Novel cloth distributor trailing ring

Abstract

The utility model belongs to the technical field of high -furnace cloth distributor drag circle, especially a new cloth distributor drag circle, including outer drag circle and inner drag circle, the inner side of outer drag circle is welded with inner drag circle, the inner wall of inner drag circle is fixed with the circle seat, a plurality of reinforcing ribs are fixed on the circle seat, the inner side of circle seat is detachably installed with wear -resistant inner lining, both sides of wear -resistant inner lining outer wall all are fixed with the plug -in strip, the circle seat is set up and is inserted with the plug -in slot of plug -in strip, through the thickening circle seat and setting up a plurality of reinforcing ribs on it, greatly enhanced the rigidity and strength of drag circle main part. Can effectively resist the deformation under heavy load, ensure that the long -term stable operation of slewing bearing, fundamentally eliminates the jamming failure caused by drag circle deformation, guarantees the smooth operation of blast furnace, adopts the detachable wear -resistant inner lining design, separates the easy wear function with the main body bearing function, when the friction surface wears, only need to replace wear -resistant inner lining.

Description

Technical Field

[0001] This utility model belongs to the technical field of blast furnace charge feeder drag rings, specifically relating to a novel charge feeder drag ring. Background Technology

[0002] The blast furnace charge feeder is a core piece of equipment in the blast furnace ironmaking system. Its function is to evenly distribute the furnace charge into the blast furnace throat according to process requirements. The drag ring, as a key load-bearing and rotating component of the charge feeder, directly affects the charging accuracy and the stability of blast furnace operation.

[0003] The existing feeder ring seat is relatively thin and often has too many openings to facilitate bolt disassembly and assembly, which weakens its overall rigidity. Under the long-term continuous heavy load and high temperature conditions of the blast furnace, the ring seat is prone to plastic deformation, which leads to inaccuracy of the slewing bearing mounting surface and causes serious failures such as slewing bearing jamming and abnormal noise. In addition, the contact surface between the drag ring and the slide block or airtight box slide is a wear-prone surface. This contact surface is usually directly machined on the drag ring body. Once the wear exceeds the tolerance, it is extremely difficult to repair. It often requires the entire drag ring to be disassembled for large-area welding and re-machining, or the entire drag ring to be replaced directly. The maintenance cycle is long and the cost is high. Therefore, we propose a new type of feeder drag ring. Utility Model Content

[0004] To address the issues raised in the background section regarding the relatively thin ring seat of existing material distributors, which often features excessive openings for easy bolt installation and removal, weakening its overall rigidity, the ring seat is prone to plastic deformation under long-term, continuous heavy load and high-temperature conditions in blast furnaces. This leads to inaccuracies in the slewing bearing mounting surface, causing serious malfunctions such as slewing bearing jamming and abnormal noise. Furthermore, the contact surface between the drag ring and the slide block or airtight box slide is a wear-prone surface, typically machined directly onto the drag ring body. Once wear exceeds tolerance, repair is extremely difficult, often requiring the entire drag ring to be disassembled for extensive welding and re-machining, or the entire drag ring to be replaced, resulting in long maintenance cycles and high costs. This invention provides a novel material distributor drag ring.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel fabric feeder drag ring, comprising an outer drag ring and an inner drag ring, wherein the inner drag ring is welded to the inner side of the outer drag ring, and a ring seat is fixed to the inner wall of the inner drag ring, and a plurality of reinforcing ribs are fixed on the ring seat;

[0006] A wear-resistant inner liner is detachably installed on the inner side of the ring base. Insertion strips are fixed on both sides of the outer wall of the wear-resistant inner liner. Insertion slots are provided on the ring base for inserting the insertion strips.

[0007] As a preferred embodiment of the new fabric feeder drag ring of this utility model, both the outer drag ring and the inner drag ring are semi-circular structures.

[0008] As a preferred embodiment of the new fabric feeder drag ring of this utility model, both the outer drag ring and the inner drag ring have fixed connecting blocks on their outer sides, and connecting bolts are inserted inside the connecting blocks.

[0009] As a preferred embodiment of the new fabric feeder drag ring of this utility model, the outer wall of the ring seat is provided with a locking block, a positioning bolt is inserted through the locking block, and the outer wall of the wear-resistant inner liner ring is provided with a locking groove corresponding to the position of the positioning bolt, and the end of the positioning bolt extends into the locking groove.

[0010] As a preferred embodiment of the new type of fabric feeder drag ring of this utility model, the reinforcing ribs are multiple and evenly distributed along the circumference of the ring seat.

[0011] As a preferred embodiment of the new type of fabric feeder drag ring of this utility model, both the outer drag ring and the inner drag ring are provided with drag ring openings.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: By thickening the ring seat and setting multiple reinforcing ribs on it, the rigidity and strength of the drag ring body are greatly enhanced. This effectively resists deformation under heavy loads, ensuring the long-term stable operation of the slewing bearing, fundamentally eliminating jamming faults caused by drag ring deformation, and guaranteeing the smooth operation of the blast furnace. The use of a detachable wear-resistant inner liner design separates the easily worn function from the main load-bearing function. When the friction surface wears, only the wear-resistant inner liner needs to be replaced, which is simple, time-saving, and low-cost. Furthermore, the drag ring and ring seat, as the main body, are permanently protected, extending their service life several times over, preventing the problems of insufficient rigidity, easy deformation, poor wear resistance, and high maintenance costs associated with existing distributor drag ring structures. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the external structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the wear-resistant inner liner ring in this utility model;

[0017] Figure 4 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0018] In the diagram: 1. Outer drag ring; 2. Inner drag ring; 3. Drag ring opening; 4. Ring seat; 5. Reinforcing rib; 6. Connecting block; 7. Connecting bolt; 8. Wear-resistant inner liner ring; 9. Slot; 10. Slot; 11. Positioning bolt; 12. Insert strip; 13. Insert groove. Detailed Implementation

[0019] 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.

[0020] Example 1

[0021] like Figures 1-4 As shown;

[0022] A novel fabric feeder drag ring includes an outer drag ring 1 and an inner drag ring 2. The inner drag ring 2 is welded to the inner side of the outer drag ring 1. A ring seat 4 is fixed to the inner wall of the inner drag ring 2. Several reinforcing ribs 5 are fixed on the ring seat 4. A wear-resistant inner liner 8 is detachably installed on the inner side of the ring seat 4. Insertion strips 12 are fixed on both sides of the outer wall of the wear-resistant inner liner 8. Insertion grooves 13 for inserting the insertion strips 12 are provided on the ring seat 4.

[0023] In this implementation plan, by thickening the ring seat 4 and adding multiple reinforcing ribs 5, the rigidity and strength of the slewing ring body are greatly enhanced. This effectively resists deformation under heavy loads, ensuring the long-term stable operation of the slewing bearing and fundamentally eliminating jamming faults caused by slewing ring deformation, thus guaranteeing the smooth operation of the blast furnace. A detachable wear-resistant inner liner 8 is adopted, separating the easily worn function from the main load-bearing function. When the friction surface wears down, only the wear-resistant inner liner 8 needs to be replaced, which is simple, time-saving, and low-cost. The slewing ring and ring seat 4, as the main body, are permanently protected, extending their service life several times over.

[0024] In an optional embodiment, both the outer drag ring 1 and the inner drag ring 2 are semi-circular structures.

[0025] In this implementation plan, by designing the overall annular drag ring into two semi-circular structures, the size of individual components and the transportation space requirements are greatly reduced, enabling them to be conveniently transported to the blast furnace site using conventional transportation tools and installed efficiently and safely using common hoisting equipment on site. This is particularly suitable for the construction and maintenance of large blast furnaces.

[0026] In an optional embodiment, connecting blocks 6 are fixed to the outer sides of the ends of both the outer drag ring 1 and the inner drag ring 2, and connecting bolts 7 are inserted inside the connecting blocks 6.

[0027] In this implementation scheme: the connecting block 6 fixed on the outer side of the end provides a solid force application point and connection interface for the connecting bolt 7. By tightening the connecting bolt 7, the two semi-circular outer drag rings 1 and inner drag rings 2 can be tightly combined into a complete ring with sufficient rigidity and strength, ensuring the integrity and stability of the drag ring when subjected to huge working loads.

[0028] In an optional embodiment, a locking block 10 is provided on the outer wall of the ring seat 4, and a positioning bolt 11 is provided in the locking block 10. A groove 9 is provided on the outer wall of the wear-resistant inner liner ring 8 corresponding to the position of the positioning bolt 11, and the end of the positioning bolt 11 extends into the groove 9.

[0029] In this implementation scheme: the locking block 10 and the positioning bolt 11 constitute an adjustable clamping device. When the end of the positioning bolt 11 is screwed into and presses against the groove 9 on the outer wall of the wear-resistant inner liner 8, it can effectively prevent the wear-resistant inner liner 8 from moving circumferentially or axially during equipment operation, ensuring the stability of its working position, and making the disassembly and replacement of the wear-resistant inner liner 8 very simple and quick.

[0030] In an optional embodiment, there are multiple reinforcing ribs 5, which are evenly distributed along the circumference of the ring seat 4.

[0031] In this implementation scheme, multiple reinforcing ribs 5 evenly distributed around the circumference of the ring seat 4 can evenly transfer and disperse the concentrated load acting on the ring seat 4 to a larger area of ​​the drag ring, effectively suppressing the elastic deformation and plastic deformation of the ring seat 4 under high load, thereby ensuring the installation accuracy of the upper slewing bearing and fundamentally eliminating the hidden danger of jamming failure caused by drag ring deformation.

[0032] In an optional embodiment, both the outer drag ring 1 and the inner drag ring 2 are provided with drag ring openings 3.

[0033] In this implementation plan: the opening 3 of the drag ring provides workers with an operating window, making it convenient for them to use tools such as extension rods to disassemble and inspect the inside of the drag ring or the connecting bolts 7 of other components such as the steel ring, thus improving the maintainability of the equipment. At the same time, the opening design may also be used to avoid other structures or pipelines inside the material distributor, thus optimizing the overall spatial layout.

[0034] Working principle:

[0035] First, the two semi-circular components are transported to the blast furnace site using transport vehicles. The outer drag ring 1 and inner drag ring 2 are both semi-circular structures rather than a single unit, facilitating transportation and overcoming the difficulty of transporting a single drag ring within the limited space of the plant. Once in place, operators use hoisting equipment to align the two semi-circular components. The bolt holes on the connecting blocks 6 on the outer sides of the outer drag ring 1 and inner drag ring 2 are aligned. The connecting bolts 7 are then inserted into the connecting blocks 6 and tightened, thus firmly connecting the two semi-circular components into a complete, rigid annular drag ring body. The wear-resistant inner liner ring 8 is inserted into the corresponding insertion slots 13 on the ring seat 4 via the insertion strips 12 on both sides, achieving initial radial positioning. Simultaneously, by tightening the positioning bolts 11 inserted into the locking blocks 10, their ends are pressed against the locking slots 9 on the outer wall of the wear-resistant inner liner ring 8, achieving circumferential and axial fastening.

[0036] The assembled drag ring is mounted on the rotating component of the feeder via its inner ring seat 4. As the main load-bearing and force-transmitting structure, the ring seat 4 transfers the entire weight from the feeder body and the internal furnace charge to the drag ring as a whole. To enhance the rigidity of the ring seat 4 and prevent it from deforming under high load, multiple reinforcing ribs 5 are welded on it, effectively distributing the concentrated load to a larger drag ring area. The thickened design of the ring seat 4 directly improves the foundation strength, and the reinforcing ribs 5 significantly increase the structural rigidity of the ring seat 4, greatly reducing its stress level and deformation, fundamentally solving the problem of the upper slewing bearing jamming due to excessive deformation.

[0037] After the equipment is started, the entire drag ring begins to rotate. The wear-resistant inner liner 8, which is fixed inside the ring seat 4, becomes the surface that directly contacts and rubs against the stationary parts. As a sacrificial part, the wear-resistant inner liner 8 directly bears the wear, protecting the more expensive and more complicated replacement ring seat 4 and drag ring body. When it wears to the safety limit, it can be removed and replaced simply by loosening the positioning bolt 11. Maintenance is simple: loosen and remove the positioning bolt 11, and then remove the worn wear-resistant inner liner 8 from the ring seat 4. Align the insertion strip 12 of the new wear-resistant inner liner 8 with the insertion slot 13 and insert it. Finally, tighten it with the positioning bolt 11.

[0038] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 novel fabric feeder drag ring, comprising an outer drag ring (1) and an inner drag ring (2), characterized in that: The inner side of the outer drag ring (1) is welded with an inner drag ring (2), and the inner wall of the inner drag ring (2) is fixed with a ring seat (4), and a number of reinforcing ribs (5) are fixed on the ring seat (4). The inner side of the ring seat (4) is detachably fitted with a wear-resistant inner liner (8). Both sides of the outer wall of the wear-resistant inner liner (8) are fixed with plug strips (12). The ring seat (4) is provided with a plug groove (13) for the plug strips (12) to be inserted.

2. The novel fabric feeder drag ring according to claim 1, characterized in that: Both the outer drag ring (1) and the inner drag ring (2) are semi-circular structures.

3. The novel fabric feeder drag ring according to claim 1, characterized in that: Both the outer drag ring (1) and the inner drag ring (2) have a fixed connecting block (6) on their outer sides, and a connecting bolt (7) is inserted inside the connecting block (6).

4. The novel fabric feeder drag ring according to claim 1, characterized in that: The outer wall of the ring seat (4) is provided with a locking block (10), and a positioning bolt (11) is provided in the locking block (10). The outer wall of the wear-resistant inner liner (8) is provided with a slot (9) corresponding to the position of the positioning bolt (11), and the end of the positioning bolt (11) extends into the slot (9).

5. The novel fabric feeder drag ring according to claim 1, characterized in that: There are multiple reinforcing ribs (5), which are evenly distributed along the circumference of the ring seat (4).

6. The novel fabric feeder drag ring according to claim 1, characterized in that: Both the outer drag ring (1) and the inner drag ring (2) are provided with drag ring openings (3).

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