Sampling equipment for river and lake water quality detection

The utility model relates to the technical field of water quality detection, and discloses a sampling device for river and lake water quality detection, the sampling device comprises a floating plate, a hollow block is arranged below the floating plate, a sampling box is arranged below the hollow block, the sampling box and the hollow block are jointly provided with a winding lifting mechanism, a piston plate is slidably arranged in the sampling box, and the piston plate is arranged in the hollow block. A group of springs are jointly and fixedly arranged between the piston plate and the inner bottom of the sampling box, the piston plate and the sampling box are jointly provided with a jacking mechanism, a plurality of injection pipes are fixedly inserted into the end surface of the sampling box, and a first normally closed electromagnetic valve is arranged in each injection pipe. According to the sampling box, multi-point and multi-position water liquid sample storage can be completed at a time through multip