Automatic galvanizing device

Abstract

The invention provides an automatic galvanization device, and relates to the technical field of galvanization, the automatic galvanization device comprises a base, a galvanization pool is arranged in the base, a tripod is movably arranged at the upper end of the base, a pickling pool is further arranged in the base, and a plugging piece and an air drying piece are arranged in the tripod; the plugging piece comprises first circular pipes, an annular disc and an annular body. The two first circular pipes are rotationally arranged on the inner side of the triangular frame in a left-right opposite mode and used for clamping the two ends of the circular pipes. The inner end of each first circular pipe is fixed to and communicates with the annular disc, and the annular body communicates with the output end of the air drying piece. The two ends of the round pipe are clamped through the rotating annular body, the outer surface of the round pipe can be completely exposed and not blocked or limited, the round pipe can make full contact with galvanizing liquid in a galvanizing pool, meanwhile, the annular body can drive the round pipe to rotate in the galvanizing pool when rotating, and the galvanizing liquid is evenly attached to the outer surface of the round pipe; and the round pipe is galvanized more uniformly.

Description

Technical Field

[0001] The invention relates to the technical field of galvanizing, and in particular to an automatic galvanizing device. Background Art

[0002] Zinc is a more active metal than iron. When a galvanized layer is applied to the surface of a metal such as steel, zinc will preferentially undergo oxidation reactions in a corrosive environment. For example, in the presence of moisture and oxygen, zinc will form a layer of compounds such as zinc oxide (ZnO) and zinc hydroxide [Zn(OH)2]. This layer of compounds is relatively dense and can prevent oxygen and moisture from further contacting the underlying metal, thereby playing a protective role. In this process, as long as there is a layer of zinc remaining, it can continue to protect the underlying metal from corrosion. It is widely used in outdoor steel round tube structures, such as water pipes and street light poles. These facilities are exposed to the air for a long time and are easily corroded by environmental factors such as rain and fog. The galvanized layer can greatly extend their service life and reduce maintenance costs. Galvanizing equipment will be used in the galvanizing process;

[0003] For example, the prior art application number CN202022870839.4 discloses an automatic galvanizing device, comprising a machine body and a galvanizing pool, wherein a galvanizing pool is arranged inside the machine body, temperature sensors are arranged on both sides of the galvanizing pool, a heating plate is arranged at the bottom of the galvanizing pool, a processing left end plate and a processing right end plate are arranged on the inner side of the temperature sensor, a bellows is arranged on the upper end of the processing right end plate, an alarm is arranged on the right side of the processing right end plate, a slide groove is arranged on the left side of the processing left end plate, a slider is arranged in the slide groove, a slide plate is arranged on the inner side of the slide plate, a workpiece groove is arranged on the slide plate, a connecting rod is connected to the outer side of the slide plate, a locating pin is arranged on the slide plate, a connecting seat is arranged at the lower end of the connecting rod, a lifting rod is arranged at the lower end of the connecting seat, a hydraulic pump is arranged at the lower end of the lifting rod, and a control switch is arranged on the hydraulic pump;

[0004] It is known through actual use that the above-mentioned prior art mainly places the round tube to be galvanized on the upper surface of the slide, and the slide and the round tube are moved into the galvanizing pool under the action of the driving mechanism to complete the galvanizing of the round tube; however, it is found in use that when the round tube is placed on the upper surface of the slide, the slide will block the lower surface of the round tube, resulting in the position of the round tube being restricted, which will cause uneven galvanizing of the round tube; at the same time, after the round tube is in the galvanizing pool, the inside of the round tube will also be galvanized, and the zinc liquid is easy to solidify inside the pipe, resulting in blockage of the round tube, increased mass, and may also cause impurity residues and bacterial growth, thereby reducing product quality; for this reason, we have improved the above-mentioned prior art according to actual usage. Summary of the invention

[0005] When the round tube is placed on the upper surface of the slide, the slide will block the lower surface of the round tube, limiting the position of the round tube and causing uneven galvanizing of the round tube. At the same time, after the round tube is in the galvanizing pool, the inside of the round tube will also be galvanized, and the zinc liquid will easily solidify inside the pipeline, causing blockage of the round tube, increased mass, and may also cause residual impurities and bacterial growth, thereby reducing product quality. The present invention aims to provide an automatic galvanizing device.

[0006] To achieve the technical purpose, the scheme of the present invention is: an automatic galvanizing device, including a base, a galvanizing pool is arranged in the base, a tripod is movably arranged on the upper end of the base, a pickling pool is also arranged in the base, and a sealing part and an air-drying part are arranged in the tripod; the sealing part includes a No. 1 circular tube, an annular disk and an annular body, and two No. 1 circular tubes are rotatably arranged on the inner side of the tripod opposite to each other on the left and right sides for clamping the two ends of the circular tube; the inner end of each No. 1 circular tube is fixed to and connected with the annular disk, the inner side of the annular disk is fixed to the annular body, and the annular body is connected with the output end of the air-drying part.

[0007] Preferably, an electric slide rail is fixed to the upper surface of the base, a gantry is fixed to the output end of the electric slide rail, an electric telescopic rod No. 1 is fixed to the lower surface of the gantry, and the output end of the electric telescopic rod No. 1 is welded to the upper surface of the tripod to drive the sealing part and the air-drying part to move.

[0008] Preferably, a placement plate is welded to the bottom wall of the base, and at least four arc-shaped grooves are provided at the upper end of the placement plate.

[0009] Preferably, a slider is slidably arranged inside the tripod, a servo motor is fixed to one end of the slider located on the inner side of the tripod, and a No. 1 gear is fixed to the output end of the servo motor; a No. 2 gear is fixed to the outer periphery of the No. 1 circular tube located at the lower end of the servo motor, and the No. 2 gear is meshed with the No. 1 gear to drive the No. 1 circular tube, the annular disk and the annular body to rotate.

[0010] Preferably, two mounting frames are provided on the inner side of the tripod, one of which is fixed to the lower surface of the slider, and the other is fixed to the inner side of the tripod; a No. 2 circular tube is fixed on the inner side of the mounting frame, one end of the No. 2 circular tube extends into the No. 1 circular tube, and a sealed bearing is provided between the inner wall of the No. 1 circular tube and the outer surface of the No. 2 circular tube for the No. 1 circular tube to rotate around the periphery of the No. 2 circular tube.

[0011] Preferably, a fixing frame is welded to the right side of the tripod, a No. 2 electric telescopic rod is fixed on the inner side of the fixing frame, and the output end of the No. 2 electric telescopic rod is fixed to the right end of the slider to drive the slider to slide in the tripod.

[0012] Preferably, the air-drying component includes a hot air blower and an arc box, the output end of the hot air blower is connected to the arc box, the two ends of the arc box are welded to the inner side of the tripod and the arc box is located above the circular tube, and a plurality of air outlet holes are provided on the lower surface of the arc box; a No. 1 hose and a No. 2 hose are respectively fixed to the output end of the hot air blower, one end of the No. 1 hose is fixedly connected to the arc box, and one end of the No. 2 hose is fixedly connected to the No. 2 circular tube located at the lower end of the servo motor.

[0013] Preferably, a solenoid valve is provided at the center of the annular disk close to the servo motor, and an air outlet pipe is fixedly connected to the upper surface of the second circular tube away from the servo motor.

[0014] Preferably, a conical tube is fixed to the inner side of the annular disk close to the second hose by bolts, and a hemisphere is fixed to the open side of the conical tube by a connecting rod;

[0015] 1. In the present invention, since the rotating annular body clamps the two ends of the round tube, the outer surface of the round tube can be completely exposed without being blocked or restricted and can fully contact with the galvanizing liquid in the galvanizing pool. At the same time, when the annular body rotates, it will drive the round tube to rotate in the galvanizing pool, so that the galvanizing liquid can be evenly attached to the outer surface of the round tube, making the galvanizing of the round tube more uniform;

[0016] 2. In addition, the annular body has a certain degree of flexibility. When the annular body clamps the two ends of the round tube, the two ends of the round tube can be tightly sealed to prevent the pickling liquid and the galvanizing liquid from entering the inside of the round tube, and avoid the pickling liquid and the galvanizing liquid from solidifying and clogging in the round tube, effectively ensuring the quality of the galvanizing process products;

[0017] 3. The ring body is set in a circular shape, which can increase the area for tightening and fixing the two ends of the round tube. At the same time, the distance between the two ring bodies can be flexibly adjusted by the No. 2 electric telescopic rod, which can realize the clamping and galvanizing of round tubes of different diameters and lengths, and increase the adaptability of the round tubes;

[0018] 4. After galvanizing, since the output ends of the annular body and the air-drying piece are interconnected, the hot air in the air-drying piece will be divided into two parts. One part will be sprayed to the outer surface of the round tube, and the other part will directly enter the inside of the round tube to increase the heat of the round tube after reaching the annular body. When the round tube rotates, the inside and the outer surface of the round tube can be dried at the same time, which greatly shortens the entire drying process after galvanizing, avoids moisture in the galvanized bottom layer, and prevents the galvanized layer from peeling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the blocking member of the present invention;

[0021] Figure 3 This is a schematic diagram of the connection between the plugging member and the round tube of the present invention;

[0022] Figure 4 It is another perspective schematic diagram of the present invention;

[0023] Figure 5 For the present invention Figure 4 The enlarged schematic diagram at a in the middle;

[0024] Figure 6 For the present invention Figure 4 The enlarged schematic diagram at b in the middle;

[0025] Figure 7 For the present invention Figure 2 A partial enlarged schematic diagram of

[0026] Figure 8 It is a schematic diagram of the connection between the annular disk, the annular body and the electromagnetic valve of the present invention;

[0027] Fig. 9 It is a schematic diagram of the air-drying part of the present invention.

[0028] Among them, 1. base; 2. pickling tank; 3. galvanizing tank; 4. tripod; 5. sealing part; 51. No. 1 circular tube; 52. annular disk; 53. annular body; 54. No. 2 gear; 55. No. 2 circular tube; 56. sealed bearing; 57. exhaust pipe; 58. solenoid valve; 59. hemisphere; 510. conical tube; 6. air drying part; 61. hot air blower; 62. arc box; 63. exhaust hole; 64. No. 1 hose; 65. No. 2 hose; 7. round tube; 8. electric slide rail; 9. gantry; 10. No. 1 electric telescopic rod; 11. placement plate; 12. arc groove; 13. slider; 14. servo motor; 15. No. 2 electric telescopic rod; 16. No. 1 gear; 17. fixing frame; 18. mounting frame. DETAILED DESCRIPTION

[0029] The invention of this application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In order to clearly and completely describe the technical solution, the following embodiments are selected for illustration; based on the contents recorded in this application, other embodiments obtained without creative work are all within the scope of protection of the present invention.

[0030] In the following embodiments, it should be noted that the terms "up", "down", "left", "right", "inside", "outside", "top / bottom", etc., the orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of clearly describing the present embodiments, rather than indicating or implying that the device or element referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] like Figures 1 to 9 As shown, an embodiment of the present invention provides an automatic galvanizing device, including a base 1, a galvanizing pool 3 is arranged in the base 1 for galvanizing, a plurality of sets of tripods 4 are movably arranged on the upper end of the base 1, a pickling pool 2 is also arranged in the base 1 for pickling the round tube 7, and each set of tripods 4 can be provided with a blocking piece 5 and an air-drying piece 6 to improve the galvanizing efficiency; the blocking piece 5 includes a No. 1 round tube 51, an annular disk 52 and an annular body 53, and two No. 1 round tubes 51 are rotatably arranged on the inner side of the tripod 4 to clamp the two ends of the round tube 7; the inner end of each No. 1 round tube 51 is fixed and connected to the annular disk 52, the inner side of the annular disk 52 is fixed to the annular body 53, and the annular body 53 is connected to the output end of the air-drying piece 6 to allow hot air to pass through the annular body 53 into the inside of the round tube 7;

[0032] The hydrochloric acid pickling concentration in the pickling tank 2 is generally 10%-22%, and the sulfuric acid pickling concentration is more suitable at 15%-20%. Too high acid concentration may cause excessive corrosion, while too low acid concentration will slow the pickling speed.

[0033] Temperature: Heating wires are installed in both the pickling tank 2 and the galvanizing tank 3. The pickling temperature of hydrochloric acid can be 20-39°C, and the pickling temperature of sulfuric acid can be slightly higher, at 45-70°C. Increasing the temperature can speed up the pickling reaction.

[0034] Time: Determined by the thickness of the rust layer and oxide scale on the workpiece surface, generally 5-20 minutes. Pay attention to the pickling progress to avoid excessive pickling.

[0035] After pickling, there will be residual acid and impurities such as iron salt on the surface of the round tube 7 after pickling, which needs to be rinsed with clean water to ensure that the surface of the round tube 7 is neutral to prevent residual acid from corroding the workpiece.

[0036] refer to Figure 4 An electric slide rail 8 is fixed to the upper surface of the base 1, a gantry 9 is fixed to the output end of the electric slide rail 8, an electric telescopic rod No. 1 10 is fixed to the lower surface of the gantry 9, and the output end of the electric telescopic rod No. 1 10 is welded to the upper surface of the tripod 4 to drive the blocking part 5 and the air-drying part 6 to move.

[0037] refer to Figure 4 A placement plate 11 is welded to the bottom wall of the base 1 , and at least four arc grooves 12 are provided at the upper end of the placement plate 11 . The number of the arc grooves 12 is 4-8, which is convenient for stacking the round tubes 7 .

[0038] refer to Figure 5A slider 13 is slidably arranged inside the tripod 4. A servo motor 14 is fixed to one end of the slider 13 located inside the tripod 4. A No. 1 gear 16 is fixed to the output end of the servo motor 14. A No. 2 gear 54 is fixed to the periphery of the No. 1 circular tube 51 located at the lower end of the servo motor 14. The No. 2 gear 54 meshes with the No. 1 gear 16 to drive the No. 1 circular tube 51, the annular disk 52 and the annular body 53 to rotate. The annular disk 52 and the annular body 53 can be fixed by rivets or glue. The annular body 53 can be made of fluororubber (FKM) or ceramic fiber:

[0039] Fluororubber molecular chains are relatively smooth and have good elasticity and flexibility. It can be made into various seals; high-quality fluororubber products can even withstand higher temperatures and can meet the use requirements of high-temperature environments of more than 400 degrees;

[0040] Ceramic fiber has a certain flexibility and can be woven into various shapes, such as ropes, cloth-like materials, etc. In sealing applications, sealing materials made of ceramic fibers can adapt to irregular sealing surfaces and achieve sealing effects through filling and winding, etc., and are especially suitable for sealing high-temperature equipment. Ceramic fibers can withstand temperatures above 1000°C;

[0041] refer to Figure 5 Two mounting frames 18 are arranged on the inner side of the tripod 4, one of which is fixed to the lower surface of the slider 13, and the other is fixed to the inner side of the tripod 4; a No. 2 circular tube 55 is fixed to the inner side of the mounting frame 18, one end of the No. 2 circular tube 55 extends into the No. 1 circular tube 51, and a sealed bearing 56 is arranged between the inner wall of the No. 1 circular tube 51 and the outer surface of the No. 2 circular tube 55 for the No. 1 circular tube 51 to rotate around the No. 2 circular tube 55, the outer surface of the outer ring of the sealed bearing 56 is welded to the inner wall of the No. 1 circular tube 51, and the inner ring of the sealed bearing 56 is welded to the outer surface of the No. 2 circular tube 55, and the sealed bearing 56 prevents liquid from entering the No. 1 circular tube 51 and the circular tube 7.

[0042] refer to Figure 5 A fixing frame 17 is welded on the right side of the tripod 4, and a second electric telescopic rod 15 is fixed on the inner side of the fixing frame 17. The output end of the second electric telescopic rod 15 is fixed to the right end of the slider 13 to drive the slider 13 to slide in the tripod 4 to control the circular tube 7 to be pressed tightly.

[0043] refer to Fig. 9The air-drying part 6 includes a hot air blower 61 and an arc box 62. The output end of the hot air blower 61 is connected to the arc box 62. The two ends of the arc box 62 are welded to the inner side of the tripod 4 and the arc box 62 is located above the circular tube 7. A plurality of air outlet holes 63 are provided on the lower surface of the arc box 62 to increase the air outlet range. A No. 1 hose 64 and a No. 2 hose 65 are fixed to the output end of the hot air blower 61 respectively. One end of the No. 1 hose 64 is fixedly connected to the arc box 62, and one end of the No. 2 hose 65 is fixedly connected to the No. 2 circular tube 55 located at the lower end of the servo motor 14.

[0044] refer to Fig. 9 A solenoid valve 58 is provided at the center of the annular disk 52 near the servo motor 14 to prevent liquid from entering the annular disk 52 and the circular tube 7. An air outlet pipe 57 is fixedly connected to the upper surface of the second circular tube 55 away from the servo motor 14 to discharge the hot air passing through the circular tube 7, which is used for hot air circulation and prevents the circular tube 7 from overheating.

[0045] refer to Fig. 9 A conical tube 510 is fixed to the inner side of the annular disk 52 near the second hose 65 by bolts, and a hemisphere 59 is fixed to the open side of the conical tube 510 by a connecting rod. The hot air will diffuse through the hemisphere 59, increasing the flow rate of the hot air and causing the circular tube 7 to heat up quickly.

[0046] Working principle: firstly, place the round tube 7 between the two annular bodies 53, then start the No. 2 electric telescopic rod 15 to push the slider 13 to move inwards and push one of the No. 2 round tubes 55 to move, and finally make the No. 2 round tube 55 push the No. 1 round tube 51 to drive the annular plate 52 and the annular body 53 to move inwards to clamp and fix the round tube 7;

[0047] The device is provided with a pickling tank 2 in the base 1. Before galvanizing the round tube 7, the electric slide rail 8 can be started to drive the gantry 9 to move so that the blocking member 5 moves and drives the round tube 7 to move to the top of the pickling tank 2. Then, the blocking member 5 is pushed down by starting the No. 1 electric telescopic rod 10 to make the round tube 7 enter the pickling tank 2 for pickling, thereby removing the rust and oxide scale on the surface of the round tube 7, so that the zinc layer can be better adhered, and the galvanizing effect is improved.

[0048] Next, the No. 1 electric telescopic rod 10 and the electric slide rail 8 are operated to place the round tube 7 in the galvanizing pool 3, and then the servo motor 14 is started to drive the No. 1 gear 16 and the No. 2 gear 54 to rotate, so that the No. 1 round tube 51 drives the annular disk 52 and the annular body 53 to rotate. Since the annular body 53 clamps the two ends of the round tube 7, the outer surface of the round tube 7 can be completely exposed without being blocked and restricted, and can fully contact with the galvanizing liquid in the galvanizing pool 3. At the same time, when the annular body 53 rotates, it will drive the round tube 7 to rotate in the galvanizing pool 3, so that the galvanizing liquid can be evenly attached to the outer surface of the round tube 7, so that the galvanizing of the round tube 7 is more uniform;

[0049] In addition, the annular body 53 also has a certain degree of flexibility. When the annular body 53 clamps the two ends of the round tube 7, the two ends of the round tube 7 can be tightly sealed to prevent the pickling liquid and the galvanizing liquid from entering the inside of the round tube 7, and avoid the pickling liquid and the galvanizing liquid from solidifying and clogging in the round tube 7, thereby effectively ensuring the quality of the galvanizing process product;

[0050] At the same time, the annular body 53 is set in a circular ring shape, which can increase the area of ​​the two ends of the round tube 7 to be tightly fixed. At the same time, the distance between the two annular bodies 53 can be flexibly adjusted by the second electric telescopic rod 15, so that the round tubes 7 of different diameters and lengths can be clamped and galvanized, thereby increasing the adaptability of the round tube 7;

[0051] After the circular tube 7 is galvanized, since the annular body 53 is interconnected with the annular disk 52, the No. 1 circular tube 51, the No. 2 circular tube 55, and the output end of the air-drying unit 6, and at the same time, the arc box 62 in the air-drying unit 6 is also located above the circular tube 7, after the hot air blower 61 in the air-drying unit 6 is started, the hot air will be divided into two parts, one part will be ejected from the air outlet 63 on the lower surface of the arc box 62 to the outer surface of the circular tube 7 through the No. 1 hose 64, and the other part will enter the No. 2 circular tube 55 through the No. 2 hose 65 and reach the annular body 53. After the solenoid valve 58 is opened, the hot air will directly enter the interior of the circular tube 7 to increase the heat of the circular tube 7. When the servo motor 14 rotates to rotate the circular tube 7, the interior of the circular tube 7 and the outer surface of the circular tube 7 can be dried simultaneously, greatly shortening the entire drying process after galvanizing, avoiding moisture in the galvanized bottom layer, and preventing the galvanized layer from peeling off. Finally, the second electric telescopic rod 15 is controlled to drive one of the annular bodies 53 to separate from the round tube 7, so that the round tube 7 is placed in the arc groove 12, and the galvanizing process is completed.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any slight modification, equivalent substitution and improvement made to the above embodiment based on the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. An automated galvanizing device, comprising a base (1), a galvanizing pool (3) being arranged in the base (1), and a tripod (4) being movably arranged at the upper end of the base (1), characterized in that: The base (1) is also provided with a pickling tank (2), and the tripod (4) is provided with a sealing member (5) and an air-drying member (6); The blocking member (5) comprises a first circular tube (51), an annular disk (52) and an annular body (53); two first circular tubes (51) are rotatably arranged on the inner side of the tripod (4) and are used to clamp the two ends of the circular tube (7); The inner end of each of the first circular tubes (51) is fixed to and communicated with the annular disk (52), the inner side of the annular disk (52) is fixed to the annular body (53), and the annular body (53) is communicated with the output end of the air-drying unit (6).

2. The automatic galvanizing device according to claim 1, characterized in that: An electric slide rail (8) is fixed to the upper surface of the base (1); a gantry (9) is fixed to the output end of the electric slide rail (8); a first electric telescopic rod (10) is fixed to the lower surface of the gantry (9); the output end of the first electric telescopic rod (10) is welded to the upper surface of the tripod (4) for driving the blocking member (5) and the air-drying member (6) to move.

3. The automatic galvanizing device according to claim 2, characterized in that: A placement plate (11) is welded to the bottom wall of the base (1), and at least four arc-shaped grooves (12) are arranged at the upper end of the placement plate (11).

4. The automatic galvanizing device according to claim 1, characterized in that: A slider (13) is slidably arranged inside the tripod (4), a servo motor (14) is fixed to one end of the slider (13) located inside the tripod (4), and a first gear (16) is fixed to the output end of the servo motor (14); A second gear (54) is fixed to the periphery of the first circular tube (51) located at the lower end of the servo motor (14), and the second gear (54) is meshed with the first gear (16) to drive the first circular tube (51), the annular disk (52) and the annular body (53) to rotate.

5. The automatic galvanizing device according to claim 4, characterized in that: Two mounting frames (18) are arranged on the inner side of the tripod (4), one of the mounting frames (18) is fixed to the lower surface of the slider (13), and the other mounting frame (18) is fixed to the inner side of the tripod (4); A second circular tube (55) is fixed on the inner side of the mounting frame (18), one end of the second circular tube (55) extends into the first circular tube (51), and a sealing bearing (56) is provided between the inner wall of the first circular tube (51) and the outer surface of the second circular tube (55) for the first circular tube (51) to rotate around the outer periphery of the second circular tube (55).

6. The automatic galvanizing device according to claim 1, characterized in that: A fixing frame (17) is welded to the right side of the tripod (4), a second electric telescopic rod (15) is fixed inside the fixing frame (17), and an output end of the second electric telescopic rod (15) is fixed to the right end of the slider (13) for driving the slider (13) to slide inside the tripod (4).

7. The automatic galvanizing device according to claim 5, characterized in that: The air drying unit (6) comprises a hot air blower (61) and an arc-shaped box (62); the output end of the hot air blower (61) is connected to the arc-shaped box (62); the two ends of the arc-shaped box (62) are welded to the inner side of the tripod (4); the arc-shaped box (62) is located above the circular tube (7); and a plurality of air outlet holes (63) are provided on the lower surface of the arc-shaped box (62); A first hose (64) and a second hose (65) are fixed to the output ends of the hot air blower (61), one end of the first hose (64) is fixedly connected to the arc box (62), and one end of the second hose (65) is fixedly connected to the second circular tube (55) located at the lower end of the servo motor (14).

8. The automatic galvanizing device according to claim 7, characterized in that: A solenoid valve (58) is provided at the center of the annular disk (52) close to the servo motor (14), and an air outlet pipe (57) is fixedly connected to the upper surface of the second circular tube (55) away from the servo motor (14).

9. The automatic galvanizing device according to claim 7, characterized in that: A conical tube (510) is fixed to the inner side of the annular disk (52) close to the second hose (65) by means of bolts, and a hemisphere (59) is fixed to the open side of the conical tube (510) by means of a connecting rod.

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