SU978925A1 - Vortex-type dust trap - Google Patents

Description

The invention relates to devices for the mechanical cleaning of gases from dust and can find application in various sectors of the economy.

Known is a vortex dust collector comprising a housing, a lateral tangential pipe for outputting purified gas, an axial pipe for introducing purified gas, having an annular gap on the lateral surface, bounded externally by two truncated cones, between which there are twisting blades [1J.

A disadvantage of the known device is that a significant part of the fine dust is carried away with the stream of purified gas.

The purpose of the invention is to increase the efficiency of dust collection by reducing the entrainment of fine fractions.

In the proposed vortex dust collector, comprising a housing 'a side pipe for outputting purified gas, an axial pipe for introducing purified gas, having an annular gap on the lateral surface delimited externally by two truncated cones between which twisting vanes are installed, the goal is achieved due to the fact that it equipped with a device for introducing a secondary gas installed in the upper part of the housing, made in the form of two truncated cones, large bases attached to the wall of the housing with locks placed between them ivayuschimi blades.

In order to use atmospheric air as a secondary gas in the wall of the housing of the proposed vortex dust collector between truncated cones, an annular gap is made.

In FIG. 1 shows the proposed vortex dust collector; in FIG. 2, section AA in FIG. 1; in FIG. 3 section BB in FIG. 1.

The dust collector comprises a housing 1, an axial pipe 2 for introducing a gas to be cleaned with an annular gap bounded by two truncated cones 3, between which twisting vanes 4 are placed. In the upper part of the housing 1 there are two truncated cones 5, between which there are twisting vanes 6, in the wall of the housing an annular slit is made 7. The lower part of the housing 1 is separated by a truncated cone 8, forming a dust collector 9 with a dust valve 10. In the upper part of the housing there is a pipe 11 for removing purified gas.

The dust collector operates as follows.

The cleaned air is supplied to the axial tube 2. The large fractions of dust contained in it 5 fly by inertia down into the dust collector 9, and the air with the remaining dust particles · enters the space between the truncated cones 3 and. twists on 10 Shovels 4. Under the action of centrifugal forces, dust particles are thrown to the wall of the body and poured down. The gas with the remaining small fractions of dust rises and falls ι5 into the zone of action of the secondary gas, forming a counter vortex. The dust-free gas is discharged through the pipe 11.

As the secondary gas 20, pure gas or atmospheric air can be used, which enters the dust collector through an annular gap 7 into the space between the truncated cones 5 and is screwed with a blade of 25 mi 6.

this was within 20% of the total productivity.

Claims (2)

Claim 1. A vortex dust collector comprising a housing ^ a side nozzle for removing purified gas, an axial pipe for introducing a gas to be cleaned, having an annular gap on the lateral surface, bounded externally by two truncated cones, between which twisting blades are installed, characterized in that, in order to increase t the efficiency of dust collection by reducing the entrainment of fine fractions, it is equipped with a device for introducing secondary gas installed in the upper part of the housing, made in the form of two truncated cones, large bases at replennyh to the wall of the housing, with placed between the swirl vanes. 2. The vortex dust collector according to claim 1, characterized in that, in order to use atmospheric air as a secondary gas, Comparative tests of the proposed and well-known dust collector showed that the degree of air purification, ceteris paribus, from cement raw meal increased from 88.2 to 99.8%. The secondary gas flow rate in the case wall between the truncated cones is an annular gap.