The ornamental design for the sand suction device, as shown and described.
FIG. 1 is a perspective view illustrating my design for a sand suction device;
FIG. 2 is a left side elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a front elevation view thereof;
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a right side elevation view thereof.
The broken lines depict environmental subject matter only and form no part of the claim. The broken lines shown on the foot plate of the sand suction device represent portions of the article that form no part of the claimed design.