SU972232A1 - Device for determination of ground volume mass - Google Patents

Description

(54) DEVICE FOR DETERMINATION OF BULK MASS

SOILS

one

The invention relates to technical measurements, namely the determination of the volume mass of treguinated clay, crushed stone, pebble and wood soils, and can be used both in laboratory and in field conditions.

A device for measuring the bulk density, containing a fixed vessel with a constant liquid level and an electric level indicator, placed in a separate pipe, communicating with the vessel for the body to be measured, and a burette for reading the volume is made moving along the vertical leg 1.

It is also known a device for determining the bulk density of the soil, consisting of a body with a graduated shkaloy, which is placed in the receiving tank and the lid 2.

The known devices have a low measurement accuracy.

The purpose of the invention is to improve the accuracy of measurement

The goal is achieved by the fact that the device for determining the volumetric mass of soils containing the receiving tank and the loading tank installed in it

with a scale, the loading tank contains a bunker, the bottom of which serves as a shelf fixed on the axis, equipped with a V-shaped raznoplechim lever, hinged, the long end of which is spring-loaded, a side hatch with a sloped bottom for dumping soil, stops, located on the outside of the loading tank and installed into the grooves of the receiving tank, on the wall of which there is a risk.

FIG. 1 schematically shows the proposed device; in fig. 2- view of the stops, grooves and the plate.

Claims (2)

The device contains a receiving tank 1, which is a quadrangular transparent box with a gauge 2 for marking the level of the filled liquid 3 and the loading tank 4 containing the hopper 5, a folding shelf 6 mounted on the axis 7 with a groove 8 which is the bottom of the bunker 5 and on which samples of the soil under study 9 are located, side hatch 10 with a scoop bottom for dumping soil into the receiving tank 1, stops 11, which are located on the outer part of the loading tank 4 and are installed in the grooves 12 of the receiving tank 1. Ogkidny shelf 6 The V-shaped multi-arm lever 13 pivotally mounted on the axis 14 is twisted and released, its long end is spring-loaded with an elastic element, such as a spring 15. To determine the change in water level in the loading container 4, a graduated scale 16 is located on its side wall. The device works as follows. the tank 1 is filled with water up to the risks 2, marking the level of filling of the liquid. Through the hatch 10, the sample of soil 9 is fed into the bunker 5. To lock the bunker 5, the folding shelf 6 loading capacity 4 is mounted vertically, i.e. hatch down and tilting shelf 6 under its own weight returns to its original position and is locked by lever 13. Next, loading capacity 4 is installed by stops 11 into grooves 12 of receiving container 1. Under the influence of force P on lever 13, the latter moves. The support end of the lever 13 falls into the groove 8 of the folding shelf 6, which under the ground mass and its own weight is lowered vertically, and the soil sample under the force of its own weight is dropped into the receiving tank 1. Underpressure of the air in the discharge tank 4 leads to a rise in water. The volume of the soil is determined with the help of a calibration curve and the volume of its mass is calculated using the calibration curve. An increase in the accuracy of measuring the volume of the soil being studied is achieved by eliminating volume distortions due to the ingress of air bubbles emitted from the soil when discharged into water. Apparatus of the Invention A device for determining the bulk density of soils, containing a receiving tank and a loading tank installed in it with a scale, characterized in that in order to improve the measurement accuracy, the loading tank contains a hopper, the bottom of which is fixed on the axis of the shelf, equipped with a V-shaped arm with a lever mounted, hinged, the long end of which is spring-loaded, a side hatch with a sloping bottom for dumping soil, stops placed on the outer part of the loading tank and installed in the receiving slots containers, on the walls of which there is a risk. Sources of information taken into account during the examination 1. USSR author's certificate No. 150657, cl. G 01 F 17/00, 1962. 2. Guidelines for laboratory studies of the properties of rocks on pilot plants and VZPI devices. M., VZPI, 1971, p. 39-41 (prototype).