Hot galvanizing furnace for hot galvanizing processing

Abstract

The hot galvanizing furnace comprises a protective shell, the top of the protective shell is fixedly connected with a top frame, a round hole is formed in the center of the top frame, the top frame is movably connected with a zinc pot in a clamped mode through the round hole, the zinc pot is located in the protective shell, an opening is formed in the top of the zinc pot, and a notch is formed in one side of the protective shell. The notch penetrates through the side wall of the protective shell, a gas conveying pipe capable of moving up and down along the notch is arranged on the inner side of the notch, the end, close to the center of the protective shell, of the gas conveying pipe communicates with an annular gas pipe, and the zinc pot is located in the center of the annular gas pipe. Through cooperative use of an electric push rod and a connecting plate, a gas conveying pipe can move up and down in a notch, the position of a heating point of the device can be conveniently changed, different positions of a zinc pot can be conveniently heated, the top and the bottom of the zinc pot can be rapidly heated, the zinc block melting efficiency of the zinc pot is improved, and the practicability of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of hot-dip galvanizing furnaces, in particular to a hot-dip galvanizing furnace for hot-dip galvanizing processing. Background Art

[0002] Hot-dip galvanizing is a metal anti-corrosion process that makes molten metal react with an iron matrix to produce an alloy layer, thereby combining the matrix and the coating. The pretreated steel parts are immersed in molten zinc liquid to form a zinc layer on their surface. Hot-dip galvanizing has many advantages, such as excellent anti-corrosion performance, which can protect the metal for a long time in harsh environments; the zinc layer has strong adhesion and is not easy to fall off; it has a long service life and low subsequent maintenance costs. Hot-dip galvanizing is widely used in many fields such as construction, transportation, electricity, communications, agriculture, etc., such as common highway guardrails, power towers, and building steel structures.

[0003] Hot-dip galvanizing furnace is a common equipment in hot-dip galvanizing process, which is usually made of high temperature resistant materials to withstand the high temperature of zinc liquid. Generally speaking, the structure of hot-dip galvanizing furnace includes furnace body, heating device, temperature control system, zinc liquid circulation system and other parts. The furnace body needs to have good thermal insulation performance, reduce heat loss, and ensure the stability of the temperature in the furnace. The heating device can be electric heating, gas heating or fuel heating, etc., to provide enough heat for zinc liquid to keep it in a molten state. In the prior art, Chinese patent CN216765023U discloses a hot-dip galvanizing furnace for hot-dip galvanizing process, which relates to the field of hot-dip galvanizing process, including a zinc pot for holding zinc liquid, the bottom of the zinc pot is provided with a combustion port for heating the zinc pot, and also includes a boiler body, the zinc pot is placed inside the boiler body, the inner bottom wall of the boiler body is fixedly connected with a support roller, the upper end of the support roller is rotatably connected with the zinc pot, a stirring rod is provided in the zinc pot, and a stirring assembly is connected to the zinc pot to stir the zinc liquid by driving the zinc pot to rotate relative to the stirring rod. The present application has the effect of facilitating the temperature of the zinc liquid in the zinc pot to be more uniform.

[0004] However, the hot-dip galvanizing furnace for hot-dip galvanizing provided in the above technical solution still has many disadvantages in actual use. For example, the position of the heating point is fixed and located at the bottom of the zinc pot, so that when the zinc block is heated, the top of the zinc pot is heated slowly, which affects the melting efficiency of the entire zinc block and leads to poor practicality. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In order to solve the problem that the heating point of the hot-dip galvanizing furnace for hot-dip galvanizing processing proposed in the above background technology is fixed and located at the bottom of the zinc pot, so that when the zinc block is heated, the top of the zinc pot is heated slowly, affecting the melting efficiency of the entire zinc block and resulting in poor practicality, the present invention adopts the following technical solution.

[0007] A hot-dip galvanizing furnace for hot-dip galvanizing processing comprises a protective shell, a top frame is fixedly connected to the top of the protective shell, a circular hole is opened in the center of the top frame, a zinc pot is movably connected to the top frame through the circular hole, the zinc pot is located inside the protective shell, and an opening is provided on the top of the zinc pot, a notch is opened on one side of the protective shell, and the notch passes through the side wall of the protective shell, an air pipe that can move up and down along the notch is arranged on the inner side of the notch, an annular air pipe is connected to one end of the air pipe close to the center of the protective shell, and the zinc pot is located at the center of the annular air pipe, when the air pipe moves up and down, the annular air pipe moves up and down along the vertical center line of the zinc pot, a plurality of flame spray nozzles are fixedly connected to the inner side of the annular air pipe, the insides of the annular air pipes of the flame spray nozzles are connected, and the plurality of flame spray nozzles are evenly distributed in an arc shape with respect to the vertical center line of the zinc pot.

[0008] Preferably, a protective ring is fixedly connected to the outer side of the gas delivery pipe, connecting plates are provided on both sides of the protective ring, an electric push rod is fixedly connected to the top of the connecting plate, and the electric push rod is fixedly connected to the top frame.

[0009] Preferably, the protective ring is coaxially arranged with the gas pipe, the connecting plate and the protective ring form an integrated structure, the connecting plate is symmetrical about the central axis of the protective ring, and the central axis of the electric push rod coincides with the vertical center line of the connecting plate.

[0010] Preferably, the inner wall of the protective shell is provided with a plurality of slide grooves, the length of the slide grooves matches the length of the notch, the plurality of slide grooves are evenly distributed in an arc shape about the vertical center line of the protective shell, and the annular air pipe is connected to the slide grooves by a slider.

[0011] Preferably, a motor is fixedly connected to the inside of the top frame, a gear is fixedly connected to the top of the motor, a gear ring is provided on one side of the gear, the outer side of the gear ring is meshed with the outer teeth of the gear, a plurality of scrapers are fixedly connected to the bottom of the gear ring, the outer sides of the plurality of scrapers are fitted with the inner wall of the zinc pot, the plurality of scrapers are evenly distributed in a ring shape about the central axis of the gear ring, and the central axis of the gear ring coincides with the central axis of the zinc pot.

[0012] Preferably, the top cover of the zinc pot is provided with an annular groove, the top of the annular groove is rotatably connected with a snap ring, the top of the snap ring is fixedly connected to the bottom of the gear ring, and the central axis of the snap ring coincides with the central axis of the gear ring.

[0013] Preferably, a smoke exhaust pipe is threadedly connected to the top of one side of the protective shell, the smoke exhaust pipe is communicated with the interior of the protective shell, an exhaust fan is provided at the end of the smoke exhaust pipe, and an air inlet mesh port is provided at the bottom of one side of the protective shell.

[0014] Preferably, a plurality of reinforcing strips are provided on the outside of the protective shell, and an integrated structure is formed between the reinforcing strips and the protective shell. The outer side of the reinforcing strips is a curved surface structure, and the plurality of reinforcing strips are evenly distributed in an arc shape about the vertical center line of the protective shell. A plurality of feet are fixedly connected to the bottom of the protective shell, and the plurality of feet are evenly distributed in a ring shape about the vertical center line of the protective shell.

[0015] Preferably, a protective cover is provided on the top of the top frame, the protective cover is rotatably connected to the top frame via a hinge, and the outer dimension of the protective cover matches the outer dimension of the top frame.

[0016] Beneficial Effects Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can make the gas pipe move up and down in the notch by using the electric push rod and the connecting plate, which is convenient for changing the position of the heating point of the device and heating different positions of the zinc pot, so that the top and bottom of the zinc pot can be heated quickly, thereby improving the efficiency of the zinc pot in melting the zinc block and improving the practicality of the device. The flame nozzles are evenly distributed on the outside of the zinc pot, so that the zinc pot is heated evenly. The use of the slide groove and the slider can play a guiding role when the annular air pipe moves up and down, thereby ensuring the stability of the annular air pipe moving up and down.

[0017] 2. The present invention can connect the device to an external gas pipeline through a gas pipeline, and the protective ring can protect the connection between the gas pipeline and the gas pipeline. The gas pipeline can be used to transport external gas to the annular gas pipe, and then to the flame nozzle through the annular gas pipe. By using an external igniter and a notch, the flame nozzle can be ignited to heat the zinc pot in the center of the annular gas pipe.

[0018] 3. The present invention starts the motor to rotate the gear, which drives the gear ring to rotate, so that the scraper turns over in the zinc pot, which is convenient for stirring the zinc blocks in the zinc pot and accelerating the melting efficiency of the zinc blocks. At the same time, the scraper fits the inner wall of the zinc pot and can scrape off the zinc blocks attached to the inner wall of the zinc pot, thereby improving the quality of the zinc blocks melted by the device.

[0019] 4. The present invention can extract smoke from the protective shell by using the smoke exhaust pipe and the exhaust fan in coordination, and can facilitate the entry of outside air into the protective shell by using the air inlet mesh and the slot, so as to provide oxygen for combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the protective shell and the zinc pot of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the protective shell and the annular air pipe of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the annular trachea of ​​the present invention; Figure 6 It is a schematic diagram of the overall front view structure of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the gear ring and the scraper of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the top frame and the zinc pot of the present invention.

[0021] The corresponding relationship between the illustrations and component names in the figure is as follows: 1. Protective shell; 2. Top frame; 3. Zinc pot; 4. Notch; 5. Gas pipe; 6. Annular gas pipe; 7. Flame nozzle; 8. Protective ring; 9. Connecting plate; 10. Electric push rod; 11. Slide groove; 12. Motor; 13. Gear; 14. Gear ring; 15. Scraper; 16. Ring groove; 17. Snap ring; 18. Smoke exhaust pipe; 19. Exhaust fan; 20. Air inlet mesh; 21. Reinforcement strip; 22. Foot pad; 23. Protective cover. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0025] See also Figure 1-8An embodiment of the present invention is as follows: a hot-dip galvanizing furnace for hot-dip galvanizing processing comprises a protective shell 1, a plurality of reinforcing strips 21 are arranged on the outer side of the protective shell 1, the reinforcing strips 21 and the protective shell 1 form an integrated structure, the reinforcing strips 21 and the protective shell 1 are an integrated structure, so that the reinforcing strips 21 are not easy to fall off, the outer side of the reinforcing strips 21 is an arc surface structure, the plurality of reinforcing strips 21 are evenly distributed in an arc shape about the vertical center line of the protective shell 1, the bottom of the protective shell 1 is fixedly connected with a plurality of pads 22, and the plurality of pads 22 are evenly distributed in a ring shape about the vertical center line of the protective shell 1.

[0026] The device can be placed on the external horizontal plane by the foot 22 to prevent the wear between the bottom of the protective shell 1 and the external horizontal plane. The reinforcement strip 21 can enhance the strength of the protective shell 1, so that the protective shell 1 is not easily deformed when the device is used for a long time. The top of the protective shell 1 is fixedly connected with a top frame 2, and a protective cover 23 is arranged on the top of the top frame 2. The protective cover 23 is rotatably connected to the top frame 2 through a hinge. The outer size of the protective cover 23 matches the outer size of the top frame 2. A round hole is opened in the center of the top frame 2, and the top frame 2 is movably connected with a zinc pot 3 through the round hole. The protective cover 23 can be turned over by the hinge, so that the top frame 2 can be opened and the zinc block can be placed in the zinc pot 3. After the use of the device is completed, the protective cover 23 can be closed by the hinge to prevent external dust from entering the zinc pot 3. The zinc pot 3 is located inside the protective shell 1, and an opening is provided at the top of the zinc pot 3. A notch 4 is provided on one side of the protective shell 1, and the notch 4 runs through the side wall of the protective shell 1. A gas pipe 5 that can move up and down along the notch 4 is provided on the inner side of the notch 4. One end of the gas pipe 5 close to the center of the protective shell 1 is connected with an annular gas pipe 6, and the zinc pot 3 is located at the center of the annular gas pipe 6. When the gas pipe 5 moves up and down, the annular gas pipe 6 moves up and down along the vertical center line of the zinc pot 3. A plurality of flamethrowers 7 are fixedly connected to the inner side of the annular gas pipe 6. The device can be connected to an external gas pipeline through the gas pipe 5. The external gas can be transported to the annular gas pipe 6 by the gas pipe 5, and then transported to the flamethrower 7 through the annular gas pipe 6. By using an external igniter and the notch 4 in coordination, the flamethrower 7 can be ignited to heat the zinc pot 3 in the center of the annular gas pipe 6.

[0027] The inside of the annular air pipe 6 of the flame spray nozzle 7 is connected, and the multiple flame spray nozzles 7 are evenly distributed in an arc shape about the vertical center line of the zinc pot 3. The flame spray nozzles 7 are evenly distributed on the outside of the zinc pot 3, so that the zinc pot 3 is heated evenly.

[0028] In this embodiment, a protective ring 8 is fixedly connected to the outer side of the gas supply pipe 5, and connecting plates 9 are provided on both sides of the protective ring 8. An electric push rod 10 is fixedly connected to the top of the connecting plate 9. The electric push rod 10 is fixedly connected to the top frame 2. The connecting plate 9 and the protective ring 8 form an integrated structure. The protective ring 8 can protect the connection between the gas supply pipe 5 and the gas pipeline, ensure the stability of the connection, and is conducive to ensuring the stability of the flame spraying of the flamethrower 7. In addition, the integrated setting of the protective ring 8 and the connecting plate 9 makes it difficult for the connecting plate 9 and the protective ring 8 to fall off.

[0029] In this embodiment, the protective ring 8 is coaxially arranged with the gas pipe 5, the connecting plate 9 is symmetrical about the central axis of the protective ring 8, and the central axis of the electric push rod 10 coincides with the vertical center line of the connecting plate 9. Through the coordinated use of the electric push rod 10 and the connecting plate 9, the gas pipe 5 can be moved up and down in the slot 4, which is convenient for changing the position of the heating point of the device and facilitating heating of different positions of the zinc pot 3, so that the top and bottom of the zinc pot 3 can be quickly heated, thereby improving the efficiency of the zinc pot 3 in melting zinc blocks and improving the practicability of the device.

[0030] In this embodiment, a plurality of slide grooves 11 are provided on the inner wall of the protective shell 1, the length of the slide grooves 11 matches the length of the notch 4, and the plurality of slide grooves 11 are evenly distributed in an arc shape about the vertical center line of the protective shell 1. The annular air pipe 6 is connected to the slide grooves 11 by a slider. The coordinated use of the slide grooves 11 and the slider can play a guiding role when the annular air pipe 6 moves up and down, thereby ensuring the stability of the annular air pipe 6 in moving up and down.

[0031] In this embodiment, a smoke exhaust pipe 18 is threadedly connected to the top of one side of the protective shell 1, and the smoke exhaust pipe 18 is communicated with the interior of the protective shell 1. An exhaust fan 19 is provided at the end of the smoke exhaust pipe 18, and an air inlet mesh port 20 is provided at the bottom of one side of the protective shell 1. The smoke exhaust pipe 18 and the exhaust fan 19 are used in combination to extract the smoke inside the protective shell 1. The use of the air inlet mesh port 20 and the slot 4 can facilitate the entry of outside air into the interior of the protective shell 1, thereby providing oxygen for combustion.

[0032] In this embodiment, a motor 12 is fixedly connected to the inside of the top frame 2, a gear 13 is fixedly connected to the top of the motor 12, a gear ring 14 is provided on one side of the gear 13, the outer side of the gear ring 14 is meshed with the outer tooth pattern of the gear 13, a plurality of scrapers 15 are fixedly connected to the bottom of the gear ring 14, the outer sides of the plurality of scrapers 15 are in contact with the inner wall of the zinc pot 3, the plurality of scrapers 15 are evenly distributed in a ring shape about the central axis of the gear ring 14, and the central axis of the gear ring 14 coincides with the central axis of the zinc pot 3.

[0033] Starting the motor 12 causes the gear 13 to rotate, driving the gear ring 14 to rotate, causing the scraper 15 to flip in the zinc pot 3, so as to facilitate stirring of the zinc blocks in the zinc pot 3 and accelerate the melting efficiency of the zinc blocks. At the same time, the scraper 15 fits the inner wall of the zinc pot 3 and can scrape off the zinc blocks attached to the inner wall of the zinc pot 3, thereby improving the quality of the zinc blocks melted by the device. The top frame 2 is made of heat-insulating material. When using the device, it can protect the motor 12, gear 13, gear ring 14 and other components, and also prevent external components from touching the gear 13 and gear ring 14.

[0034] In this embodiment, the top cover of the zinc pot 3 is provided with an annular groove 16, and the top of the annular groove 16 is rotatably connected with a snap ring 17. The top of the snap ring 17 is fixedly connected to the bottom of the ring gear 14, and the center axis of the snap ring 17 coincides with the center axis of the ring gear 14. The coordinated use of the annular groove 16 and the snap ring 17 can ensure the stability of the rotation of the packaging ring gear 14.

[0035] Working principle: When using the device, firstly, the device can be placed on the external horizontal plane through the feet 22 to prevent wear between the bottom of the protective shell 1 and the external horizontal plane. The setting of the reinforcing strip 21 can enhance the strength of the protective shell 1, so that the protective shell 1 is not easily deformed when the device is used for a long time. The protective cover 23 can be flipped by the hinge to facilitate opening the top frame 2 and placing the zinc block into the zinc pot 3.

[0036] The device can be connected to an external gas pipeline through the gas pipe 5, and the protective ring 8 can protect the connection between the gas pipe 5 and the gas pipeline. The gas pipe 5 can be used to transport external gas to the annular gas pipe 6, and then transport it to the flame nozzle 7 through the annular gas pipe 6. Through the coordinated use of an external igniter and the notch 4, the flame nozzle 7 can be ignited to heat the zinc pot 3 in the center of the annular gas pipe 6. At the same time, the device can also select an electric flame nozzle 7 with automatic ignition function.

[0037] By using the electric push rod 10 and the connecting plate 9 in coordination, the gas pipe 5 can be moved up and down in the slot 4, which is convenient for changing the position of the heating point of the device and heating different positions of the zinc pot 3, so that the top and bottom of the zinc pot 3 can be heated quickly, thereby improving the efficiency of the zinc pot 3 in melting the zinc block and improving the practicality of the device. The flame nozzles 7 are evenly distributed on the outside of the zinc pot 3, so that the zinc pot 3 is heated evenly.

[0038] The combined use of the slide groove 11 and the slider can play a guiding role when the annular air pipe 6 moves up and down, thereby ensuring the stability of the up and down movement of the annular air pipe 6. The combined use of the smoke exhaust pipe 18 and the exhaust fan 19 can extract the smoke inside the protective shell 1. The combined use of the air inlet mesh port 20 and the slot 4 can facilitate the entry of outside air into the interior of the protective shell 1, thereby providing oxygen for combustion.

[0039] Starting the motor 12 causes the gear 13 to rotate, driving the gear ring 14 to rotate, causing the scraper 15 to flip in the zinc pot 3, so as to facilitate stirring of the zinc blocks in the zinc pot 3 and accelerate the melting efficiency of the zinc blocks. At the same time, the scraper 15 fits the inner wall of the zinc pot 3, and can scrape off the zinc blocks attached to the inner wall of the zinc pot 3, so that the attached zinc flows into the bottom of the zinc pot 3, avoiding the waste of shaped zinc blocks, improving the quality of the zinc blocks melted by the device, and further improving the practicality of the device. The coordinated use of the annular groove 16 and the retaining ring 17 can ensure the stability of the rotation of the packaging gear ring 14. After the use of the device is completed, the protective cover 23 can be closed through the hinge to prevent external dust from entering the zinc pot 3.

[0040] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A hot dip galvanizing furnace for hot dip galvanizing, comprising a protective shell (1), a top frame (2) fixedly connected to the top of the protective shell (1), a circular hole being provided at the center of the top frame (2), a zinc pot (3) being movably connected to the top frame (2) through the circular hole, the zinc pot (3) being located inside the protective shell (1), and an opening being provided at the top of the zinc pot (3), characterized in that: A notch (4) is provided on one side of the protective shell (1), and the notch (4) penetrates the side wall of the protective shell (1). An air pipe (5) that can move up and down along the notch (4) is provided on the inner side of the notch (4). An end of the air pipe (5) close to the center of the protective shell (1) is connected to an annular air pipe (6), and the zinc pot (3) is located at the center of the annular air pipe (6). When the air pipe (5) moves up and down, the annular air pipe (6) moves up and down along the vertical center line of the zinc pot (3). A plurality of flame spray nozzles (7) are fixedly connected to the inner side of the annular air pipe (6). The interiors of the annular air pipes (6) of the flame spray nozzles (7) are connected, and the plurality of flame spray nozzles (7) are evenly distributed in an arc shape with respect to the vertical center line of the zinc pot (3).

2. The hot-dip galvanizing furnace for hot-dip galvanizing according to claim 1, characterized in that: A protective ring (8) is fixedly connected to the outside of the gas delivery pipe (5), connecting plates (9) are provided on both sides of the protective ring (8), an electric push rod (10) is fixedly connected to the top of the connecting plate (9), and the electric push rod (10) is fixedly connected to the top frame (2).

3. The hot-dip galvanizing furnace for hot-dip galvanizing according to claim 2, characterized in that: The protective ring (8) is coaxially arranged with the gas transmission pipe (5); the connecting plate (9) and the protective ring (8) form an integrated structure; the connecting plate (9) is symmetrical about the central axis of the protective ring (8); and the central axis of the electric push rod (10) coincides with the vertical center line of the connecting plate (9).

4. The hot-dip galvanizing furnace for hot-dip galvanizing according to claim 3, characterized in that: The inner wall of the protective shell (1) is provided with a plurality of slide grooves (11), the length of the slide grooves (11) matches the length of the notch (4), the plurality of slide grooves (11) are evenly distributed in an arc shape with respect to the vertical center line of the protective shell (1), and the annular air pipe (6) is connected to the slide grooves (11) via a slider.

5. The hot-dip galvanizing furnace for hot-dip galvanizing according to claim 4, characterized in that: A motor (12) is fixedly connected to the interior of the top frame (2), a gear (13) is fixedly connected to the top of the motor (12), a gear ring (14) is provided on one side of the gear (13), the outer side of the gear ring (14) meshes with the outer tooth pattern of the gear (13), a plurality of scrapers (15) are fixedly connected to the bottom of the gear ring (14), the outer sides of the plurality of scrapers (15) are in contact with the inner wall of the zinc pot (3), the plurality of scrapers (15) are evenly distributed in a ring shape about the central axis of the gear ring (14), and the central axis of the gear ring (14) coincides with the central axis of the zinc pot (3).

6. The hot-dip galvanizing furnace for hot-dip galvanizing according to claim 5, characterized in that: The top cover of the zinc pot (3) is provided with an annular groove (16), the top of the annular groove (16) is rotatably connected to a snap ring (17), the top of the snap ring (17) is fixedly connected to the bottom of the gear ring (14), and the central axis of the snap ring (17) coincides with the central axis of the gear ring (14).

7. The hot-dip galvanizing furnace for hot-dip galvanizing according to any one of claims 1 to 6, characterized in that: A smoke exhaust pipe (18) is threadedly connected to the top of one side of the protective shell (1), the smoke exhaust pipe (18) is communicated with the interior of the protective shell (1), an exhaust fan (19) is provided at the end of the smoke exhaust pipe (18), and an air inlet mesh port (20) is provided at the bottom of one side of the protective shell (1).

8. The hot-dip galvanizing furnace for hot-dip galvanizing according to claim 7, characterized in that: A plurality of reinforcing strips (21) are arranged on the outer side of the protective shell (1), and an integrated structure is formed between the reinforcing strips (21) and the protective shell (1); the outer side of the reinforcing strips (21) is a curved surface structure, and the plurality of reinforcing strips (21) are evenly distributed in an arc shape with respect to a vertical center line of the protective shell (1); a plurality of pads (22) are fixedly connected to the bottom of the protective shell (1), and the plurality of pads (22) are evenly distributed in a ring shape with respect to the vertical center line of the protective shell (1).

9. The hot-dip galvanizing furnace for hot-dip galvanizing according to claim 8, characterized in that: A protective cover (23) is provided on the top of the top frame (2); the protective cover (23) and the top frame (2) are rotatably connected via a hinge; and the outer dimensions of the protective cover (23) match those of the top frame (2).

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