Rust-proof spraying device for connecting hardware fittings

The utility model relates to the related technical field of connection fitting processing, in particular to a connection fitting rust-proof spraying device which comprises a base, a support structure, a telescopic electric cylinder, a spraying nozzle, a brush head and rust-proof coating supply equipment, and a feeding pipe on the spraying nozzle is connected with a feeding port of the rust-proof coating supply equipment; according to the rust-proof spraying device for the connecting hardware fitting, the rust-proof spraying device for the connecting hardware fitting is composed of the base, the support structure, the telescopic electric cylinder, the spraying nozzle, the brush head and the rust-proof coating supply equipment, and the brush head is arranged to correspond to the mounting hole in the workpiece in position, so that the hole wall of the mounting hole is brushed through the brush head; therefore, the situation that the overall rust-proof effect of the workpiece is affected due to the fact that the