Furnace nose for hot galvanizing of steel strip
By installing inclined heating plates and jet nozzles inside the furnace nose, the problems of zinc ash falling and slag contamination were solved, improving the quality and efficiency of hot-dip galvanizing of steel strips.
Patent Information
- Application Number
- CN202520567119.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-28
AI Technical Summary
The zinc ash on the inner wall of the existing furnace nose can easily fall onto the surface of the steel strip, affecting the quality of the steel strip. In addition, the slag in the zinc liquid can easily come into contact with the steel strip, causing pollution.
An inclined heating plate is installed inside the furnace nose to heat the inner cavity of the furnace nose, preventing zinc ash from falling and melting the zinc ash. The jet nozzle sprays air to cover the interface between the steel strip and the zinc liquid, blowing away the slag.
This effectively avoids zinc ash contamination of the steel strip, improves the surface quality of the steel strip, reduces slag adhesion, and achieves low-cost improvements to existing equipment.
Smart Images
Figure CN223906917U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hot galvanizing auxiliary device field, specifically is a kind of furnace snout for steel strip hot galvanizing. BACKGROUND
[0002] The steel strip of hot galvanizing is heated to certain temperature before entering molten zinc liquid, and it needs to be controlled at about 460 DEG C when entering zinc liquid, so a closed device is connected between heating furnace and zinc pot to ensure that the steel strip passing through is not oxidized, and the closed device is commonly known as "furnace snout". Except that the conventional furnace snout is connected with heating furnace and galvanizing bath at both ends and passes through steel strip in the middle, other sides are sealed to ensure that the protective gas in the furnace does not leak.
[0003] The melting point of zinc is 419.53 DEG C, the temperature of zinc liquid in galvanizing bath is generally controlled at 460 DEG C, and the temperature of steel strip entering galvanizing bath is also controlled at about 460 DEG C, so there is zinc liquid evaporation in the furnace snout, and zinc vapor rises and condenses to form zinc ash when meeting cold furnace wall, and zinc ash deposits to a certain thickness and falls off from the inner wall of the furnace snout, especially when the steel strip runs unstably and shakes, it is more likely to fall off, and if it adheres to the steel strip, it causes the poor wettability of scattered areas on the steel strip and causes the steel strip to be plated.
[0004] In addition, since dross is continuously generated in the zinc liquid, when the steel strip enters the zinc liquid, the dross adheres to the surface of the steel strip if the dross contacts the steel strip, which easily affects the surface quality of the steel strip. CONTENT OF UTILITY MODEL
[0005] In order to solve the technical problems that zinc ash in the inner wall of the furnace snout easily falls to the surface of the steel strip and the dross in the furnace snout easily contacts the steel strip and contaminates the steel strip, the utility model provides a furnace snout for steel strip hot galvanizing.
[0006] In order to achieve the above purpose, the utility model adopts the specific scheme that a furnace snout for steel strip hot galvanizing includes an obliquely arranged furnace front wall, a furnace rear wall and a furnace side wall connected between the furnace front wall and the furnace rear wall, the steel strip to be galvanized passes through the inner cavity of the furnace snout and is immersed in zinc liquid, and the furnace front wall is provided with an obliquely arranged heating plate on one side facing the furnace rear wall, the inclination angle of the heating plate is greater than the inclination angle of the furnace front wall, and the lower end of the heating plate is vertically downwardly projected on the zinc liquid; the bottom of the heating plate is provided with a gas delivery pipe and is installed with a gas jet nozzle, and the gas jet nozzle can cover the junction of the steel strip and the liquid surface of the zinc liquid.
[0007] As a further optimization of the above technical scheme, the upper end of the heating plate is rotatably installed in the upper part of the inner side of the furnace front wall, and the lower part of the inner side of the furnace front wall is provided with an adjusting screw capable of controlling the inclination angle of the heating plate.
[0008] As a further optimization of the above technical solutions, the upper portion of the inner side of the furnace front wall is provided with a first mounting seat, at least two first mounting blocks are arranged at intervals along the upper edge of the heating plate, and a first mounting hole is formed in each of the two first mounting blocks for the upper rotating shaft of the first mounting seat to pass through.
[0009] As a further optimization of the above technical solutions, second mounting blocks are arranged on both sides of the heating plate, a second mounting seat is arranged on the lower portion of the inner side of the furnace front wall, one end of the adjusting screw is hinged to the second mounting seat, the other end passes through a second mounting hole formed in the second mounting block, and front and rear nuts capable of clamping the two sides of the heating plate are arranged on the adjusting screw.
[0010] As a further optimization of the above technical solutions, the second mounting hole is a strip-shaped hole.
[0011] As a further optimization of the above technical solutions, the upper end of the heating plate is fixed to the upper portion of the inner side of the furnace front wall, and the lower portion of the inner side of the furnace front wall is connected to the heating plate by a fixing rod.
[0012] As a further optimization of the above technical solutions, the inclination angle of the heating plate is 45-75°.
[0013] As a further optimization of the above technical solutions, the gas delivery pipe is horizontally arranged at the bottom of the heating plate, and the gas injection nozzle is a plurality of and is arranged at intervals along the length direction of the gas delivery pipe.
[0014] As a further optimization of the above technical solutions, a plurality of connecting rods are arranged at intervals on the side of the bottom of the heating plate facing the furnace back wall, the plurality of connecting rods are arranged in a row and the straight line where they are located is parallel to the liquid surface of the zinc liquid, and the gas delivery pipe is fixed to one end of the connecting rod away from the heating plate.
[0015] As a further optimization of the above technical solutions, the inner cavity of the furnace nose is provided with a front overflow groove close to the furnace front wall and a rear overflow groove close to the furnace back wall, and a dross suction pump is connected to each of the front overflow groove and the rear overflow groove, or the inner cavity of the furnace nose is provided with an annular overflow groove, and a dross suction pump is connected to the annular overflow groove.
[0016] Compared with the prior art, the present application has the following advantages:
[0017] 1. The utility model discloses a heating plate is arranged in the furnace front wall inboard, and the heating plate can heat the furnace nose inner chamber to a certain extent, makes the furnace wall especially the furnace front wall temperature rise, reduces the zinc vapor and meets cold adhesion, and the heating plate after heating can also avoid the zinc vapor in the furnace nose and meets cold adhesion on it, through the control heating plate's inclination angle is greater than the furnace front wall's inclination angle, on one hand, when the zinc ash that furnace front wall in adhesion falls under the vibration, because the zinc ash can avoid falling into the steel band and causing the pollution of steel band due to the block of heating plate, on the other hand, the greater the inclination angle, the more convenient the zinc ash that falls on falls, and the lower end vertical projection of heating plate is located on the zinc liquid, can make the zinc ash that falls along the heating plate falls into the zinc liquid. In addition, through the control heating temperature of heating plate can also make the zinc ash that falls, adheres and melts and forms liquid zinc, and falls into the galvanizing pool below.
[0018] Through setting up the gas pipe and the air jet nozzle at the bottom of the heating plate, the gas stream that the air jet nozzle sprays covers the junction of the steel band and the zinc liquid surface, and blows away the dross at the junction, to a certain extent, avoids the dross adhering when the steel band enters the zinc liquid, and sets up the air jet nozzle at the bottom of the heating plate, which is close to the junction of the steel band and the zinc liquid surface, and can blow away the dross at the junction without large gas stream pressure.
[0019] 2. Through the upper end of the heating plate is rotatably installed at the furnace front wall, and the lower part of the furnace front wall is provided with an adjusting screw rod to adjust the inclination angle of the heating plate, which can not only keep the inclination angle of the heating plate during the operation of the device, but also adjust the distance between the heating plate and the furnace front wall when the device is stopped for cleaning after a period of operation, so that the inclination angle of the heating plate continues to increase, and the residues on the surface of the heating plate are more easily fallen off. At the same time, the increased distance also makes the cleaning tool more flexible to enter between the heating plate and the furnace front wall, and remove the adhesions on the furnace front wall and the heating plate.
[0020] 3. The furnace nose provided by the utility model is an improvement on the existing furnace nose device, which can alleviate the problem of zinc ash and dross polluting the steel band at low cost without replacing a new furnace nose or adjusting the inclination angle of the furnace nose. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is the overall structure schematic diagram of the utility model;
[0022] Figure 2 It is the furnace nose of the utility model; Figure 1 It is the enlarged view of A in the middle;
[0023] Figure 3 It is the front view schematic diagram of the heating plate;
[0024] Figure 4 It is the top view schematic diagram of the heating plate;
[0025] Mark: 1, zinc liquid, 2, galvanizing tank, 3, reversing wheel, 4, steel strip, 5, furnace nose, 501, furnace front wall, 502, front overflow groove, 503, furnace rear wall, 504, rear overflow groove, 505, furnace side wall, 6, heating plate, 7, first mounting seat, 8, dross suction pump, 9, second mounting seat, 10, adjusting screw, 11, front nut, 12, rear nut, 13, air injection nozzle, 14, gas delivery pipe, 15, first mounting block, 16, second mounting block, 17, second mounting hole, 18, connecting rod, 19, air inlet pipe, 20, power cord, 21, dross suction pipe. DETAILED DESCRIPTION
[0026] The technical scheme of the utility model will be further described in detail below in combination with specific embodiments, and the parts not described and disclosed in the following embodiments of the utility model should be understood as the prior art known or known by the person skilled in the art, such as the internal structure and heating principle of the heating plate.
[0027] Embodiment 1
[0028] Please refer to Figure 1 、 2 The utility model discloses a furnace nose for steel strip hot galvanizing, which is the same as the prior art, and the furnace nose 5 is a flat cylinder, comprising an inclined furnace front wall 501, a furnace rear wall 503 and a furnace side wall 505 connected between the furnace front wall 501 and the furnace rear wall 503, the furnace side wall 505 is oppositely arranged in two pieces, and the furnace front wall 501, the furnace rear wall 503 and the two pieces of furnace side wall 505 jointly enclose the inner cavity of the furnace nose. When the steel strip 4 is hot galvanized, the lower end of the furnace nose 5 is immersed in the zinc liquid 1 of the galvanizing tank 2, the steel strip 4 to be galvanized passes through the inner cavity of the furnace nose and is immersed in the zinc liquid 1, and the galvanizing tank 2 is provided with a reversing wheel 3, and the steel strip 4 entering the galvanizing tank 2 enters the subsequent cooling process after being reversed by the reversing wheel 3.
[0029] Different from the prior art, one side of the furnace front wall 501 facing the furnace rear wall 503 is provided with an inclined heating plate 6. The heating plate 6 is a commercially available product, which usually works on the principle of resistance heating. When the electric current passes through the resistance wire or resistance element inside the heating plate 6, the resistance will convert the electric energy into heat energy, thereby increasing the surface temperature of the heating plate 6.
[0030] The inclination angle of the heating plate 6 is greater than that of the furnace front wall 501, and the vertical downward projection of the lower end of the heating plate 6 is located on the zinc liquid 1. It should be noted that the inclination angle of the heating plate 6 is the acute angle between the heating plate 6 and the horizontal plane, and the inclination angle of the furnace front wall 501 is also the acute angle between the furnace front wall 501 and the horizontal plane.
[0031] In use, the heating plate 6 is powered to heat, and the heating plate 6 can heat the inner cavity of the furnace nose 5 to a certain extent, so that the temperature of the furnace front wall 501 close to the heating plate 6 is increased, and the condensation of zinc vapor is reduced. By controlling the inclination angle of the heating plate 6 to be greater than the inclination angle of the furnace front wall 501, on the one hand, when the zinc ash attached in the furnace front wall 501 falls due to vibration, the zinc ash can be prevented from falling into the steel belt 4 and polluting the steel belt 4 due to the blocking of the heating plate 6, and on the other hand, the greater the inclination angle, the more convenient the zinc ash falling thereon falls, and the lower end of the heating plate 6 is vertically downwardly projected on the zinc liquid 1, so that the zinc ash falling along the heating plate 6 falls into the zinc liquid 1. In addition, by controlling the heating temperature of the heating plate 6 to be above the melting point of the zinc ash, the zinc ash falling and attached thereon can also be melted to form liquid zinc, which then falls into the galvanizing tank 2 below.
[0032] The bottom of the heating plate 6 is provided with a gas supply pipe 14 and is installed with a gas nozzle 13, and the gas outlet of the gas nozzle 13 is directed to the junction of the steel belt 4 and the liquid surface of the zinc liquid 1, so that the gas flow can cover the junction of the steel belt 4 and the liquid surface of the zinc liquid 1. The dregs at the junction are blown away, which to some extent avoids the adhesion of the dregs when the steel belt 4 enters the zinc liquid 1. In addition, the direction of the gas outlet of the gas nozzle 13 can also be controlled so that the lower edge of the gas flow covers the junction of the steel belt 4 and the liquid surface of the zinc liquid 1, and the upper edge falls on the steel belt 1.
[0033] There is also a scheme in the prior art that the gas nozzle 13 is arranged on the furnace front wall 501 to blow away the dregs at the junction. The gas nozzle 13 is arranged at the bottom of the heating plate 6 in the utility model, which is close to the junction of the steel belt 4 and the liquid surface of the zinc liquid 1, so that the dregs at the junction can be blown away without a large gas flow pressure.
[0034] The gas supply pipe 14 is horizontally arranged at the bottom of the heating plate 6, and the gas nozzle 13 is multiple and is arranged at intervals along the length direction of the gas supply pipe 14. The multiple and interval arranged gas nozzles 13 can more comprehensively cover the junction of the steel belt 4 and the liquid surface of the zinc liquid 1, so as to ensure that the dregs at the junction are effectively blown away and the adhesion of the dregs when the steel belt 4 enters the zinc liquid 1 is avoided.
[0035] It can be understood that, as Figure 3As shown, a power cord 20 is provided on the heating plate 6 to connect the power supply and start the heating plate 6. An inlet pipe 19 is connected to the gas supply pipe 14 to supply gas into it. A through hole is provided on the furnace nose 5 for the inlet pipe 19 and the power cord 20 to pass through. The inlet pipe 19 passes through the through hole and connects to a gas supply device outside the furnace nose 5. This gas supply device is existing technology. There can be one through hole for the inlet pipe 19 and the power cord 20 to pass through, or separate through holes can be provided for each. Because the temperature inside the furnace nose 5 is high, the inlet pipe 19, the gas supply pipe 14, and the power cord 20 located inside the furnace nose 5 are all made of high-temperature resistant materials; this is existing technology.
[0036] The above are the basic embodiments of this utility model. Further improvements, optimizations, and limitations can be made based on the above to obtain the following embodiments:
[0037] Example 2
[0038] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1, but the improvement lies in:
[0039] like Figure 1 , 2 As shown, the upper end of the heating plate 6 is rotatably mounted on the upper part of the inner side of the furnace front wall 501, and the lower part of the inner side of the furnace front wall 501 is provided with an adjusting screw 10 that can control the tilt angle of the heating plate 6. This design allows the heating plate 6 to maintain a certain tilt angle during the operation of the device, and also allows the distance between the heating plate 6 and the furnace front wall 501 to be adjusted by adjusting the screw 10 when the device is stopped for cleaning after a period of operation. When the tilt angle of the heating plate 6 increases, the residue on its surface is easier to fall off, and the increased distance also makes it easier for cleaning tools to enter between the heating plate 6 and the furnace front wall 501 to remove the deposits on the furnace front wall 501 and the heating plate 6.
[0040] Specifically, in combination Figure 3 As shown, two first mounting seats 7 are horizontally spaced at the upper part of the inner side of the furnace front wall 501, and two first mounting blocks 15 are spaced at the upper edge of the heating plate 6. Each of the two first mounting blocks 15 has a first mounting hole for the rotating shaft on the first mounting seat 7 to pass through. The rotating shaft on the first mounting seat 7 is horizontally positioned. This structure enables a rotatable connection between the upper end of the heating plate 6 and the furnace front wall 501, ensuring the stability of the heating plate 6 when adjusting its tilt angle.
[0041] Second mounting blocks 16 are arranged on both sides of the heating plate 6, respectively. A second mounting seat 9 is arranged on the lower part of the inner side of the front wall 501 of the furnace. One end of an adjusting screw 10 is hinged to the second mounting seat 9. An installation hole is formed in the adjusting screw 10. A rotating shaft that can pass through the installation hole of the adjusting screw 10 is arranged on the second mounting seat 9, and the rotating shaft on the second mounting seat 9 is horizontally arranged. The other end of the adjusting screw 10 passes through a second installation hole 17 formed in the second mounting block 16. The second installation hole 17 is a strip-shaped hole. The design of the strip-shaped hole makes the adjusting screw 10 have a larger adjustment range and flexibility when adjusting the inclination angle of the heating plate 6, and can better adapt to different production requirements and cleaning requirements.
[0042] Front and rear nuts 11 and 12 that can be clamped on both sides of the heating plate 6 are arranged on the adjusting screw 10. By rotating the front and rear nuts 11 and 12, the length of the adjusting screw 10 extending out of the heating plate 6 can be conveniently adjusted, and the inclination angle of the heating plate 6 can be accurately controlled.
[0043] In actual use, the steel strip 4 passes through the inner cavity of the furnace nose 5 and is immersed in the zinc liquid 1. The heating plate 6 is powered to heat and warm up the inner cavity of the furnace nose 5, reducing the condensation and deposition of zinc vapor. The gas jet nozzle 13 blows away the dross at the junction between the steel strip 4 and the zinc liquid 1. When cleaning is required, the front and rear nuts 11 and 12 are loosened, the inclination angle of the heating plate 6 is increased by the adjusting screw 10, and the residual material on the heating plate 6 is more easily dropped, and at the same time, the cleaning tool can conveniently enter the space between the heating plate 6 and the front wall 501 of the furnace for cleaning.
[0044] Embodiment 3
[0045] This embodiment is an improved scheme based on embodiment 1, and the main structure is the same as that of embodiment 1. The improvement lies in that:
[0046] The upper end of the heating plate 6 is fixed to the upper part of the inner side of the front wall 501 of the furnace, and the lower part of the inner side of the front wall 501 of the furnace and the heating plate 6 are connected by a fixing rod. The inclination angle of the heating plate 6 is set to 45-75°. The heating plate 6 and the inner side of the front wall 501 of the furnace are fixedly connected by bolt connection or welding. Similarly, the fixing rod and the inner side of the front wall 501 of the furnace and the heating plate 6 are fixedly connected by bolt connection, welding, etc.
[0047] This structure of fixing the heating plate 6 to the inner side of the front wall 501 of the furnace cannot adjust the inclination angle of the heating plate 6, but in some scenarios that pay more attention to structural stability, it can ensure that the heating plate 6 stably plays the roles of heating and blocking zinc ash.
[0048] Embodiment 4
[0049] This embodiment is an improved scheme based on embodiment 1, and the main structure is the same as that of embodiment 1. The improvement lies in that:
[0050] As Figure 4 shown, the bottom of the heating plate 6 is provided with a plurality of connecting rods 18, which are arranged in a row and parallel to the liquid surface of the zinc liquid 1. The gas delivery pipe 14 is fixed to the end of the connecting rod 18 away from the heating plate 6, and the connecting rod 18 keeps a certain distance between the gas delivery pipe 14 and the heating plate 6. The gas delivery pipe 14 is fixed to the bottom of the heating plate 6 through the connecting rod 18, so as to ensure the stability of the gas delivery pipe 14 and the gas jet nozzle 13, and prevent them from shaking during the operation, thereby continuously and stably blowing out the gas flow to blow away the dross.
[0051] Embodiment 5
[0052] This embodiment is an improved scheme based on embodiment 1, and the main structure is the same as that of embodiment 1. The improvement lies in that:
[0053] As Figure 1 shown, the inner cavity of the furnace nose 5 is provided with a front overflow groove 502 close to the furnace front wall 501 and a rear overflow groove 504 close to the furnace rear wall 503. The front overflow groove 502 is a “pocket type cofferdam” with an open top and a closed bottom, which is surrounded by the furnace front wall 501, two furnace side walls 505, a front groove wall and a front groove bottom. The front groove wall is parallel to the furnace front wall 501, and the upper edge of the front overflow groove 502 wall is lower than the height of the zinc liquid 1 in the zinc plating pool 2. Similarly, the rear overflow groove 504 is also a “pocket type cofferdam” with an open top and a closed bottom, which is surrounded by the furnace rear wall 503, two furnace side walls 505, a rear groove wall and a rear groove bottom. The rear groove wall is parallel to the furnace rear wall 503, and the upper edge of the rear groove wall is lower than the height of the zinc liquid 1 in the zinc plating pool 2.
[0054] The front overflow groove 502 and the rear overflow groove 504 are both connected with a dross suction pump 8. During use, the dross suction pump 8 continuously sucks the zinc liquid 1 in the corresponding overflow groove through the dross suction pipe 21 to remove the dross and reduce the opportunity of contact between the dross and the steel belt 4. The zinc liquid 1 in the front overflow groove 502 and the rear overflow groove 504 is continuously circulated to avoid the dross staying on the surface of the zinc liquid of the steel belt 1 for a long time. The zinc liquid 1 sucked out by the dross suction pump 8 is sent to a filtering device for dross separation, and the separated zinc liquid 1 is re-delivered to the zinc plating pool 2.
[0055] In other embodiments of the utility model, the inner cavity of the furnace nose 5 is provided with an annular overflow groove connected with a dross suction pump 8, which can also collect and suck out the dross in the furnace nose 5 in time, reduce the opportunity of contact between the dross and the steel belt 4, and further improve the zinc plating quality of the steel belt 4.
[0056] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A furnace nose for hot-dip galvanizing steel strip, comprising an inclined furnace front wall (501), a furnace rear wall (503), and a furnace side wall (505) connecting the furnace front wall (501) and the furnace rear wall (503), wherein the steel strip (4) to be galvanized passes through the inner cavity of the furnace nose (5) and is immersed in molten zinc (1), characterized in that: An inclined heating plate (6) is installed on the side of the furnace front wall (501) facing the furnace rear wall (503). The inclination angle of the heating plate (6) is greater than that of the furnace front wall (501), and the vertical downward projection of the lower end of the heating plate (6) is located on the zinc liquid (1). A gas supply pipe (14) is provided at the bottom of the heating plate (6) and a jet nozzle (13) is installed. The airflow ejected by the jet nozzle (13) can cover the interface between the steel strip (4) and the surface of the zinc liquid (1).
2. The furnace nose for hot-dip galvanizing steel strip according to claim 1, characterized in that: The upper end of the heating plate (6) is rotatably installed on the upper part of the inner side of the furnace front wall (501), and the lower part of the inner side of the furnace front wall (501) is provided with an adjusting screw (10) that can control the tilt angle of the heating plate (6).
3. The furnace nose for hot-dip galvanizing steel strip according to claim 2, characterized in that: A first mounting base (7) is provided on the upper part of the inner side of the furnace front wall (501), and at least two first mounting blocks (15) are provided at intervals along the upper edge of the heating plate (6). Each of the two first mounting blocks (15) has a first mounting hole for the shaft on the first mounting base (7) to pass through.
4. The furnace nose for hot-dip galvanizing steel strip according to claim 2, characterized in that: A second mounting block (16) is provided on both sides of the heating plate (6), and a second mounting seat (9) is provided on the lower part of the inner side of the furnace front wall (501). One end of the adjusting screw (10) is hinged to the second mounting seat (9), and the other end passes through the second mounting hole (17) opened on the second mounting block (16). The adjusting screw (10) is provided with a front nut (11) and a rear nut (12) that can be clamped on both sides of the heating plate (6).
5. A furnace nose for hot-dip galvanizing steel strip according to claim 4, characterized in that: The second mounting hole (17) is a strip hole.
6. The furnace nose for hot-dip galvanizing steel strip according to claim 1, characterized in that: The upper end of the heating plate (6) is fixed to the upper part of the inner side of the furnace front wall (501), and the lower part of the inner side of the furnace front wall (501) and the heating plate (6) are connected by a fixing rod.
7. The furnace nose for hot-dip galvanizing steel strip according to claim 1, characterized in that: The tilt angle of the heating plate (6) is 45-75°.
8. The furnace nose for hot-dip galvanizing steel strip according to claim 1, characterized in that: The gas supply pipe (14) is horizontally arranged at the bottom of the heating plate (6), and there are multiple jet nozzles (13) spaced apart along the length of the gas supply pipe (14).
9. A furnace nose for hot-dip galvanizing steel strip according to claim 1, characterized in that: Multiple connecting rods (18) are spaced apart on the bottom side of the heating plate (6) facing the rear wall (503) of the furnace. The multiple connecting rods (18) are arranged in a row and the straight line is parallel to the liquid surface of the zinc liquid (1). The gas pipe (14) is fixed at the end of the connecting rod (18) away from the heating plate (6).
10. A furnace nose for hot-dip galvanizing steel strip according to claim 1, characterized in that: The inner cavity of the furnace nose (5) is provided with a front overflow trough (502) near the front wall (501) of the furnace and a rear overflow trough (504) near the rear wall (503) of the furnace. Both the front overflow trough (502) and the rear overflow trough (504) are connected to a scum suction pump (8). Alternatively, the inner cavity of the furnace nose (5) is provided with an annular overflow trough, which is connected to a scum suction pump (8).