Sliding plate device for converter tapping

Abstract

The utility model discloses a sliding plate device for tapping of a converter. The sliding plate device comprises a sealing cover, the sliding groove is formed in the middle of the interior of the sealing cover, an upper sliding plate is arranged on the upper portion of the interior of the sliding groove and is in sliding fit with the sliding groove, a lower sliding plate is arranged on the lower portion of the interior of the sliding groove and is in sliding fit with the sliding groove, and the lower sliding plate is attached to the upper sliding plate; through holes are formed in the lower sliding plate and the upper sliding plate, the positions of the through holes correspond to each other, and the problems that molten steel leaks easily at the connecting positions of the sliding plates, and the performance of the sliding plates is easily reduced by high-temperature molten steel are solved through the structure.

Description

Technical Field

[0001] The utility model relates to the technical field of steel smelting, in particular to a slide plate device for tapping steel from a converter. Background Art

[0002] The steel-tapping slide is a key component used in converters, electric arc furnaces and other equipment in the steel production process. Its design allows workers to adjust the flow direction and speed of molten metal by controlling the movement of the slide, so as to better control the distribution and flow state of the charge. In addition, the steelmaking slide also plays an important role in equipment operation and maintenance. It can carry workers to the location outside or inside the equipment that needs maintenance. In the steelmaking process, the slide can also be used for work assistance, such as temperature measurement, sampling and other operations.

[0003] For example, the Chinese patent "A skateboard device for slag blocking at the converter tapping port" with announcement number CN205347486U includes matching bricks, sliding skateboard bricks, fixed skateboard bricks, a water outlet, a skateboard brick tapping port and an additional tapping port. The water outlet is connected to the converter tapping port, and the water outlet is also connected to the fixed skateboard bricks, the sliding skateboard bricks and the matching bricks in sequence by a sliding frame. The skateboard brick tapping port and the additional tapping port are located on the sliding skateboard brick. The additional tapping port is 3 / 4 of the inner diameter area of ​​the converter tapping port. The center of the additional tapping port is located on the symmetry axis of the skateboard brick, and the distance between the center of the additional tapping port and the lower end of the sliding skateboard brick is 1 / 4 of the length of the sliding skateboard brick.

[0004] Although the above-mentioned prior art can realize the skateboard to regulate the flow of molten steel, in actual use, on the one hand, the skateboard connection is prone to molten steel leakage. After the skateboard has been used for a long time, the connection will be worn and corroded, causing the molten steel to leak from the connection of the skateboard, thereby affecting the continuous operation of the converter. On the other hand, high-temperature molten steel can easily reduce the performance of the skateboard. When the skateboard is working, it is directly in contact with the high-temperature molten steel, causing the material of the skateboard to be denatured, thereby reducing the refractory performance and mechanical strength of the skateboard. Therefore, it does not meet the existing needs. In this regard, we propose a skateboard device for converter steelmaking. Utility Model Content

[0005] The utility model aims to provide a slide plate device for converter steel tapping, so as to solve the problems in the above background technology that the slide plate connection is prone to molten steel leakage and high temperature molten steel is prone to reduce the performance of the slide plate.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slide plate device for steel tapping in a converter, comprising a sealing cover; and further comprising:

[0007] A slide groove is arranged at the middle position inside the sealing cover, an upper slide plate is arranged above the inside of the slide groove, and the upper slide plate is slidably matched with the slide groove, a lower slide plate is arranged below the inside of the slide groove, the lower slide plate is slidably matched with the slide groove, and the lower slide plate is fitted with the upper slide plate, through holes are arranged inside the lower slide plate and the upper slide plate, and the positions of the through holes correspond.

[0008] Preferably, a first driving cavity is provided below both sides of the sealing cover, and the first driving cavity is connected to the slide groove, a first motor is fixedly provided inside the sealing cover below the middle position of the first driving cavity, and the output shaft of the first motor extends to the inside of the first driving cavity, and a second driving gear is fixedly provided outside the output shaft of the first motor located inside the first driving cavity.

[0009] Preferably, a second driving chamber is provided above both sides of the sealing cover, and the second driving chamber is connected to the slide groove, a second motor is fixedly provided inside the sealing cover below the middle position of the second driving chamber, and the output shaft of the second motor extends to the inside of the second driving chamber, and a first driving gear is fixedly provided outside the output shaft of the second motor located inside the second driving chamber.

[0010] Preferably, first racks are fixedly provided on both sides of the upper slide plate, and the first racks are meshingly connected with the first driving gear, and second racks are fixedly provided on both sides of the lower slide plate, and the second racks are meshingly connected with the second driving gear.

[0011] Preferably, an annular groove is provided at the upper end of the lower slide plate and the lower end of the upper slide plate, and a zirconium ring is provided inside the annular groove, and the zirconium ring is fixedly connected to the inner wall of the annular groove.

[0012] Preferably, an inner water inlet is provided at the upper end of the sealing cover, and the inner water inlet is fixedly connected to the sealing cover, and a lower water inlet is provided at the lower end of the sealing cover, and the lower water inlet is fixedly connected to the sealing cover.

[0013] Preferably, the upper and lower ends of the interior of the sealing cover are both provided with connecting pipes, the connecting pipes respectively correspond to the positions of the lower water inlet and the inner water inlet, and the connecting pipes are connected to the chute.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model can make the direct connection of the slide plates tighter through the sealing cover and the slide groove. When the upper slide plate and the lower slide plate are working, the molten steel inside the converter is in a static state through the misalignment of the through holes on the upper slide plate and the lower slide plate. When the molten steel needs to be transferred, the upper slide plate and the lower slide plate are moved in the slide groove inside the sealing cover until the positions of the through holes on the upper slide plate and the lower slide plate correspond, and the connecting pipe and the through hole are connected at the same time, and the molten steel is discharged from the converter through the connecting pipe and the through hole. The sealing cover and the slide groove prevent the molten steel from leaking from the connection between the upper slide plate and the lower slide plate, and also avoid the deviation of the upper slide plate and the lower slide plate when moving, thereby improving the sealing of the connection between the upper slide plate and the lower slide plate.

[0016] 2. The utility model can make the moving positions of the upper slide plate and the lower slide plate more accurate through the first driving gear and the second driving gear. When the molten steel is sealed, the first motor and the second motor are energized in the positive direction at the same time, and the energization directions of the first motor and the second motor are opposite. At this time, the output shaft of the first motor drives the second driving gear to rotate, and the second driving gear is rotated to drive the second rack meshing with it to move, and the lower slide plate moves toward the rear end of the slide groove. At the same time, the output shaft of the second motor drives the first driving gear to rotate, and the first driving gear is rotated to drive the first rack meshing with it to move. The upper slide moves toward the front end of the slide until it moves to a suitable position. At this time, the positions of the through holes on the upper slide and the lower slide are staggered, so that the upper slide and the lower slide seal the connecting pipe. When molten steel is flowing, the first motor and the second motor are energized in reverse at the same time, and the energization directions of the first motor and the second motor are opposite. The lower slide is moved toward the front end of the slide by the first motor, and the upper slide is moved toward the rear end of the slide by the second motor until the upper slide corresponds to the position of the through holes on the lower slide. At this time, the molten steel flows, making the lower slide and the upper slide move more accurately, thereby preventing leakage of the molten steel.

[0017] 3. The utility model can improve the fire resistance of the upper and lower slide plates through the annular groove and the zirconium ring. When molten steel is circulated, the high-temperature molten steel directly contacts the upper and lower slide plates. The zirconium ring with low thermal expansion coefficient, high melting point and strong chemical stability can improve the fire resistance of the upper and lower slide plates, avoid the degeneration of the slide plate material, thereby improving the fire resistance and mechanical strength of the upper and lower slide plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the internal structure of the utility model;

[0019] Figure 2 It is a side view of the internal structure of the utility model;

[0020] Figure 3 It is a top view of the internal structure of the utility model;

[0021] Figure 4 For the utility model Figure 2 A partial enlarged view of area A.

[0022] In the figure: 1, sealing cover; 2, inner water inlet; 3, water outlet; 4, connecting pipe; 5, slide groove; 6, first drive chamber; 7, second drive chamber; 8, upper slide plate; 9, lower slide plate; 10, first rack; 11, second rack; 12, zirconium ring; 13, first drive gear; 14, second drive gear; 15, first motor; 16, second motor; 17, through hole; 18, annular groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-4 The utility model provides an embodiment: a slide plate device for steel tapping in a converter, comprising a sealing cover 1; and further comprising:

[0025] The slide groove 5 is arranged at the middle position inside the sealing cover 1, and an upper slide plate 8 is arranged above the inside of the slide groove 5, and the upper slide plate 8 slides with the slide groove 5, and a lower slide plate 9 is arranged below the inside of the slide groove 5, and the lower slide plate 9 slides with the slide groove 5, and the lower slide plate 9 fits with the upper slide plate 8, and through holes 17 are arranged inside the lower slide plate 9 and the upper slide plate 8, and the positions of the through holes 17 correspond, and the lower slide plate 9 and the upper slide plate 8 are made of sintered aluminum magnesium spinel, zirconium corundum, magnesia and a small amount of metal silicon powder.

[0026] During use, when the upper slide plate 8 and the lower slide plate 9 are working, the molten steel inside the converter is kept in a static state by misaligning the through holes 17 on the upper slide plate 8 and the lower slide plate 9. When the molten steel needs to be transferred, the upper slide plate 8 and the lower slide plate 9 are moved in the slide groove 5 inside the sealing cover 1 until the positions of the through holes 17 on the upper slide plate 8 and the lower slide plate 9 correspond, and the connecting pipe 4 is connected to the through hole 17, and the molten steel is discharged from the converter through the connecting pipe 4 and the through hole 17. The sealing cover 1 and the slide groove 5 prevent the molten steel from leaking from the connection between the upper slide plate 8 and the lower slide plate 9, and also avoid the displacement of the upper slide plate 8 and the lower slide plate 9 when moving.

[0027] See also Figure 2A first driving chamber 6 is provided below both sides of the sealing cover 1, and the first driving chamber 6 is communicated with the slide groove 5. A first motor 15 is fixedly provided inside the sealing cover 1 below the middle position of the first driving chamber 6, and the output shaft of the first motor 15 extends to the inside of the first driving chamber 6. A second driving gear 14 is fixedly provided outside the output shaft of the first motor 15 located inside the first driving chamber 6, so that the second driving gear 14 can be driven to rotate by the first motor 15.

[0028] See also Figure 2 A second driving chamber 7 is provided above both sides of the sealing cover 1, and the second driving chamber 7 is communicated with the slide groove 5. A second motor 16 is fixedly provided inside the sealing cover 1 below the middle position of the second driving chamber 7, and the output shaft of the second motor 16 extends to the inside of the second driving chamber 7. The second motor 16 is located inside the second driving chamber 7, and a first driving gear 13 is fixedly provided outside the output shaft thereof, so that the first driving gear 13 can be driven to rotate by the second motor 16.

[0029] See also Figure 2 A first rack 10 is fixedly provided on both sides of the upper slide 8, and the first rack 10 is meshed with the first driving gear 13. A second rack 11 is fixedly provided on both sides of the lower slide 9, and the second rack 11 is meshed with the second driving gear 14, so that the upper slide 8 is driven by the first driving gear 13 and the lower slide 9 is driven by the second driving gear 14 to move.

[0030] See also Figure 3 and Figure 4 An annular groove 18 is provided at the upper end inside the lower slide plate 9 and the lower end inside the upper slide plate 8, and a zirconium ring 12 is provided inside the annular groove 18. The zirconium ring 12 is fixedly connected to the inner wall of the annular groove 18, and the zirconium ring 12 is embedded in the annular groove 18 by chrome green fire mud, so as to improve the fire resistance of the upper slide plate 8 and the lower slide plate 9 by the zirconium ring 12.

[0031] See also Figure 1 An inner water inlet 2 is provided at the upper end of the sealing cover 1, and the inner water inlet 2 is fixedly connected to the sealing cover 1. A lower water inlet 3 is provided at the lower end of the sealing cover 1, and the lower water inlet 3 is fixedly connected to the sealing cover 1, so that molten steel can flow in and out through the inner water inlet 2 and the lower water inlet 3.

[0032] See also Figure 1 A connecting pipe 4 is provided at the upper and lower ends of the sealing cover 1, and the connecting pipe 4 corresponds to the position of the lower water outlet 3 and the inner water outlet 2 respectively, and the connecting pipe 4 is connected with the chute 5, so that the lower water outlet 3 and the inner water outlet 2 are connected through the chute 5 through the connecting pipe 4.

[0033] Working principle: When the molten steel is sealed, the first motor 15 and the second motor 16 are energized in the forward direction at the same time, and the energization directions of the first motor 15 and the second motor 16 are opposite. At this time, the output shaft of the first motor 15 drives the second driving gear 14 to rotate, and the second driving gear 14 drives the second rack 11 meshing with it to move while the lower slide 9 moves to the rear end of the slide 5. At the same time, the output shaft of the second motor 16 drives the first driving gear 13 to rotate, and the first driving gear 13 drives the first rack 10 meshing with it to move while the upper slide 8 moves to the front end of the slide 5. After moving to a suitable position, at this time, the through hole 1 on the upper slide 8 and the lower slide 9 7 are staggered in position, so that the upper slide plate 8 and the lower slide plate 9 can seal the connecting pipe 4. When molten steel is circulating, the first motor 15 and the second motor 16 are energized in reverse at the same time, and the energization directions of the first motor 15 and the second motor 16 are opposite. The lower slide plate 9 is moved toward the front end of the slide chute 5 by the first motor 15, and the upper slide plate 8 is moved toward the rear end of the slide chute 5 by the second motor 16 until the positions of the through holes 17 on the upper slide plate 8 and the lower slide plate 9 correspond. At this time, the molten steel flows. When the molten steel is circulating, the high-temperature molten steel directly contacts the upper slide plate 8 and the lower slide plate 9. The zirconium ring 12 with a low thermal expansion coefficient, a high melting point and strong chemical stability can improve the fire resistance of the upper slide plate 8 and the lower slide plate 9.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A slide plate device for steel tapping in a converter, comprising a sealing cover (1); Features: Also includes: A slide groove (5) is arranged at a middle position inside the sealing cover (1); an upper slide plate (8) is arranged above the slide groove (5), and the upper slide plate (8) and the slide groove (5) are slidably matched; a lower slide plate (9) is arranged below the slide groove (5), and the lower slide plate (9) and the slide groove (5) are slidably matched, and the lower slide plate (9) and the upper slide plate (8) are fitted; through holes (17) are arranged inside the lower slide plate (9) and the upper slide plate (8), and the positions of the through holes (17) correspond.

2. A sliding plate device for tapping steel from a converter according to claim 1, characterized in that: A first drive chamber (6) is provided below both sides of the sealing cover (1), and the first drive chamber (6) is communicated with the slide groove (5). A first motor (15) is fixedly provided inside the sealing cover (1) below the middle position of the first drive chamber (6), and the output shaft of the first motor (15) extends into the first drive chamber (6). A second drive gear (14) is fixedly provided outside the output shaft of the first motor (15) located inside the first drive chamber (6).

3. A sliding plate device for tapping steel from a converter according to claim 2, characterized in that: A second drive chamber (7) is provided above both sides of the sealing cover (1), and the second drive chamber (7) is communicated with the slide groove (5). A second motor (16) is fixedly provided inside the sealing cover (1) below the middle position of the second drive chamber (7), and the output shaft of the second motor (16) extends into the second drive chamber (7). A first drive gear (13) is fixedly provided outside the output shaft of the second motor (16) located inside the second drive chamber (7).

4. A sliding plate device for tapping steel from a converter according to claim 3, characterized in that: A first rack (10) is fixedly provided on both sides of the upper slide plate (8), and the first rack (10) is meshingly connected to a first driving gear (13); a second rack (11) is fixedly provided on both sides of the lower slide plate (9), and the second rack (11) is meshingly connected to a second driving gear (14).

5. The slide plate device for tapping steel from a converter according to claim 1, characterized in that: An annular groove (18) is provided at the upper end of the lower slide plate (9) and the lower end of the upper slide plate (8), and a zirconium ring (12) is provided inside the annular groove (18), and the zirconium ring (12) is fixedly connected to the inner wall of the annular groove (18).

6. A sliding plate device for tapping steel from a converter according to claim 1, characterized in that: The upper end of the sealing cover (1) is provided with an inner water inlet (2), and the inner water inlet (2) is fixedly connected to the sealing cover (1); the lower end of the sealing cover (1) is provided with a lower water inlet (3), and the lower water inlet (3) is fixedly connected to the sealing cover (1).

7. A sliding plate device for tapping steel from a converter according to claim 6, characterized in that: The upper and lower ends of the sealing cover (1) are both provided with connecting pipes (4), the connecting pipes (4) correspond to the positions of the lower water inlet (3) and the inner water inlet (2) respectively, and the connecting pipes (4) are connected to the chute (5).

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