Heating furnace device for metal part treatment

Abstract

The invention relates to a heating furnace device for metal workpiece treatment, and relates to the technical field of metal workpiece treatment equipment. The heating furnace device comprises a bottom pouring layer, a plurality of supporting walls located on the pouring layer and a zinc pot arranged on the supporting walls, an enclosing wall is arranged on the pouring layer and located on the periphery of the supporting walls, and a fireproof heat preservation layer surrounding the periphery of the zinc pot is fixedly arranged on the enclosing wall. A gap is formed between the fire-resistant thermal insulation layer and the peripheral surface of the zinc pot and forms a fire passing channel; a gas nozzle facing the fire passing channel is arranged on the fire-resistant heat preservation layer; flues communicated with the fire passing channel are arranged between the adjacent supporting walls and between the supporting walls and the enclosing wall below the zinc pot; and the enclosing wall is provided with a smoke exhaust outlet which is communicated with the flue and is used for communicating the flue to the drying kang. The heating furnace device is better in heat preservation effect, waste heat and waste heat of the heating furnace device can be fully utilized, and the heating furnace device is more energy-saving and environmentally friendly.

Description

Technical Field

[0001] The present application relates to the technical field of metal parts processing equipment, and in particular to a heating furnace device for metal parts processing. Background Art

[0002] In order to improve the service life of metal parts such as steel, surface treatment such as plating or lamination is usually required after the processing and forming of metal parts such as steel. Hot-dip galvanizing process is an effective metal anti-corrosion treatment method, which is also called hot-dip galvanizing and hot-dip galvanizing, and is mainly used in metal structural facilities in various industries. The hot-dip galvanizing process is to immerse the rust-removed metal parts such as steel in molten zinc liquid at about 500°C, so that the zinc layer adheres to the surface of metal parts such as steel, thereby achieving the purpose of anti-corrosion. In the hot-dip galvanizing process production line, the design and use of the heating furnace are crucial to ensure the quality of the coating and improve production efficiency. With the development of industrial technology, the hot-dip galvanizing production line has gradually developed in the direction of automation and high efficiency. As one of the key equipment, the design optimization of the heating furnace is particularly important. An efficient heating furnace can not only improve production efficiency, but also reduce energy consumption and reduce environmental pollution, thereby bringing significant economic and social benefits to the enterprise.

[0003] In the hot-dip galvanizing process, the zinc pot is used to hold the molten zinc liquid and needs to maintain a sufficiently high temperature for a long time. The heating furnace device is used to heat and insulate the zinc pot. It is a device with very high heat consumption. At present, in order to improve its insulation effect, common methods include wrapping one or more layers of insulation material on the outside of the zinc pot, increasing the thickness of the zinc pot wall, or setting an insulation layer inside the zinc pot. In addition, some companies also use electric heating to maintain the temperature in the zinc pot. Although these methods can improve the insulation effect of the zinc pot to a certain extent, they still have certain limitations. For example, simply increasing the thickness of the insulation material will increase the overall weight of the zinc pot, which is not conducive to operation and maintenance; while the electric heating method requires additional power supply, which increases the operating cost.

[0004] The heating furnace design in the related technology generally has the problem of poor thermal insulation effect, which leads to serious heat loss, high energy consumption, and unstable temperature control, which not only increases production costs but also affects the quality of the coating. Summary of the invention

[0005] In order to improve the accuracy and reliability of the temperature of a heating furnace device for processing metal parts and reduce heat waste, the present application provides a heating furnace device for processing metal parts.

[0006] The present application provides a heating furnace device for metal parts processing, which adopts the following technical solution: A heating furnace device for processing metal parts, comprising a bottom casting layer, a plurality of supporting walls located on the bottom casting layer, and a zinc pot placed on the supporting walls, wherein the zinc pot has a containing cavity for containing metallic zinc liquid; A wall is arranged around the supporting wall on the bottom casting layer, a refractory insulation layer is fixedly arranged around the zinc pot on the wall, a gap is provided between the refractory insulation layer and the outer peripheral surface of the zinc pot, and the gap forms a fire passage; a gas nozzle facing the fire passage is arranged on the refractory insulation layer; Several supporting walls are arranged at intervals, and a flue connected to the fire passage is arranged below the zinc pot, between adjacent supporting walls and between the supporting wall and the surrounding wall; a smoke exhaust outlet connected to the flue and used to connect the flue to the drying kang is opened on the surrounding wall.

[0007] By adopting the above technical scheme, the thermal insulation effect of the zinc pot can be effectively improved, heat loss can be reduced, and energy consumption can be reduced. At the same time, by setting up a fire passage and a flue, the high-temperature flue gas can be fully recycled to further improve the thermal efficiency, and the flue is set at the bottom of the zinc pot, using waste heat to play a role in heat insulation, reducing the heat of the zinc pot from being dissipated underground, and further improving the thermal insulation effect of the entire heating furnace device. In addition, the design of the flue and the exhaust outlet can guide the waste heat to the drying kang, realize waste heat recovery, and save energy and protect the environment. In summary, this scheme not only improves the thermal insulation performance of the zinc pot, but also optimizes the energy utilization efficiency of the hot-dip galvanizing production line, reduces production costs, improves production efficiency, and is more energy-saving and environmentally friendly.

[0008] Optionally, steel structure enclosure support assemblies are arranged around the periphery of the enclosure wall and the refractory insulation layer and inside or at the bottom of the bottom casting layer, and a plurality of support beams are arranged between the steel structure enclosure support assemblies and the outer peripheral surface of the zinc pot. The support beams pass through the refractory insulation layer and the ends thereof rest against the outer peripheral surface of the zinc pot.

[0009] By adopting the above technical solution, the steel enclosure support assembly can effectively enhance the structural stability of the entire heating furnace device and prevent the zinc pot from deforming under high temperature conditions. At the same time, the supporting crossbeam passes through the refractory insulation layer and rests on the outer circumference of the zinc pot, further enhancing the stability of the zinc pot and ensuring its safety and reliability during long-term use. This design not only improves the insulation effect of the zinc pot, but also extends the service life of the zinc pot and reduces maintenance costs.

[0010] Optionally, a cover plate for closing the top of the fire passage is arranged above the fire passage; the cover plate is mounted on the top of the refractory insulation layer and the top of the zinc pot; and the cover plate is covered with a first fiber blanket.

[0011] By adopting the above technical solution, the top of the fire channel can be effectively sealed, further reducing heat loss and improving the thermal insulation effect of the zinc pot. At the same time, the first fiber blanket covered on the cover plate enhances the thermal insulation performance, making the temperature of the zinc pot more stable, which helps to improve the quality and production efficiency of hot-dip galvanizing.

[0012] Optionally, the bottom casting layer is cast using lightweight casting material, and the thickness of the bottom casting layer is 250 mm to 450 mm; The enclosure wall is constructed of an outer layer of thermal insulation bricks and an inner layer of refractory bricks; The fire-resistant heat-insulating layer is built by high-aluminum fiber modules and / or ceramic fiber modules, and the bottom and outer side of the fire-resistant heat-insulating layer are covered with a second fiber blanket.

[0013] By adopting the above technical scheme, the thickness of the bottom casting layer is within the range of 250mm to 450mm, which ensures sufficient structural strength and durability, and also has good thermal insulation effect, reducing heat dissipation to the underground. The wall is composed of an outer layer of insulation bricks and an inner layer of refractory bricks, which not only improves the thermal insulation effect but also enhances the fire resistance. The refractory insulation layer adopts high-aluminum fiber modules and / or ceramic fiber modules to further improve the thermal insulation effect and reduce heat loss. The bottom and outer side of the refractory insulation layer are covered with a second fiber blanket, which further enhances the thermal insulation performance, effectively prevents heat from dissipating to the outside, and improves energy utilization efficiency. In summary, these technical means work together to significantly improve the thermal insulation effect of the zinc pot, reduce energy consumption, improve production efficiency and coating quality, and have a high cost performance.

[0014] Optionally, the supporting wall is built with heavy refractory bricks, the supporting wall is in the shape of a straight long strip, there are at least three supporting walls and all the supporting walls are arranged in parallel and spaced apart, the flue includes a straight road formed between any two adjacent supporting walls and a circular road formed between the surrounding wall and the supporting wall, and both ends of the straight road are connected to the circular road.

[0015] By adopting the above technical solution, the thermal insulation effect of the zinc pot can be improved, and the waste heat generated by the heating furnace device can be effectively utilized, which is more energy-saving and environmentally friendly. Specifically, the use of heavy refractory bricks to build the support wall can effectively resist high temperature and mechanical shock, and ensure the stability and safety of the zinc pot. The support wall is in the shape of a straight strip and there are at least three of them, which are arranged in parallel and at intervals. This structural design makes the bottom of the zinc pot evenly stressed, reduces the risk of deformation, and ensures the smooth flow of flue gas. The design of the above flue also helps to evenly distribute the high-temperature flue gas at the bottom of the zinc pot, improve the thermal insulation effect, and reduce heat loss.

[0016] Optionally, the cross section of the enclosure is rectangular, and the cross section of the zinc pot is also rectangular; the length direction of the support wall is arranged along the length direction of the zinc pot; a first support plate made of special-shaped refractory bricks is arranged above the end of the straight road, and the first support plate is mounted on two adjacent support walls; The smoke exhaust outlet is located on one side of the middle part of the supporting wall and penetrates the surrounding wall, and the smoke exhaust outlet extends through the supporting wall closest to the smoke exhaust outlet and is connected to the flue between the two adjacent supporting walls; a connecting port facing the smoke exhaust outlet is opened in the middle of the supporting wall located in the middle position; a second supporting plate is arranged above the connecting port, the second supporting plate is built with special-shaped refractory bricks and the second supporting plate is mounted on the corresponding supporting wall, and a third supporting plate built with special-shaped refractory bricks is arranged above the smoke exhaust outlet, and the third supporting plate is mounted on the corresponding supporting wall and the surrounding wall; The bottom of the zinc pot is placed on the supporting wall and the first supporting plate, the second supporting plate and the third supporting plate.

[0017] By adopting the above technical solution, the smooth flow of high-temperature flue gas is guaranteed, and at the same time, stable and reliable support is provided to the zinc pot, thereby enhancing the stability and reliability of the entire device.

[0018] Optionally, thermal insulation cotton is arranged on the side wall at the smoke exhaust outlet, and a refractory layer is built with refractory bricks on the inner side of the thermal insulation cotton.

[0019] By adopting the above technical solution, the heat loss is effectively reduced, the utilization rate of waste heat is higher, and the energy consumption is further reduced. At the same time, the fire-resistant layer is built with refractory bricks on the inside of the insulation cotton, which enhances the fire-resistant performance at the smoke exhaust outlet and ensures the safety and stability of the heating furnace device.

[0020] Optionally, a limiting retaining wall is fixedly provided on the support wall outside the zinc pot, the limiting retaining wall is built with heavy refractory bricks, and a third fiber blanket is filled between the limiting retaining wall and the outer side surface of the zinc pot near the bottom.

[0021] By adopting the above technical solution, the limit retaining wall is fixed on the supporting wall, which effectively prevents the zinc pot from being displaced under the action of external force and enhances the stability of the zinc pot. At the same time, the third fiber blanket filled between the limit retaining wall and the zinc pot further enhances the heat insulation effect, reduces heat loss, and improves the thermal insulation performance of the zinc pot.

[0022] Optionally, there are a plurality of gas nozzles which are symmetrically arranged at both ends of the zinc pot with the zinc pot as the center, and there are at least three gas nozzles arranged at each end of the zinc pot and are spaced apart in the height direction of the zinc pot.

[0023] By adopting the above technical solution, the number and layout of the gas nozzles enable the flame to evenly surround the outer circumference of the zinc pot, improving the uniformity and thermal efficiency of heating. The central symmetrical arrangement of multiple gas nozzles and the interval distribution in the height direction ensure that all parts of the zinc pot can be effectively heated, avoiding local overheating or cold spots, thereby improving the temperature control accuracy and stability of the zinc pot. This not only helps to improve the temperature uniformity of the zinc liquid, but also reduces heat loss, further reduces energy consumption, and improves the quality and production efficiency of hot-dip galvanizing.

[0024] Optionally, a plurality of fire viewing holes connected to the fire passage are provided on the refractory insulation layer; a fire viewing hole assembly is provided at the fire viewing hole, and the fire viewing hole assembly includes a sleeve inserted into the fire viewing hole, a seat plate fixed on the refractory insulation layer, and a refractory quartz glass fixed on the seat plate for closing the fire viewing hole.

[0025] By adopting the above technical solution, the combustion situation in the fire passage can be effectively monitored to ensure the stability and safety of the combustion process. The design of the fire viewing hole allows the operator to observe the flame status in real time and adjust the combustion parameters in time to avoid heat loss and environmental pollution caused by incomplete combustion. At the same time, the structural design of the fire viewing hole assembly ensures the sealing and durability, extending the service life of the equipment. The use of refractory quartz glass further enhances the safety and transparency of the fire viewing hole, making it convenient for operators to observe clearly.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. In this application, by setting a refractory insulation layer, the insulation effect of the zinc pot can be effectively improved, heat loss can be reduced, and energy consumption can be reduced. The design of the flue and exhaust outlet can guide the waste heat to the drying kang, realize waste heat recovery, and save energy and protect the environment. In summary, this solution not only improves the insulation performance of the zinc pot, but also. 2. In this application, by setting up fire passages and flues, high-temperature flue gas can be fully recycled to further improve thermal efficiency.

[0027] 3. The design of the flue and exhaust outlet in this application can guide the waste heat to the drying kang, optimize the energy utilization efficiency of the hot-dip galvanizing production line, realize waste heat recovery, reduce production costs, improve production efficiency, and be more energy-saving and environmentally friendly.

[0028] 4. In the present application, the flue is arranged at the bottom of the zinc pot, and waste heat is used to play a role of heat insulation, thereby reducing the heat dissipation of the zinc pot to the ground, and further improving the insulation effect of the entire heating furnace device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the top view and partial cross-section structure of the heating furnace device in this application.

[0030] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle.

[0031] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure at CC in the middle.

[0032] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure at DD in the middle.

[0033] Figure 5 It is a schematic diagram of the top view structure of the supporting wall and the surrounding wall in this application.

[0034] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure at EE in the middle.

[0035] Figure 7 yes Figure 5 Schematic diagram of the cross-sectional structure at FF in the middle.

[0036] Figure 8 yes Figure 5 Schematic diagram of the cross-sectional structure at GG in the middle.

[0037] Fig. 9 yes Figure 5 Schematic diagram of the cross-sectional structure at HH in the middle.

[0038] Fig.10 It is a schematic cross-sectional view of the fire viewing hole assembly in this application.

[0039] In the figure: 10. Bottom casting layer; 20. Support wall; 21. Connecting port; 30. Zinc pot; 31. Accommodating cavity; 32. Flanging; 40. Enclosure; 50. Refractory insulation layer; 51. Fire viewing hole; 60. Fire passage; 70. Gas nozzle; 80. Flue; 81. Straight road; 82. Circular road; 90. Smoke exhaust outlet; 100. Steel structure enclosure support assembly; 110. Support beam; 120. Drying kang; 130. First fiber blanket; 140. Second fiber blanket; 150. Third fiber blanket; 160. Cover plate; 170. First support plate; 180. Second support plate; 190. Third support plate; 200. Insulation cotton; 210. Refractory layer; 220. Fire viewing hole assembly; 221. Sleeve; 222. Seat plate; 223. Refractory quartz glass; 230. Limit retaining wall. DETAILED DESCRIPTION

[0040] The following will be combined with the attached Figure 1 -Attached Fig.10, the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0041] Reference Figure 1 and Figure 2 As shown, the heating furnace device for processing metal parts in the present application includes a steel enclosure support assembly 100 and a bottom casting layer 10. The steel enclosure support assembly 100 is spliced ​​by a number of H-shaped steels and steel plates. The steel enclosure support assembly 100 includes a portion surrounding the bottom casting layer 10 and a portion located in the bottom casting layer 10 or at the bottom of the bottom casting layer 10. The bottom casting layer 10 is cast with lightweight casting material. The thickness of the bottom casting layer 10 is 250 mm to 450 mm. For example, the thickness of the bottom casting layer 10 can be 350 mm.

[0042] In the present application, the zinc pot 30 can be made of a variety of materials, such as steel, aluminum, stainless steel, ceramics, etc. The size of the zinc pot 30 is 8m*1.6m*2.5m.

[0043] Reference Figure 3 , Figure 4 and Figure 5 As shown, a plurality of supporting walls 20 are provided on the bottom casting layer 10, a zinc pot 30 is provided on the supporting wall 20, and a receiving cavity 31 for receiving the metal zinc liquid is provided inside the zinc pot 30; a surrounding wall 40 is also provided around the supporting wall 20 on the bottom casting layer 10, and a refractory heat-insulating layer 50 surrounding the zinc pot 30 is fixed on the surrounding wall 40, and a gap is provided between the refractory heat-insulating layer 50 and the outer peripheral surface of the zinc pot 30, and the gap forms a fire passage 60; the refractory heat-insulating layer 50 is provided around the zinc pot 30, and the fire passage 60 is formed by the refractory heat-insulating layer 50; 0 is provided with a gas nozzle 70 facing the fire passage 60; there is a gap between the steel structure enclosure support assembly 100 surrounding the bottom casting layer 10 and the outer side surface of the refractory insulation layer 50, and a plurality of supporting beams 110 are provided between the steel structure enclosure support assembly 100 and the outer peripheral surface of the zinc pot 30. The supporting beams 110 pass through the refractory insulation layer 50 and the ends thereof abut against the outer peripheral surface of the zinc pot 30, so as to ensure the stability of the zinc pot 30 and reduce the deformation of the zinc pot 30.

[0044] Reference Figure 5 , Figure 6 and Figure 7As shown, the supporting wall 20 in the present application is built with heavy refractory bricks, and the supporting wall 20 is in the shape of a straight strip. There are three supporting walls 20 and all the supporting walls 20 are arranged in parallel and spaced apart. A flue 80 connected to the fire passage 60 is arranged below the zinc pot 30, between the adjacent supporting walls 20 and between the supporting wall 20 and the surrounding wall 40. The flue 80 includes a straight road 81 formed between any two adjacent supporting walls 20 and a circular road 82 formed between the surrounding wall 40 and the supporting wall 20. Both ends of the straight road 81 are connected to the circular road 82. The cross section of the surrounding wall 40 is rectangular, and the cross section of the zinc pot 30 is also rectangular; the length direction of the supporting wall 20 is arranged along the length direction of the zinc pot 30; a first supporting plate 170 built with special-shaped refractory bricks is arranged above the end of the straight road 81, and the first supporting plate 170 is mounted on the two adjacent supporting walls 20.

[0045] Reference Figure 1 , Figure 2 and Figure 5 As shown, a smoke outlet 90 is provided on the enclosure 40, which is connected to the flue 80 and is used to connect the flue 80 to the drying bed 120. The smoke outlet 90 is located on one side of the middle of the supporting wall 20 and penetrates the enclosure 40. The smoke outlet 90 extends through the supporting wall 20 closest to the smoke outlet 90 and is connected to the flue 80 between two adjacent supporting walls 20; thermal insulation cotton 200 is provided on the side wall at the smoke outlet 90, and a refractory layer 210 is built on the inner side of the thermal insulation cotton 200 with refractory bricks; a connecting port 21 is provided in the middle of the supporting wall 20 located in the middle position, facing the smoke outlet 90; the connecting port 21 is provided in the middle of the supporting wall 20 located in the middle position, facing the smoke outlet 90; A second support plate 180 is arranged above the exhaust port 90, which is built of special-shaped refractory bricks and is mounted on the corresponding support wall 20. A third support plate 190 built of special-shaped refractory bricks is arranged above the exhaust port 90, and the third support plate 190 is mounted on the corresponding support wall 20 and the surrounding wall 40. The bottom of the zinc pot 30 is placed on the support wall 20 and the first support plate 170, the second support plate 180 and the third support plate 190.

[0046] Reference Figure 1 and Figure 2 As shown, a cover plate 160 for closing the top of the fire passage 60 is provided above the fire passage 60; the upper side of the zinc pot 30 has an outwardly folded flange 32, and the cover plate 160 is mounted on the top of the refractory insulation layer 50 and the flange 32 of the zinc pot 30; the cover plate 160 is covered with a first fiber blanket 130. The cover plate 160 can be made of a stainless steel plate, and the top of the fire passage 60 is effectively closed by the cover plate 160, heat loss is reduced, and the insulation effect of the zinc pot 30 is improved. The first fiber blanket 130 covered on the cover plate 160 enhances the thermal insulation performance, so that the temperature of the zinc pot 30 is more stable, which helps to improve the quality and production efficiency of hot-dip galvanizing.

[0047] In the present application, the enclosure 40 is composed of an outer layer of insulation bricks and an inner layer of refractory bricks, which not only improves the insulation effect but also enhances the fire resistance. The refractory insulation layer 50 is built of high-aluminum fiber modules and / or ceramic fiber modules, and the bottom and outer side of the refractory insulation layer 50 are covered with a second fiber blanket 140, which improves the insulation effect, reduces heat loss, effectively prevents heat from being lost to the outside, and improves energy efficiency.

[0048] Combination Figure 8 and Fig. 9 As shown, a limiting retaining wall 230 is fixedly provided on the support wall 20 outside the zinc pot 30. The limiting retaining wall 230 is built with heavy refractory bricks, and a third fiber blanket 150 is filled between the limiting retaining wall 230 and the outer side surface of the zinc pot 30 near the bottom. The limiting retaining wall 230 is fixed on the support wall 20, which effectively prevents the zinc pot 30 from being displaced under the action of external force and enhances the stability of the zinc pot 30. At the same time, the third fiber blanket 150 filled between the limiting retaining wall 230 and the zinc pot 30 further enhances the heat insulation effect, reduces heat loss, and improves the heat preservation performance of the zinc pot 30.

[0049] Reference Figure 1 As shown, in the present application, there are several gas nozzles 70 and they are centrally symmetrically arranged at the two ends of the zinc pot 30 with the zinc pot 30 as the center. There are at least three gas nozzles 70 arranged at each end of the zinc pot 30 and they are spaced apart in the height direction of the zinc pot 30. The number and layout of the gas nozzles 70 enable the flame to evenly surround the outer peripheral surface of the zinc pot 30, thereby improving the uniformity and thermal efficiency of heating. The centrally symmetrical arrangement of the multiple gas nozzles 70 and the spaced distribution in the height direction ensure that all parts of the zinc pot 30 can be effectively heated, avoiding local overheating or cold spots, thereby improving the temperature control accuracy and stability of the zinc pot. This not only helps to improve the temperature uniformity of the zinc liquid, but also reduces heat loss, further reduces energy consumption, and improves the quality and production efficiency of hot-dip galvanizing.

[0050] Reference Figure 2 , Figure 4 and Fig.10As shown, in the present application, a plurality of fire-viewing holes 51 connected to the fire passage 60 are provided on the fire-resistant insulation layer 50; a fire-viewing hole assembly 220 is provided at the fire-viewing hole 51, and the fire-viewing hole assembly 220 includes a sleeve 221 inserted into the fire-viewing hole 51, a seat plate 222 fixed on the fire-resistant insulation layer 50, and a refractory quartz glass 223 fixed on the seat plate 222 for closing the fire-viewing hole 51; the seat plate 222 is located at the end of the sleeve 221, and the refractory quartz glass 223 is arranged at the end of the sleeve 221, and the refractory quartz glass 223 is fixed to the seat plate 222 by end covers and bolts and other parts. By providing the fire-viewing hole 51 and the fire-viewing hole assembly 220, the combustion situation in the fire passage 60 can be effectively monitored to ensure the stability and safety of the combustion process. The design of the fire-viewing hole 51 allows the operator to observe the flame state in real time, adjust the combustion parameters in time, and avoid heat loss and environmental pollution caused by incomplete combustion. At the same time, the structural design of the fire viewing hole assembly 220 ensures the sealing and durability, and prolongs the service life of the equipment. The use of the refractory quartz glass 223 further enhances the safety and transparency of the fire viewing hole 51, and facilitates the operator to observe clearly.

[0051] The implementation principle is as follows: the gas nozzle 70 in the heating furnace device of the present application is used to provide gas and ignite heating. The flame generated by the gas nozzle 70 rotates around the outer peripheral surface of the zinc pot 30 in the fire channel 60 to provide heat for the zinc pot 30. The high-temperature flue gas generated in the process is discharged from the flue 80 at the bottom of the zinc pot 30 and flows to the drying kang 120 through the exhaust outlet 90 for waste heat utilization; the drying kang 120 can be placed on the pickled steel and other metal parts for drying. The heating furnace device of the present application can effectively improve the thermal insulation effect of the zinc pot, reduce heat loss, and reduce energy consumption. At the same time, by setting the fire channel 60 and the flue 80, the high-temperature flue gas can be fully recycled, further improving the thermal efficiency, and the flue 80 is set at the bottom of the zinc pot 30, using waste heat to play a role in heat insulation, reducing the heat of the zinc pot 30 to the ground, and further improving the thermal insulation effect of the entire heating furnace device. In addition, the design of the flue 80 and the exhaust outlet 90 can guide the waste heat to the drying kang 120, realizing waste heat recovery and energy saving and environmental protection. This solution not only improves the thermal insulation performance of the zinc pot, but also optimizes the energy utilization efficiency of the hot-dip galvanizing production line, reduces production costs, improves production efficiency, and is more energy-saving and environmentally friendly.

[0052] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heating furnace device for metal parts processing, characterized in that: It comprises a bottom casting layer (10), a plurality of supporting walls (20) located on the bottom casting layer (10), and a zinc pot (30) placed on the supporting walls (20), wherein the zinc pot (30) has a containing cavity (31) for containing metallic zinc liquid; A surrounding wall (40) is arranged on the bottom casting layer (10) around the supporting wall (20), and a refractory heat-insulating layer (50) surrounding the zinc pot (30) is fixedly arranged on the surrounding wall (40), and a gap is provided between the refractory heat-insulating layer (50) and the outer peripheral surface of the zinc pot (30), and the gap forms a fire passage (60); a gas nozzle (70) is arranged on the refractory heat-insulating layer (50) facing the fire passage (60); A plurality of the supporting walls (20) are arranged at intervals, and a flue (80) connected to the fire passage (60) is arranged below the zinc pot (30) between adjacent supporting walls (20) and between the supporting wall (20) and the surrounding wall (40); a smoke exhaust outlet (90) connected to the flue (80) and used to connect the flue (80) to the drying kang (120) is opened on the surrounding wall (40).

2. The heating furnace device for metal product processing according to claim 1, characterized in that: A steel structure enclosure support assembly (100) is arranged around the periphery of the enclosure wall (40) and the fire-resistant insulation layer (50) and inside or at the bottom of the bottom casting layer (10), and a plurality of support beams (110) are arranged between the steel structure enclosure support assembly (100) and the outer peripheral surface of the zinc pot (30). The support beams (110) pass through the fire-resistant insulation layer (50) and the ends thereof are against the outer peripheral surface of the zinc pot (30).

3. The heating furnace device for metal product processing according to claim 1 or 2, characterized in that: A cover plate (160) for closing the top of the fire passage (60) is arranged above the fire passage (60); the cover plate (160) is mounted on the top of the fire-resistant insulation layer (50) and the top of the zinc pot (30); and the cover plate (160) is covered with a first fiber blanket (130).

4. The heating furnace device for metal product processing according to claim 1 or 2, characterized in that: The bottom casting layer (10) is cast using lightweight casting material, and the thickness of the bottom casting layer (10) is 250 mm to 450 mm; The enclosure (40) is constructed of an outer layer of thermal insulation bricks and an inner layer of refractory bricks; The fire-resistant thermal insulation layer (50) is built by high-aluminum fiber modules and / or ceramic fiber modules, and the bottom and outer side of the fire-resistant thermal insulation layer (50) are covered with a second fiber blanket (140).

5. The heating furnace device for metal product processing according to claim 1 or 2, characterized in that: The supporting wall (20) is built with heavy refractory bricks, and the supporting wall (20) is in the shape of a straight strip. There are at least three supporting walls (20) and all the supporting walls (20) are arranged in parallel and spaced apart. The flue (80) includes a straight road (81) formed between any two adjacent supporting walls (20) and a circular road (82) formed between the surrounding wall (40) and the supporting wall (20), and both ends of the straight road (81) are connected to the circular road (82).

6. The heating furnace device for metal product processing according to claim 5, characterized in that: The cross section of the enclosure wall (40) is rectangular, and the cross section of the zinc pot (30) is also rectangular; the length direction of the support wall (20) is arranged along the length direction of the zinc pot (30); a first support plate (170) made of special-shaped refractory bricks is arranged above the end of the straight road (81), and the first support plate (170) is mounted on two adjacent support walls (20); The smoke exhaust outlet (90) is located on one side of the middle part of the supporting wall (20) and penetrates the surrounding wall (40); the smoke exhaust outlet (90) extends through the supporting wall (20) closest to the smoke exhaust outlet (90) and is connected to the flue (80) between two adjacent supporting walls (20); a connecting opening (21) facing the smoke exhaust outlet (90) is opened in the middle part of the supporting wall (20) located in the middle position; a second supporting plate (180) is arranged above the connecting opening (21); the second supporting plate (180) is built with special-shaped refractory bricks and the second supporting plate (180) is mounted on the corresponding supporting wall (20); a third supporting plate (190) built with special-shaped refractory bricks is arranged above the smoke exhaust outlet (90); the third supporting plate (190) is mounted on the corresponding supporting wall (20) and the surrounding wall (40); The bottom of the zinc pot (30) is placed on the supporting wall (20) and the first supporting plate (170), the second supporting plate (180) and the third supporting plate (190).

7. The heating furnace device for metal product processing according to claim 6, characterized in that: A heat-insulating cotton (200) is arranged on the side wall of the smoke exhaust outlet (90), and a refractory layer (210) is built on the inner side of the heat-insulating cotton (200) using refractory bricks.

8. The heating furnace device for metal product processing according to claim 6, characterized in that: A limiting retaining wall (230) is fixedly provided on the support wall (20) at the outer side of the zinc pot (30); the limiting retaining wall (230) is built with heavy refractory bricks; and a third fiber blanket (150) is filled between the limiting retaining wall (230) and the outer side surface of the zinc pot (30) close to the bottom.

9. The heating furnace device for metal product processing according to claim 1 or 2, characterized in that: There are a plurality of gas nozzles (70) which are centrally symmetrically arranged at the two ends of the zinc pot (30) with the zinc pot (30) as the center. There are at least three gas nozzles (70) arranged at each end of the zinc pot (30) and they are spaced apart in the height direction of the zinc pot (30).

10. The heating furnace device for metal product processing according to claim 1 or 2, characterized in that: A plurality of fire viewing holes (51) connected to the fire passage (60) are provided on the fire-resistant heat-insulating layer (50); a fire viewing hole assembly (220) is provided at the fire viewing hole (51), and the fire viewing hole assembly (220) comprises a sleeve (221) inserted into the fire viewing hole (51), a seat plate (222) fixed on the fire-resistant heat-insulating layer (50), and a fire-resistant quartz glass (223) fixed on the seat plate (222) for closing the fire viewing hole (51).

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