Dynamic inspection and calibration system of constant feeder

Abstract

The invention discloses a dynamic inspection and calibration system of a constant feeder, which relates to the technical field of metering and calibration and comprises a dust early warning end, an electrostatic early warning end and a dynamic calibration end, the dust early warning end is used for calculating the deviation between the initial weight and the running weight of a conveying belt in real time by monitoring the weight of materials detected at different positions of the constant feeder in the feeding and conveying process in real time; the static early warning end is used for obtaining static abnormity in the material conveying process in time and removing static electricity in time when the static abnormity occurs. The dynamic calibration end is used for checking and judging whether the feeding weight deviates or not in real time, and dynamic checking, calibration and judgment are conducted in real time by combining the discharging amount of different discharging port angles. According to the dynamic inspection and calibration system of the constant feeder, the abnormal metering condition of the constant feeder can be found in time, the static electricity abnormity of material conveying can be judged in real time, and the material weight of the feeder can be accurately inspected in real time according to the actual dynamic change condition.

Description

Technical Field

[0001] The present invention relates to the technical field of metrological calibration, and particularly relates to a dynamic inspection and calibration system for a quantitative feeder. Background Art

[0002] The dynamic inspection and calibration of a quantitative feeder is a process of comparing and adjusting the actual material conveying amount with the set conveying amount during the operation of the equipment to ensure the accuracy and reliability of the feeder. The core function of the quantitative feeder is to accurately convey materials according to the preset feeding amount. Through dynamic inspection and calibration, the metering deviation that occurs during the actual operation of the feeder can be timely detected and corrected, ensuring that the feeding amount is consistent with the set value and meeting the precise requirements of the production process for the material amount. Accurate metering is crucial for production cost control.

[0003] Currently, there are some deficiencies in the use of quantitative feeders: 1. Dust may be generated during the feeding and conveying process of the quantitative feeder, and the dust will cause blockage of the ventilation ports of the weighing sensor and the speed sensor. The abnormal condition of the sensor cannot be timely judged, resulting in the inability to timely detect the metering abnormality of the quantitative feeder and affecting the use accuracy during the operation of the quantitative feeder; 2. In a dry and low-humidity environment, static electricity is easily generated during the conveying process of the material. The static electricity may adsorb some small and light impurities, which not only affects the purity of the conveyed material, but also the static electricity may interfere with the signals of the sensor and the control system, resulting in metering errors of the quantitative feeder. The static electricity abnormality of the material conveying cannot be timely judged according to the environmental parameters, resulting in limitations in the dynamic inspection and calibration of the quantitative feeder; 3. The calibration of the quantitative feeder needs to simulate the actual production conditions, and usually adopts the methods of hanging code calibration or physical calibration. However, the hanging code calibration can only be carried out in a static or low-speed state and cannot accurately simulate the dynamic situation. Although the physical calibration can better simulate the actual working conditions, the calibration process is cumbersome and time-consuming, and it is impossible to accurately calibrate the material weight of the feeder in real time according to the actual dynamic change situation.

[0004] Therefore, a dynamic inspection and calibration system for a quantitative feeder is proposed to solve the above problems. Summary of the Invention

[0005] The main purpose of the present invention is to provide a dynamic inspection and calibration system for a quantitative feeder to solve the problems mentioned in the above background.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a dynamic inspection and calibration system for a quantitative feeder, including a dust warning end, an electrostatic warning end and a dynamic calibration end, and a real-time monitoring and warning module is jointly set for the dust warning end, the electrostatic warning end and the dynamic calibration end; The dust warning terminal is used to calculate the captured dust volume in real time within the range of the feeding and conveying area, and set weighing sensors at multiple positions on the conveyor belt. By monitoring the discharging speed, transmission speed of the metering feeder during the feeding and conveying process, and the material weight detected at different positions of the conveyor belt in real time, the initial weight of the conveyor belt and the deviation of the running weight are calculated in real time; The static electricity warning terminal is used to analyze in real time whether static electricity will be generated during the conveying process of the metering feeder through the environmental parameters at the current moment, obtain the static electricity abnormality during the material conveying process in time, and remove the static electricity in time when static electricity abnormality occurs; The dynamic calibration terminal is used to measure the material distribution during transmission, and verify the feeding weight in real time to judge whether the feeding weight deviates. The discharging angle of the discharging port is calculated in real time, and dynamic inspection and calibration judgment are carried out in real time in combination with the discharging volume at different discharging port angles. When the discharging volume has an error, the discharging volume is controlled in real time; The real-time monitoring and warning module is used to report to the system when dust warning, static electricity warning and dynamic calibration abnormality occur, and issue a voice alarm reminder through the voice alarm in time.

[0007] The dust warning terminal includes a feeding area module, a device positioning module and a dust warning module; The feeding area module includes an area setting unit, a dust capture unit and a dust cleaning unit; The area setting unit is used to set the range of the feeding and conveying area of the feeder; The dust capture unit is used to calculate the captured dust volume in real time during the material conveying process within the feeding and conveying area range; The dust cleaning unit is used to set the dust safety threshold, calculate the difference between the dust volume and the dust safety threshold. If the difference is greater than 0, report to the system and turn on the high gear of the fan to realize the dust removal operation. If the difference is less than or equal to 0, report to the system and turn on the low gear of the fan to realize the dust removal operation.

[0008] The device positioning module includes a device positioning unit and a device synchronization unit; The device positioning unit is used to equip the device for conveying materials by the metering feeder. The outlet of the feeder is located above the conveyor belt, and the material position is monitored in real time through the positioning sensor to realize the real-time positioning of the devices included in the system; The device synchronization unit is used when the conveyor belt is running. The speed sensors and weighing sensors in multiple areas move synchronously with the conveyor belt to measure the conveying speed of the conveyor belt and the weight of each area of the conveyor belt in real time. At the same time, speed sensors are set on the rotating hubs of multiple gears in the conveyor belt to realize the speed measurement and area weighing at different positions of the conveyor belt.

[0009] The dust warning module includes a discharge port setting unit, a data monitoring unit, a sensor judgment unit, and a signal anomaly warning unit; The discharge port setting unit is used to set the discharge speed and discharge area of the discharge port according to the material standard feeding amount set by the system; The data monitoring unit is used to monitor the discharge speed, transmission speed, and material weights at different positions of the conveyor belt during the feeding and conveying process of the metering feeder in real time through a weighing sensor and a speed sensor; The sensor judgment unit is used to calculate the signal attenuation rate of multiple sensors in real time; The signal anomaly warning unit is used to set a signal intensity attenuation safety threshold, calculate the difference between the signal attenuation rate and the safety threshold. If the attenuation rate exceeds the safety threshold by 5%, it is determined that the sensor at the corresponding position has a dust blockage, report to the system to issue a voice alarm reminder, feedback for manual processing, and automatically turn on the high gear of the fan for dust suction.

[0010] The static electricity warning terminal includes an environment monitoring module, a static electricity judgment module, and a signal correction module; The environment monitoring module includes an environment collection unit and an environment impact unit; The environment collection unit is used to collect the environmental parameters during the material conveying process in real time through environmental monitoring equipment; The environment impact unit is used to respectively set the standard temperature, humidity, dust, air pressure, wind speed, vibration, noise, light, gas, and static electricity parameters during the material conveying process, calculate the difference between the monitored temperature, humidity, dust, air pressure, wind speed, vibration, noise, light, gas, and static electricity standard parameters. If it is greater than the safety value, it indicates that the material conveying is abnormal, report to the system, issue a warning reminder and feedback for manual processing. If it is less than or equal to the safety value, it indicates that the material conveying is normal.

[0011] The static electricity judgment module includes a static electricity monitoring unit and a removal equipment unit; The static electricity monitoring unit is used to calculate the static electricity generation rate during the dynamic conveying of materials in real time; The removal equipment unit is used to receive the static electricity influence anomaly signal in real time through a data receiver, connect the power supply of the static electricity elimination equipment, and realize static electricity removal through a static electricity eliminator.

[0012] The signal correction module includes a static electricity anomaly compensation unit and an influence warning unit; The static electricity anomaly compensation unit is used to collect the static electricity parameters at the current moment in real time through a data collector, compensate the surface resistivity of the conveyor belt during the material conveying process according to the calculated resistivity to achieve static electricity anomaly compensation, and judge whether the static electricity anomaly compensation is effective; The influence warning unit is used to report to the system to issue a voice alarm reminder and feedback for manual processing when the static electricity compensation is invalid.

[0013] The dynamic calibration end includes a distribution metering module, a real-time verification module, an error judgment module, and a metering compensation module; The distribution metering module includes a distribution receiving unit and a metering monitoring unit; The distribution receiving unit is used to perform distribution metering on the conveyed materials, and receive the metering weight at the corresponding position on the conveyor belt at the current moment through a data receiver. The material distribution metering calculates the material weights at different positions on the conveyor belt in real time based on the weighing sensors and speed sensors in multiple regions; The metering monitoring unit is used to calculate the material weight under dynamic changes during the operation of the conveyor belt in real time.

[0014] The real-time verification module includes a feeding receiving unit and a real-time verification unit; The feeding receiving unit is used to receive the standard feeding amount at different moments through a data receiver, and calculate the feeding amount at the discharge port at the current moment in real time; The real-time verification unit is used to set the standard feeding weight corresponding to different moments, calculate the difference between the material weights at different cross-sections at the corresponding moments and the standard feeding weight. If the difference is equal to 0, it means the material feeding is normal. If the difference is not equal to 0, it means the material feeding is abnormal; The error judgment module is used to receive the feeding amount at the current moment through a data receiver, calculate the difference between the feeding amount and the standard feeding weight corresponding to the current moment, and set an error safety value. If the difference between the feeding amount and the standard feeding weight corresponding to the current moment is greater than the error safety value, it means the feeding weight is abnormal, and the system is reported to issue a voice alarm reminder for manual processing. If the difference between the feeding amount and the standard feeding weight corresponding to the current moment is less than or equal to the error safety value, it means the feeding weight is normal.

[0015] The metering compensation module includes a discharge angle calculation unit, a discharge amount calculation unit, and a discharge amount control unit; The discharge angle calculation unit is used to calculate the discharge port angle of the feeder at the current moment in real time; The discharge amount calculation unit is used to calculate the discharge amount according to different discharge angles. The calculation formula is as follows: ; Where, M represents the discharge amount at different discharge angles, A represents the discharge port area, K represents the flow velocity coefficient, g represents the acceleration due to gravity, h represents the material layer height, θ represents the discharge angle, ρ represents the material density, and t represents the current moment when calculating the discharge amount; The discharge amount control unit is used to set the standard feeding weight at the corresponding moment, perform a secondary difference calculation between the discharge amount and the standard feeding weight. If the difference is greater than the error safety value, it indicates that the discharge amount is abnormal, and the system is reported to issue a voice alarm reminder and perform discharge amount control. If the difference is less than or equal to the error safety value, it indicates that the discharge amount is normal.

[0016] The present invention has the following beneficial effects: 1. In the present invention, by setting a dust warning end, during the dynamic inspection and calibration process of the metering feeder, by capturing and calculating the dust amount in real time within the range of the feeding and conveying area, and by real-time monitoring of the discharge speed, transmission speed, and the material weight detected at different positions of the conveyor belt during the feeding and conveying process of the metering feeder, it is possible to monitor in real time whether there is dust blockage in multiple sensors. Through the abnormal monitoring of sensor signals, the metering abnormality of the metering feeder can be discovered in time, improving the usage accuracy during the operation of the metering feeder.

[0017] 2. In the present invention, by setting an electrostatic warning end, during the dynamic inspection and calibration process of the metering feeder, by analyzing in real time whether static electricity will be generated during the conveying process of the metering feeder, the electrostatic abnormality during the material conveying process can be obtained in time, so that the static electricity generated during the conveying process of the system can be discovered and removed in time, avoiding static electricity from interfering with the signals of sensors and control systems, ensuring the metering error of the material conveying of the metering feeder, judging the electrostatic abnormality of the material conveying in time according to environmental parameters, and reducing the limitations existing during the dynamic inspection and calibration of the metering feeder.

[0018] 3. In the present invention, by setting a dynamic calibration end, during the dynamic inspection and calibration process of the metering feeder, by verifying the feeding weight in real time to judge whether the feeding weight deviates, and by combining the discharge angle to perform real-time calculation of the discharge amount, and by performing dynamic inspection and calibration judgment on the discharge amount at different discharge port angles in real time, it is possible to accurately calculate whether the discharge is abnormal in the dynamic situation. The calibration process is simple, and the material weight of the feeder can be accurately verified in real time according to the actual dynamic change situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall system architecture schematic diagram of a dynamic inspection and calibration system for a metering feeder of the present invention; Figure 2 is the schematic diagram of the structure of the dust warning end of a dynamic inspection and calibration system for a metering feeder of the present invention; Figure 3 is the schematic diagram of the structure of the electrostatic warning end of a dynamic inspection and calibration system for a metering feeder of the present invention; Figure 4 is the schematic diagram of the structure of the dynamic calibration end of a dynamic inspection and calibration system for a metering feeder of the present invention. Detailed implementation mode

[0020] To make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0021] Example 1, please refer to Figures 1 to 2 As shown: A dynamic inspection and calibration system for a quantitative feeder, including a dust warning end, an electrostatic warning end and a dynamic calibration end. The dust warning end, the electrostatic warning end and the dynamic calibration end are jointly provided with a real-time monitoring and warning module; The dust warning end is used to calculate the dust amount capture in real time within the range of the feeding and conveying area, and a weighing sensor is set at multiple positions on the conveyor belt. By monitoring the discharge speed, transmission speed and the material weight detected at different positions of the conveyor belt during the feeding and conveying process of the quantitative feeder in real time, the initial weight of the conveyor belt and the deviation of the running weight are calculated in real time; The electrostatic warning end is used to analyze in real time whether static electricity will be generated during the conveying process of the quantitative feeder through the environmental parameters at the current moment, obtain the static electricity abnormality during the material conveying process in time, and remove the static electricity in time when there is a static electricity abnormality; The dynamic calibration end is used to measure and calculate the distribution of the conveyed material, and check the feeding weight in real time to judge whether the feeding weight deviates. The discharging angle of the discharging port is calculated in real time, and dynamic inspection and calibration judgment is carried out in real time in combination with the discharging amount at different discharging port angles. When there is an error in the discharging amount, the discharging amount is controlled in real time; The real-time monitoring and warning module is used to report to the system when there are dust warnings, electrostatic warnings and dynamic calibration abnormalities, and issue a voice alarm reminder through a voice alarm in time.

[0022] The dust warning end includes a feeding area module, an equipment positioning module and a dust warning module; The feeding area module includes an area setting unit, a dust capture unit and a dust cleaning unit; The area setting unit is used to set the range of the feeding and conveying area of the feeder; The dust capture unit is used to calculate the dust amount capture in the material conveying process in real time within the range of the feeding and conveying area. The calculation formula is as follows: ; Wherein, is the dust amount in the material conveying process, k is the dust generation coefficient, which depends on the material characteristics. The material characteristics include particle size and humidity, is the density of the material, v is the conveying speed, A is the conveying cross-sectional area, and H is the drop height; The dust cleaning unit is used to set the dust safety threshold, calculate the difference between the dust amount and the dust safety threshold. If the difference is greater than 0, it reports to the system and turns on the high gear of the fan to achieve the dust removal operation. If the difference is less than or equal to 0, it reports to the system and turns on the low gear of the fan to achieve the dust removal operation.

[0023] The equipment positioning module includes an equipment positioning unit and an equipment synchronization unit; The equipment positioning unit is used for the equipment that equips the quantitative feeder to convey materials. The equipment includes a conveyor belt, a feeder, a weighing sensor, a speed sensor and a fan, and divides the conveyor belt into multiple areas. Weighing sensors and speed sensors are set in multiple areas. When there is no material on the conveyor belt, it is recorded as the first weight. When there is material on the conveyor belt, it is recorded as the second weight. Both the first weight and the second weight include the weight of multiple areas and the total area weight. The outlet of the feeder is located above the conveyor belt, and the position of the material is monitored in real time through a positioning sensor to achieve the real-time positioning of the equipment included in the system; The equipment synchronization unit is used when the conveyor belt is running. The speed sensors and weighing sensors in multiple areas move synchronously with the conveyor belt to measure the conveying speed of the conveyor belt and the weight of each area of the conveyor belt in real time. At the same time, speed sensors are set on the rotating hubs of multiple gears in the conveyor belt to achieve speed measurement and area weighing at different positions of the conveyor belt.

[0024] The dust warning module includes a discharge port setting unit, a data monitoring unit, a sensor judgment unit and a signal anomaly warning unit; The discharge port setting unit is used to set the discharge speed and discharge area of the discharge port according to the standard feeding amount of the material set by the system; The data monitoring unit is used to monitor the discharge speed, transmission speed and the material weight at different positions of the conveyor belt of the quantitative feeder in real time through the weighing sensor and the speed sensor; The sensor judgment unit is used to calculate the signal attenuation rate of multiple sensors in real time. The formula for calculating the signal attenuation rate is as follows: ; Where represents the standard signal strength of the corresponding sensor when there is no blockage, represents the signal strength of the corresponding sensor at the current moment; The signal anomaly warning unit is used to set the safety threshold for signal strength attenuation, calculate the difference of the signal attenuation rate safety threshold. If the attenuation rate exceeds the safety threshold by 5%, it is determined that the sensor at the corresponding position has dust blockage, and the system is reported to issue a voice alarm reminder, feedback for manual processing, and automatically turn on the high gear of the fan for dust suction. By real-time monitoring the discharging speed, transmission speed during the feeding and conveying process of the quantitative feeder, and the material weights detected at different positions of the conveyor belt, and real-time calculating the deviation between the initial weight and the running weight of the conveyor belt, as well as real-time monitoring whether multiple sensors have dust blockage. When the ventilation ports of the weighing sensor and the speed sensor are blocked by dust, it can be timely detected through the abnormal monitoring of the sensor signals, and the measurement abnormality of the quantitative feeder can be timely detected.

[0025] Example 2, please refer to Figure 3 As shown: Based on Example 1, the static electricity warning terminal includes an environment monitoring module, a static electricity judgment module, and a signal correction module; The environment monitoring module includes an environment collection unit and an environment impact unit; The environment collection unit is used to collect the environment parameters during the material conveying process in real time through environment monitoring equipment. The environment monitoring equipment includes a temperature sensor, a humidity sensor, a dust sensor, a pressure sensor, a wind speed sensor, a vibration sensor, a noise sensor, a light sensor, a gas sensor, and a static electricity sensor. The environment parameters include temperature, humidity, dust, pressure, wind speed, vibration, noise, light, gas, and static electricity; The environment impact unit is used to respectively set the standard temperature, humidity, dust, pressure, wind speed, vibration, noise, light, gas, and static electricity parameters during the material conveying process, calculate the difference of the monitored temperature, humidity, dust, pressure, wind speed, vibration, noise, light, gas, and static electricity standard parameters. If it is greater than the safety value, it indicates that the material conveying is abnormal, report to the system, issue a warning reminder for feedback for manual processing. If it is less than or equal to the safety value, it indicates that the material conveying is normal.

[0026] The static electricity judgment module includes a static electricity monitoring unit and a removal equipment unit; The static electricity monitoring unit is used to calculate the static electricity generation rate during the dynamic conveying of materials in real time. The calculation formula is as follows: ; Among them, represents the static electricity generation rate at the current moment, k represents the proportionality constant, v represents the material conveying speed, μ represents the friction coefficient of the conveyed material. Set the safety value of the static electricity generation rate. If the static electricity generation rate is greater than the safety value by 5%, it indicates that the static electricity influence during the material conveying process is abnormal, and the system is reported to issue a voice alarm reminder; The removal device unit is used to receive the electrostatic influence abnormal signal in real time through a data receiver, connect the power supply of the electrostatic eliminator, and achieve electrostatic removal through the electrostatic eliminator.

[0027] The signal correction module includes an electrostatic anomaly compensation unit and an influence warning unit; The electrostatic anomaly compensation unit is used to collect the electrostatic parameters at the current moment in real time through a data collector, compensate the resistivity of the conveyor belt surface during the process of conveying materials according to the calculated resistivity, and judge whether the electrostatic anomaly compensation is effective. The calculation formula is as follows: ; Among them, represents the resistivity of the conveyor belt surface, R represents the surface resistance of the conveyor belt, A represents the surface area of the conveyor belt, d represents the thickness of the materials on the conveyor belt, and the target resistivity represented by the conveyor belt is set. If the resistivity of the conveyor belt surface is less than or equal to the target resistivity, it means that the electrostatic anomaly compensation is effective; otherwise, it means that the electrostatic anomaly compensation is ineffective; The influence warning unit is used to report to the system to issue a voice alarm reminder for manual processing when the electrostatic compensation is ineffective, and perform electrostatic removal in time during electrostatic anomalies, so that in a dry and low-humidity environment, the static electricity generated by the materials during the conveying process can be detected and removed in time, avoiding static electricity from interfering with the signals of sensors and control systems, ensuring the metering error of the material conveying of the quantitative feeder, judging the electrostatic anomalies of the material conveying in time according to the environmental parameters, and reducing the limitations existing during the dynamic inspection and calibration of the quantitative feeder.

[0028] Example three, please refer to Figure 4 As shown: Based on Example one, the dynamic calibration end includes a distributed metering module, a real-time calibration module, an error judgment module, and a metering compensation module; The distributed metering module includes a distributed receiving unit and a metering monitoring unit; The distributed receiving unit is used to perform distributed metering on the conveyed materials and receive the metering weight at the corresponding position on the conveyor belt at the current moment in real time through a data receiver. The material distributed metering calculates the material weights at different positions on the conveyor belt in real time according to the weighing sensors and speed sensors in multiple regions. The calculation method is as follows: The conveyor belt is divided into n regions, the length of each region is Li, then the material weight of each region is Wi, and the total weight of the conveyor belt together with the materials is calculated , and the calculation formula is as follows: ; Calculate the material weight Q passing through a certain cross-section on the conveyor belt per unit time. The calculation formula is as follows: ; Among them, represents the total material weight on the conveyor belt, and v represents the conveyor belt speed. represents the total length of the conveyor belt; The metering and monitoring unit is used to calculate the material weight under dynamic changes during the operation of the conveyor belt in real time. The calculation formula is as follows: ; where W represents the total material weight during the operation of the conveyor belt, represents the instantaneous flow rate during the operation of the conveyor belt, t1 and t2 represent the time intervals. The difference between the total material weight and the first weight is calculated. If the difference is less than 0, it means that the material weight metering under the dynamic change of the conveyor belt is abnormal, and the system is reported to issue a voice alarm reminder. If the difference is greater than or equal to 0, it means that the material weight metering under the dynamic change of the conveyor belt is normal. Similarly, the material weight of each area on the conveyor belt can also be measured and monitored according to the calculation formula here.

[0029] The real-time verification module includes a feeding receiving unit and a real-time verification unit; The feeding receiving unit is used to receive the standard feeding amount at different times in real time through a data receiver, and calculate the feeding amount Q at the discharge port at the current moment. The calculation formula is as follows: ; where Q represents the feeding amount at the discharge port at the current moment, P represents the material density at the discharge port, C represents the flow coefficient at the discharge port. The flow coefficient depends on the material properties and the shape of the discharge port. A represents the effective opening area of the discharge port, and V represents the flow velocity of the material at the discharge port; The real-time verification unit is used to set the standard feeding weight corresponding to different times, and calculate the difference between the material weights of different cross-sections at the corresponding times and the standard feeding weight. If the difference is equal to 0, it means that the material feeding is normal. If the difference is not equal to 0, it means that the material feeding is abnormal; The error judgment module is used to receive the feeding amount at the current moment in real time through a data receiver, calculate the difference between the feeding amount and the standard feeding weight corresponding to the current moment, and set an error safety value. If the difference between the feeding amount and the standard feeding weight corresponding to the current moment is greater than the error safety value, it means that the feeding weight is abnormal, and the system is reported to issue a voice alarm reminder and feedback to manual processing. If the difference between the feeding amount and the standard feeding weight corresponding to the current moment is less than or equal to the error safety value, it means that the feeding weight is normal.

[0030] The metering compensation module includes a discharge angle calculation unit, a discharge amount calculation unit and a discharge amount control unit; The discharge angle calculation unit is used to calculate the discharge port angle θ of the feeder at the current moment in real time. The calculation formula is as follows: θ = a·ρ + b·d + c·μ; Among them, ρ represents the material density, d represents the average particle size of the material, μ represents the material friction coefficient, and a, b, and c represent the empirical coefficients of the granular material; The discharge amount calculation unit is used to calculate the discharge amount according to different discharge angles, and the calculation formula is as follows: ; Among them, M represents the discharge amount at different discharge angles, A represents the discharge port area, K represents the flow velocity coefficient, g represents the acceleration due to gravity, h represents the height of the material layer, θ represents the discharge angle, ρ represents the material density, and t represents the current moment for calculating the discharge amount; The discharge amount control unit is used to set the standard feeding weight at the corresponding moment, perform a secondary difference calculation between the discharge amount and the standard feeding weight. If the difference is greater than the error safety value, it means that the discharge amount is abnormal, and the system is reported to issue a voice alarm reminder and perform discharge amount control. If the difference is less than or equal to the error safety value, it means that the discharge amount is normal. The discharge amount at different discharge port angles is used for real-time dynamic inspection and calibration judgment, and the discharge amount control is performed in real time when there is an error in the discharge amount, so that the calibration of the quantitative feeder can accurately calculate whether the discharge in the dynamic situation is abnormal in the actual production condition. The calibration process is simple and can accurately calibrate the material weight of the feeder according to the actual dynamic change situation in real time.

[0031] In the present invention, there is a dynamic inspection and calibration system for a quantitative feeder. When operating this system, first, set the feeding and conveying area range of the feeder, and capture and calculate the dust quantity in real time within the feeding and conveying area range, and perform real-time positioning on the equipment included in the system. Weighing sensors are respectively set at multiple positions on the conveyor belt, and speed sensors are set on the rotating hubs of multiple gears. Set the discharging speed and discharging area of the discharging port. By real-time monitoring the discharging speed, transmission speed during the feeding and conveying process of the quantitative feeder and the material weight detected at different positions of the conveyor belt, and real-time calculating the initial weight and operation weight deviation of the conveyor belt, and real-time monitoring whether there is dust blockage in multiple sensors. When the ventilation ports of the weighing sensor and the speed sensor are blocked by dust, it can be timely detected through abnormal sensor signal monitoring, and the measurement abnormality of the quantitative feeder can be timely detected, improving the use accuracy during the operation of the quantitative feeder; by real-time monitoring the environmental parameters within the corresponding area range during the operation of the quantitative feeder, analyze in real time whether static electricity will be generated during the conveying process of the quantitative feeder based on the environmental parameters at the current moment, and real-time detect the static electricity parameters during the material conveying process through a static electricity detector. If the static electricity is abnormal, perform real-time static electricity abnormal compensation calculation, timely obtain the static electricity abnormality during the material conveying process, and remove the static electricity in time when the static electricity is abnormal, so that in a dry and low-humidity environment, the static electricity generated during the material conveying process can be timely detected and removed, avoiding static electricity from interfering with the signals of sensors and control systems, ensuring the material conveying measurement error of the quantitative feeder, timely judging the static electricity abnormality of the material conveying according to the environmental parameters, and reducing the limitations existing during the dynamic inspection and calibration of the quantitative feeder; and by measuring the distribution of the conveyed material, and real-time receiving the measured weight at the corresponding position on the conveyor belt at the current moment through a data receiver, and timely verifying the feeding weight to judge whether the feeding weight deviates, set a weight error threshold, calculate the discharging angle of the discharging port in real time, calculate the discharging quantity in real time in combination with the discharging angle, perform dynamic inspection and calibration judgment on the discharging quantity in real time through the discharging quantity at different discharging port angles, and perform discharging quantity control in real time when the discharging quantity is in error, so that during the calibration of the quantitative feeder in actual production conditions, it can accurately calculate whether the discharging is abnormal in the dynamic situation, the calibration process is simple, and the material weight of the feeder can be accurately verified in real time according to the actual dynamic change situation.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A dynamic inspection and calibration system for a quantitative feeder, characterized in that: The dynamic inspection and calibration system of the quantitative feeder includes a dust warning terminal, an electrostatic warning terminal and a dynamic calibration terminal, and the dust warning terminal, the electrostatic warning terminal and the dynamic calibration terminal are jointly provided with a real-time monitoring and warning module; The dust warning terminal is used to capture and calculate the dust amount in real time within the feeding and conveying area, and to set weighing sensors at multiple positions on the conveyor belt. By real-time monitoring the discharge speed and transmission speed of the quantitative feeder during the feeding and conveying process and the weight of the material detected at different positions of the conveyor belt, the initial weight and running weight deviation of the conveyor belt can be calculated in real time. The static electricity warning terminal is used to analyze in real time whether static electricity will be generated during the conveying process of the quantitative feeder through the current environmental parameters, timely obtain static electricity anomalies during the material conveying process, and timely remove static electricity when static electricity is abnormal; The dynamic calibration end is used to measure the distribution of the transmitted materials, and to verify the feeding weight in real time to determine whether the feeding weight is deviated, to calculate the discharging angle of the discharging port in real time, to perform dynamic inspection and calibration in real time in combination with the discharging amount at different discharging port angles, and to control the discharging amount in real time when an error occurs in the discharging amount; The real-time monitoring and warning module is used to report to the system when dust warning, static electricity warning and dynamic calibration abnormality occur, and to issue a voice alarm reminder in time through a voice alarm.

2. The system according to claim 1, characterized in that The dust warning terminal includes a feeding area module, an equipment positioning module and a dust warning module; The feeding area module includes an area setting unit, a dust capturing unit and a dust cleaning unit; The area setting unit is used to set the feeding and conveying area range of the feeder; The dust capture unit is used to calculate the dust capture amount during material conveying in real time within the feeding and conveying area. The calculation formula is as follows: ； in, is the amount of dust in the material conveying process, k is the dust generation coefficient, which depends on the material characteristics, including particle size and humidity. is the density of the material, v is the conveying speed, A is the conveying cross-sectional area, and H is the drop height; The dust cleaning unit is used to set the dust safety threshold, calculate the difference between the dust amount and the dust safety threshold, if the difference is greater than 0, report to the system, turn on the high gear of the fan to achieve dust removal operation, if the difference is less than or equal to 0, report to the system, turn on the low gear of the fan to achieve dust removal operation.

3. The system according to claim 2, characterized in that The device positioning module includes a device positioning unit and a device synchronization unit; The equipment positioning unit is used for equipment equipped with a quantitative feeder to convey materials. The equipment includes a conveyor belt, a feeder, a weighing sensor, a speed sensor and a fan, and the conveyor belt is divided into multiple areas. Weighing sensors and speed sensors are set in multiple areas. No material on the conveyor belt is recorded as a first weight, and material on the conveyor belt is recorded as a second weight. The first weight and the second weight both include multi-area weights and total area weights. The outlet of the feeder is located above the conveyor belt, and the material position is monitored in real time by a positioning sensor to achieve real-time positioning of the equipment included in the system; The equipment synchronization unit is used for when the conveyor belt is running. The speed sensors and weighing sensors in multiple areas move synchronously with the conveyor belt to measure the conveying speed of the conveyor belt and the weight of each area of ​​the conveyor belt in real time. At the same time, speed sensors are set on the rotating hubs of multiple gears in the conveyor belt to realize speed measurement and area weighing at different positions of the conveyor belt.

4. The system according to claim 3, characterized in that The dust warning module includes a discharge port setting unit, a data monitoring unit, a sensor judgment unit and a signal abnormality warning unit; The discharge port setting unit is used to set the discharge speed and discharge area of ​​the discharge port according to the standard material feeding amount set by the system; The data monitoring unit is used to monitor the discharging speed, transmission speed and material weight at different positions of the conveyor belt of the quantitative feeder in real time during the feeding and conveying process through a weighing sensor and a speed sensor; The sensor judgment unit is used to calculate the signal attenuation rate of multiple sensors in real time. The signal attenuation rate calculation formula is as follows: ； in, Indicates the standard signal strength of the corresponding sensor when there is no blockage. Indicates the signal strength of the corresponding sensor at the current moment; The signal abnormality warning unit is used to set the signal strength attenuation safety threshold, and to perform difference calculation on the signal attenuation rate threshold and the safety threshold. If the attenuation rate exceeds the safety threshold by 5%, it is determined that the sensor at the corresponding position is clogged with dust, and the reporting system issues a voice alarm reminder, provides feedback for manual processing, and automatically turns on the fan to a high dust suction position.

5. The system according to claim 1, characterized in that The static electricity early warning terminal includes an environment monitoring module, a static electricity judgment module and a signal correction module; The environmental monitoring module includes an environmental collection unit and an environmental impact unit; The environment acquisition unit is used to collect environmental parameters in the material conveying process in real time through environmental monitoring equipment. The environmental monitoring equipment includes a temperature sensor, a humidity sensor, a dust sensor, an air pressure sensor, a wind speed sensor, a vibration sensor, a noise sensor, a light sensor, a gas sensor and an electrostatic sensor. The environmental parameters include temperature, humidity, dust, air pressure, wind speed, vibration, noise, light, gas and static electricity; The environmental impact unit is used to set the standard temperature, humidity, dust, air pressure, wind speed, vibration, noise, light, gas and static electricity parameters in the material transportation process, and calculate the difference of the monitored temperature, humidity, dust, air pressure, wind speed, vibration, noise, light, gas and static electricity standard parameters. If it is greater than the safety value, it means that the material transportation is abnormal, and the system is reported to issue an early warning reminder for manual processing. If it is less than or equal to the safety value, it means that the material transportation is normal.

6. The system according to claim 5, characterized in that The static electricity determination module includes a static electricity monitoring unit and a removal device unit; The static electricity monitoring unit is used to calculate the static electricity generation rate in real time during the dynamic material conveying process. The calculation formula is as follows: ； in, Indicates the static electricity generation rate at the current moment, k indicates the proportional constant, v indicates the material conveying speed, μ indicates the friction coefficient of the conveyed material, and sets the static electricity generation rate safety value. If the static electricity generation rate is greater than the safety value by 5%, it means that the static electricity effect during the material conveying process is abnormal, and the reporting system will issue a voice alarm reminder; The removal device unit is used to receive static electricity influence abnormality signals in real time through a data receiver, connect to a static electricity elimination device power supply, and realize static electricity removal through the static electricity eliminator.

7. The system according to claim 6, characterized in that The signal correction module includes a static anomaly compensation unit and an impact warning unit; The electrostatic anomaly compensation unit is used to collect the electrostatic parameters at the current moment in real time through a data acquisition instrument, and realize electrostatic anomaly compensation according to the resistivity of the conveyor belt surface during the material conveying process by calculating the resistivity compensation, and judge whether the electrostatic anomaly compensation is effective. The calculation formula is as follows: ； in, Indicates the resistivity of the conveyor belt surface, R indicates the surface resistance of the conveyor belt, A indicates the surface area of ​​the conveyor belt, d indicates the thickness of the material on the conveyor belt, and sets the target resistivity of the conveyor belt. If the resistivity of the conveyor belt surface is less than or equal to the target resistivity, it indicates that the electrostatic abnormality compensation is effective, otherwise, it indicates that the electrostatic abnormality compensation is invalid; The impact warning unit is used to send a voice alarm to the reporting system to remind feedback for manual processing when the electrostatic compensation is invalid.

8. The system according to claim 1, characterized in that The dynamic calibration end includes a distribution metering module, a real-time verification module, an error judgment module and a metering compensation module; The distribution metering module includes a distribution receiving unit and a metering monitoring unit; The distribution receiving unit is used to measure the distribution of the transmitted materials and receive the measured weight of the corresponding position on the conveyor belt at the current moment in real time through the data receiver. The material distribution measurement calculates the weight of the materials at different positions on the conveyor belt in real time according to the weighing sensors and speed sensors in multiple areas. The calculation method is as follows: Divide the conveyor belt into n areas, the length of each area is Li, and the weight of the material in each area is Wi. Calculate the total weight of the conveyor belt together with the material , the calculation formula is as follows: ； Calculate the weight Q of the material passing through a certain section of the conveyor belt per unit time. The calculation formula is as follows: ； in, represents the total weight of materials on the conveyor belt, v represents the conveyor belt speed, Indicates the total length of the conveyor belt; The metering monitoring unit is used to calculate the weight of materials under dynamic changes during the operation of the conveyor belt in real time. The calculation formula is as follows: ； Where W represents the total weight of the material during the operation of the conveyor belt. It indicates the instantaneous flow rate during the operation of the conveyor belt. t1 and t2 indicate the time interval. The difference between the total weight of the material and the first weight is calculated. If the difference is less than 0, it means that the material weight measurement under the dynamic change of the conveyor belt is abnormal, and the reporting system issues a voice alarm reminder. If the difference is greater than or equal to 0, it means that the material weight measurement under the dynamic change of the conveyor belt is normal. Similarly, the material weight in each area is measured and monitored through the calculation formula.

9. The system according to claim 8, characterized in that The real-time verification module includes a feeding receiving unit and a real-time verification unit; The feeding receiving unit is used to receive the standard feeding amount at different times in real time through the data receiver, and calculate the feeding amount Q of the discharge port at the current time in real time. The calculation formula is as follows: ； Among them, Q represents the feeding amount of the discharge port at the current moment, P represents the material density of the discharge port, C represents the flow coefficient of the discharge port, the flow coefficient depends on the material properties and the shape of the discharge port, A represents the effective opening area of ​​the discharge port, and V represents the flow velocity of the material at the discharge port; The real-time verification unit is used to set the standard feeding weight corresponding to different moments, and calculate the difference between the material weight of different cross-sections at the corresponding moment and the standard feeding weight. If the difference is equal to 0, it means that the material feeding is normal, and if the difference is not equal to 0, it means that the material feeding is abnormal; The error judgment module is used to receive the current feeding amount in real time through the data receiver, calculate the difference between the feeding amount and the standard feeding weight corresponding to the current moment, and set the error safety value. If the difference between the feeding amount and the standard feeding weight corresponding to the current moment is greater than the error safety value, it means that the feeding weight is abnormal, and the reporting system sends a voice alarm reminder and feedback is manually processed. If the difference between the feeding amount and the standard feeding weight corresponding to the current moment is less than or equal to the error safety value, it means that the feeding weight is normal.

10. The system according to claim 9, characterized in that The metering compensation module includes a discharge angle calculation unit, a discharge amount calculation unit and a discharge amount control unit; The discharge angle calculation unit is used to calculate the discharge port angle θ of the feeder at the current moment in real time, and the calculation formula is as follows: θ = a·ρ+b·d+c·μ; Among them, ρ represents the material density, d represents the average particle size of the material, μ represents the material friction coefficient, and a, b, and c represent the empirical coefficients of the granular material; The discharge amount calculation unit is used to calculate the discharge amount according to different discharge angles, and the calculation formula is as follows: ； Wherein, M represents the discharge amount at different discharge angles, A represents the discharge port area, K represents the flow rate coefficient, g represents the gravity acceleration, h represents the material layer height, θ represents the discharge angle, ρ represents the material density, and t represents the current time when the discharge amount is calculated; The discharge quantity control unit is used to set the standard feeding weight at the corresponding moment, and perform a secondary difference calculation between the discharge quantity and the standard feeding weight. If the difference is greater than the error safety value, it indicates that the discharge quantity is abnormal, and the reporting system issues a voice alarm and controls the discharge quantity. If the difference is less than or equal to the error safety value, it indicates that the discharge quantity is normal.

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