Soil screening instrument for laboratory

Abstract

The invention discloses a soil screening instrument for a laboratory. The soil screening instrument comprises a screening device and a vibration device, wherein the screening device comprises a chassis, at least one sample separating screen and a top cover which are sequentially stacked together from bottom to top; each sample separating screen comprises a fixed frame and a screen mesh; two corresponding sides of each screen mesh are correspondingly and fixedly arranged at one third of the height of a first fixed plate of the corresponding fixed frame from bottom to top, and the other two corresponding sides of each screen mesh are correspondingly and fixedly arranged on the bottom edge of a second fixed plate of the corresponding fixed frame; the height of two sides, connected with the first fixed plate, of each screen mesh on the first fixed plate is higher than the height of the projection of the bottom of the screen mesh on the first fixed plate; and a discharge hole for taking outscreened articles is formed in the center of the bottom of the side surface of one second fixed plate. According to the soil screening instrument, the screened articles in the sample separating screens can be conveniently and easily taken out, and the purpose of reducing the residual articles on the sample separating screens is achieved. The soil screening instrument is suitable for being used during soil detection and analysis in the laboratory and is used for screening soil.

Description

technical field [0001] The invention belongs to the technical field of soil sieving, in particular to a laboratory soil sieving instrument. Background technique [0002] With the rapid development of industry, the random discharge of sewage and the random burial of solid waste have made the problem of soil pollution more and more serious. my country is also paying more and more attention to the problem of soil pollution, and soil testing activities in most areas are becoming more and more frequent. For soil testing in the prior art, laboratory testing personnel generally air-dry the soil samples obtained by sampling, and then use a soil sieving instrument to sieve the soil into soils of different particle size levels through sieves with different apertures. Generally speaking, the soil required for physical analysis is generally screened through a 2mm aperture screen, and the soil required for chemical analysis is generally screened through a 1mm / 0.5mm aperture screen. [...

AI Technical Summary

Problems solved by technology

This leads to a very cumbersome process of taking the soil sample out of the sampling sieve, wasting a lot of time and energy of the laboratory inspectors; On the sample sieve, this has caused certain pollution to the sample sieve

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