KR20140002948U - Axial flow type cyclone dust collector - Google Patents

Abstract

The present invention relates to an axial-flow cyclone dust collecting apparatus, and more particularly, to an axial-flow cyclone dust collecting apparatus, which includes a line member cylinder portion in which a hammer gas is pivotally moved, a hammer gas inlet pipe and a exhaust gas discharging pipe arranged along axes at front and rear ends of the linear member cylinder portion, And a dust collection port provided in a rear end region of the tubular portion for guiding the discharge of the centrifugal dust, wherein an inner diameter of the line member cylindrical portion is within a range of 1.5 to 1.6 times the inner diameter of the inflow pipe, And a guide member which is disposed between the inlet pipe and the line member cylinder and which provides a centrifugal force to the impregnated gas introduced into the inlet pipe and starts at a leading angle of 0 to 5 degrees with respect to the axis of the turning cylinder, And a plurality of guide vanes arranged radially with a vane angle varying at an ejection angle of 75 ° to 80 °. Thus, there is provided a dust collecting apparatus in which the mutual geometrical relations of the constituent parts are optimized, the static pressure loss is small, and the dust collecting efficiency is improved.

Description

AXIAL FLOW TYPE CYCLONE DUST COLLECTOR [0002]

The present invention relates to an axial flow cyclone dust collector.

In general, an axial-flow type centrifugal force collecting device is a device for introducing exhaust gas in the axial direction and exhausting exhaust gas in the axial direction. The exhaust gas introduced into the dust collecting device through the inlet pipe passes through a guide vane installed at the inlet And the dust separated and separated by the centrifugal force of the swirling flow moves to the rear end side along the cylindrical wall. The dust is discharged through the dust outlet located at the lower end of the dust collecting apparatus and is collected in the closed dust collection bag, The exhaust gas discharged through the exhaust gas discharge pipe installed at the rear end of the dust collecting apparatus in the same direction as the central axis of the dust collecting apparatus.

However, such a conventional axial-flow centrifugal force collector has a problem in that the dust collection efficiency is low due to a large static pressure loss and the like

Accordingly, an object of the present invention is to provide a dust collecting apparatus with a small static pressure loss and improved dust collecting efficiency.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an exhaust gas purifying apparatus, comprising: a line member cylinder portion in which a propellant gas is pivotally moved; an exhaust gas inlet pipe and a exhaust gas exhaust pipe arranged along an axial line on the front and rear ends of the line member cylinder portion; And a dust collection port for guiding the discharge of the centrifugal dust, wherein the inner diameter of the line member cylindrical portion is in the range of 1.5 to 1.6 times the inner diameter of the inlet pipe, And a guide tube disposed between the member cylinders for providing a turning centrifugal force to the casting gas introduced into the inlet tube and starting at a leading angle of from 0 ° to 5 ° with respect to the axis of the turning cylinder and from 75 ° to 80 ° And a plurality of guide vanes arranged radially with a vane angle varying with the discharge angle of the vanes.

In this case, when the vertex of the inlet pipe and the guiding vane further include a conical diffusion portion toward the inlet pipe, the dust collecting efficiency can be increased by imparting the diffusing force to the outside of the inlet gas in the radial direction, Is 1.4 to 1.6 times the inner diameter of the inflow pipe, it is preferable to laminarly flow the inflowing gas without excessively increasing the length of the entire apparatus.

Preferably, the length of the line member cylindrical portion is 1.5 to 2.0 times the inner diameter of the inflow pipe. If the length of the line member cylindrical portion is too short as compared with the diameter of the inlet pipe, the swirling gas can not secure sufficient swinging distance and centrifugal force, and if it is too long, the swirling kinetic energy may be lowered and the dust collection efficiency may deteriorate.

According to the configuration of the present invention as described above, a dust collecting apparatus is provided in which the mutual geometrical relations of the respective components are optimized, the static pressure loss is small, and the dust collecting efficiency is improved.

1 and 2 are a vertical sectional view and a partial incision view of an axial flow type cyclone dust collecting apparatus according to an embodiment of the present invention;
Figs. 3 (a) and 3 (b) are a sectional view and a perspective view of the guide wing.
4 is a graph showing changes in dust collection efficiency and static pressure loss with respect to the inlet pipe inner diameter with respect to the cost in the line member tube.
5 is a graph showing changes in dust collecting efficiency and static pressure loss according to the discharge angle of the guide vane.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a longitudinal sectional view of an axial flow type cyclone dust collecting apparatus according to an embodiment of the present invention . As shown in Fig. 1, the axial-flow cyclone dust collecting apparatus has a main body 10 and a guide vane 20 accommodated in the main body 10. As shown in Fig.

The main body 10 is provided with a line member cylinder 11 to which a propelling gas is pivotally moved, a smoldering gas inlet pipe 12 and a exhaust gas discharging pipe 12 disposed along the axis C at the front and rear ends of the line member cylinder 11 13), and a dust collecting port (14) provided in the rear end region of the line member cylinder section (11) for guiding the discharge of centrifugal dust.

The guide vane 20 is disposed in the main body 10 between the inclined gas inlet pipe 12 and the line member cylinder 11 to provide swirl centrifugal force to the inclined gas introduced into the inlet pipe 12.

Since the turbulent gas introduced into the axial flow type cyclone dust collecting apparatus has a flow rate of about 7.0 to 9.0 m / sec and is bent several times until it reaches the inlet pipe 12, or passes through a pipe having various curvatures, The turbulent gas arriving at the evaporator 12 is in a turbulent or eddy state. When the turbulent flow or the swirling gas in the vortex state collides with the guide vane 20 as it is, the vortex flow generated in the guide vane 20 is biased to a specific azimuth angle position, And the efficiency of dust collection is deteriorated.

However, as described above, when the turbulent flow or turbulent flow enters the turbulent flow or vortex state, the flow of the turbulent gas into the inlet pipe 12 having a sufficient linear length changes into a laminar flow so that the velocity and density become uniform. However, The dust collecting efficiency deteriorates. The length of the inflow pipe 12 obtained through various embodiments is preferably 1.4 to 1.6 times the inner diameter of the inflow pipe.

A conical diffusion unit 21 is installed at the rear of the inflow pipe 12 with its vertex pointing toward the inflow pipe 12 and coupled to the front end of the guide vane 20 . The impinging gas that has passed through the inflow pipe 12 is radially diffused toward the outer wall along the inclined surface at the apex of the conical diffusion unit 21 and introduced into the guiding vane 20.

A plurality of the guide vanes 20 are radially arranged and start with a gentle inlet angle alpha of 0 DEG to 5 DEG at the front end with respect to the axis C as shown in Fig. (?) Of 75 DEG to 80 DEG at the rear end of the discharge port (20).

5 is a graph showing the variation of the dust collecting efficiency and the static pressure loss with respect to various discharge angles of the guide vane 20. As shown in the graph, when the discharge angle beta is in the range of 75 ° to 80 °, The loss is minimized to about 1 mmAq and the dust collecting efficiency is maintained at 90% or more.

The swept gas passing through the guide vane 20 is moved to the rear end while swirling in the line member cylinder 11. [ In order for the dust particles in the swirling dust to be centrifugally separated from the swirling flow, the swirling velocity and the swirling distance (the number of revolutions) must be ensured. However, the swirling velocity and the swirling distance may be different from each other when the flow velocity passing through the inflow pipe 12 is constant It influences the dust collecting efficiency sensitively depending on the relative sizes of the inlet pipe inner diameter D1 and the line member inner diameter D2.

4 is a graph showing changes in dust collection efficiency and static pressure loss with respect to the inner diameter D2 of the line member tube with respect to the inflow pipe inner diameter D1. As shown in the graph, when the static pressure loss is minimized and the dust collection efficiency is 80 The inner diameter D2 of the line member tubular member which is maintained at more than 1% shows good results in the range of 1.4 to 1.7 times the relative diameter of the inlet tube inner diameter D1 and shows the best result in the range of 1.5 to 1.6 times .

In addition, the length of the line member cylinder L2 is set such that the swirling distance of the swirling flow, that is, the number of revolutions, (14). As a result of various experiments on the number of revolutions of the swirling flow in the line member cylinder 12, it is most preferable that the number of revolutions is 1.1 to 1.5 rotations. In order to secure the number of revolutions of 1.1 to 1.5, ) Is made to be 1.5 to 2.0 times the inner diameter (D1) of the inflow pipe.

The dust separated and separated from the swirling flow by centrifugal force is swirled on the inner side wall of the line member cylinder portion 11 and flows through the dust collection port 14 provided at the rear end of the line member cylinder portion 11, The dust collected in the dust collecting bag 15 is emptied by hand or the dust collecting bag 15 is replaced and removed.

The dust collecting mouth 14 has a rectangular shape in which two opposite sides are parallel to the tangential direction and the other two opposite sides are provided at the rear end of the line member cylinder 11 in parallel with the axis C. The length of one side of the dust collector 14 is set to be 50 to 60% of the inner diameter D2 of the line member cylinder. As a result of the experiment, it was found that the length of one side of the dust collector 14 was made to be 50 to 60% of the inner diameter D2 of the line member cylinder. When instantaneous high- It is easy to move to the dust collecting bag 15 up to the dust collecting bag 15.

As described above, the dust particles introduced into the dust collecting device are separated and separated by the centrifugal force of the line member sleeve 11, and the separated dust particles are collected and removed through the dust collecting port 14 to be exhausted. The exhaust gas is discharged to the outside through the exhaust gas discharge pipe (13).

The exhaust gas discharge pipe 13 is installed at the rear end of the axis line C of the line member cylinder 11 along the axis C. The exhaust gas discharge pipe 13 is connected to the line member cylinder 11 through the dust collector 14, . At this time, when the length L4 of the outlet pipe of the exhaust gas is shorter than the length L3 of the sides of the dust collecting container, the reversing angle of the spiral vortical flow passing through the exhaust gas discharge pipe 13 is reversed, Dust is accumulated on the front end of the exhaust gas discharge pipe 13 and the entrance of the dust collecting opening 14 when the length L4 of the discharge pipe is longer than the length L3 of the dust collecting container do.

Therefore, when the inner length L4 of the exhaust gas discharged from the rotary cylinder 10 is 18-22% longer than the length L3 of the dust collector, The deposition of the entrance of the dust collecting port 14 was minimized without interfering with the reversal of the swirling flow.

10: main body 11:
12: inlet pipe 13: exhaust gas outlet pipe
14: Dust Collector 15: Dust Collecting Bag
20: guide wing 21: conical diffusion part
α: Retraction angle β: Discharge angle
C: Axis
D1: Inlet pipe inner diameter D2:
L1: inlet pipe length L2: line member tube length
L3: Length of one side of the dust collecting compartment L4: Inner length of the discharge pipe

Claims (3)

In a condensing cyclone dust collector,
A dust gas inlet pipe and a dust exhaust gas outlet pipe arranged along the axial line on the front and rear ends of the line member cylinder, and a discharge port provided in the rear end region of the line member cylinder to discharge the centrifugal dust, A main body having a dust collecting port for guiding and having an inside diameter of the line member tube within a range of 1.5 to 1.6 times the inside diameter of the inflow pipe;
And an inlet angle of 0 to 5 degrees at the front end with respect to an axis of the swivel cylinder, wherein the angle of inclination And a plurality of guide vanes arranged radially with a vane angle varying at an outward angle of from 75 to 80 at the rear end,
Wherein the length of the cylindrical portion is 1.5 to 2.0 times the inner diameter of the inlet pipe. The method according to claim 1,
Further comprising a conical diffuser between the inlet tube and the guide vane to direct a vertex toward the inlet tube. The method according to claim 1,
Wherein the length of the exhaust gas discharge pipe located in the inside of the line member cylinder section extends beyond the area of the dust collector.

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