Tension leveling squeeze roll post-purge device

The utility model discloses a tension leveling squeeze roll post-purge device which comprises two fixed seats, a sliding groove, a drive screw, two sliding seats, two purging devices and a hand wheel. The two purging devices are fixed on the two sliding seats, each sliding seat is fixed with the drive screw and the sliding groove, the sliding seats can move relative to the drive screw and the sliding groove, the two ends of the drive screw and the two ends of the sliding groove are fixed on the two fixed seats respectively, the drive screw can rotate relative to the fixed seats, and one end of the drive screw penetrates through the fixed seat to be fixed with the hand wheel; each purging device comprises a connecting screw rod, a purging casing pipe, a purging pipe and a nozzle, nozzles are fixed with the purging casing pipes through the purging pipes, and purging casing pipes are fixed with the sliding seats through the connecting screw rods; each nozzle comprises a nozzle body, an air inlet cavity and multiple air outlets are formed in each nozzle body, and the air outlets are arranged in the shape of multiple concentric rings. The tension leveling squeeze roll post-purge device has the advantages of being large in scattering area, small in air consumption and convenient to use.