FIG. 1 is a front perspective view of a detergent pump head showing my new design;
FIG. 2 is a rear perspective view of the detergent pump head of FIG. 1;
FIG. 3 is a top plan view of the detergent pump head of FIG. 1;
FIG. 4 is a bottom plan view of the detergent pump head of FIG. 1;
FIG. 5 is a front view of the detergent pump head of FIG. 1;
FIG. 6 is side view of the detergent pump head of FIG. 1; and,
FIG. 7 is a rear view of the detergent pump head of FIG. 1.
The broken lines shown in the figures represent portions of the detergent pump head that form no part of the claimed design.