Recycling equipment for plastic defective products

Abstract

The invention relates to the technical field of non-metal waste treatment, in particular to recycling equipment for plastic defective products. In order to solve the problem that when a pipe rolls during crushing, the residence time of materials in a crushing cavity is prolonged, and the crushing efficiency is low. Comprising a bottom frame, a crushing shell is fixedly connected to the bottom frame, a connecting and guiding shell is fixedly connected to the crushing shell, a crushing roller set is arranged in the crushing shell, a motor is fixedly connected to the bottom frame, transmission is conducted between an output shaft of the motor and the crushing roller set through a belt wheel and a belt, extrusion rollers distributed in a mirror image mode are rotationally connected to the crushing shell, and the extrusion rollers are connected to the crushing shell. And the extrusion rollers in mirror image distribution are in transmission through a gear set. According to the pipe crushing device, a pipe is pre-compressed in advance through the extrusion rollers when the pipe is crushed, a cylindrical pipe is compressed into an elliptic cylindrical pipe, then vertical feeding crushing is conducted, the rolling probability of the pipe during crushing is reduced, and the crushing efficiency of the pipe is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of non-metallic waste treatment, in particular to a recycling device for defective plastic products. Background Art

[0002] PVC pipe is a plastic pipe made from polyvinyl chloride resin, supplemented with additives such as stabilizers and lubricants, and extruded through hot pressing. As one of the earliest plastic pipes developed and applied, PVC pipe is widely used in various fields such as construction, municipal administration, and industry due to its excellent corrosion resistance, lightweight, and good processing properties. High-toughness PVC pipe, in particular, has significantly improved its impact resistance and flexibility through modification techniques (such as the addition of toughening agents or the use of special processing techniques), making it more suitable for complex environments or high-stress scenarios.

[0003] However, during the production process, a certain proportion of defective products (such as substandard products or waste) will inevitably be produced due to reasons such as raw material defects, improper process control or equipment failure. If these defective products are not properly handled, they will not only waste resources but also pollute the environment.

[0004] Differential crushers are often used to crush defective PVC pipes. However, due to the smooth surface of PVC pipes, they tend to roll and slip on the crushing rollers during the crushing process, making them difficult to effectively engage. This rolling phenomenon not only prolongs the material's residence time in the crushing chamber, but also reduces crushing efficiency. Summary of the Invention

[0005] In order to overcome the above shortcomings, the present invention provides a recycling device for defective plastic products.

[0006] The technical solution of the present invention is: a recycling equipment for defective plastic products, including a base frame, the base frame is fixedly connected to a crushing shell, the crushing shell is fixedly connected to a receiving shell, a crushing roller group is arranged in the crushing shell, the base frame is fixedly connected to a motor, the output shaft of the motor and the crushing roller group are driven by a pulley and a belt, the crushing shell is rotatably connected to the mirror-distributed squeezing rollers, the mirror-distributed squeezing rollers are driven by a gear group, and the crushing shell is provided with an initial pressure mechanism for gradually squeezing defective products.

[0007] Furthermore, the squeezing roller is fixedly connected with squeezing strips distributed in a circumferential array.

[0008] Furthermore, the squeezing roller is fixedly connected to cutting rings distributed in a linear array, and the cutting rings are fixedly connected to the squeezing strips on the same squeezing roller.

[0009] Furthermore, mirror-distributed baffles are fixedly connected to the crushing shell, and the shortest distance between the mirror-distributed baffles is greater than the shortest distance between the mirror-distributed squeezing rollers.

[0010] Furthermore, the initial pressure mechanism includes fixed shells distributed in a rectangular array, and the fixed shells distributed in the rectangular array are all fixedly connected to the crushing shell. Two adjacent fixed shells on different sides are connected to a rotating shaft for common rotation, and the rotating shaft is fixed with a pre-pressing roller, and the pre-pressing roller is provided with a control component for controlling the extrusion state of defective products.

[0011] Furthermore, the control component includes a pre-pressing frame distributed in a circumferential array, and the pre-pressing frames distributed in the circumferential array are all slidably connected to the pre-pressing roller. The pre-pressing roller is provided with a cylindrical cavity distributed in a circumferential array, and a transmission medium that is difficult to compress is provided in the cylindrical cavity. The transmission medium in the cylindrical cavity is used to extrude the pre-pressing frame, and the pre-pressing roller is sealed and slidably connected with a mirror image and circumferentially arrayed piston rod, and the piston rod is located in an adjacent cylindrical cavity. A spring is provided between the piston rod and the pre-pressing roller, and an extrusion block is fixed in the fixed shell, and the extrusion block is used to extrude the adjacent piston rod.

[0012] Furthermore, receiving plates arranged in mirror image are fixedly connected to the receiving housing, and the shortest distance between the receiving plates arranged in mirror image is smaller than the distance between the axes of the pre-pressing rollers arranged in mirror image.

[0013] Furthermore, it also includes an adjustment mechanism for controlling the feeding intensity of defective products, the adjustment mechanism is arranged on one of the squeezing rollers, the adjustment mechanism includes a fixed shaft, the fixed shaft is fixedly connected to one of the squeezing rollers, the fixed shaft is rotatably connected to a transmission shaft, the transmission shaft is splined with a first transmission disk, the fixed shaft is fixedly connected to a second transmission disk, the first transmission disk and the second transmission disk are engaged with each other, the crushing shell is fixedly connected to a fixed frame, the fixed frame is rotatably connected to the second transmission disk, the first transmission disk is rotatably connected to a rotating shell, a sliding ring is provided on the rotating shell, and a mirror-distributed tension spring is provided between the sliding ring and the rotating shell.

[0014] Furthermore, the fixing frame is rotatably connected to a threaded rod, the fixing frame is fixedly connected to a fixing rod, the threaded rod is threadedly connected to the sliding ring, and the fixing rod is slidably connected to the sliding ring.

[0015] Furthermore, a first gear is fixedly connected to the rotating roller of the crushing roller group close to the fixed shaft, and a second gear is fixedly connected to the transmission shaft. The first gear is meshed with the second gear, and the number of teeth of the first gear is greater than the number of teeth of the second gear.

[0016] The beneficial effects are as follows: the present invention pre-compresses the pipe in advance through the squeezing roller when the pipe is crushed, compresses the cylindrical pipe into an elliptical cylindrical pipe, and then performs vertical feeding and crushing, thereby reducing the probability of the pipe rolling during crushing and improving the crushing efficiency of the pipe; through the cooperation of the pre-compression roller and the pre-compression frame, the compression amount per unit time is gradually changed (variable speed compression) when the pipe is pre-compressed, thereby preventing the pipe from being squeezed too much at one time and causing breakage; through the cooperation of the first transmission plate and the first transmission plate, the feeding pressure of the squeezing roller on the pipe is controlled, thereby ensuring the stability of the pipe during crushing and improving the efficiency of pipe crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the internal structure of the crushing shell of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the extrusion roller and the extrusion strip of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the crushing roller group and the squeezing roller of the present invention; Figure 5 This is a sectional view of the three-dimensional structure of the fixed shaft and the transmission shaft of the present invention; Figure 6 Schematic diagram of the three-dimensional structure of the cutting ring and the blocking plate of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the pre-pressing frame and the cylindrical cavity of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the cylindrical cavity and the piston rod of the present invention; Figure 9 An exploded view of the parts on the fixed shell of the present invention; Figure 10 It is a sectional view of the three-dimensional structure of the fixing frame and the sliding ring of the present invention; Figure 11 This is an exploded view of the first transmission plate and the rotating housing of the present invention.

[0018] The names and serial numbers of the parts in the figure are: 1. Base frame, 2. Crushing shell, 3. Leading shell, 4. Crushing roller group, 5. Motor, 6. Extrusion roller, 7. Extrusion bar, 8. Cutting ring, 81. Blocking plate, 9. Fixed shell, 10. Rotating shaft, 11. Pre-pressing roller, 12. Pre-pressing frame, 13. Cylindrical cavity, 14. Piston rod, 15. Extrusion block, 151. Leading plate, 16. Fixed shaft, 17. Transmission shaft, 18. First transmission plate, 19. Second transmission plate, 20. Fixed frame, 21. Rotating shell, 22. Sliding ring, 23. Threaded rod, 24. Fixed rod, 25. Tension spring, 26. First gear, 27. Second gear. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 This embodiment discloses a recycling device for defective plastic products, which is used to solve the problem that defective PVC pipes are prone to rolling on the crusher during crushing, thereby reducing the crushing efficiency.

[0021] like Figures 1-6 As shown, the recycling equipment includes a base frame 1, a crushing shell 2 is fixedly connected to the upper side of the base frame 1, and a receiving shell 3 is fixedly connected to the upper side of the crushing shell 2. The receiving shell 3 is a prism-shaped shell for receiving defective PVC pipes (hereinafter referred to as pipes). A crushing roller group 4 is provided in the crushing shell 2. The crushing roller group 4 is an existing differential crushing roller group with high shear force. An existing unloading device (such as a unloading conveyor belt, etc.) can be installed on the lower side of the crushing shell 2 to transport the "pipes" crushed from the crushing shell 2. A motor 5 is fixedly connected to the upper side of the base frame 1. The output shaft of the motor 5 and the crushing roller group 4 are driven by a pulley and a belt. The pulley is an existing six-groove pulley for enhancing kinetic energy transmission and reducing the probability of slippage. Two squeezing rollers 6 with left and right mirror distributions are rotatably connected to the crushing shell 2, and the two squeezing rollers 6 are transmitted through a gear group. The squeezing roller 6 is fixed with a circumferential array of squeezing bars 7, which are made of hard metal (such as high carbon steel, etc.). In this way, the pipe is squeezed and an indentation is generated on its surface, which is convenient for the subsequent grasping and crushing of the crushing roller group 4. The squeezing roller 6 is fixed with a linear array of cutting rings 8. The outer ring of the cutting ring 8 is a hard and sharp blade, which is used to preliminarily cut the thinner-walled pipe and destroy the strength of the thicker-walled pipe for subsequent crushing. The cutting ring 8 and the squeezing bar 7 on the same squeezing roller 6 are fixed to each other. Two baffle plates 81 with left and right mirror images are fixed in the crushing shell 2. The shortest distance between the two baffle plates 81 is greater than the shortest distance between the two squeezing rollers 6 to prevent the pipe from rebounding after being compressed and affecting the feeding. The crushing shell 2 is provided with an initial pressure mechanism for gradually squeezing defective products.

[0022] like Figure 1 、 Figure 2 and Figure 7-Figure 9As shown, the initial pressure mechanism includes four fixed shells 9 distributed in a rectangular array, and two adjacent fixed shells 9 are distributed in a mirror-image manner. The four fixed shells 9 are all fixedly connected to the crushing shell 2, and the two adjacent fixed shells 9 on the front and rear opposite sides are connected to the rotating shaft 10 for rotation together. The rotating shaft 10 is fixedly connected to a pre-pressing roller 11, and the two pre-pressing rollers 11 are distributed in a left and right mirror-image manner, and the shortest distance between the two pre-pressing rollers 11 is greater than the shortest distance between the two squeezing rollers 6. The pre-pressing roller 11 is provided with a control component for controlling the squeezing state of the defective product, and the control component includes a pre-pressing frame 12 distributed in a circumferential array, and the pre-pressing frame 12 distributed in the circumferential array is all slidably connected to the pre-pressing roller 11, and the pre-pressing roller 11 is provided with a cylindrical cavity 13 distributed in a circumferential array, and the cylindrical cavity 13 is provided with The transmission medium that is difficult to compress (such as hydraulic oil, etc.) is sealed and slidably connected to the pre-stressing roller 11 with a piston rod 14 that is mirror-imaged and distributed in a circumferential array. The piston rod 14 is located in the adjacent cylindrical cavity 13. The transmission medium in the cylindrical cavity 13 is used to extrude the pre-stressing frame 12. A spring is provided between the piston rod 14 and the pre-stressing roller 11. An extrusion block 15 is fixedly connected to the fixed shell 9. Two adjacent extrusion blocks 15 are distributed in a mirror-image manner. The extrusion blocks 15 are used to extrude adjacent piston rods 14. Two receiving plates 151 with mirror-image distribution on the left and right are fixedly connected to the receiving shell 3. The surface of the receiving plate 151 is made of smooth metal, and the shortest distance between the two receiving plates 151 is less than the distance between the axes of the mirror-imaged pre-stressing rollers 11, so that the pipe can more easily enter between the two pre-stressing rollers 11.

[0023] The working process of the recycling device in this embodiment is as follows: Preparation work: Move the chassis 1 to the working position and connect the motor 5 to the circuit, then connect the squeezing roller 6 to the crushing roller group 4 for power connection, prepare the pipe to be crushed, and the preparation work is completed.

[0024] Crushing work: Start the motor 5, which drives the crushing roller group 4 to rotate through the pulley and belt. The crushing roller group 4 drives the two squeezing rollers 6 to rotate in opposite directions together through the power connection. Then the staff puts the pipe vertically from top to bottom into the receiving shell 3 and presses it downward. The lower end of the pipe moves downward and is squeezed onto the two pre-pressing rollers 11 under the guidance of the receiving plate 151. As the downward pressing continues, the pipe drives the two pre-pressing rollers 11 to rotate downward. The two pre-pressing rollers 11 rotate in opposite directions and squeeze the pipe (push the pipe into the device). In the process of the rotation of the pre-pressing roller 11, taking the two adjacent piston rods 14 in the front and back as an example (the two piston rods 14 in the same cylindrical cavity 13), the pre-pressing roller 11 drives the upper piston rod 14 to rotate And squeeze the adjacent squeezing blocks 15, so that the front and rear piston rods 14 gradually move towards each other. In the process of the two piston rods 14 moving towards each other, the piston rod 14 squeezes the adjacent pre-pressing frame 12 through the hydraulic oil to move in the direction away from the axis of the pre-pressing roller 11, and as the pre-pressing roller 11 rotates, the pre-pressing frame 12 contacts and squeezes to the surface of the pipe. As the pre-pressing roller 11 continues to rotate, the piston rod 14 and the squeezing block 15 are gradually squeezed and move towards each other (that is, the pre-pressing frame 12 gradually extends as the two pre-pressing rollers 11 rotate towards each other), and the degree of squeezing of the pipe by the pre-pressing frame 12 also increases synchronously (as the pre-pressing frame 12 gradually extends, its rotation radius gradually increases, and the pipe is gradually squeezed), thereby preventing the pipe from being squeezed too much at one time and causing breakage.

[0025] Until the pipe is initially squeezed and moves downward and contacts the position between the two squeezing rollers 6, the two squeezing rollers 6 drive the pipe downward, and the squeezing rollers 6 squeeze the pipe again. The squeezing strips 7 on the squeezing rollers 6 squeeze and bite the pipe, creating indentations on the pipe surface, and in this process the cutting rings 8 simultaneously cut the pipe surface (thinner pipes are cut, and thicker pipes are grooved). As the squeezing rollers 6 transport the pipe downward, the pipe contacts and is squeezed between the crushing rollers 4. Due to the indentations on the pipe, it is easier to be drawn into the crushing rollers 4, thereby gradually crushing the pipe. In this process, the squeezing rollers 6 continue to push the pipe toward the crushing rollers. 4. Extrusion conveying (i.e. forced feeding) reduces the probability of the pipe rolling on the crushing roller group 4 and affecting the crushing effect. In the crushing process, the cutting ring 8 limits the forward and backward movement of the pipe, so that the pipe keeps moving vertically downward during crushing, improving the safety of the device during operation (the above example is only the working process of one pipe, and multiple pipes can also be crushed at the same time). When the pipe is crushed, the staff turns off the motor 5, and the work is completed. The squeezing roller 6 performs pre-compression when the pipe is crushed, compressing the cylindrical pipe into an elliptical cylindrical pipe before crushing, reducing the probability of the pipe rolling during crushing and improving the pipe crushing efficiency.

[0026] Example 2 This embodiment discloses a recycling device for defective plastic products, which is further improved on the basis of Example 1.

[0027] The structure, connection relationship and working process of the recovery equipment in Example 1 are not described in detail, and the working principle of the following structure is mainly explained.

[0028] like Figure 2-Figure 5 、 Figure 10 and Figure 11 As shown, it also includes an adjustment mechanism for controlling the feeding intensity of defective products, the adjustment mechanism is arranged on the front side of the right squeezing roller 6, the adjustment mechanism includes a fixed shaft 16, the fixed shaft 16 is fixedly connected to the right squeezing roller 6, the front side of the fixed shaft 16 is rotatably connected to the transmission shaft 17, the transmission shaft 17 is splined with a first transmission disc 18, and the fixed shaft 16 is fixedly connected to a second transmission disc 19. The first transmission disc 18 and the second transmission disc 19 are both provided with limit strips distributed in a circumferential array, and the limit strips are provided with an inclined surface. The limit strips distributed in a circumferential array on the first transmission disc 18 and the limit strips distributed in a circumferential array on the second transmission disc 19 are interlocked, that is, the inclined surfaces of the adjacent limit strips of the two contact and extrude with each other, and the front side of the crushing shell 2 is fixedly connected to the second transmission disc 1 9 is a fixed frame 20 that is rotatably connected. A rotating shell 21 is rotatably connected to the first transmission disc 18. A sliding ring 22 is slidably connected to the rotating shell 21. Two tension springs 25 with upper and lower mirror distributions are provided between the sliding ring 22 and the rotating shell 21. The fixed frame 20 is rotatably connected to a threaded rod 23 that is threadedly connected to the sliding ring 22. The threaded rod 23 passes through the rotating shell 21. The fixed frame 20 is fixed with a fixed rod 24 that is slidably connected to the sliding ring 22. A first gear 26 is fixed to the rotating roller on the right side of the crushing roller group 4. A second gear 27 is fixed to the transmission shaft 17. The first gear 26 is meshed with the second gear 27, and the number of teeth of the first gear 26 is greater than the number of teeth of the second gear 27. That is, the rotation speed of the transmission shaft 17 is greater than the rotation speed of the rotating roller on the right side of the crushing roller group 4.

[0029] The working process of the recycling device in this embodiment is as follows: Preparation: Before starting the crushing work, the staff first determines the forced feeding force required for crushing according to the pipe data (pipe thickness, hardness, etc.) (if the forced feeding force is too large, the broken pieces will be larger, and if the forced feeding force is too small, the crushing speed will be slowed down, affecting the crushing efficiency). Then the staff rotates the threaded rod 23 according to the required forced feeding force (the more difficult the pipe is to crush, the more turns the threaded rod 23 makes). The threaded rod 23 drives the sliding ring 22 to move backward through the thread. The sliding ring 22 moves backward and pulls the tension spring 25. The tension spring 25 applies backward pressure to the first transmission disc 18 through the rotating shell 21, so that the first transmission disc 18 and the second transmission disc 19 are tightly fitted. The preparation work is completed.

[0030] Crushing work: After the preparatory work is completed, repeat the contents of Example 1 to crush the pipe. During the crushing process, the crushing roller group 4 drives the transmission shaft 17 to rotate through the engagement of the second gear 27 with the first gear 26. The transmission shaft 17 drives the first transmission plate 19 to rotate through the extrusion of the first transmission plate 18 and the upper inclined surface of the first transmission plate 19. The first transmission plate 19 drives the squeezing roller 6 to rotate through the fixed shaft 16. Since the rotation speed of the squeezing roller 6 is greater than the rotation speed of the crushing roller group 4, the squeezing roller 6 will continue to apply pressure to the crushing roller group 4 through the pipe during the crushing process. When the pressure is too large, the extrusion force between the first transmission plate 18 and the first transmission plate 19 is difficult to ensure the two During normal transmission between the two, the first transmission plate 18 and the first transmission plate 19 will move relative to each other (the first transmission plate 18 moves forward along the transmission shaft 17), and at the same time, the tension spring 25 is stretched, thereby temporarily disconnecting the power transmission of the squeezing roller 6. As the pipe is crushed, the feeding pressure is reduced, and the first transmission plate 18 and the first transmission plate 19 are driven by the tension spring 25 to resume engagement (that is, power transmission is restored between the squeezing roller 6 and the crushing roller group 4), thereby continuing to apply feeding pressure to the pipe. The first transmission plate 18 and the first transmission plate 19 cooperate to control the feeding pressure of the squeezing roller 6 on the pipe, thereby ensuring stability during pipe crushing and improving the efficiency of pipe crushing.

[0031] The above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A recycling device for defective plastic products, characterized by: The invention comprises a base frame (1), wherein the base frame (1) is fixedly connected to a crushing shell (2), a guide shell (3) is fixedly connected to the crushing shell (2), a crushing roller group (4) is arranged in the crushing shell (2), a motor (5) is fixedly connected to the base frame (1), an output shaft of the motor (5) and the crushing roller group (4) are driven by a pulley and a belt, a mirror-distributed squeezing roller (6) is rotatably connected to the crushing shell (2), and the mirror-distributed squeezing rollers (6) are driven by a gear group, and an initial pressing mechanism for gradually squeezing defective products is arranged on the crushing shell (2).

2. The equipment for recycling defective plastic products according to claim 1, characterized in that: The squeezing roller (6) is fixedly connected to squeezing strips (7) distributed in a circumferential array.

3. The equipment for recycling defective plastic products according to claim 2, characterized in that: Cutting rings (8) distributed in a linear array are fixedly connected to the squeezing roller (6), and the cutting rings (8) are fixedly connected to the squeezing strips (7) on the same squeezing roller (6).

4. The equipment for recycling defective plastic products according to claim 1, characterized in that: Mirror-distributed blocking plates (81) are fixedly connected to the crushing shell (2), and the shortest distance between the mirror-distributed blocking plates (81) is greater than the shortest distance between the mirror-distributed squeezing rollers (6).

5. The equipment for recycling defective plastic products according to claim 4, characterized in that: The initial pressing mechanism comprises fixed shells (9) distributed in a rectangular array, wherein the fixed shells (9) distributed in the rectangular array are all fixedly connected to the crushing shell (2), and two adjacent fixed shells (9) on different sides are connected to a rotating shaft (10) for common rotation, and the rotating shaft (10) is fixedly connected to a pre-pressing roller (11), and a control component for controlling the extrusion state of defective products is provided on the pre-pressing roller (11).

6. The equipment for recycling defective plastic products according to claim 5, characterized in that: The control component includes a pre-pressing frame (12) distributed in a circumferential array, and the pre-pressing frames (12) distributed in a circumferential array are all slidably connected to the pre-pressing roller (11). The pre-pressing roller (11) is provided with a cylindrical cavity (13) distributed in a circumferential array, and a transmission medium that is difficult to compress is provided in the cylindrical cavity (13). The transmission medium in the cylindrical cavity (13) is used to extrude the pre-pressing frame (12). The pre-pressing roller (11) is sealed and slidably connected with a mirror image and circumferentially distributed piston rod (14), and the piston rod (14) is located in an adjacent cylindrical cavity (13). A spring is provided between the piston rod (14) and the pre-pressing roller (11). An extrusion block (15) is fixed in the fixed shell (9), and the extrusion block (15) is used to extrude the adjacent piston rod (14).

7. The equipment for recycling defective plastic products according to claim 6, characterized in that: Mirror-distributed receiving plates (151) are fixedly connected in the receiving shell (3), and the shortest distance between the mirror-distributed receiving plates (151) is smaller than the distance between the axes of the mirror-distributed pre-pressing rollers (11).

8. The equipment for recycling defective plastic products according to claim 7, characterized in that: The crushing shell (2) further comprises an adjusting mechanism for controlling the feeding intensity of defective products, wherein the adjusting mechanism is arranged on one of the squeezing rollers (6), and the adjusting mechanism comprises a fixed shaft (16), wherein the fixed shaft (16) is fixedly connected to one of the squeezing rollers (6), and the fixed shaft (16) is rotatably connected to a transmission shaft (17), wherein a first transmission disc (18) is spline-connected to the transmission shaft (17), and a second transmission disc (19) is fixedly connected to the fixed shaft (16), and the first transmission disc (18) and the second transmission disc (19) are engaged with each other, and the crushing shell (2) is fixedly connected to a fixed frame (20), wherein the fixed frame (20) is rotatably connected to the second transmission disc (19), and a rotating shell (21) is rotatably connected to the first transmission disc (18), and a sliding ring (22) is provided on the rotating shell (21), and a mirror-distributed tension spring (25) is provided between the sliding ring (22) and the rotating shell (21).

9. The equipment for recycling defective plastic products according to claim 8, characterized in that: The fixing frame (20) is rotatably connected to a threaded rod (23), the fixing frame (20) is fixedly connected to a fixing rod (24), the threaded rod (23) is threadedly connected to the sliding ring (22), and the fixing rod (24) is slidably connected to the sliding ring (22).

10. The equipment for recycling defective plastic products according to claim 9, characterized in that: A first gear (26) is fixedly connected to the rotating roller of the crushing roller group (4) close to the fixed shaft (16), and a second gear (27) is fixedly connected to the transmission shaft (17). The first gear (26) is meshed with the second gear (27), and the number of teeth of the first gear (26) is greater than the number of teeth of the second gear (27).

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