CN202180201U - Protective sleeve for lower nozzle - Google Patents
Protective sleeve for lower nozzle Download PDFInfo
- Publication number
- CN202180201U CN202180201U CN2011202475596U CN201120247559U CN202180201U CN 202180201 U CN202180201 U CN 202180201U CN 2011202475596 U CN2011202475596 U CN 2011202475596U CN 201120247559 U CN201120247559 U CN 201120247559U CN 202180201 U CN202180201 U CN 202180201U
- Authority
- CN
- China
- Prior art keywords
- lower nozzle
- river
- protective sleeve
- mouth
- utility
- 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 - Fee Related
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The utility model belongs to the field of steel making equipment, and particularly discloses a protective sleeve for a lower nozzle, which comprises a lower nozzle body and a metal sleeve disposed on the outside of the body. Inner surfaces of both the body and the metal sleeve are in rough surface structures. Due to rough surfaces, the protective sleeve for the lower nozzle is fixed easily, cold cracking of bricks of the lower nozzle of a liquid steel tank is effectively stopped, and steel leakage accidents of the lower nozzle are prevented.
Description
Technical field
The utility model belongs to the steelmaking equipment field, is specifically related to a kind of protective sleeve that is used to protect molten steel jar lower nozzle brick.
Background technology
The existing steel that waters is made up of fire-resistant base, mud and box hat three-decker with lower nozzle brick, smears one deck mud in the outside of fire-resistant base, the outer wrap box hat of mud layer.Manufacturing process is complicated, must just can process finished product through redrying after especially smearing mud, and multiple tracks is produced and very easily produced waste product, and to adorn shell be manual work all, and the manpower consumption is bigger.
The bleed-out problem appears for solving common steel-making; The measure that the steel mill that has is taked outside lower nozzle brick, to install the iron sheet cover additional is in order to the protection lower nozzle brick; Yet; Because the iron sheet that uses cover generally is the bottom that only wraps in down the mouth of a river, therefore the problem of air-breathing bleed-out is not effectively solved, and proves through long-term observation and production practices; It is the top that occurs in down the mouth of a river that the following mouth of a river cracks the air-breathing position overwhelming majority, and the iron sheet cover that is installed at the bottom just can't really play the whole effect at the mouth of a river down of protection.
The utility model content
The technical purpose of the utility model is the deficiency to prior art, a kind of easy fixation is provided, and effectively stops molten steel jar lower nozzle brick cold cracking phenomenon, prevents down the following mouth of a river protective sleeve of mouth of a river bleed-out accident.
The technical scheme that realizes the utility model technical purpose is: a kind of mouth of a river protective sleeve down; Comprise following mouth of a river body and place said external metallic sheath; Said metallic sheath is by forming with following mouth of a river outside dimension and corresponding different two cylinders and two conically shapeds of diameter of shape, and said body and said metallic sheath inner surface are the matsurface structure.
As the further optimization to last technical scheme, said matsurface is in particular the frosting structure.
Compared with prior art, a kind of beneficial effect of mouth of a river protective sleeve down of the utility model mainly shows as: easy fixation, and effectively stop molten steel jar lower nozzle brick cold cracking phenomenon, prevent down mouth of a river bleed-out accident.
Description of drawings
Shown in Figure 1 is a kind of structural representation of mouth of a river protective sleeve down of the utility model.
The specific embodiment
As one of most preferred embodiment of a kind of down mouth of a river of the utility model protective sleeve; Referring to accompanying drawing 1; Comprise following mouth of a river body 2 and place the metallic sheath 1 outside the body 2; Metallic sheath 1 is by forming with following mouth of a river outside dimension and corresponding different two cylinders and two conically shapeds of diameter of shape, and body 2 and metallic sheath 1 inner surface are the matsurface structure.
Particularly, matsurface is the frosting structure.
In sum; After those of ordinary skill in the art reads the utility model file; Technical scheme and technical conceive according to the utility model need not the replacement that scheme between other various corresponding conversion scheme or each embodiment of the utility model is made in creative mental labour, all belong to the scope that the utility model is protected.
Claims (2)
1. following mouth of a river protective sleeve; Comprise following mouth of a river body and place said external metallic sheath; It is characterized in that; Said metallic sheath is by forming with following mouth of a river outside dimension and corresponding different two cylinders and two conically shapeds of diameter of shape, and said body and said metallic sheath inner surface are the matsurface structure.
2. mouth of a river protective sleeve down according to claim 1 is characterized in that said matsurface architecture is the frosting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202475596U CN202180201U (en) | 2011-07-14 | 2011-07-14 | Protective sleeve for lower nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202475596U CN202180201U (en) | 2011-07-14 | 2011-07-14 | Protective sleeve for lower nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202180201U true CN202180201U (en) | 2012-04-04 |
Family
ID=46173250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202475596U Expired - Fee Related CN202180201U (en) | 2011-07-14 | 2011-07-14 | Protective sleeve for lower nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202180201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259450A (en) * | 2014-09-30 | 2015-01-07 | 衡阳华菱钢管有限公司 | Ladle down nozzle with bowl-shaped seal ring |
-
2011
- 2011-07-14 CN CN2011202475596U patent/CN202180201U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259450A (en) * | 2014-09-30 | 2015-01-07 | 衡阳华菱钢管有限公司 | Ladle down nozzle with bowl-shaped seal ring |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120404 Termination date: 20120714 |