A plastic garbage color sorting machine

Abstract

This utility model discloses a color sorting machine for plastic waste, including a feeding device and a belt conveyor. The feeding device includes a feeding hopper, with a feeding plate obliquely installed below the feeding hopper, and a shut-off valve between the feeding plate and the feeding hopper. A chute is provided below the feeding plate, and a receiving cavity is provided at the end of the chute away from the feeding hopper. A discharge port is provided on the other side of the receiving cavity, and the discharge port is divided into a first cavity opening and a second cavity opening. The belt conveyor consists of a first conveyor belt and a second conveying bag, which are arranged in a stepped manner, corresponding to the first cavity opening and the second cavity opening, respectively. Plastic waste undergoes primary color sorting within the receiving cavity and secondary color sorting on the first conveyor belt or the second conveying bag, thereby improving color sorting efficiency.

Description

Technical Field

[0001] This utility model relates to waste treatment technology, and in particular to a color sorting machine for plastic waste. Background Technology

[0002] Color sorting technology is a key step in waste resource recovery, aiming to achieve refined waste classification through color differences and improve the purity and recycling rate of recyclables.

[0003] Chinese patent application CN2533100Y, for example, discloses a white waste air separation and plastic collection system. In this patent, a sealed cover is installed between the discharge port of the waste sorting screen and the inlet of the collection box. A belt conveyor is installed inside the sealed cover, with one end aligned with the discharge port of the sorting screen and the other end extending into the inlet of the collection box. The sealed cover and belt conveyor are inclined upwards along the feeding direction. A blower is installed outside the sealed cover, with its blower and exhaust ports extending into the sealed cover. A solid waste discharge port is located at the lower end of the sealed cover. The lower side wall of the collection box has an openable and closable door. This invention allows the white waste portion from the waste screen to be collected via air separation using a conveyor belt. While it can separate lightweight waste, it cannot achieve fine color-based sorting.

[0004] Another patent, CN107262394A, describes a color sorting device for construction waste. In this patent, a light source, a high-speed camera, and a nozzle are fixed on the inner wall of the feed inlet of the main unit. The sorting is achieved through the light source, the high-speed camera, and the nozzle. However, among the plastic waste, there are dark-colored plastic waste and light-colored plastic waste. Due to the influence of the light source and other factors, the color sorting accuracy is not high.

[0005] In view of the above, the present invention makes further improvements to the prior art. Utility Model Content

[0006] To address the shortcomings of the existing technology, this invention proposes a plastic waste color sorting machine that improves color sorting accuracy through multiple batch color sorting.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A color sorting machine for plastic waste, characterized in that it includes a feeding device and a belt conveyor.

[0009] The feeding device includes a feeding hopper, a feeding plate installed obliquely below the feeding hopper, and a shut-off valve installed between the feeding plate and the feeding hopper.

[0010] A chute is provided below the feed plate, and a receiving cavity is provided at the end of the chute away from the feed hopper. A discharge port is provided on the other side of the receiving cavity, and the discharge port is divided into a first cavity outlet and a second cavity outlet.

[0011] The belt conveyor consists of a first conveyor belt and a second conveyor bag. The first conveyor belt and the second conveyor bag are arranged in a stepped manner, corresponding to the first cavity opening and the second cavity opening, respectively.

[0012] The plastic waste undergoes a first color sorting within the containment cavity and a second color sorting on the first conveyor belt or the second conveyor bag.

[0013] In this invention, a corrugated plate is provided inside the chute, and a vibrator can also be provided at the bottom of the chute.

[0014] In this invention, a CCD camera and an air nozzle are disposed inside the receiving cavity.

[0015] In this invention, a ring-shaped LED light source group is also provided inside the receiving cavity.

[0016] In this invention, the jet nozzle achieves ±45° dynamic deflection via a universal joint connector.

[0017] In this invention, the first conveyor belt or the second conveyor bag has a connecting motor drive shaft and a screw assembly for adjusting the length of the conveyor belt.

[0018] In this invention, CCD cameras and jet nozzles are provided on both sides of the first conveyor belt and the second conveyor bag.

[0019] The plastic waste color sorting machine of this utility model has the following beneficial effects:

[0020] 1. The corrugated plate and vibrator (bottom of the chute) in the feeding device work together to effectively disperse plastic particles, avoid local accumulation or blockage, ensure that the material enters the sorting area continuously and stably, and reduce the frequency of downtime maintenance.

[0021] 2. The shut-off valve can precisely adjust the material feeding speed to adapt to different processing volume requirements and avoid the decrease in sorting accuracy due to excessive flow.

[0022] 3. The ring-shaped LED light source provides 360° shadowless and uniform illumination. Combined with a CCD camera to capture the spectral characteristics of the plastic particle surface, it can accurately distinguish between dark-colored (such as red and black) and light-colored (such as white and transparent) waste, reducing the identification error rate.

[0023] 4. The jet nozzle has a ±45° dynamic deflection (driven by a universal joint connector) and is combined with graded airflow control. It can adaptively adjust the airflow angle and intensity according to the particle weight and position. Dark particles are blown into the first chamber by strong airflow, while light particles are guided into the second chamber by weak airflow, thus improving the sorting accuracy.

[0024] 5. Through the stepped double conveyor belt design (first conveyor belt and second conveyor belt), the material after the first sorting can be further refined by secondary sorting. The CCD cameras and air nozzles added on both sides further remove mixed particles. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the plastic waste color sorting machine of this utility model;

[0026] Figure 2 This is a partial structural diagram of the plastic waste color sorting machine of this utility model;

[0027] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0028] Figure 4 This is a schematic diagram of the belt conveyor of this utility model;

[0029] Figure 5 This is a schematic diagram of the belt conveyor of this utility model from another angle.

[0030] The reference numerals in the attached figures are as follows:

[0031] Material feeding device 10, feeding hopper 101, feeding plate 102, shut-off valve 103, chute 104, receiving cavity 105, discharge port 10, first cavity port 106A, second cavity port 106B.

[0032] Belt conveyor 20, first conveyor belt 21, second conveyor bag 22, drive shaft 23, screw assembly 24, CCD camera 30, jet nozzle 31. 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 to 5 As shown, this utility model proposes a plastic waste color sorting machine, which includes a feeding device 10 and a belt conveyor 20.

[0035] See again Figures 2 to 4 As shown, the feeding device 10 includes a feeding bin 101, a feeding plate 102 is installed obliquely below the feeding bin 101, and a shut-off valve 103 is provided between the feeding plate 102 and the feeding bin 101.

[0036] A chute 104 is provided below the feed plate 102, and a corrugated plate is provided inside the chute 104. A receiving cavity 105 is provided at one end of the chute 104 away from the feeding bin 101, and a discharge port 106 is provided on the other side of the receiving cavity 105. The discharge port 106 is divided into a first cavity 106A and a second cavity 106B.

[0037] In this embodiment, plastic waste particles are poured into the feeding hopper 101, and the feeding speed of the plastic waste particles is adjusted by controlling the shut-off valve 103. The plastic waste particles then pass through the chute 104, where corrugated plates are used to prevent local accumulation or blockage of plastic waste particles, ensuring subsequent sorting.

[0038] Preferably, a vibrator can also be installed at the bottom of the chute 104, and the vibration frequency or amplitude can be adjusted by the vibrator to flexibly control the falling speed of the material.

[0039] In this embodiment, please refer again. Figure 3 As shown, the receiving cavity 105 is equipped with a CCD camera 30 and an air jet nozzle 31. Plastic waste particles fall into the chute 104, and the CCD camera 30 captures their spectral images. The control module analyzes these images and identifies the color depth of the plastic waste particles. For example, dark colors such as red and black; and light colors such as white and transparent. Based on the classification results, the solenoid valve at the corresponding position in the air jet nozzle 31 opens, spraying a directional airflow to blow the waste into a designated channel. For example, dark plastics are blown into the first cavity 106A by a strong airflow, while light red plastics fall into the second cavity 106B by a weak airflow.

[0040] Furthermore, an annular LED light source group is also provided inside the receiving cavity 105, which provides 360° illumination to eliminate shadow interference inside the receiving cavity 105.

[0041] Preferably, the jet nozzle 31 achieves ±45° dynamic deflection via a universal joint connector, and is driven by a stepper motor to deflect the air.

[0042] In this embodiment, plastic waste particles discharged from the discharge port 106 are sequentially and intermittently fed into the belt conveyor 20 for secondary color sorting. The belt conveyor 20 consists of a first conveyor belt 21 and a second conveyor bag 22. The first conveyor belt 21 and the second conveyor bag 22 are arranged in a stepped manner, corresponding to the first cavity 106A and the second cavity 106B, respectively.

[0043] In this embodiment, the first conveyor belt 21 and the second conveyor bag 22 have the same structure, differing only in length. The first conveyor belt 21 or the second conveyor bag 22 has a motor drive shaft 23 connected to a screw assembly 24 for adjusting the conveyor belt length.

[0044] Furthermore, CCD cameras 30 and nozzles 31 are provided on both sides of the first conveyor belt 21 and the second conveyor bag 22. After the above-mentioned sorting by light and dark colors, the CCD cameras 30 and nozzles 31 on the sides of the first conveyor belt 21 and the second conveyor bag 22 perform fine sorting, thereby improving the sorting accuracy.

[0045] The above embodiments merely illustrate specific implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A color sorting machine for plastic waste, characterized in that, Includes a feeding device (10) and a belt conveyor (20). The feeding device (10) includes a feeding bin (101), a feeding plate (102) is installed obliquely below the feeding bin (101), and a shut-off valve (103) is provided between the feeding plate (102) and the feeding bin (101). A chute (104) is provided below the feed plate (102). A receiving cavity (105) is provided at one end of the chute (104) away from the feed bin (101). A discharge port (106) is provided on the other side of the receiving cavity (105). The discharge port (106) is divided into a first cavity (106A) and a second cavity (106B). The belt conveyor (20) is divided into a first conveyor belt (21) and a second conveyor bag (22). The first conveyor belt (21) and the second conveyor bag (22) are distributed in a stepped manner, corresponding to the first cavity opening (106A) and the second cavity opening (106B) respectively. The plastic waste undergoes a first color sorting in the containment cavity (105) and a second color sorting on the first conveyor belt (21) or the second conveyor bag (22).

2. The plastic waste color sorting machine according to claim 1, characterized in that, The chute (104) is equipped with a corrugated plate inside, and a vibrator can also be installed at the bottom of the chute (104).

3. The plastic waste color sorting machine according to claim 1, characterized in that, The cavity (105) is equipped with a CCD camera (30) and a jet nozzle (31).

4. The plastic waste color sorting machine according to claim 3, characterized in that, The cavity (105) is also equipped with a ring-shaped LED light source group.

5. The plastic waste color sorting machine according to claim 4, characterized in that, The jet nozzle (31) achieves ±45° dynamic deflection via a universal joint connector.

6. The plastic waste color sorting machine according to claim 1, characterized in that, The first conveyor belt (21) or the second conveyor bag (22) has a motor drive shaft (23) and a screw assembly (24) for adjusting the length of the conveyor belt.

7. The plastic waste color sorting machine according to claim 6, characterized in that, CCD cameras (30) and jet nozzles (31) are provided on both sides of the first conveyor belt (21) and the second conveyor bag (22).

Images