Soil pore air water acquiring device

Abstract

The invention relates to the technical field of collecting and measuring the moisture content of the pore air in a plurality of surface types of soil, and discloses a soil pore air water acquiring device, comprising a first acquiring probe, a second acquiring probe, a first switching component, a water collector, an air sucking pump, an air supply pump, a dryer, a mast and a sealing cover having an opening, wherein the two acquiring probes are disposed in the mast; the first acquiring probe comprises a first outlet and a first inlet; the second acquiring probe includes a second inlet, a secondoutlet, and a third outlet; the first switching component controls the second outlet or the third outlet to be separately connected to the second inlet; the mast is inserted into the sealing cover; the dryer is connected to the second inlet and the air supply pump; the water collector is connected to the first outlet and the air sucking pump; the first inlet and the second outlet penetrate through the mast and are located inside the sealing cover; and the third outlet penetrates through the top of the mast. The soil pore air water acquiring device of the invention is convenient to be used inwild cold or dry environment.

Description

Technical field [0001] The present invention relates to the technical field of collecting and measuring the moisture content of pore air in multi-surface type soils, in particular to a soil pore air moisture collection device. Background technique [0002] The soil is a porous multi-phase (solid, liquid, and gas three-phase) loose surface layer developed on the basis of rock weathering and Quaternary sediments. It has certain fertility (water, fertilizer, gas, heat) and can grow plants. The infiltration process of water in the soil is actually a process in which the two fluid states of water and gas are replaced with each other. [0003] The movement of gaseous water in the soil is manifested in two phenomena: water vapor diffusion (evaporation) and water vapor condensation. In nature, evaporation and condensation are the reverse processes of each other, and the condensation process and the evaporation process often undergo frequent transformations. To determine whether water vap...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a soil pore air water content collection device, which can improve the collection of soil pore air and the problems of inconvenient measurement of water content and unstable detection results in the prior art

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