A multi-dimensional efficient online metal classification device and method based on 3D-XRF

Abstract

The present invention discloses a multi-dimensional efficient online metal classification device and method based on 3D-XRF, including a frame and a conveying mechanism, a 3D scanning module, a moving mechanism and an XRF detection module installed on the frame. The 3D scanning module is installed on the frame and is used to scan the materials in the 3D scanning area to determine the horizontal and longitudinal positions of the materials in each transmission channel and the height of the materials relative to the transmission channel in the vertical direction. The XRF detection module is installed on the frame through the moving mechanism and is used to detect the elemental information of the materials located in the XRF detection area. The moving mechanism is used to drive the XRF detection module to move in the longitudinal and vertical directions. The present invention quickly controls the XRF detection module to detect quickly and accurately by reconstructing the three-dimensional morphology feedback of the material distribution on the surface of the conveying mechanism, reduces the high cost of the XRF detection module array, and can also obtain the morphology information of the material surface. On the basis of improving the detection accuracy, the three-dimensional information of the material is restored, and the application range of the equipment is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of metal recovery and sorting equipment, and in particular to a multi-dimensional high-efficiency online metal sorting device and method based on 3D-XRF. Background Art

[0002] Metal recycling, resource recycling and reuse. Currently, resource recycling is a global hotspot and an important measure to protect the environment. Metal recycling involves rapid detection and classification of elements. XRF technology is relatively mature for rapid detection of metals. The characteristic X-ray intensity and air attenuation efficiency of different metal elements are different. For light metals such as aluminum (Al), the fluorescence spectrum signal excited by X-rays is very weak and easily absorbed by air, so accurate positioning detection can better improve detection accuracy.

[0003] Scrap metals come in all shapes and sizes, and XRF online detection is inefficient. Online sorting equipment is mostly fixed X-ray sources and detectors, and objects are scanned and detected by conveyor belts. The cost of online detection in arrays is very high. In order to meet production requirements, current online sorting equipment often arranges detectors in linear arrays across the entire track surface, which is very expensive.

[0004] Therefore, there is an urgent need for a metal classification device that can be low-cost but can achieve relatively high detection efficiency. Summary of the invention

[0005] In order to solve the technical problems existing in the background technology, the present invention proposes a multi-dimensional and efficient online metal classification device and method based on 3D-XRF.

[0006] The present invention proposes a multi-dimensional and efficient online metal classification device based on 3D-XRF, comprising a frame, a conveying mechanism installed on the frame, a 3D scanning module, a moving mechanism and an XRF detection module, wherein:

[0007] The conveying mechanism is used to horizontally transport the material. The conveying mechanism is installed on the frame. The conveying mechanism has a plurality of transmission channels. The plurality of transmission channels are distributed along the longitudinal direction of the frame. Each transmission channel has a block of metal material.

[0008] The frame is provided with a 3D scanning area, an XRF detection area and a rejection area, and the conveying mechanism drives the material to pass through the 3D scanning area, the XRF detection area and the rejection area in sequence;

[0009] The 3D scanning module is installed on the frame and is used to scan the materials in the 3D scanning area to determine the horizontal and longitudinal positions of the materials in each transmission channel and the height relative to the transmission channel in the vertical direction;

[0010] The XRF detection module is installed on the frame through a moving mechanism. The XRF detection module is used to detect the materials located in the XRF detection area, and the moving mechanism is used to drive the XRF detection module to move in the longitudinal and vertical directions to ensure that the XRF detection module detects the materials in different transmission channels at equal distances.

[0011] Preferably, it further includes a host computer, which is connected to the 3D scanning module, the moving mechanism and the XRF detection module. The 3D scanning module transmits the detected information to the host computer, and the host computer controls the moving mechanism to drive the XRF detection module to move in the longitudinal and vertical directions according to the positions and heights of the materials in each channel; the XRF detection module transmits the detected information to the host computer.

[0012] Preferably, it further includes a rejection mechanism, which is installed on the frame and used to reject the non-conforming materials.

[0013] Preferably, it further includes a cover body, which is installed on the moving mechanism, and the XRF detection module is installed in the cover body.

[0014] Preferably, the 3D scanning module includes a area array camera and a line laser emitter, and the area array camera is relatively far from the XRF detection area with respect to the line laser emitter.

[0015] Preferably, the XRF detection module includes an X-ray emission tube and an SDD detector.

[0016] Preferably, the distance from the materials in the transmission channel to the XRF detection area gradually increases from one side of the conveying mechanism to the side far from the conveying mechanism.

[0017] Preferably, the frame further includes a calibration area. The conveying mechanism drives the materials to pass through the calibration area and then enter the 3D scanning area. The frame is provided with a lifting mechanism, and the lifting end of the lifting mechanism is provided with a limiting plate. The limiting plate has a plurality of limiting extensions, and one limiting extension corresponds to one transmission channel. The lifting mechanism drives the lifting plate to lift to realize the relative positions of the materials in the plurality of transmission channels being limited by the limiting extensions.

[0018] Preferably, a plurality of distance sensors are provided on the limiting plate, one distance sensor is opposite to one transmission channel, and the distance sensor is used to detect the height of the materials in the transmission channel, and the distance sensor feeds back the detected information to the host computer.

[0019] A multi-dimensional efficient online metal classification method based on 3D-XRF includes the following steps:

[0020] First, place the materials in the transmission channels of the conveying mechanism, and the distances from the materials in each transmission channel to the XRF detection area are different;

[0021] After the conveying mechanism drives the material to move into the 3D scanning area, the line laser emitter and the area array camera scan the three-dimensional information of the surface of the metal reconstruction object, and feedback the scanned three-dimensional information to the host computer. The host computer records the positions of the materials in each transmission channel in the horizontal, vertical, and longitudinal directions;

[0022] The host computer controls the longitudinal movement of the moving mechanism according to the different times when the materials in each channel enter the XRF detection area, ensuring that the XRF detection module can detect the materials in different transmission channels that move into the XRF detection area. At the same time, the host computer drives the XRF detection module to move vertically according to the height of the materials in the Z direction in different transmission channels, ensuring that the distances from the XRF detection module to the different materials in each material channel are equal, thereby ensuring the detection accuracy;

[0023] The XRF detection module transmits the detection information of the materials in each transmission channel to the host computer. The host computer integrates the three-dimensional information of the material surface and the element content information to form a multi-dimensional information point cloud, and judges whether it is the required one according to the requirements; The sorting mechanism sorts out different types of metal materials to complete online rapid sorting.

[0024] In the present invention, the proposed multi-dimensional efficient online metal classification device and method based on 3D-XRF quickly control the XRF detection module to detect quickly and accurately by reconstructing and feedbacking the three-dimensional morphology of the material distribution on the surface of the conveying mechanism, reducing the high cost of the XRF detection module array. At the same time, the morphology information of the material surface can also be obtained. On the basis of improving the detection accuracy, the three-dimensional information of the material is restored, increasing the application scope of the equipment.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the present invention;

[0027] Figure 2 It is a diagram showing the material distribution on the conveying mechanism of the present invention;

[0028] Figure 3 It is a system diagram of the present invention;

[0029] Figure 4 It is a schematic structural diagram of the cover body structure in some embodiments;

[0030] Figure 5 It is a cross-sectional view of the rear side plate of the cover body in some embodiments of the present invention;

[0031] Figure 6 It is a schematic structural diagram of some embodiments of the present invention;

[0032] Figure 7 Schematic diagram of the limiting plate structure in some embodiments of the present invention.

[0033] In the figure: 1. frame; 2. conveying mechanism; 20. transmission channel; 3. 3D scanning module; 30. area array camera; 31. line laser transmitter; 4. moving mechanism; 40. vertical telescopic mechanism; 41. longitudinal driving mechanism; 42. mounting plate; 5. XRF detection module; 50. X-ray emitting tube; 51. SDD detector; 6. transmission channel; 7. rejection mechanism; 8. host computer; 9. cover body; 90. first side plate; 91. front side plate; 92. second side plate; 93. rear side plate; 94. limit plate; 10. roller; 11. electric magnet; 12. iron block; 13. guide plate; 14. lifting mechanism; 15. limit plate; 150. limit extension; 16. distance sensor. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] like Figures 1-3 A multi-dimensional and efficient online metal classification device based on 3D-XRF is shown, comprising a frame 1, and a conveying mechanism 2, a 3D scanning module 3, a moving mechanism 4 and an XRF detection module 5 installed on the frame 1, wherein:

[0036] The conveying mechanism 2 is used to horizontally transport the material. The conveying mechanism is installed on the frame 1. The conveying mechanism 2 has a plurality of transmission channels 6. Each transmission channel 6 has a block of metal material. The plurality of transmission channels 6 are distributed in the longitudinal direction (from left to right or from right to left) as the first transmission channel 6, the second transmission channel 6, the third transmission channel 6...the Nth transmission channel 6, where N is a positive integer;

[0037] The conveying mechanism 2 may be a belt conveying mechanism in the prior art. It should be noted that those skilled in the art may also use other conveying mechanisms in the prior art that can realize horizontal transmission of bulk materials and have multiple transmission channels 6. In order to realize multiple transmission channels 6, a dividing strip may be provided along the length direction of the conveyor belt to form multiple transmission channels 6, and the horizontal transmission speeds of the multiple transmission channels 6 are equal; or a conveying device composed of multiple conveying mechanisms arranged horizontally, so that the horizontal transmission speeds of the multiple transmission channels 6 may be unequal, so that the transmission speed of the material of a single transmission channel 6 can be controlled separately;

[0038] The rack 1 is provided with a 3D scanning area, an XRF detection area and a rejection area. The conveying mechanism drives the material to pass through the 3D scanning area, the XRF detection area and the rejection area in sequence. The 3D scanning module 3 is installed on the rack 1 and is used to scan the material in the 3D scanning area to determine the horizontal and longitudinal positions of the material in each transmission channel 6 and the height of the material relative to the transmission channel 6 in the vertical direction.

[0039] The 3D scanning module 3 includes an area array camera 30 and a line laser emitter 31 installed above the conveying mechanism. The area array camera 30 is farther from the XRF detection area relative to the line laser emitter 31. The line laser emitter 31 and the area array camera 30 scan the three-dimensional information of the surface of the metal reconstructed object and feedback the scanned three-dimensional information to the host computer 8.

[0040] The XRF detection module 5 is installed on the moving table. There is one XRF detection module 5. The moving table is installed on the rack 1. The XRF detection module 5 includes an X-ray emission tube 50 and an SDD detector 51. Preferably, the X-ray emission tube 50 and the SDD detector 51 are installed in the housing. The moving mechanism 4 is used to drive the moving table to move in the vertical direction or longitudinally. Specifically, the moving mechanism 4 drives the XRF detection module 5 to move in the longitudinal line or vertical direction according to the three-dimensional information of the material scanned by the 3D scanning module 3, so as to ensure that the XRF detection module 5 can detect the surface technical element information of the metal materials in different transmission channels 6. The XRF detection module 5 feeds back the information of the materials in each transmission channel 6 detected to the host computer 8. The host computer 8 integrates the three-dimensional information of the material surface and the element content information to form a multi-dimensional information point cloud and judges whether it is the required one according to the requirements.

[0041] Similar to the existing material sorting machine, it also includes a rejection mechanism 7. The rejection mechanism 7 is installed on the rack 1 and rejects the materials in the transmission channels 6 that do not meet the requirements in the rejection area. The rejection mechanism 7 can be a nozzle in the prior art.

[0042] During the metal detection process, first place the material in the transmission channel 6 of the conveying mechanism. The materials in each transmission channel 6 are not in the same horizontal plane longitudinally, specifically as Figure 2 shown; preferably, among the materials in any two adjacent transmission channels 6, the material in the transmission channel 6 closer to the left is closer to the XRF detection area relative to the material in the transmission channel 6 on the right, and the materials in each transmission channel 6 enter the XRF detection area at different times.

[0043] When the conveying mechanism drives the material to move to the 3D scanning area, the line laser emitter 31 and the area array camera 30 scan the three-dimensional information of the surface of the metal reconstructed object and feedback the scanned three-dimensional information to the host computer 8. The host computer 8 marks the positions of the materials in each transmission channel 6 in the X direction (horizontal), Y direction (longitudinal) and Z direction (vertical).

[0044] The host computer 8 controls the longitudinal movement of the moving mechanism 4 according to the different times when materials enter the XRF detection area through each channel, ensuring that the XRF detection module 5 can detect the materials in different transport channels 6 that move into the XRF detection area. At the same time, the host computer 8 drives the XRF detection module 5 to move in the vertical direction according to the height information of the materials in the Z direction in different transport channels 6, ensuring that the distances from the XRF detection module 5 to different materials in each material channel are equal, thereby ensuring the detection accuracy;

[0045] The XRF detection module 5 transmits the detection information of the materials in each transport channel 6 to the host computer 8. The host computer 8 integrates the three-dimensional information on the material surface and the element content information to form a multi-dimensional information point cloud, and judges whether it is the required one according to the requirements; the sorting mechanism 7 sorts out different types of metal materials to complete on-line rapid sorting.

[0046] In some preferred embodiments, the moving mechanism 4 includes a vertical telescopic mechanism 40, a longitudinal driving mechanism 414 and a mounting plate 42. The vertical telescopic mechanism 40 is an electric cylinder, a cylinder or other mechanism in the prior art that can drive a plate-shaped material to reciprocate in the vertical direction. The mounting plate 42 is installed at the telescopic end of the telescopic mechanism, and the longitudinal driving mechanism 414 is installed on the mounting plate 42. The XRF detection module 5 is installed at the moving end of the longitudinal driving mechanism 414. Specifically, the longitudinal driving mechanism 414 is a lead screw slider mechanism in the prior art, which has high moving accuracy and small floor area.

[0047] As Figures 4-5 shown, in some preferred embodiments, it further includes a cover 9. The cover 9 is installed at the moving end of the longitudinal movement of the moving mechanism 4. The cover 9 includes a first side plate 90, a front side plate 91, a second side plate 92 and a rear side plate 93 connected in sequence. The rear side plate 93 is opposite to and parallel to the front side plate 91. The front side plate 91 is closer to the 3D scanning area than the rear side plate 93. The XRF detection module 5 is installed in the cover 9.

[0048] In some embodiments, preferably based on the above embodiments, the width of the cover 9 is equal to or slightly smaller than the width of the transmission channel 6. There is a sliding plate 94 at the bottom of the rear side plate 93, and the sliding plate 94 can slide vertically relative to the rear side plate 93. When the cover 9 moves above a transmission channel 6 and does not horizontally transmit relative to the conveying mechanism, the sliding plate 94 moves downward to limit the material and prevent the material that has not completed the XRF detection from leaving the detection area of the XRF detection module 5. Preferably, there are rollers 10 at the bottom of the sliding plate 94. The rollers 10 are in contact with the transmission channel 6 and can roll relative to the transmission channel 6. Preferably, a chute is opened at the bottom of the rear side plate 93. The limiting plate 15 is vertically slidably installed in the chute. There is a spring or other elastic member that can undergo vertical elastic deformation between the sliding plate 94 and the rear side plate 93. And there is an electromagnet 11 between the sliding plate 94 and the rear side plate 93. After the electromagnet 11 is turned on, the electromagnet adsorbs the sliding plate 94 to move upward into the chute. When the electromagnet 11 is turned off, the sliding plate 94 moves downward and contacts the transmission channel 6. Specifically, an electromagnet is installed at the top of the chute, and an iron block 12 is fixed at the top of the limiting plate 15. The electromagnet adsorbs the iron block 12 to realize the upward movement of the limiting plate 15 and be fixed by the electromagnet.

[0049] Specifically, when the cover 9 moves in the vertical or horizontal direction, the electromagnet is turned on and the sliding plate 94 is in the chute. When the cover 9 does not move, the electromagnet is in the off state, and the sliding plate 94 slides downward and contacts the transmission channel 6.

[0050] In some embodiments, preferably, there is also an inclined material guiding plate 13. The material guiding plate 13 also has a material guiding channel. One material guiding channel is opposite to one transmission channel 6. The material guiding plate 13 is an inclined plate that gradually slopes upward from the side close to the transmission channel 6 to the side away from the transmission channel 6.

[0051] Such as Figures 6-7In some embodiments, in order to ensure the distance difference of materials in the adjacent two transfer channels 6 in the horizontal direction (X direction), a calibration area is further included on the frame 1. The conveying mechanism drives the materials to pass through the calibration area and then enter the 3D scanning area. A lifting mechanism 14 is provided on the frame 1. The lifting mechanism 14 can be a structure such as a cylinder or an electric cylinder in the prior art that can drive the plate-shaped material to vertically lift and lower. A limiting plate 15 is provided at the lifting end of the lifting mechanism 14. There are multiple limiting extensions 150 on the limiting plate 15, defined as the first limiting extension 150, the second limiting extension 150, the third limiting extension 150... the Nth limiting extension 150. The lifting mechanism 14 drives the limiting plate 15 to move up and down to achieve the contact or separation between the first limiting extension 150 and the first transfer channel 6, the second limiting extension 150 and the second transfer channel 6, the third limiting extension 150 and the third transfer channel 6... the Nth limiting extension 150 and the Nth transfer channel 6. The horizontal distances between any two adjacent limiting extensions among the first limiting extension 150, the second limiting extension 150, the third limiting extension 150... the Nth limiting extension 150 are equal, and the first limiting extension 150, the second limiting extension 150, the third limiting extension 150... the Nth limiting extension 150 are gradually distributed away from the 3D scanning area in the longitudinal direction. During the feeding process, the lifting mechanism 14 drives the limiting plate 15 to move downward. When materials touch all of the first limiting extension 150, the second limiting extension 150, the third limiting extension 150... the Nth limiting extension 150, the lifting mechanism 14 drives the limiting plate 15 to move upward to ensure that the distances between the materials in the horizontal direction are equal. Preferably, sensors are provided on all of the first limiting extension 150, the second limiting extension 150, the third limiting extension 150... the Nth limiting extension 150 to detect whether there is material in contact with the limiting extension 150.

[0052] Preferably, a plurality of distance sensors are provided on the limiting plate 15. One distance sensor is opposite to one transfer channel 6. The distance sensor is used to detect the height of the material in the transfer channel 6. The distance sensor feeds back the detected information to the host computer 8, and the host computer 8 compares the information with the height information scanned by the 3D scanning module 3 to further increase the detection accuracy.

[0053] It should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0054] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0055] In the present invention, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0057] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered by the protection scope of the present invention.

Claims

1. A multi-dimensional and efficient online metal classification device based on 3D-XRF, characterized in that: The invention comprises a frame (1), a conveying mechanism (2), a 3D scanning module (3), a moving mechanism (4) and an XRF detection module (5) installed on the frame (1), wherein: The conveying mechanism (2) is used to horizontally convey materials, and the conveying mechanism (2) has a plurality of conveying channels (6), the plurality of conveying channels (6) are distributed along the longitudinal direction of the frame (1), and each of the conveying channels (6) contains block-shaped metal materials; The frame (1) is provided with a 3D scanning area, an XRF detection area and a rejection area, and the conveying mechanism drives the material to pass through the 3D scanning area, the XRF detection area and the rejection area in sequence; The 3D scanning module (3) is used to scan the material in the 3D scanning area to determine the horizontal and longitudinal positions of the material in each of the transmission channels (6) and the height of the material in the vertical direction relative to the transmission channel (6); The XRF detection module (5) is installed on the frame (1) via the moving mechanism (4); the XRF detection module (5) is used to detect element information of the material located in the XRF detection area; the moving mechanism (4) is used to drive the XRF detection module (5) to move in the longitudinal and vertical directions to ensure that the XRF detection module (5) detects materials in different transmission channels (6) at equal distances; The distance between the material in the transmission channel (6) and the XRF detection area gradually increases from one side of the conveying mechanism to the side away from the conveying mechanism; The device also comprises a cover body (9), wherein the cover body (9) is mounted on the moving mechanism (4), the XRF detection module (5) is mounted in the cover body (9), the cover body (9) comprises a first side plate (90), a front side plate (91), a second side plate (92) and a rear side plate (93) which are connected in sequence, the rear side plate (93) is arranged opposite to and parallel to the front side plate (91), the front side plate (91) is closer to the 3D scanning area relative to the rear side plate (93), a slide groove is provided at the bottom of the rear side plate (93), a sliding plate (94) is vertically slidably mounted in the slide groove, an elastic member is provided between the sliding plate (94) and the rear side plate (93), and an electric magnet (11) is provided between the sliding plate (94) and the rear side plate (93), and the sliding plate (94) is used to limit the position of the material; The frame (1) also includes a verification area, the conveying mechanism drives the material to pass through the verification area and then enter the 3D scanning area, the frame (1) is provided with a lifting mechanism (14), and a limit plate (15) is provided at the lifting end of the lifting mechanism (14), and the limit plate (15) has a plurality of limit extensions (150), and any two adjacent limit extensions (150) in the plurality of limit extensions (150) are at an equal distance in the horizontal direction, and the plurality of limit extensions (150) are distributed in a longitudinal direction gradually away from the 3D scanning area, and one limit extension (150) corresponds to one transmission channel (6), and the lifting mechanism (14) drives the limit plate (15) to rise and fall so that the limit extension (150) limits the relative position between the materials in the plurality of transmission channels (6).

2. The multi-dimensional and efficient online metal classification device based on 3D-XRF according to claim 1 is characterized in that: The invention also comprises a host computer (8), wherein the host computer (8) is connected to the 3D scanning module (3), the moving mechanism (4) and the XRF detection module (5); the 3D scanning module (3) transmits the detected information to the host computer (8); the host computer (8) controls the moving mechanism (4) to drive the XRF detection module (5) to move in the longitudinal and vertical directions according to the position and height of the materials in each of the transmission channels (6); and the XRF detection module (5) transmits the detected information to the host computer (8).

3. The multi-dimensional and efficient online metal classification device based on 3D-XRF according to claim 1 is characterized in that: It also comprises a rejection mechanism (7), which is mounted on the frame (1) and is used to reject materials that do not meet the requirements.

4. The multi-dimensional and efficient online metal classification device based on 3D-XRF according to claim 1 is characterized in that: The bottom of the sliding plate (94) is provided with a roller (10).

5. The multi-dimensional and efficient online metal classification device based on 3D-XRF according to claim 1 is characterized in that: The 3D scanning module (3) comprises an area array camera (30) and a line laser emitter (31), and the area array camera (30) is far away from the XRF detection area relative to the line laser emitter (31).

6. The multi-dimensional and efficient online metal classification device based on 3D-XRF according to claim 1 is characterized in that: The XRF detection module (5) comprises an X-ray emitting tube (50) and an SDD detector (51).

7. The multi-dimensional and efficient online metal classification device based on 3D-XRF according to claim 1 is characterized in that: A plurality of distance sensors are arranged on the limit plate (15), one distance sensor is opposite to one transmission channel (6), the distance sensor is used to detect the height of the material in the transmission channel (6), and the distance sensor feeds back the detected information to the host computer (8).

8. A multi-dimensional and efficient online metal classification method based on 3D-XRF, the method using the classification device according to any one of claims 1 to 7, characterized in that: The steps include: Firstly, the material is placed in a transmission channel (6) of a conveying mechanism, and the distance between the material in each transmission channel (6) and the XRF detection area is different; When the conveying mechanism drives the material to move to the 3D scanning area, the linear laser emitter (31) and the area array camera (30) scan the metal to reconstruct the three-dimensional information of the surface of the object, and feed the scanned three-dimensional information back to the host computer (8), and the host computer (8) records the position of the material in each transmission channel (6) in the horizontal, longitudinal and vertical directions; The upper computer (8) controls the moving mechanism (4) to move in the longitudinal direction according to the different times when each channel enters the XRF detection area, thereby ensuring that the XRF detection module (5) can detect the materials moved into different transmission channels (6) in the XRF detection area. At the same time, the upper computer (8) drives the XRF detection module (5) to move in the vertical direction according to the height of the materials in the different transmission channels (6) in the Z direction, thereby ensuring that the distances from the XRF detection module (5) to different materials in each material channel are equal, thereby ensuring the detection accuracy. The XRF detection module (5) transmits the material information detected in each transmission channel (6) to the host computer (8), and the host computer (8) integrates the three-dimensional information of the material surface and the element content information to form a multi-dimensional information point cloud, and determines whether it is required according to the demand; the rejection mechanism (7) sorts out different types of metal materials, and completes online rapid sorting.

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