Chain protection layer spraying equipment for chain machining

The invention discloses chain protection layer spraying equipment for chain machining, and relates to the technical field of chain machining. The chain protection layer spraying equipment comprises a spraying box, a plurality of first openings are formed in one side of the spraying box, a heat insulation plate is installed between the inner walls of the spraying box, and second openings matched with the first openings are formed in the heat insulation plate. According to the chain protection layer spraying equipment, a spiral spraying pipe is arranged in a spraying pipe, paint can be sprayed out through a plurality of discharging sprayers, and then the surface of a chain can be rapidly and comprehensively sprayed; through the special spiral structure of the spiral spraying pipe, the spiral spraying pipe has the good spraying effect on the inner side and the outer side of the chain, redundant paint sprayed by the discharging sprayers can flow out of the spraying pipe through a redundant paint outlet hole, then