River deposit columnar sampling device

Abstract

The invention relates to a river deposit columnar sampling device. The river deposit columnar sampling device consists of a force-applying handle, a connecting rod, a top cover, a gland, a hinge, a sampling outer pipe, a sampling inner pipe, a sampling cutter, screws and a sealing device, wherein an elliptic connecting hole on the force-applying handle is sleeved at an elliptic solid end at one end of the connecting rod and is fixed by the screws; the other end of the connecting rod is connected with the top cover through a threaded connection hole; the top cover is fixedly connected with the sampling outer pipe; the sampling inner pipe is arranged inside the sampling outer pipe; the sampling cutter is connected with an internal thread arranged on the inner wall of the sampling outer pipe through an external thread arranged on the sampling cutter; the sealing device is arranged between the gland and a water outlet in the top cover; and the gland is arranged on the top cover through the hinge. The river deposit columnar sampling device has a simple structure, is easy to operate, is convenient to carry, realizes batch sampling by directly replacing the sampling inner pipe, has high sampling efficiency, is suitable for field operation, and has relatively high practical value and wide application prospects in the technical field of ecological environment protection.

Description

technical field [0001] The invention relates to a water body sediment sampling device, in particular to a columnar river sediment sampling device, which belongs to the technical field of ecological environment protection. Background technique [0002] Sediment is an important part of water bodies such as lakes and rivers. It can exchange substances with the overlying water body through various channels such as precipitation-dissolution, adsorption-desorption, etc., which has an important impact on the migration and transformation of pollutants in the water body. Therefore, sediment As the main device for collecting sediment, the sampler is widely used in environmental and ecological research. [0003] At present, sediment samplers are mainly divided into two categories: grab type and column type. For example, the application number is 200810153883.4, and the name is a pick-and-grab surface sediment sampler. The publication number is CN101451927A. The opening / closing state o...

AI Technical Summary

Problems solved by technology

[0006] To sum up, most of the current columnar samplers use single-layer sampling tubes, and some patents use the structure of sampling inner tubes and sampling outer tubes. Most of the sampling inner tubes are seamless cylindrical tubes for storing collected samples. For columnar samples, the sample needs to be taken out of the sample column before testing, which is easy to damage the sample and difficult to operate

In order not to destroy the sample, the sampling column had to be destroyed, resulting in a waste of resources and undoubtedly increasing the cost of scientific research

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