JPH11253836A - Impressed electrode structure for electric dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for laminating impressed electrode plates in a dust collecting unit of an electric dust collector. SOLUTION: The impressed electrode plate 3 is formed by covering both surfaces of a conductive member 1 with an insulating resin coating film 2. In such a case, the impressed electrode plates 3 to be laminated are mechanically fixed with each other, a hole for passing a shaft 4 through to electrically connect is bored, cuts are set around the hole 5 to form contact chips 7 into chrysanthemum shape, the insulating resin coating film at least on one surface of each contact chip 7 is stripped to make the impressed electrode plates 3 and the shaft 4 conductive and the laminated impressed electrode plates 3 are made conductive to each other through the shaft 4 by repeating the method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an applied electrode plate constituting a dust collecting unit of an electric dust collecting apparatus.

[0002]

2. Description of the Related Art Conventionally, an electrode of a dust collecting unit of an electric dust collecting device is a group of electrodes in which an applied electrode plate and a dust collecting electrode plate are alternately stacked at a constant interval. When the distance from the dust electrode plate is too large, the dust collection efficiency is reduced, and when the distance is too close, a problem of arc discharge occurs. Therefore, the distance between the electrodes has to be kept constant. Conventionally, as shown in FIG. 7, a method of using a flat metal electrode plate and maintaining a constant electrode plate distance via a spacer has been widely adopted. This method is the same not only for the application electrode plate but also for the dust collection electrode plate, but a conductive shaft for mechanically and electrically connecting the respective electrode plates is penetrated through the round hole of the electrode plate. Has penetrated the cylindrical spacer. Since the spacer is located between the adjacent electrode plates, the distance between the electrode plates is made constant, and the stacking is performed in this state to form a dust collection unit. On the other hand, there is an applied electrode plate in which a conductive member is coated on both sides with an insulating resin coating. This is a structure in which a conductive member having conductivity is coated with an insulating resin film. There is a dust collection unit in which the above and a metal duster are laminated via a metal spacer. Since the applied electrode plates are covered with an insulating resin coating and are electrically insulated from each other even when they are connected to each other with a spacer and a shaft, in order to make the applied electrode plates conductive, The insulating resin coating on the surface where the spacer is in contact with the applied electrode plate is peeled off. By doing so, the conductive member portion on the surface of the applied electrode plate from which the insulating resin coating has been peeled is electrically connected to the spacer, and the shaft penetrates and comes into contact with the spacer, so that the spacer and the shaft are electrically connected. Furthermore, since the conduction is performed on the peeling surface of the adjacent applied electrode plate via the spacer, the adjacent applied electrode plates are brought into a conductive state as a result. This is shown in FIG.
Shown in

[0003]

In the electrode structure of a conventional electric precipitator, a spacer is widely used in order to keep a constant distance between the applied electrode plate and the precipitating electrode plate. And the spacer molded on the electrode plate. In the case of a spacer as a part, the assembly is very complicated when assembling the dust collector due to the small number of parts and the large number of attachments. This is not good for workability and productivity, and is also a problem in terms of manufacturing cost. The use of an automated robot makes assembly easy, but has the drawback that this equipment investment is not small and cannot be easily introduced. Conventionally, a flat metal plate has been used for the application electrode plate and the dust collection electrode plate. Therefore, if a metal spacer is used, it is easy to connect both mechanically and electrically. On the other hand, a resin electrode plate has appeared as a new applied electrode plate. This is an application electrode plate in which a conductive member is coated on both sides with an insulating resin coating.
-023712. This method has a feature that the applied electrode plate is coated with a resin and does not use a metal plate. In addition, since it is coated with resin, to achieve conduction between the applied electrode plates,
Conventionally, there has been an embodiment as shown in FIG. 8 in which a part of the resin is peeled off and conductivity is provided by a metallic spacer. This is because the conductive member of the application electrode plate and the spacer are in contact with each other to obtain conductivity, so that it is easy to cause poor contact on the contact surface due to moisture or dust, thereby causing a problem of a reduction in dust collection efficiency. There was something. A method for ensuring the conductivity between the applied electrode plates has been expected.

[0004]

In order to solve the above-mentioned problems, the insulating resin coating is peeled off only around the through hole for connecting the applied electrode plates, and several cuts are made to form a chrysanthemum flower. . Then, when a shaft having a diameter larger than the through hole is penetrated from the side of the applied electrode plate from which the insulating resin coating has been peeled off, a chrysanthemum-shaped conductive member is turned up, and the applied electrode plate and the shaft are electrically connected by being pressed against the shaft, Further, the adjacent application electrode plates are also in contact with the shaft, and as a result, the application electrode plates have conductivity. In this way, all the applied electrode plates stacked are brought into a conductive state.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a dust collecting unit (10) having an applied electrode structure of the present invention, in which an applied electrode plate (3) and a dust collecting electrode plate (8) are alternately stacked.
The plurality of applied electrode plates (3) and the dust collecting electrode plate (8) are structurally and electrically connected by a conductive shaft (4) and a spacer (9), respectively.

FIG. 2 shows an application electrode plate (3). The conductive member (1) has a structure in which both surfaces are covered with an insulating resin coating (2), and a shaft () for laminating and fixing the application electrode plate (3). 4) is provided with a hole (5) penetrating therethrough.

FIG. 3 is an enlarged view of the periphery of the hole (5) of the application electrode plate (3). The insulating resin coating (2) is peeled off on one side in a concentric or almost concentric manner around the hole (5). I do. This one-sided peeling is a problem in strength. Since the conductive member (1) is thin and easily broken, the one-side insulating resin coating (2) is left, but the conductive member (1) has sufficient strength. If so, the insulating resin coating (2) may be peeled off on both sides. The diameter of the hole (5) is smaller than the diameter of the shaft (4). Further, several cuts (6) are made in the part to be peeled off to form a contact piece (7). The contact piece (7) can be elastically bent with the connection end with the application electrode plate (3) as a base end.
A cross-sectional view of this state is shown in FIG. 4, which is a cross-sectional view around the hole (5) in FIG.

FIG. 5 is a view showing a state in which the applied electrode plates (3) are stacked, and the shaft (4) is passed through the hole (5) in the direction of the arrow, and then the spacer (9) is passed through.
Further, the applied electrode plates (3) and the spacers (9) are alternately laminated, such as the applied electrode plates (3). This is shown in the sectional view of FIG. The shaft (4) penetrates the spacer (9) and further penetrates the hole (5) of the application electrode plate (3). Since the diameter of the hole (5) is smaller than that of the shaft (4), the contact piece (7) around the hole (5) is bent in the traveling direction of the shaft (4). At this time, the conductive member (1) of the contact piece (7) is pressed against the conductive shaft (4). When the shaft (4) is pushed in, it hits the next applied electrode plate (3), and the contact piece (7) there and the shaft are electrically connected. In this way, when the applied electrode plates (3) and the spacers (9) are alternately stacked one after another, each applied electrode plate (3) becomes conductive through the shaft (4). Thus, when a high potential is applied to the applied electrode plates (3), all the applied electrode plates (3) are applied at the same potential.

Here, since the applied electrode plates (3) are in a conductive state via the shaft (4), the spacer (9) does not necessarily need to be made of a conductive material, but is made of an insulator. Is enough, resin spacer (9)
Can be

[0010]

The above embodiment has the following effects. Conventionally, a metal plate is used for the applied electrode plate and the dust collecting electrode plate. However, an applied electrode plate in which a conductive member is coated on both sides with an insulating resin coating has an advantage that it can be produced at low cost. Normally, aluminum material is used for the metal applied electrode plate, but iron plate is the cheapest in terms of cost, but aluminum material is widely used in view of rust and weight, but aluminum material is never cheap Not a good material. To compensate for this drawback, an applied electrode plate coated with a resin has appeared, but there is an embodiment as shown in FIG. 8 as a method for making the applied electrode plates conductive.
This is because the peeling portion (11) where the insulating resin coating of the applied electrode plate has been peeled comes into contact with the conductive spacer around the through hole of the applied electrode plate to be laminated, and the spacer and the shaft come into contact with each other. Through the spacers, all the applied electrode plates to be stacked are brought into a conductive state. In this method, since the peeling portion (11) and the spacer and the shaft are merely in contact with each other, rust due to dust or moisture in the contaminated air may cause poor contact at the contact surface. . On the contrary, in the present invention, since the contact piece of the application electrode plate is pressed against the shaft, the problem of poor contact can be solved by obtaining a conductive state between the contact piece and the shaft stronger than the contact. Needless to say, since the applied electrode plates to be laminated maintain a conductive state via the shaft, the spacers need only to keep the distance between the applied electrode plates constant, and the material may be made of an insulating resin. Therefore, the spacer can be made of inexpensive resin instead of expensive metal. As described above, the effect of the present invention is to solve the poor contact of the applied electrode plate, and it is possible to reduce the manufacturing cost by using a resin spacer.

[Brief description of the drawings]

FIG. 1 is a view showing a dust collection unit according to the present invention.

FIG. 2 is a perspective view showing an application electrode plate according to the present invention.

FIG. 3 is a partially enlarged perspective view of an application electrode plate according to the present invention.

FIG. 4 is a partial sectional view of an application electrode plate according to the present invention.

FIG. 5 is a perspective view showing a laminated state of an application electrode plate according to the present invention.

FIG. 6 is a cross-sectional view showing a laminated state of an application electrode plate according to the present invention.

FIG. 7 is a perspective view showing a laminated state of application electrode plates according to a conventional example.

FIG. 8 is a perspective view showing a laminated state of an applied electrode plate according to another example of the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Conductive member 2 ... Insulating resin coating 3 ... Application electrode plate 4 ... Shaft 5 ... Hole 6 ... Cut 7 ... Contact piece 8 ···· Dust collecting electrode plate 9 ··· Spacer 10 ····· Dust collecting unit 11 ··· Peel off section

Claims (1)

[Claims] The conductive member (1) is coated with an insulating resin (2).
In the applied electrode plate (3) covering both sides with a hole, a hole (5) is formed through a shaft (4) for mechanically fixing and electrically connecting the applied electrode plates (3) to be laminated. An electric collector formed by making a cut (6) around the hole (5) to form a chrysanthemum-shaped contact piece (7), and peeling off at least one surface of the insulating resin coating (2) of the contact piece (7). Applied electrode plate of dust device.