Grabbing superficial deposit sampler

Abstract

A dig-grap type surface deposition sampler, comprised of a sampling bucket, a supporting system, a lifting system and a lengthen system; the sampling bucket is a cavity composed of a prism and a pyramid, the pyramid is formed by triangular cone flanks, the cone flanks are connected with side walls of the prism via a revolving drum, a revolving shaft and a shaft support, capable of revolving around the shaft; the supporting system is composed of a supporting rod, a bush, a first extending plate, a pressure-bearing rod and an upright rod, providing supporting effect to the sampling bucket; the lifting system is composed of a coupling rod, a lifting plate, a lifting rod, a second extending plate and a revolving rod, capable of controlling opening and closing of the sampling bucket via the supporting system, the lengthening system is composed of a lengthening bush and a lengthening lifting rod, capable of lengthening the bush and the lifting rod simultaneously which enables the sampler to adapt different water depth. This sampler has excellent performance with simple structure, convenient operation, low costs and portability and maintenance.

Description

technical field [0001] The invention relates to the sediment collection technology of rivers, lakes, reservoirs and shallow seas in the field of environmental science, in particular to a pick-and-grab surface sediment sampler. Background technique [0002] Sediment is an important part of water bodies such as rivers, lakes, reservoirs, and oceans. It can exchange materials with the overlying water body through various channels such as precipitation-dissolution, adsorption-desorption, etc. Transformation and benthic organisms play an important role, so sediment monitoring is an important part of water environmental investigation and scientific research. Sediment sample collection is a necessary prerequisite for the realization of sediment monitoring. At present, the more commonly used surface sediment sampler is the clam sampler. The main characteristics and existing problems of this sampler are: 1) relying on artificial throwing and inserting the sampler into the sediment w...

AI Technical Summary

Problems solved by technology

At present, the more commonly used surface sediment sampler is the clam sampler. The main characteristics and existing problems of this sampler are: 1) relying on artificial throwing and inserting the sampler into the sediment with the help of the sampler's own weight, this sampling method will It makes it difficult to control the sampling depth and has a certain degree of blindness; 2) The opening and closing of the sampler is realized by rope traction and the weight of the sampler itself. Medium sample fall back

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