Cylindrical shallow layer sediment sampler

Abstract

The invention belongs to the field of environmental engineering, environmental science, bioengineering, and water supply and drainage science and engineering, and relates to a cylindrical shallow layer sediment sampler, which comprises a sediment sampling device and a sediment sample cutting packaging device sleeved inside the sediment sampling device, wherein the sediment sampling device comprises a lower handle, an outer bush, a guider and a sampling head, the lower handle, the outer bush, the guider and the sampling head are sequentially connected, the sediment sample cutting packaging device comprises an upper handle, an inner drive rod and a rolling sphere, the upper handle, the inner drive rod and the rolling sphere are sequentially connected, the inner drive rod and a fixation nut arranged on an inner hole of the outer bush form a matched threaded connection, downward movements of the inner drive rod and the rolling sphere drive an upper drive block, a lower drive block, an inner bush, a barrier block and a cutting cutter head to move down, the lower portion of the cutting cutter head gradually invert inward and encloses with position limitation of the guider, and the upper handle is positioned on the upper end surface of the sediment sampling device. The cylindrical shallow layer sediment sampler has the following advantages that: characteristics of labor saving, convenience and high efficiency are provided during sampling, the sampled sample is complete, and the sampler can be adopted as a sampling device for sediment and sediments.

Description

Technical field [0001] The invention belongs to the fields of environmental engineering, environmental science, biological engineering, water supply and drainage science and engineering, and is a kind of sediment and sediment used in rivers, lakes, reservoirs and shallow sea areas for water environment detection, geochemistry and hydrology and hydraulic analysis Sampling device. Background technique [0002] The selection of sediment sampler generally requires simple and quick sampling; minimize the compression of the sample during the operation, and preserve the original thickness and layered structure of the sediment; the sampler can be quickly cleaned and cleaned; the sample remains basically intact. There are many types of sediment samplers. Depending on the depth of the water body at the time of sampling, and the nature and composition of the sediment, different types of sediment samplers need to be used. It mainly includes cone samplers, drill bit samplers, and pendant sam...

AI Technical Summary

Problems solved by technology

However, the bottom of the manual sediment sampler is generally made into a blade shape, which is laborious

In addition, it is worth noting that sediment sampling is different from soil sampling. The water content of sediment is generally high and its physical properties are special. At the same time, the sampler lacks the corresponding intercepted and truncated columnar sediment samples and relies on the samples to break by themselves. In the actual sampling process, the sediment samples are easy to fall off, easy to be compressed, the sample fracture position is uncertain, and the original properties of the sediment are destroyed, which reduces the efficiency of sediment sampling and affects subsequent testing and research work

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