A flexible high-speed shredding and automatic impurity removal integrated device for polyester waste

Abstract

This invention discloses an integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste, belonging to the field of polyester waste treatment. It includes a first conveying unit, a magnetic separation and impurity removal section fixed on the first conveying unit, a second conveying unit, and a shredding unit located below the first conveying unit. The shredding unit includes two symmetrically arranged side frames. The second shredding blade can rotate on a first roller, and its rotational speed differs from that of the first shredding blade, thus creating a speed difference. This speed difference enables the shredding of waste material entering between two adjacent shredding blades, allowing for rapid tearing of the polyester waste and shortening the shredding cycle. It also achieves active shredding of waste material entering between two adjacent shredding blades, preventing waste material entanglement between adjacent blades and improving the device's shredding efficiency and effect.

Description

Technical Field

[0001] This invention relates to the field of polyester waste treatment, and more specifically, to an integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste. Background Technology

[0002] Polyester waste typically refers to various wastes generated during polyester production, processing, and consumption. Flexible high-speed shredding and automatic impurity removal of polyester waste are front-end processing technologies for the efficient recycling of polyester waste. Flexible high-speed shredding refers to tearing the fabric by pulling and shredding, while automatic impurity removal refers to separating and removing metal substances mixed in with polyester waste through magnetic separation or gravity separation.

[0003] In the polyester (PET) waste recycling industry, unlike the shredding of ordinary rigid plastics, polyester filaments possess extremely high tensile strength and toughness. Existing twin-shaft shredders face two major challenges when processing this type of material: First, there is the phenomenon of "soft entanglement": if the high-toughness fiber is not cut instantly, it is very easy to slip along the surface of the roller, and then tighten the cutter shaft layer by layer like a "trailbladder", causing the motor to overload and stop. Secondly, there is the issue of "thermal agglomeration": Polyester has a melting point of approximately 260°C. During high-friction shredding, the local temperature rises extremely rapidly in the cutting tool, and the entangled waste material easily softens and adheres to form hard lumps, causing the gap between the cutting tools to be completely filled. Existing rigid scrapers are ill-suited to this type of entangled material that combines rigidity and flexibility. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide an integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A flexible high-speed shredding and automatic impurity removal integrated device for polyester waste includes a first conveying unit, a magnetic separation and impurity removal section fixed on the first conveying unit, a second conveying unit, and a shredding unit located below the first conveying unit. The shredding unit includes two symmetrically arranged side frames, two side seats symmetrically arranged between the two side frames and fixed at both ends to the two side frames respectively, and a shredding assembly connected between the two side frames and located between the two side seats; The shredding assembly includes two symmetrically arranged first rollers, a plurality of shredding blades I fixed at equal intervals on the outer surfaces of the two first rollers, a plurality of annular grooves opened at equal intervals on the outer surfaces of the first rollers, a plurality of shredding blades II rotatably connected in the plurality of annular grooves, and a differential drive assembly connected to the interior of the two first rollers respectively for driving the plurality of shredding blades II to rotate. The annular groove is formed between two adjacent shredding blades.

[0007] Furthermore, one end of each of the two first rollers is rotatably connected to one side of one of the side frames, and one end of each of the two first rollers is connected by gear meshing. The other end of each of the two first rollers is rotatably connected to another side frame and passes through the side frame. A first motor drive unit is fixedly connected to one side of one of the side frames, and the first motor drive unit is used to drive the two first rollers to rotate in opposite directions.

[0008] Furthermore, the first roller body has a movable groove 2 inside, and multiple movable grooves 1 connected to the movable groove 2 and the annular groove. A first gear is rotatably connected in the multiple movable grooves 1. A first toothed disc that meshes with the first gear is fixed to the inner ring wall of the shredding blade 2, and the first toothed disc is rotatably connected in the annular groove.

[0009] Furthermore, the differential drive assembly includes a second roller body rotatably connected in the second movable groove, a second gear disk equidistantly fixed to the outside of the second roller body and meshing with the first gear, a second gear rotatably connected inside one of the side frames, and a third gear meshing with the second gear. The second gear is fixed to the outside of the second roller body, and a second motor drive unit with an output shaft connected to the third gear is fixed to one side of one of the side frames.

[0010] Furthermore, both side seats are internally connected to a shaft-mounted processing assembly, which includes a rotating shaft rotatably connected inside the side seat, multiple shredding blades fixed at equal intervals to the outside of the rotating shaft, blade teeth integrally formed on the outside of the shredding blades, and multiple extended baffles fixed to one side of the side seat. A third motor drive unit is fixed to one side of both side seats, and the output shaft of the third motor drive unit is connected to the rotating shaft through a transmission assembly.

[0011] Furthermore, both the third shredding blade and the extended baffle are located between two adjacent first shredding blades.

[0012] Furthermore, two cutting saw assemblies are connected to one side of each of the two side seats, and the cutting saw assembly includes a frame that slides on one side of the side seat, a plurality of first cutters and a plurality of second cutters that are fixed to both sides of the frame, and a reciprocating drive unit connected to one side of the side seat for driving the frame to reciprocate. The first cutter is located between two adjacent shredding blades three, and the second cutter is located between two adjacent shredding blades one.

[0013] Furthermore, the reciprocating drive unit includes a cam rotatably connected to one side of the side seat, a slider slidably connected to one side of the side seat and fixedly connected to the frame, and a connecting rod with one end rotatably connected to the cam and the other end rotatably connected to the slider. A fourth motor drive unit is fixedly connected to one side of the side seat, and the fourth motor drive unit is connected to the cam through a transmission assembly.

[0014] Furthermore, the first roller body has multiple internal flow channels and an annular cavity that connects the multiple internal flow channels with the movable groove. The outlets of the multiple internal flow channels are located at one end of the first roller body through the side frame.

[0015] Furthermore, one end of each of the two second rollers is rotatably connected to and passes through one of the side frames, and two rotary joints are fixedly connected to one side of the side frame. A hollow cavity is opened inside one end of each of the two second rollers, and the inner tubes of the two rotary joints are respectively fixedly inserted into the hollow cavities at one end of the two second rollers. An exhaust port connected to the hollow cavity is opened on the outside of each of the two rotary joints.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This scheme is provided with a second shredding blade on the first roller body, and the second shredding blade can rotate on the first roller body. The rotation speed of the second shredding blade is different from that of the first shredding blade, thus forming a speed difference. By adjusting the rotation speed, the relative cutting speed between the second shredding blade and the first shredding blade can be changed, thereby adapting to polyester waste with different toughness. The shredding treatment of waste entering between two adjacent first shredding blades is realized by the speed difference. Thus, the polyester waste can be quickly torn apart, which is beneficial to shorten the shredding cycle. At the same time, the active shredding treatment of waste entering between two adjacent first shredding blades is realized, avoiding the situation of waste entanglement between two adjacent first shredding blades, and improving the shredding efficiency and shredding effect of the device.

[0017] (2) This solution is equipped with a shaft-mounted processing component. Multiple shredding blades are set up. The shredding blades are located between two adjacent shredding blades and the rotation direction of the shredding blades is opposite to that of the multiple shredding blades. When the shredding blades move relative to the shredding blades, the waste entering the gap will be subjected to the resultant force from three directions and different speeds in an instant. The material that may have been folded or stuck will be forcibly torn and shredded. At the same time, when the fibers try to wrap around the shredding blades, they will be continuously broken from the tangential direction by the shredding blades rotating in the opposite direction, so as to avoid the situation of waste entanglement and clogging on the shredding blades.

[0018] (3) In view of the high toughness and easy entanglement of polyester waste, this solution establishes an unsteady shearing field through the cutting saw assembly. Conventional fixed scrapers are prone to forming dead angles, resulting in fiber accumulation. However, the reciprocating motion of the first and second cutters in this application not only plays a physical cutting role, but more importantly, it introduces a transverse shearing force. This transverse force is orthogonal to the tangential force of the roller rotation, making it impossible for the fiber to establish a stable entanglement tension at the root of the blade, thereby solving the problem of flexible waste sticking to the shaft and freezing.

[0019] (4) This scheme is equipped with a rotary joint and an inner flow channel. The cooling airflow can enter the second roller body from the rotary joint and exit from the exhaust port into the annular cavity, enter the inner flow channel from the annular cavity, and finally exit from the opening of the inner flow channel on one side of the first roller body. When the cooling gas passes through the inner flow channel, it can absorb the heat generated by bearing friction and blade shearing, reduce the surface temperature of shredding blade one, first toothed disc and shredding blade two, prevent the material from thermally melting and agglomerating, and reduce the thermal degradation and oxidation reaction of waste during the shredding process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the shredding unit structure of the present invention; Figure 3 This is a schematic diagram of the internal flow channel outlet structure of the present invention; Figure 4 This is a schematic diagram of the shredding component structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the differential drive component structure of the present invention; Figure 7 This is a schematic diagram of the third gear structure of the present invention; Figure 8 This is a schematic diagram of the movable groove 2, the annular cavity, and the inlet structure of the inner flow channel of the present invention; Figure 9 This is a schematic diagram of the structure of the axial processing assembly and the cutting saw assembly of the present invention; Figure 10 This is a schematic diagram of the reciprocating drive unit structure of the present invention. Figure 1 ; Figure 11 This is a schematic diagram of the reciprocating drive unit structure of the present invention. Figure 2 ; Figure 12 This is a cross-sectional view of the side seat and shredding assembly of the present invention.

[0021] Explanation of the labels in the diagram: 1. First conveying unit; 2. Magnetic separation and impurity removal unit; 3. Second conveying unit; 4. Shredding unit; 41. Side frame; 42. Side seat; 43. Shredding assembly; 431. First roller; 432. Shredding blade one; 433. Annular groove; 434. Movable groove one; 435. First gear; 436. First gear disc; 437. Shredding blade two; 438. Movable groove two; 439. Annular cavity; 44. First motor drive unit; 45. Second motor drive unit; 46. Differential drive assembly; 461. Second roller body; 462, second gear; 463, second gear disc; 464, third gear; 465, exhaust port; 5, rotary joint; 6, inner flow channel; 7, shaft processing assembly; 71, third motor drive unit; 72, rotating shaft; 73, shredding blade three; 74, blade teeth; 75, extended stop unit; 8, cutting saw assembly; 81, frame; 82, first cutter; 83, second cutter; 9, reciprocating drive unit; 91, fourth motor drive unit; 92, cam; 93, connecting rod; 94, slider. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 12 A flexible high-speed shredding and automatic impurity removal integrated device for polyester waste includes a first conveying unit 1, a magnetic separation and impurity removal section 2 fixed on the first conveying unit 1, a second conveying unit 3, and a shredding unit 4 located below the first conveying unit 1; the first conveying unit 1 and the second conveying unit 3 are both conveying units composed of conveying rollers and conveyor belts; the magnetic separation and impurity removal section 2 is a magnetic separation conveying assembly composed of a conveying roller, a magnetic roller, and a conveyor belt sleeved outside the magnetic roller and the conveying roller; The shredding unit 4 includes two symmetrically arranged side frames 41, two side seats 42 symmetrically arranged between the two side frames 41 and fixed at both ends to the two side frames 41 respectively, and a shredding assembly 43 connected between the two side frames 41 and located between the two side seats 42. The shredding assembly 43 includes two symmetrically arranged first rollers 431, a plurality of shredding blades 432 fixed at equal intervals on the outer surfaces of the two first rollers 431, a plurality of annular grooves 433 equally spaced on the outer surfaces of the first rollers 431, a plurality of shredding blades 437 rotatably connected in the plurality of annular grooves 433, and a differential drive assembly 46 connected inside the two first rollers 431 to drive the plurality of shredding blades 437 to rotate. The annular groove 433 is formed between two adjacent shredding blades 432.

[0024] One end of each of the two first rollers 431 is rotatably connected to one side of one of the side frames 41, and the two first rollers 431 are connected by gear meshing. The other ends of the two first rollers 431 are rotatably connected to another side frame 41 and pass through the side frame 41. A first motor drive unit 44 is fixedly connected to one side of one of the side frames 41, and the first motor drive unit 44 is used to drive the two first rollers 431 to rotate in opposite directions.

[0025] The first roller body 431 has a movable groove 438 inside and multiple movable grooves 434 connected to the movable groove 438 and the annular groove 433. A first gear 435 is rotatably connected in the multiple movable grooves 434. The inner ring wall of the shredding blade 437 is fixedly connected to a first toothed disc 436 that meshes with the first gear 435, and the first toothed disc 436 is rotatably connected in the annular groove 433.

[0026] The differential drive assembly 46 includes a second roller 461 rotatably connected in the movable groove 438, a second gear 463 equidistantly fixed to the outside of the second roller 461 and meshing with a first gear 435, a second gear 462 rotatably connected inside one of the side frames 41, and a third gear 464 meshing with the second gear 462. The second gear 462 is fixed to the outside of the second roller 461, and a second motor drive unit 45 with an output shaft connected to the third gear 464 is fixed to one side of one of the side frames 41.

[0027] By adopting the above technical solution, the waste is placed on the first conveying unit 1, and the waste is conveyed by the first conveying unit 1. When the waste passes below the magnetic separation and impurity removal section 2 on the first conveying unit 1, one of the magnetic rollers in the magnetic separation and impurity removal section 2 attracts the metal impurities in the waste by magnetic attraction, and the waste is conveyed by the magnetic separation and impurity removal section 2 towards the second conveying unit 3. The second conveying unit 3 can transport away the metal impurities discharged from the magnetic separation and impurity removal section 2; thereby completing the separation and impurity removal of metal substances mixed in the polyester waste; driven by the first motor... 44 can drive one of the first rollers 431 to rotate. Since one end of the two first rollers 431 is connected by meshing (through gear meshing), when one of the first rollers 431 rotates, it can drive the other first roller 431 to rotate synchronously, and the two first rollers 431 can rotate towards each other. When the polyester waste falls from the second conveying unit 3 and enters the shredding assembly 43, the shredding blades 432 on the two first rollers 431 can rotate with the two first rollers 431, thereby shredding the polyester waste. The two second motor drive units 45 can drive the two third gears 464 to rotate respectively. The rotation of the two third gears 464 drives the two second gears 462 to rotate respectively. The rotation of the two second gears 462 can drive the two second rollers 461 to rotate. The two second rollers 461 rotate in the two movable grooves 438. The second toothed disks 463 outside the two second rollers 461 also rotate accordingly. Since two second rollers 461 are respectively installed in the two movable grooves 438 inside the two first rollers 431, when the first roller 431 rotates and the second roller 461 does not rotate, the first roller 431 will drive the first gear 435 in the movable groove 434 to rotate. During the rotation, the first gear 435 will mesh with the second gear disk 463 outside the second roller 461, so that the first gear 435 will rotate in the movable groove 434 as the first roller 431 rotates. When the first gear 435 rotates, it can drive the second gear disk 463 and the shredding blade 437 to rotate. At this time, the shredding blade 437 rotates in the same direction as the first roller 431, and the rotation speed of the shredding blade 437 is higher than that of the first roller 431. When the second roller 461 rotates in the second movable groove 438, and the rotation direction of the second roller 461 is opposite to the rotation direction of the first roller 431, the rotation direction of the second shredding blade 437 is still the same as the rotation direction of the first roller 431, but the rotation speed of the second shredding blade 437 will become faster. It should be noted that the second gear 462 and the first roller 431 are rotationally isolated via a bearing (not shown in the figure). When the first roller 431 rotates at high speed, although the second roller 461 is located inside it, the second gear 462 is independently driven by the external third gear 464, causing the second roller 461 to rotate relative to the first roller 431 (i.e., differential motion). This structure is similar to the motion logic of a planetary gear system, ensuring that while the first roller 431 revolves, the internal shredding blade 437 can obtain independent rotational power, and the two do not interfere with each other. By switching between the two working states, the rotation speed of the second shredder 437 can be adjusted. When the rotation speed of the second shredder 437 is different from that of the first shredder 432, a speed difference is formed. The rotation speed of the second shredder 437 is determined by the rotation speed of the first roller 431 and the input speed of the second motor drive unit 45. By adjusting the rotation speed, the relative cutting speed between the second shredder 437 and the first shredder 432 can be changed, thus adapting to polyester waste with different toughness. The speed difference enables the shredding of waste entering between two adjacent shredders 432. This allows for rapid tearing of polyester waste, which helps to shorten the shredding cycle. It also enables active shredding of waste entering between two adjacent shredders 432, avoiding the entanglement of waste between the two adjacent shredders 432, and improving the shredding efficiency and shredding effect of the device.

[0028] like Figure 9 and Figure 12 As shown, both side seats 42 are internally connected to a shaft-mounted processing assembly 7. The shaft-mounted processing assembly 7 includes a rotating shaft 72 rotatably connected inside the side seat 42, a plurality of shredding blades 73 equidistantly fixed to the outside of the rotating shaft 72, blade teeth 74 integrally formed on the outside of the shredding blades 73, and a plurality of extended baffles 75 fixed to one side of the side seat 42. A third motor drive unit 71 is fixed to one side of both side seats 42, and the output shaft of the third motor drive unit 71 is connected to the rotating shaft 72 through a transmission assembly.

[0029] The shredding blade 73 and the extended baffle 75 are both located between two adjacent shredding blades 432.

[0030] By adopting the above technical solution, the third motor drive unit 71 can drive the rotating shaft 72 to rotate through the transmission component (gear transmission or sprocket transmission, which are mature existing technologies and will not be described in detail here). The rotation of the rotating shaft 72 can drive multiple shredding blades 73 to rotate. The rotation direction of the shredding blades 73 is opposite to the rotation direction of the multiple shredding blades 437. When the shredding blades 73 and 437 move relative to each other, the waste material entering the gap will be subjected to the resultant force from three directions and different speeds (the force generated by the rotation of the shredding blades 432, 437, and 73). Material that may have been folded or stuck will be forcibly torn and shredded. At the same time, when the fibers try to wrap around the shredding blades 437, they will be continuously broken from the tangential direction by the shredding blades 73 rotating in the opposite direction, so as to avoid the situation of waste material entanglement on the shredding blades 437.

[0031] like Figures 9 to 11As shown, two cutting saw assemblies 8 are respectively connected to one side of the two side seats 42, and the cutting saw assembly 8 includes a frame 81 slidably connected to one side of the side seat 42, a plurality of first cutters 82 and a plurality of second cutters 83 respectively fixed to both sides of the frame 81, and a reciprocating drive part 9 connected to one side of the side seat 42 for driving the frame 81 to reciprocate. The first cutter 82 is located between two adjacent shredding blades 73, and the second cutter 83 is located between two adjacent shredding blades 432.

[0032] The reciprocating drive unit 9 includes a cam 92 rotatably connected to one side of the side seat 42, a slider 94 slidably connected to one side of the side seat 42 and fixedly connected to the frame 81, and a connecting rod 93 with one end rotatably connected to the cam 92 and the other end rotatably connected to the slider 94. A fourth motor drive unit 91 is fixedly connected to one side of the side seat 42, and the fourth motor drive unit 91 is connected to the cam 92 through a transmission assembly.

[0033] By adopting the above technical solution, the fourth motor drive unit 91 drives the cam 92 to rotate through a transmission component (gear transmission or sprocket transmission, which are mature existing technologies and will not be elaborated here). The rotation of the cam 92 can drive the slider 94 to reciprocate on one side of the side seat 42 through the connecting rod 93. The reciprocating motion of the slider 94 can drive the frame 81 and the multiple first cutters 82 and multiple second cutters 83 on the frame 81 to reciprocate. The multiple first cutters 82 reciprocate between two adjacent shredding blades 73, and the multiple second cutters 83 reciprocate between two adjacent shredding blades 432. This causes the first cutters 82 and the second cutters 83 to continuously change positions within the shredding gap, forcibly peeling off the fiber layer that is trying to stick to the surface of the blade, destroying the static friction balance formed by the entanglement of waste materials, and realizing the shredding of polyester long fibers. The secondary cutting; even if the fibers attempt to wrap around the shredding blades, the reciprocating cutter will continuously saw or peel off these accumulations, thereby breaking the static balance formed by the entanglement; at the same time, the cutter also forms a dynamic barrier structure, and the polyester torn into strips rather than blocks by the rotating blades will be cut a second time in this area by the reciprocating cutter head; in view of the high toughness and easy entanglement characteristics of polyester waste, this solution establishes an unsteady shearing field through the cutting saw assembly; conventional fixed scrapers are prone to forming dead angles that lead to fiber accumulation, while the reciprocating motion of the first cutter 82 and the second cutter 83 in this application not only plays a physical cutting role, but more importantly, introduces a transverse shearing force. This transverse force is orthogonal to the tangential force of the roller rotation, so that the fibers cannot establish a stable winding tension at the root of the blades, thereby solving the problem of flexible waste sticking to the shaft and freezing.

[0034] like Figure 3 , Figure 6 , Figure 8As shown, the first roller body 431 has multiple inner flow channels 6 and an annular cavity 439 that connects the multiple inner flow channels 6 to the movable groove 438. The outlets of the multiple inner flow channels 6 are opened at one end of the first roller body 431 through the side frame 41.

[0035] One end of each of the two second roller bodies 461 is rotatably connected to one of the side frames 41 and passes through the side frame 41. Two rotary joints 5 are fixedly connected to one side of the side frame 41. A hollow cavity is opened inside one end of each of the two second roller bodies 461. The inner tubes of the two rotary joints 5 are respectively fixedly inserted into the hollow cavities at one end of the two second roller bodies 461. An exhaust port 465 communicating with the hollow cavity is opened on the outside of each of the two rotary joints 5.

[0036] By adopting the above technical solution, the external pipe of the rotary joint 5 allows the cooling airflow to enter the hollow cavity inside the second roller 461 from the rotary joint 5, and exit from the exhaust port 465 into the annular cavity 439. From the annular cavity 439, the airflow enters the inner flow channel 6. The gas moves in the inner flow channel 6 and exits from the opening of the inner flow channel 6 on one side of the first roller 431. When the cooling gas passes through the inner flow channel 6, it can absorb the heat generated by bearing friction and blade shearing, reduce the surface temperature of the first shredding blade 432, the first toothed disc 436, and the second shredding blade 437, prevent the material from thermally melting and agglomerating, and reduce the thermal degradation and oxidation reaction of the waste during the shredding process. In addition, since high-pressure gas is continuously introduced into the inner flow channel 6 and the annular cavity 439, a positive pressure zone is formed in the internal cavity of the first roller 431 relative to the external environment. When this positive pressure airflow overflows from the gaps in the components (such as the gap between the blade and the groove), it can form an air curtain, effectively preventing fine polyester dust and impurities from entering the gear transmission system, thereby significantly extending the service life of precision transmission components.

[0037] Usage: Waste material is placed on the first conveying unit 1 and conveyed through the first conveying unit 1. When the waste material passes below the magnetic separation and impurity removal section 2 on the first conveying unit 1, one of the magnetic rollers in the magnetic separation and impurity removal section 2 magnetically attracts the metal impurities in the waste material and conveys them towards the second conveying unit 3. The second conveying unit 3 can then remove the metal impurities discharged from the magnetic separation and impurity removal section 2. When the polyester waste material falls from the second conveying unit 3 and enters the shredding assembly 43, both... The shredding blade 432 on the first roller 431 rotates with the two first rollers 431, thereby shredding the polyester waste. Two second motor drive units 45 drive the two second rollers 461 to rotate in the two movable grooves 438 respectively. The second gear disk 463 outside the two second rollers 461 also rotates accordingly. The rotation of the second gear disk 463 drives the first gear 435 to rotate in the movable groove 434. The rotation of the first gear 435 drives the first gear disk 436 and the shredding blade 437 to rotate. The first motor drives the cam 92 to shred polyester waste material entering between two adjacent shredding blades 432. The third motor drive unit 71 drives the rotating shaft 72 to rotate via the transmission assembly. The rotating shaft 72 drives multiple shredding blades 73 to rotate. When the shredding blades 73 and 437 move relative to each other, the waste material entering the gap is instantly subjected to the resultant force from three directions at different speeds, preventing waste material from becoming entangled and clumped on the shredding blades 437. The fourth motor drive unit 91 drives the cam 92 via the transmission assembly. The rotation of cam 92 can drive slider 94 to reciprocate on one side of side seat 42 via connecting rod 93. The reciprocating motion of slider 94 can drive frame 81 and multiple first cutters 82 and multiple second cutters 83 on frame 81 to reciprocate. Multiple first cutters 82 reciprocate between two adjacent shredding blades 73, and multiple second cutters 83 reciprocate between two adjacent shredding blades 432. Even if fibers attempt to wrap around the shredding blades, the reciprocating cutters will continuously saw or peel off these accumulations.

[0038] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A flexible high-speed shredding and automatic impurity removal integrated device for polyester waste, comprising a first conveying unit (1), a magnetic separation and impurity removal section (2) fixed on the first conveying unit (1), a second conveying unit (3), and a shredding unit (4) located below the first conveying unit (1), characterized in that: The shredding unit (4) includes two symmetrically arranged side frames (41), two side seats (42) symmetrically arranged between the two side frames (41) and fixed at both ends to the two side frames (41) respectively, and a shredding assembly (43) connected between the two side frames (41) and located between the two side seats (42). The shredding assembly (43) includes two symmetrically arranged first rollers (431), a plurality of shredding blades (432) fixed at equal intervals on the outer surfaces of the two first rollers (431), a plurality of annular grooves (433) equally spaced on the outer surfaces of the first rollers (431), a plurality of shredding blades (437) rotatably connected in the plurality of annular grooves (433), and a differential drive assembly (46) connected to the interior of the two first rollers (431) for driving the plurality of shredding blades (437) to rotate. The annular groove (433) is formed between two adjacent shredding blades (432).

2. The integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste according to claim 1, characterized in that: One end of each of the two first rollers (431) is rotatably connected to one side of one of the side frames (41), and one end of each of the two first rollers (431) is connected by gear meshing. The other end of each of the two first rollers (431) is rotatably connected to another side frame (41) and passes through the side frame (41). One side of one of the side frames (41) is fixedly connected to a first motor drive unit (44), and the first motor drive unit (44) is used to drive the two first rollers (431) to rotate in opposite directions.

3. The integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste according to claim 2, characterized in that: The first roller body (431) has a movable groove two (438) inside, and a plurality of movable grooves one (434) connected to the movable groove two (438) and the annular groove (433). A first gear (435) is rotatably connected in the plurality of movable grooves one (434). A first toothed disc (436) that meshes with the first gear (435) is fixed to the inner ring wall of the shredding blade two (437), and the first toothed disc (436) is rotatably connected in the annular groove (433).

4. The integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste according to claim 3, characterized in that: The differential drive assembly (46) includes a second roller (461) rotatably connected in the second movable slot (438), a second gear (463) equidistantly fixed to the outside of the second roller (461) and meshing with a first gear (435), a second gear (462) rotatably connected inside one of the side frames (41), and a third gear (464) meshing with the second gear (462). The second gear (462) is fixed to the outside of the second roller (461), and a second motor drive unit (45) with an output shaft connected to the third gear (464) is fixed to one side of one of the side frames (41).

5. The integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste according to claim 1, characterized in that: Both side seats (42) are internally connected to a shaft-mounted processing assembly (7), and the shaft-mounted processing assembly (7) includes a rotating shaft (72) rotatably connected inside the side seat (42), a plurality of shredding blades (73) equidistantly fixed to the outside of the rotating shaft (72), blade teeth (74) integrally formed on the outside of the shredding blades (73), and a plurality of extended baffles (75) fixed to one side of the side seat (42). A third motor drive unit (71) is fixed to one side of both side seats (42), and the output shaft of the third motor drive unit (71) is connected to the rotating shaft (72) through a transmission assembly.

6. The integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste according to claim 5, characterized in that: The shredding blade three (73) and the extended baffle (75) are both located between two adjacent shredding blades one (432).

7. The integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste according to claim 1, characterized in that: Two cutting saw assemblies (8) are connected to one side of each of the two side seats (42), and the cutting saw assembly (8) includes a frame (81) slidably connected to one side of the side seat (42), a plurality of first cutters (82) and a plurality of second cutters (83) respectively fixed to both sides of the frame (81), and a reciprocating drive unit (9) connected to one side of the side seat (42) for driving the frame (81) to reciprocate. The first cutter (82) is located between two adjacent shredding blades three (73), and the second cutter (83) is located between two adjacent shredding blades one (432).

8. The integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste according to claim 7, characterized in that: The reciprocating drive unit (9) includes a cam (92) rotatably connected to one side of the side seat (42), a slider (94) slidably connected to one side of the side seat (42) and fixedly connected to the frame (81), and a connecting rod (93) with one end rotatably connected to the cam (92) and the other end rotatably connected to the slider (94). A fourth motor drive unit (91) is fixedly connected to one side of the side seat (42), and the fourth motor drive unit (91) is connected to the cam (92) through a transmission assembly.

9. The integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste according to claim 4, characterized in that: The first roller body (431) has multiple internal flow channels (6) and an annular cavity (439) that connects the multiple internal flow channels (6) to the movable groove (438). The outlets of the multiple internal flow channels (6) are opened at one end of the first roller body (431) through the side frame (41).

10. The integrated device for flexible high-speed shredding and automatic impurity removal of polyester waste according to claim 9, characterized in that: One end of each of the two second roller bodies (461) is rotatably connected to one of the side frames (41) and passes through the side frame (41). Two rotary joints (5) are fixedly connected to one side of the side frame (41). A hollow cavity is opened inside one end of each of the two second roller bodies (461). The inner tubes of the two rotary joints (5) are respectively fixedly inserted into the hollow cavities at one end of the two second roller bodies (461). An exhaust port (465) communicating with the hollow cavity is opened on the outside of each of the two rotary joints (5).

Images