Wear-resistant ceramic grizzly device

Abstract

This utility model belongs to the field of blast furnace hopper screen equipment, specifically relating to a wear-resistant ceramic screen device, including a support side block, a support rib plate provided on the support side block, an insertion groove on the support rib plate for inserting a partition rib plate, partition side blocks provided on both sides of the partition rib plate, a U-shaped steel plate detachably connected to the partition rib plate, and a U-shaped ceramic sleeve detachably connected to the outer wall of the U-shaped steel plate. This wear-resistant ceramic screen device only requires disassembling the partition side blocks on both sides of the partition rib plate to separate the partition rib plate from the device. Then, by knocking out the fixing pin two from the disassembly hole of the U-shaped ceramic sleeve, its connection to the partition rib plate can be released. The entire replacement process requires no complex equipment, reducing time compared to traditional welded structures that require cutting and disassembly, greatly improving maintenance efficiency, and lowering the cost of a single ceramic sleeve replacement. It meets the need for rapid maintenance of vulnerable parts and facilitates daily operation and maintenance of the equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of blast furnace hopper screen equipment, specifically a wear-resistant ceramic screen device. Background Technology

[0002] In metallurgical blast furnace production, the hopper screen device is a key component for material screening. It needs to withstand the impact and friction of high-temperature, high-hardness materials for extended periods, requiring extremely high structural strength and wear resistance. Existing screen devices mostly adopt a combination structure of metal frame and welded wear-resistant layer.

[0003] Currently, traditional blast furnace hopper grate screen devices generally adopt welded steel structure frames. The welding process of the support plates and the partition plates is prone to thermal deformation, resulting in uneven grate gaps and affecting screening accuracy. The wear-resistant layer is mostly an integrally cast or welded metal wear-resistant part. The interface between the wear-resistant layer and the substrate is prone to detachment due to stress concentration. Moreover, after damage, it needs to be cut and disassembled as a whole, which is time-consuming and labor-intensive. It is difficult to meet the high-efficiency maintenance requirements of long-term continuous production of blast furnaces. In view of this, we propose a wear-resistant ceramic grate screen device. Utility Model Content

[0004] The main objective of this invention is to provide a wear-resistant ceramic screen device that can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the wear-resistant ceramic screen device proposed in this utility model includes a support side block, a support bone plate provided on the support side block, an insertion groove provided on the support bone plate, a partition bone plate to be inserted into the insertion groove, partition side blocks provided on both sides of the partition bone plate, a U-shaped steel plate detachably connected to the partition bone plate, a U-shaped ceramic sleeve detachably connected to the outer wall of the U-shaped steel plate, and the U-shaped steel plate and the U-shaped ceramic sleeve connected by a fixing pin.

[0006] Preferably, the U-shaped ceramic sleeve has an upper dovetail hole and a lower dovetail hole.

[0007] Preferably, the U-shaped steel plate has positioning blind holes.

[0008] Preferably, the partition plate has an avoidance through hole, the U-shaped steel plate has a positioning through hole, and the U-shaped ceramic sleeve has a disassembly hole.

[0009] Preferably, the partition plate and the U-shaped steel plate are connected by a fixing pin.

[0010] Preferably, the partition plate has a bolt hole one, and the support block has a bolt hole two.

[0011] Preferably, the support block has bolt holes and a snap-fit ​​groove.

[0012] This utility model provides a wear-resistant ceramic grid screen device. It has the following beneficial effects:

[0013] (1) When the U-shaped ceramic sleeve of this wear-resistant ceramic screen device is damaged, only the partition blocks on both sides of the partition plate need to be removed to separate the partition plate from the device. Then, the fixing pin 2 can be knocked out from the disassembly hole of the U-shaped ceramic sleeve to release its connection with the partition plate. The entire replacement process does not require complicated equipment. Compared with the traditional welded structure that requires cutting and disassembly, the time consumption is reduced, which greatly improves the maintenance efficiency. Moreover, the cost of replacing the ceramic sleeve once is reduced, which meets the needs of rapid maintenance of vulnerable parts and facilitates the daily operation and maintenance of the equipment.

[0014] (2) This wear-resistant ceramic screen device constructs a stable structure through various methods such as bolt connection and plug-in positioning. The support side blocks and support frame plates are bolted together, avoiding welding heat deformation, ensuring assembly accuracy, and enhancing overall rigidity. At the same time, combined with high-temperature ceramic adhesive to fill the gaps, compared with traditional welding, it avoids high-temperature damage to ceramic materials. Through the dual effects of mechanical locking and adhesive bonding, the interface bonding strength is greatly improved, the overall mechanical strength is enhanced, it can better withstand material impact, and extend the service life of the equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a cross-sectional view of the dividing edge block and supporting bone plate of this utility model;

[0018] Figure 3 This is an exploded structural diagram of a portion of the U-shaped steel plate and fixing pin of this utility model;

[0019] Figure 4 This is a cross-sectional exploded view of the U-shaped steel plate and the partition plate of this utility model.

[0020] The following are the reference numerals: 1. Supporting edge block; 2. Supporting rib plate; 3. Insertion groove; 4. Separating rib plate; 5. U-shaped steel plate; 6. U-shaped ceramic sleeve; 7. Lower dovetail hole; 8. Positioning blind hole; 9. Clearance through hole; 10. Positioning through hole; 11. Disassembly hole; 12. Fixing pin one; 13. Fixing pin two; 14. Bolt hole one; 15. Bolt hole two; 16. Bolt hole three; 17. Separating edge block.

[0021] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0023] Please see Figures 1-4 This utility model proposes a wear-resistant ceramic grid screen device, including a support block 1, on which a support plate 2 is provided. The support block 1 and the support plate 2 are connected by bolts to form the basic support structure of the grid frame, enhancing the overall rigidity. The support plate 2 has insertion slots 3, and multiple sets of insertion slots 3 are provided. The size of the insertion slots 3 matches that of the partition plates 4, facilitating quick insertion and positioning, and improving assembly efficiency. The partition plates 4 can be inserted into the insertion slots 3. The partition plates 4 are connected to the support plate 2 through insertion, forming the transverse support structure of the grid. The insertion structure achieves the pre-positioning of the support plate 2 and the partition plates 4. Compared with traditional welding connections, it can avoid thermal deformation problems, improve assembly accuracy and structural stability. The partition plates 4 are provided with partition blocks 1 on both sides. 7. The partition block 17 is fixed to the partition bone plate 4 by bolts to enhance the lateral stability of the partition bone plate 4 and prevent deformation under stress. A U-shaped steel plate 5 is detachably connected to the partition bone plate 4. A U-shaped ceramic sleeve 6 is detachably connected to the outer wall of the U-shaped steel plate 5. The detachable connection method replaces the traditional welding structure, leaving room for operation for subsequent replacement of ceramic components and meeting the needs of rapid maintenance of vulnerable parts. The U-shaped ceramic sleeve 6, as a wear-resistant layer, directly bears the impact of materials. The U-shaped steel plate 5 and the U-shaped ceramic sleeve 6 are connected by a fixing pin 12. The fixing pin 12 penetrates the U-shaped steel plate 5 and the ceramic sleeve to form a mechanical positioning. Compared with the welding process, the fixing pin connection structure can avoid the thermal damage to the ceramic material caused by high-temperature welding. At the same time, the dual fixation of mechanical locking and adhesive bonding significantly improves the interface bonding strength.

[0024] In this utility model, the U-shaped ceramic sleeve 6 has an upper dovetail hole and a lower dovetail hole 7. The upper dovetail hole is located above the lower dovetail hole 7. The positioning through hole 10 is at the same horizontal position as the upper dovetail hole. The U-shaped steel plate 5 has a positioning blind hole 8. By passing the fixing pin 12 through the lower dovetail hole 7 and the positioning blind hole 8, the fixing work of the U-shaped steel plate 5 and the U-shaped ceramic sleeve 6 is completed. The inner wall of the U-shaped ceramic sleeve 6 and the U-shaped steel plate 5 are also bonded with high-temperature ceramic adhesive (such as phosphate adhesive, temperature resistance 1200℃). The adhesive layer thickness is controlled at 0.1-0.3mm to fill the gap between the dovetail hole and the dovetail tenon (the dovetail tenon on the fixing pin 12 and the fixing pin 2 13), further ensuring the fixing effect of the U-shaped steel plate 5 and the U-shaped ceramic sleeve 6. When the U-shaped ceramic sleeve 6 is damaged, it can be directly knocked shut, and then the adhesive area can be cleaned to facilitate the installation of the old U-shaped steel plate 5 and the new U-shaped ceramic sleeve 6.

[0025] Furthermore, the partition plate 4 has an clearance through hole 9, the U-shaped steel plate 5 has a positioning through hole 10, and the U-shaped ceramic sleeve 6 has a disassembly hole 11. The partition plate 4 and the U-shaped steel plate 5 are connected by a fixing pin 2 13. By passing the fixing pin 2 13 through the upper dovetail hole, the positioning through hole 10, and the disassembly hole 11 in sequence, the dovetail on the fixing pin 2 13 is engaged with the upper dovetail hole, thus completing the fixation of the partition plate 4 and the U-shaped steel plate 5. The partition plate 4 has a bolt hole 14, the support side block 1 has a bolt hole 2 15, the support side block 1 has a bolt hole 3 16, and the support side block 1 has a snap-fit ​​groove.

[0026] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install and complete the circuit debugging work according to the needs of use to ensure that all electrical appliances can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here.

[0027] In use, the support block 1 is first connected to the blast furnace hopper through bolt hole 16. Using nuts and bolts for fastening, compared to traditional welding, on-site construction time can be reduced by 50%, and the disassembled parts can be reused, effectively reducing equipment modification losses by more than 30%. Subsequently, the support plate 2 and support block 1 are installed and fixed by using bolt holes 15 on the support block 1 and 14 on the support plate 2, along with nuts and bolts. The symmetrical design of the support plate 2 with support blocks 1 on both sides reduces the bending stress of the support structure by 40%. The statically determinate structure formed by the bolt group allows for precise torque control to achieve uniform stress distribution. Compared to the uncontrollable stress distribution of welding, load uniformity is improved, significantly enhancing the overall support effect.

[0028] When installing the partition structure, first connect and fix the two sides of the partition plate 4 to the partition side block 17 using nuts and bolts. The partition side block 17 is similar in shape to the support side block 1 and has the same bolt hole layout. This standardized design improves the interchangeability of components. Next, insert the partition plate 4 into the insertion groove 3 of the support plate 2, and then connect the partition side block 17 to the blast furnace hopper using nuts and bolts. The entire installation process does not require complicated tools and can be completed quickly by a single person.

[0029] Compared to traditional welded screen devices, this invention offers significant advantages in strength and ease of maintenance. When the U-shaped ceramic sleeve 6 on a set of partition plates 4 is damaged, only the partition blocks 17 on both sides of the corresponding partition plate 4 need to be removed to separate the partition plate 4 from the device. This significantly reduces the time required compared to the traditional welded structure which requires cutting and disassembly. Subsequently, the fixing pin 13 is knocked out from the disassembly hole 11 of the U-shaped ceramic sleeve 6, detaching it from the partition plate 4. The entire replacement process requires no specialized equipment and does not damage other components, reducing the cost of replacing the ceramic sleeve per unit and greatly improving the efficiency and economy of equipment maintenance.

[0030] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A wear-resistant ceramic screen device, comprising a support block (1), characterized in that: A support plate (2) is provided on the support side block (1). A insertion groove (3) is provided on the support plate (2). A partition plate (4) can be inserted into the insertion groove (3). A partition side block (17) is provided on both sides of the partition plate (4). A U-shaped steel plate (5) is detachably connected to the partition plate (4). A U-shaped ceramic sleeve (6) is detachably connected to the outer wall of the U-shaped steel plate (5). The U-shaped steel plate (5) and the U-shaped ceramic sleeve (6) are connected by a fixing pin (12).

2. The wear-resistant ceramic screen device according to claim 1, characterized in that: The U-shaped ceramic sleeve (6) has an upper dovetail hole and a lower dovetail hole (7).

3. The wear-resistant ceramic screen device according to claim 1, characterized in that: The U-shaped steel plate (5) is provided with positioning blind holes (8).

4. The wear-resistant ceramic screen device according to claim 1, characterized in that: The partition plate (4) has an avoidance through hole (9), the U-shaped steel plate (5) has a positioning through hole (10), and the U-shaped ceramic sleeve (6) has a disassembly hole (11).

5. The wear-resistant ceramic screen device according to claim 1, characterized in that: The partition plate (4) and the U-shaped steel plate (5) are connected by a fixing pin (13).

6. The wear-resistant ceramic screen device according to claim 1, characterized in that: The partition plate (4) has a bolt hole 1 (14), and the support block (1) has a bolt hole 2 (15).

7. The wear-resistant ceramic screen device according to claim 1, characterized in that: The support block (1) has bolt holes (16) and a snap-fit ​​groove.

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