Calibration device and method for coal quality rapid detection equipment
By combining a sealed box structure with a vacuum system, the problems of long testing time and low accuracy in traditional coal testing are solved, enabling rapid and accurate coal quality testing, supporting the reuse of coal samples, and reducing testing costs.
Patent Information
- Application Number
- CN202511288044.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2025-10-31
AI Technical Summary
Traditional coal quality testing is time-consuming, the results are easily affected by oxidation and contamination, the signal strength and resolution are low, it cannot be reused, and the testing accuracy is insufficient.
It adopts a sealed box structure combined with a vacuum system, and realizes automatic opening of the cover through an electric push rod. It uses high-transmittance materials and vibration compaction modules to ensure that the coal sample is isolated from the air and can be detected quickly.
It significantly improves the accuracy and reusability of test results, reduces the risk of human contamination, enhances testing efficiency and precision, and reduces costs.
Smart Images
Figure CN120869984A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of testing technology, and in particular to a calibration device and method for rapid coal quality testing equipment. Background Technology
[0002] In the coal-related industries, coal quality testing is crucial. Traditional coal quality testing relies on manual methods, taking 8-24 hours from sampling and sample preparation (which requires crushing to below 0.2mm) to laboratory analysis. During this process, the coal sample is exposed to air for an extended period, leading to oxidation and distortion of indicators such as calorific value and volatile matter. Moisture also evaporates easily, severely affecting the test results. Furthermore, standard coal samples placed on the testing conveyor belt are prone to cross-contamination with previous samples and can only be used once, not reused. Additionally, the absorption and scattering of light by ordinary plastic materials reduces signal strength and resolution, affecting testing accuracy. To improve testing efficiency and avoid these problems, rapid coal quality testing is necessary.
[0003] Therefore, how to provide a calibration device for rapid coal quality testing equipment to improve the accuracy of test results has become an urgent technical problem to be solved. Summary of the Invention
[0004] This application provides a calibration device and method for rapid coal quality testing equipment to improve the accuracy of test results.
[0005] This application provides a calibration device for rapid coal quality testing equipment, characterized in that it includes:
[0006] A sealed box structure, wherein the sealed box structure consists of a box body and a box cover forming an airtight cavity, used to isolate the coal sample from contact with air;
[0007] An automated lid opening module includes an electric push rod, which is used to slide the lid away from the testing area during coal quality testing, and the electric push rod is also used to reset the lid after testing is completed;
[0008] The vacuum system, including a vacuum pump and a pressure sensor, is used to evacuate the sealed box structure after coal quality testing is completed.
[0009] The beneficial effects of this application are as follows: Through the dual protection of a sealed box structure and a vacuum system, the coal sample is effectively isolated from air, preventing distortion of indicators such as calorific value and volatile matter due to oxidation, while also preventing moisture evaporation. Compared with existing technologies that expose coal samples to air for 8-24 hours using direct detection methods, this solution significantly improves the accuracy of the test results. Secondly, the electric push rod-driven opening module enables automatic avoidance of the detection area, coupled with a rapid response vacuum pump, reducing manual intervention and lowering the risk of human contamination of the coal sample, further enhancing the accuracy of the test results.
[0010] In one embodiment, the housing structure material is a material whose transmittance to X-ray fluorescence spectrometer and near-infrared spectrometer is greater than a preset threshold.
[0011] The beneficial effects of this embodiment are: by using a high-transmittance material, the problem of ordinary plastics absorbing / scattering X-rays and near-infrared light is solved, ensuring that the intensity and resolution of the spectral signal are not disturbed.
[0012] In one embodiment, the material is preferably HDPE, PI, or PET, which balances optical performance and mechanical strength.
[0013] In one embodiment, when a coal sample is present in the sealed box structure, the coal sample is compacted to a preset density by vibration within the cavity.
[0014] The beneficial effects of this embodiment are: by using standardized filling that is vibrated and compacted to a preset density, cross-contamination in traditional belt conveyor testing is eliminated, and the coal sample can be reused, thus reducing testing costs.
[0015] In one embodiment, the frequency of the vibration compaction module is adjustable (10-100Hz) to adapt to the compaction requirements of coal samples with different particle sizes.
[0016] In one embodiment, the sealing structure between the box body and the lid adopts a double-layer sealing ring design.
[0017] In one embodiment, the inner wall of the box is coated with an antistatic coating to reduce coal sample adhesion.
[0018] In one embodiment, the electric push rod has a built-in displacement sensor that provides real-time feedback on the opening and closing position of the lid.
[0019] In one embodiment, when the pressure sensor detects that the pressure is greater than the preset pressure, the vacuum pump is started to perform a vacuum replenishment operation.
[0020] In one embodiment, the calibration device is controlled by a control module integrated into the main unit of the coal quality rapid testing equipment, which triggers the opening of the cover and vacuuming operations via wireless signals.
[0021] This application also provides a calibration method for a rapid coal quality testing device, used in any of the calibration apparatuses described in the above embodiments, comprising:
[0022] When it is detected that the sealed box structure is filled with coal sample, the coal sample is compacted to a preset density;
[0023] When a coal quality testing command is received, the lid is opened via an electric push rod sealing the box structure.
[0024] After the sealed box structure is opened, a notification message for spectral acquisition is sent to the coal quality rapid testing equipment.
[0025] When a notification message indicating that spectral acquisition is complete is received from the rapid coal quality testing equipment, the coal quality testing is confirmed to be complete, and the sealed box structure is evacuated using the vacuum system.
[0026] In one embodiment, the vacuuming process performed on the sealed box structure using a vacuum system includes:
[0027] The vacuum pump of the control vacuum system is started, and the air pressure in the sealed box structure is detected by the air pressure sensor of the vacuum system.
[0028] When the air pressure in the sealed box structure is lower than the preset air pressure, the vacuum pump is shut down.
[0029] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.
[0030] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0031] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the embodiments of the present application to explain the application and do not constitute a limitation thereof. In the drawings:
[0032] Figure 1 This application provides a calibration device for a rapid coal quality testing equipment in one embodiment.
[0033] Figure 2 This is a flowchart of a calibration method for a rapid coal quality testing equipment according to an embodiment of this application;
[0034] Figure 3 This is a schematic diagram of the hardware structure of a coal quality rapid testing device host according to one embodiment of this application. Detailed Implementation
[0035] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.
[0036] Figure 1 As one embodiment of this application, a calibration device for a rapid coal quality testing equipment is provided, such as... Figure 1 As shown, the device includes:
[0037] The sealed box structure 101 consists of a box body and a box cover forming an airtight cavity. The box cover and the box body fit tightly together, and good airtightness is achieved through a sealing ring, which is used to isolate the coal sample from contact with air.
[0038] The automated lid opening module 102 includes an electric push rod. The electric push rod is used to slide the lid away from the detection area when receiving a detection command to perform coal quality detection, control the lid to open, and prevent the material of the lid from affecting the spectrum. The electric push rod is also used to reset the lid after the detection is completed. The electric push rod has a built-in displacement sensor to provide real-time feedback on the opening and closing position of the lid.
[0039] The vacuum system 103 includes a vacuum pump and a pressure sensor, which is used to evacuate the sealed box structure after the coal quality test is completed. When the pressure sensor detects that the pressure is greater than the preset pressure, it controls the vacuum pump to start to perform a supplementary vacuum operation. The vacuum is evacuated to below the preset pressure threshold, for example, the pressure inside the box is ≤10Pa, in order to further prevent the coal sample from oxidizing.
[0040] In one embodiment, the sealed box structure has an inner cavity serving as a coal sample loading area for filling coal samples of different particle sizes. After the coal samples are loaded, the inner cavity is compacted by vibration to achieve a preset density, for example, 1.3 g / cm³. 3 This ensures that the surface of the coal sample is flat after loading, thereby improving the accuracy of the test results. In one embodiment, the inner wall of the container is coated with an antistatic coating to reduce coal sample adhesion. It is understood that when the sealed container structure has an inner cavity, the inner wall of the cavity is coated with an antistatic coating to reduce coal sample adhesion.
[0041] Furthermore, to eliminate signal interference, the sealing box structure in this application is made of a material that does not affect the signal acquisition by the X-ray fluorescence spectrometer (XRF) and near-infrared spectrometer (NIR), thereby improving the accuracy of coal quality detection. By using materials with high transmittance and low absorption and scattering characteristics for X-rays and near-infrared light, such as high-density polyethylene (HDPE), polyimide (PI), and polyethylene terephthalate (PET), the excellent optical performance in the XRF and NIR detection bands ensures the integrity and accuracy of the detection signal. In one embodiment, the box structure material can be selected as a material with transmittance greater than a preset threshold for X-ray fluorescence spectrometers and near-infrared spectrometers; for example, the encapsulation material ensures XRF (1-50keV) transmittance ≥90% and NIR (800-2500nm) transmittance ≥90%.
[0042] The device provided in this application can prevent coal sample oxidation. Its sealed structure and encapsulation design effectively isolate the coal sample from air, ensuring the stability of its chemical properties. It is particularly suitable for detecting oxidation-sensitive coal quality indicators, extending the sample's shelf life and ensuring that test results are not affected by oxidation. Because the calibration device has standardized specifications, it facilitates standardized operations for loading and utilizing standard coal samples of different particle sizes, improving the efficiency and quality control of rapid coal quality testing and reducing human error. Furthermore, the special optical quartz glass material is robust and durable, allowing for multiple reuses and reducing the cost of rapid coal quality testing.
[0043] The beneficial effects of this application are as follows: Through the dual protection of a sealed box structure and a vacuum system, the coal sample is effectively isolated from air, preventing distortion of indicators such as calorific value and volatile matter due to oxidation, while also preventing moisture evaporation. Compared with existing technologies that expose coal samples to air for 8-24 hours using direct detection methods, this solution significantly improves the accuracy of the test results. Secondly, the electric push rod-driven opening module enables automatic avoidance of the detection area, coupled with a rapid response vacuum pump, reducing manual intervention and lowering the risk of human contamination of the coal sample, further enhancing the accuracy of the test results.
[0044] In one embodiment, the housing structure material is a material whose transmittance to X-ray fluorescence spectrometer and near-infrared spectrometer is greater than a preset threshold.
[0045] The beneficial effects of this embodiment are: by using a high-transmittance material, the problem of ordinary plastics absorbing / scattering X-rays and near-infrared light is solved, ensuring that the intensity and resolution of the spectral signal are not disturbed.
[0046] In one embodiment, the material is preferably HDPE, PI, or PET, which balances optical performance and mechanical strength.
[0047] In one embodiment, when a coal sample is present in the sealed box structure, the coal sample is compacted to a preset density by vibration within the cavity.
[0048] The beneficial effects of this embodiment are: by using standardized filling that is vibrated and compacted to a preset density, cross-contamination in traditional belt conveyor testing is eliminated, and the coal sample can be reused, thus reducing testing costs.
[0049] In one embodiment, the frequency of the vibration compaction module is adjustable (10-100Hz) to adapt to the compaction requirements of coal samples with different particle sizes.
[0050] In one embodiment, the sealing structure between the box body and the lid adopts a double-layer sealing ring design.
[0051] In one embodiment, the inner wall of the box is coated with an antistatic coating to reduce coal sample adhesion.
[0052] In one embodiment, the electric push rod has a built-in displacement sensor that provides real-time feedback on the opening and closing position of the lid.
[0053] In one embodiment, when the pressure sensor detects that the pressure is greater than the preset pressure, the vacuum pump is started to perform a vacuum replenishment operation.
[0054] In one embodiment, the calibration device is controlled by a control module integrated into the main unit of the coal quality rapid testing equipment, which triggers the opening of the cover and vacuuming operations via wireless signals.
[0055] Figure 2 This is a flowchart of a calibration method for a rapid coal quality testing device according to one embodiment of this application. The method is used with the calibration device described in any of the above embodiments to improve the accuracy and efficiency of coal quality testing. The method can be implemented as follows: steps A1-A4:
[0056] In step A1, when it is detected that the sealed box structure is filled with coal sample, the coal sample is compacted to a preset density;
[0057] In step A2, when a coal quality testing command is received, the cover of the sealed box is opened by an electric push rod.
[0058] In step A3, after the sealed box structure is opened, a notification message for spectral acquisition is sent to the coal quality rapid testing equipment.
[0059] In step A4, when a notification message indicating that spectral acquisition is complete is received from the coal quality rapid testing equipment, the coal quality testing is confirmed to be complete, and the sealed box structure is vacuumed using the vacuum system.
[0060] In this application, when a coal sample is detected inside the sealed container structure, the coal sample is compacted to a preset density. The system first detects whether a coal sample has been filled inside the sealed container structure, for example, by using a pressure sensor to determine if the weight of the coal sample loading area exceeds a preset value, receiving an instruction to compact the coal sample, or confirming that the coal sample loading is complete through an image captured by a camera. Once the presence of the coal sample is confirmed, the system automatically activates the internal vibration compaction mechanism. By precisely controlling the vibration frequency (adjustable to 10-100Hz to accommodate coal samples of different particle sizes), the system compacts the coal sample to a preset density, such as 1.3 g / cm³. 3 This ensures that the coal sample surface is flat, thereby eliminating the cross-contamination problem that may occur in traditional belt conveyor testing, while also supporting the reuse of coal samples and effectively reducing testing costs.
[0061] When a coal quality testing command is received, the lid of the sealed box is opened via an electric push rod. Upon receiving the user's coal quality testing command, the automated lid opening module responds immediately, driving the electric push rod to slide the lid away from the testing area, achieving automatic avoidance of the testing zone. During this process, the electric push rod receives real-time feedback on the lid's opening and closing position via a built-in displacement sensor, ensuring precise operation.
[0062] After the sealed container structure is opened, a notification message for spectral acquisition is sent to the coal quality rapid testing equipment. Once the sealed container structure is opened, the system immediately sends a notification message for spectral acquisition to the coal quality rapid testing equipment. At this time, the coal quality rapid testing equipment will use X-ray fluorescence spectrometry (XRF) and near-infrared spectroscopy (NIR) to perform non-destructive spectral analysis on the coal sample. Because the sealed container structure in this application is made of materials with extremely high XRF and NIR transmittance (such as HDPE, PI, or PET), the integrity and accuracy of the spectral signal are ensured, avoiding signal absorption and scattering problems that may be caused by ordinary plastic materials.
[0063] Upon receiving a notification message from the rapid coal quality testing equipment indicating completion of spectral acquisition, the system confirms the completion of coal quality testing and initiates a vacuum process to evacuate the sealed container structure. Specifically, the system activates the vacuum system to further prevent coal sample oxidation and ensure the long-term stability of the test results. The system starts the vacuum pump and continuously monitors pressure changes within the sealed container structure using a pressure sensor. When the pressure drops below a preset threshold (e.g., ≤10 Pa), the system automatically shuts off the vacuum pump, completing the entire vacuuming process.
[0064] In one embodiment, the vacuuming process of the sealed box structure using a vacuum system described in step A4 above can be implemented as follows: steps A41-A42:
[0065] In step A41, the vacuum pump of the vacuum system is started, and the air pressure in the sealed box structure is detected by the air pressure sensor of the vacuum system.
[0066] In step A42, when the air pressure in the sealed box structure is less than the preset air pressure, the vacuum pump is shut down.
[0067] Figure 3 This is a schematic diagram of the hardware structure of a coal quality rapid testing device host according to an embodiment of this application, as shown below. Figure 3 As shown, the main unit of this rapid coal quality testing equipment includes:
[0068] At least one processor 320; and,
[0069] Memory 304 communicatively connected to the at least one processor 320; wherein,
[0070] The memory 304 stores instructions that can be executed by the at least one processor 320 to implement the calibration method for a rapid coal quality testing device as described in any of the above embodiments.
[0071] Reference Figure 3 The main unit 300 of the coal quality rapid testing equipment may include one or more of the following components: processing component 302, memory 304, power supply component 306, multimedia component 308, audio component 310, input / output (I / O) interface 312, sensor component 314, and communication component 316.
[0072] The processing component 302 typically controls the overall operation of the main unit 300 of the coal quality rapid testing equipment. The processing component 302 may include one or more processors 320 to execute instructions to complete all or part of the steps of the above-described method. Furthermore, the processing component 302 may include one or more modules to facilitate interaction between the processing component 302 and other components. For example, the processing component 302 may include a multimedia module to facilitate interaction between the multimedia component 308 and the processing component 302.
[0073] Memory 304 is configured to store various types of data to support the operation of the coal quality rapid testing equipment host 300. Examples of this data include instructions for any application or method operating on the coal quality rapid testing equipment host 300, such as text, images, videos, etc. Memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.
[0074] The power supply component 306 provides power to the various components of the main unit 300 of the coal quality rapid testing equipment. The power supply component 306 may include a power management device, one or more power supplies, and other components associated with the generation, management, and distribution of power by the control device 300.
[0075] The multimedia component 308 includes a screen that provides an output interface between the coal quality rapid testing equipment host 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may not only sense the boundaries of touch or swipe actions but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 308 may also include a front-facing camera and / or a rear-facing camera. When the coal quality rapid testing equipment host 300 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens device or have focal length and optical zoom capabilities.
[0076] Audio component 310 is configured to output and / or input audio signals. For example, audio component 310 includes a microphone (MIC) configured to receive external audio signals when the coal quality rapid testing equipment host 300 is in an operating mode, such as alarm mode, recording mode, voice recognition mode, and voice output mode. The received audio signals may be further stored in memory 304 or transmitted via communication component 316. In some embodiments, audio component 310 also includes a speaker for outputting audio signals.
[0077] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.
[0078] Sensor assembly 314 includes one or more sensors for providing status assessments of various aspects of the coal quality rapid testing equipment host 300. For example, sensor assembly 314 may include a sound sensor. Additionally, sensor assembly 314 can detect the on / off state of the coal quality rapid testing equipment host 300, the relative positioning of components (e.g., the display and keypad of the coal quality rapid testing equipment host 300), and the operating status of the coal quality rapid testing equipment host 300 or one of its components. Sensor assembly 314 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 314 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, material buildup thickness sensor, or temperature sensor.
[0079] Communication component 316 is configured to enable the coal quality rapid testing equipment host 300 to provide wired or wireless communication capabilities with other devices and cloud platforms. The coal quality rapid testing equipment host 300 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management device via a broadcast channel. In one exemplary embodiment, communication component 316 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
[0080] In an exemplary embodiment, the coal quality rapid testing equipment host 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the calibration method for the coal quality rapid testing equipment described in any of the above embodiments.
[0081] In one embodiment, the main unit of the coal quality rapid testing equipment further includes a control module, which is used to trigger the calibration device of the coal quality rapid testing equipment to perform opening and vacuuming operations via wireless signal according to the control command received by the main unit.
[0082] This application also provides a computer-readable storage medium, which, when the instructions in the storage medium are executed by a processor corresponding to a calibration device for a coal quality rapid testing device, enables the calibration device for the coal quality rapid testing device to implement the calibration method for the coal quality rapid testing device described in any of the above embodiments.
[0083] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.
[0084] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0085] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0086] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0087] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A calibration device for rapid coal quality testing equipment, characterized in that, include: A sealed box structure, wherein the sealed box structure consists of a box body and a box cover forming an airtight cavity, used to isolate the coal sample from contact with air; An automated lid opening module includes an electric push rod, which is used to slide the lid away from the testing area during coal quality testing, and the electric push rod is also used to reset the lid after testing is completed; The vacuum system, including a vacuum pump and a pressure sensor, is used to evacuate the sealed box structure after coal quality testing is completed.
2. The calibration device according to claim 1, characterized in that, The box structure material is a material whose transmittance to X-ray fluorescence spectrometer and near-infrared spectrometer is greater than a preset threshold.
3. The calibration device according to claim 1, characterized in that, When a coal sample is present in the sealed box structure, the coal sample is compacted to a preset density by vibration within the cavity.
4. The calibration device according to claim 1, characterized in that, The sealing structure between the box body and the lid adopts a double-layer sealing ring design.
5. The calibration device according to claim 1, characterized in that, The inner wall of the box is coated with an antistatic coating to reduce coal sample adhesion.
6. The calibration device according to claim 1, characterized in that, The electric push rod has a built-in displacement sensor that provides real-time feedback on the opening and closing position of the lid.
7. The calibration device according to claim 1, characterized in that, When the pressure sensor detects that the pressure is greater than the preset pressure, it controls the vacuum pump to start in order to perform a vacuum replenishment operation.
8. The calibration device according to claim 1, characterized in that, The calibration device is controlled by a control module, which is integrated into the main unit of the coal quality rapid testing equipment. The control module triggers the opening of the cover and the vacuuming operation via wireless signal.
9. A calibration method for a rapid coal quality testing equipment, used in the calibration device as described in any one of claims 1-8, characterized in that, include: When it is detected that the sealed box structure is filled with coal sample, the coal sample is compacted to a preset density; When a coal quality testing command is received, the lid is opened via an electric push rod sealing the box structure. After the sealed box structure is opened, a notification message for spectral acquisition is sent to the coal quality rapid testing equipment. When a notification message indicating that spectral acquisition is complete is received from the rapid coal quality testing equipment, the coal quality testing is confirmed to be complete, and the sealed box structure is evacuated using the vacuum system.
10. The method as described in claim 9, characterized in that, The process of vacuuming the sealed box structure using a vacuum system includes: The vacuum pump of the control vacuum system is started, and the air pressure in the sealed box structure is detected by the air pressure sensor of the vacuum system. When the air pressure in the sealed box structure is lower than the preset air pressure, the vacuum pump is shut down.