A type of XXM (A) Z240 square meter box filter press designed and produced by Shandong Coal Mine Laiwu Machinery Factory has recently passed the trial operation and officially put on the market. The product is an energy-efficient solid-liquid separation environmental protection product, which can be widely used in coal, metallurgy, chemical, non-ferrous metals and other industries. Compared with the old filter press, the energy saving effect of the machine is increased by 60%, the pressing speed is increased by 150%, the loosening speed is increased by 500%, the working efficiency is more than doubled, the weight of the whole machine is reduced by 1500kg compared with the same type of machine, and the manufacturing cost is reduced. 15%, with high cost performance and broad market prospects.