JP2003053212A - Electrode cleaner for discharge gas treater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrode cleaner that can clean a linear electrode without fail without detriment to the discharge treatment performance of a discharge treating section and does not produce wastewater. SOLUTION: The electrode cleaner 20 is one which cleans a linear electrode 10 of a vertical discharge treatment section 6 and is provided with a cleaning member 22 through which the electrode 10 is penetrated and which is vertically movable along the electrode 10, a hanging string 24 that hangs the member 22 from the upper part of the section 6 and a winder 26 that is provided outside the section 6 and vertically reciprocates the member 22 by winding and unwinding the string 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear electrode of a discharge treatment section which constitutes a discharge gas treatment apparatus for performing discharge treatment of a gas to be treated by pulse corona discharge, for example, removing harmful substances, deodorizing, air purification and the like. The present invention relates to an electrode cleaning device that removes foreign matter that may adhere depending on the gas composition to be processed.

[0002]

2. Description of the Related Art Various discharge gas treatment apparatuses of this kind have been conventionally proposed. For example, Japanese Patent Laid-Open No. 2000-126
See Japanese Patent No. 543.

FIG. 16 shows an example thereof. The discharge gas treatment device 2 has a coaxial structure in which a linear electrode 10 is coaxially arranged in a cylindrical electrode 8 and a pulse corona discharge is generated in a gas to be treated 4 introduced between the electrodes 8 and 10. Discharge processing unit 6 for generating and processing the gas to be processed 4, and this discharge processing unit 6
And a pulse power supply 14 for generating a pulse corona discharge by applying a high voltage pulse voltage between both electrodes 8, 10.

A thin linear electrode 10 on which an electric field is concentrated serves as a corona electrode, and a cylindrical electrode 8 surrounding the thin linear electrode 10 serves as a non-corona electrode, and corona discharge progresses from the linear electrode 10, whereby a gas to be treated is generated. 4. For example, harmful substances can be removed, deodorization, air purification, etc. can be performed as described above.

In this example, the discharge processing unit 6 is arranged vertically (standing up and down), and the linear electrode 10 is supported between two electrode support rods 12 arranged vertically. . The gas to be processed 4 is normally supplied into the discharge processing unit 6 from the top to the bottom.

With the operation of the discharge gas treatment apparatus 2,
Depending on the gas composition to be treated, foreign matter such as reaction products (foreign matter 1 in FIG. 6 and FIG.
1) may adhere. If this is left as it is, it becomes difficult to stably generate the pulsed corona discharge, and the processing capacity of the gas to be processed 4 decreases. In order to prevent this, it is necessary to clean the linear electrode 10 to remove foreign matter.

As a means for cleaning the linear electrode of an air purifier, Japanese Patent Laid-Open No. 2000-176312 uses a feed screw mechanism composed of a feed screw shaft and a slider screwed to the feed screw shaft to pass the linear electrode. A feed screw mechanism system in which a cleaning member is reciprocated has been proposed. It is conceivable to apply this to the cleaning of the linear electrode 10.

As an electrode cleaning method of the discharge gas treatment apparatus, a hammering method in which a foreign substance on the electrode is separated and dropped by impacting the electrode with a hammer like an electrostatic precipitator can be considered.

Further, a water cleaning system in which water is sprayed on the electrode portion to clean foreign substances on the electrode is also conceivable.

[0010]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The feed screw mechanism system of the air cleaner described above is used in the electric discharge treatment section 6 having the coaxial structure as described above.
Even if it is applied to the cleaning of the linear electrode 10 constituting the above, the following problems occur.

That is, in this case, the cleaning member 16 passing through the linear electrode 10 is reciprocated along the linear electrode 10 as shown by the chain double-dashed line in FIG. When the feed screw mechanism is arranged in the tubular electrode 8, the feed screw mechanism disturbs the electric field in the tubular electrode 8 and also hinders the flow of the gas to be treated 4. The discharge treatment performance will be significantly impaired.

When the feed screw mechanism is arranged outside the cylindrical electrode 8, the cylindrical electrode 8 is provided with a slit through which an arm connecting the feed screw mechanism and the cleaning member 16 is inserted and which allows vertical movement.
Must be provided over substantially the entire length of the side surface of the discharge processing part 4. If this is done, the gas to be processed 4 will leak out from the slit, and the electric field will be disturbed at the slit part. Will significantly impair the discharge treatment performance.

In the case of the hammering method, since the mechanism can be arranged outside the cylindrical electrode 8, it is possible to prevent the discharge processing performance from being impaired, but there is a problem in the cleaning performance.
That is, if the foreign matter adheres to the linear electrode 10, it cannot be separated (removed) by hammering, resulting in insufficient cleaning.

In the case of the above water washing method, there is a problem that waste water treatment is required.

Therefore, the main object of the present invention is to provide an electrode cleaning device which can surely clean the linear electrode without deteriorating the discharge processing performance of the discharge processing section and in which drainage is not required. And

[0016]

A first electrode cleaning apparatus according to the present invention is applied to a discharge gas processing apparatus having a discharge processing section arranged vertically as described above, and the linear electrode A cleaning member that cleans the linear electrode and is vertically movable along the linear electrode, and a hanging thread that suspends the cleaning member from above the discharge processing unit, A winding device that is provided outside the electric discharge processing unit and reciprocates the cleaning member up and down by winding and unwinding the hanging thread (claim 1).

According to this electrode cleaning device, by winding the hanging thread by the winding device, the cleaning member passing through the linear electrode can be raised along the linear electrode, and By carrying out, the cleaning member can be lowered along the linear electrode by its own weight. In this manner, by reciprocating the cleaning member up and down along the linear electrode, foreign matter attached to the linear electrode can be mechanically scraped off and removed by the cleaning member. Cleaning can be performed reliably.

Moreover, since the winding device is provided outside the discharge processing part, it is possible to prevent the winding device from disturbing the electric field of the discharge processing part or obstructing the flow of the gas to be processed. Also, by winding the hanging thread,
Since the cleaning member can be positioned outside the discharge processing unit during the discharge processing, it is possible to prevent the cleaning member from disturbing the electric field of the discharge processing unit. Therefore, the provision of this electrode cleaning device does not impair the discharge processing performance of the discharge processing unit.

Further, since it is not a water washing system, drainage is not required.

The second electrode cleaning apparatus according to the present invention is applied to a discharge gas processing apparatus having a plurality of vertically arranged discharge processing sections as described above, and the linear shape of each discharge processing section is provided. A plurality of cleaning members that are respectively provided on the electrodes to clean each linear electrode, and that each linear electrode penetrates and can move up and down along each linear electrode, and a common cleaning member for the plurality of cleaning members. Each cleaning member is slidably hung, each cleaning member is hung from above each discharge processing unit, and one end of the hanging thread is fixed to the outside of the discharge processing unit. And a winding device that winds and unwinds the other end side of the hanging thread to collectively reciprocate the plurality of cleaning members up and down (claim). 2).

According to this electrode cleaning device, in addition to the same effects as the above-described effects of the first electrode cleaning device, the following effects are further exhibited. That is, one cleaning member
It is possible to reciprocate up and down collectively with a hanging thread of a book, and since only one winding device is required for a plurality of discharge processing units, the configuration of the electrode cleaning device can be maintained even if there are a plurality of discharge processing units. It can be simplified.

[0022]

1 is a schematic view showing an example of a discharge gas processing apparatus equipped with an electrode cleaning device according to the present invention. FIG. 2 is a P view of FIG. 1. FIG. 3 is an enlarged plan view showing the discharge processing unit and the cleaning member of FIG. 1. The same or corresponding parts as those of the device shown in FIG. 16 are designated by the same reference numerals, and the differences from those are mainly described below.

The electrode cleaning device 20 is applied to the discharge processing section 6 arranged vertically as described above, and includes the cleaning member 22, the hanging thread 24, and the winding device 26.
It has and.

The cleaning member 22 is for scraping off and cleaning foreign matter adhering to the linear electrode 10 of the electric discharge processing section 6, and has a hole 23 (see FIG. 3) and the linear electrode 1 is provided there.
0 penetrates. The cleaning member 22 can move up and down along the linear electrode 10 as shown by an arrow C. That is, it can slide up and down in contact with the linear electrode 10. Hole 23
Is disadvantageous in removing small foreign matters if it is made larger than the linear electrode 10, so it is preferable to make it smaller in the range in which the cleaning member 22 can move up and down.

The cleaning member 22 is made of, for example, iron, stainless steel, copper, copper alloy or the like, but is not limited to this. The weight of the cleaning member 22 is, for example, about 100 g to 200 g, but the weight is not limited to this, and a weight that can be easily moved up and down may be selected.

The hanging thread 24 suspends the cleaning member 22 from above the discharge processing section 6. In this example, two hanging threads 24 are hung in order to easily maintain the horizontal balance of the cleaning member 22. Not limited to this, one or the like may be used. The material of the hanging thread 24 is, for example, fluororesin, synthetic fiber, or the like, but is not limited to this and may be metal. A fishing line may be used as the hanging line 24. The hanging thread 24 does not necessarily have to be a literal thread, and may be a flexible wire, a string, or the like, or may be a thin band.

The winding device 26 is provided outside the electric discharge processing section 6, and winds and unwinds the hanging thread 24 to reciprocate the cleaning member 22 up and down. In this example, the winding device 26 includes a rotating shaft 28 and a hanging thread 2 attached to the rotating shaft 28.
4 and the take-up pulley 30 for taking up
, A reversible electric motor 36 that rotates in both forward and reverse directions, an insulating shaft 34 that transmits the rotation of the electric motor 36 while electrically insulating it, and a rotation ratio that changes the rotation of the insulating shaft 34. (Reducing speed) and transmitting to the rotating shaft 28.

It is preferable that the winding device 26 is provided at a position where it does not obstruct the flow of the gas to be processed 4 and avoids just above the discharge processing portion 6. More specifically, in this example, the rotary shaft 28 and the take-up pulley 30 are arranged as shown in FIG.
It is arranged in a place avoiding directly above the discharge processing unit 6. Therefore, in this example, the hanging thread 24 is attached to the upper electrode support rod 12.
A guide pulley 38 for changing the direction of is provided. Of course, the speed reducer 32, the insulating shaft 34, and the electric motor 36 are also
It is arranged at a position where the flow of the gas to be treated 4 is not obstructed.

An example of a method of operating the electrode cleaning device 20 will be described. At the time of the discharge processing of the gas to be processed 4 in the discharge processing section 6, the hanging thread 24 is wound by the winding device 26 to discharge the cleaning member 22. It is held outside the processing unit 6 at a position (upper position A) that does not interfere with the discharge processing of the gas 4 to be processed in the discharge processing unit 6. It should be noted that the electric motor 36 does not have to be constantly running in order to hold the cleaning member 22 in the upper position A. Reducer 3
Since 2 usually has a position holding function, it may be used.

At the time of cleaning the linear electrode 10, the discharge processing section 6
When the electric discharge is stopped, the electric motor 36 is operated to rotate the take-up pulley 30, and the hanging thread 24 is fed out, the cleaning member 22 descends along the linear electrode 10 by its own weight. When the cleaning member 22 reaches the outermost bottom point B below the electric discharge processing unit 6, the electric motor 36 and the winding pulley 30 are reversed to wind the hanging thread 24 to move the cleaning member 22 along the linear electrode 10. To raise.

In this way, the cleaning member 22 is reciprocated up and down along the linear electrode 10 to remove foreign matter (see foreign matter 11 in FIGS. 6 and 7) attached to the linear electrode 10. Since it can be mechanically scraped off and removed, the linear electrode 10 can be reliably cleaned. The number of times the cleaning member 22 is reciprocated may be appropriately determined depending on the foreign matter adhesion state, the foreign matter removal state, and the like.

When the cleaning of the linear electrode 10 is completed, the discharge process may be performed with the cleaning member 22 returned to the upper position A and held.

According to the electrode cleaning device 20, as described above, since the foreign matter attached to the linear electrode 10 can be directly scraped off by the cleaning member 22, it is different from the hammering method described above. It is possible to reliably clean the linear electrode 10.

Moreover, the winding device 26 is provided with the discharge processing section 6
Since the winding device 26 is provided outside the device, it is possible to prevent the winding device 26 from disturbing the electric field of the discharge processing unit 6 or obstructing the flow of the gas to be processed 4. Further, by winding the hanging thread 24, the cleaning member 22 can be positioned outside the discharge processing unit 6 during the discharge processing, so that the cleaning member 22 can be positioned.
It is also possible to prevent the electric field of the discharge processing unit 6 from being disturbed. Therefore, even if the electrode cleaning device 20 is provided, unlike the above-described device of the feed screw mechanism type, the discharge processing performance of the discharge processing unit 6 is not impaired.

Further, since it is not a water washing system, drainage is not required.

The discharge processing unit 6 may have a plurality of discharge processing units 6 arranged side by side in order to enhance the processing capacity for the gas 4 to be processed. In that case, it is not always necessary to provide as many electric motors 36 as drive sources as the number of discharge processing units 6. For example, a plurality of take-up pulleys 30 may be arranged on one rotating shaft 28, or a plurality of rotating shafts 28 may be arranged to distribute the driving force by a gear box or the like, or they may be combined. Is also good. Alternatively, FIG.
A structure such as the example described with reference to FIG. 5 may be adopted, and by doing so, the configuration of the electrode cleaning device 20 can be further simplified.

As means for assisting the lowering of the cleaning member 22,
As in the example shown in FIG. 4, a clutch 42 is provided between the rotary shaft 28 and the speed reducer 32, and when the cleaning member 22 is lowered, the clutch 42 is disengaged to reduce the position holding force of the speed reducer 32. The rotating shaft 28 to which the take-up pulley 30 is attached may be opened, and the cleaning member 22 may be lowered by using only the weight of the cleaning member 22.

In the discharge processing section 6 as described above, the cylindrical electrode 8 is normally on the ground side and the linear electrode 1 is provided as in this example.
0 is the high voltage side. Therefore, since the cleaning member 22 and the like are also positioned on the high voltage side, a high voltage is applied as a measure to prevent the high voltage surge voltage from being applied to the electric motor 36 by the application of the high voltage during the discharge process and causing the failure. It is preferable to ensure that the voltage section and the electric motor 36 are electrically insulated. In that case, the linear electrode 10 and the electric motor 36 are
Since there is a possibility of being electrically connected via the cleaning member 22, the hanging thread 24, the winding pulley 30, the rotating shaft 28 and the speed reducer 32, electrical insulation will be taken in the middle of a series of devices. Therefore, in the example of FIG. 1, an insulating shaft 34 is provided between the speed reducer 32 and the electric motor 36 for electrical insulation.

Alternatively, as in the example shown in FIG. 5, an air motor 44 that replaces the electric motor 36 may be used so that the failure due to the surge voltage of the motor itself can be ignored. By doing so, the insulating shaft 34 is not required, so that the winding device 26 and thus the electrode cleaning device 20 and the discharge gas treatment device 2 can be downsized.

In the case of the above structure, the linear electrode 10
When the foreign matter is strongly adhered to the cleaning member 22, there is no possibility that the cleaning member 22 will be caught by the foreign matter when it descends and stop (it will not descend due to its own weight). According to the result of measurement by actually scraping off the foreign matter adhered to the linear electrode 10, the force for scraping off the foreign matter (strengthening strength) is 50
It was found that it was about gf or more, and about 4 to 5 kgf at the maximum. When the cleaning member 22 is made of the above-described material (iron, stainless steel, copper, copper alloy, etc.) that is normally used for machine parts, the weight of the cleaning member 22 is calculated from its normal volume and specific gravity. For example, as described above, 100-200g
It will be about. Just lowering it by its own weight may result in insufficient power. As a countermeasure in such a case, at least one of the volume and the specific gravity of the cleaning member 22 may be made larger to make the cleaning member 22 heavier, but as shown in FIG. Alternatively, a structure in which the body portion 46 and the scraper portion 54 are divided may be adopted.

More specifically, the body portion 46, in this example, has a hole 48 larger than the hole 56 of the scraper portion 54.
It has a cylindrical shape having. The upper part thereof has a conical recess 50. Several guide pins 52 are provided upright on the periphery thereof. The hanging thread 24 described above is coupled to the upper portion of the body portion 46.

The scraper portion 54 is fitted to the upper portion of the body portion 46 and has a half-split (two-split) structure.
As shown by the arrow E in FIG. 6, it can slide upward and outward (that is, obliquely upward). More specifically, in this example, the scraper portion 54 has a body portion 4 at a lower portion thereof.
6 has a conical convex portion 58 that fits in the concave portion 50. A hole 56 is formed in the central portion so that the linear electrode 10 can pass therethrough. The hanging thread 24 and the guide pin 5 are provided on the periphery.
It has slotted holes 60 and 62 which allow the slide of each piece of the scraper part 54 while allowing 2 to pass therethrough.

FIG. 6 shows a state before the scraper portion 54 slides (opens). In this state, when the cleaning member 22 is further lowered as shown by the arrow C, the foreign matter 11 adhering to the linear electrode 10 cannot be removed by the scraper part 54, and the scraper part 54 is caught. 7
As shown in FIG. 4, the body portion 46 can descend without being obstructed by the foreign matter 11, and accordingly, the scraper portion 54 slides diagonally upward and splits (opens) in two, so that the scraper portion 54 also moves into the foreign matter 11. Can avoid
As a result, the cleaning member 22 can be lowered without stopping.

The foreign matter 11 can be scraped off when the cleaning member 22 is pulled up. That is, the cleaning member 2
When pulling up 2, the scraper portion 54 is in a closed state and does not open as shown in FIG. 6, so that the foreign matter 11 can be reliably scraped off by the peripheral portion of the hole 56.
At this time, the torque value of the electric motor 36 (or the air motor 44) may be selected so that the foreign matter 11 can be scraped off without stopping the lifting of the cleaning member 22. Since the force required for scraping off the foreign matter 11 is as described above, a torque value obtained by the commercially available electric motor 36 or the air motor 44, which is easily available, can be sufficiently used.

According to the cleaning member 22 having such a divided structure, the cleaning member 2 does not have to be particularly heavy.
It is possible to reliably remove the foreign material 11, that is, clean the linear electrode 10, while preventing the foreign material 11 from being caught by the foreign material 11 and stopping.

8 and 9 show a discharge gas treatment device 2
However, an example of the case where a plurality of the discharge processing units 6 as described above arranged in a line with each other is provided is shown. In FIGS. 8 and 9,
Although only two discharge processing units 6 are shown for simplification of the drawing, the number may be more than that. In the following, in order to avoid redundant description, differences from the example shown in FIGS. 1 to 7 will be mainly described.

The above-mentioned cleaning member 22 is provided on the linear electrode 10 of each discharge processing section 6, and each cleaning member 22 moves up and down along each linear electrode 10 as shown by an arrow C. It is possible.

One end of each of the plurality of cleaning members 22 is fixed to the fixing portion 64, and the other end of each of the cleaning members 22 slides on one common hanging thread 24 hung on the winding pulley 30 of the winding device 26. And is hung from above each of the discharge processing units 6.

More specifically, a guide for changing the direction of the hanging thread 24 is provided on the side portion of the electrode support rod 12 arranged above each of the electric discharge treatment parts 6 above each of the electric discharge treatment parts 6. Two pulleys (constant pulleys) 38 are provided for each discharge processing unit 6.

In this example, on the upper part of each cleaning member 22,
As shown in an enlarged manner in FIG. 10, while suspending the cleaning member 22 through the hanging thread 24, one wheel 66 on which the hanging thread 24 can slide is provided on the left and right. Each wheel 6
6 and each of the guide pulleys 38 are provided at positions corresponding to each other in the vertical direction. For each wheel 66, it is preferable to adopt a material, a surface finish, etc., on which the hanging thread 24 can slide more easily. For example, it is preferable that each wheel 66 is formed of a fluororesin or one whose surface is coated with a fluororesin.

Then, one hanging thread 24, one end of which is fixed to the fixing portion 64 provided at the end of the electrode support rod 12,
Each wheel 6 of each cleaning member 22 is hung on each guide pulley 38.
6, and the other end of the hanging thread 24 is hooked (connected) to the winding pulley 30 of the winding device 26.

If the number of the rings 66 is two as described above, the hanging thread 24 may hit the linear electrode 10 as shown by the chain double-dashed line in FIG. Nevertheless, as described above, if the weight of the cleaning member 22 is selected to be easy to move up and down, there is no particular problem. Further, a third ring 66 is provided beside the linear electrode 10, and the hanging thread 24 is also passed through the third ring 66. As shown by the solid line in FIG.
You may avoid hitting.

The winding device 26 is provided outside the electric discharge processing section 6 and winds and unwinds the other end side of the hanging thread 24, so that the plurality of cleaning members 22 are collectively indicated by arrows. As shown in C, it reciprocates up and down. The winding device 26 shown in FIG.
The winding device 26 shown in FIG.
It has the rotating shaft 28, the winding pulley 30, the speed reducer 32, the insulating shaft 34, and the electric motor 36 as described above.
The winding device 26 is also provided at a position where it does not obstruct the flow of the gas 4 to be processed, avoiding directly above each discharge processing portion 6.

An example of the operation of this electrode cleaning device 20 is shown in FIGS.
The difference from the electrode cleaning device 20 shown in FIG. 3 will be mainly described. When the winding thread 26 is wound by the winding device 26, the hanging thread 24 winds while sliding on the loop 66 of each cleaning member 22. As a result, the entire length of the hanging thread 24 is shortened, so that each cleaning member 22 ascends along each linear electrode 10. Thereby, the plurality of cleaning members 2
2 can be raised collectively. Note that holding each cleaning member 22 at the upper position A is as described above.

When the take-up device 26 is operated to rotate the take-up pulley 30 to pay out the hanging thread 24, the entire length of the hanging thread 24 becomes long.
Moves down along each linear electrode 10 due to its own weight.
At this time, the hanging thread 24 is fed while sliding on the portion of the ring 66 of each cleaning member 22. As a result, the plurality of cleaning members 22 can be collectively lowered. The reversal of each cleaning member 22 at the lowest point B is as described above.

In this way, each cleaning member 22 can be reciprocally moved up and down collectively along each linear electrode 10, so that the foreign matter attached to each linear electrode 10 is mechanically moved by each cleaning member 22. It can be scraped off and removed, and each linear electrode 10 can be reliably cleaned.

Also in the case of this electrode cleaning device 20, as described above, since the foreign matter attached to the linear electrode 10 can be directly scraped off by the cleaning member 22, unlike the above-mentioned hammering method. It is possible to reliably clean each linear electrode 10.

Moreover, the winding device 26 is provided with the discharge processing section 6
It is possible to prevent the winding device 26 from disturbing the electric field of each discharge processing unit 6 or obstructing the flow of the gas to be processed 4 because the winding device 26 is provided outside. Further, by winding the hanging thread 24, each cleaning member 22 can be positioned outside the discharge processing unit 6 during the discharge processing, so that the cleaning member 22 can be prevented from disturbing the electric field of the discharge processing unit 6. it can. Therefore, even if the electrode cleaning device 20 is provided, unlike the above-described device of the feed screw mechanism type, the discharge processing unit 6 is provided.
Does not impair the discharge processing performance of.

Further, since it is not a water washing system, drainage is not required.

Further, in this electrode cleaning device 20, a plurality of cleaning members 22 can be collectively reciprocated up and down by a single hanging thread 24, and the winding device 26 can be wound around the plurality of discharge processing units 6. Since only one is required, moreover, it is possible to arrange a plurality of take-up pulleys on one rotary shaft, or to arrange a plurality of rotary shafts to distribute the driving force by a gear box etc. Since the configuration of the device 26 can be simplified, the configuration of the electrode cleaning device 20 can be further simplified even if there are a plurality of discharge processing units 6. Therefore, the cost can be reduced.

Instead of each wheel 66, a small pulley may be provided and the hanging thread 24 may be hung on the pulley. In such a case, the hanging thread 24 (each cleaning member 22 can be changed from a different viewpoint). ) Sliding becomes smoother. The same applies to the example of FIG. 14 described later.

The winding device 26 is shown in FIG.
You may employ the thing shown in. The winding device 2 of FIG.
6 is an example in which a clutch 42 is provided as in FIG. 4,
The winding device 26 of FIG. 13 is an example using the air motor 44 as in the case of FIG. 5, and the reason for doing so is as described above.

Also, in the case of the electrode cleaning device 20 shown in FIGS. 8 and 9, each cleaning member 22 has the body portion 46 and the scraper portion 54 as described in detail with reference to FIGS. 6 and 7. You may employ the structure divided into and. To slidably hang such a cleaning member 22 on the hanging string 24, for example, as shown in FIGS. 14 and 15, 2 through the two elongated holes 60 of the scraper portion 54, respectively.
The pillars 68 of a book are erected on the upper part of the body part 46, and each pillar 6
The loops 66 may be provided on the upper part of 8 and the hanging thread 24 may be passed through the respective loops 66. Others are the same as above.

The gas to be treated 4 with respect to the discharge treatment section 6
It is preferable to supply the above from the top to the bottom as in the above-mentioned examples from the viewpoint of preventing the dust from being rolled up, but it may be supplied from the bottom to the top.

Further, although the cylindrical electrode 8 of the discharge processing section 6 is cylindrical in each of the above examples, its sectional shape is not limited as long as it is cylindrical. For example, it may be a rectangular tube. In addition, the term "cylindrical" is a broad concept including a tubular shape in this specification.

The cross-sectional shape of the linear electrode 10 of the discharge processing section 6 is not limited to the circular shape as in the above examples, but may be another shape. The shapes of the holes 23, 48 and 56 of the cleaning member 22 may be selected according to the shape. In addition, in this specification, the term “linear” means being sufficiently thinner than the cylindrical electrode 8, and is a broad concept including a rod shape.

[0067]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the invention, the linear electrode can be reliably cleaned without impairing the discharge processing performance of the discharge processing section, and drainage is not required.

According to the second aspect of the present invention, the linear electrodes of each of the discharge processing parts can be reliably cleaned without impairing the discharge processing performance of the plurality of discharge processing parts, and the drainage is not generated. Complete.

Furthermore, since a plurality of cleaning members can be reciprocally moved up and down collectively by a single hanging thread, and only one winding device is required for a plurality of discharge processing units, and moreover, only one winding member is required. Since the structure of the winding device can be simplified compared to the structure in which a plurality of winding pulleys are arranged on the rotating shaft of the device or the driving force is distributed by a gear box etc. Even if there are multiple processing units,
The configuration of the electrode cleaning device can be simplified.

According to the third aspect of the present invention, even if the cleaning member is not particularly heavy, it is possible to prevent the cleaning member from being caught by the foreign matter and stop, and to remove the foreign matter, that is, to clean the linear electrode. There is a further effect that can be surely performed.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of a discharge gas treatment device provided with an electrode cleaning device according to the present invention.

FIG. 2 is a P view of FIG.

FIG. 3 is an enlarged plan view showing a discharge processing unit and a cleaning member of FIG.

FIG. 4 is a diagram partially showing another example of the winding device.

FIG. 5 is a view partially showing still another example of the winding device.

FIG. 6 is a plan view (A) and a sectional view (B) showing another example of the cleaning member, showing a state before the scraper portion slides.

FIG. 7 is a plan view (A) and a sectional view (B) showing another example of the cleaning member, showing a state after the scraper portion has slid.

FIG. 8 is a schematic side view showing another example of the discharge gas treatment device including the electrode cleaning device according to the present invention.

9 is a schematic plan view of the device of FIG.

10 is an enlarged view showing an example of a cleaning member for the apparatus of FIG. 8, (A) being a front view and (B) being a side view.

11 is an enlarged plan view showing another example of the cleaning member for the apparatus of FIG. 8. FIG.

12 shows another example of a winding device for the device of FIG.

13 is a diagram showing yet another example of a winding device for the device of FIG.

FIG. 14 is a cross-sectional view showing still another example of the cleaning member for the apparatus of FIG. 8, showing a state before the scraper part slides.

FIG. 15 is a side view showing an enlarged part of the ring in FIG.

FIG. 16 is a schematic view showing an example of a discharge gas treatment device.

[Explanation of symbols]

2 Discharge gas treatment device 4 Gas to be treated 6 Discharge processing unit 8 Cylindrical electrode 10 linear electrodes 11 foreign matter 20 Electrode cleaning device 22 Cleaning member 24 hanging thread 26 Winding device 46 Body 54 Scraper section

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hitoshi Shibano             47 Umezutakaunecho, Ukyo-ku, Kyoto-shi, Kyoto             Inside Shin Denki Co., Ltd. (72) Inventor Shigeru Kato             47 Umezutakaunecho, Ukyo-ku, Kyoto-shi, Kyoto             Inside Shin Denki Co., Ltd. F-term (reference) 4C080 AA09 BB02 CC01 QQ11                 4D054 AA20 BB02 BB15 CA01 DA04

Claims (3)

[Claims] 1. A vertical structure for treating a gas to be treated by generating a pulse corona discharge in a gas to be introduced between the electrodes, which has a structure in which linear electrodes are coaxially arranged in a cylindrical electrode. In a device for cleaning the linear electrode of a discharge gas treatment device provided with a discharge processing section arranged in a facing direction, the linear electrode is cleaned, and the linear electrode penetrates along the linear electrode. A vertically movable cleaning member, a hanging thread that suspends the cleaning member from above the discharge processing section, and a winding thread that is provided outside the discharge processing section and that winds up the hanging thread. An electrode cleaning device for a discharge gas treatment device, comprising: a winding device that vertically reciprocates the cleaning member. 2. A vertical electrode having a structure in which a linear electrode is coaxially arranged in a cylindrical electrode, and a pulse corona discharge is generated in a gas to be treated introduced between both electrodes to process the gas to be treated. An apparatus for cleaning the linear electrodes of each discharge processing unit of a discharge gas processing apparatus including a plurality of discharge processing units arranged in a facing manner, wherein each linear electrode of each of the discharge processing units is provided to clean each linear electrode. A plurality of cleaning members that are penetrated by each linear electrode and that can move up and down along each linear electrode; and a plurality of cleaning members that are common to the plurality of cleaning members and that are slidable so that the cleaning members slide. And suspending each cleaning member from above each of the discharge processing parts, and one end of which is fixed, and a suspending thread which is provided outside the discharge processing part and which is provided on the other end side of the suspending thread. By winding and unwinding And a winding device that collectively reciprocates the plurality of cleaning members up and down. 3. The cleaning member comprises a tubular body and a half-cracked structure that is fitted to the upper portion of the body and has a half-split structure. The electrode cleaning device of the discharge gas treatment device according to claim 1 or 2, further comprising a scraper portion that can slide outward.