Sorting-based garbage classification method and device

Patent metadata

Field	Value
Publication number	US-12083560-B2
Application number	US-202117545093-A
Country	US
Kind code	B2
Filing date	Dec 8, 2021
Priority date	Nov 1, 2021
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

A sorting-based garbage classification method and a sorting-based garbage classification device are provided. The method utilizes quantitative features of domestic garbage components and adopts bubble sort algorithm to build a sorting model to sort and classify domestic garbage. The method is more in line with technical requirements of downstream incineration, pyrolysis gasification and so on, and has the features of high fault tolerance rate and high operation efficiency, and is characterized by controllable environmental impact, flexible product form and high energy utilization efficiency in the operation process.

First claim

What is claimed is:

1. A sorting-based garbage classification device, comprising:
a conveying assembly ( 1 ); and a sorting assembly ( 2 ), an identifying assembly ( 3 ) and a processing assembly ( 4 ) sequentially installed above the conveying assembly ( 1 ) from left to right in that order;
wherein the sorting assembly ( 2 ) comprises a fixing frame ( 5 ) and lifting cylinders ( 6 ), a lower end of the fixing frame ( 5 ) is connected to the conveying assembly ( 1 ), and lifting cylinders ( 6 ) are installed on the fixing frame ( 5 ); the lifting cylinders ( 6 ) are distributed in a plurality of groups, expandable and contractable ends of the lifting cylinders ( 6 ) are provided with rotating cylinders ( 7 ) respectively; rotating ends of the rotating cylinders ( 7 ) are provided with S-shaped baffles ( 8 ) respectively, the rotating cylinders ( 7 ) are located below the fixing frame ( 5 ), and a cross section of the fixing frame ( 5 ) is U-shaped;
wherein the identifying assembly ( 3 ) comprises an identifying equipment ( 9 ) and a fixed seat ( 10 ), a lower part of the identifying equipment ( 9 ) is fixedly connected to the fixed seat ( 10 ), and the fixed seat ( 10 ) is connected to the conveying assembly ( 1 ); and
wherein the processing assembly ( 4 ) comprises a crushing box ( 11 ) and electric heating plates ( 12 ), an inner side of the crushing box is connected to the electric heating plates ( 12 ), and the crushing box is connected to the conveying assembly ( 1 );
wherein the device is based on a sorting-based garbage classification method, comprising:
step 1, feature information acquisition, comprising:
collecting domestic garbage components firstly, and then obtaining quantitative feature results of the domestic garbage components, to thereby obtain initial quantitative data of the domestic garbage components;

step 2, information preprocessing, comprising:
preprocessing the initial quantitative data to obtain original hyperspectral data, constructing an information extraction algorithm model, and inputting the original hyperspectral data into the information extraction algorithm model to carry out feature compression on the original hyperspectral data and express the original hyperspectral data by principal components;

step 3, algorithm model optimization, comprising:
optimizing the information extraction algorithm model with parameter indexes, and optimizing the number of the principal components of a feature compression part, and parameters of kernel functions including a linear kernel function, a radial basis kernel function and a polynomial kernel function of support vector classification model to obtain optimum parameter conditions, thereby generating a classification model used for sorting of domestic garbage components according to quantitative feature indexes; and

step 4, garbage components sorting, comprising:
grouping domestic garbage components in an ascending or descending order according to the classification model for subsequent disposal and utilization.

2. The sorting-based garbage classification device according to claim 1 , wherein in the step 2, further comprising:
performing noise reduction and dimension reduction processing on the original hyperspectral data after obtaining the original hyperspectral data.

3. The sorting-based garbage classification device according to claim 1 , wherein in the step 3, the parameter indexes comprise accuracy, precision, recall and F1-measure.

4. The sorting-based garbage classification device according to claim 1 , wherein a cross section of the fixed seat ( 10 ) is consistent with that of the fixing frame ( 5 ), a capture camera ( 13 ) is installed on an inner side of the fixed seat ( 10 ) through a bracket, a capturing end of the capture camera ( 13 ) faces towards the conveying assembly ( 1 ), and the capture camera ( 13 ) is electrically connected to the identifying equipment ( 9 ).

5. The sorting-based garbage classification device according to claim 1 , wherein front and rear sides below the crushing box ( 11 ) are equipped with bearing plates ( 14 ), and the bearing plates ( 14 ) are fixedly connected to the conveying assembly ( 1 ); upper and lower sides of the crushing box ( 11 ) are respectively equipped with a feed port ( 15 ) and a discharge port ( 16 ); two groups of crushing rollers ( 17 ) are oppositely arranged in the crushing box ( 11 ); and the two groups of crushing rollers ( 17 ) are rotatably connected to the crushing box ( 11 ) and driven by motors.

6. The sorting-based garbage classification device according to claim 5 , wherein the conveying assembly ( 1 ) comprises a bearing frame ( 18 ) and a conveyor belt ( 19 ), and the bearing frame ( 18 ) is connected to the bearing plates ( 14 ), the fixed seat ( 10 ) and the fixing frame ( 5 ); an inner side of the bearing frame ( 18 ) is provided with the conveyor belt ( 19 ), and an inner side of the conveyor belt ( 19 ) is provided with multiple groups of drive rollers, and the multiple groups of drive rollers are driven by a motor; both ends of the multiple groups of drive rollers are rotatably connected to the bearing frame ( 18 ) through bearings.

7. The sorting-based garbage classification device according to claim 4 , wherein left and right sides of the capture camera ( 13 ) are respectively equipped with light supplement lamps ( 20 ) on the fixed seat ( 10 ), irradiation ends of the light supplement lamps ( 20 ) face a capturing area of the capture camera ( 13 ), sides of the light supplement lamps ( 20 ) away from the capture camera ( 13 ) are respectively equipped with shading plates ( 21 ), the shading plates ( 21 ) are connected to the fixed seat ( 10 ), and a height of each of the shading plates ( 21 ) is less than that of the fixed seat ( 10 ).

8. The sorting-based garbage classification device according to claim 5 , wherein a side of each of the electric heating plates ( 12 ) close to the crushing rollers ( 17 ) is provided with a protective plate ( 22 ) being thermally conductive, a triangular plate ( 23 ) is arranged below the crushing rollers ( 17 ), front and rear ends of the triangular plate ( 23 ) are connected to the crushing box ( 11 ), a cross section of the triangular plate ( 23 ) is an isosceles triangle, and a tip of the triangular plate ( 23 ) faces upwards.

9. The sorting-based garbage classification device according to claim 8 , wherein the triangular plate ( 23 ) is located just above the discharge port ( 16 ), and the discharge port ( 16 ) is located above the conveying assembly ( 1 ); an inner side of the triangular plate ( 23 ) is provided with electric heating tubes ( 24 ), and the electric heating tubes ( 24 ) are electrically connected to the electric heating plates ( 12 ).

10. The sorting-based garbage classification device according to claim 1 , wherein the lifting cylinders ( 6 ) are staggeredly distributed.

11. The sorting-based garbage classification device according to claim 1 , wherein an outer side of the crushing box ( 11 ) is sleeved with a heatproof sleeve ( 25 ), and a lower part of the crushing box ( 11 ) is funnel-shaped.

Assignees

• Univ Tianjin Commerce
• Univ Tianjin

Inventors

• Chen Guanyi
• Tao Junyu
• Liang Rui
• Yan Beibei
• Sun Yunan
• Cheng Zhanjun
• Li Jian
• Mu Lan
• Gu Yude
• Hao Xiaoling

Classifications

• B07C5/02

  Measures preceding sorting, e.g. arranging articles in a stream orientating {(sorting and transport of caps B67B3/06)} · CPC title

• H04N7/18

  Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast · CPC title

• B07C2501/0054

  Sorting of waste or refuse · CPC title

• B02C23/10

  with separator arranged in discharge path of crushing or disintegrating zone · CPC title

• B02C23/08

  Separating or sorting of material, associated with crushing or disintegrating (B02C23/18 takes precedence {; beater mills combined with sifting devices B02C13/13, B02C13/14; for tumbling mills B02C17/1835}) · CPC title