The invention relates to an anti-seepage liquid spraying device for
basement drainage, and belongs to the technical field of
basement drainage, the anti-seepage liquid spraying device comprises a mounting base, a material box is arranged on the bottom face, facing a
drainage ditch, of the mounting base, anti-seepage liquid is contained in the material box, a spraying
pipe is arranged at the bottom of the mounting base, nozzles are arranged at the two ends of the spraying
pipe, and the material box communicates with the spraying
pipe; a conveying pump is arranged in the material box, the
coating pipe is rotationally arranged on a mounting seat, and a first driving part is arranged on the mounting seat; the
nozzle is rotationally arranged at the end of the spraying pipe, the rotating axis of the
nozzle is coaxial with the spraying pipe, and a second driving piece used for driving the spraying pipe to rotate is arranged on the spraying pipe. The
nozzle is in a flat opening shape, the nozzle is located in the splicing seam when the nozzle sprays the anti-
permeation liquid into the splicing seam, and after the anti-
permeation liquid in the splicing seam is sprayed, the nozzle rotates to be perpendicular to the splicing seam so as to spray the anti-
permeation liquid to the two sides of the splicing seam. The method has the effect of improving the
dryness of the
basement.