Crushing equipment for recycling PET (Polyethylene Terephthalate) leftover materials

Abstract

The invention relates to the technical field of recycling and smashing, and discloses smashing equipment for recycling PET leftover materials, which comprises a reverse rotation type smashing mechanism and a waste material conveying mechanism, the feeding shell is installed on one side of the first rotating disc and can feed waste materials, the installation pipe sleeve is arranged at the bottom of the feeding shell and can guide the waste materials, and the screw rod is installed in the installation pipe sleeve and can make the waste materials enter the waste material output hole. According to the smashing equipment for recycling the PET leftover materials, the smashing fins rotating in the reverse direction are used for smashing the PET waste materials, so that the PET waste materials are smashed in the opposite direction, the smashing efficiency is improved, in addition, one driving motor is used, feeding and conveying of the waste materials can be achieved, smashing of the waste materials can also be achieved, and the smashing efficiency is improved. Therefore, the use cost of equipment is reduced.

Description

Technical Field

[0001] This invention relates to the field of recycling and crushing technology, specifically to a crushing device for recycling PET scrap. Background Technology

[0002] PET (polyethylene terephthalate) is considered the most widely used resin in the world, used to manufacture PET bottles, clothing, food trays, industrial films and magnetic tapes, etc. PET scrap is a type of PET waste generated during the manufacturing process, which has gradually gained attention in recent years with the promotion of the circular economy concept and the advancement of resource recycling technology.

[0003] For example, Chinese patent CN208410395U discloses a multi-stage plastic crushing device for waste recycling. Its main structure includes a crushing barrel, a crushing motor, a rotating shaft, crushing blades, a fixed groove, a connecting spring, and a screen plate. This device allows plastic to be initially crushed by the first crushing tooth and the second crushing tooth in the feeding bin. The initially crushed plastic enters the crushing barrel, and the crushing motor drives the rotating shaft and the crushing blades to rotate and crush the plastic, thus performing multi-stage and thorough crushing of the plastic.

[0004] However, the aforementioned multi-stage plastic crushing equipment for waste recycling requires multiple sets of drive motors as power sources, which undoubtedly increases the cost of equipment use. Furthermore, during the contact between the crushing teeth and the waste material, the crushing is subjected to unidirectional tooth crushing, resulting in low crushing efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a crushing device for recycling PET scrap. It utilizes counter-rotating crushing blades to crush PET waste, thereby improving crushing efficiency through relative directional crushing. Furthermore, the device employs a single drive motor, enabling both waste feeding and crushing, thus reducing equipment operating costs and solving the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a crushing device for recycling PET scrap, comprising a longitudinal mounting plate that can be installed on a vertical plane, a first horizontal base plate and a second horizontal base plate fixedly installed on both sides of one end of the longitudinal mounting plate, and a drive motor fixedly installed on one side of the longitudinal mounting plate; further comprising a reverse rotation crushing mechanism, the structure of which includes a first and a second turntable that can rotate in the opposite direction, a first and a second crushing wing installed on the rotating ends of the first and second turntables and capable of rotary crushing the waste, and a waste output hole capable of conveying waste between the first and second turntables; and a waste conveying mechanism, the structure of which includes a feeding shell installed on one side of the first turntable and capable of feeding waste, an installation sleeve disposed at the bottom of the feeding shell and capable of guiding the waste flow, and a screw installed in the installation sleeve and capable of allowing the waste to enter the waste output hole.

[0007] Preferably, the reverse rotation crushing mechanism further includes a first rotating shaft integrally disposed at one end of the first rotating disk and a second rotating shaft integrally disposed at one end of the second rotating disk. One end of the second rotating shaft is mounted inside the first horizontal base plate via a bearing. A second pulley is fixedly fitted on the middle shaft of the second rotating shaft, and a first pulley is fixedly fitted on the middle shaft of the first rotating shaft. A first crushing fin and a second crushing fin are fixedly installed on opposite ends of the first and second rotating disks, respectively. A waste output hole with open ends is provided at the center of the first rotating shaft.

[0008] Preferably, the first and second crushing wings are arranged in a staggered manner.

[0009] Preferably, the center lines of the first turntable, the second turntable, the first shaft, and the second shaft are on the same horizontal line.

[0010] Preferably, the waste conveying mechanism further includes a feeding chamber disposed inside the feeding shell and having an open top. The bottom of the feeding shell is provided with an integrally formed mounting sleeve. The interior of the mounting sleeve is provided with a waste collection chamber communicating with the bottom of the feeding chamber and having open ends. One open end of the mounting sleeve is mounted to the open end of a first rotating shaft via a bearing and a sealing ring. The other open end of the mounting sleeve is mounted with a sealing cover via a bearing and a sealing ring. A first shaft hole is provided at the center of the sealing cover. A third rotating shaft is mounted inside the first shaft hole via a bearing. A screw is fixedly mounted at one end of the third rotating shaft located inside the waste collection chamber, and the screw extends into the waste output hole. A third pulley is fixedly fitted at the other end of the third rotating shaft. One side of the mounting sleeve is fixedly connected to one end of the second horizontal base plate.

[0011] Preferably, during operation, the rotation of the screw causes the waste material located around it to tend to move toward the inside of the waste output hole.

[0012] Preferably, it also includes a coaxial rotating driven mechanism, the structure of which includes a first bevel gear that can drive the first turntable to rotate, a second bevel gear that can drive the second turntable and the screw to rotate, and a third bevel gear that can rotate with the rotor of the drive motor and drive the first bevel gear and the second bevel gear to rotate.

[0013] Preferably, the coaxial rotary driven mechanism further includes a fourth rotating shaft integrally disposed at one end of the first bevel gear and a fifth rotating shaft integrally disposed at one end of the second bevel gear. One end of the fifth rotating shaft is mounted inside the first horizontal base plate via a bearing, and the shaft body of the fourth rotating shaft is mounted inside the second horizontal base plate via a bearing. The tooth structure of the third bevel gear meshes with the tooth structures of the first bevel gear and the second bevel gear, respectively. The third bevel gear... The shaft is connected to the rotor of the drive motor via a coupling. A No. 4 pulley is fitted around the shaft body in the middle of the No. 4 shaft. A No. 5 pulley is fitted around the shaft body in the middle of the No. 5 shaft. A No. 2 shaft hole with open ends is provided at the center of the No. 1 bevel gear and the No. 4 shaft. A No. 6 shaft that passes through the No. 2 shaft hole is fixedly installed at the other end of the No. 2 bevel gear. The shaft body of the No. 6 shaft is installed inside the No. 2 shaft hole through a bearing. A No. 6 pulley is fixedly fitted at one end of the No. 6 shaft.

[0014] Preferably, the meshing positions of the first and third bevel gears are symmetrically arranged with respect to the meshing positions of the second and third bevel gears.

[0015] Preferably, the fourth pulley and the first pulley are linked by a synchronous belt, the fifth pulley and the second pulley are linked by a synchronous belt, and the sixth pulley and the third pulley are linked by a synchronous belt.

[0016] Compared with the prior art, the present invention provides a crushing device for recycling PET scrap, which has the following advantages: The device utilizes counter-rotating crushing blades to crush PET waste, thereby improving crushing efficiency by crushing the PET waste in opposite directions. In addition, the device uses a drive motor to both supply and transport waste and crush it, thus reducing the operating cost of the equipment. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the present invention; Figure 3 This is a perspective view of the reverse rotation crushing mechanism in this invention; Figure 4 This is a three-dimensional cross-sectional view of the reverse rotation crushing mechanism in this invention; Figure 5 This is a perspective view of the waste conveying mechanism in this invention; Figure 6 This is a three-dimensional cross-sectional view of the waste conveying mechanism in this invention; Figure 7 This is a perspective view of the coaxial rotary driven mechanism of the present invention; Figure 8 This is a three-dimensional cross-sectional view of the coaxial rotary driven mechanism of the present invention.

[0018] The components include: 1. Longitudinal mounting plate; 2. Horizontal base plate No. 1; 3. Horizontal base plate No. 2; 4. Drive motor; 5. Synchronous belt; 6. Reverse rotation crushing mechanism; 61. Turntable No. 1; 62. Turntable No. 2; 63. Crushing fin No. 1; 64. Crushing fin No. 2; 65. Rotating shaft No. 1; 66. Rotating shaft No. 2; 67. Pulley No. 1; 68. Pulley No. 2; 69. Waste output hole; 7. Waste conveying mechanism; 71. Feeding shell; 72. Mounting sleeve; 73. Feeding... 74. Material chamber; 75. Waste collection chamber; 76. Encapsulation cover; 77. Shaft hole No. 1; 78. Shaft No. 3; 79. Screw; 80. Pulley No. 3; 81. Coaxial rotating driven mechanism; 82. Bevel gear No. 1; 83. Bevel gear No. 2; 84. Coupling; 85. Shaft No. 4; 86. Shaft No. 5; 87. Shaft hole No. 2; 88. Pulley No. 4; 89. Pulley No. 5; 810. Shaft No. 6; 811. Pulley No. 6. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 and Figure 2 A crushing device for recycling PET scrap includes a longitudinal mounting plate 1 that can be installed on a vertical plane, a first horizontal base plate 2 and a second horizontal base plate 3 fixedly installed on both sides of one end of the longitudinal mounting plate 1, and a drive motor 4 fixedly installed on one side of the longitudinal mounting plate 1. The longitudinal mounting plate 1 is fixedly installed on a vertical plane, and the opening end of the feeding chamber 73 faces upward.

[0021] To achieve the bidirectional crushing function of waste materials, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 3 and Figure 4 A reverse-rotation crushing mechanism 6 needs to be set up. Its structure includes a first rotating disk 61 and a second rotating disk 62 that can rotate in opposite directions, a first crushing wing 63 and a second crushing wing 64 installed at the rotating ends of the first rotating disk 61 and the second rotating disk 62 that can rotate and crush the waste, and a waste output hole 69 that can convey waste between the first rotating disk 61 and the second rotating disk 62. The waste continuously enters the waste output hole 69 and finally enters the crushing zone of the first crushing wing 63 and the second crushing wing 64. Under the action of gravity, the waste comes into contact with the rapidly rotating first crushing wing 63 and the second crushing wing 64 and is crushed by the first crushing wing 63 and the second crushing wing 64. The crushed waste will fall downward through the gap between the first crushing wing 63 and the second crushing wing 64. The fallen waste can be collected.

[0022] For the specific structure of the reverse rotation crushing mechanism 6, please refer to [link / reference]. Figure 3 and Figure 4 It also includes a first rotating shaft 65 integrally disposed at one end of the first rotating disk 61 and a second rotating shaft 66 integrally disposed at one end of the second rotating disk 62. One end of the second rotating shaft 66 is mounted inside the first horizontal base plate 2 via a bearing. A second pulley 68 is fixedly fitted on the middle shaft of the second rotating shaft 66. A first pulley 67 is fixedly fitted on the middle shaft of the first rotating shaft 65. A first crushing wing 63 and a second crushing wing 64 are fixedly installed on opposite ends of the first rotating disk 61 and the second rotating disk 62, respectively. A waste output hole 69 with open ends is provided at the center of the first rotating shaft 65. The first crushing wing 63 and the second crushing wing 64 are arranged in a staggered manner. The axis of the first rotating disk 61, the axis of the second rotating disk 62, the axis of the first rotating shaft 65, and the axis of the second rotating shaft 66 are on the same horizontal line.

[0023] To enable the compressed conveying of waste materials, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 5 and Figure 6 A waste conveying mechanism 7 needs to be set up. Its structure includes a feeding shell 71 installed on one side of the first turntable 61 and capable of feeding waste, an installation sleeve 72 set at the bottom of the feeding shell 71 and capable of guiding the waste, and a screw 78 installed in the installation sleeve 72 and capable of allowing the waste to enter the waste output hole 69. The waste is fed into the feeding chamber 73. Under the action of gravity, the waste will accumulate in the waste collection chamber 74 and contact part of the screw 78. The rotating screw 78 will drive the waste in contact with it, and the waste will be continuously compressed and conveyed into the waste output hole 69, thereby realizing the function of compressive conveying of waste.

[0024] For details regarding the specific structure of the waste conveying mechanism 7, please refer to [link / reference]. Figure 5 and Figure 6 It also includes a feeding chamber 73 located inside the feeding housing 71 and having an open top. The bottom of the feeding housing 71 is provided with an integrally formed mounting sleeve 72. Inside the mounting sleeve 72 is a waste collection chamber 74 that communicates with the bottom of the feeding chamber 73 and has open ends. One open end of the mounting sleeve 72 is mounted to the open end of a first rotating shaft 65 via a bearing and a sealing ring. The other open end of the mounting sleeve 72 is mounted with a sealing cover 75 via a bearing and a sealing ring. The sealing cover 75 has a central axial position... There is a first shaft hole 76, and a third rotating shaft 77 is installed inside the first shaft hole 76 via a bearing. A screw 78 is fixedly installed at one end of the third rotating shaft 77 located inside the waste collection cavity 74, and the screw 78 extends into the waste output hole 69. A third pulley 79 is fixedly fitted at the other end of the third rotating shaft 77. One side of the mounting sleeve 72 is fixedly connected to one end of the second horizontal base plate 3. During operation, the rotation of the screw 78 causes the waste around it to tend to move towards the waste output hole 69.

[0025] To improve the kinetic energy utilization of drive motor 4, please refer to... Figure 1 , Figure 2 , Figure 7 and Figure 8A coaxial rotating driven mechanism 8 needs to be set up. Its structure includes a first bevel gear 81 that drives the first turntable 61 to rotate, a second bevel gear 82 that drives the second turntable 62 and the screw 78 to rotate, and a third bevel gear 83 that rotates with the rotor of the drive motor 4 and drives the first and second bevel gears 81 and 82 to rotate. When the drive motor 4 is started, its rotor drives the third bevel gear 83 to rotate, and the third bevel gear 83 in turn drives the first and second bevel gears 81 and 82 to rotate. Since the meshing positions of the teeth of the first and third bevel gears 81 and 83 are symmetrically arranged with the meshing positions of the teeth of the second and third bevel gears 82 and 83, the fifth pulley 89 and the sixth pulley 811 will rotate in the same direction. When the drive motor 4 moves, pulleys 89 and 88 will rotate in opposite directions. This reverse rotation will cause turntables 61 and 62 to rotate in opposite directions via the synchronous belt 5, which in turn causes crushing wings 63 and 64 to rotate in opposite directions. The waste material will achieve better crushing effect under the action of reverse rotation, thereby improving crushing efficiency. The reverse rotation between pulleys 88 and 811 will cause the reverse rotation between shaft 65 and screw 78. This reverse rotation between shaft 65 and screw 78 will prevent the waste material from rotating in the same direction, which would lead to low conveying efficiency. This will speed up the waste material conveying efficiency and improve the kinetic energy utilization rate of the drive motor 4.

[0026] For the specific structure of the coaxial rotary driven mechanism 8, please refer to [link / reference]. Figure 7 and Figure 8It also includes a fourth rotating shaft 85 integrally disposed at one end of the first bevel gear 81 and a fifth rotating shaft 86 integrally disposed at one end of the second bevel gear 82. One end of the fifth rotating shaft 86 is mounted inside the first horizontal base plate 2 via a bearing, and the shaft body of the fourth rotating shaft 85 is mounted inside the second horizontal base plate 3 via a bearing. The tooth structure of the third bevel gear 83 meshes with the tooth structure of the first bevel gear 81 and the tooth structure of the second bevel gear 82, respectively. The third bevel gear 83 is connected to the rotor of the drive motor 4 via a coupling 84. A fourth pulley 88 is fitted around the outer periphery of the shaft body in the middle of the fourth rotating shaft 85, and a fifth pulley 89 is fitted around the outer periphery of the shaft body in the middle of the fifth rotating shaft 86. The first bevel gear 81 and the fourth rotating shaft... A second shaft hole 87 with open ends is provided at the center of shaft 85. A sixth rotating shaft 810 passing through the second shaft hole 87 is fixedly installed at the other end of the second bevel gear 82. The shaft body of the sixth rotating shaft 810 is installed inside the second shaft hole 87 through a bearing. A sixth pulley 811 is fixedly fitted at one end of the sixth rotating shaft 810. The meshing positions of the teeth of the first bevel gear 81 and the third bevel gear 83 are symmetrically arranged with the meshing positions of the teeth of the second bevel gear 82 and the third bevel gear 83. The fourth pulley 88 and the first pulley 67 are linked by a synchronous belt 5. The fifth pulley 89 and the second pulley 68 are linked by a synchronous belt 5. The sixth pulley 811 and the third pulley 79 are linked by a synchronous belt 5.

[0027] In use, the longitudinal mounting plate 1 is fixedly installed on a vertical plane, with the opening end of the feeding chamber 73 facing upwards. The drive motor 4 is started, and its rotor drives the third bevel gear 83 to rotate. The third bevel gear 83, in turn, drives the first bevel gear 81 and the second bevel gear 82 to rotate, feeding waste material into the feeding chamber 73. Under gravity, the waste material accumulates in the waste collection chamber 74 and comes into contact with part of the screw 78. The rotating screw 78 drives the waste material in contact with it, continuously compressing and conveying it into the waste output hole 69. The waste material continuously enters the waste output hole 69 and finally enters the crushing zone of the first crushing fin 63 and the second crushing fin 64. Under gravity, the waste material comes into contact with the rapidly rotating first crushing fin 63 and the second crushing fin 64, and is thus crushed by them. The crushed waste material then passes through the space between the first crushing fin 63 and the second crushing fin 64. The waste material falls downwards through the gap, and the fallen waste material is collected. During this process, since the meshing positions of the teeth of the first bevel gear 81 and the third bevel gear 83 are symmetrically arranged with the meshing positions of the teeth of the second bevel gear 82 and the third bevel gear 83, the fifth pulley 89 and the sixth pulley 811 will rotate in the same direction, while the fifth pulley 89 and the fourth pulley 88 will rotate in opposite directions. The reverse rotation of the fifth pulley 89 and the fourth pulley 88 will cause the first turntable 61 and the second turntable 62 to rotate in opposite directions through the synchronous belt 5, thereby causing the first crushing wing 63 and the second crushing wing 64 to rotate in opposite directions. The reverse rotation between the fourth pulley 88 and the sixth pulley 811 will cause the first rotating shaft 65 and the screw 78 to rotate in opposite directions. The reverse rotation of the first rotating shaft 65 and the screw 78 will prevent the waste material from rotating in the same direction, which would lead to low conveying efficiency, thereby accelerating the waste material conveying efficiency.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crushing device for recycling PET scrap, comprising a longitudinal mounting plate (1) that can be installed on a vertical plane, a first horizontal base plate (2) and a second horizontal base plate (3) fixedly installed on both sides of one end of the longitudinal mounting plate (1), and a drive motor (4) fixedly installed on one side of the longitudinal mounting plate (1), characterized in that: It also includes, The reverse rotation crushing mechanism (6) includes a first turntable (61) and a second turntable (62) that can rotate in the opposite direction, a first crushing wing (63) and a second crushing wing (64) installed at the rotating ends of the first turntable (61) and the second turntable (62) and capable of rotating and crushing waste materials, and a waste output hole (69) that can convey waste materials between the first turntable (61) and the second turntable (62). And the waste conveying mechanism (7), the structure of which includes a feeding shell (71) installed on one side of the first turntable (61) and capable of feeding waste, an installation sleeve (72) set at the bottom of the feeding shell (71) and capable of guiding the waste, and a screw (78) installed in the installation sleeve (72) and capable of allowing the waste to enter the waste output hole (69).

2. The crushing equipment for recycling PET scrap as described in claim 1, characterized in that: The reverse rotation crushing mechanism (6) further includes a first rotating shaft (65) integrally disposed at one end of the first turntable (61) and a second rotating shaft (66) integrally disposed at one end of the second turntable (62). One end of the second rotating shaft (66) is installed inside the first horizontal base plate (2) by a bearing. The second pulley (68) is fixedly mounted on the middle shaft of the second rotating shaft (66). The first pulley (67) is fixedly mounted on the middle shaft of the first rotating shaft (65). The first turning table (61) and the second turning table (62) are respectively fixedly mounted with a first crushing wing (63) and a second crushing wing (64) at opposite ends. The center of the first rotating shaft (65) is provided with a waste output hole (69) with open ends.

3. The crushing equipment for recycling PET scrap waste according to claim 2, characterized in that: The first crushing wing (63) and the second crushing wing (64) are arranged in a staggered manner.

4. The crushing equipment for recycling PET scrap waste according to claim 3, characterized in that: The center lines of the first turntable (61), the second turntable (62), the first rotating shaft (65), and the second rotating shaft (66) are on the same horizontal line.

5. The crushing equipment for recycling PET scrap waste according to claim 4, characterized in that: The waste conveying mechanism (7) further includes a feeding chamber (73) located inside the feeding shell (71) and having an open top. The bottom of the feeding shell (71) is provided with an integrally integrated mounting sleeve (72). Inside the mounting sleeve (72) is a waste collection chamber (74) that communicates with the bottom of the feeding chamber (73) and has open ends. One open end of the mounting sleeve (72) is mounted to the open end of the first rotating shaft (65) via a bearing and a sealing ring. The other open end of the mounting sleeve (72) is mounted to the open end of the first rotating shaft (65) via a bearing and a sealing ring. There is a packaging cover (75), and a first shaft hole (76) is provided at the center of the packaging cover (75). A third rotating shaft (77) is installed inside the first shaft hole (76) through a bearing. A screw (78) is fixedly installed at one end of the third rotating shaft (77) located inside the waste collection cavity (74), and the screw (78) extends into the waste output hole (69). A third pulley (79) is fixedly fitted at the other end of the third rotating shaft (77). One side of the mounting sleeve (72) is fixedly connected to one end of the second horizontal base plate (3).

6. The pulverizing equipment for recycling PET scrap as described in claim 5, characterized in that: During operation, the rotation of the screw (78) causes the waste material located around it to tend to move toward the inside of the waste output hole (69).

7. The crushing equipment for recycling PET scrap waste according to claim 1, characterized in that: It also includes a coaxial rotating driven mechanism (8), the structure of which includes a first bevel gear (81) that can drive the first turntable (61) to rotate, a second bevel gear (82) that can drive the second turntable (62) and the screw (78) to rotate, and a third bevel gear (83) that can rotate with the rotor of the drive motor (4) and drive the first bevel gear (81) and the second bevel gear (82) to rotate.

8. The crushing equipment for recycling PET scrap waste according to claim 7, characterized in that: The coaxial rotating driven mechanism (8) further includes a fourth rotating shaft (85) integrally disposed at one end of the first bevel gear (81) and a fifth rotating shaft (86) integrally disposed at one end of the second bevel gear (82). One end of the fifth rotating shaft (86) is mounted inside the first horizontal base plate (2) via a bearing. The shaft of the fourth rotating shaft (85) is mounted inside the second horizontal base plate (3) via a bearing. The tooth structure of the third bevel gear (83) meshes with the tooth structure of the first bevel gear (81) and the tooth structure of the second bevel gear (82) respectively. The third bevel gear (83) is connected to the drive via a coupling (84). The rotor of the motor (4) is connected. The fourth shaft (85) is fitted with a fourth pulley (88) around the shaft body in the middle. The fifth shaft (86) is fitted with a fifth pulley (89) around the shaft body in the middle. The first bevel gear (81) and the fourth shaft (85) are provided with a second shaft hole (87) with open ends. The other end of the second bevel gear (82) is fixedly installed with a sixth shaft (810) that passes through the second shaft hole (87). The shaft body of the sixth shaft (810) is installed inside the second shaft hole (87) through a bearing. One end of the sixth shaft (810) is fixedly fitted with a sixth pulley (811).

9. A crushing device for recycling PET scrap waste according to claim 8, characterized in that: The meshing positions of the first bevel gear (81) and the third bevel gear (83) are symmetrically arranged with the meshing positions of the second bevel gear (82) and the third bevel gear (83).

10. A crushing device for recycling PET scrap waste according to claim 9, characterized in that: The fourth pulley (88) and the first pulley (67) are linked by a synchronous belt (5), the fifth pulley (89) and the second pulley (68) are linked by a synchronous belt (5), and the sixth pulley (811) and the third pulley (79) are linked by a synchronous belt (5).

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