选煤厂加压滤机控制系统设计毕业论文.docVIP

本科毕业论文 选煤厂加压过滤机控制系统设计 所 在 学 院 信息科学技术学院 专 业 名 称 自动化 申请学士学位所属学科 工 学 年 级 2008级 摘 要 大型、高效、耐用的选煤设备，已成为现代化煤矿产资源不可缺少的一部分。无论是炼焦煤还是动力煤，都必须进行洗选或筛分 ABSTRACT A large, efficient, durable coal preparation equipment modernization has become an indispensable part of coal mineral resources. Whether the coking coal or coal, must undertake washing or screening. Pressure filter is essentially a disc type vacuum filter in a sealed the cylindrical cabin pressure, driven by vacuum filter instead of filtering compressed air of a kind of solid-liquid separation equipment. In pressure filter internal blanking position of scraper conveyors, have under pressure storage lower in discharging device, with the coal water mixture filtered by feeding pump to pressurized warehouse internal liquid trough of groove, stay level gets to begin setting spindle motor to undertake dehydration homework. Pressurized warehouse internal blunt as certain pressure in the compressed air filter plate, with connected by distributing the formation water separator, atmospheric pressure in poor, so Pressurized warehouse internal pressure within the increment function, the liquid through dipped into the coal water mixture, and plant filter medium exclude was collected particle filter medium surface formation filter cake, with spindle motor rotation, in a certain region after drying arrives after counter blowing blanking area, filter cake fall scraper conveyor belt, the filter cake by discharging device to collect the buffer tank, thus enter discharging process. The plant by discharging system from outside cabin. So that the continuous operation in accordance with the above process. The dehydration process automatically. This design is aimed at the working pressure filter process designed a set of pressure filter automatic operation of the control system. By selecting the right controller and control alg