Recycled plastic particle preheating device

Abstract

The utility model provides a recycled plastic particle preheating device, which relates to the technical field of recycled plastic particle processing, and comprises a shell, a motor, a chain scraper conveyor, a material receiving plate, a through groove, an electric heating module, a material inlet, a material outlet, a material baffle plate and a cross rod, when the device is used, preheated and dried reprocessed plastic particles can be directly put into a feeding hopper of an extruder, so that the reprocessed plastic particles do not need to be firstly collected and then put, the using convenience of the device is improved, and the device is convenient to use and high in practicability. The opening at the lower end of the guide chute can be opened and closed by controlling the movement of the sealing plate, so that whether materials are fed into the extruder or not in the guide chute can be controlled, the situation that excessive plastic particles in the extruder overflow is avoided, meanwhile, the device does not need to be shut down repeatedly, and the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of recycled plastic pellet processing technology, specifically a recycled plastic pellet preheating device. Background Technology

[0002] To achieve resource recycling, plastic products are typically recycled and reprocessed. Recycled plastic is usually crushed into recycled plastic pellets, which are then sent to a washing and drying process. The dried pellets are packaged and ready for processing. However, because plastic pellets absorb moisture from the air, injection molding with a high moisture content can lead to defects such as silver streaks, affecting product quality. Therefore, before use, recycled plastic pellets with high moisture content need to be preheated and dried. Existing preheating devices cannot directly feed preheated and dried plastic pellets into the extruder; they must be collected separately and fed into the extruder individually, which is inconvenient and fails to meet usage requirements. Utility Model Content

[0003] The purpose of this invention is to provide a preheating device for recycled plastic pellets, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The preheating device for recycled plastic granules includes a housing, inside which is a chain conveyor driven by a motor. The chain conveyor is inclined within the housing. A receiving plate is uniformly arranged on the outer surface of the chain conveyor, the height of which is no greater than twice the diameter of the recycled plastic granules. A through groove is formed on the outer surface of the housing, and an electric heating module is installed at the through groove. An inlet and an outlet are provided on the housing. A baffle plate is provided at the inlet of the housing, and a crossbar is provided at the lower end of the baffle plate. When the receiving plate passes the crossbar, the shortest distance between the receiving plate and the crossbar is less than the diameter of the recycled plastic granules. A guide trough is provided at the outlet of the housing, with openings at both the upper and lower ends. An extension plate extending into the housing is provided at the upper end of the guide trough.

[0005] Preferably, the lower opening of the feed chute is vertically downward.

[0006] Preferably, two fixing rods are symmetrically arranged on the outer surface of the housing, and a sealing plate is slidably connected to the two fixing rods. A handle is provided on the lower surface of the sealing plate, and a stop is provided on the fixing rod to prevent the sealing plate from sliding off the fixing rod.

[0007] Preferably, the housing has an installation groove, and a receiving box is slidably connected inside the installation groove. Two handles are symmetrically arranged on the outer surface of the receiving box.

[0008] Preferably, the lower end face of the housing is provided with casters.

[0009] The beneficial effects of this utility model are:

[0010] When in use, this device can directly feed preheated and dried recycled plastic granules into the feed hopper of the extruder, eliminating the need for prior collection and thus improving the convenience of use. Furthermore, by controlling the movement of the sealing plate, the opening at the lower end of the feed chute can be opened and closed, thereby controlling whether material is fed into the extruder from the feed chute and preventing excessive plastic granules from overflowing from the extruder. At the same time, the device does not require repeated shutdowns, further enhancing its ease of use. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0012] Figure 2 This is a structural diagram of the receiving box.

[0013] Figure 3 This is a schematic diagram of the internal structure of the shell.

[0014] In the diagram: 1. Housing; 2. Motor; 3. Chain conveyor; 4. Receiving plate; 5. Electric heating module; 6. Baffle plate; 7. Crossbar; 8. Guide chute; 9. Extension plate; 10. Fixing rod; 11. Sealing plate; 12. Handle; 13. Stop block; 14. Receiving box; 15. Handle; 16. Casters. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0016] like Figure 1-3 As shown, a preheating device for recycled plastic granules includes a housing 1. Inside the housing 1, a chain conveyor 3 driven by a motor 2 is installed. The chain conveyor 3 is inclined inside the housing 1. A receiving plate 4 is evenly arranged on the outer surface of the chain conveyor 3. The height of the receiving plate 4 is no more than twice the diameter of the recycled plastic granules. A through groove is opened on the outer surface of the housing 1. An electric heating module 5 is installed at the through groove of the housing 1. The housing 1 is provided with an inlet and an outlet. A baffle plate 6 is provided at the inlet of the housing 1. A crossbar 7 is provided at the lower end of the baffle plate 6. When the receiving plate 4 passes the crossbar 7, the shortest distance between the receiving plate 4 and the crossbar 7 is less than the diameter of the recycled plastic granules. A guide trough 8 is provided at the outlet of the housing 1. Both the upper and lower ends of the guide trough 8 are open. An extension plate 9 extending into the interior of the housing 1 is provided at the upper end of the guide trough 8.

[0017] When removing moisture from recycled plastic granules, the recycled plastic granules are first placed between the baffle plate 6 and the outer surface of the housing 1, so that the plastic granules located between them can enter the receiving plate 4 through the feed port on the housing 1. The distance between two adjacent receiving plates 4 is slightly larger than the diameter of the recycled plastic granules, but less than twice the diameter of the recycled plastic granules. At the same time, the height of the receiving plate 4 is limited so that each receiving plate 4 has only one layer of non-overlapping plastic granules, thereby ensuring that the electric heating module 5 preheats and dries the plastic granules on the receiving plate 4.

[0018] The electric heating module 5 heats the air by heating the internal heating rod or heating wire, and preheats and dries the plastic particles on the receiving plate 4 by heat radiation. The chain plate and receiving plate 4 in the chain plate conveyor 3 are both made of metal, so that they can withstand the high temperature of the electric heating module 5 during operation.

[0019] After the plastic granules on the receiving plate 4 are preheated and dried by the electric heating module 5, the dehydrated plastic granules will fall onto the extension plate 9 under the rotation of the chain conveyor 3 and the action of gravity, and enter the guide chute 8 through the extension plate 9. When using this preheating device, the device is moved to the side of the extruder, and the lower opening of the guide chute 8 is aligned with the feed hopper of the extruder so that the plastic granules coming out of the guide chute 8 can directly enter the feed hopper of the extruder.

[0020] The presence of the crossbar 7 prevents plastic particles located between the baffle plate 6 and the housing 1 from entering the bottom of the housing 1 through the crossbar 7, thereby avoiding the accumulation of plastic particles at the bottom of the housing 1 and the resulting waste of materials.

[0021] Furthermore, the lower opening of the guide chute 8 is set vertically downward, aligning the lower opening of the guide chute 8 with the feed hopper of the extruder. The lower opening of the guide chute 8 is located directly above the feed hopper of the extruder, which facilitates control of the discharge direction of the plastic granules and improves the stability of the discharge of the guide chute 8.

[0022] Furthermore, two fixing rods 10 are symmetrically arranged on the outer surface of the housing 1. A sealing plate 11 is slidably connected to the two fixing rods 10. A handle 12 is provided on the lower surface of the sealing plate 11. A stop block 13 is provided on the fixing rod 10 to prevent the sealing plate 11 from sliding off the fixing rod 10. When the extruder is not consuming the plastic granules in the feed hopper, in order to prevent the plastic granules in the feed hopper from overflowing, the lower opening of the guide trough 8 can be closed by moving the sealing plate 11 on the fixing rod 10, so that the preheated and dried plastic granules can enter and be stored in the guide trough 8 first. When the extruder starts to consume the plastic granules in the feed hopper, the closure can be opened so that the plastic granules in the guide trough 8 can be normally fed into the feed hopper of the extruder. Of course, the plastic granules in the guide trough 8 can also be received by an external material cylinder or bag.

[0023] Furthermore, the housing 1 is provided with an installation groove, and a receiving box 14 is slidably connected inside the installation groove. Two handles 15 are symmetrically arranged on the outer surface of the receiving box 14. When the device is used alone, the receiving box 14 can be removed from the housing 1 and placed directly below the guide chute 8 to collect the preheated and dried plastic granules. When the receiving box 14 is inside the housing 1, a very small amount of plastic granules falling from the chain conveyor 3 can also be collected through the receiving box 14.

[0024] Furthermore, the lower end face of the housing 1 is provided with casters 16 to facilitate the movement of the preheating device and improve the convenience of using the device.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A preheating device for recycled plastic pellets, characterized in that, The device includes a housing, inside which is a chain conveyor driven by a motor. The chain conveyor is inclined within the housing. Receiving plates are evenly distributed on the outer surface of the chain conveyor, with the height of each receiving plate not exceeding twice the diameter of the recycled plastic granules. A through-slot is formed on the outer surface of the housing, and an electric heating module is installed at the through-slot. The housing has an inlet and an outlet. A baffle plate is installed at the inlet, and a crossbar is installed at the lower end of the baffle plate. When the receiving plate passes the crossbar, the shortest distance between the receiving plate and the crossbar is less than the diameter of the recycled plastic granules. A guide trough is installed at the outlet, with openings at both the top and bottom. An extension plate extending into the interior of the housing is installed at the upper end of the guide trough.

2. The preheating device for recycled plastic pellets according to claim 1, characterized in that, The lower opening of the feed chute is set vertically downward.

3. The preheating device for recycled plastic pellets according to claim 2, characterized in that, Two fixing rods are symmetrically arranged on the outer surface of the housing. A sealing plate is slidably connected to the two fixing rods. A handle is provided on the lower surface of the sealing plate. A stop is provided on the fixing rod to prevent the sealing plate from sliding off the fixing rod.

4. The preheating device for recycled plastic pellets according to claim 1, characterized in that, The housing has an installation groove, and a receiving box is slidably connected inside the installation groove. Two handles are symmetrically arranged on the outer surface of the receiving box.

5. The preheating device for recycled plastic pellets according to any one of claims 1-4, characterized in that, The lower end face of the housing is provided with casters.

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