Rake desilting device

The invention discloses a rake desilting device and relates to the technical field of underwater desilting. A mounting plate is connected with a ship body through a mechanical arm, two rakes are both arranged on the front side of the mounting plate, a first supporting plate is arranged on the mounting plate, a plurality of first water jet cutters are movably connected to the first supporting plate, a second supporting plate is arranged on the mounting plate, and a plurality of second water jet cutters are movably connected to the second supporting plate. A plurality of second water jet cutters are rotationally connected to the second supporting plate, the two side sliding rails are fixedly connected to the mounting plate in an inverted splayed shape, the two ends of the upper sliding rod are in rolling connection and sliding connection with the two side sliding rails in a one-to-one correspondence mode, one ends of the multiple first telescopic rods are movably connected to the upper sliding rod, and the othe