Multifunctional depth-setting water level water quality sampling device

The invention discloses a multifunctional depth-setting water level water quality sampling device. The sampling device comprises a horizontal telescopic pole, wherein the horizontal telescopic pole is fixed to a tripod on the shore; a sampling disc including a cover is hung on the front end of the horizontal telescopic pole through connecting lines; the sampling disc with the cover comprises a top cover and a disc body; connecting line through holes and liquid feeding needle through holes are formed in the top cover; a liquid feeding needle passes through the liquid feeding needle through holes so that sampling and liquid feeding are controlled under the driving of a liquid feeding needle motor; a water quality parameter measuring device is arranged outside the top cover; the disc body comprises a chamber which can accommodate a plurality of sampling bottles; the sampling bottles are respectively arranged on a rotating platform with multiple grooves; the rotating platform is driven by a bottom rotating motor so that the sampling bottles respectively rotate below the liquid feeding needle for sampling; the liquid feeding needle motor, the water quality parameter measuring device and the rotating motor are respectively connected with a controller. The sampling device is characterized in that the water quality parameter under the depth is measured by the water quality parameter measuring device after the sampling disc reaches a preset sampling depth, and the sampling bottles respectively execute continuous sampling, and thus the sampling device is simple to operate and convenient to use.