The ornamental design for a liquid suctiondevice, as shown and described.
FIG. 1 is a perspective view of my liquid suction device showing a coiled flexible suction hose and a suction tube connected to the hose and a second flexible hose connected to the rear;
FIG. 2 is a perspective view of my liquid suction device, the flexible hose being shown in a stowed position and the suction tube parts of the sectioned suction tube inserted upright into receiving means at the bottom of the device;
FIG. 3 is a perspective front view of my liquid suction device showing the device housing without any auxiliaries for clarity of illustration; and,
FIG. 4 is a perspective rear view of my liquid suction device showing the device housing without any auxiliaries for clarity of illustration.
The claimed design is shown in FIG. 1. FIG. 2 is shown without the nozzle and FIGS. 3 and 4 are shown without the suction tube and the auxiliary hose for clarity of illustration.