RU1787501C - Device for separating ventilation air from dust - Google Patents

Abstract

Usage: water dedusting and ventilation in various industries where wet methods of purification of air from dust are applicable. SUMMARY OF THE INVENTION: the device body 1 is cylindrical and has a choked muffed end through which a supply pipe 4 is connected, connected to the free end of the perforated shell 5, and a discharge pipe 8 in the plane of symmetry of the device is connected to the cylindrical surface of this pipe 8. 2 il.

Description

Purified air

(L

WITH

FIG. 7

The invention relates to the field of water dedusting and ventilation technology and can be used in various industries where wet methods for cleaning dust from air are applicable.

A device for cleaning gases from gaseous and solid impurities is also known, which is a perforated dead-end dust suppression chamber, outlet and inlet pipes, sprinkler, vacuum system and sludge collector.

The device, which is not so technical in terms of technical essence and achieved, is a device for cleaning ventilation air from dust, including a cylindrical housing for dust suppression with inlet and outlet pipes and with plugged ends, a perforated shell, in the form of a semi-hyperboloid of rotation, a sprinkler, swirler, sludge collector (2).

However, the known design, providing high efficiency of the dust cleaning process, has a sufficiently large number of elements and assemblies difficult to manufacture,

The purpose of the invention is to simplify the design of the device while maintaining the efficiency and economy of the dust cleaning process.

This goal is achieved in that the cylindrical body has a beveled muffled cut through which a supply pipe is connected, connected to the free end of the perforated shell, and a pipe in the plane of symmetry of the device is connected to the cylindrical surface of the body from its larger generatrix so that the plane is oblique a section of the body is ka-. significant to the side surface of this pipe.

Figure 1 shows a General view of the device from the side with a local section; figure 2 is also a top view.

A device for cleaning ventilation air from dust is a cylindrical housing 1 of a dust suppression chamber, muffled from one end by a cover 2, perpendicular to the axis of the device, and, on the other hand, the end face has an oblique cut and muffled by a cover 3. A supply is passed through the cover 3 coaxially to the housing 1 the connecting pipe 4. To the end of the pipe 4 located in the cavity of the housing 1, a perforated shell 5 made in the form of a semi-hyperboloid of rotation is connected with a smaller base. A larger base of the shell is attached to the housing 1. In the cavity formed by the inner surface of the housing 1 and the outer perforated shell 5 with the pipe 4, a swirler 6 is installed, made in the form of radial twisted blades. Inside

sprinkler 4 is placed along its axis in a direction to the supplied dusty air stream; sprinkler 7 is placed.

0 pipe 8 so that the plane of the oblique cut of the end face of the housing 1 is tangent to the side surface of the pipe 8. In the lower part of the housing 1 has a receiving funnel 9 connected to the lowering pipe. 10. Slag 5. The collector 11 is installed under the pipe 10 and, together with it, acts as a water trap, while simultaneously allowing the formation of sludge.

The device operates as follows. The dusty air stream passing through the inlet pipe 4 is sprinkled irregularly with dispersed liquid from the sprinkler 7. In this case, the interaction of dust and liquid aerosols 5 is most pronounced in the area of the perforated shell 5. Basically, the cleaned air stream passes through perforation shell 5, is directed to the swirl b, in the zone of which there is a process of residual dust cleaning. After that, the dust-free air stream is removed from the device through the outlet pipe 8, and formed during the hydrodynamic cleaning

5 sludge through the funnel 9 and the lowering pipe 10. From the pipe 10, the sludge enters the sludge collector 11.

In laboratory tests of the prototype and device, the cost-effectiveness and efficiency of the dust cleaning process were determined. Under the efficiency of the dust cleaning process understand the energy efficiency of the process, that is, the ratio of energy directly spent on the process

5 dust cleaning device, to the total energy supplied to the dust cleaning device, expressed as a percentage. At the same time, they recorded:

- the speed of the dusty air flow at the 0 entrance to the device is 10.5 m / s;

- respectively, the diameters of the housing of the dust suppression chamber, inlet and outlet pipes - 900; 400; 500 mm;

- the length of the dust suppression chamber along the axis 5 of the device is 3600 mm;

- type of nozzle - CF 5.0 - 75;

- pressure of the irrigating liquid - 0.75 MPa;

- the concentration of dust in the air entering the devices is 1000 mg / m.

As a result of the tests, it was found that both devices under the given conditions have the same dust cleaning efficiency equal to 98.5% and the same energy efficiency (energy-intensity index) equal to 0.92%.

Thus, the device achieved a significant simplification of the design by eliminating the cylindrical part with fairings and part of the body in the form of an elliptical paraboloid of revolution.

Claims (1)

The claims A device for cleaning ventilation air from dust, comprising a cylindrical housing of a dust suppression chamber with an end supply and outlet path 5 cuttings and with muffled ends, a perforated shell made in the form of a semi-hyperboloid of rotation and attached on one side to the body, an irrigator, swirler, sludge collector, characterized in that, in order to simplify the design, the end face of the body at the point of connection of the inlet pipe is beveled, when this is the plane of the oblique cut tangent to the side surface of the outlet pipe connected to the housing from the side of the larger surface forming it with the axis in the plane of symmetry of the housing, and onets said nozzle is connected to the free end of the perforated shroud. FIG. 2