UA20786U - Cyclone with horizontal separator - Google Patents

Abstract

A cyclone with horizontal separator contains a cylindrical housing with a cover, concentrically fixed internal pipe, a tangential inlet duct installed with inclination relative to the generatrix of housing, an axial outlet branch pipe located in the cover of housing and installed vertically, and a bunker for collection of collected dust. The internal pipe is made in the form of louvered separator, height of which is equal to the height of the housing of apparatus. The branch pipe of outlet of dust is located tangentially.

Description

Description of the invention

A useful model refers to devices using swirling eddy currents, in particular, with a constant 2-axis direction of the eddy current, which can be used to clean dust and gas flows in various industries.

The famous cyclone (author's certificate of the USSR Mo1456195 A7T MKI VO 1 D 45/12 01 Bull. 5 dated 7.02.89.4), which contains a cylindrical body with a lid, a concentric fixed inner pipe, a tangential inlet pipe installed with an inclination relative to the generating body, an axial outlet a nozzle located in the cover 70 of the body and installed vertically and a hopper for collecting captured dust.

But in such a cyclone, according to the principle of operation and the location of the inlet and outlet nozzles, there is a change in the axial direction of the flow from downward to upward, as a result of which it has significant hydraulic resistance, there is a radial flow and turbulence of the flow at the outlet of the cyclone, which reduces its efficiency work 19 The basis of a useful model is the task of creating a cyclone in which a new design and mutual arrangement of structural elements would ensure an unchanged axial direction of the dust and gas flow, which would make it possible to increase the efficiency of cleaning and reduce hydraulic resistance.

The task is solved by the fact that a cyclone with a horizontal compartment, which contains a cylindrical body with a lid, a concentric fixed inner pipe, a tangential inlet nozzle, installed with an inclination relative to the generating body, an axial outlet nozzle, located in the lid of the body and installed vertically, and a hopper for collecting the captured of dust, according to a useful model, the inner pipe is made in the form of a louvered compartment, the height of which is equal to the height of the device body, and the dust outlet nozzle is placed tangentially and its height from the bottom of the device is 1/4 of the height of the device, and the bottom of the body has an inclination to the horizontal axis at angle 20-25 degrees. 29 This design of the cyclone provides an unchanged axial direction of the swirling flow, which allows to avoid the phenomenon of radial flow and flow turbulence at the exit of the device, as a result of which the degree of cleaning increases, while the hydraulic resistance of the cyclone decreases.

The work of the cyclone will be clear from the drawing and description.

Figure 1 shows a general view of the cyclone, a front view with the front wall removed. what

In Fig.2. - view along the arrow A. p

In Fig.3. - top view.

The cyclone consists of a housing 1, inside which a cylindrical louver is coaxially installed - a separator 2 with a louver 3, a tangential inlet nozzle 4, an axial outlet nozzle for purified air 5 and a dust outlet nozzle 6, a hopper 7, a housing cover 8, the bottom of the housing 9 and small bunker 10.

The cyclone works as follows. with

The dusty gas enters through the tangential pipe 4 into the space between the apparatus body 1 and the louvered compartment 2 and swirls. Under the action of centrifugal forces that arise during the rotation of the flow, dust particles are thrown to the inner part of the wall of the housing 1 and fall down it under the influence of weight. Since the inlet nozzle 4 is placed at an angle to the vertical, a formed dust and gas flow is created, which, moving along a circular trajectory, moves along the blind compartment 2 and the wall of the housing 1 from top to bottom. With layer-by-layer purified air due to the action of external forces after it enters the device tangentially through

And" nozzle 4 is divided into two dust and gas flows: the first along the wall of the housing 1, the second around the louver compartment 2. In the second flow, dust particles do not keep up with the movement of air, which sharply turns into the gaps between the louvers 3, reflects off them until will bounce off the wall of the housing 1 and will not be picked up by the first flow that moves to the dust outlet nozzle 6. o Since the inlet nozzle 4 is placed tangentially at an angle to the horizontal, a directed av | swirled dust and gas flow, which, after rotating in the housing of the apparatus 1 to a certain angle along a circular trajectory, moves along the axis of the housing and along the louvered compartment, and the dust is discharged from the apparatus through the tangential nozzle of the dust outlet 6 into the hopper 7. o 20 The flow that came through the slits between blinds From the compartment 2, it is removed from the device through the axial vertical pipe 5, located in the housing cover. There is a small hopper 10 for collecting finely dispersed dust particles that have already been released inside the louvered compartment 2.

To strengthen the effect of centrifugal forces and weight forces, the bottom of the body of the apparatus 9 is made at a certain angle of inclination to the horizontal axis, which corresponds to the angle of the natural bevel of the aerosols that move in this stream. 29 For the given design of the cyclone, the location of the dust outlet nozzle 6 and the angle of inclination of the bottom of the apparatus body 9 to the horizontal axis are very important issues.

Let's consider these indicators.

The data of the experimental determination of the location of the dust outlet nozzle are given in the table. 1 in (experimental dust - quartz sand, with a median diameter of 5.10 m.)

Air consumption, m/h Angle of rotation of the flow in the housing of the device, deg. 1 2 Z A b5 o i vyu771117711111vvo

As can be seen from Table 1, the location of the upper end of the dust outlet nozzle 6 after the dust-air flow makes a turn in the body of the apparatus 1 at an angle of 3602, i.e. at a distance of 1/4 from the height of the apparatus is optimal.

The research results are easy to explain. When the dust outlet nozzle 9 is located at a distance of 902 and 1802 after turning the flow in the housing 1 after entering the apparatus, the flow cleaned under the action of centrifugal forces will not have time to pass the second stage of cleaning when coming through the gaps between the blinds of compartment 2 and its larger part together with unseparated finely dispersed fractions will fall into the nozzle 6 and then into the hopper 7, where it will swirl the already separated dust and carry it back to the housing 1 with a secondary vortex. All this will lead to a decrease in the efficiency of the device. 7

When the dust outlet nozzle is located at a distance greater than the turn of the flow in the body of the apparatus according to 3602, most of the flow cleaned by external forces from coarse fractions will be removed through the blinds from compartment 2 into the outlet nozzle of the cleaned air and its remaining amount will not be enough to throw the cleaned dust into the dust outlet nozzle 6, which will reduce the efficiency of its operation. co

That is, the optimal location of the dust outlet nozzle is its placement after turning the flow in the body of the device by 3602, and this corresponds to a distance of 1/4 from the height of the device and is optimal, that is, at a distance of 1/4 H from the bottom of the dust collector (where H is the height of the body apparatus) o

The data of the experimental determination of the angle of inclination of the bottom of the housing 9 to the horizontal axis are given in Table 2

Зо (experimental dust - quartz sand, with a median diameter of 5.1072 m) сх and 70 то нн" aa In EE that s

I" 18 still vv at 2000 nn" aa and EE -1 svo

F zoso vve vv s vo

As can be seen from Table 2, the optimal angle of inclination of the bottom of the cyclone is 20-25 degrees to the horizontal axis, which can be easily explained. When reducing this angle, the force will not be enough to move the removed dust to the nozzle b5 of the Dust Outlet 6, because the natural shear angle for quartz sand lies within these limits. When the angle is increased, the dust will move faster and the air flow will not be able to capture it with itself in the outlet nozzle 6 and it will push through the gaps between the blinds with separator 2.

Claims (1)

The formula of the invention Cyclone with a horizontal compartment, containing a cylindrical body with a lid, a concentrically fixed inner pipe, a tangential inlet nozzle installed with an inclination relative to the body, an axial outlet nozzle located in the lid of the housing and installed vertically, and a hopper for collecting /o Captured dust, which differs in that the inner pipe is made in the form of a louvered compartment, the height of which is equal to the height of the device body, and the dust outlet nozzle is placed tangentially, and its height from the bottom of the device is 1/4 of the height of the device, and the bottom of the body is inclined to the horizontal axis of the device at angle 20-25, - (Se) (ee) cha "c) c - c i" name) ((c) -I ge" SHY 4) p. 60 b5