A dispersion type integral air brick against faulting

Abstract

The utility model relates to the related technical field of dispersion type integral air brick, especially to an air brick of preventing fault, including steel shell, the inner wall lower part of steel shell is provided with base, the bottom of base is equipped with bottom plate, the base and bottom plate concave-convex face matching form annular air chamber, the utility model discloses through the mechanical locking structure of T type tenon and T type slot of sheet and dispersion block, ensure that each component is not easy to produce relative displacement, multiple reinforcement mode effectively reduces the interlayer separation and fault phenomenon caused by thermal expansion and cold shrinkage, mechanical stress, the radial trapezoidal air gap of base sinking groove bottom surface, cooperate fifteen degree bevel design and make airflow accelerate and even diffusion when passing through the gap, the trapezoidal cross section structure of dispersion block and sheet arc air passage synergistic effect, realize the secondary dispersion of airflow, through multilayer airflow shunt design, effectively reduce the problem that local airflow concentrates or flow rate is uneven.

Description

Technical Field

[0001] This utility model relates to the technical field of breathable bricks, and in particular to a diffuse-type integral breathable brick for preventing fractures. Background Technology

[0002] In the metallurgical and chemical industries, permeable bricks are key components of high-temperature containers such as blast furnaces and ladles. They are mainly used to introduce gas into the container to achieve functions such as stirring molten steel, promoting uniform reaction, and regulating temperature. The performance of permeable bricks directly affects product quality, production efficiency, and equipment lifespan. Therefore, there is a particular need for a type of diffused, integral permeable brick that prevents delamination.

[0003] A type of composite dispersion permeable brick, authorized by announcement number CN222165694U, includes a steel shell, a base, dispersion blocks, plates, castable refractory, a bottom plate, and a tailpipe. The steel shell has a conical cylindrical structure. The base is located at the center of the large-diameter end within the steel shell. The dispersion blocks and plates are positioned within a square groove in the base. The castable refractory fills the steel shell around the base and plates. A gap is formed between the bottom plate and the end face containing the base and castable refractory, creating an air chamber. The tailpipe communicates with the air chamber and passes through the center of the bottom plate. This invention features a simple structure, is easy to process, and solves the problems of easy steel penetration into the plates and poor corrosion resistance of the dispersion blocks, thus improving service life.

[0004] However, under high-temperature conditions, the plates and dispersion blocks of the aforementioned composite permeable brick are prone to displacement due to the difference in their thermal expansion coefficients, which can lead to airway blockage or gas leakage. Furthermore, after the gas enters the air chamber from the tailpipe, the layout of the two rows of permeable slits combined with the airway cross-section can easily lead to uneven airflow distribution, affecting the dispersion effect of the permeable brick.

[0005] To address the aforementioned issues, a diffuse-type integral permeable brick for preventing faulting is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a diffusion-type integral permeable brick for preventing fractures, so as to solve the problem of the existing diffusion-type integral permeable bricks for preventing fractures mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a diffusion-type integral permeable brick for preventing faulting, comprising a steel shell, a base provided in the lower middle of the inner wall of the steel shell, the base being an annular boss, a bottom plate provided at the bottom of the base being a recessed groove and provided on the bottom wall of the steel shell, the base and the bottom plate matching the concave and convex surfaces to form an annular air chamber, a plate provided at the top of the base, a diffusion block provided at the top of the base, and the plate being provided around the diffusion block, the outer sidewall of the annular air chamber being filled with ceramic fiber rope, and a tail pipe provided at the bottom wall of the annular air chamber;

[0008] The base includes a recessed groove at its top, and a ventilated slit is provided on the bottom surface of the recessed groove. The ventilated slit is trapezoidal and extends to the bottom of the base.

[0009] Preferably, the space between the base, plates, and dispersion block assembly and the steel shell is filled with low-cement self-flowing castable.

[0010] Preferably, the inner wall of the steel shell is convex, and the inner wall of the steel shell is embedded in low-cement self-flowing castable for fixation.

[0011] Preferably, the plate includes a T-shaped tenon provided on its inner wall, and the plate has arc-shaped air passages on both sides of the T-shaped tenon.

[0012] Preferably, the dispersion block includes T-shaped grooves formed around its perimeter, and the T-shaped grooves and T-shaped tenons are adapted to form a mechanical locking structure.

[0013] Preferably, the middle part of the sinking trough is an arc-shaped trough, and the ventilation slits are arranged in multiple groups radially, with the central row corresponding to the tailpipe. The top surface is a 15-degree slope to improve the uniformity of airflow.

[0014] Preferably, both the plate and the dispersion block are located at the top of the sinking trough, and the dispersion block has a trapezoidal cross-section that is wider at the top and narrower at the bottom.

[0015] Preferably, the tailpipe passes through the steel shell and the bottom plate, and is connected to the annular air chamber.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The inner wall of the steel shell adopts a convex ridge design and is embedded in low cement self-flowing castable to form a mechanical interlocking structure, which enhances the overall stability;

[0018] 2. The plates and diffused blocks are mechanically locked together by T-shaped tenons and T-shaped grooves to ensure that the components are not prone to relative displacement under high temperature, high pressure and airflow impact. Multiple reinforcement methods effectively reduce interlayer separation and delamination caused by thermal expansion and contraction and mechanical stress, and greatly improve the structural stability of the permeable bricks.

[0019] 3. The radial trapezoidal ventilation slits on the bottom surface of the base recess, combined with the 15-degree slope design, accelerate and evenly diffuse the airflow when passing through the slits. The trapezoidal cross-sectional structure of the dispersion block and the arc-shaped air passage of the plate work together to achieve secondary dispersion of the airflow. Through the multi-level airflow diversion design, the problem of local airflow concentration or uneven flow velocity is effectively reduced.

[0020] 4. The outer perimeter wall of the annular gas chamber is filled with ceramic fiber ropes, which, together with the sealing effect of the castable refractory, form a double sealing structure to effectively prevent gas leakage. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the overall structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a cross-sectional view of the overall structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the structure of the base of this utility model;

[0024] Figure 4 This is a schematic diagram of the connection structure between the plate and the dispersion block of this utility model;

[0025] Figure 5 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0026] In the diagram: 1. Steel shell; 2. Base; 201. Sinking groove; 202. Ventilation slit; 3. Base plate; 4. Annular air chamber; 5. Plate; 501. T-shaped tenon; 502. Arc-shaped air passage; 6. Dispersion block; 601. T-shaped groove; 7. Ceramic fiber rope; 8. Tail pipe; 9. Low-cement self-flowing castable. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] Example

[0029] like Figure 1-5 As shown, the device includes a steel shell 1, a base 2 located on the lower part of the inner wall of the steel shell 1, and the base 2 is an annular boss. The bottom of the base 2 is provided with a bottom plate 3, which is a recessed groove located on the bottom wall of the steel shell 1. The base 2 and the bottom plate 3 are matched to form an annular air chamber 4. The top of the base 2 is provided with a plate 5 and a diffusion block 6, and the plate 5 is located around the diffusion block 6. The outer side wall of the annular air chamber 4 is filled with ceramic fiber rope 7, and the bottom wall of the annular air chamber 4 is provided with a tail pipe 8.

[0030] It should be noted that in this embodiment, the tailpipe 8 serves as the airflow inlet, passing through the steel shell 1 and the base plate 3, and directly connecting to the annular air chamber 4. The annular air chamber 4 is formed by matching the annular boss of the base 2 and the recessed groove of the base plate 3. The airflow enters the annular air chamber 4 through the tailpipe 8. At this time, the airflow initially diffuses within the annular space. The ceramic fiber rope 7 fills the outer sidewall of the air chamber, playing a sealing and buffering role to prevent airflow leakage or impact on the inner wall of the steel shell 1. A trapezoidal ventilation slit 202 is opened on the bottom surface of the recessed groove 201 at the top of the base 2. The slits are radially distributed, with the central row corresponding to the tailpipe 8. The top surface is a 15° slope. The airflow flows upward from the annular air chamber 4 into the recessed groove 201. When passing through the ventilation slit 202, due to the trapezoidal cross-section, the flow velocity increases and diffuses radially in all directions. The 15-degree slope design of the ventilation slit 202 allows the airflow to obtain a slope when passing through the slit. The thrust further enhances the uniformity of the circumferential distribution and avoids the concentration of airflow in the center. The dispersion block 6 has a trapezoidal cross-section that is wider at the top and narrower at the bottom. It is located at the top of the sink trough 201. T-shaped grooves 601 are opened around its perimeter, forming a mechanical locking structure with the T-shaped tenons 501 on the inner wall of the plate 5, ensuring that the two are firmly connected without gaps. The plate 5 is located around the dispersion block 6, and arc-shaped air passages 502 are opened on both sides of it. After the airflow passes through the ventilated slits 202, part of it passes directly through the dispersion block 6, and the other part flows to the perimeter through the arc-shaped air passages 502. The trapezoidal cross-section of the dispersion block 6 causes the airflow to slow down during the upward process due to the expansion of the cross-sectional area, realizing energy dissipation and uniform distribution. At the same time, when the airflow passes through the top of the dispersion block 6, it is blocked by the upper wide structure and forced to diffuse to the perimeter, forming a synergistic flow guide with the arc-shaped air passages 502 of the plate 5, and finally being evenly discharged from the top of the ventilated brick.

[0031] The dispersion block 6 and the plate 5 are mechanically locked without bolts by the T-shaped tenon 501 and the T-shaped groove 601. The trapezoidal block is pressed by its own weight and thermal expansion to prevent delamination. The plate 5 can be disassembled and replaced separately.

[0032] like Figure 1-3 As shown, the base 2, plate 5 and dispersion block 6 are filled with low-cement self-flowing castable 9 between their outer periphery and the steel shell 1. The inner wall of the steel shell 1 is convex and embedded in the low-cement self-flowing castable 9 for fixation.

[0033] It should be noted that in this embodiment, the low-cement self-flowing castable 9 is filled between the base 2, plate 5, dispersion block 6 assembly and steel shell 1. At the same time, the inner wall of the steel shell 1 is designed with convex ridges and embedded in the castable. The mechanical interlocking enhances the overall bonding force and prevents delamination caused by thermal expansion and contraction or airflow impact.

[0034] Working principle of this utility model:

[0035] Refer to the instruction manual appendix Figure 1-5Tailpipe 8 serves as the airflow inlet, passing through steel shell 1 and base plate 3, and directly connecting to annular air chamber 4. Annular air chamber 4 is formed by matching the annular boss of base 2 and the recessed groove of base plate 3. Airflow enters annular air chamber 4 through tailpipe 8. At this time, the airflow initially diffuses in the annular space. Ceramic fiber rope 7 fills the outer side wall of the air chamber, playing a sealing and buffering role to prevent airflow leakage or impact on the inner wall of steel shell 1.

[0036] The bottom surface of the recessed groove 201 at the top of the base 2 has a trapezoidal ventilation slit 202. The slits are distributed radially, with the central row corresponding to the tailpipe 8. The top surface is a 15° slope. The airflow flows upward from the annular air chamber 4 into the recessed groove 201. When passing through the ventilation slit 202, the flow velocity increases due to the trapezoidal cross-section and diffuses radially in all directions. The 15-degree slope design of the ventilation slit 202 allows the airflow to obtain oblique thrust when passing through the slit, further improving the uniformity of the circumferential distribution and avoiding the concentration of airflow in the center.

[0037] The dispersion block 6 has a trapezoidal cross-section that is wider at the top and narrower at the bottom. It is located at the top of the sink trough 201. T-shaped grooves 601 are opened around its perimeter, forming a mechanical locking structure with the T-shaped tenons 501 on the inner wall of the plate 5, ensuring a stable connection between the two without gaps. The plate 5 is located around the dispersion block 6, and arc-shaped air passages 502 are opened on both sides of it. After the airflow passes through the ventilated slits 202, part of it passes directly through the dispersion block 6, and the other part flows to the surroundings through the arc-shaped air passages 502. The trapezoidal cross-section of the dispersion block 6 causes the airflow to slow down during the upward process due to the expansion of the cross-sectional area, achieving energy dissipation and uniform distribution. At the same time, when the airflow passes through the top of the dispersion block 6, it is blocked by the upper wide structure and forced to diffuse to the surroundings, forming a coordinated flow guide with the arc-shaped air passages 502 of the plate 5, and finally being evenly discharged from the top of the ventilated brick.

[0038] Low-cement self-flowing castable 9 is filled between the base 2, plate 5, dispersion block 6 and steel shell 1. Meanwhile, the inner wall of the steel shell 1 is designed with convex ridges and embedded in the castable. The mechanical interlocking enhances the overall bonding force and prevents delamination caused by thermal expansion and contraction or airflow impact.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A type of diffused, permeable brick for preventing faulting, comprising a steel shell (1), characterized in that: A base (2) is provided in the lower part of the inner wall of the steel shell (1), and the base (2) is an annular boss. A bottom plate (3) is provided at the bottom of the base (2), and the bottom plate (3) is a recessed groove and is provided on the bottom wall of the steel shell (1). The base (2) and the bottom plate (3) match to form an annular air chamber (4). A plate (5) is provided at the top of the base (2). A diffusion block (6) is provided at the top of the base (2), and the plate (5) is provided around the diffusion block (6). The outer side wall of the annular air chamber (4) is filled with ceramic fiber rope (7). A tail pipe (8) is provided on the bottom wall of the annular air chamber (4). The base (2) includes a recessed groove (201) opened on its top, and a ventilation slit (202) is opened on the bottom surface of the recessed groove (201). The ventilation slit (202) is a trapezoidal slit and extends to the bottom of the base (2).

2. The anti-fault type diffused integral permeable brick according to claim 1, characterized in that: The space between the base (2), plate (5) and dispersion block (6) assembly and the steel shell (1) is filled with low-cement self-flowing castable material (9).

3. The anti-fault type diffused integral permeable brick according to claim 2, characterized in that: The inner wall of the steel shell (1) is convex, and the inner wall of the steel shell (1) is embedded in the low cement self-flowing castable (9) for fixation.

4. The anti-fault type diffused integral permeable brick according to claim 1, characterized in that: The plate (5) includes a T-shaped tenon (501) provided on its inner wall, and arc-shaped air passages (502) are provided on both sides of the T-shaped tenon (501).

5. The anti-fault type diffused integral permeable brick according to claim 1, characterized in that: The dispersion block (6) includes T-slots (601) formed around its perimeter, and the T-slots (601) and T-shaped tenons (501) are adapted to form a mechanical locking structure.

6. The anti-fault type diffused integral permeable brick according to claim 1, characterized in that: The sinking trough (201) has an arc-shaped groove in the middle, and the ventilation slits (202) are arranged in multiple groups in a radial pattern, with the central row corresponding to the tail pipe (8). The top surface is a 15-degree slope, which is used to improve the uniformity of airflow.

7. The anti-fault type diffused integral permeable brick according to claim 4, characterized in that: The plate (5) and the dispersion block (6) are both located at the top of the sinking trough (201), and the dispersion block (6) has a trapezoidal cross-section that is wider at the top and narrower at the bottom.

8. The anti-fault type diffused integral permeable brick according to claim 1, characterized in that: The tailpipe (8) passes through the steel shell (1) and the bottom plate (3) and is connected to the annular air chamber (4).

Images