Pipeline centrifugal pump

The utility model discloses a pipeline centrifugal pump which comprises a hollow base, three L-shaped supporting rods are arranged on the outer wall of the hollow base, a mounting base is arranged at the bottom ends of the L-shaped supporting rods, a centrifugal pump body is arranged in the middle of the top end of the hollow base, and a water inlet connector is arranged on one side of the top end of the hollow base. A water outlet connector is arranged on the other side of the top end of the hollow base, a rotating disc movably connected with the hollow base is arranged in the center of the bottom end of the hollow base, a threaded shaft movably connected with the rotating disc is arranged on the side wall of the rotating disc, the threaded shaft is sleeved with a pair of sliding blocks, and a locking block is arranged at the top end of each sliding block. The pipeline centrifugal pump has the beneficial effects that the filtering cover is installed in the hollow base, the situation that an impeller rotating