Hearth of heating furnace
By designing the guide plate of the heating furnace in sections and with a sloping structure, the problem of easy cracking of the guide plate has been solved, achieving efficient utilization of thermal energy and extending service life, reducing fuel consumption and production costs, and ensuring the continuity and safety of processing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIZHOU TIANQIAO AUTOMATION TECH CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-12
AI Technical Summary
The guide plates of existing heating furnaces are made of brittle refractory materials and are quite long, resulting in slow heat transfer, easy cracking due to temperature differences, short service life, and impact on processing efficiency and cost.
采用化整为零的设计，将拱形炉罩和进料导向块分成多个短段，结合限位槽和斜坡结构，确保导料板的耐火材料在高温下不易裂开，并通过余热循环机构利用炉膛热量，减少燃料消耗。
It extends the service life of the guide plate, ensures the continuity of processing, reduces fuel consumption and production costs, and improves processing efficiency and safety.
Smart Images
Figure CN224230693U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of metal material heating equipment technology, specifically to the furnace chamber of a heating furnace. Background Technology
[0002] Hot extrusion is ideal for manufacturing complex-shaped metal parts because metals have better plasticity and less deformation force at high temperatures. During hot extrusion, the heated billet is placed into the extrusion die, and the billet is deformed according to the shape of the die cavity under the action of the extrusion rod, thereby obtaining the desired shape of the forging. Before hot extrusion, the metal bar needs to be cut into metal segments of the same length according to the size specifications, and then the metal segments are sent into the heating furnace and heated to the specified temperature.
[0003] Currently, the main heating methods for heating furnaces are electric heating and fuel combustion heating. Electric heating has a slower heating rate and higher power, which some factories cannot handle. In addition, electricity is expensive, resulting in higher production costs. On the other hand, fuel combustion heats up quickly, is cheaper per unit, and has relatively lower production costs. Therefore, most heating furnaces still prefer fuel combustion heating.
[0004] Existing heating furnaces are equipped with guide plates inside the furnace to move the fed metal segments along a set direction. However, the guide plates are all integral in structure, and in order to prolong the time the metal segments spend in the furnace, the length of the guide plates is relatively long. Furthermore, since the guide plates are made of refractory materials to resist high temperatures, and the refractory materials on the market are all brittle materials with poor thermal conductivity, the heat transfer speed is slow. Therefore, the guide plates in the furnace are very prone to cracking and damage due to large temperature differences, resulting in a short service life. Once the above situation occurs, it is necessary to stop the machine, shut down the furnace, and disassemble the machine to replace the guide plates. This not only disrupts the continuous processing and affects processing efficiency, but also wastes time and effort and increases processing costs, which requires further improvement. Utility Model Content
[0005] In view of the current state of the prior art, the technical problem to be solved by this utility model is to provide a furnace for a heating furnace that fully and rationally utilizes the heat in the high-temperature exhaust gas that was originally directly discharged to the outside, thereby greatly reducing fuel consumption, thus achieving the purpose of energy conservation and environmental protection and effectively ensuring production efficiency. Furthermore, it utilizes the waste heat circulation mechanism to effectively utilize the heat radiated from the furnace to the furnace body to further save fuel consumption, while eliminating safety hazards.
[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a furnace chamber of a heating furnace, characterized in that it includes a horizontally arranged heat insulation base plate, an arched heat insulation cover disposed on the top of the heat insulation base plate, a heat insulation base plate horizontally fixed on the top of the heat insulation base plate and located inside the arched heat insulation cover, an arched furnace cover horizontally disposed on the top of the heat insulation base plate and located inside the arched heat insulation cover, and a feeding track horizontally disposed on the top of the heat insulation base plate and located inside the arched furnace cover, wherein a tunnel heating chamber is formed between the top of the feeding track and the inner wall of the arched furnace cover.
[0007] The arched furnace hood includes multiple arched refractory hoods arranged sequentially from front to back, and the feeding track includes multiple feeding guide blocks arranged sequentially from front to back.
[0008] Each of the feeding guide blocks has several limiting grooves arranged sequentially from left to right on its top, and a track groove is formed between the limiting grooves on the same horizontal straight line on each feeding guide block.
[0009] Preferably, each of the limiting grooves has a downwardly sloping first ramp at the rear end opening edge, and the end edge of the first ramp on each limiting groove is lower than the front end opening edge of the limiting groove behind it.
[0010] Preferably, the width of the end opening of the first ramp is greater than the width of the rear opening of the limiting groove.
[0011] Preferably, a second slope with a higher front and lower back is formed between the left edge of the top opening of the leftmost limiting groove and the top left edge of the feeding guide block, and between the right edge of the top opening of the rightmost limiting groove and the top right edge of the feeding guide block.
[0012] Preferably, it also includes an arched fire baffle plate disposed between the arched heat insulation cover and the arched furnace cover.
[0013] Compared with the prior art, the advantages of this utility model are:
[0014] This invention employs a modular design, dividing the arched furnace hood and feeding track into multiple arched refractory hoods arranged sequentially from front to back, and multiple feeding guide blocks arranged sequentially from front to back. This significantly shortens the length of a single arched refractory hood and feeding guide block, thereby greatly reducing the impact of length on thermal conductivity. Consequently, each arched refractory hood and each feeding guide block will not crack when heated, significantly extending their service life. This ensures continuous processing, maintains processing efficiency, and reduces processing costs. Furthermore, the total length of the arched furnace hood and feeding track can be changed by increasing or decreasing the number of arched refractory hoods and feeding guide blocks as needed, making it flexible and convenient to use. Attached Figure Description
[0015] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent when taken in conjunction with the accompanying drawings and the following detailed description; throughout the drawings, the same or similar reference numerals denote the same or similar elements; it should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale; in the drawings:
[0016] Figure 1 This is an exploded structural diagram of the right front side of this utility model.
[0017] Figure 2 This is an exploded view of the right rear side of the feeding track of this utility model;
[0018] Figure 3 This is a schematic diagram of the usage state of this utility model. Detailed Implementation
[0019] The embodiments of this application will now be described in more detail with reference to the accompanying drawings. Although some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the accompanying drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.
[0020] It should be understood that the various steps described in the method embodiments of this application may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown, and the scope of this application is not limited in this respect.
[0021] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the relevant definitions of other terms will be given in the description below.
[0022] It should be noted that the concepts of "first" and "second" mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.
[0023] It should be noted that the terms "a" and "a plurality of" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".
[0024] like Figures 1-3 As shown, the furnace chamber of a heating furnace includes a horizontally arranged heat insulation base plate 1, an arched heat insulation cover 2 disposed on the top of the heat insulation base plate 1, a heat insulation base plate 3 horizontally fixed to the top of the heat insulation base plate 1 and located inside the arched heat insulation cover 2, an arched furnace cover horizontally disposed on the top of the heat insulation base plate 3 and located inside the arched heat insulation cover 2, and a feeding track horizontally disposed on the top of the heat insulation base plate 3 and located inside the arched furnace cover. A tunnel heating chamber 7 is formed between the top of the feeding track and the inner wall of the arched furnace cover.
[0025] The arched furnace hood comprises multiple arched refractory covers 4 arranged sequentially from front to back, and the feeding track comprises multiple feeding guide blocks 5 arranged sequentially from front to back. The advantage of this design is that the temperature inside the tunnel heating chamber 7 can reach over 1400 degrees Celsius. However, the high-temperature resistant materials used to make the feeding guide blocks 5 and the arched refractory covers 4 have poor thermal conductivity, resulting in slow heat transfer. If the length of the high-temperature resistant material is long, it will crack due to large temperature differences. Therefore, both the arched furnace hood and the feeding track are designed as separate units. The shorter arched refractory hood 4 and feed guide block 5 are designed to prevent cracking when heated, thus extending their service life. Furthermore, the total length of the arched furnace hood and feed track can be adjusted by increasing or decreasing the number of arched refractory hoods 4 and feed guide blocks 5, making it more flexible and eliminating the need for custom-made arched furnace hoods and feed tracks of various lengths for easier production. In addition, it facilitates processing and transportation; if individual arched refractory hoods 4 or feed guide blocks 5 are damaged, only the damaged arched refractory hood 4 or feed guide block 5 needs to be replaced.
[0026] Each feeding guide block 5 has several limiting grooves 51 arranged sequentially from left to right on its top. A track groove 8 is formed between the limiting grooves 51 on the same horizontal straight line on each feeding guide block 5. The metal segment material from the tunnel heating chamber 7 will fall into the track groove 8 and move forward along the track groove 8, thereby playing a role in positioning and guiding.
[0027] Each limiting groove 51 has a downward-sloping first ramp 52 at its rear end opening edge. The end edge of the first ramp 52 on each limiting groove 51 is lower than the front opening edge of the limiting groove 51 behind it. The advantage of this design is that, due to the limited dimensional and assembly accuracy of the feeding guide block 5, two adjacent feeding guide blocks 5 cannot be completely flush. As a result, when the limiting grooves 51 on the same horizontal line on two adjacent feeding guide blocks 5 are assembled, the rear end opening edge of the front limiting groove 51 may be higher than the rear one. The edge of the front opening of the limiting groove 51 is blocked. So when the metal segment moves laterally from back to front, the front end of the metal segment is blocked by the edge of the rear opening of the limiting groove 51 on the feed guide block 5 in front of it and cannot continue to move. However, due to the design of the first ramp 52, the end edge of the first ramp 52 on each limiting groove 51 is lower than the edge of the front opening of the limiting groove 51 behind it. Therefore, when the metal segment moves laterally from back to front, the metal segment can always move smoothly into the corresponding limiting groove 51 in front, thus effectively avoiding the occurrence of material blockage.
[0028] The width of the end opening of the first ramp 52 is greater than the width of the rear opening of the limiting groove 51; a second ramp 53 with a front-high and rear-low configuration is formed between the left edge of the top opening of the leftmost limiting groove 51 and the top left edge of the feeding guide block 5, and between the right edge of the top opening of the rightmost limiting groove 51 and the top right edge of the feeding guide block 5; the advantage of this design is that the near side edges of the top openings of any two adjacent first ramps 52 will form an inward angle with the top of the feeding guide block 5, and the left edge of the top opening of the leftmost limiting groove 51 and the top left edge of the feeding guide block 5 will form an inward angle with the top of the feeding guide block 5. An outer corner is formed between the right edge of the top opening of the rightmost limiting groove 51 and the top right edge of the feed guide block 5. If the outer diameter of the metal segment is large, the left and right edges of the bottom front end of the metal segment will be blocked by the aforementioned inner and outer corners, resulting in material blockage. Since the width of the end opening of the first ramp 52 is greater than the width of the rear opening of the limiting groove 51, the position of each inner corner can be pushed outward and distributed obliquely. The setting of the two second ramps 53 can eliminate the two outer corners, so that the left and right edges of the bottom front end of the metal segment with a large outer diameter can always move forward smoothly to completely avoid the occurrence of material blockage.
[0029] The furnace chamber of a heating furnace also includes an arched fire baffle 6 disposed between an arched heat insulation cover 2 and an arched furnace cover. The purpose is to prevent flames from shooting upwards from the gap between two adjacent arched fire-resistant covers 4 and directly contacting the arched heat insulation cover 2, because the arched heat insulation cover 2 has a low temperature resistance and will burn if it comes into direct contact with the flame.
[0030] Working principle:
[0031] The present invention has an external heat insulation body, which includes two vertically arranged heat insulation side plates 10 that are symmetrically and parallelly distributed to the left and right, and two heat insulation cover plates 9 that are horizontally arranged between the two heat insulation side plates 10 and symmetrically and parallelly distributed to the top and bottom. The two heat insulation side plates 10 and the two heat insulation cover plates 9 form a heat insulation chamber. The present invention is located inside the heat insulation chamber. The heat insulation base plate 1 is horizontally fixed to the top of one of the heat insulation cover plates 9 below.
[0032] Then, the metal segments cut to a fixed length are fed from back to front into each track groove 8 located in the tunnel heating chamber 7. The subsequently fed metal segments will push each metal segment in front of it to move forward along the track groove 8, thereby playing a role in limiting and guiding.
[0033] A heating gun is installed in front of the tunnel heating chamber 7, with the nozzle of the heating gun tilted downwards and inserted into the front opening of the tunnel heating chamber 7. When the heating gun is ignited, its nozzle will generate a high-temperature flame, which will be sprayed into the tunnel heating chamber 7 and heat the metal segments located in each track groove 8.
[0034] When the foremost metal segment reaches the front end of the track groove 8, the temperature will reach the predetermined value. Under the push of the subsequent metal segments, it will leave the track groove 8 and fall forward for automatic output.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. The furnace chamber of a heating furnace, characterized in that, It includes a horizontally arranged heat insulation substrate, an arched heat insulation cover disposed on top of the heat insulation substrate, a heat insulation base plate horizontally fixed to the top of the heat insulation substrate and located inside the arched heat insulation cover, an arched furnace hood horizontally disposed on top of the heat insulation base plate and located inside the arched heat insulation cover, and a feeding track horizontally disposed on top of the heat insulation base plate and located inside the arched furnace hood, wherein a tunnel heating chamber is formed between the top of the feeding track and the inner wall of the arched furnace hood. The arched furnace hood includes multiple arched refractory hoods arranged sequentially from front to back, and the feeding track includes multiple feeding guide blocks arranged sequentially from front to back. Each of the feeding guide blocks has several limiting grooves arranged sequentially from left to right on its top, and a track groove is formed between the limiting grooves on the same horizontal straight line on each feeding guide block.
2. The furnace chamber of a heating furnace according to claim 1, characterized in that, Each of the limiting grooves has a downward-sloping first ramp at the rear opening edge, and the end edge of the first ramp on each limiting groove is lower than the front opening edge of the limiting groove behind it.
3. The furnace chamber of a heating furnace according to claim 2, characterized in that, The width of the end opening of the first ramp is greater than the width of the rear opening of the limiting groove.
4. The furnace chamber of a heating furnace according to claim 1, characterized in that, A second slope with a higher front and lower back is formed between the left edge of the top opening of the leftmost limiting groove and the top left edge of the feeding guide block, and between the right edge of the top opening of the rightmost limiting groove and the top right edge of the feeding guide block.
5. The furnace chamber of a heating furnace according to claim 1, characterized in that, It also includes an arched fire baffle plate located between the arched heat insulation cover and the arched furnace cover.