Sludge recycling device for sewage treatment

The invention discloses a sludge recycling device for sewage treatment, and relates to the technical field of sewage treatment, the sludge recycling device comprises a sewage storage assembly for storing sewage, a filter pressing assembly communicated with the sewage storage assembly, and a high-pressure feeding pump assembly for pumping the sewage into the filter pressing assembly; the sewage storage assembly comprises a water bucket, a water outlet pipe communicated with the bottom end of the water bucket, a hydraulic structure in the water bucket and a sludge pretreatment structure arranged in the water outlet pipe. The device disclosed by the invention can be used for pretreating sludge contained in sewage before filter pressing of the sewage, and grinding and crushing large sludge blocks, so that pipeline blockage is avoided, and the subsequent filter pressing efficiency is improved; besides, through the arrangement of filter cloth, waterproof cloth and a water inlet hole, sewage in a filter chamber can