PET (Polyethylene Terephthalate) slice recycling and screening device

Abstract

The utility model relates to the technical field of PET (Polyethylene Terephthalate) slice production and processing, in particular to a PET slice recycling and screening device, which solves the technical problem that PET slices are adhered to each other or adhered to a screen in the vibratory screening process when the PET slices are screened by the existing PET slice recycling and screening device through vibration, and comprises a rack, a screen box is installed above the machine frame, a screen is arranged in the screen box, an air injection assembly is arranged above the screen, the air injection assembly comprises a ventilation pipe and an air nozzle, the air injection assembly is used for guiding air flow into the screen box, in the process of screening PET slices, an air pump works, the air flow is conveyed to the ventilation pipe through an air conveying pipe, and the ventilation pipe is communicated with the air nozzle. The air nozzle connected with the ventilation pipe ejects air flow out, the air nozzle performs horizontal reciprocating motion while spraying air, so that the purpose of blowing the PET slices is achieved, the PET slices are kept in a relatively separated state in the screening process through proper air flow blowing, and adhesion of the PET slices is prevented.

Description

Technical Field

[0001] This utility model relates to the field of PET chip production and processing technology, specifically a PET chip recycling and screening device. Background Technology

[0002] PET chips refer to sheet-like materials formed from processed polyethylene terephthalate (PET). PET chips are an important raw material for the production of PET fibers (such as polyester fibers), PET films, and various PET plastic products. PET chips from different sources may vary in quality. Screening can remove impurities and low-quality components, ensuring that recycled materials have good performance to meet subsequent reuse requirements.

[0003] However, existing PET chip recycling and screening devices use vibration to screen PET chips. Because PET chips may have a certain degree of stickiness, they may stick together or adhere to the screen during the vibration screening process. This adhesion of PET chips will hinder the chips from passing through the screen smoothly, resulting in a slower screening speed and a longer screening time. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a PET chip recycling and screening device that solves the problem that existing PET chip recycling and screening devices cause PET chips to stick together or adhere to the screen during the vibration screening process. This device can prevent sticking by introducing appropriate airflow to keep the PET chips relatively separated during the screening process. At the same time, the cover plate can block and protect the opening at the top of the screen box, reducing the possibility of external impurities entering the screen box.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a PET chip recycling and screening device, including a frame, a screen box installed on the top of the frame, a screen mesh installed inside the screen box, and an air jet assembly installed above the screen mesh. The air jet assembly includes an air pipe and an air nozzle, and the air jet assembly is used to introduce airflow into the screen box.

[0008] A slider is fitted onto the outer surface of the ventilator, and a drive assembly is connected to the slider to drive its movement.

[0009] The above technical solution involves placing PET chips into a sieve box, where the PET chips are sieved by the continuous vibration of the sieve. During this process, airflow is introduced into the sieve box through an air jet assembly, and the appropriate airflow keeps the PET chips relatively separated during the sieving process, preventing them from sticking together.

[0010] Furthermore, the air nozzles are evenly distributed on the outer surface of the air pipe, and the air pipe is symmetrically distributed about the longitudinal centerline of the screen box.

[0011] The above technical solution increases the number of air nozzles that can be blown, thereby improving the efficiency of preventing PET slices from sticking together by blowing air.

[0012] Furthermore, one end of the vent pipe is connected to an air supply pipe, and the other end of the air supply pipe is connected to an air pump, which is installed on one side of the frame.

[0013] With the above technical solution, after the air pump is working, the airflow is delivered to the ventilation pipe through the air supply pipe, and the air nozzle connected to the ventilation pipe sprays out the airflow, thereby achieving the purpose of blowing the PET slices.

[0014] Furthermore, the drive assembly includes a motor and a reciprocating lead screw. Load-bearing plates are connected to both sides of the frame. The motor is mounted on one side of the load-bearing plate. The reciprocating lead screw is threadedly connected to the slider. A guide shaft runs through the inside of the slider.

[0015] With the above technical solution, after the motor runs, it can drive the reciprocating screw to rotate. The reciprocating screw drives the slider to move horizontally back and forth. The slider drives the air pipe to move synchronously, so that the air nozzle sprays air evenly into the screen box.

[0016] Furthermore, a gear is fixedly connected to one end of the vent pipe, and a rack is meshed with one side of the gear, with the rack fixedly connected to the load-bearing plate.

[0017] With the above technical solution, toothed blocks are evenly distributed on one side of the rack, and there are gaps between the toothed blocks. When the slider drives the gear to move horizontally through the air pipe, after the rack and gear mesh, the gear will drive the air pipe to rotate under the action of the rack, thereby adjusting the air jet angle of the air nozzle, so that the airflow blows the PET slice from different directions.

[0018] Furthermore, a protective cover connects the two load-bearing plates, and the slider is connected to the protective cover by a sliding connection.

[0019] With the above technical solution, the reciprocating lead screw, slider, guide shaft, gear and rack are all located inside the protective cover, and the slider can protect them to prevent them from being damaged.

[0020] Furthermore, a connecting block is fixedly connected to the upper surface of the slider, and a cover plate is fixedly connected to the upper end of the connecting block.

[0021] With the above technical solution, the slider is connected to the cover plate through the connecting block, which makes it easier for the slider to drive the cover plate to move synchronously.

[0022] Furthermore, the sum of the widths of the two cover plates is greater than the width of the sieve box, and the side view of the cover plates shows a "V" shaped structure.

[0023] Through the above technical solution, the cover plate can intermittently open and close the opening above the screen box through reciprocating motion. When the opening above the screen box is open, the staff can add PET chips into the screen box, while closing the opening above the screen box helps to reduce the possibility of external impurities entering the screen box.

[0024] Compared with the prior art, the present invention provides a PET chip recycling and screening device, which has the following beneficial effects:

[0025] In this invention, during the sieving process of PET chips, an air pump operates, delivering airflow to the ventilation pipe via an air supply pipe. The air nozzle connected to the ventilation pipe then sprays the airflow, thereby achieving the purpose of blowing the PET chips. Through appropriate airflow blowing, the PET chips are kept relatively separated during the sieving process, thus preventing the PET chips from sticking together. Furthermore, during the movement of the slider, the ventilation pipe and the cover plate move synchronously, causing the air nozzle to perform horizontal reciprocating motion while simultaneously spraying air, thereby uniformly spraying air into the sieve box. The reciprocating motion of the cover plate allows for intermittent opening and closing of the opening at the top of the sieve box, which not only facilitates the addition of PET chips to the sieve box by the operator but also helps reduce the possibility of external impurities entering the sieve box. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a structural schematic diagram of the present invention from another perspective;

[0028] Figure 3 This is a schematic diagram of the connection structure between the load-bearing plate and the protective cover in this utility model;

[0029] Figure 4 This is a schematic diagram of the connection structure between the vent pipe and the gas delivery pipe in this utility model;

[0030] Figure 5 This is a schematic diagram of the connection structure between the vent pipe and the gear in this utility model;

[0031] Figure 6 This is a schematic diagram of the cover plate in this utility model.

[0032] The components include: 1. Frame; 2. Screen box; 3. Screen mesh; 4. Load-bearing plate; 5. Motor; 6. Reciprocating lead screw; 7. Slider; 8. Guide shaft; 9. Vent pipe; 10. Air nozzle; 11. Air supply pipe; 12. Air pump; 13. Gear; 14. Rack; 15. Protective cover; 16. Connecting block; 17. Cover plate. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1-4 This utility model provides a technical solution: a PET chip recycling and screening device, including a frame 1, a screen box 2 installed above the frame 1, a screen mesh 3 inside the screen box 2, and an air jet assembly above the screen mesh 3. The air jet assembly includes an air pipe 9 and an air nozzle 10. The air jet assembly is used to introduce airflow into the screen box 2. The air nozzles 10 are evenly distributed on the outer surface of the air pipe 9. The air pipe 9 is symmetrically distributed about the longitudinal center line of the screen box 2. One end of the air pipe 9 is connected to an air supply pipe 11, and the other end of the air supply pipe 11 is connected to an air pump 12. The air pump 12 is installed on one side of the frame 1.

[0035] It is worth mentioning that: when PET slices are placed in the sieve box 2, the PET slices can be screened by the continuous vibration of the sieve 3. During this process, the air pump 12 works, and the air supply pipe 11 delivers airflow to the air pipe 9. The air nozzle 10 connected to the air pipe 9 sprays out the airflow, thereby achieving the purpose of blowing the PET slices. By blowing the appropriate airflow, the PET slices are kept in a relatively separated state during the screening process, thereby preventing the PET slices from sticking together.

[0036] Please see Figures 1-5 A slider 7 is sleeved on the outer surface of the vent pipe 9. The slider 7 is connected to a drive assembly, which is used to drive the slider 7 to move. The drive assembly includes a motor 5 and a reciprocating screw 6. The two sides of the frame 1 are respectively connected to a load-bearing plate 4. The motor 5 is installed on one side of the load-bearing plate 4. The reciprocating screw 6 is threadedly connected to the slider 7. A guide shaft 8 passes through the inside of the slider 7.

[0037] The principle that can uniformly spray air into the screen box 2 is as follows: After the motor 5 runs, it can drive the reciprocating screw 6 to rotate. The reciprocating screw 6 drives the slider 7 to move horizontally back and forth through rotation. The slider 7 drives the air pipe 9 to move synchronously, so that the air nozzle 10 moves horizontally back and forth while spraying air, thereby uniformly spraying air into the screen box 2.

[0038] Please see Figures 1-5 One end of the ventilation pipe 9 is fixedly connected to a gear 13, and a rack 14 is meshed with one side of the gear 13. The rack 14 is fixedly connected to the load-bearing plate 4.

[0039] It is worth mentioning that: the rack 14 has toothed blocks evenly distributed on one side, and there are gaps between the toothed blocks. When the slider 7 drives the gear 13 to move horizontally through the air pipe 9, after the rack 14 and the gear 13 mesh, the gear 13 will drive the air pipe 9 to rotate under the action of the rack 14, thereby adjusting the jet angle of the air nozzle 10, so that the airflow blows the PET slice from different directions.

[0040] Please see Figures 1-3 A protective cover 15 is connected between the two load-bearing plates 4, and the slider 7 is connected to the protective cover 15 by a sliding connection.

[0041] The function of the protective cover 15 is as follows: the reciprocating lead screw 6, slider 7, guide shaft 8, gear 13 and rack 14 are all located inside the protective cover 15, and they can be protected by the slider 7 to avoid damage.

[0042] Please see Figures 1-6 A connecting block 16 is fixedly connected to the upper surface of the slider 7, and a cover plate 17 is fixedly connected to the upper end of the connecting block 16. The sum of the widths of the two cover plates 17 is greater than the width of the sieve box 2. The cover plate 17 has a "V" shaped structure when viewed from the side.

[0043] It should be noted that during the movement of slider 7, cover plate 17 will move synchronously. Cover plate 17 can intermittently open and close the opening above screen box 2 through reciprocating motion. When the opening above screen box 2 is open, the staff can add PET slices into the screen box 2. When the opening above screen box 2 is closed, it helps to reduce the possibility of external impurities entering the screen box 2.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PET chip recycling screening device comprising a frame (1), characterized in that: The upper part of the frame (1) is provided with a screen box (2), the inside of the screen box (2) is provided with a screen (3), the upper part of the screen (3) is provided with a jet assembly, the jet assembly comprises a vent pipe (9) and a gas nozzle (10), and the jet assembly is used for introducing airflow into the inside of the screen box (2). The outer surface of the vent pipe (9) is sleeved with a sliding block (7), the sliding block (7) is connected with a driving assembly, and the driving assembly is used for driving the sliding block (7) to move.

2. The PET chip recycling screening device according to claim 1, characterized in that: The gas nozzle (10) is equidistantly distributed on the outer surface of the vent pipe (9), and the vent pipe (9) is symmetrically distributed about the longitudinal center line of the screen box (2).

3. The PET chip recycling screening device according to claim 1, characterized in that: One end of the vent pipe (9) is connected with a gas conveying pipe (11), the other end of the gas conveying pipe (11) is connected with a gas pump (12), and the gas pump (12) is installed on one side of the frame (1).

4. The PET chip recycling screening device according to claim 1, characterized in that: The driving assembly comprises a motor (5) and a reciprocating screw rod (6), both sides of the frame (1) are respectively connected with a bearing plate (4), the motor (5) is installed on one side of the bearing plate (4), the reciprocating screw rod (6) is threadedly connected with the sliding block (7), and the inside of the sliding block (7) penetrates a guide shaft (8).

5. The PET chip recycling screening device according to claim 1, characterized in that: One end of the vent pipe (9) is fixedly connected with a gear (13), one side of the gear (13) is engagedly connected with a rack (14), and the rack (14) is fixedly connected with the bearing plate (4).

6. The PET chip recycling screening device according to claim 4, characterized in that: The two bearing plates (4) are connected with a protective cover (15), and the sliding block (7) and the protective cover (15) are connected in a sliding mode.

7. The PET chip recycling screening device according to claim 1, characterized in that: The upper surface of the sliding block (7) is fixedly connected with a connecting block (16), and the upper end of the connecting block (16) is fixedly connected with a cover plate (17).

8. A PET chip recycling screening device according to claim 7, characterized in that: The sum of the widths of the two cover plates (17) is greater than the width of the screen box (2), and the cover plates (17) are in a "V" shape in the side view.

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