Filtering and washing all-in-one device and method

The invention discloses a filtering and washing all-in-one device and a method, belongs to the field of non-ferrous metallurgical industry solid-liquid separation and aims at solving the problems of great occupation area, difficult maintenance, high capital investment and production and operation cost and the like. The filtering and washing all-in-one device comprises a feeding system, a filteringwashing machine, a purge system and a discharging system, wherein the filtering washing machine comprises a casing, a thrust plate, a filter plate, a compression plate and a driving system; the thrust plate is arranged at one end of the inner side of the casing; the compression plate is arranged at the other end; the filter plate is arranged between the thrust plate and the compression plate; thedriving system is connected with the thrust plate; the discharging system is arranged at the bottom of the filtering washing machine; the purge system comprises an air compressor and an air storage tank. The filtering and was