CN211386885U - Composite breathable air brick - Google Patents
Composite breathable air brick Download PDFInfo
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- CN211386885U CN211386885U CN202020033232.8U CN202020033232U CN211386885U CN 211386885 U CN211386885 U CN 211386885U CN 202020033232 U CN202020033232 U CN 202020033232U CN 211386885 U CN211386885 U CN 211386885U
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Abstract
The utility model discloses a compound ventilative formula air brick relates to metallurgical equipment technical field, has solved the technical problem that the air brick among the prior art can not satisfy air flow and purifying effect requirement simultaneously. The gas permeable brick comprises a gas permeable brick body, wherein a slit part used for increasing the gas permeability of argon and a dispersion part used for generating bubbles to purify molten steel are arranged on the gas permeable brick body, a gas blowing part communicated with the slit part and the dispersion part is further arranged on the gas permeable brick body, and gas passes through the gas blowing part and flows into the molten steel through the slit part and the dispersion part to stir and purify the molten steel. The utility model combines the slit type ventilation mode and the dispersion type ventilation mode into a whole, so that the part of the working end of the air brick body contacting the molten steel can ensure enough ventilation quantity entering the molten steel through the slit part; meanwhile, a large amount of bubbles can be formed in the molten steel through the dispersion portion to purify impurities in the molten steel. Not only meets the requirement of ventilation capacity, but also has good purification effect.
Description
Technical Field
The utility model relates to a metallurgical equipment technical field particularly indicates a compound ventilative formula air brick.
Background
The ladle gas permeable brick is the most critical functional refractory material in the bottom argon blowing process, and the use condition is harsher, even the key point of restricting the service life of the ladle.
In the prior art, slit-type air bricks are generally used in China according to different air permeable modes, and dispersion-type air bricks are generally used in Japan. The slit type air brick has the structural characteristics that the air passage is a narrow slit passage, and has the advantages of large air flow, good continuous adjustability, high strength, wide applicability and simple production process. The dispersive air brick has the structural characteristics that the air channel is a series of through labyrinth air holes, the dispersive air brick has the advantages that the molten steel purification effect is good, oxygen burning treatment is not needed or is less, and the transverse condition basically cannot occur, the dispersive air brick has the defect that air is ventilated by the air holes, the design of the air permeability is often contradictory, if the air holes are designed to be too large, the molten steel or the steel slag easily blocks the air hole channel, so the service life is greatly shortened, and if the air holes are designed to be too small, the requirement of the air permeability of a steel mill cannot be met.
Therefore, how to design a composite permeable air brick, the air output by the air brick can meet the requirement of air volume and has good purification effect, which is a technical problem to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a compound ventilative formula air brick to solve the technical problem that the air brick among the prior art can not satisfy air permeability and purifying effect requirement simultaneously.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model provides a compound ventilative formula air brick, includes the air brick body, be provided with the slit part that is used for increasing argon gas permeability and be used for producing the diffusion portion of bubble purification molten steel on the air brick body, still be provided with the portion of blowing that communicates with slit part and diffusion portion on the air brick body, gas passes through the portion of blowing simultaneously via slit part and diffusion portion inflow molten steel in order to stir and purify the molten steel.
On the basis of the technical scheme, the composite breathable air brick can be further improved as follows.
Further, the dispersion part is arranged at the center of the air brick body, and the slit parts are uniformly distributed along the circumferential direction of the dispersion part.
Furthermore, a leakage-proof core for preventing molten steel leakage is further arranged in the air brick body, a pressurizing slit communicated with the dispersion part is arranged in the leakage-proof core, and the pressurizing slit is communicated with the air blowing part.
Further, the sum of the heights of the dispersion part and the leakage-proof core is equal to the overall height of the air brick body, and the height of the dispersion part is higher than that of the leakage-proof core.
Further, the air brick body is the round platform shape structure, the portion of scattering is cuboid or cylinder structure, the setting of slit portion slope is in the circumference of the portion of scattering, the setting of pressure boost slit slope is in the inside a week of leak protection core.
Further, the air blowing part comprises an air chamber arranged at the bottom of the air brick body and an air blowing hole communicated with the air chamber, and the slit part and the pressurizing slit are respectively communicated with the air chamber.
Further, a bottom plate is arranged at the bottom of the air brick body, a supporting piece used for forming an air chamber is arranged between the bottom of the air brick body and the bottom plate, the air blowing holes are formed in the bottom plate, and the air blowing holes are externally connected with air permeable pipes.
Further, the surface of air brick body is provided with the shell that is used for protecting the air brick body, the material of air brick body is aluminium oxide, the material of shell is stainless steel.
Compared with the prior art, the utility model, have following advantage:
the utility model combines the slit type ventilation mode and the dispersion type ventilation mode into a whole, so that the part of the working end of the air brick body contacting the molten steel can ensure enough ventilation quantity entering the molten steel through the slit part; meanwhile, a large amount of bubbles can be formed in the molten steel through the dispersion portion to purify impurities in the molten steel. Not only meets the requirement of ventilation capacity, but also has good purification effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic sectional view of the air brick of the present invention;
FIG. 2 is a schematic top view of the air brick of the present invention;
fig. 3 is a schematic view of the three-dimensional structure of the anti-leakage core of the present invention.
Reference numbers and corresponding reference designations in the drawings:
1. a gas permeable brick body; 2. a slit portion; 3. a dispersion part; 4. a leakage-proof core; 5. a pressurizing slit; 6. a base plate; 7. a gas blowing hole; 8. a support member; 9. an air chamber; 10. a housing.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1
A composite ventilation type air brick is shown in figures 1 to 3 and comprises an air brick body 1, wherein the whole air brick body 1 is of a circular truncated cone-shaped structure. The slit part 2 penetrating through the top and the bottom of the air brick body 1 is arranged in the air brick body 1, the slit part 2 is inclined and is not required to be parallel to a bus of the air brick body 1, and a plurality of groups are uniformly distributed on the slit part 2 along the circumferential direction of the air brick body 1. The center at air brick body 1 is provided with the dispersion portion 3 of parallel and level in air brick body 1 top and bottom, and the preferred cuboid structure of dispersion portion 3 whole also can be designed to the cylinder structure. The bottom plate 6 is arranged below the bottom of the air brick body 1, the supporting piece 8 is arranged between the bottom of the air brick body 1 and the bottom plate 6, the air chamber 9 is formed through the supporting effect of the supporting piece 8, and the supporting piece 8 is of a discontinuous circular ring structure so as to ensure that gas in the air chamber 9 can enter the slit part 2 and the dispersion part 3 respectively. The bottom plate 6 is provided with a blowing hole 7, and the blowing hole 7 is externally connected with a vent pipe.
As shown in fig. 1 to 3, the outer surface of the air brick body 1 is provided with a housing 10 for protecting the air brick body 1, and the housing 10 is connected to the bottom plate 6. Wherein, the material of air brick body 1 is aluminium oxide, and the melting point is high, intensity is high. The housing 10 is made of stainless steel, and the bottom plate 6 is made of steel plate. The slit part 2 is a channel structure with a long and thin section, and the dispersion part 3 is a dispersion block structure with a through labyrinth air hole.
When the air brick works, the top of the air brick body 1 is contacted with molten steel, argon enters the air chamber 9 through the air blowing hole 7 and then enters the molten steel along the slit part 2 and the dispersion part 3 respectively. At the initial stage of argon blowing, the flow of argon in the gas chamber 9 is small, the pressure is small, the argon can break through steel slag on the top surface of the air brick body 1 through the diffusion part 3, and steel infiltration at the working end of the slit part 2 is softened while molten steel is stirred. The top of the slit part 2 is pushed open with the increase of the argon pressure, and the flow rate of argon flowing into the molten steel is increased, thereby reaching the ventilation standard required by smelting. At this time, the argon gas flowing into the molten steel in the slit part 2 has a large ventilation amount, and can well stir the molten steel in the ladle, and the argon gas flowing into the molten steel in the dispersion part 3 is in a bubble form, so that impurities in the molten steel can be effectively driven to reach the top of the molten steel, and a good purification effect is achieved.
The utility model discloses the advantage of slit formula and dispersive air brick has been synthesized for air brick body 1 not only the air output is big, continuous adjustability is good, intensity is high, and is good to the purifying effect of molten steel moreover, does not need or burn the condition that oxygen treatment, can not appear transversely less. In addition, the air brick body 1 can be cleaned less or not cleaned, and the use safety of the air brick is improved.
Example 2
For better realization the utility model discloses, this embodiment is further optimized on the basis of above-mentioned embodiment, adopts following structure very much:
as shown in fig. 1 to 3, a leakage prevention core 4 for preventing molten steel leakage is further provided in the gas brick body 1, the leakage prevention core 4 is provided below the dispersion portion 3, and the bottom of the leakage prevention core 4 is flush with the bottom of the gas brick body 1. A pressurizing slit 5 communicated with the dispersion part 3 is arranged in the leakage-proof core 4, and the pressurizing slit 5 is communicated with an air chamber 9.
As shown in fig. 1 to 3, the sum of the heights of the dispersion portion 3 and the leakage preventing core 4 is equal to the overall height of the air brick body 1, and preferably, the height of the dispersion portion 3 is higher than the height of the leakage preventing core 4. Specifically, the height of the dispersion portion 3 is 2/3 of the overall height of the air brick body 1, and the height of the leakage preventing core 4 is 1/3 of the overall height of the air brick body 1. The pressurizing slits 5 are inclined and are uniformly distributed in a plurality of groups along the circumferential direction of the bottom of the dispersion part 3.
As shown in fig. 3, in particular, the top of the leakage-proof core 4 is designed to be a sunken structure, the dispersion part 3 in the air brick body 1 is designed to be a downward convex structure, and the sunken structure is matched with the downward convex structure, so that the connection stability of the air brick body 1 and the leakage-proof core 4 can be increased, and the sealing performance between the air brick body 1 and the leakage-proof core 4 is improved.
The utility model discloses set up leakage-proof core 4 in the below of diffuse portion 3, can effectively prevent later on oozing the emergence of steel, bleed-out, further improved the security that air brick body 1 used. The leakage-proof core 4 below the dispersion part 3 is provided with a pressurizing slit 5, and argon in the gas chamber 9 can be conveyed to the dispersion part 3 through the pressurizing slit 5, so that the ventilation quantity of the dispersion part 3 is improved. In addition, when the slit part 2 and the dispersion part 3 at the working end part of the air brick body 1 are used up along with the use, the slit part reaches the position of the pressurizing slit 5 of the leakage-proof core 4, and the sectional shape of the position is different from that of the working end of the air brick body 1, so that the slit part is easy to observe and discover, the air brick body 1 is convenient to timely take off the production line for replacement, and the safety of metallurgical work is ensured.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The composite breathable brick is characterized by comprising a breathable brick body (1), wherein a slit part (2) used for increasing the ventilation amount of argon and a dispersing part (3) used for generating bubbles to purify molten steel are arranged on the breathable brick body (1), a blowing part communicated with the slit part (2) and the dispersing part (3) is further arranged on the breathable brick body (1), and gas passes through the blowing part and flows into the molten steel through the slit part (2) and the dispersing part (3) to stir and purify the molten steel.
2. The composite permeable air brick according to claim 1, wherein the diffuse portion (3) is disposed at the center of the air brick body (1), and the slit portions (2) are uniformly distributed along the circumferential direction of the diffuse portion (3).
3. The composite permeable air brick according to claim 2, characterized in that a leakage-proof core (4) for preventing molten steel leakage is further arranged in the air brick body (1), a pressurizing slit (5) communicated with the diffusing part (3) is arranged in the leakage-proof core (4), and the pressurizing slit (5) is communicated with the blowing part.
4. The composite permeable air brick according to claim 3, characterized in that the sum of the heights of the diffused portion (3) and the leakage-proof core (4) is equal to the overall height of the air brick body (1), and the height of the diffused portion (3) is higher than the height of the leakage-proof core (4).
5. The composite permeable air brick according to claim 4, wherein the air brick body (1) is of a truncated cone structure, the scattering part (3) is of a cuboid or cylindrical structure, the slit part (2) is obliquely arranged in the circumferential direction of the scattering part (3), and the pressurizing slit (5) is obliquely arranged in the leakage-proof core (4) for one circle.
6. The composite breathable brick according to claim 5, wherein the blowing part comprises an air chamber (9) arranged at the bottom of the breathable brick body (1) and a blowing hole (7) communicated with the air chamber (9), and the slit part (2) and the pressurizing slit (5) are respectively communicated with the air chamber (9).
7. The composite breathable brick according to claim 6, wherein a bottom plate (6) is arranged at the bottom of the breathable brick body (1), a support member (8) for forming an air chamber (9) is arranged between the bottom of the breathable brick body (1) and the bottom plate (6), the air blowing holes (7) are arranged on the bottom plate (6), and the air blowing holes (7) are externally connected with breathable pipes.
8. The composite permeable air brick according to any one of claims 1 to 7, characterized in that the outer surface of the air brick body (1) is provided with a shell (10) for protecting the air brick body (1), the material of the air brick body (1) is aluminum oxide, and the material of the shell (10) is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033232.8U CN211386885U (en) | 2020-01-08 | 2020-01-08 | Composite breathable air brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033232.8U CN211386885U (en) | 2020-01-08 | 2020-01-08 | Composite breathable air brick |
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| CN211386885U true CN211386885U (en) | 2020-09-01 |
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| CN202020033232.8U Active CN211386885U (en) | 2020-01-08 | 2020-01-08 | Composite breathable air brick |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433829A (en) * | 2021-12-28 | 2022-05-06 | 莱芜钢铁集团银山型钢有限公司 | Composite air brick and argon blowing refining method in continuous casting ladle pouring process |
-
2020
- 2020-01-08 CN CN202020033232.8U patent/CN211386885U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433829A (en) * | 2021-12-28 | 2022-05-06 | 莱芜钢铁集团银山型钢有限公司 | Composite air brick and argon blowing refining method in continuous casting ladle pouring process |
| CN114433829B (en) * | 2021-12-28 | 2024-05-24 | 莱芜钢铁集团银山型钢有限公司 | Argon blowing refining method in pouring process of composite air brick and continuous casting ladle |
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