The liquid distribution system adopts electromagnetic speed regulation, frequency conversion speed regulation (such as water-based paint), explosion-proof speed regulation (such as oil-based paint) and other forms. The stepless variable speed function can fully meet the different processing requirements of each processing process, and can choose different processing speeds according to different processing stages. At high and low mixing speed, the process of solid-liquid dispersion, wetting, depolymerization, stable weighing and metering control is completed by using a serrated disc dispersion plate at high speed.
020-34563445The Batching system consists of two dual-core computers, a Siemens S7-300 series programmable controller, five batching (weighing) meters and four temperature control meters, and an external printer. The temperature control instrument is connected to the analog input module of the PLC, that is, the instrument is connected to the analog input module of the PLC, the computer communicates with the PLC through the MPI port, and the data sharing of the two computers is realized through the HUB(8D-LINK). In addition, the PLC has a total of 224 switching input, 288 switching output, and 24 analog input and output to realize the data exchange with the remote I0 terminal of the outdoor raw material field control box on the first floor.
The two computers run Siemens WINCC monitoring software, communicate with the two communication ports of the programmable controller through their own communication ports, can run independently, play a mutual backup role, greatly improving the reliability of the system. The monitoring software can dynamically display the process flow of the entire production process, display the operation, failure and alarm status of each equipment, display process parameters such as temperature, pressure and so on, and can set parameters such as alarm value, timing parameters, batching (weighing) instrument. The monitoring software can also switch the manual automatic operation mode of the system, and the main motors and valves of the system can be manually operated in the manual mode. All operations and parameter Settings are password protected, and there are operator records (manual mode of entry must have the corresponding access permission).
The system also records the weight data of various materials, which are stored in the data and based on these data, reports such as shift, daily and monthly reports are produced. Moreover, the system also monitors the mixing temperature and pot wall temperature of the high cold mixer in real time, and has real-time curve tracking to monitor the real-time temperature of the material and pot wall and historical curve to query the historical temperature. In addition to complete the logic control of the entire production line, the programmable controller also communicates with six weighing instruments and ten temperature control instruments. In addition to reading each weight data, the working parameters of each instrument can be set to achieve remote monitoring. Due to the use of Siemens S7-300 programmable controller, the PLC is not only very fast (the fastest instruction 0.75 microsecond), but also supports structured programming, can prepare up to 254 programs according to the process flow, and supports multiple people at the same time debugging, very easy system development and operation maintenance.
