KR20090016184A

KR20090016184A - Dust filtering collector with a duster

Info

Publication number: KR20090016184A
Application number: KR1020070080650A
Authority: KR
Inventors: 서정민; 정문섭
Original assignee: 부산대학교 산학협력단
Priority date: 2007-08-10
Filing date: 2007-08-10
Publication date: 2009-02-13

Abstract

A dust filtering collector with a deduster is provided to minimize a pressure loss generated in the filter cloth, extend life of the filter cloth, and reduce power consumption by uniformly spraying compressed air onto the entire filter cloth, thereby easily removing dust adhered to a filter cloth. In a dust filtering collector comprising an inlet(10), a filter cloth(20), a blowpipe(30) having a spray pipe(32) formed on a bottom part thereof, and an outlet(40), a dust filtering collector with a deduster is characterized in that the spray pipe formed on the blowpipe is extended and inserted into the filter cloth to uniformly spray compressed air onto the entire filter cloth, the spray pipe has a plurality of spray holes formed in an outer surface thereof such that diameters of the spray holes gradually increase as it goes from an upper side of the spray pipe to a lower side of the spray pipe, and the inlet has a plurality of partitions(12) formed therein in a way that the partitions are vertically alternated to primarily filter large particles contained in dust flowing into the inlet.

Description

DUST FILTERING COLLECTOR WITH A DUSTER}

The present invention relates to a filter dust collector having a dust removal device, and more particularly, a filter dust collector equipped with a dust collector that can remove the dust attached to the filter cloth by the compressed air supplied through the blow pipe is injected through the injection pipe It is about.

Dust collectors are widely used in various fields such as steel, petrochemical, cement, power generation industry, and waste incineration facilities. As the regulations on pollutants are strengthened, the field requiring installation is gradually increasing.

In general, a large amount of particulate contaminants (hereinafter referred to as 'dust') is discharged from the places where various pollutants are discharged, and a filter bag including a filter bag is essentially installed to remove the pollutants. There is also a need for a dust removal device that periodically removes dust attached to it.

1 is a view showing a dust collecting device of a conventional filter dust collector has been filed by the applicant through the 'dust removal device of the filter dust collector' (hereinafter, 'prior art') of the Patent Publication No. 10-2006-0101108.

In more detail with respect to the prior art, the various dust contained in the outside air introduced through the inlet (1) is filtered by the filter cloth (5) in which a predetermined size of snow is formed and thus the clean outside air filtered out the outlet (2) Exit through

At this time, when the dust collector is operated for a long time, the dust is attached to the eyes of the filter cloth 5, causing clogging.

In order to solve this problem, a large amount of compressed air periodically supplied from the outside moves through the blow pipe 3 and is injected through the injection pipe 4, and the dust attached to the filter cloth 5 at that pressure is removed. Can be.

However, in the case described above, the part of the filter cloth (5) adjacent to the injection pipe (4) is well removed dust by the injected compressed air, but the farther away from the injection pipe (4), that is, of the filter cloth (5) As the pressure goes down, the pressure of the compressed air decreases so that dust is hardly removed. In other words, it is not possible to expect a uniform dust removal effect over the entire filter cloth (5).

Therefore, a pressure loss occurs on the filter cloth 5, so that the filter bag is heavily loaded and there is a problem that the filter cloth 5 needs to be replaced frequently.

In addition, a variety of particle sizes may be introduced into the dust, but when a relatively large particle is attached to the filter cloth 5, the flow of air flowing in the bag filter is not only disturbed, but also the inlet 1 and the outlet 2. Since the pressure difference increases faster between), the filter bag is subjected to a large load, thereby increasing power consumption and shortening the life of the filter cloth 5.

The present invention has been made to solve the problems as described above, an object of the present invention is to provide a bag filter equipped with a dust collector that can be removed dust uniformly and easily throughout the filter cloth.

Still another object is to provide a filter dust collector equipped with a dust collecting device that ensures a smooth dust collecting performance by reducing the pressure difference between the inlet and the outlet by primarily filtering relatively large particles of dust.

The present invention for achieving the above object is to inject the compressed air generated from the outside through the inlet for the inlet air containing the dust is introduced and the filter cloth for filtering the dust contained in the outside air and the injection pipe formed in the lower In the filter bag including a blow pipe for exhausting dust attached to the filter cloth and an outlet through which the outside air filtered through the filter cloth is discharged, the injection pipe formed in the blow pipe is such that the compressed air is evenly sprayed throughout the filter cloth A plurality of injection holes are formed on the outer surface of the inlet to extend into the filter cloth and increase in diameter toward the lower side so that the pressure of the compressed air to be injected is uniform, and the inlet is formed so that large particles are primarily filtered out of incoming dust. The partition wall is characterized in that the alternately provided.

Preferably, the lower portion of the inlet has a downwardly inclined shape to collect the dust primarily filtered by the partition wall, characterized in that the rotary valve is further provided to discharge the collected dust.

The present invention having the above-described configuration is easy to remove the dust attached to the filter cloth by the compressed air uniformly injected throughout the filter cloth to minimize the pressure loss generated in the filter cloth, extend the life of the filter cloth and reduce the power consumption There is.

In addition, since relatively large dust is filtered at the inlet, the pressure difference between the inlet and the outlet is reduced, thereby reducing the power cost consumed by reducing the load placed on the bag filter.

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

2 is a view showing an embodiment of a bag filter equipped with a dust extraction device according to the present invention, Figure 3 is an enlarged view of the portion A shown in FIG.

As shown in FIG. 2, the present invention includes an inlet 10, a filter cloth 20, a blow pipe 30, and an outlet 40.

First, the inlet 10 is a place where external air containing various sizes and types of dust is introduced, and usually has a duct shape and is formed at one side of the bag filter.

In the inlet 10 of the duct shape, a plurality of partitions 12 are installed to primarily filter relatively large and heavy particles from the incoming dust. The partition 12 has a flat plate shape and is installed perpendicular to the inner surface of the inlet 10, and is preferably arranged up and down alternately to form a zigzag flow path as shown.

Because the particles of small size and light dust have small inertia, the particles are introduced into the filter cloth 20 without being caught by the partition wall 12, but the large and heavy dust particles have a large inertia and continue in the same direction. When it collides, it loses kinetic energy and falls to the bottom.

On this principle, large particles of dust can be removed firstly, in addition, as shown in the bottom at the position corresponding to where the partition 12 is installed so that the fallen dust can be naturally collected in one place. It is preferably formed to be inclined downward.

In addition, it is preferable to further include a rotary valve 14 to periodically discharge the dust collected on the downwardly inclined bottom. The rotary valve 14 may be periodically opened and closed by the manager to discharge the dust, but by installing an additional control device may be collected and collected by automatically opening and closing at regular intervals.

As described above, the primary dust removal by the partition wall minimizes the pressure loss by the filter cloth 20 to be described below by reducing the dust concentration of the outside air flowing into the filter dust collector, thereby extending the life of the filter cloth 20 and power. Reduces consumption

Next, the filter cloth 20 will be described.

The filter bag is generally in a shape in which a sieve is overlaid on the outer surface of a hollow tube-shaped frame, and a plurality of filter bags are arranged left and right.

The outside air containing dust passes through the filter cloth 20, the dust is filtered through the mesh of the filter cloth 20 and the filtered clean air exits through the outlet 40.

However, when the filter dust collector is operated for a long time, various dusts are attached to the filter cloth 20 so that clogging occurs. The dust attached as described above needs to be removed and is removed by the blow pipe 30 to be described below.

The blow pipe 30 has a plurality of injection pipes 32 are connected to the lower portion of the pipe in which the compressed air generated from the outside moves at regular intervals, and the compressed air flows in the respective injection pipes 32.

Each of the injection pipes 32 is extended into the filter cloth 20 and a plurality of injection holes 32a are formed on the surface thereof. This structure allows the compressed air supplied from the outside to be evenly sprayed in the filter cloth 20 through the injection hole 32a, and thus the dust adhering to the surface of the filter cloth 20 is uniformly removed. The injection pipe 32 is preferably inserted by the length of the filter cloth (20).

As shown in FIG. 3, the injection pipe 32 has a hollow tube shape because the compressed air supplied from the outside passes, and the diameter of the injection hole 32a is arranged at a predetermined interval toward the lower side. It is characterized by a gradual increase.

When the compressed air flows into the injection pipe 32, the pressure is large at the top, but as the pressure is lowered, the pressure is lowered due to the pressure loss, so that the lower part of the filter cloth 20 is dedusted. Therefore, when the diameter of the injection hole 32a is increased toward the lower side, the pressure of the compressed air to be injected becomes constant and the overall uniform exhaustion effect can be expected in the filter cloth 20.

As described above, since the filter cloth 20 is uniformly exhausted as a whole, it is possible to extend the replacement time and reduce power consumption due to the pressure difference between the outlet 40 and the inlet 10 by the attached dust.

The outlet 40 is also generally a duct shape and is installed on the other side of the bag filter to the place where the clean air passing through the filter cloth 20 is discharged.

As described above, the present invention can uniformly remove the dust attached to the filter cloth by compressed air injected through the injection pipe inserted into the filter cloth by filtering large dust among the dust flowing into the filter bag. It can be seen that there is a technical idea to provide a bag filter equipped with a dust extraction device.

In the present invention, the present invention is only limited to the bag filter, but various modifications are obvious to those skilled in the art within the scope of the technical idea as described above.

Filter dust collector equipped with a dust extraction device according to the present invention is installed in a place where a large amount of dust is generated can be widely used in the industry because it is provided with a dust extraction device that can supply clean air and easily remove the filtered dust. .

1 is a view showing a dedusting apparatus of a conventional bag filter.

2 is a view showing an embodiment of a bag filter equipped with a dust extraction device according to the present invention.

3 is an enlarged view of a portion A shown in FIG. 2;

<< Explanation of symbols for main part of drawing >>

10: inlet 12: bulkhead

14: rotary valve 20: filter cloth

30: blow pipe 32: injection pipe

32a: injection hole 40: outlet

Claims

The inlet port 10 through which the outside air containing dust is introduced, the filter cloth 20 for filtering the dust contained in the outside air, and the compressed air generated from the outside through the injection pipe 32 formed at the lower side to the In the bag filter 30 including a blow pipe 30 to allow dust attached to the filter cloth 20 to be exhausted, and an outlet 40 through which the outside air filtered through the filter cloth 20 is discharged.

The injection pipe 32 formed in the blow pipe 30 is inserted into the filter cloth 20 so that compressed air is evenly sprayed through the filter cloth 20, and the diameter is gradually lowered so that the pressure of the compressed air to be injected is uniform. This increasing number of injection holes 32a are formed on the outer surface,

The inlet 10 is a filter dust collector equipped with a dust collector, characterized in that the plurality of partitions 12 are provided in the upper and lower alternately so that large particles are primarily filtered out of the incoming dust.

The method of claim 1,

The lower portion of the inlet 10,

Filter dust collector equipped with a dust extraction device, characterized in that it has a downwardly inclined shape to collect the dust primarily filtered by the partition wall, the rotary valve 14 to discharge the collected dust.