Repair protection device for sintering machine tail air bellow
By using a composite fixing method of hexagonal mesh and V-shaped anchor nails in the tail air box and baffle of the sintering machine, and applying a wear-resistant protective layer and manganese steel plate, the problem of easy wear of the air box is solved, effective wear protection is achieved, maintenance costs and air leakage rate are reduced, and service life is extended.
Patent Information
- Application Number
- CN202422991743.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-05
AI Technical Summary
The bellows at the tail of the sintering machine is prone to wear and tear and has serious air leakage, which leads to high maintenance costs, affects production and quality, makes it difficult to effectively control the air leakage rate, and restricts the operation of the green economy.
A hexagonal mesh anchoring layer consisting of hexagonal mesh and V-shaped anchoring nails is installed on the bellows and baffles, and a wear-resistant material protective layer is applied. Combined with a manganese steel plate protective layer, a double protective structure is formed.
It effectively protects the bellows refractory material, reduces repair workload, extends service life, reduces air leakage, lowers maintenance costs, increases service life, and reduces downtime.
Smart Images
Figure CN223484834U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel sintering machine technology, and in particular to a repair and protection device for the tail air box of a sintering machine. Background Technology
[0002] Sintering is a ventilation-based production process, and the sintering machine's air box, as a key component of the sintering machine's flue gas ventilation system, includes the air box itself, side sealing plates of the baffles, and support pipes. During operation, the ventilation system is subjected to high-speed airflow and particulate dust. Key components such as the air box, longitudinal and transverse baffles, and support pipes are prone to wear, leading to air leakage in the sintering machine system and affecting sintering output and quality. Sintering flue gas contains particulate dust. During the long-term operation of the sintering machine at full load, especially in the sintering terminal air box, which is usually located in the last 2-3 sections of the sintering machine, the sintering is completed here, so the air resistance is the lowest, the particulate dust is the most generated, and the air temperature is the highest. In addition, the acidic oxides such as SO2 in the flue gas corrode the air box baffles, causing the damage to the tail air box to be several times or even dozens of times more severe than that of other parts. Repeated repairs are needed to solve the problem of wear of the refractory material of the tail air box. The maintenance cost is high, the air leakage rate of the sintering machine cannot be effectively controlled, and it also seriously restricts the green and economical operation of the sintering machine. Utility Model Content
[0003] The purpose of this utility model is to provide a repair and protection device for the tail air box of a sintering machine, which can effectively and reliably protect the refractory material of the tail air box of the sintering machine and solve the problems of easy erosion and damage to the tail air box and longitudinal and transverse partitions of the sintering machine.
[0004] This utility model provides a repair and protection device for a sintering machine tail air box, comprising: multiple air boxes, each of which has a first full-coverage hexagonal mesh on its four inclined inner wall surfaces, the first full-coverage hexagonal mesh having the same shape as the inner wall surface; first V-shaped anchor nails are welded through the first full-coverage hexagonal mesh, the number of first V-shaped anchor nails per square meter of the first full-coverage hexagonal mesh being greater than or equal to fifteen, the bottom of the first V-shaped anchor nails being welded to the inner wall surface of the air box, and the top of one side of the first V-shaped anchor nails being bent to press down on the first full-coverage hexagonal mesh; longitudinal and transverse partitions are provided between adjacent air boxes, and second full-coverage hexagonal mesh is provided on the partitions, the second full-coverage hexagonal mesh having the same shape as the partitions, second V-shaped anchor nails are welded through the second full-coverage hexagonal mesh, the bottom of the second V-shaped anchor nails being welded to the partitions, and the top of one side of the second V-shaped anchor nails being bent to press down on the second full-coverage hexagonal mesh;
[0005] The first full-coverage hexagonal mesh and the first V-shaped anchor nail, the second full-coverage hexagonal mesh and the second V-shaped anchor nail together constitute the hexagonal mesh anchoring layer. The hexagonal mesh anchoring layer is coated with a wear-resistant material protective layer. The wear-resistant material protective layer is provided with a wear-resistant manganese steel plate protective layer. The wear-resistant manganese steel plate protective layer is fixed to the inner wall of the wind box and the partition plate by bolts and nuts.
[0006] Furthermore, the second V-shaped anchor pins are evenly arranged in a single row or multiple rows on the partition.
[0007] Furthermore, the first V-shaped anchor and the second V-shaped anchor are made of V-shaped stainless steel.
[0008] Furthermore, the wear-resistant manganese steel plate protective layer on the inner wall of the wind box comprises manganese steel plates arranged sequentially, with a 20mm interval between adjacent manganese steel plates, until the inner wall of the wind box is fully covered; bolt holes are provided at the four corners of the manganese steel plates, and the bolts of the bolt nuts are welded to the inner wall of the wind box through the bolt holes.
[0009] Furthermore, the wear-resistant material protective layer is an Al2O3 wear-resistant material or a ceramic wear-resistant material plus steel fiber castable, and the thickness of the wear-resistant material protective layer is 50mm to 70mm.
[0010] This utility model has the following beneficial effects: A repair and protection device for the tail section of a sintering machine, comprising a first full-coverage hexagonal mesh on each of the four inclined inner walls of the wind box, with first V-shaped anchor nails welded through the first full-coverage hexagonal mesh; and a second full-coverage hexagonal mesh on the longitudinal and transverse partitions between adjacent wind boxes, with second V-shaped anchor nails welded through the second full-coverage hexagonal mesh. The first full-coverage hexagonal mesh, the first V-shaped anchor nails, the second full-coverage hexagonal mesh, and the second V-shaped anchor nails together constitute a hexagonal mesh anchoring layer. A wear-resistant material protective layer is coated on the hexagonal mesh anchoring layer, and a wear-resistant manganese steel plate protective layer is placed on top of the wear-resistant material protective layer. The wear-resistant manganese steel plate protective layer is fixed to the inner wall of the wind box and the partitions by bolts and nuts. This device effectively and reliably protects the refractory material of the tail section of the sintering machine, solving the problems of easy erosion and damage to the tail section of the sintering machine and the longitudinal and transverse partitions, reducing repair workload, extending service life, reducing air leakage in the sintering system, and contributing to energy conservation and consumption reduction. This invention employs a composite fixing method of full-coverage hexagonal mesh and V-shaped anchor nails, coated with high-strength wear-resistant material reinforced with steel fibers to form a robust wear-resistant protective layer, extending the service life of the inner wall of the air box. This invention also utilizes a dual-protection structure of manganese steel plate and wear-resistant material to address the problem of severe wear on the tail air box. Compared to previous methods of repeated repairs, this reduces maintenance costs, significantly extends service life, and minimizes downtime during sintering. Attached Figure Description
[0011] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 A schematic diagram of the structure of a repair and protection device for a sintering machine tail air box provided by this utility model;
[0013] Figure 2 A top view schematic diagram of a repair and protection device for the tail air box of a sintering machine provided by this utility model;
[0014] Figure 3 A cross-sectional schematic diagram of a repair and protection device for the tail air box of a sintering machine provided by this utility model;
[0015] Figure 4 A schematic diagram of a V-shaped anchor for a repair and protection device for a sintering machine tail air box provided by this utility model;
[0016] Figure 5 A schematic diagram of the sintering machine's air box setup.
[0017] Illustration: 1-Blowbox; 2-Baffle; 3-First full-coverage hexagonal mesh; 4-First V-shaped anchor nail; 5-Wear-resistant material protective layer; 6-Hexagonal mesh anchor layer; 7-Wear-resistant manganese steel plate protective layer; 8-Bolt and nut; 9-Burning end planetary gear. Detailed Implementation
[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be pointed out that the following detailed description is illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0019] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0020] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions has been enlarged, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.
[0021] Please see Figures 1 to 5 This utility model provides a repair and protection device for a sintering machine tail air box, comprising: multiple air boxes 1, each with a first full-coverage hexagonal mesh 3 arranged on one of the four inclined inner wall surfaces of the air box 1, the first full-coverage hexagonal mesh 3 having a shape consistent with the inner wall surface; the first full-coverage hexagonal mesh 3 being divided and welded according to the shape of the inner wall of the air box 1, the shape matching the shape of the four inner wall surfaces. First V-shaped anchor nails 4 are interspersed and welded within the first full-coverage hexagonal mesh 3, the number of first V-shaped anchor nails 4 per square meter of the first full-coverage hexagonal mesh 3 being greater than or equal to fifteen, the bottom of the first V-shaped anchor nail 4 being welded to the inner wall surface of the air box 1, and one side of the first V-shaped anchor nail 4 being bent and pressing against the first full-coverage hexagonal mesh 3.
[0022] A longitudinal and transverse partition 2 is provided between adjacent bellows 1. A second full-coverage hexagonal mesh is provided on the partition 2. The second full-coverage hexagonal mesh has the same shape as the partition 2. Second V-shaped anchors are welded through the second full-coverage hexagonal mesh. The bottom of the second V-shaped anchor is welded to the partition 2, and the top of one side of the second V-shaped anchor is bent to press down on the second full-coverage hexagonal mesh. Specifically, the second V-shaped anchors are evenly arranged in a single row or multiple rows on the partition 2.
[0023] Specifically, the first V-shaped anchor nail 4 and the second V-shaped anchor nail are made of V-shaped stainless steel. One side maintains the original height, while the other side is bent to press down on the hexagonal mesh, thus playing a dual role in anchoring and fixing the hexagonal mesh.
[0024] The first full-coverage hexagonal mesh 3 and the first V-shaped anchor nail 4, the second full-coverage hexagonal mesh and the second V-shaped anchor nail together constitute the hexagonal mesh anchoring layer 6. The hexagonal mesh anchoring layer 6 is coated with a wear-resistant material protective layer 5. A wear-resistant manganese steel plate protective layer 7 is set on the wear-resistant material protective layer 5. The wear-resistant manganese steel plate protective layer 7 is fixed to the inner wall of the air box 1 and the partition plate 2 by bolts and nuts 8.
[0025] Specifically, the wear-resistant manganese steel plate protective layer 7 on the inner wall of the bellows 1 includes manganese steel plates arranged in sequence, with a 20mm interval between adjacent manganese steel plates, until the inner wall of the bellows 1 is fully covered; bolt holes are provided at the four corners of the manganese steel plates, and the bolts of the bolt nuts 8 are welded to the inner wall of the bellows 1 through the bolt holes.
[0026] In this embodiment, the bolt has a length L of 100mm and a diameter φ14mm. The bolt is used to fix a manganese steel plate with dimensions of 200mm*300mm*10mm and 15mm diameter holes at the four corners.
[0027] After ensuring the bolts are firmly welded, apply a wear-resistant protective layer 5. This layer is made of Al2O3 wear-resistant material or ceramic wear-resistant material with added steel fiber castings, and its thickness is 50mm–70mm. After the high-strength wear-resistant material with added steel fiber coating is applied, insert a pre-drilled manganese steel plate through the bolt holes, press it close to the material surface, and tighten the nuts. Figure 5 The dashed box indicates the location of the tail bellows and the planetary gear 9 at the end of the burner.
[0028] As can be seen from the above embodiments, the repair and protection device for the sintering machine tail air box of this utility model can effectively and reliably protect the refractory material of the sintering machine tail air box, solve the problem of easy erosion and damage to the sintering machine tail air box and longitudinal and transverse partitions, reduce the amount of repair work, extend the service life, reduce air leakage in the sintering system, and help save energy and reduce consumption. This utility model adopts a composite fixing method of hexagonal mesh and V-shaped anchor nails, and applies a high-strength wear-resistant material with added steel fibers, with a thickness of 50mm-70mm, to form a solid wear-resistant protective layer, extending the service life of the inner wall of the air box. Since the number of tail air boxes is small, the application method with added steel fibers is used, and the material has better wear resistance than that without added steel fibers. The above technology is equivalent to using a double protection structure of manganese steel plate and wear-resistant material, which is equivalent to two wear-resistant layers to deal with the problem of severe wear of the tail air box. Compared with the previous repeated repairs, it reduces maintenance costs, greatly extends the service life, and reduces sintering downtime.
[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in sequences other than those illustrated or described herein.
[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A repair and protection device for the tail air box of a sintering machine, characterized in that, include: Multiple bellows (1), each bellows (1) has a first full-coverage tortoise shell mesh (3) on its four inclined inner walls, the first full-coverage tortoise shell mesh (3) having the same shape as the inner wall surface; first V-shaped anchor nails (4) are interspersed and welded in the first full-coverage tortoise shell mesh (3), the number of first V-shaped anchor nails (4) per square meter in the first full-coverage tortoise shell mesh (3) is greater than or equal to fifteen, and the bottom of the first V-shaped anchor nails (4) is welded to the inner wall surface of the bellows (1), The top of one side of the first V-shaped anchor (4) is bent and pressed against the first full-coverage turtle shell mesh (3); a longitudinal and transverse partition (2) is provided between adjacent air boxes (1), and a second full-coverage turtle shell mesh is provided on the partition (2). The second full-coverage turtle shell mesh has the same shape as the partition (2). A second V-shaped anchor is interspersed and welded in the second full-coverage turtle shell mesh. The bottom of the second V-shaped anchor is welded to the partition (2). The top of one side of the second V-shaped anchor is bent and pressed against the second full-coverage turtle shell mesh. The first full-coverage turtle shell mesh (3) and the first V-shaped anchor nail (4), the second full-coverage turtle shell mesh and the second V-shaped anchor nail together constitute the turtle shell mesh anchoring layer (6). The turtle shell mesh anchoring layer (6) is coated with a wear-resistant material protective layer (5). The wear-resistant material protective layer (5) is provided with a wear-resistant manganese steel plate protective layer (7). The wear-resistant manganese steel plate protective layer (7) is fixed to the inner wall of the wind box (1) and the partition plate (2) by bolts and nuts (8).
2. The repair and protection device for the tail air box of a sintering machine as described in claim 1, characterized in that, The second V-shaped anchor nails are evenly arranged in a single row or multiple rows on the partition plate (2).
3. The repair and protection device for the tail air box of a sintering machine as described in claim 1, characterized in that, The first V-shaped anchor (4) and the second V-shaped anchor are made of V-shaped stainless steel.
4. The repair and protection device for the tail air box of a sintering machine as described in claim 1, characterized in that, The wear-resistant manganese steel plate protective layer (7) on the inner wall of the wind box (1) includes manganese steel plates arranged in sequence, with a 20mm interval between adjacent manganese steel plates, until the inner wall of the wind box (1) is fully covered; bolt holes are provided at the four corners of the manganese steel plates, and the bolts of the bolt nuts (8) are welded to the inner wall of the wind box (1) through the bolt holes.
5. The repair and protection device for the tail air box of a sintering machine as described in claim 1, characterized in that, The wear-resistant material protective layer (5) is an Al2O3 wear-resistant material or a ceramic wear-resistant material plus steel fiber castable, and the thickness of the wear-resistant material protective layer (5) is 50mm to 70mm.