A sampling device for soil leaching liquid

Abstract

The invention discloses a sampling device of a soil leaching solution, comprising a box, wherein a first cavity and a second cavity are formed in the box, a lifting plate is arranged in the first cavity, a container cup is arranged at the upper end of the lifting plate, a filter cup is in sliding connection to the inside of the container cup, a side door is in rotatable connection with the side wall of the filter cup, an inner shaft is in rotatable connection in the filter cup, an outer shaft sleeves the outer side wall of the inner shaft, a plurality of agitating rods are arranged on the outer side walls of the inner shaft and the outer shaft, and filter screens are arranged in the filter cup and located at the lower ends of the inner shaft and the outer shaft. According to the invention,the inner shaft and the outer shaft rotate reversely, so that the agitating rods can uniformly agitate soil and deionized water; by the reverse rotation of the agitating rods, the flow of the deionized water is more rapid, so that elements in the soil are dissolved in the deionized water after being rapidly separated from soil particles under the impact of water current, and extraction of the soil leaching solution is more sufficient.

Description

technical field [0001] The invention relates to the technical field of sampling soil leaching liquid, in particular to a sampling device for soil leaching liquid. Background technique [0002] Soil leaching solution refers to the liquid obtained by mixing fertile soil with deionized water and filtering it through a filter. The liquid often contains nutrients necessary for plant life, such as inorganic salts, nitrogen, phosphorus, potassium, etc. The prepared soil leaching solution can be used to cultivate seedlings and observe their growth status; the existing method of preparing soil leaching solution is generally to put the soil in a beaker and manually stir it with a glass rod. Stirring will easily lead to uneven mixing of soil and deionized water, and the dissolution of elements in the soil is not thorough enough, so that the extraction of soil leaching solution is not sufficient; and when using a filter to filter impurities, the ordinary filtration method only has one s...

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Problems solved by technology

[0002] Soil leaching solution refers to the liquid obtained by mixing fertile soil with deionized water and filtering it through a filter. The liquid often contains nutrients necessary for plant life, such as inorganic salts, nitrogen, phosphorus, potassium, etc. The prepared soil leaching solution can be used to cultivate seedlings and observe their growth status; the existing method of preparing soil leaching solution is generally to put the soil in a beaker and manually stir it with a glass rod. Stirring will easily lead to uneven mixing of soil and deionized water, and the dissolution of elements in the soil is not thorough enough, so that the extraction of soil leaching solution is not sufficient; and when using a filter to filter impurities, the ordinary filtration method only has one stage of filtration, that is, The agitation of soil and deionized water is poured on the filter screen with high precision, which will easily block the mesh holes of the filter screen with large impurities in the soil, thus affecting the filtering effect. Therefore, we propose a method of soil leaching solution sampling device

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