Sodium hypochlorite adding device for waterworks

The utility model belongs to the technical field of tap water processing, and particularly relates to a tap water plant sodium hypochlorite adding device which comprises a storage box body used for containing sodium chlorate, and a plurality of double-layer hollow filter screens used for separating the inner space of the storage box body at equal intervals are arranged in the storage box body. Sealing cloth used for sealing the double-layer hollow filter screen is arranged in the double-layer hollow filter screen, and one end of an inner cavity of the double-layer hollow filter screen is rotationally connected with a first torsional spring cloth winding shaft used for winding the sealing cloth. The internal space of the storage box body is equally divided by the plurality of partition assemblies, so that sodium chlorate in the storage box body can be equally divided synchronously, and the sodium chlorate can be conveniently and quantitatively put; meanwhile, the influence on other sodium chlorate due to the f