A heating mechanism of a heating furnace
Patent Information
- Application Number
- CN202521903386.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-09-04
AI Technical Summary
[0002]传统的加热炉的有效内宽一般为2.3米、2.5米，（主要针对传统料片或者单门环料片），对于双门环或横向出料的单门环不足以支持生产，为配合双门环的生产，则需要对传统的加热炉进行重新进行设计优化，而适用于传统加热炉的加热机构，也需要同步进行设计；若采取更换尺寸更长的辐射管以增大加热覆盖面积，则存在更换成本高、停工时间长、经济效益低的缺点
通过优化上热区辐射管的布局，使其相互交错布置，确保加热机构可适配有效宽度增加的加热炉，以满足改进后的加热炉可对工件实现较好的热处理工序，避免了更换高成本的辐射管以及需要长时间停机而影响正常的生产进行，相对降低加热炉的生产成本（以及加热炉中的加热机构的生产成本与更换成本），保证生产的有序进行；另外，通过设置相关温度传感器，对存在异常情况的加热区域进行监测/警报，及时提醒操作者，以作出调整或停机检修的操作，从而维持生产的有序进行，保证工件的热处理效果。
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Figure CN224872842U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of heating furnaces, and in particular to a heating mechanism for a heating furnace. Background Technology
[0002] Traditional heating furnaces typically have an effective internal width of 2.3 meters or 2.5 meters (mainly for traditional sheet metal or single-door ring sheet metal). This is insufficient for production with double-door rings or single-door rings with transverse discharge. To accommodate production with double-door rings, the traditional heating furnace needs to be redesigned and optimized. The heating mechanism suitable for the traditional heating furnace also needs to be designed simultaneously. If longer radiant tubes are used to increase the heating coverage area, there are disadvantages such as high replacement costs, long downtime, and low economic efficiency.
[0003] Therefore, based on the above-mentioned technical problems, this application proposes a heating mechanism for a heating furnace that has high production efficiency, low production cost, and good heat treatment effect. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a heating mechanism for a heating furnace with high production efficiency, low production cost and good heat treatment effect.
[0005] To achieve the above objectives, this utility model provides a heating mechanism for a heating furnace, comprising a furnace body, a transmission mechanism, and a conveying device and a heating mechanism disposed within the furnace body. The transmission mechanism is located on the transmission side of the furnace body and is connected to the conveying device. The heating mechanism includes three primary radiant tubes, two secondary radiant tubes, and five heating units. The furnace body is divided into an upper heating zone and a lower heating zone by the location of the conveying device. Two of the primary radiant tubes are embedded from the driven side of the furnace body into the upper heating zone, and the other primary radiant tube is embedded from the transmission side of the furnace body into the upper heating zone. The primary radiant tubes in the upper heating zone intersect with each other. The heating units are staggered, with a primary interval between adjacent primary radiant tubes; the secondary radiant tubes extend longitudinally through the lower heating zone, with a secondary interval between adjacent secondary radiant tubes; one heating unit is located on the furnace body drive side and connected to the primary radiant tube on the furnace body drive side; the other four heating units are located on the furnace body driven side and connected to the primary and secondary radiant tubes on the furnace body driven side, respectively; the primary radiant tubes are used to heat the workpieces on the conveying device from above, the secondary radiant tubes are used to heat the workpieces on the conveying device from below, and the heating units are used to provide heat sources to the primary and secondary radiant tubes, respectively.
[0006] Furthermore, the primary radiant tube is preferably made of silicon carbide, and the secondary radiant tube is preferably made of high-temperature resistant stainless steel.
[0007] Furthermore, the power of each heating unit is preferably 50 KW.
[0008] Furthermore, the heating mechanism also includes three main combustion air pipes, three main gas pipes, and two main exhaust pipes. The main combustion air pipes are respectively located above and below the driven side of the furnace body and above the driving side of the furnace body, and have bypassed branch pipes connecting to the combustion air inlet of each heating unit. The main gas pipes are respectively located above and below the driven side of the furnace body and above the driving side of the furnace body, and have bypassed branch pipes connecting to the gas inlet of each heating unit. The main exhaust pipes are respectively located above the driving and driven sides of the furnace body, and have bypassed branch pipes connecting to the exhaust of each heating unit. The main combustion air pipes supply combustion air to the heating units through the main combustion air branch pipes, the main gas pipes supply gas to the heating units through the main gas branch pipes, and the main exhaust pipes collect the exhaust gas output by the heating units through the exhaust branch pipes and transport the exhaust gas to relevant exhaust gas treatment equipment.
[0009] Furthermore, the heating mechanism also includes at least one temperature sensor, which is disposed on the furnace body and is used to detect the temperature inside the furnace body.
[0010] Furthermore, each of the heating units is equipped with a controller, which is used to control the operating status of the heating unit.
[0011] The present invention adopts the above-described solution, and its beneficial effects are as follows: By optimizing the layout of the radiant tubes in the upper heating zone and arranging them in an interlaced manner, the heating mechanism can be adapted to the increased effective width of the heating furnace. This allows the improved heating furnace to perform better heat treatment processes on the workpieces, avoiding the need to replace high-cost radiant tubes and the disruption to normal production caused by long downtime. This relatively reduces the production cost of the heating furnace (as well as the production and replacement costs of the heating mechanism within the furnace), ensuring orderly production. In addition, by installing relevant temperature sensors, abnormal heating areas are monitored / alarmed, promptly reminding operators to make adjustments or stop for maintenance, thereby maintaining orderly production and ensuring the heat treatment effect of the workpieces. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the furnace body in this embodiment.
[0013] Figure 2 This is a schematic diagram of the back of the furnace body in this embodiment.
[0014] Figure 3 for Figure 2 A cross-sectional view of point AA in the diagram.
[0015] Figure 4 for Figure 2 A cross-sectional view of point BB in the diagram.
[0016] Figure 5 This is a schematic diagram of the driven side of the furnace body in this embodiment.
[0017] Figure 6 This is a schematic diagram of the transmission side of the furnace body in this embodiment.
[0018] Among them, 1-furnace body, 11-upper heating zone, 12-lower heating zone, 2-transmission mechanism, 3-conveying device, 4-first-stage radiant tube, 41-first-stage interval, 5-second-stage radiant tube, 51-second-stage interval, 6-heating unit, 61-controller, 7-main combustion air pipe, 71-branch combustion air pipe, 8-main gas pipe, 81-branch gas pipe, 9-main exhaust pipe, 91-branch exhaust pipe, 10-temperature sensor. Detailed Implementation
[0019] To facilitate understanding of this utility model, a more complete description of it is provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0020] See appendix Figure 1-6 As shown, in this embodiment, a heating mechanism for a heating furnace includes a furnace body 1, a transmission mechanism 2, and a conveying device 3 disposed within the furnace body 1. The transmission mechanism 2 is disposed on the transmission side of the furnace body 1 and is connected to the conveying device 3 in a transmission manner. It should be noted that, considering that the heating furnace involves multiple processes such as high-temperature normalizing and heat preservation in the heat treatment process of the workpiece, the overall area of the heating furnace is relatively large. Therefore, multiple furnace bodies 1 are usually set up and assembled to form a heating furnace (the working temperature of each furnace body 1 can be adjusted individually during use to cooperate with the heat treatment process to heat treat the workpiece). This can improve the efficiency of producing and transporting the entire heating furnace. Furthermore, if the furnace body 1 is found to be damaged during assembly, transportation, or later maintenance, the heating furnace can be restarted by replacing the corresponding furnace body 1, thereby reducing maintenance costs, shortening downtime for maintenance, and ensuring production efficiency. Secondly, the above-mentioned conveying mechanism is composed of multiple transmission rollers arranged in parallel along the horizontal direction. The transmission mechanism 2 drives each transmission roller to rotate to realize the function of conveying the workpiece.
[0021] See appendix Figure 1-6As shown, in this embodiment, the heating mechanism includes three primary radiant tubes 4, two secondary radiant tubes 5, and five heating units 6. The primary radiant tubes 4 are preferably made of silicon carbide, and the secondary radiant tubes 5 are preferably made of high-temperature resistant stainless steel. The power of each heating unit 6 is preferably 50 kW. KW; The furnace body 1 is divided into an upper heating zone 11 and a lower heating zone 12, with the location of the conveying device 3 as the boundary. Two primary radiant tubes 4 are embedded from the driven side of the furnace body 1 into the upper heating zone 11, and another primary radiant tube 4 is embedded from the drive side of the furnace body 1 into the upper heating zone 11. The primary radiant tubes 4 in the upper heating zone 11 are arranged alternately, and there is a primary interval 41 between adjacent primary radiant tubes 4. The secondary radiant tubes 5 run longitudinally through the lower heating zone 12, and there is a secondary interval 51 between adjacent secondary radiant tubes 5. By setting the primary interval 41, the primary radiant tubes 4 are evenly and alternately arranged in the upper heating zone 11, which can ensure that the heating degree of each position in the upper heating zone 11 is consistent. Similarly, by setting the secondary interval 51, the secondary radiant tubes 5 are evenly arranged in the lower heating zone 12, which can ensure that the heating degree of each position in the lower heating zone 12 is consistent. This achieves the effect of uniform heating on both sides of the workpiece and improves the heat treatment quality of the workpiece.
[0022] See appendix Figure 5 , 6 As shown, further, one heating unit 6 is located on the drive side of the furnace body 1 and is connected to the primary radiant tube 4 on the drive side of the furnace body 1; the other four heating units 6 are located on the driven side of the furnace body 1 and are respectively connected to the primary radiant tube 4 and the secondary radiant tube 5 on the driven side of the furnace body 1; the primary radiant tube 4 is used to heat the workpiece on the conveying device 3 from above, the secondary radiant tube 5 is used to heat the workpiece on the conveying device 3 from below, and the heating units 6 are used to provide heat sources to the primary radiant tube 4 and the secondary radiant tube 5 respectively; since the above-mentioned transmission mechanism 2 is located on the drive side of the furnace body 1, in order to ensure the stable operation of the transmission mechanism 2, the arrangement of additional related equipment on the drive side of the furnace body 1 is reduced accordingly, and sufficient space is left for the operator to maintain the transmission mechanism 2.
[0023] It should be noted that the effective internal width of traditional heating furnaces is generally 2.3 meters or 2.5 meters (mainly for traditional sheet metal or single-door ring sheet metal). Based on the dimensions of double-door rings or single-door rings with transverse discharge, the effective internal width of traditional heating furnaces does not support the production of double-door rings or single-door rings with transverse discharge. To accommodate the production of double-door rings, the traditional heating furnace needs to be redesigned and optimized, and the heating mechanism suitable for the traditional furnace also needs to be designed simultaneously. Replacing the heating tubes with longer ones to increase the heating coverage area has disadvantages such as high replacement costs, long downtime, and low economic efficiency. In this embodiment, see Appendix Figure 3 , 4As shown, by setting staggered primary radiant tubes 4 in the upper heating zone 11 of the furnace body 1, the layout of the radiant tubes is optimized without replacing multiple high-cost radiant tubes, increasing the heat coverage area of the upper heating zone 11 and ensuring uniform heating at all locations in the upper heating zone 11, thus guaranteeing the heat treatment effect of the upper heating zone 11 on the workpiece. Secondly, by setting longitudinally penetrating secondary radiant tubes 5 in the lower heating zone 12, which work in conjunction with the primary radiant tubes 4 in the upper heating zone 11, the workpiece can achieve a double-sided heat treatment effect (the heat treatment efficiency of the lower heating zone 12 may be lower than that of the upper heating zone 11, and the two zones cooperate to achieve double-sided heat treatment of the workpiece), which relatively reduces the production time required, improves production efficiency, and reduces production costs.
[0024] In addition, when the above-mentioned secondary radiant tube 5 has been used for six months, the tube body needs to be rotated 180° to avoid serious deformation of the above-mentioned secondary radiant tube 5 due to prolonged heating and gravity. Timely rotation of the tube body can relatively offset the above-mentioned deformation, thereby reducing the cost of replacing the radiant tube.
[0025] See appendix Figure 1-6 As shown, in this embodiment, the heating mechanism further includes three combustion air mains 7, three gas mains 8, and two exhaust mains 9. The combustion air mains 7 are respectively located above and below the driven side of the furnace body 1 and above the driving side of the furnace body 1, and combustion air branch pipes 71 connecting to the combustion air inlet of each heating unit 6 are bypassed to the combustion air mains 7. The gas mains 8 are respectively located above and below the driven side of the furnace body 1 and above the driving side of the furnace body 1, and gas branch pipes 81 connecting to the gas inlet of each heating unit 6 are bypassed to the gas mains 8. The exhaust mains 9 are respectively located above the driving side and the driven side of the furnace body 1, and exhaust main pipes 9 are bypassed to the gas branch pipes 81 connecting to the gas inlet of each heating unit 6. The exhaust branch pipe 91 is connected to the exhaust end of the heating unit 6; the combustion air main pipe 7 supplies combustion air to the heating unit 6 through each combustion air branch pipe 71, and the gas main pipe 8 supplies gas to the heating unit 6 through each gas branch pipe 81. By inputting combustion air and gas into the heating unit 6, the gas is fully combusted to provide a stable heat source, avoiding additional production costs (incomplete combustion leads to a reduction in the heat source provided by the radiant tube), and realizing the heating function of the heating unit 6; the exhaust main pipe 9 collects the exhaust gas output by the heating unit 6 through each exhaust branch pipe 91 and transports the exhaust gas to relevant exhaust gas treatment equipment to prevent the exhaust gas generated by the heating unit 6 from leaking and affecting producers in the vicinity of the working environment, and to ensure the personal safety of producers.
[0026] See appendix Figure 1 , 3As shown in Figure 6, the heating mechanism further includes at least one, preferably two, temperature sensors 10 (the temperature sensors 10 are preferably thermocouples, and only one temperature sensor 10 is shown in the figure above). The temperature sensors 10 are installed on the furnace body 1 and are used to detect the temperature inside the furnace body 1. One temperature sensor 10 is used to detect the heat in the area of this section of the furnace body 1, and the other temperature sensor 10 is used to re-detect the heat in the area of this section of the furnace body 1 to achieve the function of re-inspection and improve the accuracy of temperature detection. During production, the temperature sensors 10 provide real-time and accurate feedback of the furnace temperature to the back end, allowing the operator to more intuitively understand whether the temperature of the furnace body 1 is within the preset range. If an abnormality occurs in some areas, the operator can be promptly reminded to make adjustments (stop the machine or adjust the furnace temperature) to ensure stable and orderly production.
[0027] See appendix Figure 1 , 3 As shown, each heating unit 6 is further equipped with a controller 61. The controller 61 is used to control the operating status of the heating unit 6. The controller 61 can work with the temperature sensor 10 to adjust the heating unit 6 in the corresponding (problematic) area so that the heating unit 6 can adjust the connected radiation tube synchronously, ensuring the orderly and stable production and guaranteeing the heat treatment effect of the workpiece.
[0028] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or alterations made by those skilled in the art to the technical solution of this utility model without departing from its scope are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its scope should be covered within the protection scope of this utility model.
Claims
1. A heating mechanism for a heating furnace, comprising a furnace body (1), a transmission mechanism (2), and a conveying device (3) and a heating mechanism disposed within the furnace body (1), wherein the transmission mechanism (2) is disposed on the transmission side of the furnace body (1) and is connected in transmission with the conveying device (3), characterized in that: The heating mechanism includes three primary radiant tubes (4), two secondary radiant tubes (5), and five heating units (6). The furnace body (1) is divided into an upper heating zone (11) and a lower heating zone (12) by the location of the conveying device (3). Two of the primary radiant tubes (4) are installed from the driven side of the furnace body (1) into the upper heating zone (11), and another primary radiant tube (4) is installed from the drive side of the furnace body (1) into the upper heating zone (11). The primary radiant tubes (4) in the upper heating zone (11) are arranged alternately, and there is a primary gap (41) between adjacent primary radiant tubes (4). The secondary radiant tubes (5) extend longitudinally through the lower heating zone (12). Furthermore, a secondary interval (51) is provided between adjacent secondary radiant tubes (5); one of the heating units (6) is located on the drive side of the furnace body (1) and is connected to the primary radiant tube (4) on the drive side of the furnace body (1); the other four heating units (6) are located on the driven side of the furnace body (1) and are respectively connected to the primary radiant tube (4) and the secondary radiant tube (5) on the driven side of the furnace body (1); the primary radiant tube (4) is used to heat the workpiece on the conveying device (3) from above, the secondary radiant tube (5) is used to heat the workpiece on the conveying device (3) from below, and the heating unit (6) is used to provide heat source to the primary radiant tube (4) and the secondary radiant tube (5) respectively.
2. The heating mechanism of a heating furnace according to claim 1, characterized in that: The primary radiation tube (4) is made of silicon carbide, and the secondary radiation tube (5) is made of high-temperature resistant stainless steel.
3. The heating mechanism of a heating furnace according to claim 1, characterized in that: Each of the heating units (6) has a power of 50 KW.
4. The heating mechanism of a heating furnace according to claim 1, characterized in that: The heating mechanism also includes three combustion air mains (7), three gas mains (8), and two exhaust mains (9). The combustion air mains (7) are respectively located above and below the driven side of the furnace body (1) and above the driving side of the furnace body (1), and combustion air branch pipes (71) are bypassed from the combustion air mains (7) to connect to the combustion air inlet of each heating unit (6). The gas mains (8) are respectively located above and below the driven side of the furnace body (1) and above the driving side of the furnace body (1), and bypassed from the gas mains (8) to connect to each heating unit (6). The gas inlet branch pipe (81) is located above the drive side and driven side of the furnace body (1), and the exhaust branch pipe (91) is bypassed on the exhaust branch pipe (91) to connect to the exhaust end of the heating unit (6). The combustion air main pipe (7) supplies combustion air to the heating unit (6) through each combustion air branch pipe (71). The gas main pipe (8) supplies gas to the heating unit (6) through each gas branch pipe (81). The exhaust branch pipe (9) collects the exhaust gas output by the heating unit (6) through each exhaust branch pipe (91) and supplies the exhaust gas to the relevant exhaust gas treatment equipment.
5. The heating mechanism of a heating furnace according to claim 1, characterized in that: The heating mechanism also includes at least one temperature sensor (10), which is disposed on the furnace body (1) and is used to detect the temperature inside the furnace body (1).
6. The heating mechanism of a heating furnace according to claim 1, characterized in that: Each of the heating units (6) is equipped with a controller (61), which is used to control the operating status of the heating unit (6).