Split type double-water-channel water expansion machine

The utility model relates to the technical field of water expansion machines, and provides a split type double-water-channel water expansion machine which comprises a workbench. The first moving seat is movably arranged on the workbench; the first water expansion mechanism comprises a lower limiting piece arranged on a first moving seat; the plurality of upper limiting pieces are arranged on the first moving seat in a lifting manner; the multiple water passing pieces are movably arranged on the first moving seat, the moving direction of the water passing pieces is parallel to the direction of the first moving seat, and the water outlet ends of the water passing pieces are located between the upper limiting piece and the lower limiting piece; the second moving seat is movably arranged on the workbench, and the moving direction of the second moving seat is parallel to the moving direction of the first moving seat; and the second water expansion mechanism is arranged on the second moving seat. By means of the te