Sampling device for monitoring water quality

The invention discloses a sampling device for monitoring water quality. The sampling device comprises a device main body, two fixing frames are transversely arranged in the middle of the top part of the device main body, lifting handles are arranged at the top parts of the two fixing frames, a filter screen is arranged at the upper part of the outer surface of the device main body, a transparent window is arranged on the outer surface of the device main body, a first clamping cushion is arranged on one side of the device main body, a rotating shaft is arranged on one side of the first clampingcushion, a clamping groove is connected on one side of the rotating shaft, a gravity block is connected on one side of the bottom part of the device main body through a movable shaft, a bottom cushion is connected with the bottom part of the gravity block, a second clamping cushion is arranged on one side of the gravity block, a plurality of through holes arranged in the bottom cushion at the bottom part of the gravity b