Wear-resistant structure for air bellow of sintering machine

Abstract

The utility model discloses a wear-resistant structure for an air bellow of a sintering machine, which belongs to the technical field of sintering machines and comprises a grid plate arranged on the inner wall of the air bellow through a plurality of limiting columns, and the grid plate comprises a plurality of grid units which are densely laid in parallel; each grid unit is of a polygonal structure, through mounting holes and elastic buckles are arranged on every two adjacent edges of each grid unit in a matched mode, and arc-shaped grooves are formed in all vertex angles of each grid unit in a through mode; and assembly holes matched with the limiting columns are formed in the arc-shaped grooves of the adjacent grid units on the grid plate. Abrasion resistance and corrosion resistance of the air bellow of the sintering machine can be improved, installation is convenient and fast, labor force is reduced, installation efficiency is improved, and later maintenance and replacement are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of sintering machines, and in particular relates to a wear-resistant structure for a sintering machine wind box. Background Art

[0002] During the production process of the sintering machine, a large amount of flue gas will be generated after the coal is burned, causing corrosion and friction on the inner wall of the bellows. This is because the flue gas contains a lot of corrosive media. The main components of the flue gas are carbon dioxide, carbon monoxide, sulfur dioxide, and nitrogen oxides CO2, CO, SO2, NO, NO2, etc. These components contain both corrosive media and oxidizing media, among which acid and alkali corrosive media are the main ones. The corrosion mechanism of the high-temperature flue gas section is similar to that of high-temperature oxidation corrosion. The metal substrate will be gradually oxidized and peeled off. In addition, the special corrosive ions in the flue gas will further accelerate the corrosion rate. In the low-temperature flue gas section, dew point corrosion is also a serious problem. Although the content of corrosive media in the flue gas is low, under low temperature conditions, acidic gases will condense into acid, which will corrode the metal very quickly, so that the metal substrate will be perforated within a few days.

[0003] In order to solve the above problems, operators usually weld tortoise shell mesh directly on the inner wall of the bellows to avoid direct contact between the airflow and the bellows, and improve the wear resistance and corrosion resistance of the bellows. However, direct welding of tortoise shell mesh is labor-intensive, requiring multiple operators to hold the electric welding while manually positioning the tortoise shell mesh on the inner wall of the bellows and then weld the multiple welding points on the tortoise shell mesh one by one. In addition, the existing tortoise shell mesh is usually assembled from multiple flat steel bars with grooves stamped on them, which has low strength and requires the use of tools during assembly, which is time-consuming and labor-intensive. Due to the limitations of the flat steel bar structure shape, this type of tortoise shell mesh cannot meet the shape requirements required for various working conditions, and is also not conducive to the partial maintenance and replacement of the tortoise shell mesh.

[0004] Therefore, a wear-resistant structure for a sintering machine wind box is needed which has high strength, is convenient to install, and is easy to repair and replace. Utility Model Content

[0005] The utility model aims to provide a wear-resistant structure for a sintering machine bellows, which can improve the wear resistance and corrosion resistance of the sintering machine bellows while achieving convenient installation, reducing labor and improving installation efficiency, and facilitating later maintenance and replacement.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A wear-resistant structure for a sintering machine bellows comprises a mesh plate arranged on the inner wall of the bellows via a plurality of limit columns, the mesh plate comprising a plurality of closely laid mesh units connected in parallel; the mesh unit is a polygonal structure, each of two adjacent sides of which are respectively provided with through mounting holes and elastic buckles, and each of the top corners thereof is provided with an arc-shaped groove; the arc-shaped grooves of adjacent mesh units on the mesh plate form assembly holes adapted for the limit columns.

[0008] A further improvement of the technical solution of the utility model is that the limiting column includes a column with one end arranged on the inner wall of the bellows and adapted to the assembly hole, elastic blocks symmetrically arranged on both sides of the column, and two paddles rotatably arranged on the end surface of the other end of the column and adapted to the elastic blocks.

[0009] A further improvement of the technical solution of the utility model is that a countersunk hole adapted to the elastic block is opened on the side wall of the column at one end away from the inner wall of the bellows, and the elastic block is connected to the bottom of the countersunk hole through a spring and is restricted in the countersunk hole by a paddle.

[0010] A further improvement of the technical solution of the utility model is that the paddle is an "L"-shaped structure adapted to the column, and is arranged on the end surface of the column through a rotating shaft.

[0011] A further improvement of the technical solution of the utility model is that: the grid unit is a quadrilateral structure or a hexagonal structure; the elastic buckle includes spring pieces symmetrically arranged on the outside of the grid unit edge and buckles respectively arranged on the two spring pieces to adapt to the mounting holes.

[0012] A further improvement of the technical solution of the utility model is that a fireproof and wear-resistant coating is laid on the grid plate.

[0013] Due to the adoption of the above technical solution, the technical progress achieved by the utility model is:

[0014] The utility model is used for the wear-resistant structure of the sintering machine bellows, which can improve the wear resistance and corrosion resistance of the sintering machine bellows and at the same time realize convenient installation, reduce labor and improve installation efficiency, and is conducive to later maintenance and replacement.

[0015] The utility model adopts a method of closely paving grid units in parallel and respectively provides through mounting holes and elastic buckles on each adjacent side, so that adjacent grid units are closely connected, and the thickness of the connection between each grid unit is superimposed, which greatly enhances the overall strength of the grid plate. In addition, the mounting holes and elastic buckles cooperate to achieve rapid assembly and installation without consuming a lot of labor.

[0016] The utility model adopts an arc-shaped groove that is opened through each top corner of the grid unit. The arc-shaped grooves of adjacent grid units on the grid plate can form assembly holes and are adapted to a plurality of limit columns on the inner wall of the bellows, so that the grid plate can be quickly installed on the inner wall of the bellows, saving time and effort, greatly reducing the labor intensity of operators, and effectively shortening the installation period.

[0017] The limiting column adopted by the utility model has elastic blocks symmetrically arranged on both sides of the column body, and a rotatable paddle that is adapted to the elastic blocks is arranged on the end face of the column body. Before the grid plate is installed, the elastic blocks are limited in the countersunk holes opened in the side walls of the column body under the action of the paddles. When the grid plate is installed on the limiting column, the paddles are rotated to release the elastic blocks so that they are engaged with the assembly holes at the common vertices of adjacent grid units, thereby achieving the purpose of fixing the grid plate. This process does not require a lot of labor, making the disassembly and assembly of the grid plate more convenient and quick, and more useful for later maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the wear-resistant structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a grid unit in the wear-resistant structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the assembly of the grid plate and the limit column in the wear-resistant structure of the utility model;

[0021] Among them, 1. limit column, 1-1. column, 1-2. elastic block, 1-3. paddle, 1-4. rotating shaft, 2. inner wall of bellows, 3. grid unit, 4. mounting hole, 5. elastic buckle, 6. arc groove. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the embodiments:

[0023] like Figure 1-Figure 3 As shown, the utility model provides a wear-resistant structure for a sintering machine bellows, including a plurality of limit columns 1 and a mesh plate, the mesh plate is arranged on the inner wall 2 of the bellows through the plurality of limit columns 1, the mesh plate includes a plurality of closely laid mesh units 3 in parallel, each mesh unit 3 is closely connected, so that the thickness of the connection is superimposed, that is, the single-side thickness of two mesh units 3 is superimposed, which greatly enhances the overall strength of the mesh plate, improves the wear resistance, and prolongs the service life. In addition, a fireproof and wear-resistant coating is laid on the mesh plate, which can effectively protect the mesh unit 3 and improve its wear resistance and fire resistance.

[0024] Specifically, the grid unit 3 is a polygonal structure. Preferably, the grid unit 3 is a quadrilateral structure or a hexagonal structure, and each adjacent side is respectively provided with a through mounting hole 4 and an elastic buckle 5. The mounting hole 4 and the elastic buckle 5 cooperate to quickly assemble and combine the grid units 3, saving a lot of labor. The elastic buckle 5 includes two spring pieces symmetrically arranged on the outside of the sides of the grid unit 3 and buckles respectively arranged on the two spring pieces to adapt to the mounting holes 4. The two buckles can be quickly installed on the mounting hole 4 under the action of the two spring pieces. The mounting hole 4 can be set to a circle, and the corresponding buckle is a semicircular structure. The mounting hole 4 can also be set to a square, and the corresponding buckle is a rectangular structure. In addition, arc-shaped grooves 6 are provided through each vertex of the grid unit 3, and the arc-shaped grooves 6 are arranged along the thickness direction of the grid unit 3. Since adjacent grid units 3 on the grid plate share a common vertex, the arc-shaped grooves 6 of adjacent grid units 3 can be combined to form an assembly hole, and the assembly hole is compatible with the limit column 1, which enables the grid plate to be quickly installed on the inner wall 2 of the bellows, saving time and effort, greatly reducing the labor intensity of the operator, and effectively shortening the installation period.

[0025] The limiting column 1 includes a column 1-1 adapted to the assembly hole, two elastic blocks 1-2, two paddles 1-3 and a rotating shaft 1-4, wherein one end of the column 1-1 is arranged on the inner wall 2 of the bellows, the two elastic blocks 1-2 are symmetrically arranged on both sides of the column 1-1, and the two paddles 1-3 are rotatably arranged on the end surface of the other end of the column 1-1 and adapted to the elastic blocks 1-2. Specifically, the column 1-1 has two countersunk holes adapted to the elastic blocks 1-2 symmetrically opened on the side wall of the end away from the inner wall 2 of the bellows, the elastic blocks 1-2 are connected to the bottom of the countersunk holes by a spring, and the paddles 1-3 are "L"-shaped structures adapted to the column 1-1, which are arranged on the end surface of the column 1-1 by the rotating shaft 1-4, and the paddles 1-3 can limit the elastic blocks 1-2 in the countersunk holes, so that the limiting column 1 can pass through the assembly hole of the grid plate. Before the mesh plate is installed, the elastic block 1-2 is limited in the countersunk hole opened in the side wall of the column 1-1 by the action of the paddle 1-3. When the mesh plate is installed on the limiting column 1 through the assembly hole, the paddle 1-3 is rotated to release the elastic block 1-2 so that it is engaged with the assembly hole at the common vertex of adjacent mesh units 3, thereby achieving the purpose of fixing the mesh plate on the inner wall 2 of the bellows. This process does not require a lot of labor, making the disassembly and assembly of the mesh plate more convenient and quick, and more useful for later maintenance and replacement.

[0026] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A wear-resistant structure for a sintering machine wind box, characterized in that: The invention comprises a grid plate arranged on the inner wall (2) of a bellows via a plurality of limit posts (1), the grid plate comprising a plurality of grid units (3) closely laid in parallel; the grid unit (3) is a polygonal structure, each of two adjacent sides of which are respectively provided with through mounting holes (4) and elastic buckles (5), and each of the top corners thereof is provided with a through arc groove (6); the arc grooves (6) of adjacent grid units (3) on the grid plate form assembly holes adapted to the limit posts (1).

2. The wear-resistant structure for a sintering machine wind box according to claim 1, characterized in that: The limiting column (1) comprises a column (1-1) with one end arranged on the inner wall (2) of the bellows and adapted to the assembly hole, elastic blocks (1-2) symmetrically arranged on both sides of the column (1-1), and two paddles (1-3) rotatably arranged on the end surface of the other end of the column (1-1) and adapted to the elastic blocks (1-2).

3. The wear-resistant structure for a sintering machine wind box according to claim 2, characterized in that: The column (1-1) is provided with a countersunk hole adapted to fit the elastic block (1-2) on the side wall of the column (1-1) at one end away from the inner wall (2) of the bellows; the elastic block (1-2) is connected to the bottom of the countersunk hole via a spring and is restricted in the countersunk hole by a paddle (1-3).

4. The wear-resistant structure for a sintering machine wind box according to claim 3, characterized in that: The paddle (1-3) is an "L"-shaped structure adapted to the column (1-1), and is arranged on the end surface of the column (1-1) via a rotating shaft (1-4).

5. A wear-resistant structure for a sintering machine wind box according to any one of claims 1 to 4, characterized in that: The grid unit (3) is a quadrilateral structure or a hexagonal structure; the elastic buckle (5) comprises spring sheets symmetrically arranged on the outside of the grid unit (3) and buckles respectively arranged on two spring sheets to fit the mounting holes (4).

6. The wear-resistant structure for a sintering machine wind box according to claim 5, characterized in that: The grid plate is provided with a fireproof and wear-resistant coating.

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