KR102376288B1 - Removing apparatus of accretion - Google Patents

Abstract

The present invention relates to an attachment removal apparatus, which is an apparatus for removing attachment formed on a target, and comprises: a crusher; a support member installed to be apart from the target; a movement member connected with the support member to be horizontally movable; and a balance member for connecting the crusher with the movement member to be vertically movable. The attachment removal apparatus easily removes the attachment formed on the target and reduces workload of a worker.

Description

Removing apparatus of accretion

The present invention relates to an attachment removal apparatus, and more particularly, to an attachment removal apparatus capable of easily removing an attachment formed on an object and reducing the work load of an operator.

In general, in the converter operation, molten iron (hot metal) and scrap, which are the main raw materials, are charged into the converter, and gas containing oxygen is blown into the converter, and at the same time, auxiliary materials are added to the impurity elements carbon (C) and silicon among the molten iron. (Si), manganese (Mn), phosphorus (P), sulfur (S), titanium (Ti), etc. are collectively referred to as a series of operations to remove as slag.

On the other hand, since a large amount of exhaust gas is generated in the converter operation, and molten iron or slag is scattered by the partial pressure of the gas injected into the molten iron, a hood and an exhaust duct for sucking and discharging the exhaust gas are installed above the converter. Accordingly, in order to blow gas into the converter, a lance dome passing through the exhaust duct is installed in the exhaust duct, and the gas is blown into the converter by inserting the lance into the lance dome. However, most of the exhaust gas generated from the converter is discharged through the exhaust duct, but the scattered slag or molten iron is attached to the hood, exhaust duct, and lance dome to form now. The now formed in this way becomes larger as time passes and can fall and damage surrounding equipment. In particular, the now formed in the lance dome makes it impossible to elevate and lower the lance, thereby causing an operation accident.

Accordingly, the metal formed on the lance dome is periodically removed, and the worker is directly removing the metal using a shredder at the workbench provided around the lance dome. However, since the crusher is very heavy, there is a problem of increasing the work load on the worker. In addition, if the operator loses the center of gravity by the load of the crusher in the process of changing the working position, it may fall into the lance dome, there is a risk of a safety accident.

JP 2518369 Y US 10-2135795 B

The present invention provides an adhesion removal device capable of efficiently removing an adhesion formed on an object.

The present invention provides a device for removing attachments that can reduce the work load of an operator and suppress the occurrence of a safety accident.

An apparatus for removing deposits according to an embodiment of the present invention is an apparatus for removing deposits formed on an object, comprising: a crusher; a support member installed to be spaced apart from the object; a moving member connected to the support member so as to be movable in the horizontal direction; and a balance member for connecting the crusher to the movable member so as to be movable in the vertical direction.

The object extends in a vertical direction and is formed in a hollow shape with an open upper portion, and the support member includes: a first support frame extending in the vertical direction and disposed to be spaced apart from the object; and a second support frame connected to an upper portion of the first support frame so as to extend in a direction crossing the extending direction of the first support frame.

The first support frame may be formed to be adjustable in height to move the second support frame in a vertical direction.

The first support frame may be rotatably formed to move the second support frame to an upper portion of the object or to be spaced apart from the object.

The second support frame may be formed to cross an upper portion of the object, or a portion may be formed from an upper portion of the object along a circumferential direction of the object.

The second support frame may include a guide groove for connecting the movable member, and the guide groove may be formed to extend in a direction in which the second support frame extends.

The moving member may include at least one of a roller and a bearing.

The support member may further include a moving vehicle installed under the first support frame.

The balance member may move the crusher in a vertical direction according to an external force applied to the crusher.

The balance member may include: an elastic body whose tension is adjusted to balance the weight of the crusher; and a wire capable of being wound and unwinding and connected to the elastic body.

The balance member may include a spring balance.

The object includes a lance dome of a converter facility, the attachment includes a tip attached to the lance dome, and the crusher is inserted into the lance dome to include an air breaker or an air hammer capable of striking the metal can

According to the embodiment of the present invention, it is possible to efficiently remove the deposit formed on the object. That is, it is possible to easily remove the attachment formed on the object by supporting the crusher, which is a heavy object, to be movable in the vertical direction by an external force. Accordingly, the operation can be stably performed by reducing the time required to separate or remove the attachment formed on the object. In addition, it is possible to reduce the work load of the worker, and to suppress or prevent safety accidents such as the worker falling in the process of handling the crusher, which is a heavy object.

In addition, by installing the crusher to be movable in the horizontal direction on the upper part of the object, it is possible to efficiently remove the attachments formed on the object of various sizes.

1 is a view showing a state in which the attachment removal device according to an embodiment of the present invention is installed in a converter facility.
Figure 2 is a perspective view showing an attachment removal device according to an embodiment of the present invention.
Figure 3 is a view showing a use state of the attachment removal device.
4 is a view showing a modified example of the support member.
5 to 7 are views sequentially showing a method for removing an adherent according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and the scope of the invention to those of ordinary skill in the art completely It is provided to inform you.

The adhesion removal apparatus according to an embodiment of the present invention may remove adhesions formed on an object. Here, the object may be formed in a hollow shape having a space therein, and may be formed such that at least an upper portion thereof is open. The attachment removing apparatus may remove attachments formed inside the object through an upper open portion from the outside of the object. Hereinafter, an example in which the object is the lance dome of the converter facility and the attachment is now will be described. The lance dome refers to a pipe-shaped structure formed in an exhaust duct to insert a lance, and now refers to a solidified product or lump formed by scattering or splashing molten iron, slag, etc., and attaching to an object.

1 is a view showing a state in which the attachment removal device according to an embodiment of the present invention is installed in a converter facility.

Referring to FIG. 1 , an apparatus for removing deposits 300 according to an embodiment of the present invention may be installed in a converter facility to remove the deposits formed on the converter facility. The converter equipment may include a converter 110 having an open upper portion and a space in which a melt is accommodated therein, and a lance 130 for blowing an oxygen-containing gas into the melt through the upper portion of the converter 110 . And on the upper part of the converter 110, the partial pressure of the gas sprayed from the lance 130 prevents scattering of melt or slag, sucks the exhaust gas generated inside the converter 110 and discharges it, and the dust contained in the exhaust gas, etc. An exhaust gas treatment device 200 for processing may be installed.

The converter 110 has a space in which the molten material, for example, molten iron is accommodated therein, and a furnace 112 capable of charging the molten iron may be formed in the upper part. And a tap hole 114 for tapping molten steel manufactured by refining molten iron is formed on one upper side of the converter 110, and a stirring gas for stirring the molten iron is provided at the bottom of the converter 110, for example, an inert gas and oxygen. A low odor nozzle (not shown) that can be blown may be formed.

The exhaust gas treatment device 200 is installed such that the hood 212 installed on the upper portion of the converter 110 to collect the exhaust gas generated from the converter 110 and the exhaust gas collected in the hood 212 communicate with the hood 212 . It may include an exhaust duct 210 to be used, a dust collector (not shown) for removing impurities such as dust contained in the exhaust gas. Although not shown in the drawings, a skirt (not shown) movable in the vertical direction may be formed at the lower portion of the hood 212 to open or close the furnace 112 .

The lance 130 may be installed on the upper part of the converter 110 to be movable in the vertical direction. In this case, a lance dome 214 for inserting the lance 130 may be formed in the exhaust duct 210 . When the lance 130 is inserted, the lance dome 214 passes through the exhaust duct 120 so that the lance 130 can be disposed in the center of the converter 110 and may be formed to extend in the vertical direction. That is, the lance dome 214 may be formed in a hollow top and bottom open.

When an oxygen-containing gas is blown into the molten iron using such a converter facility, that is, the molten iron is blown, an oxygen-containing gas is blown into the molten iron accommodated in the converter 110 through the lance 130 of the molten iron, that is, the carbon contained in the molten iron by blowing It is possible to remove impurities such as

On the other hand, during the converter operation, molten iron or slag is scattered and is attached to the converter 110, as well as the lance 130, the hood 212, the exhaust duct 210, and the lance dome 214 to form a current. Among them, when the now attached to the lance dome 214 collides with the lance 130 or the now attached to the lance 130 when the lance 130 moves in the vertical direction, the lance 130 as well as the exhaust duct ( 210) It must be removed from time to time because it can give an impact to the whole.

The attachment removal apparatus according to an embodiment of the present invention may be disposed on the workbench 10 installed around the converter facility, for example, the lance dome 214 , and may remove the metal attached to the lance dome 214 . Here, the work table 10 may include a deck provided so that a worker can work safely at a high place. The workbench 10 may be formed to surround at least the lance dome 214 on the upper portion of the exhaust duct 210 .

FIG. 2 is a view showing an apparatus for removing deposits according to an embodiment of the present invention, and FIG. 3 is a view showing a state of use of the apparatus for removing deposits.

2 and 3 , the attachment removal device 300 according to an embodiment of the present invention includes a crusher 340 and a support member 310 installed to be spaced apart from the lance dome 214, and in the horizontal direction. A balance member ( 330) may be included.

The shredder 340 may include a shredder body 342 including an actuator (not shown) that provides power, and a tool 346 coupled to the shredder body 342 for striking an attachment. In this case, a lever 344 may be formed on the crusher body 342 to be handled by an operator, and the tool 346 may be connected to the crusher body 342 to be replaceable. The actuator provides power to linearly move the tool 346 , and the tool 346 may perform a linear motion through the power provided by the actuator. The tool 346 is formed in a bar shape extending in one direction, reciprocates in the direction in which the tool 346 is extended through power provided from the actuator, and can strike the attachment, that is, the now. The tool 346 may be formed to have various lengths and shapes, and a tool 346 having an appropriate length or shape depending on the location where the attachment is formed may be connected to the crusher body 342 . In addition, a first fastening ring 348 for connection with the balance member 330 may be formed in the crusher body 342 . The crusher 340 may be formed in various other forms, and the actuator provided in the crusher body 342 may operate in various ways, such as pneumatic or hydraulic pressure. The crusher 340 may include an air breaker, an air hammer, and the like, and since the crusher 340 is a known technology, a detailed description thereof will be omitted.

The support member 310 may be installed to the outside of the lance dome 214 and spaced apart from the lance dome 214 to support the crusher 340 in the process of removing the metal formed on the lance dome 214 . For example, the support member 210 may be installed on the work bench 10 to be spaced apart from the lance dome 214 , to move the crusher 340 to the upper portion of the lance dome 214 , or to be spaced apart from the lance dome 214 .

The support member 310 is disposed on the upper portion of the first support frame 312 so as to be disposed in a direction crossing the first support frame 312 and the direction in which the first support frame 312 extends in the vertical direction. It may include a connected second support frame 314 . In this case, the first support frame 312 may be fixedly installed on the workbench 10 , or may be mounted on a separate moving vehicle 316 to be movable.

The first support frame 312 may be rotatably formed to move the second support frame 314 to the upper portion of the lance dome 214 or to be spaced apart from the lance dome 214 . For example, during the converter operation, the crusher 340 is It is spaced apart from the lance dome 214 , and the crusher 340 must be moved to the upper part of the lance dome 214 in order to remove the now formed on the lance dome 214 . Accordingly, by forming the first support frame 312 to be rotatable, the second support frame 314 to which the crusher 340 is connected can be separated from the lance dome 214 or moved to the upper part of the lance dome 214 . . In addition, the first support frame 312 may be formed to be adjustable in length in the vertical direction so that the height of the second support frame 314 can be adjusted. As described above, when the second support frame 314 is moved while the crusher 340 is connected to the second support frame 314 , the crusher 340 may collide with the lance dome 214 . Accordingly, by forming the length of the first support frame 312 to be adjustable, it is possible to prevent the crusher 340 from colliding with the lance dome 214 . In addition, the first support frame 312 lowers the crusher 340 to the working position so that the operator can handle it after moving the crusher 340 to the upper part of the lance dome 214, and now after the removal operation is finished The crusher 340 may be raised to be spaced apart from the lance dome 214 . At this time, when the crusher 340 is lowered, a part of the crusher 340 can be inserted into the lance dome 214, and when the crusher 340 is raised, the crusher 340 is the entire lance dome 214. can be completely withdrawn from

The second support frame 314 may be connected to the upper portion of the first support frame 312 to support the crusher 340 . The second support frame 314 may be formed to cross the direction crossing the extending direction of the first support frame 312 , for example, the upper part of the lance dome 214 . In this case, the second support frame 314 may be formed in a bar shape having a length similar to the diameter of the lance dome 214 , or may be formed to be longer than the diameter of the lance dome 214 . This is to remove the metal while moving the crusher 340 from the top of the lance dome 214 in the horizontal direction, for example, in the radial direction of the lance dome 214 according to the position where the metal is formed.

The second support frame 314 may include a guide groove 315 for connecting the movable member 320 to be movable. The second support frame 314 may be formed to have a substantially quadrangular pole shape, and the guide grooves 315 are formed on both sides of the second support frame 314 so that the second support frame 314 is depressed toward the inside. can be The guide groove 315 may be formed in the form of a slit continuously extending along the direction in which the second support frame 314 extends. Here, it is described that the guide grooves 315 are formed on both sides of the second support frame 314 , but the guide grooves 315 are in the form of a slit formed to be concavely recessed into the lower surface of the second support frame 314 . may be formed as In addition, the guide groove 315 may be formed in various shapes that can connect the movable member 320 to be movable along the extending direction of the second support frame 314 .

4 is a view showing a modified example of the support member, the second support frame 314a may be formed to be disposed along the circumferential direction of the lance dome 214, which is an object. For example, at least a portion of the second support frame 314a may be formed in a ring shape surrounding the lance dome 214 . The second support frame 314a may have a guide groove 315 for connecting the movable member 320 to be movable. The guide groove 315 may be formed to be recessed in both sides or the inner and outer circumferential surfaces of the second support frame 314a. In this case, so that the operator can handle the crusher 340 without significantly changing the posture, the second support frame 314a may be formed to have a size similar to the diameter of the lance dome 214 . When the second support frame 314a is formed in a ring shape in this way, even when the object has a diameter or a size larger than the action radius of the operator, the attachment formed on the object can be more effectively removed. That is, since the attachment, for example, now is attached to the inner surface of the object, the operator can remove the metal more efficiently while moving the crusher 340, which is a heavy object, along the circumferential direction of the object. In addition, when the crusher 340 is disposed at the center of the object, the operator does not need to take the risk of falling into the object in order to hold the crusher 340, thereby promoting the safety of the operator and suppressing the occurrence of safety accidents. Or it can be prevented. In addition, there is no need to additionally adjust the position of the support member 310, for example, the first support frame 312 or the second support frame 314 to adjust the position of the crusher 340, making the removal operation more efficient now. can be carried out with

The movable member 320 may be movably connected to the second support frame 314 . The moving member 320 may be connected to the second support frame 314 so that a part thereof is inserted into the guide groove 315 formed in the second support frame 314 . The movable member 320 includes a movable body 322 inserted to be movable in each of the guide grooves 315 formed on both sides of the second support frame 314 and a movable body 322 inserted into the guide groove 315 . A support 324 for supporting and a first fastening ring 326 connected to the support 324 to connect the balance member 330 may be included. The moving member 320 is inserted into the guide groove 315 as shown in FIG. 3A to move in the direction in which the second support frame 314 extends, for example, in a horizontal direction. Since the movable body 322 moves while being inserted into the guide groove 315, it includes a rotating body such as rollers and bearings that can reduce frictional resistance with the second support frame 314 in the guide groove 315. can do. Here, although the moving member 320 is described as including a pair of rotatable movable bodies 322 such as rollers and bearings, and a support 324 for supporting the pair of movable bodies 322, the movable member 320 may be variously changed according to the shape of the guide groove 315 . For example, when one guide groove 315 is formed on the lower surface of the second support frame 314 , the movable member 320 includes a single movable body 322 inserted into the guide groove 315 and the movable body 322 . It may include a first fastening ring 326 connected to. In addition, the moving member 320 may include various types of structures that are inserted into the guide groove 315 to move the crusher 340 in the horizontal direction, for example, in a sliding manner. In addition, if the crusher 340 can be moved in the horizontal direction, the shape or connection method of the second support frame 314 and the moving member 320 may be variously changed.

The balance member 330 may be connected to the movable member 320 and support the crusher 340 to be movable in the vertical direction according to an external force applied to the crusher 340 . That is, the balance member 330 is disposed between the crusher 340 and the movable member 320 , and at the same time moves the crusher 340 along the second support frame 314 , it can be moved in the vertical direction. The crusher 340 is formed to have a weight of 20 kg or more, for example, about 50 kg. Since the operator directly lifts the crusher 340 and removes the metal formed on the lance dome 214, the work intensity is very high, and thus the operator feels fatigue. In addition, since the crusher 340 is heavy, if the operator loses his/her center of gravity in the process of removing the now formed on the lance dome 214 , there is a risk of a safety accident in which the operator falls into the lance dome 214 . Accordingly, by using the balance member 330 to support the crusher 340 on the second support frame 314, and by adjusting the height of the crusher 340 according to an external force, for example, a force applied by the operator, the work intensity of the operator is reduced. and can reduce the occurrence of safety accidents. The balance member 330 may support the crusher 340 so that it does not fall by the weight of the crusher 340 or perform irregular lifting motions. And the balance member 330 may support the crusher 340 , and when an external force is applied to the crusher 340 , the height of the crusher 340 may be adjusted according to the external force. The balance member 330 may include a body 332 including an elastic body (not shown), and a wire 334 connected to the elastic body and formed in the body 332 to be wound and unwinded. And the balance member 330 is a second fastening ring 336 formed on the body 332 to be fastened to the first fastening ring 326 and a wire for fastening to the first fastening ring 348 of the crusher 340 . It may include a second fastening ring 338 connected to (334). The balance member 330 may be formed to adjust the tension of the elastic body in order to balance the weight of the crusher 340 . Accordingly, in the attachment removal device, as shown in (b) of FIG. 3 , when an external force is applied to the crusher 340 and the balance between the elastic body and the crusher 340 is released, the wire 334 is unwound to the outside of the body 332 , and again When the equilibrium is restored, the height of the crusher 340 can be adjusted by winding the wire 334 into the body 332 . The balance member 330 may include a spring balance including a spring and a wire.

Through this configuration, while moving the crusher 340 in the horizontal and vertical directions, it is possible to efficiently remove the now formed in the lance dome 214 . In addition, by using the balance member 330 to support the crusher 340 at the working position, it is possible to reduce the work load of the worker and suppress the occurrence of a safety accident.

5 to 7 are views sequentially showing a method for removing an adherent according to an embodiment of the present invention.

When the converter operation is completed, the lance 130 is withdrawn from the lance dome 214 and the molten steel accommodated in the converter 110 is tapped. Thereafter, the metal formed on the lance dome 214 may be removed by using the attachment removal device installed on the workbench 10 . In this case, the attachment removal device may be in a state in which the crusher 340 is connected to the support member 310 . And the crusher 340 may be in a state arranged to be spaced apart from the lance dome 214 .

Referring to FIG. 5 , the first support frame 312 is raised to raise the second support frame 314 connected to the first support frame 312 , and the first support frame 312 is rotated to rotate the second support frame 312 . The support frame 314 may be moved to the upper part of the lance dome 214 . At this time, the second support frame 314 may be raised to such an extent that the crusher 340 connected to the second support frame 314 does not collide with the lance dome 214 . On the other hand, when the first support frame 312 is mounted on the moving vehicle 316 , the moving vehicle 316 is moved toward the lance dome 214 , and then the second supporting frame using the first supporting frame 312 . By raising and rotating the 314, it can be moved to the upper part of the lance dome 214. As such, when the second support frame 314 is moved to the upper portion of the lance dome 214 , the crusher 340 connected to the second support frame 314 may be disposed on the lance dome 214 .

Next, by observing the inside of the lance dome 214, it is possible to determine the position where it is now formed. And, according to the position where the metal is formed, as shown in FIG. 6 , the crusher 340 may be moved in the horizontal direction to be disposed at a position to remove the metal. At this time, the crusher 340 may be moved in the horizontal direction by the movement of the movable member 320 connected to the second support frame 314 . Thereafter, as shown in FIG. 7, by lowering the crusher 340, it is possible to remove the now. On the other hand, if the position where the metal is formed does not need to move the crusher 340 in the horizontal direction, the metal can be removed by lowering the crusher 340 as it is.

When the operator grabs the lever 344 formed in the crusher body 342 and pulls it down, the elastic body of the balance member 330 supporting the crusher 340 is tensioned, and the wire 334 connected to the elastic body is While unwinding, the crusher 340 may descend. When the metal formed on the lance dome 214 is removed in this way, since the crusher 340 is supported by the balance member 330, the operator removes the metal formed on the lance dome 214 without applying great force. can do. And even if the operator misses the lever 344 while removing the now, it is possible to prevent the crusher 340 from falling into the lance dome 214 .

The process of continuously grasping the position where the mold is formed while removing the mold, and moving the crusher 340 in the horizontal direction and in the vertical direction according to the position where the mold is formed can be performed one or more times.

When the now formed on the lance dome 214 is removed, the operator can release the lever 344 of the crusher 340 to raise the crusher 340 . At this time, as the external force applied to the crusher 340 by the operator is released, the elastic body of the balance member 330 is contracted, and the wire 334 connected to the elastic body is wound inside the body 332 of the balance member 330. The crusher 340 is raised.

Thereafter, by rotating the first support frame 312 , the second support frame 314 supporting the crusher 340 may be spaced apart from the lance dome 214 .

Although the technical spirit of the present invention has been specifically described according to the above embodiments, it should be noted that the above embodiments are for description and not limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical spirit of the present invention.

110: Jeonro 112: Nogu
114: exit 130: lance
200: exhaust gas treatment device 300: attachment removal device
310: support member 320: movable member
330: flat member 340: crusher

Claims (12)

An apparatus for removing an adherent formed on an object, comprising:
crusher;
a support member installed to be spaced apart from the object;
a moving member connected to the support member so as to be movable in the horizontal direction; and
a balance member for connecting the crusher to the movable member so as to be movable in the vertical direction;
The balance member is
an elastic body whose tension is adjusted to balance the weight of the crusher; and
Adhesive removal device comprising; a wire that can be wound and unwound, and connected to the elastic body. The method according to claim 1,
The object extends in the vertical direction and is formed in a hollow shape with an open top,
The support member is
a first support frame extending in the vertical direction and spaced apart from the object; and
and a second support frame connected to an upper portion of the first support frame so as to extend in a direction crossing the extending direction of the first support frame. 3. The method according to claim 2,
The first support frame is an attachment removal device that is formed to be adjustable in height so as to move the second support frame in the vertical direction. 3. The method according to claim 2,
The first support frame is rotatably formed to move the second support frame to an upper portion of the object or to be spaced apart from the object. 4. The method of claim 2 or 3,
The second support frame,
The attachment removal apparatus is formed to cross the upper portion of the object, or a portion is formed along the circumferential direction of the object from the upper portion of the object. 4. The method of claim 2 or 3,
The second support frame includes a guide groove for connecting the movable member,
The guide groove is formed to extend in a direction in which the second support frame extends. 7. The method of claim 6,
The moving member may include at least one of a roller and a bearing. 4. The method of claim 2 or 3,
The support member is
Attachment removal device further comprising a moving vehicle installed in the lower portion of the first support frame. 5. The method according to any one of claims 1 to 4,
The balance member is an attachment removal device capable of moving the crusher in the vertical direction according to the external force applied to the crusher. delete 5. The method according to any one of claims 1 to 4,
The balance member is an attachment removal device comprising a spring balance. The method according to claim 1,
The object includes a lance dome of a converter facility, and the attachment includes a tip attached to the lance dome,
The crusher is inserted into the dome of the lance, the attachment removal device including an air breaker or an air hammer capable of striking the metal.

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