The weighing system starts the industrial computer to send a feeding signal to the PLC, the PLC controls the frequency converter for fast feeding, the weighing sensor sends the weight signal through the transmitter to the PLC, the PLC converts the analog signal into a digital signal, the signal is normalized and quickly added to a certain amount, the PLC controls the frequency converter for slow adding, when the advance amount is reached, the feeding is stopped.
020-34563445Weighing control system In view of the low weighing accuracy, low efficiency, large maintenance amount and strict requirements on materials, the automatic Batching system for small materials has the characteristics of strong adaptability, high efficiency, high weighing accuracy, small floor space and lax requirements on material characteristics. The star-shaped double helix and other feeding methods are adopted to ensure the speed and accuracy of automatic weighing, and the silos are all equipped with stirring devices to ensure the good fluidity of materials. The main machine adopts a novel push-sweep method to ensure that the weighed materials can be completely put into the main machine. This method does not need to break the arch, is free from maintenance, and is economical and convenient.
Weighing and batching system can meet the requirements of batching control accuracy and reduce the cost as much as possible through the proportion of raw materials. According to the difference of each batch of materials, the optimization calculation table is input into the database, and a visual man-machine interface is developed by using VisualBasic, so that the calculation data can be read and displayed in the interface, and the database application program can be created visually, which makes the application of the database more convenient and flexible, and supports the application of the network environment.
The weighing and feeding system installs a module at the bottom of the silo, and ensures the normal operation of the whole system through the precise control of the electrical program. The control objects of positive pressure pulse pneumatic conveying of acid are the exhaust valve, feed valve, discharge valve, pulse gas knife valve and inlet valve in the silo. The control mode is controlled by Siemens programmable controller, and the solenoid valves and motors are controlled by the operation of Proface touch screen, contactors and intermediate relays, which is convenient for debugging and maintenance.
Advantages of ingredients and product characteristics
1. Improve the labor productivity of the mixing and batching industry, ensure the stability of product quality, solve the pollution of working environment and relieve the heavy physical labor of batching staff.
2. Strong adaptability, high efficiency, high weighing accuracy, small floor space and lax requirements on material characteristics.
3. The control system adopts advanced frequency conversion technology, and single-phase or three-phase system power supply can be configured according to the field power supply, which is suitable for customers in different industries. The equipment is equipped with special frequency conversion motor as standard, which is easy to control the smoothness and accuracy of batching.
4. This equipment is easy to transform the mixing station, and it is not necessary to change the software of the upper computer, and high-precision control can be realized only by using the original fast and slow door signals of the system.
5. The Weighing system adopts digital weighing sensor, and the accuracy can reach one millionth. The weighing system has high linearity, and the driving part can achieve high resolution. Siemens PLC control, chain system and other control systems are used to meet the requirements of automatic production.
6. With advanced Feeder and advanced control system, the whole system can achieve high precision. Generally, the accuracy can reach 0.5-1%. In special fields such as laboratory, the application of experimental feeder can achieve the accuracy of 0. I-0.5%. Stability can reach 2 SEGMA.
7. It has an advanced monitoring system and controller, which is complicated in the debugging stage. However, after the debugging is over and all the parameters are set properly, all the operators do is to call the parameters and set the output.
8, with advanced control system, it is easy to complete the system fault diagnosis, which can shorten the troubleshooting time.
9. With the advanced monitoring system, it can complete messy recipe handling, order handling, history handling, system control optimization, automatic start-up and stop handling, chain handling, remote diagnosis, detection and control.
