CN210632938U - Device for preventing nozzle of continuous casting tundish from being blocked - Google Patents
Device for preventing nozzle of continuous casting tundish from being blocked Download PDFInfo
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- CN210632938U CN210632938U CN201921181193.XU CN201921181193U CN210632938U CN 210632938 U CN210632938 U CN 210632938U CN 201921181193 U CN201921181193 U CN 201921181193U CN 210632938 U CN210632938 U CN 210632938U
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- continuous casting
- tundish
- protection casing
- protective cover
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Abstract
The utility model relates to a device for preventing continuous casting tundish nozzle from being blocked belongs to continuous casting technical field. The technical scheme is as follows: contain stopper rod (1), protection casing (2), soak water inlet (3), tundish (4) and flow steel hole (5), protection casing (2) are hollow round platform type, and the less one end of protection casing (2) diameter is fixed on stopper rod (1), and the great one end of protection casing (2) diameter is fixed on soaking water inlet (3) of tundish (4) in the middle of, is equipped with a plurality of flow steel holes (5) along the circumferencial direction on protection casing (2). The utility model has the advantages that: the continuous casting device has the advantages of simple structure and low cost, not only ensures the success rate of continuous casting and the smooth production, but also effectively isolates foreign matters such as falling of lining refractory materials of the tundish or falling of the ladle cover, ensures the purity of molten steel and improves the quality of casting blanks.
Description
Technical Field
The utility model relates to a device for preventing continuous casting tundish nozzle from being blocked belongs to continuous casting technical field.
Background
For continuous casting production, the success of casting is a crucial link of continuous casting production, and the improvement of the success rate of casting means the improvement of the operating rate of a casting machine, the improvement of yield and the increase of benefits. However, in the preparation process of continuous casting production, the tundish refractory generally needs to be baked for 3-5 hours, and during the long-time baking process, the conditions of slight falling of the tundish lining refractory, slight falling of the tundish cover and the like often occur, and when the fallen refractory is gathered near or falls into a tundish nozzle, the nozzle is blocked or stuck to the upper opening of the submerged nozzle. At the moment, when the continuous casting tundish is opened, molten steel cannot be poured into the crystallizer due to the blockage of a water gap, or the opening and closing of a stopper rod are blocked, so that the molten steel flow cannot be controlled, the molten steel overflows the crystallizer and other accidents are caused, the continuous casting opening failure is caused, and the normal continuous casting production is seriously influenced. Meanwhile, a series of adverse effects such as cost rise of continuous casting refractory materials, equipment burning loss, molten steel pressure station and the like are caused, and the method is adverse to the production sequence, the yield and quality improvement and the cost control of a steel plant.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a prevent device of package mouth of a river jam in middle of continuous casting, not only guaranteed that the continuous casting is opened and is watered success rate and production in a specified order, also guaranteed the purity of molten steel simultaneously, improved the casting blank quality, solve the problem that exists among the background art.
The technical scheme of the utility model is that:
the utility model provides a device that prevents continuous casting tundish nozzle from blockking up, contains stopper rod, protection casing, soaks the water inlet, middle package and flows the steel hole, the protection casing is hollow round platform type, and the less one end of protection casing diameter is fixed on the stopper rod, and the great one end of protection casing diameter is fixed on the water inlet of middle package, is equipped with a plurality of steel holes that flow along the circumferencial direction on the protection casing.
The protective cover is made of ceramic materials.
The inner diameter of the end with the smaller diameter of the protective cover is larger than the diameter of the stopper rod, the end with the smaller diameter of the protective cover is sleeved on the stopper rod, and the height of the protective cover is larger than the distance from the bottom of the stopper rod to the bottom working layer of the tundish.
The plurality of steel flowing holes in the protective cover are uniformly distributed along the circumferential direction of the protective cover.
The number of the steel flowing holes on the protective cover is four.
Adopt the utility model discloses, after the molten steel gets into middle package, contact with the protection casing to in flowing steel hole stream water inlet through on the protection casing, package inside lining resistant material drops or the be built by contract falls external foreign matter such as material and advances the water inlet in the middle of effectively keeping apart simultaneously, thereby guarantees the purity of molten steel.
The utility model has the advantages that: the continuous casting device has the advantages of simple structure and low cost, not only ensures the success rate of continuous casting and the smooth production, but also effectively isolates foreign matters such as falling of lining refractory materials of the tundish or falling of the ladle cover, ensures the purity of molten steel and improves the quality of casting blanks.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the protective cover of the present invention;
in the figure: the stopper comprises a stopper rod 1, a protective cover 2, a soaking port 3, a tundish 4 and a steel flowing hole 5.
Detailed Description
The invention will be further explained by way of example with reference to the accompanying drawings.
Referring to the attached drawings 1-2, the device for preventing the nozzle of the continuous casting tundish from being blocked comprises a stopper rod 1, a protective cover 2, a water immersion port 3, a tundish 4 and steel flowing holes 5, wherein the protective cover 2 is in a hollow round table shape, one end, with a smaller diameter, of the protective cover 2 is fixed on the stopper rod 1, one end, with a larger diameter, of the protective cover 2 is fixed on the water immersion port 3 of the tundish 4, and the protective cover 2 is provided with the steel flowing holes 5 along the circumferential direction.
The specific embodiment is as follows:
in this embodiment, referring to fig. 1 and 2, the outer surface of the shield 2 is bowl-shaped, and the interior thereof is hollow. The dimensions of which can be adapted to the dimensions of the stopper 1 and the infusion nozzle 3. For example: when the diameter of the stopper rod 1 is 135mm, the inner diameter of the smaller upper end of the protective cover 2 is 155mm, which is 5-10mm larger than the diameter of the stopper rod 1; the outer diameter of the lower end with the larger diameter of the protective cover 2 is 260mm, which is 10-20mm larger than the diameter of the immersion water inlet 3; the height of the protective cover 2 is 225mm, which is larger than the distance between the bottom of the stopper rod 1 and the bottom working layer of the tundish 4, and four steel flowing holes 5 are arranged around the protective cover 2, so that pure molten steel can flow into the water port conveniently.
The upper end of the protective cover 2 is sleeved on the stopper rod 1, and the lower end covers the matching part of the stopper rod 1 and the water immersion port 3.
The protective cover 2 is made of ceramic material and has the density of 1.5-4.0g/cm3The tundish is not deformed or cracked in the baking process, so that foreign matters such as refractory lining falling or ladle cover falling can be effectively prevented from entering the submerged nozzle, when the tundish is baked in continuous casting, the baking temperature in the tundish is about 1200 ℃, and the temperature is far lower than the melting point of a ceramic device, so that the device cannot be melted to block the nozzle. When the first furnace for continuous casting is started for casting, the casting temperature of molten steel is generally 1500-1600 ℃, and is far lower than the melting point of a ceramic device, so that the device is not melted; meanwhile, the density of the molten steel is 7.0g/cm3About, and the density of the protective cover 2 is 1.5-4.0g/cm3When molten steel enters the tundish and contacts with the protective cover 2, the molten steel smoothly flows into the water inlet through the steel flowing hole 5, and meanwhile, the protective cover 2 floats on the upper part of the liquid level, so that the submerged nozzle cannot be blocked or the content of impurities in the molten steel cannot be increased due to melting.
Claims (5)
1. The utility model provides a prevent device of continuous casting tundish mouth of a river jam which characterized in that: contain stopper rod (1), protection casing (2), soak water inlet (3), tundish (4) and flow steel hole (5), protection casing (2) are hollow round platform type, and the less one end of protection casing (2) diameter is fixed on stopper rod (1), and the great one end of protection casing (2) diameter is fixed on soaking water inlet (3) of tundish (4) in the middle of, is equipped with a plurality of flow steel holes (5) along the circumferencial direction on protection casing (2).
2. The apparatus for preventing clogging of a nozzle of a continuous casting tundish according to claim 1, wherein: the protective cover (2) is made of ceramic materials.
3. An apparatus for preventing clogging of a nozzle for a continuous casting tundish according to claim 1 or claim 2, wherein: the inner diameter of the smaller end of the diameter of the protective cover (2) is larger than the diameter of the stopper rod (1), the smaller end of the diameter of the protective cover (2) is sleeved on the stopper rod (1), and the height of the protective cover (2) is larger than the distance between the bottom of the stopper rod (1) and the bottom working layer of the tundish (4).
4. The apparatus for preventing clogging of a nozzle of a continuous casting tundish according to claim 1, wherein: the steel flowing holes (5) in the protective cover (2) are uniformly distributed along the circumferential direction of the protective cover (2).
5. An apparatus for preventing clogging of a nozzle for a continuous casting tundish according to claim 1 or 4, wherein: four steel flowing holes (5) are formed in the protective cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921181193.XU CN210632938U (en) | 2019-07-25 | 2019-07-25 | Device for preventing nozzle of continuous casting tundish from being blocked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921181193.XU CN210632938U (en) | 2019-07-25 | 2019-07-25 | Device for preventing nozzle of continuous casting tundish from being blocked |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210632938U true CN210632938U (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921181193.XU Active CN210632938U (en) | 2019-07-25 | 2019-07-25 | Device for preventing nozzle of continuous casting tundish from being blocked |
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| CN (1) | CN210632938U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290236A (en) * | 2021-05-31 | 2021-08-24 | 马鞍山钢铁股份有限公司 | Molten steel purification device for continuous casting tundish |
-
2019
- 2019-07-25 CN CN201921181193.XU patent/CN210632938U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290236A (en) * | 2021-05-31 | 2021-08-24 | 马鞍山钢铁股份有限公司 | Molten steel purification device for continuous casting tundish |
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