Plastic recycling and separation device

Abstract

The utility model provides a plastic recycling and separation device, including a box body and a preheating device, an extrusion device and a heating and separation device arranged inside the box body from top to bottom. The extrusion device includes two symmetrical extrusion plates, and also includes an air intake pipe and an exhaust pipe connected to the square cavity, and the air intake pipe is connected to the air cooler; the heating and separation device includes a horizontally arranged hollow structure conveyor belt, and a feeding funnel and a high-temperature heater are arranged at the bottom of the conveyor belt. The utility model peels the plastic from the surface of the wire more completely by heating multiple times, improves the separation degree, thereby improving the recycling rate of the plastic and reducing the waste and pollution of the plastic.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic recycling equipment, in particular to a plastic recycling and separation device. Background Art

[0002] Plastic is one of the most commonly used industrial raw materials in modern society. Plastic is a macromolecule formed by polymerization of monomers through addition or condensation reactions. Its deformation resistance is medium, between fiber and rubber. It is composed of synthetic resin and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. Plastic has good processing properties and is easy to shape, such as blowing, extrusion, pressing, cutting, and welding.

[0003] Plastic molding refers to the process of making final plastic products from polymers manufactured by synthetic resin manufacturers. Processing methods (usually referred to as primary processing of plastics) include compression molding, extrusion molding, injection molding, blow molding, calendering, etc. In recent years, a large amount of waste plastics has caused serious pollution. In order to reduce plastic pollution, it is necessary to recycle and reuse waste plastics as raw materials to re-prepare plastic products. In production and life, there are many plastics that can be reused, such as waste food bags, sandals, wires, wire boards, agricultural films, pipes, barrels, basins, strapping tapes and various waste plastic products can be repeatedly molded and processed to produce plastic raw materials.

[0004] Most plastic raw materials can be directly reused after cleaning and crushing, but plastic products wrapped on the surface of other wires such as rubber-coated iron wires and cables are difficult to recycle because of their small size, irregular shape, and close connection with the internal wires. This utility model aims to propose a device for separating plastic wrapped on the surface of wires. Utility Model Content

[0005] In view of the deficiencies existing in the prior art, the utility model provides a plastic recycling and separation device, which solves the problem in the prior art that the plastic wrapped outside the wire is difficult to separate and recycle.

[0006] According to an embodiment of the utility model, a plastic recycling and separation device comprises a box body and a preheating device, an extrusion device and a heating and separation device arranged inside the box body from top to bottom, the top of the preheating device is connected to the outside of the box body, a heating sleeve is provided on the outside of the preheating device, the extrusion device comprises an extrusion cavity, two symmetrical extrusion plates are provided inside the cavity, first telescopic rods are vertically provided on opposite sides of the extrusion plates, the first telescopic rods drive the extrusion plates to move relative to each other inside the extrusion cavity, the extrusion device also comprises an air inlet pipe and an exhaust pipe connected to the square cavity, the air inlet pipe is connected to a cold air blower; the heating and separation device comprises a horizontally arranged conveyor belt, the surface of the conveyor belt is a hollow structure, a feeding funnel is provided at the bottom of the conveyor belt, and a high-temperature heater is also provided inside the heating and separation device.

[0007] Furthermore, a first sealing door is provided between the preheating device and the extrusion device, and the first sealing door is a symmetrical door body that rotates downward to open. A second sealing door is provided at the bottom of the extrusion device, and the second sealing door is a door body that slides toward both sides to open.

[0008] Furthermore, a feed funnel is provided on the top of the box body, and the bottom of the feed funnel is connected to the preheating device.

[0009] Furthermore, the extrusion chamber is a square or cylindrical structure, and the extrusion plate is a vertically arranged convex arc-shaped plate.

[0010] Furthermore, the extrusion plate is provided with a plurality of air holes.

[0011] Furthermore, the conveyor belt includes two chain conveyor belts arranged in parallel and a support net arranged horizontally between the chain conveyor belts. The support net moves in the horizontal plane as the chain conveyor belts rotate. One end of the conveyor belt passes through the box and extends to the outside.

[0012] Furthermore, the high temperature heater is arranged on the inner edge of the discharge funnel, and its heating surface is arranged upwards close to the discharge funnel.

[0013] Furthermore, a rolling device is provided between the extrusion device and the heating and separation device, and an arc-shaped third sealing door is provided at the bottom of the rolling device. Two second telescopic rods are symmetrically arranged downward at the top center of the rolling device, and the top of the second telescopic rod is rotatably connected. Rolling wheels are connected to both ends of the bottom of the second telescopic rod, and the rolling wheels correspond to the curvature of the third sealing door along the rotation direction of the telescopic rod.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The box of the utility model is provided with a preheating device, an extrusion device and a heating separation device from top to bottom, wherein the preheating device preliminarily heats the material, so that the plastic wrapped on the surface of the wire is softened, but not completely melted; then the material is placed in the extrusion device, and the air inlet pipe provided in the extrusion device is connected to the air cooler, so that the softened plastic is cooled rapidly by continuous cold air, and the plastic becomes hard, brittle and fragile during the rapid heating and cooling process, and loses its original high flexibility. At this time, the material is squeezed by the extrusion plate, so that the plastic can be broken into small pieces and fall off from the surface of the wire. Even if it does not fall off completely, the bonding tightness between the plastic and the wire will be reduced; finally, the material is placed in the heating separation device, and the plastic is melted by high-temperature heating, and falls through the mesh conveyor belt to discharge the material, while the internal wire is transported out by the conveyor belt, thereby realizing the separation and recycling of the plastic. The utility model peels the plastic from the surface of the wire more completely through multiple heating, improves the separation degree, and thus improves the recycling rate of the plastic, and reduces the waste and pollution of the plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0017] Figure 2 It is a side schematic diagram of the internal structure of an embodiment of the utility model.

[0018] Figure 3 It is a front schematic diagram of the conveyor belt in the embodiment of the utility model.

[0019] In the above drawings: 1. Box body; 2. Preheating device; 3. Extrusion device; 4. Rolling device; 5. Conveyor belt; 6. Feeding hopper; 7. First sealing door; 8. Second sealing door; 9. Third sealing door; 11. Feeding hopper; 12. Discharging port; 21. Heating sleeve; 31. Extrusion plate; 32. First telescopic rod; 33. Inlet pipe; 34. Exhaust pipe; 41. Second telescopic rod; 42. Rolling wheel; 51. Chain conveyor belt; 52. Support net; 61. High temperature heater. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1 As shown, the embodiment of the utility model proposes a plastic recycling and separation device, comprising a box body 1 and a preheating device 2, an extrusion device 3 and a heating and separation device arranged from top to bottom inside the box body 1. In this embodiment, the box body 1 is a vertically arranged rectangular parallelepiped structure, and a feeding funnel 11 is arranged at the top thereof, and the bottom of the feeding funnel 11 is connected to the preheating device 2.

[0022] like Figure 2 As shown, in this embodiment, the preheating device 2 includes a heat-resistant cavity, the top of the cavity is connected to the feeding funnel 11, and a heating sleeve 21 is provided outside the preheating device 2. The heating sleeve 21 is preferably an electric heating wire structure. A first sealing door 7 is provided between the preheating device 2 and the extrusion device 3, and the first sealing door 7 is a symmetrical door body that rotates downward to open.

[0023] The extrusion device 3 includes an extrusion chamber, in which two symmetrical extrusion plates 31 are arranged inside. A first telescopic rod 32 is vertically arranged on the opposite side of the extrusion plate 31. The first telescopic rod 32 drives the extrusion plate 31 to move relatively inside the extrusion chamber. The extrusion device 3 also includes an air inlet pipe 33 and an exhaust pipe 34 connected to the square cavity. The air inlet pipe 33 is connected to the air cooler. A second sealing door 8 is provided at the bottom of the extrusion device 3. The second sealing door 8 is a door body that slides open toward both sides. Preferably, the extrusion chamber is a square structure, and the extrusion plate 31 is a vertically arranged convex arc-shaped plate. The extrusion plate 31 is also provided with a plurality of air holes so that the cold air can better pass through the extrusion plate 31 to quickly cool the internal material.

[0024] like Figure 3 As shown, the heating and separation device includes a horizontally arranged conveyor belt 5, the surface of the conveyor belt 5 is a hollow structure, a feeding hopper 6 is arranged at the bottom of the conveyor belt 5, and a high-temperature heater 61 is also arranged inside the heating and separation device. Preferably, the conveyor belt 5 includes two chain conveyor belts 515 arranged in parallel and a support net 52 arranged horizontally between the chain conveyor belts 515, the support net 52 moves in the horizontal plane with the rotation of the chain conveyor belt 515, one end of the conveyor belt 5 passes through the box 1 and extends to the outside, and a discharge port 12 is arranged on the box 1 corresponding to the conveyor belt 5. Furthermore, the high-temperature heater 61 is arranged on the inner edge of the feeding hopper 6, and its heating surface is arranged upward close to the feeding hopper 6. The high-temperature heater 61 preferably adopts an electric heating pipe structure, and correspondingly, the funnel adopts a steel structure with good thermal conductivity.

[0025] In a further solution of this embodiment, a rolling device 4 is further provided between the extrusion device 3 and the heating and separation device, and an arc-shaped third sealing door 9 is provided at the bottom of the rolling device 4. Two second telescopic rods 41 symmetrically arranged downward are provided at the center of the top of the rolling device 4. The top of the second telescopic rod 41 is rotatably connected, and rollers 42 are connected to both ends of the bottom of the second telescopic rod 41. The rollers 42 correspond to the arc of the third sealing door 9 along the rotation direction of the second telescopic rod 41. After entering the rolling device 4, the material is located between the roller 42 and the third sealing door 9. The roller 42 is adjusted by the second telescopic rod 41 to compact the material. Then, the second telescopic rod 41 and the roller 42 rotate along the arc of the third sealing door 9 at the same time to roll the material back and forth, so that the plastic fragments are better peeled off from the surface of the wire.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A plastic recycling and separation device, characterized in that: It includes a box body and a preheating device, an extrusion device and a heating separation device arranged inside the box body from top to bottom. The top of the preheating device is connected to the outside of the box body. A heating sleeve is provided on the outside of the preheating device. The extrusion device includes an extrusion cavity, inside which two symmetrical extrusion plates are provided. First telescopic rods are vertically provided on the opposite sides of the extrusion plates. The first telescopic rod drives the extrusion plates to move relatively inside the extrusion cavity. The extrusion device also includes an air inlet pipe and an exhaust pipe connected to the square cavity. The air inlet pipe is connected to the air cooler. The heating separation device includes a horizontally arranged conveyor belt, the surface of the conveyor belt is a hollow structure, a feeding funnel is provided at the bottom of the conveyor belt, and a high-temperature heater is also provided inside the heating separation device.

2. A plastic recycling and separation device as claimed in claim 1, characterized in that: A first sealing door is provided between the preheating device and the extrusion device. The first sealing door is a symmetrical door body that rotates downward to open. A second sealing door is provided at the bottom of the extrusion device. The second sealing door is a door body that slides toward both sides to open.

3. A plastic recycling and separation device as claimed in claim 1, characterized in that: A feeding funnel is arranged on the top of the box body, and the bottom of the feeding funnel is connected to the preheating device.

4. A plastic recycling and separation device as claimed in claim 1, characterized in that: The extrusion chamber is a square or cylindrical structure, and the extrusion plate is a vertically arranged convex arc-shaped plate.

5. A plastic recycling and separation device as claimed in claim 1, characterized in that: The extrusion plate is provided with a plurality of air holes.

6. A plastic recycling and separation device as claimed in claim 1, characterized in that: The conveyor belt comprises two chain conveyor belts arranged in parallel and a support net arranged horizontally between the chain conveyor belts. The support net moves in a horizontal plane with the rotation of the chain conveyor belts. One end of the conveyor belt passes through the box and extends to the outside.

7. A plastic recycling and separation device as claimed in claim 1, characterized in that: The high temperature heater is arranged on the inner edge of the material discharge funnel, and the heating surface thereof is arranged upwards close to the material discharge funnel.

8. A plastic recycling and separation device as claimed in claim 1, characterized in that: A rolling device is also provided between the extrusion device and the heating and separation device, and an arc-shaped third sealing door is provided at the bottom of the rolling device. Two second telescopic rods are symmetrically arranged downward at the top center of the rolling device, and the top of the second telescopic rods is rotatably connected. Rolling wheels are connected to the two ends of the bottom of the second telescopic rods, and the rolling wheels correspond to the curvature of the third sealing door along the rotation direction of the telescopic rod.

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