Single-tube material distributor for automatic slag feeding system of continuous casting machine

Abstract

The present invention discloses a single-tube material distribution device for the automatic protection slag adding system of a continuous casting machine, comprising a discharge pipe, a distribution bucket, a support mechanism, a fixed base, a sliding base, and a positioning mechanism; the inlet end of the discharge pipe is connected to the protection slag conveying device, and the outlet end is connected to the distribution bucket, the discharge pipe and the distribution bucket have a downward slope, the discharge pipe is fixed to the sliding base through the support mechanism, the fixed base is arranged on one side of the crystallizer, and the sliding base is detachably fixed to the fixed base through the positioning mechanism; the distribution bucket comprises a bottom plate and an outer baffle and an inner baffle fixed on the bottom plate, the two sides of the bottom plate protrude forward, a slag inlet is provided on the outer baffle, the discharge pipe is fixed on the slag inlet, the outer baffle is arranged along the periphery of the bottom plate, and the inner baffle is distributed in the middle of the bottom plate and the protruding positions on both sides. The advantages of the present invention are: multiple slag adding channels are provided, and the principle of "frequent addition, less addition and uniform addition" can be more followed when adding protection slag.

Description

Technical Field

[0001] The invention relates to a material dividing device, in particular to a single-tube material dividing device used for an automatic protective slag adding system of a continuous casting machine, belonging to the technical field of metallurgical manufacturing. Background Art

[0002] Continuous casting is one of the core process links of steelmaking. Molten steel flows into the continuous casting machine for straightening and forming after passing through the ladle, tundish, submerged nozzle and crystallizer in sequence. At present, in order to improve the quality of finished steel billets, it is usually necessary to evenly lay protective slag on the surface of the molten steel in the crystallizer to achieve the following purposes: 1. Insulate and prevent heat dissipation; 2. Separate the air to prevent oxygen in the air from entering the molten steel and causing secondary oxidation that affects the quality of the steel; 3. Absorb and dissolve the inclusions that float from the molten steel to the slag interface to purify the molten steel.

[0003] In order to achieve good use effect of protective slag for small square billet products, it is usually added from the four sides of the submerged nozzle and follow the principle of "frequent addition, small addition and uniform addition" to ensure that the addition speed and consumption speed of the slag layer meet the corresponding requirements, and avoid quality defects of the billet caused by too thick or too thin slag layer.

[0004] In the prior art, the work of adding protective slag is done manually, and the amount of protective slag added is also completely controlled by manual experience. Since the protective slag adding process has strict requirements, it brings great pressure to the pouring work of the caster in the continuous casting. Frequent addition of protective slag to each crystallizer greatly increases the labor intensity of the workers. In addition, the manual addition of protective slag is affected by factors such as the workers' sense of responsibility, and the quality of the added slag is also difficult to guarantee, which will ultimately directly affect the quality of the continuous casting billet and even the steel product. Summary of the invention

[0005] Purpose of the invention: In view of the above problems, the purpose of the present invention is to provide a single-tube material distribution device for the automatic protection slag adding system of a continuous casting machine, so as to realize the automatic and uniform addition of protection slag around the submerged nozzle.

[0006] Technical solution: A single-tube material distribution device for the automatic protection slag adding system of a continuous casting machine, comprising a discharging pipe, a discharging bucket, a supporting mechanism, a fixed base, a sliding base, and a positioning mechanism; the inlet end of the discharging pipe is connected to the protection slag conveying device, and the outlet end is connected to the discharging bucket, the discharging pipe and the discharging bucket have a downward slope, the discharging pipe is fixed to the sliding base through the supporting mechanism, the fixed base is arranged on one side of the crystallizer, and the sliding base is detachably mounted and fixed to the fixed base through the positioning mechanism; the discharging bucket comprises a bottom plate and a bottom plate fixed to the bottom plate. The outer baffle plate and the inner baffle plate on the bottom plate, the two sides of the bottom plate protrude forward so as to protrude into the two side positions of the submerged water inlet when adding slag, the outer baffle plate is provided with a slag inlet, the discharge pipe is fixed on the slag inlet, the outer baffle plate is arranged along the periphery of the bottom plate, the inner baffle plate is distributed in the middle part and the protruding positions on both sides of the bottom plate, the bottom plate is divided into a plurality of slag adding channels by the outer baffle plate and the inner baffle plate, the inlet end of the slag adding channel is connected to the discharge pipe, and the outlet end is distributed in the middle part and the protruding positions on both sides of the bottom plate, so as to realize uniform slag adding around the submerged water inlet.

[0007] The principle of the present invention is that when the material distribution device is installed, the fixed base and the sliding base adopt a detachable plug-in structure, which is convenient for the overall installation positioning and disassembly and separation of the material distribution device. When adding protective slag, the protective slag flows into the discharge pipe through the silo and then flows into the material distribution bucket. Through the slag adding channels distributed in the middle of the bottom plate of the material distribution bucket and the protruding positions on both sides, the slag is evenly added to the surrounding of the submerged water inlet, providing a basis for less-managed or unmanned slag adding, and at the same time more in accordance with the slag adding principle of "frequent addition, less addition and uniform addition".

[0008] Furthermore, the inner baffle plate includes a left main plate and a right main plate arranged in an "eight" shape, the front ends of the left main plate and the right main plate converge to the outlet of the discharge pipe, and the rear ends extend into the two sides of the bottom plate respectively. The left main plate cooperates with the outer baffle plate to form a left slag adding channel, the right main plate cooperates with the outer baffle plate to form a right slag adding channel, and a middle slag adding channel is formed between the left main plate and the right main plate. In this structure, the slag adding channel is divided into three branches: left, middle, and right, so as to achieve uniform slag adding around the submerged nozzle.

[0009] Furthermore, the inner baffle plate further comprises a V-shaped plate, which is fixed between the left main plate and the right main plate to divide the middle slag adding channel into two parts. In this structure, by dividing the middle slag adding channel into two parts, uniform slag adding around the submerged nozzle can be further achieved.

[0010] Furthermore, the inner baffle plate further comprises a plurality of inclined plates, which are arranged at the protruding positions on both sides of the bottom plate to divide the left slag adding channel and the right slag adding channel into multiple branches. In this structure, by dividing the left slag adding channel and the right slag adding channel into multiple branches, uniform slag adding around the submerged nozzle can be further achieved.

[0011] Furthermore, the material dividing bucket has a bilaterally symmetrical structure.

[0012] Preferably, the positioning mechanism includes a positioning slot plate, a hook seat, and a hook. The positioning slot plate is relatively installed on the fixed base to form a slide slot structure. The slide slot structure matches the sliding base to form lateral positioning. The hook seat is fixed on the positioning slot plate. The hook is rotated and fixed to the hook seat by a first rotating shaft. The sliding base is provided with a slot aligned with the hook, and the hook is inserted into the slot to form longitudinal positioning.

[0013] Furthermore, the support mechanism includes a support vertical rod, a support oblique rod, a support slot plate, and a first positioning pin. The bottom of the support vertical rod is connected to the sliding base, and the top is connected to the discharge pipe through a second rotating shaft. The support slot plate is fixed to the support vertical rod, and a long vertical slot is provided in the middle, and an oblique slot connected to the long vertical slot is provided at the upper end. The first positioning pin is installed in the long vertical slot, and moves along the long vertical slot and can be inserted into the oblique slot. The upper end of the support oblique rod is connected to the discharge pipe through a third rotating shaft, and the lower end is fixedly connected to the first positioning pin. When the first positioning pin is inserted into the oblique slot, the discharge pipe and the material distribution bucket have a downward slope to facilitate slag addition. When the first positioning pin slides to the bottom of the long vertical slot, the discharge pipe and the material distribution bucket are folded and stowed. In this structure, through the connecting rod structure, while playing a supporting role, the discharge pipe and the material distribution bucket can also be folded and stowed, which is convenient for installation, maintenance and disassembly.

[0014] Furthermore, the support mechanism also includes a support ear seat, a second positioning pin, and a third positioning pin. The support ear seat is fixed on the sliding base, with a short vertical slot in the middle and a bayonet at the top. The second positioning pin and the third positioning pin are arranged vertically and fixed at the bottom of the support vertical rod. The second positioning pin is installed in the short vertical slot and slides along it, and the third positioning pin is aligned with the bayonet; the second positioning pin moves down along the short vertical slot, and the third positioning pin is snapped into the bayonet to be fixed; the second positioning pin moves up along the short vertical slot, and the third positioning pin is disengaged from the bayonet to allow the support mechanism to rotate and lay flat. In this structure, the overall folding of the single-tube material distributing device can be further realized, which is convenient for the installation, maintenance and disassembly of the single-tube material distributing device, and also convenient for daily maintenance of the position of the submerged water outlet.

[0015] Beneficial effects: Compared with the prior art, the advantages of the present invention are: 1. Multiple slag adding channels are provided, so that the principle of "frequent addition, small addition and uniform addition" can be better followed when adding protective slag; 2. The device can be folded as a whole, which is convenient for its own installation and maintenance, and also convenient for workers to perform daily maintenance of the immersion nozzle; 3. The device adopts a detachable plug-in structure, which is plug-and-play, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0017] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0018] Figure 3 is a side view of the present invention;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the material dividing bucket;

[0020] Figure 5 It is a top view of the material dividing bucket;

[0021] Figure 6 for Figure 1 A magnified schematic diagram of position A in the middle;

[0022] Figure 7 for Figure 3 A magnified schematic diagram of position B in the middle;

[0023] Figure 8 for Figure 3 Enlarged schematic diagram of the C position in the middle. DETAILED DESCRIPTION

[0024] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. These embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0025] A single-tube material distribution device for the automatic protection slag system of a continuous casting machine, as shown in the attached Figures 1 to 3 As shown, it includes a discharge pipe 1, a material distribution bucket 2, a support mechanism 3, a fixed base 4, a sliding base 5, and a positioning mechanism 6.

[0026] The inlet end of the discharge pipe 1 is connected to the protective slag conveying device, and the outlet end is connected to the material distribution bucket 2. The discharge pipe 1 and the material distribution bucket 2 have a downward slope. The discharge pipe 1 is fixed to the sliding base 5 through the supporting mechanism 3. The fixed base 4 is arranged on one side of the crystallizer. The sliding base 5 is detachably installed and fixed to the fixed base 4 through the positioning mechanism 6; as shown in the attached Figure 4As shown, the material dividing bucket 2 includes a bottom plate 21 and an outer baffle plate 22 and an inner baffle plate 23 fixed on the bottom plate 21. The two sides of the bottom plate 21 protrude forward so as to protrude into the two side positions of the submerged water inlet when adding slag. A slag inlet 22a is provided on the outer baffle plate 22, and the discharge pipe 1 is fixed on the slag inlet 22a. The outer baffle plate 22 is arranged along the periphery of the bottom plate 21, and the inner baffle plates 23 are distributed in the middle part and the protruding positions on both sides of the bottom plate 21. The bottom plate 21 is divided into a plurality of slag adding channels by the outer baffle plate 22 and the inner baffle plate 23. The inlet end of the slag adding channel is connected to the discharge pipe 1, and the outlet end is distributed in the middle part and the protruding positions on both sides of the bottom plate 21, so as to realize uniform slag adding around the submerged water inlet.

[0027] In this embodiment, in order to facilitate the principle of "adding frequently, adding less and adding evenly" when adding slag, as shown in the attached Figure 4 , 5 As shown, the inner baffle plate 23 specifically includes a left main plate 23a, a right main plate 23b, a V-shaped plate 23c, and an inclined plate 23d. The left main plate 23a and the right main plate 23b are arranged in an "eight" shape, with the front ends converging to the outlet of the discharge pipe 1 and the rear ends extending into the protruding positions on both sides of the bottom plate 21. The left main plate 23a cooperates with the outer baffle plate 22 to form a left slag flow channel a, and the right main plate 23b cooperates with the outer baffle plate 22 to form a right slag flow channel b. A middle slag flow channel c is formed between the left main plate 23a and the right main plate 23b. The V-shaped plate 23c is fixed between the left main plate 23a and the right main plate 23b to divide the middle slag flow channel c into two strands. The inclined plate 23d has multiple pieces, and they are arranged at the protruding positions on both sides of the bottom plate 21 to divide the left slag flow channel a and the right slag flow channel b into multiple strands.

[0028] In this embodiment, in order to keep the slag addition amount on both sides of the submerged nozzle synchronous, the material dividing bucket 2 preferably adopts a left-right symmetrical structure.

[0029] In this embodiment, as shown in the attached Figure 8 As shown, the positioning mechanism 6 specifically includes a positioning slot plate 61, a hook seat 62, and a hook 63. The positioning slot plate 61 is relatively mounted on the fixed base 4 to form a slide groove structure. The slide groove structure matches the sliding base 5 to form a horizontal positioning. The hook seat 62 is fixed on the positioning slot plate 61. The hook 63 is rotatably fixed on the hook seat 62 through a first rotating shaft 64. The sliding base 5 is provided with a slot 51 aligned with the hook 63. The hook 63 is inserted into the slot 51 to form a longitudinal positioning. In this embodiment, the positioning slot plate 61 preferably adopts a "Z"-shaped structure, and is provided with two pieces, and the openings are relatively formed to form the above-mentioned slide groove structure.

[0030] In this embodiment, as shown in the attached Figure 3 , 6As shown in Figures 7 and 8, the support mechanism 3 specifically includes a support vertical rod 31, a support oblique rod 32, a support slot plate 33, a first positioning pin 34, a second rotating shaft 35, a third rotating shaft 36, a support ear seat 37, a second positioning pin 38, and a third positioning pin 39. The bottom of the support vertical rod 31 is connected to the sliding base 5, and the top is connected to the discharge pipe 1 through the second rotating shaft 35. The support slot plate 33 is fixed on the support vertical rod 31, and a long vertical groove 33a is opened in the middle, and an oblique groove 33b connected to the long vertical groove 33a is opened at the upper end. The first positioning pin 34 is installed in the long vertical groove 33a, and moves along the long vertical groove 33a and can be stuck in the oblique groove 33b. The upper end of the support oblique rod 32 is connected to the discharge pipe 1 through the third rotating shaft 36, and the lower end is fixedly connected to the first positioning pin 34. The supporting ear seat 37 is fixed on the sliding base 5, with a short vertical groove 37a in the middle and a bayonet 37b at the top. The third positioning pin 39 and the second positioning pin 38 are arranged vertically and fixed at the bottom of the supporting vertical rod 31. The second positioning pin 38 is installed in the short vertical groove 37a and slides along it. The third positioning pin 39 is aligned with the bayonet 37b.

[0031] When installing the single-tube material distribution device of this embodiment, first position and install the fixed base 4 on one side of the crystallizer, then install the sliding base 5 through the slide groove structure, and form a positioning through the cooperation of the hook 63 and the groove 51 to complete the installation of the bottom of the single-tube material distribution device. Then, rotate the support mechanism 3 to a vertical position so that the third positioning pin 39 is inserted into the bayonet 37b to complete the support and fixation of the support mechanism 3. After that, lift the material distribution bucket 2 and make the first positioning pin 34 slide upward along the long vertical groove 33a. When it slides to the inclined groove 33b, move the first positioning pin 34 so that it is inserted into the inclined groove 33b, and insert the material distribution bucket 2 into the submerged water outlet to complete the installation and fixation of the material distribution bucket 2. Finally, connect the inlet end of the discharge pipe 1 to the protective slag bin to complete the overall installation and fixation of the single-tube material distribution device.

[0032] During maintenance, lift the material distribution bucket 2, insert the first positioning pin 34 into the long vertical slot 33a, and put down the material distribution bucket 2. The first positioning pin 34 slides down along the long vertical slot 33a, and the discharge pipe 1 and the material distribution bucket 2 are retracted. After that, lift the support mechanism 3, the second positioning pin 38 moves up along the short vertical slot 37a, and the third positioning pin 39 is separated from the bayonet 37b. The support mechanism 3 is rotated and laid flat to facilitate the maintenance of the submerged nozzle and the single-tube material distribution device.

[0033] During disassembly, the hook 63 is pushed away from the slot 51 and the sliding base 5 is pulled out to complete the disassembly.

[0034] The single-tube material distributor of this embodiment is provided with multiple slag adding channels, which can better follow the principle of "frequent addition, small addition and uniform addition" when adding protective slag. At the same time, the device can be folded as a whole, which is convenient for its own installation and maintenance, and also convenient for workers to perform daily maintenance on the immersion nozzle. In addition, the device adopts a detachable plug-in structure, which is plug-and-play, saving time and effort.

Claims

1. A single-tube material distribution device for the automatic protection slag system of a continuous casting machine, characterized in that: The invention comprises a discharge pipe (1), a material distribution bucket (2), a support mechanism (3), a fixed base (4), a sliding base (5), and a positioning mechanism (6); the inlet end of the discharge pipe (1) is connected to a protective slag conveying device, and the outlet end is connected to the material distribution bucket (2); the discharge pipe (1) and the material distribution bucket (2) have a downward slope; the discharge pipe (1) is fixed to the sliding base (5) through the support mechanism (3); the fixed base (4) is arranged on one side of the crystallizer; the sliding base (5) is detachably mounted and fixed to the fixed base (4) through the positioning mechanism (6); the material distribution bucket (2) comprises a bottom plate (21) and an outer baffle (22) and an inner baffle (23) fixed to the bottom plate (21); the two sides of the bottom plate (21) protrude forward so that when slag is added, The outer baffle (22) is provided with a slag inlet (22a) extending into the two sides of the submerged water inlet. The discharge pipe (1) is fixed on the slag inlet (22a). The outer baffle (22) is arranged along the periphery of the bottom plate (21). The inner baffle (23) is distributed in the middle part and the protruding positions on both sides of the bottom plate (21). The bottom plate (21) is divided into a plurality of slag adding channels by the outer baffle (22) and the inner baffle (23). The inlet end of the slag adding channel is connected to the discharge pipe (1), and the outlet end is distributed in the middle part and the protruding positions on both sides of the bottom plate (21), so as to realize uniform slag adding around the submerged water inlet. The inner baffle (23) includes a left main plate (23a) and a right main plate (23b) arranged in an "eight" shape. The material dividing bucket (2) is a left-right symmetrical structure.

2. The device according to claim 1, characterized in that: The front ends of the left main board (23a) and the right main board (23b) converge at the outlet of the discharge pipe (1), and the rear ends extend into the two side protruding positions of the bottom plate (21) respectively; the left main board (23a) cooperates with the outer baffle plate (22) to form a left slag adding channel (a); the right main board (23b) cooperates with the outer baffle plate (22) to form a right slag adding channel (b); and a middle slag adding channel (c) is formed between the left main board (23a) and the right main board (23b).

3. The device according to claim 2, characterized in that: The inner baffle plate (23) further comprises a V-shaped plate (23c), and the V-shaped plate (23c) is fixed between the left main plate (23a) and the right main plate (23b) to divide the middle slag flow channel (c) into two parts.

4. The device according to claim 2, characterized in that: The inner baffle plate (23) further comprises a plurality of inclined plates (23d), wherein the plurality of inclined plates (23d) are arranged at the protruding positions on both sides of the bottom plate (21) to divide the left slag adding channel (a) and the right slag adding channel (b) into a plurality of branches.

5. The device according to claim 1, characterized in that: The positioning mechanism (6) comprises a positioning slot plate (61), a hook seat (62), and a hook (63); the positioning slot plate (61) is relatively mounted on the fixed base (4) to form a slide slot structure; the slide slot structure matches the sliding base (5) to form transverse positioning; the hook seat (62) is fixed on the positioning slot plate (61); the hook (63) is rotatably fixed on the hook seat (62) via a first rotating shaft (64); the sliding base (5) is provided with a slot (51) aligned with the hook (63); the hook (63) is inserted into the slot (51) to form longitudinal positioning.

6. The device according to claim 1, characterized in that: The support mechanism (3) comprises a support vertical rod (31), a support oblique rod (32), a support slot plate (33), and a first positioning pin (34). The bottom of the support vertical rod (31) is connected to the sliding base (5), and the top is connected to the discharge pipe (1) via a second rotating shaft (35). The support slot plate (33) is fixed on the support vertical rod (31), and a long vertical groove (33a) is provided in the middle, and an oblique groove (33b) connected to the long vertical groove (33a) is provided at the upper end. The first positioning pin (34) is installed in the long vertical groove (33 a), and moves along the long vertical slot (33a) and can be inserted into the inclined slot (33b); the upper end of the supporting inclined rod (32) is connected to the discharge pipe (1) through a third rotating shaft (36), and the lower end is fixedly connected to the first positioning pin (34); when the first positioning pin (34) is inserted into the inclined slot (33b), the discharge pipe (1) and the material distribution bucket (2) have a downward slope to facilitate slag addition; when the first positioning pin (34) slides to the bottom of the long vertical slot (33a), the discharge pipe (1) and the material distribution bucket (2) are folded and retracted.

7. The device according to claim 6, characterized in that: The support mechanism (3) further comprises a support ear seat (37), a second positioning pin (38) and a third positioning pin (39). The support ear seat (37) is fixed on the sliding base (5), and a short vertical slot (37a) is provided in the middle thereof and a bayonet (37b) is provided at the top thereof. The second positioning pin (38) and the third positioning pin (39) are arranged vertically and fixed at the bottom of the support vertical rod (31). The second positioning pin (38) is installed in the short vertical slot (37a) and slides along the short vertical slot, and the third positioning pin (39) is aligned with the bayonet (37b). The second positioning pin (38) moves downward along the short vertical slot (37a), and the third positioning pin (39) is engaged with the bayonet (37b) to be fixed. The second positioning pin (38) moves upward along the short vertical slot (37a), and the third positioning pin (39) is disengaged from the bayonet (37b) so that the support mechanism (3) can be rotated and laid flat.

Images