JP3042315U - Electrostatic precipitator - Google Patents

Abstract

[PROBLEMS] To provide an electrostatic precipitator having a simple structure, rapid processing, a gas containing a large amount of oil particles, and a good dust collecting effect. An electrostatic precipitator of the present invention comprises an ionization section 1, a dust collection section 2 for collecting particles in a gas, a collection section 3, a drive unit 4, a cleaning unit 5, and the above-mentioned. Outer shell 6 that houses the mechanism of
And A non-average electric force field is generated by a high-voltage DC power supply in a stream of particles containing oil, and the oil particles are charged during ionization, and the oil particles in the gas are removed after being adsorbed on the dust collecting electrode. The dust collecting electrode is a ring-shaped electric plate that moves in a circulating manner, and oil particles adsorbed to the moving electric plate are scraped off by a scraping plate.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an electrostatic precipitator that gives an electric charge to suspended particles and moves the charged particles in an electric force field to collect them.

[0002]

[Prior art]

 In the conventional electrostatic precipitator, the dust particles adhering to the electric plate are vibrated to be hit or removed by washing with water. However, since the particles of oil stains adhere to the electric plate, it is not possible to drop the oil particles by using vibrating, and even if it is washed off with a cleaning liquid, it will take a long time after washing with water. It can only be used again after it has been dried.

FIG. 1 shows a conventional electrostatic precipitator 100 used in a place where oil smoke is treated. The dust collector 100 is a device for scraping off oil stains attached to a circular electric plate by a scraping cutter. However, since the electric plate of the electrostatic precipitator 100 is necessarily circular, the shaving cutter cannot be applied to a general rectangular electric plate, and the shaving cutter is located in the dust collecting area at the beginning and end. Therefore, the effect of dust collection will be affected.

FIG. 2 shows another conventional electrostatic precipitator 200. The precipitator 200 is a reciprocating cutter that removes oil particles adhering to a rectangular electric plate. Is. However, this structure is extremely complicated because it requires a large number of moving cutters and tracks.

[0005]

[Problems to be solved by the device]

 As described above, since the electric plate is always circular, it cannot be applied to a commonly used rectangular electric plate. Moreover, since the cutting cutter is also in the dust collecting area at the beginning and end, the dust collecting effect is bad. Another type is extremely complex in structure. The main purpose of the present invention is that the structure is simple and quick, the gas containing a large amount of oil particles is processed, and the oil particles adhering to the electric plate are scraped without stopping the dust collector even during the dust collection time. The purpose of this is to provide an electrostatic precipitator that has a good scraping effect by dropping the scraping plate at the corner of the dust collecting area.

[0006]

[Means for solving the problem]

 A non-uniform electric force field is generated by a high-voltage DC power supply in the gas stream containing oil, and the oil particles are charged during ionization, and after adsorbing to the dust collecting electrode, the oil particles in the gas are removed. The dust collecting electrode is a ring-shaped electric plate that circulates and moves, and the oil particles adsorbed on the moving electric plate are scraped off by a scraping plate.

[0007]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The electrostatic precipitator according to the embodiment of the present invention is shown in FIGS. The electrostatic precipitator according to the embodiment of the present invention includes an ionization unit 1, a dust collection unit 2, a collection unit 3, a drive unit 4 and a cleaning unit 5, an outer shell 6 for housing the above-mentioned mechanism, and the like.

The ionization section 1 is composed of several discharge metal wires 11 for supplying a charge to particles in a gas and applying a high-voltage direct current, and a parallel metal plate 12 for grounding. The dust collecting section is provided on the rear side of the ionization section 1, and its main function is to collect the particles in the air flow after allowing the air flow passing through the ionization section 1 to enter the dust collection section 2. To do. In the present embodiment, the dust collecting part 2 is assembled by a ring-shaped positive electric plate 21 bent along a predetermined path and a negative electric plate 22 distributed between the adjacent positive electric plates 21. There is. The ring-shaped positive electric plate 21 is a thin metal plate having flexibility, is connected to the positive electrode, and has a positive charge. Moreover, non-conductive insulating portions 23 are provided on both sides thereof. The insulating part 23 is coated with a non-conductive thin film so that the surface thereof is not charged with positive charges.

The drive unit 4 has one motor 41 and a plurality of guide wheels 43 pivotally installed at predetermined positions on a frame 42, and the motor 41 therein is one main driving wheel. Drive 44. As shown in FIG. 7, the ring-shaped positive electric plate 21 has a plurality of guide wheels 43 and a main driving wheel 44 wound on the insulating portions 23 on both sides in order, and thereby the positive electric plate 21 of the positive electric plate 21. The friction force generated between the driving wheel 44 driven by the motor 41 of the driving device 4 and the insulating portion 23 of the positive electric plate 21 by generating a constant tension on the surface of the positive electric plate 21 of the entire ring belt shape. Is brought into a state of circulation rotation by the guide wheel 43.

The minus electric plate 22 between the adjacent plus electric plates 21 is erected on the frame frame 42 of the drive unit 4, and the guide wheel 43 and the plus electric plate 21 do not come into contact with each other and are short-circuited. Avoid Moreover, the frame rack 42 is also made of an insulating material. In the present invention, one cleaning device 5 is provided at a predetermined position in the moving path of the ring-shaped positive electric plate 21. In this embodiment, it is installed at one corner of the dust collecting area.

Next, referring to FIG. 6, the cleaning device 5 is provided with one inner cutting plate 51 and one outer cutting plate 52 made of an insulating material. The inner and outer cutting plates 51 and 52 contact the inner and outer surfaces of the positive electric plate 21 separately, and the inner and outer cutting plates 51 and 52 are scraped off with a suitable frictional force to remove the grime adhering to the positive electric plate 21. The oil stains on the surface of the plate 21 are stacked on the inner and outer cutting plates 51, 52.

A cutting cutter 53 that moves linearly is attached to the surfaces of the inner and outer cutting plates 51 and 52. In the present embodiment, the cutting cutter 53 scrapes off oil stains on the surfaces of the inner and outer cutting plates 51 and 52 by driving the pneumatic cylinder 54. The collecting unit 3 is below the cleaning device 5 and stores the oil dust scraped off by the scraping cutter 53. The collecting part can be taken out from one side of the outer shell 6 to remove oil stains.

After the oil smoke enters the ionization section 1 through the inlet 61, the particles of the oil smoke are ionized into particles having negative electricity, and then a large number of particles are arranged in parallel and have different electrical properties. It enters into the electrostatic force field generated by the positive electric plate 21 and the negative electric plate 22, and collects the charged oil particles on the surface of the positive electric plate 21 to form oil stains.

Since the positive electric plate 21 in this embodiment is driven by the motor 41 to circulate and rotate, the ring-shaped positive electric plate 21 continuously slides with the inner and outer cutting plates 51 and 52. Hold contact. As a result, the oil stains adhering to the ring-shaped plus electric plate 21 are continuously scraped off and adhere to the inner and outer cutting plates 51 and 52. Then, when the set working time for adsorbing the oil particles arrives, the atmospheric pressure cylinder 54 drives the cutting cutter 53 to scrape off the oil debris accumulated on the inner and outer cutting plates 51, 52, and the lower side. The purified gas that has fallen into the collecting section 3 of the above and has been oil-removed is discharged from the outlet 62.

In practice, in a place where the amount of oil smoke emitted is relatively small, the present invention may be carried out by exercising the ring-shaped positive electric plate 21 after the work is completed for a certain period of time to scrape off the oil stains. However, on the contrary, when used in a place where the amount of oil smoke emitted is relatively large, the suction fan is started and at the same time the movement of the positive electric plate 21 is started to continuously remove the oil particles adsorbed on the positive electric plate 21. By scraping off, the oil particles are scraped off before accumulating a large amount of oil plaque, thereby maintaining the function of adsorbing the oil particles on the positive electric plate 21.

Referring to FIG. 8, a large number of guide holes 72, which are linearly arranged in the insulating portion 71 of the ring-shaped positive electric plate 7 and are equidistantly distributed, are provided at the periphery of the driving wheel 73. There is a tooth 74, and the convex tooth 74 of the driving wheel 73 meshes with the guide hole 72 of the insulating portion 71 to move the positive electric plate 7. The positive electric plate of the present invention may have a conductive layer of a predetermined width applied between both edges of the insulating material of the fiber cloth.

FIG. 9 shows a second embodiment of the present invention, in which the dust collecting part has a plurality of independently rotating ring-shaped positive electric plates 8 and adjacent positive electric plates. The negative electric plates 81 distributed between the plates 8 are assembled, and each one positive electric plate 8 is provided with a cleaning device 82 at a predetermined position. Of course, this embodiment can also be implemented in the ionization part of the electrostatic precipitator. That is, the earth metal can be manufactured into a strip-shaped metal plate. Even with this, the same effect as the dust collecting part can be obtained.

Further, the oil dust on the inner cutting plate and the outer cutting plate of the cleaning device can also be removed by the high-speed gas ejected from the ejection port. In addition to the two embodiments described above, the present invention can be implemented in the embodiments shown in FIGS. The difference between the above-mentioned both embodiments and the first and second embodiments is that the plus electric plate 9 has two ends individually fixed on one rotary shaft 91, and That is, it is driven between the rotating shafts 91 to perform a reciprocating motion, and is not a circular movement. In the example of FIG. 10 therein, there is one motor 92 as well as one switching device 93, which drives the positive electric plate 9 by the rotating shaft 91 at the different end to move it to the left or right side of the drawing. Can be moved. In FIG. 11, there are two non-simultaneously rotating motors 92.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a conventional electrostatic precipitator.

FIG. 2 is a perspective view showing another conventional electrostatic precipitator.

FIG. 3 is a diagram showing a three-dimensional structure of a first embodiment of the present invention.

4 is a sectional view taken along line IV-IV in FIG.

5 is a cross-sectional view taken along line VV of FIG.

FIG. 6 is a view showing the structure of a cleaning device according to an embodiment of the present invention.

FIG. 7 is a diagram showing a structure of a ring-shaped plus electric plate and a driving wheel according to an embodiment of the present invention.

FIG. 8 is a view showing another structure of the ring-shaped plus electric plate and the driving wheel of the embodiment of the present invention.

FIG. 9 is a view showing a three-dimensional structure of a second embodiment of the present invention.

FIG. 10 is a view showing the structure of a third embodiment of the present invention.

FIG. 11 is a view showing the structure of the fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ionization part 11 Discharged metal wire 12 Parallel metal plate 2 Dust collection part 21 Positive electric plate 22 Minus electric plate 23 Insulation part 3 Collection part 4 Drive device 41 Motor 42 Frame frame 43 Guide wheel 44 Main driving wheel 5 Cleansing device 51 Internal cutting plate 52 External Cutting Plate 53 Cutting Cutter 54 Atmospheric Cylinder 6 Outer Shell 61 Entrance 62 Outlet

Claims (7)

[Utility model registration claims] 1. A negative charge is supplied to an ionization part of particles in a gas, said ionization part being composed of a plurality of discharge metal wires to which direct current high voltage electricity is applied and a parallel metal plate grounded, An electrostatic precipitator including a dust collecting portion that collects the particles of, and an outer shell that houses the ionizing portion and the dust collecting portion, wherein at least one predetermined path is bent in the dust collecting portion. A strip-shaped positive electric plate and a plurality of negative electric plates distributed between the adjacent positive electric plates. The strip-shaped positive electric plate is driven by one driving device to be in a moving state, and Forming a removing device for removing particles adhering to both side surfaces of one positive electric plate at a predetermined position in the moving path of the positive electric plate, one motor for the driving device, and one for the frame. A certain number of guide wheels are pivotally connected, and the plus electric plate is An electrostatic precipitator characterized in that a guide wheel is wound around the insulating parts on both sides of the device, and the cleaning device is contacted with a strip-shaped plus electric plate by one inner cutting plate and one outer cutting plate. . 2. The electrostatic precipitator according to claim 1, wherein the belt-shaped positive electric plate is a thin metal plate having flexibility and has non-conductive insulating parts on both sides thereof. . 3. The dust collecting part is assembled by at least one ring-shaped positive electric plate and a negative electric plate distributed between adjacent positive electricity, and each predetermined one of the ring-shaped positive electric plates. The electrostatic precipitator according to claim 1, wherein a cleaning device is provided at the position. 4. A plurality of guide holes having a continuous linear arrangement and an equidistant distribution can be provided in the insulating portions on both sides of the belt-shaped positive electric plate, and the guide holes have a driving tooth with a convex tooth. The electrostatic precipitator according to claim 1, wherein the electrostatic precipitator meshes with a wheel. 5. The electrostatic precipitator according to claim 1, wherein the grounding metal plate of the ionization section can also be manufactured as a strip-shaped metal plate. 6. The electrostatic precipitator according to claim 1, wherein the belt-shaped plus electric plate has two ends connected to each other and can be moved in a circulating manner from a driving device. 7. The belt-shaped positive electric plate has both ends individually fixed to one rotary shaft, and is driven between the two rotary shafts to reciprocate. The electrostatic precipitator described in.