SU1738390A1 - Device for dynamic dry air concentration of loose materials - Google Patents

Abstract

The invention makes it possible to increase the productivity and quality of enrichment due to the vibrodynamic effect separately on each fraction of the bulk material (M). The device includes successively installed pneumosupercharger 1, a booster pipe (PT) 5 with a loading device and a separation chamber (RC) with a baffle plate on the inner surface of the rear wall opposite to PT 5. In the lower part O K, collections of 20 products are sequentially installed from PT 5 enrichment. Between them in the Republic of Kazakhstan are installed parallel to each other, obliquely in the direction of the PT 5 and stepwise in height with increasing heights from the PT 5 to the back wall of the RC of the partition 12, rigidly connected with the RC. At their upper ends, pivotally mounted towards PT 5 and with the possibility of a fixed rotation, the dissecting plates 9, which are the flow dividers. On the partitions 12 under the hinges 11 from the side of the PT 5, additional fender plates are installed, and AND VJ CO 00 GO about 20 20 20

Description

nozzles 15 are located under them. Part of the RC, associated with PT 5, is designed as a socket b extending from PT 5 at an angle of 45-60. Regarding PT 5, the socket 6 is rigidly installed, and the adjacent part 7 of the RK with partitions 12 is oscillatory and is connected with the vibration exciter 8 mounted on the outer surface of the RK. The upper part of the Republic of Kazakhstan reported system

aspiration. When ejected from PT 5, the air-air jet with M expands by the size of the bell 6. The M particles move with high horizontal velocity into the oscillating part 7. By the plates 9, the flow is divided into fractions. The grains M hit the baffle boards, which allows the cleaning of M o M 2 Cf f-crystals, 3 sludge.

The invention relates to devices for the enrichment of bulk materials and can be used in the mining, chemical, metallurgical, construction, agricultural and other sectors of the national economy.

The purpose of the present invention is to increase the productivity and quality of enrichment due to the vibrodynamic effect separately on each fraction of the bulk material.

1 shows a device for enriching materials, a general view; figure 2 - section aa in figure 1; on fig.Z - node I in figure 1.

The device for dynamic air-dry enrichment of bulk materials consists of successively installed pneumosupercharger 1, a vibrating loader with a sieve 32 on elastic shock absorbers 3 and a loading nozzle 4, which interact with the accelerating tube 5 inserted into the fixed part of the socket 6 of the separation chamber, which contacts through elastic dampers with an oscillating part 7 of the separation chamber containing an exciter 8 on the outer surface, flow dividers in the form of dissecting x plates 9 with turn locks 10 and hinges 11 through which they are connected with partitions 12 inclined to the expansion pipe, containing additional baffle boards with cells 13 and pipes 14 under the shields in which directional-acting nozzles 15 are installed in a checkerboard pattern and radially The fixed part of the separation chamber for removing dust particles is connected in the upper part by air ducts 10 to the cyclone 17, the bunker 18 and the fan 19 of the aspiration system.

The baffle plate is installed on the inner rear surface of the rear wall of the separation chamber opposite to the expansion pipe. At the bottom of the

The accumulation chamber 20 is installed in series with the expansion chamber. The baffles 12 are installed between the collectors 20 parallel to each other, obliquely in the direction of the expansion pipe, stepwise in height, with increasing height from the expansion pipe to the rear wall and rigidly connected with the oscillating part of the separation chamber. The cutting plates are directed to the expansion pipe.

A device for dynamic air-dry enrichment of bulk materials works as follows.

The source material is fed to the vibrating hopper of the loading device with sieve 2, where oversize inclusions are removed from it by vibration effects. Then, under its own weight, the material enters the loading nozzle 4, from which also under the action of its own weight and the vacuum created by the high-speed flow from the pneumosupercharger 1, the material is captured and transferred to the accelerating pipe 5, in which it moves initially during turbulent motion, in which from dust particles, and then goes into steady-state laminar movement, in which small particles are moved to the upper zone of the pipe, and large ones - to the lower zone. When ejected from the expansion pipe, the gas-air jet with the material expands by the opening of the bell of the fixed part of the separation chamber b, and the particles of materials with high horizontal velocity move to the oscillating part-7, where the flow of the mixture is divided into fractions by plates 9 and the grains of the material hit about fenders with cells 13 inclined partitions 12, which allows the material to be cleaned of material. Further, the grains of material from collisions and vibrations from the directional vibration exciter 8 are moved, where chemical effects are obtained from the nozzles 15 from the pipes 14, which improve their quality, and then go to the consumer.

At the same time, this process removes dust particles through the air ducts 16, cyclones 17, and bunker 18 with the help of a fan 19.

When it is necessary to reduce the fractions of the material, the plates 9 are rotated around the hinge 11 and, in the desired position, are installed with the help of a clamp 10.

The opening angle of the socket 45-60 ° is selected based on the condition of the formation of a gas-air jet when flowing out of the cylindrical pipe.

The jet of gas-air mixture tends to be laid on the plane enclosing the chamber. Therefore, the output jet should not touch the surface of the chamber. Depending on the speed of the material and the diameter of the pipe, its reversal is taken in the range of 45-60, since a jet plume is formed at these boundaries when the gas-air mixture is ejected from the outlet of the accelerating pipe.

Claims (3)

1. Device for dynamic air-dry enrichment of bulk materials, including successively installed pneumosupercharger, accelerating pipe with loading device, separation chamber with baffle plate on the inner surface of the rear wall opposite the accelerating pipe, and collections of enrichment products installed in the lower part sequentially from accelerating pipe, vibration exciter mounted on the outer surface of the separation chamber, aspiration system communicated with the upper part of times A separating chamber, characterized in that. with the purpose of increasing the productivity and quality of enrichment due to the vibrodynamic effect separately on each fraction of the bulk material, the device is equipped with partitions installed in the separation chamber between the collectors of enrichment products parallel to each other, obliquely in the direction of the expansion tube, stepwise in height, with increasing heights from the expansion tube to the rear wall and rigidly connected to the separation chamber, flow dividers in the form of dissecting plates hinged on the corresponding the upper ends of the partitions towards the accelerating tube with the ability fixed rotation, and additional baffle plates mounted on partitions under the hinge on the side of the booster tube, while part of the separation chamber is associated with the booster pipe, made in the form of a socket expanding from the accelerating pipe at an angle of 45-60 °. 2. The device is pop.1, characterized in that the separation chamber is made integral, and the socket is rigidly mounted relative to the accelerating tube, the part adjacent to it with partitions and baffle plates is oscillable and connected to the vibration exciter. 3. The device according to claim 1, characterized by the fact. that the separation chamber is equipped with nozzles installed under the fender plates. Aa ъ iO .Fig. 2