Clip type deposit sampler

Abstract

The invention relates to a clamping sediment sampler. A structure that a sampling tube is inserted in or separated from a sampling head is finished by matching a spring and an inclined clamping block which are arranged on the sampling head with the step plane of the outside diameter of the sampling tube. Due to the design that the inside diameter of the sampling tube is the same as the diameter of a spillway hole, and a valve cover can freely float up and down, the spillway hole is ensured to be automatically started and closed, and a water-soil interface is not disturbed when samples are collected. A plurality of connecting rods are used, are mutually spliced, and are fixed by a slide sleeve for being applicable to different water depths, and the strike of a movable heavy hammer can collect deeper sediment samples.

Description

Technical field [0001] The invention relates to an underwater sediment sampling tool for water environment research, in particular to a cassette type sediment sampling device, belonging to the field of machinery. Background technique [0002] Underwater sediments are important samples for studying the laws of climate and environmental changes. They contain a large amount of environmental and climate information. How to collect sediments completely from underwater for physical, chemical and biological analysis requires water -It is very important that there is no disturbance between the soil interface and the layer of sediment. In order to be able to determine the sediment age sequence, it is necessary to collect sediments over a hundred years old. Generally, the sedimentation rate of sediments in water is a few millimeters per year, and sediments above 50cm must be collected. Therefore, the deeper the sediment, the better. . The collection of sediments is generally carried out in...

AI Technical Summary

Problems solved by technology

The clam-type sampler will destroy the surface sediment and sequence structure of the water body, while the columnar sampler (ZL00234831.4), the area of ​​the through hole on the sampling head cannot be equal to the area of ​​the sampling tube due to structural reasons, so it will still produce Disturbance at the water-soil interface; the connecting rod and sampling pipe of the sampler used in shallow water are connected by threads, and cannot be forced to rotate in the opposite direction to the thread during the sampling process, otherwise the thread is easy to loosen or even fall off. The top of the sampling tube is not sealed and the use of threaded connection is still not convenient and fast enough, and its design can only be used in shallow water, not in deep water

There is also a columnar sampler (ZL01245551.2,) the sampling head relies on the float valve in the valve and the overflow hole in the sampling rod to overflow the water in the sampling pipe, the area of ​​the through hole is smaller than the area of ​​the sampling pipe, and it will produce water— Disturbance at the soil interface

Secondly, the sampling tube is sealed and fixed by a radial rubber ring. After the sampling tube in water is filled with sediment, the sampling tube is very heavy and easily slips off; It can rely on its own gravity to press down, and cannot mine deep sediments

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