SU1111826A1 - Cyclone - Google Patents

Abstract

A CYCLONE containing a cylindrical conical body, inlet and outlet nozzles, an exhaust pipe with an umbrella made up of a hollow conical cover, installed with a large base downwards from the upper edge of the exhaust pipe, characterized in that in order to increase the efficiency of dust removal, it is equipped pipeline installed between the umbrella and the discharge opening. i (L 00 Is9

Description

The invention relates to devices for centrifugal gas cleaning from dust and can be used in cyclones of ventilation systems and air conditioning.

A cylindroconical cyclone with an umbrella is known, which is used for the additional deposition of dust 1.

The umbrella has a hollow conical insert, a cover and a silo bin.

However, due to the intensive mixing of the outlet stream and the absence of suction of dust, the separated particles are re-entrained and carried away with the purified gas, which reduces the general efficiency of dust collection.

Also known is a cyclone umbrella, made in the form of a hollow conical cap, mounted with a large base down on the exhaust pipe at a distance from its upper edge 2.

The fifth umbrella has a low power efficiency), since the dust accumulated at the top of the cone is not removed from the separation zone. The aim of the invention is to incorporate an effect ((dust removal equipment).

The goal is achieved by the fact that a cyclone containing a cylindrical body, inlet and outlet pipes, an exhaust pipe with an umbrella made in the form of a hollow conical cap, is installed with a large base downwards from the upper edge of the exhaust pipe provided with a pipeline installed between the volume zones .

FIG. 1 shows the proposed TS1KLON, longitudinal section; in fig. 2 — node I in FIG. one; in fig. 3 - cut. in fig. 2

The cyclone contains a cylindrical housing 1, an inlet 2 and a discharge pipe 3, an exhaust pipe 4, a bunker 5, a pipeline 6.

Pipeline 6 is installed between the umbrella 7 and discharge pipe 3. The lower end of the pipeline can; be provided with a bell 8 with blades 9.

The cyclone works as follows. The flow of dusty air entering tangentially through the nozzle 2 is twisted, which leads to the appearance of a zone of reduced pressure in the center of the cyclone (on the vertical axis). The bell 8 of the pipeline 6 is located on the section where the pressure drop is especially noticeable, since the velocity of the dust-air flow there has the maximum value. In this part of the cyclone, dust particles are separated from the air. The coarse fractions are directed to F.i hopper 5, as indicated by the arrow in the drawing, and small quantities are carried away by air flow into pipe 4. Exit from pipe 4, dusty notes are guided under umbrella 7, and due to the impact of the jet, a pressure zone is formed under the umbrella. The dust concentrate from the pressure zone through the pipeline b is directed to the pressure drop zone, where the dust is directed through the socket 8 to the inner walls of the cyclone and then to the hopper 5.

When determining the effectiveness of a pre-ordered device, it was found

5 that in the conical part of the cyclone there is a vacuum occurring in the center of the rotating flow, and on the release from the cyclone, under its umbrella - pressure. From the pressure zone to the rarefaction zone, a dusty note moves along the pipeline dispersed in the center of the cisun. Dust from this pipeline by inertia flies into the bunker, where it precipitates.

Performance of the cyclone 20 flow rate at the inlet 19 m / s;

5 inlet pressure inside the nozzle is 80 kg / Mf and in the exit from the cyclone 12 section in the lower part of the cyclone, in the center of the rotating flow 5 kg / m; air flow rate in the pipeline 7 m / s; pipeline flow direction -

0 from top to bottom; the dust content of the air in the inlet port 960 and at the exit of the cyclone 47 mg / m; 1 cleaning ratio of 95 ° / o; type of dust - chopped onion peel.

On the same model, with all parameters being equal, but without a pipeline, I supply the Hiero dust-air mixture to the lower part of the cone; the dust content of the cyclone output from the cyclone was 120 mg / m, and the cleaning coefficient was 87.5%.

At present, most of the cyclones used to clean the air emitted to the outside are equipped with umbrellas designed to prevent precipitation from getting inside.

3 cyclone shells. In dry weather, these umbrellas are not needed, since they only create additional hydraulic resistance. The proposed umbrella not only prevents atmospheric precipitation

It is also the second stage of cleaning the cyclone, preventing dust from escaping into the atmosphere.

FIG.

Claims (1)

A CYCLONE containing a cylindrical-conical body, inlet and discharge pipes, an exhaust pipe with an umbrella made in the form of a hollow conical cover mounted with a large base downward at a distance from the upper edge of the exhaust pipe, characterized in that, in order to increase the efficiency of dust collection, it is provided with a pipe, installed between the umbrella and the discharge opening. 11ί1826