A plastic pellet generating device for thin film plastic recycling

Abstract

This utility model discloses a plastic pellet generating device for recycling thin-film plastics, including a hot-melt box and a water tank. A heating plate is installed on the inner wall of the hot-melt box. An extrusion screw is connected to the inside of the hot-melt box via a first motor. A mounting base is connected through the bottom of the hot-melt box. A filter plate is detachably installed inside the mounting base. A feed hopper is connected through the bottom of the mounting base, and an extrusion die is fixedly connected to the bottom of the feed hopper, extending into the water tank. This utility model heats the inside of the hot-melt box by activating the heating plate, causing the thin-film plastic to gradually melt and plasticize. Then, the first motor is activated to drive the extrusion screw to rotate, thereby drawing the molten plastic into the mounting base. The filter plate filters out fine sand, carbonized materials, and other impurities from the melt, preventing a reduction in the quality of the plastic pellets.

Description

Technical Field

[0001] This utility model relates to the field of plastic recycling and processing technology, specifically to a plastic pellet generating device for recycling thin film plastics. Background Technology

[0002] Plastic film is widely used due to its lightweight and high strength, but the resulting "white pollution" problem is becoming increasingly serious. Recycling and granulating plastic film is a key step in achieving resource recycling. Plastic film can be recycled into granules through recycling and granulation, which can be used to produce new plastic products (such as packaging and building materials), reducing dependence on virgin plastics.

[0003] Existing plastic pellet generating devices may contain non-target plastic components when melting thin-film plastics. Due to their high melting point, these components may not be completely melted, thus reducing the quality of the plastic pellets and potentially causing blockage of the extrusion orifice on the extrusion die. Therefore, these devices do not meet current requirements. To address this, we propose a plastic pellet generating device for recycling thin-film plastics. Utility Model Content

[0004] The purpose of this invention is to provide a plastic pellet generating device for recycling thin film plastics, in order to solve the problem mentioned in the background art that when existing plastic pellet generating devices melt thin film plastics, some non-target plastic components may be mixed inside the thin film plastics. Due to their high melting point, these components are not completely melted, thereby reducing the quality of the plastic pellets and, in severe cases, causing blockage of the extrusion orifice on the extrusion die.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic pellet generating device for recycling thin-film plastics, comprising a hot-melt box and a water tank, wherein the hot-melt box is fixedly disposed above the water tank, a heating plate is installed on the inner wall of the hot-melt box, an extrusion screw is connected to the inside of the hot-melt box via a first motor, a mounting base is connected through the bottom end of the hot-melt box, a filter plate is detachably installed inside the mounting base, a feed hopper is connected through the bottom end of the mounting base, an extrusion die is fixedly connected to the bottom end of the feed hopper and extends into the interior of the water tank, a second motor is fixedly disposed on the side of the feed hopper near the upper end, a cutting blade is fixedly connected to the output end of the second motor and the cutting blade contacts the bottom end of the extrusion die.

[0006] Preferably, the front end of the filter plate has symmetrical grooves, and crossbars are fixedly connected inside the grooves on both sides. Sliding plates are slidably connected to the outer surfaces of the two crossbars.

[0007] Preferably, each of the two sliding plates is fixedly connected to the inner wall of the corresponding groove on the side that is close to each other, and the spring is wound around the outer surface of the crossbar.

[0008] Preferably, a limiting plate is fixedly connected to the side of each of the two sliding plates that is far from each other, and in the natural state of the spring, the end of the limiting plate that is far from the sliding plate moves through the groove and extends to the outside of the filter plate.

[0009] Preferably, the inner wall of the mounting base has a limiting groove on both sides near the outer end that matches the limiting plate, and the limiting plate extends through to one end of the filter plate and is inserted into the corresponding limiting groove.

[0010] Preferably, a cooler is connected to one side of the water tank via a connecting pipe, a water pump is connected to one side of the cooler, and the water pump is connected to the interior of the water tank via a connecting pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model involves feeding a thin film plastic into a hot melt box, then activating a heating plate to heat the inside of the hot melt box, causing the thin film plastic to gradually melt and plasticize. Next, the first motor is activated to drive the extrusion screw to rotate, thereby driving the molten plastic into the mounting base. Through the filtration of the filter plate, fine sand, carbonized materials and other impurities in the melt can be filtered out in time, avoiding the reduction of the quality of plastic particles or the blockage of the extrusion die. The filtered melt enters the feed hopper and is extruded in strip shape through the die hole of the extrusion die. At the same time, the second motor is activated to drive the cutting blade to immediately cut it into particles, and the particles are surrounded by cooling water in the water tank for cooling, preventing the plastic particles from sticking together.

[0013] 2. This utility model pushes two sliding plates, causing them to slide along the crossbar towards each other and compress the spring, thereby causing the limiting plate to disengage from the limiting groove and move into the groove. This releases the limiting of the filter plate, allowing the filter plate to be disassembled from the mounting base for easy cleaning of filtered impurities. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a front sectional view of the entire utility model;

[0016] Figure 3 This is a front sectional view of the mounting base and filter plate of this utility model;

[0017] Figure 4 This utility model Figure 3 A schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Hot melt box; 2. Heating plate; 3. First motor; 4. Extrusion screw; 5. Mounting base; 501. Limiting groove; 6. Filter plate; 601. Groove; 7. Feed hopper; 8. Extrusion die; 9. Second motor; 10. Cutting knife; 11. Water tank; 12. Connecting pipe; 13. Cooler; 14. Water pump; 15. Crossbar; 16. Sliding plate; 17. Spring; 18. Limiting plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 4 The present invention provides an embodiment of a plastic pellet generating device for recycling thin film plastics, comprising a hot melt box 1 and a water tank 11. The hot melt box 1 is fixedly disposed above the water tank 11. A heating plate 2 is installed on the inner wall of the hot melt box 1. An extrusion screw 4 is connected to the inside of the hot melt box 1 by a first motor 3. A mounting base 5 is connected through the bottom end of the hot melt box 1. A filter plate 6 is detachably installed inside the mounting base 5. A feeding hopper 7 is connected through the bottom end of the mounting base 5. An extrusion die 8 is fixedly connected to the bottom end of the feeding hopper 7 and extends into the inside of the water tank 11. A second motor 9 is fixedly disposed on the side of the feeding hopper 7 near the upper end. A cutting blade 10 is fixedly connected to the output end of the second motor 9 and contacts the bottom end of the extrusion die 8.

[0021] By feeding the plastic film into the hot melt box 1, and then activating the heating plate 2 to heat the inside of the hot melt box 1, the plastic film gradually melts and plasticizes. Then, the first motor 3 is activated to drive the extrusion screw 4 to rotate, thereby driving the molten plastic into the mounting base 5. Through the filter plate 6, fine sand, carbonized materials and other impurities in the melt can be filtered out in time. The filtered melt enters the feed hopper 7 and is extruded in strip shape through the die hole of the extrusion die 8. Then, the second motor 9 is activated to drive the cutting blade 10 to immediately cut it into granules, and the granules are surrounded by cooling water in the water tank 11 for cooling, so as to prevent the plastic granules from sticking together.

[0022] A cooler 13 is connected to one side of the water tank 11 via a connecting pipe 12. A water pump 14 is connected to one side of the cooler 13. One side of the water pump 14 is connected to the inside of the water tank 11 via a connecting pipe 12. By starting the cooler 13 and the water pump 14, the water inside the water tank 11 is cooled by the cooler 13 and then pumped back into the water tank 11 by the water pump 14, thereby maintaining a constant water temperature.

[0023] The front end of the filter plate 6 has symmetrical grooves 601. A crossbar 15 is fixedly connected inside the grooves 601 on both sides. A sliding plate 16 is slidably connected to the outer surface of the two crossbars 15. A spring 17 is fixedly connected between the side of the two sliding plates 16 that is close to each other and the inner wall of the corresponding groove 601. The spring 17 is wrapped around the outer surface of the crossbar 15. A limiting plate 18 is fixedly connected to the side of the two sliding plates 16 that is far from each other. In the natural state of the spring 17, the end of the limiting plate 18 that is away from the sliding plate 16 moves through the groove 601 and extends to the outside of the filter plate 6. The inner wall of the mounting base 5 has limiting grooves 501 on both sides near the outer end that match the limiting plate 18. The end of the limiting plate 18 that extends through to the outside of the filter plate 6 is inserted into the corresponding limiting groove 501.

[0024] By pushing the two sliding plates 16, both sliding plates 16 slide along the crossbar 15 towards each other, compressing the spring 17, thereby causing the limiting plate 18 to disengage from the limiting groove 501 and move into the interior of the groove 601, thus releasing the limiting of the filter plate 6. Then the filter plate 6 can be disassembled from the interior of the mounting base 5, making it convenient to clean the filtered impurities.

[0025] When using the plastic pellet generating device for recycling thin film plastic, the thin film plastic is fed into the hot melt box 1, and then the heating plate 2 is activated to heat the inside of the hot melt box 1, causing the thin film plastic to gradually melt and plasticize. Then, the first motor 3 is activated to drive the extrusion screw 4 to rotate, thereby driving the molten plastic into the mounting base 5. Through the filter plate 6, fine sand, carbonized materials and other impurities in the melt can be filtered out in time, so as to avoid reducing the quality of plastic pellets or clogging the extrusion holes on the extrusion die 8. The filtered melt enters the feed hopper 7 and is extruded in strips through the die holes of the extrusion die 8. Then, the second motor 9 is activated to drive the cutting blade 10 to immediately cut it into pellets, and the pellets are surrounded by cooling water in the water tank 11 for cooling, so as to prevent the plastic pellets from sticking together. Furthermore, by activating the cooler 13 and the water pump 14, the water in the water tank 11 is cooled by the cooler 13 and then pumped back into the water tank 11 by the water pump 14, thereby maintaining a constant water temperature.

[0026] After the filter plate 6 has finished filtering, by pushing the two sliding plates 16, both sliding plates 16 slide along the crossbar 15 towards each other, and compress the spring 17, thereby causing the limiting plate 18 to disengage from the limiting groove 501 and move into the interior of the groove 601, thus releasing the limiting of the filter plate 6. Then the filter plate 6 can be disassembled from the interior of the mounting base 5, making it convenient to clean the filtered impurities.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A plastic pellet generating device for recycling thin-film plastics, comprising a hot-melt box (1) and a water tank (11), wherein the hot-melt box (1) is fixedly disposed above the water tank (11), characterized in that: The inner wall of the hot melt box (1) is equipped with a heating plate (2). The inside of the hot melt box (1) is connected to an extrusion screw (4) driven by a first motor (3). The bottom end of the hot melt box (1) is connected to a mounting base (5). The inside of the mounting base (5) is detachably equipped with a filter plate (6). The bottom end of the mounting base (5) is connected to a feed hopper (7). The bottom end of the feed hopper (7) is fixedly connected to an extrusion die (8), and the extrusion die (8) extends into the inside of the water tank (11). A second motor (9) is fixedly installed on the side of the feed hopper (7) near the upper end. The output end of the second motor (9) is fixedly connected to a cutting blade (10), and the cutting blade (10) contacts the bottom end of the extrusion die (8).

2. The plastic pellet generating device for recycling thin-film plastics according to claim 1, characterized in that: The filter plate (6) has symmetrical grooves (601) at its front end. A crossbar (15) is fixedly connected inside the grooves (601) on both sides. A sliding plate (16) is slidably connected to the outer surface of the two crossbars (15).

3. The plastic pellet generating device for recycling thin-film plastics according to claim 2, characterized in that: Each of the two sliding plates (16) is fixedly connected to the inner wall of the corresponding groove (601) on the side that is close to each other, and the spring (17) is wrapped around the outer surface of the crossbar (15).

4. The plastic pellet generating device for recycling thin-film plastics according to claim 3, characterized in that: Limiting plates (18) are fixedly connected to the sides of the two sliding plates (16) that are far apart from each other. In the natural state of the spring (17), the end of the limiting plate (18) that is far away from the sliding plate (16) moves through the groove (601) and extends to the outside of the filter plate (6).

5. The plastic pellet generating device for recycling thin-film plastics according to claim 4, characterized in that: The inner wall of the mounting base (5) near the outer end is provided with a limiting groove (501) that matches the limiting plate (18), and the limiting plate (18) extends through to one end of the filter plate (6) and is inserted into the corresponding limiting groove (501).

6. The plastic pellet generating device for recycling thin-film plastics according to claim 1, characterized in that: A cooler (13) is connected to one side of the water tank (11) via a connecting pipe (12), and a water pump (14) is connected to one side of the cooler (13). One side of the water pump (14) is connected to the inside of the water tank (11) via a connecting pipe (12).

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