Pneumatic ash conveying system is an environmental protection system that collects and reuses the industrial chimney dust through a series of pneumatic conveying equipment, so as to meet the emission standards stipulated by the state and make reasonable reuse of the dust. Because society, production and life are closely related to air, therefore, pneumatic ash transport field has made a great contribution to environmental protection, air purification and haze alleviation, and has constituted a special industrial application.

      This project adopts WinMO PLC specific model DPH60Y24R to expand 16-point input DPH16EX, 16-point output DPH16EYR, 4-way analog input DPH-4AD, WinMO HMI specific model PSM071W, WinMO frequency converter specific model VFT0075 t4; Through WinMO PLC to achieve the control and management of the whole system, through WinMO man-machine screen to pneumatic conveying system monitoring and operation, improve production efficiency, reduce costs.

     The actual picture of the scene is as follows:

      1. System function description

      Through the integrated control system, it can realize better automatic adjustment and control of the pneumatic conveying system, such as the flow, current state, parameter setting, real-time pressure curve, alarm record, etc. Through the manual and automatic free switch, to achieve a more ideal control effect, greatly improve the work efficiency.

       The function diagram of the system is as follows:

     2, WinMO PSM touch screen function and operation

     2.1 Main screen of furnace body

      The system is divided into 1#, 2# and 3# furnace bodies. The control page of each furnace body is basically the same. The main screen mainly contains automatic hand switching and operation, furnace material level position, the status of each valve, real-time pressure of pipelines and important alarm information

      2.2. Real-time pressure curve

       The real time pressure curve is used to display the real time pressure value of 1#~3# furnace body conveying pipeline, and there are related warnings

      2.3 Alarm record

       Alarm record will record the alarm system at any time, and give an alarm sound

       2.4 Parameter setting

      The parameter setting page mainly sets the pressure alarm value according to the actual situation, as well as the section process in the system conveying process

      3. Application of WinMO frequency converter

      WinMO VFT frequency converter in this system plays a role in the output of the ash system to the ash storage of the ash volume regulation, to ensure that the ash into the ash storage is not blocked, to ensure the smooth operation of the system, through WinMO PLC according to the real-time pressure value to control the speed of 6 sections, average 2 seconds for fast switching.

     4. Conclusion

      Winmo man-machine, PLC, frequency converter with the pneumatic ash system system application more popular. Winmo products are used in this industry is numerous, users are good response, stable and convenient operation. A complete pneumatic ash conveying system, the perfect combination of software and hardware, comprehensive WINMO products, stable performance and strong compatibility are the advantages of our products, a brief introduction of which the more important parts.