Transverse swing lifting blowing slag removal device and hot metal pretreatment system

Abstract

This invention relates to a transverse swing lifting-type air-blowing slag removal device and a molten iron pretreatment system. The transverse swing lifting-type air-blowing slag removal device includes: a slag removal support frame structure, including a support frame body, with a first hinge point at the top of the support frame body; a transverse structure, including a transverse car, a traveling track, and an anti-tipping track, the transverse car including a transverse car frame, with a driving wheel structure and a driven wheel structure at the bottom of the transverse car frame, and a swing drive structure located below the first hinge point, the support frame body swinging around the first hinge point under the drive of the swing drive structure; the transverse drive structure drives the driving wheel structure to move the transverse car frame and the slag removal support frame structure along the traveling track, the driven wheel structure is movably fitted onto one side of the anti-tipping track to prevent the slag removal support frame structure from tipping over; and a slag removal head lifting structure. This invention can significantly improve slag removal efficiency and achieve a reasonable arrangement of a multi-functional lifting-type change car and a transverse swing lifting-type air-blowing slag removal device.

Description

Technical Field

[0001] This invention relates to the field of steelmaking technology, and in particular to a transverse swing lifting air blowing slag removal device and a molten iron pretreatment system. Background Technology

[0002] Hot metal pretreatment is an indispensable part of optimizing the steelmaking process and plays an important role. Currently, the two most common methods are the injection method and the KR method.

[0003] With the widespread application of molten iron pretreatment, in order to reduce molten iron waste, improve slag removal efficiency, and control costs, slag removal devices have been gradually installed in molten iron pretreatment areas.

[0004] Initially, conventional slag-removing devices were generally fixed, meaning only the lance body could be raised and lowered to enable air blowing. These older devices could not swing to coordinate with the tilting of the molten iron ladle; they could only spray air at fixed points, thus limiting their slag-removing effectiveness and reducing efficiency.

[0005] In existing technologies, the old-style mixing head replacement vehicle corresponding to the slag removal device is generally a flatbed truck structure with a separate mobile platform for maintenance. The old-style mixing head replacement vehicle can only move to transport the mixing head. The equipment itself is low, and operators cannot stand on the vehicle to disassemble bolts and other connecting parts at the top of the mixing head, so a separate mobile platform is required.

[0006] The double-layer, multi-functional, adjustable, lifting agitator head replacement cart features lifting, rotation, and lateral movement functions. Operators can operate from the second layer of the cart and utilize its adjustment functions, simplifying the disassembly, assembly, and maintenance of the agitator head. Because this multi-functional agitator head replacement cart is relatively tall, conventional fixed slag removal devices cannot be used simultaneously with it due to spatial interference, thus limiting the optimal configuration of molten iron pretreatment facilities.

[0007] Therefore, based on years of experience and practice in related industries, the inventor proposes a transverse swing lifting air blowing slag removal device and molten iron pretreatment system to overcome the defects of the prior art. Summary of the Invention

[0008] The purpose of this invention is to provide a transverse swing lifting air-blowing slag removal device and a molten iron pretreatment system. This invention is equipped with a transverse function and solves the problem of equipment center of gravity deviation through an anti-tipping structure. It also solves the problem of low efficiency caused by the fixed-point function of the old conventional air-blowing slag removal device. It can significantly improve slag removal efficiency, reduce molten iron loss, and lower production costs. It can realize the rational arrangement of multi-functional lifting change car and transverse swing lifting air-blowing slag removal, reduce the labor intensity of operators, and broaden the new layout forms of molten iron pretreatment.

[0009] The objective of this invention is achieved by providing a transverse, swinging, lifting air-blowing slag-removing device, comprising:

[0010] The slag removal support frame structure includes a support frame body, and a first hinge point is provided at the top of the support frame body;

[0011] A transverse movement structure includes a transverse movement vehicle and a transversely arranged travel track and an anti-tipping track. The anti-tipping track is located on the side of the travel track away from the support frame body. The transverse movement vehicle includes a transverse movement frame, with a drive wheel structure and a driven wheel structure at the bottom end of the transverse movement frame. A transverse movement drive structure is connected to the drive wheel structure. The support frame body is hinged to the transverse movement frame through a first hinge point. A swing drive structure is located below the first hinge point on the transverse movement frame. The support frame body can swing around the first hinge point under the drive of the swing drive structure. The transverse movement drive structure drives the drive wheel structure to move the transverse movement frame and the slag-driving support frame structure along the travel track. The driven wheel structure is movably sleeved on one side of the anti-tipping track to prevent the slag-driving support frame structure from tipping over.

[0012] The slag removal lifting structure includes a lifting vehicle, on which a lifting drive structure is connected, and the lifting vehicle can move up and down along the support frame body under the drive of the lifting drive structure;

[0013] The slag-driving head structure is connected to the lifting vehicle and can move up and down along the support frame body with the lifting vehicle, and can also move laterally with the slag-driving support frame structure.

[0014] In a preferred embodiment of the present invention, an air blowing and slag removal device platform is provided at the top of the support frame body, and the traveling track and the anti-tipping track are fixedly provided on the air blowing and slag removal device platform; the anti-tipping track includes a track body, and a U-shaped opening groove is provided on the side of the track body away from the support frame body; the driven wheel structure includes a driven wheel and a driven wheel bracket, the driven wheel is hinged to the driven wheel bracket, the driven wheel bracket is fixedly connected to the bottom end of the transverse frame, and the driven wheel is clamped in the U-shaped opening groove.

[0015] In a preferred embodiment of the present invention, the drive wheel structure includes a drive wheel and a drive wheel bracket, the drive wheel bracket is fixedly connected to the bottom end of the traverse frame, and the drive wheel is hinged to the drive wheel bracket; the traverse drive structure includes a first reduction motor, the first reduction motor drives the drive wheel to rotate so that it moves along the travel track.

[0016] In a preferred embodiment of the present invention, a swing bracket is provided at the top of the support frame body, a first hinge bushing is provided on the swing bracket, a swing base is provided on the transverse frame, a second hinge bushing is provided on the swing base, a first hinge shaft passes through the first hinge bushing and the second hinge bushing, and the axis of the first hinge shaft constitutes the first hinge point.

[0017] In a preferred embodiment of the present invention, the swing drive structure includes an electro-hydraulic actuator, a first push connecting seat is provided on the support frame body below the swing bracket, a second push connecting seat is provided on the transverse frame, and the two ends of the electro-hydraulic actuator are respectively hinged to the first push connecting seat and the second push connecting seat; a push motor is connected to the electro-hydraulic actuator.

[0018] In a preferred embodiment of the present invention, the lifting drive structure includes a second geared motor, a drive chain structure is connected to the second geared motor, and the lifting vehicle is connected to the drive chain structure.

[0019] In a preferred embodiment of the present invention, the drive chain structure includes a main sprocket, an upper sprocket, and a lower sprocket. The main sprocket is connected to the second reduction motor. The upper sprocket and the lower sprocket are hinged to the support frame body. The main sprocket and the upper sprocket are connected by a first chain, and the upper sprocket and the lower sprocket are connected by a second chain. The lifting vehicle is connected to the second chain. The second reduction motor drives the main sprocket to rotate, thereby driving the upper sprocket to rotate via the first chain. The rotation of the upper sprocket drives the second chain to move, thereby causing the lifting vehicle connected to it to move up and down.

[0020] In a preferred embodiment of the present invention, an encoder is coaxially mounted on the upper sprocket, the encoder being used to detect the number of rotations of the upper sprocket to control the moving distance of the lifting vehicle.

[0021] In a preferred embodiment of the present invention, a lifting guide rail is provided on the support frame body, and a lifting roller is provided on the lifting vehicle, the lifting roller being able to move along the lifting guide rail.

[0022] In a preferred embodiment of the present invention, the slag-driving head structure includes a main body, a slag-driving head, and a clamp. The slag-driving head is connected to the main body through the clamp, and the main body is fixedly connected to the lifting vehicle.

[0023] The object of the present invention can also be achieved as follows: a molten iron pretreatment system includes a molten iron ladle, a slag remover, a stirring device, a stirring head replacement cart, and the aforementioned transverse swing lifting air-blowing slag removal device. The transverse structure and the swing drive structure of the transverse swing lifting air-blowing slag removal device are located above the stirring head replacement cart. The molten iron ladle, the slag remover, and the stirring head replacement cart are arranged from bottom to top. The slag removal head structure of the transverse swing lifting air-blowing slag removal device can be raised and lowered along the support frame body to insert into or leave the molten iron ladle. The transverse swing lifting air-blowing slag removal device can move laterally under the drive of the transverse car to alternately occupy the working position with the stirring head replacement cart.

[0024] As described above, the transverse swing lifting air blowing slag removal device and molten iron pretreatment system of the present invention have the following beneficial effects:

[0025] The transverse swing lifting air blowing slag removal device of the present invention is equipped with a transverse structure, which can realize the transverse movement of the whole equipment, meet the transverse movement requirements at the work station, effectively solve the arrangement problem of collision and interference with the stirring head replacement vehicle, provide a new idea for the layout of molten iron pretreatment plant, and promote the development of molten iron pretreatment towards high efficiency.

[0026] The contact points between the slag-driving support frame structure and the lateral movement structure of the present invention are on the traveling track and the anti-tipping track. Through the driven wheel structure and the anti-tipping track, a mechanical structure to prevent tipping is formed, and lateral movement can be achieved. This can solve the tipping problem caused by the center of gravity of the whole equipment, especially when the slag-driving head is in a low working position, being biased towards the molten iron ladle.

[0027] Compared with the fixed air blowing device for slag removal, the present invention can realize the swing of the slag removal head structure on the slag removal support frame structure under the action of the swing drive structure, so as to match the tilting angle of the molten iron ladle, which can improve the slag removal efficiency and reduce the loss of molten iron.

[0028] In the molten iron pretreatment system of the present invention, the transverse swing lifting air blowing slag removal device can achieve overall transverse movement to adapt to the multi-functional lifting stirring head replacement vehicle without affecting its maintenance; the slag removal head structure of the transverse swing lifting air blowing slag removal device can swing to adapt to different tilting angles of the molten iron ladle; the slag removal head structure of the transverse swing lifting air blowing slag removal device can be raised and lowered to cooperate with the stirring device to avoid interference and collision.

[0029] The hot metal pretreatment system of the present invention can realize the rational arrangement of the stirring head replacement car and the transverse swing lifting air blowing slag removal device, reduce the labor intensity of operators, and broaden the new arrangement forms of hot metal pretreatment; the arrangement of the present invention is simple, only requiring the addition of a small steel structure platform to the old plant, and can be widely applied to new projects and old project renovations.

[0030] This invention solves the problem of low efficiency in the old-fashioned conventional air blowing slag removal function, and can significantly improve slag removal efficiency, reduce molten iron loss, and lower production costs. Attached Figure Description

[0031] The accompanying drawings are intended only to illustrate and explain the present invention and do not limit the scope of the invention.

[0032] in:

[0033] Figure 1 : This is a front view of the transverse swing lifting air blowing slag removal device of the present invention.

[0034] Figure 2 : This is a top view of the transverse swing lifting air blowing slag removal device of the present invention.

[0035] Figure 3 : This is a schematic diagram of the transverse displacement structure of the present invention.

[0036] Figure 4 : This is a front view of the first hinge point of the present invention.

[0037] Figure 5 : This is a top view of the first hinge point of the present invention.

[0038] Figure 6 : This is a side view of the first hinge point of the present invention.

[0039] Figure 7 : This is a schematic diagram of the anti-tipping track of the present invention.

[0040] Figure 8 : This is a schematic diagram of the walking track of the present invention.

[0041] Figure 9 This is a schematic diagram of the slag-driving head lifting structure, slag-driving support frame structure, and slag-driving head structure when the slag-driving head structure of the present invention is in a high position.

[0042] Figure 10 This is a schematic diagram of the slag-driving head lifting structure, slag-driving support frame structure, and slag-driving head structure when the slag-driving head structure of the present invention is in a low position.

[0043] Figure 11 : This is a front view of the top of the slag-removing head lifting structure of the present invention.

[0044] Figure 12 : This is a side view of the top of the slag-removing head lifting structure of the present invention.

[0045] Figure 13 : This is a schematic diagram of the lifting vehicle of the present invention.

[0046] Figure 14 : This is a schematic diagram of the support frame body of the present invention.

[0047] Figure 15 : This is a schematic diagram of the slag-removing head structure of the present invention.

[0048] Figure 16 : This is a front view of the molten iron pretreatment system of the present invention.

[0049] Figure 17 : This is a top view of the molten iron pretreatment system of the present invention.

[0050] In the picture:

[0051] 1. Slag-driving support frame structure; 11. Support frame body; 12. Swing drive structure; 121. Electro-hydraulic actuator; 13. Swing bracket;

[0052] 2. Lateral movement structure; 21. Traveling track; 22. Anti-tipping track; 221. Track body; 222. U-shaped opening slot; 23. Lateral movement vehicle; 231. Lateral movement vehicle frame; 232. Drive wheel structure; 2321. Drive wheel; 2322. Drive wheel bracket; 233. Driven wheel structure; 2331. Driven wheel; 2332. Driven wheel bracket; 24. Lateral movement drive structure; 25. Swing base;

[0053] 3. Slag-driving head lifting structure; 31. Lifting vehicle; 32. Second reduction motor; 331. Main sprocket; 332. Upper sprocket; 333. Lower sprocket; 334. First chain; 335. Second chain; 34. Encoder;

[0054] 4. Slag-driving head structure; 41. Main body; 42. Clamp; 43. Slag-driving head;

[0055] 5. Air blowing and slag removal device platform;

[0056] 61. Ladle of molten iron; 62. Slag remover; 63. Agitator; 64. Agitator head changing cart; 65. Ladle of molten iron tipping cart; 66. Gas hose. Detailed Implementation

[0057] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0058] The specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, all of which should be considered within the scope of the invention. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "linked" should be interpreted broadly; for example, they can refer to mechanical or electrical connections, or internal communication between two elements, and can be direct or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0060] like Figures 1 to 15 As shown, the present invention provides a transverse swing lifting air blowing slag removal device, comprising,

[0061] The slag removal support frame structure 1 includes a support frame body 11, with a first hinge point at the top of the support frame body 11.

[0062] The transverse movement structure 2 includes a transverse movement vehicle 23 and a transversely arranged travel track 21 and an anti-tipping track 22. The anti-tipping track 22 is located on the side of the travel track 21 away from the support frame body 11. The transverse movement vehicle 23 includes a transverse movement frame 231. The bottom end of the transverse movement frame 231 is provided with a drive wheel structure 232 and a driven wheel structure 233. The drive wheel structure 232 is connected to a transverse movement drive structure 24. The support frame body 11 is hinged to the transverse movement frame 231 through a first hinge point. A swing drive structure 12 is provided on the transverse movement frame 231 below the first hinge point. The support frame body 11 can swing around the first hinge point under the drive of the swing drive structure 12. The transverse movement drive structure 24 drives the drive wheel structure 232 to move the transverse movement frame 231 and the slag-driving support frame structure 1 along the travel track 21. The driven wheel structure 233 can be movably sleeved on one side of the anti-tipping track 22 to prevent the slag-driving support frame structure 1 from tipping over.

[0063] The slag removal lifting structure 3 includes a lifting vehicle 31, on which a lifting drive structure is connected. The lifting vehicle 31 can move up and down along the support frame body 11 under the drive of the lifting drive structure.

[0064] The slag-driving head structure 4 is used to blow air into the molten iron in the ladle to drive the slag to one side of the slag-driving machine. It is connected to the lifting car 31 and can move up and down along the support frame body 11 with the lifting car 31, and can also move laterally with the slag-driving support frame structure 1.

[0065] The slag-driving support frame structure 1 and the slag-driving head structure 4 installed on it are connected to the transverse moving structure 2, which can realize the transverse movement of the whole equipment and meet the transverse movement requirements at the work station. It effectively solves the arrangement problem of collision and interference with the stirring head replacement vehicle, provides a new idea for the layout of molten iron pretreatment plant, and promotes the high-efficiency development of molten iron pretreatment.

[0066] The contact points between the slag-driving support frame structure 1 and the lateral movement structure 2 of the present invention are on the traveling track 21 and the anti-tipping track 22. The center of gravity of the slag-driving support frame structure 1 and the slag-driving head structure 4 installed on it is located on the right side of the traveling track, that is, the head side of the slag-driving head structure 4. Through the driven wheel structure 233 and the anti-tipping track 22, a mechanical structure to prevent tipping is formed, and lateral movement can be realized. This can solve the tipping problem caused by the center of gravity of the whole equipment, especially when the slag-driving head is in a low working position, being biased towards the molten iron ladle.

[0067] Compared to the fixed air blowing device for slag removal, the present invention can realize the swing of the slag removal head structure 4 on the slag removal support frame structure 1 under the action of the swing drive structure 12, so as to match the tilting angle of the molten iron ladle, thereby improving the slag removal efficiency and reducing the loss of molten iron.

[0068] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 7 As shown, an air blowing and slag removal device platform 5 is set at the top of the support frame body 11. The traveling track 21 and the anti-tipping track 22 are fixedly set on the air blowing and slag removal device platform 5. The anti-tipping track 22 includes a track body 221. A U-shaped opening groove 222 is set on the side of the track body 221 away from the support frame body. The driven wheel structure 233 includes a driven wheel 2331 and a driven wheel bracket 2332. The driven wheel 2331 is hinged to the driven wheel bracket 2332. The driven wheel bracket 2332 is fixedly connected to the bottom end of the transverse frame 231 (bolted connection). The driven wheel 2331 is sandwiched in the U-shaped opening groove 222.

[0069] Furthermore, such as Figure 1 , Figure 2 , Figure 3As shown, the drive wheel structure 232 includes a drive wheel 2321 and a drive wheel bracket 2322. The drive wheel bracket 2322 is fixedly connected to the bottom end of the transverse frame 231 (bolted connection), and the drive wheel 2321 is hinged to the drive wheel bracket 2322. The transverse drive structure 24 includes a first geared motor, which drives the drive wheel 2321 to rotate so that the transverse vehicle 23 moves along the travel track 21.

[0070] like Figure 1 , Figure 3 As shown, the transverse frame 231 is welded from steel plates. The transverse car 23 is connected to the top of the slag-driving support frame structure 1. Driven by the first reduction motor, the transverse car drives the slag-driving support frame structure 1 and its connected structures to move laterally along the travel track 21 and the anti-tipping track 22, so as to quickly achieve the position of the mixing head replacement car and avoid interference.

[0071] like Figure 7 As shown, in this embodiment, the track body 221 is made of steel plate welded together, and is a steel plate welded structure. The middle part is rectangular, and a U-shaped opening groove 222 is provided on one side. The opening is on its side. The driven wheel 2331 is clamped in the U-shaped opening groove 222. On the one hand, it cooperates with the lateral movement of the transverse car 23, and on the other hand, it also prevents the overall equipment from tipping over when the air blowing slag gun is off-center.

[0072] like Figure 8 As shown, wheel stops are welded to both ends of the travel track 21 to limit the movement of the traverse vehicle 23.

[0073] A shim is installed at the bottom of the track body 221, and the shim is fixed to the base plate by bolts. The base plate is welded to the air blowing and slag removal device platform 5.

[0074] The entire travel track 21 and anti-tipping track 22 are welded to the air blowing and slag removal device platform 5 (on which is connected base plate), located below the wheels, to create track conditions for the wheels to travel.

[0075] Furthermore, such as Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a swing bracket 13 is provided at the top of the support frame body 11, a first hinge bushing is provided on the swing bracket 13, a swing base 25 is provided on the transverse frame 231, a second hinge bushing is provided on the swing base 25, a first hinge shaft passes through the first hinge bushing and the second hinge bushing, and the axis of the first hinge shaft forms the first hinge point.

[0076] The swing base 25 provides support and is fixed to the transverse frame 231 by bolts. The swing bracket 13 is connected to the support frame body 11 by bolts. Under the action of external force, the swing bracket 13 can drive the support frame body 11 to rotate around the first hinge point (the axis of the first hinge shaft) and swing within a certain angle range.

[0077] Furthermore, such as Figure 3 As shown, the swing drive structure 12 includes an electro-hydraulic push rod 121. A first push connecting seat is provided on the support frame body 11 below the swing bracket 13, and a second push connecting seat is provided on the transverse frame 231. The two ends of the electro-hydraulic push rod 121 are respectively hinged to the first push connecting seat and the second push connecting seat; a push motor is connected to the electro-hydraulic push rod 121.

[0078] When the electro-hydraulic actuator 121 is pushed, the first end of the electro-hydraulic actuator 121 rotates around the hinge point of the second push connection seat, and the second end of the electro-hydraulic actuator 121 pushes the support frame body 11 to swing around the first hinge point.

[0079] Furthermore, such as Figure 2 , Figure 9 , Figure 10 , Figure 11 , Figure 12 As shown, the lifting drive structure includes a second reduction motor 32, a drive chain structure connected to the second reduction motor 32, and a lifting vehicle 31 connected to the drive chain structure. The support frame body 11 is welded from steel plates and serves as a support structure. The drive chain structure is fixed on it, and the lifting vehicle 31 moves on the support frame body 11.

[0080] Furthermore, such as Figure 9 , Figure 10 , Figure 11 , Figure 12 As shown, the drive chain structure includes a main sprocket 331, an upper sprocket 332, and a lower sprocket 333. The main sprocket 331 is connected to the second reduction motor 32. The upper sprocket 332 and the lower sprocket 333 are hinged to the support frame body 11. The main sprocket 331 and the upper sprocket 332 are connected by a first chain 334, and the upper sprocket 332 and the lower sprocket 333 are connected by a second chain 335. The lifting vehicle 31 is connected to the second chain 335. The second reduction motor 32 drives the main sprocket 331 to rotate, thereby driving the upper sprocket 332 to rotate through the first chain 334. The rotation of the upper sprocket 332 drives the second chain 335 to move, thereby causing the lifting vehicle 31 connected to it to move up and down.

[0081] Furthermore, such as Figure 12 As shown, an encoder 34 is coaxially mounted on the upper sprocket 332. The encoder 34 is used to detect the number of rotations of the upper sprocket 332, which can be converted into the moving distance of the lifting vehicle 31 for lifting control.

[0082] Furthermore, such as Figure 14 As shown, a lifting guide rail is provided on the support frame body 11, such as... Figure 13 As shown, the lifting vehicle 31 includes a lifting frame and four lifting rollers, which can move along the lifting guide rail.

[0083] Furthermore, such as Figure 9 , Figure 10 , Figure 15 As shown, the slag-driving head structure 4 includes a main body 41, a slag-driving head 43, and a clamp 42. The slag-driving head 43 is connected to the main body 41 through the clamp 42, and the main body 41 is fixedly connected to the lifting vehicle 31.

[0084] The slag-removing head 43 is welded from steel pipes, with refractory material protection at the front end of the air outlet. The slag-removing head 43 is connected to the main pipe body 41 via a clamp 42. The main pipe body 41 is bolted to the lifting car 31 and moves with it, thereby driving the slag-removing head 43 to rise or fall. When the slag-removing head 43 descends and inserts into the molten iron, compressed air enters from the air inlet and is blown out from the air outlet of the slag-removing head 43, pushing the slag on the surface of the molten iron to the ladle opening, facilitating the removal of the slag by the slag remover.

[0085] Furthermore, the power source of the present invention adopts a first geared motor, a second geared motor 32 and an electro-hydraulic actuator 121, which only requires power supply and does not require a separate hydraulic system or hydraulic cable chain. The equipment is simple, compact in structure and low in investment cost.

[0086] like Figure 16 , Figure 17 As shown, the present invention also provides a molten iron pretreatment system, including a molten iron ladle 61 (installed on a molten iron ladle tilting car 65), a slag remover 62, a stirring device 63, a stirring head replacement car 64, and the aforementioned transverse swing lifting air-blowing slag removal device. The transverse structure 2 and the swing drive structure 12 of the transverse swing lifting air-blowing slag removal device are located above the stirring head replacement car 64. The molten iron ladle 61, the slag remover 62, and the stirring head replacement car 64 are arranged from bottom to top. The slag removal head structure 4 of the transverse swing lifting air-blowing slag removal device can be raised and lowered along the support frame body 11 to insert into or leave the molten iron ladle 61. The transverse swing lifting air-blowing slag removal device can move laterally under the drive of the transverse car 23 to alternately occupy the working position with the stirring head replacement car 64.

[0087] The lateral swing lifting air-blowing slag-removing device is positioned high above the mixing head replacement vehicle 64 (a multi-functional lifting mixing head replacement vehicle), which in turn is positioned high above the slag remover 62. The working position of the lateral swing lifting air-blowing slag-removing device, aligned with the mixing device 63 and the mixing head replacement vehicle 64, is its working position. When the mixing head replacement vehicle 64 needs to be moved for work, the lateral swing lifting air-blowing slag-removing device must be moved laterally to a maintenance waiting position.

[0088] The lateral movement, swinging and lifting motion of the horizontal oscillation slag removal device is detected by proximity switches and encoders. It can be interlocked with the stirring device 63, slag remover 62, stirring head changing car 64, molten iron ladle tilting car, pneumatic system, etc. It can be operated remotely or automatically controlled, without the need for on-site operation and supervision by workers, reducing labor intensity and saving labor costs.

[0089] In the molten iron pretreatment system of the present invention, the transverse swing lifting air blowing slag removal device can be moved horizontally as a whole to adapt to the replacement vehicle of the multi-functional lifting stirring head without affecting its maintenance; the slag removal head structure 4 of the transverse swing lifting air blowing slag removal device can swing to adapt to different tilting angles of the molten iron ladle, and the slag removal head structure 4 of the transverse swing lifting air blowing slag removal device can be raised and lowered to cooperate with the stirring device to avoid interference and collision.

[0090] The hot metal pretreatment system of this invention allows for a rational arrangement of the stirring head replacement cart and the transverse swing lifting air-blowing slag removal device, reducing the labor intensity of operators, expanding the new layout forms of hot metal pretreatment, and effectively improving product competitiveness. This invention has a simple layout, requiring only the addition of a small steel structure platform to an existing plant building, and can be widely applied to new projects and renovations of existing projects.

[0091] This invention solves the problem of low efficiency in the old-fashioned conventional air blowing slag removal function, and can significantly improve slag removal efficiency, reduce molten iron loss, and lower production costs.

[0092] The working process of the molten iron pretreatment system of the present invention is as follows:

[0093] The molten iron ladle tilting car 65, containing the molten iron ladle 61, moves ( Figure 16 From right to left, the stirring device 63 descends to directly below the stirring device 63. After the stirring device 63 descends, it stirs the molten iron in the ladle 61. Then, the stirring device 63 rises to its waiting position. The molten iron ladle 61 tilts at a certain angle from its vertical position, and the slag remover 62 removes the slag from the molten iron ladle 61. According to the angle of the molten iron ladle 61, the electro-hydraulic push rod 121 in the horizontal swing lifting air blowing slag removal device is energized, pushing the support frame body 11 to swing to the corresponding position. The second reduction motor 32 is energized, and at the same time, the encoder 34 detects the position, driving the lifting car 31 and then driving the slag removal head structure 4 to descend from the high waiting position to the low working position. The slag removal head 43 is inserted into the molten iron. The pneumatic system (existing technology) is activated to blow compressed air into the molten iron through the gas hose 66 and the slag removal head 43, blowing the slag towards one side of the slag remover to improve the slag removal efficiency. After the slag removal is completed, the second reduction motor 32 is energized and reverses to drive the slag removal head 43 to rise to the high waiting position. The electro-hydraulic push rod 121 is energized and retracts, swinging the support frame body 11 back to its initial waiting position. The molten iron ladle 61 is tilted back to the vertical position to continue the stirring process, or the molten iron ladle tilting car is moved to the next process.

[0094] The transverse swing lifting air-blowing slag-removing device is normally in the working position. When the mixing head replacement cart 64 needs to work, the transverse drive structure 24 in the transverse structure 2 is energized to drive the transverse cart 23, which in turn drives the entire transverse swing lifting air-blowing slag-removing device to move laterally along the travel track 21 from the working position to the maintenance waiting position. Then the mixing head replacement cart 64 moves to directly under the mixing device 63 to perform its work, and then returns after completion. Figure 17 From right to left, proceed to the waiting position for the replacement vehicle. The transverse swing lifting air-blowing slag-removing device moves in the opposite direction to its working position.

[0095] As described above, the transverse swing lifting air blowing slag removal device and molten iron pretreatment system of the present invention have the following beneficial effects:

[0096] The transverse swing lifting air blowing slag removal device of the present invention is equipped with a transverse structure, which can realize the transverse movement of the whole equipment, meet the transverse movement requirements at the work station, effectively solve the arrangement problem of collision and interference with the stirring head replacement vehicle, provide a new idea for the layout of molten iron pretreatment plant, and promote the development of molten iron pretreatment towards high efficiency.

[0097] The contact points between the slag-driving support frame structure and the lateral movement structure of the present invention are on the traveling track and the anti-tipping track. Through the driven wheel structure and the anti-tipping track, a mechanical structure to prevent tipping is formed, and lateral movement can be achieved. This can solve the tipping problem caused by the center of gravity of the whole equipment, especially when the slag-driving head is in a low working position, being biased towards the molten iron ladle.

[0098] Compared with the fixed air blowing device for slag removal, the present invention can realize the swing of the slag removal head structure on the slag removal support frame structure under the action of the swing drive structure, so as to match the tilting angle of the molten iron ladle, which can improve the slag removal efficiency and reduce the loss of molten iron.

[0099] In the molten iron pretreatment system of the present invention, the transverse swing lifting air blowing slag removal device can achieve overall transverse movement to adapt to the multi-functional lifting stirring head replacement vehicle without affecting its maintenance; the slag removal head structure of the transverse swing lifting air blowing slag removal device can swing to adapt to different tilting angles of the molten iron ladle; the slag removal head structure of the transverse swing lifting air blowing slag removal device can be raised and lowered to cooperate with the stirring device to avoid interference and collision.

[0100] The hot metal pretreatment system of the present invention can realize the rational arrangement of the stirring head replacement car and the transverse swing lifting air blowing slag removal device, reduce the labor intensity of operators, and broaden the new arrangement forms of hot metal pretreatment; the arrangement of the present invention is simple, only requiring the addition of a small steel structure platform to the old plant, and can be widely applied to new projects and old project renovations.

[0101] This invention solves the problem of low efficiency in the old-fashioned conventional air blowing slag removal function, and can significantly improve slag removal efficiency, reduce molten iron loss, and lower production costs.

[0102] The above description is merely an illustrative embodiment of the present invention and is not intended to limit the scope of the invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A transverse swing lifting air blowing slag removal device, characterized in that, include, The slag removal support frame structure includes a support frame body, and a first hinge point is provided at the top of the support frame body; A transverse movement structure includes a transverse movement vehicle and a transversely arranged travel track and an anti-tipping track. The anti-tipping track is located on the side of the travel track away from the support frame body. The transverse movement vehicle includes a transverse movement frame, with a drive wheel structure and a driven wheel structure at the bottom end of the transverse movement frame. A transverse movement drive structure is connected to the drive wheel structure. The support frame body is hinged to the transverse movement frame through a first hinge point. A swing drive structure is located below the first hinge point on the transverse movement frame. The support frame body can swing around the first hinge point under the drive of the swing drive structure. The transverse movement drive structure drives the drive wheel structure to move the transverse movement frame and the slag-driving support frame structure along the travel track. The driven wheel structure is movably sleeved on one side of the anti-tipping track to prevent the slag-driving support frame structure from tipping over. The slag removal lifting structure includes a lifting vehicle, on which a lifting drive structure is connected, and the lifting vehicle can move up and down along the support frame body under the drive of the lifting drive structure; The slag-driving head structure is connected to the lifting vehicle and can move up and down along the support frame body with the lifting vehicle, and can also move laterally with the slag-driving support frame structure. An air-blowing slag-removing device platform is provided at the top of the support frame body. The traveling track and the anti-tipping track are fixedly installed on the air-blowing slag-removing device platform. The anti-tipping track includes a track body, and a U-shaped opening groove is provided on the side of the track body away from the support frame body. The driven wheel structure includes a driven wheel and a driven wheel bracket. The driven wheel is hinged to the driven wheel bracket, and the driven wheel bracket is fixedly connected to the bottom end of the transverse frame. The driven wheel is clamped in the U-shaped opening groove. The drive wheel structure includes a drive wheel and a drive wheel bracket. The drive wheel bracket is fixedly connected to the bottom end of the traversing frame, and the drive wheel is hinged to the drive wheel bracket. The traversing drive structure includes a first reduction motor, which drives the drive wheel to rotate so that it moves along the travel track.

2. The transverse swing lifting air blowing slag removal device as described in claim 1, characterized in that, A swing bracket is provided at the top of the support frame body, a first hinge bushing is provided on the swing bracket, a swing base is provided on the transverse frame, a second hinge bushing is provided on the swing base, a first hinge shaft passes through the first hinge bushing and the second hinge bushing, and the axis of the first hinge shaft constitutes the first hinge point.

3. The transverse swing lifting air blowing slag removal device as described in claim 2, characterized in that, The swing drive structure includes an electro-hydraulic actuator. A first push connection seat is provided on the support frame body below the swing bracket, and a second push connection seat is provided on the transverse frame. The two ends of the electro-hydraulic actuator are respectively hinged to the first push connection seat and the second push connection seat; a push motor is connected to the electro-hydraulic actuator.

4. The transverse swing lifting air blowing slag removal device as described in claim 1, characterized in that, The lifting drive structure includes a second reduction motor, a drive chain structure is connected to the second reduction motor, and the lifting vehicle is connected to the drive chain structure.

5. The transverse swing lifting air blowing slag removal device as described in claim 4, characterized in that, The drive chain structure includes a main sprocket, an upper sprocket, and a lower sprocket. The main sprocket is connected to the second reduction motor. The upper sprocket and the lower sprocket are hinged to the support frame body. The main sprocket and the upper sprocket are connected by a first chain. The upper sprocket and the lower sprocket are connected by a second chain. The lifting vehicle is connected to the second chain. The second geared motor drives the main sprocket to rotate, which in turn drives the upper sprocket to rotate via the first chain. The rotation of the upper sprocket drives the second chain to move, thereby causing the lifting vehicle connected to it to move up and down.

6. The transverse swing lifting air blowing slag removal device as described in claim 5, characterized in that, An encoder is coaxially mounted on the upper sprocket. The encoder is used to detect the number of rotations of the upper sprocket to control the moving distance of the lifting vehicle.

7. The transverse swing lifting air blowing slag removal device as described in claim 1, characterized in that, The support frame body is provided with a lifting guide rail, and the lifting vehicle is provided with a lifting roller, which can move along the lifting guide rail.

8. The transverse swing lifting air blowing slag removal device as described in claim 1, characterized in that, The slag-driving head structure includes a main body, a slag-driving head, and a clamp. The slag-driving head is connected to the main body through the clamp, and the main body is fixedly connected to the lifting vehicle.

9. A molten iron pretreatment system, characterized in that, The device includes a molten iron ladle, a slag remover, a stirring device, a stirring head replacement cart, and a transverse swing lifting air-blowing slag-removing device as described in any one of claims 1 to 8. The transverse structure and the swing drive structure of the transverse swing lifting air-blowing slag-removing device are located above the stirring head replacement cart. The molten iron ladle, the slag remover, and the stirring head replacement cart are arranged from bottom to top. The slag-removing head structure of the transverse swing lifting air-blowing slag-removing device can be raised and lowered along the support frame body to insert into or leave the molten iron ladle. The transverse swing lifting air-blowing slag-removing device can move laterally under the drive of the transverse car to alternately occupy the working position with the stirring head replacement cart.

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