Drilling device for water pump impeller machining

The utility model belongs to the technical field of drilling, and particularly relates to a water pump impeller machining drilling device. A clamping groove is formed in the middle of a drilling table; a supporting rod is fixedly connected to the middle of the drilling table. The multiple sets of supporting rods are arranged in the middle of the drilling table. Rotating shafts are arranged at the end parts of the supporting rods; the rotating shaft is rotationally connected with the supporting rod; a pressing strip is arranged in the middle of the rotating shaft; the pressing strip is fixedly connected with the rotating shaft; a limiting grid is arranged in the middle of the pressing strip; a plurality of groups of limiting grids are arranged in the middle of the pressing strip; a round hole is formed in the middle of the drilling table; according to the step, when the impellers need to be drilled, the impellers of different sizes can be fixed, so that when the impellers of different sizes are drilled, the si