Energy-saving heating device for kiln

Abstract

This utility model relates to a kiln, and more particularly to an energy-saving kiln heating device, including an electric heating tube, and further comprising: a first fixing member, comprising a connecting tube and a fixing tube arranged sequentially, the angle between the connecting tube and the fixing tube being 30°~150°, the connecting tube being connected to the electric heating tube; a second fixing member, installed on the kiln, the second fixing member comprising a fixing seat and a heat insulation seat connected together, the fixing seat having a fixing hole, the heat insulation seat having a heat insulation hole, the fixing hole communicating with the heat insulation hole, the connecting tube being inserted into the fixing hole, and the fixing tube being inserted into the heat insulation hole; and a third fixing member, the third fixing member being disposed on the top of the heat insulation seat, used to fix the fixing tube to the heat insulation seat. The energy-saving kiln heating device provided by this utility model, by bending the first fixing member, prevents hot air from directly entering the wiring terminal, greatly reducing the temperature, improving the service life of the first fixing member, and enhancing the heat insulation performance of the furnace.

Description

Technical Field

[0001] This utility model relates to a kiln, and more particularly to an energy-saving kiln heating device. Background Technology

[0002] Some tunnel kilns use electric heating. The electric heating tubes are installed inside the kiln chamber, and the fixing tube at the end of the electric heating tube is installed in the mounting hole of the heating base. The electric heating tube is usually U-shaped, and the fixing tube is made of high-temperature resistant material. Figure 8 As shown, the electric heating tube is located at the top of the kiln. To facilitate the installation of the fixed tube, the mounting hole is usually larger than the fixed tube, resulting in a gap between the fixed tube and the mounting hole. The temperature inside the furnace is as high as 1700℃, and hot air will be discharged from the gap between the fixed tube and the mounting hole, resulting in poor furnace insulation. Furthermore, the high temperature will shorten the service life of the fixed tube, especially the wiring terminals. Utility Model Content

[0003] To solve the above problems, this utility model provides an energy-saving kiln heating device, the specific technical solution of which is as follows: An energy-saving kiln heating device includes an electric heating tube and further includes: a first fixing member, which includes a connecting tube and a fixing tube arranged sequentially, the angle between the connecting tube and the fixing tube being 30°~150°, and the connecting tube being connected to the electric heating tube; a second fixing member, which is installed on the kiln and includes a fixing seat and a heat insulation seat connected together, the fixing seat having a fixing hole and the heat insulation seat having a heat insulation hole, the fixing hole communicating with the heat insulation hole, the connecting tube being inserted into the fixing hole, and the fixing tube being inserted into the heat insulation hole; and a third fixing member, which is disposed on the top of the heat insulation seat and used to fix the fixing tube to the heat insulation seat.

[0004] Preferably, the mounting base is further provided with a mounting groove, which communicates with the fixing hole and the heat insulation hole.

[0005] Preferably, the third fixing member is provided with a heat insulation groove that is disposed opposite to the heat insulation hole.

[0006] Preferably, the third fixing member is provided with a connecting groove for insertion into the heat insulation seat.

[0007] Preferably, the energy-saving kiln heating device further includes: a heat insulation component, which is disposed on the third fixing component.

[0008] Preferably, the angle between the connecting pipe and the fixing pipe is 90°.

[0009] Compared with the prior art, the present invention has the following beneficial effects: The energy-saving kiln heating device provided by this utility model makes the first fixing part bend so that hot air does not directly enter the wiring terminal, and greatly reduces the temperature, improves the service life of the first fixing part and the heat preservation performance of the furnace. Attached Figure Description

[0010] Figure 1 This is a perspective view of this application; Figure 2 This is a front view of this application; Figure 3 It is along Figure 2 Sectional view of line AA in the middle; Figure 4 This is an assembly diagram of the electric heating element and the first fixing component; Figure 5 This is a three-dimensional view of the first fastener; Figure 6 This is a sectional view of the first fastener; Figure 7 This is a bottom view of the first fastener; Figure 8 This is an assembly diagram of an existing electric heating element and heating base. Detailed Implementation

[0011] The present invention will now be further described with reference to the accompanying drawings.

[0012] like Figures 1 to 7 As shown, an energy-saving kiln heating device includes an electric heating tube 4, a first fixing member 1, a second fixing member 2, and a third fixing member 3. The electric heating tube 4 is a U-shaped tube. The first fixing member 1 includes a connecting pipe 11 and a fixing pipe 12 connected together, with the angle between the connecting pipe 11 and the fixing pipe 12 being 30°~150°. The connecting pipe 11 is connected to the electric heating tube 4. The second fixing member 2 is installed on the kiln and includes a fixing seat 22 and a heat insulation seat 21 connected together. The fixing seat 22 has a fixing hole 23, and the heat insulation seat 21 has a heat insulation hole 24. The fixing hole 23 communicates with the heat insulation hole 24. The connecting pipe 11 is inserted into the fixing hole 23, and the fixing pipe 12 is inserted into the heat insulation hole 24. The third fixing member 3 is located on the top of the heat insulation seat 21 and is used to fix the fixing pipe 12 to the heat insulation seat 21.

[0013] Because the connecting pipe 11 and the fixed pipe 12 are not in a straight line but form an angle, a similar angle is formed between the fixed hole 23 and the insulation hole 24. At this angle, hot air entering the fixed hole 23 and the insulation hole 24 experiences severe flow separation. The fluid's inertia makes it difficult for it to make a sharp 90-degree turn close to the wall, thus creating a low-speed recirculation zone or vortex zone behind the angle. This vortex zone is filled with constantly rotating, chaotic airflow, forming a barrier that effectively prevents the high-temperature airflow in the furnace from continuously and smoothly impacting the heating pipe's connection point. Furthermore, the angle creates a chimney effect; a straight pipe becomes a strong thermal convection path, while the angle disrupts this path, greatly inhibiting air convection within the channel. Hot air struggles to escape upwards, and cold air struggles to be drawn downwards, effectively reducing convective heat loss through the mounting holes. This improves the overall insulation performance of the furnace, resulting in a more uniform and stable furnace temperature, and greater energy efficiency.

[0014] To facilitate processing and assembly, the included angle between the connecting pipe 11 and the fixed pipe 12 is 90°, forming a right-angle corner.

[0015] With a furnace temperature of 1700℃, the temperature at the wiring terminal of the second fixing component 2 drops to 200℃ after adopting the corner structure. This greatly improves the service life of the heating tube, reduces heat loss, enhances the insulation performance of the furnace, and makes it more energy-efficient.

[0016] To facilitate the installation of the electric heating element 4, the mounting base 22 is also provided with a mounting groove 25, which communicates with the fixing hole 23 and the heat insulation hole 24. When the electric heating element 4 is installed as an integral structure with the first fixing member 1, if the mounting groove 25 is not started, the U-shaped electric heating element 4 cannot be inserted into the fixing hole 23 and needs to be connected to the first fixing member 1 within the fixing hole 23, which will reduce assembly efficiency.

[0017] The third fixing member 3 is provided with a heat insulation groove 31 that is opposite to the heat insulation hole 24. The heat insulation groove 31 allows the fixing tube 12 to be inserted into the heat insulation groove 31, improving the fault tolerance performance and also providing space for movement when the fixing tube 12 expands due to heat.

[0018] The third fixing component 3 is provided with a connecting groove 32, which is U-shaped and matches the heat insulation seat 21, so that the heat insulation seat 21 can be accurately positioned and the position of the heat insulation seat 21 can be fixed, thereby improving the convenience of assembly and the reliability of positioning.

[0019] To further improve insulation performance, the energy-saving kiln heating device also includes an insulation component 5, which is mounted on the third fixing component 3. The insulation component 5 also covers the top of the kiln to reduce heat loss. The insulation component 5 can be made of insulation board or insulation cotton.

[0020] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. An energy-saving kiln heating device, comprising an electric heating tube (4), characterized in that, Also includes: The first fixing component (1) includes a connecting pipe (11) and a fixing pipe (12) arranged in sequence. The angle between the connecting pipe (11) and the fixing pipe (12) is 30°~150°. The connecting pipe (11) is connected to the electric heating pipe (4). The second fixing component (2) is installed on the kiln. The second fixing component (2) includes a fixing seat (22) and a heat insulation seat (21) connected together. The fixing seat (22) has a fixing hole (23), and the heat insulation seat (21) has a heat insulation hole (24). The fixing hole (23) communicates with the heat insulation hole (24). The connecting pipe (11) is inserted into the fixing hole (23), and the fixing pipe (12) is inserted into the heat insulation hole (24). The third fixing member (3) is located on the top of the heat insulation seat (21) and is used to fix the fixing tube (12) on the heat insulation seat (21).

2. The energy-saving kiln heating device according to claim 1, characterized in that, The mounting base (22) is also provided with a mounting groove (25), which is connected to the fixing hole (23) and the heat insulation hole (24).

3. The energy-saving kiln heating device according to claim 1, characterized in that, The third fixing member (3) is provided with a heat insulation groove (31) that is opposite to the heat insulation hole (24).

4. An energy-saving kiln heating device according to claim 1 or 3, characterized in that, The third fastener (3) is provided with a connecting groove (32) for insertion into the heat insulation seat (21).

5. The energy-saving kiln heating device according to claim 1, characterized in that, The energy-saving kiln heating device also includes: Thermal insulation component (5) is provided on the third fixing component (3).

6. The energy-saving kiln heating device according to claim 1, characterized in that, The angle between the connecting pipe (11) and the fixing pipe (12) is 90°.

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