A fine soil sampling device

Abstract

The invention discloses a fine soil preparation device, which comprises a pressure rack (3) and an upper cross beam (4) mounted on the inner side of the pressure rack; the pressure rack (3) adopts a rectangular structure and is integrally defined by mutually welded section steels; a pressure oil cylinder (1) is fixed at the middle at the upper end of the pressure rack; the piston rod in the pressure oil cylinder (1) penetrates through the pressure rack (1) and the upper cross beam (4) and is connected with an upper pressure head (5) into a whole; a guide plate (2) parallel and level to the base plate of the pressure rack is mounted on one side at the bottom of the pressure rack (3); a guide trim strip (16) is mounted at the middle of the base plate of the pressure rack (3) in a mirroring manner; one end of the guide trim strip extends nearby the end part of the guide plate (2). The fine soil sample preparation device is applicable to collection of sandy soil, loam soil, clay, rice field soil and the like, has the advantages of equal quantity, rapid and easy operation when used for collecting soil samples; and besides, collected soil samples can be directly used in a laboratory after fine separation.

Description

technical field [0001] The invention relates to the field of test mechanical processing and manufacturing, in particular to a fine soil sample preparation device. Background technique [0002] Soil samples collected in the field must be prepared before the determination of soil physical and chemical properties in the laboratory. Soil sample collection is the basic work of the experiment, which is related to the results of the experiment. Now it is easy to ignore the link of sample collection. Errors in sample collection are often greater than errors in analytical detection. Because the sampling error is much larger than the analysis test error. Collecting representative soil samples is a prerequisite for the measurement results to faithfully reflect the objective conditions of the region they represent. Foreign agricultural scientific research and technology promotion institutions attach great importance to this, and have scientific and strict requirements for soil sampli...

AI Technical Summary

Problems solved by technology

It is difficult to achieve equal, convenient, fast and accurate collection of soil samples, and to control sampling errors to the greatest extent

At present, the sampler for soil testing and formula fertilization is the most used, T-shaped hard soil sampler and in-line thin mud sampler. For the T-shaped sampler, when the soil is too dry, there may be fine soil particles during rotation. It is not good for sampling, the soil is too sticky, it will stick in the sampler

And the soil samples collected by existing methods need to go through six processes of air-drying, sorting, picking, grinding, sieving, bottling and preservation before they can be analyzed and determined in the laboratory.

Cannot be measured as it is, resulting in increased measurement error

Images