SU1610048A1 - Ejector-type dust trap - Google Patents

Abstract

The invention relates to the mining industry and is intended to combat dust during the operation of mining machines and the overloading of the rock mass. The goal is to increase the efficiency of dust collection by reducing aerodynamic drag and improving the conditions of removal of the water-slime mixture. The dust collector includes a cylindrical body (K) 1, in which the nozzle and fairing 3 are placed. The latter is made in the form of two base-connected cones. In the first, in the direction of movement of the air flow, the cone of the fairing is equipped with sludge removal blades (L) 4 having grooves 5 bent towards the working surface L 4. Entrance edges L 4 are located in planes passing through the longitudinal axis of the cone. Output edges L 4 are located at an angle of 40-50 ° to the indicated planes. Grooves 5 L 4 are inserted through the annular groove 6 into the cavity of the sludge collector 7 with a branch pipe 8. Dispersed by the nozzle 2 water droplets move with great speed and kinetic energy ejecting air suspended dust particles from the dust source. This creates a movement of the dusty air stream in K 1, where intensive wetting of the dust particles with a water torch from the nozzle 2 occurs. The vodo slurry mixture formed flows from the K 1 walls and flows through the annular groove 6 into the sludge collector 7. Leaving the water mixture behind due to the installation L 4 on the grooves 5 also enters the sludge collector 7. 3 Il.

Description

The invention relates to the mining industry and is intended to combat dust during the operation of mining machines and the overloading of the rock mass.

The aim of the invention is to increase the efficiency of dust collection by reducing the aerodynamic drag and improving the conditions for draining the water mixture.

Pa figs. 1 image of a dust collector, section; in fig. 2 - fairing with two blades, cross section; in fig. 3 - the same, side view

The dust collector consists of a cylindrical body 1 in which a nozzle 2 and a fairing 3, made in the form of two, connected by bases, cones are placed. The sludge discharge blades 4 are mounted on a first cone in the direction of the air flow. The input edges of the blades are located in the planes passing through the longitudinal axis of the cone, and the output edges are located at an angle of 40-50 to the indicated planes m.

5 patched through ring pas

6c in the cavity of the sludge collector 7 with a branch pipe 8.

The ejector dust collector works in the following way.

The water supplied under pressure from the pump through the high-pressure hose goes to the nozzle 2. The water droplets dispersed by the nozzle move with great speed and kinetic energy, ejecting air with suspended dust particles from the source of formation. Due to this, directional movement of the dusty air stream into the body 1 of the pulverizer is formed, where intensive wetting of dust particles with a water torch from the nozzle 2 occurs. upon further movement, the flow of the water-dust mixture runs over the working surface of the sludge-separating blades 4, where the moistening of dust particles with water drops occurs. Since the blades are bent and have an installation angle of 15-20 °, a centrifugal force arises, rejecting the resulting water-slime mixture in the output, which is beveled

angle 45 °, the edges of the blades grooves 5. Due to the tilt of the output edges

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610048

blades at an angle of 40-50 ° with respect to the planes, the passage of p1 of them through the longitudinal axis of the cone, in which the entrance edges are located, as well as the conical shape of the fairing, the vodollama mixture by centrifugal force and air flow is directed along the grooves to the sludge collector 7. Except Togo,

10, the front cone, directing the air flow from the center to the periphery and thus facilitating the flow of slime through the grooves, eliminates a stagnant zone at the bottom of the exit edge.

1 scapula. The rear cone ensures smooth flow and prevents turbulization of the air flow. The sludge mixture collecting in the sludge collector 7 is discharged through the pipe 8, and the dust-free air is discharged into the working atmosphere.

When the value of the angle of inclination of the posterior edges of the blades is less than 40, the result is 25 Dit. a greater twisting of the air flow in the axial direction while reducing the effect of the direction of flow from the center to the periphery, which leads to the ejection of droplets of the slurry-water mixture from the grooves and their entrainment by the air flow into the working atmosphere, and an increase in the rear edge inclination angle force, which leads to a decrease in the efficiency of sedimentation and wetting of the particles on the working surface of the blades.

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Claims (1)

Invention Formula An ejector dust collector comprising a cylindrical body, a nozzle, a fairing with sludge removal blades having grooves bent towards the working surface of the blades, and a sludge collector that is characterized in that, in order to increase the efficiency of dust removal by reducing aerodynamic resistance, the dust filter will be removed. improving the conditions for removing the water mixture, the fairing is made in the form of two base-connected cones, the blades mounted on the first cone in the direction of the air flow; and that inlet edges of the blades are located in planes extending through the longitudinal axis of the cone, and the output the edges are at an angle of 40-50 ° to the indicated planes, and the sludge collector is made in the form of rings, covering the outside of the dust collector housing, and the grooves of the blades are inserted into the cavity of the collector. ..l figure 1 Fig.Z