SU1586785A1 - Cyclone - Google Patents

Abstract

The invention relates to dry inertial gas cleaning devices and reduces power consumption and simplifies the design. The cyclone contains an inlet tangential nozzle 1, an outer 2 and an inner 3 cyclone chamber, an outlet axial nozzle 7, a bunker-dust collector 12 of a large fraction, and an additional hopper-dust collector 13 of the fine fraction. The lower end of the housing 6 of the inner cyclone chamber is provided with curved dust concentrators 9, made tapering from top to bottom with tapering down slots 10 and connected through holes with an additional hopper. On the side of the outer and inner cyclone chambers, the wings 22 and 23 are installed on the hubs. 1 Cp f-ly, 7 ill.

Description

core dust collector 13 small fraction. The lower end of the housing 6 of the inner cyclone chamber is provided with curved dust concentrators 9 made tapering from top to bottom with tapering slots

10 and connected through holes with an additional bunker. From the side of the outer and inner cyclone chambers, the wing sets 22 and 23 are installed on the hubs. 1 Cp f-crystals, 7 ill.

The invention relates to devices for dry inertial gas cleaning from suspended particles and their classification and can be used in industries that use these processes.

The purpose of the invention is to reduce energy consumption and simplify the design.

FIG. 1 shows a cyclone, side view; in fig. 2 shows section A-A in FIG. 1 at the base of the dust concentrators; in fig. 3 is a section bB in FIG. 1 along the mouth of dust concentrators; in fig. 4 - scan of the case of the inner cyclone chamber with adjacent dust concentrators; in fig. 5 shows a section B-B in FIG. 4 at the point of entry of dust and gas into the dust concentrator; in fig. 6 and 7 - section G-D in FIG. 4 (variants of cross-sections of channels of concentrators with wing buttons).

The cyclone contains an inlet tangential nozzle 1, an outer 2 and an inner 3 cyclone chamber, formed by the upper 4 and lower 5 parts of the outer case, the inner case 6 and the outlet axial nozzle 7. In the lower part, dust concentrators 9 are attached to the inner case 6 by the bases 8. Along the dust concentrators 9, starting from the base 8, slots 10 extend, tapering towards the mouth 11 of the dust concentrators 9. The mouth 11 through special openings in the dust bin 12 of the outer cyclone chamber 2 enters the additional dust bin 13 of the inner cyclone chamber 3. The outer body of the cyclone is made telescopic and consists of the upper 4 and lower 5 parts. An annular gap between the upper 4 and lower 5 parts of the outer casing is filled with an epiploon 14. The support ring 15 prevents the epiploon 14 from exiting into the outer cyclone chamber 2 by pressing the stopper 16, the studs with the nuts 17, the flanges 18 and 19. The external cyclone chamber 2 is shortened with the help of studs 20 with nuts and flanges 18 and 21. Attachments 22 of the deflection of the air flow of the external cyclone chamber 2 and of the stabilization of airflow 23 of the internal cyclone chamber 3 are rigidly attached to the dust concentrators. The hubs of the dust concentrates with the wing-openings are filled with openings 24. In the flanges 18, studs 17 and 20 are inserted into the holes alternately.

The bunker of the large fraction 12 is supplied

the discharge device 25, and the additional bunker of the fine fraction 13 - the device 26.

The cyclone works as follows. Gas containing suspended particles through the inlet tangential nozzle 1 enters the upper part of the outer cyclone chamber 2, where it is twisted along

downward helix. In this area of the dust-gas flow, larger particles, under the action of inertia and other forces, arising in the swirling gas flow, are thrown to

the wall of the upper part 4 of the outer casing. These coarse dust particles hit the wall, lose some of the speed and sink into the dust bin 12 of the outer cyclone chamber. After this dust and gas flow

divided. One part of the dust and gas flow continues to move along the downward helix in the external cyclone chamber, where loosening of the dust particles continues. The second part of the dust and gas flow is cut off by the inner casing 6 and enters the inner cyclone chamber 3, where it also continues to move along the downward helix. Inertial forces reject small particles remaining in gas

dust particles to the inner surface of the inner casing 6. Small particles hit the wall, lose some of the speed and fall to the mouth 11 of the dust concentrators 9, which are directed against the movement of the gas. Small dust particles with gas enter the curved channel of dust concentrator 9. In this case, the dust-gas flow is curved downwards by the concentrator, which provides additional separation

dust particles from gas due to inertial forces. Since the dust concentrators 9 taper downwards, the gas, cleaned from dust particles, leaves the dust concentrators 9 through tapering slots 10 and enters the outlet axial port 7. Fine dust is collected through the mouth of the 11 dust concentrators 9

enters the dust collector 13 of the internal cyclone chamber 3.

Gas. cleaned in an external cyclone chamber, it is deflected by means of wing-posts 22 mounted on the dust concentrator 9 at an angle of 30-45 to the cylindrical surface of the inner case b and through the gaps 24 between the dust concentrators 9 enters the output axial nozzle. At the same time, to stabilize the air drip coming from the external cyclone chamber 2, are wing 23, also installed at an angle of 30-45 ° to the cylindrical surface of the inner housing 6.

The size of the dust particles captured by the outer 2 and inner 3 cyclone chambers is controlled by changing the distance from the top of the outer cyclone chamber 2 to the top of the inner cyclone chamber 3. With increasing distance of this distance, the median size dso of large dust particles trapped by the outer cyclone chamber 2 decreases, The median size dso of fine dust particles captured by the internal cyclone chamber is also reduced. With a decrease in this distance, the median size of the dso of large dust particles captured by the external cyclone chamber increases, the median size of dso of fine dust particles captured by the internal cyclone chamber also increases. The distance from the top of the outer 2 to the top of the inner 3 cyclone chambers is controlled by means of studs 20 with nuts inserted into the holes of the flanges 21 and 18.

Additional regulation of the particle size of the dust captured by the outer 2 and inner 3 cyclone chambers is carried out during the manufacture of the cyclone;

A-fi

hch

23

2

5 10

15 0

0

five

0

five

boron required ratio of the diameters of the inner and outer shells of the cyclone.

The coarse fraction dust collected from the dust bin 12 is discharged through the discharge device 25, and the fine fraction dust collected from the additional dust bin 13 is discharged via the discharge device 26.

Claims (2)

Claim 1. Cyclone containing inlet tangential and outlet axial nozzles, coaxially mounted external and internal cyclone chambers, dust bin, which is characterized by the fact that, in order to reduce energy costs and simplify the design, it is equipped with an additional bunker - forest collector, dust concentrators, made curved, tapering from top to bottom, evenly spaced along the end of the lower part of the inner cyclone chamber and adjacent to each other and the chamber end with upper edges, while in the walls ontsentratorov with their inner sides are made downwardly tapering slit, the dust collecting hopper of the outer chamber is formed with openings through which lower portions communicate with complement concentrators tional dust collector hopper and the outer cyclone chamber is telescopic. 2. Cyclone according to claim 1, characterized in that, in order to reduce the turbulence in the gas flow, the dust concentrators are provided with wing-mounted jacks fixed to them, each of which is mounted at an angle of 30-45 ° to the cylindrical surface of the inner cyclone chamber. 5-6 23 23 YU L (7..L. FIG.  .five 9 22 FIG. 7