Automatic pre-cleaning system for coating

The utility model provides an automatic coating pre-cleaning system which comprises a liquid preparation box and a pre-scrubbing chamber, a liquid outlet of the liquid preparation box is provided with a power pump, and a scrubbing agent is conveyed into the pre-scrubbing chamber through the power pump and a liquid conveying pipe; a cleaning area is arranged in the middle of the pre-scrubbing chamber, a floor drain is installed in the cleaning area, a plurality of sets of automatic spraying pipes are further symmetrically installed in the pre-scrubbing chamber, a plurality of water passing brushes are arranged in the pre-scrubbing chamber at equal intervals, and liquid inlets of the water passing brushes and liquid inlets of the automatic spraying pipes are communicated with a liquid outlet of a liquid feeding pipe. The scrubbing agent is fed into the water through brush and the automatic spraying pipe through the liquid feeding pipe; the liquid preparation box and the pre-scrubbing chamber are arranged, the p