The ornamental design for a rotarypump, as shown and described.
FIG. 1 is a perspective view of a rotary pump showing our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a perspective view of a rotary pump showing a second embodiment of our new design;
FIG. 9 is a rear view of FIG. 8;
FIG. 10 is a front view of FIG. 8;
FIG. 11 is a right side view of FIG. 8;
FIG. 12 is a left side view of FIG. 8;
FIG. 13 is a top plan view of FIG. 8; and,
FIG. 14 is a bottom plan view of FIG. 8.
The broken lines in the drawings are intended to show portions of the rotary pump that are not being claimed, and thus form no part of the claimed design.