River dredging and desilting device

The invention relates to the field of desilting, and discloses a river dredging and desilting device which is characterized in that an elastic block is fixedly connected to the top of a supporting block, a sliding block is fixedly connected to the end, away from the supporting block, of the elastic block, a rotating ring is fixedly connected to the top of the sliding block, and a sliding bin is slidably connected to the outer surface of the sliding block. The position of the sliding block in the sliding bin is changed, slope adjustment of the conveying assembly is achieved, it is guaranteed that sludge does not slide down in the conveying process, meanwhile, the size of an opening entering the collecting bin is increased, the feeding efficiency is guaranteed, and the situation that the sludge cannot pass through smoothly due to the fact that the opening is too small is avoided; sludge attached to the surface of the conveying assembly is cleaned through the scraper, the collecting quality is guaranteed, meanwh