Electric pug mill for making soil sample of specific moisture content

Abstract

The invention discloses an electric pug mill for making a soil sample of specific moisture content. The electric pug mill comprises a base, a supporting rod, a supporting cross bar, a mixing tank, a mixing head and a motor. According to the device, the mixing head adopts the principle of an egg whisk, one end is fixed, and the other end is movable, so that the contact area between the water and soil the sample is enlarged, and the soil sample and water can be fully contacted; and therefore, uniform mixing is realized, the bending degree of steel bars between flanges can be adjusted, and soil samples at different positions are further adjusted and mixed. By taking electric power as the power, the conditions that the force is non-uniform during manual mixing, the made soil samples are non-uniform due to spilling of distilled water and soil particle aggregate appears can be avoided, time and labor can be saved, and losses of the water and soil samples during mixing are reduced, so that the made soil samples meet test standards; a test jar is adopted at the bottom, so that muddy water is avoided from splashing in the mixing process; and the mixing tank is fixed on a supporting seat, sothat the mixing tank can be avoided from sliding down, and the position can be optionally moved.

Description

technical field [0001] The invention belongs to the field of indoor soil engineering tests, in particular to an electric soil mixer for preparing soil samples with specific water content. Background technique [0002] In nature, the formation process of soil is very complicated. Under the influence of sunlight, atmosphere, water and biological factors, the rocks on the surface of the earth’s crust undergo weathering, causing the rocks to disintegrate and fragment, and are transported by flowing water, wind, glaciers and other dynamic forces. function, and deposit under various natural conditions to form soil. The formation process of soil determines that it has special physical and mechanical properties. On the one hand, soil is loose, with no or certain bonding between particles, and there are a large number of gaps, which can permeate water and air; on the other hand, soil is composed of solid The three-phase system composed of particles, water and gas, the quality and qu...

AI Technical Summary

Problems solved by technology

According to the method of "Standards for Geotechnical Test Methods (GBT 50123-1999)", most laboratories use soil mixing knives to mix in enamel bowls. However, in the process of mixing soil samples, human factors will bring certain influences, such as human Improper control of stirring intensity, dead angles in stirring, manual labor, etc., will reduce the degree of uniformity of stirring the soil sample. The mixing time is very long, the water is easy to evaporate, and the soil particles are prone to clumps, which will affect the experimental results.

Moreover, the specifications of the soil-conditioning knife are relatively small at present, and most of them are suitable for relatively small soil sample containers, which limits the scope of application of the soil-conditioning knife

In addition, in addition to artificial soil stirring devices, there are also some large soil stirring devices used in engineering practice. These soil stirring devices are large in scale, noisy, and difficult to move, so they are not suitable for use in laboratories.

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