SU1692619A1 - Air cleaning device - Google Patents

Abstract

The invention relates to the hydrospray of air and can be used in any industry where wet methods of cleaning air from dust are applicable. In order to increase the efficiency of cleaning the ventilation air from dust, the outlet nozzle 3 of the device is designed as a diffuser and is installed in the cavity of the inlet nozzle 2 coaxially, at the same level, so that the extended ends of the inlet and outlet nozzles are located opposite to the body,

Description

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the top nozzle 3 and is plugged with a parabolic fairing 7 and connected to a cavity formed by the housing and the inlet nozzle, a extractor made in the form of spiral hollow blades 9 that are segmented in cross section along the air flow;

The invention relates to the hydrospray of air and can be used in any industry where wet methods of cleaning air from dust are applicable.

The purpose of the invention is to increase the efficiency of cleaning air from dust.

1 shows a device, side view in section; figure 2 - section aa in figure 1.

The device for cleaning air from dust is a vertical cylindrical body 1 in which inlet 2 and outlet 3 nozzles are installed coaxially at the same level. The inlet 2 is confused and has a conical narrowing 4 with a taper of 40-60 ° in the upper part, the edges of which are cut into the housing 1, and notches are made in the lower part, the edges of which are bent and form twists. The device case has flanges for connecting it to the duct network.

The outlet nozzle 3 is made diffusive and has a smooth extension 6 in the lower part, which is also embedded into the housing 1 with its edges. In the upper part of the exit nozzle 3 it is plugged with a parabolic fairing 7.

An external contact cavity 8 is formed between the walls of the housing 1 and the inlet nozzle 2, which is connected to the outlet nozzle by 3 hollow blades 9. The hollow blades 9 are made spiral, segment in section, tapering along the air flow. Each section of the blade 9 is embedded in a conical narrowing 4, and smaller in tangential paraboloid fairing 7, In addition, each blade 9 side 10, formed by the chord of the segment facing the axis of the housing 1 and they all form at the entrance to the inlet 2 a static twister , unidirectional with static twister 5.

The cavity 8 at its lowest point has apertures along the perimeter of the wall which are embedded in the conical part of the inlet and the narrow end tangentially into the paraboloidal fairing 7, the spiral blades being set so that the side formed by the chords of the blade sections faces inward. 2 ill., 3 tab.

Pus 1, connected to the drainage tubes 11, and they, in turn, are lowered into an inclined annular manifold 12, covering the housing 1 outside and having a drain 13,

Inside the cavity 8, below the wall of the housing 1, an annular vane partition 14 lies freely, blocking the holes in the drainage tubes 11. This partition

rigidly connected to the annular float 15, located at the level of the static twister 5,

In the upper part of the housing 1, in front of the paraboloid fairing 7 by means of a dust-and-air flow, a foam aerosol generator 16 is installed. The internal contact cavity 17 is formed by the nozzle 2 to the outlet nozzle 3.

The device works as follows.

The entrained air flows from the top of the device, where it interacts with the active part of the foam aerosol torch formed by the generator 16. Then the ice passes between the blades 9, twists and flows through the cavity by the vortex flow through the cavity 17. In this case, intensive wetting and trapping of dust particles by dispersed liquid occurs during the destruction of bubbles of foam aerosol due to intensive aerodynamic effects (vortex effects) and collisions with Structural elements of the device, resulting in the lower part of the cavity 8 accumulates a solution of the foaming agent, the level of which in the device is maintained automatically, by means of the vane 14 and the float 15.

Already in the flare, part of the dust particles due to the predominant effect of adhesive and wetting forces is released from the air flow and flows down the walls in the form of sludge into the lower part of the device. The air flow with the remaining dust particles from the inlet nozzle 2 through the static swirler 5 enters the cavity 8 and, a passage above the surface of the valuable solution accumulated in the lower part of the body creates a foam layer.

The dust particles remaining in the air stream, which have high kinetic energy, are removed from the air stream by interacting directly with the solution layer, and those with low kinetic energy and are most affected by this stream are separated from the latter by the interaction with the foam layer.

The air flow from the cavity 8 rises upward, entraining a part of the bubbles from the foam layer, which capture and remove a part of the dust particles from the air flow.

The passage inside the blades 9, the design of which primarily contributes to the intensification of the process of interaction of the remaining dust particles with the dispersed liquid, as well as the destruction of foam bubbles, the air is freed from the solution formed after the destruction of the solution bubbles and slash due to the slope of the lower section of the blades 9. Cleaned. air through the outlet 3 is removed from the device,

Gradually, the level of the solution in the lower part of the housing 1 rises until it begins to overlap the static spinner 5. At the same time, the float i5 together with the annular vane partition 14 will begin to float, as a result of which the openings of the drainage tubes 11 and the excess solution with the slurry will flow out through them inclined annular collector 12, and then through the drain 13 - into the drainage. The level of the solution decreases, the pop-up 15 and the partition baffle 14 descend and the last closes the openings of the drainage tubes 11.8 ultimately, with stable operation of the device, such an equilibrium will be ensured when the flow rate of the solution entering the cavity 8 is equal to the flow rate of the removed one.

The efficiency of cleaning dusty air was studied at an air flow rate at the device inlet Vm of 10.5 m / s, initial dust content of the flow rate of 400 mg / m at various forms of the fairing 7, sections of blades 9 and taper of the constriction 4 at all other optimal values.

Dependence of the integral (numerator) and fractional (denominator) effectality /; cleanings from the shape and location of the water-breaker in the device for screw constricting and cutting 9 and 40 °, the ratio d i.dc V 1,5: 2 is given in item 1. The dependence of the integral (numerator) -. fractional (denominator) efficiency of cleaning from the shape of the blades 9 pЈ.and the optimal shape and location of the fairing, and - 40 °, respect

u, d2 D 1: 1,5: 2 are given in table.2.

J-dependence of the integral (numerator) l fractional (denominator) cleaning efficiency of the initial part of the inlet pipe Kd from the taper and the ratio di: d2: D

with optimal shape and location

obtekzteg. blades 9 are shown in table 3.

. -3 that at optimal

blades 7, the section of the blades 9 and

Taper 4 taper cleaning efficiency of the icon air from dust in the proposed device reaches 99.8% (fractional 62.3%).

The use of the device ensures high efficiency of cleaning air from dust from the ventilation air, saves production space for a blessing; The topic is that you directly embed the F fanning system and the hot air system practically with the air duct element.

Claims (1)

Claims of the Invention Air purification device, containing an air inlet, inlet air inlet; outlet air diffuser inlet; g; air inlet air, placed oppo. drainage pipes of the Ж 1Јsk outlet, a foam hygrozerator, external and internal oncavity cavities with separate devices made in Yide for “fucivettley, subtracting from that. in order to increase the efficiency of cleaning air from dust, it is provided with a hollow parabioid fairing coaxially installed in the internal contact cavity communicated with the outlet nozzle, a float with a damper i -th partition installed with the ability to regulate the flow area of the drainage tubes, In this case, the spinners have one direction, the blades of the first spinner along the gas are hollow with a reduction in the flow area, communicated by a large inlet section with the outer contact cavity, s smaller - with a cavity of a fodder and attached tangentially to the last. Table table 2 ten eleven Table 3 YU / eleven