Coal moisture detection device and data analysis method

Abstract

The invention relates to the technical field of coal detection, in particular to a coal moisture detection device and a data analysis method. The device comprises the heating device, the dehumidifier, the stirring device, the scraping device and the rotating device, coal particles generated in the stirring process are collected while the coal drying efficiency is improved through stirring, and therefore the coal moisture is rapidly and accurately measured. In addition, the invention further provides a data analysis method, a sensor module, a data transmission module, a data storage module, an algorithm analysis module and a report generation module are included, machine learning is applied to conduct real-time analysis on collected data, efficient analysis and prediction on complex data are achieved, and the accuracy of data analysis is improved. And the coal moisture detection efficiency and accuracy can be further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal detection, and in particular relates to a coal moisture detection device and a data analysis method. Background Art

[0002] Coal plays an important role in modern industry, whether it is heavy industry or light industry, whether it is energy industry, metallurgical industry, chemical industry, machinery industry, or light textile industry, food industry, and transportation industry. Coal moisture detection is an important coal quality analysis method, which aims to determine the moisture content in coal. Moisture is a major non-combustible component in coal, and its content has an important influence on the combustion performance and calorific value of coal. The coal moisture detection device is a device used to measure the moisture content in coal, which is used to evaluate the quality of coal and help optimize the coal processing and use process. The coal moisture detection device mainly uses thermogravimetric analysis, that is, taking a certain amount of coal sample for testing, and then heating the coal sample to a certain temperature to evaporate the moisture in it, recording the difference in sample quality before and after heating, and calculating the mass loss of the sample, which is mainly the evaporation of water, so as to obtain the moisture content of the coal.

[0003] For example, the Chinese utility model patent with application number 2023221255772 discloses a device for detecting the moisture content of coal. By setting a lifting screw and a shear stirring member, the device converts the periodic change of the motor driving speed into the change of the centrifugal force acting on the limit plate and the insertion rod, and drives the first shear rod and the second shear rod to perform shearing action through the first linkage rod and the second linkage rod. The change of the stirring shape greatly improves the stirring effect and efficiency.

[0004] However, when the existing detection device is drying coal, the accumulated coal will affect the efficiency of coal drying, which will prolong the detection time. However, if the accumulated coal is stirred, the evaporation of water vapor in the coal will easily cause the particles in the coal to float away, which will make the measurement result inaccurate.

[0005] In summary, there is a need for a detection device that can quickly and accurately measure the moisture content of coal. Summary of the invention

[0006] The purpose of the present invention is to provide a coal moisture detection device and a data analysis method. The device uses a stirring device and a scraping device to improve the efficiency of coal drying while collecting coal particles generated during the stirring process, thereby achieving rapid and accurate measurement of coal moisture. In addition, the present invention also proposes a data analysis method that is compatible with the coal moisture detection device to improve the data processing efficiency and data processing capability of the device.

[0007] The technical solution adopted by the present invention to solve the above problem is: a coal moisture detection device, comprising: A drying box, in which a test dish for holding coal is provided; A heating device, which is installed on the inner wall of the drying box and is used to heat the test dish; A dehumidifier, which is fixedly connected to the top of the drying box and is used to remove water vapor generated after the coal is heated; One side of the dehumidifier is connected to a telescopic tube through a connecting pipe, a conical cylinder for collecting water vapor is fixedly connected to the bottom of the telescopic tube, and a filter screen is provided at the connection between the conical cylinder and the telescopic tube; A stirring device, arranged in the telescopic tube and used for stirring the coal in the detection dish; A scraping device, arranged on the stirring device and used to scrape coal particles remaining on the inner wall of the conical cylinder; The rotating device is fixedly connected to the top of the drying box and is used to drive the stirring device and the scraping device to rotate.

[0008] A further preferred technical solution is that the stirring device comprises a telescopic rod penetrating through the connecting pipe, and a plurality of stirring rods arranged at the bottom end of the telescopic rod.

[0009] A further preferred technical solution is that the scraping device comprises an L-shaped scraper fixedly connected to the telescopic rod, and the L-shaped scraper abuts against the inner wall of the conical cylinder.

[0010] A further preferred technical solution is that: the rotating device includes a motor, the motor is fixedly connected to the top of the drying box, and the output end of the motor is fixedly connected to the telescopic rod.

[0011] A further preferred technical solution is that: an installation groove is provided on the front side of the drying box, and a sliding door is slidably connected in the installation groove; it also includes a connecting rod, one end of the connecting rod passes through the telescopic tube and is rotatably connected to the telescopic rod, and the connecting rod is also slidably connected in a slide groove provided on the inner side of the drying box, a traction rope is fixedly connected to the bottom of the connecting rod, one end of the traction rope is fixedly connected to a block, and the block is slidably connected in a through groove provided on the inner side of the drying box, and the through groove is communicated with the installation groove; a pulley is fixedly connected to the inner wall of the drying box, and the traction rope is in contact with the pulley.

[0012] A further preferred technical solution is that the heating device comprises an isolation plate installed on the inner wall of the drying box, a heating tube is installed on the isolation plate, and air outlet holes are opened on the surface of the isolation plate.

[0013] A further preferred technical solution is that the telescopic rod comprises a sleeve and a sleeve rod, a convex block is arranged on the side of the sleeve rod, and a square groove for slidingly installing the convex block is opened on the inner wall of the sleeve.

[0014] A further preferred technical solution is that it also includes a placement rack for mounting the detection dish, and the placement rack is fixedly connected to the bottom of the inner wall of the drying box through supporting legs.

[0015] A further preferred technical solution is that: a plurality of stirring rods are fixedly connected to the bottom of the stirring rod at intervals.

[0016] A data analysis method, using any of the above-mentioned coal moisture detection devices, comprising: A sensor module for collecting and monitoring the moisture content of coal samples; A data transmission module, used to transmit the data collected by the sensor module to the central processing unit; A data storage module, used to store the data collected by the sensor module in a database; Algorithm analysis module, used to analyze collected data in real time by applying machine learning; The report generation module is used to generate a test report based on the data analyzed by the algorithm analysis module.

[0017] Among them, the sensor module is used to collect moisture content data of coal samples, including temperature, humidity and other parameters. Integrated devices such as humidity sensors, temperature sensors, and infrared sensors can be used to monitor sample data in real time.

[0018] The data transmission module transmits the data collected by the sensor to the central processing unit in a timely manner for processing. Wireless transmission technology (such as Wi-Fi, Bluetooth) or wired connection (such as Ethernet, USB) can be used to transmit data to the central processing unit.

[0019] The data storage module stores the data collected by the sensor in a database for subsequent analysis and historical record query. You can use a relational database (such as MySQL, PostgreSQL) or a non-relational database (such as MongoDB) to store data.

[0020] The algorithm analysis module applies machine learning algorithms to perform real-time analysis on the collected data to identify changing trends and abnormal conditions in moisture content. It can use machine learning libraries (such as TensorFlow and PyTorch) to train models and process and analyze data in real time.

[0021] The report generation module generates a detailed test report based on the results of the algorithm analysis module, recording the analysis process and conclusions. It can use data processing and report generation tools (such as Pandas and Matplotlib) to generate and format the report, and supports PDF or HTML format output.

[0022] In summary, the present invention has the following benefits: 1. The present invention uses a telescopic rod and a stirring rod, so that the telescopic rod drives the stirring rod to rotate, and the coal can be stirred and flattened, which solves the problem that the device does not have a stirring function and improves the drying efficiency of the coal.

[0023] 2. The present invention uses a telescopic rod, a conical tube and an L-shaped scraper, so that the hot gas evaporated from the coal can be blocked by the conical tube. The telescopic rod drives the L-shaped scraper to scrape the surface of the conical tube, which can prevent the coal particles from evaporating and floating away. This solves the problem that the hot gas evaporated from the water in the coal can easily drive the particles in the coal to float away, and improves the accuracy of the detection results.

[0024] 3. The present invention applies machine learning to perform real-time analysis on the collected data, realizes efficient analysis and prediction of complex data, and can further improve the efficiency and accuracy of coal moisture detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the connecting rod, traction rope and block structure of the present invention; Figure 4 It is a schematic diagram of the structure of the telescopic rod, the conical tube and the L-shaped scraper of the present invention; Figure 5 It is a schematic diagram of the sleeve and sleeve rod structure of the present invention.

[0026] In the accompanying drawings, the components represented by each reference numeral are as follows: 1. Drying box; 2. Dehumidifier; 3. Motor; 4. Handle; 5. Sliding door; 6. Buckle; 7. Holder; 8. Placement rack; 9. Detection dish; 10. Conical cylinder; 11. Isolation plate; 12. Heating tube; 13. Telescopic tube; 14. Connecting rod; 15. Stirring rod; 16. Traction rope; 17. Block; 18. Telescopic rod; 181. Sleeve; 182. Sleeve rod; 19. L-shaped scraper. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0029] Embodiment 1: Please combine Figure 1-5 , a coal moisture detection device of the present embodiment comprises a drying box 1 for drying coal, the top of the drying box 1 is rotatably connected with a handle 4, the bottom of the drying box 1 is fixedly connected with suction cups on all sides, the front side of the drying box 1 is provided with an installation groove for sliding a sliding door 5, the sliding door 5 is slidably connected in the installation groove, the surface of the sliding door 5 is rotatably connected with a buckle 6, the surface of the drying box 1 is fixedly connected with a holder 7, the inner side of the drying box 1 is fixedly connected with a placement rack 8 for placing a detection dish 9, the placement rack 8 is fixedly connected to the bottom of the inner wall of the drying box 1 by supporting legs on all sides, and the bottom of the placement rack 8 is provided with a perforation, the inner side of the placement rack 8 is provided with a groove, the detection dish 9 is placed in the groove, the inner diameter of the detection dish 9 is slightly larger than the diameter of the stirring rod 15, the inner wall of the drying box 1 is installed with an isolation plate 11, a heating pipe 12 for heating the air in the drying box 1 is installed on one side of the surface of the isolation plate 11, and an air outlet for outputting hot air is provided on the surface of the isolation plate 11.

[0030] The dehumidifier 2 for dehumidifying in the drying box 1 is fixedly connected to the top of the drying box 1. One side of the dehumidifier 2 is connected to a telescopic tube 13 through a connecting pipe. The bottom of the telescopic tube 13 is fixedly connected to a conical cylinder 10. A filter is provided at the connection between the conical cylinder 10 and the telescopic tube 13.

[0031] The motor 3 drives the telescopic rod to rotate. The motor 3 is fixedly connected to the top of the drying box 1 through a U-shaped frame. The output end of the motor 3 is fixedly connected to the telescopic rod 18. The telescopic rod 18 is rotatably connected to the filter screen through a bearing. The surface of the telescopic rod 18 is fixedly connected to an L-shaped scraper 19, and the L-shaped scraper 19 abuts against the inner wall of the conical cylinder 10. The telescopic rod 18 is composed of a sleeve 181 and a sleeve rod 182. Both sides of the surface of the sleeve rod 182 are provided with protrusions. The inner wall of the sleeve 181 is provided with a square groove adapted to the protrusion. The connecting rod 14 is rotatably connected to the sleeve rod 182. The telescopic rod 18 is penetrated and arranged on the connecting pipe, and one end of the telescopic rod 18 is fixedly connected to a stirring rod 15 for stirring the coal. The stirring rod 15 is arranged obliquely, and stirring rods are fixedly connected to the bottom of the stirring rod 15 at equal intervals.

[0032] The connecting rod 14 drives the telescopic rod 18 and the telescopic tube 13 to move, one end of the connecting rod 14 penetrates the telescopic tube 13 and is rotatably connected to the telescopic rod 18, the other end of the connecting rod 14 is slidably connected to the slide groove provided inside the drying box 1, the bottom of the connecting rod 14 is fixedly connected with a traction rope 16, the inner wall of the drying box 1 is fixedly connected with a pulley, the traction rope 16 contacts the pulley, one end of the traction rope 16 is fixedly connected with a stopper 17, the stopper 17 is located on one side of the sliding door 5, the stopper 17 is slidably connected to the through groove provided inside the drying box 1, and the through groove is connected to the installation groove. The connecting rod 14 is also provided with a spring for upward traction, one end of the spring is connected to the connecting rod 14, and the other end of the spring is connected to the inner wall of the drying box 1.

[0033] The implementation principle of a coal moisture detection device in the embodiment of the present application is as follows: put the coal into the detection dish 9 for weighing and then put it into the groove on the placement rack 8, close the sliding door 5, and when the sliding door 5 abuts against the stopper 17, the sliding door 5 continues to move to drive the stopper 17 to move, and the movement of the stopper 17 drives the traction rope 16 to move, thereby moving the connecting rod 14, and the movement of the connecting rod 14 drives the telescopic tube 13 and the telescopic rod 18 to move. When the sliding door 5 is completely closed, the telescopic rod 18 drives the stirring rod 15 to abut against the detection dish 9. After the buckle 6 is rotated to abut against the card seat, the sliding door 5 will be fixed, and the air in the drying box 1 is heated and dehumidified by starting the dehumidifier 2 and the heating tube 12. The telescopic rod 18 is driven to rotate by the starting motor 3. The stirring rod 15 is driven to rotate by the rotation of the telescopic rod 18 to stir the coal and accelerate the evaporation of water. The steam and coal powder evaporated from the coal are absorbed by the dehumidifier 2. Due to the use of the filter, the coal powder will not be absorbed inside. The telescopic rod 18 is driven to rotate and drive the L-shaped scraper 19 to scrape the conical cylinder 10 and the filter, and the coal powder on the surface of the conical cylinder 10 and the filter is scraped off, so that it falls into the detection dish 9, and the filter can be prevented from being blocked. When the drying is completed, the sliding door 5 is opened. Since the block 17 loses its restriction, the spring lifts the connecting rod, so that the stirring rod 15 is separated from the detection dish 9, and the detection dish 9 can be taken out.

[0034] Embodiment 2: A data analysis method, using the coal moisture detection device described in Example 1, comprising: The sensor module is used to collect and monitor the moisture content of the coal sample; the sensor module includes a humidity sensor (DHT22), a temperature sensor (DS18B20), and an infrared sensor (MLX90640) arranged in the drying box 1.

[0035] The data transmission module is used to transmit the data collected by the sensor module to the central processing unit; the model of the central processing unit is Raspberry Pi 4.

[0036] The data storage module is used to store the data collected by the sensor module in the database; the data storage module uses an external hard disk or SSD.

[0037] The algorithm analysis module is used to perform real-time analysis on the collected data by applying machine learning; the algorithm analysis module uses tensorflow to analyze the data collected by the sensor module.

[0038] The report generation module is used to generate a test report for the data analyzed by the algorithm analysis module. The report generation module uses Matplotlib to generate the analysis report.

[0039] A complete coal moisture detection data analysis process includes the following steps: 1. Data preparation The data collected by the sensor module includes temperature, humidity and infrared spectrum data. The data format can be CSV file or real-time streaming data.

[0040] 2. Data Preprocessing Loading and cleaning data using Pandas: # Load data and import the Pandas library, which is a data processing tool import pandas as pd # Read data from a CSV file.

[0041] data = pd.read_csv('sensor_data.csv') # Remove missing values, data cleaning, and delete rows with missing values ​​in the data for subsequent processing.

[0042] data.dropna(inplace=True) 3. Feature Engineering Select and normalize features: # Import tools for data normalization from sklearn.preprocessing import StandardScaler # Select temperature, humidity and infrared spectrum as features features = data[['temperature', 'humidity', 'infrared']] # Standardize, create an instance of the standardization tool scaler = StandardScaler() # Standardize the feature data so that its mean is 0 and its variance is 1.

[0043] features_scaled = scaler.fit_transform(features) 4. Build and train the model Build a neural network model using TensorFlow: # Import the TensorFlow library.

[0044] import tensorflow as tf # Import the Sequential model class.

[0045] from tensorflow.keras.models import Sequential # Import the class for creating a fully connected layer.

[0046] from tensorflow.keras.layers import Dense # Build a model and define a sequential model consisting of a multi-layer neural network.

[0047] model = Sequential([ Dense(64, activation='relu', input_shape=(features_scaled.shape[1],)), #Add a hidden layer with 64 neurons and ReLU activation function.

[0048] Dense(32, activation='relu'), #Add a second hidden layer with 32 neurons.

[0049] Dense(1, activation='linear') # Output layer, with one neuron, used to predict moisture content, assuming the output is moisture content ]) # Compile the model, configure the model training method, use the Adam optimizer and the mean square error loss function.

[0050] model.compile(optimizer='adam', loss='mean_squared_error') # Train the model, start training the model, iterate 100 times, and use 10 data points each time.

[0051] model.fit(features_scaled, data['moisture_content'], epochs=100,batch_size=10) 5. Data analysis and prediction Use the model to make predictions: # Prediction, use the trained model to predict the standardized features.

[0052] predictions = model.predict(features_scaled) # Add the prediction results to the data to form a new column.

[0053] data['predicted_moisture']= predictions 6. Generate Report Generate analysis report using Matplotlib: # Import the Matplotlib library, which is used to draw charts.

[0054] import matplotlib.pyplot as plt # Visualize the prediction results, create a graph, and set the size.

[0055] plt.figure(figsize=(10, 6)) # Plot actual and predicted moisture contents.

[0056] plt.plot(data['moisture_content'],label='Actual Moisture') plt.plot(data['predicted_moisture'], label='Predicted Moisture') # Add a legend to show the meaning of different curves.

[0057] plt.legend() # Add chart title.

[0058] plt.title('Moisture Content Prediction') # Set the labels for the X and Y axes.

[0059] plt.xlabel('Sample Index') plt.ylabel('Moisture Content') # Save the chart as a PDF file.

[0060] plt.savefig('moisture_report.pdf') In addition, the same or similar element symbols are used to refer to the same or similar parts or steps in the drawings and descriptions as much as possible. The drawings are presented in simplified form and are not drawn to exact scale. For convenience and clarity only, directional terms such as top, bottom, front side, back side, left side, right side, front, back, upward, above, above, below, below, behind, and in front may be used with respect to the drawings. These and similar directional terms should not be construed as limiting the scope of the present disclosure in any way.

Claims

1. A coal moisture detection device, characterized in that: include: A drying box (1), wherein a test dish (9) for containing coal is provided in the drying box (1); A heating device, the heating device being mounted on the inner wall of the drying box (1) and being used to heat the detection dish (9); A dehumidifier (2), the dehumidifier (2) being fixedly connected to the top of the drying box (1) and used to remove water vapor generated after the coal is heated; One side of the dehumidifier (2) is connected to a telescopic tube (13) via a connecting tube, a conical cylinder (10) for collecting water vapor is fixedly connected to the bottom of the telescopic tube (13), and a filter screen is provided at the connection between the conical cylinder (10) and the telescopic tube (13); a stirring device, arranged in the telescopic tube (13) and used for stirring the coal in the detection dish (9); a scraping device, arranged on the stirring device and used to scrape coal particles remaining on the inner wall of the conical cylinder (10); The rotating device is fixedly connected to the top of the drying box (1) and is used to drive the stirring device and the scraping device to rotate.

2. A coal moisture detection device according to claim 1, characterized in that: The stirring device comprises a telescopic rod (18) penetrating through the connecting pipe, and a plurality of stirring rods (15) arranged at the bottom end of the telescopic rod (18).

3. A coal moisture detection device according to claim 2, characterized in that: The scraping device comprises an L-shaped scraper (19) fixedly connected to the telescopic rod (18), and the L-shaped scraper (19) abuts against the inner wall of the conical cylinder (10).

4. A coal moisture detection device according to claim 2, characterized in that: The rotating device comprises a motor (3), the motor (3) is fixedly connected to the top of the drying box (1), and the output end of the motor (3) is fixedly connected to the telescopic rod (18).

5. A coal moisture detection device according to claim 2, characterized in that: The drying box (1) has a mounting groove at the front side, in which a sliding door (5) is slidably connected; the drying box (1) also includes a connecting rod (14), one end of which passes through the telescopic tube (13) and is rotatably connected to the telescopic rod (18), and the connecting rod (14) is also slidably connected to a sliding groove provided on the inner side of the drying box (1); a traction rope (16) is fixedly connected to the bottom of the connecting rod (14), and one end of the traction rope (16) is fixedly connected to a stopper (17), and the stopper (17) is slidably connected to a through groove provided on the inner side of the drying box (1), and the through groove is connected to the mounting groove; a pulley is fixedly connected to the inner wall of the drying box (1), and the traction rope (16) is in contact with the pulley.

6. A coal moisture detection device according to claim 1, characterized in that: The heating device comprises an isolation plate (11) mounted on the inner wall of the drying box (1), a heating tube (12) being mounted on the isolation plate (11), and an air outlet hole being provided on the surface of the isolation plate (11).

7. A coal moisture detection device according to claim 2, characterized in that: The telescopic rod (18) comprises a sleeve (181) and a sleeve rod (182); a protrusion is provided on the side of the sleeve rod (182); and a square groove for slidingly mounting the protrusion is provided on the inner wall of the sleeve (181).

8. A coal moisture detection device according to claim 1, characterized in that: It also includes a placement rack (8) for mounting the detection dish (9), wherein the placement rack (8) is fixedly connected to the bottom of the inner wall of the drying box (1) via support legs.

9. A coal moisture detection device according to claim 2, characterized in that: A plurality of stirring rods are fixedly connected to the bottom of the stirring rod (15) at intervals.

10. A data analysis method, using the coal moisture detection device according to any one of claims 1 to 9, characterized in that: include: A sensor module for collecting and monitoring the moisture content of coal samples; A data transmission module, used to transmit the data collected by the sensor module to the central processing unit; A data storage module, used to store the data collected by the sensor module in a database; Algorithm analysis module, used to analyze collected data in real time by applying machine learning; The report generation module is used to generate a test report based on the data analyzed by the algorithm analysis module.

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