Automatic separant spraying system

The utility model discloses an automatic separant spraying system which comprises a rubber-tyred road roller, a separant system, a gas circuit system and a spraying device, oil blocking covers are fixed to the outer sides of spraying openings of the front wheel fan-shaped nozzles and the outer sides of spraying openings of the rear wheel fan-shaped nozzles. Wherein a plurality of brushes corresponding to tires of the rubber-tyred road roller are fixed on a vehicle body of the rubber-tyred road roller, and the brushes are positioned at the front ends of the front wheel fan-shaped nozzles or therear wheel fan-shaped nozzles. Compressed air and separant are provided through the air path system and the separant system and sprayed out through the front wheel fan-shaped nozzle or the rear wheelfan-shaped nozzle, automatic separant spraying is achieved, the working efficiency is improved, and the safety of workers is guaranteed. Meanwhile, the fan-shaped nozzle is used for spraying the separant, the oil blocking cov