A glass cullet purification and color sorting device and method

Abstract

This invention discloses a color sorting device and method for purifying broken glass. The device includes a feeding device, a color sorting and separation device, and an air passage device. The feeding device vibrates and feeds the material to the color sorting and separation device, which screens the main purified material and impurities in one pass. The air passage device assists the color sorting and separation device in rejecting the determined material and sending it to the corresponding receiving bin. The color sorting device and method for purifying broken glass disclosed in this invention can improve the screening accuracy.

Description

Technical Field

[0001] This invention relates to the field of crushed glass recycling and screening technology, specifically to a crushed glass purification color sorting device and color sorting method. Background Technology

[0002] In the glass recycling industry, recyclable glass bottles, flat glass, and other raw materials are processed into particles within a certain size range after crushing. Due to the presence of impurities in the raw materials during glass recycling, this particle size range of crushed glass contains impurities such as discolored glass or ceramics. For example, when recycling colorless transparent crushed glass, the material may contain brown, light green, or opaque ceramics or stones. In this case, color sorting equipment is needed to further screen the crushed glass. Most color sorters on the market are primarily used in the food industry (soybeans, corn, rice, etc.) or in ore sorting. While these color sorters can also be used for material sorting in dry glass recycling, they suffer from poor adaptability, unsatisfactory screening results, and the inability to simultaneously screen discolored glass and opaque impurities.

[0003] In the prior art, patent publication number CN111408552A discloses an intelligent glass sorting system and method. Glass fragments are placed on a conveyor belt and enter the detection system. The main controller of the detection system controls each CCD camera in one of the three CCD units of the CCD camera module to dynamically scan the glass fragments on the belt, acquiring the color signals of the collected glass fragments. The three CCD units are used to detect white, brown, and green waste glass fragments respectively, and the color signals detected by the CCD units are transmitted to the signal processing system through a photosensitive receiver. However, the prior art cannot color sort opaque white impurities and transparent white glass. Since the glass fragments are located on the conveyor belt, the opaque white impurities and transparent white glass have the same or very similar image, making them unrecognizable by the CCD units. Summary of the Invention

[0004] The technical problem to be solved by this invention is to solve the problem that existing color sorters cannot simultaneously screen discolored glass and opaque impurities, and that the materials to be sorted are limited.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A glass purification color sorting device includes a feeding device 100, a color sorting and separation device 200, and an air passage device 300. The feeding device 100 vibrates and feeds the material to the color sorting and separation device 200, which screens the main purified material and impurities in one pass. The air passage device 300 assists the color sorting and separation device 200 in rejecting the judged material and sending it to the corresponding receiving bin.

[0007] The color sorting and separation device 200 includes a support assembly 210, a feed chute assembly 220, a linear color CCD camera module 230, a main control board, and a nozzle assembly 240 located on the support assembly 210. The feed chute assembly 220 is equipped with a three-color LED background light strip assembly 224, which is used to set the background color required for image acquisition when identifying the main purified material and impurities. The linear color CCD camera module 230 is used to acquire the background color and the RGB value of the material color displayed by the three-color LED background light strip assembly 224 pixel by pixel in the same direction as the material flow direction. The main control board controls the nozzle assembly 240 to screen and remove the material flowing through the outlet of the feed chute assembly 220 based on the data acquired by the linear color CCD camera module 230.

[0008] Advantages: In the field of broken glass recycling and screening, a three-channel purification color sorting device is provided, which improves the removal rate of impurities during material screening. It creatively removes brown and light green glass from the impurities into the same channel, and removes opaque CSP ceramics, stones, and ceramic shards into another channel. The sorting is completed in one step without the need for secondary or multiple screening processes, reducing the manufacturing and maintenance costs of enterprises and improving sorting efficiency. At the same time, it provides enterprises with a technical solution for targeted sorting, grading, and classification management of recycled broken glass materials.

[0009] In one embodiment of the present invention, the feed chute assembly 220 includes a feed chute plate 221, a material anti-jump plate 222, and a fine-tuning device 223;

[0010] The feeding chute 221 and the material anti-jump plate 222 are arranged opposite to each other, forming a material chute 2212 between them. The material chute 2212 is inclined, and the inlet and outlet of the material chute 2212 are from top to bottom, with the inlet being wider and the outlet being narrower. A light-transmitting glass 2211 is provided on the feeding chute 221, and the light-transmitting glass 2211 is located on the opposite side of the material anti-jump plate 222.

[0011] The fine-tuning device 223 is fixedly connected to the support assembly 210 and hinged to the feed slide plate 221, and can adjust the tilt angle of the material slide 2212.

[0012] The tri-color LED background light strip assembly 224 includes a first tri-color LED background light strip assembly 2241 and a second tri-color LED background light strip assembly 2242, which are located in the feed slide plate 221 in sequence according to the direction of material sliding, and are located on the back of the light-transmitting glass 2211, and the light strip display surface is facing the material anti-jump plate 222.

[0013] The material anti-jump plate 222 is provided with a first rectangular hole and a second rectangular hole 2222 arranged vertically and with a certain offset angle. The first rectangular hole and the second rectangular hole 2222 are located diagonally above the tricolor LED backlight strip assembly 224.

[0014] In one embodiment of the present invention, the linear array color CCD camera module 230 is on the support component 210, on the same side as the material anti-jump plate 222; the linear array color CCD camera module 230 includes a fill light component 231, a transparent glass cover 232 and a camera component 233; the camera component 233 is located inside the transparent glass cover 232, the fill light component 231 is located directly above the transparent glass cover 232, and the camera lens of the camera component 233 faces the tri-color LED backlight strip component 224, so that the camera lens of the camera component 233 passes through the material slide 2212 area behind the rectangular hole 2222 and the entire tri-color LED backlight strip component 224 area to form a material image acquisition space area.

[0015] In one embodiment of the present invention, the camera assembly 233 includes a first camera 2331, a second camera 2332, a third camera 2333, and a fourth camera 2334; the first camera 2331 and the third camera 2333 are arranged vertically, the second camera 2332 and the fourth camera 2334 are arranged vertically, and the first camera 2331 and the second camera 2332 are on the same horizontal line, and the third camera 2333 and the fourth camera 2334 are on the same horizontal line;

[0016] After the camera lenses of the first camera 2331 and the second camera 2332 pass through the first rectangular hole, the image capture area of ​​the material slide 2212 and the entire area of ​​the first three-color LED backlight strip assembly 2241 form the first material image acquisition space area.

[0017] The camera lenses of the third camera 2333 and the fourth camera 2334, after passing through the second rectangular hole 2222, capture images of the material slide 2212 area and the entire second tri-color LED backlight strip assembly 2242 area, forming a second material image acquisition space area.

[0018] In one embodiment of the present invention, the object distance between the first camera 2331 and the second camera 2332 is greater than half the overall length of the first rectangular hole and less than the overall length of the first rectangular hole; the object distance between the third camera 2333 and the fourth camera 2334 is greater than half the overall length of the second rectangular hole 2222 and less than the overall length of the second rectangular hole 2222.

[0019] In one embodiment of the present invention, the nozzle assembly 240 includes a first nozzle assembly 241 and a second nozzle assembly 242; the first nozzle assembly 241 and the second nozzle assembly 242 are respectively located on both sides of the discharge port of the material chute 2212; the first nozzle assembly 241 and the second nozzle assembly 242 have the same structure and are both connected to the air passage device 300 and the main control board.

[0020] The first nozzle assembly 241 includes a first airflow distribution tank 2411, a first air inlet pipe 2412, and a first nozzle element 2413. The two ends of the first air inlet pipe 2412 are respectively connected to the first airflow distribution tank 2411 and the air path device 300. The first nozzle element 2413 is fixedly connected to the outside of the housing of the first airflow distribution tank 2411. A plurality of first nozzles 2414 are provided on the first nozzle element 2413, and each first nozzle 2414 is provided with an electromagnetic control valve and is connected to the first airflow distribution tank 2411 through an air pipe. The electromagnetic control valves are all communicatively connected to the main control board.

[0021] In one embodiment of the present invention, the plurality of first nozzles 2414 in the first nozzle component 2413 are equally divided into a first nozzle region and a second nozzle region; the main control board outputs a signal to control whether the first nozzles 2414 in the first nozzle region are activated based on the acquisition area result of the first camera 2331; the main control board outputs a signal to control whether the first nozzles 2414 in the second nozzle region are activated based on the acquisition area result of the second camera 2332.

[0022] The second nozzle assembly 242 divides the multiple second nozzles 2424 on the second nozzle element 2423 into a third nozzle region and a fourth nozzle region. The main control board outputs a signal to control whether the second nozzles 2424 in the third nozzle region operate, based on the acquisition area results of the third camera 2333. The main control board outputs a signal to control whether the second nozzles 2424 in the fourth nozzle region operate, based on the acquisition area results of the fourth camera 2334.

[0023] In one embodiment of the present invention, the color sorting and separation device 200 further includes a first fixed baffle plate 251, a second fixed baffle plate 252, a first hopper partition adjustment plate 253, and a second hopper partition adjustment plate 254 that form a material sorting channel.

[0024] In one embodiment of the present invention, the first fixed baffle plate 251 is located below the first nozzle assembly 241, the second fixed baffle plate 252 is located below the second nozzle assembly 242, and the first hopper partition adjustment plate 253 and the second hopper partition adjustment plate 254 are located between the first fixed baffle plate 251 and the second fixed baffle plate 252.

[0025] The first fixed baffle plate 251 and the first hopper partition adjustment plate 253 form the first impurity channel 2513; the first hopper partition adjustment plate 253 and the second hopper partition adjustment plate 254 form the main purified material channel 2534; the second hopper partition adjustment plate 254 and the second fixed baffle plate 252 form the second impurity channel 2542.

[0026] A first impurity receiving bin 261, a main receiving bin 262, and a second impurity receiving bin 263 are respectively provided at the outlets of the first impurity channel 2513, the main purification material channel 2534, and the second impurity channel 2542.

[0027] This invention also discloses a color sorting method for a broken glass purification color sorting device, comprising the following steps:

[0028] S100, based on the color attributes and light-transmitting characteristics of the main purified material and impurities, the background color of the three-color LED backlight strip assembly 224 is set so that the background color is set to a color close to the color of the main purified material, and the close color is also a distinguishing color of the impurities. The monitoring pixel area size of one or more color channels is set in the linear color CCD camera module 230. The sorting program combination, reference value, upper and lower limits, and nozzle valve delay time in the nozzle assembly 240 are set in the main control board.

[0029] S200, start the feeding device 100, the material forms a certain inclined material flow on the feeding slide assembly 220, flows through the upper surface of the light-transmitting glass 2211, and enters the material image acquisition space area.

[0030] S300, the linear array color CCD camera module 230 acquires material image acquisition space area in real time along the material flow, and horizontally acquires the RGB values ​​of the background color and material color of the three-color LED background light strip assembly 224 pixel by pixel, and reads and stores the RGB channel values ​​of the image information into the main control board;

[0031] S400, the information processing unit of the main control board performs three levels of image value processing on the image information values ​​to establish an original database, a correction database, and an enhancement database; the original database is used for the coarse selection domain logic judgment in the coarse selection mode, the correction database is used for the fine selection domain logic judgment in the fine selection mode, and the enhancement database is used for the strong selection domain logic judgment in the strong selection mode.

[0032] S500, based on the color characteristics of the main purified material and the pre-rejected material corresponding to the nozzle assembly 240, a sorting combination program of one or more modes in {coarse selection mode; fine selection mode; strong selection mode} is set; and the combination programs can be either OR logic or AND logic.

[0033] In S600, the main control board outputs a control signal based on the judgment result value fed back by the sorting program in S400 to control whether the corresponding electromagnetic pneumatic valve on the nozzle assembly 240 is activated or not; when the material on the feed slide assembly 220 passes the nozzle assembly 240 on the downward sliding path, if it is determined to be the main purified material, the spray valve is not activated, and the main purified material flows into the main receiving bin in the receiving bin; when judging impurities, the main control board controls the spray valve to activate, and different impurities enter different receiving bins;

[0034] S700 runs the selected sorting program combination and cycles through S300 to S600 to complete the material purification and color sorting.

[0035] Advantages: In the field of rubble glass recycling and screening, this method provides a purification and color sorting control method based on linear array color CCD image recognition technology. It utilizes multi-mode self-selection combinations based on the RGB feature values ​​of the material image and different grades required by the market for finished products. This method significantly improves material sorting efficiency, solves the problem of difficulty in identifying light green (or other light-colored) rubble glass, effectively controls the carry-over ratio of qualified products when removing impurities, improves the cleanliness of finished product sorting, grading, and classification, effectively addresses the segmented production needs of enterprises for graded qualified products, enhances the enterprise's competitive advantage in the market, and improves screening efficiency, cleanliness, rejection rate, and carry-over ratio while ensuring screening effect.

[0036] In one embodiment of the present invention, in step S400:

[0037] The raw processing involves constructing a raw database for the RGB channel based on the data collected by the linear color CCD camera module (230) with the maximum line pixel size of the camera as the length and the monitored pixel area size as the width.

[0038] The correction process involves performing grayscale correction on the data in the original database based on set reference values ​​and upper or lower limits to improve grayscale contrast and form a correction database for that channel.

[0039] Enhancement processing involves setting reference values ​​and upper or lower limits for the data in the original database, and then performing saturation processing on the data in the original database to increase the color brightness of the channel, thus forming an enhanced database for the channel.

[0040] Compared with the prior art, the beneficial effects of the present invention are:

[0041] Based on the material characteristics in the broken glass recycling production line, a rational structural design was implemented. The light source system was creatively distributed on both sides of the material flow, while the camera acquisition system was placed on one side. Two sets of background light assemblies were positioned on one side of the material flow, and two sets of nozzle assemblies were positioned on both sides. A three-channel screening and separation path (left, main, and right) was established. Through the structural design of vibration feeding, image acquisition, material separation, and air path distribution, combined with the configuration of the light source background, camera module, nozzle assembly, and air path distribution, the system achieved one-time acquisition of the material flow, precise control of the spray valve action, and one-time screening and separation of materials into three categories: qualified products, colored transparent products, and opaque CSP impurities. This improved screening efficiency, screening purity, and refined classification management of impurities, enhancing the company's advantages in production capacity, finished product quality, and impurity refinement and purification. It also improved the company's refined management level and increased its cost and competitive advantage in the market.

[0042] By setting up two sets of tri-color LED backlights, the camera assembly uses two linear CCD arrays to simultaneously acquire images of the material flow. The images are then processed by the main control board, undergoing grayscale correction and feature enhancement to create a differentiated screening database for the material image data. The system creatively combines coarse selection, fine selection, and strong selection modes based on the color characteristics of different materials, achieving significant results in identifying and separating light-colored and discolored glass. While fulfilling basic screening functions, it is also adaptable to different purification requirements, demonstrating compatibility with various materials and application adaptability to different primary purification material screening scenarios for broken glass. Combined with the hardware precision of the broken glass purification color sorting device, it significantly improves the purification degree, carry-over ratio, and rejection rate of the color sorting, surpassing the performance of other color sorters in the broken glass field. It possesses a highly targeted dry color sorting process suitable for broken glass recycling. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of a broken glass purification and color sorting device according to an embodiment of the present invention.

[0044] Figure 2 This is a schematic diagram of the feeding device according to an embodiment of the present invention.

[0045] Figure 3 This is a schematic diagram of the color sorting device according to an embodiment of the present invention.

[0046] Figure 4 This is a partial enlarged view of the feed chute assembly according to an embodiment of the present invention.

[0047] Figure 5 This is a schematic diagram of a linear color CCD camera module according to an embodiment of the present invention.

[0048] Figure 6 This is a schematic diagram of the first nozzle component according to an embodiment of the present invention.

[0049] Figure 7 This is a schematic diagram of the second nozzle component according to an embodiment of the present invention.

[0050] Figure 8 This is a schematic diagram of the gas path device according to an embodiment of the present invention. Detailed Implementation

[0051] To facilitate understanding of the technical solution of the present invention by those skilled in the art, the technical solution of the present invention will now be further described in conjunction with the accompanying drawings.

[0052] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0053] Please see Figure 1 As shown, the present invention provides a glass slag purification and color sorting device, including a feeding device 100, a color sorting and separation device 200, and an air passage device 300. The feeding device 100 vibrates and feeds the material to the color sorting and separation device 200, which screens the main purified material and impurities in one pass. The air passage device 300 assists the color sorting and separation device 200 in rejecting the judged material and sending it to the corresponding receiving bin.

[0054] Please see Figure 1 and Figure 2As shown, in one embodiment of the present invention, the feeding device 100 includes a support frame 110, a first frame 120, shock-absorbing springs 130, a vibration motor 140, and a feeding bin 1540. Adjustable legs 111 are provided at the lower part of the support frame 110 to adjust the height of the support frame 110, so that the support frame 110 is arranged in a stepped manner at a certain height. Multiple shock-absorbing springs 130 are located between the support frame 110 and the first frame 120, tilting the first frame 120 at a certain angle. The feeding bin 1540 is fixedly located on the first frame 120, indirectly causing the feeding bin 1540 to also tilt at a certain angle. A material flexible transition plate 152 is provided on the outside of the material bin outlet 151 at the front end of the feeding bin 1540. The material flexible transition plate 152 is fixed to the material bin outlet 151 by an L-shaped bracket 153, and guide plates 154 are provided on both sides of the material flexible transition plate 152. The material soft transition plate 152 is at the same angle as the feed inlet of the color sorting and separation device 200, and the vibration motor 140 is located at the rear end of the feed bin 1540 and fixed on the first frame 120.

[0055] Please see Figures 1 to 4 As shown, in one embodiment of the present invention, the color sorting and separation device 200 includes a support assembly 210, a feed chute assembly 220 located on the support assembly 210, a linear array color CCD camera module 230, a main control board, and a nozzle assembly 240. A three-color LED background light strip assembly 224 is provided on the feed chute assembly 220, used to set the background color required for image acquisition when identifying the main purified material and impurities. The linear array color CCD camera module 230 is used to acquire, pixel by pixel, the background color displayed by the three-color LED background light strip assembly 224 and the RGB values ​​of the material color in the same direction as the material flow. Based on the data acquired by the linear array color CCD camera module 230, the main control board controls the nozzle assembly 240 to screen and remove materials flowing through the outlet of the feed chute assembly 220.

[0056] The support assembly 210 includes a second bracket 211, a base 212 and a frame 213 sequentially arranged on the second bracket 211, and a feed slide assembly 220, a linear color CCD camera module 230, a nozzle assembly 240 and an air passage device 300, all of which are fixed on the frame 213.

[0057] Please see Figures 1 to 4As shown, in one embodiment of the present invention, the feeding chute assembly 220 includes a feeding chute plate 221, a material anti-jump plate 222, and a fine-tuning device 223. The feeding chute plate 221 and the material anti-jump plate 222 are arranged opposite to each other, forming a material chute 2212 between them. The material chute 2212 is inclined, and the inlet and outlet of the material chute 2212 are from top to bottom, with the inlet being wider and the outlet being narrower. A light-transmitting glass 2211 is provided on the feeding chute plate 221, and the light-transmitting glass 2211 is located on the opposite side of the material anti-jump plate 222.

[0058] The fine-tuning device 223 is fixedly connected to the support component 210 and hinged to the feed slide plate 221, and can adjust the tilt angle of the material slide 2212.

[0059] The three-color LED background light strip assembly 224 includes a first three-color LED background light strip assembly 2241 and a second three-color LED background light strip assembly 2242, which are located in the feed slide plate 221 in sequence according to the direction of material sliding, and are located on the back of the light-transmitting glass 2211, and the light strip display surface is facing the material anti-jump plate 222.

[0060] In this embodiment, when the main purification material is transparent white broken glass, the first tri-color LED backlight strip assembly 2241 is used to identify the background required for image acquisition when capturing images of opaque CSP impurities, and the second tri-color LED backlight strip assembly 2242 is used to identify the background required for image acquisition when capturing images of translucent colored glass such as brown glass and light green glass. When the main purification material is a certain type of colored translucent glass: the first tri-color LED backlight strip assembly 2241 is used to identify the background required for image acquisition when capturing images of a certain type of colored translucent glass, and the second tri-color LED backlight strip assembly 2242 is used to identify the background required for image acquisition when capturing images of transparent white broken glass and other colored glass.

[0061] The material anti-jump plate 222 is provided with a first rectangular hole (not shown in the figure) and a second rectangular hole 2222, which are set vertically and have a certain misalignment angle. The first rectangular hole and the second rectangular hole 2222 are located diagonally above the tricolor LED backlight strip assembly 224.

[0062] Please see Figures 1 to 5As shown, in one embodiment of the present invention, the linear array color CCD camera module 230 is on the support component 210, on the same side as the material anti-jump plate 222. The linear array color CCD camera module 230 includes a fill light component 231, a transparent glass cover 232, and a camera component 233. The camera component 233 is located inside the transparent glass cover 232, the fill light component 231 is located directly above the transparent glass cover 232, and the camera lens of the camera component 233 faces the three-color LED backlight strip component 224, so that the camera lens of the camera component 233 passes through the material slide 2212 area behind the rectangular hole and the entire three-color LED backlight strip component 224 area to form a material image acquisition space area.

[0063] In this embodiment, the supplementary light assembly 231 has adjustable brightness and adjustable illumination angle, and is used to supplement the light on the materials within the shooting range of the CCD camera, to eliminate the shadows and reflections of broken glass in the background, and to improve the clarity, brightness, saturation and other color characteristics of the captured image.

[0064] The camera assembly 233 includes a first camera 2331, a second camera 2332, a third camera 2333, and a fourth camera 2334. The first camera 2331 and the third camera 2333 are arranged vertically, the second camera 2332 and the fourth camera 2334 are arranged vertically, and the first camera 2331 and the second camera 2332 are on the same horizontal line, as are the third camera 2333 and the fourth camera 2334.

[0065] The lenses of the first camera 2331 and the second camera 2332, after passing through the first rectangular hole, image the material chute 2212 area and the entire area of ​​the first three-color LED backlight strip assembly 2241, forming a first material image acquisition space area. The lenses of the third camera 2333 and the fourth camera 2334, after passing through the second rectangular hole 2222, image the material chute 2212 area and the entire area of ​​the second three-color LED backlight strip assembly 2242, forming a second material image acquisition space area.

[0066] More specifically, the object distance between the first camera 2331 and the second camera 2332 is greater than half the overall length of the first rectangular hole and less than the overall length of the first rectangular hole, to ensure that all material flowing through the first three-color LED backlight strip assembly 2241 can be collected. The object distance between the third camera 2333 and the fourth camera 2334 is greater than half the overall length of the second rectangular hole 2222 and less than the overall length of the second rectangular hole 2222, to ensure that all material flowing through the second three-color LED backlight strip assembly 2242 can be collected.

[0067] Please see Figures 1 to 7As shown, in one embodiment of the present invention, the nozzle assembly 240 includes a first nozzle assembly 241 and a second nozzle assembly 242, which are located on both sides of the discharge port of the material chute 2212. The first nozzle assembly 241 and the second nozzle assembly 242 have the same structure and are both connected to the air circuit device 300 and the main control board. The main control board is an FPGA control board.

[0068] The first nozzle assembly 241 includes a first airflow distribution tank 2411, a first air inlet pipe 2412, and a first nozzle component 2413. The two ends of the first air inlet pipe 2412 are connected to the first airflow distribution tank 2411 and the air path device 300, respectively. The first nozzle component 2413 is fixedly connected to the exterior of the housing of the first airflow distribution tank 2411. Multiple first nozzles 2414 are provided on the first nozzle component 2413, and each first nozzle 2414 is equipped with an electromagnetic control valve, which is connected to the first airflow distribution tank 2411 via an air pipe. All electromagnetic control valves are communicatively connected to the main control board.

[0069] The first nozzle 2414 in the first nozzle component 2413 is divided into a first nozzle area and a second nozzle area. The main control board outputs a signal to control whether the first nozzle 2414 in the first nozzle area moves or not, based on the acquisition area result of the first camera 2331. The main control board outputs a signal to control whether the first nozzle 2414 in the second nozzle area moves or not, based on the acquisition area result of the second camera 2332.

[0070] In this implementation, with Figure 6 As shown, the first nozzles 2414 on the first nozzle component 2413 are numbered sequentially from left to right, with a total of 160 first nozzles 2414. Among them, the first nozzles 2414 numbered 1-80 are nozzles in the first nozzle area, and the first nozzles 2414 numbered 81-160 are nozzles in the second nozzle area.

[0071] The second nozzles 2424 on the second nozzle component 2423 in the second nozzle assembly 242 are divided into a third nozzle region and a fourth nozzle region. The main control board outputs a signal to control whether the second nozzles 2424 in the third nozzle region are active or not, based on the acquisition area results of the third camera 2333. The main control board outputs a signal to control whether the second nozzles 2424 in the fourth nozzle region are active or not, based on the acquisition area results of the fourth camera 2334.

[0072] In this implementation, with Figure 7As shown, the second nozzles 2424 on the second nozzle component 2423 are numbered sequentially from right to left, with a total of 160 second nozzles 2424. Among them, the second nozzles 2424 numbered 1-80 are nozzles in the third nozzle area, and the second nozzles 2424 numbered 81-160 are nozzles in the fourth nozzle area.

[0073] Please see Figures 1 to 3 As shown, in one embodiment of the present invention, the color sorting separation device 200 further includes a first fixed baffle plate 251, a second fixed baffle plate 252, a first hopper partition adjustment plate 253, and a second hopper partition adjustment plate 254 that form the material sorting channel.

[0074] The first fixed baffle plate 251 is located below the first nozzle assembly 241, the second fixed baffle plate 252 is located below the second nozzle assembly 242, and the first hopper partition adjustment plate 253 and the second hopper partition adjustment plate 254 are located between the first fixed baffle plate 251 and the second fixed baffle plate 252.

[0075] The first fixed baffle plate 251 and the first hopper partition adjustment plate 253 form the first impurity channel 2513. The first hopper partition adjustment plate 253 and the second hopper partition adjustment plate 254 form the main purified material channel 2534. The second hopper partition adjustment plate 254 and the second fixed baffle plate 252 form the second impurity channel 2542. A first impurity receiving bin 261, a main receiving bin 262, and a second impurity receiving bin 263 are respectively provided at the outlets of the first impurity channel 2513, the main purified material channel 2534, and the second impurity channel 2542.

[0076] The first hopper partition adjustment plate 253 and the second hopper partition adjustment plate 254 can adjust the size of the feed opening of the three channels left and right, and can also adjust the height position of the feed inlet of the first impurity channel 2513, the main purified material channel 2534 and the second impurity channel 2542, thereby realizing the precise adjustment of the material flow in the three channels.

[0077] Please see Figures 1 to 8As shown, in one embodiment of the present invention, the air circuit device 300 includes an air control cabinet 310 and, within the air control cabinet 310, a main air inlet pipe 320, a manual valve 330, an air filter 340, a pressure regulator 350, a first output air pipe 360, a second output air pipe 370, a first pressure reducing valve 380, and a second pressure reducing valve 390. One end of the main air inlet pipe 320 is connected to an air source (not shown in the figure), and the other end is connected to the first output air pipe 360 ​​and the second output air pipe 370. The manual valve 330, the air filter 340, and the pressure regulator 350 are respectively located sequentially on the pipe section between the main air inlet pipe 320 and the first output air pipe 360 ​​and the second output air pipe 370. The first pressure reducing valve 380 is located on the first output air pipe 360, and the second pressure reducing valve 390 is located on the second output air pipe 370. The first output air pipe 360 ​​is connected to the first air inlet pipe 2412, and the second output air pipe 370 is connected to the second air inlet pipe 2422 in the second nozzle assembly 242. Specifically, the air pressure regulator 350 adjusts the total air source pressure to 0.8 MPa, and the first pressure reducing valve 380 and the second pressure reducing valve 390 set the air inlet pressure of the nozzle assembly 240 to 0.6-0.8 MPa.

[0078] Please see Figures 1 to 8 As shown, the present invention also provides a color sorting method for a crushed glass purification color sorting device, comprising the following steps:

[0079] S100: Based on the color attributes and light-transmitting characteristics of the main purified material and impurities, the background color of the three-color LED backlight strip assembly 224 is set so that the background color is a color close to the color of the main purified material, and this close color is also a distinguishing color for the impurities. The monitoring pixel area size of one or more color channels is set in the linear color CCD camera module 230. The sorting program combination, reference value, upper and lower limits, and nozzle valve delay time in the nozzle assembly 240 are set in the main control board.

[0080] In this embodiment, the main purified material is colorless transparent glass, and the impurities include brown transparent glass, light green glass, and opaque CSP ceramics, pebbles, and ceramic fragments. Therefore, the background parameters of the first tri-color LED backlight strip assembly 2241 are set to {R: 105, G: 105, B: 105}, i.e., dark gray, and the background parameters of the second tri-color LED backlight strip assembly 2242 are set to {R: 205, G: 205, B: 205}, i.e., grayish-white.

[0081] S200, start the feeding device 100, the material forms a material flow at a certain angle on the feeding slide assembly 220, flows through the upper surface of the light-transmitting glass 2211, and enters the material image acquisition space area.

[0082] The S300 linear color CCD camera module 230 acquires material images in real time along the material flow within the acquisition space, horizontally acquiring the RGB values ​​of the background color and material color of the three-color LED background light strip assembly 224 pixel by pixel, and reading and storing the RGB channel values ​​of the image information to the main control board.

[0083] The S400 main control board's information processing unit performs three levels of image data processing to establish a raw database, a correction database, and an enhancement database. The raw database is used for coarse selection logic judgment in coarse selection mode, the correction database is used for fine selection logic judgment in fine selection mode, and the enhancement database is used for strong selection logic judgment in strong selection mode.

[0084] Specifically, in step S400, the three levels of image numerical processing include:

[0085] The raw processing involves constructing a raw database for the RGB channel based on the data collected by the linear color CCD camera module 230, where the maximum line pixel size of the camera is the length and the monitored pixel area size is the width.

[0086] The correction process involves performing grayscale correction on the data in the original database based on the set reference values ​​and upper or lower limits to improve grayscale contrast, thus forming the correction database for that channel.

[0087] Enhancement processing involves setting reference values ​​and upper or lower limits for the data in the original database, then performing saturation processing on the data in the original database to increase the color brightness of the channel, thus forming the enhanced database for that channel.

[0088] S500, based on the color characteristics of the main purified material and the pre-rejected material corresponding to the nozzle assembly 240, sets a sorting combination program of one or more modes in {coarse selection mode; fine selection mode; strong selection mode}, and the combination programs can be either OR logic or AND logic.

[0089] In this embodiment, when the material flows through the position illuminated by the first three-color LED backlight strip assembly 2241, the first camera 2331 and the second camera 2332 collect the RGB values ​​of the material image on a dark gray background. By selecting the B program in the coarse selection mode for sorting and setting the coarse selection range value and the monitoring pixel area, a better identification effect of CSP impurities can be achieved.

[0090] When the material flows past the position illuminated by the second and third color LED backlight strip assembly 2242, the third camera 2333 and the fourth camera 2334 capture the RGB channel values ​​of the material image on a gray-white background. For brown glass impurities, the B program in the coarse selection mode is used for sorting. By setting the fine selection range value and the monitored pixel area, a good identification effect for brown broken glass can be achieved. For light green broken glass, based on the initial selection of the B program in the coarse selection mode, the G program or a combination of G|B programs in the fine selection mode is added, significantly improving the identification accuracy of light green glass. Furthermore, if the impurity rate requirement for the purified light green glass is more stringent, the combination of G, B, or G|B programs in the strong selection mode is added, significantly reducing the impurity rate of light green glass in the qualified product and further improving the purity of the qualified product.

[0091] In S600, the main control board outputs a control signal based on the judgment result value fed back by the sorting program in S400 to control whether the corresponding electromagnetic pneumatic valve on the nozzle assembly 240 is activated or not. When the material on the feed slide assembly 220 passes the nozzle assembly 240 on the downward path, if it is determined to be the main purified material, the spray valve will not be activated, and the main purified material will flow into the main receiving bin in the receiving bin. When judging impurities, the main control board controls the spray valve to activate, and different impurities enter different receiving bins.

[0092] In this embodiment, the main control board outputs a control signal based on the judgment result value of 0 or 1 fed back from the sorting program in S400 to control whether the electromagnetic control valves corresponding to the specific numbers of the multiple first nozzles 2414 and multiple second nozzles 2424 are activated. When the material on the material chute 2212 passes the nozzle on the downward path, if it is determined to be the main purified material, the spray valve is not activated, and the main purified material flows into the main receiving bin 262. If it is determined to be colored transparent glass, the corresponding numbered electromagnetic valve on the first nozzle assembly 2413 is activated to allow air to pass through the corresponding nozzle hole, blowing the colored transparent glass away from the downward path of the material chute 2212 and rejecting it into the second impurity receiving bin 263. If it is determined to be opaque CSP impurity, the corresponding numbered electromagnetic valve on the second nozzle assembly 242 is activated to allow air to pass through the corresponding nozzle hole, blowing the opaque CSP impurity away from the downward path of the material chute 2212 and rejecting it into the first impurity receiving bin 261.

[0093] S700 runs the selected sorting program combination and cycles through S300 to S600 to complete the material purification and color sorting.

[0094] In this embodiment, after the raw material is fed into the feeding device 100, it passes through the color sorting and separation device 200 to complete the sorting of the main purified material, opaque CSP impurities, and discolored glass when the main purified material is white transparent glass.

[0095] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0096] The above embodiments are merely examples of implementation methods of the invention. The scope of protection of the present invention is not limited to the above embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A method for purifying and sorting rubble glass, characterized in that, The crushed glass purification color sorting device includes a feeding device (100), a color sorting and separation device (200), and an air circuit device (300). The feeding device (100) vibrates and feeds the material to the color sorting and separation device (200). The color sorting and separation device (200) screens the main purified material and impurities in one step. The air circuit device (300) assists the color sorting and separation device (200) in rejecting the judged material and sending it to the corresponding receiving bin. The color sorting device (200) includes a support assembly (210), a feed chute assembly (220) located on the support assembly (210), a linear color CCD camera module (230), a main control board, and a nozzle assembly (240). A three-color LED background light strip assembly (224) is installed on the feed chute assembly (220) to set the background color required for image acquisition when identifying the main purified material and impurities. The linear color CCD camera module (230) is used to acquire the background color displayed by the three-color LED background light strip assembly (224) and the RGB values ​​of the material color pixel by pixel in the same direction as the material flow. The main control board controls the nozzle assembly (240) based on the data acquired by the linear color CCD camera module (230) to screen and remove materials flowing through the outlet of the feed chute assembly (220). The broken glass purification color sorting method includes the following steps: S100, based on the color attributes and light-transmitting characteristics of the main purified material and impurities, the background color of the three-color LED background light strip assembly (224) is set so that the background color is set to a color close to the color of the main purified material, and the close color is also a distinguishing color of the impurities. The monitoring pixel area size of one or more color channels is set in the linear color CCD camera module (230). The sorting program combination, reference value, upper and lower limit value, and nozzle valve delay time in the nozzle assembly (240) are set in the main control board. S200, start the feeding device (100), the material forms a certain angled material flow on the feeding slide assembly (220), flows through the upper surface of the light-transmitting glass (2211), and enters the material image acquisition space area; S300, the linear array color CCD camera module (230) acquires material images in real time along the material flow in the acquisition space area, and acquires the background color and material color RGB values ​​of the three-color LED background light strip assembly (224) pixel by pixel in the horizontal direction, and reads and stores the RGB channel values ​​of the image information into the main control board; S400, the information processing unit of the main control board performs three levels of image value processing on the image information values ​​to establish an original database, a correction database, and an enhancement database; the original database is used for the coarse selection domain logic judgment in the coarse selection mode, the correction database is used for the fine selection domain logic judgment in the fine selection mode, and the enhancement database is used for the strong selection domain logic judgment in the strong selection mode. S500, based on the color characteristics of the main purified material and the pre-rejected material corresponding to the nozzle assembly (240), a sorting combination program of one or more modes of coarse selection mode, fine selection mode and strong selection mode is set; and the combination programs can be selected by "OR logic" or "AND logic"; S600: Based on the judgment result value fed back by the sorting program in S400, the main control board outputs a control signal to control whether the corresponding electromagnetic pneumatic valve on the nozzle assembly (240) is activated or not. When the material on the feed slide assembly (220) passes the nozzle assembly (240) on the downward sliding path, if it is determined to be the main purified material, the spray valve is not activated, and the main purified material flows into the main receiving bin in the receiving bin. When judging impurities, the main control board controls the spray valve to activate, and different impurities enter different receiving bins. S700 runs the selected sorting program combination and cycles through S300 to S600 to complete the material purification and color sorting. In step S400: The raw processing involves constructing a raw database for the RGB channel based on the data collected by the linear color CCD camera module (230). The raw database has a length of the maximum line pixel of the camera multiplied by the size of the monitored pixel area. The correction process involves performing grayscale correction on the data in the original database based on set reference values ​​and upper or lower limits to improve grayscale contrast and form a correction database for that channel. Enhancement processing involves setting reference values ​​and upper or lower limits for the data in the original database, and then performing saturation processing on the data in the original database to increase the color brightness of the channel, thus forming an enhanced database for the channel.

2. The method for purifying and sorting quartz glass according to claim 1, characterized in that, The feed chute assembly (220) includes a feed chute plate (221), a material anti-jump plate (222), and a fine-tuning device (223). The feeding chute (221) and the material anti-jump plate (222) are arranged opposite to each other, forming a material chute (2212) between them. The material chute (2212) is inclined, and the inlet and outlet of the material chute (2212) are from top to bottom, with the inlet being wider and the outlet being narrower. A light-transmitting glass (2211) is provided on the feeding chute (221), and the light-transmitting glass (2211) is located on the opposite side of the material anti-jump plate (222). The fine-tuning device (223) is fixed to the support assembly (210) and hinged to the feed slide plate (221), and can adjust the tilt angle of the material slide (2212); The three-color LED background light strip assembly (224) includes a first three-color LED background light strip assembly (2241) and a second three-color LED background light strip assembly (2242). According to the direction of material sliding, they are located in the feed slide plate (221) and on the back of the light-transmitting glass (2211). The light strip display surface faces the material anti-jump plate (222). The material anti-jump plate (222) is provided with a first rectangular hole and a second rectangular hole (2222) arranged vertically and with a certain misalignment angle. The first rectangular hole and the second rectangular hole (2222) are located diagonally above the tricolor LED backlight strip assembly (224).

3. The method for purifying and sorting quartz glass according to claim 2, characterized in that, The linear array color CCD camera module (230) is on the support component (210) and on the same side as the material anti-jump plate (222). The linear array color CCD camera module (230) includes a fill light component (231), a transparent glass cover (232) and a camera component (233). The camera component (233) is located inside the transparent glass cover (232), the fill light component (231) is located directly above the transparent glass cover (232), and the camera lens of the camera component (233) faces the three-color LED backlight strip component (224), so that the camera lens of the camera component (233) passes through the material slide (2212) area behind the rectangular hole (2222) and the entire three-color LED backlight strip component (224) area to form a material image acquisition space area.

4. The method for purifying and sorting quartz glass according to claim 3, characterized in that, The camera assembly (233) includes a first camera (2331), a second camera (2332), a third camera (2333), and a fourth camera (2334); the first camera (2331) and the third camera (2333) are arranged vertically, the second camera (2332) and the fourth camera (2334) are arranged vertically, and the first camera (2331) and the second camera (2332) are on the same horizontal line, and the third camera (2333) and the fourth camera (2334) are on the same horizontal line; After the camera lenses of the first camera (2331) and the second camera (2332) pass through the first rectangular hole, the image capture area of ​​the material slide (2212) and the entire area of ​​the first three-color LED background light strip assembly (2241) form the first material image acquisition space area. The camera lenses of the third camera (2333) and the fourth camera (2334) pass through the second rectangular hole (2222) and image the material slide (2212) area and the entire second tri-color LED backlight strip assembly (2242) area, forming the second material image acquisition space area.

5. The method for purifying and sorting quartz glass according to claim 4, characterized in that, The object distance between the first camera (2331) and the second camera (2332) is greater than half the overall length of the first rectangular hole and less than the overall length of the first rectangular hole; the object distance between the third camera (2333) and the fourth camera (2334) is greater than half the overall length of the second rectangular hole (2222) and less than the overall length of the second rectangular hole (2222).

6. The method for purifying and sorting quartz glass according to claim 4, characterized in that, The nozzle assembly (240) includes a first nozzle assembly (241) and a second nozzle assembly (242); the first nozzle assembly (241) and the second nozzle assembly (242) are located on both sides of the discharge port of the material chute (2212); the first nozzle assembly (241) and the second nozzle assembly (242) have the same structure and are both connected to the air circuit device (300) and the main control board; The first nozzle assembly (241) includes a first airflow distribution tank (2411), a first air inlet pipe (2412), and a first nozzle component (2413). The two ends of the first air inlet pipe (2412) are respectively connected to the first airflow distribution tank (2411) and the air passage device (300). The first nozzle component (2413) is fixedly connected to the outside of the housing of the first airflow distribution tank (2411). Multiple first nozzles (2414) are provided on the first nozzle component (2413), and each first nozzle (2414) is provided with an electromagnetic control valve and is connected to the first airflow distribution tank (2411) through an air pipe. The electromagnetic control valves are all communicatively connected to the main control board.

7. The method for purifying and sorting quartz glass according to claim 6, characterized in that, The first nozzle (2414) in the first nozzle component (2413) is divided into a first nozzle area and a second nozzle area; the main control board outputs a signal to control whether the first nozzle (2414) in the first nozzle area is active or not, based on the acquisition area result of the first camera (2331); the main control board outputs a signal to control whether the first nozzle (2414) in the second nozzle area is active or not, based on the acquisition area result of the second camera (2332). The second nozzles (2424) on the second nozzle component (2423) in the second nozzle assembly (242) are divided into a third nozzle region and a fourth nozzle region. The main control board outputs a signal to control whether the second nozzles (2424) in the third nozzle region are active or not, based on the acquisition results of the third camera (2333). The main control board outputs a signal to control whether the second nozzles (2424) in the fourth nozzle region are active or not, based on the acquisition results of the fourth camera (2334).

8. The method for purifying and sorting quartz glass according to claim 7, characterized in that, The color sorting and separation device (200) also includes a first fixed baffle plate (251), a second fixed baffle plate (252), a first hopper partition adjustment plate (253), and a second hopper partition adjustment plate (254) that form the material sorting channel; The first fixed baffle (251) is located below the first nozzle assembly (241), the second fixed baffle (252) is located below the second nozzle assembly (242), and the first hopper partition adjustment plate (253) and the second hopper partition adjustment plate (254) are located between the first fixed baffle (251) and the second fixed baffle (252). The first fixed baffle plate (251) and the first hopper partition adjustment plate (253) form the first impurity channel (2513); the first hopper partition adjustment plate (253) and the second hopper partition adjustment plate (254) form the main purification material channel (2534); the second hopper partition adjustment plate (254) and the second fixed baffle plate (252) form the second impurity channel (2542). A first impurity receiving bin (261), a main receiving bin (262), and a second impurity receiving bin (263) are respectively provided at the outlets of the first impurity channel (2513), the main purification material channel (2534), and the second impurity channel (2542).

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