Waste incineration slag precious metal sorting device

Abstract

The utility model relates to the technical field of garbage treatment, in particular to a garbage incineration slag precious metal sorting device which comprises a magnetic separation sorting module, an eddy current sorting module and an optical sorting module which are connected in sequence. The magnetic separation sorting module is used for adsorbing magnetic metal in the waste incineration slag; the eddy current sorting module is used for generating a directional alternating magnetic field, and nonferrous metals are obtained through screening of the directional alternating magnetic field and transmitted to the optical sorting module; the optical sorting module is used for marking the position of the precious metal in the preset area, and target nonferrous metal is grabbed into the storage box through an action response element of the optical sorting module based on the marked position of the precious metal. The precious metal can be automatically identified and sorted, and the sorting efficiency and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage disposal, in particular to a device for sorting precious metals from garbage incineration slag. Background Art

[0002] Slag recycling lines contain precious metals such as gold and silver, which possess high economic value. However, the quantities of these precious metals in slag are small and their distribution is highly uncertain. Traditionally, manual identification and sorting have been used. This process is simple and mechanical, requiring heavy workload and long hours. Prolonged sorting can lead to fatigue in the human eye, and some precious metals may not be effectively identified and sorted. Furthermore, the identified and sorted precious metals are difficult to effectively monitor. Therefore, it is necessary to develop a new type of precious metal sorting device for waste incineration slag. Utility Model Content

[0003] The purpose of the utility model is to provide a device for sorting precious metals from waste incineration slag, which can realize automatic identification and sorting of precious metals and improve sorting efficiency and accuracy.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] The utility model provides a device for sorting precious metals from waste incineration slag, comprising a magnetic separation and sorting module, an eddy current separation module and an optical separation module connected in sequence; the magnetic separation and sorting module is used to adsorb magnetic metals in waste incineration slag and transfer the magnetically separated and sorted materials to the eddy current separation module; the eddy current separation module is used to generate a directional alternating magnetic field, screen non-ferrous metals using the directional alternating magnetic field, and transfer the screened non-ferrous metals to the optical separation module; the optical separation module comprises a first distributor, a first image acquisition element, a first algorithm analysis element and an action response element; the first distributor is used to evenly distribute the non-ferrous metals on a first conveyor belt, the first image acquisition element is used to capture an image of a preset area on the first conveyor belt, and send the image to the first algorithm analysis element, the first algorithm analysis element is used to analyze and process the image, and mark the position of the precious metal in the image; the marked precious metal position is sent to the action response element, and the action response element grabs the target non-ferrous metal into a storage box based on the marked precious metal position, and transfers the remaining non-ferrous metal to the waste collection module.

[0006] Furthermore, it also includes an air separation and sorting module, which includes a second distributor, a visual recognition element and a high-pressure air nozzle. The second distributor is used to evenly distribute the waste incineration slag on the second conveyor belt, and the visual recognition element is used to collect and obtain images of the waste incineration slag in a preset area on the second conveyor belt, and analyze and determine whether the waste incineration slag in the preset area contains metal; the waste incineration slag that does not contain metal is transferred to the waste collection module, and the high-pressure air nozzle blows the waste incineration slag that contains metal to the magnetic separation and sorting module.

[0007] Furthermore, the eddy current sorting module includes a bracket, a motor and a permanent magnet fixed on the bracket. The output shaft of the motor is transmission-connected to the permanent magnet. The rotation of the motor drives the permanent magnet to rotate, thereby generating a directional alternating magnetic field.

[0008] Furthermore, the action response element includes a manipulator, and an X-direction adjustment unit for adjusting the manipulator in the X direction, a Y-direction adjustment unit for adjusting the manipulator in the Y direction, and a Z-direction adjustment unit for adjusting the manipulator in the Z direction.

[0009] Furthermore, the X-direction adjustment unit includes two first guide rails extending along the X-direction, and the extension direction of the first guide rails is parallel to the transmission direction of the first conveyor belt;

[0010] The Y-direction adjustment unit includes a second guide rail extending along the Y-direction, the second guide rail being perpendicular to the first guide rail, and first sliders capable of linearly reciprocating along the first guide rail in the X-direction are fixed at both ends of the second guide rail;

[0011] The Z-direction adjustment unit includes a third guide rail extending along the Z direction, the third guide rail is perpendicular to the first guide rail and the second guide rail, and a second slider is fixed on the third guide rail, which can perform linear reciprocating motion in the Y direction along the second guide rail, and a third slider is fixed on the third guide rail for fixing the robot and can perform linear reciprocating motion in the Z direction along the third guide rail.

[0012] Furthermore, the storage box is placed on the weighing module.

[0013] This utility model has the following unexpected beneficial effects: It first uses a magnetic separation and sorting module to absorb and separate magnetic metals from waste incineration slag. The magnetically separated material is then transferred to an eddy current sorting module, which generates a qualitative alternating magnetic field to screen out non-ferrous metals. The optical sorting module then identifies precious metals within the non-ferrous metals, and a motion-responsive element captures the precious metals and stores them in a storage box. This allows for automated identification and capture of precious metals from waste incineration slag, improving sorting efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The following is a schematic diagram showing the structure of the device for sorting precious metals from waste incineration slag according to the present invention;

[0015] Figure 2 The structure diagram of the eddy current sorting module of the present invention is shown;

[0016] Figure 3 The structure diagram of the optical sorting module of the present invention is shown;

[0017] Figure 4 The figure shows the structural diagram of the wind separation and sorting module of the present invention.

[0018] In the figure, 1 is a magnetic separation and sorting module, 11 is a belt iron remover, and 12 is a magnetic metal material box;

[0019] 2—eddy current sorting module, 21—bracket, 211—mounting portion, 22—motor, 221—output shaft, 23—permanent magnet, 24—bearing;

[0020] 3—optical sorting module, 31—first distributor, 32—first image acquisition element, 321—industrial color camera, 322—first annular light source, 33—action response element, 331—manipulator, 332—first guide rail, 333—second guide rail, 334—third guide rail, 335—third slider, 34—first conveyor belt, 35—first column, 36—second column;

[0021] 4—Storage box;

[0022] 5—air separation and sorting module, 51—second distributor, 52—visual recognition element, 521—spectral camera, 522—second annular light source, 53—high-pressure air nozzle, 54—second conveyor belt, 55—air pipe, 56—U-shaped slide rail, 57—conveying hopper;

[0023] 6—weighing module, 7—waste collection module, 8—climbing conveyor, 9—intermediate hopper, 91—movable opening, 10—third conveyor belt. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended solely to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the drawings only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0026] In one embodiment, see Figure 1 and Figure 3 As shown, the utility model provides a precious metal sorting device for waste incineration slag, comprising a magnetic separation and sorting module 1, an eddy current sorting module 2 and an optical sorting module 3 connected in sequence.

[0027] The magnetic separation and sorting module 1 is used to adsorb magnetic metals in the waste incineration slag and transmit the magnetically separated and sorted materials to the eddy current sorting module 2.

[0028] The eddy current sorting module 2 is used to generate a directional alternating magnetic field, use the directional alternating magnetic field to screen non-ferrous metals, and transmit the screened non-ferrous metals to the optical sorting module 3.

[0029] The optical sorting module includes a first distributor 31, a first image acquisition component 32, a first algorithm analysis component, and an action response component 33. The first distributor 31 is used to evenly distribute non-ferrous metals onto a first conveyor belt 34. The first image acquisition component 32 is used to capture images of a predetermined area on the first conveyor belt 34 and transmit the images to the first algorithm analysis component, which analyzes and processes the images and marks the locations of precious metals within the images. The first algorithm analysis component transmits the marked precious metal locations to the action response component 33, which, based on the marked precious metal locations, grabs the target non-ferrous metals and places them in the storage box 4. The remaining non-ferrous metals are then transferred to the waste collection module 7.

[0030] Specifically, the first image acquisition component 32 includes an industrial color camera 321 and a first annular light source 322 .

[0031] The sorting device operates by first performing a preliminary screening operation in magnetic separation module 1, which uses magnetic force to attract magnetic metals such as iron, nickel, and cobalt from the waste incinerator slag. After magnetic separation, the remaining non-magnetic materials are transferred to the next module, eddy current separation module 2.

[0032] The eddy current sorting module 2 further separates the material by generating a directional alternating magnetic field. In this module, non-ferrous metals (such as copper, aluminum, and precious metals) are separated from other materials in the slag by the magnetic field. These screened non-ferrous metals are then transferred to the optical sorting module 3 for more refined sorting.

[0033] The optical sorting module 3 is a key component of this system. It first distributes non-ferrous metals evenly onto a first conveyor belt 34 using a first distributor 31. Next, a first image acquisition component (such as a camera) captures images of a pre-defined area on the conveyor belt and transmits these images to a first algorithm analysis component. This highly intelligent component performs in-depth analysis and processing of the received images. Using advanced image processing algorithms, it identifies and marks the locations of precious metals (such as gold and silver) within the images. Once the locations of the precious metals are marked, this information is transmitted to an action response component 33. Based on this information, the action response component 33 (such as a robotic arm or gripper) accurately grasps the target non-ferrous metals and places them into a storage box 4. The remaining non-ferrous metals are transferred to a scrap collection module 7 for further processing or recycling.

[0034] In summary, this waste incineration slag precious metal sorting device achieves efficient and precise sorting of precious metals from waste incineration slag through the coordinated use of three modules: magnetic separation, eddy current separation, and optical separation. This not only improves the recovery rate of precious metals, but also helps reduce environmental pollution and achieve sustainable resource utilization.

[0035] Further, see Figure 1 As shown, to reduce the extended length of the processing line, the magnetic separation and sorting module 1, eddy current sorting module 2, and optical sorting module 3 are arranged in layers. Specifically, the magnetic separation and sorting module 1 and eddy current sorting module 2 are arranged on the upper mounting frame, and the optical sorting module 3 is arranged on the lower mounting frame. The waste incineration slag to be processed is transported to the third conveyor belt 10 of the upper mounting frame via a climbing conveyor 15. The magnetic separation and sorting module 1 and eddy current sorting module 2 are arranged sequentially along the conveyance direction of the third conveyor belt 10.

[0036] An intermediate hopper 9 is located between the discharge port of the eddy current sorting module 2 on the upper mounting frame and the inlet port of the optical sorting module 3 on the lower mounting frame. This intermediate hopper 9 has a movable opening 91 that can be opened and closed. Non-ferrous metals screened by the eddy current sorting module 2 enter the intermediate hopper 9 through the movable opening 91. The non-ferrous metals are then gravity-fed into the first distributor 31 for distribution.

[0037] In a preferred embodiment, an air separation and sorting module 5 is also included, comprising a second distributor 51, a visual recognition element 52, and a high-pressure air nozzle 53. A conveyor hopper 57 is positioned above the second distributor 51, into which the incineration slag to be processed is placed. During operation, the lower opening of the conveyor hopper 57 is opened, and the slag enters the second distributor under gravity. The second distributor 51 evenly distributes the incineration slag onto the second conveyor belt 54, a step that forms the basis for subsequent sorting operations, ensuring uniform distribution of the slag on the conveyor belt and improving sorting accuracy and efficiency.

[0038] The visual recognition element 52 is used to capture images of the waste incineration slag in a preset area on the second conveyor belt 54, and analyze and determine whether the waste incineration slag in the preset area contains metal. The visual recognition element 52 is responsible for capturing and acquiring images of the waste incineration slag in a preset area on the second conveyor belt 54, and using advanced image processing technology, quickly analyzing and determining whether these slags contain metal. The addition of this step enables the sorting device to identify and separate slag that does not contain metal at an early stage, thereby reducing the burden on subsequent sorting modules. Specifically, the visual recognition element 52 includes a spectral camera 521 and a second annular light source 522.

[0039] For waste incineration slag identified as containing metal, the high-pressure air nozzle 53 plays a key role. It sprays high-pressure gas at the slag, using the gas force to blow it into the magnetic separation and sorting module 1. In the magnetic separation and sorting module 1, the slag is further broken down, magnetic metals are adsorbed, and other substances are transferred to the subsequent eddy current sorting module 2 for further processing.

[0040] For those waste incineration slags determined by the visual recognition element 52 to be metal-free, they will be directly transferred to the waste collection module 7 for subsequent processing or recycling.

[0041] In summary, the addition of the wind separation and sorting module 5 improves the sorting process of the entire waste incineration slag precious metal sorting device, enabling rapid identification and separation of metal-free slag at an early stage, thereby improving the efficiency and accuracy of the entire sorting process. This also provides a purer and more efficient material input for the subsequent magnetic separation and sorting module 1, further improving the precious metal recovery rate and resource utilization.

[0042] Furthermore, the high-pressure air nozzle 53 is connected to the output port of the air pipe 55 and is arranged on one side of the second conveyor belt 54. A U-shaped slide rail 56 is arranged on the other side of the second conveyor belt 54, and the outlet of the U-shaped slide rail 56 is connected to the inlet of the climbing conveyor 15.

[0043] In a preferred embodiment, see Figure 2 As shown, the eddy current sorting module 2 includes a bracket 21, a motor 22 and a permanent magnet 23 fixed on the bracket. The output shaft 221 of the motor 22 is transmission-connected to the permanent magnet 23. The rotation of the motor 22 drives the permanent magnet 23 to rotate, generating a directional alternating magnetic field.

[0044] Specifically, the bracket 21 is arranged above the third conveyor belt 10, and two oppositely arranged mounting parts 211 are provided on the lower side of the bracket 21. The mounting parts 211 are provided with mounting holes for fixing the circumference 24. The motor 22 is fixed on the lower side of the bracket 21, and the output shaft 221 of the motor 22 passes through the bearing 24 and is connected to the permanent magnet 23 arranged between the two mounting parts 221.

[0045] When non-ferrous metals (such as copper, aluminum, gold, and silver) in waste incinerator slag pass through the eddy current sorting module 2, they enter the directional alternating magnetic field generated by the permanent magnets 23. Because non-ferrous metals are conductive, when they pass through the alternating magnetic field at a certain speed, eddy currents are induced within the metals. These eddy currents themselves generate an alternating magnetic field that opposes the magnetic field generated by the permanent magnets, exerting a repulsive force (Lorentz force) on the metals. This repulsive force separates the non-ferrous metals from the material flow, achieving the desired separation.

[0046] The eddy current sorting module 2 has a relatively simple design and lightweight structure, making it easy to install and maintain. Furthermore, it utilizes the eddy current principle for sorting, achieving high sorting efficiency and rapidly separating non-ferrous metals from slag. Furthermore, the eddy current sorting module 2 is suitable for treating a variety of slag types, adapting to the slag treatment needs of waste incineration plants of varying sizes and types.

[0047] In a preferred embodiment, see Figure 3 As shown, the action response element 33 includes a manipulator 331 , and an X-direction adjustment unit for adjusting the manipulator 331 in the X direction, a Y-direction adjustment unit for adjusting the manipulator 331 in the Y direction, and a Z-direction adjustment unit for adjusting the manipulator 331 in the Z direction.

[0048] Furthermore, the X-direction adjustment unit includes two first guide rails 332 extending along the X-direction, and the extension direction of the first guide rails 332 is parallel to the transmission direction of the first conveyor belt 34. The Y-direction adjustment unit includes a second guide rail 333 extending along the Y-direction, the second guide rail 333 being perpendicular to the first guide rail 332, and having first sliders fixed at both ends of the second guide rail 333 capable of linear reciprocating motion in the X-direction along the first guide rail 332. The Z-direction adjustment unit includes a third guide rail 334 extending along the Z-direction, the third guide rail 334 being perpendicular to the first guide rail 332 and the second guide rail 333, and having a second slider fixed to the third guide rail 334 capable of linear reciprocating motion in the Y-direction along the second guide rail 333. A third slider 335 for fixing the robot arm 331 and capable of linear reciprocating motion in the Z-direction along the third guide rail 334 is fixed to the third guide rail 334.

[0049] To adjust the manipulator's position, the sliders in each adjustment unit are controlled to perform linear reciprocating motion along the corresponding guide rails. Specifically, the X-axis adjustment unit adjusts the manipulator's position in the X direction, enabling precise movement along the conveyor belt. The Y-axis adjustment unit adjusts the manipulator's position in the Y direction, enabling lateral movement perpendicular to the conveyor belt. The Z-axis adjustment unit adjusts the manipulator's height in the Z direction, enabling precise vertical adjustment.

[0050] Furthermore, in order to realize the installation and fixation of the first image acquisition component 331 and the action response component 33, see Figure 3 As shown, a first column 35 and four second columns 36 are fixed on the frame near the side of the third conveyor belt, the first image acquisition element 331 is fixed to the upper part of the first column 35, and each first guide rail 332 of the action response element 33 is fixed to the upper ends of two second columns 36.

[0051] In a preferred embodiment, see Figure 3 As shown, the storage box 4 is placed on the weighing module 6 for weighing the precious metals obtained by sorting. When the weight of the precious metals reaches a preset value, the storage box 4 is replaced.

[0052] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by those skilled in the art based on the present invention shall fall within the protection scope of the present invention.

Claims

1. A device for sorting precious metals from waste incineration slag, characterized in that: It comprises a magnetic separation and sorting module (1), an eddy current sorting module (2) and an optical sorting module (3) which are connected in sequence; The magnetic separation and sorting module (1) is used to adsorb magnetic metals in the waste incineration slag and transmit the magnetically separated and sorted materials to the eddy current sorting module (2); The eddy current sorting module (2) is used to generate a directional alternating magnetic field, screen the non-ferrous metals using the directional alternating magnetic field, and transmit the screened non-ferrous metals to the optical sorting module (3); The optical sorting module (3) includes a first distributor (31), a first image acquisition element (32), a first algorithm analysis element and an action response element (33); the first distributor (31) is used to evenly distribute non-ferrous metals on the first conveyor belt (34); the first image acquisition element (32) is used to acquire an image of a preset area on the first conveyor belt (34) and send the image to the first algorithm analysis element; the first algorithm analysis element is used to analyze and process the image and mark the position of the precious metal in the image; the marked precious metal position is sent to the action response element (33); the action response element (33) grabs the target non-ferrous metal based on the marked precious metal position and puts it into the storage box (4); the remaining non-ferrous metal is transmitted to the waste collection module (7).

2. The device for separating precious metals from waste incineration slag according to claim 1, characterized in that: The invention also includes an air separation and sorting module (5), wherein the air separation and sorting module (5) includes a second distributor (51), a visual recognition element (52) and a high-pressure air nozzle (53), wherein the second distributor (51) is used to evenly distribute the waste incineration slag on the second conveyor belt (54), and the visual recognition element (52) is used to collect and obtain an image of the waste incineration slag in a preset area on the second conveyor belt (54), and analyze and determine whether the waste incineration slag in the preset area contains metal; the waste incineration slag that does not contain metal is transmitted to the waste collection module (7), and the high-pressure air nozzle (53) blows the waste incineration slag that contains metal to the magnetic separation and sorting module (1).

3. The device for separating precious metals from waste incineration slag according to claim 1, characterized in that: The eddy current sorting module (2) comprises a bracket (21), a motor (22), and a permanent magnet (23) fixed to the bracket (21); the output shaft of the motor (22) is in transmission connection with the permanent magnet (23); the permanent magnet (23) is driven to rotate by the rotation of the motor (22), thereby generating a directional alternating magnetic field.

4. The device for separating precious metals from waste incineration slag according to claim 1, characterized in that: The action response element (33) comprises a manipulator (331), an X-direction adjustment unit for adjusting the manipulator (331) in the X direction, a Y-direction adjustment unit for adjusting the manipulator (331) in the Y direction, and a Z-direction adjustment unit for adjusting the manipulator (331) in the Z direction.

5. The device for sorting precious metals from waste incineration slag according to claim 4, characterized in that: The X-direction adjustment unit comprises two first guide rails (332) extending along the X-direction, and the extension direction of the first guide rails (332) is parallel to the transmission direction of the first conveyor belt (34); The Y-direction adjustment unit comprises a second guide rail (333) extending in the Y direction, the second guide rail (333) being perpendicular to the first guide rail (332), and first sliders capable of performing linear reciprocating motion in the X direction along the first guide rail (332) being fixed at both ends of the second guide rail (333); The Z-direction adjustment unit comprises a third guide rail (334) extending in the Z direction, the third guide rail (334) being perpendicular to the first guide rail (332) and the second guide rail (333), and a second slider capable of performing linear reciprocating motion in the Y direction along the second guide rail (333) being fixed on the third guide rail (334), and a third slider (335) for fixing the manipulator (331) and capable of performing linear reciprocating motion in the Z direction along the third guide rail (334) being fixed on the third guide rail (334).

6. The device for sorting precious metals from waste incineration slag according to claim 1, characterized in that: The storage box (4) is placed on the weighing module (6).

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