CN105973007B - A kind of furnace equipment and the method using its making fired brick - Google Patents

Abstract

The invention provides a kiln equipment and a method for making sintered bricks. The kiln equipment includes a drying kiln, a tunnel kiln, an air passage and a centrifugal fan; the drying kiln and the tunnel kiln are connected through the air passage, and the centrifugal fan and the The air passages are connected and used to make the hot air in the tunnel kiln enter the drying kiln through the air passages. Because the centrifugal fan can extract the hot air in the tunnel kiln and send it into the drying kiln to dry the bricks, thereby greatly reducing the energy consumption in the brick making process. When using this equipment to make sintered bricks, the temperature of the tunnel kiln is heated to 700‑1000 °C, and the bricks are sent into the drying kiln, from the entrance of the drying kiln to the exit of the drying kiln, and then enter the tunnel kiln. When the entrance of the kiln reaches the exit of the tunnel kiln, sintered bricks are obtained. The method makes full use of the structural characteristics of the kiln equipment, only needs to heat the tunnel kiln, and does not need to heat the drying kiln, so that the energy consumption is low, simple and quick, and the obtained sintered brick has high strength.

Description

A kiln equipment and method for making sintered bricks using it

technical field

The invention relates to the field of brick-making equipment, in particular to a kiln equipment and a method for making sintered bricks using the same.

Background technique

Sintered brick is a building material widely used at present, especially in rural areas of our country. With the development of economy and the improvement of people's living standards, sintered brick has become the main building material.

In the existing firing process, the adobes are generally air-dried after being made, and then fired in a firing kiln using energy such as coal, which requires a large amount of energy and air-drying time. Moreover, the existing firing kilns have high energy consumption, low production efficiency, and serious waste of energy and raw materials.

In view of this, the present invention is proposed.

Contents of the invention

The first object of the present invention is to provide a kind of kiln equipment for making bricks. To solve the problem of high energy consumption of existing kiln equipment, in the kiln equipment provided by the present invention, a centrifugal fan is used to make the tunnel kiln burn The hot air generated in the process is extracted to the drying kiln to air dry the bricks, which greatly reduces the energy consumption in the brick making process.

The second object of the present invention is to provide a method for making sintered bricks by using the kiln equipment, which has low energy consumption, is simple and quick, and the obtained sintered bricks have high strength.

In order to realize the above-mentioned purpose of the present invention, special adopt following technical scheme:

A kiln equipment for making bricks, said equipment comprising a drying kiln, a tunnel kiln, an air duct and a centrifugal fan;

The drying kiln communicates with the tunnel kiln through the air passage, and the centrifugal fan is connected with the air passage, and is used to make the hot air in the tunnel kiln enter the drying kiln through the air passage.

In the kiln equipment provided by the present invention, the centrifugal fan can extract the hot air generated in the firing process of the tunnel kiln and send it into the drying kiln to dry the bricks, which greatly reduces the energy consumption in the brick making process quantity.

Considering that the water content of the bricks just entering the drying kiln is relatively high, resulting in high humidity in the kiln, which is not conducive to the drying of the bricks. In order to solve this problem, the kiln equipment provided by the present invention further includes an exhaust fan, and the air inlet of the exhaust fan communicates with the drying kiln. Through the continuous work of the exhaust fan, the moisture in the kiln is sucked away.

In order to prevent the bricks from containing sulfide, the moisture extracted by the exhaust fan is directly discharged into the environment to cause environmental pollution. The moisture extracted from the drying kiln can be sent to the desulfurization tower for desulfurization to reduce environmental pollution.

The included desulfurization tower mainly includes: tower body, fan, spray mechanism, waste water treatment pool, circulating water pool and circulating pump.

The tower body is set as a cylindrical open tower, with a disc-type water outlet pipe in the middle of the tower body, and a water spray hole under the water pipe. The water outlet pipe is connected to the circulating pump and sprays water downward; The treated gas is sent into the tower body through the fan, and the gas and water mist form convection, thereby realizing desulfurization; after the waste water is discharged, it enters the waste water treatment tank, and caustic soda is put in the waste water treatment tank for treatment. Under the action, it further enters the tower body.

In order to ensure the desulfurization effect, the disc outlet pipe is provided with multiple layers.

In order to ensure the stability of the disc-type water outlet pipe, a fixing frame is also provided to fixedly connect the disc-type water outlet pipe with the tower body.

The disc-type water outlet pipe is in the shape of a disc-type mosquito-repellent incense, with closed ends and rings.

In order for the gas to rush to the factory area, the top of the desulfurization tower is provided with an open edge, and the angle between it and the tower body is 30-45 degrees.

Preferably, the kiln equipment further includes a blower, and the air outlet end of the blower communicates with the tunnel kiln, and is used for blowing air into the tunnel kiln.

The set air blower sends air to the tunnel kiln tunnel to increase the concentration of oxygen in the tunnel kiln, thereby playing a combustion-supporting role.

In the present invention, the power of the blower is set according to the baking temperature of the tunnel kiln, and the temperature in the tunnel kiln can be adjusted by adjusting the power of the blower.

Preferably, a track is provided inside the drying kiln.

In the kiln equipment of the present invention, track iron is provided in the drying kiln. Put the adobes to be dried into the transport vehicle, and move along the track from the entrance of the drying kiln to the exit of the drying kiln at a set speed, and evenly dry the adobes on the transport vehicle. Through this setting, the bricks can be continuously transported to the drying kiln for drying, thereby greatly improving production efficiency.

Preferably, a burner is provided on the top of the tunnel kiln, and the burner penetrates the top of the tunnel kiln.

In the kiln equipment provided by the present invention, the burner has two functions, one is to open the burner to dissipate heat, so as to avoid the uneven internal structure of the finished brick caused by the high temperature during the baking process of the brick; When the temperature of the tunnel kiln is low, the temperature of the tunnel kiln is increased by adding coal to the burner. By setting the width of the lower part greater than the width of the upper part, the section of the burner is trapezoidal, which can avoid a large amount of heat loss, thereby reducing energy consumption.

In order to avoid a large amount of heat loss and reduce energy consumption, the width of the lower part of the burner is greater than that of the upper part, so that the cross section of the burner presents a trapezoidal shape. This "big belly and small mouth" design can effectively reduce the heat loss speed in the tunnel kiln.

In order to be able to adjust the temperature of the tunnel kiln in a timely manner and ensure that the temperature of the tunnel kiln is suitable for the baking of bricks, it is further preferred that in the tunnel kiln, a row of burners is set at an interval of 1.6-1.8m, and each row is arranged side by side. One, the upper width of the crater is 10-15cm.

Preferably, the wall of the drying kiln is a sandwich wall and a solid wall from top to bottom; an air outlet is provided on the inner wall of the sandwich wall, and the air inlet of the centrifugal fan communicates with the air passage, and the outlet The tuyere communicates with the inner space of the interlayer wall.

Through this design, the hot air extracted by the centrifugal fan from the tunnel kiln first enters the inner space of the interlayer wall, and then diffuses into the kiln tunnel of the drying kiln through the air outlet to achieve uniform heat distribution and avoid uneven drying of bricks. lead to cracks.

Further preferably, the tunnel kiln is sequentially divided into a preheating section, a high temperature section and a cooling section along the direction from the entrance to the exit, and the walls of the preheating section and the cooling section are hollow walls and solid walls from top to bottom, The hollow wall is provided with a tuyere, and the air passage communicated with the air inlet of the centrifugal fan is communicated with the inner space of the hollow wall; a thermocouple is arranged in the high temperature section, and the thermocouple is connected with a computer control system .

Through this setting, the hot air in the tunnel kiln can enter the inner space of the interlayer wall through the air outlet holes in the preheating section and the cooling section, and then be pumped to the drying kiln by the centrifugal fan through the air channel connected with the inner space of the interlayer wall In the tunnel kiln, since the heat loss in the tunnel kiln is mainly through the exit and entrance of the tunnel kiln, the design of the present invention realizes full utilization of the remaining heat in the tunnel kiln.

At the same time, because the wall in the high temperature section is a solid wall, the heat in the high temperature section is highly concentrated, and the bricks entering the tunnel kiln are fully calcined in this part, so that the properties of the bricks meet the requirements.

In order to control the temperature of the high-temperature section more accurately and avoid the deterioration of the appearance quality and properties of the finished bricks due to the high or low temperature during the baking process of the bricks, in the kiln equipment of the present invention, a The thermocouple is connected with the computer control system to monitor the baking temperature in the tunnel kiln in real time.

Preferably, the drying kiln includes a first drying kiln, a second drying kiln, a third drying kiln and a fourth drying kiln arranged side by side in sequence, the first drying kiln and the second drying kiln The interlayer walls of the drying kiln are connected, and the interlayer walls of the third drying kiln and the fourth drying kiln are connected; the tunnel kiln includes a first tunnel kiln and a second tunnel kiln arranged side by side; the centrifugal fan includes the first A centrifugal fan, a second centrifugal fan, a third centrifugal fan and a fourth centrifugal fan;

The air outlet ends of the first centrifugal fan and the second centrifugal fan communicate with the inner space of the interlayer wall of the first drying kiln and the second drying kiln, and the inlet of the first centrifugal fan The air end communicates with the inner space of the hollow wall of the preheating section of the second tunnel kiln, and the air inlet end of the second centrifugal fan communicates with the inner space of the hollow wall of the cooling section of the second tunnel kiln; the first The outlet ends of the three centrifugal fans and the fourth centrifugal fan are all connected to the inner space of the interlayer wall of the third drying kiln and the fourth drying kiln shown, and the air inlet end of the third centrifugal fan is connected to the inner space of the interlayer wall of the fourth drying kiln. The inner space of the hollow wall of the first tunnel kiln preheating section communicates with the inner space of the hollow wall of the first tunnel kiln cooling section, and the air inlet end of the fourth centrifugal fan communicates with the inner space of the hollow wall of the first tunnel kiln cooling section.

In order to improve production efficiency, the kiln equipment provided by the present invention includes four drying kilns and two tunnel kilns. Wherein, the first drying kiln is connected with the second drying kiln, and the third drying kiln is connected with the fourth drying kiln, so that the hot air extracted from the tunnel kiln can circulate in the two drying kilns. And the uniform distribution of heat in the two connected drying kilns can be realized by setting four centrifugal fans.

Preferably, a refractory brick layer is arranged on the top of the tunnel kiln, a perlite layer is arranged on the refractory brick layer, and a concrete prefabricated slab is laid on the perlite layer.

In the kiln equipment of the present invention, since the tunnel kiln is used at high temperature, especially the high temperature section of the tunnel wall, in order to ensure that the tunnel wall can meet the requirements of baking, in the kiln equipment of the present invention, the tunnel kiln A refractory brick layer is arranged on the top of the refractory brick layer, a perlite layer is arranged on the refractory brick layer, and a concrete prefabricated slab is laid on the perlite layer.

A method for making sintered bricks using the kiln equipment provided by the invention, comprising the following steps: heating the temperature of the tunnel kiln to 700-1000°C, sending the bricks into the drying kiln, and reaching the kiln from the entrance of the kiln The outlet of the drying kiln is then entered into the tunnel kiln, and from the entrance of the tunnel kiln to the outlet of the tunnel kiln, sintered bricks are obtained.

The method for making sintered bricks provided by the present invention makes full use of the structural characteristics of the kiln equipment, and only needs to heat the tunnel kiln instead of the drying kiln, which ensures that the method provided by the present invention has low energy consumption and is simple and quick , and the strength of the prepared sintered brick is high.

Preferably, when the tunnel kiln is sequentially divided into a preheating section, a high temperature section and a cooling section along the direction from the entrance to the exit, the walls of the preheating section and the cooling section are hollow walls and solid walls from top to bottom, The hollow wall is provided with a tuyere, and the air passage communicated with the air inlet of the centrifugal fan is communicated with the inner space of the hollow wall; a thermocouple is arranged in the high temperature section, and the thermocouple is connected with a computer control system , the high temperature section is equally divided into the first section, the second section, the third section and the fourth section along the direction from the entrance to the exit of the tunnel kiln, the temperature of the first section is 700-900°C, and the temperature of the second section is The temperature of the second stage is 920-970°C, the temperature of the third stage is 970-920°C, and the temperature of the fourth stage is 900-700°C.

The high-temperature section is the main structural area of brick sintering, and its temperature affects the internal structure of the brick during sintering, which in turn affects the strength of the finished brick. In the method provided by the present invention, the high-temperature section is divided into four sections along the direction from the entrance to the exit of the tunnel kiln, so that the temperature of the high-temperature section is arranged in an arc. By this method, the strength of the finished brick is guaranteed to be high.

Compared with prior art, the beneficial effect of the present invention is:

(1) In the kiln equipment provided by the present invention, the centrifugal fan arranged in the drying kiln can extract the hot air produced by the tunnel kiln in the firing process, send it into the drying kiln, and use the hot air extracted from the tunnel kiln to Air-drying the bricks in the drying kiln greatly reduces the energy consumption in the brick-making process.

(2) In the kiln equipment provided by the present invention, by setting an exhaust fan at the entrance of the drying kiln, and one end of the exhaust fan communicates with the kiln passage of the drying kiln, the moisture in the kiln passage is extracted, and there is Conducive to the drying of bricks.

(3) In the kiln equipment provided by the present invention, by arranging double-track rails at the bottom of the kiln tunnel of the drying kiln, the bricks can be continuously transported to the drying kiln tunnel for drying, thereby greatly improving production efficiency.

(4) In the kiln equipment provided by the present invention, the lower layer of the wall of the drying kiln is a solid wall, the upper layer is a sandwich wall, and the wall near the kiln road in the sandwich wall is provided with an air outlet, and the centrifugal The fan communicates with the inner space of the sandwich wall. Through this design, the hot air drawn by the centrifugal fan from the tunnel kiln first enters the inner space of the interlayer wall, and then diffuses into the kiln through the air outlet holes to achieve uniform heat distribution and avoid cracks caused by uneven drying of the bricks.

(5) In the kiln equipment provided by the present invention, in order to improve production efficiency, four drying kilns and two tunnel kilns are included in the equipment. Among them, the four drying kilns are divided into two groups, and the two drying kilns in each group are connected. In this way, the hot air extracted from the tunnel kiln can circulate in the two drying kilns. In order to realize the uniform distribution of heat in the two drying kilns, the positions of the centrifugal fans arranged in the two drying kilns are different in each group.

(6) In the kiln equipment provided by the present invention, by setting the blower in the tunnel kiln, and one end of the blower communicates with the tunnel kiln, and the other end communicates with the outside, air can be transported in the kiln passage of the tunnel kiln, and the oxygen in the kiln passage can be improved. concentration, thereby playing a role in supporting combustion.

(7) In the kiln equipment provided by the present invention, the top burner that runs through the tunnel kiln is set on the top of the tunnel kiln, and the lower width of the burner is greater than the upper width, which plays two roles: open the burner to dissipate heat when high temperature, avoid In the process of baking the adobe, the internal structure of the finished brick is uneven due to the high temperature; when the temperature is low, the temperature of the tunnel kiln is increased by adding coal to the crater. By setting the width of the lower part greater than the width of the upper part, the section of the burner is trapezoidal, which can avoid a large amount of heat loss, thereby reducing energy consumption.

(8) In the kiln equipment provided by the present invention, the tunnel kiln is divided into a preheating section, a high temperature section and a cooling section successively along the entrance direction, and the lower wall of the tunnel kiln in the preheating section and the cooling section is an entity The upper layer is a sandwich wall, and the wall close to the kiln in the sandwich wall is provided with an air outlet; the air duct connected with the centrifugal fan communicates with the inner space of the sandwich wall. Through this setting, the hot air in the tunnel kiln can enter the inner space of the interlayer wall through the air outlet holes in the preheating section and the cooling section, and then be pumped to the drying kiln by the centrifugal fan through the air channel connected with the inner space of the interlayer wall In the tunnel kiln, since the heat loss in the tunnel kiln is mainly through the exit and entrance of the tunnel kiln, the design of the present invention realizes full utilization of the remaining heat in the tunnel kiln. At the same time, because the wall in the high temperature section is a solid wall, the heat in the high temperature section is highly concentrated, and the bricks entering the tunnel kiln are fully calcined in this part, so that the properties of the bricks meet the requirements.

(9) In order to control the temperature of the high-temperature section more accurately, and avoid the deterioration of the appearance quality and properties of the finished bricks due to the high or low temperature during the baking process of the bricks, the kiln equipment of the present invention is placed on the top of the tunnel kiln in the high-temperature section. A thermocouple is provided, and the thermocouple is connected with the computer control system to monitor the baking temperature in the tunnel kiln in real time.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art.

Fig. 1 is the top view of four drying kilns arranged side by side;

Fig. 2 is the top view of two tunnel kilns arranged side by side;

Fig. 3 is the front view of four drying kilns arranged side by side;

Fig. 4 is a front view of two tunnel kilns arranged side by side.

Detailed ways

Embodiments of the present invention will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only for illustrating the present invention, and should not be considered as limiting the scope of the present invention. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that could be purchased from the market.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

As shown in Figures 1 to 2, the kiln equipment for making bricks provided by the present invention includes a drying kiln 101, a tunnel kiln 201, an air duct 301 and a centrifugal fan;

The drying kiln 101 communicates with the tunnel kiln 201 through the air passage 301, and the centrifugal fan is connected with the air passage 301, and is used to make the hot air in the tunnel kiln 201 enter through the air passage 301 The drying kiln 101.

Considering that the water content of the bricks just entering the drying kiln is relatively high, resulting in high humidity in the kiln, which is not conducive to the drying of the bricks. In order to solve this problem, further, the kiln equipment provided by the present invention further includes an exhaust fan 401 , and the air inlet of the exhaust fan 401 communicates with the drying kiln 101 . The moisture in the kiln is drawn away by the continuous operation of the exhaust fan 401 .

Preferably, there are eight exhaust fans 401, two exhaust fans 401 are installed near the inlet of each drying kiln 101, and all eight exhaust fans 401 are connected to the desulfurization tower.

Further, the kiln equipment provided by the present invention further includes a blower 501 , the air outlet of the blower 501 communicates with the tunnel kiln 201 and is used to blow air into the tunnel kiln 201 . The set blower sends air to the kiln tunnel of the tunnel kiln 201 to increase the concentration of oxygen in the kiln tunnel, thereby playing a combustion-supporting role.

Further, in the kiln equipment provided by the present invention, a track 114 is arranged in the drying kiln.

In the kiln equipment of the present invention, a rail 114 is provided in the drying kiln. Put the adobes to be dried into the transport vehicle, and move along the track 114 from the entrance of the drying kiln to the exit of the drying kiln at a set speed, and evenly dry the adobes on the transport vehicle. Through this setting, the bricks can be continuously transported to the drying kiln for drying, thereby greatly improving production efficiency.

Further, the top of the tunnel kiln 201 is provided with a burner, and the burner penetrates the top of the tunnel kiln.

In the kiln equipment provided by the present invention, the burner has two functions, one is to open the burner to dissipate heat, so as to avoid the uneven internal structure of the finished brick caused by the high temperature during the baking process of the brick; When the temperature of the tunnel kiln is low, the temperature of the tunnel kiln is increased by adding coal to the burner. By setting the width of the lower part greater than the width of the upper part, the section of the burner is trapezoidal, which can avoid a large amount of heat loss, thereby reducing energy consumption.

In order to avoid a large amount of heat loss and reduce energy consumption, the width of the lower part of the burner is greater than that of the upper part, so that the cross section of the burner presents a trapezoidal shape. This "big belly and small mouth" design can effectively reduce the heat loss speed in the tunnel kiln.

In order to be able to adjust the temperature of the tunnel kiln in a timely manner and ensure that the temperature of the tunnel kiln is suitable for the baking of bricks, it is further preferred that in the tunnel kiln, a row of burners is set at an interval of 1.6-1.8m, and each row is arranged side by side. One, the upper width of the crater is 10-15cm.

As shown in Figure 3, further, the wall of the drying kiln 101 is a sandwich wall 111 and a solid wall 112 from top to bottom; the inner wall of the sandwich wall 111 is provided with an air outlet 113, and the centrifugal fan The air inlet is communicated with the ventilation channel 301, and the air outlet is communicated with the inner space of the sandwich wall.

Through this design, the hot air extracted from the tunnel kiln 201 by the centrifugal fans 601-604 first enters the inner space of the interlayer wall 111, and then diffuses into the kiln tunnel of the drying kiln 101 through the air outlet 113, so as to achieve uniform heat distribution and avoid Cracks appear due to uneven drying of the adobe.

As shown in Figure 2, further, the tunnel kiln 201 is divided into a preheating section 211, a high temperature section 212, and a cooling section 213 along the direction from the entrance to the exit, and the walls of the preheating section 211 and the cooling section 213 are From top to bottom are a hollow wall 214 and a solid wall 215, the hollow wall 214 is provided with an air outlet 216, and the air passage communicated with the air inlet of the centrifugal fan communicates with the inner space of the hollow wall 214, and the tunnel The bottom of the kiln 201 is also provided with a tunnel kiln track 210 (see FIG. 4 ); a thermocouple is provided in the high temperature section 212, and the thermocouple is connected with a computer control system.

In addition, partitions 223 are arranged between the walls between the high temperature section 212 and the preheating section 211, the high temperature section 212 and the cooling section 213, and there is no partition 223 in the wall at the high temperature section 212. Air ducts and vents.

Through this setting, the hot air in the tunnel kiln 201 can enter the inner space of the interlayer wall 111 through the tuyere 216 in the preheating section 211 and the cooling section 213, and then pass through the air channel connected with the inner space of the interlayer wall 111 by the centrifugal fan 601 ~604 (Fig. 1) is pumped into the drying kiln 101, because the loss of heat in the tunnel kiln 201 is mainly through the outlet and the entrance of the tunnel kiln 201, and by the design of the present invention, the residual heat in the tunnel kiln 201 has been realized full use of.

At the same time, because the wall body of the high temperature section 212 is a solid wall, the heat of the high temperature section 212 is highly concentrated, and the bricks entering the tunnel kiln 201 are fully calcined in this part, so that the properties of the bricks meet the requirements.

In order to control the temperature of the high-temperature section 212 more precisely, and to avoid the deterioration of the appearance quality and properties of the finished bricks due to the high or low temperature during the baking process of the bricks, the tunnel kiln top of the high-temperature section 212 is installed in the kiln equipment of the present invention. There are thermocouples, and the thermocouples are connected with the computer control system to monitor the baking temperature in the tunnel kiln in real time.

As shown in Figure 1, further, the drying kiln 101 includes a first drying kiln 121, a second drying kiln 122, a third drying kiln 123 and a fourth drying kiln 124 arranged side by side in sequence, the The interlayer walls of the first drying kiln 121 and the second drying kiln 122 are connected, and the interlayer walls of the third drying kiln 123 and the fourth drying kiln 124 are connected; The first tunnel kiln 221 and the second tunnel kiln 222; the centrifugal fans include a first centrifugal fan 601, a second centrifugal fan 602, a third centrifugal fan 603 and a fourth centrifugal fan 604;

The air outlet end of the first centrifugal fan 601 and the air outlet end of the second centrifugal fan 602 are both connected to the inner space of the interlayer wall of the first drying kiln 121 and the second drying kiln 122, The air inlet end of the first centrifugal fan 601 communicates with the inner space of the hollow wall of the second tunnel kiln 222 preheating section, and the air inlet end of the second centrifugal fan 602 is cooled with the second tunnel kiln 222 The interior space of the hollow wall of section is communicated; The inner space of the interlayer wall of 124 communicates, the air inlet end of the third centrifugal fan 603 communicates with the inner space of the hollow wall of the preheating section 221 of the first tunnel kiln 221, and the air inlet of the fourth centrifugal fan 604 The end communicates with the inner space of the hollow wall of the first tunnel kiln cooling section 213.

In order to improve production efficiency, the kiln equipment provided by the present invention includes four drying kilns 101 and two tunnel kilns 201 . Wherein, the first drying kiln 121 is connected with the second drying kiln 122, and the third drying kiln 123 is connected with the fourth drying kiln 124. to circulate. And the uniform distribution of heat in the two connected drying kilns can be realized by setting four centrifugal fans.

Further, a refractory brick layer 217 is arranged on the top of the tunnel kiln 201, a perlite layer 218 is arranged on the refractory brick layer 217, and a concrete prefabricated slab 219 is laid on the perlite layer 218.

In the kiln equipment of the present invention, since the tunnel kiln 201 is used at high temperature, especially the high temperature section of the tunnel wall, in order to ensure that the tunnel wall can meet the requirements of baking, in the kiln equipment of the present invention, the tunnel The top of the kiln 201 is provided with a refractory brick layer 217, and above the refractory brick layer 217 is provided a perlite layer 218, and above the perlite layer 218, a concrete prefabricated slab 219 is laid (see FIG. 4 ).

Based on the same consideration, the wall near the kiln in the tunnel kiln 201 is a refractory brick layer.

Both sides of the wall of the tunnel kiln 201 are also provided with reinforcement columns, and the columns on both sides are connected by connecting cross bars to prevent deformation of the tunnel kiln after firing.

The method for making sintered bricks with kiln equipment provided by the present invention includes the following steps: heating the temperature of the tunnel kiln 201 to 700-1000°C, sending the bricks into the drying kiln 101, and passing from the entrance of the drying kiln 101 to the The outlet of the drying kiln 101 is then entered into the tunnel kiln 201, and from the entrance of the tunnel kiln 201 to the outlet of the tunnel kiln 201, sintered bricks are obtained.

The above method makes full use of the structural characteristics of the kiln equipment, only needs to heat the tunnel kiln 201, and does not need to heat the drying kiln 101, which ensures that the method provided by the present invention is low in energy consumption, simple and quick, and the obtained Sintered bricks have high strength.

Further, when the tunnel kiln 201 is sequentially divided into a preheating section 211, a high temperature section 212 and a cooling section 213 along the direction from the entrance to the exit, the walls of the preheating section 211 and the cooling section 213 are as follows from top to bottom: Hollow wall 214 and solid wall 215, described hollow wall 214 is provided with tuyere 216, and the air channel that communicates with the air inlet of described centrifugal blower communicates with the inner space of described hollow wall 214 (seeing Fig. 4); Section 212 is provided with thermocouples, and when the thermocouples are connected to the computer control system, the high temperature section 212 is equally divided into the first section, the second section, the third section and the second section along the direction from the entrance to the exit of the tunnel kiln 201. Four sections, the temperature of the first section is 700-900°C, the temperature of the second section is 920-970°C, the temperature of the third section is 970-920°C, and the temperature of the fourth section is 900-700°C.

The high-temperature section 212 is the main structural area of brick sintering, and its temperature affects the internal structure of the brick during sintering, which in turn affects the strength of the finished brick. In the method provided by the present invention, the high-temperature section 212 is equally divided into four sections along the direction from the entrance to the exit of the tunnel kiln, so that the temperature of the high-temperature section is arranged in an arc. By this method, the strength of the finished brick is guaranteed to be high.

While particular embodiments of the invention have been illustrated and described, it should be appreciated that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims (7)

1. a kind of furnace equipment, which is characterized in that the equipment includes drying kiln, tunnel oven, ventilating duct and centrifugal blower；

The drying kiln is connected to the tunnel oven by the ventilating duct, and the centrifugal blower is connected with the ventilating duct, and Enter the drying kiln for making the hot wind in the tunnel oven pass through the ventilating duct；

The top of the tunnel oven is equipped with burner, and the burner penetrates the top of the tunnel oven；The lower width of the burner More than upper width so that burner section presents trapezoidal；In tunnel oven, one row's burner is set at interval of 1.6-1.8m, is often arranged 4-5 are set side by side, and the upper width of burner is 10-15cm；

The wall of the drying kiln is sandwich wall and solid wall from top to bottom；It is provided with outlet air on the madial wall of the sandwich wall Mouthful；The air intake of the centrifugal blower is connected to the ventilating duct, and outlet air end is connected to the inner space of the sandwich wall；

The tunnel oven is divided into preheating section, high temperature section and cooling section along entrance to export direction, the preheating section and described The wall of cooling section is cavity wall and solid wall from top to bottom, air port is provided on the cavity wall, with the centrifugal blower The ventilating duct of air inlet connection is connected to the inner space of the cavity wall；Thermocouple, the thermoelectricity are equipped in the high temperature section It is even to be connect with computer control system.

2. furnace equipment according to claim 1, which is characterized in that the furnace equipment further includes exhaust fan, the pumping The air inlet of wind turbine is connected to the drying kiln.

3. furnace equipment according to claim 1, which is characterized in that the furnace equipment further includes pressure fan, described to send The outlet air end of wind turbine is connected to the tunnel oven, and for blowing in the tunnel oven.

4. furnace equipment according to claim 1, which is characterized in that be provided with track in the drying kiln.

5. furnace equipment according to claim 1, which is characterized in that the drying kiln includes the setting that is connected side by side successively First drying kiln, the second drying kiln, third drying kiln and the 4th drying kiln, first drying kiln and second drying kiln Sandwich wall communicates, and the sandwich wall of the third drying kiln and the 4th drying kiln communicates；The tunnel oven includes the setting that is connected side by side The first tunnel oven and the second tunnel oven；The centrifugal blower includes the first centrifugal blower, the second centrifugal blower, third centrifugation wind Machine and the 4th centrifugal blower；

The outlet air end of first centrifugal blower and second centrifugal blower is dried with first drying kiln and described second The inner space of the sandwich wall of dry kiln is connected to, the sky of the air intake of first centrifugal blower and the second tunnel oven preheating section The inner space of core-wall is connected to, and the air intake of second centrifugal blower is interior with the cavity wall of the second tunnel oven cooling section Portion space is connected to；The outlet air end of the third centrifugal blower and the 4th centrifugal blower with the third drying kiln and described The inner space of the sandwich wall of 4th drying kiln is connected to, and the air intake of the third centrifugal blower is preheated with first tunnel oven The inner space connection of the cavity wall of section, the air intake of the 4th centrifugal blower are hollow with the first tunnel oven cooling section The inner space of wall is connected to.

6. a kind of method making fired brick using any one of the claim 1-5 furnace equipments, which is characterized in that including such as Lower step：The temperature of tunnel oven is heated to 700-1000 DEG C, adobe is sent into drying kiln, is reached from the drying kiln entrance The outlet of the drying kiln, afterwards enter the tunnel oven in, from the tunnel oven entrance reach the outlet of the tunnel oven to get Fired brick.

7. according to the method described in claim 6, it is characterized in that, when the tunnel oven is divided into along entrance to export direction The wall of preheating section, high temperature section and cooling section, the preheating section and the cooling section is cavity wall and solid wall, institute from top to bottom It states and is provided with air port on cavity wall, the inner space of the ventilating duct being connected to the air inlet of the centrifugal blower and the cavity wall Connection；Thermocouple is equipped in the high temperature section, when the thermocouple is connect with computer control system, the high temperature section is described in Tunnel oven entrance to export direction is divided into first segment, second segment, third section and the 4th section, and the temperature of the first segment is 700- 900 DEG C, the temperature of the second segment is 920-970 DEG C, and the temperature of the third section is 970-920 DEG C, the 4th section of the temperature Degree is 900-700 DEG C.