Filtering device of water inlet pipe at upper part of large-diameter mixed bed

The utility model discloses a filtering device of a water inlet pipe at the upper part of a large-diameter mixed bed. The filtering device comprises an upper-layer supporting hole plate, a lower-layer supporting hole plate and a stainless-steel screen mesh, wherein the stainless-steel screen mesh is arranged between the upper-layer supporting hole plate and the lower-layer supporting hole plate. The filtering device disclosed by the utility model has the advantages that by addition of the filtering device, resin particles are effectively prevented from leaking out to enter a thermodynamic system.