Sorting system

Abstract

This invention discloses a sorting system that uses an X-ray source to emit X-rays towards the material to be sorted. An X-ray transmission detector collects the X-rays reflected from the material to obtain its contour and internal structure information. An X-ray backscatter detector collects the X-rays reflected from the material to obtain its atomic electron cloud density, i.e., its material composition information. A visible light source illuminates the material, and a visible light camera collects the visible light reflected from the material to obtain its appearance information. By registering and fusing these three types of imaging data, and then detecting the fused image, information such as the material's appearance, texture, color, contour, internal structure, and elemental composition can be obtained, determining the material's actual type. The material is then sorted through a sorting channel, thus filtering out materials with internal anomalies.

Description

Technical Field

[0001] This invention relates to the field of material screening technology, and in particular to a sorting system. Background Technology

[0002] Color sorters are common material sorting equipment. They mainly use the scanning imaging principle of visible light to convert the light signals reflected from the surface of materials into electrical signals for screening and differentiation. This technology is used, for example, when screening the maturity of products such as fruits and grains.

[0003] However, existing sorting machines or systems typically rely solely on visible light imaging principles during sorting, resulting in sorting that only differentiates the surface of materials. This has significant limitations in practical applications, often making it difficult to filter out materials with internal abnormalities. This is especially true for certain special products such as nuts, whose hard shells often make it difficult to directly separate products with internal differences using color sorters. Summary of the Invention

[0004] The purpose of this invention is to provide a sorting system that registers and fuses three types of imaging data, then detects the fused image to obtain information such as the appearance, texture, color, outline, internal structure, and elemental composition of the material to be sorted, thereby determining the actual type of the material to be sorted, and then completing the sorting through a sorting channel, thereby filtering out materials with internal abnormalities.

[0005] In a first aspect, the present invention provides a sorting system, comprising:

[0006] A translational conveyor is used to transport materials to be sorted.

[0007] The multi-band scanning imaging module includes an X-ray source, an X-ray backscatter detector, an X-ray transmission detector, a visible light source, and a visible light camera. The X-ray source emits X-rays toward the material to be sorted, the X-ray backscatter detector collects X-rays reflected from the material to be sorted, and the X-ray transmission detector collects X-rays transmitted through the material to be sorted. The visible light source emits visible light toward the material to be sorted, and the visible light camera collects visible light reflected from the material to be sorted.

[0008] In an optional embodiment, the sorting system further includes a sorting channel located obliquely below the conveying end of the translational conveying device, wherein the output optical axis of the visible light source and the incident optical axis of the visible light camera pass between the conveying end of the translational conveying device and the sorting channel;

[0009] And / or, the number of the visible light sources is at least two, with at least one of the visible light sources located above and below the translational conveying device;

[0010] And / or,

[0011] The number of visible light cameras is at least two, with at least one visible light camera located above and below the translational conveying device.

[0012] And / or, the sorting channel is fixed with a nozzle array, the nozzle array including a plurality of nozzles, the jet end of the nozzles being connected to the interior of the sorting channel.

[0013] In an optional embodiment, the translational conveying device includes a drive belt and rotatable drive rollers and driven rollers, the drive rollers and driven rollers being parallel in the horizontal direction, and the drive belt being fitted over the drive rollers and driven rollers;

[0014] The X-ray source and the X-ray backscatter detector are located above the drive belt, and the X-ray transmission detector is located inside the drive belt.

[0015] In an optional embodiment, a transmission detection plate 10 is further provided inside the transmission belt, and the X-ray transmission detector is fixed on the upper surface of the transmission detection plate.

[0016] In an optional embodiment, the sorting system further includes a vibrating assembly, which includes a vibrating plate, a connecting spring, and a telescopic connecting rod. The vibrating plate is located above the conveying front end of the drive belt and is inclined. The higher end of the vibrating plate is away from the drive belt, and the lower end of the vibrating plate is close to the drive belt. The connecting spring and the telescopic connecting rod are installed on both sides of the vibrating plate in the horizontal longitudinal direction so that it can reciprocate in the horizontal longitudinal direction.

[0017] In an optional embodiment, the high end of the vibrating plate is connected to a rotatable drive shaft, which is connected to the roller shaft of the drive roller. The drive roller drives the drive shaft to rotate, thereby causing the vibrating plate to oscillate back and forth.

[0018] In an optional embodiment, the drive shaft is fitted with a swing roller, the circumferential side of the swing roller is provided with a cam groove, the high end of the vibrating plate is connected to a driven plate, and one end of the driven plate is slidably engaged with the cam groove to form a cylindrical cam mechanism.

[0019] In an optional embodiment, the transmission shaft is fitted with a drive gear, and a driven gear meshes below the drive gear. The shaft of the driven gear is connected to the shaft of the drive roller.

[0020] In an optional embodiment, the sorting system further includes a vibrating feed box, which is fixed to the front side of the conveyor belt. The vibrating plate is located inside the vibrating feed box, and the connecting spring and the telescopic connecting rod are connected to the side wall of the vibrating feed box. The vibrating feed box is provided with a feeding channel, and the feeding channel and the vibrating plate are corresponding in the vertical direction.

[0021] In an optional embodiment, the sorting system further includes a connected protective cover and a valve box. The protective cover covers the translational conveying device, and the conveying end of the translational conveying device extends into the valve box. The X-ray source, X-ray transmission detector, visible light source, and visible light camera are fixed inside the valve box.

[0022] The beneficial effects of the embodiments of the present invention include:

[0023] X-rays are emitted from an X-ray source towards the material to be sorted. An X-ray transmission detector collects the X-rays reflected from the material to obtain information about its outline and internal structure. An X-ray backscatter detector collects the reflected X-rays to obtain information about the electron cloud density of the materials, i.e., their composition. A visible light source illuminates the material, and a visible light camera collects the reflected visible light to obtain information about its appearance. These three types of imaging data are then registered and fused. The fused image is then inspected to obtain information about the material's appearance, texture, color, outline, internal structure, and elemental composition, thus determining the material's actual type. Finally, the material is sorted through a sorting channel, allowing materials with internal anomalies to be filtered out. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is an assembly structure diagram of a composite imaging sorting system for nut screening according to the present invention;

[0026] Figure 2 This is a top view of a composite imaging sorting system for nut screening according to the present invention;

[0027] Figure 3 for Figure 2 Schematic diagram of the structure of the mid-section AA;

[0028] Figure 4 for Figure 3 Schematic diagram of the structure of the mid-section BB;

[0029] Figure 5 for Figure 3 Schematic diagram of the structure of the mid-section CC;

[0030] Figure 6 for Figure 5 A partial view of section D;

[0031] Figure 7 for Figure 5 Schematic diagram of the mid-section EE;

[0032] Figure 8 for Figure 7 A partial view of section F in the middle;

[0033] Figure 9 This is a distribution diagram of the multi-spectral scanning imaging module of the present invention;

[0034] Figure 10 This is a sorting flowchart of a composite imaging sorting system for nut screening according to the present invention.

[0035] Icons: 1-Sorting channel; 2-Receiving box; 3-Mounting bracket; 4-Vibrating feeder box; 5-Valve box; 6-Drive roller; 7-Driven roller; 8-Drive belt; 10-Transmission detector plate; 11-X-ray backscatter detector; 12-X-ray transmission detector; 13-Visible light source; 14-Visible light camera; 15-Nozzle array; 16-Protective cover; 17-Drive motor; 18-Drive sprocket; 19-Driven sprocket; 20-Feeding channel; 21-Vibrating plate; 22-Connecting spring; 23-Connecting rod; 24-Driven plate; 25-Drive shaft; 26-Swing roller; 27-Drive gear; 28-Driven gear. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] The following is in conjunction with the appendix Figures 1 to 10 The following describes some embodiments of the present invention in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] This invention discloses a sorting system, which includes a mounting bracket 3, a vibrating feed box 4, a protective cover 16, a valve box 5, a translational conveying device, a sorting channel 1, a receiving box 2, a vibrating assembly, and a multi-band scanning imaging module.

[0044] The vibrating feed box 4, the protective cover 16 and the valve box 5 are fixedly installed on the mounting bracket 3 in sequence, and the inner cavities of the vibrating feed box 4, the protective cover 16 and the valve box 5 are interconnected.

[0045] The translational conveyor is mainly used to convey materials to be sorted. It is positioned above the mounting bracket 3 and inside the protective cover 16 and valve box 5; that is, the protective cover 16 covers the translational conveyor, and the conveying end of the translational conveyor extends into the valve box 5. The vibrating feed box 4 is located in front of the conveying end of the translational conveyor. The sorting channel 1 is fixed to the outer wall of the valve box 5 and communicates with its inner cavity. The sorting channel 1 is located diagonally below the conveying end of the translational conveyor. The receiving box 2 is located below and communicates with the sorting channel 1. The receiving box 2 has multiple receiving slots inside to receive the sorted materials. The vibrating assembly is located inside the vibrating feed box 4 and above the conveying end of the translational conveyor. The vibrating feed box 4 has a feeding channel 20, and the feeding channel 20 and the vibrating plate 21 correspond vertically.

[0046] Thus, in actual operation, the material to be sorted is first fed into the feeding channel 20 on the vibrating feed box 4. The material to be sorted is nuts, but it can also be other types of materials. The material to be sorted falls from the feeding channel 20 onto the vibrating assembly, and then the vibrating assembly vibrates to feed the material, so that the material to be sorted quickly enters the translational conveyor. The translational conveyor transports the material to be sorted towards the sorting channel 1. After being accelerated by the translational conveyor, the material to be sorted is thrown out and, after being scanned and identified by the multi-band scanning imaging module, falls into the sorting channel 1 for further sorting and screening, and finally falls into the receiving box 2.

[0047] The protective cover 16 can prevent the materials to be sorted during the conveying process from falling outside the equipment. On the other hand, together with the valve box 5, it can provide a relatively light-isolated environment inside the equipment, avoiding interference from external light sources or other signals to the materials to be sorted.

[0048] The feed channel 20 is funnel-shaped, meaning that the inner diameter of the feed channel 20 gradually decreases along the vertical downward direction to facilitate accurate feeding of the materials to be sorted.

[0049] The translational conveying device includes a transmission belt 8, a drive roller 6, and a driven roller 7. The drive roller 6 and the driven roller 7 are parallel in the horizontal direction, and the drive roller 6 is farther away from the sorting channel 1 relative to the driven roller 7. Both ends of the roller shaft of the drive roller 6 and both ends of the roller shaft of the driven roller 7 can be rotatably inserted into the inner wall of the protective cover 16. The transmission belt 8 is fitted around the drive roller 6 and the driven roller 7. Thus, when the drive roller 6 rotates, it can drive the driven roller 7 to rotate through the transmission belt 8. The transmission belt 8 correspondingly drives the material to be sorted to move horizontally, so as to achieve stable horizontal conveying of the material to be sorted.

[0050] It is understandable that the rotation of the drive roller 6 requires power, so a drive motor 17 is fixed inside the mounting bracket 3. The drive motor 17 is connected to the roller shaft of the drive roller 6 to drive the drive roller 6 to rotate.

[0051] Specifically, a drive sprocket 18 is fitted over the output shaft of the drive motor 17, and a driven sprocket 19 is fitted over one end of the roller shaft of the drive roller 6. A chain is fitted between the drive sprocket 18 and the driven sprocket 19 to form a sprocket and chain transmission mechanism, thereby transmitting the rotational driving force of the drive motor 17 to the drive roller 6, causing the drive roller 6 to rotate.

[0052] The drive sprocket 18 can be welded to the peripheral side of the output shaft of the drive motor 17, and the driven sprocket 19 can be welded to the peripheral side of one end of the drive roller 6 shaft, thereby ensuring that the drive sprocket 18 is fixed relative to the output shaft of the drive motor 17 and the driven sprocket 19 is fixed relative to the drive roller 6 shaft.

[0053] The vibrating assembly includes a vibrating plate 21, a connecting spring 22, and a telescopic connecting rod 23. The vibrating plate 21 is located above the conveying front end of the transmission belt 8 and is inclined. The higher end of the vibrating plate 21 is away from the transmission belt 8, and the lower end is close to the transmission belt 8. Connecting springs 22 and telescopic connecting rods 23 are installed on both sides of the vibrating plate 21 in the horizontal longitudinal direction. The connecting springs 22 and telescopic connecting rods 23 are connected to the side wall of the vibrating feed box 4. The telescopic connecting rods 23 connect the vibrating plate 21 and the vibrating feed box 4, and their telescopic properties provide a fixed range and track for the swing of the vibrating plate 21, allowing the vibrating plate 21 to swing back and forth in the horizontal longitudinal direction. The connecting springs 22 compress or stretch as the vibrating plate 21 swings, reducing the impact force on the vibrating feed box 4 during the swing of the vibrating plate 21, thus providing a certain degree of buffering for the overall equipment.

[0054] The high end of the vibrating plate 21 is connected to a rotatable drive shaft 25. The drive shaft 25 is connected to the roller shaft of the drive roller 6. The drive roller 6 drives the drive shaft 25 to rotate, so that the vibrating plate 21 swings back and forth to realize the vibration feeding process.

[0055] In this way, the rotation of the drive roller 6 drives the rotation of the transmission roller, causing the vibrating plate 21 to swing horizontally and longitudinally. Thus, the vibrating plate 21 and the transmission belt 8 can share a single drive motor 17 to achieve their respective functions, eliminating the need for a separate vibration motor to drive the vibrating plate 21, saving costs. This allows the vibrating assembly and the translational conveying device to form a material conveying device that operates synchronously and in conjunction with each other.

[0056] In this embodiment, a swing roller 26 is sleeved on the drive shaft 25. A cam groove is opened on the peripheral side of the swing roller 26. A driven plate 24 is connected to the high end of the vibrating plate 21. One end of the driven plate 24 is slidably engaged with the cam groove to form a cylindrical cam mechanism. Thus, when the drive shaft 25 rotates and drives the swing roller 26 to rotate, the sliding engagement between the cam groove and the driven plate 24 forces the driven plate 24 to perform horizontal reciprocating motion, thereby driving the vibrating plate 21 to swing.

[0057] The number of swing rollers 26 and the number of driven plates 24 are the same and correspond one-to-one. The specific number of the two is not specifically limited in this embodiment. It can be two as shown in the figure, or one or more.

[0058] In order to transmit the rotational driving force from the drive roller 6 to the transmission shaft 25, a drive gear 27 is sleeved on one end of the transmission shaft 25. A driven gear 28 meshes below the drive gear 27. The driven gear 28 is rotatably mounted on the vibrating feed box 4, and the shaft of the driven gear 28 is connected to the roller shaft of the drive roller 6.

[0059] Specifically, the drive gear 27 can be welded to the circumferential side of one end of the drive shaft 25 to maintain its fixation relative to the drive shaft 25. The shaft of the driven gear 28 and the roller shaft of the drive roller 6 can be connected by a sprocket and chain drive mechanism.

[0060] The multi-band scanning imaging module includes an X-ray source, an X-ray backscatter detector 11, an X-ray transmission detector 12, a visible light source 13, and a visible light camera 14.

[0061] The X-ray source, X-ray transmission detector 12, visible light source 13, and visible light camera 14 are fixed inside the valve box 5. The X-ray source and X-ray backscatter detector 11 are located directly above the end of the conveyor belt 8. The X-ray source can emit X-rays towards the material to be sorted, and the X-ray backscatter detector 11 can collect the X-rays reflected by the material to be sorted. A transmission detection plate 10 is also provided inside the conveyor belt 8. The X-ray transmission detector 12 is fixed on the upper surface of the transmission detection plate 10, so that the X-ray transmission detector 12 is located inside the conveyor belt 8. The X-ray transmission detector 12 can collect the X-rays that pass through the material to be sorted. The X-ray transmission detector 12 is located in the direction of the X-ray source's emission. For example, if the X-ray source emits X-rays vertically downwards, then the X-ray transmission detector 12 is located directly below the X-ray source, that is, the X-ray source and the X-ray transmission detector 12 are arranged facing each other in the vertical direction.

[0062] The visible light source 13 is located near the end of the conveyor belt of the translational conveyor. The output axis of the visible light source 13 and the input axis of the visible light camera 14 both pass between the end of the translational conveyor and the sorting channel 1, that is, between the end of the conveyor belt 8 and the sorting channel 1. During the process of the material to be sorted being thrown out by the conveyor belt 8 and falling into the sorting channel 1, the movement path of the material to be sorted will form a parabola. The output axis of the visible light source 13 and the input axis of the visible light camera 14 intersect with this parabola. In this way, the visible light source 13 can emit visible light to irradiate the material to be sorted on the parabolic path, and the visible light camera 14 can collect the visible light reflected by the material to be sorted.

[0063] Thus, by emitting X-rays towards the material to be sorted through an X-ray source, the X-rays reflected from the material by the X-ray transmission detector 12 are used to obtain the outline and internal structure information of the material to be sorted; by collecting the X-rays reflected from the material by the X-ray backscatter detector 11, the electron cloud density outside the atomic nuclei of the material to be sorted, i.e., the material composition information, is obtained; by illuminating the material with a visible light source 13, the visible light reflected from the material by the visible light camera 14 is used to obtain the appearance information of the material to be sorted. By registering and fusing these three types of imaging data, and then detecting the fused image, information such as the appearance, texture, color, outline, internal structure, and elemental composition of the material to be sorted can be obtained, thereby determining the actual type of the material to be sorted. Finally, sorting is completed through sorting channel 1, thus filtering out materials with internal anomalies.

[0064] Specifically, the upper part of the valve box 5 houses a microcomputer controller with a deep learning module. The lower part of the valve box 5 is located around the drive belt 8 and the driven roller 7.

[0065] The X-ray source, X-ray transmission detector 12, X-ray backscatter detector 11, visible light source 13, and visible light camera 14 are all electrically connected to a microcomputer controller. The microcomputer controller controls the operation of the X-ray source, X-ray transmission detector 12, X-ray backscatter detector 11, visible light source 13, and visible light camera 14. At the same time, the deep learning module performs registration and fusion processing on the imaging data transmitted from the X-ray transmission detector, X-ray backscatter detector 11, and visible light camera 14. That is, the imaging data of the X-ray transmission detector, X-ray backscatter detector 11, and visible light camera 14 are uniformly sent to the microcomputer controller. The microcomputer controller registers and fuses the three types of imaging data and sends them to the deep learning module for detection. By analyzing the appearance, texture, and color information of the material to be sorted from the outside to the inside, the visible light detection provides information on the appearance, texture, and color; the X-ray transmission detection provides information on the contour and internal structure; and the X-ray backscatter detection provides information on the microscopic composition of the elements. The actual type of the object to be detected is determined by combining the three types of detection data, and then sorting is completed through sorting channel 1.

[0066] The number of visible light sources 13 is at least two, with at least one visible light source 13 located above and below the translational conveying device; for example, in Figure 9 In this system, there are four visible light sources 13, with two visible light sources 13 located below and above the translational conveying device. The light emission axis of each visible light source 13 intersects the parabolic path of the material to be sorted at a single point, thereby increasing the spectral density of the material to be sorted, which in turn improves the imaging clarity of the visible light camera 14 and thus improves the sorting accuracy.

[0067] Furthermore, the number of visible light cameras 14 is at least two, with at least one visible light camera 14 located both above and below the translational conveying device, for example in... Figure 9 In the middle, there is a visible light camera 14 above and below the translational conveyor, which can improve the clarity of the visible light captured by the visible light camera 14;

[0068] It should also be noted that the visible light camera 14 and the visible light source 13 located above the translational conveyor are one group, while the visible light camera 14 and the visible light source 13 located below the translational conveyor are another group.

[0069] like Figure 10 As shown, the material screening process is illustrated below, taking walnut sorting and testing as an example:

[0070] Step 1: Synchronous image acquisition, controlling the X-ray backscatter detector 11, X-ray transmission detector 12 and visible light camera 14 to simultaneously scan and image the material to be sorted;

[0071] Step 2: Spectral segment separation. The three images of the material scanned in Step 1 are input into the microcomputer controller to separate and analyze the spectral segments of the images, that is, to analyze the spectral segment composition of each image.

[0072] Step 3: Spectral fusion, which involves fusing and analyzing the multiple sets of spectral data from Step 2;

[0073] Step 4: Deep learning recognition, mainly using object detection, inputs the fused object data into the neural network, extracts material features through downsampling, upsampling and other measures, and finally achieves material localization and classification through various loss functions.

[0074] In this embodiment, a nozzle array 15 is fixed on the upper surface of the sorting channel 1. The nozzle array 15 includes several nozzles, and the jet end of the nozzles extends into the interior of the sorting channel 1. A high-pressure air pump device is connected to the nozzle array 15. At the same time, solenoid valves are installed on the nozzle surfaces at different positions. The solenoid valves and the high-pressure air pump device are electrically connected to the microcomputer controller inside the valve box 5. After the aforementioned multi-spectral scanning imaging module scans and identifies the material, the image is processed by the deep learning module inside the microcomputer controller. This allows the high-pressure air pump and the solenoid valve of the corresponding nozzle to be activated, blowing the material at the corresponding position into the corresponding receiving slot of the receiving box 2.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sorting system characterized by, include: A translational conveyor is used to transport materials to be sorted. The multi-band scanning imaging module includes an X-ray source, an X-ray backscatter detector, an X-ray transmission detector, a visible light source, and a visible light camera. The X-ray source emits X-rays towards the material to be sorted, the X-ray backscatter detector collects X-rays reflected from the material to be sorted, and the X-ray transmission detector collects X-rays transmitted through the material to be sorted. The visible light source emits visible light towards the material to be sorted, and the visible light camera collects visible light reflected from the material to be sorted. The translational conveying device includes a transmission belt and rotatable drive rollers and driven rollers. The drive rollers and driven rollers are parallel in the horizontal direction, and the transmission belt is fitted over the drive rollers and driven rollers. The X-ray source and the X-ray backscatter detector are located above the drive belt, and the X-ray transmission detector is located inside the drive belt; The sorting system also includes a vibrating assembly, which includes a vibrating plate, a connecting spring, and a telescopic connecting rod. The vibrating plate is located above the conveying front end of the transmission belt and is inclined. The high end of the vibrating plate is away from the transmission belt, and the low end of the vibrating plate is close to the transmission belt. The connecting spring and the telescopic connecting rod are installed on both sides of the vibrating plate in the horizontal longitudinal direction so that it can swing back and forth in the horizontal longitudinal direction. The high end of the vibrating plate is connected to a rotatable drive shaft, which is connected to the roller shaft of the drive roller. The drive roller drives the drive shaft to rotate, so that the vibrating plate swings back and forth. The drive shaft is fitted with a swing roller, and the circumferential side of the swing roller is provided with a cam groove. The high end of the vibrating plate is connected to a driven plate, and one end of the driven plate is slidably fitted into the cam groove to form a cylindrical cam mechanism. The drive shaft is fitted with a drive gear, and a driven gear meshes below the drive gear. The shaft of the driven gear is connected to the shaft of the drive roller.

2. The sorting system of claim 1, wherein, The sorting system also includes a sorting channel, which is located obliquely below the conveying end of the translational conveying device. The output optical axis of the visible light source and the incident optical axis of the visible light camera pass between the conveying end of the translational conveying device and the sorting channel. And / or, the number of the visible light sources is at least two, with at least one of the visible light sources located above and below the translational conveying device; And / or, The number of visible light cameras is at least two, with at least one visible light camera located above and below the translational conveying device; And / or, the sorting channel is fixed with a nozzle array, the nozzle array including a plurality of nozzles, the jet end of the nozzles being connected to the interior of the sorting channel.

3. The sorting system according to claim 1, characterized in that, The transmission belt is also equipped with a transmission detection plate, and the X-ray transmission detector is fixed on the upper surface of the transmission detection plate.

4. The sorting system according to claim 1, characterized in that, The sorting system also includes a vibrating feed box, which is fixed to the front side of the conveyor belt. The vibrating plate is located inside the vibrating feed box. The connecting spring and the telescopic connecting rod are connected to the side wall of the vibrating feed box. The vibrating feed box is provided with a feeding channel, and the feeding channel and the vibrating plate are vertically aligned.

5. The sorting system according to claim 1, characterized in that, The sorting system also includes a connected protective cover and a valve box. The protective cover is installed outside the translational conveying device, and the conveying end of the translational conveying device extends into the valve box. The X-ray source, X-ray transmission detector, visible light source and visible light camera are fixed inside the valve box.

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