Structure for preventing high temperature of kiln shell at brick dragging part

Abstract

The utility model relates to the technical field of industrial kilns, and particularly discloses a structure for preventing high temperature of a kiln shell at a brick dragging part, which comprises a main body, refractory bricks are laid on the inner wall of the main body, a plugging ring is arranged on the outer wall of the main body corresponding to the refractory bricks, a nano insulation board is arranged above the plugging ring, and an integral sealing beam is poured between the inner wall of the main body and the nano insulation board; an anchoring part is connected between the insulation board and the integral sealing beam; the integral sealing beam structure is adopted, brick joints are avoided, and gas blow-by to the kiln shell due to damage of refractory bricks is avoided; and meanwhile, the calcium silicate board material is replaced by a waterproof nano heat-insulating board material, so that the heat-insulating material cannot be damaged even when the kiln is dried.

Description

Technical Field

[0001] This application relates to the field of industrial kiln technology, and in particular to a structure for preventing high temperatures in the kiln shell at the brick dragging part. Background Technology

[0002] The double-chamber kiln, also known as a double-chamber parallel-flow regenerative lime kiln, feeds fuel from the top of the calcination zone, which flows parallel to the raw material. Since the fuel is injected from the top of the calcination zone, the raw material can absorb most of the heat released by the fuel at this point. Moreover, the average temperature of the calcination zone is 950℃. Another important feature of the double-chamber kiln is its heat storage function, which uses heat storage to preheat a portion of the combustion air. The thermal characteristics of parallel-flow calcination and counter-flow heat storage determine that the double-chamber kiln has a very high thermal efficiency, and its heat consumption is lower than that of all types of lime kilns, such as rotary kilns and sleeve kilns.

[0003] The existing lime kiln with a double-chamber structure (the approximate structure can be found in the patent document with announcement number CN221522421U) generally uses refractory bricks and / or calcium silicate boards to construct the main brick-dragging section (also known as the calcination zone). During kiln drying, the calcium silicate boards are prone to moisture absorption. Once damp, the gas generated inside the kiln cannot be blocked and leaks to the surface of the kiln shell, resulting in high temperatures in the kiln shell. This can also cause significant heat damage and require kiln shutdown for maintenance. Utility Model Content

[0004] The purpose of this application is to provide a structure for preventing high temperatures in the kiln shell at the brick dragging part in order to solve the above problems.

[0005] To achieve the above objectives, the technical solution of this application is as follows:

[0006] A structure for preventing high temperatures in the kiln shell at the brick-dragging section includes a main body, the inner wall of which is lined with refractory bricks, a sealing ring corresponding to the refractory bricks on the outer wall of the main body, a nano-insulation board above the sealing ring, an integral sealing beam cast between the inner wall of the main body and the nano-insulation board, and an anchor connecting the insulation board and the integral sealing beam.

[0007] Preferably, the sealing ring is cast in shape.

[0008] Preferably, a triangular support frame is provided between the sealing ring and the nano-insulation board, and the interior of the triangular support frame is provided with heat insulation material.

[0009] Preferably, thermal insulation cotton is provided between the refractory brick and the integral sealing beam.

[0010] Preferably, a U-shaped expansion plate is provided between the refractory brick and the integral sealing beam, with the bent end of the U-shaped expansion plate facing the interior of the kiln.

[0011] Preferably, the outer peripheral wall of the U-shaped expansion plate is provided with a limiting rib, and the side of the limiting rib away from the U-shaped expansion plate is inclined toward the bending end.

[0012] Preferably, the anchor includes a pre-fixed section connected to the nano-insulation board and a limiting section connected to the integral sealing beam; the pre-fixed section is provided with a fixing diagonal bar, the limiting section is provided with a bending limiting rod, the bent end of the bending limiting rod is connected to the limiting section, the bending limiting rod is provided with three sets spaced circumferentially, and the bending limiting rod is also provided with a connecting hole for increasing the connection strength between the anchor and the integral sealing beam.

[0013] Preferably, the limiting section is further provided with an inclined limiting rod, and the inclined limiting rod is provided in three sets at circumferential intervals. Each set of the inclined limiting rod is provided with a limiting snap groove for increasing the strength of the anchor and the overall sealing beam.

[0014] The kiln shell high-temperature structure for preventing brick dragging is disclosed in this application. This application adopts an integral sealed beam structure, which will not have brick gaps and will not cause gas leakage to the kiln shell due to damage to the refractory bricks. At the same time, the calcium silicate board material is replaced by a waterproof nano-insulation board material, which will not be damaged even when the kiln is being dried. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0017] Figure 3 This is a schematic diagram of the U-shaped expansion plate structure in this application;

[0018] Figure 4 This is a schematic diagram of the anchor structure in this application;

[0019] Figure 5 for Figure 4 Enlarged view of a portion of point B in the middle;

[0020] Figure 6 This is a partially enlarged schematic diagram of the tilting limit rod in this application.

[0021] In the picture:

[0022] 1. Anchor; 10. Pre-fixed section; 100. Fixed diagonal bar; 11. Limiting section; 110. Bending limiting rod; 1100. Connecting hole; 111. Inclined limiting rod; 112. Limiting snap-fit ​​groove; 2. Nano insulation board; 4. Thermal insulation material; 5. Refractory brick; 6. Thermal insulation cotton; 7. Sealing ring; 8. Integral sealing beam; 9. U-shaped expansion plate; 90. Limiting rib plate. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present application, and therefore only show the components relevant to the present application.

[0024] like Figure 1-6 As shown, a structure for preventing high temperature in the kiln shell of the brick-dragging part includes a main body, the inner wall of the main body is lined with refractory bricks 5, the outer wall of the main body is provided with a sealing ring 7 corresponding to the refractory bricks 5, a nano-insulation board 2 is provided above the sealing ring 7, an integral sealing beam 8 is cast between the inner wall of the main body and the nano-insulation board 2, and an anchor 1 is connected between the nano-insulation board 2 and the integral sealing beam 8.

[0025] In the high-temperature structure of the kiln shell to prevent brick slippage, the main body is the foundational load-bearing component of the entire structure. The inner wall of the main body is lined with refractory bricks 5. Refractory bricks 5 have excellent high-temperature resistance, capable of withstanding the high-temperature environment of approximately 950℃ in the calcination zone of the double-chamber kiln, effectively blocking the direct erosion of the main structure by the high temperature inside the kiln, protecting the main structure from high-temperature damage, and extending the service life of the kiln. Sealing rings 7 are installed on the outer wall of the main body corresponding to the refractory bricks 5. Sealing rings 7 provide initial sealing and blocking, preventing gas leakage from the kiln to the kiln shell surface. A nano-insulation board 2 is installed above the sealing rings 7. The nano-insulation board 2 has an extremely low thermal conductivity, significantly reducing heat loss, improving the kiln's insulation performance, and reducing heat consumption. An integral sealing beam 8 is cast between the inner wall of the main body and the nano-insulation boards 2. The integral sealing beam 8 is integrally formed, providing better sealing performance compared to using refractory bricks 5. This further enhances the sealing and integrity of the structure, effectively preventing gas leakage, while also withstanding certain pressure and stress, ensuring structural stability.

[0026] The nano-insulation board 2 is connected to the integral sealing beam 8 via anchors 1. Anchors 1 act as a framework, primarily enhancing the connection strength between the integral sealing beam 8 and the nano-insulation board 2, ensuring insulation performance and structural stability. This structural design effectively prevents high temperatures in the kiln shell at the brick-dragging section, reduces heat loss, and improves the thermal efficiency of the double-chamber kiln.

[0027] In some further embodiments, the sealing ring 7 is cast in shape.

[0028] The sealing ring 7 is manufactured using a casting process. The cast-molded sealing ring 7 offers better integrity and sealing performance, allowing it to fit tightly against the outer wall of the main body, forming a complete sealed structure that effectively prevents gas leakage from inside the kiln to the kiln shell surface. Compared to traditional main structures, the cast-molded sealing ring 7 eliminates gaps, preventing gas leakage and further improving the kiln's sealing performance. Simultaneously, the cast-molded sealing ring 7 better adapts to the shape and size of the main body's outer wall, resulting in a more secure installation and reducing the likelihood of loosening or detachment, thus ensuring the long-term stability and reliability of the structure.

[0029] In some further embodiments, a triangular support frame is provided between the sealing ring 7 and the nano-insulation board 2, and the interior of the triangular support frame is provided with heat insulation material 4.

[0030] A triangular support frame is installed between the sealing ring 7 and the nano-insulation board 2. This stable triangular structure provides reliable support for the nano-insulation board 2, preventing deformation or sagging during use. The triangular support frame contains insulating material 4, which further enhances its insulation performance, reducing the likelihood of heat transfer to the kiln shell surface and improving the kiln's insulation effect. Simultaneously, the insulating material 4 acts as a buffer, reducing thermal stress between the nano-insulation board 2 and the support frame, thus extending the service life of the nano-insulation board 2. This structural design ensures stable installation of the nano-insulation board 2 while improving the kiln's insulation performance and structural reliability.

[0031] The insulation material 4 can be a nano-insulation material 4.

[0032] In some further embodiments, thermal insulation cotton 6 is provided between the refractory brick 5 and the integral sealing beam 8.

[0033] Thermal insulation cotton 6 is installed between the refractory bricks 5 and the integral sealing beam 8. The thermal insulation cotton 6 has excellent thermal insulation properties, effectively filling the gaps between the refractory bricks 5 and the integral sealing beam 8, reducing heat loss. During kiln operation, the refractory bricks 5 are subjected to high temperatures, while the integral sealing beam 8 has a relatively lower temperature. The presence of the thermal insulation cotton 6 effectively prevents heat transfer from the refractory bricks 5 to the integral sealing beam 8, reducing heat loss from the kiln and improving thermal efficiency. Simultaneously, the thermal insulation cotton 6 also acts as a buffer, reducing thermal stress between the refractory bricks 5 and the integral sealing beam 8, preventing structural damage due to excessive thermal stress, and extending the service life of the kiln.

[0034] Thermal insulation cotton 6 can be nano thermal insulation cotton 6

[0035] In some further embodiments, a U-shaped expansion plate 9 is provided between the refractory brick 5 and the integral sealing beam 8, with the bent end of the U-shaped expansion plate 9 facing the interior of the kiln.

[0036] The U-shaped expansion plate 9 is used to seal the gaps where the insulation cotton 6 is installed, preventing the insulation cotton 6 from directly contacting the interior of the kiln.

[0037] In some further embodiments, a limiting rib 90 is provided on the outer peripheral wall of the U-shaped expansion plate 9, and the side of the limiting rib 90 away from the U-shaped expansion plate 9 is inclined toward the bending end.

[0038] The inclined limiting rib plate 90 forms a barbed structure, which can prevent the U-shaped expansion plate 9 from slipping off.

[0039] In some further embodiments, the anchor 1 includes a pre-fixed section 10 connected to the nano-insulation board 2 and a limiting section 11 connected to the integral sealing beam 8; the pre-fixed section 10 is provided with a fixing diagonal bar 100, and the limiting section 11 is provided with a bending limiting bar 110, the bent end of the bending limiting bar 110 is connected to the limiting section 11, the bending limiting bar 110 is provided with three sets circumferentially spaced, and the bending limiting bar 110 is also provided with a connecting hole 1100 for increasing the connection strength between the anchor 1 and the integral sealing beam 8.

[0040] The fixed diagonal brace 100 increases the friction between the pre-fixed section 10 and the nano-insulation board 2, improving the connection's strength. The limiting section 11 is equipped with a bending limiting rod 110, the bent end of which connects to the limiting section 11. Three sets of bending limiting rods 110 are spaced circumferentially. These three sets of bending limiting rods 110 increase the connection strength between the overall sealing beam 8 and the nano-insulation board 2, and also serve as an inner lining skeleton for the overall sealing beam 8, improving its strength after solidification.

[0041] The bending limit rod 110 is also provided with a connection hole 1100 to increase the connection strength between the anchor 1 and the integral sealing beam 8. When the integral sealing beam 8 is poured, the pouring material can enter the connection hole 1100 to form a mechanical interlock, which further improves the connection strength between the anchor 1 and the integral sealing beam 8, and ensures the thermal insulation effect and the stability of the structure.

[0042] In some further embodiments, the limiting segment 11 is also provided with an inclined limiting rod 111, and the inclined limiting rod 111 is provided with three sets circumferentially spaced, and each set of inclined limiting rods 111 is provided with a limiting snap groove 112 for increasing the strength of the anchor 1 and the overall sealing beam 8.

[0043] When the integral sealing beam 8 is poured, the pouring material can enter the limiting interlocking groove 112 to form a more solid mechanical interlock, which greatly improves the connection strength between the anchor 1 and the integral sealing beam 8, ensures the heat preservation effect and the stability of the entire anti-brick dragging part, and extends the service life of the kiln body.

[0044] In specific implementation, after the bottom refractory bricks 5 of the dragging brick section are laid, the sealing ring 7 is poured first. Then, the refractory bricks 5 corresponding to the sealing ring 7 are laid. Then, nano-insulation cotton 6 and U-shaped expansion plate 9 are set between the later laid refractory bricks 5 and the sealing ring 7 and above the refractory bricks 5. Then, the pre-fixed section 10 of the anchor 1 is fixed on the nano-insulation plate 2. At the same time, the template is set to pour the overall sealing beam 8. After solidification, it is cured for 24 hours and then the formwork is removed.

[0045] This application adopts an integral sealed beam 8 structure, which will not have brick gaps and will not cause gas leakage to the kiln shell due to damage to the refractory bricks 5; at the same time, the calcium silicate board material is replaced by a waterproof nano-insulation board 2 material, which will not damage the insulation material even when the kiln is being dried.

[0046] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A high temperature structure for preventing a brick dragging portion of a kiln shell, characterized by, The application relates to a kiln body, which comprises a main body, the inner wall of the main body is built with fireproof bricks (5), the outer wall of the main body is provided with a sealing ring (7) corresponding to the fireproof bricks (5), a nano heat insulation board (2) is arranged above the sealing ring (7), and a whole sealing beam (8) is cast between the inner wall of the main body and the nano heat insulation board (2); an anchoring piece (1) is connected between the heat insulation board and the whole sealing beam (8).

2. The high temperature structure for preventing the brick dragging area of a kiln shell according to claim 1, wherein, The sealing ring (7) is cast.

3. The high temperature structure for preventing the brick dragging area of a kiln shell according to claim 2, wherein A triangular supporting frame is arranged between the sealing ring (7) and the nano heat insulation board (2), and heat insulation material (4) is arranged in the triangular supporting frame.

4. The high temperature structure for preventing the brick dragging area of a kiln shell according to claim 1, wherein Heat insulation cotton (6) is arranged between the fireproof bricks (5) and the whole sealing beam (8).

5. The high temperature structure for preventing the brick dragging area of a kiln shell according to claim 4, wherein A U-shaped expansion plate (9) is arranged between the fireproof bricks (5) and the whole sealing beam (8), and the bent end of the U-shaped expansion plate (9) faces the inside of the kiln.

6. The high temperature structure for preventing the brick dragging area of a kiln shell according to claim 5, wherein A limiting rib plate (90) is arranged on the peripheral wall of the U-shaped expansion plate (9), and the side of the limiting rib plate (90) away from the U-shaped expansion plate (9) is inclined towards the bent end.

7. The high temperature structure for preventing the brick dragging area of a kiln shell according to claim 1, wherein The anchoring piece (1) comprises a pre-fixing section (10) connected with the nano heat insulation board (2) and a limiting section (11) connected with the whole sealing beam (8); the pre-fixing section (10) is provided with a fixing inclined rod (100), the limiting section (11) is provided with a bent limiting rod (110), the bent end of the bent limiting rod (110) is connected with the limiting section (11), three groups of the bent limiting rods (110) are circumferentially arranged at intervals, and the bent limiting rod (110) is further provided with a connecting hole (1100) for increasing the connecting strength of the anchoring piece (1) and the whole sealing beam (8).

8. The high temperature structure for preventing the brick dragging area of a kiln shell according to claim 7, wherein The limiting section (11) is further provided with an inclined limiting rod (111), three groups of the inclined limiting rods (111) are circumferentially arranged at intervals, and the inclined limiting rod (111) is provided with a limiting clamping groove (112) for increasing the strength of the anchoring piece (1) and the whole sealing beam (8).

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