A modular composite energy-saving kiln car structure

Abstract

A modular composite energy-saving kiln car structure relates to the field of kiln car technology. It includes a kiln car sidewall, which is assembled end-to-end from several sidewall units. The key feature is that several support cylinders are arranged inside the kiln car sidewall in an interlocking manner. The support cylinders are at the same height as the kiln car sidewall. A heat insulation plate is arranged on the upper part of the support cylinders and the kiln car sidewall, with the surface of the heat insulation plate serving as the working layer. In this modular composite energy-saving kiln car structure, both the kiln car sidewall and the internal support cylinders adopt a modular structure. In case of damage, the damaged parts can be quickly removed and replaced without extensive removal of the kiln car's refractory material. After construction, prolonged baking is not required, saving maintenance time and ensuring production rhythm. The individual units constituting the kiln car sidewall and the support cylinders all adopt a cylindrical structure, and the support plates and working layer are jointly formed by the individual units of the kiln car sidewall and the support cylinders, resulting in high load-bearing capacity.

Description

Technical Field

[0001] This utility model relates to the field of kiln car technology, specifically to a modular composite energy-saving kiln car structure. Background Technology

[0002] Tunnel kilns and shuttle kilns play an important role in industry. They are essential thermal equipment for producing refractory bricks, ceramics, precision thermal components, and many raw materials that require heat treatment. Kiln cars are important tools for supporting and transporting these materials.

[0003] During operation, kiln cars repeatedly undergo multiple steps, including loading materials, heating, cooling, unloading, and discharging. In existing technology, a perimeter structure is installed on the surface of the kiln car's steel plate. This perimeter structure serves for heat transfer and load-bearing, and is traditionally constructed using refractory bricks. However, in actual use, the refractory bricks at the edges of the kiln car experience significant thermal stress due to high thermal shock in some areas and heat exchange with the bottom, making them prone to breakage. The existing kiln car structure has the following problems:

[0004] (1) When the kiln car is inside the kiln, the structure around its edge is subjected to a large thermal shock and there is heat exchange with the bottom, which generates a large thermal stress. Therefore, it is easy to break. After the breakage occurs, the material on the kiln car will become unstable and collapse, affecting production safety. In severe cases, it will cause the kiln to stop.

[0005] (2) Replacing damaged parts of the kiln car is quite difficult. The common kiln car structure is a solid structure. When the kiln car side structure is damaged and needs to be replaced, it often requires large-scale dismantling or complete replacement. In particular, when the edge part of the kiln car is made of cast refractory material, it requires a long baking time before it can be put into use, which will greatly affect the production progress. At the same time, the dismantling and repair will often damage the filling inside the kiln car. Option 1: Chinese utility model patent with publication number CN213273763U, application date October 19, 2020, entitled "A type of edge brick for a kiln car and a kiln car edge structure constructed therefrom"; and Option 2: Chinese utility model patent with publication number CN 213687879 U, application date October 9, 2020, entitled "A type of kiln car". Both of these options describe a spliced ​​edge structure. However, the edge structure in Option 1 is hollow, which reduces the weight of the kiln car but has poor load-bearing capacity. The edge structure in Option 2 does not serve a load-bearing function.

[0006] Therefore, designing a kiln car structure that is easy to replace after damage and has high load-bearing capacity has become an urgent problem to be solved in this field. Utility Model Content

[0007] The technical problem this invention aims to solve is to overcome the shortcomings of existing technologies and provide a modular kiln car structure that allows for quick removal and replacement of damaged parts without extensive dismantling of the kiln car's refractory materials. Furthermore, it eliminates the need for prolonged baking after construction. This modular composite energy-saving kiln car structure saves maintenance time and ensures production rhythm.

[0008] The technical solution adopted by this utility model to solve its technical problem is: the modular composite energy-saving kiln car structure includes a kiln car side wall, which is formed by splicing several side wall units end to end. The feature is that: several support cylinders are arranged in an interlocking manner inside the kiln car side wall, the support cylinders are at the same height as the kiln car side wall, and heat insulation plates are arranged on the upper part of the support cylinders and the kiln car side wall, the surface of the heat insulation plate is the working layer.

[0009] Preferably, the side unit is a hollow cylindrical structure.

[0010] Preferably, the perimeter unit includes corner pieces at the four corners and several edge pieces arranged between adjacent corner pieces, with adjacent edge pieces connected to each other and edge pieces connected to corner pieces by interlocking.

[0011] Preferably, insulation layers are filled inside the perimeter cylindrical structure, the support cylindrical structure, and the perimeter of the kiln car.

[0012] Preferably, the bottom surface of the heat insulation board has a protrusion corresponding to the position of the opening of the side unit cylinder, and the protrusion on the bottom surface of the heat insulation board is embedded in the opening of the side unit cylinder.

[0013] Preferably, a bottom layer is provided, the kiln car side is arranged around the bottom layer, and an insertion port for accommodating the support cylinder is opened on the surface of the bottom layer.

[0014] Preferably, the thickness of the bottom layer is 20mm to 50mm.

[0015] Preferably, the thickness of the outer wall of the corner block and the edge block is 50mm~100mm, the thickness of the inner wall is 25mm~60mm, and the wall thickness of the support cylinder is 25mm~60mm.

[0016] Preferably, the insulation board is made up of multiple panels spliced ​​together, and the thickness of the panels is 50mm~150mm.

[0017] Preferably, a heat insulation plate with a thickness of 8mm to 30mm is provided on the inner wall of the kiln car side.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] In the modular composite energy-saving kiln car structure of this application, both the kiln car sidewalls and the internal support cylinders adopt a modular structure. In the event of damage, the damaged parts can be quickly removed and replaced without extensive dismantling of the kiln car's refractory materials. After construction, prolonged baking is not required. This saves maintenance time and ensures production rhythm.

[0020] The individual components that make up the kiln car perimeter, as well as the support cylinder, all adopt a cylindrical structure. Together, the individual components of the kiln car perimeter and the support cylinder support the pallet and the working layer, and the overall structure has high load-bearing capacity.

[0021] The interlocking connections between all the edge blocks in the kiln car's perimeter, as well as between the edge blocks and the corner blocks, ensure the stability of the kiln car's perimeter structure.

[0022] Each panel of the pallet is supported by at least four cylindrical components, consisting of corner blocks and / or edge blocks and / or support cylinders, ensuring the stability of the structure. Attached Figure Description

[0023] Figure 1 This is a top view of Embodiment 1 of a modular composite energy-saving kiln car structure.

[0024] Figure 2 for Figure 1 Sectional view along the AA direction.

[0025] Figure 3 for Figure 1 The view omits the working layer, pallet, and the internal insulation layer around the kiln car.

[0026] Figure 4 Example 2 of the modular composite energy-saving kiln car structure corresponds to Figure 2 The view.

[0027] The components are: 1. pallet; 2. working layer; 3. kiln car sidewall; 4. insulation layer; 5. support cylinder; 6. heat insulation layer; 7. bottom layer; 8. insulation board; 9. corner block; 10. edge block. Detailed Implementation

[0028] Figures 1-3 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0029] Example 1:

[0030] like Figures 1-2As shown, a modular composite energy-saving kiln car structure includes a bottom layer 7, which is located on the surface of the kiln car body steel plate. Similar to existing technologies, the bottom wheels of the kiln car are provided at the bottom of the steel plate. A kiln car side panel 3 is arranged around the perimeter of the upper surface of the bottom layer 7, and a support plate 1 is covered on the upper surface of the kiln car side panel 3. The surface of the support plate 1 is the working layer 2. The thickness of the bottom layer 7 is 20mm~50mm, preferably 30mm.

[0031] Combination Figure 3 The kiln car sidewall 3 is formed by connecting several corner blocks 9 and side blocks 10 end to end. The kiln car sidewall 3 has a rectangular structure. The side blocks 10 are connected sequentially to form the two long sides and two short sides of the kiln car sidewall 3. The corner blocks 9 are arranged at the four corners of the kiln car sidewall 3. Grooves and protrusions are respectively opened on the surface of each side block 10 along the arrangement direction of its side length. Grooves and protrusions are respectively set on the two end faces of each corner block 9 corresponding to the side block 10. This realizes the interlocking connection between all the side blocks 10 in the kiln car sidewall 3, as well as between the side blocks 10 and the corner blocks 9, ensuring the stability of the kiln car sidewall 3 structure.

[0032] Grooves are provided in the middle of corner block 9 and side block 10, making corner block 9 and side block 10 hollow cylindrical structures. Insulation layer 6 is filled inside the cylindrical structures of corner block 9 and side block 10 respectively.

[0033] Furthermore, in corner block 9 and edge block 10, the thickness of the outer sidewall is 50mm~100mm; the thickness of the inner sidewall is 25mm~60mm, and preferably 40mm.

[0034] In the internal space formed by the kiln car side wall 3, multiple support cylinders 5 are evenly arranged. The upper surface of the bottom layer 7 is provided with a corresponding insertion port for the support cylinder 5. The bottom of the support cylinder 5 is inserted into the corresponding insertion port to achieve positioning. After the support cylinder 5 is inserted into the insertion port on the surface of the bottom layer 7, its upper end is flush with the upper edge of the kiln car side wall 3.

[0035] The wall thickness of the support cylinder 5 is 25mm to 60mm, preferably 40mm, and the interior of each support cylinder 5 cylindrical structure is also filled with a heat insulation layer 6.

[0036] After the support cylinder 5 is arranged inside the kiln car side enclosure 3, a heat insulation plate 8 is installed on the inner wall of the kiln car side enclosure 3, and the heat insulation plate 8 is at the same height as the kiln car side enclosure 3. The heat insulation plate 8 is made of fiber insulation board with a thickness of 8mm to 30mm. In this embodiment, a heat insulation layer 4 is also provided on the inner bottom surface of the kiln car side enclosure 3, and then a heat insulation layer 6 is filled again inside the kiln car side enclosure 3 (outside the support cylinder 5). Figure 3 omitted).

[0037] The insulation layer 6 is made of one or more of the following materials: lightweight fiber, silica fume, fly ash, rice husk ash, lightweight clay powder, lightweight mullite powder, etc.

[0038] The support plate 1 is laid on top of the kiln car side wall 3 and the support cylinder 5, and the support plate 1 also serves to seal the upper end of the kiln car side wall 3. The support plate 1 is composed of multiple cast-in-place precast slabs joined together, and the multiple slabs that make up the support plate 1 are preferably arranged along the length of the kiln car. The thickness of the precast slabs is 50mm~150mm.

[0039] The surfaces of the plates constituting pallet 1 are planar. On the bottom surface of the plates, corresponding to the positions of the corner blocks 9 and the openings of the side blocks 10, protrusions are provided, with a height of 5mm to 20mm. Therefore, the outer periphery of the lower surface of pallet 1 is interlocked with the corner blocks 9 and the side blocks 10. After pallet 1 is placed on the upper part of the kiln car sidewall 3, each plate constituting pallet 1 is supported by at least four cylindrical components composed of corner blocks 9 and / or side blocks 10 and / or support cylinders 5, ensuring structural stability.

[0040] The working layer 2 is arranged on the upper surface of the pallet 1. The working layer 2 is made of refractory bricks. The working layer 2 is set as a single-sided or double-layer structure, and the joint between two adjacent refractory bricks is filled with fire mortar.

[0041] In practical use, the most vulnerable parts of the kiln car are cracks and erosion at the kiln car sidewalls (3) and the top working layer (2). The modular composite energy-saving kiln car structure of this application allows for rapid repair of the kiln car when such damage occurs. For example, when the support cylinder (5) is damaged, the working layer (2) can be removed, the prefabricated parts of the pallet (1) can be disassembled, the damaged support cylinder (5) can be removed, and a new support cylinder (5) can be replaced. Then, the pallet (1) and working layer (2) can be rearranged.

[0042] Example 2:

[0043] The difference between this embodiment and Embodiment 1 is that: Figure 4 As shown, in this embodiment, the heat insulation layer 4 is omitted.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A modular composite energy-saving kiln car structure, comprising a kiln car sidewall (3), wherein the kiln car sidewall (3) is formed by splicing together several sidewall units end to end, characterized in that: Several support cylinders (5) are arranged in the inside of the kiln car side wall (3) in an interlocking manner. The support cylinders (5) are at the same height as the kiln car side wall (3). A tray (1) is arranged on the upper part of the support cylinders (5) and the kiln car side wall (3). The surface of the tray (1) is the working layer (2).

2. The modular composite energy-saving kiln car structure according to claim 1, characterized in that: The outer casing is a hollow cylindrical structure.

3. The modular composite energy-saving kiln car structure according to claim 1 or 2, characterized in that: The edge unit includes corner pieces (9) at the four corners and several edge pieces (10) arranged between adjacent corner pieces (9). The adjacent edge pieces (10) are connected to each other and the edge pieces (10) are connected to the corner pieces (9) by interlocking.

4. The modular composite energy-saving kiln car structure according to claim 2, characterized in that: The interior of the single cylindrical structure of the side wall, the interior of the cylindrical structure of the support cylinder (5) and the interior of the side wall of the kiln car (3) are respectively filled with a heat insulation layer (6).

5. The modular composite energy-saving kiln car structure according to claim 2, characterized in that: The bottom surface of the tray (1) is provided with a protrusion corresponding to the position of the opening of the side unit. The protrusion on the bottom surface of the tray (1) is embedded in the opening of the side unit.

6. The modular composite energy-saving kiln car structure according to claim 1, characterized in that: A bottom layer (7) is provided, and the kiln car side wall (3) is arranged around the bottom layer (7). An insertion port for accommodating the support cylinder (5) is opened on the surface of the bottom layer (7).

7. The modular composite energy-saving kiln car structure according to claim 6, characterized in that: The thickness of the bottom layer (7) is 20mm~50mm.

8. The modular composite energy-saving kiln car structure according to claim 3, characterized in that: The thickness of the outer wall of the corner block (9) and the edge block (10) is 50mm~100mm, the thickness of the inner wall is 25mm~60mm, and the wall of the support cylinder (5) is 25mm~60mm.

9. The modular composite energy-saving kiln car structure according to claim 1, characterized in that: The pallet (1) is made up of multiple plates, with a thickness of 50mm to 150mm.

10. The modular composite energy-saving kiln car structure according to claim 1, characterized in that: A heat insulation plate (8) with a thickness of 8mm to 30mm is provided on the inner wall of the kiln car side (3).

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