Furnace body waste heat circulating mechanism of heating furnace

Abstract

The utility model relates to a furnace body waste heat circulation mechanism of a heating furnace. The furnace body waste heat circulation mechanism comprises a furnace body outer box, a heat insulation inner box arranged in the furnace body outer box and an air outlet pipe inserted into the top of the furnace body outer box. The upper, lower, left and right outer walls of the heat insulation inner box are spaced from the upper, lower, left and right inner walls of the furnace body outer box by a certain distance so that a rectangular ring heat conduction cavity can be formed between the upper, lower, left and right outer walls of the heat insulation inner box and the upper, lower, left and right inner walls of the furnace body outer box, and a root opening of the air outlet pipe communicates with the interior of the rectangular ring heat conduction cavity. A plurality of air inlet holes are formed in the top of the furnace body outer box; according to the utility model, the heat radiated from the hearth to the outer box of the furnace body is effectively utilized, so that the temperature of the inlet air flow of the high-temperature fan is increased, the consumption of fuel is saved, the waste of energy is effectively prevented, and the environment temperature can be prevented from greatly rising to ensure the working comfort of operators; and meanwhile, the temperature of the outer box of the furnace body is obviously reduced, so that potential safety hazards are eliminated.

Description

Technical Field

[0001] This application relates to the field of metal material heating equipment technology, specifically to a furnace body waste heat circulation mechanism for a heating furnace. Background Technology

[0002] Heating furnaces are widely used in industries such as metallurgy, chemical industry, petroleum, and machinery manufacturing. The function of a heating furnace is to generate a high-temperature heat source through fuel combustion, thereby heating materials (usually metals). Continuous heating furnaces are a common type of metal material heating furnace. Their structure mainly includes a furnace body, a furnace chamber located inside the furnace body for heating metal materials, a heating chamber located at the furnace chamber outlet for burning fuel and sending the heat generated by combustion into the furnace chamber, and a heat energy recovery mechanism located on the furnace body and connected to the furnace chamber to absorb the heat of high-temperature exhaust gas.

[0003] Although existing continuous heating furnaces are equipped with insulation boxes outside the furnace to reduce heat loss, the high temperature inside the furnace (generally above 1000 degrees Celsius) causes the heat loss to also heat the insulation boxes to over 200 degrees Celsius. This heat is then transferred to the outer casing of the furnace, causing it to reach nearly 100 degrees Celsius. Operators could easily be burned by the outer wall of the outer casing, posing a serious safety hazard. Furthermore, the heat lost from the furnace is directly dissipated outside, resulting in energy waste and a significant increase in ambient temperature, affecting operator comfort. Further improvements are needed. Utility Model Content

[0004] 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 waste heat circulation mechanism for a heating furnace that effectively utilizes the heat radiated from the furnace chamber to the outer casing of the furnace body, thereby increasing the temperature of the airflow entering the high-temperature fan to save fuel consumption. This effectively prevents energy waste, avoids a significant rise in ambient temperature to ensure the working comfort of operators, and significantly reduces the temperature of the outer casing of the furnace body to eliminate safety hazards.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a furnace body waste heat circulation mechanism for a heating furnace, characterized in that it includes an outer furnace box, an insulated inner box disposed in the outer furnace box, and an air outlet pipe inserted into the top of the outer furnace box.

[0006] The upper, lower, left, and right outer walls of the heat-insulating inner box are spaced a certain distance from the upper, lower, left, and right inner walls of the furnace outer box, so that a rectangular ring heat-conducting cavity is formed between the upper, lower, left, and right outer walls of the heat-insulating inner box and the upper, lower, left, and right inner walls of the furnace outer box. The root opening of the air outlet pipe is connected to the interior of the rectangular ring heat-conducting cavity.

[0007] The top of the outer casing of the furnace is provided with multiple air inlets.

[0008] Preferably, the heat-insulating inner box includes a horizontally arranged top plate and two side plates fixed to the left and right sides of the top plate and arranged symmetrically. The lower edges of the two side plates each form a horizontally arranged bottom plate, and the end edges of the two bottom plates are fixed to each other.

[0009] Preferably, the top plate has a plurality of first heat-conducting holes, and each bottom plate has a plurality of second heat-conducting holes.

[0010] Preferably, it also includes an insulated chamber located in the heat-insulated inner box. The insulated chamber includes two vertically arranged and symmetrically parallel side plates and two horizontally arranged and symmetrically parallel cover plates between the two side plates. A rectangular cylindrical insulated cavity is formed between the two side plates and the two cover plates.

[0011] Preferably, a plurality of vertically arranged partition plates are fixed on the bottom inner wall of the furnace outer casing, arranged sequentially from front to back and all located below the heat-insulating inner casing. The upper edge of each partition plate is fixed between the bottom outer walls of the two base plates so that the bottom outer wall of the heat-insulating inner casing is spaced a certain distance from the bottom inner wall of the furnace outer casing.

[0012] Preferably, each of the leftmost partition plates has multiple ventilation slots distributed from left to right along its upper and lower edges.

[0013] Preferably, the bottom of the outer casing of the furnace is also fitted with a number of air intake fans arranged sequentially from front to back, and the air outlet of each air intake fan is arranged facing upward and is connected to the interior of the rectangular ring heat conduction cavity.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] This invention incorporates an insulated inner chamber between the furnace chamber and the outer furnace casing, forming a rectangular annular heat-conducting cavity. This allows heat lost from the furnace chamber to accumulate within this cavity. Air, warmer than room temperature and located within this cavity, is then introduced into a high-temperature fan via an outlet duct. This effectively utilizes the heat radiated from the furnace chamber to the outer furnace casing, increasing the temperature of the incoming airflow and saving fuel. This design effectively prevents energy waste and avoids a significant increase in ambient temperature, ensuring operator comfort. Furthermore, it significantly reduces the temperature of the outer furnace casing, preventing burns even if operators accidentally touch its outer wall, thus eliminating safety hazards. Attached Figure Description

[0016] 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:

[0017] Figure 1 This is an exploded top view of the right front side of this utility model.

[0018] Figure 2 This is a top-view structural diagram of the right front side 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 1-2 As shown, a waste heat circulation mechanism for a heating furnace includes an outer furnace casing 1, an insulated inner casing 2 disposed in the outer furnace casing 1, and an air outlet pipe 3 inserted into the top of the outer furnace casing 1.

[0025] The upper, lower, left, and right outer walls of the heat-insulating inner box 2 are spaced a certain distance from the upper, lower, left, and right inner walls of the furnace outer box 1 so that a rectangular ring heat-conducting cavity 4 is formed between the upper, lower, left, and right outer walls of the heat-insulating inner box 2 and the upper, lower, left, and right inner walls of the furnace outer box 1. The root opening of the air outlet pipe 3 is connected to the interior of the rectangular ring heat-conducting cavity 4.

[0026] The top of the outer casing 1 of the furnace has multiple air inlets 101.

[0027] The heat-insulating inner box 2 includes a horizontally arranged top plate 21 and two symmetrically arranged surrounding plates 22 fixed on the left and right sides of the top plate 21. The lower edges of the two surrounding plates 22 each form a horizontally arranged bottom plate 221, and the end edges of the two bottom plates 221 are fixed to each other.

[0028] The top plate 21 has multiple first heat conduction holes 211, and each bottom plate 221 has multiple second heat conduction holes 222.

[0029] A waste heat circulation mechanism for a heating furnace body further includes an insulation chamber 5 disposed in an insulated inner box 2. The insulation chamber 5 includes two vertically arranged and symmetrically parallel side plates 52 and two horizontally arranged and symmetrically parallel cover plates 51 between the two side plates 52. A rectangular cylindrical insulation cavity 53 is formed between the two side plates 52 and the two cover plates 51.

[0030] Multiple vertically arranged partition plates 6 are fixed on the bottom inner wall of the outer casing 1 of the furnace body, arranged sequentially from front to back and located below the inner casing 2 of the furnace body. The upper edge of each partition plate 6 is fixed between the bottom outer walls of the two bottom plates 221 so that the bottom outer wall of the inner casing 2 of the furnace body is separated from the bottom inner wall of the furnace body 1 by a certain distance.

[0031] Each partition plate 6 has multiple ventilation slots 61 arranged from left to right along its upper and lower edges.

[0032] The bottom of the outer casing 1 of the furnace is also fitted with several air intake fans 7 arranged sequentially from front to back. The air outlet of each air intake fan 7 is set upward and is connected to the interior of the rectangular ring heat conduction cavity 4.

[0033] The working principle is as follows:

[0034] The furnace chamber 10 is placed inside the rectangular cylindrical insulation cavity 53, with the front opening of the furnace chamber 10 extending to the front exterior of the furnace outer casing 1. The heating gun 8 is fixed to the front of the furnace outer casing 1, with the nozzle of the heating gun 8 tilted downwards and aligned with the front opening of the furnace chamber 10. The exhaust gas recovery system 9 and the fan 11 are both located on the top of the furnace outer casing 1. The end opening of the flue duct 91 in the exhaust gas recovery system 9 passes downwards through the furnace outer casing 1, the inner insulation box 2, the insulation chamber 5, and the top of the furnace chamber 10, extending into the interior of the furnace chamber 10. The end opening of the exhaust gas recovery system 9's induced draft pipe 92 is connected to the outlet of the high-temperature fan 11. The end opening of the ventilation pipe 93 in the recovery system 9 is connected to the air inlet of the heating gun 8. After the heating gun 8 is ignited, it will generate a high-temperature flame. The high-temperature flame is injected into the furnace 10 through the front opening of the furnace 10, thereby heating the metal segment material located in the furnace 10. The high-temperature exhaust gas generated during the heating process enters the interior of the heat absorption component 94 through the smoke guide pipe 91. At the same time, the high-temperature fan 11 is started to send the outside air into the interior of the heat absorption component 94, thereby transferring the heat in the high-temperature exhaust gas to the air located inside the heat absorption component 94, and then entering the air inlet of the heating gun 8 through the ventilation pipe 93 to participate in the fuel combustion inside the heating gun 8.

[0035] Although the furnace chamber 10 is equipped with an insulation chamber 5 to reduce heat loss, some heat still radiates outward. During the radiation process, the air inside the rectangular ring heat conduction cavity 4 will heat up, which in turn will cause the temperature of the outer casing 1 of the furnace to rise. Once the operator touches the outer wall of the outer casing 1 of the furnace, there is a risk of burns.

[0036] The feature of this utility model is that the end opening of the air outlet pipe 3 is connected to the air inlet of the high-temperature fan 11. When the high-temperature fan 11 is working, the preheated air located inside the rectangular ring heat conduction cavity 4 can be sent into the high-temperature fan 11 to replace the lower temperature outside air. The outside air will enter the inside of the rectangular ring heat conduction cavity 4 through multiple air inlets 101, thus forming an air circulation. The outside air continuously entering the rectangular ring heat conduction cavity 4 will continuously carry away the heat radiated outward from the heat insulation chamber 5, thereby effectively reducing the temperature of the outer casing 1 of the furnace and eliminating the risk of accidental burns to the operator. At the same time, the high-temperature fan 11 does not need to absorb outside air, but absorbs the air located inside the rectangular ring heat conduction cavity 4 and preheats it, thereby further increasing the base temperature of the air entering the heat absorption component 94, and ultimately further increasing the temperature of the air sent into the heating gun 8, thereby further saving fuel consumption.

[0037] The arrangement of multiple first heat conduction holes 211 and multiple second heat conduction holes 222 allows the heat radiated from the furnace 10 to be concentrated and orderly guided outward through the heat insulation chamber 5 into the rectangular ring heat conduction cavity 4.

[0038] To increase the airflow into the rectangular ring heat conduction cavity 4, one or more intake fans 7 can be turned on to allow outside air to quickly enter the rectangular ring heat conduction cavity 4.

[0039] 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. A waste heat circulation mechanism for a heating furnace, characterized in that, It includes the outer casing of the furnace body, the heat-insulating inner casing located inside the outer casing of the furnace body, and the air outlet pipe inserted into the top of the outer casing of the furnace body; The upper, lower, left, and right outer walls of the heat-insulating inner box are spaced a certain distance from the upper, lower, left, and right inner walls of the furnace outer box, so that a rectangular ring heat-conducting cavity is formed between the upper, lower, left, and right outer walls of the heat-insulating inner box and the upper, lower, left, and right inner walls of the furnace outer box. The root opening of the air outlet pipe is connected to the interior of the rectangular ring heat-conducting cavity. The top of the outer casing of the furnace is provided with multiple air inlets.

2. The waste heat circulation mechanism for a heating furnace according to claim 1, characterized in that, The heat-insulating inner box includes a horizontally arranged top plate and two side panels fixed to the left and right sides of the top plate and arranged symmetrically. The lower edges of the two side panels each form a horizontally arranged bottom plate, and the end edges of the two bottom plates are fixed to each other.

3. The waste heat circulation mechanism for a heating furnace according to claim 2, characterized in that, The top plate has multiple first heat conduction holes, and each bottom plate has multiple second heat conduction holes.

4. The waste heat circulation mechanism of a heating furnace according to claim 1, characterized in that, It also includes an insulated chamber located in the heat-insulated inner box. The insulated chamber includes two vertically arranged and symmetrically parallel side plates and two horizontally arranged and symmetrically parallel cover plates between the two side plates. A rectangular cylindrical insulated cavity is formed between the two side plates and the two cover plates.

5. The waste heat circulation mechanism for a heating furnace according to claim 1, characterized in that, The bottom inner wall of the furnace outer casing is also fixed with multiple vertically arranged partition plates that are arranged sequentially from front to back and are all located below the heat-insulating inner casing. The upper edge of each partition plate is fixed between the bottom outer walls of the two base plates so that the bottom outer wall of the heat-insulating inner casing is spaced a certain distance from the bottom inner wall of the furnace outer casing.

6. The waste heat circulation mechanism of a heating furnace according to claim 5, characterized in that, On the leftmost side, each of the partition plates has multiple ventilation slots distributed from left to right along its upper and lower edges.

7. The waste heat circulation mechanism of a heating furnace according to claim 1, characterized in that, The bottom of the outer casing of the furnace is also fitted with several air intake fans arranged sequentially from front to back. The air outlet of each air intake fan is set upward and is connected to the interior of the rectangular ring heat conduction cavity.

Images