JPH06246187A - Hook mechanism for ionizing wire of electrostatic precipitator - Google Patents

Abstract

(57) [Summary] [Structure] The holding member M1 is fixed to the electrostatic precipitator. The holding member M1 holds the hook M2. The hook M2 hangs the ionization wire W in a state in which the ionization wire W is allowed to move in the winding direction A, and is displaced to a tension position for tensioning the wound ionization wire W and a relaxation position for relaxing the ionization wire W. it can. A compression coil spring M3 is provided between the hook M2 and the holding member M1. The compression coil spring M3 is elastically compressed when the hook M2 is displaced to the relaxation position side by the external force acting on the ionization wire W. Further, the compression coil spring M3 can be used up to the contact height. [Effect] When the external force acting on the ionization line W is large, the compression coil spring M3 can absorb the external force up to the contact height, so that the compression coil spring M3 is not plastically deformed by the external force. Therefore, it is possible to cope with a sudden external force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ionization wire hook mechanism for an electrostatic precipitator, and more particularly to an ionization wire hook mechanism for tensioning an ionization wire to which a high voltage is applied.

[0002]

2. Description of the Related Art Generally, an electrostatic precipitator of this type is provided with an ionization section and a dust collection section arranged on the downstream side of the ionization section in the path of air to be cleaned. The dust contained in the air to be cleaned is charged to one polarity (for example, positive polarity) in advance, and the charged dust is collected by the dust collecting unit on the downstream side.

As the ionization part, a large number of opposing electrode plates are formed in a conductive casing of an electrostatic precipitator, and an ionizing wire to which a high voltage is applied is stretched between the opposing electrode plates. Is. The ionizing wire has a relatively short service life and needs to be replaced frequently. So, conventionally,
It is installed in the winding body around which the unused ionization wire is wound, the winding body that winds up the used ionization wire, and the ionization wire stretching path from the winding body to the winding body, and is cleaned. A hook mechanism for tensioning the ionizing wire with the ionizing wire facing the path of the air to be provided is provided in the casing. The hook mechanism includes a hook around which the ionizing wire is wound, and a tension coil spring that connects the hook to the casing. When the product is used, the tension coil spring allows the tension coil spring to be stretched in the air circulation path while a predetermined tension is applied to the tension coil spring, and at the time of winding, the tension coil spring is used. By expanding and contracting, the hook follows the behavior of the ionization line so that the tension acting on the ionization line is always kept constant.

[0004]

As described above, in the above structure, since the tension coil spring is used for the hook mechanism, when a sudden external force acts on the ionization wire, an unused ionization wire is pulled out from the winding body. As a result of the extension of the tension coil spring by a large amount before the extension, the extension coil spring plastically deforms in the extended state, and there is a problem that the desired spring action cannot be achieved.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a hook mechanism for an ionization wire of an electrostatic precipitator which can cope with a sudden external force acting on the ionization wire. .

[0006]

In order to solve the above problems, an ionization wire hook mechanism of an electrostatic precipitator according to the present invention is provided with a holding member fixed to the electrostatic precipitator, and held by the holding member, and ionized. The wire is hooked in a state in which the wire is allowed to move in the winding direction, and the wire is displaceable between a tension position for tensioning the wound ionization wire and a relaxation position for loosening the ionization wire; A compression coil spring that is provided between the member and a compression coil spring that is elastically compressed when the hook is displaced to the relaxed position side by an external force acting on the ionization line and that can be used up to the contact height. I am trying.

Further, it is preferable that the hook is made of a rod-shaped material having an ionized wire winding portion that is twisted in a spiral shape.

[0008]

According to the above construction, when a large external force is generated on the ionization line, the hook moves to the relaxing position side while compressing the compression coil spring. Accordingly, the compression coil spring can absorb the external force up to the contact height. Further, when the hook is made of a round bar-shaped material having a spirally twisted ionization wire winding portion, when the ionization wire is wound around the ionization wire winding portion of the hook, the spiral It is sufficient to wind the ionizing wire along the space defined by the space, and then apply tension to the ionizing wire. As a result, the ionization wire is securely wound in a state where it does not easily come off the ionization wire winding portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view showing an ionization wire hook mechanism of an electrostatic precipitator according to an embodiment of the present invention with a part thereof broken away, and FIG. 2 shows a state in which the hook mechanism is attached to a member on the electrostatic precipitator side. It is a perspective view shown.

With reference to these figures, 11 is an ionization line guide fixed to the ionization section of the electrostatic precipitator,
The ionization line guide 11 is provided with a hook mechanism M of this embodiment.
Are installed in large numbers. The ionization line guide 11
Are fixed to both sides of the casing of the ionization part (not shown) to form a pair, and the fixed base plate portion 11a fixed to the casing and the upper guide piece 11b extending at right angles from the upper side in the width direction of the fixed base plate portion 11a. And a lower guide piece 11c extending in the same direction as the upper guide piece 11b from the lower side in the width direction of the fixed base plate portion 11a, which is a plastic molded product. An intermediate rib 11d is extended between the guide pieces 11b and 11c so as to be parallel to the guide pieces 11b and 11c.
Guide grooves G1 and G2 for guiding the ionization line W are defined between the grooves b and 11c.

The intermediate rib 11d is provided with a bottomed hook fixing hole 11e formed at regular intervals in the longitudinal direction, and each hook fixing hole 11e is selectively ionized depending on the applicable model. The winding hook M2 is fixed (only one is shown in FIGS. 1 and 2). An arc-shaped gap 11f for attaching the hook mechanism M of this embodiment is formed between the hook fixing holes 11e, 11e, and the hook mechanism M is attached to the gap 11f. 11g is the ionization line guide 1
1 is a screw hole for screwing 1 to the casing (not shown).

As shown in FIG. 1, the hook mechanism M includes an ionization line guide 11 on the side of the electrostatic precipitator.
And a holding member M1 fixed to. Holding member M1
Is a resin molded product having a cylindrical appearance and having its outer periphery fixed while being press-fitted into the gap 11f. The holding member M1 is a holding portion M for the hook M2.
It houses 21. The carrying portion M21 is a cylindrical resin molded product, and has a bottomed mounting hole M2 at one end thereof.
2 is formed. And this mounting hole M22
The base end portion of the hook M2 is press-fitted and fixed.

The hook M2 is for hanging the ionization wire W in a state in which the ionization wire W is allowed to move in the winding direction (the direction indicated by an arrow A in FIG. 1), and as described above, the carrying portion. It is held by the holding member M1 via M21. Then, the carrying portion M21 is displaced in the center line direction within the holding member M1, so that the tensioned position (solid line position in FIG. 1) for tensioning the wound ionization line W and the relaxation position (relaxation position for loosening the ionization line W) ( The position of the two-dot chain line in FIG. 1).

In the present embodiment, the hook M2 is a round bar member (diameter of about 3 mm in this embodiment) formed of a ceramic material, and the free end side portion thereof is a spirally twisted ionized wire winding. It has a section 2A. Accordingly, when the ionization wire W is wound around the ionization wire winding portion 2A of the hook M2, the ionization wire W is wound along the spirally partitioned space, and then tension is applied to the ionization wire W. All you have to do is give it. As a result, the ionization wire W is reliably wound in a state where it does not easily come off the ionization wire winding portion 2A.

In the structure as described above, the carrying portion M21
A compression coil spring M3 that can be used up to a close contact height is disposed on the outer periphery of the compression coil spring M3.
The hook M2 is biased toward the tension position side via 21. More specifically, an outward flange 21A is integrally formed at the base end of the carrying portion M21, and the outer peripheral surface of the outward flange 21A is in sliding contact with the inner peripheral surface of the holding member M1. , At the tip of the holding member M1,
The inward flange 1A is integrally formed, and the inner peripheral surface of the inward flange 1A is in sliding contact with the outer peripheral surface of the carrying portion M21. By disposing the compression coil spring M3 between the flanges 21A and 1A, the compression coil spring M3 is elastically compressed between the flanges 21A and 1A when the hook M2 is displaced toward the relaxed position. I am trying.

According to the above construction, during normal use, the compression coil spring M3 is expanded, and the spring force of the compression coil spring M3 causes the carrying portion M21 to fix the fixed substrate portion 11a of the ionization line guide 11. As a result of being pressed to the side, the hook M2 is maintained in the tensioned position shown by the solid line in FIG. As a result, the ionization wire W wound around the hook M2 is stretched in the air path with a predetermined tension applied.

Next, when a large external force is generated on the ionization wire W, the hook M2 is attached to the outward flange 21 of the carrying portion M21.
While pressing the compression coil spring M3 against the inward flange 1A of the holding member M1 via A, the compression coil spring M3 is displaced to the relaxed position. As a result, the compression coil spring M3 is
While being compressed to the contact height between 1A and 1A, the external force can be absorbed and the tension of the ionization line W can be constantly kept constant.

As described above, in the ionization wire hook M2 mechanism of the electrostatic precipitator according to the present embodiment, the compression coil spring M3 can absorb the external force up to the contact height, so that the contact height can be improved. Even if an external force reaches, the compression coil spring M3 can be prevented from being plastically deformed by the external force. Therefore, according to the present embodiment, it is possible to provide the ionization wire hook M2 mechanism of the electrostatic precipitator that can cope with a sudden external force acting on the ionization wire W.

Further, in this embodiment, the hook M2
Is made of a round rod-shaped ceramic material having the ionized wire winding portion 2A that is twisted in a spiral shape, the ionized wire W is wound along the spirally partitioned space, and then the ionized wire W is wound. Since the winding work can be completed only by applying a tension to, there is an advantage that the manufacturing cost can be reduced as compared with the case where the roller member is provided.

In particular, since ceramic is used as the material of the hook M2, there is an advantage that it has good insulating properties and can exhibit high wear resistance. In addition, in this embodiment, the outer peripheral surface of the outward flange 21A of the carrying portion M21 is brought into sliding contact with the inner peripheral surface of the holding member M1, and the inner peripheral surface of the inward flange 1A of the holding member M1 is carried by the carrying portion. Since the outer peripheral surface of M21 is slidably contacted with each other, when the carrying portion M21 is displaced, each flange 21A, 1A also acts as a guide member for guiding the displacement, resulting in a smoother displacement structure with less resistance. There is an advantage that can be done.

The present invention is not limited to the above embodiment, but various design changes are possible. For example, instead of the hook M2, the hook M4 shown in FIG. 3 may be adopted. The hook M4 is a substantially semicircular base material portion M formed in a flat plate shape.
It is a ceramic product having an insertion hole M42 in 41, and has an advantage that it can be easily mass-produced and can be manufactured at low cost. In the case of adopting the configuration of FIG. 3, it is preferable to set the sliding resistance of the ionization wire W as small as possible by chamfering the peripheral end surface of the insertion hole M42.

Further, as shown in FIG. 4, a hook M5 formed in a pulley shape may be adopted. In the embodiment of FIG. 4, the hook M5 is provided with a protrusion M52 standing on a base portion M51 protruding from the carrying portion M21, and is rotatably attached to this protrusion M52. When the configuration of FIG. 4 is adopted, it is preferable to provide a detent member that restricts the carrying portion M21 from being displaced in the circumferential direction with respect to the holding member M1.

In addition, various design changes can be made within the scope of the present invention.

[0024]

As described above, in the ionization line hook mechanism of the electrostatic precipitator according to the present invention, when a large external force is generated in the ionization line, the compression coil spring absorbs the external force up to the contact height. Therefore, even if an external force reaching the contact height is applied, the compression coil spring can be prevented from being plastically deformed by the external force.

Therefore, according to the present invention, there is a remarkable effect that it is possible to provide a hook mechanism for an ionization wire of an electrostatic precipitator which can cope with a sudden external force acting on the ionization wire. Further, when the hook is made of a round bar-shaped material having an ionization wire winding portion that is twisted so as to partition the ionization wire winding portion, the ionization wire is arranged in a spirally divided space. Wrap around,
Then, since the winding operation can be completed only by applying tension to the ionization wire, there is an advantage that the manufacturing cost can be reduced by that amount as compared with the case where the roller member is provided.

[Brief description of drawings]

FIG. 1 is a perspective view showing an ionization wire hook mechanism of an electrostatic precipitator according to an embodiment of the present invention with a part thereof broken away.

FIG. 2 is a perspective view showing a state in which the hook mechanism is attached to a member on the side of the electrostatic precipitator.

FIG. 3 is a perspective view showing a partially broken portion of a hook mechanism for an ionization wire of an electrostatic precipitator according to another embodiment of the present invention.

FIG. 4 is a perspective view showing a partially broken portion of an ionization wire hook mechanism of an electrostatic precipitator according to still another embodiment of the present invention.

[Explanation of symbols]

 M1 holding member M2 hook 2A Ionization wire hooking portion M3 Compression coil spring M4 hook M5 hook W Ionization wire

Claims (2)

[Claims] 1. A holding member (M1) fixed to an electrostatic precipitator, and an ionization wire (W) held by the holding member (M1).
Is allowed to move in the winding direction (A), and it can be displaced between the tension position where the wound ionization wire (W) is tensioned and the relaxation position where the ionization wire (W) is relaxed. The hooks (M2, M4, M5) are installed between the hooks (M2, M4, M5) and the holding member (M1), and the hooks (M2, M2) are acted upon by the external force acting on the ionization wire (W).
(4, M5) is equipped with a compression coil spring (M3) that is elastically compressed when it is displaced to the relaxed position side and that can be used up to the contact height (M3). mechanism. 2. The hook mechanism for an ionization wire of an electrostatic precipitator according to claim 1, wherein the hook (M2) is made of a round bar-shaped material having a spirally twisted ionization wire hooking portion (2A).