Blast furnace tuyere sleeve sealing structure
By adopting a combination structure such as a stop ring plate, a limit ring plate and a sealing ring in the blast furnace air outlet casing, the problem of lax sealing of the air outlet casing is solved, and an efficient and low-cost sealing effect is achieved.
Patent Information
- Application Number
- CN202420923659.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-28
AI Technical Summary
During the metallurgical production process, the blast furnace air outlet casing is not tightly sealed and gas leaked. The existing sealing measures are long, have poor results and high costs.
A sealing structure including a small air vent sleeve and a mid-sleeve sleeve is designed, using a combination of a baffle ring plate, a limit ring plate, an outer step sealing platform, an inner step sealing platform, a sealing ring and a ring groove, and is connected and raised through threads. The slot mechanism improves sealing performance.
The effective sealing of the air outlet sleeve is achieved, the structure is simplified, the cost is reduced, and the sealing effect is improved.
Smart Images
Figure CN222294111U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of blast furnace tuyere sleeve sealing, in particular to a blast furnace tuyere sleeve sealing structure. Background Art
[0002] In the field of metallurgy, various metallurgical kilns are often used in the smelting process to achieve the smelting of metals through intensified smelting, such as the smelting of iron, copper, steel, lead, tin and other metals. The blast furnace is a comprehensive process, and each process parameter design has different degrees of influence on the blast furnace production. The blast furnace tuyere casing is one of the important air supply equipment for iron-making blast furnaces. The blast furnace blast and the fuel injected enter the blast furnace through the tuyere casing.
[0003] During the production process of the blast furnace, the small and medium-sized casings are subjected to thermal stress, which causes the small and medium-sized casings to deform and the mating surfaces to become line contacts, resulting in poor sealing. During the production process, gas leaks from the sealing surfaces of the small and medium-sized casings, causing the gas content on the blast furnace platform to exceed the standard, affecting the safety of personnel operations.
[0004] At present, the sealing of major small and medium-sized casings mainly adopts measures such as sealing surface glue coating to stop leakage, which has the disadvantages of long leakage treatment cycle, poor effect and high cost. Utility Model Content
[0005] In order to overcome the defects of the prior art such as long leakage treatment period, poor effect and high cost, the utility model provides a blast furnace tuyere casing sealing structure.
[0006] The technical solution adopted by the utility model to solve its technical problems is: a blast furnace tuyere sleeve sealing structure, comprising a small tuyere sleeve and a middle tuyere sleeve matched with the small tuyere sleeve, the right end of the small tuyere sleeve is provided with a baffle plate extending outward, the left end of the middle tuyere sleeve is provided with a limit ring plate extending inward, the left side of the baffle plate is provided with a protrusion, and the right side of the limit ring plate is provided with a groove matching the protrusion.
[0007] As a further improvement of the utility model, the small tuyere sleeve is threadedly connected to the middle tuyere sleeve.
[0008] As a further improvement of the utility model, the outer wall of the right end of the tuyere sleeve is provided with a plurality of continuous outer step sealing platforms, and the inner wall of the limiting ring plate is provided with an inner step sealing platform matching the outer step sealing platforms to improve the sealing performance.
[0009] As a further improvement of the utility model, a sealing ring is provided on the outer side of the baffle plate to improve the sealing performance.
[0010] As a further improvement of the utility model, a ring groove capable of fixing the sealing ring is provided on the outer side of the baffle ring plate.
[0011] As a further improvement of the utility model, a plurality of wavy protrusions are provided along the outer peripheral surface of the sealing ring to improve the sealing performance.
[0012] Compared with the prior art, the utility model has the beneficial effects: in this solution, after the small air outlet sleeve and the middle air outlet sleeve are connected, the protrusion on the left side of the baffle ring plate is inserted into the groove on the right side of the limiting ring plate, so that the two air outlet sleeves are sealed, with a simple structure, good effect and low cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0014] Figure 1 The utility model is a structural schematic diagram of a blast furnace tuyere casing sealing structure.
[0015] In the figure: 1. small air outlet sleeve; 2. middle air outlet sleeve; 3. baffle plate; 4. limit ring plate; 5. protrusion; 6. groove; 7. outer step sealing platform; 8. inner step sealing platform; 9. sealing ring; 10. ring groove. DETAILED DESCRIPTION
[0016] In order to make the technical solution and beneficial effects of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.
[0017] Reference Figure 1 The utility model embodiment discloses a blast furnace tuyere sleeve sealing structure, comprising a tuyere small sleeve 1 and a tuyere middle sleeve 2 matched with the tuyere small sleeve 1, a baffle plate 3 extending outward is provided at the right end of the tuyere small sleeve 1, a limiting ring plate 4 extending inward is provided at the left end of the tuyere middle sleeve 2, a protrusion 5 is provided on the left side of the baffle plate 3, and a groove 6 matching the protrusion 5 is provided on the right side of the limiting ring plate 4.
[0018] When in use, after the small tuyere sleeve 1 and the middle tuyere sleeve 2 are sleeved together, the protrusion 5 on the left side of the baffle ring plate 3 is inserted into the groove 6 on the right side of the limiting ring plate 4 to achieve sealing of the two tuyere sleeves.
[0019] Among them, the right end outer wall of the tuyere small sleeve 1 is provided with a plurality of continuous outer step sealing platforms 7, and the inner wall of the limiting ring plate 4 is provided with an inner step sealing platform 8 matching the outer step sealing platform 7. The tuyere small sleeve 1 is threadedly connected to the tuyere middle sleeve 2, so that the connection between the tuyere small sleeve 1 and the tuyere middle sleeve 2 is more stable, and the outer step sealing platform 7 cooperates with the inner step sealing platform 8 to achieve step sealing, thereby improving the sealing performance.
[0020] The outer side of the baffle plate 3 is provided with a sealing ring 9. The outer side of the baffle plate 3 is provided with an annular groove 10 capable of fixing the sealing ring 9. The sealing ring 9 is provided with a plurality of wavy protrusions along the outer peripheral surface. The sealing ring 9 is arranged in the annular groove 10 on the baffle plate 3, and after the air outlet small sleeve 1 and the air outlet middle sleeve 2 are sleeved, the outer side of the baffle plate 3 and the inner side of the air outlet middle sleeve 2 are both trumpet-shaped, and the sleeve connection realizes the extrusion of the sealing ring 9 to complete the sealing.
[0021] It should be understood that the specific embodiments described herein are only used to understand the present invention and are not used to limit the present invention. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.
Claims
1. A blast furnace tuyere casing sealing structure, characterized in that: The invention comprises a small air vent sleeve (1) and a middle air vent sleeve (2) matched with the small air vent sleeve (1); the right end of the small air vent sleeve (1) is provided with a baffle plate (3) extending outward; the left end of the middle air vent sleeve (2) is provided with a limit ring plate (4) extending inward; the left side of the baffle plate (3) is provided with a protrusion (5); and the right side of the limit ring plate (4) is provided with a groove (6) matching with the protrusion (5).
2. A blast furnace tuyere casing sealing structure according to claim 1, characterized in that: The small air port sleeve (1) is threadedly connected to the middle air port sleeve (2).
3. A blast furnace tuyere casing sealing structure according to claim 2, characterized in that: The right end outer wall of the tuyere sleeve (1) is provided with a plurality of continuous outer step sealing platforms (7), and the inner wall of the limiting ring plate (4) is provided with an inner step sealing platform (8) matching the outer step sealing platform (7).
4. A blast furnace tuyere casing sealing structure according to claim 3, characterized in that: A sealing ring (9) is provided on the outer side of the baffle plate (3).
5. A blast furnace tuyere casing sealing structure according to claim 4, characterized in that: An annular groove (10) capable of fixing the sealing ring (9) is provided on the outer side of the baffle ring plate (3).
6. A blast furnace tuyere casing sealing structure according to claim 5, characterized in that: A plurality of wavy protrusions are arranged along the outer peripheral surface of the sealing ring (9).