The utility model provides a
water quality sampling
bottle self-replacing device, which relates to the technical field of
water quality sampling and comprises an unmanned aerial vehicle, a sampling device main body fixed at the bottom of the unmanned aerial vehicle, a sampling
bottle body arranged on the inner wall of the sampling device main body, a sampling pump fixed on the surface of the sampling device main body, and a
water sampling pipe fixed at one end of the sampling pump, one end of the water inlet
pipe is provided with an
electromagnetic valve body, the inner wall of the sampling device main body is rotatably connected with a bottom
rotating disc, the bottom
rotating disc is driven by a driving motor, and the top of the bottom
rotating disc is provided with a plurality of sampling
bottle bodies. According to the utility model, the plurality of sampling bottle bodies connected with the water inlet
pipe through the
electromagnetic valve bodies are arranged in the sampling device main body, and the positions of the sampling bottle bodies in the sampling device main body can be changed through rotation of the bottom rotating disc, so that the unmanned aerial vehicle can carry out sampling for multiple times during single flight, continuous
water quality sampling is realized, and the sampling efficiency is improved. The sampling cost is reduced, and the sampling application range of the unmanned aerial vehicle is widened.