Sieve-plate tower with small tower plate spacing

The utility model discloses a sieve-plate tower with small tower plate spacing. The sieve-plate tower comprises a barrel body, tower plates and a support frame, the tower plates and the support frames are arranged in the cylinder body, and the support frames are arranged between the adjacent tower plates; the tower plate is provided with a sieve pore area, a non-porous area, an overflow weir, a downcomer, a liquid receiving tank and a central disc; the central disc is arranged at the center of the tower plate, the sieve pore areas are distributed in a fan shape along the central disc, and the sieve pore areas of the upper and lower adjacent tower plates are staggered in the horizontal direction; the downcomer, the overflow weir and the liquid receiving tank are arranged at the non-porous area, the upper end of the downcomer is connected with the overflow weir of the upper tower plate, and the lower end of the downcomer is inserted into the liquid receiving tank of the lower tower plate, so that the liquid of