Portable earth surface shallow sampler

Abstract

The invention discloses a portable earth surface shallow sampler. The portable earth surface shallow sampler comprises a vibrating body, a power head casing and a driving motor, wherein a thread-changing joint is fixedly connected below the vibrating body; a drill rod is connected with the thread-changing joint; a hole is formed on one end face of the power head casing; the diameter of the hole on the end face of the power head casing is greater than the outside diameter of the driving motor; the driving motor is connected with an eccentric shaft through the hole on the end face of the power head casing; the two ends of the eccentric shaft are supported in the vibrating body by bearings; the driving motor is fixed together with the vibrating body; the power head casing is arranged outside the vibrating body; a hole is formed on the lower surface of the power head casing; the diameter of the hole is greater than the outside diameter of the thread-changing joint; and the vibrating body is connected with the power head casing in a suspended mode. The portable earth surface shallow sampler has a simple structure and high moving performance and is particularly suitable for sampling in environments with dense population, narrow space and shallow soil, and the obtained sample has no disturbance and has high fidelity and high sampling efficiency.

Description

technical field [0001] The invention relates to the field of sampling, in particular to a portable surface shallow layer sampler. Background technique [0002] In the prior art, the sampling method often adopts manual excavation at pollution detection points, which is inefficient, expensive, and destroys the distribution of pollution in depth; or adopts the method of rotary drilling combined with mud circulation. On the one hand, the heat of the core bit is cooled to prevent the drill from burning. On the other hand, the viscosity of the mud is used to protect the well wall and prevent collapse. However, the chemical composition of the mud often disturbs the sample greatly. Traditional drilling environment sampling methods and equipment are generally driven by hydraulic pressure, which requires a bulky hydraulic power source with high noise and poor mobility. The high cost and the above shortcomings make it difficult for traditional sampling methods to adapt to the requirem...

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Problems solved by technology

[0002] In the prior art, the sampling method often adopts manual excavation at pollution detection points, which is inefficient, expensive, and destroys the distribution of pollution in depth; or adopts the method of rotary drilling combined with mud circulation. On the one hand, it cools the heat of the core bit to prevent drilling, and on the other hand, it uses the viscosity of the mud to protect the well wall and prevent collapse. However, the chemical composition of the mud often disturbs the sample greatly.

Traditional drilling environment sampling methods and equipment are generally driven by hydraulic pressure, which requires a bulky hydraulic power source with high noise and poor mobility. High cost, the above shortcomings make it difficult for traditional sampling methods to adapt to the requirements of modern environmental sampling

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