Waste plastic decomposition device

Abstract

The invention relates to the technical field of plastic recovery, in particular to a waste plastic decomposition device. The crushing equipment comprises a feeding bin of the crushing equipment, a crushing bin is mounted at the bottom of the feeding bin, mounting plates are mounted on the front face and the back face of the inner wall of the crushing bin correspondingly, two crushing rollers are arranged between the two mounting plates, and a first rotating shaft and a second rotating shaft are mounted on the left sides of the two crushing rollers correspondingly; the first rotating shaft and the second rotating shaft penetrate through the inner wall of the smashing bin to be provided with a driving assembly, and a material receiving assembly is installed at the bottom of the smashing roller and used for receiving smashed plastic particles. The adjusting assembly drives the arc-shaped screen to rotate back and forth at the bottoms of the two crushing rollers, stacked sheet-shaped large-particle plastic is conveyed to the rotating shaft through the material stirring rod, the stacked sheet-shaped large-particle plastic is put into the position between the two crushing rollers again through the rotating material stirring hopper, and plastic particles which do not conform to specifications are crushed again.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic recycling, in particular to a waste plastic decomposition device. BACKGROUND

[0002] Plastic recycling refers to the process of reprocessing and treating waste plastics through certain technology and method, so that they can be used again. With the wide application of plastic products, the amount of plastic waste has increased dramatically, and plastic recycling is of great significance to environmental protection and resource conservation.

[0003] The steps of decomposing plastics generally include cleaning classified plastics to remove contaminants on the surface, and pretreating the cleaned plastics. The plastics need to be crushed into small pieces by a plastic crushing device for subsequent material decomposition treatment, so as to change the physical form of the plastics by heating, melting and other physical means, and make them reshape.

[0004] The plastic is crushed into particles of uniform size, which is beneficial to improve the decomposition efficiency and quality. After the plastic is put into the crushing device, it is crushed by the crushing roller and falls from the discharge port at the bottom of the crushing device. Since the plastic has a certain ductility, the plastic block is deformed into a sheet shape when it is crushed by the crushing roller, and the sheet-shaped plastic also falls from the middle of the crushing roller, which causes the size of the plastic particles to be uneven. Therefore, a waste plastic decomposition device is needed to crush the plastic particles into more uniform sizes. SUMMARY

[0005] The present application aims to provide a waste plastic decomposition device to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides a waste plastic decomposition device, which comprises a feed bin of a crushing device, a crushing bin is installed at the bottom of the feed bin, an discharge port is formed at the bottom of the crushing bin, mounting plates are installed on the front and back of the inner wall of the crushing bin, a crushing roller is arranged in the middle of the two mounting plates, two crushing rollers are provided, the two crushing rollers are rotatably installed in the crushing bin, a shaft one and a shaft two are respectively installed on the left side of the two crushing rollers, a driving assembly is installed through the inner wall of the crushing bin, a receiving assembly is installed at the bottom of the crushing roller, and the receiving assembly is used to receive the crushed plastic particles. An adjusting assembly is installed at the bottom of the receiving assembly, the adjusting assembly drives the receiving assembly to reciprocate left and right, and the received plastic particles are screened. The bottom of the mounting plate is provided with a mounting port, one side of the inner wall of the mounting port penetrates to the outside of the side of the mounting plate close to the crushing roller, the inside of the mounting port is provided with a stirring assembly, the adjusting assembly drives the material receiving assembly to reciprocate left and right, which is used for screening the plastic particles, and drives the plastic which is not completely crushed and cannot be screened to move to the stirring assembly, and the stirring assembly is used for driving the plastic which is not completely crushed and cannot be screened to enter the crushing area of the crushing roller for secondary crushing.

[0007] As a further improvement of the technical solution, the material receiving assembly comprises an arc-shaped screen mesh arranged at the bottom of the two crushing rollers, and connecting rods are fixedly installed on both sides of the arc-shaped screen mesh. Arc-shaped notches are formed in the inner walls of the crushing bin on both sides.

[0008] As a further improvement of the technical solution, the adjusting assembly comprises a stepping motor installed on the right side of the crushing bin, a rotating gear is installed on the output shaft of the stepping motor penetrating into the inside of the crushing bin, the rotating gear is arranged at the bottom of the connecting rod, a gear notch is formed in the bottom of the connecting rod, and the rotating gear is in meshing connection with the gear notch.

[0009] As a further improvement of the technical solution, the top end of the arc-shaped notch extends to the inside of the mounting port, and the arc-shaped screen mesh can be rotated into the inside of the mounting port through the connecting rod.

[0010] As a further improvement of the technical solution, a stirring rod is fixedly installed in the inside of the crushing bin, and the stirring rod is arranged at the top of the arc-shaped screen mesh and used for gathering the flaky large-particle plastic at the top of the arc-shaped screen mesh.

[0011] As a further improvement of the technical solution, the stirring assembly comprises a rotating shaft rotatably installed in the inside of the crushing bin, a plurality of stirring hoppers are fixedly installed on the outer surface of the rotating shaft, and the plurality of stirring hoppers are circumferentially arranged on the outer surface of the rotating shaft and used for stirring the flaky large-particle plastic which is not completely crushed and conveyed by the arc-shaped screen mesh into the crushing roller for re-crushing.

[0012] As a further improvement of the technical solution, the driving assembly comprises a gear one sleeved on the outer surface of the rotating shaft one and a gear two sleeved on the outer surface of the rotating shaft two, the gear one is in meshing connection with the gear two, and a driving motor is installed on the outside of the rotating shaft one and used for driving the two crushing rollers to rotate.

[0013] As a further improvement of the technical solution, two mounting ports and two rotating shafts are arranged, the two mounting ports and the two rotating shafts are symmetrically distributed on both sides of the two crushing rollers, and a connecting shaft one and a connecting shaft two are respectively installed on the left side of the two rotating shafts.

[0014] As a further improvement to this technical solution, track one and track two are respectively sleeved on the outer surfaces of connecting shaft one and connecting shaft two, with the other end of track one sleeved on the outer surface of rotating shaft one and the other end of track two sleeved on the outer surface of rotating shaft two.

[0015] As a further improvement to this technical solution, a separating screen is installed at the bottom of the arc-shaped screen, which is used to further separate the plastic particles after they have been screened by the arc-shaped screen.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this waste plastic decomposition device, the drive motor can drive two crushing rollers to rotate in opposite directions to crush the plastic, and the rotating shaft is connected to the rotating shaft installed at one end of the two crushing rollers through the crawler, so that the drive motor can drive the two rotating shafts and the two crushing rollers to rotate together.

[0017] 2. In this waste plastic decomposition device, the adjustment component drives the arc screen to reciprocate at the bottom of the two crushing rollers, and the accumulated large flaky plastic particles are conveyed to the rotating shaft through the feeding rod. The rotating feeding hopper feeds the accumulated large flaky plastic particles back into the middle of the two crushing rollers, and the plastic particles that do not meet the specifications are crushed again, so as to achieve the effect of uniform crushing of plastic particles. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the crushing roller structure of the present invention; Figure 3 This is a schematic diagram of the arc-shaped screen structure of the present invention; Figure 4 This is a schematic diagram of the feeding hopper structure of the present invention; Figure 5 This is a schematic diagram of the mounting port structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the drive component structure of the present invention; Figure 8 This is a schematic diagram of the rotating shaft structure of the present invention.

[0019] The meanings of the labels in the diagram are as follows: 1. Feed hopper; 2. Crushing chamber; 21. Discharge port; 22. Mounting plate; 23. Crushing roller; 24. Rotating shaft one; 25. Rotating shaft two; 26. Feeding assembly; 201. Mounting port; 202. Rotating shaft; 203. Feeding hopper; 3, drive assembly; 301, gear one; 302, gear two; 303, drive motor; 4, material receiving assembly; 401, arc-shaped screen; 402, connecting rod; 403, arc-shaped notch; 5, adjusting assembly; 501, stepper motor; 502, gear tooth; 503, tooth notch; 6, stirring rod; 7, connecting shaft one; 71, connecting shaft two; 8, track one; 81, track two; 9, sub-screen. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0022] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0023] EMBODIMENTS Please refer to Figures 1-8The embodiment aims to provide a waste plastic decomposition device, which comprises a feeding bin 1 of a crushing device, a crushing bin 2 is installed at the bottom of the feeding bin 1, a discharge port 21 is formed at the bottom of the crushing bin 2, mounting plates 22 are installed on the front and back of the inner wall of the crushing bin 2, a crushing roller 23 is arranged in the middle of the two mounting plates 22, the two crushing rollers 23 are arranged, the two crushing rollers 23 are rotatably installed in the crushing bin 2, a rotating shaft one 24 and a rotating shaft two 25 are respectively installed on the left side of the two crushing rollers 23, the rotating shaft one 24 and the rotating shaft two 25 penetrate through the inner wall of the crushing bin 2 and are installed with a driving assembly 3, a receiving assembly 4 is installed at the bottom of the crushing roller 23, and the receiving assembly 4 is used for receiving the crushed plastic particles; The bottom of the receiving assembly 4 is installed with an adjusting assembly 5, the adjusting assembly 5 drives the receiving assembly 4 to reciprocate left and right, and the plastic particles received are screened; A mounting port 201 is formed at the bottom of the mounting plate 22, the mounting port 201 penetrates through one side of the inner wall of the mounting plate 22 to the outside of the side close to the crushing roller 23, a stirring assembly 26 is arranged in the mounting port 201, the adjusting assembly 5 drives the receiving assembly 4 to reciprocate left and right, which is used for screening the plastic particles and driving the plastic which is not completely crushed and cannot be screened to the stirring assembly 26, and the stirring assembly 26 is used for driving the plastic which is not completely crushed and cannot be screened to enter the crushing area of the crushing roller 23 for secondary crushing; The stirring assembly 26 comprises a rotating shaft 202 rotatably installed in the crushing bin 2, and a plurality of stirring hoppers 203 are fixedly installed on the outer surface of the rotating shaft 202, the plurality of stirring hoppers 203 are distributed in a circumferential array on the outer surface of the rotating shaft 202, and are used for stirring the large flaky plastic particles which are not completely crushed and are conveyed by the arc-shaped screen 401 into the crushing roller 23 for re-crushing.

[0024] Further, the two crushing rollers 23 installed in the crushing bin 2 are driven by the driving motor 303 to rotate, the plastic put into the feeding bin 1 is crushed, the crushed plastic falls onto the receiving assembly 4 at the bottom of the two crushing rollers 23, the receiving assembly 4 falls down for the plastic which meets the size of the crushed particles, and the receiving assembly 4 receives the large flaky plastic particles which do not meet the size, the receiving assembly 4 is driven by the adjusting assembly 5 to reciprocate left and right, the large flaky plastic particles collected at the top of the receiving assembly 4 are moved to the rotating shaft 202, the rotating shaft 202 rotates, the stirring hoppers 203 on the outer surface of the rotating shaft 202 can stir the large flaky plastic particles, the large flaky plastic particles are put into the crushing roller 23 from the mounting port 201, and the large flaky plastic particles are crushed again by the crushing roller 23, so that the effect of uniformly crushing the plastic particles is achieved.

[0025] Firstly, considering how to receive and move the crushed particles, the embodiment shows Figure 3 、 Figure 5 and Figure 8The specific structure of the docking assembly 4 and the adjusting assembly 5 is disclosed, the docking assembly 4 comprises an arc-shaped screen 401 arranged at the bottom of the two crushing rollers 23, and connecting rods 402 are fixedly installed on the two sides of the arc-shaped screen 401; arc-shaped notches 403 are formed in the inner walls of the crushing bin 2.

[0026] The adjusting assembly 5 comprises a stepping motor 501 installed on the right side of the crushing bin 2, the output shaft of the stepping motor 501 penetrates into the inside of the crushing bin 2 and is provided with a rotating gear 502, the rotating gear 502 is arranged at the bottom of the connecting rod 402, the bottom of the connecting rod 402 is provided with a gear notch 503, and the rotating gear 502 is in meshing connection with the gear notch 503. The top of the arc-shaped notch 403 extends to the inside of the mounting port 201, and the arc-shaped screen 401 can be rotated into the inside of the mounting port 201 through the connecting rod 402.

[0027] Further, the arc-shaped screen 401 is installed at the bottom of the two crushing rollers 23, the two sides of the arc-shaped screen 401 are connected through the connecting rod 402, so that the arc-shaped screen 401 can be installed into the arc-shaped notch 403 formed in the inside of the crushing bin 2 through the connecting rod 402, and the arc-shaped screen 401 can slide in an arc shape in the inside of the arc-shaped notch 403; the rotating gear 502 is installed in the inside of the crushing bin 2, the rotating gear 502 is installed at the bottom of the connecting rod 402, the bottom of the connecting rod 402 is provided with a plurality of gear notches 503 arranged uniformly, so that the gear notches 503 can be in meshing connection with the rotating gear 502; the rotating gear 502 is connected with the stepping motor 501 installed outside the crushing bin 2, the stepping motor 501 is started, can drive the rotating gear 502 to mesh with the gear notches 503, and then drive the arc-shaped screen 401 to rotate in the inside of the arc-shaped notch 403; the top of the arc-shaped notch 403 is formed into the inside of the mounting port 201, so that the arc-shaped screen 401 can be rotated into the inside of the mounting port 201; the sheet-shaped large plastic particles accumulated on the arc-shaped screen 401 are sent to the outside of the rotating shaft 202, are rotated by the rotating shaft 202, are sent to the middle of the two crushing rollers 23 by the stirring rod 6, are crushed again, and are crushed until the plastic particles meet the required particle size.

[0028] Secondly, considering that the arc-shaped screen 401 rotates, one end is rotated into the mounting port 201 on one side, the other end cannot be connected with the inner wall, the space below the two crushing rollers 23 cannot be completely covered, and the plastic particles may splash and flow out of the discharge port 21 directly. Figure 5 With Figure 8 The bottom of the arc-shaped screen 401 is provided with a sieve screen 9, the sieve screen 9 is used for re-screening the plastic particles screened by the arc-shaped screen 401, the sieve screen 9 is arranged below the arc-shaped screen 401, the sheet-shaped large plastic particles are collected, and subsequent unified treatment is performed.

[0029] Again, considering the accumulation of sheet-shaped large particles of plastic on the arc-shaped screen 401, the arc-shaped screen 401 rotates in an arc shape, which makes the sheet-shaped large particles of plastic roll down and cannot be sent to the rotating shaft 202. To solve this problem, Figure 5 With Figure 6 The inside of the crushing bin 2 is fixedly installed with a stirring rod 6, which is arranged at the top of the arc-shaped screen 401 and is used to gather the sheet-shaped large particles of plastic at the top of the arc-shaped screen 401.

[0030] By installing the stirring rod 6 at the top of the arc-shaped screen 401, when the arc-shaped screen 401 rotates backward, the stirring rod 6 will gather the plastic particles to the front end of the arc-shaped screen 401. When the stepping motor 501 switches the rotating direction, the arc-shaped screen 401 rotates forward, the plastic particles gathered to the front end are sent to the rotating shaft 202, and the stirring rod 6 again gathers the sheet-shaped large particles of plastic to the rear end of the arc-shaped screen 401. Thus, the plastic particles can be sent to the rotating shaft 202 for conveying.

[0031] Finally, considering the problem of how the rotating shaft 202 and the crushing roller 23 rotate, it is shown that Figure 1 With Figure 7 The specific structure of the driving assembly 3 is disclosed, which includes a gear one 301 sleeved on the outer surface of the rotating shaft one 24 and a gear two 302 sleeved on the outer surface of the rotating shaft two 25. The gear one 301 and the gear two 302 are meshed and connected. The driving motor 303 is installed on the outside of the rotating shaft one 24, which is used to drive the two crushing rollers 23 to rotate.

[0032] The mounting port 201 and the rotating shaft 202 are both provided with two, and the two mounting ports 201 and the rotating shaft 202 are symmetrically distributed on both sides of the two crushing rollers 23. The left sides of the two rotating shafts 202 are respectively provided with a connecting shaft one 7 and a connecting shaft two 71. The outer surfaces of the connecting shaft one 7 and the connecting shaft two 71 are respectively sleeved with a track one 8 and a track two 81. The other end of the track one 8 is sleeved on the outer surface of the rotating shaft one 24, and the other end of the track two 81 is sleeved on the outer surface of the rotating shaft two 25.

[0033] Further, one end of the two crushing rollers 23 is respectively installed with rotating shaft one 24 and rotating shaft two 25, the rotating shaft one 24 is connected with the driving motor 303 through the connecting piece, so that the driving motor 303 is started to drive the rotating shaft one 24 to rotate, and then the gear one 301 sleeved on the outer surface of the rotating shaft one 24 drives the gear two 302 sleeved on the outer surface of the rotating shaft two 25 to rotate, so that the two crushing rollers 23 rotate oppositely to crush the plastic, and the track one 8 and the track two 81 are respectively sleeved on the outer surfaces of the rotating shaft one 24 and the rotating shaft two 25, so that the track one 8 is connected to the outer surface of the connecting shaft one 7, and the track two 81 is connected to the outer surface of the connecting shaft two 71, to drive the two rotating shafts 202 to rotate, and the connecting shaft one 7 and the rotating shaft one 24 rotate in the same direction, and the connecting shaft two 71 and the rotating shaft two 25 rotate in the same direction, so that the sheet-shaped large plastic particles are sent to the middle of the two crushing rollers 23 for crushing again.

[0034] In summary, the working principle of the present application is as follows: When the plastic is crushed, the driving motor 303 drives the two crushing rollers 23 to rotate, the two rotating shafts 202 are connected to the outer surfaces of the rotating shafts through the tracks, and are driven by the driving motor 303 to rotate, the feeding bin 1 is put into the plastic, and the plastic is crushed by the two crushing rollers 23, the crushed plastic particles fall into the arc-shaped screen 401 at the bottom of the two crushing rollers 23, the plastic particles meeting the particle size fall from the arc-shaped screen 401 to the sieve 9, and then flow out from the discharge port 21, achieving the effect of crushing the plastic; The plastic particles that do not meet the specifications are accumulated on the top of the arc-shaped screen 401, the stepping motor 501 drives the arc-shaped screen 401 to rotate, so that the arc-shaped screen 401 rotates in the arc-shaped slot 403, and when the arc-shaped screen 401 rotates, the stirring rod 6 on the top of the arc-shaped screen 401 can gather the accumulated sheet-shaped large plastic particles to the front end or the rear end of the arc-shaped screen 401, so that when the arc-shaped screen 401 rotates into the mounting port 201, the gathered sheet-shaped large plastic particles can be sent to the rotating shaft 202, the rotating shaft 202 rotates to drive the plurality of stirring hoppers 203 installed on the outer surface to stir the plastic particles and send them back to the middle of the two crushing rollers 23 for crushing again, achieving the effect of uniformly crushing the plastic particles.

[0035] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A waste plastic decomposition device, comprising a feed bin (1) of a crushing device, a crushing bin (2) is installed at the bottom of the feed bin (1), a discharge port (21) is formed at the bottom of the crushing bin (2), characterized in that: The inner wall of the crushing bin (2) is provided with mounting plates (22) on the front and back surfaces, and the middle of the two mounting plates (22) is provided with a crushing roller (23), and the crushing roller (23) is provided with two, and the two crushing rollers (23) are rotatably installed in the interior of the crushing bin (2), and the left side of the two crushing rollers (23) is respectively provided with a rotating shaft one (24) and a rotating shaft two (25), and the rotating shaft one (24) and the rotating shaft two (25) penetrate the inner wall of the crushing bin (2) and are provided with a driving assembly (3), and the bottom of the crushing roller (23) is provided with a receiving assembly (4), and the receiving assembly (4) is used for receiving the crushed plastic particles. The bottom of the receiving assembly (4) is provided with an adjusting assembly (5), which drives the receiving assembly (4) to reciprocate left and right, and screens the received plastic particles. The bottom of the mounting plate (22) is provided with a mounting hole (201), and the inner wall of the mounting hole (201) penetrates to the outside of the side of the mounting plate (22) close to the crushing roller (23), and the inside of the mounting hole (201) is provided with a stirring assembly (26), and the adjusting assembly (5) drives the receiving assembly (4) to reciprocate left and right, which is used for screening the plastic particles, and driving the plastic which is not crushed and cannot be screened to move to the stirring assembly (26), and the stirring assembly (26) is used for driving the plastic which is not crushed and cannot be screened to enter the crushing area of the crushing roller (23) for secondary crushing.

2. The waste plastic decomposition apparatus according to claim 1, characterized by: The receiving assembly (4) comprises an arc-shaped screen (401) arranged at the bottom of the two crushing rollers (23), and the two sides of the arc-shaped screen (401) are fixedly provided with connecting rods (402), and the inner walls of the crushing bin (2) are provided with arc-shaped notches (403) on both sides.

3. The waste plastic decomposition apparatus according to claim 2, characterized by: The adjusting assembly (5) comprises a stepping motor (501) installed on the right side of the crushing bin (2), and the output shaft of the stepping motor (501) penetrates into the interior of the crushing bin (2) and is provided with a rotating gear (502), and the rotating gear (502) is arranged at the bottom of the connecting rod (402), and the bottom of the connecting rod (402) is provided with a gear slot (503), and the rotating gear (502) is connected with the gear slot (503).

4. The waste plastic decomposition apparatus according to claim 2, characterized by: The top end of the arc-shaped notch (403) extends to the inside of the mounting hole (201), and the arc-shaped screen (401) can be rotated into the inside of the mounting hole (201) through the connecting rod (402).

5. The waste plastic decomposition apparatus according to claim 2, wherein: The interior of the crushing bin (2) is fixedly provided with a stirring rod (6), and the stirring rod (6) is arranged at the top of the arc-shaped screen (401) and is used for gathering the sheet-shaped large plastic particles at the top of the arc-shaped screen (401).

6. The waste plastic decomposition apparatus according to claim 1, wherein: The stirring assembly (26) comprises a rotating shaft (202) rotatably installed in the crushing bin (2), and the outer surface of the rotating shaft (202) is fixedly installed with stirring buckets (203), a plurality of the stirring buckets (203) are arranged in a circumferential array on the outer surface of the rotating shaft (202), and the stirring buckets (203) are used for stirring the large flaky plastic particles which are not completely crushed and which are conveyed by the arc-shaped screen (401) into the crushing roller (23) for re-crushing.

7. The waste plastic decomposition apparatus according to claim 1, wherein: The driving assembly (3) comprises a gear one (301) sleeved on the outer surface of the rotating shaft one (24) and a gear two (302) sleeved on the outer surface of the rotating shaft two (25), the gear one (301) and the gear two (302) are in meshing connection, the outer portion of the rotating shaft one (24) is provided with a driving motor (303), and the driving motor (303) is used for driving the two crushing rollers (23) to rotate.

8. The waste plastic decomposition apparatus according to claim 1, wherein: The mounting ports (201) and the rotating shafts (202) are both provided with two, the two mounting ports (201) and the two rotating shafts (202) are symmetrically arranged on the two sides of the two crushing rollers (23), and the left sides of the two rotating shafts (202) are respectively provided with a connecting shaft one (7) and a connecting shaft two (71).

9. The waste plastic decomposition apparatus according to claim 8, characterized by: The outer surfaces of the connecting shaft one (7) and the connecting shaft two (71) are respectively sleeved with a track one (8) and a track two (81), one end of the track one (8) is sleeved on the outer surface of the rotating shaft one (24), and one end of the track two (81) is sleeved on the outer surface of the rotating shaft two (25).

10. The waste plastic decomposition apparatus according to claim 4, characterized by: The bottom of the arc-shaped screen (401) is provided with a sub-screen (9), and the sub-screen (9) is used for re-screening the plastic particles screened by the arc-shaped screen (401).

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