Soil sampling device settable in depth

Abstract

The invention relates to a soil sampling device settable in depth. The problems can be effectively solved that existing devices are inaccurate in sampling, complicated in operation and low in samplingefficiency. The soil sampling device is characterized by comprising a vertical rod, an outer barrel is arranged on the vertical rod, a shell body is arranged in the outer barrel, a first torsion spring is arranged between the shell body and the vertical rod, a feeding port is formed in the shell body, a second sleeve and a third sleeve are arranged on the vertical rod, a protrusive block is hinged to the third sleeve, and a casing pipe is arranged on the vertical rod; when the protrusive block is positioned in the feeding port and seals a cavity of the shell body, the first torsion spring cannot drive the shell body to rotate; when the casing pipe moves upwards to the top, the cavity of the shell body is opened; after the shell body moves downwards, the shell body rotates, the third sleeve moves downwards after the second sleeve rotates, the casing pipe is positioned at the lowest end, and the cavity of the shell body is sealed again. The soil sampling device can achieve sampling of asoil specimen at a certain position under the ground without contamination of soil specimens of other deep layers.

Description

technical field [0001] The invention relates to the field of environmental monitoring, in particular to a depth-determinable soil sampling device. Background technique [0002] The earth taker is used to lift the undisturbed soil of the lower layer of the test soil as a sample to understand its properties. In order to better understand the nature of the base, sometimes the original soil sample is taken at a deeper level. It is called a soil extractor. However, most of the traditional soil extractors are simple in structure and laborious to use, and the traditional soil extractors are not accurate enough to collect soil samples, which makes it difficult to meet people's needs. In addition, when it is necessary to collect deep soil samples, manual excavation It is too labor-intensive to dig a certain depth for sampling, so there is an urgent need for a depth-determinable soil sampling device to solve the problems of inaccurate sampling, complicated operation, low sampling eff...

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Problems solved by technology

[0003] In view of the above situation, in order to solve the problems existing in the prior art, the purpose of the present invention is to provide a soil sampling device with a fixed depth, which solves the problems of inaccurate sampling, complicated operation and low sampling efficiency of the existing devices.

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