Coal Gangue Sorting Device

Abstract

The present invention provides a coal gangue sorting device, comprising: a frame (10), a conveying device (20), a marking device (30), an image recognition device (40), a sorting device (50) and a control device; the marking device (30), the image recognition device (40) and the sorting device (50) are all arranged on the frame (10) and are all located above the conveying device (20); the marking device (30) is located upstream of the conveying device (20); the image recognition device (40) is located downstream of the marking device (30); the sorting device (50) is located downstream of the image recognition device (40), and is used for sorting coal gangue. Because the raw coal on the conveying device is first spread by the marking device before being recognized by the image recognition device, the raw coal on the conveying device is flattened and uniformed, thereby facilitating recognition by the image recognition device, and avoiding the problem of difficulty in recognition or sorting due to excessive height of the piled raw coal or agglomeration of the raw coal.

Description

Technical Field

[0001] The invention relates to the field of coal mining, and in particular to a coal gangue identification and sorting device. Background Art

[0002] The raw coal directly mined from coal mines contains a lot of gangue, which contains a lot of heavy metals and affects the calorific value of coal, causing serious pollution to the environment during the combustion process. Only by separating coal and gangue can they play their respective roles. As an important part of the coal industry, gangue sorting can improve coal quality, save energy and reduce consumption, and make rational use of resources.

[0003] The sorting of coal gangue mainly includes two processes: identification and sorting. In the process of raw coal sorting, the conveying volume of raw coal is usually unstable, sometimes the conveying volume is large, sometimes the conveying volume is small, and the size of the medium coal blocks and coal gangue of the raw coal is also uneven. When the conveying volume increases or there are large coal blocks, it is difficult to identify the coal gangue, which affects the sorting work.

[0004] In order to solve the problem of difficult identification in the harsh environment of coal gangue sorting site, it is urgent to improve the existing sorting equipment to achieve fast and accurate identification and sorting. Summary of the invention

[0005] The purpose of the present invention is to provide a coal gangue sorting device to solve the problem that coal gangue is difficult to identify in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides a coal gangue sorting device, comprising: a frame, a conveying device, a marking device, an image recognition device, a sorting device and a control device;

[0007] The marking device, the image recognition device and the sorting device are all arranged on the frame and are all located above the conveying device;

[0008] The marking device is located upstream of the conveying device and is used to spread the raw coal on the conveying device;

[0009] The image recognition device is located downstream of the marking device and is used to identify gangue in the raw coal;

[0010] The sorting device is located downstream of the image recognition device and is used to sort the gangue recognized by the image recognition device from the conveying device;

[0011] The control device is electrically connected to the conveying device, the image recognition device and the sorting device to control the operation of the conveying device and control the operation of the sorting device according to the data recognized by the image recognition device.

[0012] Optionally, the marking device includes a roller and a plurality of engraving members arranged on the roller, the frame is provided with a rotating shaft, the roller is arranged on the rotating shaft and can rotate around the rotating shaft.

[0013] Optionally, the axial direction of the roller is perpendicular to the conveying direction of the conveying device.

[0014] Optionally, the scoring member has a pointed end for scoring the raw coal on the conveying device.

[0015] Optionally, the scoring member includes a hollow column fixed on the outer surface of the drum, a spring arranged in the hollow column and a steel needle partially arranged in the hollow column. The spring is in a compressed state, one end of which acts on the drum or the hollow column, and the other end acts on the steel needle, so that the steel needle can move elastically relative to the drum.

[0016] Optionally, the plurality of scoring elements are arranged in rows on the drum, and the scoring elements in each row are spaced evenly apart.

[0017] Optionally, a driving component is further included, wherein the driving component is connected to the roller to drive the roller to rotate, and the rotation direction of the roller is opposite to the rotation direction of the conveying device.

[0018] Optionally, it also includes a surface treatment device arranged upstream of the image recognition device, and the surface treatment device is used to treat the surface of the raw coal.

[0019] Optionally, the surface treatment device is located downstream of the marking device.

[0020] Optionally, there are at least two sorting devices, and the two sorting devices are arranged at intervals downstream of the image recognition device.

[0021] Through the above scheme, the raw coal on the conveying device is first spread by the marking device before being recognized by the image recognition device, so that the raw coal on the conveying device is flattened and uniform, thereby facilitating recognition by the image recognition device and avoiding the problem of difficulty in identification or sorting due to excessive height of the piled raw coal or clumping of the raw coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional schematic diagram of a coal gangue separation device in one embodiment of the present invention;

[0023] Figure 2A yes Figure 1 A top view schematic diagram of a medium coal gangue separation device;

[0024] Figure 2B is a schematic top view of a coal gangue separation device in another embodiment of the present invention;

[0025] Figure 3 yes Figure 1 A schematic diagram of the main view of the medium coal gangue separation device;

[0026] Figure 4 yes Figure 1 A schematic diagram of the cross-sectional structure of the engraved part;

[0027] Reference numerals:

[0028] 10-frame; 11-rotating shaft;

[0029] 20-transmission device;

[0030] 30-marking device; 31-drum; 32-scratching member; 321-hollow column; 322-spring; 323-steel needle;

[0031] 40- Image recognition device;

[0032] 50- sorting device;

[0033] 60-Surface treatment device. DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0035] See also Figure 1-Figure 3 The present embodiment provides a coal gangue sorting device, comprising: a frame 10, a conveying device 20, a marking device 30, an image recognition device 40, a sorting device 50 and a control device (not shown in the figure); the marking device 30, the image recognition device 40 and the sorting device 50 are all arranged on the frame 10 and are all located above the conveying device 20; the marking device 30 is located upstream of the conveying device 20, and is used to spread the raw coal on the conveying device 20; the image recognition device 40 is located downstream of the marking device 30, and is used to identify coal gangue in the raw coal; the sorting device 50 is located downstream of the image recognition device 40, and is used to sort out the coal gangue identified by the image recognition device 40 from the conveying device 20; the control device is electrically connected to the conveying device 20, the image recognition device 40 and the sorting device 50 to control the operation of the conveying device 20, and control the operation of the sorting device 50 according to the data identified by the image recognition device 40.

[0036] The edge contour, grayscale information, texture information and scratch mark information of the raw coal are extracted by the image recognition device 40, and then the gangue classifier model is trained by machine learning to determine the gangue in the raw coal, and the gangue moves to the sorting area downstream of the conveyor 20, and then the sorting device 50 controls the rotation angle of the rake to accurately push down the gangue of different sizes, shapes and weights. Among them, the sorting device 50 is a manipulator, and multiple sorting devices 50 can be set.

[0037] Through the above scheme, the raw coal on the conveying device 20 is first spread by the marking device 30 before being recognized by the image recognition device 40, so that the raw coal on the conveying device 20 is flattened and uniform, thereby facilitating recognition by the image recognition device 40 and avoiding the problem of difficulty in recognition or sorting due to excessive height of the piled raw coal or agglomeration of the raw coal.

[0038] Among them, the function of the marking device 30 is to break up the raw coal to avoid agglomeration and difficulty in identification. In order to facilitate identification, the raw coal can also be scored to expose the surface of the coal and coal gangue, so that it is easier to identify. In this embodiment, the following technical solution is given: the marking device 30 includes a roller 31 and a plurality of scoring members 32 arranged on the roller 31. The axial direction of the roller 31 is perpendicular to the conveying direction of the conveying device 20. The frame 10 is provided with a rotating shaft 11. The roller 31 is arranged on the rotating shaft 11 and can rotate around the rotating shaft 11. The roller 31 can press down the raw coal that is piled up too high and break it up through the scoring members 32. The scoring members 32 can also score the raw coal so that the scored marks flow down on the surface of the coal gangue in the raw coal, which is conducive to the identification of the image recognition device 40.

[0039] Specifically, the scoring member 32 has a pointed end for scoring the raw coal on the conveying device 20. Figure 4 The scoring member 32 includes a hollow column 321 fixed on the outer surface of the drum 31, a spring 322 disposed in the hollow column 321, and a steel needle 323 partially disposed in the hollow column 321. The spring 322 is in a compressed state, one end of which acts on the drum 31 or the hollow column 321, and the other end of which acts on the steel needle 323, so that the steel needle 323 can move elastically relative to the drum 31. The above structural design of the scoring member 32 enables the scoring member 32 as a whole to move elastically relative to the conveying device 20, and when encountering a larger piece of raw coal, it can avoid damaging the conveying device 20 or the marking device 30.

[0040] In a specific embodiment, the plurality of scoring members 32 are arranged in a row on the drum 31, and the scoring members 32 in each row are spaced evenly apart to ensure that each conveyed coal gangue is scored and marked as much as possible.

[0041] The roller 31 can be freely rotatable, that is, it rotates passively under the interaction of the moving raw coal. In order to achieve a better paving effect, a driving component (not shown in the figure) can also be separately provided, and the driving component is connected to the roller 31 to drive the roller 31 to rotate, and the rotation direction of the roller 31 is opposite to the rotation direction of the conveying device 20. This arrangement can make the raw coal more evenly dispersed and more conducive to identification.

[0042] See also Figure 2B In another embodiment, the gangue sorting device is added with a surface treatment device 60, which is arranged upstream of the image recognition device 40 and is used to treat the surface of the raw coal. The surface treatment device 60 can provide a continuous airflow to purge the raw coal, thereby drying the raw coal, cleaning the surface, removing part of the moisture, dust, coal powder, etc. in the raw coal, thereby reducing the adhesion of dust and coal powder on the gangue, and achieving the purpose of improving the recognition effect. The surface treatment device 60 can be arranged upstream of the marking device 30, or downstream of the marking device 30. In this embodiment, the surface treatment device 60 is located downstream of the marking device 30. That is to say, the surface treatment device 60 processes the raw coal after paving.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coal gangue sorting device, characterized in that: include: A frame (10), a conveying device (20), a marking device (30), an image recognition device (40), a sorting device (50), and a control device; The frame (10) is provided with a rotating shaft (11); The marking device (30), the image recognition device (40) and the sorting device (50) are all arranged on the frame (10) and are all located above the conveying device (20); The marking device (30) is located upstream of the conveying device (20) and is used to spread the raw coal on the conveying device (20). The marking device (30) comprises a roller (31) and a plurality of scoring members (32) arranged on the roller (31). The roller (31) is arranged on the rotating shaft (11) and can rotate around the rotating shaft (11). The scoring member (32) has at least one tip and is used to score the raw coal on the conveying device (20). The image recognition device (40) is located downstream of the marking device (30) and is used to identify gangue in the raw coal. A surface treatment device (60) is provided upstream of the image recognition device (40) and is used to treat the surface of the raw coal. The sorting device (50) is located downstream of the image recognition device (40) and is used to sort the gangue recognized by the image recognition device (40) from the conveying device (20); The control device is electrically connected to the conveying device (20), the image recognition device (40) and the sorting device (50) to control the operation of the conveying device (20) and to control the operation of the sorting device (50) according to data recognized by the image recognition device (40).

2. The coal gangue separation device according to claim 1, characterized in that: The axial direction of the roller (31) is perpendicular to the conveying direction of the conveying device (20).

3. The coal gangue separation device according to claim 1, characterized in that: The scoring member (32) comprises a hollow column (321) fixed on the outer surface of the drum (31), a spring (322) disposed in the hollow column (321), and a steel needle (323) partially disposed in the hollow column (321); the spring (322) is in a compressed state, one end of which acts on the drum (31) or the hollow column (321), and the other end of which acts on the steel needle (323), so that the steel needle (323) can move elastically relative to the drum (31).

4. The coal gangue separation device according to any one of claims 2 to 3, characterized in that: The plurality of scoring elements (32) are arranged in rows on the roller (31), and the scoring elements (32) in each row are spaced at equal intervals.

5. The coal gangue separation device according to claim 1, characterized in that: It also comprises a driving component, which is connected to the roller (31) to drive the roller (31) to rotate, and the rotation direction of the roller (31) is opposite to the rotation direction of the conveying device (20).

6. The coal gangue separation device according to claim 1, characterized in that: The surface treatment device (60) is located downstream of the marking device (30).

7. The coal gangue separation device according to claim 1, characterized in that: The number of the sorting devices (50) is at least two, and the two sorting devices (50) are arranged at intervals downstream of the image recognition device (40).

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