Heat energy recycling mechanism of heating furnace

Abstract

The invention discloses a heat energy recycling mechanism of a heating furnace, which belongs to the technical field of heating equipment and comprises a furnace body, a heating mechanism for heating the furnace body is mounted in the furnace body, and a primary preheating mechanism for preheating air is mounted on the upper side of the furnace body. Two secondary preheating mechanisms for secondarily preheating air are mounted on the upper side of the furnace body, each secondary preheating mechanism comprises a flue gas cooling mechanism, a dust cleaning mechanism and a preheated air guiding mechanism, the flue gas cooling mechanisms are mounted on the upper side of the furnace body, the dust cleaning mechanisms are mounted in the flue gas cooling mechanisms, and the preheated air guiding mechanisms are mounted in the flue gas cooling mechanisms. And the preheated air guide mechanism is mounted on the rear side of the furnace body. By means of the mode, air can be preheated for multiple times, meanwhile, the temperature of the furnace body and the temperature of discharged flue gas are reduced, dust and other impurities on the metal through pipe can be rapidly cleaned, and the heat conductivity of the metal through pipe is maintained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heating equipment, in particular to a heating furnace heat energy recycling mechanism. BACKGROUND

[0002] The heating furnace is a key equipment for heating treatment of materials in industrial production, its principle is to generate heat through fuel combustion or electric energy conversion, etc., to heat the materials to a certain temperature to meet the process requirements, such as preheating before metal forging, heat treatment of materials, temperature control of chemical reaction, etc. A large amount of waste heat (such as high-temperature flue gas, cooling medium waste heat, furnace body heat dissipation, etc.) will be generated during the operation of the heating furnace. If these waste heat is directly discharged, it will cause serious energy waste. Through the recycling system of the recycling mechanism, the waste heat is recycled and reused, which improves the energy utilization rate of the heating furnace, reduces energy consumption and reduces pollutant emissions.

[0003] The Chinese patent with publication number CN120101489A proposes an energy-saving heating furnace, which includes a furnace body and a heating gun arranged in front of the furnace body. The furnace body includes an outer box and an inner container arranged inside the outer box. The front and rear sides of the outer box are respectively provided with a discharge hole and a feeding hole. The position of the opening at the front end of the inner container is matched with the position of the discharge hole. The flame port of the heating gun is arranged backward and aligned with the opening at the front end of the inner container through the discharge hole. The inner container includes a heat insulating body and a furnace chamber arranged inside the heat insulating body. It also includes a heat energy recycling system arranged between the air inlet of the heating gun and the inner container. The heat energy recycling system includes a smoke guide pipe vertically inserted into the top rear of the inner container and connected with the inner container, a heat absorption assembly vertically arranged on the top of the outer box and located above the smoke guide pipe, and a high-temperature fan fixed on the top of the outer box and located in front of the heat absorption assembly.

[0004] However, the technical solution of this patent has the following problems: This patent cannot preheat the air multiple times while reducing the temperature of the furnace body and the discharged flue gas, and cannot quickly clean the dust and other impurities on the metal pipe to maintain the thermal conductivity of the metal pipe.

[0005] Therefore, the present application designs a heating furnace heat energy recycling mechanism to solve the above problems. SUMMARY

[0006] In view of the above-mentioned shortcomings of the prior art, the present application provides a heating furnace heat energy recycling mechanism.

[0007] To achieve the above purpose, the present application is realized by the following technical scheme: The utility model provides a kind of heating furnace heat recovery circulating mechanism, including furnace body, heating mechanism for heating furnace body is installed in the furnace body, primary preheating mechanism for preheating air is installed on the furnace body upper side, two secondary preheating mechanisms for preheating air are installed on the furnace body upper side, and the secondary preheating mechanism includes: flue gas cooling mechanism, dust cleaning mechanism and preheated air guide mechanism. The flue gas cooling mechanism is installed on the furnace body upper side, the dust cleaning mechanism is installed in the flue gas cooling mechanism, and the preheated air guide mechanism is installed on the furnace body rear side.

[0008] Further, the flue gas cooling mechanism includes: middle side box, sealing baffle, metal pipe and fan, the middle side box is fixedly installed on the furnace body upper side, the middle side box is provided with through holes on upper and lower sides and front and rear sides, two sealing baffles are fixedly installed on the front and rear sides of the middle side box, a plurality of metal pipes are transversely and equidistantly distributed on the sealing baffles, the metal pipes penetrate through the two sealing baffles and are fixedly installed on the two sealing baffles, the fan is fixedly installed on the furnace body rear side, the input end of the fan is fixedly connected to the through hole on the rear side of the middle side box, and the through hole on the upper side of the middle side box is connected to an external flue gas treatment device.

[0009] Further, the dust cleaning mechanism includes: horizontal plate, vertical connecting plate and linear module, a plurality of horizontal plates are slidingly connected between the metal pipes, vertical protrusions are fixedly installed on the upper sides of the horizontal plates, cleaning bristles are fixedly installed on the horizontal plates and the vertical protrusions, two vertical connecting plates are fixedly installed on the left and right sides of the horizontal plates, two linear modules are fixedly installed on the left and right sides of the middle side box, and the vertical connecting plates are fixedly installed on the output ends of the linear modules.

[0010] Further, the dust cleaning mechanism further includes: a quick dust collection assembly, the quick dust collection assembly is installed on the through hole on the lower side of the middle side box, and the quick dust collection assembly includes: a connecting pipe, a first valve, a second valve, a dust collection pipe and a small vacuum cleaner, one end of the connecting pipe is fixedly installed on the through hole on the lower side of the middle side box, one end of the first valve is fixedly installed on the end of the connecting pipe away from the through hole on the lower side of the middle side box, the end of the first valve away from the connecting pipe is fixedly installed on the upper side inside the furnace body, the second valve is fixedly installed on the lateral wall of the connecting pipe, the dust collection pipe is fixedly installed on the end of the second valve away from the connecting pipe, the small vacuum cleaner is fixedly installed on the upper side of the furnace body, and the end of the dust collection pipe away from the second valve is fixedly connected to the input end of the small vacuum cleaner.

[0011] Further, the preheating air guiding mechanism comprises an air conveying pipe and vertical fixed pipes, the air conveying pipe is fixedly installed at the rear side of the furnace body, two vertical fixed pipes are fixedly installed in the furnace body, one end of the air conveying pipe is fixedly connected to the fan away from the through hole of the middle side box body, the other end of the air conveying pipe is fixedly connected to the vertical fixed pipes, and a plurality of openings are formed in the vertical fixed pipes.

[0012] Further, the heating mechanism comprises a gas conveying pipe and a third valve, the gas conveying pipe is fixedly installed at the middle side of the furnace body, a plurality of nozzles are fixedly installed on the gas conveying pipe, and the third valve is fixedly installed at the input end of the gas conveying pipe.

[0013] Further, the first-stage preheating mechanism comprises a preheating assembly and a furnace body cooling assembly, the preheating assembly is installed at the upper side of the furnace body, and the furnace body cooling assembly is installed at the left and right sides of the furnace body; the preheating assembly comprises a guide frame and cold rows, the guide frame is fixedly installed at the upper side of the furnace body, one end of the guide frame is fixedly connected to the through hole at the front side of the middle side box body, and a filter screen is fixedly installed at the other end of the guide frame; and a plurality of cold rows are fixedly installed in the guide frame, and the output end and the input end of adjacent cold rows are connected to each other.

[0014] Further, the furnace body cooling assembly comprises S-shaped pipes and a water pump, the S-shaped pipes are fixedly installed on the side walls of the furnace body, heat insulation plates are fixedly installed on the side, away from the furnace body, of the S-shaped pipes, and the water pump is fixedly installed at the rear side of the furnace body; the input end of the water pump is fixedly connected to one end of the S-shaped pipes, the output end of the water pump is fixedly connected to the input end of the cold rows, and the output end of the S-shaped pipes, away from the water pump, is fixedly connected to the output end of the cold rows.

[0015] Compared with the prior art, the application has the following beneficial effects: 1. The hot conduction liquid is pumped into the cold rows by the water pump, so that the temperature of the cold rows is increased, the air enters from the cold row position and is preheated for the first time, at the same time, the hot conduction liquid carries away the heat of the furnace body, the air enters the metal through pipe in the middle side box body, the high-temperature flue gas in the furnace body enters the middle side box body under the pressure in the furnace body, blows on the outer wall of the metal through pipe, heats the air in the metal through pipe, at the same time, the temperature of the high-temperature flue gas is reduced, the air preheated for the first time is preheated for the second time, at the same time, the temperature of the high-temperature flue gas is reduced, and the dust and other impurities in the high-temperature flue gas are partially attached to the outer wall of the metal through pipe, so that the heat energy is recycled and recovered, and the air is preheated for multiple times and the temperature of the furnace body and the discharged flue gas is reduced; 2. The linear module output end of the dust cleaning mechanism moves forward and backward to drive the vertical connecting plate to move forward and backward, the vertical connecting plate moves forward and backward to drive the horizontal plate to move forward and backward, the horizontal plate moves forward and backward to drive the cleaning brush on the horizontal plate and the vertical protrusion to move forward and backward, the cleaning brush moves forward and backward to sweep the dust and impurities attached to the outer wall of the metal pipe, the first valve of the rapid dust collection assembly is closed, the second valve is opened, and the small vacuum cleaner is started, the cleaning brush moves forward and backward to sweep the dust and impurities attached to the outer wall of the metal pipe, at this time the first valve is closed, the dust falls to the position of the first valve, the small vacuum cleaner is started to generate negative pressure to suck the dust on the first valve through the dust collection pipe, after the dust is quickly cleaned, the first valve is opened and the second valve is closed, the recovery of flue gas heat energy can be restored, which is conducive to quickly cleaning the dust and impurities on the metal pipe and maintaining the heat conductivity of the metal pipe. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 For the schematic diagram of the three-dimensional structure of the present application Figure 1 ; Figure 2 For the front view of the present application Figure 3 For the top view of the present application Figure 4 For the sectional view along the direction A-A in the Figure 3 Figure 5 For the enlarged view of A in the Figure 4 For the enlarged view of B in the Figure 6 Figure 4 For the sectional view along the direction B-B in the Figure 7 For the structure diagram of the present application removing part of the furnace body Figure 3 Figure 8 For the structure diagram of the present application removing part of the furnace body Figure 1 ; Figure 9 For the structure diagram of the present application removing part of the furnace body Figure 2 ; Figure 10 For the partial structure diagram of the secondary preheating mechanism of the present application.

[0018] The numbers in the figures represent respectively: ​​​1, furnace body; 2, heating mechanism; 21, gas delivery pipeline; 22, third valve; 23, spray head; 3, first-stage preheating mechanism; 31, guide frame; 32, cold row; 33, S-shaped pipeline; 34, water pump; 35, heat insulation plate; 4, second-stage preheating mechanism; 41, middle side box body; 42, sealing baffle; 43, metal through pipe; 44, fan; 45, through hole; 46, transverse plate; 47, vertical connecting plate; 48, linear module; 49, vertical protrusion; 410, cleaning bristles; 411, connecting pipe; 412, first valve; 413, second valve; 414, dust collection pipe; 415, small vacuum cleaner; 416, air delivery pipeline; 417, vertical fixed pipe; 418, opening. DETAILED DESCRIPTION

[0019] To make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0020] The present application will be further described in conjunction with the embodiments.

[0021] In the following description, “left”, “right”, “front”, “back”, “up”, and “down” are oriented in the perspective of the front view.

[0022] Embodiment one: in some embodiments, please refer to Figures 1-10 A heating furnace heat energy recycling mechanism, comprising a furnace body 1, a heating mechanism 2 for heating the furnace body 1 is installed in the furnace body 1, a first-stage preheating mechanism 3 for preheating air is installed on the upper side of the furnace body 1, two second-stage preheating mechanisms 4 for preheating air are installed on the upper side of the furnace body 1, the second-stage preheating mechanism 4 comprises: a flue gas cooling mechanism, a dust cleaning mechanism, and a preheated air guide mechanism; The flue gas cooling mechanism is installed on the upper side of the furnace body 1, the dust cleaning mechanism is installed in the flue gas cooling mechanism, and the preheated air guide mechanism is installed on the back side of the furnace body 1.

[0023] The flue gas cooling mechanism comprises a middle side box body 41, sealing baffles 42, metal through pipes 43 and a fan 44, the middle side box body 41 is fixedly installed on the upper side of the furnace body 1, the upper and lower sides and the front and back sides of the middle side box body 41 are provided with through holes 45, the two sealing baffles 42 are fixedly installed on the front and back sides in the middle side box body 41, a plurality of the metal through pipes 43 are evenly distributed on the sealing baffles 42 in a transverse and equidistant manner, the metal through pipes 43 are fixedly installed on the two sealing baffles 42 and penetrate the two sealing baffles 42, the fan 44 is fixedly installed on the back side of the furnace body 1, the input end of the fan 44 is fixedly connected to the through hole 45 on the back side of the middle side box body 41, the through hole 45 on the upper side of the middle side box body 41 is connected to an external flue gas treatment device, and the sealing baffles 42 are used for fixing the metal through pipes 43 and sealing the gaps between the metal through pipes 43, so that air can only pass through the metal through pipes 43.

[0024] The fan 44 of the flue gas cooling mechanism starts to suck external air from the through hole 45 on the front side of the middle side box body 41, the air enters the metal through pipes 43 in the middle side box body 41, the high-temperature flue gas in the furnace body 1 enters the middle side box body 41 under the pressure in the furnace body 1, blows on the outer wall of the metal through pipes 43, heats the air in the metal through pipes 43, and at the same time, the temperature of the high-temperature flue gas is reduced, part of the impurities such as dust in the high-temperature flue gas is attached to the outer wall of the metal through pipes 43, and after the high-temperature flue gas passes through the outer wall of the metal through pipes 43, the high-temperature flue gas enters the external flue gas treatment device from the through hole 45 on the upper side of the middle side box body 41 for environmental protection treatment.

[0025] In some embodiments, as shown in Figures 1-10 As a preferred embodiment of the present application, the dust cleaning mechanism comprises a transverse plate 46, a vertical connecting plate 47 and a linear module 48, a plurality of the transverse plates 46 are slidingly connected between the metal through pipes 43, the upper side of the transverse plate 46 is fixedly installed with a vertical protrusion 49, the transverse plate 46 and the vertical protrusion 49 are both fixedly installed with cleaning bristles 410, the two vertical connecting plates 47 are respectively fixedly installed on the left and right sides of the transverse plate 46, the two linear modules 48 are fixedly installed on the left and right sides of the middle side box body 41, and the vertical connecting plate 47 is fixedly installed on the output end of the linear module 48.

[0026] The front and back movement of the output end of the linear module 48 of the dust cleaning mechanism drives the front and back movement of the vertical connecting plate 47, the front and back movement of the vertical connecting plate 47 drives the front and back movement of the transverse plate 46, the front and back movement of the transverse plate 46 drives the front and back movement of the cleaning bristles 410 on the transverse plate 46 and the vertical protrusion 49, and the front and back movement of the cleaning bristles 410 sweeps down the impurities such as dust attached to the outer wall of the metal through pipes 43.

[0027] The dust cleaning mechanism further comprises a quick dust collecting assembly installed on the lower side through hole 45 of the middle side box body 41, which comprises a connecting pipe 411, a first valve 412, a second valve 413, a dust collecting pipe 414 and a small vacuum cleaner 415. One end of the connecting pipe 411 is fixedly installed on the lower side through hole 45 of the middle side box body 41. One end of the first valve 412 is fixedly installed on the end of the connecting pipe 411 away from the lower side through hole 45 of the middle side box body 41. The end of the first valve 412 away from the connecting pipe 411 is fixedly installed on the upper side inside the furnace body 1. The second valve 413 is fixedly installed on the middle side side wall of the connecting pipe 411. The dust collecting pipe 414 is fixedly installed on the end of the second valve 413 away from the connecting pipe 411. The small vacuum cleaner 415 is fixedly installed on the upper side of the furnace body 1. The end of the dust collecting pipe 414 away from the second valve 413 is fixedly connected to the input end of the small vacuum cleaner 415.

[0028] The first valve 412 of the quick dust collecting assembly is closed, the second valve 413 is opened, and the small vacuum cleaner 415 is started. The front and back movement of the cleaning bristles 410 sweeps the dust and other impurities attached to the outer wall of the metal through pipe 43 down. At this time, the first valve 412 is closed, and the dust falls to the position of the first valve 412. The small vacuum cleaner 415 is started to generate negative pressure to suck and adsorb the dust on the first valve 412 through the dust collecting pipe 414. After the dust is quickly cleaned, the first valve 412 is opened, and the second valve 413 is closed. The recovery of flue gas heat energy can be restored, which is conducive to quickly cleaning the dust and other impurities on the metal through pipe 43 and maintaining the heat conductivity of the metal through pipe 43.

[0029] The preheated air guiding mechanism comprises an air conveying pipeline 416 and two vertical fixed pipes 417. The air conveying pipeline 416 is fixedly installed on the rear side of the furnace body 1. The two vertical fixed pipes 417 are fixedly installed inside the furnace body 1. One end of the air conveying pipeline 416 is fixedly connected to the end of the fan 44 away from the through hole 45 of the middle side box body 41. The other end of the air conveying pipeline 416 is fixedly connected to the vertical fixed pipe 417. A plurality of openings 418 are formed in the vertical fixed pipe 417.

[0030] The fan 44 sucks the twice preheated air into the air conveying pipeline 416. The twice preheated air enters the vertical fixed pipe 417 from the air conveying pipeline 416. The twice preheated air is sprayed out from the plurality of openings 418 of the vertical fixed pipe 417.

[0031] The heating mechanism 2 comprises a gas conveying pipeline 21 and a third valve 22. The gas conveying pipeline 21 is fixedly installed on the middle side of the furnace body 1. A plurality of spray heads 23 are fixedly installed on the gas conveying pipeline 21. The third valve 22 is fixedly installed on the input end of the gas conveying pipeline 21.

[0032] The third valve 22 of the heating mechanism 2 is connected to the external gas supply equipment. When the third valve 22 is opened, the gas enters the gas delivery pipe 21 and is ejected from the nozzle 23, coming into contact with the air in the preheated furnace body 1. After being ignited by the electronic ignition device in the furnace body 1, the gas burns in the furnace body 1 to heat the furnace body 1. The preheated air itself has a certain temperature, which reduces the absorption of heat in the furnace body 1, thereby improving the thermal energy conversion efficiency of the heating furnace.

[0033] The first-level preheating mechanism 3 includes: a preheating component and a furnace cooling component. The preheating component is installed on the upper side of the furnace body 1, and the furnace cooling component is installed on the left and right sides of the furnace body 1. The preheating component includes: a guide frame 31 and a cold row 32. The guide frame 31 is fixedly installed on the upper side of the furnace body 1. One end of the guide frame 31 is fixedly connected to the front through hole 45 of the middle side box 41. The other end of the guide frame 31 is fixedly installed with a filter. Multiple cold rows 32 are fixedly installed in the guide frame 31. The output ends and input ends of adjacent cold rows 32 are connected to each other. The filter is used to filter impurities in the air.

[0034] The furnace cooling assembly includes: an S-shaped pipe 33 and a water pump 34. The S-shaped pipe 33 is fixedly installed on the side wall of the furnace body 1. A heat insulation board 35 is fixedly installed on the side of the S-shaped pipe 33 away from the furnace body 1. The water pump 34 is fixedly installed on the rear side of the furnace body 1. The input end of the water pump 34 is fixedly connected to one end of the S-shaped pipe 33, and the output end of the water pump 34 is fixedly connected to the input end of the cold row 32. The end of the S-shaped pipe 33 away from the water pump 34 is fixedly connected to the output end of the cold row 32. The heat insulation board 35 is used to isolate the temperature of the S-shaped pipe 33.

[0035] Heat transfer liquid is placed in the S-shaped pipe 33, and the water pump 34 pumps the heat transfer liquid into the radiator 32, so that the temperature of the radiator 32 increases, and air enters from the radiator 32 for the first preheating.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A heating furnace heat energy recovery circulation mechanism, comprising a furnace body (1), characterized in that: A heating mechanism (2) for heating the furnace body (1) is installed in the furnace body (1), a primary preheating mechanism (3) for preheating air is installed on the upper side of the furnace body (1), and two secondary preheating mechanisms (4) for secondary preheating air are installed on the upper side of the furnace body (1), and the secondary preheating mechanisms (4) include: a flue gas cooling mechanism, a dust cleaning mechanism, and a preheated air guiding mechanism; The flue gas cooling mechanism is installed on the upper side of the furnace body (1), the dust cleaning mechanism is installed inside the flue gas cooling mechanism, and the preheated air guiding mechanism is installed on the rear side of the furnace body (1).

2. The heating furnace heat energy recovery circulation mechanism according to claim 1, characterized in that: The flue gas cooling mechanism comprises: a middle box body (41), a sealing baffle (42), a metal through pipe (43) and a fan (44), wherein the middle box body (41) is fixedly mounted on the upper side of the furnace body (1), and through holes (45) are provided on the upper and lower sides and the front and rear sides of the middle box body (41), and two sealing baffles (42) are fixedly mounted on the front and rear sides of the middle box body (41), and a plurality of metal through pipes (43) are evenly distributed on the sealing baffles (42) at equal intervals in the horizontal direction, and the metal through pipes (43) pass through the two sealing baffles (42) and are fixedly mounted on the two sealing baffles (42), and the fan (44) is fixedly mounted on the rear side of the furnace body (1), and the input end of the fan (44) is fixedly connected to the through hole (45) on the rear side of the middle box body (41).

3. The heating furnace heat energy recovery circulation mechanism according to claim 2, characterized in that: The dust cleaning mechanism comprises: a transverse plate (46), a vertical connecting plate (47) and a linear module (48), wherein a plurality of the transverse plates (46) are slidably connected between the metal through tubes (43), a vertical protrusion (49) is fixedly mounted on the upper side of the transverse plate (46), and cleaning bristles (410) are fixedly mounted on both the transverse plate (46) and the vertical protrusion (49), two vertical connecting plates (47) are fixedly mounted on the left and right sides of the transverse plate (46), two linear modules (48) are fixedly mounted on the left and right sides of the middle box (41), and the vertical connecting plate (47) is fixedly mounted on the output end of the linear module (48).

4. The heating furnace heat energy recovery circulation mechanism according to claim 3, characterized in that: The dust cleaning mechanism further comprises: a rapid dust collection component, the rapid dust collection component being mounted on the through hole (45) at the lower side of the middle box body (41), the rapid dust collection component comprising: a connecting pipe (411), a first valve (412), a second valve (413), a dust collection pipe (414) and a small dust collector (415), one end of the connecting pipe (411) being fixedly mounted on the through hole (45) at the lower side of the middle box body (41), and one end of the first valve (412) being fixedly mounted on the connecting pipe (411) away from the through hole at the lower side of the middle box body (41). (45), one end of the first valve (412) away from the connecting pipe (411) is fixedly installed on the upper side of the interior of the furnace body (1), the second valve (413) is fixedly installed on the side wall of the connecting pipe (411), the dust collecting pipe (414) is fixedly installed on the end of the second valve (413) away from the connecting pipe (411), the small vacuum cleaner (415) is fixedly installed on the upper side of the furnace body (1), and the end of the dust collecting pipe (414) away from the second valve (413) is fixedly connected to the input end of the small vacuum cleaner (415).

5. The heating furnace heat energy recovery circulation mechanism according to claim 4, characterized in that: The preheating air guiding mechanism comprises: an air delivery duct (416) and a vertical fixed pipe (417), wherein the air delivery duct (416) is fixedly installed on the rear side of the furnace body (1), and the two vertical fixed pipes (417) are fixedly installed in the furnace body (1), one end of the air delivery duct (416) is fixedly connected to an end of the fan (44) away from the through hole (45) of the middle side box (41), and the other end of the air delivery duct (416) is fixedly connected to the vertical fixed pipe (417), and a plurality of openings (418) are provided on the vertical fixed pipe (417).

6. The heating furnace heat energy recovery circulation mechanism according to claim 5, characterized in that: The heating mechanism (2) comprises: a gas delivery pipeline (21) and a third valve (22); the gas delivery pipeline (21) is fixed to the middle side of the furnace body (1); a plurality of nozzles (23) are fixedly mounted on the gas delivery pipeline (21); and the third valve (22) is fixedly mounted at the input end of the gas delivery pipeline (21).

7. The heating furnace heat energy recovery circulation mechanism according to claim 6, characterized in that: The first-level preheating mechanism (3) comprises: a preheating component and a furnace cooling component, the preheating component is installed on the upper side of the furnace body (1), and the furnace cooling component is installed on the left and right sides of the furnace body (1).

8. The heating furnace heat energy recovery circulation mechanism according to claim 7, characterized in that: The furnace cooling assembly comprises: an S-shaped pipe (33) and a water pump (34); the S-shaped pipe (33) is fixedly mounted on the side wall of the furnace body (1); a heat insulation board (35) is fixedly mounted on the side of the S-shaped pipe (33) away from the furnace body (1); the water pump (34) is fixedly mounted on the rear side of the furnace body (1); an input end of the water pump (34) is fixedly connected to one end of the S-shaped pipe (33); an output end of the water pump (34) is fixedly connected to the preheating assembly; and an end of the S-shaped pipe (33) away from the water pump (34) is fixedly connected to the preheating assembly.

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