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Simple surface deposit sampler

A technology of surface sediments and collectors, applied in the direction of sampling devices, etc., can solve the problems of long collection time, cumbersome, complicated operation process, etc., and achieve the effect of strong practicability, good collection and convenient operation

Inactive Publication Date: 2007-02-28
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is also a spring mud picker, which mainly relies on the action of springs to insert the left and right jaws into the sediment for sampling, and its operation process is complicated and cumbersome
In the process of collecting surface sediments in coastal waters or rivers, due to the influence of tidal currents or the limitation of bottom conditions, grab dredgers often close by themselves, and no samples can be collected or repeated collections will cost a long time. time
If a heavier dredger or spring dredger is used, it is often limited by the conditions of the survey vessel, which brings a lot of operational inconvenience to the offshore survey work

Method used

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Embodiment Construction

[0007] The main body of the simple surface sediment collector is barrel-shaped, made of steel pipe 1 with a diameter of 250 mm and a thickness of 5 mm. The perimeter is equally divided and bent outward at 30 degrees to form a plow-shaped petal 2, which is used to increase the ability of the collector to grab and dig sediment; the drain hole 3 is preferably located on the barrel body more than 100mm away from the bottom of the barrel, and the drain hole The hole diameter gradually increases from bottom to top, and the hole diameter of the drain hole can be 5mm, 7mm, 9mm, and 12mm from bottom to top, which is convenient to discharge the seawater that enters the bucket with the surface sediment and facilitates the collection of sediment; A movable lifting ring 4 made of wire steel with a diameter of 5mm is installed at the mouth, and the movable lifting ring 4 has a triangular buckle. In addition, a weighted fixing hole with a diameter of 7mm is drilled near the mouth of the buck...

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Abstract

The invention relates to a surface deposit collector of seabed, wherein it has simple operation and high sample success rate; and it is formed by main body of collector and extracting ring; the invention is characterized in that: the main body of collector is barrel; the barrel open has outward-incline plow-shaped valve; the barrel has discharge hole; and the barrel open is mounted with movable extracting ring.

Description

Technical field: [0001] The invention relates to a surface sediment collection device used in marine ecological environment investigation. Background technique [0002] At present, grab dredgers are commonly used in surface sediment collection in domestic marine ecological environment surveys. This kind of mud extractor is mainly composed of two movable jaws. The opening area of ​​the two jaw flaps is 0.1m 2 . The tops of the two jaws are connected by an iron chain. When the iron chain is hung on the hook at the end of the wire rope, the two jaws are in an open state. When the dredger touches the seabed, the iron chain is unhooked. When the dredger is lifted up, the wire rope connecting the two jaws is tightened, so that the two jaws are closed, and the sediment is grabbed into the grab bucket. In addition, there is also a spring mud picker. This kind of mud picker mainly relies on the action of springs to insert the left and right jaws into the sediment for sampling, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/12
Inventor 王云龙沈新强朱江兴
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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