Impeller structure, double-layer spraying system and cleaning machine

The utility model relates to an impeller structure, a double-layer spraying system and a cleaning machine. The multiple first blades are arranged on the outer circumferential wall of the middle shaft at intervals in the circumferential direction, and each first blade sequentially comprises a centrifugal section enabling fluid to be dispersed in the radial direction of the middle shaft and an axial flow section capable of sucking the fluid in the axial direction of the middle shaft in the respective axial direction; second blades capable of dispersing fluid in the radial direction of the middle shaft are arranged between every two adjacent axial flow sections of the middle shaft, and gaps are reserved between the second blades and the first blades. Water flow at different positions can be thrown out, namely water outlet at different positions is achieved, the requirement for double-layer spraying can be met through the impeller structure, and the requirement of a user can be better met. 本实用新型涉及一种叶轮结构、双层喷淋系统及清洗