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In recent years, with the development of automation control technology, computer technology, communication, network and other technologies, the field of information interaction and communication is rapidly covering from the field equipment layer of the factory to all levels of control and management. Therefore, more and more factory automation systems adopt the system structure of device bus, distributed control and centralized information management. This structure greatly reduces the project investment, effectively enhances the development and maintainability of the system, and shortens the design and development cycle. Allen Bradley's ControlLogix System is a high-tech product developed in accordance with this development direction. It provides complete processor specifications, powerful supporting function modules and tool software, and is suitable for various applications of medium to large-scale systems.
The automation control system used in PVC production line of the plant is the concrete application of Allen Bradley ControlLogix System, ControlNet, DeviceNet, flex I / O, remote I / O (Rio) and other new technologies. The system integrates program control, process control and working condition monitoring, and realizes the computer monitoring and control of the whole workshop process line.
The system consists of 8 units: pouring, premixing, atomizing, grinding, reaction, drying, grading and finished product packaging. The main equipment includes: Roots blower, cone mixer, atomization spray chamber, reactor, vibrating mill, classifier, dryer, high-speed mixer, bag filter, bucket elevator, screw feeder, iron remover, pneumatic valve, electric valve, etc.
Raw materials are sent from the raw material bin to the premixed unit bin through roots blower. In the premixed unit, raw materials and small materials are mixed according to a certain proportion. The high-speed mixer is used to heat and react to generate accessories, and then they are mixed with the raw materials in the cone mixer according to a certain proportion. After mixing, a certain amount of liquid is sprayed according to the process requirements for reaction.Dalian Tianyuan fine chemical PVC Co., Ltd. is the first large-scale PVC composite, filling and reinforcing agent production line in China, with a total investment of 40 million yuan and a designed annual output of 80000 tons. The automation control system used in PVC production line of the plant is the concrete application of Allen Bradley ControlLogix System, ControlNet, DeviceNet, flex I / O, remote I / O (Rio) and other new technologies. The system integrates program control, process control and working condition monitoring, and realizes the computer monitoring and control of the whole workshop process line.
