Tundish structure capable of reducing bottom dripping water

Abstract

The utility model discloses a tundish structure capable of reducing bottom dripping water, which comprises a tundish steel shell and a working layer, the working layer is embedded in the tundish steel shell, a gap between the tundish steel shell and the working layer is filled with a permanent layer, and the junction of the tundish steel shell and the top of the working layer is sealed. The filter plate is matched with the water leakage hole in the bottom wall of the tundish steel shell, the gap is reserved between the filter plate and the bottom wall of the inner side of the tundish steel shell, and the filter plate has certain supporting and isolating effects on the permanent layer, so that unsmooth water leakage caused by the fact that the permanent layer directly blocks the water leakage hole is avoided; according to the tundish baking device, the plurality of branch pipes communicated with the exhaust pipeline are used for feeding gas into each separated area, water vapor in the permanent layer is pressed down under the action of wind and pressure, and the water vapor is discharged out of the tundish from the permanent layer, so that the water in the tundish is emptied during baking, the water dripping condition during production is reduced, and the potential safety hazard in the pouring process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy, in particular to a tundish structure capable of reducing bottom water dripping. Background Art

[0002] The tundish is a refractory container used in short-process steelmaking. It first receives the molten steel poured from the ladle, and then distributes it to each crystallizer through the tundish water outlet. The tundish is the middle link in the steelmaking production process and the connection point from intermittent operation to continuous operation. As a metallurgical reactor, the tundish is an important part of improving steel production and quality.

[0003] The tundish is generally composed of a middle steel shell, a working layer and a permanent layer. Its construction is divided into two processes. First, a permanent layer of a certain thickness is covered on the middle steel shell with castables, which can be used multiple times; then the working layer is built on the surface of the permanent layer. Because the slab tundish uses spray paint to build the working layer, the water in the working layer spray paint accounts for about 15%. When it is sprayed on the surface of the shell, the water will enter the permanent layer, and this part of the water cannot be completely evaporated. When baking on the continuous casting, the water enters the permanent layer and condenses into water droplets. After the pouring starts, the molten steel is injected into the tundish. The temperature rises, and the water vapor meets the middle steel shell and flows out as water droplets, falling into the production area, posing a safety hazard.

[0004] Therefore, the utility model develops a tundish structure capable of reducing bottom dripping to solve the above-mentioned problem. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an intermediate ladle structure capable of reducing bottom dripping in view of the deficiencies of the above-mentioned prior art. The filter plate cooperates with the leakage hole on the bottom wall of the middle ladle steel shell, and a gap is reserved between the filter plate and the inner bottom wall of the middle ladle steel shell. The filter plate has a certain supporting and isolating effect on the permanent layer, thereby preventing the permanent layer from directly blocking the leakage hole and causing poor leakage. Then, air is blown into the exhaust pipe through an air pump, and the gas is sent into each separated area through multiple branch pipes connected to the exhaust pipe. Under the action of wind and pressure, the water vapor in the permanent layer is pressed down and discharged from the middle ladle from the permanent layer.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A tundish structure capable of reducing bottom dripping, comprising a tundish steel shell and a working layer, wherein the working layer is embedded in the tundish steel shell, and a permanent layer is filled in the gap between the tundish steel shell and the working layer, and a sealing arrangement is provided at the connection between the tundish steel shell and the top of the working layer;

[0008] A plurality of evenly distributed reinforcing ribs are welded on the bottom of the inner side of the middle steel shell, a filter plate is installed between two adjacent reinforcing ribs, a plurality of evenly distributed water leakage holes are penetrated through the bottom wall of the middle steel shell, at least one of the water leakage holes is installed with an air charging interface for docking and installation with the output end of the air pump, an exhaust pipe is installed inside the middle steel shell, and the output end of the air charging interface is connected to the exhaust pipe;

[0009] External air is injected into the sealing area between the middle steel shell and the working layer through an air pump, and excess moisture in the permanent layer is squeezed out from the leaking holes using high pressure.

[0010] Furthermore, a slot is provided in the middle of the reinforcing rib plate, and the exhaust pipe is arranged inside the slot.

[0011] Furthermore, the plurality of reinforcing rib plates evenly separate the plurality of water leakage holes into different areas, and branch pipes are connected to both sides of the exhaust pipe and to each corresponding area, and the branch pipes extend to the top of the permanent layer.

[0012] Furthermore, a groove is provided on the side wall of the reinforcing rib plate, the bottom end of the groove is flush with the bottom of the slot, and the filter plate is clipped into the interior of the installation frame formed by the groove and the slot.

[0013] Furthermore, the aperture of the filter plate is smaller than the aperture of the water leakage hole, and a gap is reserved between the filter plate and the inner bottom wall of the middle steel shell.

[0014] Furthermore, both the inflation interface and the exhaust pipe are provided with a one-way valve.

[0015] Furthermore, the bottom of the middle steel shell is integrally provided with feet, and slots are reserved between adjacent feet.

[0016] Furthermore, an impact cup is integrally provided on one side of the working layer, and a slag overflow port is provided on one side of the impact cup.

[0017] Furthermore, a feed pipe is installed between the middle steel shell, the working layer and the permanent layer, and the connection between the feed pipe and the middle steel shell, the working layer and the permanent layer is sealed.

[0018] The utility model has the following beneficial effects:

[0019] Through the cooperation between the filter plate and the leakage hole on the bottom wall of the middle package steel shell, and a gap is reserved between the filter plate and the inner bottom wall of the middle package steel shell, the filter plate has a certain supporting and isolating effect on the permanent layer, avoiding the permanent layer directly blocking the leakage hole and causing poor leakage. Then, air is blown into the exhaust pipe through an air pump, and the gas is sent into each separated area through multiple branch pipes connected to the exhaust pipe. Under the action of wind and pressure, the water vapor in the permanent layer is pressed down and discharged from the permanent layer to the middle package, so that the moisture in the middle package is emptied during baking, the dripping during production is reduced, and the safety hazard of the casting process is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A first-view stereoscopic view of the tundish structure provided by the utility model;

[0021] Figure 2 The utility model provides Figure 1 An exploded view of the structure shown;

[0022] Figure 3 A second perspective stereogram of the tundish structure provided by the utility model;

[0023] Figure 4 The utility model provides Figure 3 An exploded view of the structure shown;

[0024] Figure 5 A vertical cross-sectional structural stereogram of the tundish structure provided by the utility model;

[0025] Figure 6 The utility model provides Figure 5 a right side view of the structure shown;

[0026] Figure 7 A cross-sectional structural stereogram of the tundish structure provided by the utility model;

[0027] Figure 8 The utility model provides Figure 7 Front view of the structure shown.

[0028] Among them are:

[0029] Middle steel shell-1; working layer-2; permanent layer-3; reinforcing rib plate-4; filter plate-5; water leakage hole-6; charging interface-7; exhaust pipe-8; slot-9; branch pipe-10; foot-11; impact cup-12; slag overflow port-13. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0031] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0032] like Figure 1-8 As shown, a tundish structure capable of reducing bottom dripping comprises a middle ladle steel shell 1 and a working layer 2, wherein the working layer 2 is embedded in the middle ladle steel shell 1, and a permanent layer 3 is filled in the gap between the middle ladle steel shell 1 and the working layer 2, and a sealing arrangement is provided at the top connection between the middle ladle steel shell 1 and the working layer 2;

[0033] A plurality of evenly distributed reinforcing ribs 4 are welded to the bottom of the inner side of the middle steel shell 1, a filter plate 5 is installed between two adjacent reinforcing ribs 4, a plurality of evenly distributed water leakage holes 6 are penetrated through the bottom wall of the middle steel shell 1, at least one of the water leakage holes 6 is installed with an air charging interface 7 for docking and installation with the output end of the air pump, an exhaust pipe 8 is installed inside the middle steel shell 1, as a preferred embodiment: a groove is opened on the side wall of the reinforcing rib plate 4, the bottom end of the groove is flush with the bottom of the card slot 9, and the filter plate 5 is carded inside the installation frame composed of the groove and the card slot 9;

[0034] The output end of the charging interface 7 is connected to the exhaust pipe 8;

[0035] External air is injected into the sealing area between the middle steel shell 1 and the working layer 2 by an air pump, and the excess water in the permanent layer 3 is squeezed out from the leakage hole 6 by high pressure.

[0036] Specifically, a slot 9 is provided in the middle of the reinforcing rib plate 4, and the exhaust pipe 8 is arranged inside the slot 9. The exhaust pipe 8 is engaged with the slot 9 to improve its stability during internal pressurization.

[0037] Specifically, multiple reinforcing rib plates 4 evenly separate multiple leakage holes 6 into different areas, branch pipes 10 are connected to both sides of the exhaust pipe 8 and corresponding to each area, and the branch pipes 10 extend to the top of the permanent layer 3. The permanent layer 3 contains pores, which facilitates squeezing water out of the permanent layer 3 from top to bottom.

[0038] Specifically, the aperture of the filter plate 5 is smaller than that of the leakage hole 6, and a gap is reserved between the filter plate 5 and the inner bottom wall of the middle steel shell 1. The filter plate 5 has a certain supporting and isolating effect on the permanent layer 3, avoiding the problem of poor water leakage caused by the permanent layer 3 directly blocking the leakage hole 6.

[0039] Specifically, one-way valves are provided inside the inflation interface 7 and the exhaust pipe 8 to prevent water vapor from entering the inflation interface 7 and the exhaust pipe 8 and causing corrosion inside the pipe, which is beneficial to improving the service life of the device.

[0040] Specifically, a foot 11 is integrally provided at the bottom of the middle steel shell 1, and a groove gap is reserved between adjacent feet 11. The bottom end of the foot 11 is used to contact the ground to isolate the bottom wall of the middle steel shell 1 from the ground, so as to prevent the leaked water from directly contacting the middle steel shell 1 and causing rust and loss. The height of the groove gap can be adjusted according to the production needs, so as to facilitate the installation of the air pump.

[0041] Specifically, an impact cup 12 is integrally provided on one side of the working layer 2 , and a slag overflow port 13 is provided on one side of the impact cup 12 .

[0042] Specifically, a feed pipe is installed between the middle steel shell 1, the working layer 2 and the permanent layer 3, and the connection between the feed pipe and the middle steel shell 1, the working layer 2 and the permanent layer 3 is sealed. The feed pipe is used to discharge the molten steel. It is a conventional design that can be made by technical personnel in this field.

[0043] When the tundish structure provided by the utility model is built, a permanent layer 3 of a certain thickness is first covered on the middle ladle steel shell 1 with a casting material, and then a working layer 2 is built on the surface of the permanent layer 3 with a spray coating, and the working layer 2 and the middle ladle steel shell 1 are sealed, so that part of the moisture enters the permanent layer 3 and is accumulated in the internal pores. Before the tundish structure is baked, the output end of the air pump is docked and installed on the air interface 7. When ignited and baked, the air pump is started to blow air into the exhaust pipe 8, and the gas is sent into each separated area through a plurality of branch pipes 10 connected to the exhaust pipe 8. The wind and pressure are used to press the water vapor in the permanent layer 3 downward and discharge the tundish from the permanent layer 3, so that the moisture in the tundish is emptied during baking, the dripping during production is reduced, and the safety hazard of the casting process is reduced.

[0044] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A tundish structure capable of reducing bottom dripping, comprising a tundish steel shell (1) and a working layer (2), wherein the working layer (2) is embedded in the tundish steel shell (1), and a permanent layer (3) is filled in the gap between the tundish steel shell (1) and the working layer (2), characterized in that: The connection between the middle steel shell (1) and the top of the working layer (2) is sealed; A plurality of evenly distributed reinforcing rib plates (4) are welded to the bottom of the inner side of the middle steel shell (1), a filter plate (5) is installed between two adjacent reinforcing rib plates (4), a plurality of evenly distributed water leakage holes (6) are penetrated through the bottom wall of the middle steel shell (1), at least one of the water leakage holes (6) is installed with an air charging interface (7) for docking with the output end of the air charging pump, an exhaust pipe (8) is installed inside the middle steel shell (1), and the output end of the air charging interface (7) is connected to the exhaust pipe (8); External air is injected into the sealing area between the middle steel shell (1) and the working layer (2) by means of an air pump, and excess water in the permanent layer (3) is squeezed out from the water leakage hole (6) by means of high pressure.

2. A tundish structure capable of reducing bottom dripping according to claim 1, characterized in that: A slot (9) is provided in the middle of the reinforcing rib plate (4), and the exhaust pipe (8) is arranged inside the slot (9).

3. A tundish structure capable of reducing bottom dripping according to claim 2, characterized in that: The plurality of reinforcing rib plates (4) evenly separate the plurality of water leakage holes (6) into different areas, and branch pipes (10) are connected to both sides of the exhaust pipe (8) and to each corresponding area, and the branch pipes (10) extend to the top of the permanent layer (3).

4. The tundish structure capable of reducing bottom dripping according to claim 2, characterized in that: A groove is provided on the side wall of the reinforcing rib plate (4), the bottom end of the groove is flush with the bottom of the clamping slot (9), and the filter plate (5) is clamped inside the installation frame formed by the groove and the clamping slot (9).

5. The tundish structure capable of reducing bottom dripping according to claim 1, characterized in that: The aperture of the filter plate (5) is smaller than the aperture of the water leakage hole (6), and a gap is reserved between the filter plate (5) and the inner bottom wall of the middle steel shell (1).

6. The tundish structure capable of reducing bottom dripping according to claim 1, characterized in that: Both the inflation interface (7) and the exhaust pipe (8) are provided with one-way valves.

7. The tundish structure capable of reducing bottom dripping according to claim 1, characterized in that: The bottom of the middle steel shell (1) is integrally provided with pads (11), and slots are reserved between adjacent pads (11).

8. The tundish structure capable of reducing bottom dripping according to claim 1, characterized in that: An impact cup (12) is integrally provided on one side of the working layer (2), and a slag overflow port (13) is provided on one side of the impact cup (12).

9. The tundish structure capable of reducing bottom dripping according to claim 1, characterized in that: A feed pipe is installed between the middle steel shell (1), the working layer (2) and the permanent layer (3), and the connection between the feed pipe and the middle steel shell (1), the working layer (2) and the permanent layer (3) is sealed.

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