High-pressure water spraying reverse flushing device for grain suction roller

A high-pressure water-spraying back-flushing device for a grain suction roller comprises a central pipe shaft and a high-pressure water-spraying back-flushing system, wherein the grain suction roller is concentrically sleeved and fixedly supported on the central pipe shaft; the high-pressure water spraying back flushing assembly is installed on the central pipe shaft and arranged in the grain suction roller, the water inlet end of the high-pressure water spraying back flushing assembly is connected with the water supply system through the central pipe shaft, and the high-pressure water spraying back flushing assembly sprays detergent towards the inner wall of the grain suction roller. The central pipe shaft is used for replacing a mandrel of a traditional cleaning machine, stains left in air holes of the grain suction roller can be thoroughly removed, the stains attached to the inner wall of the grain suction roller can be cleaned more comprehensively, the cleaning effect is more ideal, and the air permeabili