Plate-and-frame filter press

The utility model discloses a plate-and-frame filter press and belongs to the technical field of sludge treatment. A plate-and-frame filter press comprises a filter plate and a machining mechanism, the inner end of an assembly mechanism is attached to a vibration motor, the assembly mechanism has certain elasticity, vibration generated in the operation process of the vibration motor cannot resonate on the whole device, the vibration motor drives a vibration cross rod to vertically swing, and therefore the filter plate can be machined. The bottom end face of the driving contact sheet plate drives the extrusion plate to vibrate at the same frequency, an object needing filter pressing performs transmission resonance, through transmission resonance of sludge, convex strips are arranged on the bottom end face of the driving extrusion plate, when the sludge is extruded, the contact area between the device and the sludge can be increased, more sludge makes contact with the device, and therefore the sludge can be ext