Fireproof spraying powder preparation system

The utility model relates to the technical field of powder coating preparation, in particular to a fireproof spraying powder preparation system. The production line sequentially comprises a premixingmachine, an extruding machine, a cooling device, a crushing device and a screening device, the cooling device comprises two cooling rollers which are arranged below a discharge hole of the extruder inparallel and opposite to each other and have opposite rotating directions; a conveying mechanism is arranged below the cooling rollers; the conveying mechanism comprises a conveying belt and a driving part for driving the conveying belt; a cooling cover is arranged above the conveying belt in a covering manner; an air cooler for blowing air into the cooling cover is arranged on the cooling cover;the crushing device comprises two crushing rollers which are oppositely arranged in parallel at one end, far away from the cooling rollers, of the conveying belt and are opposite in rotating direction, and further comprises a