CN-224227103-U - Gradient composite wear-resistant lining plate structure of blast furnace distribution chute

Abstract

The application relates to the technical field of distribution chute, in particular to a gradient composite wear-resistant lining plate structure of a blast furnace distribution chute, and a first connecting structure adopts a matching mode of threaded holes and first bolts, so that the composite lining plate and the wear-resistant lining plate can be quickly disassembled and assembled through standardized bolts. The anti-shearing capability of the connecting interface is enhanced by the thread design of the inner wall of the mounting hole, and the problem that the traditional welding or fastening structure is easy to loose and fall off can be avoided under the working condition of high-frequency impact. Meanwhile, the connecting mode allows the lining plate to be replaced on the premise of not damaging the chute body, so that the shutdown time is greatly reduced, and the connecting mode is particularly suitable for online maintenance operation in the continuous production scene of the blast furnace.

Inventors

• JIN LITAO
• YUAN XINSHENG
• YUAN QIUSHENG

Assignees

• 武汉楚光布料溜槽制造有限公司

Dates

Publication Date

20260512

Application Date

20250611

Claims (6)

1. 1. The gradient composite wear-resistant lining plate structure of the blast furnace distribution chute is arranged in a distribution chute body (1) and is characterized in that the distribution chute body (1) is sequentially provided with a composite lining plate (11) and a wear-resistant lining plate (12) from a material discharging end to a material discharging end, a first connecting structure (2) is arranged between the composite lining plate (11) and the distribution chute body (1), an impact-resistant lining plate (13) is arranged on the surface of the composite lining plate (11), a second connecting structure (3) is arranged between the impact-resistant lining plate (13) and the distribution chute body (1), and the second connecting structure (3) can enable the impact-resistant lining plate (13) to be arranged at any position on the surface of the composite lining plate (11).
2. 2. The gradient composite wear-resistant lining plate structure of a blast furnace distribution chute according to claim 1, wherein the first connecting structure (2) comprises a plurality of mounting holes (21) formed in a bottom plate of the distribution chute body (1) and first bolts (22) penetrating through the composite lining plate (11) and the wear-resistant lining plate (12), threads are formed in the inner walls of the mounting holes (21), and the first bolts (22) are matched with the corresponding threads.
3. 3. The gradient composite wear-resistant lining plate structure of the blast furnace distribution chute according to claim 2, wherein the second connecting structure (3) comprises a connecting lug plate (31) and second bolts (32), the plate surface of the connecting lug plate (31) corresponds to the impact-resistant lining plate (13) and the inner side wall of the distribution chute body (1), and each second bolt (32) penetrates through the connecting lug plate (31) and is fixedly connected with the bottom plate of the distribution chute body (1) or the inner side wall of the distribution chute body (1).
4. 4. The gradient composite wear-resistant lining plate structure of a blast furnace distribution chute according to claim 1, wherein a plurality of impact-resistant bulges (131) are fixed on the surface of the impact-resistant lining plate (13) at intervals.
5. 5. The gradient composite wear-resistant lining plate structure for a blast furnace distribution chute according to claim 4, wherein each impact-resistant bulge (131) is uniformly connected to the surface of the impact-resistant lining plate (13).
6. 6. The gradient composite wear-resistant lining plate structure of the blast furnace distribution chute according to claim 1, wherein guide plates (132) are integrally arranged on two sides of the impact-resistant lining plate (13) corresponding to the feeding end and the discharging end of the distribution chute body (1), and the end parts of the guide plates (132) are arranged in an inclined plane.

Description

Gradient composite wear-resistant lining plate structure of blast furnace distribution chute Technical Field The application relates to the technical field of distribution chute, in particular to a gradient composite wear-resistant lining plate structure of a blast furnace distribution chute. Background The blast furnace distributing chute is one of core components of a blast furnace smelting system, and has the function of uniformly distributing raw materials such as ore, coke and the like which are filled in the furnace top to the section of a furnace throat according to the process requirements, so that the reasonable distribution of gas flow in the blast furnace and the efficient reduction of furnace burden are ensured. As a key channel for connecting furnace top charging equipment and a hearth, the performance of the chute is directly determined on the stability and service life of the operation of the blast furnace under the extreme working conditions of high temperature, high abrasion and complex thermo-mechanical load for a long time. The traditional blast furnace distribution chute adopts an integral casting or block type lining plate structure, and the material mainly comprises high-chromium cast iron and a build-up welding wear-resistant layer. The lining plate resists material impact and friction through the high-hardness surface, and the base material provides structural support, so that the service life of the chute body is prolonged. Conventional designs typically employ a homogeneous material or a single wear layer structure that is bolted or welded to the chute interior walls to form a continuous protective layer to isolate high temperatures and wear. However, the conventional lining plate has the remarkable defect in practical application that the inclination angle of the distribution chute is adjustable, and the material drop points under different inclination angles are dynamically changed, so that the abrasion distribution of the inner wall of the chute is seriously uneven. For example, when the inclination angle is large, the material intensively impacts the front end area of the chute, and when the inclination angle is small, the middle and rear sections bear continuous friction and abrasion, and the homogeneous structure of a single material cannot adapt to the differential abrasion requirement. There is therefore a need for improvements in distribution chute to meet complex use requirements. Disclosure of utility model The application provides a gradient composite wear-resistant lining plate structure of a blast furnace distribution chute, which aims to solve the problem of local premature failure of the existing homogeneous lining plate under the dynamic wear working condition. The application provides a gradient composite wear-resistant lining plate structure of a blast furnace distribution chute, which adopts the following technical scheme: The utility model provides a compound wear-resisting welt structure of gradient of blast furnace cloth chute, the cloth chute body has set gradually compound welt and wear-resisting welt by being close to the unloading end to keeping away from the unloading end, compound welt wear-resisting welt with all be provided with first connection structure between the cloth chute body, compound welt surface is provided with the welt that shocks resistance, shock resistance welt with be provided with second connection structure between the cloth chute body, second connection structure can make shock resistance welt is installed arbitrary position on compound welt surface. Through adopting above-mentioned technical scheme, compound welt of gradient is with compound welt and wear-resisting welt along chute length direction gradient arrangement through split type design to combine the position adjustability who shocks resistance the welt, can be according to the different protection demands in cloth chute inclination change dynamic adaptation high impact region (front end when like big inclination) and conventional wearing and tearing region. The layered structure of the composite lining plate and the wear-resistant lining plate is fixed in a modularized manner through the first connecting structure, the composite lining plate and the wear-resistant lining plate can be independently replaced when being worn locally, so that the maintenance cost is greatly reduced, and the impact-resistant lining plate allows an operator to adjust the covering position of the impact-resistant lining plate according to real-time wear monitoring data through the free positioning function of the second connecting structure, so that the problem of local premature failure of the traditional homogeneous lining plate caused by change of drop points is effectively solved, and the overall service life is prolonged by about 2-3 times. Optionally, the first connection structure is including seting up in a plurality of mounting holes on the cloth chute body bottom plate and run through