KR20220089434A - F,I,C,A,M : Furnacr Inside Cleaning Automatic Machine - Google Patents

Abstract

An apparatus for removing deposits on the inner wall of a furnace is provided. The apparatus for removing deposits on the inner wall of a furnace according to the present invention includes a base supported by a support on the outer wall of the furnace, an attachment crusher for crushing deposits attached to the inner wall of the furnace, and a base and an attachment crusher coupled between the base and the attachment crushing unit and crushing the deposits and a drawing device for drawing and supporting the portion inside the furnace.

Description

Development of Goronoche BFIFCM device {F,I,C,A,M: Furnacr Inside Cleaning Automatic Machine}

The present invention relates to the development of a Goronoche FM (BFIFCM) device.

In the following, the development of the Goronoche BFIFCM device may refer to a device for removing attachments on the inner wall of the furnace.

In general, blast furnaces usually produce molten iron for a lifetime, but when more than 10 years have elapsed, the refractory material protecting the furnace body is worn and the furnace body is subjected to a heat load due to the high heat inside the furnace, and cracks in the furnace body shell constituting the furnace frame occur and Problems such as buckling occur.

For this reason, in order to prevent the high heat inside the furnace from being transmitted to the furnace shell, irregularly shaped castables (refractories) with strong wear resistance and heat insulation are periodically constructed with a set thickness using a construction device.

In order to construct an irregular castable, first empty all the charges inside the furnace and remove the attachments inside the furnace.

In order to remove the deposits inside the furnace, a mist mixed with high-pressure air and water is used to remove the deposits on the inner wall of the furnace.

However, the deposits attached to the inner wall of the furnace during operation are fixed with a mixture of zinc and alkali components for a long time, and are not easily removed from the inner wall and remain on the inner wall of the furnace.

In this way, if the irregular refractory material is installed while the attachment remains on the inner wall of the furnace, the adhesion is greatly reduced, and a gap is created between the refractory material and the attached material, which is a different material, and the irregular refractory material is easily removed from the inner wall of the furnace due to gas penetration during operation. As a result, the internal heat of the furnace was transferred to the furnace shell to receive a heat load, and there was a problem that led to a reduction in production.

Conventionally, in order to remove the deposits on the inner wall of the furnace, carbon dioxide (CO ₂ ) blasting in the furnace and a weight having a weight greater than or equal to a set size were used to remove the deposits by striking the inner wall of the furnace, but only a part of the deposits could be removed.

The present invention aims to provide a development of a blast furnace BFIFCM device that allows the attachments attached to the inner wall of the furnace to be automatically and easily removed so that the refractory material is installed in close contact with the inner wall of the furnace and is not easily removed from the inner wall of the furnace. .

The apparatus for removing attachments on the inner wall of a furnace according to an embodiment of the present invention includes a base supported by a support on the outer wall of the furnace, and an attachment crusher for crushing attachments that are drawn into the inside of the furnace and attached to the inner wall of the furnace can

In addition, the apparatus for removing deposits on the inner wall of the furnace may include a pull-in device coupled between the base and the deposit crushing unit and for drawing and supporting the deposit crushing unit into the interior of the furnace.

The attachment crusher may include a lifting support frame that is connected in a suspended state to the pull-in device and is lifted by the pull-in device, and an attachment removal boom installed at the lower portion of the lifting support frame and capable of unfolding and folding to a set size.

In addition, the attachment crusher may include a hammer drill installed on the head of the attachment removal boom and for crushing the attachment by hitting the attachment attached to the inner wall of the furnace.

The attachment removal boom may include at least two or more unit joint members, and a joint cylinder coupled between the unit joint member and the unit joint member to expand or fold the unit joint member.

A spray nozzle for spraying pressure water may be installed on the outer peripheral surface of the head of the attachment removal boom.

A swing table for rotating the attachment removal boom may be coupled to the upper end of the attachment removal boom.

In the upper portion of the lifting support frame, a plurality of internal supports for preventing the shaking of the attachment crusher when the attachment is crushed by the attachment crusher may be coupled at a set interval.

The inner support may be provided with an angle adjusting cylinder for adjusting the support angle of the inner support with respect to the inner wall of the furnace.

The retracting device includes a multi-joint boom coupled to the upper end of the base, a multi-stage slide boom that is coupled to the upper end of the articulated boom and can be extended or contracted by a set length, and connects the head of the multi-stage slide boom and the elevating support frame and crushes attachments It may include a main wire for supporting the portion in the interior of the furnace.

A main winch for unwinding or winding the main wire may be installed in the multi-stage slide boom.

The pull-in device may include a sub wire for connecting the head portion of the multi-stage slide boom and the elevating support frame, and for adjusting the horizontal state of the attachment crushing unit.

A sub winch for releasing or winding a sub wire may be installed in the multi-stage slide boom.

A wire guide for guiding the unwinding and winding of the main wire and the sub wire may be installed on the head of the multi-stage slide boom.

According to the embodiment of the present invention, the refractory material is constructed in close contact with the inner wall of the furnace so that the attachments attached to the inner wall of the furnace can be automatically and easily removed, so that it cannot be easily removed from the inner wall of the furnace.

In addition, by cleaning the deposits adhering to the inner wall of the blast furnace and constructing irregular refractories, it is possible to improve the adhesion of the refractory materials to prevent thermal load on the blast furnace shell at the end of the blast furnace and to prolong the furnace wall repair cycle, thereby contributing to productivity improvement.

1 is a schematic configuration diagram illustrating an application state of an apparatus for removing attachments on an inner wall of a furnace according to an embodiment of the present invention.
2 is a schematic top perspective view illustrating an unfolded state of the inner support of the apparatus for removing attachments on the inner wall of the furnace according to an embodiment of the present invention, in which some configurations of the upper portion of the inner support are omitted.
3 is a schematic configuration diagram illustrating an unfolded state of the attachment removal boom of the apparatus for removing attachments on the inner wall of a furnace according to an embodiment of the present invention.
4 is a partial detailed view of the attachment crushing unit of the apparatus for removing attachments on the inner wall of the furnace according to an embodiment of the present invention.
5 is a schematic partial perspective view of a drawing device of an apparatus for removing attachments on an inner wall of a furnace according to an embodiment of the present invention.
6 is a partial perspective view of an attachment crushing unit of an apparatus for removing attachments on an inner wall of a furnace according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described so that those of ordinary skill in the art can easily carry out the present invention. As can be easily understood by those of ordinary skill in the art to which the present invention pertains, the embodiments described below may be modified in various forms without departing from the concept and scope of the present invention. Wherever possible, identical or similar parts are denoted by the same reference numerals in the drawings.

The terminology used below is for the purpose of referring to specific embodiments only, and is not intended to limit the present invention. As used herein, the singular forms also include the plural forms unless the phrases clearly indicate the opposite. The meaning of "comprising," as used herein, specifies a particular characteristic, region, integer, step, operation, element and/or component, and other specific characteristic, region, integer, step, operation, element, component, and/or group. It does not exclude the existence or addition of

All terms including technical terms and scientific terms used below have the same meaning as those commonly understood by those of ordinary skill in the art to which the present invention belongs. Terms defined in the dictionary are additionally interpreted as having a meaning consistent with the related art literature and the presently disclosed content, and unless defined, are not interpreted in an ideal or very formal meaning.

1 is a schematic configuration diagram showing an application state of the apparatus for removing attachments on the inner wall of a furnace according to an embodiment of the present invention, and FIG. 2 is an internal support of the apparatus for removing attachments on the inner wall of a furnace according to an embodiment of the present invention It is a schematic top perspective view showing an unfolded state.

3 is a schematic configuration diagram illustrating an unfolded state of the attachment removal boom of the apparatus for removing attachments to the inner wall of the furnace according to an embodiment of the present invention, and FIG. 4 is an apparatus for removing attachments to the inner wall of the furnace according to an embodiment of the present invention. It is a partial detail view of the attachment crushing part of

5 is a schematic partial perspective view of a device for removing attachments on the inner wall of a furnace according to an embodiment of the present invention, and FIG. to be.

1 to 6 , the apparatus for removing attachments on the inner wall of a furnace according to an embodiment of the present invention includes a base 100 supported by a support 20 on an outer wall of the furnace 10, the furnace 10 It may include an attachment shredding unit 200 for crushing the deposit attached to the inner wall of the furnace 10 is introduced into the furnace (10).

In addition, the apparatus for removing attachments on the inner wall of the furnace is coupled between the base 100 and the attachment crushing unit 200, and pulling the attachment crushing unit 200 into the inside of the furnace 10 to support it. may include

The attachment crusher 200 is connected to and supported in a suspended state from the pull-in device 300 , and is installed in the lower part of the lifting support frame 210 for being lifted by the pull-in device 300 , and the lifting support frame 210 . and may include an attachment removal boom 220 that can be unfolded and folded to a set size.

In addition, the attachment crusher 200 is installed in the head portion 221 of the attachment removal boom 220, and includes a hammer drill 230 for striking and crushing attachments attached to the inner wall of the furnace 10. can

The attachment removal boom 220 includes at least two or more unit joint members 221 , a unit joint member 221 and a unit joint member 221 so as to be positioned close to the location of the attachment attached to the inner wall of the furnace 10 . It is coupled therebetween and may include a joint cylinder 223 for expanding or folding the unit joint member 221 .

The hammer drill 230 is a hydraulic device (not shown) for driving the hammer drill 220 so as to strike the inner wall of the furnace 10 with a force of a set size while moving forward and backward along the inner and outer directions of the furnace 10 city) can be connected.

In addition, on the outer peripheral surface of the head part 221 of the attachment removal boom 220 , a spray nozzle 240 for spraying high pressure water higher than a set pressure to the inner wall of the furnace 10 may be installed.

A swing table 250 for rotating the attachment removal boom 220 may be rotatably coupled to the upper end of the attachment removal boom 220 .

A driving motor 251 for rotationally driving the swing table 250 may be coupled to the swing table 250 .

A camera 260 for photographing the crushing state of the attachment crushing unit 200 attached to the inner wall of the furnace 10 and the movement state of the attachment crushing unit 200 in the attachment removal boom 220 may be installed. .

The camera 260 is connected to a monitor (not shown) installed on the outside of the furnace 10 to transmit the shooting state of the camera 260 to the monitor, and the operator can check the internal state of the furnace through the monitor, and a control unit (not shown) time), the attachment crusher 200 and the pull-in device 300 can be adjusted.

A plurality of attachments are coupled to the upper portion of the lifting support frame 210 at set intervals, and when the attachments on the inner wall of the furnace 10 are crushed by the hammer drill 230 of the attachment crushing unit 200, the shaking of the attachment crushing unit 200 is prevented. It may include an internal support 400 for this.

The inner support 400 may be formed of a multi-stage slide boom that can be extended or contracted by a set length so as to be in close contact with the inner wall of the furnace 10 and effectively prevent the shaking of the attachment crushing unit 200 .

In addition, a contact plate 410 for contacting the inner wall of the furnace 10 may be coupled to the end of the inner support 400 .

The inner support 400 has an angle adjustment cylinder 420 for adjusting the support angle of the plurality of inner supports 400 with respect to the inner wall of the furnace 10 so as to spread the plurality of inner supports 400 in both directions at a set angle. ) can be installed.

The pull-in device 300 may include a multi-joint boom 310 , a multi-stage slide boom 320 , a main wire 330 , and a sub wire 350 .

The articulated boom 310 is coupled to the upper end of the base 100, and the angle of entry of the attachment crusher 200 can be adjusted so that the attachment crusher 200 can easily enter the interior of the furnace 10. .

In addition, the multi-stage slide boom 320 is coupled to the upper end of the articulated boom 310, and the attachment crusher 200 can be extended or contracted by a set length so that it can easily enter the interior of the furnace 10. .

The main wire 330 connects the head portion of the multi-stage slide boom 320 and the lifting support frame 210 of the attachment crushing unit 200, and the attachment crushing unit 200 is suspended from the inside of the furnace 10. can support

Between the base 100 and the articulated boom 310 , a rotary table 311 for adjusting the rotation angle of the articulated boom 310 with respect to the base 100 may be coupled.

1 and 5, the multi-joint boom 310 is illustrated with three joints, but is not limited thereto, and may be configured with three or more joints or less as necessary.

In addition, although the multi-stage slide boom 320 is illustrated as a three-stage slide in FIGS. 1 and 5 , the present invention is not limited thereto, and may be configured as more than or less than three-stage slide as necessary.

Here, the head portion of the multi-stage slide boom 320 may refer to a left end located above the attachment crushing unit 200 located inside the furnace 10 in FIG. 1 .

In addition, the pull-in device 300 is installed on the multi-stage slide boom 320 and may include a main winch 340 for unwinding or winding the main wire 330 by a set length.

The pull-in device connects the head portion of the multi-stage slide boom 320 and the elevating support frame 210 of the attachment crushing unit 200, and a sub wire 350 for adjusting the horizontal state of the attachment crushing unit 200. may include

The pull-in device is installed on the multi-stage slide boom 320 and may include a sub winch 360 for unwinding or winding the sub wire 350 by a set length.

Insertion holes 371 for inserting and coupling the main wire 330 and the sub wire 350 are provided at a set interval in the lower portion of the head of the multi-stage slide boom 320, and the main wire 330 and the sub wire 350 are provided. A wire guide 370 for guiding the unwinding and winding may be installed.

As shown in FIG. 6 , the wire guide 370 has a shape such as a butterfly wing for easy guide of the main wire 330 and the sub wire 350 , and an insertion hole 371 is provided at the four corners thereof. can be provided.

An angle bracket 380 for adjusting the rotation angle of the wire guide 370 with respect to the head of the multi-stage slide boom 320 may be coupled between the wire guide 370 and the multi-stage slide boom 320 .

Hereinafter, with reference to FIGS. 1 to 6, the operation of the apparatus for removing the inner wall of the furnace according to an embodiment of the present invention will be described.

The attachment crushing part 200 is drawn into the inside of the furnace 10 by using the pulling-in device 300 .

That is, after the attachment crushing unit 200 is connected to the main wire 330 and the sub wire 350 , the attachment crushing unit 200 is inserted into the furnace 10 .

At this time, the angle of the multi-joint boom 310 with respect to the base 100 is adjusted using the rotary table 311, and the multi-stage slide boom 320 is extended by a set length so that the head of the attachment crusher 200 is a furnace. It should be located in the center of (10).

Then, by unwinding the main wire 330 by a set length from the main winch 340, the attachment crusher 200 is positioned at a set height from the bottom surface of the furnace 10 in the inner central portion of the furnace 10.

In addition, by adjusting the length of the sub wire 350 at the sub position 360, the lifting support frame 210 of the attachment crusher 200 is horizontal with respect to the bottom surface of the furnace 10 as shown in FIG. to achieve the status.

At this time, the winding and unwinding of the main wire 330 and the sub wire 350 are guided by the wire guide 371 .

And, as shown in FIG. 2 , the inner support 400 is spread by a set length to bring the contact plate 410 into contact with the inner wall of the furnace 10 , and the inner support 400 is supported on the inner wall of the furnace 10 . make it possible

In addition, by using the angle adjustment cylinder 420, the inner support 400 is spread in both directions at a set angle to adjust the support angle of the inner support 400 for the furnace 10 inner wall.

In this way, in a state in which the inner support 400 is supported on the inner wall of the furnace 10, the joint cylinder 223 of the attachment removal boom 220 is newly operated to move the unit joint member 221 as shown in FIG. unfold together.

Then, the drive motor 251 is driven to rotate the swing table 250 at a set angle so that the head portion 221 of the attachment removal boom 220 is positioned close to the attachment attached to the inner wall of the furnace 10 . .

In this state, when a hydraulic device (not shown) is driven to operate the hammer drill 230 , the hammer drill 230 moves forward and backward along the inner and outer directions of the furnace 10 , on the inner wall of the furnace 10 . The attached attachment may be removed from the inner wall of the furnace 10 by crushing the attached attachment by hitting a force of a set size.

In addition, high-pressure water above a set pressure is sprayed on the attachment attached to the inner wall of the furnace 10 through the injection nozzle 240 installed in the head part 221 of the attachment removal boom 220, and the attachment is applied to the furnace 10 It can be easily detached from the inner wall.

The hammer drill 230 and the spray nozzle 240 can be selectively used or used simultaneously to remove the attachments attached to the inner wall of the furnace 10 by dropping them from the inner wall of the furnace 10 .

When the attachments attached to the inner wall of the furnace 10 are crushed using the header drill 230 and the spray nozzle 240 of the attachment removal boom 220 , shaking can be prevented by the internal support 400 .

At this time, the operator may check the image captured by the camera 260 on the monitor outside the furnace 10 to fine-tune each component of the attachment crusher 200 and the pull-in device 300 .

Although the present disclosure has been described through preferred embodiments as described above, the present invention is not limited thereto, and various modifications and variations are possible without departing from the scope of the claims set forth below. Those in the field will understand easily.

10: furnace
100: base
200: attachment crushing unit
220: attachment removal boom
230: hammer drill
240: spray nozzle
300: inlet device
400: inner support

Claims (12)

a base supported by supports on the outer wall of the furnace;
an attachment crushing unit introduced into the furnace to crush attachments attached to the inner wall of the furnace; and
A pull-in device coupled between the base and the attachment crushing part and supporting the attachment crushing part by drawing the attachment crushing part into the inside of the furnace
Development of a Goronoche FM (BFIFCM) device comprising a. According to claim 1,
The attachment crushing unit,
A lifting support frame connected to the pull-in device in a suspended state and for being lifted by the pull-in device;
An attachment removal boom that is installed in the lower portion of the lifting support frame and can be expanded and folded to a set size, and
Development of a BFIFCM device installed on the head of the attachment removal boom and including a hammer drill for striking and crushing attachments attached to the inner wall of the furnace. 3. The method of claim 2,
The attachment removal boom includes at least two or more unit joint members, and a joint cylinder coupled between the unit joint member and the unit joint member to expand or fold the unit joint member. device development. 3. The method of claim 2,
Development of a blast furnace BFIFCM device in which a spray nozzle for spraying pressure water is installed on the outer peripheral surface of the head of the attachment removal boom. 3. The method of claim 2,
Development of a Goronoche FIFCM (BFIFCM) device in which a swing table for rotating the attachment removal boom is coupled to the upper end of the attachment removal boom. 6. The method according to any one of claims 2 to 5,
In the upper part of the elevating support frame, a plurality of internal supports for preventing the shaking of the attachment crusher when the attachment is crushed by the attachment crusher are coupled at a set interval. Development of a BFIFCM device. 7. The method of claim 6,
Development of a Goronoche FIFCM (BFIFCM) device in which an angle adjusting cylinder for adjusting the support angle of the inner support with respect to the inner wall of the furnace is installed in the inner support. 7. The method of claim 6,
The inlet device is
A multi-joint boom coupled to the upper end of the base;
A multi-stage slide boom coupled to the upper end of the articulated boom and capable of extending or contracting by a set length, and
Development of a BFIFCM device connecting the head portion of the multi-stage slide boom and the elevating support frame, and including a main wire for supporting the crushing attachment part inside the furnace. 9. The method of claim 8,
Development of a BFIFCM device in which a main winch for unwinding or winding the main wire is installed on the multi-stage slide boom. 10. The method of claim 9,
The inlet device connects the head portion of the multi-stage slide boom and the elevating support frame, and includes a sub wire for adjusting the horizontal state of the attachment crushing unit. Development of a BFIFCM device. 11. The method of claim 10,
Development of a BFIFCM device in which a sub winch for unwinding or winding the sub wire is installed on the multi-stage slide boom. 12. The method of claim 11,
Development of a BFIFCM device in which a wire guide for guiding the unwinding and winding of the main wire and the sub wire is installed in the head of the multi-stage slide boom.

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