A low-disturbance sampling device for gravity-type deep-water sludge

Abstract

The invention discloses a gravity type deepwater silt low-disturbance sampling device. A gravity block is mounted at the bottom of a gravity type frame; hanging rings are connected to sampling steel tubes and together with the sampling steel tubes are fixed at a middle position of the gravity type frame; the sampling steel tubes are each provided with a plurality of sampling liner tubes; connection sleeves are each connected with each two sampling steel tubes, and are sealed by sealing strips; the bottom of the sampling steel tubes is connected with a cavity body; the cavity body is internal provided with a sampling bottom-sealing device; a bevel angle steel tube is fixedly connected with the sampling steel tubes through reinforcing steel bars; a sealed steel blade is jacked by a resisting sleeve; the resisting sleeve is stabilized by a rotating rod; the rotating rod is stabilized by tensile force of a rotating rod spring; a fine steel wire passes through a hosepipe and is connected with the rotating rod; a blade spring causes the sealing steel blade to undercut to seal the sampling steel tubes. The gravity type deepwater silt low-disturbance sampling device has the advantages of simple structure, stable impact and high sampling success rate, is slowly put into silt with supplement of an underwater camera system, triggers the sampling bottom-sealing device in a low-disturbance mode, and solves the problems that a conventional gravity type sampler has poor sealing performance, easy disturbance, complex structure and low sampling success rate.

Description

technical field [0001] The invention belongs to the technical field of deep-water mud research, and in particular relates to a low-disturbance sampling device for gravity-type deep-water mud. Background technique [0002] At present, sampling of seabed, lake bottom and reservoir bottom silt has always been a necessary survey method in the field of dredging engineering and silting research, especially the sampling process of deep water silt has always been an important part of this survey field. At present, obtaining lake, reservoir The samplers for shallow mud in other waters mainly include sampling tools such as grab bucket, box type, and gravity type. The gravity type mud sampler is currently the most commonly used mud sampling tool because of its simple structure, convenient operation, and low sampling cost. , the conventional gravity sludge sampler uses the weight of the weighted block and the weight of the sludge sampler to rush into the sludge in a free-fall manner to ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-disturbance gravity sampling device for deep-water sludge, which aims to solve the problem that the existing sludge sampler has a complex structure and the samples obtained are prone to disturbance

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