SU1324965A1 - Arrangement for slurrying and hydraulic conveying of loose material - Google Patents

Abstract

The invention relates to devices for mixing solid materials with a liquid and can be used in the beneficiation of minerals. The purpose of the invention is to increase the reliability and reduce the segregation of the material. The device comprises a hopper 1 with a perforated diaphragm 4 installed in its container, dividing it into the upper 7 and lower 8 cavities. Holes 9 are made in the wall of the bunker 1, which connect the upper cavity 7 with a system for supplying a transporting medium made in the form of a container 11 rigidly fixed to the outer side of the side wall of the bunker I with a drain window 12. The lower cavity 8 is connected to the atmosphere by means of a tube 15, the upper the end of which is located higher than the drain threshold of the window 12. When the material hits the diaphragm 4, a reduction is formed above its holes, which prevents the passage of coarse-grained material through them. Liquid 11 is supplied to vessel 11. When stabilization level is reached through window 3 and conduit 13 enters diaphragm 4, liquid is filtered through coarse-grained material and accumulated over diaphragm 4. This leads to an increase in plasticity of the wet coarse-grained material, a decrease in arching radius and with the equality of the last half of the size of the holes in the diaphragm 4, there is an outflow of material through the holes. 3 hp ff, 4 ill. S (L 3 9 737 7U / / / L // 72 о: to 4 СО 05 О1 Fig. З

Description

The invention relates to devices for mixing solid materials with a liquid and can be used in the beneficiation of minerals.

The purpose of the invention is to increase the reliability and reduce the segregation of the material.

FIG. 1 shows a diagram of an apparatus for pulping and hydraulic transport of bulk material with a rectangular hopper; in fig. 2 is a view A of FIG. one; in fig. 3 is a diagram of a device with a round section hopper; in fig. 4 is a view B in FIG. 3

The device comprises a bunker 1 of a cylindrical (FIG. 3) or prismatic (FIG. 1) form with an outlet funnel 2 in the form of a cone (FIG. 3) or a pyramid (FIG. 1) and calibrated with an outlet hole 3 in the bottom. In the outlet funnel 2 a perforated diaphragm 4 is installed. The total perforation area of the diaphragm 4 is larger than the area of the outlet 3. The diaphragm 4 is rigidly attached along the perimeter to the inner surface of the walls of the bunker 1 and is installed with an inclination to its vertical axis. In the case of use in a rectangular-section bunker (Fig. 1), the diaphragm 4 is a flat inclined partition, and in the case of a circular section in the bunker (Fig. 3), the diaphragm 4 is made in the form of a perforated funnel 5 installed along the axis of the bunker 1 , narrow part down, on the perimeter of which the perforated cone is rigidly fixed to the base with its 6 upwards. The diaphragm 4 divides the capacity of the hopper 1 into the upper 7 and lower 8 cavities. A hole 9 is made in the side wall of the hopper (or a row of holes evenly spaced at one level in the case of a round section hopper), the lower edge mating with the upper edge 10 of the diaphragm 1. Hole 9 (or a row of holes) informs the upper cavity 7 of the hopper with the system for supplying the transporting medium, made in the form of a side 11 of the bunker 1 rigidly fixed to the front side of the bunker 1 along the upper edge 10 of the diaphragm 4 of the tank 11 with the drain window 12 and including in case of installation in the bunker of circular section the pipeline 13, one him end installed in the tank 11, and the other, which can be fixed to the socket 14, in the upper cavity of the hopper 1 over the cone 6.

The lower cavity 8 is connected with the atmosphere through a tube 15, the upper end of which is located above the drain threshold of the window 12. But the upper edge of the hole 9 is fixed to the visor 16.

The device works in the following way.

The hopper 1 with a loading device (not shown) is filled with coarse-grained material (dry or wet). When material enters the diaphragm 4 above its openings, arching occurs, which prevents the passage of coarse grains.

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that material through them. The tank 11 is supplied with liquid, which, when the stabilization level is reached, maintained by the overflow threshold of the window 12, goes through the window 9 and the pipe 13 to the diaphragm 4, where it contacts the coarse-grained material, while the visor 16 and the socket 14 prevent the coarse-grained material from entering and pipe 13. Fluid is filtered through the coarse-grained material and accumulates over the diaphragm 4. This leads to an increase in the plasticity of the wet coarse-grained material, a decrease in the arch radius and p equality latter half of the size of the openings in the diaphragm 4 occurs outflow of material through the apertures.

After passing through the holes in the diaphragm 4, the pulp enters the lower cavity and through the calibrated outlet hole 3 expires under its own weight. The pulp flow through the holes in the diaphragm 4 exceeds its flow through the calibrated hole 3, therefore, the lower cavity is filled with pulp. The air from the cavity is removed through the tube 15 until the slurry overlaps its lower end. Further equalization of the pressure in the cavity occurs due to the occurrence of a liquid column in the tube 15, while reducing the pressure difference at the orifices of the diaphragm 4 leads to a decrease in the flow rate of the pulp through these holes and the flow rate of the pulp is equal to the flow through the calibrated hole 3. The pulp flows out a constant hydraulic pressure equal to the relative height between the level of the liquid in the tank 11 and the cross section of the calibrated orifice 3, which, in combination with the constant density of the outflow py, determined by the density of the slurry through the beginning of expiration aperture openings 4 and the calibrated orifice 3, provides uniform release of the pulp from the apparatus.

The interruption of the supply of liquid to the container 11 leads, as the pulp flows out, to a decrease in the plasticity of the material, to coagulation and to the termination of the outflow of the pulp through the apertures of the diaphragm 4. The outflow of material from the device stops with a time lag determined by the device pulp and the speed of its release.

Foreign objects caught together with the grain material remain on the diaphragm 4, and blocking part of the holes with them does not reduce the flow of pulp from the device by increasing the flow rate of the pulp through the remaining openings of the diaphragm 4.

Claims (4)

1. A device for pulping and hydraulic transport of sonorous material, containing a hopper with inlet and outlet openings, separated by a perforated diaphragm rigidly attached along the perimeter to the inner surface of the bunker walls to the upper and lower cavities, and a system for feeding a transporting medium, characterized in that , in order to increase reliability and reduce segregation of the material, it is equipped with an air tube installed at one end in the lower cavity of the bunker and communicating the latter with an atmosphere The diaphragm is mounted inclined to the vertical axis of the bunker, the side wall of which is made with at least one hole, the lower edge adjoins the upper edge of the diaphragm and communicates the upper cavity of the bunker with a system for feeding the transporting medium made rigidly fixed to the outer side side wall of the hopper along the top edge0 five ki diaphragm tank with a drain window, with the outlet is made in the bottom of the hopper, and the area of the outlet is less than the total area of perforation of the diaphragm. 2. The device according to claim 1, characterized in that the diaphragm is made in the form of a funnel, installed along the axis of the bunker with a narrow part downwards, around the perimeter of which the cone is rigidly fixed with its base with its tip upwards, and the system for feeding the transporting medium additionally includes a pipeline installed in the tank, and the other in the upper cavity of the hopper above the top of the cone. 3. The device according to paragraphs. 1 and 2, characterized in that a visor is fixed in the hopper along the upper edge of the hole. 4. The device according to claim 2, characterized in that a socket is fixed to the second end of the pipeline. five  at 1 2 sixteen FIG.