A cooling device for hot-dip galvanizing

Abstract

The application belongs to the technical field of hot galvanizing, and particularly discloses a cooling device for hot galvanizing, which comprises a cooling pool, the upper walls of the two opposite side walls of the cooling pool are symmetrically provided with fixed baffle plates, the upper walls of the other two opposite side walls of the cooling pool are rotationally provided with movable baffle plates, the movable baffle plates and the side walls of the cooling pool are connected together through self-weight transmission assemblies, the self-weight transmission assemblies are symmetrically arranged on the two opposite side walls, the two opposite self-weight transmission assemblies are connected together through a placing rack, the bottom wall of the cooling pool is provided with a vortex damping assembly, the upper end of the vortex damping assembly is connected with the bottom wall of the placing rack, and the inner side wall of the fixed baffle plate is provided with an automatic water spraying assembly. The movable baffle plate is closed by the self-weight of the steel pipe, so that the splashing of the cooling water is avoided, the upper surface of the steel pipe is automatically sprayed with the cooling water when the lower surface of the steel pipe enters into the cooling water, the temperature difference of the whole steel pipe is reduced, and the cracking of the galvanizing layer caused by residual stress is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hot galvanizing, and particularly relates to a cooling device for hot galvanizing. BACKGROUND

[0002] Hot galvanizing, also called hot dip zinc and hot dip galvanizing, is to immerse a steel piece after rust removal into molten zinc at about 500 DEG C, so that a zinc layer is attached to the surface of the steel member, thereby achieving the purpose of corrosion resistance. When the steel is taken out of the molten zinc bath, the temperature is relatively high, and needs to be cooled. Water cooling is a common cooling method, which can reduce the temperature of the steel, inhibit the adverse reaction of the newly formed coating with the atmosphere, and make the hot galvanizing product stabilize as soon as possible, thereby ensuring the product quality.

[0003] When the steel pipe is cooled by hot galvanizing, the steel pipe is lifted by lifting equipment and then immersed into the cooling pool. Since the length of the steel pipe is relatively long, the steel pipe cannot be kept in a horizontal state during lifting, so that one end of the steel pipe enters the cooling pool first, and the cooling of the steel pipe is uneven. In order to avoid splashing of the cooling water, the steel pipe is slowly immersed into the cooling water during the process of immersion into the cooling pool. The temperature difference between the lower side and the upper side of the steel pipe causes residual stress, thereby causing cracking of the galvanized layer.

[0004] Therefore, a cooling device for hot galvanizing is needed to solve the above problems. SUMMARY

[0005] In view of the above situation, in order to overcome the defects of the prior art, the application provides a cooling device for hot galvanizing. The movable baffle is closed by the self-weight of the steel pipe, so that the cooling water is prevented from splashing. When the lower surface of the steel pipe enters the cooling water, the upper surface of the steel pipe is automatically sprayed with cooling water, the temperature difference of the whole steel pipe is reduced, and the cracking of the galvanized layer caused by residual stress is avoided.

[0006] The technical scheme adopted by the application is as follows: the application provides a cooling device for hot galvanizing, which comprises a cooling pool. The upper walls of the two opposite side walls of the cooling pool are symmetrically provided with fixed baffles. The upper walls of the other two opposite side walls of the cooling pool are rotatably provided with movable baffles. The movable baffles and the side walls of the cooling pool are connected together through self-weight transmission assemblies. The self-weight transmission assemblies are symmetrically arranged on the two opposite side walls. The two opposite self-weight transmission assemblies are connected together through a placing rack. The bottom wall of the cooling pool is provided with a vortex damping assembly. The upper end of the vortex damping assembly is connected with the bottom wall of the placing rack. The inner side wall of the fixed baffle is provided with an automatic water spraying assembly. The automatic water spraying assembly and the movable baffle are connected together through a butt joint transmission assembly.

[0007] Further, the vortex damping assembly comprises a damping cylinder, a magnetic block, a movable rod and a buffer spring, the damping cylinder is a cylindrical structure with an open upper end, the damping cylinder is an aluminum cylindrical structure with an open upper end, the movable rod is slidingly arranged in the damping cylinder, the lower end of the movable rod is provided with a magnetic block, the magnetic block slides in the damping cylinder, the lower end of the buffer spring is arranged on the inner bottom wall of the damping cylinder, the upper end of the buffer spring is arranged on the magnetic block, and the upper end of the movable rod is fixed on the bottom wall of the placing rack.

[0008] Further, the self-weight transmission assembly comprises a transmission gear, a transmission rack, a transmission shaft and a rotating frame, the side walls of the cooling pool are symmetrically provided with transmission grooves, the transmission shaft is rotatably arranged on the two opposite side walls of the transmission groove, the transmission gear is arranged on the transmission shaft, the rotating frame is arranged on the transmission shaft, the transmission rack is arranged on the outer side wall of the placing rack, the transmission gear is engaged with the transmission rack, and the rotating frame is fixedly connected with the lower edge of the movable baffle.

[0009] Further, the automatic water spraying assembly comprises a water suction cylinder, a push plate, a connecting pipe, a connecting spring, a water suction pipe and a spray pipe, the water suction cylinder is a hollow cavity with one end open, the water suction cylinder slides horizontally along the inner side wall of the fixed baffle, the inner end of the push plate is slidingly arranged in the water suction cylinder, the connecting spring is arranged in the water suction cylinder, the two ends of the connecting spring are arranged on the bottom wall of the water suction cylinder and the push plate respectively, the push plates on the same side are connected together through the connecting pipe, the lower wall of the connecting pipe is arrayed with the spray pipes, the water suction cylinder is communicated with the lower part of the cooling pool through the water suction pipe, the push plate is provided with a drainage channel, the drainage channel penetrates through the inner end of the push plate, and the drainage channel is communicated with the connecting pipe.

[0010] Further, the butt joint transmission assembly comprises a transmission body, a butt joint rack and a wheel tooth, the transmission body is a circular arc shape, the upper wall of the transmission body is provided with a wheel tooth, the butt joint rack is arranged on the lower wall of the water suction cylinder, and the butt joint rack is engaged with the wheel tooth.

[0011] Further, the inner side wall of the fixed baffle is provided with a limiting groove, the limiting groove is T-shaped, the side wall of the water suction cylinder is provided with a limiting strip, the limiting strip is T-shaped, and the limiting strip is slidingly arranged in the limiting groove.

[0012] Further, the center of the transmission body coincides with the center of the transmission gear.

[0013] Further, the water suction pipe is provided with a one-way valve one, and the drainage channel of the inner end of the push plate is provided with a one-way valve two.

[0014] Further, the placing rack is provided with a V-shaped groove.

[0015] The beneficial effects achieved by the above structure are as follows:

[0016] 1. Under its own weight, the steel pipe presses down on the placement frame, which drives the transmission rack to move downward. The transmission rack drives the transmission gear, transmission shaft, rotating frame and movable baffle to rotate. During the process of the steel pipe being immersed in cooling water, the movable baffle plays a blocking role to prevent the cooling water from splashing out.

[0017] 2. During the inward rotation of the movable baffle, the transmission body is driven to rotate. The gear teeth on the transmission body mesh with the docking gear. The docking gear drives the water suction cylinder and the push plate to move inward. During the docking process of the push plate, the cooling water in the water suction cylinder is sprayed out through the spray pipe on the connecting pipe to cool the upper side of the steel pipe. At the same time, the lower side of the steel pipe is immersed in the cooling water to reduce the temperature difference between the upper and lower sides of the steel pipe and avoid cracking of the galvanized layer due to residual stress.

[0018] 3. After cooling is complete, the steel pipe is lifted upwards, the movable baffle flips outwards, the movable baffle drives the transmission body to rotate outwards, and the connecting gear drives the water suction cylinder and push plate to move outwards. During this process, the space between the water suction cylinder and the push plate increases, and the water in the cooling pool is sucked into the water suction cylinder. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a cooling device for hot-dip galvanizing proposed in this invention;

[0020] Figure 2 This is a top view of a cooling device for hot-dip galvanizing proposed in this invention;

[0021] Figure 3 This is a front view of a cooling device for hot-dip galvanizing proposed in this invention;

[0022] Figure 4 for Figure 2 Schematic diagram of section AA;

[0023] Figure 5 This is a three-dimensional structural diagram of the gravity transmission component;

[0024] Figure 6 for Figure 5 Enlarged view of section B;

[0025] Figure 7 This is a schematic diagram of the internal structure of an automatic sprinkler system;

[0026] Figure 8 This is a schematic diagram of the internal structure of an eddy current damping component.

[0027] Figure 9 for Figure 3 Enlarged view of section C;

[0028] Figure 10 for Figure 3 Enlarged view of section D in the middle.

[0029] Wherein, 1, cooling pool, 2, fixed baffle, 3, movable baffle, 4, self-weight transmission assembly, 5, placing rack, 6, vortex damping assembly, 7, automatic water spraying assembly, 8, butt joint transmission assembly, 9, damping cylinder, 10, magnetic block, 11, movable rod, 12, buffer spring, 13, connecting spring, 14, transmission gear, 15, transmission rack, 16, transmission shaft, 17, rotating frame, 18, transmission groove, 19, water suction cylinder, 20, push plate, 21, connecting pipe, 22, water suction pipe, 23, spray pipe, 24, drainage channel, 25, V-shaped groove, 26, transmission body, 27, butt joint rack, 28, gear tooth, 29, limiting groove, 30, limiting strip, 31, one-way valve one, 32, one-way valve two.

[0030] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, illustrate the application, and explain the application together with the embodiments of the application, and do not constitute a limitation on the application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0032] In the description of the application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0033] As Figure 1 , Figure 2 , Figure 4As shown in the figure, the application provides a cooling device for hot galvanizing, which comprises a cooling pool 1, the upper walls of the two opposite side walls of the cooling pool 1 are symmetrically provided with fixed baffles 2, the upper walls of the other two opposite side walls of the cooling pool 1 are rotationally provided with movable baffles 3, the movable baffles 3 and the side walls of the cooling pool 1 are connected together through a self-weight transmission assembly 4, the self-weight transmission assemblies 4 are symmetrically arranged on two opposite side walls, two opposite self-weight transmission assemblies 4 are connected together through a placing rack 5, the bottom wall of the cooling pool 1 is provided with a vortex damping assembly 6, the upper end of the vortex damping assembly 6 is connected with the bottom wall of the placing rack 5, the inner side wall of the fixed baffle 2 is provided with an automatic water spraying assembly 7, and the automatic water spraying assembly 7 is connected with the movable baffle 3 through a butt joint transmission assembly 8.

[0034] As shown in the figure, Figure 4 , Figure 8 the vortex damping assembly 6 comprises a damping cylinder 9, a magnetic block 10, a movable rod 11 and a buffer spring 12, the damping cylinder 9 is a cylindrical structure with an open upper end, the damping cylinder 9 is an aluminum cylindrical structure with an open upper end, the movable rod 11 is slidingly arranged in the damping cylinder 9, the lower end of the movable rod 11 is provided with the magnetic block 10, the magnetic block 10 slides in the damping cylinder 9, the lower end of the buffer spring 12 is arranged on the inner bottom wall of the damping cylinder 9, the upper end of the buffer spring 12 is arranged on the magnetic block 10, and the upper end of the movable rod 11 is fixed on the bottom wall of the placing rack 5; when the magnetic block 10 moves up and down in the damping cylinder 9, the damping cylinder 9 cuts the magnetic induction lines, so as to generate an ampere force to hinder the movement of the magnetic block 10, so that the steel pipe slowly descends on the placing rack 5 under the action of the self-weight.

[0035] As shown in the figure, Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 10 the self-weight transmission assembly 4 comprises a transmission gear 14, a transmission rack 15, a transmission shaft 16 and a rotating frame 17, the side walls of the cooling pool 1 are symmetrically provided with transmission grooves 18, the transmission shaft 16 is rotationally arranged on the two opposite side walls of the transmission groove 18, the transmission gear 14 is arranged on the transmission shaft 16, the rotating frame 17 is arranged on the transmission shaft 16, the transmission rack 15 is arranged on the outer side wall of the placing rack 5, the transmission gear 14 is engaged with the transmission rack 15, and the rotating frame 17 is fixedly connected with the lower edge of the movable baffle 3.

[0036] As shown in the figure, Figure 1 , Figure 2 , Figure 4 , Figure 7As shown, the automatic water spraying assembly 7 includes a water suction cylinder 19, a push plate 20, a connecting pipe 21, a connecting spring 13, a water suction pipe 22 and a spray pipe 23. The water suction cylinder 19 is a hollow cavity with one end open. The water suction cylinder 19 slides horizontally along the inner side wall of the fixed baffle 2. The inner end of the push plate 20 is slidingly arranged in the water suction cylinder 19. The connecting spring 13 is arranged in the water suction cylinder 19. The two ends of the connecting spring 13 are arranged on the bottom wall of the water suction cylinder 19 and the push plate 20 respectively. The push plates 20 on the same side are connected together through the connecting pipe 21. The lower wall of the connecting pipe 21 is arrayed with the spray pipes 23. The water suction cylinder 19 is communicated with the lower part of the cooling pool 1 through the water suction pipe 22. The push plate 20 is provided with a drainage channel 24. The inner end of the drainage channel 24 penetrates the push plate 20. The drainage channel 24 is communicated with the connecting pipe 21.

[0037] As shown in Figure 1 , Figure 4 , the butt joint transmission assembly 8 includes a transmission body 26, a butt joint rack 27 and a gear tooth 28. The transmission body 26 is arc-shaped. The upper wall of the transmission body 26 is provided with the gear tooth 28. The butt joint rack 27 is arranged on the lower wall of the water suction cylinder 19. The butt joint rack 27 is engaged with the gear tooth 28.

[0038] As shown in Figure 1 , Figure 3 , Figure 9 , the inner side wall of the fixed baffle 2 is provided with a limiting groove 29. The limiting groove 29 is T-shaped. The side wall of the water suction cylinder 19 is provided with a limiting strip 30. The limiting strip 30 is T-shaped. The limiting strip 30 is slidingly arranged in the limiting groove 29, thereby limiting the horizontal movement of the water suction cylinder 19 along the inner wall of the fixed baffle 2.

[0039] As shown in Figure 4 , the center of the transmission body 26 coincides with the center of the transmission gear 14. The movable baffle 3 drives the transmission body 26 to rotate.

[0040] As shown in Figure 1 , Figure 3 , Figure 4 , Figure 7 , the water suction pipe 22 is provided with a one-way valve one 31. The cooling water can only enter the water suction cylinder 19 from the cooling pool 1. The drainage channel 24 at the inner end of the push plate 20 is provided with a one-way valve two 32. The cooling water can only enter the drainage channel 24 from the water suction cylinder 19.

[0041] As shown in Figure 1 , Figure 4 , Figure 5 , the placing rack 5 is provided with a V-shaped groove 25, thereby facilitating the placement of the steel pipe.

[0042] In use, the cooling pool 1 is filled with cooling water. The steel pipe is placed horizontally across the V-shaped groove 25 of the two placing racks 5 by hoisting equipment. Under the action of gravity, the steel pipe presses down the placing rack 5, the placing rack 5 drives the transmission rack 15 to move downward, the transmission rack 15 meshes with the transmission gear 14, the transmission gear 14 drives the transmission shaft 16 to rotate, the transmission shaft 16 drives the rotating frame 17 to rotate, the rotating frame 17 drives the movable baffle 3 to turn inward, the movable baffle 3 drives the transmission body 26 to rotate inward, the gear teeth 28 on the transmission body 26 mesh with the abutment rack 27, driving the opposite abutment rack 27 to move inward, the abutment rack 27 drives the water suction cylinder 19 to move, the water suction cylinder 19 drives the push plate 20 to move, and the two opposite push plates 20 abut. When the water suction cylinder 19 continues to move towards each other, the push plate 20 enters the water suction cylinder 19, and the water in the water suction cylinder 19 enters the connecting pipe 21 through the drainage channel 24, and is sprayed out from the spray pipe 23, thereby cooling the upper side of the steel pipe. At the same time, the steel pipe descends with the placing rack 5, the placing rack 5 presses down the movable rod 11, the movable rod 11 presses down the magnetic block 10, the magnetic block 10 presses down the buffer spring 12, and the magnetic block 10 slowly descends in the damping cylinder 9. When the spray pipe 23 sprays water on the upper side of the steel pipe, the steel pipe enters the cooling water at the same time.

[0043] After a period of cooling, the steel pipe is hoisted upward, the buffer spring 12 pushes up the magnetic block 10 and the movable rod 11, the movable rod 11 pushes up the placing rack 5, the placing rack 5 drives the transmission rack 15 to move upward, the transmission rack 15 meshes with the transmission gear 14, the transmission gear 14 drives the transmission shaft 16 to rotate, the transmission shaft 16 drives the rotating frame 17 to rotate, the rotating frame 17 drives the movable baffle 3 to turn outward, the movable baffle 3 drives the transmission body 26 to rotate outward, the gear teeth 28 on the transmission body 26 mesh with the abutment rack 27, driving the abutment rack 27 to move outward, the abutment rack 27 drives the water suction cylinder 19 to move outward. At this time, the two push plates 20 are still in the state of abutment, the space between the push plate 20 and the water suction cylinder 19 increases, the water in the cooling pool 1 is sucked into the water suction cylinder 19, and then the water suction cylinder 19 drives the connecting spring 13 to move outward, the connecting spring 13 drives the push plate 20 to move outward, the two opposite push plates 20 are separated, and the push plate 20 drives the connecting pipe 21 to separate, thereby hoisting out the cooled galvanized steel pipe.

[0044] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other presenters can develop. It is also possible, however, that only a single element can be present. Terms such as "a", "an", and "the" are not intended to refer to only a singular form but include the plural form as well. "Including" and like terms are used to indicate the inclusion of one or more elements, but not to the exclusion of other elements. Further, it is to be understood that terms such as "including", "comprising", and "having" are meant to be interpreted dynamically to mean that the terms encompass the item recited and equivalents thereof.

[0045] While the embodiments of the application have been shown and described, it is to be understood that the embodiments described are only by way of example and that modifications, changes, substitutions, and variations can be made to the disclosed embodiments without departing from the spirit of the application.

[0046] The above description of the application and its embodiments is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the application, without creative design, similar structure and embodiments of the technical solution can be developed, which should belong to the protection scope of the application.

Claims

1. A cooling device for hot-dip galvanizing, comprising a cooling tank (1), characterized in that: Fixed baffles (2) are symmetrically provided on the upper walls of the two opposite side walls of the cooling pool (1). Movable baffles (3) are rotatably provided on the upper walls of the other two opposite side walls of the cooling pool (1). The movable baffles (3) are connected to the side walls of the cooling pool (1) by a self-weight transmission assembly (4). The self-weight transmission assemblies (4) are symmetrically provided on the two opposite side walls. The two opposite self-weight transmission assemblies (4) are connected to each other by a placement frame (5). The bottom wall of the cooling pool (1) is provided with an eddy current damping assembly (6). The upper end of the eddy current damping assembly (6) is connected to the bottom wall of the placement frame (5). The inner side wall of the fixed baffle (2) is provided with an automatic water spray assembly (7). The automatic water spray assembly (7) is connected to the movable baffle (3) by a docking transmission assembly (8). The eddy current damping assembly (6) includes a damping cylinder (9), a magnetic block (10), a movable rod (11), and a buffer spring (12). The damping cylinder (9) is a cylindrical structure with an open top. The damping cylinder (9) is an aluminum cylindrical structure with an open top. The movable rod (11) is slidably disposed inside the damping cylinder (9). The lower end of the movable rod (11) is provided with a magnetic block (10). The magnetic block (10) slides inside the damping cylinder (9). The lower end of the buffer spring (12) is disposed on the inner bottom wall of the damping cylinder (9). The upper end of the buffer spring (12) is disposed on the magnetic block (10). The upper end of the movable rod (11) is fixed to the bottom wall of the placement frame (5). The self-weight transmission assembly (4) includes a transmission gear (14), a transmission rack (15), a transmission shaft (16), and a rotating frame (17). The sidewalls of the cooling pool (1) are symmetrically provided with transmission grooves (18). The transmission shaft (16) is rotatably disposed on the two opposite sidewalls of the transmission grooves (18). The transmission gear (14) is disposed on the transmission shaft (16). The rotating frame (17) is disposed on the transmission shaft (16). The transmission rack (15) is disposed on the outer sidewall of the placement frame (5). The transmission gear (14) meshes with the transmission rack (15). The rotating frame (17) is fixedly connected to the lower edge of the movable baffle (3). The automatic water spraying assembly (7) includes a water suction cylinder (19), a push plate (20), a connecting pipe (21), a connecting spring (13), a water suction pipe (22), and a spray pipe (23). The water suction cylinder (19) is a hollow cavity with one open end. The water suction cylinder (19) slides horizontally along the inner wall of the fixed baffle (2). The inner end of the push plate (20) is slidably disposed inside the water suction cylinder (19). The connecting spring (13) is disposed inside the water suction cylinder (19). The two ends of the connecting spring (13) are respectively Located on the bottom wall of the suction cylinder (19) and the push plate (20), the push plates (20) on the same side are connected together by a connecting pipe (21). The lower wall of the connecting pipe (21) is provided with a spray pipe (23). The suction cylinder (19) is connected to the lower part of the cooling pool (1) by a suction pipe (22). The push plate (20) is provided with a drainage channel (24). The drainage channel (24) passes through the inner end of the push plate (20). The drainage channel (24) is connected to the connecting pipe (21). The docking transmission assembly (8) includes a transmission body (26), a docking rack (27), and gear teeth (28). The transmission body (26) is arc-shaped, and the upper wall of the transmission body (26) is provided with gear teeth (28). The docking rack (27) is located on the lower wall of the water suction cylinder (19), and the docking rack (27) meshes with the gear teeth (28).

2. The cooling device for hot-dip galvanizing according to claim 1, characterized in that: The inner side wall of the fixed baffle (2) is provided with a limiting groove (29), the limiting groove (29) is T-shaped, and the side wall of the water suction cylinder (19) is provided with a limiting strip (30), the limiting strip (30) is T-shaped, and the limiting strip (30) is slidably disposed in the limiting groove (29).

3. A cooling device for hot-dip galvanizing according to claim 2, characterized in that: The center of the transmission body (26) coincides with the center of the transmission gear (14).

4. A cooling device for hot-dip galvanizing according to claim 3, characterized in that: The suction pipe (22) is equipped with a one-way valve (31), and the drainage channel (24) at the inner end of the push plate (20) is equipped with a one-way valve (32).

5. A cooling device for hot-dip galvanizing according to claim 4, characterized in that: The placement rack (5) is provided with a V-shaped groove (25).

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