SU1458567A1 - Apparatus for thermal dust trapping in thermal drilling - Google Patents

Abstract

The invention relates to mining. The goal is to increase the reliability and durability of the device by creating a vortex unit rotating in one direction of the protective low-temperature curtain of atmospheric air along the body walls. The apparatus includes a housing 1 of the vortex apparatus, an inlet 2 and an outlet 3, and a hopper 8 for collecting dust. The device has a fan 5 with nozzles 4 and 6 for the supply of atmospheric air. Nozzles 2 and 3 are located along the axis of the housing. Nozzles 4 and 6 are installed tangentially, one - in the upper part of housing 1, and the other - on nozzle 2. The latter is made with an annular chamber. The pipe 6 is installed on the pipe 2 at the level of the annular chamber. In the nozzle 2 or the annular chamber, the gas-dust high-temperature flow interacts with cold atmospheric air moving along the walls of the apparatus. With the introduction of the nozzle 4, the flow twists. At the same time, centrifugal forces arise that separate the dust against the wall of the housing 1, where dust accumulates under the action of aerodynamic forces and collects in the bunker 8. 1 h. item f-ly, 2 ill. (L

Description

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FIELD OF THE INVENTION The invention relates to mining, in particular to dust collection during thermal drilling and the expansion of blastholes. It can be used in other areas of the national economy where a high degree of purification of high temperature gases from fine hydrophobic dust is required.

The aim of the invention is to improve the reliability and durability of the device.

with cold air flow, twisted tangential entry of the nozzle 4 in the same direction as the acquired rotation of the high-temperature gas-dust flow and further acceleration of the flow, the gas-dust flow generated by this rotation, centrifugal forces separate the dust to the wall of the housing 1, where under the action of aerodynamic forces and gravity dust accumulates and collects in the bunker 8. Purification by creating along the walls of the hull - 10 th air flow through the output patrol of the rotor of the device rotating in one direction second low-temperature curtain of air.

FIG. 1 shows the device when the flow of atmospheric air in the input

side 3 is removed to atmosphere. Reducing the temperature of the gas-dust stream as a result of mixing the high-temperature stream with atmospheric air reduces the viscosity of the medium and increases the trapping

branch pipe; in fig. 2 - the same, when applying the ability of the device. Feed Atmo20

atmospheric air in the annular chamber installed in the inlet pipe.

The device consists of a cylindrical body 1 of the vortex apparatus, in which the inlet pipe 2, the outlet pipe 3, tangentially supplied to the housing 1 in its upper part the pipe 4 of the atmospheric air supply from the fan 5, the pipe 6 of the atmospheric air supply from the fan 5 into the inlet pipe 2 or an annular chamber 7, made in the inlet pipe 2 (Fig. 2), also summed up tangentially. In the lower part of the housing 1 there is a hopper 8 for collecting dust.

The device works as follows.

Through the inlet 2 into the case 1 to the direction of the protective step, a high-temperature gas-dust ,, ,,, „-,. ,,, stream flows. Atmospheric air from the fan 5 enters the housing 1 through nozzles 4 and 6, tangentially injected in such a way that both atmospheric air flows in one direction along the walls of the housing 1. The high-temperature gas-dust flow in the inlet 2 or the annular chamber 7 begins to interact with the cold atmospheric air moving along the walls of the apparatus from the nozzle 6 acquires rotation and enters the housing 1, where the interaction of a swirling gas-dust flow occurs

Spheric air along the walls of the housing 1 and the nozzle 2 or the annular chamber 7 creates a low-temperature curtain near the walls, reducing the degree of temperature corrosion.

Claims (2)

1. A device for dry dust removal during thermal drilling, comprising a vortex unit, inlet and outlet nozzles, and a dust collection bin, characterized in that, in order to increase the reliability and durability of the device, by making the vortex apparatus rotating along the body walls rotating in one temperature range air curtain, it is equipped with a fan with atmospheric air inlets, the inlet and outlet pipes are located along the casing axis, and the inlet pipes of the atmospheric air are installed tangentially one at the top of the casing and the other at the inlet pipe. 2. The device according to claim 1, characterized in that the inlet is made with an annular 40 camera, while the nozzle supply of atmospheric air is installed on the inlet nozzle at the level of the annular chamber. with cold air flow, twisted tangential entry of the nozzle 4 in the same direction as the acquired rotation of the high-temperature gas-dust flow and further acceleration of the flow, the gas-dust flow generated by this rotation, centrifugal forces separate the dust to the wall of the housing 1, where under the action of aerodynamic forces and gravity dust accumulates and collects in the bunker 8. Purified air flow through the exit patra Ny air flow through the output patra side 3 is removed to atmosphere. Reducing the temperature of the gas-dust stream as a result of mixing the high-temperature stream with atmospheric air reduces the viscosity of the medium and increases the trapping device capability. Feed the same atmobility device. The supply of atmospheric air along the walls of the housing 1 and the nozzle 2 or the annular chamber 7 creates a low-temperature curtain near the walls, reducing the degree of temperature corrosion. 20 Invention Formula  protection board ,,, „-,. ,,, 1. A device for dry dust removal during thermal drilling, comprising a vortex apparatus body, inlet and outlet nozzles, and a dust collection hopper, characterized in that, in order to increase the reliability and durability of the device by making the vortex apparatus rotating along the walls of the vortex apparatus in one temperature range air curtains, it is equipped with a fan with atmospheric air inlets, the inlet and outlet pipes are located along the casing axis, and the atmospheric air inlets are installed tangentially one at the top of the casing and the other at the inlet pipe. 2. The device according to claim 1, characterized in that the inlet is made with an annular 0 camera, while the nozzle supply of atmospheric air is installed on the inlet nozzle at the level of the annular chamber. V / "X cpt / .Z