Double-sided slag discharge furnace nose with movable slag discharge groove for hot galvanizing

Abstract

The invention discloses a hot galvanizing double-sided slag discharge furnace nose with a movable slag discharge groove, and relates to the technical field of metallurgical processing, the hot galvanizing double-sided slag discharge furnace nose comprises a furnace nose body arranged at the lower end of an annealing furnace chute, the furnace nose body is obliquely arranged in a molten zinc groove filled with molten zinc, and a fixed slag discharge groove overflow plate is arranged below the upper surface of an immersion section of the furnace nose body; and a fixed deslagging groove bottom plate is arranged at the bottom of the fixed deslagging groove overflow plate. Through the special structure of the upper surface fixed slag discharging groove and the lower surface movable slag discharging groove, the height and the level of an overflow plate of the upper surface slag discharging groove can be integrally adjusted through the furnace nose, meanwhile, the height and the level precision of an overflow plate of the lower surface slag discharging groove can be flexibly adjusted through a connecting arm, and the slag discharging effect and efficiency of the furnace nose are greatly improved; and particularly, a better zinc ash discharging effect is achieved for the production of hot-dip galvanized automobile outer plates, the production period of the furnace nose outer plates is prolonged, and the benefits of production enterprises are improved.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical processing, in particular to a double-sided slag discharge furnace nose with a movable slag discharge groove for hot-dip galvanizing. Background Art

[0002] Steel is the most widely used metal in the world. However, steel is easy to rust in air, water or soil, that is, it is easy to corrode. The following is the chemical equation for the corrosion of iron by water and oxygen in the air: 4Fe+2H2O+3O2=2(Fe2O3·H2O). Metal corrosion often affects the service life and effect of related machines or equipment. Sometimes, due to the continuous occurrence of corrosion, it may cause serious accidents to machines or equipment, bringing unexpected losses.

[0003] In order to reduce the corrosion of steel materials, people have adopted a variety of anti-corrosion methods, among which the method of coating a protective layer on the surface of steel is the most common method.

[0004] Since zinc has good corrosion resistance in the atmosphere and is a relatively cheap metal, the cost of protecting steel with a zinc layer is relatively low. This has also promoted the development of the hot-dip galvanizing industry and has become the most widely used metal rust prevention method.

[0005] Modern galvanized sheet production generally requires stamping process, which places high demands on the ductility of the strip steel. Therefore, the strip steel of the continuous hot-dip galvanizing unit must go through the annealing process before entering the zinc pot. In order to ensure that the strip steel is not oxidized under high temperature, it is generally protected by nitrogen and hydrogen mixed gas. The nose is the key equipment for the annealing furnace to penetrate into the zinc pot, which plays the role of sealing the annealing furnace. After the strip steel comes out of the annealing furnace, it is directly extended into the zinc pot to complete the galvanizing process. The temperature in the zinc pot is as high as 450℃. At this temperature, the zinc liquid will evaporate and condense in the furnace nose to form zinc ash. The zinc liquid and the strip steel will also produce zinc slag after the reaction (the zinc liquid in the zinc pot is composed of about 97% Zn and about 3% Al. The strip steel entering the zinc pot will bring a certain amount of Fe ions. These Fe ions will react chemically with Zn and Al ions to form a compound of Zn (20%) + Fe (35%) + Al (45%), namely zinc slag. These zinc slags have a higher Al content and are lighter than the zinc solution, so they will always float on the surface of the zinc liquid. Inside the furnace nose, since the zinc liquid is in a relatively closed space, the zinc ash and zinc slag floating on the surface will adhere to the surface of the strip steel, forming zinc ash prints and zinc slag prints. At present, the development of industry has led to an increasing requirement for the surface quality of galvanized sheets. For example, the galvanized sheets used for automobile outer panels are required to have defects that cannot be distinguished by the naked eye. Therefore, zinc ash prints, zinc slag prints, and the resulting indentations, scratches and other defects will seriously affect the surface quality of the strip steel and are not suitable for the needs of modern industry.

[0006] In order to effectively discharge the zinc ash and zinc slag in the furnace nose, the prior art has invented a furnace nose with a slag discharge structure. These furnace noses are all equipped with a slag discharge trough, which is used to connect a zinc pump to discharge the zinc ash around the strip steel in the furnace nose. However, through long-term use, it is found that due to the relatively large width of automobile plates, especially outer plates, the maximum bandwidth must exceed 1.8 meters. Due to structural limitations, the zinc ash on the lower surface of the single-sided slag discharge furnace nose must bypass the strip steel to be discharged through the slag discharge trough. Therefore, the problem of poor slag discharge often occurs, resulting in more zinc ash defects on the lower surface of the strip steel. For this reason, the prior art also has a fixed double-sided slag discharge furnace nose, but after the fixed double-sided slag discharge furnace nose is placed in the zinc pot, the temperature of the zinc pot reaches 460°C, and the deformation of the two overflow troughs at high temperature will seriously affect the overflow effect, resulting in poor slag discharge, and the zinc ash defects are still very serious. Summary of the invention

[0007] The object of the present invention is to provide a double-sided slag discharge furnace nose with a movable slag discharge groove for hot-dip galvanizing, so as to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions: A double-sided slag removal furnace nose with a movable slag removal trough for hot-dip galvanizing, comprising a furnace nose body arranged at the lower end of an annealing furnace chute, the furnace nose body being arranged obliquely in a zinc liquid tank filled with zinc liquid, a fixed slag removal trough overflow plate being arranged below the upper surface of the immersion section of the furnace nose body, a fixed slag removal trough bottom plate being arranged at the bottom of the fixed slag removal trough overflow plate, the fixed slag removal trough bottom plate and the side wall of the furnace nose body being combined to form a fixed slag removal trough, and a second zinc extraction component for extracting zinc liquid from the fixed slag removal trough being arranged at the bottom of the fixed slag removal trough; A movable slag discharge trough is provided near the lower surface of the immersed section of the furnace nose body. The movable slag discharge trough is welded together by a movable slag discharge trough overflow plate, a movable slag discharge trough side wall, a movable slag discharge trough bottom plate and a slag discharge trough side plate. A first zinc extraction component for extracting zinc liquid from the movable slag discharge trough is also provided at the bottom of the movable slag discharge trough.

[0009] As a further solution of the present invention: the second zinc extraction assembly includes a second slag discharge pipe, the second slag discharge pipe is connected to a position on one side of the bottom of the fixed slag discharge trough, a second zinc extraction pump is installed on the second slag discharge pipe, a second zinc extraction pipeline is connected to the other side of the bottom of the fixed slag discharge trough, and a second liquid level well is provided at one end of the second zinc extraction pipeline away from the fixed slag discharge trough.

[0010] As a further solution of the present invention: the first zinc extraction component includes a first zinc extraction pipe, the first zinc extraction pipe is connected to a position on one side of the bottom of the movable slag discharge trough, a first liquid level well is provided at one end of the first zinc extraction pipe away from the movable slag discharge trough, a first slag discharge pipe is connected to the other side of the bottom of the movable slag discharge trough, a first zinc extraction pump is installed on the first slag discharge pipe, and adjustment components for adjusting the angle and height of the movable slag discharge trough are provided on both sides of the furnace nose body.

[0011] As a further solution of the present invention: the adjustment assembly includes a second connecting arm and a first connecting arm, the second connecting arm is rotatably connected to the first zinc extraction pipe, the first connecting arm is rotatably connected to the first slag discharge pipe, the upper ends of the first connecting arm and the second connecting arm are provided with strip adjustment grooves, both sides of the furnace nose body are provided with at least two connecting bolts for cooperating with the strip adjustment grooves, the lower end of the first connecting arm is fixedly connected with a connecting chassis, the upper end of the connecting chassis is provided with an adjustment arc groove, the first zinc extraction pipe and the first slag discharge pipe are provided with locking assemblies for cooperating with the adjustment arc groove to lock the angle of the first connecting arm.

[0012] As a further solution of the present invention: the locking assembly includes a bolt rod, which is inserted into the adjusting arc groove, and both ends of the bolt rod are fixedly connected to the first zinc extraction pipe and the first slag discharge pipe respectively by using supports, and the bolt rod is threadedly connected with locking nuts at positions on both sides of the connecting chassis.

[0013] As a further solution of the present invention: the top height of the overflow plate of the movable slag discharge chute is lower than the side wall of the movable slag discharge chute and the side plate of the slag discharge chute.

[0014] As a further solution of the present invention: the installation height of the overflow plate of the movable slag discharge chute and the overflow plate of the fixed slag discharge chute is 2-5 mm lower than the upper surface of the zinc liquid inside the furnace nose body.

[0015] As a further solution of the present invention: a gap for passing the strip steel is provided between the movable slag discharge chute and the fixed slag discharge chute.

[0016] As a further solution of the present invention: the furnace nose body is a box body with upper and lower openings formed by splicing and welding steel plates.

[0017] As a further solution of the present invention: the upper openings of the first liquid level well and the second liquid level well are both higher than the zinc liquid surface.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can work for a long time in a zinc pot at a temperature of up to 460°C. The furnace nose can effectively pump out the zinc liquid on the upper and lower surfaces of the furnace nose body. The immersion section of the furnace nose body is equipped with upper and lower slag discharge trough structures, wherein the upper surface is a fixed slag discharge trough and the lower surface is a movable slag discharge trough structure. This structure well solves the shortcomings of the fixed double-sided slag discharge furnace nose. After the furnace nose enters the zinc pot, even if there is thermal deformation, the level of the upper surface fixed slag discharge trough can be adjusted through the furnace nose as a whole, and then the level of the movable slag discharge trough can be adjusted, which well ensures the level of the upper and lower slag discharge troughs, so that the slag discharge effect of the furnace nose is optimized.

[0019] 2. The present invention has a special structure of a fixed slag discharge trough on the upper surface and a movable slag discharge trough on the lower surface. The height and level of the overflow plate of the upper surface slag discharge trough can be adjusted through the overall furnace nose. At the same time, the height and horizontal accuracy of the overflow plate of the lower surface slag discharge trough can be flexibly adjusted through the connecting arm, which greatly improves the slag discharge effect and efficiency of the furnace nose, especially for the production of hot-dip galvanized automobile outer panels, has a better zinc ash discharge effect and prolongs the production cycle of the furnace nose outer panels, thereby improving the efficiency of the production enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the furnace nose body in the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of the movable slag discharge chute in the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the regulating component in the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the present invention when it is applied.

[0025] Wherein: 1. annealing furnace chute; 2. furnace nose body; 3. connecting bolts; 4. slag discharge chute side plate; 5. first connecting arm; 6. first zinc extraction pump; 7. first slag discharge pipe; 8. second connecting arm; 9. first zinc extraction pipeline; 10. first liquid level well; 11. movable slag discharge chute overflow plate; 12. movable slag discharge chute; 13. movable slag discharge chute side wall; 14. movable slag discharge chute bottom plate; 15. fixed slag discharge chute bottom plate; 16. fixed slag discharge chute overflow plate; 17. fixed slag discharge chute; 18. strip steel; 19. zinc liquid; 20. sinking roller; 21. second zinc extraction pump; 22. second slag discharge pipe; 23. second zinc extraction pipeline; 24. second liquid level well; 25. zinc liquid trough; 26. strip adjustment trough; 27. bolt rod; 28. locking nut; 29. ​​adjustment arc trough; 30. connecting chassis. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5 In an embodiment of the present invention, a double-sided slag removal furnace nose with a movable slag removal trough for hot-dip galvanizing includes a furnace nose body 2 arranged at the lower end of an annealing furnace chute 1, wherein the furnace nose body 2 is a box body with upper and lower openings formed by splicing and welding steel plates; the box body can withstand corrosion from high-temperature zinc liquid and can be used for a long time. The main function of the box body is to use it to penetrate into the zinc liquid tank 25 and use the zinc liquid to seal the annealing furnace.

[0028] See also Figure 1 and Figure 5 The furnace nose body 2 is tiltedly arranged in a zinc liquid tank 25 filled with zinc liquid 19, a fixed slag discharge tank overflow plate 16 is arranged below the upper surface of the immersion section of the furnace nose body 2, and a fixed slag discharge tank bottom plate 15 is arranged at the bottom of the fixed slag discharge tank overflow plate 16, the fixed slag discharge tank overflow plate 16, the fixed slag discharge tank bottom plate 15 and the side wall of the furnace nose body 2 are combined to form a fixed slag discharge tank 17, and a second zinc extraction component for extracting the zinc liquid in the fixed slag discharge tank 17 is arranged at the bottom of the fixed slag discharge tank 17; the second zinc extraction component includes a second slag discharge pipe 22, and the second slag discharge pipe 22 is connected to the fixed discharge tank. A second zinc extraction pump 21 is installed on the second slag discharge pipe 22 at a position on one side of the bottom of the slag trough 17, and a second zinc extraction pipeline 23 is connected to the other side of the bottom of the fixed slag discharge trough 17. A second liquid level well 24 is provided at the end of the second zinc extraction pipeline 23 away from the fixed slag discharge trough 17; the height of the top of the overflow plate 16 of the fixed slag discharge trough is 2-5mm lower than the upper surface of the zinc liquid 19 in the furnace nose body 2, so that the zinc liquid can flow into the fixed slag discharge trough 17 through the overflow plate 16 of the fixed slag discharge trough, and then the zinc liquid 19 and zinc ash in the fixed slag discharge trough 17 are discharged to the outside of the furnace nose body 2 through the second zinc extraction pump 21.

[0029] See also Figure 1-Figure 3 and Figure 5A movable slag discharge trough 12 is provided near the lower surface of the immersion section of the furnace nose body 2. The movable slag discharge trough 12 is welded by a movable slag discharge trough overflow plate 11, a movable slag discharge trough side wall 13, a movable slag discharge trough bottom plate 14 and a slag discharge trough side plate 4. A first zinc extraction component for extracting zinc liquid from the movable slag discharge trough 12 is also provided at the bottom of the movable slag discharge trough 12; the top height of the movable slag discharge trough overflow plate 11 is lower than the movable slag discharge trough side wall 13 and the slag discharge trough side plate 4; ... The installation height of the flow plate 11 and the fixed slag discharge trough overflow plate 16 is 2-5mm lower than the upper surface of the zinc liquid 19 inside the furnace nose body 2; the height of the top of the movable slag discharge trough overflow plate 11 is lower than the movable slag discharge trough side wall 13 and the slag discharge trough side plate 4. When installed, its height is 2-5mm lower than the upper surface of the zinc liquid 19 in the furnace nose body 2, so that the zinc liquid 19 can flow into the movable slag discharge trough 12 through the movable slag discharge trough overflow plate 11, and then the zinc liquid 19 and zinc ash in the trough are discharged to the outside of the furnace nose through the first zinc extraction pump 6.

[0030] See also Figure 1-Figure 4 The first zinc extraction component includes a first zinc extraction pipeline 9, which is connected to a position on one side of the bottom of a movable slag discharge trough 12, and a first liquid level well 10 is provided at one end of the first zinc extraction pipeline 9 away from the movable slag discharge trough 12, and a first slag discharge pipe 7 is connected to the other side of the bottom of the movable slag discharge trough 12, and a first zinc extraction pump 6 is installed on the first slag discharge pipe 7, and adjustment components for adjusting the angle and height of the movable slag discharge trough 12 are provided on both sides of the furnace nose body 2; the upper end openings of the first liquid level well 10 and the second liquid level well 24 are both higher than the liquid level of the zinc liquid 19; the movable slag discharge trough 12 can be fixed to the furnace nose body 2 by the connecting bolts 3 through the first connecting arm 5 and the second connecting arm 8, and after the movable slag discharge trough 12 is installed, the height and level of the movable slag discharge trough 12 can be adjusted by the connecting bolts 3 on the two first connecting arms 5 and the second connecting arm 8, so that the level of the overflow plate 11 of the movable slag discharge trough reaches the required accuracy.

[0031] See also Figure 3-Figure 4The adjustment component includes a second connecting arm 8 and a first connecting arm 5, the second connecting arm 8 is rotatably connected to the first zinc extraction pipe 9, the first connecting arm 5 is rotatably connected to the first slag discharge pipe 7, the upper ends of the first connecting arm 5 and the second connecting arm 8 are both provided with a strip-shaped adjustment groove 26, both sides of the furnace nose body 2 are provided with at least two connecting bolts 3 for cooperating with the strip-shaped adjustment groove 26, the lower end of the first connecting arm 5 is fixedly connected with a connecting chassis 30, the upper end of the connecting chassis 30 is provided with an adjustment arc groove 29, the first zinc extraction pipe 9 and the first slag discharge pipe 7 are both provided with a locking component for cooperating with the adjustment arc groove 29 to lock the angle of the first connecting arm 5; the locking The component includes a bolt rod 27, which is inserted into an adjusting arc groove 29. Both ends of the bolt rod 27 are fixedly connected to the first zinc extraction pipe 9 and the first slag discharge pipe 7 by using supports. The bolt rod 27 is located on both sides of the connecting chassis 30 and is threadedly connected with locking nuts 28. When adjusting the height of the movable slag discharge groove 12, the connecting bolt 3 can be loosened first, and then the first connecting arm 5 and the second connecting arm 8 are slid for adjustment. After the adjustment is completed, the connecting bolt 3 can be tightened. When the angle of the movable slag discharge groove 12 needs to be adjusted, the locking nut 28 can be loosened first, and then the movable slag discharge groove 12 is rotated to adjust the angle. After the adjustment is completed, the two locking nuts 28 can be locked.

[0032] A gap for passing the steel strip 18 is provided between the movable slag discharge chute 12 and the fixed slag discharge chute 17 ; the steel strip 18 can pass through the gap between the movable slag discharge chute 12 and the fixed slag discharge chute 17 by the guidance of the sinking roller 20 .

[0033] The working principle of the present invention is: through the special structure of the fixed slag discharge trough 17 on the upper surface and the movable slag discharge trough 12 on the lower surface, the height and level of the overflow plate of the upper surface slag discharge trough can be adjusted as a whole through the furnace nose body 2, and at the same time, the height and horizontal accuracy of the overflow plate 11 of the movable slag discharge trough on the lower surface can be flexibly adjusted through the connecting arm. When adjusting the height of the movable slag discharge trough 12, the connecting bolt 3 can be loosened first, and then the first connecting arm 5 and the second connecting arm 8 can be slid for adjustment. After the adjustment is completed, the connecting bolt 3 can be tightened. When the angle of the movable slag discharge trough 12 needs to be adjusted, the locking nut 28 can be loosened first, and then the movable slag discharge trough 12 can be rotated to adjust the angle. After the adjustment is completed, the two locking nuts 28 can be locked.

[0034] The arrangement of the fixed slag discharge trough overflow plate 16 and the movable slag discharge trough overflow plate 11 allows the zinc liquid 19 to enter the movable slag discharge trough 12 and the fixed slag discharge trough 17, and then the zinc liquid 19 and zinc ash in the trough are pumped out by the corresponding zinc pump, and discharged to the outside of the furnace nose. The slag discharge effect and efficiency of the furnace nose are greatly improved, especially for the production of hot-dip galvanized automobile outer panels, it has a better zinc ash discharge effect and prolongs the production cycle of the furnace nose outer panels, thereby improving the efficiency of the production enterprise.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Although this specification is described in accordance with the implementation modes, not every implementation mode includes only one technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A double-sided slag removal furnace nose with a movable slag removal trough for hot-dip galvanizing, comprising a furnace nose body (2) arranged at the lower end of an annealing furnace chute (1), wherein the furnace nose body (2) is arranged obliquely in a zinc liquid tank (25) containing zinc liquid (19); Features: A fixed slag discharge trough overflow plate (16) is provided below the upper surface of the submerged section of the furnace nose body (2); a fixed slag discharge trough bottom plate (15) is provided at the bottom of the fixed slag discharge trough overflow plate (16); the fixed slag discharge trough overflow plate (16), the fixed slag discharge trough bottom plate (15) and the side wall of the furnace nose body (2) are combined to form a fixed slag discharge trough (17); a second zinc extraction component for extracting zinc liquid from the fixed slag discharge trough (17) is provided at the bottom of the fixed slag discharge trough (17); A movable slag discharge trough (12) is provided at a position close to the lower surface of the immersion section of the furnace nose body (2); the movable slag discharge trough (12) is welded together by an movable slag discharge trough overflow plate (11), a movable slag discharge trough side wall (13), a movable slag discharge trough bottom plate (14) and a slag discharge trough side plate (4); and a first zinc extraction component for extracting zinc liquid from the movable slag discharge trough (12) is also provided at the bottom of the movable slag discharge trough (12).

2. A double-sided slag removal furnace nose with a movable slag removal groove for hot dip galvanizing according to claim 1, It is characterized in that The second zinc extraction component comprises a second slag discharge pipe (22), the second slag discharge pipe (22) being connected to a position on one side of the bottom of the fixed slag discharge trough (17), a second zinc extraction pump (21) being installed on the second slag discharge pipe (22), a second zinc extraction pipeline (23) being connected to the other side of the bottom of the fixed slag discharge trough (17), and a second liquid level well (24) being provided at one end of the second zinc extraction pipeline (23) away from the fixed slag discharge trough (17).

3. A double-sided slag removal furnace nose with a movable slag removal groove for hot-dip galvanizing according to claim 2, It is characterized in that The first zinc extraction component comprises a first zinc extraction pipeline (9), the first zinc extraction pipeline (9) is connected to a position on one side of the bottom of the movable slag discharge trough (12), a first liquid level well (10) is provided at one end of the first zinc extraction pipeline (9) away from the movable slag discharge trough (12), a first slag discharge pipe (7) is connected to a position on the other side of the bottom of the movable slag discharge trough (12), a first zinc extraction pump (6) is installed on the first slag discharge pipe (7), and adjustment components for adjusting the angle and height of the movable slag discharge trough (12) are provided on both sides of the furnace nose body (2).

4. A double-sided slag removal furnace nose with a movable slag removal groove for hot dip galvanizing according to claim 3, It is characterized in that The adjustment assembly comprises a second connecting arm (8) and a first connecting arm (5), wherein the second connecting arm (8) is rotatably connected to a first zinc extraction pipe (9), and the first connecting arm (5) is rotatably connected to a first slag discharge pipe (7). The upper ends of the first connecting arm (5) and the second connecting arm (8) are both provided with a strip-shaped adjustment groove (26), and both sides of the furnace nose body (2) are provided with at least two connecting bolts (3) for cooperating with the strip-shaped adjustment groove (26). The lower end of the first connecting arm (5) is fixedly connected with a connecting chassis (30), and the upper end of the connecting chassis (30) is provided with an adjustment arc groove (29), and the first zinc extraction pipe (9) and the first slag discharge pipe (7) are both provided with a locking assembly for cooperating with the adjustment arc groove (29) to lock the angle of the first connecting arm (5).

5. A double-sided slag removal furnace nose with a movable slag removal groove for hot dip galvanizing according to claim 4, It is characterized in that The locking assembly comprises a bolt rod (27), wherein the bolt rod (27) is inserted into the adjusting arc groove (29), and the two ends of the bolt rod (27) are respectively fixedly connected to the first zinc extraction pipe (9) and the first slag discharge pipe (7) by means of supports, and the bolt rod (27) is threadedly connected to the positions on both sides of the connection chassis (30) with locking nuts (28).

6. A double-sided slag removal furnace nose with a movable slag removal groove for hot dip galvanizing according to claim 1, It is characterized in that The top height of the movable slag discharge chute overflow plate (11) is lower than the movable slag discharge chute side wall (13) and the slag discharge chute side plate (4).

7. A double-sided slag removal furnace nose with a movable slag removal groove for hot dip galvanizing according to claim 6, It is characterized in that The installation height of the movable slag discharge chute overflow plate (11) and the fixed slag discharge chute overflow plate (16) is 2-5 mm lower than the upper surface of the zinc liquid (19) inside the furnace nose body (2).

8. A double-sided slag removal furnace nose with a movable slag removal groove for hot dip galvanizing according to claim 1, It is characterized in that A gap for passing the strip steel (18) is provided between the movable slag discharge chute (12) and the fixed slag discharge chute (17).

9. A double-sided slag removal furnace nose with a movable slag removal groove for hot dip galvanizing according to claim 1, It is characterized in that The furnace nose body (2) is a box body with upper and lower openings formed by splicing and welding steel plates.

10. A double-sided slag removal furnace nose with a movable slag removal groove for hot dip galvanizing according to claim 3, It is characterized in that The upper openings of the first liquid level well (10) and the second liquid level well (24) are both higher than the liquid level of the zinc liquid (19).

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