JPH10211448A - Dust collecting electrode of electric dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide dust collecting electrodes with a simple structure and whose assembling work and maintenance work can easily be carried out by producing electrode members with a multilayer structure by rolling the members while inserting a ventilative insulator between the electrode members, regarding dust collecting electrodes suitable to be used for electric dust collectors which collect dust such as finely powdered dust generated in a welding work. SOLUTION: The electrode members 10 with a multilayer structure and composing dust collecting electrodes 20 are produced by inserting an intermediate insulating layer 13 between two thin conductive materials 11, 12 for an anode and a cathode and coating respective surfaces of both conductive materials 11, 12 with thin surface insulating layers 14, 15. In this case, an aluminum foil with 5-10μm thickness is used for both conductive materials 11, 12, polyethylene or polyester with 90-100μm thickness is used for the intermediate insulating layer 13, and polyethylene or polyester with 10-20μm thickness is used for the surface insulating layers 14, 15. While sandwiching a sponge with, for example, 70-130μm thickness as the ventilative insulator 17, the electrode members 10 are spirally rolled to compose the dust collecting electrodes 20.

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 for collecting fine dust such as fume dust generated during welding work, oil mist and the like.

[0002]

2. Description of the Related Art In order to collect fumes, smoke, or fine dust such as mist generated during an arc welding operation, a structure such as that described in Japanese Utility Model Publication No. 2-3156 is conventionally used. An electric precipitator using a precipitating electrode is used.

[0003]

However, since the above-mentioned conventional dust collecting electrode is complicatedly constructed by using many parts, each operation such as disassembly, cleaning and reassembly at the time of assembling and maintenance is carried out. In addition, there is a problem that a lot of trouble is required, and since each of these operations is a dirt operation, there is a problem that the operation becomes more and more complicated, and there are many parts configurations and a degreasing solution. In addition, there is a problem that a processing facility for recovering the cleaning water and the like is required, and the cost is further increased.

Accordingly, a technical problem of the present invention is to provide a dust collecting electrode for an electric precipitator which has a simple structure, can easily perform various operations such as assembly and maintenance, and can be manufactured and used at low cost. To provide.

[0005]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

An electrostatic precipitator configured to adsorb and collect fine dust charged by a charging unit by passing the fine dust between a collection electrode in which a positive electrode and a negative electrode are alternately arranged.

(1) The above-mentioned dust collecting electrode is formed by interposing an insulating layer between two thin conductive materials for the positive electrode and the negative electrode, and covering both front and back surfaces with thin insulating layers. The electrode material having a multilayer structure is formed by rolling the whole into a roll shape with a breathable insulator interposed therebetween. (Claim 1)

(2) The air-permeable insulator sandwiched between the electrode materials to be rolled into a roll is formed into a substantially rod shape having a square or round cross section, and the substantially rod-shaped air-permeable insulator is sandwiched and arranged at intervals. The above-mentioned electrode material is rolled into a roll shape in a state where it is in a state of being formed. (Claim 2)

(3) The dust collecting electrode formed by rolling the electrode material into a roll is formed in a cartridge type which can be exchanged with respect to the collecting part of the electric dust collector. (Claim 3)

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

According to the means of the first aspect described in the above (1), the positive electrode and the negative electrode can be formed by simply rolling the electrode material having a multilayer structure into a roll shape with a gas-permeable insulator sandwiched therebetween. Are alternately juxtaposed, and a dust-collecting electrode having no spark between the electrodes can be provided.Since the number of parts is small and the entire configuration and assembly are simple, the manufacturing cost can be reduced. Because the manufacturing cost is low, it can be easily replaced and disposable, so troublesome maintenance work and special equipment such as a degreasing solution and a washing device are not required, and the use cost is greatly reduced. Enable.

According to the means according to the second aspect described in the above (2), the substantially rod-shaped air-permeable insulator sandwiched side by side at an interval properly secures the interval 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 it is possible to exhibit excellent charging effect and dust collecting effect.

According to the means of claim 3 described in the above (3), the dust collecting electrode formed by rolling the electrode material having a multilayer structure into a roll shape is adapted to the shape of the collecting portion (electrode chamber). Not only can it be deformed and stored in a free shape, but also because it is configured as a cartridge, it greatly facilitates the replacement work (removal work) for the collection part, while the used dust collection electrode can be used. It is possible to dispose it as disposable as it is.

According to the fourth aspect of the present invention, a thin aluminum foil is used as the conductive material.
It is possible to provide a flexible electrode material that can be easily rolled as a whole in a roll shape, and to use a sponge as a breathable insulator, so that the air resistance of the fine dust is as small as possible, and they are arranged alternately. It is possible to provide an electrode material in which an interval between the two electrodes is appropriately secured, and to provide an extremely inexpensive dust collecting electrode using an aluminum foil and a sponge.

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

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a dust collecting electrode for an electric precipitator according to the present invention.

FIGS. 1 and 2 are perspective views showing an example of the configuration of an electric precipitator using a dust collecting electrode according to the present invention. In FIG. 1, reference numeral 1 denotes an electric precipitator, and 1A denotes fine dust. 2 is a charging section for charging fine dust sucked into the machine body from the suction port 1A, and 3 is a collecting unit configured by using a plurality of cartridge type collecting electrodes 20 according to the present invention. , 1B is an exhaust port of the purified air in which the fine dust is collected, 1D is a hopper portion in which the fine dust collected in the dust collecting electrodes 20 is dropped, and 1C is an outlet of the dropped fine dust. .

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

Next, a specific example of the configuration of the dust collecting electrode 20 according to the present invention will be described with reference to FIGS.

FIG. 3 is a sectional view showing a part of the electrode material 10 constituting the dust collecting electrode 20 in an enlarged manner. In the drawing, reference numerals 11 and 12 denote the positive electrode and the negative electrode. The two thin conductive materials 13 are these two conductive materials 11, 1
The intermediate insulating layers 14 and 15 are thin surface insulating layers covering the respective surfaces of the two conductive materials 11 and 12 and have a thickness of 5 as the conductive materials 11 and 12. ~
Aluminum foil having a thickness 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 thicknesses of the surface insulating layers 14 and 15 for suppressing spark discharge are reduced. Polyethylene or polyester having a thickness of about 10 to 20 [mu] m is used, and the materials used for forming these members and the thickness thereof are all examples of implementation.

As described above, the electrode material 10 having a multilayer structure of five layers as a whole is made to have a flexible structure which can be freely bent. FIG. This is an example of the configuration of the dust collecting electrode 20 according to the present invention in which the entire structure is rolled into a spiral roll while sandwiching the air, and the air-permeable insulator 17 has a thickness of, for example, about 70 to 130 μm. A coarse sponge is used, but is an example of an implementation.

FIG. 7 shows a plurality of dust collecting electrodes 20... Formed in a spiral roll shape as shown in FIG. 6 housed in a cartridge 18 and exchanged with the collecting part 3 of the electric dust collector 1 shown in FIG. This shows an example of the configuration of a cartridge-type dust collecting electrode configured to be freely incorporated. The shape of the cartridge 18 and the number of dust collecting electrodes 20 fitted into the cartridge 18 are arbitrary, and Things are an example.

The above-mentioned dust collecting electrode 20 is similar to that shown in FIG.
As shown in (1), there may be cases where one of the ducts 6 is used by being fitted in series inside the duct 6, and the use state is arbitrary.

In the above-described dust collecting electrode 20 shown in FIG. 6, a gas permeable 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 air-permeable insulators 16 (made of sponge) having a square or round cross section are provided at a certain interval in parallel to the direction in which the fine dust flows on one side surface of the electrode material 10. As shown in FIG. 5, the electrode material 10 is rolled into a spiral roll to form a dust collecting electrode 20 having a cylindrical outer shape.

In FIG. 4, V is the width of the electrode material 10, X
And Y are the thickness and width of the breathable insulator 16 made in a substantially rod shape,
Z indicates the pitch interval between the air-permeable insulators 16 arranged in parallel, and these dimensions are V = 165, X =
6, Y = 6, Z = 30 (both are mm), but these dimensions are, of course, examples of embodiments.

In the dust-collecting electrode 20 rolled into a roll shape shown in FIG. 5, the absence of the air-permeable insulator 16 at the left and right curved portions is due to the weight of the air-permeable insulator 16 itself. In order to prevent deformation or contact in the parallel space between the left and right curved portions, the electrode material 10 is bonded to the horizontal space at the center with a multi-stage air-permeable insulator 16. In this case, the elastic space provided by itself makes it possible to maintain the parallel space between the left and right curved portions.

The dust collecting electrode 20 constructed as described above is housed in a cartridge 18 as shown in FIG. 7 and used by being attached to the collecting section 3 shown in FIG.
As shown in FIG. 2, there is a case in which each of the dust collecting electrodes 20 is used by being fitted into the inside of the duct 6, 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 electric dust collector according to the present invention has the above-described configuration, the electrode material 10 is rolled into a spiral roll to form a dust collecting electrode 20 in which positive electrodes and negative electrodes are alternately arranged. As shown in FIG. 1 or FIG. 2, the fine dust charged in each charging unit 2 or 5 is incorporated into each collecting unit 3 or 7 of the electrostatic precipitator so that the fine dust is It can be adsorbed and collected when passing through the inside of the 20.

[0029]

As described above, according to the dust collecting electrode for an electric precipitator according to the present invention, the dust collecting electrode is made of two conductive materials such as aluminum foil as electrodes, for example, polyethylene or polyester. Such a thin insulator, and a breathable insulator such as a sponge for securing the interval between the electrodes, can be configured by rolling this into a roll shape, the structure is very small compared to the conventional dust collection electrode It is simple and can reduce the manufacturing cost, and because of the low manufacturing cost, it can also exhibit the advantage of disposable use and greatly simplify various operations such as maintenance, and it is configured as a cartridge type. In combination with the fact that the handling is facilitated by this, it is perfectly suitable for use in an electric dust collector.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an electric precipitator using a precipitating electrode according to the present invention.

FIG. 2 is a perspective view showing another example of the electric precipitator using the precipitating electrode according to the present invention.

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

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

FIG. 5 is a side view of a dust collecting electrode formed 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 where the dust collecting electrode shown in FIG. 6 is placed in a cartridge.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric precipitator 2,5 Charging part 3,7 Collection part 10 Electrode material 11 Conductive material for positive electrode 12 Conductive material for negative electrode 13 Intermediate insulating layer 14,15 Surface insulating layer 16 Bar-shaped ventilation Insulating material 17 Breathable insulating material 18 Cartridge 20 Dust collecting electrode

Claims (4)

[Claims] 1. An electrostatic precipitator configured to adsorb and collect fine dust charged by a charging unit by passing the fine dust between a collection electrode in which a positive electrode and a negative electrode are alternately arranged. An electrode material having a multilayer structure in which an insulating layer is interposed between two thin conductive materials for a positive electrode and a negative electrode, and both front and back surfaces are covered with thin insulating layers, A dust collecting electrode for an electric dust collector, wherein the whole is rolled into a roll shape with a breathable insulator interposed therebetween. 2. An air-permeable insulator sandwiched between electrode materials to be rolled into a roll is formed into a substantially rod shape having a square or round cross-section, and the substantially rod-shaped air-permeable insulators are arranged and sandwiched at intervals. The dust collecting electrode according to claim 1, wherein the electrode material is rolled in a roll shape in a state. 3. A dust collecting electrode formed by rolling an electrode material into a roll shape, wherein the dust collecting electrode is configured in a cartridge type which is replaceable with respect to a collecting portion of an electric dust collector.
A dust collecting electrode for an electric dust collector according to the description. 4. The dust collecting electrode according to claim 1, wherein an aluminum foil having a thickness of 5 to 10 μm is used as the conductive material, and a sponge is used as the air-permeable insulator.