Water spraying type device for removing submerged plants

The invention belongs to the field of environmental engineering and environmental ecology, and particularly relates to a simple device for removing submerged plants in bottom sediments of a shallow lake by utilizing water pressure. The simple device comprises four main parts, i.e., a suctioning device, a water spraying device, a collecting device and a fixed device, and can be arranged on any ship body. When a self-sucking pump works, lake water is sucked by a filter net, enters a water suctioning pipe, and then enters a water guiding pipe after flowing through a connecting pipe, a fixed rod and a connecting arm. A pressurized water column is sprayed out along a spraying nozzle to wash the bottom sediments of a surface layer, so that the submerged plants are washed out of a bottom-sediment layer and are collected by a collecting net. The simple device is not limited by the areas of the ship body and a water body, is economic and high-efficiency, can remove the submerged plants completely and is convenient for promotion.