Low-disturbance deep-water sediment sampling device

Abstract

The invention discloses a low-disturbance deep-water sediment sampling device, belonging to the technical field of water quality sampling equipment, including a sampling bucket, a one-way sealing valve, a top cylinder, a sealing plate, a connecting rod and a flange plate; the bottom of the sampling bucket is provided with the one-way sealing valve, the top of the sampling bucket is detachably connected with the top cylinder, the top cylinder is slidably connected with the sealing plate inside, the sealing plate is fixedly connected with the connecting rod penetrating through the top cylinder, and the flange plate at the top end of the connecting rod is used for connecting an underwater vehicle; the sealing plate is provided with water leakage holes, the side surface of the top cylinder is provided with water discharge holes, the side surface of the sealing plate is fixedly connected with a plug, and the plug slides with the sealing plate to realize the blocking or conduction of the water discharge holes. The invention reduces the disturbance of water flow and sediment during sampling through a dynamic sealing-on / off mechanism, the one-way sealing valve prevents sample leakage and dilution, the detachable top cylinder facilitates sample taking, adapts to the deep-water environment, may ensure the original bedding and composition of sediment, and provides reliable samples for subsequent detection.

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