Water sampling device

The water sample collection device comprises a traction rope, a collection box body and a lead block, one end of the traction rope is connected to the center position of the top of the collection box body; the collecting box body is of a cubic structure, side doors sliding upwards are arranged on the left side and the right side of the collecting box body respectively, and a lead block is arranged at the bottom of the collecting box body; a lifting rope facilitating lifting is arranged in the center of the top of each side door. According to the water sampling device, the vertical movement of the side door plate is controlled by utilizing the buoyancy of the inflatable rubber ball and the length of the lifting rope, so that the opening and closing states of the corresponding cavities of the water sampling tank are controlled, the operation of sampling multiple layers of water is further realized, and the portability of the water sampling device is improved. 水样采集装置，包括牵引绳、采集箱体以及铅块；所述牵引绳的一端连接于所述采集箱体的顶部中心位置；所述采集箱