Rubber crusher for recycling waste tires

Abstract

The application relates to the technical field of waste tire recycling, and discloses a rubber crusher for waste tire recycling, which comprises a box body, a glue outlet and a miscellaneous outlet are arranged on the box body, a crushing mechanism is arranged in the box body, the crushing mechanism comprises an adjusting assembly and at least two crushing rollers, the crushing rollers are connected with a driving assembly one, a plurality of adjusting grooves are evenly arranged on the circumferential side of the crushing rollers, the adjusting grooves are movably assembled with the adjusting assembly and crushing teeth, one side of the adjusting grooves towards the shaft center of the crushing rollers is an inner side, the outer side of the adjusting grooves is a spherical groove body, the inner side of the adjusting grooves is an arc-shaped groove body, the adjusting assembly comprises an adjusting block and an elastic piece, the adjusting block is rotatable in the spherical groove body of the adjusting groove, the crushing teeth are eccentrically arranged relative to the adjusting block and are in sliding connection with the adjusting block, and the inner side end of the crushing teeth is connected with the elastic piece. The pulverizer can effectively strip and separate the rubber and the internal steel wire in the waste tire, and can improve the recycling purity of the rubber while protecting the crushing teeth.

Description

Technical Field

[0001] This invention relates to the technical field of waste tire recycling and processing equipment, specifically to a rubber shredder for waste tire recycling. Background Technology

[0002] Recycling waste tires is a crucial step in resource regeneration. Their main components are rubber, carbon black, and steel wires that provide structural support (such as bead wires and belt layer wires). Before waste tires can be converted into rubber granules or powder for reuse in production, they need to be crushed to ensure complete separation of the rubber from internal impurities such as steel wires.

[0003] Patent document CN121018802B discloses a device and method for comprehensive treatment of solid waste, including a support frame, a feeding frame fixedly installed on the support frame, and a square rod. The square rod is prism-shaped, and two first rotating wheels are slidably installed on the outer wall of the square rod. The outer wall of the first rotating wheels has a second annular groove, and the inner wall of the second annular groove is slidably connected to a second guide rod. The outer wall of the second guide rod is fixedly connected to a first guide rod. The beneficial effect of this invention is that during the movement of the square rod, multiple paddles rotate and paddle while scraping plastic granules. The rotation angle of the paddles allows them to still scrape and flatten plastic granules even when the depth of the plastic granules is higher than the paddles.

[0004] Traditional tire shredding equipment typically uses hard shearing or tearing to directly shred tire rubber blocks containing steel wires, and then separates them using methods such as magnetic separation. This method has significant drawbacks: firstly, the large and extremely hard steel wires easily cause wear and even chipping of the shredding blades, leading to high equipment maintenance costs; secondly, because the rubber and steel wires are vulcanized and bonded extremely tightly during manufacturing, conventional shredding methods cannot completely peel off the rubber adhering to the surface of the steel wires, resulting in the separated steel wires often having a large amount of "raw rubber," which not only reduces the value of the steel wires as scrap steel but also causes a serious waste of rubber raw materials.

[0005] Therefore, there is an urgent need in related technologies for a crushing and separation device that can adapt to the differences in material hardness, effectively crush rubber, protect the blades from continuously cutting steel wire, and forcibly scrape off the rubber layer attached to the surface of the steel wire. Summary of the Invention

[0006] This invention provides a rubber shredder for recycling waste tires, aiming to solve the problems in related technologies where the blades of waste tire shredding devices are easily damaged and the separation and peeling effect between rubber and steel wire is poor when processing rubber blocks containing steel wire.

[0007] The present invention discloses a rubber shredder for recycling waste tires, comprising a housing, a rubber outlet at the bottom of the housing, a waste outlet on the side of the housing, and a shredding mechanism inside the housing, the shredding mechanism comprising:

[0008] The crushing roller is provided in the housing. At least two crushing rollers are provided in the housing. One end of the crushing roller is opposite to the feed end of the housing and the other end of the crushing roller is opposite to the discharge port. The crushing roller is connected to a drive assembly for driving it to rotate synchronously. Several adjustment grooves are evenly opened on the periphery of the crushing roller. Each adjustment groove is movably equipped with an adjustment assembly and crushing teeth. With the side facing the center of the crushing roller shaft as the inner side, the outer side of the adjusting groove is a spherical groove, and the inner side of the adjusting groove is an arc-shaped groove. The adjusting assembly includes an adjusting block and an elastic element. The adjusting block rotates in contact with the spherical groove of the adjusting groove. The crushing tooth is eccentrically set relative to the adjusting block and slides in cooperation with the adjusting block. The inner end of the crushing tooth is connected to the elastic element. The elastic element moves in contact with the inner end face of the adjusting groove. When the crushing tooth is squeezed into the adjusting groove, it swings in the direction towards the discharge port.

[0009] The beneficial effects are: it greatly improves the separation effect of rubber and steel wire in waste tires and extends the life of the crushing teeth. When crushing tire rubber blocks, the crushing teeth are positioned relative to the crushing roller according to the different hardness of the rubber and steel wire. When the crushing teeth contact the softer rubber, they can easily penetrate and tear the rubber into powder; when they contact the extremely hard steel wire, the crushing teeth are pressed back into the adjusting groove, avoiding damage to the blades caused by hard impact. More ingeniously, when the crushing teeth retract into the adjusting groove, under the action of the eccentric adjusting block and elastic element, the tip of the crushing teeth swings and forcibly scrapes along the surface of the steel wire, effectively peeling off and scraping away the rubber layer tightly attached to the steel wire surface, significantly improving the rubber recovery rate and obtaining high-purity steel wire.

[0010] Preferably, the elastic element includes a spring and a connecting block. One end of the spring is connected to the breaking tooth, and the other end of the spring is connected to the connecting block. The inner side of the adjusting groove is also provided with a guide groove. The inner end face of the connecting block is arc-shaped, and the connecting block slides in conjunction with the inner end face of the adjusting groove or the guide groove.

[0011] The beneficial effects are: improving the flexibility of the connection between the crushing tooth and the adjusting groove; when the crushing tooth is subjected to hard compression by the steel wire, it simultaneously compresses the spring and pushes the connecting block to smoothly extend into the guide groove.

[0012] Preferably, the adjusting block is provided with a sliding groove, the crushing tooth slides in the sliding groove, the crushing tooth includes a tooth and a connecting part, the tooth is located outside the connecting part, the tooth slides in the connecting part, and the crushing roller is also provided with a power storage component for pushing the tooth relative to the connecting part to slide.

[0013] Preferably, a connecting rod is fixed to the end of the tooth that is opposite to the connecting part. The connecting rod is slidably engaged with the connecting part and extends to the inner side of the connecting part. The energy storage component is used to push the connecting rod to slide relative to the connecting part.

[0014] Preferably, the energy storage component includes: The movable rod is located inside the adjustment groove. The movable rod slides in a direction parallel to the axial direction of the crushing roller. The movable rod is provided with a number of connecting grooves that are one-to-one with the adjustment groove along its axial direction. A push rod, the inner end of which is slidably engaged with the connecting groove, the outer end of which extends into the adjusting groove and is slidably engaged with the adjusting groove along its length, and a storage spring is sleeved on the part of the push rod in the connecting groove, and the movable rod compresses the storage spring when it moves in the direction close to the outlet. The limiting structure has the same number as the push rod, and the limiting structure is used to restrict the push rod from sliding relative to the adjusting groove during the charging process of the charging spring.

[0015] Preferably, the limiting structure includes a limiting groove, a limiting spring, and a "U"-shaped limiting push block. The open end of the limiting push block faces the connecting groove. The shape of the limiting groove matches the shape of the limiting push block. The limiting push block is installed in the limiting groove by the limiting spring. The outer end of the limiting push block extends to the inner side of the adjusting groove and abuts against the adjusting block. The outer end of the push rod is provided with a limiting slot. The inner end of the limiting push block is movably inserted into the limiting slot.

[0016] The beneficial effects are as follows: by setting up a power storage component, the instantaneous speed and impact force when the crusher tooth pops out of the self-adjusting groove can be further improved. When the crusher tooth resets after scraping the steel wire, the powerful instantaneous explosive force can further tear the stubbornly attached rubber and increase the force that pushes the exposed steel wire toward the discharge port, preventing the strip steel wire from getting tangled or accumulating in the box.

[0017] Preferably, one end of the movable rod is elastically connected to the crushing roller, and the other end of the movable rod is in movable contact with the inner wall of the box. The inner wall of the box is also provided with a push block, and the movable rod and the push block abut against each other at intervals. When the movable rod abuts against the push block, the movable rod slides along its axial direction.

[0018] Preferably, each of the crushing teeth is uniformly arranged along both the circumferential and axial directions of the crushing roller, and each movable rod connected to the same crushing roller is uniformly arranged circumferentially inside the crushing roller.

[0019] Preferably, each of the crushing rollers is further provided with a turning mechanism on its upper side. The turning mechanism includes a drive shaft, a paddle, and a second drive assembly. There are at least two drive shafts, and each drive shaft is provided with a plurality of paddles spirally arranged on it. The second drive assembly drives each drive shaft to rotate synchronously.

[0020] The beneficial effects are: further improving the all-round peeling effect of the rubber layer covering the steel wire. During the crushing process, the turning mechanism continuously turns and turns the intertwined tire blocks and long steel wires, so that different sides of the steel wire can make scraping contact with the oscillating crushing teeth below, avoiding dead corners in the peeling process and ensuring that the steel wire discharged from the impurity outlet is extremely clean.

[0021] Preferably, the height of each of the crushing rollers decreases in the direction toward the impurity outlet.

[0022] The beneficial effect is that by utilizing the combined action of gravity and the pushing force of the teeth, the unbroken strip or coil hard steel wires are prevented from accumulating in dead corners inside the box, allowing them to slide smoothly along the slope to be discharged from the waste outlet.

[0023] The beneficial effects of this invention are as follows: 1. The machine innovatively utilizes a mechanical structure that breaks when encountering soft materials and retracts when encountering hard materials, allowing it to easily tear apart the softer rubber when shredding waste tires. When encountering high-hardness steel wire, the crushing teeth actively retract and contract, greatly protecting the blades from physical damage. Furthermore, the eccentric oscillation mechanism during the retraction of the crushing teeth causes the pointed ends to scrape along the steel wire surface like a "scraper," removing the most difficult-to-treat attached rubber layer, achieving deep stripping and purification of the rubber and fibers from waste tires.

[0024] 2. Combined with the upper material turning mechanism and the internal energy-saving ejection mechanism, it ensures that the material is turned over at multiple angles, so that the steel wire surface is not scratched and peeled off without dead corners; on the other hand, it provides a dynamic thrust to quickly push the long strips and irregular strips of peeled steel wire to the outlet, avoiding the "roller wrapping" and internal blockage phenomenon commonly found in steel wires in tires, and greatly improving the efficiency of continuous operation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the connection structure of the box body, crushing roller and drive assembly in this invention.

[0027] Figure 3 This is a schematic diagram of the connection structure between the drive component and the crushing roller in this invention.

[0028] Figure 4 This is a schematic diagram of the crushing roller in this invention.

[0029] Figure 5 This is a schematic diagram of the connection structure between the limiting structure, the adjusting groove, and the push rod in this invention.

[0030] Figure 6 This is a schematic diagram of the connection structure between the power storage component and the adjustment component and the crushing tooth in this invention.

[0031] Figure 7 This is a schematic diagram of the connection structure between the crushing tooth and the adjusting block in this invention.

[0032] Figure 8 This is a schematic diagram of the internal structure of the adjusting block in this invention.

[0033] Figure 9 This is a schematic diagram of the structure in which the adjusting groove is opened relative to the crushing roller in this invention.

[0034] Figure label: 1. Box body; 11. Feed inlet; 12. Impurity outlet; 13. Glue outlet; 14. Frame; 15. Push block; 2. Crushing roller; 21. Crushing tooth; 211. Tooth section; 212. Connecting part; 213. Connecting rod; 22. Elastic element; 23. Adjusting block; 24. Adjusting groove; 25. Guide groove; 3. Movable rod; 31. Connecting groove; 32. Push rod; 321. Storage spring; 322. Limiting slot; 33. Limiting push block; 331. Limiting spring; 332. Limiting groove; 4. Drive source one; 41. Drive wheel one; 42. Transmission belt one; 5. Drive shaft; 51. Paddle; 52. Drive source two; 53. Drive wheel two; 54. Transmission belt two. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] like Figure 1 and Figure 2 As shown, the rubber shredder for waste tire recycling of the present invention includes a housing 1, a rubber outlet 13 at the bottom of the housing 1, a debris outlet 12 on the side of the housing 1, a crushing mechanism inside the housing 1, and a feed inlet 11 on the housing 1. To improve the relative uniformity of feeding, a feed guide plate is also provided at the feed inlet 11, and the position of the feed inlet 11 is opposite to the debris outlet 12. Waste tires (or pre-cut waste tire rubber blocks) enter the housing 1 through the feed inlet 11. The crushing mechanism inside the housing 1 crushes the entering waste tire rubber blocks. The crushed and peeled rubber particles are discharged from the rubber outlet 13 on the lower side of the crushing mechanism. Hard impurities such as steel wires (such as bead wires and belt layer coarse steel wires) in the waste tires that are extremely hard and cannot be crushed are discharged from the debris outlet 12.

[0037] like Figure 3 and Figure 4 As shown, the crushing mechanism includes crushing rollers 2, a drive assembly 1, and an adjustment assembly. At least two crushing rollers 2 are housed within the housing 1, arranged side-by-side. Preferably, there are three or four crushing rollers 2. The drive assembly 1 drives each crushing roller 2 to rotate synchronously. One end of each crushing roller 2 is adjacent to the feed inlet 11, and the other end is adjacent to the waste outlet 12. Several crushing teeth 21 are evenly arranged on the crushing roller 2 along its axial and circumferential directions. When the crushing roller 2 rotates, the crushing teeth 21 contact the tire rubber and tear and crush the rubber layer. Because waste tires contain a certain proportion of high-hardness steel wires used for skeleton support, and the rubber and steel wires undergo a tight vulcanization bond during production, if the entire tire is subjected to hard shredding, not only will the blades experience extreme wear, but the short steel wires and rubber after shredding will also be extremely difficult to separate. To facilitate the purification and separation of the internal steel wires and rubber, the rubber shredder provided in this embodiment, based on the significant hardness difference between the rubber and steel wires in the tire, only tears and crushes the softer rubber, and forcibly peels off the rubber layer attached to the surface of the steel wires through a mechanical scraping action during the crushing process, thereby achieving separation.

[0038] like Figures 5 to 9 As shown, to achieve the above operation, each crushing tooth 21 is connected to the crushing roller 2 via an adjustment component. The adjustment component is used to dynamically adjust the state of the crushing tooth 21 relative to the crushing roller 2 during the crushing process. This ensures that when the crushing tooth 21 contacts the tire rubber block, it can extend normally and penetrate and tear the softer rubber part, with the crushed rubber fragments and particles falling from the gap between adjacent crushing rollers 2. When the crushing tooth 21 contacts the extremely hard steel wire, the crushing tooth 21 is squeezed back into the crushing roller 2, without forcibly cutting the steel wire, thus protecting the crushing tooth 21 from chipping. To facilitate the separation of the stripped steel wire, the gap between adjacent crushing rollers 2 can be set smaller than the size of a complete tire bead or a clump of coarse steel wire, so that the rubber part in the tire is crushed into smaller particles and falls smoothly from the gap between the crushing rollers 2, while the long strips or coils of steel wire that cannot be crushed gradually move along the crushing roller 2 to the waste outlet 12 and are discharged from the waste outlet 12.

[0039] The crushing roller 2 has several adjusting grooves 24 on its circumference, and each crushing tooth 21 is assembled with each adjusting groove 24 in a corresponding manner through an adjusting assembly. Taking the side facing the axis of the crushing roller 2 as the inner side, the outer side of the adjusting groove 24 is spherical, and an opening for the crushing tooth 21 to extend is provided on the outer side of the adjusting groove 24. The inner side of the adjusting groove 24 is arc-shaped. The adjusting assembly includes an adjusting block 23 and an elastic element 22. The adjusting block 23 is spherical, opposite to the outer side of the adjusting groove 24, and can rotate within the spherical groove of the adjusting groove 24 without disengaging from it. A sliding groove is provided on the adjusting block 23, through which the crushing tooth 21 slides in contact with the adjusting block 23. The outer end of the crushing tooth 21 is shaped like a sharp tooth, facilitating the tearing of rubber. To assist the stripped steel wire in moving towards the discharge port 12, the crushing tooth 21 is eccentrically positioned relative to the adjusting block 23, meaning the axial direction of the crushing tooth 21 is offset from the axial direction of the adjusting block 23, with the side facing the discharge port 12 as the rear side. The axis of the adjusting block 23 is located behind the axis of the crushing tooth 21. An elastic element 22 is connected to the crushing tooth 21. The elastic element 22 may include a spring and a connecting block. One end of the spring is fixed to the inner end of the crushing tooth 21, and the other end of the spring is connected to the connecting block. The connecting block movably abuts against the inner end face of the adjusting groove 24. The connecting block, which abuts against the side wall of the adjusting groove 24, is arc-shaped. A guide groove 25 is also provided inside the adjusting groove 24 so that when the crushing tooth 21 is squeezed back into the adjusting groove 24 by the hard steel wire, the connecting block slides against the guide groove 25. In other words, the connecting block can slide against the inner side of the adjusting groove 24 or the guide groove 25.

[0040] like Figure 1 and Figure 3 As shown, a drive assembly is located on the outside of the housing 1. The drive assembly includes a drive source 4, drive wheels 41, and a transmission belt 42. The end of each crushing roller 2 facing the feed inlet 11 is rotatably connected to the housing 1 via a connecting shaft. Each connecting shaft extends to the outside of the housing 1, and each connecting shaft is connected to a drive wheel 41 outside the housing 1. A transmission belt 42 is fitted onto any two adjacent drive wheels 41. The drive end of the drive source 4 is connected to any drive wheel 41. The drive source 4 can be a motor. When the drive source 4 is working, it drives the drive wheel 41 connected to it to rotate, and drives the other drive wheels 41 to rotate synchronously through the transmission belt 42, ultimately achieving the purpose of driving each crushing roller 2 to rotate synchronously.

[0041] When waste tire rubber blocks fall into the crushing mechanism through the feed inlet 11, the drive assembly drives each crushing roller 2 to rotate, and the crushing teeth 21 come into contact with the tire rubber blocks. Because the steel wire is much harder than the rubber, by selecting a spring with a suitable elastic coefficient, the crushing teeth 21 can maintain a normal extended state when they come into contact with the softer rubber layer, and can penetrate and tear the rubber. When the crushing teeth 21 cut into and contact the inner steel wire, due to the extreme hardness of the steel wire, the crushing teeth 21 are squeezed and retract into the adjusting groove 24. Because the crushing teeth 21 and the adjusting block 23 are eccentrically set, when the crushing teeth 21 are retracted and compressed, their pointed ends will swing eccentrically towards the discharge port 12, and during the swinging process, they will strongly laterally scrape against the surface of the steel wire, thereby scraping off the vulcanized "rough rubber" that is tightly attached to the surface of the steel wire.

[0042] Furthermore, the rotation of the crushing roller 2 continuously compresses and tumbles the material, causing the tire rubber blocks falling into the housing 1 and the undischarged steel wires to be in constant motion on the multiple crushing rollers 2. Simultaneously, as the crushing teeth 21 retract into the adjusting groove 24, they swing towards the discharge port 12, causing each time they encounter a hard steel wire, they exert a pushing force towards the discharge port 12. This causes the entangled steel wires to continuously move towards the discharge port 12. During this movement, the steel wires continuously contact the densely packed crushing teeth 21 on the crushing roller 2, and each crushing tooth 21 repeatedly and forcefully scrapes the rubber layer on the surface of the steel wire, greatly reducing the amount of rubber adhering to the steel wire discharged from the discharge port 12 and improving the purity of the recovered steel wire.

[0043] In other embodiments, to enhance the force with which the crushing teeth 21 move the steel wire and the explosive force for peeling off the "rough rubber," a power storage component is also provided inside the crushing roller 2. The crushing teeth 21 include a tooth portion 211 and a connecting portion 212. The tooth portion 211 is located outside the connecting portion 212, and the tooth portion 211 slides in engagement with the connecting portion 212. A connecting rod 213 is connected to the end of the tooth portion 211 opposite to the connecting portion 212. The connecting rod 213 passes through the connecting portion 212 and slides in engagement with the connecting portion 212. One end of the connecting rod 213 is fixed to the tooth portion 211, and the other end of the connecting rod 213 extends to the inside of the connecting portion 212. The power storage component is used to instantly push the connecting rod 213 to slide relative to the connecting part 212. When the power storage component pushes the connecting rod 213 to slide, it can instantly increase the impact force of the tooth 211 extending relative to the adjustment groove 24 (such as a catapult action), and at the same time increase the overall length of the tooth 211 and the connecting part 212 to increase the force that moves the long strip of steel wire toward the outlet 12, preventing it from getting tangled.

[0044] like Figure 5 and Figure 6As shown, the power storage assembly includes a movable rod 3, a push rod 32, and a limiting structure. The movable rod 3 slides along the direction parallel to the axial direction of the crushing roller 2, and has several connecting grooves 31 spaced along its axial direction, which are opposite to the inner side of the adjusting groove 24. One end of the movable rod 3 is elastically connected to the crushing roller 2 (the movable rod 3 can be specifically connected to the crushing roller 2 via a spring), and the other end of the movable rod 3 is in contact with the inner wall of the housing 1. A push block 15 is also provided on the inner wall of the housing 1, and the movable rod 3 abuts against the push block 15 at intervals. When the movable rod 3 abuts against the push block 15, the movable rod 3 slides in the direction close to the discharge port 12; after the movable rod 3 and the push block 15 are misaligned, the movable rod 3 returns to its original position under the elastic force of the spring. Multiple movable rods 3 are provided on the same crushing roller 2, and each movable rod 3 connected to the same crushing roller 2 is evenly arranged along the circumference of the crushing roller 2. When the crushing roller 2 rotates, each movable rod 3 on the crushing roller 2 contacts the push block 15 at intervals.

[0045] The inner end of the push rod 32 slides into the connecting groove 31, and the outer end of the push rod 32 extends into the adjusting groove 24 and slides into the adjusting groove 24 along its length. A storage spring 321 is fitted onto the portion of the push rod 32 within the connecting groove 31. When the movable rod 3 moves towards the outlet 12, it compresses the storage spring 321, causing it to accumulate power. To achieve this, an inclined surface abutting against the upper end of the storage spring 321 can be provided within the connecting groove 31. The height of the inclined surface increases towards the outlet 12, meaning that as the movable rod 3 moves towards the outlet 12, the inclined surface gradually compresses the storage spring 321, accumulating power. The number of limiting structures is the same as the number of push rods 32. These limiting structures restrict the sliding of the push rod 32 relative to the adjusting groove 24 during the storage process of the storage spring 321, allowing the storage spring 321 to quickly eject the push rod 32 from the adjusting groove 24 and cause a strong collision with the connecting rod 213 when the storage is released.

[0046] Specifically, the limiting structure includes a limiting groove 332, a limiting spring 331, and a U-shaped limiting push block 33. The open end of the limiting push block 33 faces the connecting groove 31. The shape of the limiting groove 332 matches the shape of the limiting push block 33. The limiting push block 33 is installed in the limiting groove 332 by the limiting spring 331. The outer end of the limiting push block 33 extends to the inner side of the adjusting groove 24 and abuts against the adjusting block 23. The outer end of the push rod 32 is provided with a limiting slot 322, and the inner end of the limiting push block 33 is movably inserted into the limiting slot 322.

[0047] When the steel wire inside the tire squeezes the crushing tooth 21, the crushing tooth 21 swings towards the discharge port 12 and retracts into the adjusting groove 24. The adjusting block 23 abuts against the outer end of the limiting push block 33, and the limiting push block 33 squeezes the limiting spring 331. The inner end of the limiting push block 33 disengages from the limiting slot 322 of the push rod 32, allowing the push rod 32 to slide smoothly relative to the adjusting groove 24. In this state, the connecting rod 213 and the push rod 32 are offset, and the push rod 32 will not collide with the connecting rod 213 when sliding. When the steel wire rolls or moves to the front of the crushed tooth 21, the crushing tooth 21 is no longer subjected to the strong squeezing action of the steel wire and swings out in the opposite direction to its retraction into the adjusting groove 24. During this process, the connecting rod 213 gradually aligns with the push rod 32. When the connecting rod 213 and the push rod 32 are aligned, the push rod 32 slides rapidly relative to the adjusting groove 24 under the release of the storage spring 321 and collides strongly with the connecting rod 213. This instantaneous push causes the tooth 211 to rapidly elongate and move away from the connecting part 212, which not only greatly increases the overall length and speed of the breaking tooth 21 extending out of the adjustment groove 24, but also gives the tooth tip a powerful tearing impact force, causing it to instantly tear the stubborn rubber layer and fully push the adjacent degummed steel wire to move towards the discharge port 12.

[0048] The limiting structure also prevents the push rod 32 from pushing the connecting rod 213 when the crushing tooth 21 normally penetrates the softer rubber layer. That is, when crushing ordinary rubber, the adjusting block 23 does not deflect significantly and no longer makes deep contact with the outer end of the limiting push block 33. The limiting spring 331 pushes the limiting push block 33 to move until the outer end of the limiting push block 33 extends into the adjusting groove 24, and the inner end of the limiting push block 33 engages with the limiting slot 322, locking the ejection of the push rod 32 and avoiding unnecessary power consumption.

[0049] Because different types and models of waste tires (such as passenger car tires, heavy-duty truck tires, and construction machinery tires) have different steel wire content and structural distribution, for example, all-steel radial tires have a very high proportion of thick steel wires that are tightly interwoven, while semi-steel tires have a relatively low proportion of steel wires. Considering that the process of moving the steel wires towards the discharge port 12 by the swinging of the crushing teeth 21 is relatively slow, when crushing waste tires with a very high internal steel wire content, such as all-steel tires, in order to prevent a large number of stripped steel wires from tangling and accumulating in the housing 1, affecting the crushing efficiency of subsequent rubber and accelerating the discharge speed of steel wires from the discharge port 12, the crushing roller 2 can be set at an angle. That is, the height of the crushing roller 2 decreases along the direction closer to the discharge port 12. In this embodiment, the angle of the crushing roller 2 tilting downward relative to the horizontal direction is preferably set between 5° and 10°. In order not to affect the driving stability of the crushing roller 2 in the tilted state, a frame 14 is provided on the lower side of the housing 1. The end face of the frame 14 used to support the housing 1 is tilted, so that the housing 1 installed on the frame 14 maintains a reasonable tilt.

[0050] To further ensure that the crushing teeth 21 scrape against all sides and corners of the steel wire, and to guarantee that the internal rubber is completely peeled off, a turning mechanism is provided on the upper side of each crushing roller 2. The turning mechanism includes a drive shaft 5, paddles 51, and a second drive assembly. There are at least two drive shafts 5, and the axial direction of the drive shafts 5 can be perpendicular to the axial direction of the crushing roller 2. Each drive shaft 5 is spirally equipped with several paddles 51, and the second drive assembly drives each drive shaft 5 to rotate synchronously. When the second drive assembly drives the drive shaft 5 to rotate, each paddle 51 contacts the accumulated tire blocks or steel wire bundles at intervals, creating an upward or flipping effect on the steel wire. This causes the irregular or coiled steel wire to continuously change position as it falls, ensuring that its different surfaces make full physical contact with the crushing teeth 21 below, which has a scraping action.

[0051] Drive assembly two has the same structure and operation as drive assembly one. Drive assembly two is located on the outside of housing 1 and includes drive source two 52, drive wheel two 53, and transmission belt two 54. Each drive shaft 5 is rotatably connected to housing 1, with one end of the drive shaft 5 extending outside housing 1. Each drive shaft 5 is connected to a drive wheel two 53 outside housing 1, and a transmission belt two 54 is fitted onto any two adjacent drive wheels two 53. The drive end of drive source two 52 is connected to any drive wheel two 53. Drive source two 52 can be a motor. When working, drive source two 52 drives the drive wheel two 53 connected to it to rotate, and drives the other drive wheels two 53 to rotate synchronously through transmission belt two 54, ultimately achieving the purpose of driving all drive shafts 5 to rotate synchronously.

[0052] The rubber shredder for waste tire recycling provided by this invention innovatively utilizes a biomimetic yielding mechanism when shredding waste tires containing steel wires. This effectively avoids the blades from forcibly crushing the hard steel wires, greatly extending the service life of the shredding equipment and reducing maintenance difficulty. Furthermore, during the separation and peeling of rubber, the eccentric pressure yielding trajectory is used to forcibly peel off the vulcanized rubber layer attached to the surface of the steel wires, similar to a "scraper," improving the thorough separation effect of steel wires and rubber. This results in highly pure recyclable steel wires while reducing the waste of rubber raw materials, significantly improving the economic benefits of comprehensive waste tire recycling.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A rubber shredder for recycling waste tires, comprising a housing (1), a rubber outlet (13) at the bottom of the housing (1), and a waste outlet (12) on the side of the housing (1), characterized in that, The housing (1) is equipped with a crushing mechanism, which includes: The crushing roller (2) is provided in the housing (1) with at least two crushing rollers (2). One end of the crushing roller (2) is opposite to the feed end of the housing (1), and the other end of the crushing roller (2) is opposite to the discharge port (12). The crushing roller (2) is connected to a drive assembly for driving it to rotate synchronously. Several adjustment grooves (24) are evenly opened on the periphery of the crushing roller (2). Each adjustment groove (24) is movably equipped with an adjustment assembly and a crushing tooth (21). With the side facing the axis of the crushing roller (2) as the inner side, the outer side of the adjustment groove (24) is a spherical groove, and the inner side of the adjustment groove (24) is an arc-shaped groove. The adjustment assembly includes an adjustment block (23) and an elastic element (22). The adjustment block (23) rotates in contact with the spherical groove of the adjustment groove (24). The crushing tooth (21) is eccentrically set relative to the adjustment block (23) and slides in cooperation with the adjustment block (23). The inner end of the crushing tooth (21) is connected to the elastic element (22). The elastic element (22) moves against the inner end face of the adjustment groove (24). When the crushing tooth (21) is squeezed into the adjustment groove (24), it swings in the direction towards the discharge port (12).

2. The rubber shredder for waste tire recycling according to claim 1, characterized in that, The elastic element (22) includes a spring and a connecting block. One end of the spring is connected to the breaking tooth (21), and the other end of the spring is connected to the connecting block. The inner side of the adjusting groove (24) is also provided with a guide groove (25). The inner end face of the connecting block is arc-shaped, and the connecting block slides with the inner end face of the adjusting groove (24) or the guide groove (25).

3. The rubber shredder for waste tire recycling according to claim 1, characterized in that, The adjusting block (23) is provided with a sliding groove, and the crushing tooth (21) slides in the sliding groove. The crushing tooth (21) includes a tooth (211) and a connecting part (212). The tooth (211) is located outside the connecting part (212). The tooth (211) slides in the connecting part (212). The crushing roller (2) is also provided with a power storage component for pushing the tooth (211) to slide relative to the connecting part (212).

4. The rubber shredder for waste tire recycling according to claim 3, characterized in that, A connecting rod (213) is fixed at the end opposite to the tooth (211) and the connecting part (212). The connecting rod (213) slides with the connecting part (212). The connecting rod (213) extends to the inside of the connecting part (212). The power storage component is used to push the connecting rod (213) to slide relative to the connecting part (212).

5. The rubber shredder for waste tire recycling according to claim 3, characterized in that, The power storage components include: Movable rod (3) is located inside the adjusting groove (24). The movable rod (3) slides with the crushing roller (2) in a direction parallel to the axial direction of the crushing roller (2). The movable rod (3) is provided with several connecting grooves (31) that are one-to-one with the adjusting groove (24) along its axial direction. Push rod (32), the inner end of push rod (32) is slidably engaged with connecting groove (31), the outer end of push rod (32) extends into adjusting groove (24) and is slidably engaged with adjusting groove (24) along its length direction, the part of push rod (32) in connecting groove (31) is fitted with a storage spring (321), when the movable rod (3) moves in the direction close to the outlet (12) it compresses the storage spring (321); The number of limiting structures is the same as the number of push rods (32). The limiting structures are used to restrict the push rods (32) from sliding relative to the adjustment grooves (24) during the charging process of the storage spring (321).

6. The rubber shredder for waste tire recycling according to claim 5, characterized in that, The limiting structure includes a limiting groove (332), a limiting spring (331), and a "U"-shaped limiting push block (33). The open end of the limiting push block (33) faces the connecting groove (31). The shape of the limiting groove (332) matches the shape of the limiting push block (33). The limiting push block (33) is installed in the limiting groove (332) by the limiting spring (331). The outer end of the limiting push block (33) extends to the inner side of the adjusting groove (24) and abuts against the adjusting block (23). The outer end of the push rod (32) is provided with a limiting slot (322). The inner end of the limiting push block (33) is movably inserted into the limiting slot (322).

7. The rubber shredder for waste tire recycling according to claim 5, characterized in that, One end of the movable rod (3) is elastically connected to the crushing roller (2), and the other end of the movable rod (3) is in contact with the inner wall of the box (1). A push block (15) is also provided on the inner wall of the box (1). The movable rod (3) and the push block (15) abut against each other at intervals. When the movable rod (3) and the push block (15) abut against each other, the movable rod (3) slides along its axial direction.

8. The rubber shredder for waste tire recycling according to claim 5, characterized in that, Each crushing tooth (21) is uniformly arranged along the circumference and axial direction of the crushing roller (2), and each movable rod (3) connected to the same crushing roller (2) is uniformly arranged circumferentially inside the crushing roller (2).

9. The rubber shredder for waste tire recycling according to claim 1, characterized in that, Each crushing roller (2) is also provided with a turning mechanism on the upper side. The turning mechanism includes a drive shaft (5), a paddle (51) and a second drive assembly. There are at least two drive shafts (5). Each drive shaft (5) is provided with a number of paddles (51) spirally. The second drive assembly drives each drive shaft (5) to rotate synchronously.

10. The rubber shredder for waste tire recycling according to claim 1, characterized in that, The height of each crushing roller (2) decreases in the direction toward the discharge port (12).

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