Starting maintenance power box for transformer substation

The invention is suitable for the technical field of power supply boxes, and provides a starting maintenance power supply box for a transformer substation, and the power supply box comprises a power supply box housing; the cooling fan is arranged at the top end in the power box shell; the bottom plate is arranged at the bottom end of the power box shell; the fixed frame is arranged in the bottom plate; wherein the interior of the fixing frame comprises two pressing plates arranged in the fixing frame, and the device has the beneficial effects that the handle is rotated to drive the lead screw to rotate, and the two pressing plates are driven to extrude the absorbent cotton, so that water in the absorbent cotton falls onto the filter screen, dust on the filter screen is washed away, and the filter screen is cleaned; water in the absorbent cotton and dust on the filter screen are cleaned, the air permeability of the absorbent cotton and the filter screen is improved, the heat dissipation efficiency of the devic