Waste plastic separating method and system based on image recognition

An image recognition and separation system technology, which is applied in the field of waste plastic separation and system based on image recognition, can solve the problems of dirty surface of waste plastic, low efficiency, and inability to reflect the nature of waste plastic material.

Inactive Publication Date: 2015-05-20
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is too difficult for the photoelectric separator to be used to separate waste plastics from the garbage sieve. First of all, waste plastics are entangled with debris such as paper and cloth. Even if the machine can distinguish from the material, the actuator is difficult to separate. The second is that the colors are different, and it is difficult to distinguish them by color; the third is that the surface of waste plastics is dirty, so that neither reflected light nor penetrating light can reflect the material nature of waste plastics
Based on this, the use of existing photoelectric separators to separate waste plastics from garbage screens not only requires a large investment, but also requires multiple units to be used in conjunction to achieve it. It is also inefficient and cannot achieve the expected separation purpose.

Method used

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  • Waste plastic separating method and system based on image recognition
  • Waste plastic separating method and system based on image recognition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Embodiment 1: Different types of waste plastics separated from oversize, such as PE, PP, PS, PVC, etc.;

[0071] exist image 3 In the shown embodiment 1, the sorting system needs to follow the implementation requirements of the sorting system, keep all kinds of input and output signals smooth and effective, and the software and hardware run normally. The goal of sorting is to separate the mixed waste plastics in the garbage sieve and classify them into different waste plastics at the same time. according to figure 2 Steps 1-6 are shown for sorting, and each step is described as follows:

[0072] Step 1: Preparation before feeding. Sieve the garbage at a certain speed, such as 1m 3 The processing capacity per minute enters the hopper, shakes the hopper to loosen and evenly screen the garbage;

[0073]Step 2: Through a narrow and long outlet, the waste on the screen is evenly diluted on the crawler. The aspect ratio of the outlet should be kept at a certain value ...

Embodiment 2

[0098] Example 2: Separation of mixed waste plastics from garbage oversize.

[0099] exist Figure 4 In the shown embodiment 2, the sorting system needs to follow the implementation requirements of the sorting system, keep all kinds of input and output signals smooth and effective, and the software and hardware run normally. The goal of sorting is to separate the mixed waste plastics in the garbage sieve. according to image 3 Steps 1-6 are shown for sorting, and each step is described as follows:

[0100] Step 1: Preparation before feeding. Sieve the garbage at a certain speed, such as 1.5 m 3 The processing capacity per minute enters the hopper, shakes the hopper to loosen and evenly screen the garbage;

[0101] Step 2: Through a narrow and long outlet, the waste on the screen is evenly diluted on the crawler. The aspect ratio of the outlet should be kept at a certain value to facilitate manipulator operation, for example, 10:1—15:1, and the track width should be selec...

Embodiment 3

[0123] Example 3: Separation of sundries from mixed waste plastics.

[0124] exist Figure 5 In the shown embodiment 3, the sorting system needs to follow the implementation requirements of the sorting system, keep all kinds of input and output signals smooth and effective, and the software and hardware run normally. The goal of sorting is to separate the impurities in mixed waste plastics and improve the purity of mixed waste plastics. according to image 3 Steps 1-6 are shown for sorting, and each step is described as follows:

[0125] Step 1: Preparation before feeding. Mix the waste plastic at a certain speed, such as 1.0 m 3 The processing capacity per minute enters the hopper, shakes the hopper to loosen and evenly mix the waste plastics;

[0126] Step 2: Through a narrow and long outlet, the mixed waste plastic flow is evenly spread on the track. The aspect ratio of the exit should be kept at a certain value to facilitate manipulator operation, such as 8:1—13:1, ...

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PUM

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Abstract

The invention relates to a waste plastic separating method and system based on image recognition. A current object needing to be separated is judged based on the surface texture and the reflected light spectrum distribution, and the method and the system are applied to the production process of sorting plastics from garbage oversize products and used for removing impurity components from the waste plastics and sorting different kinds of waste plastics out of the mixed waste plastics. The system comprises an inlet device of a sorted object, a sorting system and a sorted product outlet device, wherein the sorting system is composed of an image recognition subsystem and a mechanical arm operation subsystem. According to the system, the purposes of sorting the waste plastics from the garbage oversize products in which various waste is mixed and separating sundries from the waste plastics are achieved; or the purpose of separating single waste plastics from the mixed waste plastics is achieved, and the sorting efficiency of the waste plastics reaches 90 percent.

Description

Technical field [0001] The present invention involves a waste plastic separation method and system based on image recognition. Background technique [0002] With the rapid development of the modern synthetic resin industry, the application of plastic products is becoming more and more widely used.While plastic products are convenient to people, a large amount of waste plastic also causes serious pollution to the environment. The use cycle of plastic is very short.It cannot be used after 1 to 2 years.In the past few decades, waste plastic has been part of the urban solid waste (MSW), and waste plastics in MSWs in developed countries account for 4%to 10%(WT) or 10%~ 20%(VOL). [0003] In essence, the waste plastic is essentially re -aggregated by oil, propane, and styrene and other hydrocarbons and other hydrocarbons.In 2008, the domestic plastic recycling volume was 9 million tons, and the recovery rate was about 30%(Hu Shouren. my country's waste plastic recovery and import statu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B13/00
Inventor 王海陈德珍尹丽洁
Owner TONGJI UNIV
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