Lossless maintenance device for hollowing of block floor tiles

The utility model discloses a lump floor tile hollowing lossless maintenance device which comprises a material storage barrel and a liquid conveying pipe, the material storage barrel is a vertically-through hollow cylinder, the liquid conveying pipe is arranged at an opening in the top of the material storage barrel and communicated with the material storage barrel, a needle head is arranged at the end, away from the material storage barrel, of the liquid conveying pipe, and the needle head is connected with the liquid conveying pipe. A flow speed regulator is arranged in the middle of the infusion tube. The device has the advantages that the liquid conveying pipe for guiding cement grout to be conveyed into a hollowing area along gaps of the floor tiles and the needle head are arranged, the Portland cement grout in the material storage barrel is quantitatively conveyed into the hollowing position, the defective floor tiles do not need to be disassembled for re-pasting, the problems of material waste and tedi