Kiln refractory brick with self-locking convex-concave structure

Abstract

The utility model discloses a kind of kiln firebrick with self-locking convex-concave structure, belong to refractory technical field.Firebrick body top surface and bottom surface are respectively provided with mutually matched vertical splicing structure, one side and another opposite side are respectively provided with mutually matched horizontal splicing structure.Vertical splicing structure includes big bulge and small bulge, and with it adaptation big recess and small recess;Horizontal splicing structure includes side edge boss and with it adaptation side edge recess. Among them, big bulge and side edge boss are designed as trapezoidal structure, and the inclined locking slope thereof forms wedge-shaped locking cooperation with the side wall of corresponding recess, so as to realize reliable self-locking when vertically stacking and horizontally side by side.The utility model effectively solves the problem that existing firebrick relies on refractory clay connection and has unstable structure by integrated convex-concave structure, has the beneficial effects of convenient and efficient construction, high strength of masonry structure, good overall sealing and the like.

Description

Technical Field

[0001] This utility model relates to the field of refractory materials technology, and in particular to a kiln refractory brick with a self-locking convex-concave structure. Background Technology

[0002] Kilns are indispensable thermal equipment in industries such as metallurgy, chemical engineering, and building materials. Their internal lining is typically constructed from a large number of refractory bricks. As the basic structural unit of the kiln, the quality of the refractory bricks directly affects the kiln's structural stability, service life, and thermal efficiency.

[0003] In existing kiln construction techniques, standard rectangular refractory bricks are typically used, and refractory mortar is used as a binder and grout for layering. This construction method has significant shortcomings in practice. The construction process relies entirely on the worker's skill level to ensure the alignment, flatness, and uniformity of the brick joints. This not only makes the construction process cumbersome and time-consuming but also inefficient.

[0004] More importantly, during the long-term high-temperature operation of the kiln, the furnace body undergoes repeated heating and cooling processes, causing stress between the refractory bricks and the refractory mortar used as a binder due to the difference in their coefficients of thermal expansion. Long-term cyclical thermal stress degrades the performance of the refractory mortar, leading to cracking, pulverization, and even detachment. Once the refractory mortar in the brick joints fails, the connection between the bricks will loosen. This not only severely compromises the airtightness of the furnace body, resulting in enormous energy waste, but also reduces the stability of the entire masonry structure, potentially causing localized collapse and posing serious safety hazards. The fundamental problem with existing technology is that the bricks themselves lack structural locking capabilities; the overall stability of the masonry relies entirely on the bonding material, whose performance degrades over time.

[0005] Therefore, this utility model proposes a kiln refractory brick with a self-locking convex-concave structure to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the fact that existing kiln refractory bricks lack an effective self-locking structure during construction, resulting in difficulties in splicing and alignment, low construction efficiency, and poor structural stability and decreased airtightness over time due to reliance on refractory mortar for connection, this utility model aims to provide a kiln refractory brick with a self-locking convex-concave structure that has been improved to effectively solve the above problems.

[0007] This utility model provides a kiln refractory brick with a self-locking convex-concave structure, which includes a specially made refractory brick. The top surface of the specially made refractory brick is integrally formed with large and small protrusions, and the bottom surface is provided with large and small grooves; one side of the brick is integrally formed with a side protrusion, and the other opposite side is provided with a side groove.

[0008] The large protrusion on the top surface is a trapezoidal block extending along the length of the specially made refractory brick, while the small protrusion is a rectangular block located at one end of the large protrusion along its length. These two protrusions are arranged together along the central axis of the top surface of the specially made refractory brick. Correspondingly, the outline of the large groove on the bottom surface matches the outline of the large protrusion, and the outline of the small groove matches the outline of the small protrusion.

[0009] Furthermore, the side protrusion on one side is a trapezoidal ridge extending along the height of the specially designed refractory brick, and this ridge is arranged along the center line of the side's height direction. Correspondingly, the contour of the side groove on the opposite side matches the contour of the side protrusion. Through these integrally formed protrusion and groove structures, the bricks can achieve self-alignment and structural locking when spliced ​​vertically and horizontally.

[0010] Preferably, the trapezoidal block of the large protrusion is an isosceles trapezoidal structure, and both non-parallel sides of the large protrusion are set as inwardly inclined locking slopes. This inclined design is to generate a wedge effect with the sidewall of the groove when vertically spliced, thereby forming a more reliable locking force.

[0011] Preferably, as a structure that cooperates with the large protrusion, the sidewall contour of the large groove matches the locking bevel of the large protrusion, so that a first wedge locking fit can be achieved during vertical splicing. This fit greatly enhances the brick's resistance to shear and its ability to prevent misalignment in the vertical direction.

[0012] Preferably, the trapezoidal protrusion of the side protrusion is an isosceles trapezoidal structure, and the upper and lower non-parallel sides of this side protrusion are both set as inwardly inclined locking bevels, so that when bricks are spliced ​​side by side in the horizontal direction, the bevels can be used to provide effective horizontal locking force.

[0013] Preferably, as a corresponding mating structure, the sidewall contour of the side groove matches the locking bevel of the side protrusion, so that the bricks can achieve a second wedge locking fit when they are horizontally spliced. This structure effectively prevents the horizontal separation of the bricks caused by internal stress or external vibration.

[0014] Preferably, in order to achieve a clear distinction between primary and secondary positioning and load-bearing functions, the height of the rectangular block of the small protrusion is lower than that of the large protrusion, so that it mainly plays an auxiliary positioning function during the splicing process, which can guide the bricks to be aligned quickly and simplify the masonry operation.

[0015] Preferably, the depth of the small groove is matched to the height of the small protrusion, corresponding to the height of the small protrusion. This size matching ensures that when the structure is vertically assembled and subjected to stress, the larger protrusion and the larger groove, which have higher structural strength, can make contact first and bear the main pressure, thereby ensuring the long-term load-bearing stability of the overall masonry.

[0016] Preferably, in order to make the locking force distribution of the bricks in three-dimensional space more reasonable and balanced, the length extension axis of the large protrusion is set perpendicular to the height extension axis of the side protrusion. This orthogonal locking system design can further improve the torsional and deformation resistance of the overall masonry structure.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problems of reliance on refractory mortar, difficulty in splicing and alignment, and low construction efficiency in the prior art by setting mutually compatible vertical splicing structures and horizontal splicing structures on the top, bottom and two sides of specially made refractory bricks, so that the bricks can be self-locked by the interlocking of the convex and concave structures. It achieves the technical effect of simplifying construction and rapid masonry.

[0019] 2. This utility model, by designing the vertical and horizontal protrusions and grooves into a matching trapezoidal structure, utilizes their inclined surfaces to form a stable wedge-shaped locking fit, solving the problems of poor overall masonry integrity and inability to effectively resist shear force and displacement in the prior art, and achieving the technical effect of significantly enhancing the strength and stability of masonry structures.

[0020] 3. This utility model, through the tight wedge-shaped fit between the protrusion and the groove, enables an effective physical seal between the bricks, solving the problem in the prior art where the airtightness of the brick joints is easily reduced due to the shrinkage or fall-off of refractory mortar. It achieves the technical effects of improving the overall airtightness of the kiln, reducing heat loss, and improving thermal efficiency. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a kiln refractory brick with a self-locking convex-concave structure proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of a large protruding block in a kiln refractory brick with a self-locking convex-concave structure proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the side protrusion of a kiln refractory brick with a self-locking convex-concave structure proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of a small protrusion block in a kiln refractory brick with a self-locking convex-concave structure proposed in this utility model.

[0025] Legend:

[0026] 1. Special refractory bricks; 2. Large grooves; 3. Side grooves; 4. Side protrusions; 5. Large raised blocks; 6. Small raised blocks; 7. Small grooves. Detailed Implementation

[0027] Example:

[0028] Reference Figures 1 to 4 This utility model provides a kiln refractory brick with a self-locking convex-concave structure, which aims to solve the problems in the prior art where the kiln refractory brick lacks a self-locking structure during construction, resulting in difficulties in splicing and alignment, low construction efficiency, and poor stability of the masonry structure.

[0029] like Figure 1 As shown, the kiln refractory brick with self-locking convex and concave structure includes a special refractory brick 1, which is used as the basic unit for kiln construction; the top surface of the special refractory brick 1 is integrally formed with a vertical protrusion structure for vertical splicing, and the bottom surface of the special refractory brick 1 is provided with a vertical groove structure for vertical splicing; one side of the special refractory brick 1 is integrally formed with a side protrusion 4 for horizontal splicing, and the other opposite side of the special refractory brick 1 is provided with a side groove 3 for horizontal splicing.

[0030] Reference Figure 1 , Figure 2 and Figure 4 The vertical protrusion structure includes a large protrusion 5 and a small protrusion 6; the vertical groove structure includes a large groove 2 and a small groove 7; the large protrusion 5 is arranged along the central axis of the top surface of the special refractory brick 1; the large protrusion 5 is a trapezoidal block extending along the length direction of the special refractory brick 1; the small protrusion 6 is a rectangular block set at one end of the length direction of the large protrusion 5.

[0031] Reference Figure 1 , Figure 2 and Figure 4 The bottom surface of the specially made refractory brick 1 is provided with a large groove 2 and a small groove 7; the outline of the large groove 2 matches the outline of the large protrusion 5, and the outline of the small groove 7 matches the outline of the small protrusion 6; specifically, the trapezoidal block of the large protrusion 5 is an isosceles trapezoidal structure, and the two non-parallel sides of the large protrusion 5 are both set as inwardly inclined locking slopes; the side wall outline of the large groove 2 matches the locking slope of the large protrusion 5. When the upper and lower specially made refractory bricks 1 are vertically spliced, the large protrusion 5 is embedded in the large groove 2 to achieve the first wedge-shaped locking fit during vertical splicing;

[0032] At the same time, the height of the rectangular block of the small protrusion 6 is lower than the height of the large protrusion 5; the depth of the small groove 7 is matched with the height of the small protrusion 6; this structural fit ensures that when vertically spliced, the large protrusion 5 and the large groove 2 make priority contact and bear the main pressure, while the small protrusion 6 and the small groove 7 are used to provide auxiliary positioning functions.

[0033] Please refer to the following carefully. Figure 1 and Figure 3A side groove 3 is provided on the other opposite side of the special refractory brick 1; the side protrusion 4 is a trapezoidal protrusion extending along the height direction of the special refractory brick 1, and the side protrusion 4 is arranged along the center line of the height direction of the side side; specifically, the trapezoidal protrusion of the side protrusion 4 is an isosceles trapezoidal structure, and the upper and lower non-parallel sides of the side protrusion 4 are both set as inwardly inclined locking slopes; the outline of the side groove 3 matches the outline of the side protrusion 4, and the side wall outline of the side groove 3 matches the locking slope of the side protrusion 4. When the left and right special refractory bricks 1 are horizontally spliced, the side protrusion 4 is embedded in the side groove 3 to achieve a second wedge locking fit during horizontal splicing;

[0034] The length extension axis of the large protrusion 5 is perpendicular to the height extension axis of the side protrusion 4.

[0035] As a preferred embodiment, to improve the locking effect and centering accuracy of vertical splicing, please refer to... Figure 2 The trapezoidal block of the large protrusion 5 is specifically an isosceles trapezoidal structure, and both non-parallel sides of the large protrusion 5 are set as inwardly inclined locking slopes. Correspondingly, the sidewall contour of the large groove 2 matches the locking slope of the large protrusion 5, and the first wedge locking fit is formed by the cooperation between the slopes.

[0036] As another preferred embodiment, to improve the stability and fixation reliability of the lateral splicing, please refer to... Figure 3 The trapezoidal protrusion of the side protrusion 4 is specifically an isosceles trapezoidal structure, and the upper and lower non-parallel sides of the side protrusion 4 are both set as inwardly inclined locking slopes. Correspondingly, the side wall contour of the side groove 3 matches the locking slope of the side protrusion 4, and the second wedge locking fit is formed by the cooperation between the slopes.

[0037] As another preferred implementation, in order to separate the main and auxiliary positioning functions and ensure that the main load-bearing structure bears the load preferentially, please refer to... Figure 2 and Figure 4 The height of the rectangular block of the small protrusion 6 is lower than the height of the large protrusion 5. Correspondingly, the depth of the small groove 7 is matched with the height of the small protrusion 6. This height difference design ensures that when stacked vertically, the large protrusion 5 and the large groove 2 make contact first and bear the main pressure.

[0038] As another preferred embodiment, in order to make the locking force distribution of the bricks in three-dimensional space more balanced and enhance the stability of the overall masonry structure, the length extension axis of the large protrusion 5 is set perpendicular to the height extension axis of the side protrusion 4.

[0039] The working principle is as follows:

[0040] When stacking bricks vertically, the large protrusion 5 and small protrusion 6 on the top surface of the lower specially made refractory brick 1 are aligned with the large groove 2 and small groove 7 on the bottom surface of the upper specially made refractory brick 1, respectively. Since the large protrusion 5 has an inwardly inclined locking slope and the large groove 2 has a matching side wall profile, a first wedge-shaped locking fit is formed between the two under the action of gravity or external force, thereby achieving vertical positioning and generating locking force in the horizontal direction, effectively preventing the bricks from shifting vertically and horizontally. At the same time, the lower small protrusion 6 cooperates with the small groove 7 to play an auxiliary alignment role and ensure that the large protrusion 5 and the large groove 2, as the main load-bearing and locking structures, have priority contact and bear force.

[0041] When lateral splicing is performed, the side protrusion 4 on one side of a special refractory brick 1 is aligned with and embedded into the side groove 3 on the opposite side of the adjacent special refractory brick 1. Since the upper and lower non-parallel sides of the side protrusion 4 are both set as inwardly inclined locking slopes, and the side groove 3 has a matching side wall profile, this structure makes the two form a second wedge-shaped locking fit in the horizontal direction, effectively preventing the bricks from separating in the splicing plane.

[0042] Through the synergistic effect of the first wedge locking fit in the vertical direction and the second wedge locking fit in the horizontal direction, multiple specially made refractory bricks 1 can quickly and stably self-lock into a whole without complicated alignment operations during the masonry process, which solves the problems of low splicing efficiency and unstable masonry structure in the existing technology.

Claims

1. A kiln refractory brick with a self-locking convex-concave structure, comprising a specially made refractory brick (1); characterized in that, The top surface of the specially made refractory brick (1) is integrally formed with a large protrusion (5) and a small protrusion (6) for vertical splicing. The bottom surface of the specially made refractory brick (1) is provided with a large groove (2) and a small groove (7) for vertical splicing. The large protrusion (5) is a trapezoidal block extending along the length direction of the specially made refractory brick (1). The small protrusion (6) is a rectangular block located at one end of the length direction of the large protrusion (5). The large protrusion (5) and the small protrusion (6) are arranged along the central axis of the top surface of the specially made refractory brick (1). The outline of the large groove (2) is consistent with that of the large protrusion (5). The outline of the protrusion (5) matches the outline of the small groove (7) and the outline of the small protrusion (6); one side of the special refractory brick (1) is integrally formed with a side protrusion (4) for horizontal splicing, and the other opposite side of the special refractory brick (1) is provided with a side groove (3) for horizontal splicing; the side protrusion (4) is a trapezoidal protrusion extending along the height direction of the special refractory brick (1), and the side protrusion (4) is arranged along the center line of the height direction of the side; the outline of the side groove (3) matches the outline of the side protrusion (4).

2. The kiln refractory brick with a self-locking convex-concave structure according to claim 1, characterized in that, The trapezoidal block of the large protrusion (5) is an isosceles trapezoidal structure, and the two non-parallel sides of the large protrusion (5) are both set as inwardly inclined locking slopes.

3. The kiln refractory brick with a self-locking convex-concave structure according to claim 2, characterized in that, The sidewall profile of the large groove (2) matches the locking ramp of the large protrusion (5) to achieve a first wedge locking fit when vertically spliced.

4. The kiln refractory brick with a self-locking convex-concave structure according to claim 1, characterized in that, The trapezoidal protrusion of the side protrusion (4) is an isosceles trapezoidal structure, and the upper and lower non-parallel sides of the side protrusion (4) are both set as inwardly inclined locking slopes.

5. The kiln refractory brick with a self-locking convex-concave structure according to claim 4, characterized in that, The sidewall profile of the side groove (3) matches the locking slope of the side protrusion (4) to achieve a second wedge locking fit during lateral splicing.

6. The kiln refractory brick with a self-locking convex-concave structure according to claim 1, characterized in that, The height of the rectangular block of the small protrusion (6) is lower than the height of the large protrusion (5), and the small protrusion (6) is used to provide auxiliary positioning function when vertically splicing.

7. The kiln refractory brick with a self-locking convex-concave structure according to claim 6, characterized in that, The depth of the small groove (7) is adapted to the height of the small protrusion (6) to ensure that when vertically spliced, the large protrusion (5) and the large groove (2) make priority contact and bear the main pressure.

8. The kiln refractory brick with a self-locking convex-concave structure according to claim 1, characterized in that, The length extension axis of the large protrusion (5) is perpendicular to the height extension axis of the side protrusion (4).

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