Auxiliary combustion device of roasting furnace

Abstract

The utility model discloses an auxiliary combustion device of a roasting furnace, and belongs to the technical field of roasting furnace heating. An auxiliary combustion device of a roasting furnace comprises a main body frame and a heat reflecting plate arranged outside the main body frame, a plurality of combustion nozzles and a plurality of heating rods are arranged on the main body frame, a gas conveying pipeline is arranged on the main body frame and connected with the combustion nozzles, an air blower is further arranged on the main body frame, and the heating rods are connected with the air blower. An air conveying pipeline is arranged between the air blower and the burner; fixing devices are arranged between the plurality of heating rods and the main body frame; according to the utility model, the heating uniformity of the whole combustion heat compensation can be effectively improved, the operation load of the heating rod can be reduced, so that the aging speed of the heating rod is reduced, the heating rod can be disassembled and assembled more conveniently, quickly and easily, the clamping firmness is ensured, and the protection pad not only can prevent the heating rod from being damaged during clamping, but also can prevent the heating rod from being damaged during clamping. And a certain damping effect can be achieved, and a good protection effect on the heating rod is achieved.

Description

Technical Field

[0001] This utility model relates to the field of roasting furnace heating technology, and in particular to an auxiliary combustion device for a roasting furnace. Background Technology

[0002] A calcining furnace is a thermal equipment used for high-temperature material processing, also known as a roasting furnace. It causes physicochemical changes in materials through high-temperature heating. Because it can significantly reduce sintering temperature and energy consumption, it greatly helps protect the environment, improve efficiency, and shorten processing time. Therefore, it is widely used in industries such as petrochemicals, inorganic chemicals, and metallurgy. An auxiliary heating device for a calcining furnace is a device that provides an additional heat source when the main heating system cannot independently meet process requirements. It is typically used for start-up, rapid heating, temperature compensation, or supplementary heating under special operating conditions.

[0003] Currently, auxiliary heating devices for roasting furnaces mainly use electric heating rods; however, this heating method still has the following problems:

[0004] 1. Uneven heating: During use, the heating rod may heat unevenly, resulting in some areas of the roasting furnace being too hot and others being too cold.

[0005] 2. Reduced heating efficiency: After prolonged use, the heating element of the heating rod may age, or scale and dust may accumulate on the surface of the heating rod, affecting heat transfer, resulting in reduced heating efficiency and increased energy consumption;

[0006] 3. Unstable temperature control: The temperature control system of some heating rods is not precise enough, which can easily lead to large temperature fluctuations and affect the quality of roasted products;

[0007] 4. Poor seismic resistance and inconvenient installation and maintenance: During the operation of the roasting furnace, a certain amount of vibration may occur. Some heating rods have an unreasonable structural design and poor seismic resistance, which can easily lead to damage or poor contact during vibration. Furthermore, when maintenance is required, the installation method is relatively complicated, requiring professional tools and technicians for installation. Moreover, when replacing or repairing, many parts need to be disassembled, which increases maintenance costs and workload. Utility Model Content

[0008] The purpose of this invention is to solve the problems of uneven heating, low efficiency, and inconvenience in maintenance of heating rods in the prior art, and to propose an auxiliary combustion device for a roasting furnace.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] An auxiliary combustion device for a roasting furnace includes a main frame and a heat reflector plate disposed outside the main frame. The main frame is provided with a plurality of burners and a plurality of heating rods, and a gas supply pipeline is provided on the main frame and connected to the plurality of burners. A blower is also provided on the main frame, and an air supply pipeline is provided between the blower and the burners. Each of the plurality of heating rods is provided with a fixing device between it and the main frame for installing and fixing the heating rods.

[0011] In some embodiments, the fixing device includes a first bracket and a second bracket. The first bracket is connected to the main frame, and a screw is provided between the first bracket and the second bracket. A semi-circular tube-shaped clamp is provided at a corresponding position on the first bracket and the second bracket for clamping and fixing the heating rod.

[0012] In some embodiments, the inner surfaces of both clamps are fixed with pads, and the outer surfaces of the pads are provided with anti-slip textures.

[0013] In some embodiments, the main frame is provided with a mounting beam, and an adjustment component is provided between the mounting beam and the first card holder for adjusting the position of the heating rod on the mounting beam.

[0014] In some embodiments, the adjusting assembly includes a sliding sleeve that is slidably connected to the mounting beam, and a nut is fixed to the outer surface of the sliding sleeve. A fixing bolt is connected to the nut, and one end of the fixing bolt is inserted into the sliding sleeve and contacts the mounting beam.

[0015] In some embodiments, the burner is horn-shaped, and a gas nozzle connected to a gas delivery pipeline is fixed on the burner. A gas mixing chamber is provided inside the burner, and the gas nozzle and the air delivery pipeline are both connected to the gas mixing chamber.

[0016] In some embodiments, the gas delivery pipeline includes a main gas delivery pipe and several secondary gas delivery pipes. The main gas delivery pipe is connected to an external gas source and is equipped with a valve and a pressure sensor. The secondary gas delivery pipes are respectively connected between the main gas delivery pipe and several gas nozzles, and each of the secondary gas delivery pipes is equipped with a flow controller.

[0017] In some embodiments, the air delivery pipeline includes a main air delivery pipe and a plurality of secondary air delivery pipes. The main air delivery pipe is connected to a blower, and the plurality of secondary air delivery pipes are respectively connected between the main air delivery pipe and the burner, and the secondary air delivery pipes are in communication with the gas mixing chamber.

[0018] In some embodiments, a shock-absorbing pad is provided between the blower and the main frame.

[0019] In some embodiments, the main frame is further provided with a control cabinet, which contains a controller. The controller is electrically connected to a pressure sensor and a flow controller, respectively, for monitoring and controlling the gas pressure and flow rate on the gas transmission pipeline.

[0020] Compared with the prior art, the present invention provides an auxiliary combustion device for a roasting furnace, which has the following beneficial effects.

[0021] 1. This utility model, through the cooperation of several heating rods and several burners, can achieve the purpose of uniform heat supplementation, effectively improving the uniformity of the entire combustion heating process and avoiding situations where some areas are too hot and others are too cold. At the same time, with the assistance of gas combustion, the operating load of the heating rods can be reduced, thereby slowing down their aging rate to a certain extent and ensuring heating efficiency. Furthermore, the combination of gas heating and heating rods makes the combustion heating process easier to control, avoiding large temperature fluctuations and ensuring the quality of the roasted products. Through the arrangement of heat reflectors, the heat generated by combustion can also be evenly reflected to all areas of the roasting furnace, avoiding situations where local temperatures are too high or too low, while also avoiding heat waste and improving energy utilization efficiency.

[0022] 2. This utility model, through the setting of the fixing device, not only makes the assembly and disassembly of the heating rod more convenient, quick and easy to operate, but also the clamping plate can increase the clamping area of ​​the heating rod, improve the clamping firmness, the protective pad can prevent damage to the heating rod when clamping, and also play a certain role in shock absorption, reducing the impact of external vibration on the heating rod, and providing a good protection effect for the heating rod. The outer surface of the protective pad has anti-slip texture, which can further improve the stability of clamping. By setting the adjustment component, the installation position of the heating rod can be adjusted, so that the position of the heating rod can be adapted to the actual needs, improving its flexibility and adaptability.

[0023] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0024] Figure 1 This is a frontal three-dimensional structural diagram of the heat reflector plate installed in this utility model.

[0025] Figure 2 This is a frontal three-dimensional structural diagram of the present invention without the heat reflector installed.

[0026] Figure 3 A three-dimensional structural diagram of the explosion of a fixed device.

[0027] Figure 4 This is a top-view sectional structural diagram of the fixed device.

[0028] Figure 5 This is a schematic diagram of the side cross-sectional structure of the burner nozzle.

[0029] In the picture:

[0030] 1. Main frame; 101. Crossbeam; 102. Column; 103. Longitudinal beam; 104. Mounting beam; 2. Main gas supply pipe; 3. Combustion nozzle; 301. Gas nozzle; 302. Gas mixing chamber; 4. Secondary gas supply pipe; 5. Main air supply pipe; 6. Secondary air supply pipe; 7. Blower; 8. Valve; 9. Pressure sensor; 10. Flow controller; 11. Heating rod; 12. Fixing device; 1201. First mounting bracket; 1202. Second mounting bracket; 1203. Screw; 1204. Clamping plate; 1205. Pad; 1206. Anti-slip texture; 13. Heat reflector; 14. Control cabinet; 16. Adjustment assembly; 1601. Sliding sleeve; 1602. Nut; 1603. Fixing bolt. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] Reference Figure 1 and 2 An auxiliary combustion device for a roasting furnace includes a main frame 1 and a heat reflector 13 disposed outside the main frame 1. The main frame 1 is provided with a plurality of burners 3 and a plurality of heating rods 11. The main frame 1 is provided with a gas supply pipeline connected to the plurality of burners 3. The main frame 1 is also provided with a blower 7. An air supply pipeline is provided between the blower 7 and the burners 3. During combustion, gas is supplied to the plurality of burners 3 through the gas supply pipeline. At the same time, the blower 7 also supplies air to the plurality of burners 3 through the air supply pipeline. The bottom of the burners 3 is connected to the interior of the roasting furnace. Therefore, the gas and air mixed in the burners 3 can be directly fed into the roasting furnace for combustion. A shock-absorbing pad is provided between the blower 7 and the main frame 1 to reduce the vibration of the main frame 1 caused by the operation of the blower 7.

[0033] The main frame 1 is a cuboid frame composed of several crossbeams 101, several columns 102, and several longitudinal beams 103. The crossbeams 101, columns 102, and longitudinal beams 103 are made of high-temperature resistant alloy steel and are connected to each other with high-strength bolts to ensure structural stability. This improves the structural stability and high-temperature resistance of the main frame 1, enabling it to withstand the high temperature and mechanical stress inside the roasting furnace and reduce the risk of deformation. The columns 102 are hollow and can be used to arrange wiring and related pipes, making the overall structure more compact.

[0034] A fixing device 12 is provided between each of the heating rods 11 and the main frame 1 for installing and fixing the heating rods 11;

[0035] Reference Figure 3 and 4 The fixing device 12 includes a first card holder 1201 and a second card holder 1202. The first card holder 1201 is connected to the main frame 1. A screw 1203 is provided between the first card holder 1201 and the second card holder 1202. Semi-circular tubular clamping plates 1204 are provided at corresponding positions on the first card holder 1201 and the second card holder 1202 for clamping and fixing the heating rod 11. The first card holder 1201 and the second card holder 1202 are made of high-temperature resistant ceramic material, and the screw 1203 is a high-temperature resistant anti-loosening screw, ensuring that the entire fixing device 12 still has stable fixing performance in high-temperature environment. The clamping plate 1204 can increase the clamping area of ​​the heating rod 11.

[0036] The inner surfaces of both clamping plates 1204 are fixed with pads 1205. The pads 1205 are made of high-temperature resistant and flexible aerogel composite material. The pads 1205 are placed between the clamping plates 1204 and the heating rod 11. This not only prevents damage to the heating rod 11 when clamping, but also provides a certain shock absorption effect.

[0037] The main frame 1 is provided with a mounting beam 104, and an adjustment component 16 is provided between the mounting beam 104 and the first card seat 1201 for adjusting the position of the heating rod 11 on the mounting beam 104.

[0038] Reference Figure 4 and 5 The adjusting component 16 includes a sliding sleeve 1601, which is slidably connected to the mounting beam 104. A nut 1602 is fixed on the outer surface of the sliding sleeve 1601, and a fixing bolt 1603 is connected to the nut 1602. One end of the fixing bolt 1603 is inserted into the sliding sleeve 1601 and contacts the mounting beam 104. The sliding sleeve 1601 is made of high-temperature resistant alloy steel, and the fixing bolt 1603 is a high-temperature resistant anti-loosening bolt.

[0039] The burner nozzle 3 is trumpet-shaped and made of high-temperature resistant alloy. The trumpet-shaped design is conducive to the mixing of gas and air, improving combustion efficiency. The high-temperature resistant alloy material ensures the stability and durability of the burner nozzle 3 in high-temperature environments. Several burner nozzles 3 are evenly distributed on the main frame 1, so that the heat generated by combustion can be transferred to the roasting furnace more evenly.

[0040] The burner 3 is fixed with a gas nozzle 301 connected to the gas supply pipeline, and the burner 3 has a gas mixing chamber 302 inside. The gas nozzle 301 and the air supply pipeline are both connected to the gas mixing chamber 302. The gas and air flowing into the burner 3 through the gas nozzle 301 and the air supply pipeline will mix in the gas mixing chamber 302 before entering the roasting furnace.

[0041] The gas transmission pipeline includes a main gas transmission pipe 2 and several secondary gas transmission pipes 4. The main gas transmission pipe 2 is connected to an external gas source, and valves 8 and pressure sensors 9 are respectively installed on the main gas transmission pipe 2. The several secondary gas transmission pipes 4 are respectively connected between the main gas transmission pipe 2 and several gas nozzles 301, and each of the several secondary gas transmission pipes 4 is equipped with a flow controller 10. Through the above reasonable pipeline arrangement, the gas can be evenly transmitted to each burner 3.

[0042] Pressure sensor 9 can monitor the pressure in the gas transmission pipeline in real time, and flow controller 10 can control the gas flow in the gas transmission pipeline to ensure the safety of gas transmission.

[0043] Both the main gas transmission pipe 2 and the secondary gas transmission pipe 4 are made of high-temperature resistant materials, and the outer surfaces of the main gas transmission pipe 2 and the secondary gas transmission pipe 4 are covered with fireproof and corrosion-resistant protective sleeves. While the pipes are tightly connected, high-performance sealing gaskets are used at the connection points to effectively prevent gas leakage and further ensure the safety of gas transmission operations.

[0044] The air delivery pipeline includes a main air delivery pipe 5 and several secondary air delivery pipes 6. The main air delivery pipe 5 is connected to a blower 7, and the secondary air delivery pipes 6 are respectively connected between the main air delivery pipe 5 and the burner 3, and the secondary air delivery pipes 6 are connected to the gas mixing chamber 302.

[0045] The main frame 1 is also equipped with a control cabinet 14, which contains a controller. The controller is electrically connected to the pressure sensor 9 and the flow controller 10, respectively, and is used to monitor and control the gas pressure and flow on the gas transmission pipeline.

[0046] In this invention, when heating is required, external gas is sequentially delivered to the gas mixing chamber 302 through the gas delivery main pipe 2, the gas delivery secondary pipe 4, and the gas nozzle 301. At the same time, the blower 7 delivers external air sequentially through the air delivery main pipe 5 and the air delivery secondary pipe 6 to the gas mixing chamber 302, where it mixes with the gas to form a combustible mixer. The air is then injected into the roasting furnace through the burner nozzle 3 and ignited inside the furnace. The heat generated by the combustion is transferred to the material inside the roasting furnace through radiation and convection to carry out the roasting process.

[0047] When the combustion temperature is insufficient, the heating rod 11 is activated. The heating rod 11 extends to the roasting furnace and supplements the furnace with heat through resistance heating. By evenly distributing several heating rods 11, uniform supplementary heating can be achieved. Combined with the gas heating from multiple burners 3, the uniformity of the entire combustion heating can be effectively improved, avoiding situations where some areas are too hot and others are too cold. At the same time, the auxiliary gas combustion can reduce the operating load of the heating rod 11, thereby reducing its aging rate to a certain extent and ensuring heating efficiency. Furthermore, the combination of gas heating and heating rod 11 makes the combustion heating operation easier to control, avoiding large temperature fluctuations and ensuring the quality of the roasted products.

[0048] Heat reflectors 13 are arranged around the main frame 1 to reflect the heat generated by combustion evenly to all areas of the roasting furnace. This avoids local overheating or underheating, prevents heat waste, and improves energy efficiency.

[0049] When the heating rod 11 needs to be disassembled, simply unscrew the screws 1203 from the first retainer 1201 and the second retainer 1202, and then separate the second retainer 1202 from the first retainer 1201 to remove the heating rod 11. For installation, clamp the clamps 1204 on the first retainer 1201 and the second retainer 1202 onto the outer sides of the heating rod 11, and then tighten the screws 1203 until the heating rod 11 is securely fixed. As can be seen, this installation method not only ensures the heating rod 11's... The assembly and disassembly are more convenient, quick and easy to operate. The clamping plate 1204 can increase the clamping area of ​​the heating rod 11 and improve the clamping firmness. The protective pad 1205 is placed between the clamping plate 1204 and the heating rod 11, which can not only prevent damage to the heating rod 11 when clamping, but also play a certain role in shock absorption, reducing the impact of external vibration on the heating rod 11 and providing a good protection for the heating rod 11. The outer surface of the protective pad 1205 is provided with anti-slip texture 1206, which further improves the stability of clamping.

[0050] Furthermore, after loosening the fixing bolt 1603 on the nut 1602, the fixing bolt 1603 will separate from the clamp 1204. Then, the position of the sliding sleeve 1601 can be adjusted along the length of the mounting beam 104, thereby adjusting the position of the fixing device 12. This achieves the purpose of adjusting the installation position of the heating rod 11, allowing the position of the heating rod 11 to be adjusted according to actual needs, thus improving its flexibility and adaptability.

[0051] In summary, the auxiliary combustion device for the roasting furnace, through its reasonable structural design, complete piping system, high-efficiency burner 3, and reliable heating rod 11, achieves stable, efficient, and safe operation of the roasting furnace, improves energy utilization efficiency, and reduces operating costs.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. An auxiliary combustion device for a roasting furnace, characterized in that, It includes a main frame (1) and a heat reflector (13) located outside the main frame (1). The main frame (1) is provided with several burners (3) and several heating rods (11). The main frame (1) is provided with a gas supply pipeline, which is connected to several burners (3). The main frame (1) is also provided with a blower (7). An air supply pipeline is provided between the blower (7) and the burners (3). A fixing device (12) is provided between several heating rods (11) and the main frame (1) for installing and fixing the heating rods (11).

2. The auxiliary combustion device for a roasting furnace according to claim 1, characterized in that, The fixing device (12) includes a first card holder (1201) and a second card holder (1202). The first card holder (1201) is connected to the main frame (1). A screw (1203) is provided between the first card holder (1201) and the second card holder (1202). A semi-circular tube-shaped clamp (1204) is provided at corresponding positions on the first card holder (1201) and the second card holder (1202) for clamping and fixing the heating rod (11).

3. The auxiliary combustion device for a roasting furnace according to claim 2, characterized in that, The inner surfaces of both clamps (1204) are fixed with pads (1205), and the outer surfaces of the pads (1205) are provided with anti-slip textures (1206).

4. The auxiliary combustion device for a roasting furnace according to claim 2, characterized in that, The main frame (1) is provided with an installation beam (104), and an adjustment component (16) is provided between the installation beam (104) and the first card seat (1201) for adjusting the position of the heating rod (11) on the installation beam (104).

5. The auxiliary combustion device for a roasting furnace according to claim 4, characterized in that, The adjustment assembly (16) includes a sliding sleeve (1601), which is slidably connected to the mounting beam (104). A nut (1602) is fixed on the outer surface of the sliding sleeve (1601), and a fixing bolt (1603) is connected to the nut (1602). One end of the fixing bolt (1603) is inserted into the sliding sleeve (1601) and contacts the mounting beam (104).

6. The auxiliary combustion device for a roasting furnace according to claim 1, characterized in that, The burner (3) is trumpet-shaped, and a gas nozzle (301) connected to the gas delivery pipeline is fixed on the burner (3). A gas mixing chamber (302) is opened inside the burner (3). The gas nozzle (301) and the air delivery pipeline are both connected to the gas mixing chamber (302).

7. The auxiliary combustion device for a roasting furnace according to claim 6, characterized in that, The gas transmission pipeline includes a main gas transmission pipe (2) and several secondary gas transmission pipes (4). The main gas transmission pipe (2) is connected to an external gas source, and a valve (8) and a pressure sensor (9) are respectively provided on the main gas transmission pipe (2). The several secondary gas transmission pipes (4) are respectively connected between the main gas transmission pipe (2) and several gas nozzles (301), and each of the several secondary gas transmission pipes (4) is provided with a flow controller (10).

8. The auxiliary combustion device for a roasting furnace according to claim 6, characterized in that, The air delivery pipeline includes an air delivery main pipe (5) and several air delivery secondary pipes (6). The air delivery main pipe (5) is connected to a blower (7). The several air delivery secondary pipes (6) are respectively connected between the air delivery main pipe (5) and the burner (3), and the air delivery secondary pipes (6) are connected to the gas mixing chamber (302).

9. The auxiliary combustion device for a roasting furnace according to claim 1, characterized in that, A shock-absorbing pad is provided between the blower (7) and the main frame (1).

10. The auxiliary combustion device for a roasting furnace according to claim 1, characterized in that, The main frame (1) is also equipped with a control cabinet (14), which contains a controller. The controller is electrically connected to the pressure sensor (9) and the flow controller (10) respectively, and is used to monitor and control the gas pressure and flow rate on the gas transmission pipeline.

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