CN2797375Y - Reducing sleeve for tuyere of blast furnace - Google Patents
Reducing sleeve for tuyere of blast furnace Download PDFInfo
- Publication number
- CN2797375Y CN2797375Y CN 200520041023 CN200520041023U CN2797375Y CN 2797375 Y CN2797375 Y CN 2797375Y CN 200520041023 CN200520041023 CN 200520041023 CN 200520041023 U CN200520041023 U CN 200520041023U CN 2797375 Y CN2797375 Y CN 2797375Y
- Authority
- CN
- China
- Prior art keywords
- tuyere
- blastfurnace
- air port
- drill holder
- blast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Blast Furnaces (AREA)
Abstract
The utility model relates to a tuyere device of a blastfurnace, particularly a diameter changing sleeve device for a tuyere of a blastfurnace. The utility model solves the technical problems that the air ingress area of a tuyere of the existing blastfurnace, nonuniform work of the blastfurnace condition due to plugging with a clay gun, the plugging is not loose, etc. The utility model provides a novel diameter changing sleeve for a tuyere of a blastfurnace, which is in the tubular structure of a hollow truncated cone which is match with the shape of the inner wall of the tuyere. A diameter reducing cylindrical surface is arranged at the front end of the novel diameter changing sleeve for a tuyere of a blastfurnace, a half paraboloid which is connected with the cylindrical surface is arranged at the point of the length of 50 mm-90 mm to the outer wall of the front end of the novel diameter changing sleeve for a tuyere of a blastfurnace. The utility model which is a heat resisting ceramic piece is mainly used for changing the air ingress area of the blastfurnace in the special production condition of the blastfurnace.
Description
Technical field:
The utility model relates to a kind of blast-furnace tuyere device, particularly a kind of blast-furnace tuyere drill holder device.
Background technology:
The air port incoming air area is certain when the blast furnace ordinary production.But the little air quantity operation of blast furnace opening initial stage needs to guarantee certain blast energy that its incoming air area will change like this; In actual production,, also to change the air port area flexibly according to the demand of the special working of a furnace of blast furnace.Traditional method adopts the stifled air port of stemming to change blast furnace air inlet air port area, guarantees certain blast energy.This method only considers to change blast furnace air inlet air port area, and the air port that is blocked of formation is the work dead band, causes furnace cylinder working inhomogeneous, brings certain difficulty for the recovery conditions of blast furnace; Stifled air port is manual operation, it is stifled not tight to occur the air port easily, when conditions of blast furnace recovered, the not tight air port of shutoff was blown open easily, caused that this work dead band, air port gathers half mushy stage slag iron and be melted to pour in and burn out the air port cooling apparatus in the air port and cause blast furnace stopping production damping down; Along with the furnace condition recovery progress is goed deep into, the air port area needs progressively to increase in addition, and the air port that is blocked will be disclosed out one by one, and the air port that often is blocked is disclosed not open and is forced to cause blast furnace staying to disclose the air port, influences defectives such as blast furnace production.
Summary of the invention:
The technical issues that need to address of the present invention are: provide one simply, air port drill holder easily.The certain blast energy air intake air port area requirements of required assurance guaranteed again that the work of blast furnace hearth circumference was even when both having satisfied blast furnace production; Change the demand of air port area when both having satisfied the conditions of blast furnace recovery flexibly, do not influence blast furnace production when guaranteeing change air port area again.
The technical solution of the utility model: a kind of new blast-furnace tuyere drill holder is provided, for with the air port inner wall shape open circles frustum tubular structure that is complementary, front end is the undergauge cylindrical surface, and front end outer wall 50mm～90mm place has half throwing face to connect the cylindrical surface, is the heatproof ceramic member.
The utility model compared with prior art, because dwindling the air port area can add the cover method by the air port and finish, blast furnace opening initial stage and the certain blast energy of the special working of a furnace thereof had both been guaranteed, can make the operation of blast furnace full blast again, impel the work of blast furnace hearth circumference even, avoided bringing the air port to gush slag iron and burnt out the air port cooling apparatus and cause blast furnace stopping production damping down incident, helped to accelerate the furnace condition recovery progress because of the inhomogeneous formation regional work of cupola well circumference work dead band; The air port drill holder can change the air port area flexibly in addition, is not disclosed not open the influence of specifying the air port and needing stifled air port to blow open when recovering the working of a furnace; Front end outer wall 50mm～90mm place has half throwing face to connect the cylindrical surface to avoid little cover inner wall overlaying place to have occurring between burr and the drill holder outer wall leaking the pressure phenomenon, can adjust and tuyere small sleeve inwall and air port drill holder outer wall are in sealed state when guaranteeing air intake effect; Utilize the frangible characteristics of ceramic material fragility to disclose very facility of air port, not only safe but also reduce labor intensity.
Description of drawings:
Accompanying drawing is the utility model structural representation.
Among the figure: the 1-ceramic hollow frustum of a cone, 2-outer wall bore, 3-drill holder thickness, 4-half throwing face, the 5-cylindrical surface, 6-is small-bore.
Embodiment:
Referring to accompanying drawing, a kind of blast-furnace tuyere drill holder device is for open circles frustum, the front end that inside and outside wall is arranged has half throwing face 4 and cylindrical surface 5.Be processed into the ceramic hollow frustum of a cone 1 of inside and outside wall with the heatproof pottery, small-bore 6 produce required incoming air area according to blast furnace sets, outer wall bore 2 is specified according to tuyere diameter, tapering, and drill holder thickness 3 is decided L=R-R * [(n-n apart from next between inside and outside the drill holder
1) ÷ n]
1/2(in the formula: L-represents that drill holder thickness, R-represent that existing tuyere small sleeve front inner wall radius, n-represent blast-furnace tuyere number of elements, n
1-expression needs stifled air port number of elements in the original plan), as: existing tuyere small sleeve front inner wall radius is that 65mm, blast-furnace tuyere number of elements are 20, need 10 of stifled air port numbers of elements in the original plan, that is: drill holder thickness ≈ 19mm, get 19mm, make half throwing face 4 and connect cylindrical surface 5 and adjust excentric shaft about when installing up and down at drill holder front end outer wall 50mm～90mm place, and nose circle cylinder 5 thickness lower limits guarantee at 〉=5mm.
The concrete operations step: blast-furnace tuyere diameter area is decided the small-bore diameter of drill holder according to the required requirement of dwindling the tuyere diameter area and in producing, the drill holder length range is got 0.4～0.6 times of tuyere small sleeve length, drill holder outer wall tapering ginseng is with tuyere small sleeve inwall tapering, make half throwing face and connect the cylindrical surface and guarantee to connect cylindrical surface wall thickness lower limit and guarantee to come Design and Machining mould shape at 〉=5mm at drill holder outer wall front end 50mm～90mm place, get ceramic material after mould shape is finished and make raw material, make drill holder by processing, setting, roasting.After tuyere small sleeve is installed, drill holder put into when blast furnace opening uses and get final product, treat when the special working of a furnace of blast furnace is used to send into behind the blast furnace stopping production damping down and need add within the little cover that overlap air port, these air ports add to overlap discloses broken ceramic drill holder with a long hammer drill from the air port tegillum when blast furnace needs to change the air port area aborning and gets final product.
Claims (3)
1, blast-furnace tuyere drill holder is characterized in that: drill holder is shaped as and the air port inner wall shape open circles frustum tubular structure that is complementary.
2, blast-furnace tuyere drill holder according to claim 1 is characterized in that: the drill holder front end is the undergauge cylindrical surface, and front end outer wall 50mm～90mm place has half throwing face to connect the cylindrical surface.
3, blast-furnace tuyere drill holder according to claim 1 is characterized in that: drill holder is the heatproof ceramic member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520041023 CN2797375Y (en) | 2005-04-21 | 2005-04-21 | Reducing sleeve for tuyere of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520041023 CN2797375Y (en) | 2005-04-21 | 2005-04-21 | Reducing sleeve for tuyere of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2797375Y true CN2797375Y (en) | 2006-07-19 |
Family
ID=36868611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520041023 Expired - Lifetime CN2797375Y (en) | 2005-04-21 | 2005-04-21 | Reducing sleeve for tuyere of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2797375Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234696A (en) * | 2010-04-21 | 2011-11-09 | 重庆钢铁(集团)有限责任公司 | Method of increasing air quantity when blast furnace blows in without damping down |
| CN102286651A (en) * | 2011-08-26 | 2011-12-21 | 秦皇岛首秦金属材料有限公司 | Manufacture method of durable tuyere reducing small sleeve for controlling smelting intensity of blast furnace |
| CN102605124A (en) * | 2012-04-16 | 2012-07-25 | 宗品禾 | Blast furnace reducing tuyere short set |
| CN110628975A (en) * | 2019-09-11 | 2019-12-31 | 大冶特殊钢有限公司 | Tuyere ceramic sleeve for blast furnace ironmaking |
-
2005
- 2005-04-21 CN CN 200520041023 patent/CN2797375Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234696A (en) * | 2010-04-21 | 2011-11-09 | 重庆钢铁(集团)有限责任公司 | Method of increasing air quantity when blast furnace blows in without damping down |
| CN102286651A (en) * | 2011-08-26 | 2011-12-21 | 秦皇岛首秦金属材料有限公司 | Manufacture method of durable tuyere reducing small sleeve for controlling smelting intensity of blast furnace |
| CN102605124A (en) * | 2012-04-16 | 2012-07-25 | 宗品禾 | Blast furnace reducing tuyere short set |
| CN110628975A (en) * | 2019-09-11 | 2019-12-31 | 大冶特殊钢有限公司 | Tuyere ceramic sleeve for blast furnace ironmaking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150421 Granted publication date: 20060719 |