SU1524930A1 - Vortex dust trap - Google Patents

Abstract

The invention relates to dust removal equipment and allows for increased gas cleaning efficiency. The dust collector contains a cylindrical body 1, in the lower part of which axial inlet 4 of a swirling gas flow is located, a fender washer 5, a fairing 7 and a dust collector 9. Additional washer 8, made with a beveled surface, is mounted on the axial inlet 4 below the fender washer 5 or on the cylindrical body 1, and axial insertion 4 is also made in the form of a truncated cone with an opening angle equal to a similar angle of the fairing. 4 hp f-ly, 3 ill.

Description

FIG. /

The invention relates to dust removal equipment and can be used in the chemical, metallurgical and other industries for cleaning gas from dust.

The aim of the invention is to increase the efficiency of the cleaning gas stream.

FIG. 1 shows a dust collector with the fastening of an additional washer on the axial input, general view; figure 2 - part of the dust trap with fastening additional washers on the body; in fig. 3 - axial entry with a fairing with a section increasing along the flow.

The vortex dust collector contains a cylindrical body 1, in the upper part of which there is an axial outlet pipe 2 for removing the cleaned gas and a tangential pipe 3 for introducing a swirled stream of secondary gas. In the lower part of the housing 1 there are axial inlet k of a twisted gas flow, equipped with a fender washer 5, a tangential swirler 6, a fairing 7 and an additional washer 8. A dust collector 9 is located below the axial entry.

Vortex dust collector works as follows.

The dusty gas stream is fed through an axial inlet, where it, after passing through the tangential swirler 6, twists and enters the cylindrical body 1. Here, due to the action of the spinner 7, the dusty gas stream forms an upwardly expanding cone. The gas flow entering through the tangential nozzle 3 forms an external near-wall flow downward, opposite the internal flow. From the internal flow, the dust particles under the action of centrifugal force move to the external flow and rush into the lower part of the apparatus, while the gas from the external flow in the lower part of the apparatus, reflecting from the fender washer 5, passes into the internal flow and is removed from the dust collector through pipe 2 The captured material through the gaps formed by the fender washer 5, additional washer 8 and body 1, is removed to the dust collector 9. The fender slopes and additional washers are chosen to be equal to eliminate the possibility of dust delay for additional

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wear washer, if its slope is less than the slope of the fender washer. The slope of the extra washer, greater than the slope of the breaker washer, while maintaining the ratio of the diameters, creates the same effect as in the proposed dust collector, however, leads to an increase in the weight of the washer.

Dust particles from the ascending stream are moved by the centrifugal force to the near-wall area of the apparatus. At the same time, the force acting on the particles is proportional to the mass of the particles, therefore, large particles faster than small particles reach the near-wall zone and, with a downward flow, are trapped, and small particles (practically less than 10 microns), rotating in the central zone, are carried away by the ascending central stream and with it are emitted through the pipe 2 into the atmosphere. To prevent this phenomenon, it is necessary to create a conical, upwardly expanding shape of the ascending dusty gas flow, which will allow both large and small particles to be moved into the wall area. The conical shape of the dusty gas stream is created by the conical shape of the fairing and axial entry and the domed upper part of the fairing. The presence of an additional washer mounted on an axial inlet or a cylindrical body makes it possible to create an additional gate in the path of removal of small particles from the dust collector by a gas stream entering the hopper with particles and gas displaced by particles entering the bunker. Thus, the presence of an additional washer in the skin increases the efficiency of the dust catcher.

Claims (5)

1. A vortex dust collector containing a cylindrical body located in its lower part an axial inlet of a swirling gas flow with a fairing and a fender washer, the upper surface of which is made with a bevel, and a dust collector placed in the upper part of the body outlet pipe, characterized in that, in order to increase the efficiency of cleaning the gas flow, it is equipped with an additional washer placed under the fender washer, Execute the bevel in the direction of motion captured dust with a slope equal to the slope of baffle washer. 2. A dust collector as claimed in claim 1, wherein the additional washer is installed on the axial inlet of the swirling gas flow, and the ratio of its outer diameter to the diameter of the body is 0.1: 1. 3. Dust collector pop. 1, differing from the fact that additional 52 930 n - Yu -15 The body washer is fixed on the outer surface on the wall of the case, and the ratio of its internal diameter to the diameter of the axial input is equal. 4. Dust collector according to claim 1, about tl, which is due to the fact that the fairing is made with a cross section increasing along the gas flow, and its upper part is made dome-shaped. 5.-Dust collector according to claims 1 and 4, which is characterized by the fact that the axial introduction of the swirling gas flow is made in the form of a reverse truncated cone with a opening angle equal to the opening angle of the fairing. Ft 2 7 1 thebes