The invention discloses a bidirectional cross-flow washing and air-
drying vertical filter press and a working method thereof, and belongs to the technical field of
vertical filter presses. Aiming at the defects of poor working condition adaptability, low effective thickness of a
filter cake, non-uniform washing and air-
drying effects,
high energy consumption and maintenance cost and the like of the traditional
vertical filter press adopting a single-layer filter cloth and rubber
diaphragm structure, the invention cancels a rubber diaphragm, adopts a diaphragm-free structure in which the
filter cake is clamped by double-layer filter cloth, and designs a bidirectional cross-flow washing and air-
drying process in a matched manner; by switching the opening and closing states of the
pneumatic valve group, washing water and
compressed air respectively enter from the back surfaces of the two
layers of filter cloth, pass through the
filter cake in two directions and then are discharged. According to the invention, the effective thickness of the filter cake is increased, the productivity is synchronously improved, the washing effect and the
air drying effect are improved under the same condition, the adaptability of the equipment to high-temperature, strong-acid and strong-alkali working conditions is enhanced, the manufacturing cost and the maintenance difficulty are reduced, online regeneration of the filter cloth can be realized, and the device is suitable for
solid-liquid separation treatment of various materials.