Device for sampling column shape samples of shallow water deposit

A sampling device and sediment technology, applied in the direction of sampling device, etc., can solve the problems of easy loss of sediment, poor sealing performance, poor sample representativeness, etc., and achieve the effects of good sampling effect, easy operation and compact structure

Inactive Publication Date: 2008-07-16
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
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Problems solved by technology

Due to the poor sealing performance of the traditional digging sampler, the sediment is easily lost during the sampling process, and the representativeness of the sample is poor, so it is impossible to collect the original sediment columnar sample
In shallow lakes and rivers, the sampling depth of the columnar sampler that cuts down by its own weight is limited by the downward force, and can only collect sediment samples of a limited depth. Due to the complicated operation of this type of sampler, it is not suitable for large-scale sampling activities

Method used

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  • Device for sampling column shape samples of shallow water deposit

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0014] Referring to Fig. 1, a shallow-water sediment sampling device is composed of a sampling tube assembly, a booster assembly and a connector assembly arranged between the sampling tube assembly and the booster assembly, and the sampling tube assembly is protected by a plexiglass sampling tube 9 and stainless steel The sleeve 11 and the fixing bolt 10 are composed; the connecting head assembly is composed of the connecting piece 7, the lower flange 8, the rubber O-ring seal, the one-way valve 6, the connecting bolt 5 and the connecting head; Force handle 2, pressure regulating plug 1 are formed.

[0015] Sampling tube 9 is a standard plexiglass tube, and PVC tube or metal tube can also be used. The plexiglass tube is convenient for observing the collected samples, and it is durable. The botto...

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Abstract

The invention discloses a sampling device for a column-shaped sample of shallow water sediment which includes a sampling tube component, a stress application component and a connector component arranged between the sampling tube component and the stress application component; the sampling tube component includes a sampling tube; the connector component includes a lower flange and a connecting piece connected by a bolt, a sealing piece arranged between the lower flange and the connecting piece, a connector connected on the connecting piece and a holding valve arranged in the connector and the connecting piece; the stress application component includes a plurality of hollow connecting rods connected on the connector and the top parts of the connecting rods are provided with ventilating screwed plug; the sampling tube passes through the lower flange and a lock ring, extents into the connecting piece and is fixedly connected on the lower part of the connecting component through a bolt. By adopting the invention, the initial state of the column-shaped sample of the shallow water sediment can be maintained and good sampling effect is obtained. The invention has the advantages of compact structure, easy carry, convenient operation and being able to adapt various field sampling conditions.

Description

technical field [0001] The invention relates to a sampling device, in particular to a sampling device for sediment columnar samples in shallow lakes and rivers used for scientific research and protection of water environment. Background technique [0002] Sediment monitoring and quality assessment of lakes and rivers is an important part of scientific research and protection of water environment, and high-quality sediment sampling technology is the premise and basis of the work. Due to the poor sealing performance of the traditional digging sampler, the sediment is easily lost during the sampling process, and the representativeness of the sample is poor, so it is impossible to collect the original sediment columnar sample. In shallow lakes and rivers, the sampling depth of the columnar sampler that cuts down by its own weight is limited by the downward force, and can only collect sediment samples of a limited depth. Due to the complicated operation of this type of sampler, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/08
Inventor 王雨春周怀东万晓红陆瑾刘晓波袁浩
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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