Multi-point sampling device for sediment on surface of seabed rock

The utility model discloses a multi-point sampling device for sediment on the surface of seabed rock. Comprising a mud suction cover, a guide pipe, an upper-end suction filtration butt joint cavity connecting rod, an upper-end suction filtration butt joint cavity, an upper-end oil cylinder, upper-end suction filtration butt joint cavity sealing rubber, a lower-end oil cylinder, a lower-end suction filtration butt joint cavity, a lower-end suction filtration butt joint cavity connecting rod, a centrifugal pump, a servo motor, an upper rotating disc, a fixing support, a double-end stud, a sampling bottle, a suction filtration bottle, a lower rotating disc and an ROV connecting base. The lower-end suction filtration butt joint cavity is provided with sealing rubber, permeable reticulated filter cloth, a sediment suction filtration sealing ring, a supporting plate and a drainage pipe. According to the device, a centrifugal pump suction method is adopted, micro-area field investigation and accurate sampling can be