Self-cleaning grate bar for sintering machine

Abstract

The utility model relates to sintering machine barb technical field discloses a self -cleaning formula sintering machine barb, including barb main part, barb main part adopts high temperature resistant cast steel material to make, the inside of barb main part is provided with a plurality of long strip shape setting air hole, the outside of barb main part is provided with a plurality of cleaning convex edges, the surface of cleaning convex edges has sprayed wear -resistant coating. Further, the top of barb main part is fixedly installed with two limit posts, the limit post is used for with the limit recess of sintering machine inside and engages, and the limit post and the limit recess between leave the gap. The self -cleaning formula sintering machine barb, strong anti -damage durability: barb main part adopts high temperature resistant cast steel material, and cleaning convex edges spray wear -resistant coating, can adapt to sintering machine high temperature operation environment, and resist material long -term friction loss, significantly prolong the overall service life of barb.

Description

Technical Field

[0001] This utility model relates to the field of sintering machine grate technology, specifically a self-cleaning sintering machine grate. Background Technology

[0002] In sintering operations in the metallurgical industry, the grate bars of the sintering machine are core components that support the furnace charge and ensure ventilation during sintering. They must withstand long-term high-temperature thermal cycling and friction and erosion from the furnace charge, operating in an extremely harsh environment. In existing technologies, grate bars often suffer from insufficient high-temperature resistance and oxidation resistance due to unreasonable material design, making them prone to deformation and failure after prolonged use. Meanwhile, the traditional grate bar has a poor ventilation structure design, and materials are prone to accumulate and block on the surface and in the pores, affecting ventilation efficiency and sintering effect. In addition, some grate bars lack stable positioning structure and buffer adaptation design, resulting in poor operational stability after installation. Furthermore, cleaning up accumulated materials requires manual operation after machine shutdown, which not only increases maintenance costs but also leads to a decrease in production efficiency, making it difficult to meet the needs of continuous and efficient operation of the sintering machine. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a self-cleaning sintering machine grate to solve the problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A self-cleaning sintering machine grate includes a grate body made of high-temperature resistant cast steel. The grate body has multiple elongated ventilation holes inside and multiple cleaning protrusions on the outside. The surface of the cleaning protrusions is coated with a wear-resistant coating.

[0005] Furthermore, two limiting posts are fixedly installed on the top of the main body of the grate bar. The limiting posts are used to engage with the limiting grooves inside the sintering machine, and a gap is left between the limiting posts and the limiting grooves.

[0006] Furthermore, a groove is provided at each end of the main body of the grate bar, and two springs are fixedly installed inside each groove.

[0007] Furthermore, it also includes a stopper plate, which is slidably connected to the inside of the groove and fixedly connected to the spring.

[0008] Furthermore, the plurality of ventilation holes are evenly distributed along the length of the main body of the grate bar.

[0009] Furthermore, the plurality of cleaning protrusions are spaced apart along the width direction of the main body of the grate bar.

[0010] Furthermore, the axis of the spring is aligned with the depth direction of the groove, and one end of the spring is fixedly connected to the inner wall of the groove.

[0011] Furthermore, the size of the stopper plate is adapted to the opening size of the groove, and the stopper plate is used to engage with the inside of the sintering machine.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The self-cleaning sintering machine grate bar has strong wear resistance and durability: The main body of the grate bar is made of high temperature resistant cast steel material, and the cleaning protrusion is sprayed with a wear-resistant coating, which can adapt to the high temperature working environment of the sintering machine, resist long-term friction and wear of materials, and significantly extend the overall service life of the grate bar.

[0013] 2. The self-cleaning sintering machine's grate bar has a significant anti-material accumulation effect: the long, evenly distributed ventilation holes reduce the space for material retention, and the spaced cleaning protrusions, combined with the spring-driven grate bar vibration, form a double anti-accumulation structure, effectively preventing material from accumulating on the grate bar surface and in the pores.

[0014] 3. The self-cleaning sintering machine grate is stably installed and has good adaptability: it is positioned by engaging with the limiting post and the limiting groove of the sintering machine, and the reserved gap ensures that the vibration function is realized smoothly. The combination structure of spring and stopper plate provides stable support and can flexibly adapt to the stress changes during operation, ensuring that the grate runs stably and reliably. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a frontal sectional view of the structure of this utility model.

[0016] In the diagram: 1. Main body of the grate bar; 2. Ventilation hole; 3. Cleaning protrusion; 4. Limiting post; 5. Groove; 6. Spring; 7. Plug plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: Please refer to the following: Figure 1-3 , A self-cleaning sintering machine grate includes a grate body made of high-temperature resistant cast steel. The grate body has multiple long, strip-shaped ventilation holes 2 inside and multiple cleaning protrusions 3 on the outside. The surface of the cleaning protrusions 3 is coated with a wear-resistant coating. Specifically, the main body of the grate is made of high-temperature resistant cast steel, which can adapt to the high-temperature operating environment of the sintering machine, avoid deformation and damage at high temperatures, and ensure the overall structural stability of the grate. Multiple elongated ventilation holes 2 inside the main body of the grate provide channels for gas flow, while the elongated structure can reduce the space for material to stagnate in the holes. Multiple cleaning protrusions 3 on the outer side of the main body of the grate, through the structural design of protruding from the surface of the main body, can form contact barriers with the material. The wear-resistant coating sprayed on the surface of the cleaning protrusions 3 can enhance its surface hardness and wear resistance, extend its service life, and avoid excessive wear caused by long-term friction with the material. In the embodiment: two limiting posts 4 are fixedly installed on the top of the grate bar body. The limiting posts 4 are used to engage with the limiting grooves 5 inside the sintering machine, and a gap is left between the limiting posts 4 and the limiting grooves 5. Specifically, the two limiting posts 4 at the top of the grate bar body have the core function of positioning and installing the grate bar with the sintering machine. By engaging with the limiting grooves 5 inside the sintering machine, they limit the installation position of the grate bar inside the sintering machine and prevent lateral displacement of the grate bar during operation. The gap reserved between the limiting posts 4 and the limiting grooves 5 provides room for the subsequent vibration action of the grate bar, avoiding the limiting structure being too tight and preventing the grate bar from vibrating, thus ensuring that the installation positioning and the movement function do not conflict with each other. In the embodiment: a groove 5 is provided at each end of the main body of the grate bar, and two springs 6 are fixedly installed inside each groove 5; Specifically, the grooves 5 at both ends of the main body of the grate bar provide dedicated installation space for the springs 6, which can store and limit the springs 6, preventing them from shifting or falling off during operation. Two springs 6 are fixedly installed in each groove 5. The double springs 6 can enhance the elastic force and ensure the stability and sufficiency of the subsequent vibration effect. At the same time, the structural design of the grooves 5 can also prevent the springs 6 from being directly exposed to the outside and subjected to material impact and high temperature corrosion, thus extending the service life of the springs 6. In this embodiment: it also includes a stopper plate 7, which is slidably connected to the inside of the groove 5, and the stopper plate 7 is fixedly connected to the spring 6; Specifically, the stopper plate 7 is slidably connected inside the groove 5 and fixedly connected to the spring 6. When the spring 6 stretches and deforms, it will drive the stopper plate 7 to slide back and forth in the groove 5. The stopper plate 7 is engaged inside the sintering machine to form a fixed support point. The elastic force of the spring 6 is transmitted to the sintering machine through the stopper plate 7. At the same time, the fixing force of the sintering machine acts on the spring 6. The stretching and contraction of the spring 6 drives the grate bar body to vibrate, thereby achieving the effect of cleaning materials. The sliding connection method ensures that the stopper plate 7 moves smoothly without jamming when it moves with the spring 6. In the embodiment: multiple air vents 2 are evenly distributed along the length of the main body of the grate bar; Specifically, multiple vent holes 2 are evenly distributed along the length of the grate bar body, which allows gas to flow evenly on the grate bar body, avoiding material accumulation caused by poor local gas flow. At the same time, the evenly distributed vent holes 2 can make the grate bar body more evenly stressed, reducing local wear and deformation caused by uneven structural distribution, ensuring the overall service life and working stability of the grate bar, and ensuring that each area can achieve the anti-material accumulation function through the vent holes 2. In the embodiment: multiple cleaning protrusions 3 are spaced apart along the width direction of the main body of the grate; Specifically, multiple cleaning protrusions 3 are spaced apart along the width of the grate bar, forming a uniform blocking structure in the width direction of the grate bar. When the material moves on the surface of the grate bar, the spaced cleaning protrusions 3 can gradually block and scrape the material, preventing the material from accumulating locally in the width direction. The spaced arrangement also reduces the overall contact area between the protrusions and the material, reducing frictional resistance, while ensuring that the cleaning effect covers the entire width range of the grate bar body without any cleaning blind spots. In the embodiment: the axis of the spring 6 is aligned with the depth direction of the groove 5, and one end of the spring 6 is fixedly connected to the inner wall of the groove 5; Specifically, the axis of spring 6 is aligned with the depth direction of groove 5, ensuring that the extension and retraction of spring 6 proceeds along the depth direction of groove 5, preventing lateral offset during extension and retraction, and ensuring that the elastic force is accurately transmitted to the stopper plate 7 and the grate body; one end of spring 6 is fixedly connected to the inner wall of groove 5, providing a stable fixed support point for spring 6, so that one end of spring 6 remains unchanged during extension and retraction, while the other end drives the stopper plate 7 to move, thereby forming an effective elastic force, ensuring the stable realization of the vibration function, and preventing the vibration effect from weakening or failing due to improper fixing of spring 6; In the embodiment: the size of the stopper plate 7 is adapted to the opening size of the groove 5, and the stopper plate 7 is used to engage with the inside of the sintering machine; Specifically, the size of the stopper plate 7 is matched with the opening size of the groove 5 to ensure that the stopper plate 7 can fit tightly against the opening of the groove 5, preventing materials and dust from entering the groove 5 and contaminating the spring 6 and affecting the sliding effect. At the same time, the tight fit size allows the stopper plate 7 to be evenly stressed during sliding, reducing the shaking caused by gaps. The stopper plate 7 is locked inside the sintering machine to form a stable connection point, providing reliable force support for the spring 6, so that the elastic force of the spring 6 can be effectively converted into the vibration force of the grate body. The locking method also prevents the stopper plate 7 from falling off during operation, ensuring the stability of the overall structure. Working Principle: The main body of the grate bar is made of high-temperature resistant cast steel. The cleaning protrusions 3 on its outer side are coated with a wear-resistant coating, which can adapt to the high-temperature operating environment of the sintering machine and resist material friction wear. Multiple long strip-shaped ventilation holes 2 are evenly distributed along the length of the grate bar body, providing channels for gas flow while reducing material retention. The grate bar is engaged in the limiting grooves 5 inside the sintering machine by two limiting posts 4 at the top, and a gap is reserved between the limiting posts 4 and the grooves 5, which not only achieves positioning installation but also provides space for vibration. Two springs 6 are fixedly installed in the grooves 5 at both ends of the grate bar body. The axis of the springs 6 is consistent with the depth direction of the grooves 5. The plug plates 7 slidably connected in the grooves 5 are fixedly connected to the springs 6 and engaged in the inner side of the sintering machine, forming a stable force support point. During operation, the springs 6 expand and contract, causing the plug plates 7 to slide back and forth in the grooves 5, thereby driving the grate bar body to vibrate. Together with the cleaning protrusions 3 spaced along the width direction, they reduce the accumulation of material on the surface of the grate bar and achieve a self-cleaning effect.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning sintering machine grate bar, characterized in that, The grate body (1) is made of high-temperature resistant cast steel. The grate body (1) has multiple long and narrow ventilation holes (2) inside. The grate body (1) has multiple cleaning protrusions (3) on the outside. The surface of the cleaning protrusions (3) is coated with a wear-resistant coating.

2. The self-cleaning sintering machine grate bar according to claim 1, characterized in that, Two limiting posts (4) are fixedly installed on the top of the main body (1) of the grate bar. The limiting posts (4) are used to engage with the limiting groove inside the sintering machine, and a gap is left between the limiting posts (4) and the limiting groove.

3. The self-cleaning sintering machine grate bar according to claim 1, characterized in that, The main body of the grate bar (1) has a groove (5) at each end, and two springs (6) are fixedly installed inside each groove (5).

4. The self-cleaning sintering machine grate bar according to claim 3, characterized in that, It also includes a stopper plate (7), which is slidably connected to the inside of the groove (5), and the stopper plate (7) is fixedly connected to the spring (6).

5. A self-cleaning sintering machine grate bar according to claim 1, characterized in that, The plurality of ventilation holes (2) are evenly distributed along the length of the main body of the grate bar (1).

6. The self-cleaning sintering machine grate bar according to claim 1, characterized in that, Multiple cleaning protrusions (3) are spaced apart along the width direction of the grate body (1).

7. A self-cleaning sintering machine grate bar according to claim 3, characterized in that, The axis of the spring (6) is aligned with the depth direction of the groove (5), and one end of the spring (6) is fixedly connected to the inner wall of the groove (5).

8. A self-cleaning sintering machine grate bar according to claim 4, characterized in that, The size of the stopper plate (7) is adapted to the opening size of the groove (5), and the stopper plate (7) is used to engage with the inside of the sintering machine.

Images