KR20040012139A - A hammer for rapping a collecting electrode of electrostatic precipitator - Google Patents

Abstract

PURPOSE: A hammer for rapping dust collecting plate of electric precipitator is provided which minimizes wear and loss of parts, prevents head from separating and dropping to the lower side to greatly reduce maintenance operation of the electric precipitator and improves facility operating ratio to improve dust collecting productivity. CONSTITUTION: In a rapping hammer which is connected onto rotation shaft(125) through hinge bolt(160), the rotation shaft(125) being rotated by driving speed reducer installed on an outer part of electric precipitator, and in which head(150) is rotationally connected to the hinge bolt(160) so that the head(150) is rotated according to rotation of the rotation shaft(125) to separate dust stuck to dust collecting plate by rapping a rapping bar extended from the dust collecting plate, the hammer(1) for rapping the dust collecting plate of the electric precipitator is characterized in that a pin(10) for fixing brackets(152a,152b) extended from the head(150) to the hinge bolt(160) passes through holes of the hinge bolt(160) and the brackets(152a,152b) respectively in the loosened state, both ends of the pin(10) form welding parts on both sides of the brackets(152a,152b) so that the hinge bolt(160) is rotationally connected to the brackets(152a,152b) by connecting the pin(10) to the brackets(152a,152b).

Description

A HAMMER FOR RAPPING A COLLECTING ELECTRODE OF ELECTROSTATIC PRECIPITATOR}

The present invention relates to a dust collecting plate hitting hammer of an electrostatic precipitator for collecting dust, which is an industrial waste contained in a hot gas generated when molten iron is manufactured from molten steel, using an electrostatic force, and more particularly, wear and loss of parts. Of the dust collecting plate hitting hammer of the electric dust collector, which is improved to minimize the maintenance work by preventing the damage to the equipment by the head separated and falling to the bottom, and to increase the productivity of the dust collection work by improving the equipment operation rate. will be.

In general, an electrostatic precipitator, which is a dry dust collector of a steel mill, cannot collect dust contained in exhaust gas generated during forging of the converter into the atmosphere.

To this end, as shown in FIGS. 1 and 2, the discharge electrodes 112 for supplying electricity are installed in a plurality of rows within the electrostatic precipitator 100, and the dust collecting plates 110 are spaced between the discharge electrodes 112 at regular intervals. When the dust passes between the discharge electrode 112 and the dust collecting plate 110, the dust is attached to the dust collecting plate 110 by electrostatic force, and the dust attached to the dust collecting plate 110 is collected by the impact of the hammer hitting the dust collecting plate 110. The dust and the like fall to the bottom of the dust collector, and is sent to the chain conveyor (not shown) by a scraper (not shown) is collected in the hopper.

In the above process, the conventional hammer hammer 120 that drops the dust attached to the dust collecting plate 110 is often troubled in the post-process due to early wear and dropping at the connection portion, and the use of a lot of maintenance costs It causes problems in molten steel manufacturing.

That is, when the exhaust gas reaches the inside of the electrostatic precipitator 100, the exhaust gas passes between the dust collecting plates 110 and the discharge electrodes 112 arranged at a predetermined interval, and electrostatic force is generated between the dust collecting plates 110 and the discharge electrodes 112. Dust generated is attached to the dust collecting plate (110).

At this time, when the dust attached to the dust collecting plate 110 can not fall, the dust attached to the dust collecting plate 110 is grounded by contacting the discharge electrode 112, the electrostatic precipitator 100 due to the electric short circuit in the electrostatic precipitator 100 Is stopped and its function is lost, and the dust collection process is not performed, and a large amount of dust is discharged from the stack (not shown), which causes enormous obstacles to environmental pollution.

Therefore, a rapping device for dropping dust attached to the dust collecting plate 110 to the bottom of the electrostatic precipitator 100 is required.

When the dust collecting plate 110, the hammer 120 for hitting the electric dust is started, the hammer shaft drive reducer 122 installed on the outside of the electrostatic precipitator is rotated, the shaft 125 installed in a straight line is rotated As a result, the hammer hammer 120 assembled in a row on the shaft 125 rotates to knock off the wrapping bar 128 extending from the dust collecting plate 110.

In addition, in the inside of the electrostatic precipitator 100, when the shaft 125 rotates, bearing blocks 140 as shown in FIG. 5 are positioned in the middle of the shaft 125 to smoothly support and rotate the shaft 125. In this case, smooth rotation of the shaft 125 is possible.

The bearing block 140 is provided with a plurality of support rollers 142 to support the shaft 125 to the upper side to achieve a smooth rotation of the shaft 125.

Meanwhile, as shown in FIGS. 3 to 4, the conventional dust collecting plate hammer 120 has a pair of head brackets 152a and 152b fixed to the center of the tip of the hammer. The hinge bolt 160 is fixed by the rivet 154, the bush 158 is inserted into the hole 156 formed in the upper portion of the bracket (152a, 152b), the upper end is fixed to the hammer shaft (125) Is inserted into the upper end of the bracket (152a, 152b) is assembled to be rotatable with the pin (162).

In addition, the upper end of the hinge bolt 160 is coupled to the nut 166 and the washer 168 through the shaft 125, so that the hinge bolt 160 rotates according to the rotation of the shaft 125. The head 150 is rotated through the brackets 152a and 152b, and the wrapping bar 128 extending from the dust collecting plate 110 is hit during the rotation of the head 150.

In addition, the hammer 120 hitting the wrapping bar 128 is bent at the portion through the pin 162 to which the hinge bolt 160 and the brackets 152a and 152b are connected due to the rotation of the shaft 125. 6, a series of operations are carried out to the upper side of the wrapping bar 128 as shown by the dashed line in FIG. 6, and the rotation of the shaft 125 passes over the shaft 125 again and strikes the wrapping bar 128. To repeat.

However, the conventional hammer hammer 120 as described above is loosely assembled with the pin 162 and the bush 158 for the smooth rotation of the hammer when the shaft 125, the hinge bolt 160 and the pin 162 is tightly fitted, and the pin 162 is knurled in order to improve friction with the inner circumferential surface of the hinge bolt 160, and then is fixed by the split pin 172. .

The assembly structure of the conventional dust collecting plate hitting hammer 120 to form a complex structure as described above, the friction of the pin 162 and the bush 158 and the high temperature (about 200 ℃) inside the electrostatic precipitator when the hammer 120 is rotated The hammer 120 is deteriorated by the premature wear of the bush 158 and the pin 162. In addition, the dividing pin 172 is easily broken by the continuous rotation and is pulled out of the bush 158 so that the hammer head 150 is separated from the hinge bolt 160, and the scraper (not shown) in the lower part of the dust collector is dropped downward. And the post-stage process chain conveyor (not shown) to cause frequent equipment accidents.

Therefore, the molten steel of the converter is not made smoothly, due to the excessive use of maintenance costs and the loss of the function of the electrostatic precipitator, the dust is emitted to the atmosphere, causing a cost increase such as environmental pollution.

The present invention is to solve the conventional problems as described above, the object of which is to minimize the wear and loss of parts, and to prevent the damage to the equipment by the head is separated and falls to the bottom to greatly reduce the maintenance work of the dust collecting equipment The present invention provides a hammer for hitting the dust collector plate of the electric dust collector, which is improved to increase the productivity of the dust collection operation by improving the facility operation rate.

1 is a plan sectional view showing the inside of a general electrostatic precipitator;

2 is a longitudinal sectional view showing the inside of a general electrostatic precipitator;

3 is an exploded perspective view showing a dust collecting plate hitting hammer according to the prior art;

4 is a detailed view showing a dust collecting plate hitting hammer according to the prior art,

a) is the left side view, b) is the right side view

c) is a detailed view of part "A";

5 is a partial cutaway perspective view of a bearing block for supporting a shaft for rotating a hammer according to the prior art;

6 is an operational state diagram in which the hammer hits the lapping plate extending from the dust collecting plate according to the prior art;

7 is an exploded perspective view showing a hammer for hitting the dust collecting plate of the electrostatic precipitator according to the present invention;

8 is a detailed view showing a dust collecting plate hammer according to the present invention,

a) is the left side view, b) is the right side view

c) is a detail of the "B" part.

<Description of the symbols for the main parts of the drawings>

10 ..... pin 12 ..... weld

100 .... electrostatic precipitator 110 ..... dust collector

112 .... discharge electrode 120 .... conventional hammer

122 .... Drive Reducer 125 ..... Shaft

128 .... Wrapping Bar 140 .... Bearing Block

142 .... support roller 150 ... hammerhead

152a, 152b .... Bracket 160 ..... Hinge Bolt

172 .... Split pin

In order to achieve the above object, the present invention is connected via a hinge bolt on a shaft that is rotated by a drive reducer installed outside of the electrostatic precipitator, and the head is connected to the hinge bolt to be rotatable, respectively, to rotate the rotary shaft. In the hammer for hitting the head rotates to separate the dust attached to the dust collecting plate by hitting the wrapping bar extending from the dust collecting plate, the pin for fixing the bracket extending from the head to the hinge bolt is the hinge bolt and the bracket To penetrate the holes of the respective loose, the both ends of the bracket is welded to both sides of the bracket to provide a hammer for hitting the dust collector plate of the electric dust collector, characterized in that for coupling the hinge bolt and the bracket in a rotatable state. .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the dust collector plate hammer 1 of the electric dust collector according to the present invention, as shown in detail as an exploded view in FIG. 7, brackets 152a and 152b are fixed to both sides of the hammer head 150, respectively, and the head ( 150 and the brackets 152a and 152b are fixed by two rivets 154, and the holes 160a of the hinge bolts 160 are common to the holes 156 formed in the upper portions of the brackets 152a and 152b. The pin 10 penetrates into the fitting, and both ends of the pin 10 are connected to each other by forming a welding part 12 on the outer surface of the brackets 152a and 152b.

And, the upper end of the hinge bolt 160 is fitted into the hole (125a) of the shaft 125, the washer 168 above and below the shaft 125 to prevent shaking of the hammer (1) after assembly is completed It is assembled and fixed by tightening the nut 166 to the upper threaded portion (160b) of the hinge bolt (160).

Hitting hammer 1 assembled in this way is to drop the dust attached to the dust collecting plate 110, each time the rotation of the shaft 125, the hinge bolt 160 and the bracket (for smooth rotation of the hammer 1) The pins 10 connecting the 152a and 152b are formed to be somewhat smaller in diameter than the holes 160a of the hinge bolt 160 and are loosely assembled. When the diameter D1 of the hole 160a of the hinge bolt 160 is slightly larger than the diameter d1 of the pin 10, the inner circumferential surface of the pin 10 and the hole 160a of the hinge bolt 160 rotate smoothly. As a result, friction is minimized and durability is very large.

The present invention having such a configuration is operated as follows.

When the dust collector plate hitting hammer 1 of the electrostatic precipitator of the present invention rotates the drive reducer 122 installed outside the electrostatic precipitator 100 to drop dust attached to the dust collecting plate 110 of the electrostatic precipitator. The shaft 125 installed in a straight line rotates, and in this process, the bearing block 140 to support the weight of the head 150 assembled to the shaft 125 and the load of the shaft 125 which is the long axis. It is installed at regular intervals in the middle of the shaft 125 and is supported by an internal frame (not shown) of the electrostatic precipitator 100.

The bearing block 140 is assembled so that the two rollers 142 are rotatable for smooth rotation of the shaft 125, and the shaft 125 is placed on the rollers 142 so that the shaft 125 is smoothly rotated. Will help to rotate.

When the shaft 125 installed as described above rotates, dozens of hammers (1) assembled on the shaft 125 each rotate while hitting the wrapping bar 128 for hitting the dust collecting plate 110 provided on the lower side thereof. Dust attached to the dust collecting plate 110 is dropped to the bottom of the electrostatic precipitator (100).

In this process, both ends of the pin 10 form welds 12 and are fixed to the brackets 152a and 152b, and the outer diameter d1 of the pin 10 is the inner diameter D1 of the hole 160a of the hinge bolt 160. Since it is smaller, wear of the pin 10 and the hole 160a is minimized, and smooth rotation of the head 150 is ensured. In addition, since the thickness of the end portion 160c forming the hole 160a is larger than that of the conventional hinge bolt 160, durability of the hinge bolt 160 may be secured even by abrasion with the pin 10.

As the head 150 hits the wrapping bars 128 as described above, the dust dropped from the dust collecting plate 110 is discharged to the storage hopper by discharging the dust to a conveyor which is a post process by a scraper installed at the bottom of the electrostatic precipitator 100. Will be repeatedly operated.

According to the present invention as described above, the connection structure of the hinge bolt 160 and the brackets (152a, 152b) is simply made by simply rotating the structure through the coupling of the pin 10 and the welding portion 12, As the conventional split pin 172 is unnecessary, the hammer head 150 does not fall off.

In addition, when the thickness of the end portion 160c of the hinge bolt 160 to which the pin 10 is coupled is increased to increase, the wear life of the hinge bolt 160 and the pin 10 is largely secured, thereby almost hitting the hammer 1 ) The lifetime can be used semi-permanently.

Therefore, the wear and loss of parts are minimized, and the head 150 is separated and falls to the bottom, thereby preventing damage to the equipment, thereby greatly reducing the maintenance work of the dust collecting equipment, and improving the operation rate of the equipment to improve the productivity of the dust collecting work. An improved effect is obtained to increase.

Claims (2)

The hinge bolt 160 is connected to the shaft 125 rotated by the drive reducer 122 installed outside the electrostatic precipitator, and the head 150 is rotatably connected to the hinge bolt 160, respectively. In the hammer for hitting the head 150 is rotated in accordance with the rotation of the rotary shaft 125 to separate the dust attached to the dust collecting plate 110 by hitting the wrapping bar 128 extending from the dust collecting plate 110, The pins 10 for fixing the brackets 152a and 152b extending from the head 150 to the hinge bolts 160 are loosened from the holes of the hinge bolts 160 and the brackets 152a and 152b, respectively. It penetrates through, the both ends of the brackets (152a, 152b) by forming a welded portion 12 on both sides of the connection is characterized in that for coupling the hinge bolt 160 and the brackets (152a, 152b) in a rotatable state. Hammer for collecting dust collector of electric dust collector. The hole diameter D1 of the hinge bolt 160 is larger than the diameter d1 of the pin 10 so that the inner circumferential surfaces of the pin 10 and the hole 160a of the hinge bolt 160 are smooth. While rotating, the friction is minimized, and the end portion 160c forming the hole 160a of the hinge bolt 160 is formed to be thick, thereby ensuring its durability even by abrasion with the pin 10. Hammer for collecting dust collector of electric dust collector.