A layered slag furnace

Abstract

The present invention relates to a layered slag furnace, and in particular to the technical field of continuous casting equipment, including a slab crystallizer, and also including a slag storage box for storing protective slag, wherein the slag storage box is arranged on a bottom plate, and a support for raising the height of the slag storage box is arranged on the bottom plate, and a feeding pipe is arranged at the discharge end of the slag storage box, and the other end of the feeding pipe extends to the upper end of the slab crystallizer. In this scheme, a first motor and a second motor are arranged, and the first motor is used to drive one end of the feeding pipe to move longitudinally at the feeding position of the slab crystallizer, and after moving longitudinally for a certain distance, the driving device drives the transverse block to move transversely, and the width of the transverse material spreading of the feeding pipe can be adjusted by moving the regulating block, so that one end of the feeding pipe can feed slab crystallizers of different lengths or widths, and uneven feeding will not occur in the later stage of feeding.

Description

Technical Field

[0001] The invention relates to the technical field of continuous casting equipment, and in particular to a layered slag furnace. Background Art

[0002] Adding protective slag to the continuous casting mold is a key metallurgical step, which aims to isolate the liquid steel from the air, prevent the molten steel from being re-oxidized, and absorb non-metallic inclusions in the molten steel to improve the quality of the ingot.

[0003] Modern continuous casting machines generally use an automatic continuous slag feeding system. This system controls the amount of mold slag added through metering equipment, and evenly adds mold slag particles into the narrow gap of the crystallizer, located above the liquid steel, at a constant speed.

[0004] In the existing method, during the feeding process, the size of the slab crystallizer carrying the molten steel may be different. During the process of adding protective slag, the coverage width of the feeding is not in a positive integer ratio with the width of the slab crystallizer, which will cause uneven feeding in the later stage of feeding (the feeding will be too thin or too thick at the end of feeding). Also, during feeding, since the protective slag is in powder form, a large amount of powder will be dispersed into the air.

[0005] In view of the above situation, a layered slag furnace is proposed. Summary of the invention

[0006] In order to solve the above problems, an embodiment of the present invention provides a layered slag furnace, which solves the problem of uneven charging in the late stage of charging slab crystallizers of different sizes proposed in the background art.

[0007] In order to achieve the above-mentioned purpose, the embodiment of the present invention specifically adopts the following technical scheme: a layered slag furnace, comprising a slab crystallizer, and also comprising a slag storage box for storing protective slag, wherein the slag storage box is arranged on a bottom plate, and a support for raising the height of the slag storage box is arranged on the bottom plate, and a feeding pipe is arranged at the discharge end of the slag storage box, and the other end of the feeding pipe extends to the upper end of the slab crystallizer;

[0008] The support is connected with a transverse shaft and a limit shaft, and a material spreading mechanism is provided on the transverse shaft and the limit shaft. One end of the feeding pipe located at the upper end of the slab crystallizer is connected to the material spreading mechanism, and the material spreading mechanism is used to adapt to slab crystallizers of different sizes;

[0009] The material spreading mechanism includes a transverse block, a support frame is provided above the transverse block, a regulating frame for adjusting the distance is connected to the support frame, a limiting frame is connected to the side wall of the transverse block through a telescopic rod, the regulating frame and the limiting frame cooperate to adjust the lateral spacing of the material spreading to adapt to slab crystallizers of different sizes, a material guide block is provided at the bottom of the limiting frame, a feeding pipe passes through the material guide block and the discharge end of the feeding pipe is arranged toward the lower end.

[0010] Furthermore, a first motor is provided on the pillar, an output end of the first motor is fixedly connected to a longitudinal shaft, and an outer surface of the longitudinal shaft is threadedly connected to a longitudinal block;

[0011] A driving device is arranged in the longitudinal block, and the output end of the driving device is connected to one end of the transverse shaft. The driving device can drive the transverse shaft to rotate in the forward or reverse direction. The limiting shaft is connected to the longitudinal block and is arranged parallel to the transverse shaft.

[0012] Furthermore, a support plate is slidably connected to the pillar, and the support plate is used to support the transverse axis and the limit axis. The sliding direction of the support plate is consistent with the setting direction of the longitudinal axis. The transverse axis and the limit axis both pass through the support plate and are rotatably connected to the support plate.

[0013] Furthermore, a storage chamber for storing protective slag is provided in the slag storage box, the top and bottom of the storage chamber are respectively a feeding port and a discharging port, the storage chamber is arranged in an inverted cone manner, and a sealing plate is hingedly connected at the feeding port of the storage chamber, and a conveying device is provided at the discharging port, which can be a screw conveyor, and the conveying device can convey the protective slag into the feeding pipe.

[0014] Furthermore, the transverse movement block is slidably connected to the limit shaft, and the sliding direction moves in the setting direction of the limit shaft. The transverse movement block is also threadedly connected to the transverse shaft.

[0015] Furthermore, a second motor is fixedly connected to the support frame, an output end of the second motor is fixedly connected to a regulating shaft, a bottom end of the regulating shaft is fixedly connected to a regulating frame, a torsion shaft is rotatably connected to the regulating frame, the torsion shaft extends outside the regulating frame, a regulating block is slidably connected to an inner side wall of the regulating frame, and the regulating block is threadedly connected to the torsion shaft;

[0016] The bottom of the regulating block is connected with an active block, and the active block is slidably connected to the inner side wall of the limiting frame. The position of the active block in the limiting frame is adjusted by adjusting the position of the regulating block.

[0017] Furthermore, the bottom of the material guide block is connected with a push plate through a telescopic rod, the push plate is connected to the outer side wall of the feeding pipe near the bottom end, and a reset spring is also provided between the push plate and the material guide block.

[0018] Furthermore, a pushing shaft is rotatably connected to the bottom of the support frame, a centrifugal disc is fixedly connected to the outer wall of the pushing shaft, a moving groove is provided at the bottom of the centrifugal disc, a centrifugal block is slidably connected in the moving groove, a centrifugal spring is provided between the centrifugal block and the inner wall of the moving groove, a counterweight block is fixedly connected to the bottom of the centrifugal block, a lowering disc is slidably connected to the outer wall of the pushing shaft, the lowering disc and the counterweight block are connected by a transmission rod, both ends of the transmission rod are rotatably connected to the counterweight block and the lowering disc respectively, and a plurality of oscillation blocks are connected to the bottom of the lowering disc;

[0019] A downward pressing rod is fixedly connected to the side wall of the pushing plate, and the downward pressing rod extends below the downward moving disc, and the downward moving disc can drive the downward pressing rod to move downward;

[0020] A synchronously driven transmission belt is arranged between the pushing shaft and the regulating shaft, and when the regulating shaft rotates, the pushing shaft is driven to rotate through the transmission belt.

[0021] The beneficial effects of the embodiments of the present invention are:

[0022] 1. This scheme sets up a first motor and a second motor. The first motor drives one end of the feeding pipe to move longitudinally at the feeding position of the slab crystallizer, and then drives the transverse block to move laterally after moving longitudinally for a distance. The width of the lateral material spreading of the feeding pipe can be adjusted by moving the regulating block, so that one end of the feeding pipe can feed slab crystallizers of different lengths or widths, and uneven feeding will not occur in the later stage of feeding.

[0023] 2. This solution provides a centrifugal disc and multiple vibration blocks, which can make the discharge end of the feeding pipe vibrate slightly while adding protective slag to the feeding pipe, so that the discharge end of the feeding pipe will not be blocked by protective slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the position of the support frame of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the material spreading mechanism of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the control frame and the limiting frame of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the centrifugal disc and the downward moving disc of the present invention;

[0029] Figure 6 A cross-sectional view of a slag storage box of the present invention;

[0030] Figure 7 It is a schematic diagram of the moving path of the material spreading mechanism of the present invention.

[0031] In the figure: 1. bottom plate; 2. slab crystallizer; 3. slag storage box; 4. sealing plate; 5. pillar; 6. conveying device; 7. feeding pipe; 8. first motor; 9. longitudinal axis; 10. support plate; 11. limit axis; 12. transverse axis; 13. transverse block; 14. support frame; 15. second motor; 16. regulating axis; 17. pushing axis; 18. limiting frame; 19. guide block; 20. pushing plate; 21. centrifugal disc; 22. lowering disc; 23. transmission belt; 24. regulating frame; 25. torsion axis; 26. regulating block; 27. active block; 28. reset spring; 29. ​​centrifugal block; 30. centrifugal spring; 31. transmission rod; 32. oscillation block; 33. counterweight block. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0033] Example 1

[0034] See also Figure 1-7 A layered slag furnace includes a slab crystallizer 2 and a slag storage box 3 for storing protective slag. The slag storage box 3 is arranged on a bottom plate 1, and a support 5 for raising the height of the slag storage box 3 is arranged on the bottom plate 1. A feeding pipe 7 (which is the feeding end of the feeding pipe 7) is arranged at the discharge end of the slag storage box 3, and the other end of the feeding pipe 7 extends to the upper end of the slab crystallizer 2 (which is the discharge end of the feeding pipe 7). The support 5 is used to support the slag storage box 3 and to raise the height of the slag storage box 3, so that the height of the slag storage box 3 is higher than the height of the discharge end of the feeding pipe 7, so that the feeding pipe 7 is not easy to accumulate too much protective slag inside after use, and the feeding pipe 7 is arranged in a retractable hose shape to adapt to the change of distance during the feeding process.

[0035] A storage chamber for storing protective slag is provided in the slag storage box 3, and the top and bottom of the storage chamber are a feeding port and a discharging port respectively. The storage chamber is arranged in an inverted cone manner, and a sealing plate 4 is hingedly connected at the feeding port of the storage chamber, and a conveying device 6 is provided at the discharging port. The conveying device 6 can be a screw conveyor, and the conveying device 6 can convey the protective slag to the feeding pipe 7.

[0036] See attached Figure 6The protective slag moves to the conveying device 6 at the lower end by its own gravity, and then is pushed into the feeding pipe 7 by the conveying device 6. The sealing plate 4 can isolate the external water vapor and impurities so that they will not affect the characteristics of the protective slag.

[0037] The support 5 is connected with a transverse shaft 12 and a limit shaft 11. A material spreading mechanism is provided on the transverse shaft 12 and the limit shaft 11. One end of the feeding pipe 7 located above the slab crystallizer 2 (the end is the discharge end of the feeding pipe 7) is connected with the material spreading mechanism. The material spreading mechanism is used to adapt to slab crystallizers 2 of different sizes. The transverse block 13 is slidably connected with the limit shaft 11, and the sliding direction moves in the setting direction of the limit shaft 11. The transverse block 13 is also threadedly connected with the transverse shaft 12. (With Figure 2 (as a reference view) when the transverse shaft 12 rotates, the transverse block 13 is driven to move in the front-rear direction above the slab crystallizer 2 through the action of the thread, and the limit shaft 11 serves to limit the transverse block 13, so that the transverse block 13 can only move along the setting direction of the limit shaft 11.

[0038] A first motor 8 is provided on the pillar 5, and the output end of the first motor 8 is fixedly connected to a longitudinal shaft 9, and the outer surface of the longitudinal shaft 9 is threadedly connected to a longitudinal block; the first motor 8 drives the longitudinal shaft 9 to rotate forward or reverse, thereby driving the longitudinal block to move in the left and right directions.

[0039] A driving device (not shown in the figure) is provided in the longitudinal block, and the output end of the driving device is connected to one end of the transverse shaft 12. The driving device can drive the transverse shaft 12 to rotate forward or reverse. The limit shaft 11 is connected to the longitudinal block and is arranged parallel to the transverse shaft 12.

[0040] A support plate 10 is slidably connected to the pillar 5, and the support plate 10 is used to support the transverse axis 12 and the limit axis 11. The sliding direction of the support plate 10 is consistent with the setting direction of the longitudinal axis 9. The transverse axis 12 and the limit axis 11 both pass through the support plate 10 and are rotatably connected to the support plate 10. The support plate 10 is used to support the transverse axis 12 and the limit axis 11.

[0041] The material spreading mechanism includes a transverse block 13, a support frame 14 is provided above the transverse block 13, a regulating frame 24 for adjusting the distance is connected to the support frame 14, a limiting frame 18 is connected to the side wall of the transverse block 13 through a telescopic rod, the regulating frame 24 and the limiting frame 18 cooperate to adjust the lateral spacing of the material spreading to adapt to slab crystallizers 2 of different sizes, a guide block 19 is provided at the bottom of the limiting frame 18, the feeding tube 7 passes through the guide block 19 and the discharge end of the feeding tube 7 is arranged toward the lower end. A push plate 20 is connected to the bottom of the guide block 19 through a telescopic rod, the push plate 20 is connected to the outer side wall of the feeding tube 7 near the bottom end, and a reset spring 28 is also provided between the push plate 20 and the guide block 19.

[0042] The support frame 14 is fixedly connected with a second motor 15, and the output end of the second motor 15 is fixedly connected with a regulating shaft 16, and the bottom end of the regulating shaft 16 is fixedly connected with a regulating frame 24, and a torsion shaft 25 is rotatably connected with the regulating frame 24, and the torsion shaft 25 extends outward from the regulating frame 24, and a regulating block 26 is slidably connected with the inner side wall of the regulating frame 24, and the regulating block 26 and the torsion shaft 25 are threadedly connected;

[0043] The bottom of the regulating block 26 is connected to an active block 27 , and the active block 27 is slidably connected to the inner wall of the limiting frame 18 . The position of the active block 27 in the limiting frame 18 is adjusted by adjusting the position of the regulating block 26 .

[0044] First, the width of the slab crystallizer 2 to which material needs to be fed is measured, and then the regulating block 26 and the active block 27 are driven to move manually or by a motor. This method is set to adjust the position of the active block 27 in the limiting frame 18, wherein the lateral distance between the regulating shaft 16 and the regulating block 26 is the distance when the limiting frame 18 moves laterally. By adjusting the distance of the lateral movement of the limiting frame 18 so that the distance is an integer multiple of the width of the slab crystallizer 2, the material spreading distance can correspond to the slab crystallizer 2 in the later stage of feeding, thereby achieving the effect of uniform feeding.

[0045] The specific operation method of the material spreading mechanism is: after the distance of the regulating block 26 is adjusted (a scale can be set on the regulating frame 24 to facilitate observation by the operator), the protective slag is added into the slab crystallizer 2 through the feeding pipe 7. At this time, by operating the second motor 15, the regulating frame 24 is rotated under the action of the second motor 15, and the active block 27 will rotate synchronously with the regulating block 26. The lateral movement of the active block 27 when it rotates will drive the limiting frame 18 to move horizontally repeatedly. The specific material spreading path can be referred to Figure 7 The dotted line path and the arrow are the moving paths of the material spreading mechanism.

[0046] Example 2

[0047] The bottom of the support frame 14 is rotatably connected with a push shaft 17, and a centrifugal disc 21 is fixedly connected to the outer wall of the push shaft 17. A moving groove is provided at the bottom of the centrifugal disc 21, and a centrifugal block 29 is slidably connected in the moving groove. A centrifugal spring 30 is provided between the centrifugal block 29 and the inner wall of the moving groove. A counterweight block 33 is fixedly connected to the bottom of the centrifugal block 29, and a lowering disc 22 is slidably connected to the outer wall of the push shaft 17. The lowering disc 22 and the counterweight block 33 are connected through a transmission rod 31, and the two ends of the transmission rod 31 are rotatably connected to the counterweight block 33 and the lowering disc 22, respectively. A plurality of oscillation blocks 32 are connected to the bottom of the lowering disc 22;

[0048] A pressing rod is fixedly connected to the side wall of the pushing plate 20, and the pressing rod extends below the downward moving disc 22. The downward moving disc 22 can drive the pressing rod to move downward.

[0049] A synchronously driven transmission belt 23 is provided between the pushing shaft 17 and the regulating shaft 16 . When the regulating shaft 16 rotates, the pushing shaft 17 is driven to rotate through the transmission belt 23 .

[0050] During the material spreading process, the regulating shaft 16 will also drive the pushing shaft 17 to rotate through the transmission belt 23. When the pushing shaft 17 rotates, it drives the centrifugal disc 21 and the downward disc 22 to rotate synchronously. When the centrifugal disc 21 rotates, the counterweight block 33 arranged at its lower end moves toward the edge of the centrifugal disc 21 under the action of centrifugal force. At this time, the centrifugal spring 30 will also be compressed. The movement of the counterweight block 33 will also drive the centrifugal disc 21 to move downward through the transmission rod 31. During the downward movement of the centrifugal disc 21, the pushing plate 20 is driven to move downward synchronously. The downward movement of the pushing plate 20 causes the discharge end of the feeding pipe 7 to move toward the direction of the slab crystallizer 2, thereby reducing the feeding distance and preventing the feeding pipe 7 from being too high and the protective slag from being dispersed into the air and raising dust during the falling process.

[0051] The plurality of vibration blocks 32 disposed at the bottom of the centrifugal disc 21 will cause the push plate 20 to vibrate slightly, thereby making the material discharge smooth and reducing the blockage of the material discharge end of the feeding pipe 7. The reset spring 28 is disposed, and when the material is stopped, the push plate 20 will be reset under the action of the reset spring 28.

[0052] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0053] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0055] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A layered slag furnace, comprising a slab crystallizer (2), characterized in that: It also includes a slag storage box (3) for storing mold slag, the slag storage box (3) is arranged on the bottom plate (1), the bottom plate (1) is provided with a support (5) for raising the height of the slag storage box (3), a feeding pipe (7) is provided at the discharge end of the slag storage box (3), and the other end of the feeding pipe (7) extends to the upper end of the slab crystallizer (2); The support (5) is connected to a transverse shaft (12) and a limiting shaft (11), and a material spreading mechanism is provided on the transverse shaft (12) and the limiting shaft (11), and one end of a feeding pipe (7) located at the upper end of the slab crystallizer (2) is connected to the material spreading mechanism, and the material spreading mechanism is used to adapt to slab crystallizers (2) of different sizes; The material spreading mechanism comprises a transverse moving block (13), a support frame (14) is provided above the transverse moving block (13), a regulating frame (24) for adjusting the distance is connected to the support frame (14), a limiting frame (18) is connected to the side wall of the transverse moving block (13) via a telescopic rod, the regulating frame (24) and the limiting frame (18) cooperate to adjust the transverse spacing of the material spreading to adapt to slab crystallizers (2) of different sizes, a material guide block (19) is provided at the bottom of the limiting frame (18), a feeding pipe (7) passes through the material guide block (19) and the material discharge end of the feeding pipe (7) is arranged toward the lower end.

2. A layered slag furnace according to claim 1, characterized in that: A first motor (8) is provided on the support column (5); an output end of the first motor (8) is fixedly connected to a longitudinal shaft (9); and an outer surface of the longitudinal shaft (9) is threadedly connected to a longitudinal block; A driving device is provided in the longitudinal block, the output end of the driving device is connected to one end of the transverse shaft (12), and the driving device can drive the transverse shaft (12) to rotate in the forward or reverse direction. The limiting shaft (11) is connected to the longitudinal block and is arranged parallel to the transverse shaft (12).

3. A layered slag furnace according to claim 2, characterized in that: A support plate (10) is slidably connected to the support column (5), and the support plate (10) is used to support the transverse axis (12) and the limiting axis (11). The sliding direction of the support plate (10) is consistent with the setting direction of the longitudinal axis (9). The transverse axis (12) and the limiting axis (11) both pass through the support plate (10) and are rotatably connected to the support plate (10).

4. The layered slag furnace according to claim 1, characterized in that: A storage chamber for storing protective slag is provided in the slag storage box (3), the top and bottom of the storage chamber are respectively a feeding port and a discharging port, the storage chamber is arranged in an inverted truncated cone manner, and a sealing plate (4) is hingedly connected at the feeding port of the storage chamber, and a conveying device (6) is provided at the discharging port, and the conveying device (6) can be a screw conveyor, and the conveying device (6) can convey the protective slag to the feeding pipe (7).

5. The layered slag furnace according to claim 1, characterized in that: The lateral movement block (13) is slidably connected to the limiting shaft (11), and the sliding direction is the same as the setting direction of the limiting shaft (11). The lateral movement block (13) is also threadedly connected to the transverse shaft (12).

6. The layered slag furnace according to claim 1, characterized in that: A second motor (15) is fixedly connected to the support frame (14); an output end of the second motor (15) is fixedly connected to a regulating shaft (16); a bottom end of the regulating shaft (16) is fixedly connected to a regulating frame (24); a torsion shaft (25) is rotatably connected to the regulating frame (24); the torsion shaft (25) extends outward from the regulating frame (24); a regulating block (26) is slidably connected to an inner side wall of the regulating frame (24); and the regulating block (26) and the torsion shaft (25) are threadedly connected; The bottom of the regulating block (26) is connected to an active block (27), and the active block (27) is slidably connected to the inner wall of the limiting frame (18). The position of the active block (27) in the limiting frame (18) is adjusted by adjusting the position of the regulating block (26).

7. The layered slag furnace according to claim 1, characterized in that: The bottom of the material guide block (19) is connected to a push plate (20) via a telescopic rod. The push plate (20) is connected to the outer wall of the feeding pipe (7) near the bottom end. A return spring (28) is also provided between the push plate (20) and the material guide block (19).

8. The layered slag furnace according to claim 7, characterized in that: The bottom of the support frame (14) is rotatably connected to a push shaft (17), the outer wall of the push shaft (17) is fixedly connected to a centrifugal disc (21), a movable groove is provided at the bottom of the centrifugal disc (21), a centrifugal block (29) is slidably connected in the movable groove, a centrifugal spring (30) is provided between the centrifugal block (29) and the inner wall of the movable groove, a counterweight block (33) is fixedly connected to the bottom of the centrifugal block (29), the outer wall of the push shaft (17) is slidably connected to a downward disk (22), the downward disk (22) and the counterweight block (33) are connected via a transmission rod (31), the two ends of the transmission rod (31) are respectively rotatably connected to the counterweight block (33) and the downward disk (22), and a plurality of oscillating blocks (32) are connected to the bottom of the downward disk (22); A downward pressing rod is fixedly connected to the side wall of the pushing plate (20), and the downward pressing rod extends below the downward moving disc (22). The downward moving disc (22) can drive the downward pressing rod to move downward; A synchronously driven transmission belt (23) is provided between the pushing shaft (17) and the regulating shaft (16); when the regulating shaft (16) rotates, the pushing shaft (17) is driven to rotate via the transmission belt (23).

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