CN218224643U

CN218224643U - Novel tundish nozzle protection structure

Info

Publication number: CN218224643U
Application number: CN202221074846.6U
Authority: CN
Inventors: 季必云; 汪雷; 吴宗斌
Original assignee: Maanshan Jiangrun Metallurgy Co ltd
Current assignee: Maanshan Jiangrun Metallurgy Co ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2023-01-06
Anticipated expiration: 2032-05-06

Abstract

The utility model discloses a novel tundish nozzle protection structure, which belongs to the technical field of molten steel smelting equipment. The utility model discloses a novel tundish nozzle protection structure, which comprises a tundish nozzle at the bottom of a tundish, wherein a steel cap is inserted above the tundish nozzle; the outer wall of the tundish nozzle is fixedly connected with a splash guard. The splash shield comprises a flat plate body, a clamping plate and a supporting plate, wherein the fixed end of the clamping plate is fixed on the back surface of the upper part of the plate body, and the free end of the clamping plate extends along the transverse direction of the plate body; the fixed end of the supporting plate is fixed on the back of the lower part of the plate body, and the free end of the supporting plate extends upwards along the vertical direction of the plate body. When the middle ladle steel shell is used, the upper part of the plate body is clamped at the bottom of the middle ladle steel shell through the clamping plate, and the lower part of the plate body is supported through the supporting plate; the steel cap comprises a tabular cap body, plays a role in shielding, and is fixedly connected to a ring-shaped cutting sleeve below the cap body through a connecting rod, and plays a role in clamping a water gap hole at the bottom of the middle.

Description

Novel tundish nozzle protection structure

Technical Field

The utility model relates to a molten steel smelting equipment technical field, more specifically say, relate to a novel tundish mouth of a river protection architecture.

Background

The tundish of molten steel is an important device on a continuous casting production line, a water gap of the tundish is a refractory material product for pouring molten steel from the tundish to a crystallizer to prevent the molten steel from being oxidized, and is generally made of corundum and graphite as main raw materials. In addition, in the process of pouring molten steel into the crystallizer from a tundish nozzle, the molten steel is easy to splash out, so that safety accidents are caused, and the production safety is reduced.

Through retrieval, a patent of Chinese patent publication No. CN215587856U, bulletin Japanese 2022.01.21 discloses an energy-saving ladle long nozzle, which comprises a ladle long nozzle body, wherein a molten steel flow channel is arranged on the inner wall of the ladle long nozzle body, a tapered hole is formed in the top end of the molten steel flow channel, a high-temperature heat-insulating coating is fixedly sleeved on the outer side wall of the ladle long nozzle body, a refractory heat-insulating coating is fixedly sleeved on the outer wall of the high-temperature heat-insulating coating, and an anti-splash plate positioned on the outer side of the tapered hole is symmetrically and rotatably connected to the upper top wall of the ladle long nozzle body. The utility model discloses a cooperation through high temperature adiabatic coating and fire-resistant heat preservation coating is used and can be reduced the calorific loss of molten steel effectively, and the temperature drop range of molten steel when reducing to water the steel increases the benefit of steel mill to and the splash shield removes to the outer wall direction of molten steel injection pipe, makes its outer wall of pasting at the molten steel injection pipe, thereby spill when avoiding pouring into the molten steel, and cause the emergence of incident, and then the security when having improved production. The utility model discloses a splash guard through extension mouth of a river length and portable comes the splashproof, and the structure is complicated relatively, and installation cost is higher.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model aims to overcome the continuous casting in-process of molten steel among the prior art, when refractory material plugged up the mouth of a river easily and the molten steel pours into the crystallizer into, the easy spill of molten steel causes the problem of incident, plans to provide a novel tundish mouth of a river protection architecture, shelters from through the cap body, and it is downthehole at the tundish bottom mouth of a river that the rethread cutting ferrule card is downthehole, and then reaches the technological effect of avoiding refractory material to fall into the mouth of a river.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a novel tundish nozzle protection structure, which comprises a tundish nozzle at the bottom of a tundish, wherein a steel cap is inserted above the tundish nozzle to play a role in shielding so as to prevent refractory materials from falling into the nozzle; the anti-splash plate is fixedly connected to the outer wall of the tundish at the lower part of the tundish nozzle, so that the aim of splashing prevention when molten steel is injected into the crystallizer is fulfilled, and the anti-splash tundish is simple in structure and convenient to install.

Furthermore, the splash shield comprises a flat plate body, a clamping plate and a supporting plate, wherein the fixed end of the clamping plate is fixed on the back of the upper part of the plate body, and the free end of the clamping plate extends along the transverse direction of the plate body; the fixed end of the supporting plate is fixed on the back of the lower part of the plate body, and the free end of the supporting plate extends upwards along the vertical direction of the plate body. When the device is used specifically, the upper part of the plate body is clamped on two sides of a water gap at the bottom of the tundish through the clamping plate, and the lower part of the plate body is supported through the supporting plate; the steel cap comprises a tabular cap body, plays a role in shielding, and is fixedly connected with a ring-shaped cutting sleeve below the cap body through a connecting rod, and plays a role in being clamped in a water gap hole of a working layer at the bottom of the tundish.

Furthermore, the plate body is in a T shape, so that the installation weight can be effectively reduced on the premise of ensuring the anti-splash effect, and the installation is convenient; the connecting rods are uniformly distributed and fixed on the inner wall of the clamping sleeve, and are generally fixed in a welding mode, so that the fixing effect is firm.

Furthermore, the two clamping plates are symmetrically arranged and respectively comprise a first clamping plate and a second clamping plate which are clamped in two directions, so that the fixing effect is good; each connecting rod between the cap body and the clamping sleeve forms a grid structure, so that the flowing of molten steel is prevented from being blocked.

Furthermore, an observation hole is arranged on the plate body and close to the lower part of the clamping plate in a penetrating way, so that the flowing state of the molten steel can be observed conveniently and instantly; the bottom of the connecting rod reaches the bottom of the clamping sleeve, and the clamping sleeve and the cap body are connected and simultaneously play a role in clamping sleeve reinforcing ribs.

Furthermore, the clamping plate and the supporting plate are elastic plates, so that the circular nozzle can be conveniently fixed in a hoop mode and can be conveniently subjected to buffering type splash prevention, and unnecessary secondary splashing of molten steel is avoided; the cap body, the clamping sleeve and the connecting rod are all made of steel plates or steel bars, wastes are recycled, and the cap body, the clamping sleeve and the connecting rod can be melted in molten steel to avoid other impurities.

Furthermore, the plate body symmetrically surrounds and is fixed on two sides of the water gap at the bottom of the tundish through the clamping plate, and the bottom of the plate body inclines outwards so as to enlarge the splash-proof surface and strengthen the splash-proof effect; the bottom of the cutting ferrule is inserted into the water port of the tundish, so that the installation is rapid and convenient.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) The novel tundish nozzle protection structure of the utility model can clamp the upper part of the plate body at the two sides of the nozzle at the bottom of the tundish through the clamping plate, and then support the lower part of the plate body through the supporting plate, and has simple structure and convenient installation; the cap body shields the refractory material from falling into the water gap, and the refractory material is clamped in the water gap hole at the bottom of the tundish through the clamping sleeve, so that the structure is simple, and the installation is convenient;

(2) The novel tundish nozzle protection structure of the utility model has the advantages that the T-shaped plate body can effectively reduce the installation weight and is more convenient to install on the premise of ensuring the anti-splash effect; each connecting rod of the grid structure can ensure smooth molten steel fluidity;

(3) The utility model discloses a novel tundish nozzle protection architecture, the bottom of connecting rod is until the bottom of cutting ferrule, and the most of connecting rod all welds in the inner wall of cutting ferrule promptly, when playing the connection effect, still plays the effect of the strengthening rib of cutting ferrule, avoids the intensity of cutting ferrule not enough.

(4) The novel tundish nozzle protection structure of the utility model, the clamping plate and the supporting plate are elastic plates, so that the hoop type fixation and the buffering type splash prevention of the round nozzle are facilitated, and unnecessary secondary splashing of molten steel is avoided; the plate body symmetry formula centers on and fixes in middle package bottom mouth of a river both sides through the cardboard, and the bottom of plate body leans out, forms the horn mouth form of outer opening to enlarge the splashproof face and strengthen the splashproof effect.

Drawings

Fig. 1 is a schematic view of a sectional structure of a novel tundish nozzle protection structure of the utility model;

fig. 2 is a schematic back structural view of the splash shield of the present invention;

FIG. 3 is a schematic view of the bottom structure of the steel cap of the utility model;

fig. 4 is a schematic side view of the steel cap of the utility model.

In the figure: 1. a splash shield; 2. a steel cap; 10. a tundish; 11. a supporting plate; 12. a first clamping plate; 13. a second clamping plate; 14. an observation hole; 15. a plate body; 20. a tundish nozzle; 21. a cap body; 22. a card sleeve; 23. a connecting rod; 30. a crystallizer.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Example 1

The novel tundish nozzle protection structure of the embodiment is shown in fig. 1 and comprises a tundish nozzle 20 at the bottom of a tundish 10, wherein a steel cap 2 is inserted above the tundish nozzle 20 to play a role in shielding so as to prevent refractory materials from falling into the nozzle; the outer walls of the two sides of the water gap 20 at the bottom of the tundish 10 are fixedly connected with the splash-proof plates 1, so that the aim of splashing when molten steel is injected into the crystallizer is fulfilled, and the tundish has a simple structure and is convenient to install.

As shown in fig. 2, the splash shield 1 includes a plate body 15 in a flat plate shape, a fastening plate and a supporting plate 11, wherein a fixed end of the fastening plate is fixed on the upper back surface of the plate body 15, and is generally fixed by welding or detachably fixed by bolts, and a free end of the fastening plate extends along the transverse direction of the plate body 15; the fixed end of the supporting plate 11 is fixed on the back of the lower part of the plate body 15, and the free end of the supporting plate 11 extends upwards along the vertical direction of the plate body 15, so that the clamping plate and the supporting plate 11 are distributed in a T shape. When the pouring basket is used specifically, the front face of the upper part of the plate body 15 is clamped on two sides of the water gap 20 at the bottom of the pouring basket 10 through the clamping plates, and then the lower part of the plate body 15 is supported through the supporting plate 11. The cardboard is two for the symmetry setting generally, is cardboard one 12 and cardboard two 13 respectively, two-way chucking, and fixed effectual.

As shown in fig. 3 and 4, the steel cap 2 includes a plate-shaped cap body 21, which is a generally square plate and serves as a shield, and a cylindrical sleeve 22 fixedly connected to the lower portion of the cap body 21 through a connecting rod 23 and serving as a block in a nozzle hole of the bottom working layer of the tundish 10. The cutting ferrule 22 is generally formed by rolling a steel plate and then welding, and the area of the square plate is larger than the ring surface of the cutting ferrule 22. Sheltered from through the cap body 21, it is downthehole at middle package bottom working layer mouth of a river to pass through cutting ferrule 22 card, and then solves the technical problem that refractory material falls into the mouth of a river easily.

Example 2

The novel tundish nozzle protection structure of the embodiment has the same basic structure as that of the embodiment 1, and is different and improved in that: the plate body 15 is in a T shape, and can effectively reduce the installation weight and is convenient to install on the premise of ensuring the anti-splash effect. An observation hole 14 is arranged on the plate body 15 and close to the lower part of the clamping plate so as to be convenient for observing the flowing state of the molten steel in real time. Cardboard and fagging 11 are the elastic plate, and the convenience is fixed and the buffering formula splashproof to the staple bolt formula at circular mouth of a river, through the buffering, can effectively avoid molten steel to produce the unnecessary secondary and splash. As shown in fig. 1, the plate body 15 is symmetrically surrounded and fixed on both sides of the bottom nozzle 20 of the tundish through clamping plates, and the bottom of the plate body 15 is inclined outwards and faces the opening of the mold 30 to enlarge the splash-proof surface and enhance the splash-proof effect.

The connecting rods 23 are uniformly distributed and fixed on the inner wall of the cutting sleeve 22, and are generally fixed in a welding mode, so that the fixing effect is firm. Each connecting rod 23 between the cap body 21 and the ferrule 22 forms a grid structure to avoid blocking the flow of molten steel. The bottom of connecting rod 23 is to the bottom of cutting ferrule 22, and the great part of connecting rod 23 all welds the inner wall in cutting ferrule 22 promptly, when connecting cutting ferrule 22 and cap body 21, still plays the effect of cutting ferrule 22 strengthening rib, and in the continuous casting process, avoids cutting ferrule 22 intensity not enough. The cap body 21, the ferrule 22 and the connecting rod 23 can be made of steel plates or steel bars, and can be melted in molten steel to avoid other impurities. As shown in figure 1, the bottom end of the cutting sleeve 22 is inserted into a water gap hole of a working layer at the bottom of the tundish, so that the installation is convenient and quick.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a novel tundish nozzle protection architecture, includes tundish nozzle (20) of tundish (10) bottom, its characterized in that: a steel cap (2) is inserted above the tundish nozzle (20), and an anti-splash plate (1) is fixedly connected to the outer wall of the tundish (10) at the lower part of the nozzle (20).

2. The novel tundish nozzle protection structure of claim 1, wherein: the splash guard (1) comprises a plate body (15), a clamping plate and a supporting plate (11), wherein the fixed end of the clamping plate is fixed on the back of the upper part of the plate body (15), and the free end of the clamping plate extends along the transverse direction of the plate body (15); the fixed end of the supporting plate (11) is fixed on the back of the lower part of the plate body (15), and the free end of the supporting plate (11) extends upwards along the vertical direction of the plate body (15); the steel cap (2) comprises a tabular cap body (21) and a cylindrical cutting sleeve (22) fixedly connected to the lower part of the cap body (21) through a connecting rod (23).

3. The novel tundish nozzle protection structure of claim 2, characterized in that: the plate body (15) is T-shaped; the connecting rods (23) are uniformly distributed and fixed on the inner wall of the clamping sleeve (22).

4. The novel tundish nozzle protection structure of claim 2, wherein: the two clamping plates are symmetrically arranged and respectively comprise a first clamping plate (12) and a second clamping plate (13); each connecting rod (23) between the cap body (21) and the clamping sleeve (22) forms a grid structure.

5. The novel tundish nozzle protection structure according to any one of claims 2 to 4, characterized in that: an observation hole (14) is formed in the plate body (15) and is close to the lower part of the clamping plate; the bottom end of the connecting rod (23) reaches the bottom of the clamping sleeve (22).

6. The novel tundish nozzle protection structure of claim 5, characterized in that: the clamping plate and the supporting plate (11) are elastic plates; the cap body (21), the clamping sleeve (22) and the connecting rod (23) are all made of steel plates or steel bars.

7. The novel tundish nozzle protection structure of claim 5, characterized in that: the plate body (15) symmetrically surrounds and is fixed at the bottom of the tundish nozzle (20) through a clamping plate, and the whole plate body (15) inclines outwards from top to bottom; the bottom end of the clamping sleeve (22) is inserted into a water gap hole of a working layer at the bottom of the tundish (10).