Dry sludge crushing device

The invention discloses a dry sludge crushing device, and relates to the technical field of sludge treatment.The dry sludge crushing device comprises a machine body, the upper end of the machine body is provided with a feeding port, and the left side of the machine body is provided with a discharging port; the crushing part is used for carrying out crushing treatment on dry sludge, the crushing part comprises two rotary drums which are rotatably connected in the machine body, a plurality of crushing teeth are fixedly mounted on each of the two rotary drums, the plurality of crushing teeth on the two rotary drums are arranged in a staggered manner, and a synchronous assembly is mounted between the two rotary drums. The dry sludge crushing device has the advantages that in the dry sludge crushing process, the temperature of the two rotary drums can be automatically increased through rotation of the two rotary drums, part of wet sludge is dried, meanwhile, the crushed sludge is screened, the screened large-size