A polluted soil sampling device using piston principle

Abstract

The invention discloses a contaminated soil sampling device using a piston principle. The contaminated soil sampling device comprises a sampling pipe, a rotating threaded rod and an auxiliary transmission device, wherein a fixing plate is arranged on the auxiliary transmission device; a support leg is arranged at the left side of the fixing plate; a position limiting plate is fixed at the right side of the fixing plate; a threaded rod is inserted onto the position limiting plate in a penetrated way; a screw nut is arranged at a connecting position of the position limiting plate and a threadedconnecting rod in a matched way; the lower end of the threaded rod is fixedly provided with a half ring; a turntable is arranged at the right end of the rotating threaded rod; a rotating handle is arranged at the right side of the turntable; a hollow cavity is formed inside the rotating threaded rod; a push rod is inserted in the hollow cavity formed inside the rotating threaded rod in a penetrating way; an outlet pipe is arranged at each of the upper end and the lower end of the sampling pipe; a sampling sub pipe is inserted into the outlet pipe in a penetrating way; an extrusion rod is fixedat the bottom of the sampling sub pipe; the lower end of the extrusion rod is fixedly provided with a piston; the piston is inserted in a piston pipe in a penetrating way. The contaminated soil sampling device using the piston principle has the advantages that the sampling is convenient and fast; the deep positioning sampling is accurate and fast; the efficiency is high.

Description

Technical field [0001] The invention relates to a contaminated soil sampling device, in particular to a contaminated soil sampling device using the piston principle. Background technique [0002] Soil is an important part of the human environment and the basis of people's life and production. However, due to the rapid development of cities and industries in recent years, soil pollution has become one of the prominent environmental problems in our country. In particular, soil heavy metal pollution is the most serious, which mainly comes from the three wastes of industrial production such as mining and metal smelting, as well as the unreasonable application of sewage irrigation, pesticides, and fertilizers. Soil heavy metal pollution not only leads to soil degradation, reduction of crop yield and quality, but also heavy metals in the soil will be absorbed by plants, and when accumulated to a certain limit, they will be toxic to plants, and may directly or indirectly harm human heal...

AI Technical Summary

Problems solved by technology

Soil heavy metal pollution not only leads to soil degradation, reduction of crop yield and quality, but also heavy metals in the soil will be absorbed by plants, and if they accumulate to a certain limit, they will be poisonous to plants, and may directly or indirectly cause harm to human health through the food chain

[0003] In order to grasp the changes in soil composition in various regions in a timely manner, it plays an active and important role in preventing land pollution, protecting land resources, and controlling polluted soil. At present, the sampling depth cannot be accurately positioned and the sampling rate is low and the efficiency is slow.

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