Special sieve for soil sample preparation

Abstract

The invention discloses a special sieve for sampling soil. The sieve is characterized in that the top part of a sieve cover is closed, wherein inner threads are formed in the inner wall of the edge ofthe cover; the upper part and the lower part of a sieve body are hollowed out; inner threads and outer threads are correspondingly formed in the inner wall and the outer wall of the upper part of thesieve body; inner threads are formed in the inner wall of the middle part of the sieve body; inner threads and outer threads are correspondingly formed in the inner wall and the outer wall of the lower part of the sieve body; outer threads are formed in the outer wall of a sieve net; an equi-index plate is divided into a plurality of sector column bodies; one of every two adjacent sector column bodies is hollowed out, and another one is provided with a bottom; outer threads are formed in the outer wall of the equi-index plate; the bottom part of a sample plate is closed, and threads are formed in the inner wall of the edge of the sample plate; the inner threads in the sieve cover are engaged with the outer threads in the upper part of the sieve body; the outer threads in the sieve net areconnected to the inner threads in the middle part of the sieve body; the outer threads in the equi-index plate are connected to the inner threads in the lower part of the sieve body; the outer threads in the lower part of the sieve body are engaged with the inner threads in the upper part of another sieve body or the inner threads in the sample plate; the inner threads in the upper part of the sieve body are engaged with the outer threads in the lower part of another sieve body. With the adoption of the sieve, the sampling process is simple, easy and quick; the air pollution can be reduced; the cross contamination of a sample is avoided; and the harm to human body is avoided.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring, in particular to a special sieve for soil sample preparation. Background technique [0002] When measuring soil samples, the analysis of different components requires samples of different particle sizes, that is, it is necessary to pass the ground soil through sieves of different apertures, and the process is to sieve step by step, and finally produce different particle sizes that meet the requirements of component determination. sample. At present, the sieves used for soil sample preparation are relatively inconvenient to use. When preparing soil samples, after the samples are ground, nylon sieves with different apertures are used in turn to sieve the samples. Half of them are regrinded or go directly to the next step of sieving until the smallest particle size sample is reached. This sample preparation process is complicated, and there are certain problems: [0003] 1. Due t...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problems and deficiencies existing in the prior art in the soil sample preparation process, such as complicated process, long time, air pollution, sample cross-contamination, and human injury, and provides a special sieve for soil sample preparation.

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