JP3005851B2 - Dust collector for electric dust collector and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention constitutes a part of an electric precipitator, in which a dust collecting portion can be easily formed, and the end of a dust collecting electrode can be reliably waterproofed and insulated. The present invention relates to a dust collector for an electric dust collector.

[0002]

2. Description of the Related Art As a conventional technique, Japanese Patent Publication No.
The electrostatic precipitator disclosed in Japanese Patent Publication No. 1 (1995) has a dust collector formed by winding an anode plate made of a metal plate coated with a synthetic resin and a cathode plate bent in a waveform into a coil, and A protective cap made of an electrically insulating soft synthetic resin is fitted to an end of the plate opposite to the power supply connection end.

[0003] Further, an electric precipitator disclosed in Japanese Patent Application Laid-Open No. 8-99050 has an anode plate in which a metal foil is coated with a thin insulating film, and a cathode plate which is bent in a corrugated shape and overlapped.
It has a dust collecting part formed by winding in a circular or elliptical shape, and a wedge-shaped electrode terminal is driven into the anode plate and the cathode plate to connect the power supply electrode to the anode plate and the cathode plate. is there.

[0004]

However, in the dust collecting section of the above-mentioned reference, a pair of electrode plates comprising an anode plate and a cathode plate are fixed after being wound. It is difficult to securely fix the wound dust collecting portion until the device is mounted.

[0005] In addition, the work of attaching an insulating protective cap to one end of the anode plate needs to be performed independently, which is a major obstacle to automation.

[0006] Further, when the wedge is connected to the electrode terminal, a problem arises in the electrical conductivity because the electrical connection is in point contact. In the case of a narrow anode plate, a narrow wedge must be used, which makes the work difficult.

Accordingly, the present invention provides a dust collecting device for an electric dust collector and a method for manufacturing the same, which has a structure which can easily form a dust collecting device and which can be reliably connected to an electrode terminal. It is in.

[0008]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a first case which is disposed between a charging unit and a filter unit, and is formed by covering a conductive plate with an insulating member. An electrode plate, and a second electrode plate formed in a corrugated shape and having a polarity opposite to that of the first electrode plate, wherein the first and second electrode plates are perpendicular to the direction of air flow. In a dust collector of an electric dust collector, a dust collector is formed by winding around a pair of winding shafts arranged at predetermined intervals on a central beam extending in the longitudinal direction at the center of the case. A locking portion for locking one end of the first electrode plate formed on one of the winding shafts, and locking one end of the second electrode plate formed at a predetermined position on the center beam. a fixing portion, at a substantially central between the pair of winding axis, Intention the dust collecting unit to the central beam side Lies in the and a stay for lifting fixed (claim 1).

According to the present invention, a winding shaft having a locking portion for locking one end of the first electrode plate on a central beam extending in the longitudinal direction at the center of the case, and a pair of the winding shaft and the winding shaft. And a fixing portion that locks one end of a second electrode plate formed at a predetermined position between the pair of winding shafts, and one end of the second electrode plate is engaged with the winding shaft. The first electrode plate and the second electrode plate fixed to the stop portion and the fixing portion are wound around the pair of winding shafts alternately to form a dust collection portion, and the pair of windings is formed by a stay. Since the dust collecting portion is pinched and fixed substantially at the center of the shaft, manufacture and fixing of the dust collecting portion can be facilitated.

[0010] The locking portion may include an insertion space into which one end of the first electrode plate is inserted from the center of the center beam, and holding means for holding the first electrode plate in the insertion space. An inner insulating wall surrounded around the tip of the first electrode plate, an outer peripheral wall of a winding shaft formed around the inner insulating wall and contacting the second electrode plate, and the inner insulating wall. It is preferable that the insulating layer is formed by an insulating space formed between the outer peripheral wall and the outer peripheral wall. Further, it is preferable that the locking portion has an opening on a side other than the center beam , and the lid closing the opening has a lid-side insulating wall inserted into the insulating space. ). Furthermore, the lid is
It is desirable that the filter unit is formed integrally with the case.

As described above, the locking portion formed on one of the winding shafts is connected to the insertion space into which the end of the first electrode plate is inserted and the first electrode plate inserted into the insertion space. an inner insulating walls囲設the end, by which is formed with an insulating space between the outer peripheral wall of the and the inner insulating walls winding axis, the first electrode plate and the one winding axis It is possible to ensure insulation between the first electrode plate wound first and the second electrode plate. In addition, by inserting a lid-side insulating wall formed on a lid that closes the open end of the winding shaft into the insulating space, the insulation can be further improved.

Further, an electrode holding wall protrudes from a side end of the case, and the other end of the first electrode plate is bent so as to sandwich the electrode holding wall, and is located on one of the electrode holding walls. The outer cover of the first electrode plate is removed to expose the conductive plate, and the first electrode plate on one side of the electrode holding wall, the electrode holding wall, and the other side of the electrode holding wall are removed. Forming a through-hole penetrating the first electrode plate, disposing a bracket outside the first electrode plate located on the other side of the electrode holding wall;
The first electrode plate on one side of the electrode holding wall, the electrode holding wall, and the other side of the electrode holding wall, between the bracket and the screw through the screw from the exposed side of the conductive plate. The first electrode plate is sandwiched and fixed so as to be connected to a power supply electrode (claim 5). This ensures that the other end of the first electrode plate is joined to the power supply electrode.

Still further, according to the present invention, a rectangular case having an opening is provided between a charging unit and a filter unit.
A first electrode plate formed by covering a conductive plate with an insulating member; and a second electrode plate formed in a corrugated shape and set to an electrode opposite to the first electrode plate, And the second electrode plate is laminated vertically to the direction of air flow, and wound around a pair of winding shafts arranged at a predetermined interval on a center beam extending in the longitudinal direction at the center of the case. In a dust collector of an electric precipitator having a dust collecting portion, one end of the first electrode plate is locked to a locking portion formed on one of the winding shafts, and one end of the second electrode plate is locked. Is fixed to a fixing portion formed at a predetermined position of the center beam, and a plurality of times are wound around the pair of winding shafts so that the first electrode plate and the second electrode plate are alternately positioned. Winding to form an elliptical dust collecting part,
By means of the stay, the gathering is performed at substantially the center between the pair of winding shafts.
The present invention is characterized in that a dust part is brought close to the center beam side and fixedly held therebetween (claim 6).

According to this method, it is possible to automate the formation of the dust collecting device having the above-described structure of the present invention, and to improve the assembling workability.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the dust collecting unit of the electric dust collector includes at least a charging device 100, a dust collecting device 200,
And the filter device 300. The charging device 100 includes a linear electrode 101 to which a high voltage is applied, and a plate-shaped negative electrode plate 1 alternately arranged with the linear electrode 101.
02, which charges dust contained in the air passing therethrough.

The dust collector 200 has a structure in which first electrode plates (dustless tapes) 1 serving as anodes and second electrode plates (collector plates) 2 serving as cathodes are alternately arranged. This is to adsorb dust charged by the charging device 100. The dustless tape 1 is formed by coating a film made of an insulating member (25 in FIG. 9) around an elongated conductive plate (24 in FIG. 9), and a high voltage is applied thereto. The collector plate 2 is a metal plate formed in a corrugated shape and is connected to the ground side.

The filter device 300 is arranged downstream of the dust collecting device 200, and removes dust that could not be collected by the dust collecting device 200 with a filter 301.

As shown in FIG.
Is composed of a dust collecting section 3, a case 4, and a stay 9 for fixing the dust collecting section 3.

As shown in FIG. 3, the case 4 has an opening 5 through which air passes, and further has a center beam 10 extending in the longitudinal direction at the center of the case 4; And a plurality of beams that are connected in series. The center beam 10
A pair of winding shafts 6 and 7 are formed at predetermined intervals, and a fixing portion 8 for fixing one end of the collector plate 2 is formed between the pair of winding shafts 6 and 7. Also,
Mounting holes 11 and 12 for the stay 9 are formed at substantially the center of the pair of winding shafts 6 and 7 at both ends in the vertical direction of the center beam 10.

On the winding shaft 6, the dustless tape 1 is attached.
Is formed at one end thereof. As shown in FIGS. 2 and 4, the locking portion 6a is provided in an insertion space 61 into which one end 1a of the dustless tape 1 is inserted.
An insulating wall 62 that defines the insertion space 61 and surrounds the tip 1 d of the dustless tape 1, and an insulating wall formed between the insulating wall 62 and the outer peripheral wall 64 of the winding shaft 6. It is constituted by a space 63 and a holding means 65 for holding one end 1a of the dustless tape 1, and has a substantially U-shape in which the width gradually decreases toward the center of the center beam 10 as a whole. is there. The holding means 65
Is a first projecting from one side of the outer peripheral wall 64 to the other side.
And a second protruding wall 6 that protrudes from the other side to one side at a position shifted from the first protruding wall 65a.
5b.

In this embodiment, the cover 70 for closing the opening side of the winding shaft 6 shown in FIG. 5 is formed integrally with the case 300a of the filter device 300 shown in FIG. When the dust collecting device 200 is mounted and fixed to the case 300 a of the device, the lid 70 closes the opening side of the winding shaft 6. In addition, an insulating wall 71 inserted into the insulating space 63 is formed to protrude from the lid 70. In FIG. 8, reference numeral 302 denotes
303 is an opening opening on the side of the dust collecting device 200;
Denotes a mounting hole for the filter 301, and 304 denotes an outer opening.

As a result, the end 1d, which is the cut surface of the dustless tape 1, is in a state where the conductive plate is exposed. As shown in FIG. 6, the insulating walls 62 and 71, the insulating space 63, And the outer peripheral wall 64 separates the collector plate 2 from the collector plate 2, so that insulation can be reliably performed.

With the above construction, first, one end 1a of the dustless tape 1 is attached to the locking portion 6a, and one end 2a of the collected plate 2 is wound and fixed to the fixing portion 8.
The dustless tape 1 is wound from the locking portion 6a to the other winding shaft 7 side, and the collector plate 2 is wound from the fixing portion 8 to one winding shaft 6 side. As a result, the dustless tape 1 and the collector plate 2 which are alternately arranged are wound around the pair of winding shafts 6 and 7 so as to substantially cover the opening 5 so as to form the dust collecting portion 3. The other end sides of the stress tape 1 and the collector plate 2 are cut leaving a predetermined length.

Then, the stay 9 shown in FIG. 7 is attached to the dust collecting portion 3 so that the short direction of the dust collecting portion 3 (the direction perpendicular to the extending direction of the central beam 10) is pinched toward the central beam 10. The meshing pieces 9a formed on both ends of the stay 9
9b is inserted through the mounting holes 11 and 12. After the meshing pieces 9a, 9b are inserted, the claw portions 9c, 9d formed at the tips of the meshing pieces 9a, 9b mesh with the opposite peripheral edges to prevent the stay 9 from falling off. At this time, the engaging pieces 9a and 9b are urged outward by the restoring repulsive force of the dust collecting section 3, so that the claws 9c and 9d are reliably engaged with each other.

As a result, the dust collecting portion 3 can be securely fixed.
Can be automatically performed, and the transition to the next step is facilitated, so that the whole can be automated.

The other end of the dustless tape 1 is fixed to one side edge of the case 4 on an electrode holding wall 26 which stands vertically to the case 4. This electrode holding wall 26
In this embodiment, the dust collecting portion 3 of the case 4
The case 4 protrudes from the case end of the charging unit 100 mounted on the side opposite to the side in which the notch is formed at the side end of the case 4. The other end 1b of the dustless tape 1
Is bent so as to sandwich the electrode holding wall 26. Hereinafter, the electrode holding wall 2 of the dustless tape 1 will be described.
The portion located outside the case 6 is an outer end 1b ', and the portion of the electrode holding wall 26 of the dustless tape 1 located inside the case is an inner end 1b ".

As shown in FIGS. 9 and 11, the outer end 1b 'of the dustless tape 1 is covered with a coating 2 in a predetermined range.
5 is formed on the exposed portion of the conductive plate 24, and a through hole 2 passing through the outer end 1b ', the electrode holding wall 26 and the inner end 1b "is formed in the center of the exposed portion.
8 are formed. Then, a screw 21 with a washer 22 attached is passed through the through hole 28 from the outer end 1b 'side,
Screw hole 2 of bracket 20 arranged on the side of inner end 1b "
0c to fix the dustless tape 1 to the electrode holding wall 26. In particular, the bracket 20
As shown in FIG. 10, the inner end 1b ″ of the dustless tape 1
Side walls 20a, 20b and locking pieces 20d that abut against the side surfaces of
Are formed. The locking piece 20d is inserted into a locking hole 27 formed in the electrode holding wall 26, and is for positioning the bracket 20 and preventing the bracket 20 from rotating when screwed.

The dustless tape 1 is provided with the screw 2
1, the washer 22 or the bracket 20 is applied to the anode by being connected to the power supply terminal, but the connection position of the power supply terminal is not particularly limited.

The other end 2b of the collector plate 2
Is fixed to a bracket 2c connected to a ground terminal by a rivet 2e, as shown in FIG.

The dust collector 200 configured as described above is
The charging unit 100 and the filter device 300 are mounted before and after that, and further connected to the power supply unit 400 to form a dust collection unit of the electric precipitator.

[0032]

As described above, according to the present invention, one end of the first electrode plate and one end of the second electrode plate constituting the dust collecting portion of the dust collecting device can be easily mounted. Therefore, the winding of the first electrode plate and the second electrode plate becomes easy, and the insulation of the end portions of the first electrode plate can be sufficiently secured by an easy configuration. Manufacturing can be aimed at.

Further, since the fixing of the dust collecting portion can be easily performed by attaching the stay, the wound state of the dust collecting portion can be easily maintained even when the process proceeds to the next step. In addition, automation as a whole can be achieved.

Further, since the connection of the first electrode plate to the power source can be reliably performed, the dust collector can be operated stably.

Further, since the dust collecting portion is sufficiently fixed by the stay, it is easy to remove and clean only the dust collecting device, and the dust collecting effect of the dust collecting portion can be maintained.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a dust collection unit of an electric dust collector.

FIG. 2 is a plan view showing a configuration of a dust collector according to the embodiment of the present invention.

FIG. 3 is a plan view showing a configuration of a case of the dust collecting device.

FIG. 4 is a plan view of a locking portion formed on one of the winding shafts.

FIG. 5 is a plan view of a lid for closing an open end of a winding shaft having the locking portion.

FIG. 6 is an explanatory sectional view showing a state near the locking portion.

FIG. 7 is a side view of the stay.

FIG. 8 is a perspective view showing a case of the filter device.

FIG. 9 is a perspective view showing the vicinity of an electrode holding wall to which the other end of the first electrode plate is fixed.

FIG. 10 is a perspective view of a bracket used to fix the other end of the first electrode plate.

FIG. 11 is an explanatory sectional view near the electrode holding wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st electrode plate (dustless tape) 2 2nd electrode plate (collector plate) 3 Dust collecting part 4 Case 5 Opening part 6, 7 Winding shaft 6a Locking part 8 Fixing part 9 Stay 10 Center beam 20 Bracket 21 Screw 22 washer 24 conductive plate 25 insulating member 26 electrode holding wall 61 insertion space 62 insulating wall 63 insulating space 64 outer peripheral wall 65 holding means 70 cover 71 insulating wall 100 charging device 200 dust collector 300 filter device 301 filter

Claims (6)

(57) [Claims] 1. A rectangular case having an opening, a first electrode plate disposed between a charging unit and a filter unit and formed by covering a conductive plate with an insulating member, and a corrugated-shaped first plate. A second electrode plate having a polarity opposite to that of the first electrode plate, wherein the first and second electrode plates are stacked vertically with respect to the direction of air flow, and the center of the case is elongated. An electric dust collector in which a dust collecting portion is formed by winding around a pair of winding shafts arranged at a predetermined interval on a central beam extending in the direction, the dust collecting device being formed on one of the winding shafts. A locking portion for locking one end of the first electrode plate; a fixing portion for locking one end of the second electrode plate formed at a predetermined position of the center beam; At a substantially center between the stays, a stay for holding and fixing the dust collecting portion toward the center beam side. Dust collector of electric dust collector. 2. An insertion space into which one end of the first electrode plate is inserted from a center direction of the center beam, and a holding means for holding the first electrode plate in the insertion space. An inner insulating wall surrounded around the tip of the first electrode plate;
Characterized in that the inner insulating formed on the surrounding walls and the second electrode plate is configured with an outer peripheral wall of the winding shaft abutting, by an insulating space formed between the inner insulation wall and the outer peripheral wall The dust collector for an electric dust collector according to claim 1. 3. The locking portion has an opening on a side other than the center beam side, and a lid closing the opening has a lid-side insulating wall inserted into the insulating space. The dust collecting device for an electric dust collector according to claim 2, comprising: 4. The dust collector of claim 3, wherein the lid is formed integrally with the case of the filter. 5. An electrode holding wall protrudes from a side end of the case, and the other end of the first electrode plate is bent so as to sandwich the electrode holding wall, and is located on one of the electrode holding walls. The outer cover of the first electrode plate is removed to expose the conductive plate, and the first electrode plate on one side of the electrode holding wall, the electrode holding wall, and the other side of the electrode holding wall are removed. Forming a through-hole penetrating the first electrode plate, disposing a bracket outside the first electrode plate located on the other side of the electrode holding wall, and passing a screw through the exposed side of the conductive plate. A first electrode plate on one side of the electrode holding wall, the electrode holding wall, and a first electrode plate on the other side of the electrode holding wall are sandwiched and fixed between the bracket and the power supply electrode. The dust collector of an electric dust collector according to claim 1, wherein the dust collector is connected. 6. A rectangular case having an opening, a first electrode plate disposed between a charging unit and a filter unit and formed by covering a conductive plate with an insulating member, and a corrugated-shaped first electrode plate. A second electrode plate having a polarity opposite to that of the first electrode plate, wherein the first and second electrode plates are stacked vertically with respect to the direction of air flow, and the center of the case is elongated. In a dust collecting device of an electric precipitator in which a dust collecting portion is formed by winding around a pair of winding shafts arranged at a predetermined interval on a central beam extending in a direction, one end of the first electrode plate is The first electrode plate is locked to a locking portion formed on one of the winding shafts; one end of the second electrode plate is locked to a fixing portion formed at a predetermined position of the center beam; And the second electrode plate are wound alternately around the pair of winding shafts so as to be located alternately. Forming a portion, by means of a stay, substantially at the center between the pair of winding shafts ,
A method for manufacturing a dust collecting device for an electric dust collector, wherein a dust collecting portion is brought close to the center beam side to be clamped and fixed.