MPP and CPVC reclaimed material pretreatment device

Abstract

The invention belongs to the technical field of waste recycling, and particularly discloses an MPP and CPVC recycled material pretreatment device which comprises a shell structure, a cutting roller is rotationally arranged in the shell structure, a pore plate is distributed on one side of the cutting roller, a second guide plate is distributed on the other side of the cutting roller, and a sliding plate is fixed to the end, close to the cutting roller, of the pore plate. A rubber ring is fixed to the sliding plate and the pore plate and fixed to the inner wall of the shell structure, a pushing piece slides on the pore plate, and a first guide plate is fixed to the lower portion of the inner wall of the shell structure. A ball in the device slides on a sliding strip, at the moment, the ball drives an inserting column to compress a connecting spring, when the ball enters a notch, the connecting spring drives the ball on the inserting column to impact a pore plate under the action of the restoring force of the connecting spring, and then a sliding plate slides on a first guide plate; and meanwhile, vibration of dust on the pore plate is achieved, and dust on the waste electric power pipe can conveniently fall into the shell structure.

Description

Technical Field

[0001] This invention belongs to the field of waste recycling technology, and specifically discloses a pretreatment device for MPP and CPVC recycled materials. Background Technology

[0002] During the pretreatment of MPP and CPVC power pipes, a single-shaft pipe shredder is required. The single-shaft pipe shredder can shred waste MPP and CPVC power pipes into small recyclable materials, which makes it easier for workers to recycle MPP and CPVC power pipes.

[0003] Currently, single-shaft pipe shredders suitable for MPP and CPVC power pipes on the market typically include shredding rollers and a collection chamber. In actual use, workers place waste MPP and CPVC power pipes into the collection chamber, and then use the shredding rollers to shred the MPP and CPVC power pipes inside the collection chamber, thereby processing the waste MPP and CPVC power pipes into fine granular recyclable materials.

[0004] However, while the aforementioned single-shaft pipe shredder does achieve good pretreatment of waste MPP and CPVC power pipes in actual use, it lacks a proper dust screening structure. When the waste MPP and CPVC power pipes are shredded by the shredding rollers, the dust on them enters the storage structure along with the recycled granules, hindering subsequent processing. Furthermore, the dust on the power pipes also floats into the air during shredding, polluting the recycling workshop environment and affecting the health of the workers. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a pretreatment device for MPP and CPVC recycled materials to solve the problems mentioned above.

[0006] To achieve the above objectives, the present invention provides a pretreatment device for MPP and CPVC recycled materials, including a shell structure. A cutting roller rotates inside the shell structure. A perforated plate is distributed on one side of the cutting roller, and a second guide plate is distributed on the other side of the cutting roller. A sliding plate is fixed to one end of the perforated plate near the cutting roller. A rubber ring is fixed to the sliding plate and the perforated plate. The rubber ring is fixed to the inner wall of the shell structure. A pushing plate slides on the perforated plate.

[0007] A first guide plate is fixed to the lower part of the inner wall of the shell structure, and a second guide plate is fixed to the side of the first guide plate away from the cutting roller. At the same time, the upper part of the first guide plate and the sliding plate are in sliding cooperation.

[0008] The inner wall of the housing structure is fixed with a sliding strip, and the sliding strip has a notch near the cutting roller. The pushing plate has a pressing structure near the sliding strip.

[0009] In the above technical solution, the sliding bar abuts against the perforated plate, the upper edge of the inner wall of the notch is chamfered, and the pushing piece and the sliding bar abut against each other.

[0010] In the above technical solution, a dividing plate is fixed to the upper part of the pushing plate, and a telescopic rod and a hydraulic cylinder are distributed on the side of the pushing plate away from the cutting roller. The fixed ends of the telescopic rod and the hydraulic cylinder are fixed to the housing structure, and the output ends of the telescopic rod and the hydraulic cylinder are fixed to the pushing plate.

[0011] In the above technical solution, further, an installation strip is fixed to the inner wall of the shell structure, a rectangular groove is opened inside the installation strip, a slider slides inside the rectangular groove, the lower end of the slider is fixed to the dividing plate, a telescopic tube is fixed to one side of the slider, the telescopic tube is embedded inside the rectangular groove, an air inlet valve and an air outlet valve are fixed on the telescopic tube, and the air inlet end of the air inlet valve penetrates the shell structure.

[0012] In the above technical solution, further, an air pipe is fixed on the exhaust valve, the second guide plate has a hollow structure, the exhaust end of the air pipe is connected to the inner cavity of the second guide plate, and the exhaust end of the second guide plate faces the cutting roller.

[0013] In the above technical solution, a limiting piece is further fixed on the side of the sliding plate near the cutting roller. The limiting piece is an inclined plate fixed on the sliding plate, and the lower part of the sliding plate abuts against the first guide plate.

[0014] In the above technical solution, a fan is further fixed on the side of the housing structure away from the cutting roller, the receiving end of the fan is connected to the inner cavity of the housing structure, and a filter is embedded in the part where the receiving end of the fan is connected to the housing structure.

[0015] In the above technical solution, a collecting hopper is further fixed on the upper part of the shell structure. The collecting hopper has a bucket-shaped structure, and the discharge end of the collecting hopper is connected to the inner cavity of the shell structure.

[0016] In the above technical solution, the pressing structure further includes a rod cylinder fixed on the pushing plate, a plug-in post inserted into the rod cylinder, a connecting spring fixed between the plug-in post and the rod cylinder, and a ball bearing embedded at the lower end of the plug-in post.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The collection hopper in this device guides the waste MPP and CPVC power pipes onto the perforated plate. Then, the hydraulic cylinder, in conjunction with the telescopic rod, drives the pusher plate to push the waste MPP and CPVC power pipes, thereby bringing them into contact with the cutting roller. The cutting roller then shreds the waste MPP and CPVC power pipes into small recyclable materials.

[0019] 2. The perforated plate and sliding plate in this device are connected with rubber rings. The rubber rings on the perforated plate and sliding plate are connected to the inner wall of the shell structure. When the push plate drives the waste power pipe to abut against the cutting roller, the output shaft of the external motor drives the cutting roller to rotate. The cutting roller can shred the waste power pipe into smaller recyclable materials. During this process, the vibration generated by the waste power pipe will knock the perforated plate, thereby causing the dust on the perforated plate to fall onto the second guide plate, thus allowing the dust on the waste power pipe to be discharged from the inside of the shell structure.

[0020] 3. When the output end of the telescopic rod and hydraulic cylinder in the device drives the push plate to slide forward on the perforated plate, the dividing plate will squeeze the telescopic tube through the slider. At this time, the air inside the telescopic tube will blow away the recycled material adhering to the cutting roller, thereby realizing the rapid separation of the recycled material and the cutting roller, and preventing the cutting roller from carrying the recycled material into the collection hopper.

[0021] 4. The ball bearings in the device slide on the sliding bar. At this time, the ball bearings will drive the plug-in pin to compress the connecting spring. When the ball bearings enter the inside of the notch, the connecting spring will drive the ball bearings on the plug-in pin to impact the perforated plate under the action of its own restoring force, thereby realizing the sliding plate sliding on the first guide plate. At the same time, it realizes the dust vibration on the perforated plate, which makes it easier for the dust on the waste power pipe to fall into the inside of the shell structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 for Figure 1 Cross-sectional structural diagram;

[0024] Figure 3 This is a diagram showing the connection structure between the push plate and the perforated plate in this invention;

[0025] Figure 4 This is a diagram showing the connection structure between the sliding bar and the perforated plate in this invention;

[0026] Figure 5 This is a diagram showing the connection structure between the push plate and the dividing plate in this invention;

[0027] Figure 6 for Figure 2 Enlarged view of A in the middle;

[0028] Figure 7 This is a through-hole structure diagram of the insertion post and the rod tube in this invention;

[0029] Figure 8 This is a diagram showing the connection structure between the telescopic tube and the mounting strip in this invention.

[0030] 1. Collection hopper; 2. Shell structure; 21. Second guide plate; 22. Cutting roller; 23. First guide plate; 3. Air pipe; 4. Fan; 5. Perforated plate; 51. Sliding plate; 52. Rubber ring; 53. Sliding strip; 54. Notch; 55. Limiting plate; 6. Dividing plate; 61. Mounting strip; 611. Telescopic tube; 612. Rectangular groove; 613. Air inlet valve; 614. Slider; 615. Exhaust valve; 62. Telescopic rod; 63. Hydraulic cylinder; 64. Push plate; 65. Insertion post; 66. Rod cylinder; 67. Connecting spring; 68. Ball bearing. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0033] Example 1: Please refer to Figures 1-8 As shown, the present invention provides a technical solution:

[0034] This invention is a pretreatment device for MPP and CPVC recycled materials, including a shell structure 2, a cutting roller 22 rotating inside the shell structure 2, an external motor connected to the shell structure 2, the output shaft of the external motor connected to the cutting roller 22, a perforated plate 5 distributed on one side of the cutting roller 22, a second guide plate 21 distributed on the other side of the cutting roller 22, a sliding plate 51 fixed at one end of the perforated plate 5 near the cutting roller 22, a rubber ring 52 fixed on the sliding plate 51 and the perforated plate 5, the rubber ring 52 being fixed to the inner wall of the shell structure 2, and a pushing piece 64 sliding on the perforated plate 5;

[0035] In actual use, the collection bucket 1 guides the waste MPP power pipes and CPVC power pipes to be placed on the perforated plate 5. Then, the hydraulic cylinder 63, together with the telescopic rod 62, drives the pusher plate 64 to push the waste MPP power pipes and CPVC power pipes, so that the waste MPP power pipes and CPVC power pipes can contact the cutting roller 22, so that the cutting roller 22 can shred the waste MPP power pipes and CPVC power pipes into small recyclable materials.

[0036] A first guide plate 23 is fixed to the lower part of the inner wall of the shell structure 2. A second guide plate 21 is fixed to the side of the first guide plate 23 away from the cutting roller 22. A discharge port is opened on the shell structure 2 near the lower end of the first guide plate 23 and the second guide plate 21. At the same time, the upper part of the first guide plate 23 and the sliding plate 51 are slidably engaged.

[0037] The first guide plate 23 can divide the inner cavity of the shell structure 2 into two cavities. The cavity on the side closer to the cutting roller 22 is used to collect the recycled material of shredded MPP power pipes and CPVC power pipes, and the cavity on the side away from the cutting roller 22 is used to collect the dust from the screening of waste power pipes.

[0038] When the cutting roller 22 shreds the waste power pipe, the first guide plate 23 can transport the recycled material to the outside through the discharge port. When the perforated plate 5 screens the dust on the waste power pipe, the dust separated from the waste power pipe will be discharged under the guidance of the second guide plate 21.

[0039] A sliding strip 53 is fixed to the inner wall of the housing structure 2. A notch 54 is provided on the part of the sliding strip 53 near the cutting roller 22. A pressing structure is provided on the part of the pushing plate 64 near the sliding strip 53.

[0040] The sliding bar 53 abuts against the perforated plate 5, and the upper edge of the inner wall of the notch 54 is chamfered, so that the push plate 64 and the sliding bar 53 abut against each other.

[0041] In actual use, rubber rings 52 are connected to the perforated plate 5 and the sliding plate 51. The rubber rings 52 on the perforated plate 5 and the sliding plate 51 are connected to the inner wall of the housing structure 2. When the push plate 64 drives the waste power pipe to abut against the cutting roller 22, the output shaft of the external motor drives the cutting roller 22 to rotate. The cutting roller 22 can shred the waste power pipe into smaller recyclable materials. During this process, the vibration generated by the waste power pipe will knock on the perforated plate 5, thereby causing the dust on the perforated plate 5 to fall onto the second guide plate 21.

[0042] Example 2: Please refer to Figures 1-8 As shown, based on Embodiment 1, the present invention provides a technical solution. Unlike Embodiment 1, in this embodiment, when the output ends of the telescopic rod 62 and the hydraulic cylinder 63 drive the push plate 64 to slide forward on the perforated plate 5, the dividing plate 6 will squeeze the telescopic tube 611 through the slider 614. At this time, the air inside the telescopic tube 611 will blow away the recycled material adhering to the cutting roller 22, thereby realizing the rapid separation of the recycled material and the cutting roller 22, and preventing the cutting roller 22 from carrying the recycled material into the collection hopper 1.

[0043] A dividing plate 6 is fixed on the upper part of the push plate 64. A telescopic rod 62 and a hydraulic cylinder 63 are distributed on the side of the push plate 64 away from the cutting roller 22. The fixed ends of the telescopic rod 62 and the hydraulic cylinder 63 are fixed on the housing structure 2, and the output ends of the telescopic rod 62 and the hydraulic cylinder 63 are fixed to the push plate 64.

[0044] When the output ends of the telescopic rod 62 and the hydraulic cylinder 63 drive the push plate 64 to slide on the perforated plate 5, the push plate 64 will drive the waste power pipe to be conveyed to the cutting roller 22, which will facilitate the cutting roller 22 to shred the waste power pipe.

[0045] An installation strip 61 is fixed to the inner wall of the shell structure 2. A rectangular groove 612 is opened inside the installation strip 61. A slider 614 slides inside the rectangular groove 612. The lower end of the slider 614 is fixed to the dividing plate 6. A telescopic tube 611 is fixed to one side of the slider 614. The telescopic tube 611 is embedded inside the rectangular groove 612. An air inlet valve 613 and an air outlet valve 615 are fixed on the telescopic tube 611. The air inlet end of the air inlet valve 613 passes through the shell structure 2.

[0046] An air pipe 3 is fixed on the exhaust valve 615. The second guide plate 21 has a hollow structure. The exhaust end of the air pipe 3 is connected to the inner cavity of the second guide plate 21. The exhaust end of the second guide plate 21 faces the cutting roller 22.

[0047] When the output ends of the telescopic rod 62 and the hydraulic cylinder 63 drive the push plate 64 to slide forward on the perforated plate 5, the position of the dividing plate 6 will also change. During this process, the dividing plate 6 will squeeze the telescopic tube 611 through the slider 614. At this time, the air inside the telescopic tube 611 will enter the interior of the second guide plate 21 through the air pipe 3, so that the air inside the telescopic tube 611 blows the recycled material adhering to the cutting roller 22, thereby realizing the rapid separation of the recycled material and the cutting roller 22, and preventing the cutting roller 22 from carrying the recycled material into the interior of the collection hopper 1.

[0048] When the output ends of the telescopic rod 62 and the hydraulic cylinder 63 drive the push plate 64 to slide in the opposite direction on the orifice plate 5, the dividing plate 6 will drive the telescopic tube 611 to stretch through the slider 614. At this time, external air will enter the interior of the telescopic tube 611 through the air inlet valve 613, which will facilitate the subsequent transmission of air inside the telescopic tube 611 to the interior of the air pipe 3. It should be noted that the air inlet valve 613 and the exhaust valve 615 are both one-way valves that can be purchased on the market.

[0049] Example 3: Please refer to Figures 1-8As shown, based on Embodiment 1, the present invention provides a technical solution. Unlike Embodiment 1, in this embodiment, the ball 68 slides on the sliding bar 53. At this time, the ball 68 will drive the plug post 65 to compress the connecting spring 67. When the ball 68 enters the interior of the notch 54, the connecting spring 67 will, under the action of its own restoring force, drive the ball 68 on the plug post 65 to impact the perforated plate 5, thereby realizing the sliding plate 51 sliding on the first guide plate 23, and at the same time realizing the dust vibration on the perforated plate 5, so that the dust on the waste power pipe can fall into the interior of the housing structure 2.

[0050] A limiting piece 55 is fixed on the side of the sliding plate 51 near the cutting roller 22. The limiting piece 55 is an inclined plate fixed on the sliding plate 51. The lower part of the sliding plate 51 abuts against the first guide plate 23.

[0051] A fan 4 is fixed on the side of the housing structure 2 away from the cutting roller 22. The receiving end of the fan 4 is connected to the inner cavity of the housing structure 2. A filter is embedded in the part where the receiving end of the fan 4 is connected to the housing structure 2.

[0052] A collection hopper 1 is fixed to the upper part of the shell structure 2. The collection hopper 1 has a bucket-shaped structure, and the discharge end of the collection hopper 1 is connected to the inner cavity of the shell structure 2.

[0053] When the collection hopper 1 carries the waste power pipe to the perforated plate 5, the dust screened by the perforated plate 5 will enter the interior of the shell structure 2. At this time, the fan 4 works intermittently. When the fan 4 works, the fan 4 will drive the air inside the shell structure 2 to be exhausted to the outside. The interior of the shell structure 2 is in a negative pressure state, which can prevent the dust inside the shell structure 2 from entering the interior of the collection hopper 1.

[0054] When the fan 4 is not working, the dust adhering to the filter will be discharged downwards under the action of gravity. This can prevent a lot of dust from adhering to the filter and prevent the collection port of the fan 4 from being easily blocked.

[0055] The pressing structure includes a rod cylinder 66 fixed on the push plate 64, a plug pin 65 inserted into the rod cylinder 66, a connecting spring 67 fixed between the plug pin 65 and the rod cylinder 66, and a ball bearing 68 embedded at the lower end of the plug pin 65.

[0056] When in normal use, the ball 68 slides on the sliding bar 53. At this time, the ball 68 will drive the plug 65 to compress the connecting spring 67. When the ball 68 enters the interior of the notch 54, the connecting spring 67 will drive the ball 68 on the plug 65 to impact the orifice plate 5 under its own restoring force, thereby realizing the sliding plate 51 sliding on the first guide plate 23. At the same time, it realizes the dust vibration on the orifice plate 5, which makes it easier for the dust on the waste power pipe to fall into the interior of the housing structure 2.

[0057] The inner wall of the notch 54 has a chamfered edge. When the output end of the telescopic rod 62 and the hydraulic cylinder 63 drives the push plate 64 to slide in the opposite direction on the orifice plate 5, the ball 68 will roll out through the chamfer of the inner wall of the notch 54, so that the ball 68 can continue to slide on the sliding bar 53.

[0058] Working principle: In actual use, the collection hopper 1 guides the waste MPP power pipes and CPVC power pipes to be placed on the perforated plate 5. Then, the hydraulic cylinder 63, together with the telescopic rod 62, drives the push plate 64 to push the waste MPP power pipes and CPVC power pipes, so that the waste MPP power pipes and CPVC power pipes can contact the cutting roller 22, so that the cutting roller 22 shreds the waste MPP power pipes and CPVC power pipes into small recyclable materials.

[0059] The first guide plate 23 can divide the inner cavity of the shell structure 2 into two cavities. The cavity on the side closer to the cutting roller 22 is used to collect the recycled material of shredded MPP power pipes and CPVC power pipes, and the cavity on the side away from the cutting roller 22 is used to collect the dust from the screening of waste power pipes.

[0060] When the cutting roller 22 shreds the waste power pipe, the first guide plate 23 can transport the recycled material to the outside through the discharge port. When the perforated plate 5 screens the dust on the waste power pipe, the dust separated from the waste power pipe will be discharged under the guidance of the second guide plate 21.

[0061] In actual use, the perforated plate 5 and the sliding plate 51 are connected to the rubber ring 52, which is made of flexible material. The rubber ring 52 on the perforated plate 5 and the sliding plate 51 is connected to the inner wall of the shell structure 2. When the push plate 64 drives the waste power pipe to abut against the cutting roller 22, the output shaft of the external motor drives the cutting roller 22 to rotate. The cutting roller 22 can shred the waste power pipe into smaller recyclable materials. During this process, the vibration generated by the waste power pipe will knock the perforated plate 5, thereby causing the dust on the perforated plate 5 to fall onto the second guide plate 21.

[0062] When the output ends of the telescopic rod 62 and the hydraulic cylinder 63 drive the push plate 64 to slide on the perforated plate 5, the push plate 64 will drive the waste power pipe to be conveyed to the cutting roller 22, which will facilitate the cutting roller 22 to shred the waste power pipe.

[0063] When the output ends of the telescopic rod 62 and the hydraulic cylinder 63 drive the push plate 64 to slide forward on the perforated plate 5, the position of the dividing plate 6 will also change. During this process, the dividing plate 6 will squeeze the telescopic tube 611 through the slider 614. At this time, the air inside the telescopic tube 611 will enter the interior of the second guide plate 21 through the air pipe 3, so that the air inside the telescopic tube 611 blows the recycled material adhering to the cutting roller 22, thereby realizing the rapid separation of the recycled material and the cutting roller 22, and preventing the cutting roller 22 from carrying the recycled material into the interior of the collection hopper 1.

[0064] When the output ends of the telescopic rod 62 and the hydraulic cylinder 63 drive the push plate 64 to slide in the opposite direction on the orifice plate 5, the dividing plate 6 will drive the telescopic tube 611 to stretch through the slider 614. At this time, external air will enter the interior of the telescopic tube 611 through the air inlet valve 613, which will facilitate the subsequent transmission of air inside the telescopic tube 611 to the interior of the air pipe 3. It should be noted that the air inlet valve 613 and the exhaust valve 615 are both one-way valves that can be purchased on the market.

[0065] When the collection hopper 1 carries the waste power pipe to the perforated plate 5, the dust screened by the perforated plate 5 will enter the interior of the shell structure 2. At this time, the fan 4 works intermittently. When the fan 4 works, the fan 4 will drive the air inside the shell structure 2 to be exhausted to the outside. The interior of the shell structure 2 is in a negative pressure state, which can prevent the dust inside the shell structure 2 from entering the interior of the collection hopper 1.

[0066] When the fan 4 is not working, the dust adhering to the filter will be discharged downwards under the action of gravity, which can prevent a lot of dust from adhering to the filter and prevent the collection port of the fan 4 from being easily blocked.

[0067] When in normal use, the ball 68 slides on the sliding bar 53. At this time, the ball 68 will drive the plug 65 to compress the connecting spring 67. When the ball 68 enters the interior of the notch 54, the connecting spring 67 will drive the ball 68 on the plug 65 to impact the orifice plate 5 under its own restoring force, thereby realizing the sliding plate 51 sliding on the first guide plate 23. At the same time, it realizes the dust vibration on the orifice plate 5, which makes it easier for the dust on the waste power pipe to fall into the interior of the housing structure 2.

[0068] The inner wall of the notch 54 has a chamfered edge. When the output end of the telescopic rod 62 and the hydraulic cylinder 63 drives the push plate 64 to slide in the opposite direction on the perforated plate 5, the ball 68 will roll out through the chamfer of the inner wall of the notch 54, so that the ball 68 can continue to slide on the sliding bar 53.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A pretreatment device for MPP and CPVC recycled materials, comprising a shell structure (2), characterized in that: The shell structure (2) has a cutting roller (22) rotating inside. A perforated plate (5) is distributed on one side of the cutting roller (22), and a second guide plate (21) is distributed on the other side of the cutting roller (22). A sliding plate (51) is fixed at one end of the perforated plate (5) near the cutting roller (22). A rubber ring (52) is fixed on the sliding plate (51) and the perforated plate (5). The rubber ring (52) is fixed to the inner wall of the shell structure (2). A pusher plate (64) slides on the perforated plate (5). The lower part of the inner wall of the shell structure (2) is fixed with a first guide plate (23), and a second guide plate (21) is fixed on the side of the first guide plate (23) away from the cutting roller (22). At the same time, the upper part of the first guide plate (23) and the sliding plate (51) are in sliding cooperation. The inner wall of the housing structure (2) is fixed with a sliding strip (53), and the sliding strip (53) has a notch (54) near the cutting roller (22). The pusher plate (64) is provided with a pressing structure near the sliding strip (53).

2. The MPP and CPVC recycled material pretreatment device according to claim 1, characterized in that, The sliding bar (53) abuts against the perforated plate (5), and the upper edge of the inner wall of the notch (54) is chamfered. The push plate (64) and the sliding bar (53) abut against each other.

3. The MPP and CPVC recycled material pretreatment device according to claim 1, characterized in that, A dividing plate (6) is fixed on the upper part of the push plate (64). A telescopic rod (62) and a hydraulic cylinder (63) are distributed on the side of the push plate (64) away from the cutting roller (22). The fixed ends of the telescopic rod (62) and the hydraulic cylinder (63) are fixed on the housing structure (2). The output ends of the telescopic rod (62) and the hydraulic cylinder (63) are fixed to the push plate (64).

4. The MPP and CPVC recycled material pretreatment device according to claim 1, characterized in that, The inner wall of the shell structure (2) is fixed with an installation strip (61). The inside of the installation strip (61) is provided with a rectangular groove (612). A slider (614) slides inside the rectangular groove (612). The lower end of the slider (614) is fixed to the dividing plate (6). A telescopic tube (611) is fixed on one side of the slider (614). The telescopic tube (611) is embedded inside the rectangular groove (612). An air inlet valve (613) and an exhaust valve (615) are fixed on the telescopic tube (611). The air inlet end of the air inlet valve (613) penetrates the shell structure (2).

5. The MPP and CPVC recycled material pretreatment device according to claim 4, characterized in that, An air pipe (3) is fixed on the exhaust valve (615). The second guide plate (21) has a hollow structure. The exhaust end of the air pipe (3) is connected to the inner cavity of the second guide plate (21). The exhaust end of the second guide plate (21) faces the cutting roller (22).

6. The MPP and CPVC recycled material pretreatment device according to claim 1, characterized in that, A limiting piece (55) is fixed on the side of the sliding plate (51) near the cutting roller (22). The limiting piece (55) is an inclined plate fixed on the sliding plate (51). The lower part of the sliding plate (51) abuts against the first guide plate (23).

7. The MPP and CPVC recycled material pretreatment device according to claim 1, characterized in that, A fan (4) is fixed on the side of the housing structure (2) away from the cutting roller (22). The receiving end of the fan (4) is connected to the inner cavity of the housing structure (2). A filter is embedded in the part where the receiving end of the fan (4) is connected to the housing structure (2).

8. The MPP and CPVC recycled material pretreatment device according to claim 1, characterized in that, The upper part of the shell structure (2) is fixed with a collection hopper (1), which is a bucket-shaped structure. The discharge end of the collection hopper (1) is connected to the inner cavity of the shell structure (2).

9. The MPP and CPVC recycled material pretreatment device according to claim 1, characterized in that, The pressing structure includes a rod cylinder (66) fixed on a push plate (64), a plug pin (65) inserted into the rod cylinder (66), a connecting spring (67) fixed between the plug pin (65) and the rod cylinder (66), and a ball bearing (68) embedded at the lower end of the plug pin (65).

Images