Improved hydrological height-adjustable sediment collection device

The utility model relates to the technical field of hydrological scientific research tools. The improved hydrological height-adjustable sediment collecting device comprises a machine body, a fixed block is fixedly connected to the top of the machine body, the top of the fixed block is movably connected with a connecting pipe through a movable shaft, a thread is arranged on the outer side of the connecting pipe, and a collecting device body is installed on the outer side of the connecting pipe in a screwed mode. The invention discloses an improved hydrological height-adjustable sediment collection device. After the first motor is started, the first gear is matched with the gear teeth; the first gear and the gear teeth are staggered to generate reverse movement, the reverse movement enablesthe movable pipe to rotate, and when the movable pipe rotates, a threaded groove in the movable pipe is matched with a thread on the outer side of the connecting pipe, so that the collecting device moves up and down on the ou