A sintering machine grate
By designing a sintering machine grate with a combination of semi-circular air-blocking and air-guiding sections, the problems of uneven airflow distribution and edge air leakage were solved, resulting in a more efficient sintering process and higher-quality sinter production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHU LONGTENG SPECIAL STEEL CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-12
Smart Images
Figure CN224353570U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sintering machine grate technology, and in particular to a sintering machine grate. Background Technology
[0002] Sintered ore is the main iron-bearing artificial lump ore produced in blast furnaces, and it has the advantages of high grade and good reducibility. In order to obtain high-quality sintered ore, the sintering process requires careful ore blending, mixing and granulation, ignition and sintering, and screening and granulation.
[0003] During the sintering process, the mixture is evenly distributed on the sintering machine trolley. After being ignited at a high temperature of 1100℃ by the igniter, the sintering process proceeds from top to bottom under the induced draft of the main exhaust fan.
[0004] In actual production, the air permeability on both sides of the sintering machine trolley is higher than that in the middle, which easily leads to an edge effect, wasting main ventilation energy and affecting the quality of sintered ore. Therefore, a new type of sintering machine grate was developed. Utility Model Content
[0005] The purpose of this invention is to provide a sintering machine grate bar that solves the problem of edge effect in existing sintering machines.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] This utility model provides a sintering machine grate, comprising:
[0008] The grate body extends along the width direction of the sintering trolley;
[0009] The wind-blocking part is disposed on the upper end face of the grate bar body, and the cross-sectional shape of the wind-blocking part is semi-circular;
[0010] The fixing part is formed at both ends of the air-blocking part and is used to fix the grate bar body to both ends of the sintering trolley;
[0011] The flow guide is formed by extending obliquely downward along the lower end face of the windbreak;
[0012] A limiting part is provided at the lower end of the grate bar body to prevent the grate bar body from falling off after installation.
[0013] Furthermore, the wind-blocking part is integrally formed with the grate bar body.
[0014] Furthermore, the bottom end of the fixing part is placed flat on the heat insulation pad of the sintering trolley, and the grate body is fixed to both ends of the sintering trolley.
[0015] Furthermore, the cross-sectional shape of the guide section is a trapezoid that is wider at the top and narrower at the bottom, and the width of the upper end face of the guide section matches the diameter of the wind-blocking section.
[0016] Furthermore, the angle between the lower end face of the guide section and the windbreak section is 12°.
[0017] Furthermore, the diameter of the wind-blocking part is equal to the width of the fixing part.
[0018] Furthermore, the limiting part is a fixing buckle, and the end of the fixing buckle is provided with a barb or a protrusion.
[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0020] This utility model discloses a sintering machine grate that breaks away from the traditional grate structure. Through the combined design of a semi-circular wind-blocking part and a flow-guiding part, it effectively reduces disordered airflow leakage, makes the airflow distribution more uniform, and improves the air permeability and combustion efficiency of the sintering process.
[0021] Furthermore, the seamless fit of the grate bars improves the excessive permeability at the edge of the trolley. Secondly, the filling of the arc-shaped gap between adjacent grate bars with fine powder further increases the ventilation resistance, which helps to further curb edge air leakage, effectively alleviate the edge effect of the sintering machine, and make reasonable use of the main exhaust volume, which is conducive to improving the output and quality of sintered ore. Attached Figure Description
[0022] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:
[0023] Figure 1 This is a front view of a sintering machine grate provided by this utility model;
[0024] Figure 2 This is a side view of a sintering machine grate provided by this utility model;
[0025] Figure 3 This is a schematic diagram of the operation of adjacent grate bars provided by this utility model;
[0026] The reference numerals in the attached figures are explained as follows:
[0027] 1. Grate bar body; 2. Air-blocking part; 3. Fixing part; 4. Airflow guiding part; 5. Limiting part. Detailed Implementation
[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0029] In the existing technology, the sintering machine grates of the traditional structure are installed in the middle of the sintering trolley, and the grates are spaced apart with a gap of 6-8mm between them, in order to improve the air permeability of sintering.
[0030] However, in actual operation, the traditional sintering machine grate bars have the following technical defects:
[0031] Insufficient airflow control: Due to the fixed gaps between the grate bars, airflow is prone to leaking out disorderly from the gaps, resulting in uneven airflow distribution on the cross-section of the sintering trolley, which affects the uniformity of the sinter and the quality of the finished product.
[0032] Severe air leakage at the edges: Traditional grate bars cannot completely seal the edges of the trolley, causing a large amount of airflow to escape from both sides, which not only reduces sintering efficiency but also increases energy consumption.
[0033] In this embodiment of the utility model, a sintering machine grate is provided, such as... Figures 1 to 3 As shown, it includes a grate body 1, an air-blocking part 2, a fixing part 3, a flow guiding part 4, and a limiting part 5.
[0034] Specifically, the grate bar body 1 extends along the width direction of the sintering trolley and is only installed at both ends of the sintering trolley. During installation, the grate bars are in close contact with each other, that is, the grate bars are arranged without gaps, thereby blocking the path of airflow leakage from the gaps between the grate bars. This ensures that the airflow can only enter the material layer through the guide channel under the grate bars, thereby significantly improving the accuracy of airflow control and playing a role in wind resistance.
[0035] The air-blocking part 2 is disposed on the upper end face of the grate body 1 and is integrally formed with the grate body 1. In this embodiment, the cross-sectional shape of the air-blocking part 2 is semi-circular. This semi-circular structure can not only effectively block the disorderly upward flow of air, but also reduce airflow resistance and avoid vortex loss caused by abrupt structural changes.
[0036] The fixing part 3 is formed at both ends of the air-blocking part 2 and is used to fix the grate body 1 to both ends of the sintering trolley. The width of the fixing part 3 is equal to the diameter of the air-blocking part 2. The bottom end of the fixing part 3 is placed flat on the heat insulation pad of the trolley to initially fix the grate body 1 to both ends of the sintering trolley.
[0037] The guide section 4 extends obliquely downwards along the lower end face of the air-blocking section 2, forming a trapezoidal cross-section that is wider at the top and narrower at the bottom. The width of the upper end face of the guide section 4 matches the diameter of the air-blocking section 2. In this embodiment, the angle between the lower end face of the guide section 4 and the air-blocking section 2 is controlled at 12°. This optimizes the tilt angle of the guide section 4, reducing air resistance while ensuring stable airflow to the sintering material layer.
[0038] A limiting part 5, located at the lower end of the grate body 1, is used to prevent the grate body 1 from falling off the sintering trolley. Specifically, it employs a fixed snap-fit structure with barbs or protrusions at its ends, allowing it to tightly engage with the mating groove at the bottom of the sintering trolley. This design not only prevents the grate from falling off under vibration or airflow impact but also adapts to thermal expansion deformation under high-temperature environments, significantly improving the long-term stability of the grate.
[0039] In summary, the sintering machine grate disclosed in this utility model solves the problem of air leakage at the edge of the sintering trolley by optimizing the grate arrangement (arranging them without gaps only at both ends of the trolley) and designing air-blocking, flow-guiding, and limiting parts, thereby improving the uniformity of airflow distribution and enhancing the structural stability of the device.
[0040] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.
Claims
1. A sintering machine grate bar, characterized in that, include: The grate body (1) extends along the width direction of the sintering trolley; Wind-blocking part (2), the wind-blocking part (2) is disposed on the upper end surface of the grate body (1), and the cross-sectional shape of the wind-blocking part (2) is semi-circular; Fixing part (3), the fixing part (3) is formed at both ends of the wind-blocking part (2) and is used to fix the grate body (1) to both ends of the sintering trolley; The guide section (4) extends obliquely downward along the lower end face of the wind-blocking section (2); A limiting part (5) is provided at the lower end of the grate body (1) to prevent the grate body (1) from falling off after installation.
2. A sintering machine grate bar according to claim 1, characterized in that, The wind-blocking part (2) is integrally formed with the grate body (1).
3. A sintering machine grate bar according to claim 1, characterized in that, The bottom end of the fixing part (3) is placed flat on the heat insulation pad of the sintering trolley, and the grate body (1) is fixed to both ends of the sintering trolley.
4. A sintering machine grate bar according to claim 1, characterized in that, The cross-sectional shape of the guide section (4) is a trapezoid with a wider top and a narrower bottom, and the width of the upper end face of the guide section (4) matches the diameter of the wind-blocking section (2).
5. A sintering machine grate bar according to claim 4, characterized in that, The angle between the flow guide (4) and the lower end face of the wind-blocking part (2) is 12°.
6. A sintering machine grate bar according to claim 1, characterized in that, The diameter of the wind-blocking part (2) is equal to the width of the fixing part (3).
7. A sintering machine grate bar according to claim 1, characterized in that, The limiting part (5) is a fixing buckle, and the end of the fixing buckle is provided with a barb or a protrusion.