Water quality monitoring device

The water quality monitoring device comprises a water quality monitor body, a floating disc and a collision plate, the center of the floating disc is connected with the water quality monitor body in a sleeved mode, a plurality of installation cavities are evenly formed in the floating disc, buffer springs are installed in the installation cavities, the movable ends of the buffer springs are connected with connecting blocks, and the connecting blocks are connected with the collision plate. A sliding column is fixedly mounted on one side of the connecting block, a fixing hole is formed in one end of the side wall of the sliding column, a sliding sleeve is fixedly mounted on one side of the mounting cavity, the sliding column is sleeved with the sliding sleeve, a plurality of mounting holes are evenly formed in the side walls of the inner sides of the four collision plates, and second nuts are fixedly mounted on one sides of the mounting holes. And a mounting screw rod is mounted in the second nut in an engaged