Vertical axial flow pump used for pumping sea water

The utility model provides a vertical axial flow pump used for pumping sea water. The vertical axial flow pump comprises a guide vane body, a water inflow horn and a filter screen; the guide vane body and the water inflow horn are fixedly connected through bolts; the filter screen is mounted at the bottom of the water inflow horn; an axial pump is arranged in the guide vane body; and an impeller component is arranged at the bottom of the axial pump. The vertical axial flow pump is characterized in that a turbine guide bearing is arranged below the impeller component and is supported by a support arranged in the water inflow horn. The turbine guide bearing is arranged in the water inflow horn, is placed below the impeller component and is soaked in sea water all the time, so that the phenomenon of dry friction overheating caused by tidal variation of sea water can be avoided. The vertical axial flow pump has the characteristics of simple structure, good using effect and the like.