Waste recycling equipment

Abstract

This utility model provides a waste recycling device, belonging to the technical field of plastic production equipment. It includes a recycling structure, a waste conveyor belt, and a guiding structure. The recycling structure comprises a recycling cylinder and a conveying structure. The recycling cylinder is connected to the frame of a calender. An inlet is located at the upper end of the recycling cylinder, below the pressure roller. An outlet is located at either end of the recycling cylinder. The conveying structure is located within the inner cavity of the recycling cylinder and receives waste material entering through the inlet, carrying it to the outlet. The waste conveyor belt is located below the recycling structure and transports the waste material to a recycling container. The guiding structure is installed at the lower end of the recycling cylinder, with its upper end connected to the outlet and its lower end extending above the waste conveyor belt. This waste recycling device improves recycling efficiency while preventing waste from falling to the ground and causing pollution.

Description

Technical Field

[0001] This utility model belongs to the technical field of plastic production equipment, and more specifically, it relates to a waste recycling device. Background Technology

[0002] Currently, most plastic films are produced using calendering processes. During the operation of the calender, a large amount of waste material, such as scraps and offcuts, is generated on the pressure rollers. This waste material falls off as the pressure rollers rotate, and it can be recycled.

[0003] In conventional production workshops, waste materials are typically allowed to fall to the ground and then collected for recycling. However, waste materials falling to the ground become contaminated with dust, leading to increased impurities in the raw materials during recycling and affecting product quality. Utility Model Content

[0004] The purpose of this utility model is to provide a waste recycling device, which aims to recycle waste and prevent waste from being polluted.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a waste recycling device, comprising: The recycling structure includes a recycling cylinder and a conveying structure. The recycling cylinder is connected to the frame of the calender. The upper end of the recycling cylinder has an inlet located below the pressure roller. The recycling cylinder has an outlet at either end. The conveying structure is located inside the recycling cylinder and is used to receive waste material entering from the inlet and carry it to the outlet. A waste conveyor belt is located below the recycling structure, and the waste conveyor belt is used to transport the waste to the recycling container; A material guiding structure is installed at the lower end of the recycling cylinder, the upper end of the material guiding structure is connected to the discharge port, and the lower end of the material guiding structure extends above the waste conveyor belt.

[0006] In another embodiment of this application, the recycling cylinder is horizontally arranged, and the discharge port of the recycling cylinder is located on the lower end surface of the recycling cylinder.

[0007] In another embodiment of this application, the conveying structure is an auger structure, and the conveying structure is coaxially arranged with the recovery cylinder.

[0008] In another embodiment of this application, the recycling cylinder includes a feeding section, the upper end of which is open to form the feeding port.

[0009] In another embodiment of this application, the central angle corresponding to the longitudinal section of the feed section is 180°.

[0010] In another embodiment of this application, the length of the feed inlet is greater than the working section length of the pressure roller.

[0011] In another embodiment of this application, the length of the feed inlet is less than the working section length of the pressure roller; an end waste chute is also provided on one side of the recycling structure, the end waste chute is located on the side of the recycling cylinder away from the discharge port, the upper end of the end waste chute extends to the bottom of the pressure roller, and the lower end of the end waste chute extends to the top of the waste conveyor belt.

[0012] In another embodiment of this application, the waste conveyor belt is located in front of the recycling cylinder, and the material guiding structure is inclined in the front-back direction.

[0013] In another embodiment of this application, the material guiding structure includes a first material guiding section and a second material guiding section; the inclination angle of the first material guiding section with respect to the horizontal direction is greater than the inclination angle of the second material guiding section with respect to the horizontal direction.

[0014] In another embodiment of this application, the material guiding structure is a U-shaped plate structure with the open end of the material guiding structure facing upward.

[0015] The beneficial effects of the waste recycling equipment provided by this utility model are as follows: Compared with the prior art, in the waste recycling equipment of this utility model, the inlet of the recycling cylinder is precisely aligned with the pressure roller, preventing waste from falling to the ground and being contaminated by dust; the conveying structure inside the recycling cylinder can collect and transfer the waste inside the recycling cylinder in an orderly manner, so that all waste is discharged through the outlet, improving recycling efficiency; the guiding structure is located below the outlet of the recycling cylinder, which can accurately guide the waste collected by the recycling cylinder onto the waste conveyor belt, preventing waste from scattering on the ground; the entire equipment has a smooth and continuous workflow, which improves waste recycling efficiency while preventing waste from falling to the ground and being contaminated. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the waste recycling equipment provided in the first embodiment of the present utility model; Figure 2 A longitudinal cross-sectional view of the waste recycling equipment provided in the first embodiment of this utility model; Figure 3 For along Figure 2Sectional view of line AA in the middle; Figure 4 A schematic diagram of the structure of the waste recycling equipment provided in the second embodiment of this utility model.

[0018] In the diagram: 1. Frame; 2. Pressure roller; 3. Recycling cylinder; 4. Screw structure; 5. Feed inlet; 6. Guide pipe; 7. Drive motor; 8. Guide structure; 9. Waste conveyor belt; 10. Extension plate; 11. Baffle plate; 12. End waste chute. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Please see Figures 1 to 4 The waste recycling equipment provided by this utility model will now be described. The waste recycling equipment includes a recycling structure, a waste conveyor belt 9, and a guiding structure 8. The recycling structure includes a recycling cylinder 3 and a conveying structure. The recycling cylinder 3 is connected to the frame 1 of the calender. The upper end of the recycling cylinder 3 has an inlet 5, which is located below the pressure roller 2. An outlet is provided at either end of the recycling cylinder 3. The conveying structure is located in the inner cavity of the recycling cylinder 3. The conveying structure is used to receive the waste entering from the inlet 5 and carry it to the outlet. The waste conveyor belt 9 is located below the recycling structure and is used to transport the waste to the recycling container. The guiding structure 8 is installed at the lower end of the recycling cylinder 3. The upper end of the guiding structure 8 is connected to the outlet, and the lower end of the guiding structure 8 extends above the waste conveyor belt 9.

[0021] In the operation of the waste recycling equipment provided by this utility model, when the calender is in production, the waste generated by the pressure roller 2 will fall naturally. Because the inlet 5 of the recycling cylinder 3 is located directly below the pressure roller 2, the waste accurately enters the inner cavity of the recycling cylinder 3 through the inlet 5. The waste entering the inner cavity of the recycling cylinder 3 will fall onto the conveying structure. The conveying structure, through its own transmission action, will transport the received waste towards the outlet of the recycling cylinder 3. When the waste moves to the end of the conveying structure, it will fall from the end of the conveying structure and fall into the guide structure 8 through the outlet. The waste will then move downwards along the guide structure 8 until it falls onto the waste conveyor belt 9 from the lower end of the guide structure 8. The waste conveyor belt 9 will transport the waste to the recycling container, completing the waste recycling operation. Figure 3 The image only shows the relative positions of the pressure roller 2 and the recovery cylinder 3, without showing other structures of the calender.

[0022] Compared with the prior art, the waste recycling equipment provided by this utility model has an inlet 5 of the recycling cylinder 3 that is precisely aligned with the pressure roller 2, preventing waste from falling to the ground and being contaminated by dust. The conveying structure inside the recycling cylinder 3 can collect and transfer the waste in the recycling cylinder 3 in an orderly manner, so that all waste is discharged through the outlet, improving recycling efficiency. The guiding structure 8 is located below the outlet of the recycling cylinder 3, which can accurately guide the waste collected by the recycling cylinder 3 onto the waste conveyor belt 9, preventing waste from scattering on the ground. The entire equipment has a smooth and continuous workflow, which improves waste recycling efficiency while preventing waste from falling to the ground and being contaminated.

[0023] In some possible embodiments, please refer to Figure 1 The recycling cylinder 3 is set horizontally, and the discharge port of the recycling cylinder 3 is located on the lower end face of the recycling cylinder 3.

[0024] The recycling cylinder 3 is in a horizontal position, and its longitudinal cross-section is circular or rectangular. The conveying structure is installed on the inner wall of the recycling cylinder 3. The length of the conveying structure is less than the length of the inner cavity of the recycling cylinder 3, that is, the tail end of the conveying structure is located above the discharge port of the recycling cylinder 3 to prevent its end from blocking the discharge port.

[0025] Specifically, when the longitudinal section of the recycling cylinder 3 is circular, the axial direction of the recycling cylinder 3 is located in the horizontal plane, and the end of the recycling cylinder 3 can be mounted on the frame 1. The conveying structure inside the recycling cylinder 3 is installed on or below the central axis of the recycling cylinder 3. The inlet 5 and outlet 5 of the recycling cylinder 3 are both opened on the annular side wall of the recycling cylinder 3, but they are located on opposite sides of the conveying structure. In this case, the conveying structure can be a screw conveyor, a conveyor belt, or a chain conveyor, etc.

[0026] When the longitudinal section of the recycling cylinder 3 is rectangular, the length direction of the recycling cylinder 3 lies in the horizontal plane. The top plate of the recycling cylinder 3 has an inlet 5, and the bottom plate has an outlet. A conveying structure is located at the bottom of the recycling cylinder 3 to increase the waste capacity above the conveying structure. In this case, the conveying structure can be a conveyor belt, a chain conveyor, etc.

[0027] like Figure 1 As shown, the longitudinal section of the recycling cylinder 3 is circular, and the conveying structure installed inside it is an auger structure 4. The auger structure 4 includes a central shaft and spiral blades. One end of the central shaft is rotatably connected to the end plate of the recycling cylinder 3, and the other end of the central shaft passes through the end plate at the other end of the recycling cylinder 3 and is rotatably mounted. The end of the central shaft extending out of the recycling cylinder 3 is connected to a drive motor 7. The drive motor 7 drives the central shaft to rotate, which in turn drives the spiral blades to rotate, causing the spiral blades to move the waste material in the inner cavity of the recycling cylinder 3 toward the discharge port.

[0028] In some possible embodiments, please refer to Figure 1 The recovery cylinder 3 adopts a cylindrical structure with a circular longitudinal cross-section. The recovery cylinder 3 includes a first installation section, a feeding section, and a second installation section connected in sequence. Both the first and second installation sections have circular longitudinal cross-sections, while the feeding section has an arc-shaped longitudinal cross-section. The upper end of the feeding section is open, forming a feeding port 5. A discharge port is provided on either the first or second installation section.

[0029] Optionally, the central angle corresponding to the longitudinal section of the feeding section is 180°. That is, the upper edge of the feeding section is on the same horizontal plane as the central axis of the recycling cylinder 3. At this time, the width of the feeding port 5 is at its maximum, which can achieve maximum coverage of the waste falling range on the pressure roller 2 and prevent the waste from being thrown out to the outside of the feeding port 5 and falling to the ground.

[0030] A guide pipe 6 is provided on the outside of the discharge port. The guide pipe 6 is welded or bolted to the outer wall of the recycling cylinder 3 and communicates with the inner cavity of the recycling cylinder 3 through the discharge port. The guide pipe 6 restricts the movement direction of the waste discharged from the discharge port.

[0031] In some possible embodiments, please refer to Figure 1 The length of the feed inlet 5 is greater than the working section length of the pressure roller 2.

[0032] Waste generated within the working section of pressure roller 2 can enter the recycling cylinder 3 through the feed inlet 5. Whether the waste is generated at the edge or in the middle of the working section of pressure roller 2, it can fall precisely into the feed inlet 5 of the recycling cylinder 3, avoiding the problem of edge waste being missed due to insufficient length of feed inlet 5, and ensuring that all waste can smoothly enter the inner cavity of the recycling cylinder 3.

[0033] The longer feed port 5 enables the full-range reception of waste generated in the working section of the pressure roller 2, completely solving the problem of edge waste leakage that may exist in traditional equipment, and reducing the secondary cleaning cost caused by waste scattering.

[0034] In some possible embodiments, please refer to Figure 4 When the installation space is limited and the length of the recycling cylinder 3 is less than the length of the pressure roller 2, the length of the feed inlet 5 is less than the working section length of the pressure roller 2; an end waste chute 12 is also provided on one side of the recycling structure. The end waste chute 12 is located on the side of the recycling cylinder 3 away from the discharge port. The upper end of the end waste chute 12 extends to the bottom of the pressure roller 2, and the lower end of the end waste chute 12 extends to the top of the waste conveyor belt 9.

[0035] In scenarios where the length of the recycling cylinder 3 is less than the length of the pressure roller 2 due to limited installation space, an end waste chute 12 is installed at the end furthest from the discharge port to supplement the coverage of the recycling equipment.

[0036] During operation of the pressure roller 2, waste generated in the middle of the pressure roller 2 and at one of its edges falls into the corresponding feed inlet 5, enters the recycling cylinder 3, and is then carried to the discharge outlet by the conveying structure. The waste is then collected from the discharge outlet and enters the guide structure 8, and is then moved onto the waste conveyor belt 9 by the guide structure 8.

[0037] The waste material generated at the other end edge of the pressure roller 2 (hereinafter referred to as end waste material) falls directly into the end waste material guide trough 12. The upper end of the end waste material guide trough 12 extends below the pressure roller 2, and can directly receive the scattered waste material generated at the end of the pressure roller 2. The end waste material slides down the inner wall of the guide trough, extends through the lower end of the guide trough to the top of the waste material conveyor belt 9, and falls smoothly onto the waste material conveyor belt 9. The waste material falling from the end waste material guide trough 12 and the waste material falling from the guiding structure 8 are combined on the waste material conveyor belt 9 and then transported to the recycling container to complete the waste material recycling.

[0038] This solution is suitable for scenarios with limited installation space. By combining the recycling cylinder 3 and the end waste chute 12, the problem of insufficient length of the recycling cylinder 3 is solved. It can also cover the entire working section of the pressure roller 2 within a limited installation space, thus improving the adaptability of the equipment to different site conditions.

[0039] This solution does not require any modification to the calender or its installation site. It can achieve the recycling function simply by adding an end waste chute 12 in conjunction with the recycling cylinder 3, thus reducing the cost of equipment modification.

[0040] During installation, one side of the end waste inlet trough 12 is fixedly mounted on the frame 1, and the other side of the end waste inlet trough 12 is connected to the recycling cylinder 3. The upper end face of the end waste inlet trough 12 is flush with the upper end of the recycling cylinder 3 or flush with the inlet 5 of the recycling cylinder 3.

[0041] The end waste guide trough 12 is symmetrically arranged with the material guiding structure 8.

[0042] In some possible embodiments, please refer to Figure 3 The waste conveyor belt 9 is located in front of the recycling cylinder 3, and the material guiding structure 8 is inclined in the front-back direction.

[0043] With the side of the recycling cylinder 3 furthest from the pressure roller 2 as the front side, the waste conveyor belt 9 is located in front of the recycling cylinder 3, which facilitates the transportation of waste and adapts to the space installation and layout requirements.

[0044] The guiding structure 8 uses its tilt angle to guide the waste material to flow forward and downward along the inclined path, with its tilt direction precisely pointing towards the waste conveyor belt 9 located in front of the recycling cylinder 3. Since the lower end of the guiding structure 8 extends above the waste conveyor belt 9, the waste material smoothly slides onto the waste conveyor belt 9 in front of it under the combined action of gravity and tilt guidance.

[0045] The waste material at the end of the pressure roller 2 is received by the end waste material guide trough 12 and then slides down along the guide trough to the waste material conveyor belt 9 located in front of the recycling cylinder 3, where it merges with the waste material in the middle.

[0046] In addition, the waste conveyor belt 9 is located in front of the recycling cylinder 3 and can also receive waste falling from the inlet 5 of the recycling cylinder 3. The length direction of the waste conveyor belt 9 is consistent with the length direction of the recycling cylinder 3, and both ends of the waste conveyor belt 9 in the width direction are provided with side guard structures.

[0047] Optionally, an inclined extension plate 10 is installed on the side of the waste conveyor belt 9 facing the recycling cylinder 3. The upper end of the extension plate 10 gradually slopes upward from front to back. The extension plate 10 increases the bearing area of ​​the waste conveyor belt 9 to prevent waste from falling from the inlet 5 of the recycling cylinder 3 from falling to the ground. The edge of the extension plate 10 extends to the bottom of the recycling cylinder 3. When waste from the inlet 5 is struck and thrown out by the spiral blades of the auger or falls outside the inlet 5 due to other external forces, the waste falls directly onto the extension plate 10 and then slides down onto the waste conveyor belt 9 with the help of the extension plate 10.

[0048] Optionally, a baffle plate 11 along the width direction of the waste conveyor belt 9 is also provided at the end of the waste conveyor belt 9. The baffle plate 11 has a gap with the surface of the waste conveyor belt 9, and the baffle plate 11 is fixedly connected to the extension plate 10.

[0049] In some possible embodiments, please refer to Figure 2 and Figure 3 The material guiding structure 8 includes a first material guiding section and a second material guiding section; the inclination angle of the first material guiding section with respect to the horizontal direction is greater than the inclination angle of the second material guiding section with respect to the horizontal direction.

[0050] After the waste material is discharged from the outlet of the recycling cylinder 3, it first enters the first guide section of the guide structure 8. Due to the large inclination angle of the first guide section, it can quickly receive the waste material that has just been discharged. With the help of the large slope, it provides initial guiding force for the waste material, allowing the waste material to move rapidly down the first guide section and avoid accumulating near the outlet.

[0051] As the waste flows to the junction of the first and second guide sections, it enters the second guide section with a smaller inclination angle. The gentle slope of the second guide section slows down and buffers the waste, reducing its movement speed. Guided by the second guide section, the waste continues to move downwards at a lower speed, eventually sliding from the lower end of the second guide section onto the waste conveyor belt 9 located in front of the recycling cylinder 3. Throughout the process, the angle difference between the two guide sections creates a speed change from fast to slow, preventing blockage at the inlet of the guide structure 8, avoiding direct impact of the waste on the waste conveyor belt 9 due to excessive flow speed, reducing the bouncing and scattering of waste on the conveyor belt, ensuring that the waste falls more concentratedly on the conveyor belt, improving the accuracy of waste transfer; and reducing waste breakage or structural noise caused by high-speed impact, reducing equipment maintenance frequency and costs, and further improving the long-term economic efficiency of the equipment.

[0052] The first and second guide sections are at an angle in the front-to-back direction and also at an angle in the left-to-right direction; that is, the angle between the first and second guide sections and the horizontal direction is different. The second guide section is at an angle to the first guide section in the left-to-right direction, so that it has a horizontal speed when falling onto the waste conveyor belt 9, thereby reducing the impact on the waste conveyor belt 9.

[0053] In some possible embodiments, the material guiding structure 8 is a U-shaped plate structure with the open end of the material guiding structure 8 facing upward.

[0054] The conveying process of waste within the guide structure 8 is more constrained and stable. The open end of the guide structure 8 faces upward, and the plates on both sides form an effective barrier boundary, which can confine the waste within the U-shaped trough and prevent the waste from sliding off the sides of the guide structure 8 during the conveying process.

[0055] The end waste guide trough 12 can also adopt a U-shaped plate structure. The end waste guide trough 12 can also be configured as two connected guide sections, the end waste guide trough 12 includes an upper guide section and a lower guide section, and the included angle between the upper guide section and the lower guide section is the same as the included angle between the first guide section and the second guide section.

[0056] Both the end waste inlet chute 12 and the guide structure 8 are made of stainless steel plates or similar materials.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Scrap recycling apparatus, characterized in that, include: The recycling structure includes a recycling cylinder (3) and a conveying structure. The recycling cylinder (3) is connected to the frame (1) of the calender. The upper end of the recycling cylinder (3) is provided with a feed inlet (5), which is located below the pressure roller (2). The recycling cylinder (3) is provided with a discharge outlet at either end. The conveying structure is located in the inner cavity of the recycling cylinder (3). The conveying structure is used to receive the waste material entering from the feed inlet (5) and carry it to the discharge outlet. A waste conveyor belt (9) is located below the recycling structure and is used to transport the waste to the recycling container; A material guiding structure (8) is installed at the lower end of the recycling cylinder (3), the upper end of the material guiding structure (8) is connected to the discharge port, and the lower end of the material guiding structure (8) extends above the waste conveyor belt (9).

2. The scrap recycling apparatus of claim 1, wherein, The recycling cylinder (3) is horizontally arranged, and the discharge port of the recycling cylinder (3) is located on the lower end face of the recycling cylinder (3).

3. The scrap recycling apparatus of claim 1, wherein, The conveying structure is an auger structure (4), and the conveying structure is coaxially arranged with the recovery cylinder (3).

4. The scrap recycling apparatus of claim 1, wherein, The recycling cylinder (3) includes a feeding section, the upper end of which is open to form the feeding port (5).

5. The scrap recycling apparatus of claim 4, wherein, The central angle corresponding to the longitudinal section of the feed section is 180°.

6. The scrap recycling apparatus of claim 5, wherein, The length of the feed inlet (5) is greater than the working section length of the pressure roller (2).

7. The scrap recycling apparatus of claim 5, wherein, The length of the feed inlet (5) is less than the working section length of the pressure roller (2); an end waste chute (12) is also provided on one side of the recycling structure. The end waste chute (12) is located on the side of the recycling cylinder (3) away from the discharge port. The upper end of the end waste chute (12) extends to the bottom of the pressure roller (2), and the lower end of the end waste chute (12) extends to the top of the waste conveyor belt (9).

8. The scrap recycling apparatus of claim 1, wherein, The waste conveyor belt (9) is located in front of the recycling cylinder (3), and the material guiding structure (8) is inclined in the front-back direction.

9. The scrap recycling apparatus of claim 1, wherein, The material guiding structure (8) includes a first material guiding section and a second material guiding section; the inclination angle of the first material guiding section with respect to the horizontal direction is greater than the inclination angle of the second material guiding section with respect to the horizontal direction.

10. The scrap recycling apparatus of claim 1, wherein, The material guiding structure (8) is a U-shaped plate structure, with the open end of the material guiding structure (8) facing upward.

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