SU1731948A1 - Device for averaging quality of solid bulk material - Google Patents

Abstract

Use: the proposed device is designed to average and obtain a mixture in a given condition of the useful component and improve the quality of averaging, and can be used in all industries where averaging and a mixture of a certain quality are present in the processing chain. SUMMARY OF THE INVENTION: A device for averaging the quality of solid bulk materials contains a loading, unloading and distribution compartment, a bunker consisting of averaging and capacitive compartments with a sloping bottom. The tank compartment is made of separate vertically joined sections. In the lower part of the walls of these sections, adjacent to the distribution compartment, loading niches are made. Discharge openings are made in the lower part of the opposite walls, under which feeders are installed connecting the capacitive and averaging compartments. In the distribution compartment, under the loading niches, double-sided guide ramps are hinged. On the opposite wall of the distribution compartment and the walls of the averaging compartment, the guide ramps are rigidly fixed in a checkerboard pattern. 3 hp f-ly, Zil. cl

Description

The invention relates to the mining and metallurgical industries and can be used in the preparation of ore and non-metallic minerals for subsequent processing. The invention can be used to perform similar operations in other industries.

A device for averaging the quality of solid bulk materials is known, which includes a receiving tank consisting of a storage unit and a loading unit, inverted truncated pyramids, installed one above the other with

between them are double-sided splitters, the drive is provided with a shield mounted vertically in it with the possibility of moving in the horizontal and vertical planes (ed. St. N ° 991051).

This device has the following disadvantages: the source material is placed in the storage in layers. When opening the device, the material in the gravitational flow moves and enters the discharge body in a sequence predetermined by the location of the layers in the storage ring. Therefore, with the qualitative heterogeneity of the layers, the starting material cannot be used.

Yu

N 00

Reddin in the drive. Moreover, this device eliminates the possibility of formation of a mixture with a given quality indicator at the outlet from the bunker, since the design provides for unloading only through the bottom, which does not allow to regulate the unloading of the storage device along its height.

Closest to the proposed device for averaging bulk materials, consisting of a bunker made of two compartments — a capacitive and averaging, distribution cone, averaging tool, loading and unloading devices. The averaging body is made in the form of a pipe with a drive with shaped intake gaps (ed. St. No. 348735).

This device makes it possible to average the material placed in the bunker over its entire height. However, it eliminates the possibility of controlling the composition of the output mixture — the possibility of obtaining a mixture with specified quality indicators.

The drawback of the device is the increased energy consumption associated with the rotation of the averaging organ. The averaging pipe with its entire outer surface is in direct contact with the ore mass loaded into the hopper. In this case, the coefficient of friction between them reaches 0.3 or more, which requires the installation of a high-power drive. Energy costs increase in proportion to the size of the material loaded into the bunker, since this increases the size of the slots, which, in turn, leads to an increase in the diameter of the pipe and, consequently, the area of its outer surface.

The inadequacy of the device is the inability to control the dispersal of the mass in the bunker during its filling.

The purpose of the invention is to create conditions for controlled dispersion of mass in the bunker during its loading, controlled averaging and obtaining the output mixture with a given quality, making the phase shift to reduce energy costs.

The goal is achieved by the fact that in a known device containing loading, unloading and distribution compartments, a bunker consisting of averaging and capacitance compartments with a sloping bottom, the capacitance compartment is made of separate sections joined along the vertical, and in the lower part of the walls of these sections, adjacent to the distribution compartment, loading niches are made, and in the lower part of the opposite walls - discharge openings, under which feeders are installed, connecting

capacitive and averaging compartment, and in the distribution compartment under the boot niches double-sided guide ramps are hinged, and on the opposite wall

in the staggered compartment, one-sided guide ramps are rigidly fixed in the distribution board compartment.

The surface of the slopes is convex or concave, with the protuberances and the concavities alternately alternating in height of separation. Express analyzers are installed on each section of the capacitance compartment, and controls are installed on the piles, which, together with express analyzers, are integrated into an ACS. In the bins, symmetrically arranged

capacitive and distribution compartment. The division of the capacitive compartment into sections and the presence in the boot niches of double-sided hinged slopes allow loading individual sections into

any sequence and thereby disperse the mass in the bunker over various specified components. With the launch of the feeders, single streams of different compositions are involved in one component in one

turbulent flow. At the same time, turbulence is created by dispersing the flow on the convex surface of the slopes, changing the direction of movement of the material when it falls on the slope, and collides

individual pieces. There is a qualitative mixing of the entire source material.

By adjusting the order of runners and their performance

you can make any given phase shift and get the necessary composition for quality.

Giving the bottoms of the capacitive sections of the slope and the device boot niches in

The upstream sections allow maximum utilization of the volume of the hopper for filling it with material. A small amount of energy is required for the operation of feeders, since the contact surface with the material is negligible.

The main features and novelty of the proposed device:

- Mixing and averaging of the material occurs by combining into one

gravitational, turbulent, controlled flow of a number of individual gravitational flows.

- In one bunker, performance of all functional operations in the averaging process is combined at a highly efficient level; material storage, phase displacement, mixing, averaging over any indicator (content of useful component, material size and

DR-).

Figure 1 shows a general view of a device for averaging the quality of solid bulk materials represented by a single-sided bin; figure 2 - the same - represented by a two-sided bunker; FIG. 3 is a control block diagram of the feeders.

The device comprises a hopper 1 consisting of distribution 2, capacitive 3 and averaging 4 compartments. The capacitive compartment 3 consists of vertically joined sections 5, in the lower part of the ends of sections 5 adjacent to the distribution compartment, loading slots 6 are made, at the bottom of the sections there are discharge openings 7 under which the feeders 8 are installed. In the distribution compartment 2 below the loading slots Double-sided guide ramps 9 are hinged with niches 6, and rigidly fixed one-sided guide ramps 10 are mounted on the opposite wall.

In the equalization compartment 4 at the ends adjacent to the capacitive compartment 3 and the opposite, one-sided guide rails 11 are rigidly fixed in staggered order. Above the distribution compartment 2 there is a loading organ 12, and below the averaging compartment 4 there is a discharge organ 13. On the walls of sections 5 Express analyzers 14 are installed, and on the feeders 8, control devices 15 are integrated into the ACS.

The source material is loaded into the distribution compartment 2. At the same time, it enters one of the sections 5 through niche 6, for which the niche is opened by bringing the two-sided guide ramp to the appropriate position 9. All other niches 6 are closed. When falling, the material enters successively on the slopes of closed niches 6 and rigidly fixed slopes 10; at the same time, it quenches speed.

Regardless of the loading of sections 5, averaging occurs. The averaged material through the discharge openings 7 enters the feeders 8, which in a given mode feeds the material to the averaging compartment 4. In this case, individual

streams from sections 5 are combined into a single gravitational flow, which, encountering obstacles in the form of convex and concave surfaces of skates 10, periodically changes the direction of movement, simultaneously moves both in vertical and horizontal directions, is thoroughly mixed by adjusting feeder operation modes 5,

the frequency of their inclusion in the change in performance. Thus, averaging of the quality of the output material in a given condition is achieved.

The mode of operation of the feeders 5 is set

ACS for a given program, for example, for a useful component.

An example of the operation of the device is shown in the block diagram (fig.Z).

Express analyzers determine

the percentage of metal in the exhaust part of each section. The obtained information is fed to a multi-channel converter (interface No. 1), which converts the original signal into the form necessary for the operation of the personal computer (PC). Then the converted signal in a 16-bit code is fed to the PC for processing (for this purpose it can be

any personal computer PC, VM, shared, for example, type XT-1640) was used.

The personal computer calculates the speed of the useful component, since

the control action is presented in the form of a 16-bit code, in device 2, it is converted into a form suitable for further use: in our example, into a voltage level.

From here, the control signal enters the used control (in the example, the motor control winding), which, depending on the incoming signal, gives the engine certain

turnovers. When the values of express analyzers change, the whole process is automatically corrected.

If necessary, it is possible to manually control the operation mode of the feeders. The averaged material is transferred to the discharge body 13 for subsequent transport.

The expected effect from the use of this device is possible due to the following components:

- reducing the cost of creating an averaging complex in connection with a compact arrangement and maximum utilization of working volumes;

- low energy costs, because in all functional operations of the averaging process, only in the operations of feeding material from the capacitive sections into the averaging compartment, it is necessary to use power plants (feeders);

-economic effect on the processing plant in connection with obtaining a semi-finished product with a high degree of averaging.

The overall effect can be assessed only in each case. The Institute of Mining of the Academy of Sciences of the Kazakh SSR has planned the development of standard drawings and recommendations for implementing the device at the processing plants of the country.

Claims (4)

Invention Formula A device for averaging the quality of solid bulk materials containing loading, unloading and distribution compartments, a bunker consisting of averaging and capacitance compartments with a sloping bottom, characterized in that in order to improve averaging of the material, adjust the averaging process to a given condition of the useful component , reducing energy costs, the capacitive compartment is made of vertically joined sections; moreover, in the lower part of their walls adjacent to the distributor loading compartments are made, and in the lower part of the opposite walls there are discharge openings under which feeders are installed connecting the capacitive and averaging compartments, and in the distribution compartment under the loading niches the guide ramps are hinged on the opposite wall in the averaging compartment walls, one-sided ramps are rigidly fixed in a checkerboard pattern. 2. The device according to claim 1, wherein the surface of the slopes is convex or concave, with the convexities and concavities alternately alternating in height of separation. 3. Pop-1 device, characterized in that express analyzers are installed on each section of the capacitive compartment, and controls are installed on the feeders, which, together with the express analyzers, are integrated into the ACS. 4. Pop 1 device, characterized in that, for the purpose of more rational use of the volume of the bunker, symmetrically located capacitive and distribution compartments are additionally made in it. BUT FIG. one FIG. 2 6l o k - scheme