KR100592509B1 - Hybrid filter housing device - Google Patents

Abstract

The present invention relates to a combined filter dust collecting device comprising both a centrifugal force collector and a filter dust collector provided with a vertical inlet and a tangential inlet, the present invention for achieving the above object, the air inlet is supplied to the air inlet A filter dust collecting part including a filter to remove dust and discharge it to an air outlet; A normal centrifugal dust collection tank mounted on the lower side of the filter dust collecting unit; A dust storage tank integrally formed at an end of the centrifugal dust collector tank; A conventional inner cylinder mounted on a lower side of the filter dust collector in the centrifugal dust collector, and having a taper such that its cross-sectional area is gradually smaller than that of the air inlet side of the filter dust collector; A tangential inlet provided at a side of the centrifugal dust collector and supplying air in a tangential direction; And a vertical inlet provided to supply air in a direction perpendicular to the outer wall surface of the centrifugal dust collector.

Filter, Dust Collector

Description

Hybrid filter housing device

1 is a perspective view of a combined filter dust collecting device which is one embodiment of the present invention

2 is a cross-sectional view showing the mutual position of the vertical inlet and the tangential inlet in the centrifugal force precipitating unit

<Description of Symbols for Main Parts of Drawings>

1: vertical inlet

2: tangential inlet

3: inner tube

4: dust hopper

5: filter

6: air outlet

7: centrifugal collection part

8: filtration collection part

9: outlet valve

The present invention relates to a bag filter, and more particularly, to a combined filter bag including both the centrifugal force and the filter bag is provided with a vertical inlet and a tangential inlet.

Since the existing filter dust collector is composed of only the filter dust collector installed with the vertical inlet, most of the dust introduced into the dust collector through the vertical inlet reaches the filter surface and is attached. The dust that reaches the filter surface forms a dust layer which increases the pressure drop across the filter.

When the differential pressure due to the dust layer reaches a certain level, the dust layer must be removed from the filter surface for smooth operation of the device.

There are many methods of removing dust from the filter surface, but the most commonly used method of dust removal is to remove dust by back pulse jet in the downstream direction of the filter.

The greater the amount of dust supplied to the filter surface, the faster the growth rate of the dust layer adhering to the filter surface, and thus the more frequent the dedusting process to remove the dust layer from the filter surface, the more frequent the dedusting process. This causes a problem of shortening the life of the filter.

In order to solve the above problems, there is a centrifugal filtration device (Korean Patent Publication No. 10-1999-0075816) provided with a tangential inlet as a pre-applied device.

In the centrifugal filter, the coarse dusts of the introduced dusts are removed in advance by the centrifugal force dust collection and the remaining fine dusts are loaded into the filter, thereby reducing the dust load on the filter. The problem seems to be solved to some extent.

However, coarse dust particles among the dusts introduced into the tangential inlet are collected by the centrifugal force collector, and fine dust particles reach the filter, so that the inside of the filter media pores. Undesirable phenomenon that fine dust particles penetrate and attach until occurs.

Moreover, dust particles adhered to the pores of the filter medium are another factor of deteriorating the life of another filter because the dust is not removed from the filter by the dedusting process.

An object of the present invention devised to solve the above problems, the coarse dust particles are partially or not removed by centrifugal force dust collected by operating a combination of the vertical inlet and the tangential inlet installed in the centrifugal force dust collector. By controlling the laminated structure of the dust layer formed on the surface of the filter to reach the surface of the filter, it is possible to reduce the differential pressure rise rate by the dust layer and at the same time reduce the filter life due to the penetration of fine dust particles into the pores. To provide.

The present invention for achieving the above object, the filter dust collecting unit including a filter for receiving the air to the air inlet to remove the dust in the air to discharge to the air outlet; A normal centrifugal dust collection tank mounted on the lower side of the filter dust collecting unit; A dust storage tank integrally formed at an end of the centrifugal dust collector tank; A conventional inner cylinder mounted on a lower side of the filter dust collector in the centrifugal dust collector, and having a taper such that its cross-sectional area is gradually smaller than that of the air inlet side of the filter dust collector; A tangential inlet provided at a side of the centrifugal dust collector and supplying air in a tangential direction; And a vertical inlet provided to supply air in a direction perpendicular to the outer wall surface of the centrifugal dust collector.

The filter is characterized in that it comprises a fabric bag filter, a metal fiber bag filter, a metal sintered bag filter, or a ceramic candle filter.

The vertical inlet is characterized in that the rectangular duct or round tube.

The tangential inlet is characterized in that the inlet air is installed to turn along the inner wall of the centrifugal dust collector.

The tangential inlet may be a rectangular duct or a circular tube.

Hereinafter, the present invention will be described in detail through examples and drawings.

Figure 1 is a preferred embodiment of the combined filter dust collector coupled to the centrifugal force collector (7) provided with the vertical inlet (1) and the tangential inlet (2) according to the present invention, and the filter dust collector (8) including the filter (5) Is a perspective view schematically showing.

2 is a cross-sectional view showing how the vertical inlet 1 and the tangential inlet 2 are installed in the centrifugal force precipitating unit 7 in FIG. 1.

The filter 5 is equipped with a filter 5, the upper end of the filter 5 is formed with an air outlet 6 through which the filtered air out.

The filter 5 may be equipped with a plurality of filter bags, a fabric bag filter, a metal fiber bag filter, a metal sintered bag filter, or a ceramic candle filter. filter) and the like can be used in combination.

The centrifugal force collector 7 is integrally installed on the lower side of the filter dust collector 8.

The centrifugal force dust collecting part 7 is conventional, and in order for air to flow inside, it is preferable that the cross section is circular. Therefore, it is preferable that the cross section of the filter dust collector 8 integrally formed with the centrifugal force dust collector 7 is also circular.

At one end of the centrifugal force dust collecting part 7 is provided with a dust storage tank (4). The dust storage tank 4 is preferably provided with a discharge valve (9) at the bottom, so that when the dust is accumulated more than a predetermined amount to remove the dust accumulated in the dust storage tank 4 from the centrifugal force collector (7).

The shape of the dust storage tank 7 is not limited, and in this embodiment, the shape of the dust is taken as a cone shape.

An inner cylinder 3 is formed inside the centrifugal force dust collecting part 7 on the lower side of the filter dust collecting part 8.

The shape of the inner cylinder 3 is generally tapered, the cross section of which decreases away from the lower side of the filter dust collector 8, and the height of the inner cylinder 3 is 0.1 to 0.5 times the height of the centrifugal dust collector 7.

The centrifugal force dust collecting part 7 is provided with a vertical inlet port 1 and a tangential inlet port 2.

The vertical inlet 1 is vertically installed on the outer wall surface of the centrifugal dust collector 7 to supply dispersion containing air into the dust collector.

The tangential inlet 2 is provided in contact with the centrifugal force precipitator 7 to circulate air in the centrifugal force precipitator 7 with air containing dust particles.

The vertical inlet 1 and the tangential inlet 2 may be rectangular ducts or circular tubes.

In addition, the tangential inlet (2) is preferably installed so that the air flowing in contact with the inner wall of the centrifugal force collector (7). This is because dust in the air can be removed by colliding with the inner wall of the centrifugal force collector 7 by centrifugal force.

Embodiments of the invention may be modified in many different forms and should not be construed as limited to the scope of the invention by the embodiments described below. Embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art. Accordingly, the shape and the like of the elements in the drawings are exaggerated to emphasize a more clear description, and the elements denoted by the same reference numerals on the drawings means the same elements.

Hereinafter, the operation relationship of the present invention will be described in detail.

The dust flowing into the tangential inlet 2 is first removed by coarse dust particles attached to the inner wall surface of the centrifugal force precipitator 7 due to the centrifugal force caused by the circulating flow formed in the centrifugal force precipitator 7. Then, it passes through the inner cylinder (3) and flows into the filter bag (8) of the upper portion.

Since the dust particles introduced into the filter dust collector 8 have many particles having a fine particle size distribution, when the pores on the surface of the filter 5 are exposed, they penetrate into the pores and adhere to the pores. Blocking may occur.

However, when the dust layer consisting of coarse dust particles or fine dust particles or mixed particles of the particles is formed on the surface of the filter 5 in advance, the fine dust particles are formed on the surface of the dust layer or the dust layer previously formed. Since the adhesion is removed from the internal pores, the phenomenon that the filter 5 penetrates to the pores inside the filter medium is reduced.

Pore penetration and adhesion of fine dust particles inside the filter 5 are reduced as the thickness of the dust layer increases.

As a result, the dust is introduced through the vertical inlet 1 to reduce the penetration of fine dust particles into the pores of the filter 5, thereby improving the dust removal efficiency of the filter, and also through the tangential inlet 2. The flow rate of the differential pressure is reduced by reducing the load of dust reaching the filter 5 by reducing the growth rate of the dust layer, and as a result, the frequency of exhaustion of the filter is reduced, thereby extending the life of the filter. Can be.

When the filter in the bag filter is newly installed or immediately after exhaustion is performed, the filter surface is in a state where pores are exposed to the surface, so when fine dust particles reach the filter surface, they penetrate into the pores and adhere to the inside of the pores. Is easy.

Therefore, in this case, it is desirable to allow dust to enter the vertical inlet so that most of the incoming particles reach the filter surface to reduce the pore blockage caused by the fine dust particles.

Therefore, the present inventors operate the combined filter dust collector as follows.

First, an initial state in which dust is not attached to the filter 5 is set. This initial state can be achieved by replacement of the filter 5 or by the back pulse jet described above.

In the initial state as described above, since the pores on the surface of the filter 5 are exposed, dust is first introduced through the vertical inlet 1 so that coarse dust can reach the filter surface.

As such, when a dust layer is formed on the surface of the filter with coarse dust particles and fine dust particles mixed, the pores on the surface of the filter 5 are not directly exposed, and then through the tangential inlet 2 Inflow.

Coarse dust particles among the dusts introduced into the tangential inlet (2) are centrifugal force collected by the centrifugal force and fine dust particles are introduced into the filter dust collector (8).

Even when the fine dust particles have reached the filter 5, they cannot be penetrated to the pores of the filter medium by the dust layer, which has been previously attached, and are collected and removed by the dust layer. I can protect it.

Then, the same process is repeated.

In the above process, dust is accumulated in the dust storage tank 4, and when a predetermined amount is filled, the discharge valve 9 formed in the lower portion of the dust storage tank 4 is opened to remove dust in the dust storage tank 4.

Summarizing the above process, after setting the filter to the initial state, the dust is introduced through the vertical inlet (1), and once a suitable dust layer is formed on the surface of the filter (5), dust is collected through the tangential inlet (2). By flowing in, the dust load to the filter can be reduced, and the pore clogging of the filter from fine dust particles can also be suppressed.

As mentioned above, although this invention was demonstrated in detail through the specific Example, this invention is not limited to this, It is clear that the deformation | transformation and improvement are possible by the person of ordinary skill in the art within the technical idea of this invention.

 According to the present invention described above it is possible to reduce the dust load to the filter from the dust inlet through the tangential inlet installed in the centrifugal force collector, and to reduce the adhesion of fine dust particles into the pores of the filter from the dust inlet through the vertical inlet, While minimizing the pore blockage, it is possible to reduce the pressure load caused by the dust of the filter and to improve the dust removal efficiency.

As a result, it is possible to reduce the running cost required for dust removal of the filter provided in the combined filter dust collector and to extend the life of the filter.

Claims (5)

A filter dust collecting part including a filter which receives air from the air inlet and removes dust in the air and discharges the air to the air outlet; A normal centrifugal dust collection tank mounted on the lower side of the filter dust collecting unit; A dust storage tank integrally formed at an end of the centrifugal dust collector tank; A conventional inner cylinder mounted on a lower side of the filter dust collector in the centrifugal dust collector, and having a taper such that its cross-sectional area is gradually smaller than that of the air inlet side of the filter dust collector; A tangential inlet provided at a side of the centrifugal dust collector and supplying air in a tangential direction; And Combination type filter dust collecting device including a vertical inlet is installed to supply air in a direction perpendicular to the outer wall surface of the centrifugal dust collector. The filter of claim 1, wherein the filter comprises a fabric bag filter, a metal fiber bag filter, a metal sintered bag filter, or a ceramic candle filter. Combination type filter dust collecting device, characterized in that. The combined bag filter according to claim 1, wherein the vertical inlet is a rectangular duct or a circular tube. 2. The combined bag filter according to claim 1, wherein the tangential inlet is installed so that the incoming air is pivoted along the inner wall of the centrifugal bag. The combined bag filter according to claim 1, wherein the tangential inlet is a rectangular duct or a circular tube.

Images