A high temperature baking molding device for producing porous bricks

Abstract

The utility model belongs to building material production technical field especially for a kind of high-temperature baking forming device for producing perforated brick, including furnace body, conveying mechanism, temperature control system and mould assembly, furnace body is divided into preheating section, high-temperature baking section and cooling section along the direction of conveyance, each section is configured independent temperature control component;High-temperature baking section is equipped with angle-adjustable gas burner, mould adopts openwork heat conduction structure and cooperates automatic demoulding mechanism.The utility model, furnace body subsection design cooperates angle-adjustable burner, realizes the uniform heating of brick blank, improves finished product pass rate, and the flue gas waste heat is recycled, reduces energy consumption, energy saving and emission reduction, carborundum mould cooperates heat conduction hole and lubricating coating, improves heat conduction efficiency, prolongs service life, realizes the design of automatic temperature control and demoulding, production efficiency is high, and it is applicable to large-scale production.

Description

Technical Field

[0001] This utility model relates to the field of building material production technology, specifically a high-temperature baking and molding device for producing porous bricks. Background Technology

[0002] Porous bricks are widely used in construction projects due to their lightweight, excellent thermal insulation, and sound insulation properties. The high-temperature baking and molding process directly affects the brick's strength, porosity, and finished product yield. Existing porous brick baking devices suffer from the following problems: First, single-furnace heating leads to uneven temperature distribution, making the bricks prone to localized cracking or insufficient strength; second, the fixed heating angle cannot adapt to different brick sizes, resulting in high energy consumption; third, the molds have poor thermal conductivity, making demolding difficult and prone to deformation at high temperatures, increasing production costs; and fourth, the lack of coordinated design between the baking and cooling processes results in low production efficiency. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a high-temperature baking and molding device for producing porous bricks, which aims to achieve uniform heating, reduce energy consumption, and extend mold life, thus solving the problems of uneven temperature, high mold wear, and high energy consumption in porous brick baking devices.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A high-temperature baking and molding apparatus for producing porous bricks includes a furnace body and a conveying mechanism. The furnace body is provided with a preheating section, a high-temperature baking section and a cooling section in sequence along the conveying direction. Each section is equipped with an independent temperature sensor and a heating component.

[0008] At least four sets of gas burners are symmetrically distributed on both sides of the inner wall of the high-temperature baking section. The burners are fixedly connected to the angle adjustment device, and the angle between the flame jet direction and the conveying mechanism can be adjusted within the range of 30°-60°.

[0009] The conveying mechanism is equipped with a detachable porous brick mold. The bottom of the porous brick mold has an array of heat-conducting holes, and the inner wall is coated with a high-temperature resistant lubricating coating.

[0010] Furthermore, the PLC controller installed on the outside of the furnace body is electrically connected to the temperature sensor, which is an infrared thermometer. The PLC controller is connected to the heating components, the conveying mechanism, and the angle adjustment device to achieve precise control of temperature and conveying speed.

[0011] Furthermore, a flue gas recovery channel is provided at the top of the high-temperature baking section, and a heat exchanger is installed inside the flue gas recovery channel. The heat exchanger is connected to the heating components of the preheating section through pipes to realize the recovery and utilization of waste heat.

[0012] Furthermore, the porous brick mold is made of silicon carbide composite material, and an elastic support is provided at the bottom of the porous brick mold. The elastic support is correspondingly set with the lifting mechanism on the conveying mechanism to facilitate automatic demolding.

[0013] Furthermore, a cold air circulation system is installed on the cooling section, which includes a variable frequency fan and a temperature regulating valve. The inner wall of the cooling section cavity is equipped with an insulation layer to control the cooling rate and prevent the bricks from cracking.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a high-temperature baking and molding device for producing porous bricks, which has the following beneficial effects:

[0016] This utility model features a segmented furnace body design with an adjustable-angle burner, which enables uniform heating of brick blanks, improves the finished product qualification rate, recovers waste heat from flue gas, reduces energy consumption, saves energy and reduces emissions. The silicon carbide mold, combined with heat-conducting holes and a lubricating coating, improves heat conduction efficiency and extends service life. It also features automated temperature control and demolding design, resulting in high production efficiency and suitability for large-scale production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the porous brick mold in this utility model;

[0019] Figure 3 This is a block diagram illustrating the operating principle of this utility model.

[0020] In the diagram: 1. Furnace body; 101. Preheating section; 102. High-temperature baking section; 103. Cooling section; 2. Conveying mechanism; 3. PLC controller; 4. Heating components; 401. Gas burner; 402. Angle adjustment device; 5. Porous brick mold; 501. Heat conduction hole; 502. High-temperature resistant lubricating coating; 503. Elastic support component; 6. Cold air circulation system; 601. Variable frequency fan; 602. Temperature regulating valve; 7. Flue gas recovery channel; 701. Heat exchanger. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example

[0023] like Figure 1 , Figure 2 and Figure 3 As shown in one embodiment of the present invention: a high-temperature baking and molding device for producing porous bricks, comprising a furnace body 1 and a conveying mechanism 2. The furnace body 1 is provided with a preheating section 101, a high-temperature baking section 102 and a cooling section 103 arranged sequentially along the conveying direction. The length of the preheating section 101 is set to 4m, the length of the high-temperature baking section 102 is set to 6m, and the length of the cooling section 103 is set to 5m. The conveying mechanism 2 adopts a chain conveyor, and the speed can be adjusted within the range of 0.5-1m / min. Each section is equipped with an independent temperature sensor and a heating component 4.

[0024] At least four sets of gas burners 401 are symmetrically distributed on both sides of the inner wall of the high-temperature baking section 102. The burners 401 are fixedly connected to the angle adjustment device 402. The angle adjustment device 402 adopts an electric angle adjustment component and works with the PLC controller 3 to realize the flame direction adjustment. The angle between the flame jet direction and the conveying mechanism 2 can be adjusted within the range of 30°-60°.

[0025] The conveying mechanism 2 is equipped with a detachable porous brick mold 5. The bottom of the porous brick mold 5 is provided with an array of heat-conducting holes 501 with a diameter of 5mm. The inner side wall is provided with a high-temperature resistant lubricating coating 502 with a spray thickness of 0.1mm. The high-temperature resistant lubricating coating 502 is made of boron nitride high-temperature resistant lubricating coating.

[0026] The PLC controller 3 installed outside the furnace body 1 is electrically connected to the temperature sensor. The temperature sensor 3 is an infrared thermometer with a measurement accuracy of ±2℃. It feeds back data to the PLC controller 2 in real time to adjust the heating component 4. The PLC controller 3 is connected to the heating component 4, the conveying mechanism 2 and the angle adjustment device 402 respectively to achieve precise control of temperature and conveying speed.

[0027] Among them, the top of the high-temperature baking section 102 is equipped with a flue gas recovery channel 7 with an inner diameter of 300mm. The flue gas recovery channel 7 is equipped with a heat exchanger 701. The heat exchanger 701 adopts a copper tube fin structure with a heat exchange efficiency of ≥85%. The heat exchanger 701 is connected to the heating component 4 of the preheating section 101 through a pipe to realize the recovery and utilization of waste heat.

[0028] Among them, the porous brick mold 5 is made of silicon carbide composite material and has a size of 300×200×150mm. The specific size is adjusted according to the actual brick requirements. The bottom of the porous brick mold 5 is provided with an elastic support 503, which is correspondingly set with the lifting mechanism on the conveying mechanism 2 to facilitate automatic demolding.

[0029] The cooling section 103 is equipped with a cold air circulation system 6, which includes a variable frequency fan 601 and a temperature regulating valve 602. The variable frequency fan 601 has a power of 5.5kW and an air volume adjustment range of 1000-3000m³ / h. 3 The cooling rate can be controlled by temperature regulating valve 602. The inner wall of the cooling section 103 is equipped with a heat insulation layer with a thickness of 50mm, which can control the cooling rate to prevent brick cracking.

[0030] When in use, the brick blank is placed into the porous brick mold 5 and then sent into the preheating section 101 by the conveying mechanism 2. After being heated in the high-temperature baking section 101, it enters the cooling section 103. Finally, when the conveying mechanism 2 is removed from the furnace body 1, the demolding is completed by the lifting mechanism on the conveying mechanism 2. The entire process is automated temperature control and conveying adjustment by the PLC controller 3.

[0031] The specific steps are as follows:

[0032] S1. Place the brick blank with a water-cement ratio of 0.35 into the porous brick mold 5. The conveying mechanism 2 feeds the brick blank into the preheating section 101 at a speed of 0.8 m / min and preheats it at 180°C for 25 minutes to remove free water from the brick blank.

[0033] S2. The brick blank enters the high-temperature baking section 102, and the temperature is raised to 600℃ for the first 10 minutes, then raised to 1000℃ for the next 20 minutes and held for 5 minutes. The PLC controller 3 adjusts the angle of the burner 401 to 45° according to the brick blank specifications.

[0034] S3. After high-temperature treatment, the brick blanks enter the cooling section 103. The initial air inlet temperature of the cold air circulation system 6 is 30℃, and the air velocity is 1500m / s. 3 The temperature is reduced at a rate of 60℃ / hour, and the temperature of the brick at the outlet is controlled at 45℃.

[0035] S4. When the brick reaches the end of the conveying mechanism 2, the lifting mechanism rises and pushes the porous brick out of the porous brick mold 5 through the elastic support 503, thus completing the demolding.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-temperature baking and molding apparatus for producing porous bricks, comprising a furnace body (1) and a conveying mechanism (2) disposed within the furnace body (1), characterized in that: The furnace body (1) is provided with a preheating section (101), a high-temperature baking section (102) and a cooling section (103) in sequence along the conveying direction. Each section is equipped with an independent temperature sensor and a heating component (4). At least four sets of gas burners (401) are symmetrically distributed on both sides of the inner wall of the high-temperature baking section (102). The burners (401) are fixedly connected to the angle adjustment device (402), and the angle between the flame jet direction of the burner (401) and the conveying mechanism (2) can be adjusted within the range of 30°-60°. The conveying mechanism (2) is provided with a detachable porous brick mold (5). The bottom of the porous brick mold (5) is provided with an array of heat-conducting holes (501), and the inner wall of the porous brick mold (5) is provided with a high-temperature resistant lubricating coating (502).

2. The high-temperature baking and molding apparatus for producing porous bricks according to claim 1, characterized in that: The PLC controller (3) installed outside the furnace body (1) is electrically connected to the temperature controller. The PLC controller (3) is also connected to the heating component (4), the conveying mechanism (2), and the angle adjustment device (402) via signals.

3. The high-temperature baking and molding apparatus for producing porous bricks according to claim 1, characterized in that: The high-temperature baking section (102) is provided with a flue gas recovery channel (7) at the top, and a heat exchanger (701) is provided in the flue gas recovery channel (7). The heat exchanger (701) is connected to the heating component (4) in the preheating section (101) through a pipe.

4. The high-temperature baking and molding apparatus for producing porous bricks according to claim 1, characterized in that: The porous brick mold (5) is made of silicon carbide composite material. An elastic support (503) is provided at the bottom of the porous brick mold (5). The elastic support (503) is correspondingly provided with the lifting mechanism on the conveying mechanism (2).

5. The high-temperature baking and molding apparatus for producing porous bricks according to claim 1, characterized in that: The cooling section (103) is equipped with a cold air circulation system (6), which includes a variable frequency fan (601) and a temperature regulating valve (602), and the inner wall of the cooling section (103) is provided with a heat insulation layer.

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