CN212538794U - Brickkiln hearth structure - Google Patents

Abstract

The application relates to the technical field of refractory brick firing equipment, and particularly discloses a brick kiln hearth structure which comprises a kiln top and a side wall, wherein the side wall sequentially comprises a shell, a heat preservation layer and a refractory pouring layer from outside to inside, and a refractory fiber layer is embedded in the refractory pouring layer; the kiln top is arc-shaped, the semi-cylindrical fireproof cotton is fixed inside the kiln top, and fireproof paint is painted on the lower end face and the side face of the fireproof cotton. The aim at of this patent solves current brickkiln furnace and adopts resistant firebrick to build mostly, produces the crack easily between resistant firebrick, leads to furnace sealing performance poor, and the air gets into furnace from the crack in, destroys the problem of furnace atmosphere.

Description

Brickkiln hearth structure

Technical Field

The utility model relates to a fire resistant brick fires equipment technical field, in particular to brickkiln furnace structure.

Background

The brick kiln is a kiln for firing shale bricks. The common brick kiln is a fixed kiln, a kiln body is constructed on a fixed foundation, the whole kiln body is fixed, and a kiln car pushes finished bricks out of the kiln in the forward movement process. The fixed kiln comprises a tunnel kiln, a ring kiln and the like.

The brick kilns built in the earliest in China are vault-type kilns, because the pressure of the vault-type kilns to the kiln walls on two sides is the smallest, the structure is stable, and the construction is easiest. However, the vault kiln has larger kiln top space and overlarge height difference with the adobes, so that the temperature difference in the kiln is larger, and the product quality is poorer. Meanwhile, the vault kiln has larger kiln top space, and also can lead the ventilation quantity of the kiln top to be overlarge, and the heat in the kiln is taken away by the overlarge ventilation quantity, so that the heat loss is too fast. In order to ensure stable production temperature, the energy consumption of the vault kiln needs to be increased, so that the energy consumption cost of enterprises is greatly increased. Therefore, flat top kilns are used more and more frequently as construction techniques are enhanced. The flat-top kiln can overcome the defects of the arch-top kiln, but because the pressure of the kiln top to the kiln walls on the two sides is overlarge, in order to make up for the defects, the construction standard of the flat-top kiln is very high, and the investment cost of enterprises is very high.

In addition, the existing brick kiln hearth is mostly built by adopting refractory bricks, cracks are easily generated between the refractory bricks, the sealing performance of the hearth is poor, and air enters the hearth from the cracks to destroy the atmosphere in the hearth.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a technical problem provides a brickkiln furnace structure, solves the present brickkiln furnace and adopts resistant firebrick to build mostly, produces the crack easily between resistant firebrick, leads to furnace sealing performance poor, and the air is from the crack entering furnace in, destroys the problem of stove atmosphere.

In order to solve the above problem, the utility model discloses the technical scheme who adopts is: a brick kiln hearth structure comprises a kiln top and a side wall, wherein the side wall sequentially comprises a shell, a heat insulation layer and a fireproof pouring layer from outside to inside, and a fireproof fiber layer is embedded inside the fireproof pouring layer; the kiln top is arc-shaped, the semi-cylindrical fireproof cotton is fixed inside the kiln top, and fireproof paint is painted on the lower end face and the side face of the fireproof cotton.

The technical principle of the technical scheme is as follows:

1. the side wall of the hearth is integrally cast by adopting a refractory material, so that the sealing property of the hearth can be improved, and the anti-cracking performance of the refractory material can be enhanced by embedding a refractory fiber layer in the refractory casting layer;

2. the heat-insulating layer plays a role in heat insulation;

3. the fireproof cotton can plug the space of the kiln top, and large heat loss and high energy consumption caused by overlarge ventilation quantity inside the kiln top are avoided.

The beneficial effect that this scheme produced is: compared with the existing brick kiln hearth, the existing brick kiln hearth is mostly built by refractory bricks, cracks are easy to generate among the refractory bricks, so that the sealing performance of the hearth is poor, and air enters the hearth from the cracks to damage the atmosphere in the furnace; and the furnace lateral wall in this application scheme adopts refractory material monolithic pouring to form, can improve furnace's leakproofness, and the inside on layer is pour to fire-resistant is embedded to have a refractory fiber layer, can strengthen refractory material's anti cracking performance, and the fire prevention cotton can be with the space shutoff of kiln top, and the heat loss who avoids the inside air volume of kiln top too big to cause is big, the energy consumption is high.

Furthermore, a fireproof steel frame is arranged inside the fireproof cotton and fixed on the inner side wall of the kiln top.

The fireproof steel frame plays a supporting role for the fireproof cotton.

Furthermore, the fireproof steel frame is in a shape like a Chinese character feng, and the supporting effect on fireproof cotton is enhanced.

Further, the fireproof coating is a high-temperature fireproof coating.

Furthermore, the heat-insulating layer is made of glass wool.

Furthermore, the refractory fiber layer is made of recrystallized silicon carbide, the recrystallized silicon carbide can resist high temperature of more than 1700 ℃, the silicon carbide plate wall is ultrathin, the heat storage is less, and the energy-saving performance of the kiln can not be influenced; the silicon carbide plate still has very high strength at 1700 ℃, is not easy to break or bend, and can avoid pulverization, fracture and collapse of the hearth material after long-time use at high temperature, thereby greatly prolonging the service life of the kiln.

Drawings

Fig. 1 is an overall structural view.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the heat-insulating layer 1, the fireproof pouring layer 2, the fireproof fiber layer 3, the kiln top 4, the fireproof steel frame 5, the fireproof cotton 6 and the shell 7.

The embodiment is basically as shown in the attached figure 1:

a brick kiln hearth structure comprises a kiln top 4 and a side wall.

As shown in fig. 1, the brickkiln in this embodiment is an arched brickkiln, the side wall of the brickkiln sequentially includes a casing 7, a heat insulating layer 1 and a refractory pouring layer 2 from outside to inside, and a refractory fiber layer 3 is embedded inside the refractory pouring layer 2.

The shell 7 of the hearth side wall in the embodiment is of a reinforced concrete structure; the heat-insulating layer 1 in the embodiment is made of glass wool, and the heat-insulating layer 1 plays a role in heat insulation; the side wall of the hearth is integrally cast by adopting a refractory material, the sealing property of the hearth can be improved, the refractory fiber layer 3 is embedded in the refractory casting layer 2, and the anti-cracking property of the refractory material can be enhanced, the refractory casting layer 2 in the embodiment is cast by adopting a soil and high-alumina compact refractory castable, the refractory fiber layer 3 is made of recrystallized silicon carbide, the recrystallized silicon carbide can resist high temperature of more than 1700 ℃, and the silicon carbide plate wall is ultrathin, has less heat storage and cannot influence the energy-saving property of a kiln; the silicon carbide plate still has very high strength at 1700 ℃, is not easy to break or bend, and can also avoid pulverization, fracture and collapse of the hearth material after long-time use at high temperature, thereby greatly prolonging the service life of the kiln; the fireproof cotton 6 can plug the space of the kiln top 4, and the large heat loss and high energy consumption caused by the overlarge ventilation quantity in the kiln top 4 are avoided.

As shown in fig. 1, the kiln top 4 is arc-shaped, the semi-cylindrical fireproof cotton 6 is fixed inside the kiln top 4, the fireproof cotton 6 is internally provided with the fireproof steel frame 5, the fireproof steel frame 5 is shaped like a Chinese character feng, the fireproof steel frame 5 is embedded into the inner side wall of the kiln top 4, and the fireproof steel frame 5 supports the fireproof cotton 6. The lower end face and the side face of the fireproof cotton 6 are coated with fireproof paint (not shown in the figure), and the fireproof paint is high-temperature fireproof paint.

The furnace lateral wall in this embodiment adopts refractory material monolithic pouring to form, can improve furnace's leakproofness, and the fire-resistant layer 3 that has inlayed in the inside of pouring layer 2 has a fire-resistant fiber layer, can strengthen refractory material's anti-crack performance, and the fire prevention cotton 6 can be with the space shutoff of kiln top 4, and the calorific loss who avoids the inside air volume of kiln top 4 too big to cause is big, the energy consumption is high.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (6)

1. The utility model provides a brickkiln furnace structure, includes kiln top and lateral wall, its characterized in that: the side wall sequentially comprises a shell, a heat insulation layer and a fireproof pouring layer from outside to inside, and a fireproof fiber layer is embedded inside the fireproof pouring layer; the kiln top is arc-shaped, the semi-cylindrical fireproof cotton is fixed inside the kiln top, and fireproof paint is painted on the lower end face and the side face of the fireproof cotton.

2. The brickkiln hearth structure according to claim 1, wherein: the fireproof cotton is internally provided with a fireproof steel frame which is fixed on the inner side wall of the kiln top.

3. The brickkiln hearth structure according to claim 2, wherein: the fire-resistant steel frame is in a shape like a Chinese character feng.

4. The brickkiln hearth structure according to claim 1, wherein: the fireproof coating is a high-temperature fireproof coating.

5. The brickkiln hearth structure according to claim 1, wherein: the heat-insulating layer is made of glass wool.

6. The brickkiln hearth structure according to claim 1, wherein: the refractory fiber layer is made of recrystallized silicon carbide.

Images