KR101641828B1

KR101641828B1 - Dust chacher and dust chacher cleaning device

Info

Publication number: KR101641828B1
Application number: KR1020150052309A
Authority: KR
Inventors: 천용권; 정승원; 김일수
Original assignee: 주식회사 포스코
Priority date: 2015-04-14
Filing date: 2015-04-14
Publication date: 2016-07-22

Abstract

According to the present invention, a dust catcher and a dust catcher cleaning device is to clean an internal part of the dust catcher separating and collecting dust contained in an exhaust gas. The dust catcher cleaning device comprises: an injection unit having a nozzle exposing a first injection port by being moved forward by a water pressure when water is supplied therein and injecting water inside the dust catcher; and a driving unit installed outside of the dust catcher, connected to the injection unit, and moving the injection unit forwards and backwards to insert and penetrate the injection unit into the dust catcher. The injection unit additionally comprises: a housing formed into a pipe with one end which is open and an other end which is closed, receiving water therein; and a restoring means pulling the nozzle installed inside the housing to an outer end of the housing. The nozzle is formed into a pipe shape with one end which is open and the other end which is closed, and an outer diameter corresponding to an inner diameter of the housing. The open end of the nozzle unit is connected to a cavity of the housing, and a first injection port is formed in the outer surface of the closed end.

Description

DUST CHACHER AND DUST CHACHER CLEANING DEVICE [0001]

The present invention relates to a dust catcher and a dust catcher cleaning apparatus, and more particularly, to a dust catcher and dust catcher cleaning apparatus for removing dust adhering to the inside of a dust catcher for collecting dust and gas generated in a blast furnace, .

Generally, the gas generated from the blast furnace contains toxic components, so a recycling facility is needed to recycle it. For this purpose, the dust and dust generated in the blast furnace are sent to the dust catcher to separate the dust. The dustcatcher is a primary cleaning facility that separates dry dust and gas contained in blast furnace gas generated from the furnace, which is the upper part of the blast furnace during blast furnace operation. The dustcatcher is a high temperature (about 100 to 200 ° C) high pressure (about 2.5 kg / The gas decelerates and rises as it passes through the cyclone (conical large diffuser) inside the dust catcher and is discharged to the gas outlet, causing the dust to fall to the bottom of the dust catcher. The discharged gas is then sent to a Bischoff scrubber, which is a secondary damping system.

In order to remove the dust, the dust is relatively large and heavy in the dustcatcher by the gravity sedimentation method using the cyclone, and the dust of the fine particles passing through the dust catcher and discharged together with the gas is the secondary cleaning facility, And is moved to a bischoff scrubber which is a vibration damper so as to be decompressed through spraying of the spray.

The above contents are shown in Fig. The dust and gas generated in the blast furnace 1 are sent to the dust catcher 10, and the gas, from which the dust is primarily removed, is secondarily damped in the bosh saw scrubber 3. The purified gas is sent back to the hot wind (2) and recycled in the blast furnace (1).

The dust of relatively large particles separated from the dust catcher sinks to the bottom of the dust catcher. A level meter is installed to detect how much the dust is loaded in the dust catcher by detecting the temperature of the thermocouple. When the dust stored in the dust catcher increases to a certain level and the level meter indicates "High", the discharge starts. Low ", the discharge of dust is stopped. Three dust collecting valves (dust shutoff, gas shutoff, dust control shutoff) are arranged vertically on the discharge passage formed at the lower part of the dust catcher. The dust is discharged to the dust transporting vehicle by a predetermined amount to discharge the dust, It will be recycled through the yard. In addition, two discharge passages are provided, and dust is periodically discharged using one of the discharge passages.

Although the original dry dust is not easily adhered to the inside of the dust catcher, in order to operate the blast furnace for high productivity, the temperature of the furnace is lowered to 100 ° C or lower, the temperature of the gas flowing into the dust catcher is lowered and condensate is formed on the inner wall of the dust catcher And the dust is attached. As a result, the capacity of the dust bin is reduced and the discharge passage is closed.

When the dust catcher dustbin and the discharge passage are clogged, there is no device for penetrating the dust catcher and the discharge passage. In the prior art, a physical impact is applied to the side of the cutoff body and the dust catcher from the outside, For this purpose, it is necessary for a long period of hard manual work that 2 ~ 3 operators intensively hit the sides of the discharge side in close proximity to discharge side, and the blast gas is leaked to the worker due to deformation, breakage, It was able to cause a gas poisoning disaster.

In addition, if the action is delayed after clogging, the amount of dust adhered increases. When a large amount of dust is attached and the discharge side is opened and an attempt is made to penetrate through an external impact, a large amount of dust adhered to the inside instantly collapses and is poured into the worker's side so that the worker is buried or is poisoned with blast furnace gas .

A conventional dust catcher is known from "Dirt auto exhaust system of dustcatcher " (Korean Patent Laid-Open Publication No. 10-2001-0059501 (Jun. The present invention mixes dust and water discharged from a dustcatcher into a dust cake and discharges it. However, the above-described invention has a limitation in not disclosing a configuration capable of solving the problem that the dust adheres to the dustcatcher main body and the discharge passage.

Further, a conventional cleaning apparatus is known in "Bishop drain pipe boring apparatus having multiple nozzles " (Korean Patent Laid-open Publication No. 2003-0043391 (Jun. According to the present invention, the dust sludge clogged in the drain pipe of the boshis scrubber can be pierced and removed without stopping the operation of the blast furnace, so that blast furnace operation loss and safety accident at the time of manual operation can be prevented. However, the injection nozzle of the present invention has a fixed injection direction, so that it is impossible to spray in the opposite direction, and there is a problem that it can be broken when an abrupt impact occurs.

Accordingly, there is a need for a new cleaning device and a dust catcher having the dust removing device, which can remove dust attached to the inside of the dust catcher without a break in the blast furnace, and prevent breakage of the dust during sudden dust collapse in the process.

Korean Patent Publication No. 10-2001-0059501 (July 2006) Korean Patent Publication No. 10-2003-0043391 (Jun. 2003) Korean Patent Publication No. 10-2010-0085695 (Jul. 29, 2010) Korean Patent Publication No. 10-2009-0028129 (2009.03.18)

SUMMARY OF THE INVENTION The present invention has been conceived to solve such a problem, and an object of the present invention is to provide a dust catcher and a dust catcher cleaning device that cleans a dust catcher that has been clogged by dust adhering to the inside thereof, have.

According to an aspect of the present invention, there is provided a dust catcher cleaning apparatus for cleaning the inside of a dust catcher for separating and collecting dust contained in an exhaust gas, A jetting portion including a nozzle through which the first jetting port is exposed to jet water into the dust catcher; And a driving unit that is installed outside the dust catcher and connected to the jetting unit, moves the jetting unit forward and backward to be inserted into the dust catcher, and rotates the jetting unit to adjust the jetting direction of water, The spraying unit may further include a housing having one end opened and the other end closed to form a pipe shape and supplied with water into the housing and a restoring means for pulling the nozzle installed inside the housing toward the other end of the housing, Is formed in a pipe shape having an outer diameter corresponding to the inner diameter of the housing, one end of which is opened and the other end of which is closed, one end of the opening communicating with the hollow of the housing and the other end being formed with a first injection port .

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Wherein the housing is provided with a supply port for supplying water to the hollow inside the housing, and the restoration means comprises a housing having one end fixed to the inner wall of the housing between the supply port and the nozzle, and the other end fixed to one end of the nozzle And is a spring.

And a nozzle case coupled to one end of the housing to prevent the nozzle from separating from the housing, wherein the nozzle case has a second jet opening at a position corresponding to the position of the first jetting port on the advancing nozzle Is formed.

A camera and a light installed in the nozzle case to look in the same direction as the first jetting port and a control unit for receiving the image taken by the camera and adjusting the jetting unit and the driving unit, And the control unit determines the degree of adhesion of the dust after cleaning by analyzing the image to determine whether to perform additional cleaning, and transmits the re-wash signal or the end signal To the first antenna.

An elastic spring installed on the housing and moving when the dust falls, an elastic spring connecting the collision plate and the housing to apply restoring force when the collision plate is moved, And a sensing unit including a sensing sensor.

Wherein the impingement plate is installed on a side surface of the housing and is disposed to face the first jetting port and has a center and a lower edge, the sensing sensor is in contact with the impingement plate .

And a controller for receiving the signal when the sensing sensor operates, blocking water supplied through the supply port, and transmitting a retraction signal to the driving unit to divert the jetting unit to the outside of the dust catcher.

The housing is formed with a groove in a circumferential direction on an outer circumferential surface thereof. The driving unit includes an actuator for generating a driving force, a rod moving forward and backward by receiving a driving force from the actuator, And when the rod is moved back and forth, the jetting portion is moved forward and backward in the same direction as the rod.

The driving unit may further include a rotation shaft coupled to the other end of the housing and a motor for rotating the rotation shaft, wherein the motor is coupled with the rod so that when the rod moves back and forth, the motor moves forward and backward in the same direction.

A dust catcher using a dustcatcher cleaning device is a dustcatcher for separately collecting and collecting dust contained in an exhaust gas. The dustcatcher includes a dust bin for loading dust falling off from a gas, a discharge passage for discharging dust from the dustbin, And when the water is supplied to the inside of the dust bin, the nozzle is advanced by the water pressure so that the jet port is exposed to separate the dust adhered to the discharge passageway and the dust bin, The dust catcher cleaning device according to claim 1, wherein the dust catcher cleaning device comprises: a housing having one end opened and the other end closed to form a pipe shape to supply water to the inside thereof; And the nozzle has an inner diameter of the housing and an inner diameter of the housing, And the other end is opened and the other end is closed. The open end communicates with the hollow of the housing, and the injection port is formed on the other end side.

Further comprising a penetrating gas nozzle formed on a lower side surface of the dust bin and formed on an upper portion of the dust catcher cleaning device for spraying a high pressure gas into the dust bin to push dust thereinto, And inserted into the dust-free space formed by injecting the high-pressure gas at the penetrating gas injection port.

The dust catcher and dust catcher cleaning apparatus according to the present invention has the following effects.

First, since the water is sprayed from the inside without opening the dust catcher, clogging of the inside of the dust catcher can be solved without blowing the blast furnace.

Second, the toxic gas inside the dust catcher is not leaked during the washing process, so that the safety accident can be prevented.

Third, it is easy to check whether the dust is cleaned, and it is possible to decide whether or not to further clean the dust.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the circulation of gas generated in a blast furnace. FIG.
2 is a cross-sectional view illustrating a dust catcher according to an embodiment of the present invention;
3 is a cross-sectional view of a dust catcher cleaning apparatus according to one embodiment of the present invention.
4 is a cross-sectional view showing a state in which water is supplied into the dust catcher cleaning device to advance the nozzle and spray water.
5 is a cross-sectional view showing a dust catcher rotated and changed in the spraying direction.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

Hereinafter, a dust catcher and dust catcher cleaning apparatus according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

2 and 3, the dust catcher cleaning apparatus 100 is an apparatus for cleaning the inside of the dust catcher 10 for collecting dust and gas generated in the blast furnace 1, A nozzle 112 and a restoring means 113 to advance and retract the jetting unit 110 and the jetting unit 110 for spraying water into the dust catcher 10 to the inside and the outside of the dust catcher 10 (Not shown).

The dust catcher 10 is a place where the gas and dust D generated in the blast furnace are primarily passed and the gas escapes through the gas outlet 13 on the upper portion of the dust catcher 10. The dust D, (11), which is the body of the dust container (10), and then discharged.

The jetting section 110 inserted into the dust catcher 10 includes a cylindrical housing 111 and a housing 111. When water is supplied to the housing 111, the jetting section 110 is advanced by water pressure to expose the first jetting port 114a A nozzle 112 for spraying water and a restoration means 113 for retracting the nozzle 112 which has advanced by water pressure when the supply of water is stopped.

One end of the housing 111 to which the nozzle 112 is inserted is opened and the other end thereof is closed. In the closed direction, a supply port 117 through which water is supplied is formed. The position of the supply port 117 to be formed is not particularly limited, but is shown as being formed on the side of the other end in the embodiment of Fig. Although not shown, a flexible hose for supplying water to the outside of the supply port 117 is connected to prevent breakage or detachment of the ejector 110, which will be described later, in the forward and backward rotational motion.

The nozzle case 115 is formed so as to extend from one end of the housing 111 in the same sectional area as the housing 111 and does not interfere with the path of water sprayed by the first jet opening 114a when the nozzle 112 is advanced A second jetting port 114b is formed at one side of the nozzle 111 and serves as a kind of stopper to prevent the nozzle 112 from moving away from the housing 111 by a predetermined amount or more. The nozzle case 115 may be a separate structure from the housing 111, but may be integral with the housing 111. That is, when the housing 111 and the nozzle case 115 are separated from each other, the nozzle 112 is inserted into the nozzle case 115, and the nozzle 112 is inserted into the housing 111 and the nozzle case 111 115 may be welded and integrated. There are many other ways to combine the two configurations.

The nozzle 112 has an outer diameter of an outer diameter corresponding to the inner diameter of the housing 111, and is formed into a pipe shape having one end opened and the other end closed, one opened end communicating with the hollow of the housing 111, The first injection port 114a is formed in the first injection port 114a.

The nozzle 112 and the housing are formed in a similar shape by being formed in the shape of a closed pipe with one direction being opened and the other direction being closed. The outer diameter of the nozzle 112 is the same as the inner diameter of the housing 111 so that the nozzle 112 can be inserted into the housing 111 while being engaged. The direction in which the nozzle 112 is inserted into the housing 111 is determined by inserting one open end of the nozzle 112 toward the inside of the housing 111 so that the hollow inside the housing 111 and the hollow inside the nozzle 112 To communicate with each other. Accordingly, the water supplied to the housing 111 can be transferred to the nozzle 112 to advance the nozzle 112. As the nozzle 112 moves forward, the first jet opening 114a formed on the side surface of the nozzle 112 is exposed, and water is jetted through the first jet opening 114a.

The restoring means 113 has a structure in which the nozzle 112 is pulled toward the other end of the housing 111 and one end of the nozzle 112 is fixed to the inner wall of the housing 111 between the supply port 117 and the nozzle 112, And is preferably a tension spring fixed to one end of the elastic member 112.

When water is supplied to the housing 111, the nozzle 112 advances by the water pressure to spray water through the first jet opening 114a. When the supply of water is interrupted, it is necessary to retreat the nozzle 112 again to close the first jet opening 114a. The restoring means 113 is a tension spring that applies a tensile force to pull the two components together and connects the inner wall of the housing 111 and the nozzle 112 to force the nozzle 112 to be inserted into the other end of the housing 111 . When water is supplied to the housing 111, the water pressure exceeds the tensile force of the restoration means 113. When the water pressure rises above a certain level, the nozzle 112 advances and the first jet opening 114a is exposed. One end of the restoration means 113 may be attached to the inner wall of the housing 111, or may have a protrusion formed inside the housing 111 to be attached thereto. The other end of the restoration means 113 is coupled to one end of the nozzle 112 and can be coupled to the nozzle 111 by using any combination of the two as long as it does not interfere with the forward and backward movement of the nozzle 112 and the communication between the nozzle 112 and the housing 111 It is irrelevant.

It is preferable that the housing 111 is in the shape of a mortise having a circumferential groove 116 formed on the outer circumferential surface of the housing 111. The groove 116 is not in communication with the hollow of the housing 111. [ The role of the groove 116 will be described later in more detail in the description of the driving part 120.

The driving unit 120 includes an actuator 121 that generates a driving force, a rod 122 that is moved forward and backward by receiving a driving force from the actuator 121, a rod 122 that is connected to the rod 122, And a head 123.

The rod 122 is installed so as to move back and forth in the same direction as the housing 111 and the actuator 121 functions as a power source for moving the rod 122 back and forth. The actuator 121 may be a cylinder or a motor drive body, and may be any structure as long as the rod 122 can be moved back and forth by a required length.

The head 123 is coupled to the rod 122 and moves back and forth with the rod 122 so that a portion of the head 123 is inserted into the groove 116 of the housing 111 and moves along the forward / The housing 111 is also connected to the front and rear.

As shown in the figure, the shape of the head 123 may be a simple rod shape, but in another embodiment, the shape of the head 123 may be formed into a ring shape surrounding the groove 116. [ Since the head 123 is held in the housing when the rod 122 is moved back and forth by the operation of the actuator 121 as the head 123 is inserted into the groove 116 formed in the housing 111, 111 can be moved forward and backward together and the coupling between the head 123 and the groove 116 can be maintained without loosening even if the housing 111 rotates due to the shape of the groove 116 formed along the circumference.

The driving unit 120 further includes a rotating shaft 125 coupled to the other end of the housing 111 and a motor 124 for rotating the rotating shaft 125. The motor 124 is coupled to the rod 122 .

The motor 124 and the rotating shaft 125 are connected to the other end of the housing 111 to rotate the housing 111 and are moved back and forth together with the housing 111 by the forward and backward movement of the rod 122. At this time, since the motor 124 itself must not rotate in order to rotate the housing 111 using the motor 124, it is necessary to fix the motor 124 to the outside of the housing 111. Therefore, by fixing the motor 124 to the rod 122, the rotation of the motor 124 is prevented, and the housing 111, the motor 124, and the rotating shaft 125 are both simultaneously It can go back and forth. For this purpose, it is preferable to provide a support for connecting between the motor 124 and the rod 122.

The camera 131 and the light 132 are installed in the nozzle case 115 in such a manner as to be embedded in the nozzle case 115. The camera 131 and the light 132 are installed so as to face the same direction as the first jet opening 114a, It is possible to confirm whether the dust attached to the inside of the dust catcher 10 has been separated. If the separation of the dust is not sufficient, the water is sprayed again to perform cleaning.

The operator may check the image of the camera 131 and instruct the re-cleaning to determine whether or not the dust has been separated. However, the operator may receive the image taken by the camera 131 and receive the image of the spray unit 110 and the driving unit 120 It is preferable to use the control unit 150 that adjusts the temperature.

When the camera 131 transmits the photographed image to the control unit 150, the control unit 150 analyzes the image to determine the degree of attachment of the dust D, determines whether the dust D is to be further washed, 120 < / RTI >

Various image analysis techniques are already known in the image analysis method, and the detailed explanation is omitted because they are outside the scope of the present invention. For example, when the number of pixels equal to or less than a predetermined brightness with respect to the total number of pixels of the photographed image is equal to or more than a predetermined value, it can be determined that the dust is attached.

When the dust is suddenly collapsed in the process of spraying water into the dust catcher 10 to separate the dust, an excessive load is applied to the spray part 110, the spray part 110 may be damaged. Therefore, a structure for detecting the collapse of the dust and retracting the jetting section 110 is required.

A collision plate 141 which is provided on the housing 111 and descends when the dust D falls thereon and a collision plate 141 which connects the collision plate 141 and the housing 111 and has a restoring force And a sensing unit 140 disposed on the housing 111 and including a sensing sensor 143 that senses the descent of the impact plate 141. The sensing unit 140 may include an elastic spring 142 for applying an elastic force to the impact plate 141,

The impingement plate 141 is installed on a side surface of the housing 111 so as to face the direction of the first jet opening 114a and prevents dust from accumulating on the impingement plate 141 It is formed in a shape that the center is high and gets lower toward the edge. The impact plate 141 is connected to the housing 111 through an elastic spring 142 so as to be spaced apart from the housing 111 by a predetermined distance. And generates a dust drop warning signal. The detection sensor 143 is a contact type sensor and is operated in contact with the impingement plate 141.

The control unit 150 receives the operation signal of the detection sensor 143 and cuts off water supplied through the supply port 117 and the nozzle 112 is retracted into the housing 111 as the supply of water stops. The control unit 150 also transmits a backward signal to the driving unit 120 to move the rod 122 backward so as to disengage the jetting unit 110 from the dust catcher 10. As soon as the pressure due to the dust collapse is sensed, the jetting of the water is stopped and the jetting section 110 is retracted to the outside of the dust catcher 10 to prevent breakage.

Next, the dust catcher 10 using the dust catcher cleaning apparatus 100 will be described.

As shown in FIG. 2, the dust catcher is a device for separating and discharging the dust D discharged from the blast furnace and the gas. The dust catcher 11 includes a dust bin 11 for storing the dust D falling from the gas, The discharge passage 14 for discharging the dust D from the bin 11 and the lower side of the dust bin 11 are inserted and rotated forward and backward and when the water is supplied, the nozzle 112 is opened by the water pressure And a dust catcher cleaning device 100 for spraying water to separate the dust passage D and dust D adhered to the inside of the dust bin 11.

The discharge passage 14, which is frequently closed by the dust, penetrates the water injected from the dust catcher cleaning apparatus 100 to eliminate clogging. Further, the dust catcher cleaning apparatus 100 can adjust the spraying direction of the water, in order to clean both the discharge passage 14 located at a relatively lower position and the side wall of the dust bin 11 located at a relatively upper position. The detailed configuration thereof is different from that of the dust catcher cleaning apparatus 100 described above.

In order for the dust catcher cleaning apparatus 100 to enter the dust bin 11, it is first necessary to secure an entry space. The dust catcher cleaning apparatus 100 further includes a penetrating gas injection port 200 formed on a lower side surface of the dust receptacle 11 for spraying gas into the dust receptacle 11, The dust is injected into the dust bin 11 before the dust 100 is introduced and the dust is pushed out to enter the dust catcher cleaning apparatus 100 into the space thus formed.

At this time, it is preferable that the dust catcher cleaning apparatus 100 is inserted at a predetermined angle, about 15 degrees upward, and enters the space formed by the gas injected from the gas first injection port 114a.

Next, an operation of cleaning the inside of the dust catcher 10 by the dust catcher cleaning apparatus 100 will be described.

2, 3 and 4, a gas is first injected through a gas first injection port 114a formed on a lower side surface of the dust bin 11 to form a dust-free space below the dust bin 11 And the dust catcher cleaning apparatus 100 enters the space thus formed. When the rod 122 advances by the operation of the actuator 121, the housing 111 advances and enters the dust bin 11 in conjunction therewith.

As shown in FIGS. 2 and 5, the dust catcher cleaning apparatus 100 which has entered the dust bin 11 is located above the plurality of cut-off cutters, and the first jetting port 114a is directed downward The motor 124 is adjusted. When the first jetting port 114a is adjusted to face the blocking side, the water W is supplied through the supply port 117 of the housing 111. When the pressure of the water is equal to or higher than a predetermined water pressure, So that the first jet opening 114a is exposed and water is sprayed to perform the penetration operation.

At this time, the dust cut-off side 15 is opened and sprayed for one minute, and the gas cut-off side 16 and the dust control cut-off side 17 are sequentially opened to spray the high pressure water for one minute, When the penetrating operation of the cut-off edges formed on the discharge passage 14 is completed, the supply of water is stopped and the motor is operated so as to change the direction in which the first jetting port is directed from the bottom to the top.

As shown in FIGS. 2 and 4, when the first jet opening 114a is directed upward, water is sprayed to separate the dust attached to the wall surface of the dust bin 11. The separated dust is discharged to the outside through the discharge passage 14 that has passed through in advance, so that the removal of the dust adhered to the inside of the dust bin 11 is completed. At this time, the direction of the water spraying in the upward direction may be slightly changed to separate the dust attached to the other direction. More specifically, spraying is carried out for 5 minutes toward the upper portion, then sprayed for 5 minutes to the left, sprayed again for 5 minutes, and sprayed again for 10 minutes to the right (5 degrees rightward rotation in the upper chamber) for 5 minutes.

When the cleaning by the jetting is completed, the supply of water is stopped, the light 132 is turned on, and the camera 131 is operated to determine whether or not the dust is removed. At this time, if it is judged that the washing is not sufficient, the upper part, the left 5 ° and the right 5 ° are re-washed for 5 minutes each and the camera is operated again.

The impact plate 141 for preventing breakage of the jetting section 110 due to the destruction of the dust is provided at a position spaced apart from the camera 131 and the light 132 in the direction of the other end of the housing 111 And is installed on the housing 111.

When a large amount of dust collapses inside the dust bin 11, the impingement plate 141 contacts the sensing sensor 143 while descending, and when it is sensed, the supply of water is stopped, the rod 122 is moved backward, Thereby retracting the apparatus 100 out of the dust bin 11. [ The restoration means 113 moves the nozzle 112 back into the housing 111 at the same time as the supply of water is stopped so that the dust can be prevented from flowing back through the first jet opening 114a.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand.

It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention .

1: blast furnace 2: hot wind furnace
3: Bishop scrubber 10: Dust catcher
11: Dustbin 12: Cyclone
13: gas outlet 14: exhaust passage
15: Dust blocking side 16: Gas blocking side
17: Dust control cut-off side 100: Dust catcher cleaning device
110: jetting part 111: housing
112: nozzle 113:
114a: first jetting port 114b: second jetting port
115: nozzle case 116: groove
117: supply port 120:
121: Actuator 122: Rod
123: head 124: motor
125: rotation axis 131: camera
132: light 140:
141: collision plate 142: elastic spring
143: Detection sensor 150:
200: penetrating gas nozzle D: dust
W: Water

Claims

An apparatus for cleaning the inside of a dust catcher for separating and collecting dust contained in an exhaust gas,
A spraying part for spraying water into the dust catcher, the spraying part including a nozzle which advances by water pressure to expose the first jetting port when water is supplied therein; And
And a driving unit that is installed outside the dust catcher and connected to the jetting unit to cause the jetting unit to move forward and backward so as to be inserted into the dust catcher and to rotate the jetting unit to adjust the jetting direction of water,
The injection unit may further include a housing having one end opened and the other end closed to form a pipe and supplied with water, and a restoring unit for pulling the nozzle installed inside the housing toward the other end of the housing,
Wherein the nozzle has an outer diameter corresponding to an inner diameter of the housing and is formed into a pipe shape having one end opened and the other end closed, one end opened communicates with the hollow of the housing, and a first injection opening The dust catcher cleaning device comprising:

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The method according to claim 1,
The housing is provided with a supply port for supplying water to the hollow inside the housing,
Wherein the restoration means is a tension spring having one end fixed to the inner wall of the housing between the supply port and the nozzle and the other end fixed to one end of the nozzle.

The method of claim 3,
And a nozzle case coupled to one end of the housing to prevent the nozzle from separating from the housing,
Wherein the nozzle case is formed with a second jetting port at a position corresponding to the position of the first jetting port on the advancing nozzle.

The method of claim 4,
A camera and light installed in the nozzle case and looking in the same direction as the first jetting port, and a control unit for receiving the image taken by the camera and adjusting the jetting unit and the driving unit,
The camera captures the inside of the dust catcher and transmits the captured dust catcher to the control unit,
Characterized in that the controller analyzes the image to determine the degree of attachment of dust after cleaning to determine whether to perform additional cleaning and transmits a re-wash signal or a termination signal to the spray section and the drive section. .

The method of claim 3,
An elastic spring installed on the housing and moving when the dust falls, an elastic spring connecting the collision plate and the housing to apply restoring force when the collision plate is moved, Further comprising a sensing portion including a sensing sensor for sensing the position of the dust catcher.

The method of claim 6,
The impingement plate is installed on a side surface of the housing so as to face the direction of the first jetting port and is formed so as to have a high center and a lower edge,
Wherein the sensing sensor is operative in contact with the impingement plate.

The method according to claim 6 or 7,
Further comprising a control unit for receiving the signal when the sensing sensor is operated to shut off water supplied through the supply port and to transmit a retraction signal to the driving unit to release the jetting unit to the outside of the dust catcher, Device.

The method according to claim 1,
The housing is provided with a groove in a circumferential direction on an outer circumferential surface thereof,
The driving unit includes an actuator for generating a driving force, a rod that is reciprocated by receiving a driving force from the actuator, and a head connected to the rod and coupled to the groove,
And when the rod is moved back and forth, the jetting portion is moved back and forth in the same direction as the rod.

The method of claim 9,
The driving unit may further include a rotation shaft coupled to the other end of the housing and a motor for rotating the rotation shaft,
Wherein the motor is engaged with the rod so that when the rod is moved back and forth, the motor moves back and forth in the same direction.

A dust catcher for separating and collecting dust contained in an exhaust gas,
A dust bin for loading dust falling down from the gas;
A discharge passage for discharging dust from the dust bin; And
The dust is inserted into the lower side of the dust bin to be forward and backward and rotatable. When water is supplied into the dust bin, the nozzle advances by water pressure and the jet port is exposed to separate the dust adhered to the discharge path and the dust bin And a dust catcher cleaning device for spraying the water,
The dust catcher cleaning device includes a housing having a first end opened and a second end closed and supplied with water, and a restoring means for pulling the nozzle installed in the housing toward the other end of the housing ,
Wherein the nozzle has an outer diameter corresponding to an inner diameter of the housing and is formed into a pipe shape having one end opened and the other end closed, one end opened communicating with the hollow of the housing and the injection opening formed on the other end side And a dust catcher.

The method of claim 11,
And a penetrating gas nozzle formed on a lower side of the dust bin and formed on an upper portion of the dust catcher cleaning device for spraying a high pressure gas into the dust bin to push out the dust,
Wherein the dust catcher cleaning device is inserted into the dust-free space formed by injecting the high-pressure gas at the penetrating gas injection port by inserting the dust catcher in a predetermined angle upward direction from the outside to the inside of the dust bin.