CN110160361B - Heat-insulating refractory brick - Google Patents
Heat-insulating refractory brick Download PDFInfo
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- CN110160361B CN110160361B CN201910403565.7A CN201910403565A CN110160361B CN 110160361 B CN110160361 B CN 110160361B CN 201910403565 A CN201910403565 A CN 201910403565A CN 110160361 B CN110160361 B CN 110160361B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention belongs to the technical field of refractory bricks, and particularly relates to a heat-insulating refractory brick; comprises a firebrick body; a group of heat collecting holes are formed in the vertical direction of the fire-facing surface of the refractory brick body, and the depth of each heat collecting hole is smaller than the length of the refractory brick body in the horizontal direction; a group of rotating rings are uniformly arranged in the heat collecting hole in the horizontal direction, and the diameter of each rotating ring is smaller than the inner diameter of the heat collecting hole; the rotating ring is rotatably connected with the inner wall of the heat collecting hole through a rotating shaft, and the heat collecting hole is used for enabling hot air on the windward side to enter the refractory brick body; according to the invention, the heat collecting hole is formed on the fire-facing surface of the refractory brick body, so that the heat at one end of the fire-facing surface can be guided into the whole refractory brick body, and the condition that the refractory brick body is fractured due to over-high local temperature of the refractory brick body is reduced.
Description
Technical Field
The invention belongs to the technical field of refractory bricks, and particularly relates to a heat-insulating refractory brick.
Background
The refractory brick is called fire brick for short, and is a refractory material fired by refractory clay or other refractory raw materials; the brick is light yellow or brown, is mainly used for building smelting furnaces, and can resist the high temperature of 1580-1770 ℃; also called fire bricks, refractory materials with certain shapes and sizes are divided into fired bricks, unfired bricks, fused cast bricks and refractory heat-insulating bricks according to the preparation process method; can be divided into standard bricks, common bricks, special shaped bricks and the like according to the shape and the size; it can be used as high-temp building material and structural material for building kiln and furnace and various thermal equipments, and can be used for bearing various physical and chemical changes and mechanical actions at high temp., such as refractory clay brick, high-aluminium brick, silica brick and magnesium brick, etc., and its refractory brick also can be made up by adopting splicing firing method.
When the fire-facing surface of the refractory brick is in contact with fire in the using process, the temperature of the fire-facing surface is increased too fast, so that the local temperature of the refractory brick is too high, the situation of local fracture of the refractory brick can be caused, and the situation of collapse of a wall body formed by stacking the refractory bricks is caused; and if the temperature of the whole firebrick is too high, the whole firebrick may break or explode and crack, causing the condition that personnel are injured, influencing the normal use of firebrick, so this problem needs to be solved.
Disclosure of Invention
In order to make up the defects of the prior art and solve the problem that the refractory brick is cracked or burst due to the fact that the local temperature of the refractory brick is too high or the overall temperature of the refractory brick is too high in the prior art, the invention provides the heat-insulating refractory brick.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a heat-insulating refractory brick, which comprises a refractory brick body; a group of heat collecting holes are formed in the vertical direction of the fire-facing surface of the refractory brick body, and the depth of each heat collecting hole is smaller than the length of the refractory brick body in the horizontal direction; a group of rotating rings are uniformly arranged in the heat collecting hole in the horizontal direction, and the diameter of each rotating ring is smaller than the inner diameter of the heat collecting hole; the rotating ring is rotatably connected with the inner wall of the heat collecting hole through a rotating shaft, and the heat collecting hole is used for enabling hot air on the windward side to enter the refractory brick body; when the firebrick is used, when the fire occurs on the windward side, the temperature of the air is increased to be hot air, and the hot air is rushed into the firebrick body along the heat collection hole to drive the rotating ring to rotate; the rotating ring accelerates the flow of hot air in the heat collecting hole when rotating, so that the heat in the hot air is fully attached to the whole refractory brick body, the whole temperature of the refractory brick body is smaller than the temperature difference value of the fire-facing surface of the refractory brick body, the temperature of the fire-facing surface can be reduced, the situation that the local temperature of the whole refractory brick body is too high to cause the refractory brick body to break or even explode to hurt people is avoided, and the purpose of fire resistance of the refractory brick body is achieved.
Preferably, a closed ring is arranged on one side, located on the windward side, of the heat collecting hole, the closed ring is used for closing the heat collecting hole, and a box body is arranged above the closed ring; a glass plate and a T-shaped push plate are respectively arranged in the box body, the glass plate is fixedly connected with the box body, the T-shaped push plate is connected with the box body in a sliding manner, one end, far away from the glass plate, of the T-shaped push plate extends out of the box body and is fixedly connected with the closed ring, and a groove for placing the closed ring is formed below the closed ring; elemental carbon is placed between the upper part of the glass plate and the box body, ferroferric oxide is placed between the T-shaped push plate and the glass plate as well as between the T-shaped push plate and the box body, and carbon dioxide generated by the elemental carbon and the ferroferric oxide in a high-temperature state pushes the closed ring to move towards the groove and then the heat collecting hole is opened; when the fire is not on the fire-facing surface, the heat collecting holes are sealed by the sealing rings, the normal ash feeding amount of the heat collecting holes is reduced, when the fire is on the fire-facing surface and the temperature is high, the glass plate is heated to crack, so that simple substance carbon and ferroferric oxide are mixed and react with each other to generate carbon dioxide, the generated carbon dioxide can push the T-shaped push plate to move downwards, the sealing rings are pushed into the grooves, the heat collecting holes are opened, and hot air can enter the heat collecting holes.
Preferably, an L-shaped pipe is arranged inside the T-shaped push plate, and the inner diameter of the L-shaped pipe is controlled to be 1-2 cm; an air outlet hole is formed above the heat collecting hole and is in contact with the T-shaped push plate; when the T type push pedal moves down, carbon dioxide in the L type pipe is discharged from the air outlet hole, when the T type push pedal moves down, the L type pipe is communicated with the air outlet hole when moving down along with the T type push pedal, carbon dioxide gas in the box can be discharged to the fire-facing surface through the L type pipe and the air outlet hole, a part of air can be isolated, the fire behavior of the fire-facing surface is reduced, the temperature of the fire-facing surface of the refractory brick body is indirectly reduced, and the condition that the refractory brick body is broken due to overhigh local temperature is reduced.
Preferably, a protective layer is arranged above the box body and surrounds the interior of the firebrick body; the protective layer is of a hollow structure and is made of polycrystalline alumina fibers; the heat collecting holes are communicated with the protective layer through a channel arranged in the refractory brick body, and hot air enters the heat collecting holes and then enters the protective layer through the channel; after the hot air is fed into the heat collecting holes, the hot air is fed into the protective layer in the hollow structure along the channel, so that the protective layer is supported, and even if the refractory brick body is cracked or exploded due to overhigh temperature, the cracked or exploded refractory brick body can be wrapped by the protective layer, thereby preventing the refractory brick body from being exploded and injuring people.
Preferably, the two sides of the rotating ring in the horizontal direction are wrapped with superfine fiber layers; the superfine fiber layer is used for absorbing dust entering from the heat collecting holes when the rotating ring rotates; when the rotating ring rotates, the superfine fiber layer can adsorb dust entering from the heat collecting holes, the situation that the heat collecting holes are blocked due to excessive dust entering the heat collecting holes is reduced, and hot air cannot enter the heat collecting holes to cause local overheating of the refractory brick body and fracture.
Preferably, protruding thorns are uniformly arranged on two sides of the rotating ring in the vertical direction and used for scraping the inner wall of the heat collecting hole; the rotary ring drives the protruding thorns to rotate when rotating, the protruding thorns contact with the inner wall of the heat collecting hole to scrape the inner wall of the heat collecting hole when rotating, so that the roughness of the inner wall of the heat collecting hole is increased, the quantity of adsorbed dust on the inner wall of the heat collecting hole is increased, the dust can be adsorbed on the inner wall of the heat collecting hole, the heat collecting hole cannot be blocked, the situation that the heat collecting hole is blocked due to too much dust entering the heat collecting hole is further reduced, and the heat collecting hole cannot enter hot air to cause the local overheating of a refractory brick body and break is formed.
When the fire is not on the fire-facing surface, the sealing ring seals the heat collecting hole to reduce the normal ash feeding amount of the heat collecting hole, when the fire temperature is high on the fire-facing surface, the glass plate is heated to crack, so that the simple substance carbon and the ferroferric oxide are mixed and react with each other to generate carbon dioxide, the generated carbon dioxide can push the T-shaped push plate to move downwards, the sealing ring is pushed into the groove, the heat collecting hole is opened, hot air can enter the heat collecting hole, the hot air is injected into the interior of the refractory brick body along the heat collecting hole to drive the rotating ring to rotate, the flow of the hot air in the heat collecting hole is accelerated when the rotating ring rotates, and the heat in the hot air is fully attached to the whole refractory brick body, so that the temperature difference of the whole refractory brick body relative to the fire-facing surface is small, and the cracking of the refractory brick body caused by the high local temperature of the, even people are hurt by explosion, thereby achieving the aim of fire resistance of the refractory brick body; when the rotating ring rotates, the superfine fiber layer can adsorb dust entering from the heat collecting hole, the situation that the heat collecting hole is blocked due to excessive dust entering from the heat collecting hole is reduced, and hot air cannot enter the heat collecting hole to cause local overheating of the refractory brick body and fracture; and the rotating ring drives the protruding thorns to rotate when rotating, the protruding thorns contact with the inner wall of the heat collecting hole to scrape the inner wall of the heat collecting hole when rotating, so that the roughness of the inner wall of the heat collecting hole is increased, the quantity of adsorbed dust on the inner wall of the heat collecting hole is increased, the dust can be adsorbed on the inner wall of the heat collecting hole, the heat collecting hole cannot be blocked, the situation that the heat collecting hole is blocked due to too much dust entering the heat collecting hole is further reduced, and hot air cannot enter the heat collecting hole to cause the local overheating of the refractory brick body to break. When the T-shaped push plate moves downwards, the L-shaped pipe is communicated with the air outlet hole when moving downwards along with the T-shaped push plate, carbon dioxide gas in the box body can be discharged to a fire-facing surface through the L-shaped pipe and the air outlet hole, part of air can be isolated, the fire behavior of the fire-facing surface is reduced, the temperature of the fire-facing surface of the refractory brick body is indirectly reduced, and the situation that the refractory brick body is cracked due to overhigh local temperature is reduced; after the hot air is fed into the heat collecting holes, the hot air is fed into the protective layer in the hollow structure along the channel, so that the protective layer is supported, and even if the refractory brick body is cracked or exploded due to overhigh temperature, the cracked or exploded refractory brick body can be wrapped by the protective layer, thereby preventing the refractory brick body from being exploded and injuring people.
The invention has the beneficial effects that:
1. according to the heat-insulating refractory brick, the heat collecting hole is formed in the fire-facing surface of the refractory brick body, so that heat at one end of the fire-facing surface can be conducted into the whole refractory brick body, and the situation that the refractory brick body is fractured due to overhigh local temperature of the refractory brick body is reduced.
2. According to the heat-insulating refractory brick, the hollow protective layer is arranged in the refractory brick body, hot air can enter the protective layer to support the refractory brick body, and when the refractory brick body is broken or cracked due to overhigh temperature, the protective layer can cover the broken or cracked refractory brick body, so that the condition that people are injured due to the breakage or the cracking is reduced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a perspective view of the rotating ring of the present invention;
FIG. 3 is a cross-sectional view of the refractory block body of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a partial enlarged view at B in FIG. 3;
in the figure: the refractory brick comprises a refractory brick body 1, a heat collecting hole 2, a rotating ring 3, a rotating shaft 31, a sealing ring 4, a box body 41, a glass plate 42, a T-shaped push plate 43, a groove 44, an L-shaped pipe 5, an air outlet hole 51, a protective layer 6, a channel 61, an ultrafine fiber layer 7 and a protruding spine 8.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 5, an insulating firebrick according to the present invention comprises a firebrick body 1; a group of heat collecting holes 2 are formed in the vertical direction of the fire-facing surface of the refractory brick body 1, and the depth of each heat collecting hole 2 is smaller than the length of the refractory brick body 1 in the horizontal direction; a group of rotating rings 3 are uniformly arranged in the heat collecting hole 2 in the horizontal direction, and the diameter of each rotating ring 3 is smaller than the inner diameter of the heat collecting hole 2; the rotating ring 3 is rotatably connected with the inner wall of the heat collecting hole 2 through a rotating shaft 31, and the heat collecting hole 2 is used for enabling hot air on the windward side to enter the firebrick body 1; when the firebrick is used, when the fire occurs on the windward side, the temperature of the air is increased to be hot air, and the hot air is rushed into the firebrick body 1 along the heat collection hole 2 to drive the rotating ring 3 to rotate; the rotating ring 3 accelerates the flow of hot air in the heat collecting hole 2 when rotating, so that the heat in the hot air is fully attached to the whole refractory brick body 1, the whole temperature of the refractory brick body 1 is smaller than the temperature difference value of the fire facing surface of the refractory brick body 1, the temperature of the fire facing surface can be reduced, the situation that the local temperature of the whole refractory brick body 1 is too high to cause the refractory brick body 1 to break or even explode and damage people is avoided, and the purpose of preventing the fire of the refractory brick body 1 is achieved.
As a specific embodiment of the present invention, a closed ring 4 is disposed on one side of the heat collecting hole 2 on the windward side, the closed ring 4 is used for closing the heat collecting hole 2, and a box 41 is disposed above the closed ring 4; a glass plate 42 and a T-shaped push plate 43 are respectively arranged in the box body 41, the glass plate 42 is fixedly connected with the box body 41, the T-shaped push plate 43 is connected with the box body 41 in a sliding manner, one end, far away from the glass plate 42, of the T-shaped push plate 43 extends out of the box body 41 and is fixedly connected with the closed ring 4, and a groove 44 for placing the closed ring 4 is formed below the closed ring 4; elemental carbon is placed between the upper part of the glass plate 42 and the box body 41, ferroferric oxide is placed between the T-shaped push plate 43 and the glass plate 42 and between the T-shaped push plate and the box body 41, and carbon dioxide generated by the elemental carbon and the ferroferric oxide in a high-temperature state pushes the closed ring 4 to move into the groove 44, so that the heat collecting hole 2 is opened; when the fire is not on the fire-facing surface, the heat collecting hole 2 is sealed by the sealing ring 4, the normal ash feeding amount of the heat collecting hole 2 is reduced, when the fire temperature on the fire-facing surface is high, the glass plate 42 is heated and cracked, so that the simple substance carbon and the ferroferric oxide are mixed and reacted with each other to generate carbon dioxide, the generated carbon dioxide can push the T-shaped push plate 43 to move downwards, the sealing ring 4 is pushed into the groove 44, the heat collecting hole 2 is opened, and hot air can enter the heat collecting hole 2.
As a specific embodiment of the present invention, an L-shaped pipe 5 is disposed inside the T-shaped push plate 43, and the inner diameter of the L-shaped pipe 5 is controlled to be 1-2 cm; an air outlet hole 51 is formed above the heat collecting hole 2, and the air outlet hole 51 is in contact with the T-shaped push plate 43; when the T-shaped push plate 43 moves downwards, carbon dioxide in the L-shaped pipe 5 is discharged from the air outlet hole 51, when the T-shaped push plate 43 moves downwards, the L-shaped pipe 5 is communicated with the air outlet hole 51 when moving downwards along with the T-shaped push plate 43, carbon dioxide gas in the box body 41 can be discharged to a fire-facing surface through the L-shaped pipe 5 and the air outlet hole 51, a part of air can be isolated, the fire behavior of the fire-facing surface is reduced, the temperature of the fire-facing surface of the refractory brick body 1 is indirectly reduced, and the situation that the refractory brick body 1 is cracked due to overhigh local temperature is reduced.
In one embodiment of the invention, a protective layer 6 is arranged above the box body 41, and the protective layer 6 is surrounded inside the firebrick body 1; the protective layer 6 is of a hollow structure, and the protective layer 6 is made of polycrystalline alumina fibers; the heat collecting hole 2 is communicated with the protective layer 6 through a channel 61 arranged in the refractory brick body 1, and hot air enters the heat collecting hole 2 and then enters the protective layer 6 through the channel 61; after hot air enters the heat collecting holes 2, the hot air enters the protective layer 6 in the hollow structure along the channel 61, so that the protective layer 6 is supported, and even if the refractory brick body 1 is cracked or exploded due to overhigh temperature, the protective layer 6 can also wrap the cracked or exploded refractory brick body 1, so that the situation that people are injured due to explosion of the cracked refractory brick body is prevented.
As a specific embodiment of the present invention, both sides of the rotating ring 3 in the horizontal direction are wrapped with superfine fiber layers 7; the ultra fine fiber layer 7 serves to absorb dust entering from the inside of the heat collecting hole 2 when the rotating ring 3 rotates; when the rotating ring 3 rotates, the microfiber layer 7 can adsorb dust entering from the heat collecting hole 2, thereby reducing the situation that the heat collecting hole 2 is blocked due to excessive dust entering from the heat collecting hole 2, and preventing hot air from entering into the heat collecting hole 2 to cause local overheating of the firebrick body 1 and rupture.
As a specific embodiment of the present invention, protruding thorns 8 are uniformly arranged on both sides of the rotating ring 3 in the vertical direction, and the protruding thorns 8 are used for scraping the inner wall of the heat collecting hole 2; the rotary ring 3 drives the bur 8 to rotate when rotating, and the bur 8 contacts with the inner wall of the heat collecting hole 2 to scrape the inner wall when rotating, thereby increasing the roughness of the inner wall of the heat collecting hole 2, increasing the amount of dust adsorbed on the inner wall of the heat collecting hole 2, enabling the dust to be adsorbed on the inner wall of the heat collecting hole 2 without blocking the heat collecting hole 2, further reducing the situation that the heat collecting hole 2 is blocked due to too much dust entering the heat collecting hole 2, and enabling the heat collecting hole 2 not to enter hot air to cause the local overheating of the firebrick body 1 and the rupture to occur.
When the refractory brick is used, when the fire is not on the fire-facing surface, the heat collecting hole 2 is sealed by the sealing ring 4, the normal ash feeding amount of the heat collecting hole 2 is reduced, when the fire is on the fire-facing surface and the temperature is high, the glass plate 42 is heated to crack, so that simple substance carbon and ferroferric oxide are mixed and reacted with each other to generate carbon dioxide, the generated carbon dioxide can push the T-shaped push plate 43 to move downwards, the sealing ring 4 is pushed into the groove 44, the heat collecting hole 2 is opened, hot air can enter the heat collecting hole 2, the hot air rushes into the interior of the refractory brick body 1 along the heat collecting hole 2 to drive the rotating ring 3 to rotate, the flowing of the hot air in the heat collecting hole 2 is accelerated when the rotating ring 3 rotates, the heat in the hot air is fully attached to the whole refractory brick body 1, therefore, the difference value of the whole temperature of the refractory brick body 1 relative to the fire-facing surface is small, the possibility of the rupture of the refractory brick body 1, even people are hurt by explosion, thereby achieving the purpose of fire resistance of the refractory brick body 1; when the rotating ring 3 rotates, the ultrafine fiber layer 7 can adsorb dust entering from the heat collecting hole 2, thereby reducing the situation that the heat collecting hole 2 is blocked due to excessive dust entering from the heat collecting hole 2, and leading the heat collecting hole 2 not to enter hot air to cause the local overheating of the firebrick body 1 and the rupture thereof; and the rotating ring 3 drives the bur 8 to rotate when rotating, and the bur 8 contacts with the inner wall of the heat collecting hole 2 to scrape the inner wall when rotating, thereby increasing the roughness of the inner wall of the heat collecting hole 2, increasing the amount of dust adsorbed on the inner wall of the heat collecting hole 2, enabling the dust to be adsorbed on the inner wall of the heat collecting hole 2 without blocking the heat collecting hole 2, further reducing the situation that the heat collecting hole 2 is blocked due to too much dust entering the heat collecting hole 2, and enabling the heat collecting hole 2 not to enter hot air to cause the local overheating of the firebrick body 1 and the rupture to occur. When the T-shaped push plate 43 moves downwards, the L-shaped pipe 5 is communicated with the air outlet 51 when moving downwards along with the T-shaped push plate 43, carbon dioxide gas in the box body 41 can be discharged to a fire-facing surface through the L-shaped pipe 5 and the air outlet 51, a part of air can be isolated, the fire intensity of the fire-facing surface is reduced, the temperature of the fire-facing surface of the refractory brick body 1 is indirectly reduced, and the situation that the refractory brick body 1 is cracked due to over-high local temperature is reduced; after hot air enters the heat collecting holes 2, the hot air enters the protective layer 6 in the hollow structure along the channel 61, so that the protective layer 6 is supported, and even if the refractory brick body 1 is cracked or exploded due to overhigh temperature, the protective layer 6 can also wrap the cracked or exploded refractory brick body 1, so that the situation that people are injured due to explosion of the cracked refractory brick body is prevented.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. An insulating refractory brick comprising a refractory brick body (1); the vertical direction of the fire-facing surface of the refractory brick body (1) is provided with a set of heat collecting holes (2), and the refractory brick is characterized in that: the depth of the heat collecting hole (2) is smaller than the length of the firebrick body (1) in the horizontal direction; a group of rotating rings (3) are uniformly arranged in the heat collecting hole (2) in the horizontal direction, and the diameter of each rotating ring (3) is smaller than the inner diameter of the heat collecting hole (2); the rotating ring (3) is rotatably connected with the inner wall of the heat collecting hole (2) through a rotating shaft (31), and the heat collecting hole (2) is used for enabling hot air on the windward side to enter the refractory brick body (1).
2. The insulating refractory brick of claim 1, wherein: a closed ring (4) is arranged on one side, located on the windward side, of the heat collecting hole (2), the closed ring (4) is used for closing the heat collecting hole (2), and a box body (41) is arranged above the closed ring (4); a glass plate (42) and a T-shaped push plate (43) are respectively arranged in the box body (41), the glass plate (42) is fixedly connected with the box body (41), the T-shaped push plate (43) is in sliding connection with the box body (41), one end, far away from the glass plate (42), of the T-shaped push plate (43) extends out of the box body (41) and is fixedly connected with the closed ring (4), and a groove (44) for placing the closed ring (4) is formed below the closed ring (4); elemental carbon is placed between the upper portion of the glass plate (42) and the box body (41), ferroferric oxide is placed between the T-shaped push plate (43) and the glass plate (42) and between the T-shaped push plate and the box body (41), and carbon dioxide generated by the elemental carbon and the ferroferric oxide in a high-temperature state pushes the closed ring (4) to move towards the groove (44) and then the heat collecting hole (2) is opened.
3. The insulating refractory brick of claim 2, wherein: an L-shaped pipe (5) is arranged inside the T-shaped push plate (43), and the inner diameter of the L-shaped pipe (5) is controlled to be 1-2 cm; an air outlet hole (51) is formed above the heat collecting hole (2), the air outlet hole (51) is in contact with the T-shaped push plate (43), and carbon dioxide in the L-shaped pipe (5) is discharged from the air outlet hole (51) when the T-shaped push plate (43) moves downwards.
4. The insulating refractory brick of claim 2, wherein: a protective layer (6) is arranged above the box body (41), and the protective layer (6) surrounds the interior of the refractory brick body (1); the protective layer (6) is of a hollow structure, and the protective layer (6) is made of polycrystalline alumina fibers; the heat collecting holes (2) are communicated with the protective layer (6) through passages (61) formed in the refractory brick body (1), and hot air enters the heat collecting holes (2) and then enters the protective layer (6) through the passages (61).
5. The insulating refractory brick of claim 1, wherein: the two sides of the rotating ring (3) in the horizontal direction are wrapped with superfine fiber layers (7); the microfiber layer (7) serves to absorb dust entering from the inside of the heat collecting hole (2) when the rotating ring (3) rotates.
6. The insulating refractory brick of claim 5, wherein: the two sides of the rotating ring (3) in the vertical direction are uniformly provided with the protruding thorns (8), and the protruding thorns (8) are used for scraping the inner wall of the heat collecting hole (2).
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| CN201910403565.7A CN110160361B (en) | 2019-05-15 | 2019-05-15 | Heat-insulating refractory brick |
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| CN201910403565.7A CN110160361B (en) | 2019-05-15 | 2019-05-15 | Heat-insulating refractory brick |
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| CN110160361B true CN110160361B (en) | 2020-04-07 |
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| CN111121463A (en) * | 2020-01-06 | 2020-05-08 | 东台市宏大耐热材料有限公司 | Strenghthened type is able to bear or endure firebrick convenient to joint |
| CN111649588A (en) * | 2020-05-19 | 2020-09-11 | 汤东阁 | Heat-insulating refractory brick |
| CN113199596B (en) * | 2021-04-16 | 2021-09-24 | 浙江宏丰炉料有限公司 | Anti-cracking magnesia carbon brick with good heat insulation effect and manufacturing process thereof |
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| CN208349842U (en) * | 2018-09-07 | 2019-01-08 | 无锡市亿洲耐火材料有限公司 | A kind of device for producing hydrogen insulating fire brick |
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