Externally-hung axial-flow power pump spray propeller special for ships

The invention belongs to an externally-hung axial-flow power pump spray propeller special for ships. The externally-hung axial-flow power pump spray propeller comprises at least one dedusting device which is connected with a rubber spray pipe and a direction-adjusting connection pipe sequentially through at least one power propelling unit, each dedusting device comprises a dust scraping low-speed motor which is connected with a scraper through a spindle, a filter net is arranged outside each spindle between the corresponding dust scraping low-speed motor and the corresponding scraper, each power propelling unit comprises at least one shell, at least one pump spray motor and a turbofan connected with the pump spray motors, a filter net is mounted at a water inlet end of a shell, the rubber spray pipe is mounted at a water outlet end of the shell, and cross section area of the water inlet end of the shell is greater than that of the water outlet end of the shell. The externally-hung axial-flow power pump spray