Soil sampling device

Abstract

The invention provides a soil sampling device. The soil sampling device comprises an outer pipe, wherein a hollow sampling head is arranged at the lower part of the outer pipe; the sampling head is provided with a peripheral side wall for forming a hollow inner cavity; the sampling head is provided with a sampling hole communicated with the hollow inner cavity; an inner rod which can move back and forth in an up-down direction is arranged in the outer pipe; the inner rod is provided with a blocking structure for correspondingly opening and blocking the sampling hole when the inner rod moves up and down; the sampling hole is formed in the peripheral side wall; the sampling hole is provided with an inner hole which extends to an inner wall surface toward the hollow inner cavity of the peripheral side wall; the inner hole is higher than the bottom of the hollow inner cavity in the up-down direction; and the blocking structure is located in the hollow inner cavity and is used for opening and blocking the sampling hole through controlling the opening and closing of the inner hole when the inner rod moves up and down. Soil entering the hollow inner cavity falls into the bottom of the hollow inner cavity, and the soil is not pushed out of the hollow inner cavity by the blocking structure on the inner rod, so that the sampling success rate is improved.

Description

technical field [0001] The present invention relates to a soil sampler. Background technique [0002] The texture and composition of the soil have an important impact on agriculture, industry and other fields, so it is necessary to sample and analyze the soil, which requires the use of a soil sampler. Conventional soil samplers take cylindrical samples through sampling tubes, so that soil layers can be analyzed. However, this conventional soil sampler collects all soil layers. On the one hand, due to the bonding force between the various soil layers, it requires a large pressure to insert the sampling tube into the soil, which is very laborious. On the other hand, it cannot be individually sampled Soil at depth, sampling efficiency is low. [0003] A soil sampler is disclosed in the Chinese utility model patent with the authorization announcement number CN203606178U, which includes an outer tube and an inner rod movably assembled in the outer tube along the up-down dir...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a soil sampler to solve the problem that the sampling port on the sampling head of the soil sampler in the prior art is arranged at the bottom of the

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