JP3448446B2 - Dust collection electrode for electric dust collector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a dust collecting electrode suitable for use in an electric dust collector that collects fine dust such as fume dust generated during welding work and oil mist.

[0002]

2. Description of the Related Art In order to collect fine dust such as fumes, smoke, or mist generated during arc welding work, a structure such as that disclosed in Japanese Utility Model Publication No. 2-31156 has hitherto been used. An electric dust collector using a dust collecting electrode is used.

[0003]

However, since the above-mentioned conventional dust collecting electrode is complicatedly composed of many parts, each work such as assembling work and disassembling, cleaning and reassembling at the time of maintenance. There is a problem that it takes a lot of time and labor, and since each of these works is a dirty work, there is a problem that the work becomes more and more complicated. There is a problem that the cost is further increased due to the addition of a treatment facility for collecting and treating the washing water and the like.

Therefore, a technical object of the present invention is to provide a dust collecting electrode for an electrostatic precipitator which has a simple structure and can easily perform various operations such as assembling and maintenance and can be manufactured and used at a low cost. Is to provide.

[0005]

[Means for Solving the Problems] Means taken in the present invention for solving the above technical problems are as follows.

[0006] The fine dust charged in the charging section is collected in the collecting section.
At least one dust collecting electrode with positive and negative electrodes
It is an electric dust collector that absorbs and collects,

(1) The dust collecting electrode is a thin positive electrode
Insulation between the conductive material and the thin conductive material used as the negative electrode
Interpose a layer and cover both the front and back sides with a thin insulating layer.
Ventilation between one electrode material with a multi-layered electrode material
Gap between the electrode materials as well as the insulating
It is wound in a roll so that
It must be placed so that the airflow can pass through it . (Claim 1)

(2) The above-mentioned breathable insulator has a rectangular cross section.
Or, it is formed into a round, substantially rod-like shape, while extending in the direction of air flow.
And line up at intervals along the winding direction
Place it like this . (Claim 2)

(3) The above dust collecting electrode is installed in an electrostatic precipitator.
A cartridge type that can be exchanged with the collection unit .
(Claim 3)

(4) The conductive material has a thickness of 5 to 10
Use μm aluminum foil and sponge as a breathable insulator. (Claim 4)

According to the means of claim 1 described in the above (1), the positive electrode and the negative electrode can be obtained by simply rolling the multi-layered electrode material into a roll shape with the breathable insulator sandwiched therebetween. Since it is possible to provide a dust collecting electrode in which the electrodes are alternately arranged side by side and there is no spark between the electrodes, and the number of parts is small and the overall configuration and assembly are easy, it is possible to reduce the manufacturing cost. Since the manufacturing cost is low, you can easily replace it and dispose of it, thus eliminating the need for troublesome maintenance work and special equipment such as degreasing liquid and cleaning equipment, and greatly reducing the cost of use. To enable.

According to the second aspect of the invention described in (2) above, the substantially rod-shaped breathable insulator sandwiched side by side at intervals ensures proper spacing between the positive electrode and the negative electrode. On the other hand, the air resistance of the fine dust flowing between these two electrodes can be minimized, and the excellent charging effect and dust collecting effect can be exhibited.

According to the third aspect of the invention described in (3) above, the dust collecting electrode formed by rolling the multi-layered electrode material into a roll shape is formed in accordance with the shape of the collecting portion (electrode chamber). Not only can it be deformed into a free shape for storage, but also because it is configured as a cartridge, it makes replacement work (attachment and detachment work) for the collection part very easy, while the used dust collection electrode is Allows for disposable disposal as it is.

According to the means of claim 4 described in the above (4), since the thin aluminum foil is used as the conductive material,
A flexible electrode material that can be easily rolled into a roll shape can be provided, and since a sponge is used as a breathable insulator, the air resistance of fine dust is as small as possible, and they are arranged side by side alternately. It is possible to provide an electrode material in which the distance between both electrodes is properly secured, and further it is possible to provide a dust collecting electrode that uses aluminum foil and sponge at an extremely low cost.

As described above, the above (1)-
The technical problems described above can be solved by the means described in (4), and the problems of the conventional technology can be solved.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the above-described dust collecting electrode for an electrostatic precipitator according to the present invention will be described in detail below with reference to the accompanying drawings.

1 and 2 are perspective views showing an example of the structure of an electric precipitator using a dust collecting electrode according to the present invention. In FIG. 1, 1 is an electric precipitator and 1A is fine dust. 2 is a charging portion for charging the fine dust that is sucked into the body from the suction port 1A, and 3 is a collecting unit constituted by using a plurality of cartridge-type dust collecting electrodes 20 ... According to the present invention. Part, 1B is an exhaust port for purified air in which fine dust is collected, 1D is a hopper part in which fine dust collected by the dust collecting electrode 20 is dropped, and 1C is an outlet for the dropped fine dust. .

On the other hand, in the electrostatic precipitator shown in FIG. 2, the charging portion 5 is provided inside the charging chamber 4 having the suction port 4A for fine dust, while the duct 6 connected to the discharge port 4B of the charging chamber 4 is provided. The dust collecting electrodes 20 of the cartridge type according to the present invention are housed in series inside to form the collecting section 7, and
An exhaust port 8A for purifying air, a hopper 8C for dropping the collected fine dust, and an exhaust part 8 provided with an outlet 8B for the exhaust port 8A are attached to the lower end of the duct 6. The electrostatic precipitator is also configured to reliably collect fine dust, such as fumes and mist, which cannot be collected by an ordinary bag filter, by using the dust collecting electrodes 20 ...

Next, a concrete example of the structure of the dust collecting electrode 20 according to the present invention will be described with reference to FIGS. 3 to 7.

FIG. 3 is an enlarged cross-sectional view of a part of the electrode material 10 constituting the dust collecting electrode 20, in which 11 and 12 are for the positive electrode and the negative electrode. Two thin conductive materials, 13 are these two conductive materials 11, 1
Intermediate insulating layers 14 and 15 interposed between the two are thin surface insulating layers that cover the surfaces of the two conductive materials 11 and 12, and the conductive materials 11 and 12 have a thickness of 5 ~
Aluminum foil of about 10 μm is used, polyethylene or polyester having a thickness of about 90 to 100 μm is used for the intermediate insulating layer 13, and the surface insulating layers 14 and 15 for suppressing spark discharge have a thickness of about 10 to 100 μm. Polyethylene or polyester having a thickness of about 10 to 20 μm is used, and the materials used for forming each of these members and the thickness thereof are merely examples.

As described above, the electrode material 10 having a multilayer structure of 5 layers as a whole is made to have a flexible structure which can be freely bent. In FIG. FIG. 2 is a diagram illustrating a configuration example of the dust collecting electrode 20 according to the present invention, which is formed by rolling the whole into a spiral roll in a state of sandwiching, and as the breathable insulator 17, for example, a thickness of about 70 to 130 μm A coarse sponge is used, which is an example of an implementation.

In FIG. 7, a plurality of dust collecting electrodes 20 ... Which are formed in a spiral roll shape as shown in FIG. 6 are housed in a cartridge 18 and replaced with the collecting portion 3 of the electrostatic precipitator 1 shown in FIG. 1 shows an example of the structure of a cartridge type dust collecting electrode configured so that it can be freely incorporated, and the shape of the cartridge 18 and the number of dust collecting electrodes 20 fitted therein are arbitrary, The thing is an example.

The above-mentioned dust collecting electrode 20 has the structure shown in FIG.
There is also a case where they are used one by one by being fitted in the inside of the duct 6 in series, as shown in FIG.

In the dust collecting electrode 20 shown in FIG. 6 described above, the breathable insulator 17 is sandwiched over the entire length of the electrode material 10 which is rolled into a spiral roll, but the electrode material 10 shown in FIG. A large number of substantially rod-shaped breathable insulators 16 (made of sponge) having a square or round cross section are formed on one side surface of the electrode material 10 in parallel with a direction in which fine dust flows and at regular intervals. The electrode materials 10 are arranged side by side, and the electrode material 10 is rolled into a spiral roll as shown in FIG. 5 to form a dust collecting electrode 20 having a cylindrical outer shape.

In FIG. 4, V is the width of the electrode material 10 and X is
And Y are the thickness and width of the breathable insulator 16 formed in a substantially rod shape,
Z represents the pitch interval of the air-permeable insulators 16 arranged in parallel, and by the way, these dimensions are V = 165, X =
6, Y = 6, Z = 30 (all are mm), but it goes without saying that these dimensions are merely examples.

Further, in the dust collecting electrode 20 rolled into a roll shape shown in FIG. 5, the breathable insulator 16 is not present in the curved portions on the left and right sides because the weight of the breathable insulator 16 itself. In order to prevent the parallel gap between the left and right curved portions from being deformed or contacted with each other, the electrode material 10 is bonded to the horizontal gap in the center by interposing the breathable insulators 16 ... Only by doing so, the elasticity provided in itself holds the parallel distance between the left and right curved portions.

A plurality of the dust collecting electrodes 20 configured as described above are housed in a cartridge 18 as shown in FIG. 7 and are used by being attached to the collecting portion 3 shown in FIG.
As shown in FIG. 2, there is a case where the ducts 6 are inserted into the duct 6 one by one and used, which is the same as the use example of the dust collecting electrode 20 shown in FIG. 6 described above. The mode of use is arbitrary.

Since the dust collecting electrode for an electrostatic precipitator according to the present invention has the above-described structure, the dust collecting electrode 20 in which the positive electrode and the negative electrode are alternately arranged by rolling the electrode material 10 into a spiral roll shape ... As shown in FIG. 1 or FIG. 2, the fine dust charged in each charging unit 2 or 5 is used by incorporating it into each collecting unit 3 or 7 of the electrostatic precipitator. It can be adsorbed and collected when passing through the inside of 20.

[0029]

As described above, according to the dust collecting electrode for an electrostatic precipitator of the present invention, two conductive materials such as aluminum foil, which are used as electrodes of the dust collecting electrode, and polyethylene or polyester, for example, are used. Such a thin insulator and a breathable insulator such as a sponge that secures the gap between the electrodes can be used by rolling it into a roll shape, which makes the structure much better than conventional dust collecting electrodes. It is simple and can reduce the manufacturing cost, and because of the low manufacturing cost, it can be used as a disposable cartridge and the advantages such as maintenance can be greatly simplified. Combined with the fact that it is easy to handle, it is suitable for use in an electrostatic precipitator.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an electrostatic precipitator using a dust collecting electrode according to the present invention.

FIG. 2 is a perspective view showing another example of the electrostatic precipitator using the dust collecting electrode according to the present invention.

FIG. 3 is a cross-sectional view showing an enlarged part of an electrode material used in the present invention.

FIG. 4 is a perspective view illustrating the structure of the electrode material used in the present invention.

FIG. 5 is a side view of a dust collecting electrode configured using the electrode material shown in FIG.

FIG. 6 is a side view illustrating another example of the dust collecting electrode according to the present invention.

7 is a configuration diagram showing a state in which the dust collecting electrode shown in FIG. 6 is put in a cartridge.

[Explanation of symbols] 1 Electric dust collector 2,5 Charged part 3,7 Collection part 10 electrode material 11 Conductive material for positive electrode 12 Conductive material for negative electrode 13 Intermediate insulation layer 14,15 Surface insulating layer 16 Bar-shaped breathable insulator 17 Breathable insulation 18 cartridges 20 Dust collecting electrode

Continuation of the front page (56) References Japanese Unexamined Patent Publication No. 1-304062 (JP, A) Japanese Unexamined Patent Publication No. 8-323237 (JP, A) Japanese Unexamined Patent Publication No. 2-144162 (JP, A) , U) Jitsuko Sho 39-26753 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B03C 3/00-3/88

Claims (4)

(57) [Claims] 1. A collection unit for collecting fine dust charged by the charging unit.
An electrical dust collector for sucking collected with at least one collection electrode less with a positive electrode and the negative electrode in, the dust collecting electrode, a thin conductive material and the negative electrode to be a positive electrode
An insulating layer between the thin conductive material, and
A multi-layered electrode in which both front and back surfaces are covered with a thin insulating layer
One piece of material is interposing a breathable insulator between the electrode materials
Along with the electrode material in a roll so that a gap is formed
It is rolled and placed so that the airflow passes through the gap.
A dust collecting electrode for an electrostatic precipitator, which is characterized by being 2. The above-mentioned breathable insulator having a square or circular cross section.
While forming in a substantially rod-shaped mold, it extends in the flow direction of the air flow.
And line up at intervals along the winding direction.
The dust collecting electrode for an electrostatic precipitator according to claim 1, which is disposed. 3. The above-mentioned dust collecting electrode is used as a collecting portion of an electrostatic precipitator.
3. The dust collecting electrode for an electrostatic precipitator according to claim 1, wherein the dust collecting electrode is a replaceable cartridge type . 4. The dust collecting electrode for an electrostatic precipitator according to claim 1, wherein an aluminum foil having a thickness of 5 to 10 μm is used as a conductive material, and a sponge is used as a breathable insulator.