Large-flow partition-plate-type spraying and flushing device of deepwater trencher

A large-flow partition-plate-type spraying and flushing device of a deepwater trencher in the field of special-purpose excavators comprises two axial flow pumps connected in parallel, connecting pipes, a spray pipe and a nozzle. Pump bodies of the two axial flow pumps are arranged with the center lines leaning to the vertical direction, a base is fixed to a frame of a trencher body, outlets are respectively connected with the spray pipe through the connecting pipes, and the tail end of the spray pipe is connected with the nozzle; the connecting pipes comprise a main pipe and two flow dividing pipes, wherein two water inlets of the main pipe are connected with the outlets of the two axial flow pumps respectively, a water outlet in the middle of the main pipe is vertically downwards connected with the spray pipe, two flow dividing water outlets are formed in the portion, located on the two sides of the spray pipe, of the middle of the main pipe and connected with water inlets of a jet propulsion and position control system of the trencher through the two flow dividing pipes respectively. The large-flow partition-plate-type spraying and flushing device of the deepwater trencher can efficiently achieve seabed trenching operation and form smooth conformation with the enough depth.