Pellet bursting strength on-line analysis system

Abstract

The invention discloses a pellet burst strength online analysis system, which comprises a ball receiving system, a detection box and an analysis system, the ball receiving system comprises a warping plate, a material taking baffle plate, a fulcrum, a balancing weight and a chute, the material taking baffle plate is arranged on the warping plate, the fulcrum is arranged below the warping plate, the warping plate is connected with the balancing weight, one end of the warping plate is arranged at an inlet of the chute, and an outlet of the chute is connected with the detection box. The analysis system comprises a camera, a heating device, a circulating fan, a measuring device, a programmable logic controller and an industrial control server, the camera is arranged on a detection box, the heating device is connected with the detection box and the circulating fan, the circulating fan is connected with the detection box, and the measuring device is connected with the detection box, the heating device and the circulating fan. The programmable logic controller is connected with the material taking baffle, the camera, the heating equipment, the circulating fan and the measuring device and transmits signals to the industrial control server, and the industrial control server records and analyzes the signals. According to the invention, real-time on-line analysis of the burst strength of the pellets is realized.

Description

Technical Field

[0001] The invention belongs to the field of pellet production, and relates to key parameter monitoring and analysis technology in the pellet production process, and specifically is an online analysis system for pellet burst strength. Background Art

[0002] In the industrial production process, the iron ore concentrate mixture needs to be mixed into pellets in the pelletizing plate, and these pellets are then roasted and consolidated at high temperature to finally form finished pellets with certain strength and hardness. The pellets need to have a certain burst strength to ensure that they do not burst into powder prematurely during the high-temperature roasting and consolidation process to avoid affecting subsequent production. Therefore, the real-time online sampling and analysis of the burst strength of the pellets is of great significance to improving the quality of the pellets.

[0003] At present, the detection of pellet burst strength mainly relies on manual visual inspection or intermittent sampling test, both of which have defects. Manual visual inspection is inefficient, highly subjective, and difficult to accurately control the test environment; intermittent sampling test cannot timely reflect the changing trend of pellet burst strength and has a large lag. In addition, the traditional pellet burst strength test method lacks data recording and analysis functions, making it difficult to conduct in-depth research on the burst data and thus optimize the pellet production process. Based on the current technology, there are already some solutions for pellet burst strength analysis. However, these solutions often still have deficiencies in terms of automation, test accuracy, and data analysis capabilities.

[0004] Most existing detection systems rely on offline detection, which requires a complex sample processing process to obtain data and cannot meet the immediate needs of the production process. The patent with publication number CN101545878A discloses a pellet burst temperature measurement device and method, which can simultaneously measure the burst temperature of multiple pellet samples. Although the patent has shown certain application potential in a laboratory environment, it cannot be directly applied to the field of industrial production. In the operating process of this patent, the pellets need to be manually placed in the spider plant. This process does not achieve the continuity and standardization of the detection process, which limits its application in efficient production lines. In addition, the patent also requires manual recording of the test results, which not only increases the risk of human error, but also slows down the overall production efficiency. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides an online analysis system for the bursting strength of pellets. The system combines technologies such as automatic material collection, precise heating and real-time monitoring to achieve real-time online analysis of the bursting strength of pellets.

[0006] The above object of the present invention is achieved through the following technical solutions:

[0007] The present invention provides an online analysis system for the bursting strength of pellets, comprising a ball receiving system, a detection box, and an analysis system. The ball receiving system comprises a seesaw, a material taking baffle, a fulcrum, a counterweight, and a chute. A material taking baffle is provided above the seesaw, a fulcrum is provided below the seesaw, one end of the seesaw is connected to the counterweight, an inlet of the chute is provided at the other end of the seesaw, and an outlet of the chute is connected to the detection box. The analysis system comprises a camera, a heating device, a circulating fan, a measuring device, a programmable logic controller, and an industrial control server. The camera is provided above the detection box, the inlet of the heating device is connected to the detection box, the outlet of the heating device is connected to the inlet of the circulating fan, and the outlet of the circulating fan is connected to the detection box. The measuring device is respectively connected to the detection box, the heating device, and the circulating fan. The measuring device is used to measure the temperature and air pressure of the detection box, the outlet temperature of the heating device, and the outlet air pressure of the circulating fan. The programmable logic controller is respectively connected to the material taking baffle, the camera, the heating device, the circulating fan, and the measuring device. The programmable logic controller transmits a signal to the industrial control server, and the industrial control server records and analyzes the signal.

[0008] According to one embodiment of the present invention, the detection box includes a heat-resistant glass cover, a grate plate, a pellet inlet, a motor, a heat insulation board a, a heat insulation board b, a heat insulation board c, and a heat insulation board d. The top surface of the detection box is a heat-resistant glass cover, the bottom surface of the detection box is a grate plate, and the side of the detection box is formed by connecting the heat insulation board a, the heat insulation board b, the heat insulation board c, and the heat insulation board d in sequence. The heat-resistant glass cover is provided with a pellet inlet near the chute outlet, the grate plate is hinged to the heat insulation board c, the motor is arranged at the lower part of the heat insulation board c, and the motor output shaft is connected to the grate plate.

[0009] According to one embodiment of the present invention, a closing plate and a spring are provided at the pellet entrance, the closing plate is hinged to the heat-resistant glass cover, one end of the spring is connected to the closing plate, and the other end of the spring is connected to the heat-resistant glass cover. When the pellet falls into the detection box through the pellet entrance, the closing plate is automatically closed under the action of the spring.

[0010] According to one embodiment of the present invention, the closing plate is made of a high temperature resistant lightweight material.

[0011] According to one embodiment of the present invention, the measuring device includes a thermal resistor a, a thermal resistor b, a pressure transmitter a, and a pressure transmitter b. The thermal resistor a is arranged on a heat-resistant glass cover, the thermal resistor b is arranged at the outlet of the heating device, the pressure transmitter a is arranged on the heat-resistant glass cover, and the pressure transmitter b is arranged at the outlet of the circulating fan.

[0012] According to one embodiment of the present invention, the motor is connected to a programmable logic controller, and the programmable logic controller drives the grate plate to rotate and tilt around the heat insulation plate c by controlling the motor.

[0013] According to one embodiment of the present invention, the analysis system further includes a display screen, and the industrial control server presents the analysis result on the display screen.

[0014] According to one embodiment of the present invention, the industrial control server uses a pattern recognition algorithm to count the pellets in the box, and uses an intelligent visual algorithm to analyze the rupture of the raw pellets.

[0015] The beneficial effects of the present invention compared with the prior art solutions are:

[0016] 1. The ball receiving system includes a seesaw, a material taking baffle, a fulcrum, and a counterweight. A material taking baffle is provided above the seesaw, a fulcrum is provided below the seesaw, a counterweight is provided on one side of the seesaw, and a chute is provided on the other side of the seesaw. The number of balls detected each time can be controlled by the cooperation of the material taking baffle, the fulcrum, and the counterweight. When the number of balls reaches a certain value, the seesaw can automatically tilt toward the chute to realize automatic material taking.

[0017] 2. The ball receiving system includes a chute, the chute inlet is located at the other end of the seesaw, the chute outlet is connected to the detection box, and the heat-resistant glass cover is provided with a pellet inlet near the chute outlet. Through the cooperation of the chute and the pellet inlet, it can ensure that all pellets enter the detection box, solving the problem of a large number of pellets easily scattering after leaving the seesaw, thus solving the problem of inaccurate detection quantity.

[0018] 3. The programmable logic controller is connected to the material taking baffle. By controlling the lifting and falling of the material taking baffle, it is possible to control whether the pellets are analyzed, and realize the intelligent analysis of the pellets. When analysis is required, the material taking baffle is controlled to fall, and the pellets enter the detection box through the chute. When analysis is not required, the material taking baffle is controlled to be lifted, and the pellets return to the production process from the counterweight end of the seesaw.

[0019] 4. A closing plate and a spring are provided at the pellet entrance. The closing plate is hinged with the heat-resistant glass cover. One end of the spring is connected to the closing plate, and the other end of the spring is connected to the heat insulation board a. When the pellet falls into the test box through the pellet entrance, the closing plate automatically closes under the action of the spring. Through the cooperation of the closing plate and the spring, after the pellet enters the test box, the pellet entrance is blocked by the closing plate, which can effectively prevent the temperature loss of the test box and affect subsequent testing.

[0020] 5. The grate plate is hinged with the insulation plate c, the motor is located at the bottom of the insulation plate c, and the motor output shaft is connected to the grate plate. The motor is operated to tilt the grate plate, so that a channel is formed between the grate plate and the insulation plate a, and the pellets that have been tested can be sent back to the production process through the newly formed channel at the bottom of the test box, reducing the waste of pellet resources.

[0021] 6. The analysis system also includes a display screen, and the industrial control server presents the analysis results on the display screen. Through the visualization results on the display screen, the bursting strength of the pellets can be intuitively understood, and the production process can be adjusted in real time accordingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] In the figure, 1, seesaw; 2, material removal baffle; 3, fulcrum; 4, counterweight; 5, chute; 6, detection box; 7, heat-resistant glass cover; 8, grate plate; 9, pellet inlet; 10, motor; 11, insulation board a; 12, insulation board b; 13, insulation board c; 14, insulation board d; 15, closing plate; 16, spring; 17, camera; 18, heating equipment; 19, circulating fan; 20, thermal resistor a; 21, thermal resistor b; 22, pressure transmitter a; 23, pressure transmitter b; 24, programmable logic controller; 25, industrial control server; 26, display screen. DETAILED DESCRIPTION

[0024] The present invention is described in detail below through specific embodiments, but the protection scope of the present invention is not limited thereto.

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] Example 1

[0028] like Figure 1As shown, this embodiment provides an online analysis system for the bursting strength of pellets, including a seesaw 1, a material removal baffle 2, a fulcrum 3, a counterweight 4, a chute 5, a detection box 6, a heat-resistant glass cover 7, a grate plate 8, a pellet inlet 9, a motor 10, a heat insulation board a11, a heat insulation board b12, a heat insulation board c13, a heat insulation board d14, a closing plate 15, a spring 16, a camera 17, a heating device 18, a circulating fan 19, a thermal resistor a20, a thermal resistor b21, a pressure transmitter a22, a pressure transmitter b23, a programmable logic controller 24, an industrial control server 25, and a display screen 26.

[0029] The seesaw 1 is a hard strip, the material taking baffle 2 is arranged above the middle, the fulcrum 3 is arranged below the middle of the seesaw 1, and the counterweight 4 is arranged at one end of the seesaw 1. By changing the position of the material taking baffle 2 and the fulcrum 3 relative to the seesaw 1, or changing the weight of the counterweight 4, the number of pellets detected each time can be changed.

[0030] A chute 5 is provided below the other end of the seesaw 1. The chute 5 is a passage for conveying pellets. The width of the chute 5 is just enough to allow a single pellet to pass through. When the seesaw 1 tilts downward due to the gravity of the pellets, the downward tilted end of the seesaw 1 can rest on the entrance of the chute 5. The pellets enter the chute 5 from the seesaw 1 under the action of gravity. The pellets enter the detection box 6 from the chute 5 in sequence.

[0031] The detection box 6 is a hollow cuboid, the top surface of which is a heat-resistant glass cover 7, the bottom surface of which is a grate plate 8, and the side surfaces of which are respectively composed of insulation boards a11, b12, c13 and d14 connected in sequence.

[0032] The heat-resistant glass cover 7 is made of transparent material. A hole is provided near the outlet of the chute 5. This hole is the pellet inlet 9. A closing plate 15 and a spring 16 are provided at the pellet inlet 9. The closing plate 15 is hinged to the heat-resistant glass cover 7. One end of the spring 16 is connected to the inner side of the closing plate 15, and the other end of the spring 16 is connected to the inner side of the heat-resistant glass cover 7. The closing plate 15 is a high-temperature resistant light material, such as aluminum silicate material, light clay material, light siliceous material, light high-aluminum material, expanded perlite product, refractory fiber, rock wool and glass wool; the closing plate 15 can just block the pellet inlet 9 under the action of the spring 16. The pellet comes out of the chute 5 and enters the detection box 6 through the pellet inlet 9. The closing plate 15 opens when the pellet passes through and allows the spring 16 to accumulate potential energy. When the pellet passes through, the closing plate 15 returns to its original position under the action of the spring 16.

[0033] The grate plate 8 is hinged to the insulation plate c13, the motor 10 is arranged at the lower part of the insulation plate c13, the output shaft of the motor 10 is connected to the grate plate 8, and the grate plate 8 can rotate around the insulation plate c13 under the action of the motor 10. After the grate plate 8 rotates around the insulation plate c13, a channel is generated between the grate plate 8 and the insulation plate a11, and the channel can allow the pellets to return to the production process. The grate plate 8 is a rectangular plate with multiple holes, and the holes can only allow hot air to pass through and prevent the pellets from passing through. The pellets fall on the grate plate 8 after entering the detection box 6.

[0034] The analysis system includes a camera 17, a heating device 18, a circulating fan 19, a measuring device, a programmable logic controller 24 and an industrial control server 25. The measuring device includes a thermal resistor a20, a thermal resistor b21, a pressure transmitter a22 and a pressure transmitter b23. The camera 17 collects the internal pellet information through the heat-resistant glass cover 7 and transmits the information to the programmable logic controller 24. The programmable logic controller 24 monitors the number of broken pellets in the heating process in real time through the camera 17. When the number of broken pellets reaches a predetermined value, the programmable logic controller 24 records the corresponding temperature and sends a signal to the industrial control server 25.

[0035] Thermal resistor a20 is arranged on the heat-resistant glass cover 7 to measure the temperature in the detection box 6, and the temperature measurement range is 0 to 600°C. Thermal resistor b21 is arranged at the outlet of the heating device 18 to measure the heating condition of the heating device 18, and the temperature measurement range is 0 to 500°C. Pressure transmitter a22 is arranged on the heat-resistant glass cover 7 to measure the air pressure in the detection box 6, and the pressure measurement range is 0 to 1kPa. Pressure transmitter b23 is arranged at the outlet of the circulating fan 19 to measure the air pressure at the outlet of the circulating fan 19, and the pressure measurement range is 0 to 5kPa. The circulating fan 19 is controlled in real time by the programmable logic controller 24 to keep the pressure state in the detection box 6 consistent with the state in industrial production. The heating device 18 can be selected from electric heaters, air heaters, gas heaters, fuel heaters, solar heaters, heat pump heaters, industrial hot air furnaces, etc.

[0036] The programmable logic controller 24 controls the temperature of the heating device 18 and the air supply intensity of the circulating fan 19. The camera 17 transmits the signal to the programmable logic controller 24. The programmable logic controller 24 transmits the information collected by the camera 17, the heating device 18, the circulating fan 19, and the measuring device to the industrial control server 25. The industrial control server 25 records and analyzes the information and displays the analysis results on the display screen 26. After the pellet detection is completed, the programmable logic controller 24 controls the grate plate 8 to rotate and tilt through the motor 10, and the pellets return to the production process under the action of gravity.

[0037] Example 2

[0038] A method for detecting a pellet burst strength online analysis system comprises the following steps:

[0039] S1: The camera 17 checks whether there are pellets in the detection box 6;

[0040] S2: After confirming that there are no pellets, lower the material removal baffle 2;

[0041] S3: The pellets fall onto the seesaw 1 from the production process. When the pellets accumulate to a certain value, the seesaw 1 is provided with a counterweight 4 at one end, and the pellets roll into the chute 5;

[0042] S4: lift the material removal baffle 2;

[0043] S5: the pellets pass through the chute 5 and enter the detection box 6 through the pellet inlet 9 of the detection box 6;

[0044] S6: Start the circulation fan 19;

[0045] S7: Read the values ​​of the pressure transmitter a22 and the pressure transmitter b23 from the display screen 26, adjust the power of the circulation fan 19, and keep the pressure in the detection box 6 consistent with the main system;

[0046] S8: Start the heating device 18 to continuously increase the heating temperature;

[0047] S9: Read the values ​​of thermal resistor a20 and thermal resistor b21 from the display screen 26;

[0048] S10: The camera 17 identifies the pellet rupture and transmits the temperature at the time of rupture to the programmable logic controller 24. The industrial control server 25 analyzes the information and displays the result on the display screen 26;

[0049] S11: The programmable logic controller 24 uses the motor 10 to rotate the grate plate 8 downward around the heat insulation plate c13 to transfer the pellets to the production process;

[0050] S12: Enter the next detection cycle.

[0051] The above-described embodiments are only preferred embodiments of the present invention, but not all feasible embodiments of the present invention. For those skilled in the art, any obvious changes made thereto without departing from the principles and spirit of the present invention should be considered to be included in the scope of protection of the claims of the present invention.

Claims

1. An online analysis system for pellet burst strength, characterized in that: The invention comprises a ball receiving system, a detection box (6), and an analysis system. The ball receiving system comprises a seesaw (1), a material taking baffle (2), a fulcrum (3), a counterweight (4), and a chute (5). The seesaw (1) is provided with a material taking baffle (2) above, and a fulcrum (3) is provided below the seesaw (1). One end of the seesaw (1) is connected to the counterweight (4). The entrance of the chute (5) is provided at the other end of the seesaw (1), and the outlet of the chute (5) is connected to the detection box (6). The analysis system comprises a camera (17), a heating device (18), a circulating fan (19), a measuring device, a programmable logic controller (24), and an industrial control server (25). The camera (17) is provided above the detection box (6), and the entrance of the heating device (18) is connected to the counterweight (4). The detection box (6) is connected, the outlet of the heating device (18) is connected to the inlet of the circulating fan (19), the outlet of the circulating fan (19) is connected to the detection box (6), the measuring device is respectively connected to the detection box (6), the heating device (18), and the circulating fan (19), the measuring device is used to measure the temperature and air pressure of the detection box (6), the outlet temperature of the heating device (18), and the outlet air pressure of the circulating fan (19), the programmable logic controller (24) is respectively connected to the material removal baffle (2), the camera (17), the heating device (18), the circulating fan (19), and the measuring device, the programmable logic controller (24) transmits the signal to the industrial control server (25), and the industrial control server (25) records and analyzes it.

2. The pellet burst strength online analysis system according to claim 1, characterized in that: The detection box (6) comprises a heat-resistant glass cover (7), a grate plate (8), a pellet inlet (9), a motor (10), a heat insulation board a (11), a heat insulation board b (12), a heat insulation board c (13), and a heat insulation board d (14); the top surface of the detection box (6) is the heat-resistant glass cover (7); the bottom surface of the detection box (6) is the grate plate (8); the side of the detection box (6) is formed by connecting the heat insulation board a (11), the heat insulation board b (12), the heat insulation board c (13), and the heat insulation board d (14) in sequence; the heat-resistant glass cover (7) is provided with a pellet inlet (9) near the outlet of the chute (5); the grate plate (8) is hinged to the heat insulation board c (13); the motor (10) is arranged at the lower part of the heat insulation board c (13); and the output shaft of the motor (10) is connected to the grate plate (8).

3. The pellet burst strength online analysis system according to claim 2, characterized in that: A closing plate (15) and a spring (16) are provided at the pellet inlet (9); the closing plate (15) is hinged to the heat-resistant glass cover (7); one end of the spring (16) is connected to the closing plate (15), and the other end of the spring (16) is connected to the heat-resistant glass cover (7); when the pellets pass through the pellet inlet (9) and fall into the detection box (6), the closing plate (15) is automatically closed under the action of the spring (16).

4. The pellet burst strength online analysis system according to claim 3, characterized in that: The closing plate (15) is made of a high temperature resistant and lightweight material.

5. The pellet burst strength online analysis system according to claim 1, characterized in that: The measuring device comprises a thermal resistor a (20), a thermal resistor b (21), a pressure transmitter a (22), and a pressure transmitter b (23); the thermal resistor a (20) is arranged on a heat-resistant glass cover (7), the thermal resistor b (21) is arranged at the outlet of a heating device (18), the pressure transmitter a (22) is arranged on the heat-resistant glass cover (7), and the pressure transmitter b (23) is arranged at the outlet of a circulating fan (19).

6. The pellet burst strength online analysis system according to claim 2, characterized in that: The motor (10) is connected to a programmable logic controller (24), and the programmable logic controller (24) drives the grate plate (8) to rotate and tilt around the heat insulation plate c (13) by controlling the motor (10).

7. The pellet burst strength online analysis system according to claim 6, characterized in that: The analysis system also includes a display screen (26), and the industrial control server (25) presents the analysis results on the display screen (26).

8. The pellet burst strength online analysis system according to claim 7, characterized in that: The industrial control server (25) uses a pattern recognition algorithm to count the pellets in the box, and uses an intelligent visual algorithm to analyze the rupture of the raw pellets.

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