KR200248292Y1 - Filter for Dust Collector - Google Patents

Abstract

A filter for a dust collector that can prevent static electricity is disclosed. The dust collector filter includes a filter cloth installed inside the dust collector to filter contaminants contained in the air, and antistatic means for suppressing the formation of static electricity on the filter cloth. The antistatic means includes a carbon layer formed by heating and adsorbing carbon particles on at least one surface of the filter cloth. Since the dust collector filter is provided with an antistatic means, the dust collector filter may be applied to a dust collector even at a work site where flammable dust or explosive gas is generated without a risk of fire caused by electrostatic discharge. The carbon layer as the static electricity suppressing means is formed by heating and adsorbing carbon particles on the surface of the filter cloth, so that the workability is excellent and the adhesion of the carbon particles is maintained reliably. And, the air permeability of the filter cloth can be adjusted to an appropriate level. In addition, there is an advantage that the mechanical strength of the filter cloth is greatly improved by curing the carbon particles of the carbon layer.

Description

Filter for dust collector {Filter for Dust Collector}

The present invention relates to a dust collector filter for removing dust generated in the industry, in particular to prevent or suppress the generation of static electricity that can cause the ignition and explosion of the dust or gas in an industrial site where flammable dust or explosive gas is generated It is about filter of dust collector which can be done.

In general, air containing a large amount of dust or harmful gas is emitted from a workplace such as steel industry, cement industry, paint factory, coal mine or tunnel construction. When such polluted air is discharged to the atmosphere as it is, serious air pollution problem occurs, and it is recommended or mandated to use a dust collector to remove pollutants at the work site. Typically, a dust collector incorporates a filter made of filter cloth for filtering dust or contaminants in the air.

However, in a work site where a lot of combustible dust or explosive gas is generated, such as a tunnel construction or a paint factory, static electricity is generated in the filter cloth filter due to friction or collision of rock particles suspended in the air. Since the filter cloth is usually made of a non-conductive material, the electrostatic charge formed in the filter cloth continues to accumulate locally and eventually discharge under certain conditions. The flame accompanying the electrostatic discharge on such filter cloth may ignite flammable dust or explosive gas, causing a disaster such as a fire or an explosion.

Therefore, in a work site where flammable dust or explosive gas is generated, a large blower is used to inject fresh air from the outside of the workplace without using a dust collector to release pollutants to the outside atmosphere.

As such, when the pollutants are directly discharged to the outside of the workplace using a large blower without filtering the pollutants with the dust collector, not only the air environment outside the workplace is significantly polluted but also the power consumption for operating the large blower increases, resulting in increased energy consumption. There is a wasteful problem.

The present invention is to solve the above problems, it is an object of the present invention to provide a dust collector filter that can be used safely without the risk of fire even in a work environment in which flammable dust or explosive gas is generated.

1A and 1B show an example of a dust collector filter according to the present invention, FIG. 1A is a front view, and FIG. 1B is a bottom view.

2A and 2B show another example of the dust collector filter according to the present invention, and FIG. 2A is a front view and FIG. 2B is a bottom view.

Figure 3 is a plan view showing a state in which a carbon layer is formed on the surface of the filter cloth of the filter for dust collector of the present invention.

[Explanation of symbols on the main parts of the drawings]

10, 20: filter

12, 22: filter cloth

16, 26: holder

18, 28: carbon layer

The filter for dust collector of the present invention for achieving the above object includes a filter cloth installed inside the dust collector to filter contaminants contained in the air, and antistatic means for suppressing the formation of static electricity on the filter cloth. The antistatic means includes a carbon layer formed by heating and adsorbing carbon particles on at least one surface of the filter cloth.

Since the dust collector filter of the present invention having the configuration as described above is provided with an antistatic means, it can be applied to the dust collector without a risk of fire due to electrostatic discharge even at the work site where flammable dust or explosive gas is generated.

In addition, since the carbon layer, which is an antistatic means of the present invention, forms carbon particles on the surface of the filter cloth by the 'heat adsorption' method, the workability is excellent and the adhesion of the carbon particles is maintained reliably. And, the air permeability of the filter cloth can be adjusted to an appropriate level. In addition, there is an advantage that the mechanical strength of the filter cloth is greatly improved by curing the carbon particles of the carbon layer.

Hereinafter, with reference to the accompanying drawings, it will be described in detail preferred embodiments of the filter for a dust collector of the present invention.

1A and 1B illustrate a filter 10 for a cylindrical dust collector, which is an embodiment of the present invention. The cylindrical dust collector filter 10 of the present embodiment includes a cylindrical filter cloth 12 for trapping contaminants in the air. The filter cloth 12 is supported by the bag-shaped wire mesh 14, and even when the dust collection process flow rate is 1.5 m / min, for example, the form does not change and can exhibit dust collection performance. The cylindrical filter 10 is installed at a predetermined position inside the main body (not shown) of the dust collector by the fixing stand 16.

The filter cloth 12 may preferably be made by needle felting the polyester fibers in a cylindrical shape. The filter cloth may be a woven or nonwoven fabric drawn by various methods (eg, weaving, braiding, braiding, etc.) in addition to the needle felting method. A gap (vent) between the polyester fibers of the filter cloth 12 allows the contaminant to be filtered out and the purified air to pass through. The filter cloth 12 is provided with antistatic means for preventing or suppressing the generation of static electricity due to friction or collision of rock particles suspended in contaminated air.

As shown in FIG. 3, the antistatic means is composed of a carbon layer 18 formed by attaching carbon particles to an outer surface (surface in contact with contaminated air) of the filter cloth 12. As shown in FIG. The carbon layer 18 is formed uniformly over the entire area of the filter cloth in a lattice shape as shown. However, the shape of the carbon layer of the present invention is not limited to the lattice shape may have a variety of shapes, such as square, circular. In addition, the carbon layer 18 may be formed on the inner side of the filter cloth 12 (the surface where the purified air contacts), or may be formed on both the inner side and the outer side of the filter cloth 12.

In the present invention, 'heat adsorption' technology is used to form the carbon layer 18 on the filter cloth 12, which will be described.

First, hot air is blown into a portion (in the present embodiment, a lattice portion) in which carbon particles of the filter cloth 12 are to be formed so that the air vents between the polyester fibers of the filter cloth 12 are thermally expanded. In this state, when the carbon powder having a predetermined size is diluted in hot air and blown onto the filter cloth 12, the carbon particles are trapped in the expanded vent of the filter cloth 12. Then, quenching the filter cloth 12 causes the vent of the filter cloth that trapped the carbon particles to be reduced to its original state, and the carbon particles are firmly attached onto the filter cloth. In this way, carbon layers arranged in a predetermined shape are formed on the filter cloth.

In the dust collector employing the filter 10 of the present embodiment configured as described above, even if static electricity is generated in the filter cloth 12 due to collision or friction of rock particles, the electrostatic charge is dispersed by the carbon layer 18 having a relatively low resistance. Local accumulation of charge on the filter cloth 12 is prevented. Therefore, the possibility of generating spark discharge on the filter cloth due to the accumulated static charge is significantly reduced. As a result, the dust collector having the filter of the present embodiment can be safely used even in a work site where a lot of flammable dust or explosive gas is generated, such as a tunnel construction, a paint factory, and the like, without a risk of fire or explosion.

In addition, in this embodiment, since a 'heat adsorption' technique is used in which a separate adhesive is not required to attach the carbon particles onto the filter cloth 12, the workability is very excellent and the carbon particles are not only formed on the filter cloth 12. Can be reliably attached and retained.

In addition, since the portion where the carbon particles are adsorbed ('adsorption portion') on the surface of the filter cloth filter 10 of the present embodiment has the same air permeability as the portion where the carbon particles are not adsorbed (the 'non-adsorption portion'), excellent electrostatic A filter for dust collector is provided, which has a prevention effect and hardly degrades its dust collection performance.

2A and 2B show a pleated cylindrical filter 20 which is another embodiment of the filter for dust collector of the present invention. The filter 20 for pleated dust collector of the present embodiment has a cylindrical filter cloth 22 folded to form a plurality of pleats 22a along the circumferential direction, as shown in FIG. 2B. In this embodiment, since the filter cloth 22 is folded several times, the dust collection area is greatly increased. Reference numeral 26 is a holder for fixing the filter to the main body (not shown) of the dust collector.

The filter cloth 22 of the present embodiment is also preferably made by needle felting polyester fibers, and contaminants are filtered by the vents between the polyester fibers. Referring to Fig. 3, which shows the surface of the filter cloth before being folded in Fig. 2B, the antistatic means provided on the filter cloth 22 includes a carbon layer 28 formed by heat adsorption of carbon particles.

In this embodiment, the material and manufacturing method of the filter cloth 22, the shape of the arrangement of the carbon layer 28, the technique of 'heat-adsorption' carbon particles to the filter cloth 22, and the carbon layer on the filter cloth 22 The effect of preventing the generation of static electricity by forming the filter is the same as the first embodiment described above, so a detailed description thereof will be omitted.

In particular, the pleated filter 20 of the dust collector of the present embodiment has a much larger dust collecting area of the filter cloth than the dust collector filter shown in Fig. 1, and thus the dust collecting performance per unit volume of the dust collector is improved. In addition, the carbon particles of the carbon layer 28 heat-adsorbed on the filter cloth 22 are cured, so that the overall mechanical strength of the filter cloth 22 is greatly improved. Therefore, even if the flow rate of the filtration air of a dust collector is raised to 1.8 m / min, for example, the pleated filter cloth 22 of this embodiment can fully exhibit dust collection performance, maintaining the original shape. If the carbon particles are not formed and cured on the filter cloth of the pleated cylindrical filter, the shape is deformed even when the flow rate of the filtration air is 1.0 m / min, so that the dust collecting performance of the filter cannot be sufficiently exhibited.

As described above, the pleated cylindrical filter 20 of the dust collector of the present embodiment can increase the upper limit of the filtration air flow rate by improving the strength of the filter cloth due to the hardening of the carbon particles while increasing the dust collecting treatment area. As a result, the dust collector can be miniaturized. Therefore, there is an advantage that it can be easily applied even in places where the installation space is small, such as in a narrow tunnel during construction.

The embodiments described above are presented for the purpose of describing the technology of the present invention, and the present invention is not limited to the above embodiments. Therefore, it should be understood that various modifications are possible without departing from the spirit and scope of the inventive concept.

Since the filter of the dust collector of the present invention includes an antistatic means, it can be applied to the dust collector without a risk of fire due to the discharge of static electricity even at the work site where flammable dust or explosive gas is generated. Therefore, since there is no need to use a separate large blower for directly discharging the polluted air in the interior of the workplace, it is possible to minimize environmental pollution of the outside air and to save energy.

In addition, in the present invention, since the carbon particles are formed on the filter cloth by the 'heat adsorption' method to form a carbon layer which is an antistatic means, the workability is excellent and the adhesion state of the carbon particles to the filter cloth is maintained firmly. In addition, the carbon particle adsorption portion of the filter cloth has almost the same air permeability as the non-adsorption portion, and dust collection performance is not reduced.

In addition, in the dust collector filter of the present invention, the mechanical strength of the filter cloth is greatly improved due to the hardening of the carbon particles of the carbon layer, and thus the flow rate of the filter air can be increased, so that the dust collection performance is remarkably improved, especially when the pleated cylindrical filter is applied. This has the advantage of miniaturizing the dust collector.

Claims (4)

A filter cloth installed inside the dust collector to filter contaminants contained in the air; It includes antistatic means for suppressing the formation of static electricity on the filter cloth, And said antistatic means comprises a carbon layer formed by heating and adsorbing carbon particles on at least one surface of said filter cloth. The filter for dust collector of claim 1, wherein the carbon layer is formed on a surface of the filter cloth in contact with air containing contaminants. The filter for dust collector of claim 1, wherein the carbon layer is uniformly distributed on the surface of the filter cloth in a continuous lattice shape. The filter for dust collector of claim 1, wherein the filter cloth is formed in a pleated cylindrical shape.