Crushing equipment for plastic recycling granulation

Abstract

The utility model relates to the field of plastic recovery, in particular to crushing equipment for plastic recovery granulation, which comprises an equipment main body, a cutting cavity is arranged between the inner side of a cutting cylinder and the outer side of a cylinder, the outer wall of the cylinder is fixedly connected with a plurality of rows of cutting blades, and gaps are arranged among the cutting blades. And reverse cutting teeth matched with the gap in size are fixedly connected to the inner wall of the cutting cavity, protrusions are arranged in the middles, close to the coming side of the cutting blade, of the reverse cutting teeth, and a compression mechanism is arranged at the top of the equipment body. According to the plastic film cutting device, when the cutting blade passes through the communicating opening and the surface of the cutting blade is wrapped with a plastic film, the plastic film on the top is separated from the top of the cutting blade when the cutting blade rotates out of the communicating opening and makes contact with the inner wall of the cutting cavity, and the plastic films on the two sides are cut off by the reverse cutting teeth when penetrating through the reverse cutting teeth, so that the plastic films cannot be wound and stacked on one side of the cutting blade.

Description

Technical Field

[0001] The utility model relates to the field of plastic recycling, in particular to a crushing device for plastic recycling and granulation. Background Art

[0002] Plastic recycling refers to the process of recycling and reusing waste plastics using a certain recycling process to turn waste plastics into treasure. The plastics are crushed and then the crushed plastic particles are melted at high temperature to achieve plastic recycling and reuse. At present, waste plastics mainly include plastic films, plastic threads and woven products, foam plastics, plastic packaging boxes and containers, daily plastic products, plastic bags and agricultural mulch films. In order to reduce the environmental pollution caused by waste plastics, waste plastics are usually recycled and reprocessed into plastic products using a granulator. Waste plastics generally need to be crushed before entering the granulator.

[0003] Publication No.: CN217047122U discloses a crushing device for plastic recycling and granulation. In order to solve the problems that the existing crushing device has low crushing efficiency, cannot control the size of crushed plastic fragments, and has poor use effect, a cylinder 2 is arranged at the middle position inside the storage cylinder, and a feed port and a hopper 2 are used to facilitate the transportation of plastic waste to the inside of the storage cylinder, and by starting the frequency conversion motor, the cylinder 2, the connecting rod, the cylinder 1 and the cutting knife are rotated, and the rotating cutting knife is used to cut and crush the plastic waste, and by controlling the speed of the frequency conversion motor, the size of the plastic fragments can be controlled, thereby improving the use effect of the crushing device for plastic recycling and granulation, and then by starting the blower, the blower is used to blow air into the inside of the connecting shell and the connecting pipe, thereby blowing air between the cylinder 1 and the cylinder 2, and the air outlet is used to blow air between the storage cylinder and the cylinder 1, so that the plastic fragments inside the storage cylinder are moved, thereby avoiding the adhesion of the plastic fragments.

[0004] In the above-mentioned prior art, the rotation speed of the cylinder and the cutting knife on the surface of the cylinder is controlled by a variable frequency motor, thereby controlling the size of the plastic fragments after cutting. However, some waste plastics such as plastic films, plastic threads and woven products are light in weight and relatively flexible. When they fall from the feed port, they are easily wrapped and accumulated on the surface of the cutting knife during the rotation of the cylinder, which not only affects the subsequent cutting, but also hinders the rotation of the cylinder. For this reason, we propose a crushing equipment for plastic recycling and granulation. Utility Model Content

[0005] The purpose of the utility model is to provide a crushing device for plastic recycling and granulation to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, a crushing device for plastic recycling and granulation includes a device body, wherein a cutting cylinder and a discharging cylinder are arranged from top to bottom inside the device body, a fan is fixedly installed on the outer wall of the device body at a position corresponding to the cutting cylinder, a variable frequency motor is fixedly installed inside the cutting cylinder, a rotating disk is fixedly connected to the output end of the variable frequency motor, a plurality of connecting rods are fixedly connected to the outer wall of the rotating disk, and the other end of the connecting rod is fixedly connected to the inside of the cylinder;

[0007] A cutting cavity is provided between the inner side of the cutting cylinder and the outer side of the cylinder, a plurality of rows of cutting blades are fixedly connected to the outer wall of the cylinder, gaps are provided between the cutting blades, reverse cutting teeth matching the gap size are fixedly connected to the inner wall of the cutting cavity, a protrusion is provided in the middle part of the reverse cutting teeth close to the cutting blade, and a compression mechanism is provided on the top of the device body.

[0008] Further: the compression mechanism includes a cylinder, the cylinder is fixedly installed on the top of the equipment body, and a feed port is provided on the top of the cylinder.

[0009] Furthermore: a motor is fixedly mounted on the outer wall of the feed port, and a rotating shaft is fixedly connected to the output end of the motor.

[0010] Furthermore: sliders are threadedly connected at both ends of the rotating shaft, and the two sliders are fixedly connected to one end of the two active blocks respectively, and reciprocating screw structures are arranged at both ends of the rotating shaft.

[0011] Furthermore: driven blocks are arranged on the upper and lower sides of the active block, the outer walls of the active block and the driven block are fixedly connected with tooth plates, and the inner side of the cylinder is rotatably connected with a gear between the two tooth plates.

[0012] Furthermore: a communication port adapted to the size of the driven block is provided between the bottom of the cylinder and the cutting cylinder.

[0013] Furthermore: the bottom of the cutting cylinder is connected to the top of the discharging cylinder, and the lower end of the discharging cylinder is provided with a discharging port.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, when the cutting blade passes through the connecting port and is wrapped with a plastic film, the plastic film on the top is separated from the top of the cutting blade when it contacts the inner wall of the cutting chamber after the cutting blade rotates out of the connecting port, and the plastic films on both sides are cut off by the reverse cutting teeth when passing through the reverse cutting teeth, so that the plastic film will not be entangled and accumulated on one side of the cutting blade;

[0016] 2. When the active block moves back and forth horizontally, the tooth plate and the gear mesh to drive the driven block to move in the opposite direction at the same time. When the active block and the driven blocks on both sides of it move, the plastic recyclables can be compressed multiple times when they fall along the feed port, making the cutting of the cylinder more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic elevation diagram of a crushing device for plastic recycling and granulation according to the utility model;

[0018] Figure 2 This is a schematic diagram of the inner part of a crushing device for plastic recycling and granulation according to the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a crushing device for plastic recycling and granulation from another side of the utility model;

[0020] Figure 4 For this utility model Figure 3 A partial enlarged schematic diagram is shown in the figure.

[0021] In the figure: 1. Equipment body; 2. Cutting cylinder; 3. Discharging cylinder; 4. Turntable; 5. Connecting rod; 6. Cylinder; 7. Cutting chamber; 8. Cutting blade; 9. Gap; 10. Reverse cutting teeth; 11. Compression mechanism; 12. Cylinder; 13. Feed inlet; 14. Motor; 15. Rotating shaft; 16. Slider; 17. Active block; 18. Driven block; 19. Tooth plate; 20. Gear; 21. Connecting port. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 , the figure shows a preferred embodiment of the utility model, a crushing device for plastic recycling and granulation, including a device body 1, a cutting cylinder 2 and a discharging cylinder 3 are arranged inside the device body 1 from top to bottom, a fan is fixedly installed on the outer wall of the device body 1 at the corresponding position of the cutting cylinder 2, a variable frequency motor is fixedly installed inside the cutting cylinder 2, a turntable 4 is fixedly connected to the output end of the variable frequency motor, a plurality of connecting rods 5 are fixedly connected to the outer wall of the turntable 4, and the other end of the connecting rod 5 is fixedly connected to the inside of the cylinder 6;

[0024] A cutting chamber 7 is provided between the inner side of the cutting cylinder 2 and the outer side of the cylinder 6, a plurality of rows of cutting blades 8 are fixedly connected to the outer wall of the cylinder 6, gaps 9 are provided between the cutting blades 8, reverse cutting teeth 10 matching the size of the gaps 9 are fixedly connected to the inner wall of the cutting chamber 7, and a bulge is provided in the middle of the reverse cutting teeth 10 near the cutting blades 8, and a compression mechanism 11 is provided on the top of the device body 1; Figure 2 and Figure 3 As shown, the cylinder 6 rotates normally. When the cutting blade 8 passes through the connecting port 21 and is wrapped with a plastic film on its surface, the plastic film on the top is separated from the top of the cutting blade 8 when it contacts the inner wall of the cutting chamber 7 after the cutting blade 8 turns out of the connecting port 21. The plastic films on both sides are cut off by the reverse cutting teeth 10 when passing through the reverse cutting teeth 10. The protrusions on one side of the reverse cutting teeth 10 help the cut plastic film to detach from both sides of the reverse cutting teeth 10. It can be understood that the surface of the reverse cutting teeth 10 is a smooth surface.

[0025] Specifically, the compression mechanism 11 includes a cylinder 12 , which is fixedly mounted on the top of the equipment body 1 . A feed port 13 is provided on the top of the cylinder 12 , and the plastic recyclables are poured in from the feed port 13 .

[0026] A motor 14 is fixedly mounted on the outer wall of the feed port 13 , and a rotating shaft 15 is fixedly connected to the output end of the motor 14 . After the motor 14 is started, the rotating shaft 15 is controlled to rotate.

[0027] It can be understood that the two ends of the rotating shaft 15 are threadedly connected with sliders 16, and the two sliders 16 are respectively fixedly connected to one end of the two active blocks 17. A reciprocating screw structure is provided at both ends of the rotating shaft 15, and through this structure, when the rotating shaft 15 rotates, the active block 17 is pulled by the slider 16 to perform lateral reciprocating motion.

[0028] Specifically, driven blocks 18 are provided on the upper and lower sides of the active block 17, and the outer walls of the active block 17 and the driven block 18 are fixedly connected with tooth plates 19, and the inner side of the cylinder 12 is rotatably connected with a gear 20 between the two tooth plates 19; when the active block 17 moves back and forth laterally, the tooth plate 19 is engaged with the gear 20 to drive the driven block 18 to move in the opposite direction at the same time. When the active block 17 and the driven blocks 18 on both sides of the active block 17 move, the plastic recyclables can be compressed multiple times when they fall along the feed port 13, so that the cutting of the cylinder 6 is more efficient, and it is also convenient for some plastic containers to pass through the connecting port 21 after being compressed.

[0029] A connecting port 21 matching the size of the driven block 18 is provided between the bottom of the cylinder 12 and the cutting cylinder 2 , so that the plastic recyclables can enter the cutting chamber 7 after being compressed.

[0030] The bottom of the cutting cylinder 2 is connected to the top of the discharging cylinder 3 , and the lower end of the discharging cylinder 3 is provided with a discharging port.

[0031] In this embodiment, the plastic recyclables to be crushed are poured into the reverse cutting teeth 10 along the feed inlet 13. After the motor 14 is started, the rotating shaft 15 is controlled to rotate, and the slider 16 pulls the active block 17 to perform a lateral reciprocating motion. When the active block 17 moves lateral reciprocatingly, the driven block 18 is driven to move in the opposite direction at the same time through the meshing of the tooth plate 19 and the gear 20. When the active block 17 and the driven blocks 18 on both sides thereof move, the plastic recyclables can be compressed multiple times when they fall along the feed inlet 13, so that the cutting of the cylinder 6 is more efficient, and it is also convenient for some plastic containers to pass through the connecting port 21 after being compressed;

[0032] In the cutting cylinder 2, the cylinder 6 is rotated by the connecting rod 5 driven by the variable frequency motor. The cylinder 6 rotates normally. When the cutting blade 8 passes through the connecting port 21 and is wrapped with a plastic film on the surface, the plastic film on the top is separated from the top of the cutting blade 8 when it contacts the inner wall of the cutting chamber 7 after the cutting blade 8 turns out of the connecting port 21. The plastic films on both sides are cut off by the reverse cutting teeth 10 when passing through the reverse cutting teeth 10. The protrusions on one side of the reverse cutting teeth 10 help the cut plastic film to detach from the two sides of the reverse cutting teeth 10. Finally, the cut plastic fragments enter the discharge cylinder and accumulate, and can be taken out from the discharge port.

[0033] It should be added that the outer wall of the cylinder 6 is provided with air outlet holes, and the fan of the equipment body 1 draws gas from the outside and blows the plastic on the surface of the cylinder 6 along the air outlet holes to move the plastic on the surface of the cylinder 6 to avoid adhesion.

[0034] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly stipulated and limited, the terms "set", "install", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0036] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A crushing device for plastic recycling and granulation, comprising a device body (1), wherein a cutting cylinder (2) and a discharging cylinder (3) are arranged from top to bottom inside the device body (1), a fan is fixedly installed on the outer wall of the device body (1) at a position corresponding to the cutting cylinder (2), a variable frequency motor is fixedly installed inside the cutting cylinder (2), a rotating disk (4) is fixedly connected to the output end of the variable frequency motor, a plurality of connecting rods (5) are fixedly connected to the outer wall of the rotating disk (4), and the other end of the connecting rod (5) is fixedly connected to the inside of a cylinder (6); Features: A cutting chamber (7) is provided between the inner side of the cutting cylinder (2) and the outer side of the cylinder (6); a plurality of rows of cutting blades (8) are fixedly connected to the outer wall of the cylinder (6); gaps (9) are provided between the cutting blades (8); reverse cutting teeth (10) matching the size of the gaps (9) are fixedly connected to the inner wall of the cutting chamber (7); a protrusion is provided at the middle of the reverse cutting teeth (10) on the side close to the cutting blades (8); and a compression mechanism (11) is provided at the top of the device body (1).

2. A crushing device for plastic recycling and granulation according to claim 1, characterized in that: The compression mechanism (11) comprises a cylinder (12), wherein the cylinder (12) is fixedly mounted on the top of the equipment body (1), and a feed port (13) is provided on the top of the cylinder (12).

3. A crushing device for plastic recycling and granulation according to claim 2, characterized in that: A motor (14) is fixedly mounted on the outer wall of the feed port (13), and a rotating shaft (15) is fixedly connected to the output end of the motor (14).

4. A crushing device for plastic recycling and granulation according to claim 3, characterized in that: Slide blocks (16) are threadedly connected at both ends of the rotating shaft (15), and the two slide blocks (16) are respectively fixedly connected to one end of two active blocks (17). Reciprocating screw structures are arranged at both ends of the rotating shaft (15).

5. A crushing device for plastic recycling and granulation according to claim 4, characterized in that: A driven block (18) is provided on the upper side and the lower side of the active block (17); the outer walls of the active block (17) and the driven block (18) are fixedly connected with a toothed plate (19); and the inner side of the cylinder (12) is rotatably connected with a gear (20) between the two toothed plates (19).

6. A crushing device for plastic recycling and granulation according to claim 2, characterized in that: A communication port (21) matching the size of the driven block (18) is provided between the bottom of the cylinder (12) and the cutting cylinder (2).

7. A crushing device for plastic recycling and granulation according to claim 1, characterized in that: The bottom of the cutting cylinder (2) is connected to the top of the discharging cylinder (3), and the lower end of the discharging cylinder (3) is provided with a discharging port.

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