Industrial rotary kiln material regulation and control system and method based on infrared temperature monitoring

Abstract

An industrial rotary kiln material regulation and control system based on infrared temperature monitoring comprises a single-lens rotary camera used for collecting infrared radiation emitted by an industrial rotary kiln, and the signal output end of an infrared camera of the single-lens rotary camera is connected with the signal input end of a data processor. The signal output end of the data processor is connected with the signal input end of the PLC and the signal input end of the cloud end, and the signal output end of the PLC is connected with the signal input end of a combustion fan of the industrial rotary kiln through the frequency converter. The signal output end of the PLC is connected with the signal input end of a first proportional electromagnetic valve and the signal input end of a second proportional electromagnetic valve of the industrial rotary kiln. The cloud terminal is in signal connection with a first stepping motor and a second stepping motor of the single-lens rotary camera through the PLC. Through accurate temperature data provided by the single-lens rotary camera and through combination with improvement of material feeding of the industrial rotary kiln, it is ensured that the industrial rotary kiln operates at the normal temperature for a long time.

Description

Technical Field

[0001] The invention relates to the technical field of industrial rotary kiln temperature monitoring, and in particular to an industrial rotary kiln material control system and method based on infrared temperature monitoring. Background Art

[0002] Infrared thermal imaging technology is a non-contact measurement technology that detects the infrared radiation energy emitted, reflected or transmitted by an object and converts it into a visible image, thereby reflecting the temperature distribution on the surface of the object. In recent years, with the advancement of infrared detector technology and signal processing technology, infrared thermal imaging systems have been widely used in many fields such as industrial inspection, equipment maintenance, fire safety, and scientific research. Traditional fixed or handheld infrared temperature sensors or infrared thermal imagers can usually only monitor the temperature within a fixed viewing angle, and it is difficult to achieve all-round and large-scale continuous monitoring, especially on large equipment such as rotary kilns. It is difficult to achieve panoramic coverage. In the case of limited field of view, it is difficult for traditional methods to generate a complete temperature distribution map of the equipment surface, which is not conducive to global temperature data analysis and processing. If you want to achieve multi-angle monitoring, you may need multiple infrared sensors or thermal imagers, which will not only increase the cost, but also make equipment installation and maintenance more complicated.

[0003] In the "Online Infrared Thermal Imager Application in Rotary Kiln Temperature Monitoring Solution" published on the official website of Huajingkang Optoelectronics Technology, it is proposed to use multiple fixed infrared thermal imagers to monitor the temperature of different areas of the rotary kiln at the same time and generate temperature distribution maps in real time, which improves the efficiency and accuracy of temperature monitoring. However, the fixed thermal imager has a fixed viewing angle and it is difficult to cover the entire rotary kiln, resulting in incomplete temperature data measurement.

[0004] The patent application document with publication number CN 114623682 A discloses a method for measuring and adjusting the air volume and fuel volume to control the temperature of the rotary kiln material. Based on the material characteristics in the direct reduction process of iron ore, it does not need to add magnetic nanoparticles. By utilizing the ferromagnetism of the material itself, under an external excitation magnetic field, the online temperature measurement purpose in the reduction process is achieved, which has the characteristics of "fast, accurate and convenient". However, the real-time performance of this method is limited by multi-point temperature measurement, which is easily interfered by the external magnetic field and environment, and the monitoring coverage is not flexible. At the same time, the hardware complexity and maintenance cost are high. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to propose an industrial rotary kiln material control system and method based on infrared temperature monitoring, which provides relatively accurate temperature data for the entire system through a single-lens rotating camera, combined with precise improvements to the material feeding of the industrial rotary kiln, to ensure that the industrial rotary kiln can operate at normal temperature for a long time, improve production safety and efficiency, reduce energy consumption and cost, and has the characteristics of wide applicability and easy maintenance.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A material control system for an industrial rotary kiln based on infrared temperature monitoring, comprising a single-lens rotary camera 1 for collecting infrared radiation emitted by an industrial rotary kiln 6, wherein a signal output end of an infrared camera 15 of the single-lens rotary camera 1 is connected to a signal input end of a data processor 2, and the signal output end of the data processor 2 is respectively connected to a signal input end of a PLC controller 3 and a signal input end of a cloud 4, and the signal output end of the PLC controller 3 is connected to a signal input end of a combustion-supporting fan 67 of the industrial rotary kiln 6 through a frequency converter 5, and the signal output end of the PLC controller 3 is respectively connected to signal input ends of a proportional solenoid valve 1 68 and a proportional solenoid valve 2 73 of the industrial rotary kiln 6; and the cloud 4 is respectively signal-connected to a stepper motor 1 13 and a stepper motor 2 17 of the single-lens rotary camera 1 through the PLC controller 3.

[0008] Furthermore, the industrial rotary kiln 6 includes a supporting wheel frame 61, on which a kiln body 63 is movably arranged through multiple groups of supporting wheels 62, a cooling cylinder 64 is arranged at one end of the kiln body 63, and the cooling cylinder 64 is respectively connected with a coal powder bin 66 and a combustion-supporting fan 67 through a coal injection pipe 65, a proportional solenoid valve 1 68 is arranged between the coal powder bin 66 and the coal injection pipe 65, and a discharge port 70 is arranged on the cooling cylinder 64 between the coal injection pipe 65 and the supporting base 69; a smoke chamber 71 is arranged at the other end of the kiln body 63, the smoke chamber 71 is connected with a feeding hopper 72, and a proportional solenoid valve 2 73 is arranged between the smoke chamber 71 and the feeding hopper 72.

[0009] Furthermore, the single-lens rotary camera 1 is arranged at intervals on one side of the center of the kiln body 63 of the industrial rotary kiln 6 .

[0010] Furthermore, the single-lens rotary camera 1 includes a stepper motor 13 arranged horizontally, a motor support frame 11 is arranged at one end of the stepper motor 13 located at the power output, a motor support frame 2 12 is arranged at the other end of the stepper motor 13, and a motor fixing sleeve 14 is arranged on the side of the motor support frame 11 away from the stepper motor 13; an infrared camera 15 is arranged on the table formed by the top of the motor support frame 11 and the motor support frame 2 12; a main bracket connecting block 16 is arranged at the bottom of the stepper motor 13, and the main bracket connecting block 16 A longitudinally arranged stepper motor 2 17 is arranged at the bottom, and an auxiliary support connector 18 is arranged at one end of the stepper motor 2 17 located at the power output, a motor fixing sleeve 2 19 is arranged at the bottom of the auxiliary support connector 18, and a base fixing plate 20 is arranged at the bottom of the motor fixing sleeve 2 19; the motor support frame 1 11, the motor support frame 2 12, the stepper motor 1 13, the motor fixing sleeve 1 14, the main bracket connecting block 16, the stepper motor 2 17 and the auxiliary support connector 18 are all arranged in the cavity of the main bracket 21 and are further fixed by the main bracket 21.

[0011] Furthermore, the infrared camera 15 includes a housing 151, in which an infrared image processor 152, an FPGA chip 153, an infrared sensitive semiconductor 154, a chip protection layer 155, a water-cooled radiator 156, a circuit connection substrate 157, a focus motor 158, a lens group 159 and a lens 160 are arranged; the infrared image processor 152 is connected to the water-cooled radiator 156 through a thread, and a lens 160 is arranged between the infrared image processor 152 and the water-cooled radiator 156. An adaptive chip protection layer 155, an FPGA chip 153 and an infrared sensitive semiconductor 154 are respectively embedded between the chip protection layer 155 and the infrared image processor 152, a circuit connection substrate 157 is arranged on one side of the infrared image processor 152, a focus motor 158 is arranged on the side of the circuit connection substrate 157 away from the infrared image processor 152, the focus motor 158 is provided with a lens 160 adapted to the through hole 161 of the shell 151, and a lens group 159 is embedded between the focus motor 158 and the lens 160.

[0012] Furthermore, an optical fiber line 162 is disposed on a side of the infrared image processor 152 away from the circuit connection substrate 157 , and the optical fiber line 162 is connected to a signal input terminal of the data processor 2 .

[0013] A water-cooling liquid pipe 163 is disposed on the side of the water-cooling radiator 156 away from the chip protection layer 155 , and the water-cooling liquid pipe 163 is connected to the water-cooling medium.

[0014] A material control method for an industrial rotary kiln based on infrared temperature monitoring comprises the following steps:

[0015] S1, when the industrial rotary kiln 6 is running, the user sends a command to the PLC controller 3 through the cloud 4, and the PLC controller 3 controls the stepper motor 13 and the stepper motor 2 17 of the single-lens rotary camera 1 to realize the rotation of the single-lens rotary camera 1; the infrared camera 15 of the single-lens rotary camera 1 collects infrared radiation emitted from different angles of the kiln body 63 of the industrial rotary kiln 6, and generates a temperature thermal image and transmits it to the data processor 2;

[0016] S2, after receiving the temperature thermal image transmitted in step S1, the data processor 2 analyzes and processes the temperature thermal image, transmits the processed image information to the cloud 4, and generates a corresponding control signal to transmit to the PLC controller 3;

[0017] S3. After the cloud 4 receives the image information processed in step S2, the user can view the real-time temperature curve, historical temperature data and temperature abnormality information at any time through the remote access function;

[0018] S4, after receiving the control signal generated in step S2, the PLC controller 3 sends control signals to the proportional solenoid valve 1 68 and the proportional solenoid valve 2 73 of the industrial rotary kiln 6 respectively, adjusts the opening of the proportional solenoid valve 1 68 and the proportional solenoid valve 2 73, and then adjusts the feed amount of the coal powder bin 66 and the feeding hopper 72; at the same time, the PLC controller 3 sends a control signal to the combustion-supporting fan 67 of the industrial rotary kiln 6 through the frequency converter 5 to adjust the air volume of the combustion-supporting fan 67.

[0019] Furthermore, based on the abnormal temperature information in step S3 , the user can send instructions to the PLC controller 3 through the cloud 4 to control the combustion-supporting fan 67 , the proportional solenoid valve 1 68 , and the proportional solenoid valve 2 73 .

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention is provided with a single-lens rotary camera 1 at one side of the center of the kiln body 63 of the industrial rotary kiln 6. Through the rotation of the kiln body 63 of the industrial rotary kiln 6 and the rotation of the single-lens rotary camera 1, multi-angle monitoring of the kiln body 63 is achieved, and the infrared radiation emitted by the kiln body 63 is basically covered in all directions, providing accurate temperature data for the monitoring of the entire system and the material delivery.

[0022] 2. The infrared camera 15 of the single-lens rotary camera 1 of the present invention adopts infrared thermal imaging technology, and can collect clear and stable temperature thermal images under various complex environmental conditions; in conjunction with high-precision stepper motor 13 and stepper motor 2 17, multi-angle temperature monitoring of the industrial rotary kiln 6 is achieved, with a wide coverage range, and can generate a relatively complete temperature distribution map, providing relatively accurate temperature data for the entire system.

[0023] 3. The present invention configures a proportional solenoid valve 1 68 between the pulverized coal bin 66 and the coal injection pipe 65 and a proportional solenoid valve 2 73 between the smoke chamber 71 and the feeding hopper 72, and combines the precise improvement of the material feeding of the industrial rotary kiln to ensure that the industrial rotary kiln 6 operates at a normal temperature for a long time, thereby improving the production efficiency of the industrial rotary kiln 6.

[0024] In summary, the present invention provides relatively accurate temperature data for the entire system through the single-lens rotary camera 1, combined with the precise improvement of the material feeding of the industrial rotary kiln 6, to ensure that the industrial rotary kiln 6 can operate at a normal temperature for a long time, thereby improving production safety and efficiency, reducing energy consumption and costs, and having wide applicability and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The overall structural block diagram of the industrial rotary kiln material control system based on single-mirror rotary infrared temperature monitoring of the present invention.

[0026] Figure 2 It is a schematic structural diagram of a single-lens rotary camera 1 and an industrial rotary kiln 6 of the present invention.

[0027] Figure 3 It is a schematic diagram of the overall structure of the single-lens rotating camera 1 of the present invention.

[0028] Figure 4 It is a three-dimensional exploded view of the single-lens rotating camera 1 of the present invention.

[0029] Figure 5 It is a three-dimensional exploded view of the infrared camera 15 of the present invention.

[0030] In the figure: 1, single-lens rotary camera; 11, motor support frame 1; 12, motor support frame 2; 13, stepping motor 13; 14, motor fixing sleeve 1; 15, infrared camera; 151, housing; 152, infrared image processor; 153, FPGA chip; 154, infrared sensitive semiconductor; 155, chip protection layer; 156, water cooling radiator; 157, circuit connection substrate; 158, focus motor; 159, lens group; 160, lens; 16, main bracket connection block; 17, stepping Inlet motor 2; 18. Auxiliary support connector; 19. Motor fixing sleeve 2 19; 20. Base fixing plate; 21. Main bracket; 2. Data processor; 3. PLC controller; 4. Cloud; 5. Frequency converter; 6. Industrial rotary kiln; 61. Support wheel frame; 62. Support wheel; 63. Kiln body; 64. Cooling cylinder; 65. Coal injection pipe; 66. Coal powder bin; 67. Combustion-supporting fan; 68. Proportional solenoid valve 1; 69. Support base; 70. Discharge port; 71. Smoke chamber; 72. Feed hopper; 73. Proportional solenoid valve 2. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] See also Figure 1 , an industrial rotary kiln material control system based on infrared temperature monitoring, comprising a single-lens rotary camera 1 for collecting infrared radiation emitted by an industrial rotary kiln 6, wherein the signal output end of the infrared camera 15 of the single-lens rotary camera 1 is connected to the signal input end of a data processor 2, the signal output end of the data processor 2 is respectively connected to the signal input end of a PLC controller 3 and the signal input end of a cloud 4, the signal output end of the PLC controller 3 is connected to the signal input end of a combustion-supporting fan 67 of the industrial rotary kiln 6 through a frequency converter 5, the signal output end of the PLC controller 3 is respectively connected to the signal input ends of a proportional solenoid valve 1 68 and a proportional solenoid valve 2 73 of the industrial rotary kiln 6; the cloud 4 is respectively connected to the stepper motor 1 13 and the stepper motor 2 17 of the single-lens rotary camera 1 through the PLC controller 3.

[0033] In this embodiment, a single-lens rotary camera 1 is used to collect infrared radiation emitted by an industrial rotary kiln 6, and the generated temperature thermal image is transmitted to a data processor 2. The data processor 2 analyzes and processes the temperature thermal image, transmits the processed image information to a cloud 4, and generates a corresponding control signal and transmits it to a PLC controller 3. After receiving the control signal, the PLC controller 3 sends control signals to the proportional solenoid valve 1 68, the proportional solenoid valve 2 73 and the combustion-supporting fan 67 of the industrial rotary kiln 6, respectively, to realize material regulation of the industrial rotary kiln 6, thereby ensuring that the operating temperature in the industrial rotary kiln 6 is normal and improving the production efficiency of the industrial rotary kiln 6. After receiving the image information processed by the data processor 2, the cloud 4 can view the real-time temperature curve, historical temperature data and temperature abnormality information at any time through the remote access function. The system not only improves production safety and efficiency, but also optimizes material regulation, reduces energy consumption and cost, and has the characteristics of wide applicability and easy maintenance.

[0034] Among them, the data processor 2 is implemented based on NXP LPC2119FBD64 / 01; the PLC controller 3 is implemented based on Siemens S7-1500; the proportional solenoid valve 1 68 and the proportional solenoid valve 2 73 are both implemented based on the Danfoss ABV series; the stepper motor 1 13 and the stepper motor 2 17 are both implemented based on the 42-type stepper motor.

[0035] like Figure 2As shown, the industrial rotary kiln 6 includes a wheel frame 61, on which a kiln body 63 is movably arranged through multiple sets of wheels 62, a cooling cylinder 64 is arranged at one end of the kiln body 63, and the cooling cylinder 64 is respectively connected with a coal powder bin 66 and a combustion-supporting fan 67 through a coal injection pipe 65, a proportional solenoid valve 1 68 is arranged between the coal powder bin 66 and the coal injection pipe 65, the coal powder bin 66, the combustion-supporting fan 67, and the cooling cylinder 64 are arranged on a support base 69 at one end away from the kiln body 63, and a discharge port 70 is arranged on the cooling cylinder 64 between the coal injection pipe 65 and the support base 69; a smoke chamber 71 is arranged at the other end of the kiln body 63, the smoke chamber 71 is connected with a feeding hopper 72, and a proportional solenoid valve 2 73 is arranged between the smoke chamber 71 and the feeding hopper 72.

[0036] In this embodiment, by configuring a proportional solenoid valve 1 68 between the coal powder bin 66 and the coal injection pipe 65 and a proportional solenoid valve 2 73 between the smoke chamber 71 and the feeding hopper 72, combined with the above-mentioned industrial rotary kiln material control system, accurate material delivery in the industrial rotary kiln 6 is achieved, the normal temperature operation of the industrial rotary kiln 6 is reasonably controlled, and the production efficiency of the industrial rotary kiln 6 is improved.

[0037] like Figure 2 As shown, the single-lens rotary camera 1 is arranged at intervals on one side of the center of the kiln body 63 of the industrial rotary kiln 6. In this embodiment, the length of the kiln body 63 of the industrial rotary kiln 6 is 50 to 70 meters, and the distance between the center of the kiln body 63 and the single-lens rotary camera 1 is 4 to 9 meters; according to the actual working conditions, the distance between the single-lens rotary camera 1 and the center of the kiln body 63 is reasonably adjusted to ensure that the single-lens rotary camera 1 has a panoramic coverage of the infrared radiation emitted by the kiln body 63.

[0038] like Figure 3 and Figure 4 As shown, the single-lens rotary camera 1 includes a stepper motor 13 arranged horizontally, a motor support frame 11 is arranged at one end of the stepper motor 13 located at the power output, a motor support frame 2 12 is arranged at the other end of the stepper motor 13, and a motor fixing sleeve 14 is arranged on the side of the motor support frame 11 away from the stepper motor 13; an infrared camera 15 is arranged on the table formed by the top of the motor support frame 11 and the motor support frame 2 12; a main bracket connecting block 16 is arranged at the bottom of the stepper motor 13, and the bottom of the main bracket connecting block 16 is provided with a main bracket connecting block 16. The main support frame 11 is provided with a longitudinally arranged stepper motor 17, and the stepper motor 17 is provided with an auxiliary support connector 18 at one end of the power output, and a motor fixing sleeve 19 is provided at the bottom of the auxiliary support connector 18, and a base fixing plate 20 is provided at the bottom of the motor fixing sleeve 19; the motor support frame 11, the motor support frame 12, the stepper motor 13, the motor fixing sleeve 14, the main support connecting block 16, the stepper motor 17 and the auxiliary support connector 18 are all arranged in the cavity of the main support 21 and are further fixed by the main support 21.

[0039] This embodiment realizes the rotation of the infrared camera 15 by controlling the stepper motor 13 and the stepper motor 2 17, and cooperates with the rotation of the kiln body 63 during the operation of the industrial rotary kiln 6 to realize multi-angle monitoring of the kiln body 63, basically covering the infrared radiation emitted by the kiln body 63 in all directions, and providing accurate temperature data for the monitoring of the entire system and the material delivery.

[0040] like Figure 5 As shown, the infrared camera 15 includes a housing 151, in which an infrared image processor 152, an FPGA chip 153, an infrared sensitive semiconductor 154, a chip protection layer 155, a water-cooled radiator 156, a circuit connection substrate 157, a focus motor 158, a lens group 159 and a lens 160 are arranged; the infrared image processor 152 is connected to the water-cooled radiator 156 through a thread, and a lens suitable for the infrared image processor 152 is arranged between the infrared image processor 152 and the water-cooled radiator 156. A chip protection layer 155 is provided, and an FPGA chip 153 and an infrared sensitive semiconductor 154 are respectively embedded between the chip protection layer 155 and the infrared image processor 152. A circuit connection substrate 157 is provided on one side of the infrared image processor 152, and a focus motor 158 is provided on the side of the circuit connection substrate 157 away from the infrared image processor 152. The focus motor 158 is provided with a lens 160 that is compatible with the through hole 161 of the shell 151, and a lens group 159 is embedded between the focus motor 158 and the lens 160.

[0041] like Figure 5 As shown, the infrared sensitive semiconductor 154 captures infrared radiation through the lens 160 and converts it into an electrical signal, which is transmitted to the infrared image processor 152 and the FPGA chip 153 for image data processing, thereby forming a high-definition temperature thermal image.

[0042] like Figure 5 As shown, an optical fiber line 162 is disposed on a side of the infrared image processor 152 away from the circuit connection substrate 157 , and the optical fiber line 162 is connected to a signal input terminal of the data processor 2 .

[0043] A water cooling liquid pipe 163 is disposed on the side of the water cooling radiator 156 away from the chip protection layer 155, and the water cooling liquid pipe 163 is connected to the water cooling medium. The water cooling radiator 156 can reduce the influence of the temperature of the industrial rotary kiln 6 on the infrared camera 15, and can also dissipate the heat generated by the infrared camera 15 when it is working.

[0044] A material control method for an industrial rotary kiln based on infrared temperature monitoring comprises the following steps:

[0045] S1, when the industrial rotary kiln 6 is running, the user sends a command to the PLC controller 3 through the cloud 4, and the PLC controller 3 controls the stepper motor 13 and the stepper motor 2 17 of the single-lens rotary camera 1 to realize the rotation of the single-lens rotary camera 1; the infrared camera 15 of the single-lens rotary camera 1 collects infrared radiation emitted from different angles of the kiln body 63 of the industrial rotary kiln 6, and generates a temperature thermal image and transmits it to the data processor 2;

[0046] S2, after receiving the temperature thermal image transmitted in step S1, the data processor 2 analyzes and processes the temperature thermal image, transmits the processed image information to the cloud 4, and generates a corresponding control signal to transmit to the PLC controller 3;

[0047] S3. After the cloud 4 receives the image information processed in step S2, the user can view the real-time temperature curve, historical temperature data and temperature abnormality information at any time through the remote access function;

[0048] S4, after receiving the control signal generated in step S2, the PLC controller 3 sends control signals to the proportional solenoid valve 1 68 and the proportional solenoid valve 2 73 of the industrial rotary kiln 6 respectively, adjusts the opening of the proportional solenoid valve 1 68 and the proportional solenoid valve 2 73, and then adjusts the feed amount of the coal powder bin 66 and the feeding hopper 72; at the same time, the PLC controller 3 sends a control signal to the combustion-supporting fan 67 of the industrial rotary kiln 6 through the frequency converter 5 to adjust the air volume of the combustion-supporting fan 67.

[0049] Based on the abnormal temperature information in step S3 , the user can send instructions to the PLC controller 3 through the cloud 4 to control the combustion-supporting fan 67 , the proportional solenoid valve 1 68 , and the proportional solenoid valve 2 73 .

[0050] On the one hand, the PLC controller 3 can realize automatic control of the materials in the industrial rotary kiln 6 by receiving the control signal transmitted by the data processor 2; on the other hand, the user can obtain the monitored temperature abnormality information through the cloud 4, and then send corresponding instructions to the PLC controller 3 through the cloud 4 to realize the control of the materials.

[0051] The working principle of the present invention is:

[0052] When the industrial rotary kiln 6 is in operation, a single-lens rotary camera 1 is arranged on one side of the center of the kiln body 63 of the industrial rotary kiln 6, and combined with the rotation of the kiln body 63 of the industrial rotary kiln 6, the infrared radiation emitted by the kiln body 63 is basically covered in all directions; the single-lens rotary camera 1 generates a temperature thermal image from the collected infrared radiation and transmits it to the data processor 2, the data processor 2 analyzes and processes the temperature thermal image, transmits the processed image information to the cloud 4, and generates a corresponding control signal and transmits it to the PLC controller 3; after receiving the control signal, the PLC controller 3 sends a control signal to the proportional solenoid valve 1 68, the proportional solenoid valve 2 73 and the combustion-supporting fan 67 of the industrial rotary kiln 6 respectively, to realize the material control of the industrial rotary kiln 6, thereby ensuring that the industrial rotary kiln 6 operates at a normal temperature for a long time and improving the production efficiency of the industrial rotary kiln 6; after the cloud 4 receives the image information processed by the data processor 2, the real-time temperature curve, historical temperature data and temperature abnormality information can be viewed at any time through the remote access function.

[0053] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An industrial rotary kiln material control system based on infrared temperature monitoring, characterized in that: The invention comprises a single-lens rotary camera (1) for collecting infrared radiation emitted by an industrial rotary kiln (6); the signal output end of an infrared camera (15) of the single-lens rotary camera (1) is connected to the signal input end of a data processor (2); the signal output end of the data processor (2) is respectively connected to the signal input end of a PLC controller (3) and the signal input end of a cloud (4); the signal output end of the PLC controller (3) is connected to the signal input end of a combustion-supporting fan (67) of the industrial rotary kiln (6) through a frequency converter (5); the signal output end of the PLC controller (3) is respectively connected to the signal input ends of a proportional solenoid valve 1 (68) and a proportional solenoid valve 2 (73) of the industrial rotary kiln (6); and the cloud (4) is respectively signal-connected to a stepper motor 1 (13) and a stepper motor 2 (17) of the single-lens rotary camera (1) through the PLC controller (3).

2. The industrial rotary kiln material control system based on infrared temperature monitoring according to claim 1, characterized in that: The industrial rotary kiln (6) comprises a wheel support frame (61), on which a kiln body (63) is movably arranged via a plurality of wheels (62); a cooling cylinder (64) is arranged at one end of the kiln body (63); the cooling cylinder (64) is respectively connected to a pulverized coal bin (66) and a combustion-supporting fan (67) via a coal injection pipe (65); a proportional solenoid valve 1 (68) is arranged between the pulverized coal bin (66) and the coal injection pipe (65); a discharge port (70) is arranged on the cooling cylinder (64) between the coal injection pipe (65) and a supporting base (69); a smoke chamber (71) is arranged at the other end of the kiln body (63); the smoke chamber (71) is connected to a feeding hopper (72); a proportional solenoid valve 2 (73) is arranged between the smoke chamber (71) and the feeding hopper (72).

3. An industrial rotary kiln material control system based on infrared temperature monitoring according to claim 1 or 2, characterized in that: The single-lens rotary camera (1) is arranged at intervals on one side of the center of a kiln body (63) of an industrial rotary kiln (6).

4. The industrial rotary kiln material control system based on infrared temperature monitoring according to claim 3 is characterized in that: The single-lens rotary camera (1) comprises a stepper motor (13) arranged transversely, a motor support frame (11) being arranged at one end of the stepper motor (13) located at the power output, a motor support frame (12) being arranged at the other end of the stepper motor (13), a motor fixing sleeve (14) being arranged at the side of the motor support frame (11) away from the stepper motor (13); an infrared camera (15) being arranged on the table formed by the top of the motor support frame (11) and the motor support frame (12); a main support connecting block (16) being arranged at the bottom of the stepper motor (13); A second stepper motor (17) is arranged longitudinally, and an auxiliary support connecting piece (18) is arranged at one end of the second stepper motor (17) located at the power output, and a second motor fixing sleeve (19) is arranged at the bottom of the auxiliary support connecting piece (18), and a base fixing plate (20) is arranged at the bottom of the second motor fixing sleeve (19); the first motor support frame (11), the second motor support frame (12), the first stepper motor (13), the first motor fixing sleeve (14), the main support connecting block (16), the second stepper motor (17) and the auxiliary support connecting piece (18) are all arranged in the cavity of the main support (21) and are further fixed by the main support (21).

5. The industrial rotary kiln material control system based on infrared temperature monitoring according to claim 4 is characterized in that: The infrared camera (15) comprises a housing (151), wherein an infrared image processor (152), an FPGA chip (153), an infrared sensitive semiconductor (154), a chip protection layer (155), a water-cooled radiator (156), a circuit connection substrate (157), a focus motor (158), a lens group (159) and a lens (160) are arranged in the housing (151); the infrared image processor (152) is connected to the water-cooled radiator (156) via a thread, and a lens (160) adapted to the infrared image processor (152) is arranged between the infrared image processor (152) and the water-cooled radiator (156). A chip protection layer (155) is provided, an FPGA chip (153) and an infrared sensitive semiconductor (154) are respectively embedded between the chip protection layer (155) and the infrared image processor (152), a circuit connection substrate (157) is provided on one side of the infrared image processor (152), a focus motor (158) is provided on the side of the circuit connection substrate (157) facing away from the infrared image processor (152), the focus motor (158) is provided with a lens (160) adapted to a through hole (161) of a housing (151), and a lens group (159) is embedded between the focus motor (158) and the lens (160).

6. The industrial rotary kiln material control system based on infrared temperature monitoring according to claim 5 is characterized in that: An optical fiber line (162) is arranged on a side of the infrared image processor (152) away from the circuit connection substrate (157), and the optical fiber line (162) is connected to a signal input end of a data processor (2).

7. The industrial rotary kiln material control system based on infrared temperature monitoring according to claim 5 is characterized in that: A water-cooling liquid pipe (163) is arranged on the side of the water-cooling radiator (156) facing away from the chip protection layer (155), and the water-cooling liquid pipe (163) is connected to a water-cooling medium.

8. An industrial rotary kiln material control method based on infrared temperature monitoring, characterized in that: The specific steps include: S1, when the industrial rotary kiln (6) is in operation, the user sends a command to the PLC controller (3) through the cloud (4), and the PLC controller (3) controls the stepper motor 1 (13) and the stepper motor 2 (17) of the single-lens rotary camera (1) to realize the rotation of the single-lens rotary camera (1); the infrared camera (15) of the single-lens rotary camera (1) collects infrared radiation emitted from the kiln body (63) of the industrial rotary kiln (6) at different angles, and generates a temperature thermal image and transmits it to the data processor (2); S2, after receiving the temperature thermal image transmitted in step S1, the data processor (2) analyzes and processes the temperature thermal image, transmits the processed image information to the cloud (4), and generates a corresponding control signal and transmits it to the PLC controller (3); S3. After the cloud (4) receives the image information processed in step S2, the user can view the real-time temperature curve, historical temperature data and temperature anomaly information at any time through the remote access function; S4, after receiving the control signal generated in step S2, the PLC controller (3) sends control signals to the proportional solenoid valve 1 (68) and the proportional solenoid valve 2 (73) of the industrial rotary kiln (6) respectively, so as to adjust the opening of the proportional solenoid valve 1 (68) and the proportional solenoid valve 2 (73), thereby adjusting the feed amount of the pulverized coal bin (66) and the feeding hopper (72); at the same time, the PLC controller (3) sends a control signal to the combustion-supporting fan (67) of the industrial rotary kiln (6) through the frequency converter (5), so as to adjust the air volume of the combustion-supporting fan (67).

9. The method for controlling materials in an industrial rotary kiln based on infrared temperature monitoring according to claim 8, characterized in that: Based on the abnormal temperature information in step S3, the user can send instructions to the PLC controller (3) through the cloud (4) to control the combustion-supporting fan (67), proportional solenoid valve 1 (68), and proportional solenoid valve 2 (73).

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