Seawater sediment pore water sampling device

Abstract

The invention provides a seawater sediment pore water sampling device. According to the seawater sediment pore water sampling device provided by the invention, sampling of deep-sea sediment pore watercan be effectively realized, a sampling pipe requires not to return an initial position after sampling is completed, sample recycling can be realized by directly lifting up the seawater sediment porewater sampling device, samples are enabled not to be polluted during recycling of the seawater sediment pore water sampling device, and the sampling operation is simplified. The technical scheme is characterized in that the seawater sediment pore water sampling device comprises an outer sleeve, an isolation sleeve and a sampling pipe assembly, wherein two ends of the sampling pipe assembly are sealed; through holes are formed in the side wall of the sampling pipe assembly; first one-way valves are arranged in the through holes; the first one-way valves are capable of enabling a sample outsidethe sampling pipe assembly to enter the inner part of the sampling pipe assembly; the isolation sleeve is arranged outside the sampling pipe assembly in a sleeving way; the outer sleeve is arranged outside the isolation sleeve in the sleeving way; the sampling pipe assembly and the isolation sleeve as well as the isolation sleeve and the outer sleeve can be in coaxial relative movement; an annular boss is arranged on the inner wall of the outer sleeve; the inner wall of the annular boss is fitted with the outer wall of the isolation sleeve; a limiting device is arranged on the outer wall of the isolation sleeve and is used for limiting the annular boss.

Description

technical field [0001] The invention relates to the technical field of seawater sampling equipment, in particular to a seawater sediment pore water sampler. Background technique [0002] As an important component of soil or sediment, sediment pore water participates in the material cycle process inside soil or sediment, such as the migration of soluble substances, dissolution of minerals, mineralization, nitrification and denitrification, etc. The study of pore water It plays an important role in the study of soil or sediment. Traditional pore water samplers are mainly used on land. Seabed sediment pore water samplers have higher technical requirements, and there are few mature products. Even if the structure is relatively complicated, it is not easy to use. convenient. Contents of the invention [0003] The invention provides a new type of underwater sampler, which can effectively realize the sampling of deep-sea sediment pore water. After the sampling is completed, the ...

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Problems solved by technology

[0002] As an important component of soil or sediment, sediment pore water participates in the material cycle process inside soil or sediment, such as the migration of soluble substances, dissolution of minerals, mineralization, nitrification and denitrification, etc. The study of pore water It plays an important role in the study of soil or sediment. Traditional pore water samplers are mainly used on land. Seabed sediment pore water samplers have higher technical requirements, and there are few mature products. Even if the structure is relatively complicated, it is not easy to use. convenient

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