CN216039667U

CN216039667U - Hot-blast furnace heat accumulation checker brick and system of processing

Info

Publication number: CN216039667U
Application number: CN202120967030.5U
Authority: CN
Inventors: 李静
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2022-03-15
Anticipated expiration: 2031-05-07

Abstract

The utility model relates to the technical field of heat preservation of hot blast stoves, in particular to a heat storage checker brick for a hot blast stove, which is characterized by comprising a checker brick body, wherein through holes are uniformly distributed in the checker brick body, a radiation material jacket layer is arranged in the through holes, the checker brick body is made of conventional refractory materials, and the radiation material jacket layer is made of high-radiation refractory materials. The heat storage checker brick processing system comprises a primary press and a secondary press, wherein the primary press and the secondary press are respectively provided with a primary forming pressing die and a secondary forming pressing die; the primary press is used for forming a biscuit of the checker brick body; the secondary press is used for forming the biscuit of the heat storage checker brick. A plurality of the heat storage checker bricks. The heat storage checker brick has the advantages of large radiation material jacket layer thickness, good radiation heat conduction effect, difficult shedding and long service life. The processing system is molded and pressed for two times to ensure that the high-radiation refractory material of the heat storage checker brick is better combined with the checker brick body.

Description

Hot-blast furnace heat accumulation checker brick and system of processing

Technical Field

The utility model relates to the technical field of hot blast stoves, in particular to a heat storage checker brick of a hot blast stove and a processing system.

Background

The high-radiation coating technology is a surface treatment technology which coats a layer of coating material with high emissivity on the surface of a refractory material or a machine body and changes the physical and chemical properties of the surface of the original machine body. The energy-saving mechanism of the technology is that the absorption rate and the emissivity of the furnace lining to infrared radiation are improved by using a material with higher blackness, so that the complete combustion of fuel is promoted, and the fuel is saved; the thermal efficiency of the furnace is improved.

The checker bricks with seven holes, nineteen holes and twenty-seven holes are usually adopted as heat exchangers for a top-fired hot blast stove, in order to improve the heat energy heat storage quantity heat conduction radiation efficiency of the checker bricks, in recent ten years, high-radiation paint is adopted as a coating to realize the effect, the technology of dipping the radiation paint coating on the surface of the checker bricks has some disadvantages, the coating is not uniform in adhesive force and permeability due to simple and rough construction, so that the effect of easy falling off is not obvious in the use process, but in the ten years, the method also obtains the heat exchange effect higher than that of not coating the coating.

Once the top-fired hot-blast stove is built, the service life of the heat storage checker bricks can reach 15 years, and the method of dipping and coating the radiation coating is adopted, namely, the heat storage checker bricks are dipped in a container filled with the liquid radiation coating, the liquid radiation coating permeates into pores on the surfaces of the heat storage checker bricks, but the permeable layer is thinner and is generally less than 0.3 mm, the thickness of the permeable layer is more difficult to reach 1 mm, and the coating basically falls off within 3 years; the radiation layer is sparse, so that the radiation heat conduction effect is limited; in addition, when a plurality of checker bricks are combined into a whole to form the suspended ceiling of the top combustion type hot blast stove, the heat radiation and conduction effect is mainly achieved, the heat radiation and conduction effect is through holes, and the relative effect of other side parts is not large; thus, focusing on the solution of the radiation coating in the through-hole is one way to solve the drawbacks of the prior art.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the heat storage checker brick of the hot blast stove, which has long service life and good radiation heat conduction effect.

The technical scheme for solving the technical problems is as follows: the heat storage checker brick for the hot blast stove comprises a checker brick body, through holes are uniformly distributed on the checker brick body, and radiation material jacket layers are arranged in the through holes.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, the checker brick body is made of a conventional refractory material, and the radiation material jacket is made of a high-radiation refractory material.

Further, the conventional refractory material is one or more of rare earth oxide, silicon dioxide, corundum, clay, bentonite and spinel.

Further, the radiation material jacket layer is formed by pressing through secondary cloth in the through hole of the checker brick body.

Furthermore, the thickness of the radiation material jacket layer is 1-5 mm.

Furthermore, the thickness of the radiation material jacket layer is 2-4 mm.

Further, the through hole further comprises a semicircular hole arranged at the edge of the checker brick body, and a radiation material sleeve layer matched with the semicircular hole is arranged in the semicircular hole.

The utility model has the beneficial effects that: the radiation jacket layer in the through hole of the checker brick has large thickness and good radiation heat conduction effect, and the radiation jacket layer is not easy to fall off in the using process and has long service life. The mutually spliced heat-accumulating checker bricks can meet the service life requirement of the heat-accumulating checker bricks.

The utility model also discloses a hot blast stove heat storage checker brick processing system which comprises a primary press and a secondary press, wherein the primary press and the secondary press are respectively provided with a primary forming pressing die and a secondary forming pressing die; the primary press is used for forming a biscuit of the checker brick body; the secondary press is used for forming the biscuit of the heat storage checker brick.

The utility model has the beneficial effects that: the high-radiation refractory material of the heat storage checker brick is better combined with the checker brick body through twice molding and pressing, the heat storage checker brick is better in radiation heat conduction effect and longer in service life through twice pressing.

Further, the device also comprises a primary feeding device and a secondary feeding device which are used for respectively feeding the primary forming pressing die and the secondary forming pressing die.

The beneficial effect who adopts above-mentioned further scheme is, guarantees that the system can in time give one shot forming embossing mold utensil and post forming embossing mold utensil cloth.

Further, the device also comprises a checker brick body biscuit conveying device arranged between the primary press and the secondary press.

The technical scheme has the beneficial effect that the biscuit of the checker brick body after one-step forming and pressing is ensured to be stably conveyed to the secondary forming pressing die.

Further, the glue spraying device is arranged between the primary press and the secondary press or between the primary press and the secondary press.

The beneficial effect of adopting above-mentioned further scheme is, guarantee to spout glue before carrying out the secondary forming suppression on checker brick body biscuit.

The utility model has the beneficial effects that: the problems of uneven adhesion and permeability of the jacket layer and falling of the jacket layer are solved, the heat exchange conduction radiation efficiency of the heat accumulator of the hot blast stove is greatly improved, and the consumption of fuel gas is reduced.

Drawings

FIG. 1 is a schematic view of a thermal storage checker brick of the present invention;

FIG. 2 is a schematic structural view of a longitudinal section of the one-shot forming mold of the present invention;

FIG. 3 is a schematic structural view of a transverse section of the one-shot forming die of the present invention;

FIG. 4 is a schematic longitudinal cross-sectional view of the overmolding die of the utility model;

FIG. 5 is a schematic structural view of a transverse cross section of the secondary molding die of the present invention;

FIG. 6 is a schematic view of a hot blast stove heat storage checker brick processing system of the present invention;

in fig. 1 to 6, 1, a checker brick body; 2. a through hole; 3. a jacket layer; 4. a semicircular hole; 5. forming a pressing die at one time; 5-1, primary mold columns; 5-2, performing primary mould-forming; 5-3, primary lower die; 6. secondary forming pressing mould; 6-1, secondary mold columns; 6-2, secondary mould-loading; 6-3, secondary lower die.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1, the heat storage checker brick for the hot blast stove comprises a checker brick body 1, through holes 2 are uniformly distributed on the checker brick body 1, radiation material jacket layers 3 are arranged in the through holes 2, the checker brick body 1 is made of conventional refractory materials, and the radiation material jacket layers 3 are made of high-radiation refractory materials. The conventional refractory material is one or more of rare earth oxide, silicon dioxide, corundum, clay, bentonite and spinel.

The high-radiation refractory material is a refractory material with higher blackness;

the high-radiation refractory material is a high-radiation ceramic material.

The radiation material jacket layer 3 is formed by pressing through secondary cloth in the through hole 2 of the checker brick body 1.

The thickness of the radiation material jacket layer 3 is 1-5 mm. The through hole 2 further comprises a semicircular hole 4 arranged at the edge of the checker brick body 1, and a radiation material sleeve layer matched with the semicircular hole is arranged in the semicircular hole 4.

As shown in fig. 2-6, a hot blast stove heat storage checker brick processing system comprises a primary press and a secondary press, wherein the primary press and the secondary press are respectively provided with a primary forming pressing mold 5 and a secondary forming pressing mold 6; the primary press is used for forming a biscuit of the checker brick body; the secondary press is used for forming a biscuit of the heat storage checker brick, and particularly, a radiation material sleeve layer 3 is formed on the periphery of the through hole 2 on the basis of the biscuit of the checker brick body. The device also comprises a primary feeding device and a secondary feeding device which respectively feed the primary forming pressing die 5 and the secondary forming pressing die 6. The one-step forming pressing die 5 comprises a one-step die column 5-1, an one-step upper die 5-2 and an one-step lower die 5-3. The one-step forming pressing die 6 comprises a one-step die column 6-1, an one-step upper die 6-2 and an one-step lower die 6-3.

The checker brick body biscuit conveying device is arranged between the primary press and the secondary press.

The glue spraying device is arranged between the primary press and the secondary press or between the primary press and the secondary press.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A heat storage checker brick of a hot blast stove is characterized by comprising a checker brick body made of a first material, wherein through holes are uniformly distributed on the checker brick body, and a radiation material jacket layer made of a second material is arranged in the through holes;

the through hole further comprises a semicircular hole arranged at the edge of the checker brick body, and a radiation material sleeve layer matched with the semicircular hole is arranged in the semicircular hole.

2. A hot blast stove heat accumulating checker brick as claimed in claim 1, wherein said jacket of radiant material is pressed through a secondary cloth in said through holes of the checker brick body.

3. A hot blast stove heat accumulating checker brick as claimed in claim 1 or 2, wherein the jacket of radiant material has a thickness of 1 to 5 mm.

4. A hot blast stove heat accumulating checker brick as claimed in claim 3, wherein said jacket of radiant material has a thickness of 2-4 mm.

5. A hot blast stove heat storage checker brick processing system is characterized by comprising a primary press and a secondary press, wherein the primary press and the secondary press are respectively provided with a primary forming pressing die and a secondary forming pressing die; the primary press is used for forming a biscuit of the checker brick body; the secondary press is used for forming the biscuit of the heat storage checker brick.

6. The hot blast stove heat accumulating checker brick processing system of claim 5, further comprising a primary feeding device and a secondary feeding device for feeding the primary forming press mold and the secondary forming press mold, respectively.

7. The hot blast stove heat accumulating checker brick processing system of claim 5, further comprising a checker brick body biscuit transport device disposed between the primary press and the secondary press.