KR102184924B1 - Mist collection device for a painting booth using plasma - Google Patents

Abstract

The present invention relates to a mist collection device for a painting booth using plasma, in which paint oil mist is negatively charged into a charged body by anionizing oxygen molecules in the clean air discharged through an air discharge passage of a main body and mixing the anionized oxygen with the paint oil mist contained in the contaminated air sucked in through an air discharge passage. After the negatively charged body is adsorbed on the surface of an electrostatic precipitator, the volatile organic compound (VOC) contained in the polluted air, from which the paint oil mist has been removed, is filtered through an activated carbon filter and cleaned through the hollow inside of the filter so as to discharge clean air. While the painting operation is stopped, the paint oil mist is brushed off with a brush and collected in a collector to be removed out. According to the present invention, the paint oil mist with a viscosity of 1 μm or less contained in the contaminated air generated during painting inside the paint booth is adsorbed on the surface of the electrostatic precipitator to effectively filter out the volatile organic compounds (VOCs) contained in the air polluted with the activated carbon filter. If the paint oil mist adsorbed on the surface of the electrostatic precipitator is brushed off with a brush and collected in a collecting bin and then removed to the outside of the main body, the surface contamination condition of the mist collector can be easily improved, and the mist collecting performance of the electrostatic precipitator according to the present invention can be improved.

Description

Dust collection device for paint booth using plasma {Mist collection device for a painting booth using plasma}

The present invention relates to a dust collector, and more particularly, to a dust collector for paint booths using plasma.

Typically, paint booths are manufactured in a sealed structure in order to spray paint on a vehicle body, etc., and are mainly manufactured in a square sealed structure in which the vehicle entrance is formed in the front part or the front part and the rear part.

The paint booth is from the inside of the booth from contaminated air containing viscous paint oil mist and volatile organic compounds (VOC), etc., while paint painting work for vehicles entering the interior is in progress. In order to ensure the safety of breathing workers, air in the booth is ventilated by operating the air supply and exhaust systems installed on the ceiling or side walls.

In addition, while the air supply and exhaust devices operate to ventilate the air inside the booth, the paint booth operates a dust collector installed in the exhaust path, and paint oil mist and volatile organic matter contained in the air discharged through the exhaust system. Compounds (VOC) and the like are filtered, and as a result, only clean air in which the above-described paint oil mist and volatile organic compounds (VOC) have been filtered is discharged to the outside of the booth to prevent air pollution.

On the other hand, since the conventional dust collecting device applied to the above-described paint booth is simply composed of a filter filter using a fibrous glass fiber plate, paint oil mist and volatile organic compounds (VOC) were initially replaced with a new filter filter. Filtration of the back proceeds smoothly, but as the paint painting work time increases, the pores of the filter filter are easily clogged by the viscous paint oil mist, and the filtration performance is rapidly degraded.

In addition, the filtration filter cannot effectively filter the volatile organic compounds (VOC) because it simply uses a fibrous glass fiber plate, and removes paint oil mist having a viscosity of 1 μm or less among the above paint particles. Can not.

KR 20-0253940 Y1

The present invention is to solve the conventional problems as described above, and an object of the present invention is to anionize oxygen molecules in the clean air discharged through the air discharge passage of the main body while the painting work is in progress in the paint booth. Anionized oxygen and paint oil mist contained in the contaminated air sucked through the air discharge passage are mixed, and the paint oil mist is charged with a negative electric charge, and then adsorbed on the surface of the electric dust collection network. Volatile organic compounds (VOC) contained in the contaminated air from which the paint oil mist has been removed are filtered through an activated carbon filter to discharge clean air to the outside through the inner hollow of the filter, and the paint oil mist with a brush while the painting work is stopped. It is to provide a dust collecting device for a paint booth using plasma that shakes and collects it in a collection container.

In order to achieve the object of the present invention as described above, the dust collector for a paint painting booth using plasma according to the present invention, while painting work in the paint painting booth is in progress, sucks contaminated air through an intake port and A cylindrical body forming an air discharge passage for discharging only clean air from which the pollutant source has been removed; Paint oil mist contained in the contaminated air that is installed around the intake port of the main body and generates plasma to anionize oxygen molecules in the clean air discharged through the hollow inside the filter below, and the anionized oxygen and contaminated air sucked through the intake port A plasma generator for charging the paint oil mist with a negative electric charge by allowing the mixture to be mixed; Hollow barrel type electricity that is made of a metal mesh and is installed to be rotated around a rotating shaft inside the main body, receives positive high voltage from a high voltage generator, collects and adsorbs the paint oil mist charged with a negatively charged material on the surface. Dust collection network; It is made of an activated carbon filter and is installed to be rotated about the rotating shaft together with the electric dust collection network while being coupled to the inner surface of the electric dust collection network, and contained in the contaminated air from which the paint oil mist has been removed by the electric dust collection network. Hollow tubular filter for filtering volatile organic compounds (VOC); And an exhaust fan disposed so as to communicate with the exhaust port of the main body to discharge clean air discharged through the inner hollow of the filter to the outside of the main body.

In the dust collecting apparatus for a paint booth using plasma according to the present invention, wherein the plasma generator comprises: a dielectric plate made of a flat plate; A plasma electrode formed on the outer surface of the dielectric plate and applied with a negative (-) voltage; A substrate having at least two through-holes having a metal conductor layer formed on an inner wall thereof arranged at predetermined intervals and attached to the rear surface of the dielectric plate; A plurality of needle electrodes inserted into each of the through-holes, one end of which is in close contact with the dielectric plate, and the other end of which is exposed to the outside; And a ground electrode disposed at a predetermined distance from the plurality of needle electrodes, and in close contact with one end of the substrate to the substrate via the dielectric plate while a pulse voltage is applied to the plasma electrode and the ground electrode. Plasma is generated in a space between the distal ends of the plurality of needle electrodes and the ground electrode to anionize contaminated air sucked through the inlet of the main body and oxygen molecules in the air inside the main body.

In the dust collecting apparatus for a paint booth using plasma according to the present invention, the motor for rotating the rotating shaft while the painting work in the paint booth is stopped; A mist eliminator configured to attach a brush to the surface of the rotating pipe, and brushing off the paint oil mist adsorbed on the surface of the battery collecting network while the electric dust collecting network rotates together with the rotating shaft by the motor; And a collection container disposed to collect the paint oil mist from the inside of the body by the brush.

In the dust collector for a paint booth using plasma according to the present invention, the rotating pipe is rotated in a direction opposite to the motor by a motor for a rotating pipe.

In the dust collecting device for a paint booth using plasma according to the present invention, the collecting container removes the paint oil mist attached to the brush rotating by the rotating pipe, and forms a wall portion for inducing free fall toward the collecting container. It is characterized by being.

According to the present invention, paint oil mist having a viscosity of 1 μm or less contained in the contaminated air generated during the paint painting operation inside the paint booth is adsorbed to the surface of the electric dust collecting network and effectively filtered, while effectively filtering the air contaminated with an activated carbon filter. Volatile organic compounds (VOC) of the included paint can also be effectively filtered.

In addition, if the paint oil mist adsorbed on the surface of the electric dust collection network according to the present invention is brushed off with a brush and collected in a collection container and then removed to the outside of the main body, the surface contamination of the electric dust collection network can be easily improved, according to the present invention. The dust collection performance of the dust collector can be increased.

1 is an embodiment showing the configuration of a dust collector for a paint booth using plasma according to the present invention.
Fig. 2 is an embodiment showing the configuration of the plasma generator shown in Fig. 1;
3 is an embodiment showing a combined state of the electric dust collection network and the filter.
Figure 4 is an embodiment explaining the operation of brushing off the paint oil mist adsorbed on the surface of the battery dust collecting network shown in Figure 1;

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

The dust collector for a paint booth using plasma according to the present invention described below is not limited to the following embodiments, and a person having ordinary knowledge in the relevant technical field without departing from the gist of the technology claimed in the claims It has its technical spirit to the extent that anyone can change it and implement it.

1 to 4, the dust collector 100 for a paint booth using plasma according to the present invention includes a main body 110, a plasma generator 120, an electric dust collection network 130, a filter 140, and exhaust air. It is configured to include a fan 150, a motor 160, a mist eliminator 170 and a collection container 180.

The main body 110 forms an air discharge passage for inhaling contaminated air through the intake port 111 and discharging only clean air from which the pollutant has been removed through the exhaust port 112 while painting work is in progress in the paint booth. .

The main body 110 is preferably manufactured in a cylindrical shape (for example, a cylindrical shape, a square cylindrical shape, a polygonal cylindrical shape, etc.), and in FIGS. 1 to 4 illustrating an embodiment of the present invention, the main body 110 manufactured in a cylindrical shape is illustrated. Are doing.

The plasma generator 120 is installed around the inlet 111 of the main body 110 and generates plasma to anionize oxygen molecules in the clean air discharged through the hollow inside the filter 140 and Paint oil mist contained in the contaminated air sucked through the intake port 111 is mixed so that the paint oil mist is charged with a negative electric charge.

The plasma generator 120 receives some of the clean air discharged to the exhaust port 112 of the main body 110 through the hollow inside the filter 140 through the clean air supply pipe 120a.

As shown in FIG. 2, the plasma generator 120 includes a dielectric wave 121, a plasma electrode 122, a substrate 123, a plurality of needle electrodes 124, and a ground electrode 125.

The dielectric plate 121 is preferably made of a flat plate using a dielectric material such as quartz, sapphire, glass, ceramic, polymer film, or PEI (Polyetherimide).

The plasma electric wire 122 is formed on the outer surface of the dielectric plate 121 and a negative (-) voltage is applied thereto.

At least two through-holes 123a having a metal conductor layer formed on an inner wall of the substrate 123 are arranged at predetermined intervals, and are attached to the back surface of the dielectric plate 121.

The plurality of needle electrodes 124 are inserted into each of the through holes 123a, so that one end of the needle electrode 124 is in close contact with the dielectric plate 121, and the other side of the sharp end is exposed to the outside.

The ground electrode 125 is disposed at a predetermined interval from the plurality of needle electrodes 124.

The plasma generator 120 is in close contact with one end of the substrate 123 to the substrate 123 via the dielectric plate 121 while a pulse voltage is applied to the plasma electrode 122 and the ground electrode 125. Plasma is generated in the space between the tip of the plurality of needle electrodes 124 and the ground electrode 125 to anionize oxygen molecules in the clean air discharged through the hollow inside the filter 140 and Paint oil mist contained in the contaminated air sucked through the intake port 111 is mixed.

The electric dust collecting network 130 is made of a metal mesh and is installed to be rotated around a rotation shaft 131 inside the main body 110, and receives a positive electrode high voltage from a high voltage generator (not shown) to a charging body having negative electricity. The charged paint oil mist is electrostatically collected and adsorbed on the surface.

It is preferable that the filter 140 is made of an activated carbon filter.

The filter 140 is installed to be rotated about the rotating shaft 131 together with the electric dust collecting network 130 in a state coupled to the inner surface of the electric dust collecting network 130, and by the electric dust collecting network 130 Volatile organic compounds (VOC) contained in the contaminated air from which the paint oil mist has been removed are filtered.

The exhaust fan 150 is disposed to communicate with the exhaust port 112 of the main body 110 and discharges clean air discharged through the inner hollow of the filter 140 to the outside of the main body 110.

The motor 160 rotates the rotation shaft 131 while the painting work in the paint booth is stopped.

The mist eliminator 170 is configured such that the brush 172 is attached to the surface of the rotating pipe 171.

The mist eliminator 170 removes the paint oil mist adsorbed on the surface of the battery dust collection network 130 while the electric dust collection network 130 rotates together with the rotation shaft 131 by the motor 160. Brush it off with a brush (171).

The collection container 180 is disposed to collect the paint oil mist blown off by the brush 171 in the body 110.

The collection container 180 is formed with a wall portion 181 that removes the paint oil mist attached to the rotating brush 171 by the rotation pipe 171 and induces a free fall toward the collection container 180. It is desirable to have.

The collection container 180 may be pushed or pulled out of the main body 110 in a drawer manner.

The dust collector 100 for a paint booth using plasma according to the present invention configured as described above operates as follows.

For example, during paint painting work for vehicles entering the paint booth, workers breathing inside the booth from contaminated air containing viscous paint oil mist and volatile organic compounds (VOC) of paint, etc. To ensure safety, air in the booth is ventilated by operating the air supply and exhaust systems installed on the ceiling or side walls.

The dust collecting device 100 for a paint booth using plasma according to the present invention is installed in the exhaust path while the air supply device and the exhaust device installed in the above-described paint booth operate to ventilate the air inside the booth. An air discharge passage through which only air is discharged is formed.

The dust collecting device 100 for a paint booth using plasma according to the present invention may be disposed at the front end or the rear end of the exhaust device installed in the paint booth.

While the painting work is in progress in the above-described paint booth, the exhaust fan 150 is operated and contaminated air in the booth is sucked through the intake port 111 through the inlet 111 of the main body 110.

While the contaminated air sucked through the intake port 111 of the main body 110 is inhaled, the plasma generator 120 operates to generate plasma around the intake port 111 of the main body 110.

In this way, when plasma is generated around the intake port 111 of the main body 110, contaminated air sucked through the intake port 111 and oxygen molecules in the air inside the main body 110 are negatively ionized.

The anionized oxygen as described above is mixed with the paint oil mist contained in the contaminated air around the intake port 111 to charge the paint oil mist into a negative electric charge.

In this way, the paint oil mist charged with a negative electric charge is applied to the surface of the electric dust collecting network 130 having a positive polarity by receiving a positive high voltage from a high voltage generator while painting is in progress in the paint booth. Electric dust is collected and adsorbed.

Accordingly, among the pollutants contained in the contaminated air, first, paint oil mist having viscosity, especially paint oil mist having viscosity of 1 μm or less, is adsorbed and filtered on the surface of the electric dust collecting network 130, and the remaining gas components Pollutants, such as volatile organic compounds (VOC) of paint, pass through the electric dust collecting network 130.

Volatile organic compounds (VOC) and the like that have passed through the electric dust collecting network 130 are filtered while passing through the hollow cylindrical filter 140 made of an activated carbon filter.

When gaseous contaminants such as volatile organic compounds (VOC) are filtered by the filter 140, the clean air that has finally passed through the filter 140 passes through the inner hollow of the filter 140 and the main body 110 ) Is discharged to the outside through the exhaust fan 150 which is arranged to communicate with the exhaust port 112.

If the dust collecting device 100 for a paint painting booth using plasma according to the present invention is disposed at the front end of the exhaust device installed in the above-described paint booth, cleanliness discharged to the outside through the exhaust fan 150 Air is released into the atmosphere via the exhaust device.

If the dust collecting device 100 for a paint booth using plasma according to the present invention is disposed at the rear end of the exhaust device installed in the above paint booth, cleanliness discharged to the outside through the exhaust fan 150 Air is released into the atmosphere as it is.

As such, it is natural that air pollution is prevented by discharging clean air by disposing the dust collecting device 100 for a paint painting booth using plasma according to the present invention at the front end or the rear end of the exhaust device installed in the above paint painting booth. .

In particular, when the dust collecting device 100 for a paint painting booth using plasma according to the present invention is disposed at the front end or the rear end of the exhaust device installed in the above-described paint painting booth to discharge clean air, during paint painting work inside the booth Volatile organic paint contained in the air contaminated by the filter 140 while effectively filtering out paint oil mist having a viscosity of 1㎛ or less contained in the generated contaminated air on the surface of the electric dust collecting network 130 Compounds (VOC) can also be effectively filtered.

On the other hand, while the painting work in the paint booth is stopped, the motor 160 is operated to rotate the electric dust collecting network 130 together with the rotation shaft 131 by the motor 160, While the electric dust collecting network 130 rotates, the paint oil mist adsorbed on the surface of the battery collecting network 130 is brushed off with a brush 171, and a collecting container 180 disposed inside the main body 110 ) Can be collected.

At this time, the rotating pipe 171 with the brush 172 attached to the surface is adsorbed on the surface of the battery dust collecting network 130 while rotating in the opposite direction to the motor 160 by the rotating pipe motor 171a. Shake off the paint oil mist with a brush (171).

In addition, as the brush 171 rotated by the rotating pipe 171 rotates while being swept against the wall portion 181, the paint oil mist attached to the brush 172 is separated from the brush 171 and the collection container It falls freely toward (180) and is collected in the collection container (180).

According to the present invention, when the paint oil mist adsorbed on the surface of the electric dust collecting network 130 is shaken with a brush 172 and collected in the collection container 180 and removed to the outside of the main body 110, the electric dust collecting network ( It is possible to easily improve the surface contamination condition of 130), and increase the dust collecting performance of the dust collecting apparatus 100 according to the present invention.

100: dust collector for paint booth using plasma
110: main body 111: intake port
112: exhaust port 120: plasma generator
120a: clean air supply pipe 121: dielectric plate
122: plasma electrode 123: substrate
123a: through hole 124: needle electrode
125: ground electrode 130: electric dust collection network
140: filter 150: exhaust fan
160: motor 170: mist eliminator
171: rotating pipe 171a: motor for rotating pipe
172: brush 180: collector
181: wall

Claims (5)

While painting work is in progress in the paint booth, a cylindrical body 110 that forms an air discharge flow path through which contaminated air is sucked through the intake port 111 and only clean air from which the pollutant has been removed through the exhaust port 112 Wow;
It is installed around the intake port 111 of the main body 110 and generates plasma to anionize oxygen molecules in the clean air discharged through the hollow inside the filter 140 below, and the anionized oxygen and the intake port 111 A plasma generator 120 for charging the paint oil mist with a negative electric charge by mixing the paint oil mist contained in the contaminated air sucked through;
It is made of a metal mesh and is installed to be rotated around the rotating shaft 131 inside the main body 110, and receives the positive electrode high voltage from the high voltage generator, and collects the paint oil mist charged with a negative electric charge to the surface. Hollow tubular electric dust collecting network 130 for adsorption;
It is made of an activated carbon filter and is installed to be rotated about the rotating shaft 131 together with the electric dust collecting network 130 in a state coupled to the inner surface of the electric dust collecting network 130, and the electric dust collecting network 130 A hollow cylindrical filter 140 for filtering volatile organic compounds (VOC) contained in the contaminated air from which the paint oil mist has been removed; And
An exhaust fan 150 disposed so as to communicate with the exhaust port 112 of the main body 110 to discharge clean air discharged through the inner hollow of the filter 140 to the outside of the main body 110;
Dust collecting device for a paint booth using plasma, characterized in that consisting of. The method of claim 1, wherein the plasma generator (120)
A dielectric plate 121 made of a flat plate;
A plasma electrode 122 formed on the outer surface of the dielectric plate 121 and applied with a negative (-) voltage;
A substrate 123 in which at least two or more through holes 123a having a metal conductor layer formed on an inner wall thereof are arranged at predetermined intervals and attached to the rear surface of the dielectric plate 121;
A plurality of needle electrodes 124 inserted into each of the through-holes 123a so that an end of one side is in close contact with the dielectric plate 121 and a pointed end of the other side is exposed to the outside; And
A ground electrode 125 disposed at a predetermined interval from the plurality of needle electrodes 124;
Consists of,
While a pulse voltage is applied to the plasma electrode 122 and the ground electrode 125, a plurality of needle electrodes 124 are in close contact with one end of the substrate 123 to make surface contact with the substrate 123 via the dielectric plate 121 Plasma is generated in the space between the front end of the filter 140 and the ground electrode 125 to anionize oxygen molecules in the clean air discharged through the hollow inside of the filter 140, and through the anionized oxygen and the intake port 111 A dust collector for a paint booth using plasma, characterized in that the paint oil mist contained in the inhaled contaminated air is mixed. The motor according to claim 1, further comprising: a motor (160) rotating the rotating shaft (131) while the painting operation in the paint booth is stopped;
The electric dust collecting network 130 is configured to be attached to the surface of the rotating pipe 171 and the electric dust collecting network 130 is rotated together with the rotating shaft 131 by the motor 160 A mist eliminator 170 to shake off the paint oil mist adsorbed on the surface of the paint with a brush 171; And
A collection container 180 disposed to collect the paint oil mist blown off by the brush 171 in the body 110;
Dust collector for a paint booth using plasma, characterized in that it is configured to further include. [4] The dust collector of claim 3, wherein the rotation pipe (171) rotates in a direction opposite to the motor (160) by a rotation pipe motor (171a). The wall part according to claim 3, wherein the collection container 180 removes the paint oil mist attached to the rotating brush 171 by the rotation pipe 171 to induce free fall toward the collection container 180. A dust collector for a paint booth using plasma, characterized in that (181) is formed.

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