Suction dredger for inclined tube sedimentation tank

The utility model discloses a suction dredger for an inclined tube sedimentation tank, which comprises a movable rack, a sludge suction pipe is arranged below the rack, a plurality of sludge suction nozzles are arranged on the outer wall of the sludge suction pipe, one end of the sludge suction pipe is communicated with an inverted U-shaped sludge discharge pipe, and the other end of the sludge suction pipe is connected with the rack through a support frame; a water pump is arranged on one side of the sludge discharge pipe, the water pump is communicated with an inverted-U-shaped water pump pipe, a jet device is arranged on the water pump pipe, the sludge discharge pipe is communicated with a multi-way joint, one interface of the jet device is communicated with one interface of the multi-way joint through a connecting pipe, and the multi-way joint is communicated with a vacuum meter; and the free ends of the water pump pipe and the sludge discharge pipe are both lower than the liquid level of the sedimentatio