JPH0246266B2 - DENKISHUJINKINOSHUJINKYOKU - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a dust collecting electrode of an electrostatic precipitator, and more particularly to a dust collecting electrode of an electrostatic precipitator in which dust attached and collected on the dust collecting electrode is removed by a hammer. Regarding dust.

[Background of the invention]

FIG. 5 shows a perspective view of the dust collection electrodes of the electrostatic precipitator, and the dust collection electrodes 10 are vertically arranged at regular intervals in pairs with discharge electrodes (not shown) in the dust collection part of the electrostatic precipitator. There is. The dust collecting electrode 10 includes a dust collecting plate 12 and a dust collecting plate 1.
A hammer piece 16 is attached to one end of the hammer beam 14. A shaft 18 connected to a drive device is rotatably disposed diagonally above the hammering piece 16 along the dust collecting electrode group. A hammer 20 that hammers the end surface of the hammering piece 16 when the shaft 18 rotates is attached to the shaft 18 by a mounting member 22 in accordance with the installation interval of the hammering piece 16. .

In order to brush off the dust attached to the surface of the dust collecting plate 12, the shaft 18 is moved by a drive device (not shown).
is rotated in the direction of the arrow shown in FIG. 5 to give a blow to the hammering piece 16, and at this time, the hammering beam 14 transmits the blowing vibration to vibrate the dust collecting plate 12, and the dust collecting plate 12 is attached to the plate surface. Brushing off the dust.

Further, the dust collecting plate 12 is often used to have a substantially wave-shaped cross section in order to increase the efficiency of collecting dust in the processing gas or to ensure the rigidity of the plate itself. Generally, the corrugated convex portion of the dust collecting plate 12 that the hammering beam 14 comes into contact with is formed flat, and has a so-called rectangular corrugated cross section. FIGS. 6 and 7 are cross-sectional views of a conventional dust collecting pole in which a hammering beam 14 is attached to a dust collecting plate 12. The dust collecting plate 10 and the hammering beam 14 are fixed by bolts 24 and nuts 26 without welding. This is to prevent distortion or the like from occurring in the dust collecting plate 12 since the impact vibration from the hammer 20 is transmitted to the dust collecting pole 12 via the hammering beam 14.

However, when such tightening and fixing is carried out, when tightening the bolts 24 and nuts 26 shown in FIG. Since the pressure is perpendicular to the direction of force transmission (direction of arrow A), if a large impact force is applied momentarily during hammering, the seat surface will slip and cause energy loss, causing sufficient impact force to be applied to the dust collection plate. 12 cannot be transmitted. In addition, in the case of tightening the bolt 24 and nut 26 shown in FIG. 7, since only one of the hammers 20 is fixed, the two hammer beams 14 receive the impact force from the hammer 20 in perfect agreement. Since the dust cannot be transmitted in a bent state, there is a risk that a large bending stress will be generated in the bent portion of the dust collecting plate 12, resulting in damage.

[Purpose of the invention]

The present invention was made in view of the above circumstances, and the hammering beam reliably transmits the impact force of the hammer to the dust collection plate, and the electric power generation method prevents large stress from occurring at the folded part of the dust collection plate. The purpose is to propose dust collection poles for dust collectors.

[Summary of the invention]

In order to achieve the above-mentioned object, the present invention has a dust collecting plate which has a substantially wave-shaped cross section and which collects dust in the processing gas, and which is sandwiched between the dust collecting plate and the impact force from the hammer. In the dust collection pole of an electrostatic precipitator, which consists of a pair of hammering beams that transmit the information to the dust collection plate, and a bolt that tightens and fixes the hammering beams to the dust collection plate, the approximately wave-shaped convex portion of the dust collection plate is A circumscribing plate is bent to fit the shape of the outer surface and circumscribes the convex part by tightening the bolts, and a circumscribing plate is bent to fit the shape of the inner surface of the convex part of the dust collection plate and circumscribes the convex part by tightening the bolts. It consists of an inscribed plate that is inscribed in the convex portion, and a spacer that is arranged between the inscribed plate and one of the hammered beams and maintains a constant distance between the hammered beams by tightening the bolt. Features.

〔Example〕

Preferred embodiments of the dust collecting electrode of the electrostatic precipitator according to the present invention will be described in detail below with reference to the accompanying drawings. The dust collecting electrode of the electrostatic precipitator according to the present invention is disposed within the electrostatic precipitator in the same manner as shown in FIG.

1 and 2 are sectional views of essential parts of a dust collection electrode of an electrostatic precipitator according to the present invention. As shown in FIGS. 1 and 2, the dust collecting plate 12 of the dust collecting electrode 10 has a square wave-shaped cross section, and has convex portions 28, 30, 3 from the left side.
2 is formed. Wave-shaped convex portion 3 of dust collecting plate 12
0 is the flat surface 30A that the hammering beam 14 comes into contact with
, bent portions 30B, 30B, and flat surface 30
It is formed into a rectangular wave shape with slopes 30C and 30C on both sides of A, and a bolt 2 is installed approximately in the center of the flat surface 30A.
4 is inserted. The bolt 24 is also inserted through the two hammering beams 14, 14, and by tightening the nut 26, the distance between the hammering beams 14, 14 is reduced and the dust collecting plate 12 is fixed.

A circumscribing plate 34 is disposed on the outer surface of the convex portion 30 of the dust collecting plate 12, and the circumscribing plate 34 is arranged as shown in FIG.
As shown in FIG. 2, the dust collecting plate 12 is bent to match the outer surface of the convex portion 30 of the dust collecting plate 12. The central flat surface 34A of the circumscribing plate 34 is attached to the outer surface of the flat surface 30A of the convex portion 30, and both end surfaces 34B, 34B of the circumscribing plate 34 are attached to the inner surfaces of the flat surfaces 28A, 32A of the adjacent convex portions 28, 32. is coated on.
As shown in FIG. 1, the bending angle of both end surfaces 34B, 34B of the circumscribing plate 34 is made slightly larger than the angle θ of the bending portion of the dust collecting plate 12,
B, 34B are bent upwards from the flat surfaces 28A, 32A of the adjacent convex portions 28, 32. Further, an insertion hole 35 for the bolt 24 is formed in the flat surface 34A. On the other hand, the inscribed plate 36 shown in FIG. The central flat surface 36A of the inscribed plate 36 is attached to the inner surface of the flat surface 30A of the convex portion 30, and both end surfaces 36B, 36B of the inscribed plate 36 are attached to the flat surfaces 28A, 32A of the adjacent convex portions 28, 32. coated on the outer surface of the As shown in FIG.
The bending angles of B and 36B are slightly smaller than the angle θ of the bending part of the dust collection plate 12, and both end surfaces 36B and 3
6B is the flat surface 28 of the adjacent convex portions 28, 32.
A, it is bent downward from 32A. Further, an insertion hole 37 for the bolt 24 is formed in the flat surface 36A.

A cylindrical spacer 38 as shown in FIG. is held constant to prevent the dust collecting plate 12 from being compressed and deformed when the bolts are tightened.

According to the dust collection pole of the electrostatic precipitator according to the present invention configured as described above, the hammering beam 14 is connected to the dust collection plate 12.
When the bolt 24 is attached to the hammer beam 14 on one side, the spacer 38, the inscribed plate 36, the dust collection plate 12, the circumscribed plate 34, and the hammer beam 1 on the other side.
4, the nut 26 is screwed together, and the bolt 24 is tightened and fixed. FIG. 2 shows the state in which the bolts are tightened, and the inscribed plate 36 and the circumscribed plate 34 are pressed by the spacer 38 and the hammering beam 14 on the other side to form the corrugated convex portion 3.
It is fixed in close contact with the inner and outer surfaces of 0 and cannot be slid. In this case, when the bolts are tightened, the circumscribed plate 34 is pressed and deformed from each end to the inner surface of the adjacent convex portions 28 and 32 until the bending angle reaches the bending angle θ of the dust collection plate 12, and is attached thereto. As a result, both end surfaces 34B, 34B of the circumscribing plate 34 are adhered to the inner surfaces of the flat surfaces 28A, 32B of the adjacent convex portions 28, 32 without creating any gaps. Further, the inscribed plate 36 is pressed and deformed from each end to the outer surface of the adjacent convex portions 28 and 32 so that the bending angle reaches the bending angle θ of the dust collection plate 12, and then adheres thereto. As a result, both end surfaces 34B, 34B of the inscribed plate 36 are adhered to the outer surfaces of the flat surfaces 28A, 32B of the adjacent convex portions 28, 32 without creating any gaps.

When the hammering beams 14, 14 receive a blow from the hammer 20, the striking force is transmitted to the dust collecting plate 12. The transmission direction is the direction shown by arrow A, but since the inscribed plate 36 and the circumscribed plate 34 are in close contact with each other, and the impact force is transmitted to the slope 30C of the wave-shaped convex portion 30 of the dust collecting plate 12, Unlike pressing and fixing using only the flat surface 30A, sufficient transmission can be achieved. Further, the bent portions 30B, 30 of the corrugated convex portion 30 through which the bolt 24 is inserted
Since the bent portions of B and the adjacent convex portions 28 and 32 are held between the circumscribed plate 34 and the inscribed plate 36, even if they receive impact vibration, they do not receive stress due to the vibration.

In the above embodiment, the circumscribed plate 34 and the inscribed plate 36 were bent to fit closely to the corrugated convex portion 30 of the dust collecting plate 12, but the production of these plates 34 and 36 was limited to the dimensions. Since a slight error is likely to occur in this case, as shown in FIG.
is formed to be slightly larger than the flat surface 30A of the dust collecting plate 12, and the central flat surface 36A of the inscribed plate 36 is formed to be shorter than the flat surface 30A of the convex portion 30. In addition, in this case, the dimension of the spacer 38 to be attached is formed to be short, and when the bolt 24 is tightened, the spaced apart part H of the hammering beams 14, 14 is slightly deflected from each other around the core of the bolt 24 due to the tightening of the bolt. Thus, the spacing portion H is provided so as to be reduced to H'.

In the dust collecting electrode 10 formed in this way,
Since the spacer 38 is formed short, the external plate 34 and internal plate 3
6 and the dust collecting plate 12 are slightly deformed by the hammering pressure, and are integrated with each other by the elastic force that resists this bending deformation, thereby ensuring the transmission of the hammering force.

Further, in the above embodiment, the circumscribed plate 34 and the inscribed plate 36 were arranged to adhere to the flat surfaces 28A, 32A of the adjacent convex strips 28, 32, but this is not restrictive, and the striking force of the hammer 20 is weak. If stress deformation of the dust collecting plate 12 is unlikely to occur, short plates 34 and 36 may be used that extend up to part of the slope 30C of the convex portion 30 through which the bolt 24 is inserted. Conversely, if the impact force is strong, the plates 34 and 36 may be further extended and the convex portions 28,
32 may be formed to cover the bent portion of the convex portion adjacent to the convex portion 32 to prevent stress deformation of the dust collecting plate 12 due to impact force.

〔Effect of the invention〕

As explained above, according to the dust collection electrode of the electrostatic precipitator according to the present invention, the circumscribed plate and the internal plate are provided on the inside and outside of the convex part of the dust collection plate through which the tightening bolt for fixing the hammering beam is inserted. By providing a spacer to separate the two hammering beams, the impact force of the hammering beam from the hammering hammer is efficiently transmitted, and there is a risk that stress may be generated in the folded part of the dust collection plate. There is no.

[Brief explanation of the drawing]

1 and 2 are sectional views of essential parts of a dust collection electrode of an electrostatic precipitator according to the present invention, and FIG. 3 is a perspective view of a circumscribed plate, an internal plate, and a spacer used in the dust collection electrode according to the present invention. , FIG. 4 is a sectional view of a main part showing an application example of the electrostatic precipitator according to the present invention, FIG. 5 is a perspective view of a dust collecting electrode provided in the main body of the electrostatic precipitator, and FIG.
FIG. 7 and FIG. 7 are cross-sectional views of a dust collection electrode of a conventional electrostatic precipitator. 10... Dust collecting pole, 12... Dust collecting plate, 14... Hammering beam, 24... Bolt, 26... Nut, 2
8, 30, 32... convex portion, 34... circumscribed plate, 36... inscribed plate, 38... spacer.

Claims (1)

[Claims] 1. A dust collection plate having a substantially wave-shaped cross section to collect dust in the processing gas, and a pair of hammers that sandwich the dust collection plate and transmit the impact force from the hammer to the dust collection plate. A dust collection pole of an electrostatic precipitator consisting of a beam and a bolt for tightening and fixing the hammering beam to a dust collection plate is bent to match the shape of the outer surface of a substantially wave-shaped convex portion of the dust collection plate, A circumscribed plate that circumscribes the convex part when the bolt is tightened, and an inscribed plate that is bent and formed to match the shape of the inner surface of the convex part of the dust collection plate and inscribed in the convex part when the bolt is tightened. A dust collection pole for an electrostatic precipitator, comprising: a spacer disposed between an inscribed plate and one of the hammering beams, and maintaining a constant distance between the hammering beams by tightening a bolt.