A mixture component on-line detection device and method based on laser induction technology

Abstract

The application discloses a kind of based on laser induction technology's mixed material component on-line detection equipment and method, belong to mixed material component analysis field.The equipment includes sampling device, drying device, crushing device, laser detection device;Sampling device is connected with drying device, and the mixed material obtained is sent to drying device, drying device is connected with crushing device, for carrying out crushing treatment to the mixed material of drying;Laser detection device is used to detect the component of the mixed material of crushing.The on-line detection fast scheme of mixed material component of the application can greatly improve the mixed material test frequency, not only can provide accurate data support for blast furnace operator to predict, control blast furnace condition, but also can become the original driving force of sintering production digital transformation, process capacity improvement.

Description

Technical Field

[0001] This application belongs to the field of mixture composition analysis, specifically relating to an online detection device and method for mixture composition based on laser-induced technology. Background Technology

[0002] As a primary raw material for steelmaking, the chemical composition and physical properties of sinter directly affect the operating conditions of blast furnaces.

[0003] And product quality.

[0004] The sintered ore raw materials are characterized by complex composition and numerous types, with the mixture accounting for as much as 78% of the furnace charge structure. Its quality stability is one of the decisive factors affecting the smooth operation of the blast furnace. In particular, the stability index of the mixture composition directly affects the stability of the blast furnace slag system, and abrupt changes in slag properties are the most common cause of blast furnace condition deterioration. Therefore, maintaining the stability of the mixture composition is key to the stability of the blast furnace slag system and the long-term stable operation of the furnace.

[0005] Currently, the main method for analyzing the composition of sintered ore is to manually or mechanically sample the finished sintered ore and send it to a laboratory for X-ray fluorescence spectroscopy analysis. Due to the lag in the test results, the sintering process may have already changed by then. If on-site operators mechanically adjust the parameters according to the technical specifications, it may lead to more drastic fluctuations in the stability of the sintered ore composition, greatly affecting the quality stability of the finished sintered ore and causing material waste.

[0006] In the current production organization system, the entire process of taking samples of a corresponding batch of mixture, from sample collection to testing, inspection, and reporting, takes at least one hour. If the tested components are abnormal, retesting, reporting, and feedback are required, making the process lengthy, time-consuming, and labor-intensive. This directly affects the timeliness of adjusting the blast furnace burden structure and control parameters, easily leading to furnace condition fluctuations, or even furnace malfunctions or difficulties in operation, due to untimely adjustments. In other words, currently, it takes nearly eight hours from the mixing of the mixture to obtaining accurate chemical composition feedback.

[0007] There is an urgent need to find a device and method for online and accurate detection of the composition of sintered mixtures, so as to quickly and accurately analyze the quality control indicators of the mixtures and realize intelligent batching control of sintered mixtures.

[0008] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0009] Based on the technical problems described in the background, the purpose of this application is to provide an online detection device and method for the composition of mixtures based on laser-induced technology. The rapid online detection solution for the composition of mixtures in this application can significantly increase the frequency of mixture inspection. It can not only provide accurate data support for blast furnace operators to predict and control the blast furnace condition, but also become the driving force for the digital transformation of sintering production and the improvement of process capabilities.

[0010] This application is achieved through the following technical solution:

[0011] An online component detection device for a mixture based on laser-induced technology includes a sampling device, a drying device, a crushing device, and a laser detection device. The sampling device is connected to the drying device to send the obtained mixture to the drying device. The drying device is connected to the crushing device to crush the dried mixture. The laser detection device is used to detect the components of the crushed mixture.

[0012] In some embodiments of this application, the sampling device includes a photoelectric limit switch, a sampling spoon, a sampling rod, a sampler drive motor, a gantry frame, a conveyor belt, a belt base plate, a spring baffle, a receiving hopper, and a discharge pipe;

[0013] In some embodiments of this application, a photoelectric limit switch is used to control the on / off state of the drive motor; the sampling spoon is connected to the sampler drive motor via a sampling rod, and the sampler drive motor rotates the sampling rod and the sampling spoon; the gantry frame is located below the sampler drive motor and is used to fix the sampler drive motor; the spring baffle is connected to the receiving hopper 1 and is used to guide the mixture in the sampling spoon into the receiving hopper 1, and the receiving hopper 1 is connected to the discharge pipe;

[0014] In some embodiments of this application, the sampling device further includes a conveyor belt support leg for supporting the conveyor belt.

[0015] In some embodiments of this application, during the conveyor belt conveying the mixture, the sampling scoop rotates clockwise at a preset speed under the drive of the sampling rod and the sampler drive motor. After the sampling scoop obtains the sampled mixture, the mixture will not spill due to centrifugal force. When the sampling rod passes the photoelectric limit switch, the sampler drive motor is de-energized. Due to inertia, the mixture and the sampling scoop move freely without power. When the sampling scoop collides with the spring baffle, the sampling scoop stops moving. Due to inertia, the mixture is automatically discharged into the receiving hopper and then enters the subsequent drying process through the discharge pipe.

[0016] In some embodiments of this application, the drying device includes a receiving hopper two, a heating tube, an electromagnetic induction heating solenoid, a heating tube bottom door, an electric cylinder, a compressed air pipe, a heating tube fastening device, and a heating tube fixing frame; the heating tube is fixed within the heating tube fixing frame by the heating tube fastening device; the heating tube fastening device is used to fix the heating tube; the receiving hopper two is used to receive the mixture conveyed from the sampling device's discharge pipe; the electromagnetic induction heating solenoid is wound around the outer wall of the heating tube and is used to heat and dry the mixture inside the heating tube; the heating tube bottom door can introduce compressed air through the compressed air pipe.

[0017] The compressed air increases the drying speed; the electric cylinder is used to control the opening and closing of the bottom door of the heating tube.

[0018] In some embodiments of this application, the inner diameter of the electromagnetic induction heating solenoid coil is 120mm, the outer diameter of the heating tube is 100mm, the mixture is placed in the center, the total height of the heating tube is 200mm, the height of the receiving hopper is 50mm, and the upper part of the heating tube is clamped and fixed by the heating tube fastening device in four directions.

[0019] In some embodiments of this application, the mixture taken by the sampling device enters the heating tube fixed by the heating tube fastening device through the receiving hopper 2; the mixture is scattered at the bottom of the heating tube, the heating tube is heated by the electromagnetic induction heating solenoid, and compressed air is blown in from the bottom heating tube bottom door to improve the drying speed; after drying, the mixture enters the crushing device after the heating tube bottom door is opened by the electric cylinder.

[0020] In some embodiments of this application, the crushing device includes a receiving hopper three, a double-roll crusher, a double-roll gap adjustment device, a vertical vibrating feeder, a disc crusher, a belt conveyor, and a collection bucket. The receiving hopper three receives the mixed material discharged from the bottom gate of the heating pipe. The double-roll crusher is located below the receiving hopper three. The mixed material drawn from the receiving hopper three enters the double-roll crusher and is crushed to a preset particle size. The double-roll gap adjustment device adjusts the gap between the double-roll crushers according to the target crushing particle size. The vertical vibrating feeder is located below the double-roll crusher. The mixed material crushed by the double-roll crusher is collected in the vertical vibrating feeder. The disc crusher is located at the mixed material outlet of the vertical vibrating feeder and crushes the mixed material fed by the vertical vibrating feeder. The belt conveyor is used to transport the mixed material crushed by the disc crusher to the collection bucket.

[0021] In some embodiments of this application, the mixture is crushed by a double roll crusher and then falls into a vertical vibrating feeder. After the mixture falls rapidly into the vertical vibrating feeder, the vertical vibrating feeder slowly feeds the mixture into a disc crusher. The mixture is crushed to about 100 mesh and discharged onto a belt conveyor. The belt conveyor transports the crushed mixture to a collection bucket.

[0022] In some embodiments of this application, a laser detection device is located above the belt conveyor and is used to detect the mixture during the process of the belt conveyor transporting the crushed mixture to the collection bucket in order to determine the composition of the mixture.

[0023] In some embodiments of this application, the detection device further includes a vacuum diaphragm pump, a silo pump feed valve, a silo pump pressure relief valve, and a silo pump air inlet valve; the vacuum diaphragm pump is connected to the collection tank and is used to extract the mixture in the collection tank and send it to the silo pump through the silo pump feed valve.

[0024] In other embodiments of this application, an online detection method for mixture components based on laser-induced technology is also provided, which uses the above-mentioned equipment and includes the following steps:

[0025] (1) Sampling steps: The sampling spoon rotates clockwise at a preset speed under the drive of the sampling rod and the sampler drive motor. After the sampling spoon obtains the sampled mixture, the mixture will not spill due to the centrifugal force. When the sampling rod passes the photoelectric limit switch, the sampler drive motor is de-energized. Due to inertia, the mixture and the sampling spoon move freely without power. When the sampling spoon collides with the spring baffle, the sampling spoon stops moving. Due to inertia, the mixture is automatically discharged and enters the receiving hopper one. Then, it enters the subsequent drying steps through the discharge pipe.

[0026] (2) Drying step: The mixture taken by the sampling device enters the heating tube fixed by the heating tube fastening device through the second receiving hopper; the mixture is scattered at the bottom of the heating tube, and the heating tube is heated by the electromagnetic induction heating solenoid. At the same time, compressed air is blown in from the bottom door of the heating tube to increase the drying speed; after drying, the mixture falls into the third receiving hopper after the bottom door of the heating tube is opened by the electric cylinder.

[0027] (3) Crushing steps: The dried mixture falling into the receiving hopper three then enters the double roll crusher; after being crushed by the double roll crusher, the mixture falls into the vertical vibrating feeder; after falling into the vertical vibrating feeder, the vertical vibrating feeder feeds the mixture into the disc crusher, where the mixture is crushed again and discharged onto the belt conveyor, which slowly transports the crushed mixture into the collection bucket;

[0028] (4) Laser detection steps: During the conveying process, the belt conveyor slowly transports the crushed mixture to the collection bucket. The mixture is quickly detected by the laser detection device to determine the composition of the mixture. The inspected mixture is sent into the collection bucket in batches.

[0029] In other embodiments of this application, the mixed powder in the collection bucket is extracted by a vacuum diaphragm pump and sent to a silo pump.

[0030] Compared with the prior art, this application has at least the following beneficial effects:

[0031] The detection equipment and method described in this application overcome the drawbacks of traditional methods such as machine sampling and manual sample delivery to testing and analysis centers, which are time-consuming and labor-intensive. This technology is easy to operate, enabling real-time in-situ analysis; it requires no sample preparation and can simultaneously detect multiple elements; it requires a small sample volume, allowing for almost non-destructive testing. It also enables long-distance detection. The applicant is currently developing...

[0032] During the process, it was found that large lumps of the mixture affected the penetration ability of the laser-induced breakdown spectrum, and that the moisture content had a significant impact on the test results. An innovative drying device, rapid sampling, and crushing device were designed to make the test data faster, more accurate, and more convenient. This application enables real-time online qualitative and quantitative analysis of various elements, solving the shortcomings of traditional detection methods that are "offline-lagging-manual." It can perform real-time component detection of the mixture, quickly detecting the elemental composition of various substances, achieving intelligent and precise batching, and ensuring the basicity stability of the sinter. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the sampling device according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the receiving hopper and the discharge pipe in an embodiment of this application;

[0036] Figure 3 This is a front view of the drying apparatus according to an embodiment of this application;

[0037] Figure 4 This is a top view of the drying apparatus according to an embodiment of this application;

[0038] Figure 5 This is a schematic diagram of the crushing device according to an embodiment of this application;

[0039] Figure 6 This is a diagram of the device assembly according to an embodiment of this application; Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0041] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or relative positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and for simplification, 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. Therefore, they should not be construed as limitations on this application. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in practical applications, provided that the relative positional relationships shown in the accompanying drawings are satisfied.

[0042] 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, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "connection" are used interchangeably.

[0044] The terms "connection" and "connection" should be interpreted broadly, encompassing fixed connections, detachable connections, and integrated connections. They can also refer to direct connections.

[0045] The connection can be made directly or indirectly through an intermediate medium. It can be a connection within two components or an electrical connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] It should be noted that in practical applications, due to limitations in equipment precision or installation errors, achieving absolute parallelism or perpendicularity is difficult. The descriptions of perpendicularity, parallelism, or unidirectional orientation in this application are not absolute limitations, but rather indicate that perpendicular or parallel structural settings can be achieved within a preset error range (e.g., a vertical deviation of 5°) to achieve the corresponding preset effects. This maximizes the technical effect of the defined features and makes the corresponding technical solution easy to implement, demonstrating high feasibility.

[0047] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0048] In the embodiments of this application, the words "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0049] In some embodiments of this application, an online detection device for the composition of a mixture based on laser-induced technology includes a sampling device, a drying device, a crushing device 19, and a laser detection device 28. The sampling device is connected to the drying device to send the obtained mixture to the drying device. The drying device is connected to the crushing device 19 to crush the dried mixture. The laser detection device 28 is used to detect the composition of the crushed mixture.

[0050] In some embodiments of this application, the sampling device includes a photoelectric limit switch 1, a sampling spoon 2, a sampling rod 3, a sampler drive motor 4, a gantry frame 5, a conveyor belt 7, a belt bottom plate 9, a spring baffle 10, a receiving hopper 11, and a discharge pipe 34.

[0051] In some embodiments of this application, the photoelectric limit switch 1 is used to control the on / off state of the drive motor; the sampling spoon 2 is connected to the sampler drive motor 4 via the sampling rod 3, and the sampler drive motor 4 rotates the sampling rod 3 and the sampling spoon 2; the gantry frame 5 is located below the sampler drive motor 4 and is used to fix the sampler drive motor 4; the spring baffle 10 is connected to the receiving hopper 11 and is used to guide the mixture in the sampling spoon 2 into the receiving hopper 11, and the receiving hopper 11 is connected to the discharge pipe 34;

[0052] In some embodiments of this application, the sampling device further includes a conveyor belt support leg 8, which is used for...

[0053] 7. Support conveyor belt.

[0054] In some embodiments of this application, the sampling device further includes a belt base plate 9, which serves to fix the belt conveyor support leg 8.

[0055] In some embodiments of this application, during the process of conveying the mixture by the conveyor belt 7, the sampling spoon 2 rotates clockwise at a preset speed under the drive of the sampling rod 3 and the sampler drive motor 4. After the sampling spoon 2 obtains the sampled mixture, the mixture will not spill due to the presence of centrifugal force. When the sampling rod 3 passes the photoelectric limit switch 1, the sampler drive motor 4 is de-energized. Due to inertia, the mixture and the sampling spoon 2 move freely without power. When the sampling spoon 2 collides with the spring baffle 10, the sampling spoon 2 stops moving. Due to inertia, the mixture is automatically discharged and enters the receiving hopper 11, and then enters the subsequent drying process through the discharge pipe 34.

[0056] In some embodiments of this application, the drying device includes a receiving hopper 12, a heating tube, an electromagnetic induction heating solenoid 14, a heating tube bottom door 16, an electric cylinder 24, a compressed air pipe 25, a heating tube fastening device 13, and a heating tube fixing frame 15. The heating tube is fixed within the heating tube fixing frame 15 by the heating tube fastening device 13. The heating tube fastening device 13 is used to fix the heating tube. The receiving hopper 12 is used to receive the mixture conveyed from the sampling device discharge pipe 34. The electromagnetic induction heating solenoid 14 is wound around the outer wall of the heating tube and is used to heat and dry the mixture inside the heating tube. The heating tube bottom door 16 can introduce compressed air through the compressed air pipe 25 to improve the drying speed. The electric cylinder 24 is used to control the opening and closing of the heating tube bottom door 16.

[0057] In some embodiments of this application, the inner diameter of the electromagnetic induction heating solenoid 14 coil is 120mm, the outer diameter of the heating tube is 100mm, the mixture is placed in the center, the total height of the heating tube is 200mm, the height of the receiving hopper 2 12 is 50mm, and the upper part of the heating tube is clamped and fixed by the heating tube fastening device 13 in four directions.

[0058] In some embodiments of this application, the mixture taken by the sampling device enters the heating tube fixed by the heating tube fastening device 13 through the receiving hopper 2 12; the mixture is scattered at the bottom of the heating tube, the heating tube is heated by the electromagnetic induction heating solenoid 14, and compressed air is blown in from the bottom heating tube bottom door to improve the drying speed; after drying, the mixture enters the crushing device 19 after the heating tube bottom door 16 is opened by the electric cylinder 24.

[0059] In some embodiments of this application, the crushing device 19 includes a receiving hopper 17, a double-roll crusher 18, a double-roll gap adjustment device 26, a vertical vibrating feeder 20, a disc crusher 21, a belt conveyor 22, and a collection bucket 29. The receiving hopper 17 receives the mixture discharged from the bottom gate 16 of the heating pipe. The double-roll crusher 18 is located below the receiving hopper 17. The mixture drawn from the receiving hopper 17 enters the double-roll crusher 18 and is crushed to a preset particle size. The double-roll gap adjustment device 26 adjusts the gap between the double-roll crushers according to the target crushing particle size. The vertical vibrating feeder 20 is located below the double-roll crusher 18. The mixture crushed by the double-roll crusher 18 is collected in the vertical vibrating feeder 20. The disc crusher 21 is located at the mixture outlet of the vertical vibrating feeder 20 and crushes the mixture fed by the vertical vibrating feeder 20. The belt conveyor 22 is used to transport the mixture crushed by the disc crusher 21.

[0060] Mix the materials and transfer them to the collection bucket 29.

[0061] In some embodiments of this application, after the mixture is crushed by the double roll crusher 18, it falls into the vibrating feeder 20. After the mixture falls quickly into the vibrating feeder 20, the vibrating feeder 20 slowly feeds the mixture into the disc crusher 21. The mixture is crushed to about 100 mesh and discharged onto the belt conveyor 22. The belt conveyor 22 transports the crushed mixture into the collection bucket 29.

[0062] In some embodiments of this application, a concrete foundation is provided below the crushing device to provide support and shock absorption.

[0063] In some embodiments of this application, a laser detection device 28 is located above the belt conveyor 22 and is used to detect the mixture during the process of the belt conveyor 22 conveying the crushed mixture to the collection bucket 29 to determine the composition of the mixture.

[0064] In some embodiments of this application, the detection device further includes a vacuum diaphragm pump 30, a silo pump feed valve 31, a silo pump pressure relief valve 32, and a silo pump air inlet valve 33; the vacuum diaphragm pump 30 is connected to the collection bucket 29 and is used to extract the mixture in the collection bucket 29 and send it to the silo pump through the silo pump feed valve 31.

[0065] In other embodiments of this application, an online detection method for mixture components based on laser-induced technology is also provided, which uses the above-mentioned equipment and includes the following steps:

[0066] (1) Sampling steps: Under the drive of sampling rod 3 and sampler drive motor 4, sampling spoon 2 rotates clockwise at a preset speed at a set time. After sampling spoon 2 obtains the sampled mixture, the mixture will not spill due to centrifugal force. When sampling rod 3 passes photoelectric limit switch 1, sampler drive motor 4 is de-energized. Due to inertia, the mixture and sampling spoon 2 move freely without power. When sampling spoon 2 collides with spring baffle 10, sampling spoon 2 stops moving. Due to inertia, the mixture is automatically discharged and enters receiving hopper 11. Then, it enters the subsequent drying steps through drop pipe 34.

[0067] (2) Drying step: The mixture taken by the sampling device enters the heating tube fixed by the heating tube fastening device 13 through the receiving hopper 2 12; the mixture is scattered at the bottom of the heating tube, and the heating tube is heated by the electromagnetic induction heating solenoid 14. At the same time, compressed air is blown in from the bottom door of the heating tube to increase the drying speed; after drying, the mixture falls into the receiving hopper 3 17 after the heating tube bottom door 16 is opened by the electric cylinder 24.

[0068] (3) Crushing steps: The dried mixture falling into the receiving hopper 17 then enters the double roll crusher 18; after being crushed by the double roll crusher 18, the mixture falls into the vibrating feeder 20; after falling into the vibrating feeder 20, the vibrating feeder 20 feeds the mixture into the disc crusher 21, where the mixture is crushed again and discharged onto the belt conveyor 22, which slowly conveys the crushed mixture into the collection bucket 29;

[0069] (4) Laser detection steps: During the conveying process of the belt conveyor 22 slowly conveying the crushed mixture to the collection bucket 29, the mixture is quickly detected by the laser detection device 28 and the composition of the mixture is determined; the inspected mixture is sent into the collection bucket 29 batch by batch.

[0070] In some embodiments of this application, the mixed powder in the collection bucket 29 is extracted by the vacuum diaphragm pump 30 and sent to the silo pump, and the material in the silo pump is sent into the secondary mixer by compressed air.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An online detection device for mixture components based on laser-induced technology, characterized in that, It includes a sampling device, a drying device, a crushing device, and a laser detection device; the sampling device is connected to the drying device to send the obtained mixture to the drying device, and the drying device is connected to the crushing device to crush the dried mixture; the laser detection device is used to detect the composition of the crushed mixture. The sampling device includes a photoelectric limit switch, a sampling spoon, a sampling rod, a sampler drive motor, a gantry frame, a conveyor belt, a belt base plate, a spring baffle, a receiving hopper, and a discharge pipe. The photoelectric limit switch controls the on / off state of the sampler drive motor. The sampling spoon is connected to the sampler drive motor via the sampling rod, and the sampler drive motor rotates the sampling rod and the sampling spoon. The gantry frame is located below the sampler drive motor and is used to fix the sampler drive motor. The spring baffle is connected to the receiving hopper and is used to guide the mixture in the sampling spoon into the receiving hopper. The receiving hopper is connected to the discharge pipe.

2. An online detection device for mixture components based on laser-induced technology, characterized in that, It includes a sampling device, a drying device, a crushing device, and a laser detection device; the sampling device is connected to the drying device to send the obtained mixture to the drying device, and the drying device is connected to the crushing device to crush the dried mixture; the laser detection device is used to detect the composition of the crushed mixture. The drying device includes a second receiving hopper, a heating tube, an electromagnetic induction heating solenoid, a bottom door for the heating tube, an electric cylinder, a compressed air pipe, a heating tube fastening device, and a heating tube fixing frame. The heating tube is fixed within the heating tube fixing frame by the heating tube fastening device. The heating tube fastening device is used to fix the heating tube. The second receiving hopper is used to receive the mixture conveyed from the sampling device's discharge pipe. The electromagnetic induction heating solenoid is wound around the outer wall of the heating tube and is used to heat and dry the mixture inside the heating tube. The bottom door of the heating tube can introduce compressed air through the compressed air pipe to improve the drying speed. The electric cylinder is used to control the opening and closing of the bottom door of the heating tube.

3. The online detection device for mixture components based on laser-induced technology according to claim 2, characterized in that, The electromagnetic induction heating solenoid coil has an inner diameter of 120mm and an outer diameter of 100mm. The mixture is placed in the center, the total height of the heating tube is 200mm, the height of the receiving hopper is 50mm, and the upper part of the heating tube is clamped and fixed in four directions by the heating tube fastening device.

4. An online detection device for mixture components based on laser-induced technology, characterized in that, It includes a sampling device, a drying device, a crushing device, and a laser detection device; the sampling device is connected to the drying device to send the obtained mixture to the drying device, and the drying device is connected to the crushing device to crush the dried mixture; the laser detection device is used to detect the composition of the crushed mixture. The crushing device includes a receiving hopper three, a double-roll crusher, a double-roll gap adjustment device, a vertical vibrating feeder, a disc crusher, a belt conveyor, and a collection bucket. The receiving hopper three receives the mixed material discharged from the bottom gate of the heating pipe. The double-roll crusher is located below the receiving hopper three. The mixed material drawn from the receiving hopper three enters the double-roll crusher and is crushed to a preset particle size. The double-roll gap adjustment device adjusts the gap between the double-roll crushers according to the target crushing particle size. The vertical vibrating feeder is located below the double-roll crusher. The mixed material crushed by the double-roll crusher is collected in the vertical vibrating feeder. The disc crusher is located at the mixed material outlet of the vertical vibrating feeder and crushes the mixed material fed by the vertical vibrating feeder. The belt conveyor is used to transport the mixed material crushed by the disc crusher to the collection bucket.

5. The online detection device for mixture components based on laser-induced technology according to claim 4, characterized in that, After being crushed by the double roll crusher, the mixture falls into the vibrating feeder. After the mixture falls quickly into the vibrating feeder, the vibrating feeder slowly feeds the mixture into the disc crusher. The mixture is crushed to about 100 mesh and discharged onto the belt conveyor. The belt conveyor transports the crushed mixture to the collection bucket.

6. The online detection device for mixture components based on laser-induced technology according to claim 4, characterized in that, A laser detection device is located above the belt conveyor and is used to detect the mixture during the process of the belt conveyor transporting the crushed mixture to the collection bucket in order to determine the composition of the mixture.

7. The online detection device for mixture components based on laser-induced technology according to claim 4, characterized in that, The testing equipment also includes a vacuum diaphragm pump, a silo pump feed valve, a silo pump pressure relief valve, and a silo pump air inlet valve; the vacuum diaphragm pump is connected to the collection tank and is used to extract the mixture in the collection tank and send it to the silo pump through the silo pump feed valve.

8. An online detection device for mixture components based on laser-induced technology according to claim 1, 2, or 4, characterized in that, The laser detection device is a laser-induced breakdown spectrometer.

9. A method for online detection of mixture components based on laser-induced technology, characterized in that, Using the online detection device according to any one of claims 1-8; specifically including the following steps: (1) Sampling step: the sampling spoon rotates clockwise at a preset speed under the drive of the sampling rod and the driving of the sampler drive motor. After the sampling spoon obtains the mixture, the mixture will not spill due to the presence of centrifugal force. When the sampling rod passes the photoelectric limit switch, the sampler drive motor is de-energized. Due to inertia, the mixture and the sampling spoon move freely without power. When the sampling spoon collides with the spring baffle, the sampling spoon stops moving. Due to inertia, the mixture is automatically discharged and enters the receiving hopper one. Then, it enters the subsequent drying step through the drop pipe. (2) Drying step: the mixture taken by the sampling device enters the heating tube fixed by the heating tube fastening device through the receiving hopper two. The mixture is scattered at the bottom of the heating tube. The heating tube is heated by the electromagnetic induction heating solenoid. At the same time, compressed air is blown in from the bottom door of the heating tube to increase the drying speed. After the dried mixture is opened by the electric cylinder driving the bottom door of the heating tube, the mixture falls into the receiving hopper three. (3) Crushing step: The dried mixture falling into the receiving hopper then enters the double roll crusher; after being crushed by the double roll crusher, the mixture falls into the vibrating feeder; after falling into the vibrating feeder, the vibrating feeder feeds the mixture into the disc crusher, where the mixture is crushed again and discharged onto the belt conveyor, which slowly conveys the crushed mixture into the collection bin; (4) Laser detection step: During the conveying process where the belt conveyor slowly conveys the crushed mixture into the collection bin, the mixture is quickly detected by the laser detection device to determine the composition of the mixture; the inspected mixture is sent into the collection bin in batches.

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