Integral air brick with multi-layer steel jacket structure

Abstract

The utility model belongs to the technical field of metallurgical refractory materials, and particularly discloses an integral air brick with a multi-layer steel jacket structure, which comprises a brick core and a brick cup formed outside the brick core in a pouring manner, an inner steel jacket matched with the brick core is wrapped on the outer side wall of the brick core, and at least one outer steel jacket is arranged on the periphery of the inner steel jacket at intervals along the radial direction of the inner steel jacket. A plurality of through holes penetrating through the side wall of the outer steel sleeve are evenly distributed in the side wall of the outer steel sleeve, when the brick cup is formed in a casting mode, casting materials can enter the steel sleeves through the through holes to connect the steel sleeves into a whole, after the whole air brick is transversely broken, the outer steel sleeve, the inner steel sleeve and the refractory materials between the steel sleeves can buffer and release stress generated by transverse breakage, and therefore the whole air brick is prevented from being broken. Therefore, the brick core refractory material is protected, the probability of fault blow-by of the brick core refractory material caused by traverse of the seating brick is effectively reduced, and the purpose of effectively avoiding steel ladle off-line caused by traverse blow-by of the whole air brick is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metallurgical refractory material technical field, specifically disclose a multilayer steel sleeve structure integral type air brick. BACKGROUND

[0002] Air brick is important functional element in steelmaking process, through air brick from ladle bottom to the molten steel blow inert gas, in the process of gas rising, play the role of expelling impurities, uniform composition, uniform molten steel temperature, the service life and safety of air brick directly determine the service life of ladle and steelmaking production rhythm.

[0003] Air brick type is split type air brick and integral type air brick, because the construction maintenance of integral type air brick is relatively low to the professional requirement of personnel and occupies the mainstream in the market, but integral air brick once transverse can easily lead to brick core refractory fault string gas, influence air permeability, lead to the ladle forced to change air brick. Split brick can be replaced after fault, but because the construction requirement is high, and cannot be popularized in large quantities. SUMMARY

[0004] In order to solve the problems in the background art, the utility model discloses a multilayer steel sleeve structure integral type air brick, a plurality of steel sleeves are arranged between the brick core and the seat brick, the probability of air leakage caused by the transverse of the air brick is effectively reduced, and the purpose of avoiding the transverse of the integral air brick is achieved.

[0005] To achieve the above-mentioned purposes, the utility model adopts the following technical solutions:

[0006] A multilayer steel sleeve structure integral type air brick, comprising a brick core and a seat brick formed by pouring around the brick core, an inner steel sleeve is wrapped around the outer sidewall of the brick core, the inner steel sleeve is connected with the brick core, at least one outer steel sleeve is arranged at intervals along the radial direction of the inner steel sleeve, a plurality of through holes are uniformly distributed on the sidewall of the outer steel sleeve, and the pouring material can enter the space between the steel sleeves through the through holes to connect the steel sleeves into one body.

[0007] Further, the multilayer steel sleeve structure integral type air brick, two outer steel sleeves are arranged at intervals along the radial direction of the inner steel sleeve.

[0008] Further, the multilayer steel sleeve structure integral type air brick, the height of the outer steel sleeve is equal to or slightly lower than the height of the inner steel sleeve, and the upper and lower edges of the outer steel sleeve do not exceed the corresponding edges of the inner steel sleeve.

[0009] Further, the multilayer steel sleeve structure integral type air brick, the taper of the inner steel sleeve and the outer steel sleeve is the same.

[0010] Further, the multi-layer steel sleeve structure integral type air brick is provided with a connecting sheet between the adjacent steel sleeves, and the two ends of the connecting sheet are connected with the inner steel sleeve or the outer steel sleeve correspondingly.

[0011] Further, the distance between the adjacent steel sleeves of the multi-layer steel sleeve structure integral type air brick is equal to 20-50mm.

[0012] Compared with the prior art, the multi-layer steel sleeve structure integral type air brick has the following beneficial effects:

[0013] The multi-layer steel sleeve structure integral type air brick comprises a brick core and a seat brick formed by pouring around the brick core, an inner steel sleeve is wrapped around the outer side wall of the brick core, at least one outer steel sleeve is arranged at intervals along the radial direction of the inner steel sleeve, a plurality of through holes are uniformly distributed on the side wall of the outer steel sleeve and penetrate the side wall of the outer steel sleeve, and the pouring material can enter the space between the steel sleeves through the through holes to connect the steel sleeves into one body when the seat brick is formed by pouring. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a sectional structure schematic view of the multi-layer steel sleeve structure integral type air brick of the utility model Figure 1 ;

[0015] Figure 2 is a sectional structure schematic view of the multi-layer steel sleeve structure integral type air brick of the utility model Figure 2 ;

[0016] Figure 3 is a front view structure schematic view of the outer steel sleeve in the utility model;

[0017] In the above drawings, 1 is a tail pipe, 2 is a brick core, 3 is a seat brick, 4 is an outer steel sleeve A, 4.1 is a steel sleeve body, 4.2 is a through hole, 5 is an outer steel sleeve B, 6 is an inner steel sleeve, and 7 is a connecting sheet. DETAILED DESCRIPTION

[0018] In order to better understand the utility model, the contents of the utility model are further illustrated below in combination with embodiments, but the contents of the utility model are not limited to the following embodiments only.

[0019] In combination with the drawings Figures 1-3The utility model relates to a kind of multilayer steel sleeve structure integral ventilated brick, which is detailedly described in the utility model, and includes brick core 2 and seat brick 3 formed by pouring mode outside brick core 2, tail pipe 1 at the bottom of brick core 2 extends downward through seat brick 3, and inner steel sleeve 6 is wrapped around the outer side wall of brick core 2, inner steel sleeve 6 is tightly connected with brick core 2, and at least one outer steel sleeve is arranged along the radial direction of inner steel sleeve 6, a plurality of through holes 4.2 are uniformly distributed on the side wall of the outer steel sleeve, which penetrate through the side wall of the outer steel sleeve, when seat brick 3 is poured and formed, the pouring material can enter the space between the steel sleeves through the through holes 4.2 to connect the steel sleeves into one body, during operation, first place the brick core 2 with welded multilayer steel sleeve into the integral brick mold for pouring, then pour and form seat brick 3, and obtain the multilayer steel sleeve structure integral ventilated brick, when the integral ventilated brick is broken transversely, the outer steel sleeve, inner steel sleeve 6 and refractory material between the steel sleeves will buffer and release the stress generated by the transverse break, thereby protecting the refractory material of the brick core 2, reducing the probability of transverse break of the refractory material of the brick core 2, and achieving the purpose of effectively avoiding the situation that the steel ladle is taken offline due to transverse break of the integral ventilated brick.

[0020] As an optional design, the multilayer steel sleeve structure integral ventilated brick is preferably arranged with two outer steel sleeves along the radial direction of the inner steel sleeve 6, which are outer steel sleeve A 4 and outer steel sleeve B 5, respectively, and the structures of the outer steel sleeve A 4 and the outer steel sleeve B 5 are similar, and each of the outer steel sleeve A 4 and the outer steel sleeve B 5 includes a steel sleeve body 4.1, a plurality of through holes 4.2 are uniformly distributed on the steel sleeve body 4.1, and the preparation process is as follows: first wrap the inner steel sleeve 6 outside the refractory material of the brick core 2, then design the first layer of outer steel sleeve B 5 at a distance of about 20-50 mm from the inner steel sleeve 6 with the same taper, cut a plurality of through holes 4.2 of a certain size on the outer steel sleeve B 5, and if necessary, design the second layer of outer steel sleeve A 4 at a distance of about 20-50 mm from the first layer of outer steel sleeve B 5 with the same taper according to the actual situation, and so on, place the brick core 2 connected with the multilayer steel sleeve in the integral brick mold to pour the seat brick, the pouring material of the seat brick will fill the space between the steel sleeves through the through holes 4.2 reserved on the outer steel sleeve, so that the steel sleeves become one body and remain relatively independent, and after demolding, the multilayer steel sleeve structure integral ventilated brick of the utility model is obtained, it should be noted that the brick core of the multilayer steel sleeve structure integral ventilated brick of the utility model can be a different ventilated brick core of dispersion type, slit type or sheet type, and is suitable for single brick core or multiple brick core integral brick, the integral brick is square column or circular table structure, the material of the steel sleeve is not limited, preferably a 304 stainless steel plate with a thickness of 1-2 mm is used for preparation, the layout of the through holes 4.2 cut on each outer steel sleeve is not limited, and preferably 4-6 through holes 4.2 with a diameter of 30-100 mm are uniformly distributed on each outer steel sleeve.

[0021] As an optional design, preferably the multilayer steel sleeve structure monolithic air brick, the height of the outer steel sleeve is equal to or slightly lower than the height of the inner steel sleeve 6, and the upper and lower edges of the outer steel sleeve do not exceed the corresponding edges of the inner steel sleeve 6, preferably the two end edges of the outer steel sleeve are respectively 0-100mm away from the corresponding ends of the brick core refractory.

[0022] As an optional design, preferably the multilayer steel sleeve structure monolithic air brick, the inner steel sleeve 6 and the outer steel sleeve have the same taper.

[0023] As an optional design, preferably the multilayer steel sleeve structure monolithic air brick, a connecting piece 7 is arranged between adjacent steel sleeves, and the two ends of the connecting piece 7 are respectively connected to the inner steel sleeve 6 or the outer steel sleeve.

[0024] The preparation process of the multilayer steel sleeve structure monolithic air brick is as follows:

[0025] First, the inner steel sleeve 6 is wrapped outside the brick core 2 refractory, and the first layer of outer steel sleeve B5 is designed with the same taper at a distance of about 30mm from the inner steel sleeve 6. Four through holes 4.2 with a diameter of 50mm are cut and evenly distributed on the outer steel sleeve B5. The upper and lower ends of the outer steel sleeve B5 are respectively 50mm away from the corresponding ends of the inner steel sleeve 6. The outer steel sleeve B5 is welded and fixed on the inner steel sleeve 6 through the connecting piece 7 with a length of 30mm. The brick core 2 connected with the multilayer steel sleeve is placed in the integral brick mold to pour the seat brick 3. The seat brick pouring material will fill the space between the steel sleeves through the through holes 4.2 reserved on the steel sleeves, so that it becomes an integral whole and maintains relative independence. After demolding, the multilayer steel sleeve structure monolithic air brick is obtained. When the monolithic air brick is broken transversely, the outer steel sleeve B5, the inner steel sleeve 6, and the refractory between the steel sleeves will buffer and release the stress generated by the transverse breakage, thereby protecting the brick core 2 refractory and reducing the probability of transverse breakage of the brick core 2 refractory, achieving the purpose of effectively avoiding the transverse breakage of the monolithic air brick leading to the offline of the steel ladle.

[0026] The above description is only an application implementation manner of the utility model, but the protection scope of the utility model is not limited thereto, and the utility model cannot be limited by the right scope of the utility model. Any equivalent changes according to the technical scheme of the utility model should be covered in the protection scope of the utility model.

Claims

1. A multi-layered steel jacketed monolithic air brick characterized by: The seat brick comprises a brick core and a seat brick formed by pouring outside the brick core, an inner steel sleeve is arranged outside the lateral wall of the brick core, the inner steel sleeve is connected with the brick core, at least one outer steel sleeve is arranged at the periphery of the inner steel sleeve along the radial direction of the inner steel sleeve, a plurality of through holes are uniformly distributed on the lateral wall of the outer steel sleeve, and the pouring material can enter the space between the steel sleeves through the through holes to connect the steel sleeves into one.

2. The multi-layered steel-cased structure monolithic air brick according to claim 1, characterized in that: Two outer steel sleeves are arranged at the periphery of the inner steel sleeve along the radial direction of the inner steel sleeve.

3. The multi-layered steel-cased structure monolithic air brick according to claim 1 or 2, characterized in that: The height of the outer steel sleeve is equal to or slightly lower than the height of the inner steel sleeve, and the upper and lower edges of the outer steel sleeve do not exceed the corresponding edges of the inner steel sleeve.

4. The multi-layered steel-cased structure monolithic air brick according to claim 3, characterized in that: The taper of the inner steel sleeve and the outer steel sleeve is the same.

5. The multi-layered steel-cased structure monolithic air brick according to claim 3, characterized in that: A connecting piece is arranged between the adjacent steel sleeves, and the two ends of the connecting piece are connected with the inner steel sleeve or the outer steel sleeve.

6. The multi-layered steel-cased structure monolithic air brick according to claim 3, characterized in that: The distance between the adjacent steel sleeves is equal to 20-50 mm.

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