Pneumatic filter press water tank

The utility model relates to the technical field of filter pressing equipment, in particular to a pneumatic filter press water tank which comprises a tank body, the tank body is provided with an upper opening and a lower opening, the bottom of the tank body is connected with a water storage tank, the top of the water storage tank is provided with an opening and is fixedly connected with the bottom of the tank body, one side of the bottom of the water storage tank is provided with a sinking tank, and the periphery of the bottom surface of the water storage tank inclines downwards towards the sinking tank. A water outlet is formed in the outer side of the sinking groove, a detachable filter screen is arranged at the joint of the water storage tank and the groove body, air cylinders are arranged on the two sides of the groove body, the air cylinders are horizontally and fixedly arranged on a filter press rack, the ends of telescopic rods of the air cylinders are connected with the two outer side walls of the gro