away the iron filings on it. Iron-free pure impurities mixed in the material are discharged separately through the impurity outlet 6 at the bottom of the main body 1 of the device. Finally, the qualified recycled material, reusable iron filings, and pure impurities are separated and discharged in a three-level classification, improving the classified discharge system for resource recycling. After the material is discharged, the unloading cylinder 701 drives all components to reset, the front sealing plate 704 blocks the recovery port 5, the lower sealing plate 707 resets, the screening magnetic rod 708 is reinserted into the auxiliary hole 705 and regains its magnetism, and the subsequent material removal operation continues. The entire process of crushing, screening, removal and discharge is automated and continuous, and a whole-process resource recycling operation system for light and thin scrap steel is built.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A light and thin scrap steel crushing recycling device, characterized in that, include: The device body (1) has two U-shaped loading slots (2) on the upper surface of both ends. Each U-shaped loading slot (2) has a crushing component (3) for primary crushing of thin scrap steel in its inner cavity. A screening and recycling component (4) for secondary crushing and screening of the scrap is provided directly below the crushing component (3). A recycling port (5) for discharging recycled waste is provided on the front of the lower end of the device body (1). An impurity outlet (6) for discharging debris is provided at the bottom of the device body (1). An automatic pushing component (7) for pushing out recycled waste and discharging impurities is provided inside the lower end of the device body (1). An external hopper (8) connected to the device body (1) is provided below the recycling port (5).

2. A light and thin scrap steel crushing recycling device according to claim 1, characterized in that, The crushing assembly (3) includes two main mounting plates (301), which are respectively snapped into the interior of two U-shaped mounting slots (2). The front of the lower side of the two main mounting plates (301) is rotatably connected to a front crushing roller (302) via bearings. A driven gear (303) is fixedly connected to the surface of the left end of the front crushing roller (302). The rear of the lower side of the two main mounting plates (301) is rotatably connected to a rear crushing roller (304) via bearings. A drive gear (305) meshing with the driven gear (303) is fixedly connected to the surface of the left end of the rear crushing roller (304). A geared motor (306) is fixedly installed on the right side of the rear end of the main mounting plate (301) via a motor mount. The output shaft of the left end of the geared motor (306) is fixedly connected to the right end of the rear crushing roller (304) via a coupling.

3. A light and thin scrap steel crushing recycling device according to claim 2, characterized in that, The two main mounting plates (301) and the upper front of the device body (1) are provided with several positioning slots (307) with interconnected inner cavities. Each positioning slot (307) has a positioning rod (308) inserted into its inner cavity. Each positioning rod (308) has a transmission bracket (309) fixedly connected to its front end. The front end of the transmission bracket (309) is fixedly connected to a driven mounting plate (310) by several bolts. A propulsion cylinder (311) is fixedly installed in the middle of the upper front of the device body (1), and the mounting plate at the front end of the propulsion cylinder (311) is fixedly connected to the back of the lower end of the driven mounting plate (310) by several bolts.

4. The device for crushing, recycling, and reusing lightweight scrap steel according to claim 3, characterized in that, Each of the two main mounting plates (301) is fixedly connected to a mounting handle (312) on the top of the side away from each other, and the transmission mount (309) has a number of hollow buffer pads (313) arranged in a linear array in the middle area of ​​the back side.

5. The device for crushing, recycling, and reusing thin scrap steel according to claim 4, characterized in that, The screening and recycling assembly (4) includes a secondary crushing roller (401). Both ends of the secondary crushing roller (401) are rotatably connected to the middle position of the two sides of the main body (1) of the device through bearings. A V-shaped screening screen plate (402) connected to the inner wall of the main body (1) is provided directly below the secondary crushing roller (401). A movable loading groove (403) is opened on the right side of the lower end of the main body (1). A screening screen plate (404) is inserted into the inner cavity of the movable loading groove (403). An anti-deviation clip (405) is fixedly connected to the middle position of the upper surface of the right end of the screening screen plate (404).

6. The device for crushing, recycling, and reusing thin scrap steel according to claim 5, characterized in that, The right end face of the front crushing roller (302) is fixedly connected to an upper drive post (406) with a regular hexagonal surface. The surface of the upper drive post (406) is movably sleeved with an upper drive sleeve (407) that fits against its surface. The right end face of the secondary crushing roller (401) is fixedly connected to a lower follower post (408). The surface of the lower follower post (408) is movably sleeved with a lower follower sleeve (409).

7. The device for crushing, recycling, and reusing thin scrap steel according to claim 6, characterized in that, Above the movable mounting slot (403) and on the right side of the device body (1), a lower follower post (410) is rotatably connected via a bearing. An intermittent gear (411) is fixedly connected to the surface of the left end of the lower follower post (410). Two limiting brackets (412) are fixedly connected to the front and rear of the lower follower post (410) and on the right side of the device body (1). The inner cavity of the right end of each of the two limiting brackets (412) is movably engaged with a driven frame (413). Several upper racks (414) are fixedly connected to the middle position of the upper surface of the inner cavity of the driven frame (413), several lower racks (415) are fixedly connected to the middle position of the lower surface of the inner cavity of the driven frame (413), a mating block (416) is fixedly connected to the middle position of the bottom surface of the driven frame (413), the mating block (416) and the inner wall of the anti-deviation clamp (405) are both threadedly connected to a positioning rod (417), and the right end of the lower driven post (410) is movably sleeved with a lower driven clamp sleeve (418).

8. The device for crushing, recycling, and reusing lightweight scrap steel according to claim 7, characterized in that, The surfaces of the upper drive sleeve (407), lower driven sleeve one (409), and lower driven sleeve two (418) are all rotatably connected to a transmission plate (419) via bearings. A main drive sprocket (420) is fixedly connected to the right end face of the upper drive sleeve (407), and a lower driven double sprocket (421) is fixedly connected to the right end face of the lower driven sleeve one (409). A transmission chain one (42) is meshed inside the left ends of both the main drive sprocket (420) and the lower driven double sprocket (421). 2) A lower single sprocket (423) is fixedly connected to the right end face of the lower ferrule (418). The lower single sprocket (423) and the lower double sprocket (421) are internally meshed with a transmission chain (424). A positioning cylinder (425) is fixedly installed directly above the lower mounting post (410) and on the right side of the main body (1) of the device. The piston rod on the right side of the positioning cylinder (425) is fixedly connected to the left side of the lower end of the transmission mounting plate (419).

9. The device for crushing, recycling, and reusing lightweight scrap steel according to claim 8, characterized in that, The automatic feeding assembly (7) includes a discharge cylinder (701). The front end of the discharge cylinder (701) is fixedly connected to the back of the lower end of the device body (1). The piston rod at the front end of the discharge cylinder (701) is fixedly connected to an inner push plate (702). Two inner rods (703) are fixedly connected to the front ends of the inner push plate (702). The front ends of the two inner rods (703) are fixedly connected to a front sealing plate (704) that is stuck in the inner cavity of the recycling port (5).

10. The device for crushing, recycling, and reusing lightweight scrap steel according to claim 9, characterized in that, Several auxiliary holes (705) are provided directly below the recycling port (5) and on the front of the main body (1) of the device. A lower loading slot (706) is provided directly below the auxiliary holes (705) and on the front of the main body (1) of the device. A lower sealing plate (707) is inserted into the inner cavity of the lower loading slot (706). A screening magnetic rod (708) of the same number as the auxiliary holes (705) is fixedly connected to the back of the upper end of the lower sealing plate (707). Synchronous connecting rods (709) are fixedly connected to both sides of the front sealing plate (704) and the lower sealing plate (707) at one end.

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