Apparatus for removing refractory

Abstract

The present invention provides a refractory material removal device comprising: a deck unit disposed around a workpiece on which refractory material is installed; a removal unit installed movably on the deck unit and removing the refractory material while moving up and down toward the workpiece; and a rotational support unit disposed below the deck unit to fix and support the workpiece and rotate the workpiece in a circumferential direction.

Description

Technology Field

[0001] The present invention relates to a refractory material removal device. Background Technology

[0002] It should be noted that the content described in this section merely provides background information regarding the present invention and does not constitute prior art.

[0003] In a blast furnace, raw materials such as iron ore, limestone, and coke are charged, and hot air is supplied through a blower pipe (blower port) installed at the bottom of the blast furnace to burn the coke.

[0004] Referring to FIG. 1, conventionally, the removal of refractory material (S1') installed on a workpiece (S'), such as a blower pipe, was performed manually by a worker (M'). As a result, there were problems such as musculoskeletal disorders, respiratory diseases, and hearing loss in the worker (M') due to noise, dust, and vibration generated during the removal of refractory material (S1').

[0005] In addition, there was a problem where the removal of the refractory material (S1') installed in the blast pipe was performed manually by the worker (M'), which resulted in excessive work time. Prior art literature

[0006] (Patent Document 0001) KR 10-2004-0082124 A The problem to be solved

[0007] In one aspect, the present invention aims to provide a refractory removal device capable of improving the removal efficiency of a refractory removal operation by shortening the working time of the refractory removal operation.

[0008] In one aspect, the present invention aims to provide a refractory removal device capable of preventing the occurrence of musculoskeletal disorders, respiratory diseases, and hearing loss that may occur in workers during refractory removal operations.

[0009] The problems of the present invention are not limited to those described above. A person skilled in the art to which the present invention pertains will have no difficulty understanding additional problems of the present invention from the overall contents of this specification. means of solving the problem

[0010] As one aspect for achieving the above-mentioned purpose, the present invention provides a refractory material removal device comprising: a deck unit disposed around a workpiece on which refractory material is installed; a removal unit installed movably on the deck unit and removing the refractory material while moving up and down toward the workpiece; and a rotational support unit disposed below the deck unit to fix and support the workpiece and rotate the workpiece in a circumferential direction.

[0011] The refractory removal device of the present invention has the effect of improving the removal efficiency of the refractory removal operation by shortening the working time of the refractory removal operation.

[0012] The above removal unit removes the refractory material by raising and lowering it multiple times toward a removal origin at a specific location, and the above rotational support unit can sequentially position multiple removal points of the workpiece at the removal origin while rotating the workpiece in a circumferential direction.

[0013] The above deck unit may include: a deck body on which the removal unit moves; and a work hole formed through the deck body and forming a movement path for the removal unit to move to the work object.

[0014] The above removal unit may include a movable body installed to be movable on the deck body; and a removal member installed to be vertically movable to the work object through the work hole and removing the refractory material.

[0015] The above-described rotary support unit may include: a support body on which the workpiece is fixedly supported; a rotary rail installed on the lower side of the support body and guiding the rotation of the support body; and a rotary driving member disposed around the support body and rotating the support body.

[0016] It may further include a guide unit positioned on the upper side of the deck unit and guiding the movement of the removal unit.

[0017] A plurality of the above-mentioned rotary support units are installed, and a bogie unit installed to be movable on the lower side of the deck unit may be further included. Effects of the invention

[0018] According to one embodiment of the present invention, the removal efficiency of the refractory removal operation can be improved by shortening the working time of the refractory removal operation.

[0019] According to one embodiment of the present invention, there is an effect of preventing the occurrence of musculoskeletal disorders, respiratory diseases, and hearing loss that may occur in workers during refractory material removal work. Brief explanation of the drawing

[0020] Figure 1 is a drawing illustrating a conventional refractory removal process. FIG. 2 is a cross-sectional view of a refractory removal device according to one embodiment of the present invention. FIG. 3 is a cross-sectional view illustrating the process of removing refractory materials from multiple workpieces as the refractory removal device of FIG. 2 moves. FIG. 4a is a plan view showing the direction I-I' of FIG. 2. FIG. 4b is a plan view showing the direction II-II' of FIG. 2. FIG. 5 is a diagram illustrating the process of removing refractory material by rotating the workpiece in a circumferential direction and sequentially positioning a plurality of removal points of the workpiece at the removal origin point while the workpiece is rotated. FIG. 6 is a cross-sectional view of a refractory removal device according to another embodiment of the present invention. FIG. 7a is a plan view showing the III-III' direction of FIG. 6. FIG. 7b is a plan view showing the direction IV-IV' of FIG. 6. FIG. 8 is a cross-sectional view of a refractory removal device according to another embodiment of the present invention. Specific details for implementing the invention

[0021] Preferred embodiments of the present invention will be described below with reference to the attached drawings. However, embodiments of the present invention may be modified in various different forms, and the scope of the present invention is not limited to the embodiments described below. Furthermore, embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. In the drawings, the shapes and sizes of elements may be exaggerated for clearer explanation.

[0022] In describing the embodiments of the present invention, if it is determined that a detailed description of known technology related to the present invention may unnecessarily obscure the essence of the present invention, such detailed description will be omitted. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intentions or conventions of the user or operator. Therefore, such definitions should be based on the content throughout this specification. The terms used in the detailed description are merely for describing the embodiments of the present invention and should not be limited in any way. Unless explicitly stated otherwise, expressions in the singular form include the meaning of the plural form.

[0023] In this description, expressions such as “include” or “equipped” are intended to refer to certain characteristics, numbers, steps, actions, elements, parts or combinations thereof, and should not be interpreted to exclude the existence or possibility of one or more other characteristics, numbers, steps, actions, elements, parts or combinations thereof other than those described.

[0024] In this specification, terms such as 'top', 'upper', 'upper surface', 'lower', 'lower', 'lower surface', 'side', etc. are based on the drawings and may actually vary depending on the direction in which the elements or components are arranged.

[0025] Additionally, throughout the specification, when it is said that a part is 'connected' to another part, this includes not only cases where they are 'directly connected,' but also cases where they are 'indirectly connected' with other elements in between.

[0026] The present invention will be described in detail below through each embodiment or example of the invention. It should be noted that each embodiment or example described in this specification is not limited to a single embodiment or example, but may also be combined with other embodiments or examples. Accordingly, the citation of claims in the patent claims is merely an example of an embodiment, and the technical concept of the present invention should not be interpreted as being limited only to a combination with the cited claims; rather, combinations with various claims are also included within the scope of the technical concept of the present invention.

[0027] The present invention will be described in detail below through examples. However, it should be noted that the examples described below are intended merely to illustrate and embody the present invention and are not intended to limit the scope of the present invention. This is because the scope of the present invention is determined by the matters described in the patent claims and matters reasonably inferred therefrom.

[0028] Referring to the drawings, the refractory removal device of the present invention is illustrated in the front-rear direction, left-right direction, and up-down direction, and the terms front-rear direction, left-right direction, and up-down direction have also been used in the detailed description of the invention. However, this is for convenience of explanation, and it should be noted that the technical features of the refractory removal device of the present invention are not limited to these directions.

[0029] In the following, the X-axis shown in the attached drawings is the front-rear direction of the refractory removal device, the Y-axis is the left-right direction of the refractory removal device, and the Z-axis is the up-down direction of the refractory removal device.

[0030] Hereinafter, with reference to FIGS. 2 to 4b, the components included in a refractory removal device according to one embodiment of the present invention will be described in detail.

[0031] FIG. 2 is a cross-sectional view of a refractory removal device according to one embodiment of the present invention. FIG. 3 is a cross-sectional view illustrating the process of removing refractory material (S1) of a plurality of workpieces (S) while the refractory removal device of FIG. 2 moves.

[0032] FIG. 4a is a plan view illustrating the direction I-I' of FIG. 2. FIG. 4b is a plan view illustrating the direction II-II' of FIG. 2.

[0033] A refractory removal device according to one embodiment of the present invention may include a deck unit (100), a removal unit (200), and a rotational support unit (300).

[0034] The workpiece (S) may be a blower pipe installed in a blast furnace and having refractory material (S1) installed inside. The blower pipe is installed in the blast furnace, and hot air may be supplied into the interior of the blast furnace through the blower pipe.

[0035] Referring to FIGS. 2 and 3, the deck unit (100) may be placed around a workpiece (S) on which refractory material (S1) is installed. The deck unit (100) may be supported by a fixed structure (not shown).

[0036] A rotational support unit (300) may be positioned on the lower side of the deck unit (100), and a removal unit (200) may move on the upper side of the deck unit (100).

[0037] The removal unit (200) is installed to be movable on the deck unit (100) and can remove refractory material (S1) while moving up and down toward the work object (S). For example, the removal unit (200) can move in the left-right direction (Y) on the deck unit (100). When the left-right direction (Y) movement of the removal unit (200) is stopped, the refractory material (S1) can be removed while a part of the removal unit (200) moves up and down in the vertical direction (Z).

[0038] While moving on the deck unit (100) of the removal unit (200), the refractory material (S1) of a plurality of work objects (S) installed on a plurality of rotating support units (300) can be removed sequentially.

[0039] The rotation support unit (300) is positioned on the lower side of the deck unit (100) to fix and support the workpiece (S) and to rotate the workpiece (S) in a circumferential direction.

[0040] For example, a rotating support unit (300) may be installed on the upper side of the bottom surface (G). A discharge space (G1) may be formed on the bottom surface (G) through which refractory material (S1) removed from the workpiece (S) is discharged.

[0041] Multiple rotational support units (300) may be spaced apart along the direction of movement of the removal unit (200). For example, multiple rotational support units (300) may be spaced apart along the left-right direction (Y), and rotational support units (300) may be placed on the lower side of the removal unit (200) in the up-down direction (Z).

[0042] The refractory removal device of the present invention has the effect of improving the removal efficiency of the refractory removal operation by shortening the working time of the refractory removal operation by sequentially removing the refractory (S1) of a plurality of work objects (S) installed on a plurality of rotary support units (300).

[0043] Referring to FIGS. 2 and 3, the rotary support unit (300) may include a support body (310), a rotary rail (330), and a rotary driving member (350).

[0044] The support body (310) can fix and support the workpiece (S).

[0045] The lower side of the workpiece (S) can be inserted into the inner side of the support body (310) and fixed.

[0046] A rack gear (311) may be installed along the circumferential direction on the outer surface of the support body (310). For example, the rack gear (311) may be configured in the shape of a circular ring and installed attached to the outer surface of the support body (310). A bearing member (313) may be installed on the lower side of the support body (310).

[0047] A rotating rail (330) is installed on the lower side of a support body (310) and can guide the rotation of the support body (310). A bearing member (313) of the support body (310) may be placed on the rotating rail (330). When the support body (310) is rotated by a rotational driving member (350), the bearing member (313) can move on the rotating rail (330).

[0048] For example, the rotating rail (330) is installed on the bottom surface (G) and can be configured in the shape of a circular ring on a flat surface. The rotating rail (330) has a 'U'-shaped cross-section with the top open on the cross-section, and a bearing member (313) is placed inside the 'U'-shaped cross-section so that the bearing member (313) can be prevented from coming off.

[0049] A rotary drive member (350) is positioned around a support body (310) and can rotate the support body (310). The rotary drive member (350) may include a pinion gear (351) that meshes with a rack gear (311) and a drive motor (353) that rotates the pinion gear (351).

[0050] Referring to FIGS. 4a and 4b, the deck unit (100) may include a deck body (110) and a work hole (130).

[0051] The removal unit (200) can move on the upper side of the deck body (110).

[0052] The deck body (110) can be formed continuously in the left-right direction (Y) so that the moving wheels (215) of the moving body (210), which will be described later, can move.

[0053] A work hole (130) is formed through the deck body (110) and can form a movement path for the removal unit (200) to move to the work object (S). Multiple work holes (130) may be installed spaced apart in the deck body (110) and may be installed along the path along which the removal unit (200) moves.

[0054] For example, multiple work holes (130) may be installed spaced apart in the left-right direction (Y), which is the direction of movement of the removal unit (200), and the work holes (130) may be arranged in the central area in the front-rear direction (X). In the front-rear direction (X) end areas on both sides, work holes (130) may not be formed so that the moving body (210), which will be described later, can move.

[0055] Referring to FIG. 4a, the work hole (130) in the plane is configured as a rectangular opening, and the entire work object (S) can be exposed through the work hole (130).

[0056] Referring to FIGS. 4a and 4b, the removal unit (200) may include a movable body (210) and a removal member (230).

[0057] The movable body (210) can be installed to be movable on the deck body (110). A guide wheel (211) can be installed on the movable body (210), and the guide wheel can guide the movable body (210) to move on the guide unit (400) to be described later.

[0058] A plurality of moving wheels (215) may be installed on the lower side of the moving body (210), and as the moving wheels (215) rotate, the moving body (210) can move on the upper side of the deck body (110). A separate driving source (not shown) is installed on the moving body (210), and it can move on the deck body (110) by driving the driving source. A control unit (not shown) can remotely control the driving source to control the movement of the moving body (210).

[0059] The moving body (210) can move in the left-right direction (Y) on the deck body (110). At this time, when the breaker (231) of the removal unit (200) moves in the left-right direction (Y) to a position corresponding to the removal origin (P), the control unit (not shown) can remotely control the driving source to stop the movement of the moving body (210). A detection unit (not shown), such as an image recognition device, capable of detecting whether the breaker (231) is positioned at the location corresponding to the removal origin (P) may be installed on the lower side of the moving body (210). The detection unit (not shown) can provide a detection signal to the control unit (not shown) to cause the driving source to stop the moving body (210).

[0060] Referring to FIG. 2, the removal member (230) is installed to be able to move up and down to the work object (S) through the work hole (130) and can remove the refractory material (S1).

[0061] The removal member (230) may include a breaker (231) and a removal driving member (233).

[0062] Referring to FIG. 3, the breaker (231) may be a component that removes the refractory material (S1) of the workpiece (S) while moving up and down toward the workpiece (S). The breaker (231) may be moved up and down in the vertical direction (Z) by the removal drive member (233). For example, the breaker (231) may remove the refractory material (S1) from the workpiece (S) by applying vibration, impact, rotational force, etc., to the refractory material (S1).

[0063] The breaker (231) can remove the refractory material (S1) by applying vibration, impact, rotational force, etc., while descending while positioned in contact with the upper side of the refractory material (S1) of the workpiece (S). The removed refractory material (S1) can be discharged through a discharge space (G1) formed through the bottom surface (G), or the removed refractory material (S1) can be stored in the discharge space (G1) and then subsequently removed by being taken out to the outside.

[0064] The removal drive member (233) may be a component that provides the driving force for the breaker (231) to remove the refractory material (S1). The removal drive member (233) may raise and lower the breaker (231) and may apply vibration, impact, rotational force, etc. to the breaker (231). For example, the removal drive member (233) may provide the driving force to the breaker (231) through the driving force of a cylinder member that provides hydraulic or pneumatic pressure. As another example, the removal drive member (233) may provide the driving force to the breaker (231) through the driving force of a hydraulic motor, etc.

[0065] Referring to FIG. 2 and FIG. 4b, the refractory removal device may further include a guide unit (400).

[0066] A guide unit (400) is positioned on the upper side of a deck unit (100) and can guide the movement of a removal unit (200). For example, the guide unit (400) may be formed to extend in the left-right direction (Y) along the direction of movement of the removal unit (200), and the guide unit (400) may be installed to form a pair spaced apart in the front-back direction (X).

[0067] A guide unit (400) is positioned on the upper side of a deck unit (100), and a removal unit (200) can be movably coupled to the guide unit (400). The removal unit (200) can be fixed to the guide unit (400), and the removal unit (200) can be fixed in position on the deck unit (100) and remain immobile. For example, the removal unit (200) can be fixed to the guide unit (400) while positioned at the aforementioned removal origin (P).

[0068] FIG. 5 is a diagram illustrating the process of removing refractory material (S1) by rotating the workpiece (S) in a circumferential direction while the rotating support unit (300) of the refractory material removal device of the present invention sequentially positions a plurality of removal points (Q) of the workpiece (S) at the removal origin (P).

[0069] Referring to FIG. 5, the removal unit (200) can remove refractory material (S1) by moving up and down multiple times toward a removal origin (P) at a specific location. Specifically, the breaker (231) of the removal member (230) can remove refractory material (S1) around the removal point (Q) by moving up and down toward the removal origin (P).

[0070] The rotational support unit (300) can rotate the workpiece (S) in a circumferential direction and sequentially position multiple removal points (Q) of the workpiece (S) at the removal origin (P).

[0071] For example, the removal unit (200) can remove the refractory material (S1) while moving up and down toward the removal origin (P) at the fixed position while the position is fixed on the deck unit (100).

[0072] The removal unit (200) can remove the refractory material (S1) by moving up and down multiple times toward the removal origin (P). At this time, the rotational support unit (300) can rotate the workpiece (S) in a circumferential direction to sequentially arrange multiple removal points (Q) at positions corresponding to the removal origin (P). For example, the refractory material (S1) installed on the workpiece (S) may have a circular ring shape on a flat surface. The rotational support unit (300) can rotate the workpiece (S) by 90 degrees and sequentially arrange the first, second, third, and fourth removal points (Q1, Q2, Q3, Q4) at the removal origin (P). As the breaker (231) of the removal unit (200) moves up and down toward the removal origin (P), the refractory material (S1) at the first, second, third, and fourth removal points (Q1, Q2, Q3, Q4) can be removed sequentially.

[0073] Specifically, referring to the left side of FIG. 5, the rotating support unit (300) can remove the refractory material (S1) around the first removal point (Q1) while the removal unit (200) moves up and down toward the removal point (P) with the first removal point (Q1) positioned at a location corresponding to the removal origin (P).

[0074] Afterwards, referring to the central drawing of FIG. 5, the rotating support unit (300) can rotate the workpiece (S) to position the second removal point (Q2) at a location corresponding to the removal origin (P). As the removal unit (200) moves up and down toward the removal origin (P), the refractory material (S1) around the second removal point (Q2) can be removed.

[0075] Afterwards, referring to the central drawing of FIG. 5, the rotating support unit (300) can rotate the workpiece (S) to position the third removal point (Q3) at a location corresponding to the removal origin (P). As the removal unit (200) moves up and down toward the removal origin (P), the refractory material (S1) around the third removal point (Q3) can be removed.

[0076] Subsequently, although not shown, the rotating support unit (300) can rotate the workpiece (S) to position the fourth removal point (Q4) at a location corresponding to the removal origin (P). As the removal unit (200) moves up and down toward the removal origin (P), it can remove the refractory material (S1) around the fourth removal point (Q4).

[0077] FIG. 6 is a cross-sectional view of a refractory removal device according to another embodiment of the present invention. FIG. 7a is a plan view showing the direction III-III' of FIG. 6. FIG. 7b is a plan view showing the direction IV-IV' of FIG. 6.

[0078] The movable body (210) can be installed to be movable on the deck body (110). A handle (213) can be installed on the movable body (210), and a worker (M) can move the movable body (210) while holding the handle (213).

[0079] The operator (M) can move the movable body (210) in the left-right direction (Y) on the deck body (110). The operator (M) can stop the movement of the movable body (210) when the breaker (231) of the removal unit (200) moves in the left-right direction (Y) to a position corresponding to the removal origin (P). A detection unit (not shown), such as an image recognition device, capable of detecting whether the breaker (231) is positioned at the location corresponding to the removal origin (P) may be installed on the lower side of the movable body (210). In this case, the detection unit (not shown) can provide a detection signal to the operator (M) to cause the operator (M) to stop the movable body (210).

[0080] Referring to FIG. 7a, the work hole (130) in the plane is configured as a rectangular opening, and the work hole (130) may have a short side arranged in the front-back direction (X) and a long side arranged in the left-right direction (Y).

[0081] Referring to FIG. 7b, the worker (M) can move the movable body (210) by using the front-rear direction (X) end area, which is located outside the work hole (130) formed in the front-rear direction (X) central area, as a step. Since the work hole (130) is positioned with a short side in the front-rear direction (X), sufficient space can be secured in the front-rear direction (X) end area to be used as a step for the worker (M) to move.

[0082] FIG. 8 is a cross-sectional view of a refractory removal device according to another embodiment of the present invention.

[0083] Referring to FIG. 8, the refractory removal device may further include a bogie unit (500).

[0084] The bogie unit (500) may be installed with a plurality of rotating support units (300) and may be installed to be movable on the lower side of the deck unit (100).

[0085] The bogie unit (500) can be placed on the lower side of the deck unit (100).

[0086] The bogie unit (500) can be moved to a position away from the lower side of the deck unit (100), or to a position away from the lower side of the deck unit (100) and to the lower side of the deck unit (100). When the bogie unit (500) is moved, the bogie unit (500) and a plurality of rotating support units (300) can be moved together.

[0087] The bogie unit (500) can place a workpiece (S) on a rotating support unit (300) installed on the upper side of the bogie unit (500) at a position away from the lower side of the deck unit (100). A workpiece (S) requiring the removal of refractory material (S1) can be lifted by a crane or the like and placed on a plurality of rotating support units (300).

[0088] The bogie unit (500) may include a bogie body (510) and a discharge hole (530).

[0089] The bogie body (510) may be installed with a plurality of rotating support units (300) and may be installed to be movable on the lower side of the deck unit (100). A bogie wheel (550) is installed on the lower side of the bogie body (510) so that the bogie body (510) can move on the floor surface (G). A discharge space (G1) may not be formed in the part where the bogie wheel (550) moves.

[0090] The discharge space (G1) is formed in the central area of ​​the front-rear direction (X), and a floor surface (G) on which the bogie wheel (550) of the bogie body (510) can move can be formed in the end area of ​​the front-rear direction (X). The floor surface (G) can be formed continuously in the left-right direction (Y) so that the bogie body (510) can move in the left-right direction (Y).

[0091] That is, a floor surface (G) can be positioned at both end regions in the front-rear direction (X) of the discharge space (G1), with the discharge space (G1) in between in the front-rear direction (X). Specifically, it can be arranged in the order of floor surface (G) - discharge space (G1) - floor surface (G) in the front-rear direction (X). The floor surface (G) can be formed continuously in the left-right direction (Y) so that the bogie wheel (550) can move.

[0092] The discharge hole (530) is formed through the bogie body (510) and can form a discharge path through which the refractory material (S1) removed from the work object (S) is discharged. When the removal unit (200) performs the refractory material (S1) removal operation, the discharge hole (530) can be positioned at a location corresponding to the discharge space (G1) formed on the bottom surface (G). Accordingly, the removed refractory material (S1) can be moved to the discharge space (G1) by passing through the discharge hole (530).

[0093] Although embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and it will be obvious to those skilled in the art that various modifications and variations are possible within the scope of the technical concept of the present invention as described in the claims. Explanation of the symbols

[0094] 100: Deck Unit 110: Deck Main Body 130: Work hole 200: Removal unit 210: Moving body 211: Guide wheel 213: Handle 215: Moving wheel 230: Removal component 231: Breaker 233: Removal drive member 300: Rotation support unit 310: Support body 311: Rack gear 313: Bearing member 330: Rotating rail 350: Rotary drive member 351: Pinion gear 353: Drive motor 400: Guide unit 500: Bogie unit 510: Bogie body 530: Discharge hole 550: Bogie wheel G: Floor surface G1: Exhaust space M, M': Worker P: Removal origin Q: Removal point Q1: 1st removal point Q2: Second removal point Q3: Third removal point Q4: 4th removal point S, S': Work object S1, S1': Refractory material X: Front and rear directions Y: Left / Right direction Z: Up / Down direction

Claims

Claim 1 A refractory material removal device comprising: a deck unit disposed around a workpiece on which refractory material is installed; a removal unit installed movably on the deck unit and removing the refractory material while moving up and down toward the workpiece; and a rotation support unit disposed below the deck unit to fix and support the workpiece and rotate the workpiece in a circumferential direction, wherein a plurality of rotation support units are spaced apart along the direction of movement of the removal unit. Claim 2 A refractory material removal device according to claim 1, wherein the removal unit removes the refractory material by being raised and lowered multiple times toward a removal origin at a specific location, and the rotating support unit rotates the workpiece in a circumferential direction while sequentially positioning multiple removal points of the workpiece at the removal origin. Claim 3 A refractory material removal device comprising: a deck unit disposed around a workpiece on which refractory material is installed; a removal unit installed movably on the deck unit and removing the refractory material while moving up and down toward the workpiece; and a rotation support unit disposed below the deck unit to fix and support the workpiece and rotate the workpiece in a circumferential direction; wherein the deck unit comprises: a deck body on which the removal unit moves; and a work hole formed through the deck body and forming a movement path for the removal unit to move toward the workpiece. Claim 4 In paragraph 3, the removal unit comprises: a movable body installed to be movable on the deck body; and a removal member installed to be vertically movable to the work object through the work hole and removing the refractory material; a refractory material removal device. Claim 5 A refractory material removal device comprising: a deck unit disposed around a workpiece on which refractory material is installed; a removal unit installed to be movable on the deck unit and removing the refractory material while moving up and down toward the workpiece; and a rotational support unit disposed below the deck unit to fix and support the workpiece and rotate the workpiece in a circumferential direction; wherein the rotational support unit comprises: a support body on which the workpiece is fixedly supported; a rotational rail installed below the support body and guiding the rotation of the support body; and a rotational driving member disposed around the support body and rotating the support body. Claim 6 A refractory material removal device comprising: a deck unit disposed around a workpiece on which refractory material is installed; a removal unit installed movably on the deck unit and removing the refractory material while moving up and down toward the workpiece; a rotation support unit disposed below the deck unit to fix and support the workpiece and rotate the workpiece in a circumferential direction; and a guide unit disposed above the deck unit and guiding the movement of the removal unit. Claim 7 A refractory material removal device comprising: a deck unit positioned around a workpiece on which refractory material is installed; a removal unit installed movably on the deck unit and removing the refractory material while moving up and down toward the workpiece; a rotational support unit positioned below the deck unit to fix and support the workpiece and rotate the workpiece in a circumferential direction; and a trolley unit installed movably below the deck unit and having a plurality of the rotational support units installed thereon.

Images