A granulator for plastic recycling

Abstract

The utility model relates to the technical field of plastic granulator discloses a granulator for plastic recycling, including equipment base, the top fixed mounting of equipment base has the support frame, the top of support frame has erected auger main part, the output fixed mounting of auger main part has cutting bin, the feed inlet of auger main part is linked with the feeding hopper, the bottom end communication of cutting bin has the discharge section, the discharge section vertical setting, the inside fixed mounting of discharge section has the triangular distribution board, the top of triangular distribution board is equipped with the air blowing hole, by putting plastic raw materials into the feeding hopper, then enter the auger main part, be squeezed out by auger main part, then enter the cutting bin, be cut into granules by cutting bin, then vertical fall into the discharge section, plastic granules vertical fall under the action of gravity, can effectively avoid the problem that the unhardened plastic granules are accumulated and lead to mutual adhesion.

Description

Technical Field

[0001] This utility model relates to the field of plastic granulator technology, specifically a plastic recycling granulator. Background Technology

[0002] Plastic granulators are mainly used to process waste plastic films (industrial packaging films, agricultural mulch films, greenhouse films, beer bags, tote bags, etc.), woven bags, agricultural convenience bags, basins, buckets, beverage bottles, furniture, daily necessities, etc. They are suitable for most common waste plastics and are the most widely used, most popular, and most welcomed plastic recycling processing machinery in the waste plastic recycling industry. Existing granulators use an auger to extrude heated and softened plastic from inside the granulator for granulation. After being extruded, the plastic granules enter the discharge section. Currently, the discharge section is often vertically set, resulting in a low discharge rate and a tendency for a large number of uncooled and unhardened plastic granules to stick together. Utility Model Content

[0003] The purpose of this invention is to provide a plastic recycling granulator to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a plastic recycling granulator, including a base, a support frame fixedly installed on the top of the base, an auger body mounted on the top of the support frame, a cutting chamber fixedly installed at the output end of the auger body, a feeding hopper connected to the feeding end of the auger body, and a discharge section connected to the bottom end of the cutting chamber, the discharge section being vertically arranged;

[0005] A triangular dividing plate is fixedly installed inside the discharge section. The top of the triangular dividing plate has an air blowing hole. Suction chambers are fixedly installed on the left and right sides of the discharge section. The suction chambers are located above the triangular dividing plate, and the outer wall of the suction chamber with the air blowing hole is located inside the discharge section. Air blowing chambers are fixedly installed on the left and right sides of the discharge section. The outer wall of the air blowing chamber with the air blowing hole is located inside the discharge section, and the air blowing chamber is located below the triangular dividing plate. The air blowing chamber is wider at the top and narrower at the bottom. The side of the air blowing chamber with the air blowing hole is an inclined surface. A guide plate is fixedly installed on the inner wall of the discharge section. The guide plate guides the plastic particles between the two air blowing chambers. The bottom end of the discharge section extends into the receiving box.

[0006] Furthermore, an electric heating ring is fitted on the outer wall of the auger body. Multiple electric heating rings are provided, and they are more densely packed closer to the right end of the auger body. A shielding shell is installed on the top of the support frame, which covers the auger body and the electric heating rings.

[0007] Furthermore, an air inlet is provided on the left outer wall of the cutting chamber, a motor is fixedly installed on the left outer wall of the cutting chamber, a rotating shaft is fixedly installed on the output end of the motor, a fan blade and a cutting blade are fixedly installed on the outer wall of the rotating shaft, a perforated plate is fixedly installed on the right inner wall of the cutting chamber, the perforated plate is located at the connection between the cutting chamber and the output end of the auger body, and the cutting blade is close to the perforated plate.

[0008] Furthermore, a circulation pump is installed on the outer wall of the discharge section. The air inlet of the circulation pump is connected to a suction pipe one, the top end of which is connected to the inside of the cutting chamber. The air outlet of the circulation pump is connected to an air inlet pipe two, which is connected to the inside of the triangular material distribution plate. A vertical plate is fixedly installed on the top of the equipment base, and an air extraction pump and a booster pump are fixedly installed on the vertical plate. The air inlet of the air extraction pump is connected to a suction pipe two, the left end of which is connected to the air outlet of the suction chamber. The air outlet of the booster pump is connected to an air inlet pipe three, the left end of which is connected to the air inlet of the blowing chamber.

[0009] Furthermore, a mixing chamber is provided between the vacuum pump and the booster pump. The outlet of the vacuum pump is connected to the mixing chamber through a pipe, and the inlet of the booster pump is connected to the mixing chamber through a pipe. An air inlet is connected to the back of the mixing chamber.

[0010] Furthermore, the top of the receiving box is provided with an air vent, and the back of the receiving box is provided with a door.

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

[0012] 1. By feeding plastic raw materials into the hopper, they enter the auger body, are squeezed out by the auger body, and then enter the cutting chamber, where they are cut into granules and then fall vertically into the discharge section. The plastic granules fall vertically under the action of gravity, which can effectively avoid the problem of unhardened plastic granules accumulating and sticking together.

[0013] 2. The falling plastic granules are dispersed by the triangular separating plate. Because the triangular separating plate blows air upwards into the suction chamber, two airflows are formed above the triangular separating plate. The airflow slows down the falling speed of the granules and cools them down. When the plastic passes between the two air chambers, the outer surface of the plastic is already in a hardened state. At this time, the downward airflows from the air chambers interfere with each other to form a turbulent airflow. On the one hand, it can disperse the granules and allow them to enter the receiving box more quickly. The airflow also prevents the granules from accumulating at the inlet of the receiving box. On the other hand, it cools the granules a second time, making them cool and stabilized. Attached Figure Description

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

[0015] Figure 2 This utility model Figure 1 Structural diagram of the rear view;

[0016] Figure 3 This utility model Figure 1 A structural schematic diagram of the front sectional view;

[0017] Figure 4 This is a structural schematic diagram of the cutting chamber and discharge section of this utility model (front sectional view).

[0018] Figure 5 This is a schematic diagram of the structure of the circulating pump, air pump, booster pump, triangular material distribution plate, air intake chamber and air blowing chamber of this utility model.

[0019] In the diagram: 1. Equipment base; 2. Support frame; 3. Screw conveyor body; 4. Electric heating ring; 5. Shielding shell; 6. Feed hopper; 7. Cutting chamber; 701. Motor 1; 702. Rotating shaft; 703. Blower fan blade; 704. Cutting blade; 705. Fine perforation plate; 8. Discharge section; 9. Triangular material distribution plate; 10. Suction chamber; 11. Blowing chamber; 12. Guide plate; 13. Circulation pump; 1301. Suction pipe 1; 1302. Inlet pipe 2; 14. Air pump; 1401. Suction pipe 2; 15. Booster pump; 1501. Inlet pipe 3; 16. Mixing chamber; 1601. Air inlet end; 17. Receiving box; 1701. Air outlet; 1702. Box door. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-5 This utility model provides a technical solution: a plastic recycling granulator, including a base 1, a support frame 2 fixedly installed on the top of the base 1, an auger body 3 mounted on the top of the support frame 2, a cutting chamber 7 fixedly installed at the output end of the auger body 3, a feed hopper 6 connected to the feed end of the auger body 3, and a discharge section 8 connected to the bottom end of the cutting chamber 7. The discharge section 8 is vertically arranged. By feeding plastic raw materials into the feed hopper 6, they enter the auger body 3, are squeezed out by the auger body 3, and then enter the cutting chamber 7, are cut into granules by the cutting chamber 7, and then fall vertically into the discharge section 8. The plastic granules fall vertically under the action of gravity, which can effectively avoid the problem of unhardened plastic granules accumulating and sticking together.

[0022] A triangular dividing plate 9 is fixedly installed inside the discharge section 8. The top of the triangular dividing plate 9 has an air blowing hole. Suction chambers 10 are fixedly installed on the left and right sides of the discharge section 8, positioned above the triangular dividing plate 9. The outer wall of the suction chamber 10 with the air blowing hole is located inside the discharge section 8. Air blowing chambers 11 are fixedly installed on the left and right sides of the discharge section 8, with the outer wall of the air blowing chamber 11 with the air blowing hole located inside the discharge section 8. The air blowing chamber 11 is located below the triangular dividing plate 9, wider at the top and narrower at the bottom. The side of the air blowing chamber 11 with the air blowing hole is inclined. A guide plate 12 is fixedly installed on the inner wall of the discharge section 8, guiding the plastic particles between the two air blowing chambers 11. The bottom end extends into the receiving box 17, and the falling plastic particles are dispersed by the triangular dividing plate 9. Because the triangular dividing plate 9 blows air into the upward suction chamber 10, the suction chamber 10 sucks in air, creating two airflows above the triangular dividing plate 9. The airflow can slow down the falling speed of the particles and cool them down. When the plastic passes between the two air chambers 11, the outer surface of the plastic is already in a hardened state. At this time, the downward airflows blown from the air chambers 11 interfere with each other to form a turbulent airflow. On the one hand, it can disperse the particles and allow them to enter the receiving box 17 more quickly. The airflow also prevents the particles from accumulating at the feed inlet of the receiving box 17. On the other hand, it cools the particles a second time, making them cool down and stabilize.

[0023] The outer wall of the auger body 3 is fitted with multiple electric heating rings 4, which are more densely packed closer to the right end of the auger body 3. The top of the support frame 2 is equipped with a shielding shell 5, which covers the auger body 3 and the electric heating rings 4. The electric heating rings 4 heat the auger body 3, thereby heating the plastic extruded inside the auger body 3 and melting the plastic. The electric heating rings 4 are more densely packed on the right end of the auger body 3, which allows the temperature on the right end of the auger body 3 to rise higher, so that the plastic can be melted faster. This also prevents the left end of the auger body 3 from overheating, which would cause the extruded plastic entering the cutting chamber 7 to be too hot and unable to be cut normally.

[0024] An air inlet is provided on the left outer wall of the cutting chamber 7. A motor 701 is fixedly installed on the left outer wall of the cutting chamber 7. A rotating shaft 702 is fixedly installed on the output end of the motor 701. A fan blade 703 and a cutting blade 704 are fixedly installed on the outer wall of the rotating shaft 702. A perforated plate 705 is fixedly installed on the right inner wall of the cutting chamber 7. The perforated plate 705 is located at the connection between the cutting chamber 7 and the output end of the auger body 3. The cutting blade 704 is close to the perforated plate 705. The molten plastic strip is squeezed out from the holes on the perforated plate 705. Then, the cutting blade 704 is rotated to cut the plastic strip into particles. Machine 701 drives the rotating shaft 702 to rotate, which in turn drives the blower blades 703 and the cutting blades 704 to rotate. The rotation of the blower blades 703 generates airflow, which blows onto the plastic particles being cut. Since the airflow itself is the higher temperature airflow inside the cutting chamber 7, it can prevent the plastic particles from cracking due to sudden cooling while ensuring cooling. In addition, the air inlet on the cutting chamber 7 can also allow some low temperature air to enter the cutting chamber 7 and mix with the higher temperature airflow inside the cutting chamber 7, so that the temperature of the airflow blown onto the plastic particles is lower than the melting temperature of the plastic particles.

[0025] A circulating pump 13 is installed on the outer wall of the discharge section 8. The air inlet of the circulating pump 13 is connected to a suction pipe 1301, and the top end of the suction pipe 1301 is connected to the inside of the cutting chamber 7. The air outlet of the circulating pump 13 is connected to a second air inlet pipe 1302, and the second air inlet pipe 1302 is connected to the inside of the triangular material distribution plate 9. A vertical plate is fixedly installed on the top of the equipment base 1, and a vacuum pump 14 and a booster pump 15 are fixedly installed on the vertical plate. The air inlet of the vacuum pump 14 is connected to a second air inlet pipe 1401, and the left end of the second air inlet pipe 1401 is connected to the air outlet of the suction chamber 10. The air outlet of the booster pump 15 is connected to a third air inlet pipe 1501, and the left end of the third air inlet pipe 1501 is connected to the air blowing chamber 1. The air inlet of section 1 is connected, and the high-temperature airflow in the cutting chamber 7 is drawn into the triangular dividing plate 9 by the circulating pump 13. Then, the falling particles are blown from the triangular dividing plate 9 to ensure that the plastic particles in the high temperature state do not come into direct contact with the lower temperature air, so as to achieve the purpose of gradually cooling the particles. The airflow blown from the top of the triangular dividing plate 9 is drawn in by the suction pump 14, and the air is drawn in by the booster pump 15 and pressurized and then introduced into the blowing chamber 11. Then, it is blown out into the discharge section 8, forming a strong turbulent airflow, thereby ensuring the secondary cooling effect on the plastic particles and ensuring that the airflow can completely disperse the particles and prevent the particles from accumulating at the inlet of the receiving box 17.

[0026] A mixing chamber 16 is provided between the air pump 14 and the booster pump 15. The air outlet of the air pump 14 is connected to the mixing chamber 16 through a pipe, and the air inlet of the booster pump 15 is connected to the mixing chamber 16 through a pipe. An air inlet 1601 is connected to the back of the mixing chamber 16. By mixing the high-temperature airflow and the low-temperature air in the mixing chamber 16, an airflow with a temperature higher than normal is generated. This airflow is used to disperse the particles and cool them down a second time. This can prevent the low-temperature air from significantly reducing the internal temperature of the discharge section 8 while ensuring the cooling effect.

[0027] The top of the receiving box 17 is provided with an air vent 1701, which allows the airflow carrying particles to be discharged after entering the receiving box 17. The back of the receiving box 17 is provided with a door 1702 for removing the particles inside the receiving box 17.

[0028] Working principle: During use, raw materials are added into the auger body 3 from the feed hopper 6. The auger body 3 and the electric heating ring 4 are turned on, melting the plastic and extruding it into the cutting chamber 7. As the molten plastic passes through the fine perforated plate 705, it is extruded into strips and then cut into granules by the rotating cutting blades 704. The granules fall vertically into the discharge section 8. At this time, the circulation pump 13, the vacuum pump 14, and the booster pump 15 are turned on. The circulation pump 13 draws the high-temperature airflow from the cutting chamber 7 into the triangular dividing plate 9, and then blows the falling granules from the triangular dividing plate 9, ensuring that the high-temperature plastic granules do not fall vertically. The particles come into contact with lower-temperature air to gradually cool them down. The suction pump 14 draws in the airflow blown from above the triangular dividing plate 9, forming two airflows above the triangular dividing plate 9. The airflow slows down the falling speed of the particles and cools them down. The booster pump 15 draws in the mixed airflow from the mixing chamber 16, pressurizes it, and sends it into the blowing chamber 11. Then it blows it out into the discharge section 8, forming a strong turbulent airflow. This ensures a secondary cooling effect on the plastic particles and ensures that the airflow can completely disperse the particles, preventing them from accumulating at the inlet of the receiving box 17.

[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A plastic recycling granulator, comprising a base (1), characterized in that: A support frame (2) is fixedly installed on the top of the equipment base (1). A screw conveyor body (3) is mounted on the top of the support frame (2). A cutting chamber (7) is fixedly installed at the output end of the screw conveyor body (3). A feeding hopper (6) is connected to the feeding end of the screw conveyor body (3). A discharge section (8) is connected to the bottom end of the cutting chamber (7). The discharge section (8) is vertically arranged. A triangular dividing plate (9) is fixedly installed inside the discharge section (8). An air blowing hole is provided at the top of the triangular dividing plate (9). Suction chambers (10) are fixedly installed on the left and right sides of the discharge section (8). The suction chambers (10) are positioned above the triangular dividing plate (9), and the outer wall of the suction chamber (10) with the suction hole is located inside the discharge section (8). Air blowing chambers (11) are fixedly installed on the left and right sides of the discharge section (8). The outer wall with the air blowing hole is set in the discharge section (8), and the air blowing chamber (11) is located below the triangular dividing plate (9). The air blowing chamber (11) is wide at the top and narrow at the bottom. The side of the air blowing chamber (11) with the air blowing hole is inclined. The inner wall of the discharge section (8) is fixedly installed with a guide plate (12). The guide plate (12) guides the plastic particles to the two air blowing chambers (11). The bottom end of the discharge section (8) extends into the receiving box (17).

2. The plastic recycling granulator according to claim 1, characterized in that: The outer wall of the auger body (3) is fitted with an electric heating ring (4). There are multiple electric heating rings (4), and they are more densely packed closer to the right end of the auger body (3). The top of the support frame (2) is fitted with a shielding shell (5), which covers the auger body (3) and the electric heating rings (4).

3. A plastic recycling granulator according to claim 1, characterized in that: An air inlet is provided on the left outer wall of the cutting chamber (7). A motor (701) is fixedly installed on the left outer wall of the cutting chamber (7). A rotating shaft (702) is fixedly installed at the output end of the motor (701). A fan blade (703) and a cutting blade (704) are fixedly installed on the outer wall of the rotating shaft (702). A perforated plate (705) is fixedly installed on the right inner wall of the cutting chamber (7). The perforated plate (705) is located at the connection between the cutting chamber (7) and the output end of the auger body (3). The cutting blade (704) is close to the perforated plate (705).

4. A plastic recycling granulator according to claim 1, characterized in that: A circulating pump (13) is installed on the outer wall of the discharge section (8). The air inlet of the circulating pump (13) is connected to a suction pipe (1301). The top end of the suction pipe (1301) is connected to the inside of the cutting chamber (7). The air outlet of the circulating pump (13) is connected to a second air inlet pipe (1302). The second air inlet pipe (1302) is connected to the inside of the triangular material distribution plate (9). The top of the equipment base (1) is fixedly installed. The device is equipped with a vertical plate, on which a vacuum pump (14) and a booster pump (15) are fixedly installed. The air inlet of the vacuum pump (14) is connected to a second suction pipe (1401), and the left end of the second suction pipe (1401) is connected to the air outlet of the suction chamber (10). The air outlet of the booster pump (15) is connected to a third air inlet pipe (1501), and the left end of the third air inlet pipe (1501) is connected to the air inlet of the blowing chamber (11).

5. A plastic recycling granulator according to claim 4, characterized in that: A mixing chamber (16) is provided between the air pump (14) and the booster pump (15). The air outlet of the air pump (14) is connected to the mixing chamber (16) through a pipe, and the air inlet of the booster pump (15) is connected to the mixing chamber (16) through a pipe. An air inlet (1601) is connected to the back of the mixing chamber (16).

6. A plastic recycling granulator according to claim 1, characterized in that: The receiving box (17) has an air vent (1701) on the top and a door (1702) on the back.

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