JPH04322757A - Supporting structure of pole plate in electrostatic precipitator - Google Patents

Abstract

PURPOSE:To accurately arrange pole plates at equal intervals in a few number of goods by easy assembling procedure by pinching and supporting the pole plates by three pieces of upper and lower supporting robs in a state wherein the notches provided to the pole plates are engaged with the annular grooves provided to the supporting rods. CONSTITUTION:Pole plates 31, 32 are pinched and supported by three pieces of upper and lower supporting rods 21, 22 in a state wherein the notches 31a, 32a provided to the pole plates 31, 32 are engaged with the annular grooves 21b, 22b provided to the supporting rods 21, 22. As a result, the pole plates are accurately arranged at equal intervals in a few number goods by easy assembling procedure.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a support structure for supporting the electrode plates in an electrostatic precipitator that removes dust from the air using an electrode plate to which a high voltage is applied and a grounded electrode plate. be.

0002

[Prior Art] Conventionally, by applying a high voltage to one of a pair of electrodes and grounding the other, pre-ionized air is circulated between the two electrodes to ground the dust contained in the air. Electrostatic precipitators that collect and remove dust on side electrodes are used alone or incorporated into air purifiers, air conditioners, etc.

[0003] The electrostatic precipitator described above has various configurations depending on the form of the electrode, but in particular, in consideration of improving dust collection efficiency and ease of cleaning, metal plates (electrode plates) are used as the electrodes. ), a plurality of them are prepared on both the high voltage side and the ground side, and the high voltage side electrode plates and the ground side electrode plates are arranged alternately at intervals of 4 to 10 mm. Commonly used.

[0004] In the electrostatic precipitator having the above configuration, normally,
As shown in FIG. 9, holes 90 are provided in alternately arranged high voltage side and ground side electrode plates 90, 90..., 91, 91...
After inserting support rods 92 and 93 on the high voltage side and the ground side, which are made of metal tube bodies such as aluminum tubes, into the support rods 9a, 90a, 91a, 91a, respectively, the support rods 9
By expanding tubes 2 and 93, the high voltage side electrode plates 90 and 9
0... are supported and fixed by the support rod 92 on the high voltage side, and the electrode plates 91, 91... on the ground side are supported and fixed by the support rod 93 on the ground side.
A pole plate support structure is used to support and fix the battery.

In the figure, reference numeral 90b indicates a hole provided in the electrode plate 90 to prevent the electrode plate 90 on the high voltage side from coming into contact with the support rod 93 on the ground side.
Similarly, in b, the grounding side electrode plate 91 is the support rod 9 on the high voltage side.
A hole provided in the electrode plate 91 is shown to prevent contact with the electrode plate 91.

[0006]

However, in the above-mentioned support structure, in order to fix the electrode plates 90, 91, etc., it is necessary to expand the support rods 92, 93, which is time-consuming and labor-intensive. Since no measures have been taken for positioning the support rods 92, 93, it is difficult to arrange the electrode plates 90, 91... at equal intervals, and variations in the spacing between the electrode plates 90, 91... tend to occur. There's a problem.

[0007] If variations occur in the spacing between the plates 90, 91..., the spacing between the plates 90, 91 on the high voltage side and the ground side will not be constant, and there is a risk that the desired dust collection capacity will not be obtained. In addition, in the worst case, the plates 90 and 91 on the high voltage side and the ground side may be short-circuited, resulting in damage to the power supply device or an accident due to electric leakage. Therefore, as shown in FIG. 10, tubular spacers 94, 94, which are made of an insulating material and have a length corresponding to the spacing between the electrode plates 90, 90, are placed between the support rods 90, 90, and the electrode plates 90, 90, alternately. In addition to extrapolating the same spacers 94, 94... to the electrode plate 91
, 91 . . . , a support structure in which electrode plates are alternately extrapolated onto a support rod 93 has been proposed.

However, in the above configuration, a plurality of spacers 9
Since 4,94, etc. are required, the number of parts increases and the number of assembly steps increases, leading to an increase in the cost of the entire device. The present invention has been made in view of the above circumstances, and provides a support structure for electrode plates that has a small number of parts, is easy to assemble, and can arrange electrode plates accurately at equal intervals. is intended to provide.

[0009]

[Means for Solving the Problems] In order to solve the above problems, the electrode plate support structure in the electrostatic precipitator of the present invention includes at least two electrode plates that support and fix a plurality of electrode plates arranged at equal intervals. A support rod is provided, and an annular groove having a width equal to or slightly wider than the thickness of each electrode plate is formed at the position where each support rod supports the electrode plate. It is characterized in that each electrode plate is sandwiched and supported by each support rod in a state in which the electrodes are engaged with each other.

0010

[Function] In the electrode plate support structure of the present invention having the above configuration, the electrode plates can be arranged at equal intervals by simply engaging the electrode plates in the grooves of the support rods, and the electrode plates can be arranged at equal intervals by at least two support rods. Multiple plates can be supported and fixed simply by sandwiching each plate.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A support structure for an electrode plate in an electrostatic precipitator according to the present invention will be explained below with reference to drawings showing an example of an electrostatic precipitator to which the support structure is applied. Figures 1 and 2
As shown in , the electrostatic precipitator has a box-shaped main body 1 with an air intake port 10 and an air intake port 11 formed on the front and back surfaces thereof, and 2 perpendicular to the front and back surfaces in which the outlet 11 is formed.
Six support rods 21 spanned between the side plates 12 and 13,
22..., and by being supported by these support rods 21, 22..., a plurality of high voltage side and ground side pole plates 31, which are alternately arranged in parallel with the side plates 12, 13 in the main body 1. 32..., the air intake port 10 and the electrode plates 31, 3
2..., a plurality of ionization electrode wires 40, 40... stretched in parallel with the support rods 21, 22..., and the air intake port 1.
1 and a filter 5 attached to the filter 5.

The main body 1 is made entirely of a metal plate such as an iron plate, and a frame 14 made entirely of a metal plate such as an iron plate is attached to the front surface of the air intake port 10, like the main body 1. There is. When the frame 14 is attached to the main body 1, the frame 14 is arranged parallel to the ionizing electrode wires 40, 40, and is used to ionize air together with the ionizing electrode wires 40, 40... , a plurality of counter electrode plates 1
4a, 14a... are provided.

The three support rods 21 on the high voltage side (the same applies to the three support rods 22 on the low voltage side) are made of a single metal round member, as shown in FIG. A threaded portion 21a (22a) for fixing to the side plates 12, 13 is formed. Further, in the center of the support rod 21 (22), a plurality of annular grooves 21b are formed in the center of the support rod 21 (22), the width of which is the same as the thickness of the electrode plate 31 (32) or slightly wider than the thickness of the electrode plate 31 (32).
(22b) are formed at equal intervals in accordance with the arrangement interval of the electrode plates 31, 31...(32, 32...). Groove 21b
The width of the groove 21b of the electrode plate 31 (32) is limited to be the same as the thickness of the electrode plate 31 (32) or slightly wider than the thickness of the electrode plate 31 (32). (22b
), and the engaged electrode plate 31
This is to prevent (32) from shaking.

Incidentally, an annular tapered surface 21d (22d) is formed at both edges of the entrance of the groove 21b (22b), as shown in an enlarged circle in the figure. The tapered surface 21d (22d) is for facilitating engagement of a notch 31a (32a) of the electrode plate 31 (32), which will be described later, with the groove 21b (22b). In addition, both support rods 21,
22, the support rod 21 on the high voltage side has a threaded portion 21a.
A pair of annular grooves 21c, 21c are formed at positions close to the grooves 21c, in which support plates 41, 41 for stretching ionizing electrode wires 40, 40, which will be described later, are engaged.

The support rod 21 on the high voltage side is shown in FIGS. 2 and 3.
As shown in the figure, by inserting both ends of the insulators into the through holes 61a and 62a of the insulators 61 and 62 attached to the side plates 12 and 13, the insulators are bridged between the side plates 12 and 13 and protrude outside of the main body 1. It is fixed to the main body 1 by screwing nuts n, n onto the threaded portions 21a, 21a. Of the three support rods 21 on the high voltage side, the upper support rod 21 has a terminal plate t for connection to a high voltage power source (not shown) at the end on the side plate 12 side, which is connected to the above-mentioned nut n. It is interposed between the insulator 62, and by tightening the nut n,
It is electrically connected to the support rod 21 and mechanically fixed.

On the other hand, as shown in the above figure, the support rod 22 on the ground side is inserted between the side plates 12 and 13 by inserting its both ends into the through holes 12a formed in the side plates 12 and 13. A threaded portion 21a extends over the main body 1 and protrudes to the outside of the main body 1,
It is fixed to the main body 1 by screwing nuts n, n onto 21a. The high voltage side plate 31 is
As shown in FIG. 5, it is a rectangular plate made entirely of a metal plate such as a stainless steel plate, and the upper and lower sides each have a diameter that is the same as the outer diameter of the groove 21b of the support rod 21, or a portion of the groove. Three cuts 31a are formed having a width wider than the outer diameter of. At the entrance of the notch 31a, there is a groove 21 of the support rod 21.
A radius is added to facilitate engagement with b.

As shown in FIG. 7, the high-voltage side electrode plate 31 is formed by engaging the notches 31a with grooves 21b, 21b, . . . formed at multiple locations on the high-voltage side support rod 21. are arranged at equal intervals on the support rod 21, and
As shown in the figure, it is fixed in the main body 1 by being sandwiched from above and below by three supporting rods 21, 21, . . . . On the other hand, the grounding side electrode plate 32 is made of a larger plate than the high voltage side electrode plate 31, as shown in FIG. Three cuts 32 with a width equal to or wider than the outer diameter of the groove section
a is formed. At the entrance of the notch 32a, the groove 22 of the support rod 22 is inserted, as in the case of the high voltage side electrode plate 31 described above.
A radius is added to facilitate engagement with b. Furthermore, the grounding side electrode plate 32 has three notches 32b to avoid contact with the high voltage side support rod 21.
is also formed.

Similar to the high voltage side electrode plate 31, the grounding side electrode plate 32 has notches 32a formed in grooves 22b formed at multiple locations on the high voltage side support rod 22, as shown in FIG. ，
22b..., the main body 1 is arranged at equal intervals on the support rod 22, and as shown in FIG.
fixed inside.

As shown in FIG. 2, the ionizing electrode wires 40, 40... are connected at both ends to the aforementioned support plates 41, 41 via tension members 42, 42... including coil springs. As shown in FIG. 8, the support plate 41 is a substantially rectangular plate made entirely of a metal plate such as a stainless steel plate.
Three notches 41a are formed on each side, each having a width equal to or wider than the outer diameter of the groove 21c of the support rod 21. At the entrance of the notch 41a, a support rod 2 is placed at the entrance of the notch 41a, as in the case of the high voltage side electrode plate 31 above.
A radius is provided to facilitate engagement with the groove 21c of No. 1. Further, on the front side of the support plate 41, tension members 42, 42...a plurality of protrusions 41 for connection are provided.
b, 41b... are formed. Furthermore, the support plate 4
As mentioned above, since the ionizing electrode wires 40, 40, etc. are stretched, the reinforcing ribs 41c are bent by folding the four sides at right angles to prevent bending due to the tension. , 41c... are formed.

Similar to the electrode plate 31, the support plate 41 has the notches 41a, 41a... engaged with the annular grooves 21c, 21c... provided in the support rod 21 on the high voltage side, and the three It is fixed in a predetermined position by being sandwiched from above and below by the supporting rods 21, 21, . . . . Ionization electrode wire 40
, 40..., as shown in the figure, when the support plates 41, 41 are fixed in a predetermined position, tension is applied by the tension members 42, 42..., as shown in the figure.
2 is stretched parallel to...

The filter 5 is detachably attached to the back surface of the main body 1 by means of attachment frames 15, 15 provided on the back surface of the main body 1. The electrostatic precipitator consists of the above parts,
For example, it can be assembled using the following procedure. First, the lower support rods 21, 21, 22 among the support rods 21, 22, . . . are attached to the main body 1.

Next, the support rods 21, 21 on the high voltage side,
The high voltage side electrode plates 31, 3 are placed in the grooves 21b, 21b...
1..., the lower cuts 31a, 31a... are engaged, and the grooves 22b, 22 of the grounding side support rods 22, 22 are engaged.
By engaging the lower notches 32a, 32a... of the ground side electrode plates 32, 32... with the portion b..., each electrode plate 31, 32
...arranged alternately. In addition, the support rod 21 on the high voltage side
, 21 are engaged with the grooves 21c, 21c, . . . on the lower side of the support plate 41.

Next, the grooves 21 of the upper support rod 21 are inserted into the upper notches 31a, 31a... of the electrode plates 31, 31...
b, 21b... and a pair of support plates 41
, 41, the support rod 21 is inserted into the upper notches 41a, 41a.
When the upper support rod 21 is attached to the main body 1 while engaging the grooves 21c, 21c of
It is sandwiched from above and below by... and is fixed inside the main body 1.

In addition, the grooves 22 of the upper support rods 22, 22 are formed in the upper notches 32a, 32a... of the electrode plates 32, 32...
b, 22b... while engaging the upper support rods 22,
22 to the main body 1, the electrode plates 32, 32...
It is sandwiched from above and below by the book support rods 22, 22, and is fixed inside the main body 1. After that, attach the frame 14 to the front of the air intake port 10, and
By attaching the filter 5 to the filter 5, the electrostatic precipitator is completed.

[0025] In the electrostatic precipitator consisting of the above parts,
When the main body 1 is connected to a ground terminal (not shown) to be grounded, and a high voltage is supplied from a high voltage power source (also not shown) to the support rod 21 on the high voltage side via the terminal plate t, this support rod 21 The high voltage side pole plate 31 supported by
A high voltage is applied to the ionizing electrode wires 40, 40, . Then, corona discharge occurs between the ionizing electrode wires 40, 40... and the counter electrode plates 14a, 14a....

In this state, a blower (not shown) or the like is used to
When air is circulated from the air intake port 10 to the air intake port 11, the dust contained in the air is first transferred to the ionized electrode wire 4.
0, 40... and the counter electrode plates 14a, 14a... become charged. Next, when the charged dust passes between the electrode plates 31, 32...
, 32... and removed from the air.

[0027]Then, the air from which dust has been removed passes through the filter 5, and dust that has not been collected by the electrode plates 32, 32, etc., and dust that has been scattered again from the electrode plates 32, 32, etc., is removed. It is then ejected from the aircraft. As explained above, in the electrostatic precipitator shown in the figure, the high voltage side electrode plates 31, 3
Since the electrode plate support structure of the present invention is adopted for both the electrode plates 32, 32... on the ground side and the electrode plates 32, 32... on the ground side,
Each pole plate 31, 32 can be
... can be arranged accurately and evenly spaced. Moreover, the support rod 21,
While engaging the grooves 21b and 22b of 22, sandwich each electrode plate 31, 31... with the three upper and lower support rods 21, 21...,
Similarly, each pole plate 32,
32..., each electrode plate 31,
32... can be arranged accurately at equal intervals, so assembly is easy.

Note that the support structure for the electrode plate of the present invention is not limited to that shown in the above figure. For example, in the figure, notches 31a and 32a are formed on the upper and lower sides of the pole plates 31 and 32 in order to sandwich the pole plates 31 and 32 from above and below between the support bars 21 and 22, but the notches 31a and 32a for engaging the support bars are They may be formed on the left and right sides of the plate, or may be formed on two adjacent sides. Alternatively, notches may be formed on three or four sides of the electrode plate, and the support rod may be engaged with the notches on each side. Moreover, the above-mentioned notch may be formed in a corner portion of the electrode plate.

Furthermore, when the electrode plate is sandwiched and supported from three sides by three support rods, for example, the electrode plate is
If there is no risk of displacement in the plane direction, there is no need to provide a cut in the electrode plate. In the device shown in the figure, three support rods were used on each of the high voltage side and the ground side, but the number of support rods is not particularly limited as long as there are two or more to sandwich the electrode plates.

In the electrostatic precipitator shown in the figure, the support structure of the present invention was adopted for both the high voltage side and the ground side. Even if only one of the electrode plates is used, the number of parts can be sufficiently reduced. others,
Various design changes can be made without changing the gist of the invention.

[0031]

[Effects of the Invention] Since the support structure for the electrode plates in the electrostatic precipitator of the present invention is constructed as described above, the electrode plates can be arranged at equal intervals simply by engaging the electrode plates in the grooves of the support rod. In addition, a plurality of electrode plates can be supported and fixed simply by sandwiching each electrode plate between at least two support rods. Therefore, according to the above support structure, the number of parts is small, assembly is easy, and the electrode plates can be arranged accurately at equal intervals.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the internal configuration of an example of an electrostatic precipitator employing the electrode plate support structure of the present invention.

FIG. 2 is another sectional view showing the internal configuration of the electrostatic precipitator.

FIG. 3 is a front view of a support rod used in the electrostatic precipitator.

FIG. 4 is a sectional view showing how the support rod is attached to the electrostatic precipitator.

FIG. 5 is a front view of the high voltage side electrode plate supported by the support rod.

FIG. 6 is a front view of a ground-side electrode plate supported by the support rod.

FIG. 7 is an enlarged perspective view of the engagement portion between the support rod and the electrode plate.

FIG. 8 is a front view of a support plate for tensioning the ionization electrode wire, which is supported by the support rod.

FIG. 9 is a sectional view showing an example of a conventional support structure.

FIG. 10 is a sectional view showing another example of a conventional support structure.

[Explanation of symbols]

21 Support rod 21b Groove 22 Support rod 22b Groove 31 Pole plate 31a Notch 32 Pole plate 32a Notch

Claims (1)

[Claims] Claim 1: High voltage side and ground side pole plates (31) (3
2) in an electrostatic precipitator in which a plurality of electrode plates (31) (32) are arranged alternately, the plurality of electrode plates (31) (32) on at least one of the high voltage side or the ground side.
) are arranged at equal intervals and are provided with at least two support rods (21) and (22) for supporting and fixing the support rods (21 and 22).
) (22), each of the electrode plates (31) (3)
annular grooves (21b) (22b) having a width equal to or slightly wider than the thickness of the electrode plates (31) (32);
), and with the electrode plates (31, 32) engaged in the respective grooves (21b, 22b), each support rod (21
) (22) A support structure for electrode plates (31) and (32) in an electrostatic precipitator, characterized in that the electrode plates (31) and (32) are sandwiched and supported by the electrode plates (31) and (32).