Polyethylene waste centralized processing equipment

Abstract

This invention relates to the technical field of plastic recycling, and more particularly to a centralized processing device for polyethylene waste, comprising side plates, a first connecting plate, a first hydraulic telescopic cylinder, a second connecting plate, limiting rods, an extrusion assembly, and a drive assembly; several side plates are connected to a support block; a first connecting plate is disposed above the support block; a first hydraulic telescopic cylinder is fixedly connected to the first connecting plate; the telescopic end of the first hydraulic telescopic cylinder is fixedly connected to the second connecting plate; several limiting rods are fixedly connected to the second connecting plate; under the limiting action of the limiting rods, four through holes are formed inside the film block package. After inserting a PE tube into the through holes, the heat in the film block package can diffuse to the inside of the PE tube, and then diffuse from the inside of the PE tube to the external environment, avoiding heat accumulation and spontaneous combustion. At the same time, the limiting rods are also used to fix the middle of the film block package, preventing the film block package from shifting during the opening of the side plates, thereby avoiding affecting the gripping and positioning operation of the robotic arm.

Description

Technical Field

[0001] This invention relates to the technical field of plastic recycling. More specifically, this invention relates to a centralized processing device for polyethylene waste. Background Technology

[0002] Stretch wrap film is typically made of linear low-density polyethylene (LLDPE) and is widely used in factories for packaging and securing goods due to its good stretchability, self-adhesion, and toughness. However, after unloading in logistics, a large amount of used waste stretch wrap film is collected. To recycle it, it usually needs to be compressed into high-density film blocks to reduce volume and lower transportation and disposal costs.

[0003] Under certain conditions, this high-density compression method may pose certain safety hazards. Because polyethylene has poor thermal conductivity, and the compressed film block has extremely small internal gaps and poor ventilation, if there is a localized heat source inside the block (e.g., residual grease or solvents in the film before compression, intense frictional heat during packaging, or the slow, exothermic chemical reaction of oxidizable substances), heat can easily accumulate inside the block and be difficult to dissipate. If this occurs simultaneously in a high-temperature summer environment or a poorly ventilated storage space, the accumulated heat may cause the temperature to gradually rise, potentially triggering a slow, exothermic oxidation reaction in polyethylene. In extreme cases, this could develop into smoldering or even spontaneous combustion. Summary of the Invention

[0004] To overcome the shortcomings of the extremely small internal gaps after the stretch film is compressed into blocks, resulting in poor ventilation and heat dissipation, making it difficult to dissipate the accumulated heat inside and causing spontaneous combustion, this invention provides a centralized polyethylene waste treatment device.

[0005] Technical solution: A centralized polyethylene waste treatment device includes a base and a support block fixed to the base; it also includes side plates, a first connecting plate, a first hydraulic telescopic cylinder, a second connecting plate, limiting rods, an extrusion assembly, and a drive assembly; several side plates are connected to the support block; the first connecting plate is disposed above the support block; the first hydraulic telescopic cylinder is fixed to the first connecting plate; the second connecting plate is fixed to the telescopic end of the first hydraulic telescopic cylinder; several limiting rods are fixed to the second connecting plate; the extrusion assembly is connected to the first connecting plate; the extrusion assembly is used to compress the film; the drive assembly is connected to the base; the drive assembly is used to drive the side plates to rotate.

[0006] To further explain, the extrusion assembly includes a second hydraulic telescopic cylinder and a pressure plate; several second hydraulic telescopic cylinders are fixedly connected to the first connecting plate; the telescopic ends of all second hydraulic telescopic cylinders are fixedly connected to the pressure plate.

[0007] To further explain, the drive assembly includes a connecting block 1, a hydraulic telescopic cylinder 3, and a connecting block 2; several connecting blocks 1 are fixedly connected to the base; a hydraulic telescopic cylinder 3 is rotatably connected to each connecting block 1; a connecting block 2 is rotatably connected to the telescopic end of each hydraulic telescopic cylinder 3, and the connecting block 2 is fixedly connected to the corresponding side plate; the lower part of each side plate is rotatably connected to a support block.

[0008] To further explain, it also includes round rods; several round rods are fixedly connected to the first connecting plate, and the round rods are slidably connected to the second connecting plate.

[0009] By employing the above-described structure, the present invention can compress stretch-wound film into thin film blocks.

[0010] To further explain, the outer diameter of the limit rod is set in a decreasing manner, with the outer diameter at its upper end being the largest.

[0011] By adopting the above structure, the limiting rod can be pulled out more easily.

[0012] To further explain, it also includes a vibration assembly, which includes a long tube and a pneumatic vibrator; a long tube is fixed to each limit rod; a pneumatic vibrator is installed on each limit rod, and the input end of the pneumatic vibrator is connected to the long tube.

[0013] To further explain, each limit rod has a through hole.

[0014] By adopting the above structure, the limiting rod can be pulled out more easily.

[0015] To further explain, the support block has several fixing holes, and the lower end of each limiting rod is inserted into the corresponding fixing hole.

[0016] By adopting the above structure, the present invention can improve the installation stability of the limiting rod.

[0017] To further explain, a pressure sensor is installed on the pressure plate.

[0018] To further explain, the surface of the limiting rod is set to a smooth surface; the side plate near the support block is also set to a smooth surface.

[0019] The beneficial effects are as follows: First, under the limiting action of the limiting rod, four through holes will be formed inside the film block package. After the PE tube is inserted into the through holes, the heat in the film block package can be diffused to the inside of the PE tube, and then diffused from the inside of the PE tube to the external environment, avoiding the phenomenon of heat accumulation and spontaneous combustion. At the same time, the limiting rod is also used to fix the middle of the film block package, preventing the film block package from shifting during the opening of the side plate, thereby avoiding affecting the gripping and positioning operation of the robot arm.

[0020] Second, by setting the outer diameter of the limiting rod in a decreasing manner, it is only necessary to move the limiting rod upward by 1-2 cm to clear the negative pressure adsorption force between the film block package and the limiting rod, which greatly reduces the difficulty of pulling the limiting rod out of the film block package.

[0021] Third, by using a pneumatic vibrator to drive the limiting rods to vibrate, the vacuum adsorption layer between the limiting rods and the film block package is broken, thereby greatly reducing the negative pressure adsorption force between the limiting rods and the film block package, which can reduce the difficulty of pulling the limiting rods out of the film block package.

[0022] 4. A through hole is made on the limiting rod. In the initial stage when the limiting rod is pulled out of the film block package, the outside air flows to the lower side of the limiting rod through the through hole, thereby avoiding the formation of a vacuum adsorption layer on the lower side of the limiting rod that would interfere with the movement of the limiting rod.

[0023] 5. During the extrusion process, the lower end of the limiting rod is inserted into the fixing hole, thereby fixing the lower end of the limiting rod through the support block, which greatly improves the installation stability of the limiting rod and reduces the risk of bending of the limiting rod. Attached Figure Description

[0024] Figure 1 A schematic diagram of the structure of the centralized polyethylene waste treatment equipment of the present invention is shown;

[0025] Figure 2 A cross-sectional view of the polyethylene waste centralized treatment equipment of the present invention is shown;

[0026] Figure 3 A schematic diagram of the extrusion assembly of the present invention is shown;

[0027] Figure 4 A schematic diagram of the structure of the driving component of the present invention is shown;

[0028] Figure 5 The present invention is shown. Figure 4 Enlarged view of point A in the middle;

[0029] Figure 6 A front view of the limiting rod of the present invention is shown;

[0030] Figure 7 A schematic diagram of the structure of the long tube of the present invention is shown;

[0031] Figure 8 A schematic diagram of the structure of the pneumatic vibrator of the present invention is shown.

[0032] Parts and their numbers in the diagram: 1-Base, 2-Support block, 3-Side plate, 4-Connecting plate one, 5-Hydraulic telescopic cylinder one, 6-Connecting plate two, 7-Limiting rod, 201-Hydraulic telescopic cylinder two, 202-Pressure plate, 203-Connecting block one, 204-Hydraulic telescopic cylinder three, 205-Connecting block two, 206-Round rod, 207-Long tube, 208-Pneumatic vibrator, 291-Groove, 292-Through hole, 293-Fixing hole. Detailed Implementation

[0033] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Example 1 implementation process: A centralized polyethylene waste treatment device, such as... Figures 1-4 and Figures 6-8 As shown, it includes a base 1 and a support block 2 fixedly connected to the base 1. The feature is that it also includes a side plate 3, a connecting plate 4, a hydraulic telescopic cylinder 5, a connecting plate 6, a limiting rod 7, a pressing assembly, and a driving assembly.

[0035] Multiple side plates 3 are connected to the support block 2;

[0036] The connecting plate 4 is provided above the support block 2;

[0037] The hydraulic telescopic cylinder 5 is fixedly installed on the connecting plate 4, and the telescopic end of the hydraulic telescopic cylinder 5 is fixedly connected to the connecting plate 6.

[0038] Multiple limiting rods 7 are fixedly configured on the connecting plate 6;

[0039] The extrusion assembly is connected to the connecting plate 4, which is used to apply compression to the film;

[0040] The base 1 is connected to the drive assembly, which is used to drive the side plate 3 to rotate.

[0041] The extrusion assembly includes a hydraulic telescopic cylinder 201 and a pressure plate 202; four hydraulic telescopic cylinders 201 are fixedly connected to the connecting plate 4; the telescopic ends of all the hydraulic telescopic cylinders 201 are fixedly connected to the pressure plate 202, and the film is compressed by the pressure plate 202.

[0042] The drive assembly includes a connecting block 1 203, a hydraulic telescopic cylinder 3 204, and a connecting block 2 205; four connecting blocks 1 203 are fixedly connected to the base 1, and the connecting blocks 1 203 are made of alloy material; a hydraulic telescopic cylinder 3 204 is rotatably connected to each connecting block 1 203; a connecting block 2 205 is rotatably connected to the telescopic end of each hydraulic telescopic cylinder 3 204, and the connecting block 2 205 is fixedly connected to the corresponding side plate 3, and the connecting block 2 205 is made of alloy material; the lower part of each side plate 3 is rotatably connected to the support block 2.

[0043] It also includes round rods 206; two round rods 206 are bolted to the connecting plate 4, and the round rods 206 are slidably connected to the connecting plate 6.

[0044] First, the stretch wrap film is fed into the groove 291. Then, the second hydraulic telescopic cylinder 201 drives the pressure plate 202 downward, causing it to move into the groove 291 and compress the stretch wrap film. Under the limiting action of the support block 2 and the side plate 3, the pressure plate 202 compresses the stretch wrap film into a cubic film block package. Simultaneously, under the limiting action of the limiting rod 7, four through holes are formed inside the film block package. Then, the third hydraulic telescopic cylinder 204 retracts, causing the third hydraulic telescopic cylinder 204 to drive the side plate 3 to flip to a horizontal state via the connecting block 205, exposing the four sides of the film block package. During this process, the third hydraulic telescopic cylinder... Hydraulic cylinder 204 rotates adaptively relative to connecting block 203, and hydraulic telescopic cylinder 204 rotates adaptively relative to connecting block 205. Then, pressure plate 202 keeps pressing the film block package. Hydraulic telescopic cylinder 5 drives connecting plate 6 to move upward on the round rod 206. Connecting plate 6 drives limit rod 7 to move upward, thereby pulling limit rod 7 out of the film block package. Then, the film block package is clamped from the four sides by an external robotic arm. Then, hydraulic telescopic cylinder 201 drives pressure plate 202 to move upward, so that pressure plate 202 moves away from the film block package. Then, the film block package is clamped to the material placement area by the external robotic arm. Subsequently, the package with dense permeable openings is manually placed. The PE tube with vents is inserted into the through hole of the film block to prevent the film block from rebounding and blocking the corresponding position of the through hole. The heat in the film block is conducted to the inside of the PE tube through the vent, and then diffuses from the inside of the PE tube to the external environment, avoiding heat accumulation and spontaneous combustion. The pressure during the compression process of the stretch wound film is high. After being compressed into a cubic film block, the sides of the film block will be tightly pressed against the side plate 3, resulting in a strong adsorption force between the sides of the film block and the side plate 3. This causes a lateral force to be generated on the film block during the flipping and opening of the side plate 3, which may lead to the risk of the film block shifting, thus affecting the gripping and positioning of the subsequent external robotic arm. The positioning operation is affected, but after setting the limit rod 7, the middle part of the film block package can be fixed by the limit rod 7, thereby avoiding the displacement problem and thus avoiding the impact on the gripping and positioning operation of the robot arm. In use, under the limiting action of the limit rod 7, four through holes will be formed inside the film block package. After inserting the PE tube into the through holes, the heat in the film block package can be diffused to the inside of the PE tube, and then diffused from the inside of the PE tube to the external environment, avoiding the phenomenon of heat accumulation and spontaneous combustion. At the same time, the limit rod 7 is also used to fix the middle part of the film block package, preventing the film block package from shifting during the opening of the side plate 3, thereby avoiding the impact on the gripping and positioning operation of the robot arm.

[0045] The outer diameter of the limit rod 7 is set in a decreasing manner, with the outer diameter at its upper end being the largest.

[0046] After the stretch wrap film is compressed into a film block, a strong adsorption force is generated between the film block and the limiting rod 7, making it relatively difficult to pull the limiting rod 7 out of the film block. Therefore, the outer diameter of the limiting rod 7 is set in a decreasing manner, with the outer diameter at its upper end being the largest. When pulling the limiting rod 7 out of the film block, the limiting rod 7 only needs to move upward by 1-2 cm, and all positions of the limiting rod 7 can move away from the film block, thereby instantly clearing the circumferential pressure (such as negative pressure adsorption force) between the film block and the limiting rod 7 to zero. Subsequently, when the hydraulic telescopic cylinder 201 drives the limiting rod 7 to continue moving upward, a small sliding friction is formed between the limiting rod 7 and the film block, thereby greatly reducing the difficulty of pulling the limiting rod 7 out of the film block. In use, by setting the outer diameter of the limiting rod 7 in a decreasing manner, it is only necessary to move the limiting rod 7 upward by 1-2 cm to clear the negative pressure adsorption force between the film block and the limiting rod 7, greatly reducing the difficulty of pulling the limiting rod 7 out of the film block.

[0047] It also includes a vibration assembly, which includes a long tube 207 and a pneumatic vibrator 208; a long tube 207 is fixedly connected to each limit rod 7; a pneumatic vibrator 208 is installed on each limit rod 7, and the input end of the pneumatic vibrator 208 is connected to the long tube 207, so that the limit rod 7 is driven to vibrate through the pneumatic vibrator 208.

[0048] In the initial stage of pulling the limiting rod 7 out of the film block package, a strong negative pressure adsorption force is formed between the limiting rod 7 and the film block package. Therefore, a vibration component is set on the limiting rod 7. During the preparation, an external air pump is manually connected to the long tube 207. In the initial stage of pulling the limiting rod 7 out of the film block package, air is supplied to the long tube 207 through the external air pump. The air flows into the pneumatic vibrator 208 through the long tube 207, causing the pneumatic vibrator 208 to drive the limiting rod 7 to vibrate, thereby breaking the vacuum adsorption layer between the limiting rod 7 and the film block package. This significantly reduces the negative pressure adsorption force between the limiting rod 7 and the film block package, making it easier to pull the limiting rod 7 out of the film block package.

[0049] Each limiting rod 7 has a through hole 292 for gas to flow through.

[0050] In the initial stage of pulling the limiting rod 7 out of the film block package, the lower side of the limiting rod 7 tends to move away from the support block 2, which causes a vacuum adsorption layer to form on the lower side of the limiting rod 7, interfering with the upward movement of the limiting rod 7. Therefore, a through hole 292 is opened on the limiting rod 7. In the initial stage of pulling the limiting rod 7 out of the film block package, the outside air flows to the lower side of the limiting rod 7 through the through hole 292, thereby avoiding the formation of a vacuum adsorption layer on the lower side of the limiting rod 7 that interferes with the movement of the limiting rod 7.

[0051] The implementation process of Example 2 is based on Example 1, as follows: Figure 4 and Figure 5 As shown, the support block 2 has four fixing holes 293, and the lower end of each limiting rod 7 is inserted into the corresponding fixing hole 293, thereby fixing the lower end of the limiting rod 7 through the support block 2.

[0052] A pressure sensor is installed on the pressure plate 202 to monitor the pressure value during extrusion.

[0053] The surface of the limiting rod 7 is set to a smooth surface; the side plate 3 near the support block 2 is set to a smooth surface to reduce friction.

[0054] During the extrusion stretch wrapping film process, the stretch wrapping film will exert lateral pressure on the limiting rod 7. Since only the upper end of the limiting rod 7 is fixed, the limiting rod 7 is at risk of bending. Therefore, a fixing hole 293 is opened on the support block 2. During the extrusion process, the lower end of the limiting rod 7 is inserted into the fixing hole 293, thereby fixing the lower end of the limiting rod 7 through the support block 2, which greatly improves the installation stability of the limiting rod 7 and reduces the risk of bending of the limiting rod 7.

[0055] It should be understood that the above description is for illustrative purposes only and is not intended to limit the invention. Those skilled in the art will understand that variations of the invention are included within the scope of the claims herein.

Claims

1. A polyethylene waste material centralized processing device, comprising a base (1) and a supporting block (2) fixed to the base (1); characterized in that: It also includes a side plate (3), a connecting plate one (4), a hydraulic telescopic cylinder one (5), a connecting plate two (6), a limiting rod (7), an extrusion assembly, and a drive assembly; several side plates (3) are connected to the support block (2); a connecting plate one (4) is set above the support block (2); a hydraulic telescopic cylinder one (5) is fixedly connected to the connecting plate one (4); a connecting plate two (6) is fixedly connected to the telescopic end of the hydraulic telescopic cylinder one (5); several limiting rods (7) are fixedly connected to the connecting plate two (6); an extrusion assembly is connected to the connecting plate one (4); the extrusion assembly is used to compress the film; a drive assembly is connected to the base (1); the drive assembly is used to drive the side plate (3) to rotate.

2. The polyethylene waste material centralized processing device according to claim 1, characterized in that: The extrusion assembly includes a hydraulic telescopic cylinder 2 (201) and a pressure plate (202); several hydraulic telescopic cylinders 2 (201) are fixedly connected to the connecting plate 1 (4); the telescopic ends of all hydraulic telescopic cylinders 2 (201) are fixedly connected to the pressure plate (202).

3. The polyethylene scrap concentrating device of claim 2, wherein: The drive assembly includes a connecting block 1 (203), a hydraulic telescopic cylinder 3 (204), and a connecting block 2 (205); several connecting blocks 1 (203) are fixedly connected to the base (1); a hydraulic telescopic cylinder 3 (204) is rotatably connected to each connecting block 1 (203); a connecting block 2 (205) is rotatably connected to the telescopic end of each hydraulic telescopic cylinder 3 (204), and the connecting block 2 (205) is fixedly connected to the corresponding side plate (3); the lower part of each side plate (3) is rotatably connected to the support block (2).

4. The polyethylene waste centralized treatment equipment according to claim 3, characterized in that: It also includes round rods (206); several round rods (206) are fixed on the connecting plate one (4), and the round rods (206) are slidably connected to the connecting plate two (6).

5. The polyethylene waste centralized treatment equipment according to claim 3, characterized in that: The outer diameter of the limiting rod (7) is set in a decreasing manner, and the outer diameter value of its upper end is the largest.

6. The polyethylene waste centralized treatment equipment according to claim 5, characterized in that: It also includes a vibration assembly, which includes a long tube (207) and a pneumatic vibrator (208); a long tube (207) is fixedly connected to each limit rod (7); a pneumatic vibrator (208) is installed on each limit rod (7), and the input end of the pneumatic vibrator (208) is connected to the long tube (207).

7. A centralized polyethylene waste treatment device according to claim 6, characterized in that: Each limiting rod (7) has a through hole (292).

8. The polyethylene waste centralized treatment equipment according to claim 7, characterized in that: The support block (2) has several fixing holes (293), and the lower end of each limiting rod (7) is inserted into the corresponding fixing hole (293).

9. A centralized polyethylene waste treatment device according to claim 8, characterized in that: A pressure sensor is installed on the pressure plate (202).

10. A centralized polyethylene waste treatment device according to any one of claims 1-9, characterized in that: The surface of the limiting rod (7) is set to a smooth surface; the side plate (3) near the support block (2) is set to a smooth surface.

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