Spectral analysis device and on-line detection system

Abstract

The invention discloses a spectroscopic analysis device and an online detection system, the spectroscopic analysis device comprises a calibration part, a detection part and a cleaning mechanism, the detection part is used for obtaining spectroscopic data of to-be-detected minerals; the cleaning mechanism comprises an air supply part, a first purging part and a second purging part, and the first purging part and the second purging part communicate with the air supply part; the first purging part is provided with a first purging port, and the first purging port is arranged opposite to the calibration part and used for purging the calibration part; the second purging part is provided with a second purging port, and the second purging port is connected with the detection part and used for purging the detection part. By adopting the scheme, the calibration part and the detection part can be efficiently cleaned, and the spectroscopic analysis device does not need to be shut down in the cleaning process, so that the detection efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spectroscopy analysis, and particularly to a spectroscopy analysis device and an online detection system. BACKGROUND

[0002] The spectroscopy analysis technology has been widely applied in material analysis, industrial quality inspection, food processing and other fields due to its advantages of rapid, non-destructive and accurate detection. The core working principle of spectroscopy analysis devices such as spectrometer and energy spectrometer is to emit light of a specific wavelength by a light source, irradiate the object to be measured after calibration by a calibration component, and then collect spectroscopy signals by a receiving component to realize the detection of parameters such as composition and content of the object.

[0003] In actual application scenarios, especially in the working condition with a lot of dust, the calibration component, emission component and receiving component of the spectroscopy analysis device will inevitably adsorb a lot of dust and other pollutants due to exposure to the external environment, which is easy to cause errors in the calibration process and detection process of the spectroscopy analysis device, and reduces the detection accuracy. In related technologies, the spectroscopy analysis device is usually cleaned manually, and manual cleaning needs to be operated in a stopped state, which has a great impact on the detection efficiency. SUMMARY

[0004] The present application discloses a spectroscopy analysis device and an online detection system to solve the problem that the spectroscopy analysis device in related technologies uses manual cleaning, which has a great impact on the detection efficiency.

[0005] To solve the above technical problems, the present application is implemented as follows: In a first aspect, the present application discloses a spectroscopy analysis device, which comprises a calibration component, a detection component and a cleaning mechanism, and the detection component is used to obtain spectroscopy data of a mineral to be measured. The cleaning mechanism comprises a gas supply component, a first blowing component and a second blowing component, and the first blowing component and the second blowing component are respectively in communication with the gas supply component. The first blowing component has a first blowing port, and the first blowing port is arranged opposite to the calibration component and is used to blow the calibration component. The second blowing component has a second blowing port, and the second blowing port is connected with the detection component and is used to blow the detection component.

[0006] Optionally, the spectroscopy analysis device further comprises a driving component connected with the calibration component, which is used to drive the calibration component to reciprocate relative to the first blowing port, so that the first blowing port blows different areas on the surface of the calibration component.

[0007] Optionally, the spectroscopic analysis device further includes a stage having a first side and a second side facing away from each other, the detection unit being disposed on the first side, the calibration unit being located on the second side, and the driving unit being connected to the stage; The stage is provided with a light-transmitting hole connecting the first side and the second side, and the detection port of the detection unit faces the light-transmitting hole; When the calibration part is in the first position, the calibration part covers the light-transmitting hole; when the calibration part is in the second position, the calibration part avoids the light-transmitting hole, so that the detection part can acquire the spectroscopic data of the object under test below the stage.

[0008] Optionally, the platform is provided with a clearance hole connecting the first side and the second side, the first blowing part is connected to the platform, and a part of the structure of the first blowing part passes through the clearance hole, and the first blowing port is located close to the second side; When the calibration unit switches between the first position and the second position, the first purging port is used to purge different areas on the surface of the calibration unit.

[0009] Optionally, the gas supply unit includes a gas source and a sub-control valve, wherein the sub-control valve includes a valve body, a first valve core, and a second valve core; The valve body is provided with an air inlet and a first air passage and a second air passage respectively connected to the air inlet. The air source is connected to the air inlet. The first air passage is connected to the first purging part. A portion of the structure of the first valve core is disposed in the first air passage for controlling the opening or closing of the first air passage. The second air passage is connected to the second purging part. A portion of the structure of the second valve core is disposed in the second air passage for controlling the opening or closing of the second air passage.

[0010] Optionally, the driving unit is a cylinder, and the actuating part of the cylinder is connected to the calibration unit; The valve body is also provided with a third air passage. One end of the third air passage is connected to the air inlet, and the other end of the third air passage is connected to the cylinder. The air source cooperates with the cylinder to drive the calibration part to reciprocate relative to the first purge port. The control valve also includes a third valve core, which is partially located within the third air passage and is used to control the opening or closing of the third air passage.

[0011] Optionally, the first purging unit includes a first purging pipe and an air knife, one end of the first purging pipe is connected to the air supply unit, the other end of the first purging pipe is connected to the air inlet of the air knife, and the first purging port is located on the side of the air knife.

[0012] Optionally, the second purging unit includes a second purging pipe and a plurality of connecting members. One end of the second purging pipe is connected to the air supply unit, and the plurality of connecting members are respectively connected to the other end of the second purging pipe. The connecting members are provided with the second purging port. The detection unit includes a cover and a light emitting unit and a light receiving unit disposed within the cover. One end of the cover is provided with a detection port. The light emitting unit is used to emit detection light rays to the mineral to be tested through the detection port, and the light receiving unit is used to receive the detection return light rays that enter from the detection port. The plurality of the connecting members extend into the housing to purge at least one of the light emitting part and the light receiving part.

[0013] Optionally, the plurality of connecting members include a first connecting member and a plurality of second connecting members. The first connecting member passes through a first mounting hole on the cover and extends into the second mounting space. The first connecting member is disposed opposite to the light-transmitting member to purge the light-emitting surface of the light-transmitting member. The second connecting member passes through a second mounting hole on the cover and extends into the second mounting space to purge the receiving surface of the light-receiving part.

[0014] Optionally, the second installation space is provided with a manifold cavity, and a plurality of second connecting members are respectively connected to the manifold cavity; The number of light receivers is multiple, and the multiple light receivers are arranged at intervals around the circumference of the cover. The confluence cavity is provided with multiple diversion air channels, and the diversion air channels are arranged opposite to the light receivers so that the gas in the confluence cavity is blown to the receiving surface of the light receivers through the diversion air channels.

[0015] Secondly, this application discloses an online detection system, which includes a transmission device and the spectroscopic analysis device described in the first aspect. The transmission device is used to transmit the mineral to be tested to the detection area of ​​the detection unit.

[0016] The technical solution adopted in this application can achieve the following technical effects: The spectroscopic analysis device and online detection system disclosed in this application improve upon related technologies by adding a cleaning mechanism to the spectroscopic analysis device. This cleaning mechanism includes an air supply unit, a first purging unit, and a second purging unit, which are respectively connected to the air supply unit. The calibration unit can be purged using the first purging port of the first purging unit, and the detection unit can be purged using the second purging port of the second purging unit, thereby achieving efficient cleaning of both the calibration and detection units. Furthermore, the spectroscopic analysis device does not need to be stopped during the cleaning process, thus improving detection efficiency. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the spectroscopic analysis device disclosed in the embodiments of this application; Figure 2 This is a schematic diagram of the assembly structure of the drive unit, calibration unit, and air knife disclosed in the embodiments of this application; Figure 3 This is a schematic diagram of the gas supply unit disclosed in the embodiments of this application; Figure 4 This is a schematic diagram of the detection unit disclosed in the embodiments of this application; Figure 5 This is a cross-sectional view of the detection unit disclosed in an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures: 100-Calibration section, 200-Detection section, 201-Detection port, 210-Cover, 211-First mounting space, 212-Second mounting space, 213-Diverter air duct, 220-Light emitting section, 221-Light transmitting element, 222-Light source, 230-Light receiving section, 300-Cleaning mechanism, 310-Air supply section, 311-Air source, 312-Diverter control valve, 3121-Valve body, 312 2-First valve core, 3123-Second valve core, 3124-Air vent, 3125-First air passage, 3126-Second air passage, 3127-Third air passage, 3128-Third valve core, 320-First purging unit, 321-Air knife, 330-Second purging unit, 331-Connecting part, 3311-First connecting part, 3312-Second connecting part, 400-Drive unit, 500-Platform. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more.

[0021] The technical solutions disclosed in the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0022] Please refer to Figures 1 to 5 This application discloses a spectroscopic analysis device that can be applied to fields such as materials analysis, industrial quality inspection, and food processing. In this embodiment, the spectroscopic analysis device can be applied to a coal detection system to detect and analyze samples such as coal mines and iron ore.

[0023] The aforementioned spectroscopic analysis apparatus may include a calibration unit 100, a detection unit 200, and a cleaning mechanism 300. The detection unit 200 internally houses an emitting element and a receiving element. The emitting element primarily emits detection light (e.g., X-rays, infrared light) towards the mineral to be tested, while the receiving element primarily receives the light reflected back from the mineral, thereby acquiring the spectroscopic data of the mineral and, consequently, parameters such as its composition. The core function of the calibration unit 100 is to provide a reference. It typically has a calibration surface with known optical properties (e.g., a standard white plate; the calibration surface is the surface of the calibration unit 100 facing the detection unit 200). In calibration mode, the detection unit 200 measures the calibration surface, and the obtained data can be used as calibration parameters for subsequent processing and correction of the spectroscopic data of the mineral to be tested, thereby reducing measurement errors caused by changes in the instrument's own state.

[0024] The cleaning mechanism 300 is crucial for ensuring the continuous and reliable operation of the two components mentioned above. The cleaning mechanism 300 may include an air supply unit 310, a first purging unit 320, and a second purging unit 330. The first purging unit 320 and the second purging unit 330 may be connected to the air supply unit 310 via pipelines, and the air supply unit 310 shall supply dry and clean gas (such as compressed air or nitrogen) for cleaning.

[0025] The first purging unit 320 has a first purging port, which is disposed opposite to the calibration unit 100, specifically opposite to the calibration surface of the calibration unit 100. When the air supply unit 310 supplies air to the first purging unit 320, the airflow is ejected from the first purging port and blown directly onto the calibration unit 100, thereby blowing away contaminants such as dust and moisture adhering to it to maintain cleanliness.

[0026] The second purging unit 330 has a second purging port, which can be connected to the detection unit 200. When the air supply unit 310 supplies air to the second purging unit 330, the airflow can be ejected from the second purging port to purge and clean the surface of optical components (such as lenses, fiber optic receivers, etc.) in the detection unit 200, preventing contaminants from affecting the transmission and reception of optical signals.

[0027] As described above, the spectroscopic analysis device disclosed in this application improves upon related technologies by adding a cleaning mechanism 300. The cleaning mechanism 300 includes an air supply unit 310, a first purging unit 320, and a second purging unit 330, which are respectively connected to the air supply unit 310. The calibration unit 100 can be purged using the first purging port of the first purging unit 320, and the detection unit 200 can be purged using the second purging port of the second purging unit 330, thereby achieving efficient cleaning of both the calibration unit 100 and the detection unit 200. Furthermore, the spectroscopic analysis device does not need to be stopped during the cleaning process, which further improves detection efficiency.

[0028] In an optional embodiment of this application, the aforementioned spectroscopic analysis device may further include a drive unit 400, which may be a cylinder, a motor, or the like. The drive unit 400 is connected to the calibration unit 100 and can drive the calibration unit 100 to reciprocate relative to the first purge port. For example, the drive unit 400 can move the calibration unit 100 horizontally. When the calibration unit 100 moves relative to the first purge port, the area purged by the originally fixed first purge port changes on the calibration unit 100, allowing the first purge port to purge different areas of the calibration unit 100 surface. Through a complete reciprocating cycle, the airflow from the first purge port can sweep across most or even all of the calibration unit 100 surface, achieving uniform and thorough cleaning of the calibration unit 100 and resulting in better cleaning performance.

[0029] In this embodiment, the spectroscopic analysis apparatus may further include a stage 500, which has a first side and a second side facing away from each other. A detection unit 200 may be located on the first side of the stage 500, and a calibration unit 100 may be located on the second side of the stage 500. A drive unit 400 is connected to the stage 500. The stage 500 is provided with a light-transmitting hole connecting the first side and the second side. The detection port 201 of the detection unit 200 may be oriented towards the light-transmitting hole, so that the detection light emitted by the detection unit 200 can be directed through the light-transmitting hole to the calibration unit 100 or the mineral to be tested. Optionally, the optical axis of the detection unit 200 may be collinear with the axial direction of the light-transmitting hole, so that the detection light emitted by the detection unit 200 can be smoothly emitted through the light-transmitting hole.

[0030] In this embodiment, the calibration unit 100 has a first position and a second position, and the driving unit 400 can drive the calibration unit 100 to switch between the first position and the second position. When the calibration unit 100 is in the first position, the calibration unit 100 covers the light-transmitting aperture, and the detection unit 200 can be used to cooperate with the calibration unit 100 to obtain calibration data for subsequent processing and correction of the spectroscopic data of the mineral to be tested; when the calibration unit 100 is in the second position, the calibration unit 100 avoids the light-transmitting aperture, so that the detection unit 200 can obtain the spectroscopic data of the mineral to be tested below the stage 500.

[0031] The above design integrates the calibration and detection optical paths through a single light-transmitting aperture, resulting in a compact structure. The calibration unit 100 is movably concealed beneath the stage 500, minimizing its footprint in the detection space.

[0032] To enable the first purging unit 320 to purge the calibration unit 100 located on the second side of the stage 500, in an optional embodiment of this application, the stage 500 is provided with a clearance hole connecting the first side and the second side (the clearance hole is located below the position of the first purging unit 320, not shown in the figure). The first purging unit 320 is connected to the stage 500, and a portion of the structure of the first purging unit 320 passes through the clearance hole. The first purging port is located close to the second side. When the calibration unit 100 switches between the first position and the second position, the first purging port can purge different areas of the surface of the calibration unit 100.

[0033] Optionally, the aforementioned air supply unit 310 may include an air source 311 and a sub-control valve 312. The air source 311 may be a gas storage tank, a high-pressure gas cylinder, a blower, an air pump, or other similar structures. The sub-control valve 312 includes a valve body 3121, a first valve core 3122, and a second valve core 3123. The valve body 3121 is provided with a vent 3124, which can be connected to the air source 311 via an air supply pipeline. The valve body 3121 also has a first air passage 3125 and a second air passage 3126 inside, which are respectively connected to the vent 3124. The outlet of the first air passage 3125 can be connected to the first purging unit 320 via a pipeline, and part of the structure of the first valve core 3122 (such as the valve stem and valve ball) is disposed within the first air passage 3125. By controlling the first valve core 3122 (such as a solenoid valve, manual valve, or pneumatic valve), the first air passage 3125 can be opened or closed, thereby controlling whether air is supplied to the first purging section 320.

[0034] Similarly, the outlet of the second air passage 3126 can be connected to the second purging unit 330 through a pipeline. Part of the structure of the second valve core 3123 is disposed in the second air passage 3126 to control the opening or closing of the second air passage 3126, thereby controlling whether air is supplied to the second purging unit 330.

[0035] By setting the separate control valve 312, the air supply to the first purging section 320 and the second purging section 330 can be controlled independently and precisely. For example, they can be purged simultaneously, purged at different times, or only a part of them can be purged, which is conducive to achieving flexible control.

[0036] In one optional embodiment of this application, the drive unit 400 can be a cylinder, the cylinder body of which can be fixed on the platform 500, and the piston rod of which can be connected to the calibration unit 100. To enable the cylinder to be driven by the same air source 311, a third air passage 3127 is added to the valve body 3121 of the sub-control valve 312. One end of the third air passage 3127 is connected to the air inlet 3124, and the other end of the third air passage 3127 can be connected to the cylinder via a pipeline. Correspondingly, the sub-control valve 312 is equipped with a third valve core 3128, part of which is located within the third air passage 3127, used to control the opening or closing of the third air passage 3127.

[0037] When the position of the calibration unit 100 needs to be switched, the third valve core 3128 can be controlled to open the third air passage 3127, and at the same time, the reversing valve of the cylinder (not shown in the figure, which can be integrated into the valve body 3121 or set independently) can be controlled. The gas from the air source 311 enters the corresponding chamber of the cylinder through the air inlet 3124 and the third air passage 3127, pushing the piston to move, thereby driving the calibration unit 100 from the first position to the second position, or vice versa. With the above design, the first purging unit 320, the second purging unit 330 and the drive unit 400 share a single air source 311 and a separate control valve 312, which simplifies the structure, reduces cost and complexity, and improves system integration.

[0038] In one optional embodiment of this application, the first purging unit 320 may include a first purging pipe and an air knife 321. One end of the first purging pipe is connected to the air supply unit 310, specifically to the outlet of the first air passage 3125 of the sub-control valve 312, and the other end of the first purging pipe is connected to the air inlet of the air knife 321.

[0039] The air knife 321 is a device capable of generating a uniform, high-intensity linear airflow. In this embodiment, the first purging port can be located on the side of the air knife 321 (i.e., the narrow air outlet slit on the air knife 321). The air knife 321 is installed and fixed so that the length direction of its air outlet slit (first purging port) is perpendicular to or at a certain angle to the movement direction of the calibration unit 100. In this way, a wide, uniform sheet-like airflow is ejected from the air knife 321, which can cover a relatively wide strip area on the calibration surface of the calibration unit 100 in one go. When the calibration unit 100 moves, this sheet-like airflow can sweep across the entire calibration surface like a "windshield wiper," resulting in high cleaning efficiency and uniform effect.

[0040] In one optional embodiment of this application, the detection unit 200 may include a cover 210 and a light emitting unit 220 and a light receiving unit 230 disposed within the cover 210. One end of the cover 210 (the end near the light-transmitting aperture of the stage 500) is provided with a detection port 201. Taking a spectrometer as an example, the light emitting unit 220 can emit detection light (e.g., infrared light, near-infrared light, etc.) towards the mineral to be tested (or the calibration unit) through the detection port 201, and the light receiving unit 230 (such as a fiber optic probe or photodetector of the spectrometer) can receive the detection return light emitted from the detection port 201, thereby acquiring the spectroscopic data (spectral data) of the mineral to be tested (or the calibration unit). Taking an energy spectrometer as an example, the light emitting unit 220 can emit X-rays to the mineral to be tested (or the calibration unit) through the detection port 201, and the light receiving unit 230 (such as the semiconductor detector of the energy spectrometer) can receive the photon beam that enters from the detection port 201, thereby obtaining the energy spectrum data of the mineral to be tested (or the calibration unit).

[0041] The second purging unit 330 may include a second purging pipeline and multiple connecting parts 331. One end of the second purging pipeline is connected to the air supply unit 310, specifically to the outlet of the second air passage 3126 of the control valve 312. The other end of the second purging pipeline can be connected to multiple connecting parts 331 via a split connector. Each connecting part 331 is provided with a second purging port.

[0042] Multiple connecting members 331 can pass through corresponding mounting holes on the housing 210 and extend into the interior of the housing 210, aligning with the optical components that need to be cleaned. Specifically, the multiple connecting members 331 can purge at least one of the light emitting section 220 and the light receiving section 230. For example, the multiple connecting members 331 can purge only the light emitting section 220 or the light receiving section 230; or, the multiple connecting members 331 can purge both the light emitting section 220 and the light receiving section 230 simultaneously to prevent the components from accumulating dust or fogging due to exposure to potentially contaminated airflow.

[0043] Furthermore, the aforementioned light emitting unit 220 may include a light-transmitting element 221 and a light source 222. The light-transmitting element 221 may be an optical device such as glass, a lens, or a beam splitter. The light-transmitting element 221 is disposed inside the housing 210, and the light-emitting surface of the light-transmitting element 221 faces the detection port 201. The detection light emitted by the light source 222 passes through the light-transmitting element 221 and is emitted from the light-emitting surface of the light-transmitting element 221 towards the detection port 201. The light-transmitting element 221 can divide the interior of the housing 210 into two spaces: a first mounting space 211 and a second mounting space 212. The second mounting space 212 is closer to the detection port 201 and is connected to the external environment through the detection port 201. The light source 222 (such as a halogen lamp, laser lamp, etc.) is disposed in the first mounting space 211 and faces the light-transmitting element 221. The light emitted by the light source 222 passes through the light-transmitting element 221 and is emitted towards the detection port 201. The light receiving unit 230 is disposed in the second mounting space 212 and can be used to receive the detection return light emitted from the detection port 201.

[0044] Multiple connecting members 331 can purge at least one of the light-emitting surface of the light-transmitting member 221 and the receiving surface of the light-receiving part 230 to prevent these critical surfaces from accumulating dust or fogging due to exposure to potentially contaminated airflow.

[0045] Based on the above, the multiple connecting members 331 can be further subdivided. The multiple connecting members 331 may include a first connecting member 3311 and multiple second connecting members 3312. The cover 210 has a first mounting hole and multiple second mounting holes correspondingly provided. The first connecting member 3311 passes through the first mounting hole and extends into the second mounting space 212. The second purge port at the end of the first connecting member 3311 is positioned facing the central area or the entire surface of the light-transmitting element 221, used for concentrated purge of the light-transmitting element 221 to maintain its light transmittance. The multiple second connecting members 3312 each extend into the second mounting space 212 through different second mounting holes. The multiple second connecting members 3312 point at the receiving surface of one or more light receiving parts 230 from different angles, ensuring that the purge airflow can effectively cover the light receiving part 230 and remove contaminants that may affect signal sensitivity.

[0046] To more effectively and uniformly purge the multiple light receivers 230, a junction cavity (not shown in the figure) can be provided within the second mounting space 212 in this embodiment. The junction cavity can be an annular cavity fixed to the inner wall of the cover 210. Multiple second connecting members 3312 are respectively connected to the junction cavity to input gas into the junction cavity.

[0047] Multiple optical receivers 230 (e.g., multiple fiber optic probes arranged in a ring) are circumferentially spaced within the housing 210. Multiple branching air channels 213 are provided inside the manifold or at positions corresponding to each optical receiver 230. The outlet of each branching air channel 213 is aligned with the receiving surface of an optical receiver 230. Gas entering the manifold from the second connecting member 3312, after pressure equilibrium within the cavity, is uniformly and directionally sprayed onto the corresponding optical receiver 230 through each branching air channel 213. This design ensures that each optical receiver 230 is effectively cleaned and that the airflow distribution is uniform, avoiding uneven cleaning caused by excessively strong or weak local airflow.

[0048] Please refer to Figures 1 to 5 This application also discloses an online detection system, which may include a transmission device and the spectroscopic analysis device described above. The spectroscopic analysis device may be a spectrometer, an energy dispersive spectrometer, etc. Taking a spectrometer as an example, the spectrometer can emit infrared light, near-infrared light, etc., to the mineral to be tested and receive the spectral signal from the mineral to be tested; taking an energy dispersive spectrometer as an example, the energy dispersive spectrometer can emit X-rays to the mineral to be tested and receive the energy dispersive spectrum signal from the mineral to be tested. The transmission device can be used to transmit the mineral to be tested to the detection area of ​​the detection unit 200. The transmission device may be a conveyor belt, a roller conveyor, a robot, or a slide rail, etc.

[0049] As described above, the online detection system disclosed in this application improves upon related technologies by adding a cleaning mechanism 300 to the spectroscopic analysis device. The cleaning mechanism 300 includes an air supply unit 310, a first purging unit 320, and a second purging unit 330, which are respectively connected to the air supply unit 310. The calibration unit 100 can be purged using the first purging port of the first purging unit 320, and the detection unit 200 can be purged using the second purging port of the second purging unit 330, thereby achieving efficient cleaning of both the calibration unit 100 and the detection unit 200. Furthermore, the spectroscopic analysis device does not need to be stopped during the cleaning process, thus improving detection efficiency.

[0050] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.

[0051] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A spectroscopic analysis device, characterized in that, It includes a calibration unit (100), a detection unit (200), and a cleaning mechanism (300), wherein the detection unit (200) is used to acquire spectroscopic data of the mineral to be tested; The cleaning mechanism (300) includes an air supply unit (310), a first purging unit (320), and a second purging unit (330), wherein the first purging unit (320) and the second purging unit (330) are respectively connected to the air supply unit (310); The first purging unit (320) has a first purging port, which is disposed opposite to the calibration unit (100) and is used to purge the calibration unit (100); the second purging unit (330) has a second purging port, which is connected to the detection unit (200) and is used to purge the detection unit (200).

2. The spectroscopic analysis apparatus according to claim 1, characterized in that, The spectroscopic analysis device further includes a drive unit (400) connected to the calibration unit (100) for driving the calibration unit (100) to reciprocate relative to the first purge port, so that the first purge port purges different areas on the surface of the calibration unit (100).

3. The spectroscopic analysis apparatus according to claim 2, characterized in that, The spectroscopic analysis device further includes a stage (500) having a first side and a second side facing away from each other, a detection unit (200) located on the first side, a calibration unit (100) located on the second side, and a drive unit (400) connected to the stage (500). The stage (500) is provided with a light-transmitting hole connecting the first side and the second side, and the detection port (201) of the detection unit (200) faces the light-transmitting hole; When the calibration part (100) is in the first position, the calibration part (100) covers the light-transmitting hole; when the calibration part (100) is in the second position, the calibration part (100) avoids the light-transmitting hole so that the detection part (200) acquires the spectroscopic data of the mineral to be tested below the stage (500).

4. The spectroscopic analysis apparatus according to claim 3, characterized in that, The platform (500) is provided with a clearance hole connecting the first side and the second side. The first blowing part (320) is connected to the platform (500), and a part of the structure of the first blowing part (320) passes through the clearance hole. The first blowing port is located close to the second side. When the calibration unit (100) switches between the first position and the second position, the first purging port is used to purge different areas on the surface of the calibration unit (100).

5. The spectroscopic analysis apparatus according to claim 2, characterized in that, The gas supply unit (310) includes a gas source (311) and a sub-control valve (312). The sub-control valve (312) includes a valve body (3121), a first valve core (3122), and a second valve core (3123). The valve body (3121) is provided with an air inlet (3124) and a first air passage (3125) and a second air passage (3126) respectively connected to the air inlet (3124). The air source (311) is connected to the air inlet (3124). The first air passage (3125) is connected to the first purge part (320). A portion of the structure of the first valve core (3122) is located in the first air passage (3125) for controlling the opening or closing of the first air passage (3125). The second air passage (3126) is connected to the second purge part (330). A portion of the structure of the second valve core (3123) is located in the second air passage (3126) for controlling the opening or closing of the second air passage (3126).

6. The spectroscopic analysis apparatus according to claim 5, characterized in that, The drive unit (400) is a cylinder, and the actuating part of the cylinder is connected to the calibration unit (100); The valve body (3121) is also provided with a third air passage (3127), one end of the third air passage (3127) is connected to the air inlet (3124), and the other end of the third air passage (3127) is connected to the cylinder. The air source (311) cooperates with the cylinder to drive the calibration part (100) to reciprocate relative to the first purge port. The sub-control valve (312) also includes a third valve core (3128), which is partially located in the third air passage (3127) and is used to control the opening or closing of the third air passage (3127).

7. The spectroscopic analysis apparatus according to claim 1, characterized in that, The first purging unit (320) includes a first purging pipe and an air knife (321). One end of the first purging pipe is connected to the air supply unit (310), and the other end of the first purging pipe is connected to the air inlet of the air knife (321). The first purging port is located on the side of the air knife (321).

8. The spectroscopic analysis apparatus according to claim 1, characterized in that, The second purging unit (330) includes a second purging pipe and a plurality of connecting parts (331). One end of the second purging pipe is connected to the air supply unit (310), and the plurality of connecting parts (331) are respectively connected to the other end of the second purging pipe. The connecting parts (331) are provided with the second purging port. The detection unit (200) includes a cover (210) and a light emitting unit (220) and a light receiving unit (230) disposed inside the cover (210). One end of the cover (210) is provided with a detection port (201). The light emitting unit (220) is used to emit detection light to the mineral to be tested through the detection port (201). The light receiving unit (230) is used to receive the detection return light emitted from the detection port (201). Multiple connecting members (331) extend into the cover (210) respectively to purge at least one of the light emitting part (220) and the light receiving part (230).

9. The spectroscopic analysis apparatus according to claim 8, characterized in that, The light emitting part (220) includes a light-transmitting element (221) and a light source (222). The light-transmitting element (221) is disposed inside the cover (210), and the light-emitting surface of the light-transmitting element (221) faces the detection port (201). The light-transmitting element (221) divides the cover (210) into a first installation space (211) and a second installation space (212). The second installation space (212) is close to the detection port (201) and is connected to the external environment through the detection port (201). The light source (222) is disposed in the first mounting space (211) so that the detection light emitted by the light source (222) is directed to the mineral to be tested through the light-transmitting element (221) and the detection port (201); the light receiving part (230) is disposed in the second mounting space (212); The plurality of the connecting members (331) are used to purge at least one of the light-emitting surface of the light-transmitting member (221) and the receiving surface of the light-receiving part (230).

10. The spectroscopic analysis apparatus according to claim 9, characterized in that, The plurality of connecting members (331) include a first connecting member (3311) and a plurality of second connecting members (3312). The first connecting member (3311) passes through a first mounting hole on the cover (210) and extends into the second mounting space (212). The first connecting member (3311) is disposed opposite to the light-transmitting member (220) to purge the light-emitting surface of the light-transmitting member (220). The second connecting members (3312) pass through a second mounting hole on the cover (210) and extend into the second mounting space (212) to purge the receiving surface of the light receiving part (230).

11. The spectroscopic analysis apparatus according to claim 10, characterized in that, The second installation space (212) is provided with a manifold cavity, and a plurality of second connecting parts (3312) are respectively connected to the manifold cavity; The number of light receiving units (230) is multiple, and the multiple light receiving units (230) are arranged circumferentially at intervals in the cover (210). The confluence cavity is provided with multiple diversion air channels (213), and the diversion air channels (213) are arranged opposite to the light receiving units (230) so that the gas in the confluence cavity is blown to the receiving surface of the light receiving unit (230) through the diversion air channels (213).

12. An online detection system, characterized in that, It includes a transmission device and a spectroscopic analysis device as described in any one of claims 1-11, wherein the transmission device is used to transmit the mineral to be tested to the detection area of ​​the detection unit (200).

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