CN212704336U

CN212704336U - Heat preservation type ladle

Info

Publication number: CN212704336U
Application number: CN202021481056.0U
Authority: CN
Inventors: 陈娟; 柯昌君; 何四春
Original assignee: Jingzhou Huasheng New Material Co ltd; Yangtze University
Current assignee: Jingzhou Huasheng New Material Co ltd; Yangtze University
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-03-16
Anticipated expiration: 2030-07-23

Abstract

The utility model provides a heat preservation type steel ladle, which comprises an inner shell and an outer shell, wherein a hollow layer is enclosed between the inner shell and the outer shell, the hollow layer is filled with aerogel felt, and the top of the hollow layer is provided with a cover plate; the inner wall of the inner shell is sequentially and inwardly provided with a heat insulation layer, a permanent layer and a working layer, the heat insulation layer is made of asbestos boards or hard fiber heat insulation boards, the permanent layer is formed by pouring high-alumina pouring materials, and the working layer is formed by laying magnesia carbon bricks. The utility model discloses a setting up and pressing from both sides empty layer and adiabatic layer and form two-layer heat preservation, the ladle is thermal-insulated, heat preservation is effectual, effectively reduces the heat loss in the production process, has improved the security that the molten steel was transported.

Description

Heat preservation type ladle

Technical Field

The utility model relates to a metallurgical ladle technical field especially relates to a heat preservation type ladle.

Background

The steel ladle is an important container part in the metallurgical industry, is necessary equipment for containing, carrying and casting molten steel, and is also an external refining furnace of the molten steel, and the heat preservation performance of the steel ladle directly influences the normal production and production cost of the molten steel. At present, steel ladles used by domestic iron and steel enterprises generally have the problems of large molten steel temperature drop and high ladle wall temperature; the temperature of the molten steel is reduced too fast, which can cause a series of problems of overhigh temperature, prolonged refining time of the molten steel, increased consumption of alloy materials and oxygen, excessive inclusion and the like when the molten steel is discharged; the excessive temperature of the ladle wall can cause excessive heat radiated outside by the ladle, thereby deteriorating the working environment and influencing the production of field workers; the phenomena of reddening and steel leakage of the shell of the ladle are even caused due to poor heat insulation and heat preservation effects, and the safety is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model provides a heat preservation type ladle, it is poor with heat retaining effect that the ladle that has solved to exist among the prior art insulates against heat, and the security is difficult to the problem of guarantee.

According to the embodiment of the utility model, the heat preservation type steel ladle comprises an inner shell and an outer shell, wherein a hollow layer is enclosed between the inner shell and the outer shell, the hollow layer is filled with aerogel felt, and the top of the hollow layer is provided with a cover plate;

the inner wall of the inner shell is sequentially and inwardly provided with a heat insulation layer, a permanent layer and a working layer, the heat insulation layer is made of asbestos boards or hard fiber heat insulation boards, the permanent layer is formed by pouring high-alumina pouring materials, and the working layer is formed by laying magnesia carbon bricks.

Compared with the prior art, the utility model discloses following beneficial effect has:

through setting up interior casing and shell body to pack the aerogel felt in the double-layered sky layer that shell body and shell body formed, including the inner wall of casing inwards set up heat insulation layer, permanent layer and working layer in proper order, the heat insulation layer makes up into two-layer heat preservation with pressing from both sides the sky layer, can show the heat preservation thermal-insulated ability that improves the ladle, effectively reduces the heat loss in the production process, prevents that the ladle shell from overheated reddening, stops the bleed-out, effectively reduces the temperature of ladle shell outer wall, has improved the security.

Drawings

Fig. 1 is a schematic view of a main structure of an embodiment of the present invention.

Fig. 2 is an enlarged view of a point a in fig. 1.

In the above drawings: 1. an inner housing; 2. an outer housing; 20. a pin hole; 3. an interlayer is sandwiched; 4. a cover plate; 40. a top cover; 41. a boss; 42. a pin shaft; 5. a heat insulating layer; 6. a permanent layer; 7. and a working layer.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in fig. 1, an embodiment of the present invention provides a heat preservation type steel ladle, including an inner shell 1 and an outer shell 2, a hollow layer 3 is enclosed between the inner shell 1 and the outer shell 2, the hollow layer 3 is filled with aerogel felt, and a cover plate 4 is arranged on the top of the hollow layer 3;

the inner wall of the inner shell body 1 is sequentially inwards provided with a heat insulation layer 5, a permanent layer 6 and a working layer 7, the heat insulation layer 5 is made of an asbestos board or a hard fiber heat insulation board, the permanent layer 6 is formed by pouring high-alumina pouring materials, and the working layer 7 is formed by laying magnesia carbon bricks.

Specifically, the thickness of the permanent layer 6 and the working layer 7 arranged at the bottom of the inner shell 1 is greater than the thickness of the permanent layer 6 and the working layer 7 arranged on the side wall of the inner shell 1; the thickness of the outer housing 2 is greater than the thickness of the inner housing 1.

In the scheme, by arranging the inner shell 1 and the outer shell 2, the hollow layer 3 formed by the inner shell 1 and the outer shell 2 is filled with aerogel felts, the aerogel is in a nanometer pore space three-dimensional network structure, the fine nano-network structure effectively limits the propagation of local thermal excitation, is a solid material with the lowest thermal conductivity at present, the aerogel felt is arranged in the hollow layer 3, the inner shell 1 plays a role in protecting the aerogel felt, the inner wall of the inner shell 1 is sequentially provided with a heat insulation layer 5, a permanent layer 6 and a working layer 7, the heat insulation layer 5 is made of an asbestos plate or a hard fiber heat insulation plate and is tightly attached to the inner wall of the inner shell 1, the main function is to reduce heat loss, the heat insulation layer 5 and the hollow interlayer 3 form a two-layer heat insulation structure, the steel ladle has good heat insulation and preservation capability, is beneficial to temperature control in the steelmaking process, stabilizes the temperature of the molten steel in the tundish and realizes stable pouring; in addition, the permanent layer 6 is poured by high-alumina casting materials, the working layer 7 is paved by magnesia carbon bricks, the thickness of the permanent layer 6 and the thickness of the working layer 7 at the bottom of the inner shell 1 are respectively larger than the thickness of the permanent layer 6 and the working layer 7 arranged on the side wall of the inner shell 1, and the bearing performance of the steel ladle is further improved; when in building, firstly, the aerogel felt is fixed in the hollow layer 3 of the outer shell 2 and the inner shell 1, then the heat insulation layer 5 is fixed on the inner wall of the inner shell 1, then the permanent layer 6 is poured, and finally the working layer 7 is laid on the inner wall of the permanent layer 6.

As shown in fig. 2, a preferred structure of the cover plate 4 in the above solution is that the cover plate 4 comprises a top cover 40 and a boss 41 arranged at the bottom of the top cover 40, and the boss 41 cooperates with the hollow layer 3 to cover the cover plate 4 above the hollow layer 3. The bottom of the top cover 40 is further provided with at least one pin shaft 42, the top of the outer shell 2 is provided with a pin hole 20, and the pin shaft 42 is installed in a matching manner with the pin hole 20. Through setting up boss 41 and pegging graft boss 41 in pressing from both sides empty layer 3, top cap 40 and interior casing 1 and the cooperation of the roof of shell body 2 still set up round pin axle 42 in top cap 40 bottom, and round pin axle 42 prevents effectively that apron 4 from rotating in inserting the pinhole 20 at shell body 2 top for connect more reliable and more stable.

The hollow layer 3 and the heat insulation layer 5 both play a role in heat insulation, the larger the thickness is, the better the heat insulation effect is, and preferably, the thickness of the hollow layer 3 is 10-20 mm. The thickness of the heat insulation layer 5 is 10 mm-20 mm.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A heat preservation type ladle is characterized in that: the air-permeable composite pipe comprises an inner shell and an outer shell, wherein an interlayer is formed between the inner shell and the outer shell in an enclosing manner, aerogel felts are filled in the interlayer, and a cover plate is arranged at the top of the interlayer;

2. The insulated ladle of claim 1, wherein: the thickness of the permanent layer and the working layer arranged at the bottom of the inner shell is respectively larger than that of the permanent layer and the working layer arranged on the side wall of the inner shell.

3. The insulated ladle of claim 1, wherein: the thickness of the outer shell is greater than the thickness of the inner shell.

4. A heat-retaining ladle according to claim 3 wherein: the cover plate comprises a top cover and a boss arranged at the bottom of the top cover, and the boss is matched with the hollow clamping layer to enable the cover plate to be buckled above the hollow clamping layer.

5. The heat-retaining ladle according to claim 4, wherein: the bottom of the top cover is also provided with at least one pin shaft, the top of the outer shell is provided with a pin hole, and the pin shaft and the pin hole are installed in a matched mode.

6. The insulated ladle of claim 1, wherein: the thickness of the hollow layer is 10 mm-20 mm.

7. The insulated ladle of claim 1, wherein: the thickness of the heat insulation layer is 10 mm-20 mm.