Metal scrap recycling device

Abstract

This invention provides a metal waste recycling device, relating to the field of metal waste resource utilization technology. It includes a metal recycling chamber with high-strength liners fixedly installed on both the left and right end walls. Two roller cores are installed inside the chamber, with roller sleeves fixedly installed concentrically on each core. The roller core shafts are hollow to allow for hydraulic oil flow. A hydraulic controller connected to the roller core shafts is fixedly installed at the back of the chamber. The device also includes multiple crushing components mounted on the roller cores, a distance adjustment component installed at the back of the chamber to adjust the distance between the two roller cores, and a speed change component installed at the back of the chamber to adjust the rotational speed of the two roller cores. The purpose of this technical solution is to control the output and recovery of hydraulic oil within the roller core shafts via the hydraulic controller, switching between toothed and hammer crushing modes to adapt to different metal waste recycling processes. Simultaneously, the distance adjustment component and speed change component are linked to adjust the distance and rotational speed of the two roller cores, improving efficiency.

Description

Technical Field

[0001] This invention relates to the field of metal waste resource utilization technology, and in particular to a metal waste recycling device. Background Technology

[0002] The sources of metal scrap mainly include processing waste, namely chips and scrap generated during machining; scrapped products, namely dismantling of metal parts from obsolete equipment and scrapped vehicles; and social recycling, namely recycled scrap metal products. Processing waste and scrap metal products are mostly soft scrap sheets and metal cables, while scrapped products are mostly large hard metal blocks.

[0003] Metal scrap recycling is mostly done by crushing the metal scrap with a crusher and then screening it to achieve resource utilization and harmless use. Soft metal scrap plates and metal cables require high torque to shred, while large hard metal blocks require high-speed impact crushing.

[0004] However, due to their crushing characteristics, traditional metal crushers can only crush specific metal scraps (i.e., metals with specific hardness and shape). When crushing different metal scraps, multiple different crushers need to be used to crush them in batches, which is not only inefficient but also increases the cost of metal resource recycling. Summary of the Invention

[0005] The purpose of this invention is to solve the shortcomings of the existing technology, which requires the use of multiple different crushers to crush different metal scraps in batches, resulting in low efficiency and increased cost of metal resource recycling.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a metal waste recycling device, comprising a metal recycling chamber, a feed inlet at the top of the metal recycling chamber guiding the flow to the center, high-strength liners fixedly installed on both the left and right end walls of the metal recycling chamber, two roller cores with interchangeable crushing forms arranged mirror-imagely inside the metal recycling chamber, two slots for the roller core shaft to move horizontally at both the front and rear ends of the metal recycling chamber to adjust the distance after the roller core changes its crushing form, roller sleeves fixedly installed concentrically on the roller core, the shaft of the roller core being hollow to allow hydraulic oil to flow, and a hydraulic controller connected to the shaft of the roller core fixedly installed on the back of the metal recycling chamber, further comprising:

[0007] Multiple crushing components are installed on the roller core. The crushing components have dual crushing modes of tooth crushing and hammer crushing. By switching the crushing mode, different metal waste can be crushed and recycled.

[0008] A pitch adjustment assembly installed on the back of the metal recycling chamber for adjusting the distance between the two roller cores;

[0009] A speed-changing assembly installed on the back of the metal recycling chamber for adjusting the rotational speed of the two roller cores.

[0010] In at least some embodiments, the crushing assembly includes a crushing disc and a hydraulic diverter seat. Both the crushing disc and the hydraulic diverter seat are provided with multiple hydraulically fixedly installed at intervals along the axis of the roller core. The axial surface of the roller core is provided with multiple hydraulic through holes corresponding to the hydraulic diverter seat. The outer circumference of the crushing disc is slidably inserted with toothed heads in a ring array. The hydraulic diverter seat is fixedly installed with multiple first hydraulic telescopic rods and second hydraulic telescopic rods in a ring array. The movable end of the first hydraulic telescopic rod is rotatably mounted with a swing hammer.

[0011] In at least some embodiments, a rotary drive disc is rotatably mounted on both ends of the crushing disc, and a first protrusion is provided on both ends of the tooth. An inclined groove is opened on the rotary drive disc corresponding to the first protrusion, so that the rotary drive disc rotates forward and backward and drives the tooth to move up and down. A connecting rod is rotatably connected between the movable end of the second hydraulic telescopic rod and the rotary drive disc. When the hammer head is extended, the second hydraulic telescopic rod extends and drives the tooth to retract and be stored.

[0012] In at least some embodiments, the roller sleeve has a plurality of first storage holes and second storage holes corresponding to the tooth head and the hammer head, and the first storage holes and second storage holes on the roller sleeve are spaced apart.

[0013] In at least some embodiments, the pitch adjustment assembly includes a pitch adjustment slide, an adjustment seat, and a drive shaft. Two pitch adjustment slides are symmetrically slidably mounted on the back of the metal recycling chamber. A bidirectional hydraulic rod is fixedly mounted on the back of the metal recycling chamber to drive the pitch adjustment slides to move horizontally. The bidirectional hydraulic rod is fixedly connected to a hydraulic controller and is linked to the shaft hydraulic conveying of the roller core. The adjustment seat is fixedly mounted on the top of the pitch adjustment slide. Multiple fixing screw holes are equidistantly opened on the top of the pitch adjustment slide to adjust the fixed distance between the two roller cores to meet the requirements of different crushing particle sizes.

[0014] In at least some embodiments, the adjusting seat has an integrally formed shaft seat, a rotary connector is fixedly mounted on the shaft seat, one end of the roller core passes through the shaft seat and communicates with the rotary connector, a driven bevel gear is fixedly fitted on one end of the roller core shaft, an extended shaft bracket is integrally formed on the shaft seat and a driving bevel gear that meshes with the driven bevel gear is rotatably mounted on the shaft bracket, the drive shaft is rotatably mounted on the metal recycling bin and two shaft brackets are sleeved on the drive shaft, and the drive shaft is provided with a protrusion strip that drives the roller core shaft to rotate when the adjusting seat is horizontally displaced.

[0015] In at least some embodiments, the transmission assembly includes a mounting base, a planetary carrier, a drive gear, a limit pin, a drive sleeve, and a gear plate. The mounting base is fixedly installed on the back of the metal recycling compartment and a gear ring is rotatably mounted concentrically inside it. A motor with a reversing function is fixedly installed on the back of the metal recycling compartment, and a drive gear is fixedly installed on the output shaft of the motor. The drive gear and the gear ring are concentrically arranged. The planetary carrier is fixedly installed on one end of the transmission shaft, and a planetary gear that meshes with the gear ring and the drive gear is rotatably mounted on the planetary carrier.

[0016] In at least some embodiments, the mounting base has an opening at its bottom, the limiting pin is slidably mounted on the bottom of the mounting base, multiple springs are fixedly mounted between the limiting pin and the mounting base, the drive sleeve is rotatably mounted on the back of the metal recovery compartment, the limiting pin is movably inserted into the drive sleeve, two second protrusions are integrally formed at the bottom of the limiting pin, two spiral grooves are provided on the drive sleeve, the second protrusions are slidably mounted in the spiral grooves on the drive sleeve, the toothed plate is fixedly mounted on the adjustable slide block, and a driven gear that meshes with the toothed plate is fixedly sleeved on the drive sleeve.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0018] 1. In this invention, hydraulic oil is controlled to be output and recovered in the roller core shaft by a hydraulic controller. When hydraulic oil is output to the roller core shaft, both the first and second hydraulic telescopic rods extend, the hammer head extends, and the tooth head is driven to retract by a rotating drive disc. After the hammer crushing mode is switched, the tooth crushing mode is switched in the opposite way, so as to adapt to the recycling and processing of metal waste of different hardness (mainly soft metal plates, metal cables and large volume hard metal blocks).

[0019] 2. In this invention, when the hydraulic controller controls the switching between hammer crusher and tooth crusher modes, the bidirectional hydraulic rod is extended and shortened in linkage control, thereby driving the two adjusting seats to move away from or closer to each other, thus controlling the distance between the two roller cores. Furthermore, the active bevel gear and the driven bevel gear are mounted on the adjusting seats, and the active bevel gear is driven to rotate through the convex strip on the transmission shaft, thus enabling mode switching without stopping the machine.

[0020] 3. In this invention, when switching between hammer crushing and tooth crushing modes, the drive sleeve can be rotated in conjunction with the adjusting seat. The forward and reverse rotation of the drive sleeve will cause the limit pin to move up and down, thereby limiting the gear ring in the planetary transmission structure. This changes the transmission ratio between the drive motor and the transmission shaft. In the tooth crushing mode, the limit pin locks the gear ring and the transmission ratio is large, the transmission speed is low but the torque is high. In the hammer crushing mode, the limit pin is unlocked and the transmission ratio is small and the transmission speed is fast. Attached Figure Description

[0021] Figure 1This invention provides an overall three-dimensional schematic diagram of a metal waste recycling device;

[0022] Figure 2 This invention provides a schematic diagram of the back structure of a metal waste recycling device;

[0023] Figure 3 This invention provides a schematic diagram of the internal structure of a metal waste recycling device;

[0024] Figure 4 This invention provides a schematic diagram of the internal structure of the roller core in a metal waste recycling device;

[0025] Figure 5 This invention provides a schematic diagram of the connection between the crushing component and the roller core in a metal waste recycling device;

[0026] Figure 6 This invention provides a schematic diagram of the structure of a crushing component in a metal waste recycling device;

[0027] Figure 7 This invention provides a schematic diagram of the deformation of the roller core in a metal waste recycling device;

[0028] Figure 8 This invention provides a schematic diagram of the structure of the adjustable distance component in a metal waste recycling device;

[0029] Figure 9 This invention provides a schematic diagram of the structure of a speed-changing component in a metal waste recycling device;

[0030] Figure 10 This invention provides a schematic diagram of the connection between the limiting pin and the drive sleeve in a metal waste recycling device.

[0031] Legend: 1. Metal recovery bin; 101. Hydraulic controller; 102. Two-way hydraulic rod;

[0032] 2. Roller core; 201. Roller sleeve; 202. Driven bevel gear;

[0033] 3. Crushing assembly; 301. Crushing disc; 302. Hydraulic diverter seat; 303. Rotary drive disc; 304. Tooth head; 305. First protruding post; 306. First hydraulic telescopic rod; 307. Swing hammer; 308. Second hydraulic telescopic rod; 309. Connecting rod;

[0034] 4. Adjustment assembly; 401. Adjustment slide; 402. Adjustment seat; 403. Drive shaft; 404. Shaft seat; 405. Rotary connector; 406. Drive bevel gear;

[0035] 5. Transmission assembly; 501. Mounting base; 502. Planetary carrier; 503. Drive gear; 504. Limit pin; 505. Drive sleeve; 506. Gear plate; 507. Gear ring; 508. Planetary gear; 509. Spring; 510. Second convex post; 511. Driven gear. Detailed Implementation

[0036] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0037] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0038] Implementation examples, based on Figures 1-10 ,like Figures 1-3 As shown in the figure, the metal waste recycling device provided in this embodiment of the invention includes a metal recycling chamber 1. The top of the metal recycling chamber 1 is provided with a feed inlet that guides the flow to the center, facilitating the material to fall into the crushing area. High-strength liners are fixedly installed on both the left and right end walls of the metal recycling chamber 1. To improve the wear resistance and service life of the chamber, two roller cores 2 with interchangeable crushing modes are arranged in a mirror image inside the metal recycling chamber 1. Two grooves for the axial translation of the roller cores 2 are opened at the front and rear ends of the metal recycling chamber 1 to adjust the distance after the roller cores 2 change their crushing modes. Roller sleeves 201 are fixedly installed on the roller cores 2 concentrically. The shaft of the roller core 2 is hollow to allow for the flow of hydraulic oil. A hydraulic controller 101 connected to the shaft of the roller core 2 is fixedly installed on the back of the metal recycling chamber 1. It also includes multiple crushing components 3 installed on the roller core 2. The crushing components 3 have dual crushing modes of tooth crushing and hammer crushing. By switching the crushing mode, different metal waste can be crushed and recycled. A distance adjustment component 4 installed on the back of the metal recycling chamber 1 is used to adjust the distance between the two roller cores 2 to meet the requirements of different crushing particle sizes. A speed change component 5 installed on the back of the metal recycling chamber 1 is used to adjust the speed of the two roller cores 2 to optimize crushing efficiency and energy consumption.

[0039] like Figures 3-5As shown, the crushing assembly 3 includes a crushing disc 301 and a hydraulic diverter seat 302. Both the crushing disc 301 and the hydraulic diverter seat 302 have multiple hydraulically fixedly installed at intervals along the axis of the roller core 2. The axial surface of the roller core 2 has multiple hydraulic through holes corresponding to the hydraulic diverter seat 302. The outer edge of the crushing disc 301 is slidably connected with toothed heads 304 in a ring array. The hydraulic diverter seat 302 has multiple first hydraulic telescopic rods 306 and second hydraulic telescopic rods 308 fixedly installed in a ring array. A hammer head 307 is rotatably mounted on the movable end of the first hydraulic telescopic rod 306. In the normal state, the first hydraulic telescopic rod 306 and the second hydraulic telescopic rod 308 are in a retracted state. Under the limiting action of the rotating drive disc 303 and the connecting rod 309 on the first protrusion 305, the tooth 304 remains extended outside the crushing disc 301, and the hammer head 307 is in a retracted state and flush with the outer surface of the roller sleeve 201 to avoid interference with the tooth breaking. The two roller cores 2 rotate in opposite directions, and the teeth 304 on the two roller cores 2 are staggered. When recycling soft metal scrap plates or metal cables, a tearing force can be generated to shred them.

[0040] like Figure 6 and Figure 7 As shown, a rotary drive disc 303 is rotatably mounted on both ends of the crushing disc 301. A first protrusion 305 is provided on both ends of the toothed head 304. An inclined groove is provided on the rotary drive disc 303 corresponding to the first protrusion 305, allowing the rotary drive disc 303 to rotate forward and backward and drive the toothed head 304 to move up and down. A connecting rod 309 is rotatably connected between the movable end of the second hydraulic telescopic rod 308 and the rotary drive disc 303. When the hammer head 307 extends, the second hydraulic telescopic rod 308 extends and drives the toothed head 304 to retract and be stored. Multiple first and second storage holes are provided on the roller sleeve 201 corresponding to the toothed head 304 and the hammer head 307. The first and second storage holes on the roller sleeve 201 are spaced apart. When hammer crushing is required, the hydraulic controller 101 changes the oil supply state, and the first hydraulic... The telescopic rod 306 extends, driving the hammer head 307 to swing outward, protruding from the surface of the roller sleeve 201 to form a rotating hammering structure. At the same time, the second hydraulic telescopic rod 308 also extends, driving the rotary drive disk 303 to rotate via the connecting rod 309. The rotation of the rotary drive disk 303 drives the first protrusions 305 at both ends of the tooth head 304 through the inclined groove on the rotary drive disk 303, causing all the tooth heads 304 to retract downward into the crushing disk 301 and be stored away, preventing them from breaking or being damaged during the hammering process. The retracted tooth heads 304 are stored in the corresponding first storage hole in the roller sleeve 201. The first storage hole and the second storage hole on the roller sleeve 201 are spaced apart to ensure that they do not interfere with each other during storage and operation, thus achieving the crushing and recycling of large hard metal blocks.

[0041] like Figure 8As shown, the pitch adjustment assembly 4 includes a pitch adjustment slide 401, an adjustment seat 402, and a drive shaft 403. Two pitch adjustment slides 401 are symmetrically slidably mounted on the back of the metal recycling chamber 1. A bidirectional hydraulic rod 102 is fixedly mounted on the back of the metal recycling chamber 1 to drive the pitch adjustment slide 401 to move horizontally. The bidirectional hydraulic rod 102 is fixedly connected to the hydraulic controller 101 and links to the shaft hydraulic conveying of the roller core 2. The adjustment seat 402 is fixedly mounted on the top of the pitch adjustment slide 401. Multiple fixing screw holes are equidistantly opened on the top of the pitch adjustment slide 401 for adjusting the pitch of the two roller cores 2. To achieve different crushing particle sizes, a fixed spacing is used. An integrally formed shaft seat 404 is mounted on the adjusting seat 402, and a rotary connector 405 is fixedly installed on the shaft seat 404. One end of the roller core 2 passes through the shaft seat 404 and communicates with the rotary connector 405. A driven bevel gear 202 is fixedly fitted onto one end of the roller core 2's shaft. An integrally formed protruding shaft bracket is mounted on the shaft seat 404, and a driving bevel gear 406, meshing with the driven bevel gear 202, is rotatably mounted on the shaft bracket. The drive shaft 403 is rotatably mounted on the metal recycling chamber 1, and two shaft brackets are fitted onto the drive shaft 403. The drive shaft 403 is equipped with a convex strip that drives the shaft of the roller core 2 to rotate when the adjusting seat 402 is horizontally displaced. When switching between toothed crushing and hammer crushing modes, the distance between the two roller cores 2 needs to be adjusted because the lengths of the toothed head 304 and the hammer head 307 are different. Therefore, the two adjusting seats 402 are driven to translate by a bidirectional hydraulic rod 102 linked to the internal oil circuit of the roller core 2 shaft. In normal toothed crushing mode, the bidirectional hydraulic rod 102 is in a retracted state, and the drive shaft 403 rotates through two driving bevel gears 406 and two driven bevel gears 2. The meshing action of 02 drives the two roller cores 2 to rotate towards the center. When switching to the hammer crushing mode, the bidirectional hydraulic rod 102, in conjunction with the first hydraulic telescopic rod 306 and the second hydraulic telescopic rod 308, extends, and the two adjusting seats 402 move away from each other, thereby driving the two roller cores 2 to move away to meet the hammer crushing requirements of the long swing hammer head 307. It is worth noting that the active bevel gear 406 and the driven bevel gear 202 are mounted on the adjusting seat 402, and the active bevel gear 406 is driven to rotate through the convex strip on the transmission shaft 403, thus enabling mode switching without stopping the machine.

[0042] like Figure 9As shown, the transmission assembly 5 includes a mounting base 501, a planetary carrier 502, a drive gear 503, a limit pin 504, a drive sleeve 505, and a gear plate 506. The mounting base 501 is fixedly installed on the back of the metal recycling bin 1, and a gear ring 507 is rotatably mounted concentrically inside it. A motor with a reversing function is fixedly installed on the back of the metal recycling bin 1, and the output shaft of the motor is fixedly installed with the drive gear 503. The drive gear 503 and the gear ring 507 are concentrically arranged. The planetary carrier 502 is fixedly installed on one end of the drive shaft 403. Planetary carrier 502 is rotatably mounted with planetary gear 508, which meshes with gear ring 507 and drive gear 503. In the tooth crushing mode, the motor drives the drive gear 503 to rotate. The drive gear 503 drives the planetary carrier 502 to rotate through meshing with planetary gear 508. The gear ring 507 is limited by the limiting pin 504 and does not rotate. Therefore, the transmission ratio of planetary carrier 502 is large, the speed of planetary carrier 502 is low and the torque is greater, which is suitable for the high torque requirements of tooth crusher.

[0043] like Figure 10As shown, the mounting base 501 has an opening at its bottom. A limiting pin 504 is slidably mounted on the bottom of the mounting base 501. Multiple springs 509 are fixedly installed between the limiting pin 504 and the mounting base 501. The drive sleeve 505 is rotatably mounted on the back of the metal recycling bin 1. The limiting pin 504 is movably inserted into the drive sleeve 505. Two second protrusions 510 are integrally formed at the bottom of the limiting pin 504. Two spiral grooves are provided on the drive sleeve 505. The second protrusions 510 are slidably mounted in the spiral grooves on the drive sleeve 505. The toothed plate 506 is fixedly mounted on the adjusting slide block 401. A toothed plate 506 is fixedly sleeved on the drive sleeve 505 and engages with the toothed plate 506. The driven gear 511, in the hammer crusher mode, the adjusting seat 402 translates and drives the drive sleeve 505 to rotate through the meshing action of the toothed plate 506 and the driven gear 511. The rotation of the drive sleeve 505 limits the second protrusion 510 through the spiral groove. The limiting pin 504 slides down against the elastic force of the spring 509, thereby unlocking the gear ring 507. At this time, the rotation of the driving gear 503 will drive the planetary gear 508 and the gear ring 507 to rotate, which essentially changes the transmission ratio of the planetary gear 508 mechanism (the transmission ratio becomes smaller), thereby changing the output speed of the planetary carrier 502 (i.e., the drive shaft 403), which is suitable for the high speed requirement of the hammer crusher. This design achieves linkage between roller gap adjustment and roller speed adjustment. When the roller gap is increased (a larger roller gap and lower speed may be needed to process large or difficult-to-crush materials), the linkage mechanism automatically selects a lower speed gear. When the roller gap is decreased (a smaller roller gap and higher speed may be needed to pursue finer particle size or process fragile materials), the linkage mechanism automatically selects a higher speed gear. Furthermore, the rotation direction of the motor is different in hammer crushing and tooth crushing states. In tooth crushing state, the motor drives the two roller cores 2 to rotate towards the center, tearing and crushing the metal waste in the center. In hammer crushing state, the motor drives the two roller cores 2 to rotate outward. After the hard metal waste falls into the center of the metal recycling chamber 1, the high-speed impact of the hammer head crushes the metal waste and throws the metal waste onto the weighing plates on both sides of the inner wall of the metal recycling chamber 1 for secondary crushing.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A metal waste recycling device, comprising a metal recycling bin (1), characterized in that: The metal recycling chamber (1) has a feed inlet at the top that guides the flow to the center. High-strength liners are fixedly installed on both the left and right end walls of the metal recycling chamber (1). Two roller cores (2) with changeable crushing modes are arranged in a mirror image inside the metal recycling chamber (1). Two slots for the shaft translation of the roller cores (2) are opened at the front and rear ends of the metal recycling chamber (1) to adjust the distance after the roller cores (2) change their crushing modes. Roller sleeves (201) are fixedly installed on the roller cores (2) in a concentric circle. The shaft of the roller cores (2) is hollow to allow hydraulic oil to flow. A hydraulic controller (101) connected to the shaft of the roller cores (2) is fixedly installed on the back of the metal recycling chamber (1). The chamber also includes: Multiple crushing components (3) are installed on the roller core (2). The crushing components (3) have both tooth crushing and hammer crushing modes. By switching the crushing modes, different metal wastes can be crushed and recycled. The crushing assembly (3) includes a crushing disc (301) and a hydraulic diverter seat (302). Both the crushing disc (301) and the hydraulic diverter seat (302) are provided with multiple hydraulic through holes fixedly installed at intervals along the axis of the roller core (2). The axial surface of the roller core (2) is provided with multiple hydraulic through holes corresponding to the hydraulic diverter seat (302). The outer edge of the crushing disc (301) is slidably inserted with toothed heads (304) in an annular array. The hydraulic diverter seat (302) is fixedly installed with multiple first hydraulic telescopic rods (306) and second hydraulic telescopic rods (308) in an annular array. The movable end of the first hydraulic telescopic rod (306) is rotatably installed with a swing hammer head (307). Both ends of the crushing disc (301) are rotatably mounted with a rotary drive disc (303), and both ends of the tooth (304) are provided with a first protrusion (305). The rotary drive disc (303) has an inclined groove corresponding to the first protrusion (305) so that the rotary drive disc (303) rotates forward and backward and drives the tooth (304) to move up and down. The movable end of the second hydraulic telescopic rod (308) is rotatably connected to the rotary drive disc (303) with a connecting rod (309). When the hammer head (307) extends, the second hydraulic telescopic rod (308) extends and drives the tooth (304) to retract and be stored. A pitch adjustment assembly (4) is installed on the back of the metal recycling chamber (1) to adjust the distance between the two roller cores (2). The pitch adjustment assembly (4) includes a pitch adjustment slide (401), an adjustment seat (402), and a drive shaft (403). Two pitch adjustment slides (401) are provided and symmetrically slidably installed on the back of the metal recycling chamber (1). A bidirectional hydraulic rod (102) is fixedly installed on the back of the metal recycling chamber (1) to drive the pitch adjustment slide (401) to move horizontally. The bidirectional hydraulic rod (102) is fixedly connected to the hydraulic controller (101) and linked to the shaft hydraulic conveying of the roller core (2). The adjustment seat (402) is fixedly installed on the top of the pitch adjustment slide (401). Multiple fixing screw holes are equally spaced on the top of the pitch adjustment slide (401) to adjust the fixed distance between the two roller cores (2) to meet the requirements of different crushing particle sizes. A speed-changing assembly (5) installed on the back of the metal recycling chamber (1) for adjusting the rotational speed of the two roller cores (2); The transmission assembly (5) includes a mounting base (501), a planetary carrier (502), a drive gear (503), a limiting pin (504), a drive sleeve (505), and a gear plate (506). The mounting base (501) is fixedly installed on the back of the metal recycling bin (1) and a gear ring (507) is rotatably mounted inside it. A motor with a reversing function is fixedly installed on the back of the metal recycling bin (1), and a drive gear (503) is fixedly installed on the output shaft of the motor. The drive gear (503) and the gear ring (507) are arranged co-centered. The planetary carrier (502) is fixedly installed on one end of the transmission shaft (403), and a planetary gear (508) is rotatably mounted on the planetary carrier (502) and meshes with the gear ring (507) and the drive gear (503). The mounting base (501) has an opening at the bottom. The limiting pin (504) is slidably mounted on the bottom of the mounting base (501). Multiple springs (509) are fixedly installed between the limiting pin (504) and the mounting base (501). The drive sleeve (505) is rotatably mounted on the back of the metal recycling bin (1). The limiting pin (504) is movably inserted into the drive sleeve (505). The bottom of the limiting pin (504) has two second protrusions (510) integrally formed. The drive sleeve (505) has two spiral grooves. The second protrusions (510) are slidably mounted in the spiral grooves on the drive sleeve (505). The toothed plate (506) is fixedly mounted on the adjustable slide block (401). The drive sleeve (505) is fixedly fitted with a driven gear (511) that meshes with the toothed plate (506).

2. The metal waste recycling device according to claim 1, characterized in that: The roller sleeve (201) has multiple first and second storage holes corresponding to the tooth head (304) and the hammer head (307), and the first and second storage holes on the roller sleeve (201) are spaced apart.

3. The metal waste recycling device according to claim 1, characterized in that: The adjusting seat (402) has an integrally formed bearing seat (404), and a rotary connector (405) is fixedly installed on the bearing seat (404). One end of the roller core (2) passes through the bearing seat (404) and communicates with the rotary connector (405). A driven bevel gear (202) is fixedly fitted on one end of the shaft of the roller core (2). An extended shaft bracket is integrally formed on the bearing seat (404), and an active bevel gear (406) that meshes with the driven bevel gear (202) is rotatably installed on the shaft bracket. The transmission shaft (403) is rotatably installed on the metal recycling chamber (1), and two shaft brackets are sleeved on the transmission shaft (403). The transmission shaft (403) is provided with a protrusion strip that drives the shaft of the roller core (2) to rotate when the adjusting seat (402) is in horizontal displacement.

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