Cooling device for hot galvanizing

Abstract

The invention belongs to the technical field of hot galvanizing, and particularly discloses a cooling device for hot galvanizing, which comprises a cooling tank, fixed baffles are symmetrically arranged on the upper walls of two opposite side walls of the cooling tank, and movable baffles are rotatably arranged on the upper walls of the other two opposite side walls of the cooling tank. The movable baffle and the side wall of the cooling pond are connected together through self-weight transmission assemblies, the self-weight transmission assemblies are symmetrically arranged on the two opposite side walls in pairs, the two opposite self-weight transmission assemblies are connected together through a containing frame, an eddy current damping assembly is arranged on the bottom wall of the cooling pond, and the upper end of the eddy current damping assembly is connected with the bottom wall of the containing frame. An automatic water spraying assembly is arranged on the inner side wall of the fixed baffle. The movable baffle is closed through the dead weight of the steel pipe, cooling water is prevented from splashing out, when the lower surface of the steel pipe enters the cooling water, the cooling water is automatically sprayed to the upper surface of the steel pipe, the overall temperature difference of the steel pipe is reduced, and zinc coating cracking caused by residual stress is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of hot-dip galvanizing, and in particular relates to a cooling device for hot-dip galvanizing. Background Art

[0002] Hot-dip galvanizing, also known as hot-dip galvanizing or hot-dip galvanizing, involves immersing derusted steel parts in molten zinc at approximately 500°C, depositing a zinc layer on the surface of the steel components for corrosion protection. Steel is hot when removed from the molten zinc bath and requires cooling. Water cooling is a common cooling method that reduces the steel temperature, inhibits any adverse reactions between the newly formed coating and the atmosphere, and allows the hot-dip galvanized product to stabilize quickly, ensuring product quality.

[0003] When cooling the hot-dip galvanized steel pipe, the steel pipe is lifted by hoisting equipment and then immersed in the cooling pool. Due to the long length of the steel pipe, the steel pipe cannot be kept horizontal during hoisting, so that one end of the steel pipe enters the cooling pool first, and the cooling of the steel pipe is uneven. In the process of immersing the steel pipe in the cooling pool, in order to avoid splashing of cooling water, the steel pipe will be slowly immersed in the cooling water. The temperature difference between the lower and upper sides of the steel pipe will cause residual stress, causing the galvanized layer to crack.

[0004] Therefore, a cooling device for hot-dip galvanizing is needed to solve the above problems. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a cooling device for hot-dip galvanizing, which uses the deadweight of the steel pipe to close the movable baffle to prevent the cooling water from splashing out. When the lower surface of the steel pipe enters the cooling water, the cooling water is automatically sprayed on the upper surface of the steel pipe, thereby reducing the overall temperature difference of the steel pipe and avoiding cracking of the galvanized layer due to residual stress.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a cooling device for hot-dip galvanizing, comprising a cooling pool, wherein fixed baffles are symmetrically provided on the upper walls of the two opposite side walls of the cooling pool, and movable baffles are rotatably provided on the upper walls of the other two opposite side walls of the cooling pool, and the movable baffles are connected to the side walls of the cooling pool through a self-weight transmission assembly, and the self-weight transmission assemblies are symmetrically arranged on the two opposite side walls in pairs, and the two opposite self-weight transmission assemblies are connected together through a placement rack, and the bottom wall of the cooling pool is provided with an eddy current damping assembly, and the upper end of the eddy current damping assembly is connected to the bottom wall of the placement rack, and the inner side wall of the fixed baffle is provided with an automatic water spraying assembly, and the automatic water spraying assembly is connected to the movable baffle through a docking transmission assembly.

[0007] Furthermore, the eddy current damping assembly includes 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 slidably arranged in the damping cylinder. The lower end of the movable rod is provided with a magnetic block, and 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 to the bottom wall of the placement rack.

[0008] Furthermore, the self-weight transmission assembly includes 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 in pairs. 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 placement frame. The transmission gear is meshed with the transmission rack, and the rotating frame is fixedly connected to the lower edge of the movable baffle.

[0009] Furthermore, the automatic water sprinkler assembly includes a water suction cylinder, a push plate, a connecting pipe, a connecting spring, a water suction pipe and a nozzle. The water suction cylinder is a hollow cavity with an open end. The water suction cylinder slides horizontally along the inner wall of the fixed baffle. The inner end of the push plate is slidably arranged in the water suction cylinder. The connecting spring is arranged in the water suction cylinder. The two ends of the connecting spring are respectively arranged on the bottom wall of the water suction cylinder and the push plate. The push plates on the same side are connected together by a connecting pipe. The lower wall array of the connecting pipe is provided with a nozzle. The water suction cylinder is connected to the lower part of the cooling pool through the water suction pipe. A drainage channel is provided in the push plate. The drainage channel passes through the inner end of the push plate. The drainage channel is connected to the connecting pipe.

[0010] Furthermore, the docking transmission assembly includes a transmission body, a docking rack and gear teeth. The transmission body is arc-shaped, the upper wall of the transmission body is provided with gear teeth, the docking rack is provided on the lower wall of the water suction cylinder, and the docking rack is engaged with the gear teeth.

[0011] Furthermore, a limiting groove is provided on the inner side wall of the fixed baffle, and the limiting groove is T-shaped. A limiting bar is provided on the side wall of the water suction cylinder, and the limiting bar is T-shaped. The limiting bar is slidably arranged in the limiting groove.

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

[0013] Furthermore, a one-way valve 1 is provided on the water suction pipe, and a one-way valve 2 is provided at the drainage channel at the inner end of the push plate.

[0014] Furthermore, a V-shaped groove is provided on the placement rack.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: 1. Under the action of its own weight, the steel pipe presses down the placement rack, which drives the transmission rack to move downward. The transmission rack drives the transmission gear, transmission shaft, rotating rack and movable baffle to rotate. When the steel pipe is immersed in the cooling water, the movable baffle plays a shielding role to prevent the cooling water from splashing out. 2. When the movable baffle flips inward, it drives the transmission body to rotate, and 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. When the push plate docks, the cooling water in the water suction cylinder is sprayed out through the nozzle 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, reducing the temperature difference between the upper and lower sides of the steel pipe, thereby avoiding cracking of the galvanized layer due to residual stress. 3. After cooling is completed, the steel pipe is lifted upward and the movable baffle is flipped outward. The movable baffle drives the transmission body to rotate outward, and the docking gear drives the water suction cylinder and the push plate to move outward. 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a cooling device for hot-dip galvanizing proposed by the present invention; Figure 2 This is a top view of a cooling device for hot-dip galvanizing proposed by the present invention; Figure 3 This is a front view of a cooling device for hot-dip galvanizing proposed by the present invention; Figure 4 for Figure 2 Schematic diagram of the middle AA section; Figure 5 It is a schematic diagram of the three-dimensional structure of the deadweight transmission component; Figure 6 for Figure 5 Enlarged view of part B; Figure 7 Schematic diagram of the internal structure of the automatic sprinkler assembly; Figure 8 Schematic diagram of the internal structure of the eddy current damping component; Figure 9 for Figure 3 Enlarged view of part C in the middle; Figure 10 for Figure 3 Enlarged view of part D in the middle.

[0017] Among them, 1. cooling pool, 2. fixed baffle, 3. movable baffle, 4. deadweight transmission assembly, 5. placement rack, 6. eddy current damping assembly, 7. automatic water spraying assembly, 8. docking 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 rack, 18. transmission groove, 19. water suction cylinder, 20. push plate, 21. connecting pipe, 22. water suction pipe, 23. nozzle, 24. drainage channel, 25. V-shaped groove, 26. transmission body, 27. docking rack, 28. gear teeth, 29. limit groove, 30. limit strip, 31. one-way valve 1, 32. one-way valve 2.

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0021] like Figure 1 、 Figure 2 、 Figure 4 As shown, the present invention proposes a cooling device for hot-dip galvanizing, comprising a cooling pool 1, wherein fixed baffles 2 are symmetrically provided on the upper walls of the two opposite side walls of the cooling pool 1, and movable baffles 3 are rotatably provided on the upper walls of the other two opposite side walls of the cooling pool 1, and the movable baffles 3 are connected to the side walls of the cooling pool 1 through a self-weight transmission assembly 4, and the self-weight transmission assemblies 4 are symmetrically arranged in pairs on the two opposite side walls, and the two opposite self-weight transmission assemblies 4 are connected together through a placement rack 5, and the bottom wall of the cooling pool 1 is provided with an eddy current damping assembly 6, and the upper end of the eddy current damping assembly 6 is connected to the bottom wall of the placement rack 5, and 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 to the movable baffle 3 through a docking transmission assembly 8.

[0022] like Figure 4 、 Figure 8 As shown, 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 upper end. The damping cylinder 9 is an aluminum cylindrical structure with an open upper end. The movable rod 11 is slidably arranged in the damping cylinder 9. The lower end of the movable rod 11 is provided with a 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. The upper end of the movable rod 11 is fixed to the bottom wall of the placement rack 5. When the magnetic block 10 moves up and down in the damping cylinder 9, the damping cylinder 9 cuts the magnetic lines of force, thereby generating an Ampere force that hinders the movement of the magnetic block 10, so that under the action of its own weight, the steel pipe slowly descends on the placement rack 5.

[0023] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 10 As shown, 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 side walls of the cooling pool 1 are symmetrically provided with transmission grooves 18 in pairs. The transmission shaft 16 is rotatably 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 wall of the placement frame 5. The transmission gear 14 is engaged with the transmission rack 15. The rotating frame 17 is fixedly connected to the lower edge of the movable baffle 3.

[0024] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 7 As 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 nozzle 23. The water suction cylinder 19 is a hollow cavity with an 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 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 respectively arranged on the bottom wall of the water 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 array of the connecting pipe 21 is provided with a nozzle 23. The water suction cylinder 19 is connected to the lower part of the cooling pool 1 through the water suction pipe 22. A drainage channel 24 is provided in the push plate 20. The drainage channel 24 passes through the inner end of the push plate 20, and the drainage channel 24 is connected to the connecting pipe 21.

[0025] like Figure 1 、 Figure 4As shown, 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 provided on the lower wall of the water suction cylinder 19, and the docking rack 27 is engaged with the gear teeth 28.

[0026] like Figure 1 、 Figure 3 、 Figure 9 As shown, the inner side wall of the fixed baffle 2 is provided with a limiting groove 29, and the limiting groove 29 is T-shaped. The side wall of the water suction cylinder 19 is provided with a limiting bar 30, and the limiting bar 30 is T-shaped. The limiting bar 30 is slidably arranged in the limiting groove 29 to limit the horizontal movement of the water suction cylinder 19 along the inner wall of the fixed baffle 2.

[0027] like Figure 4 The center of the transmission body 26 coincides with the center of the transmission gear 14, and the movable baffle 3 drives the transmission body 26 to rotate.

[0028] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 7 As shown, a one-way valve 31 is provided on the water suction pipe 22, and cooling water can only enter the water suction cylinder 19 from the cooling pool 1. A one-way valve 32 is provided at the drainage channel 24 at the inner end of the push plate 20, and cooling water can only enter the drainage channel 24 from the water suction cylinder 19.

[0029] like Figure 1 、 Figure 4 、 Figure 5 As shown, the placement rack 5 is provided with a V-shaped groove 25 for facilitating the placement of steel pipes.

[0030] During specific use, the cooling pool 1 is filled with cooling water, and the steel pipe is placed across the V-groove 25 of the two placement racks 5 by using a lifting device. Under the action of its own weight, the steel pipe presses the placement rack 5 downward, and the placement rack 5 drives the transmission rack 15 to move downward, and the transmission rack 15 is engaged with the transmission gear 14. The transmission gear 14 drives the transmission shaft 16 to rotate, and the transmission shaft 16 drives the rotating rack 17 to rotate. The rotating rack 17 drives the movable baffle 3 to flip inward, and the movable baffle 3 drives the transmission body 26 to rotate inward. The gear teeth 28 on the transmission body 26 are engaged with the docking rack 27, driving the relative docking rack 27 to move inward, and the docking rack 27 drives the water suction cylinder 1 9 moves, the water absorption cylinder 19 drives the push plate 20 to move, and the two opposite push plates 20 dock. When the water absorption cylinder 19 continues to move toward each other, the push plate 20 enters the water absorption cylinder 19, and the water in the water absorption cylinder 19 enters the connecting pipe 21 through the drainage channel 24, and is then sprayed out from the nozzle 23 to cool the upper side of the steel pipe. At the same time, the steel pipe descends with the placement rack 5, the placement rack 5 presses down the movable rod 11, the movable rod 11 presses down the magnetic block 10, and the magnetic block 10 presses down the buffer spring 12. When the magnetic block 10 descends in the damping cylinder 9, the magnetic block 10 slowly descends in the damping cylinder 9. When the nozzle 23 sprays water on the upper side of the steel pipe, the steel pipe enters the cooling water at the same time. After cooling for a period of time, the steel pipe is lifted upward, the buffer spring 12 pushes the magnetic block 10 and the movable rod 11 upward, the movable rod 11 pushes the placement frame 5 upward, the placement frame 5 drives the transmission rack 15 to move upward, the transmission rack 15 is engaged 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 flip outward, the movable baffle 3 drives the transmission body 26 to rotate outward, and the gear teeth 28 on the transmission body 26 engage with the docking gears. The bars 27 are engaged, driving the docking rack 27 to move outward, and the docking rack 27 drives the water suction cylinder 19 to move outward. At this time, the two push plates 20 are still in the docking state, and the space between the push plates 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, and the connecting spring 13 drives the push plate 20 to move outward. The two opposing push plates 20 are separated, and the push plate 20 drives the connecting pipe 21 to separate, thereby hanging out the cooled galvanized steel pipe.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

[0033] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A cooling device for hot-dip galvanizing, comprising a cooling pool (1), characterized in that: The upper walls of the two opposite side walls of the cooling pool (1) are symmetrically provided with fixed baffles (2), and the upper walls of the other two opposite side walls of the cooling pool (1) are rotatably 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 component (4). The self-weight transmission components (4) are symmetrically arranged on the two opposite side walls. The two opposite self-weight transmission components (4) are connected together through a placement rack (5). The bottom wall of the cooling pool (1) is provided with an eddy current damping component (6), and the upper end of the eddy current damping component (6) is connected to the bottom wall of the placement rack (5). The inner side wall of the fixed baffle (2) is provided with an automatic water spraying component (7), and the automatic water spraying component (7) is connected to the movable baffle (3) through a docking transmission component (8).

2. A cooling device for hot-dip galvanizing according to claim 1, characterized in that: 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 upper end open. The damping cylinder (9) is an aluminum cylindrical structure with an upper end open. The movable rod (11) is slidably arranged in the damping cylinder (9). The lower end of the movable rod (11) is provided with a 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). The upper end of the movable rod (11) is fixed to the bottom wall of the placement rack (5).

3. The cooling device for hot-dip galvanizing according to claim 2, characterized in that: 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 side walls of the cooling pool (1) are symmetrically provided with transmission grooves (18). The transmission shaft (16) is rotatably arranged on 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 placement frame (5). The transmission gear (14) is meshed with the transmission rack (15). The rotating frame (17) is fixedly connected to the lower edge of the movable baffle (3).

4. A cooling device for hot dip galvanizing according to claim 3, characterized in that: The automatic water spraying assembly (7) comprises a water suction cylinder (19), a push plate (20), a connecting pipe (21), a connecting spring (13), a water suction pipe (22) and a nozzle (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 slidably 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 respectively It is arranged on the bottom wall of the water suction cylinder (19) and the push plate (20), and the push plates (20) on the same side are connected together through a connecting pipe (21). The lower wall array of the connecting pipe (21) is provided with a nozzle (23). The water suction cylinder (19) is connected to the lower part of the cooling pool (1) through the water suction pipe (22). A drainage channel (24) is provided in the push plate (20), and 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).

5. A cooling device for hot dip galvanizing according to claim 4, characterized in that: The docking transmission assembly (8) comprises a transmission body (26), a docking rack (27) and gear teeth (28); the transmission body (26) is arc-shaped; the upper wall of the transmission body (26) is provided with gear teeth (28); the docking rack (27) is provided on the lower wall of the water suction cylinder (19); the docking rack (27) is engaged with the gear teeth (28).

6. A cooling device for hot dip galvanizing according to claim 5, characterized in that: The inner side wall of the fixed baffle (2) is provided with a limiting groove (29), and the limiting groove (29) is T-shaped. The side wall of the water suction cylinder (19) is provided with a limiting strip (30), and the limiting strip (30) is T-shaped. The limiting strip (30) is slidably arranged in the limiting groove (29).

7. A cooling device for hot dip galvanizing according to claim 6, characterized in that: The center of the transmission body (26) coincides with the center of the transmission gear (14).

8. The cooling device for hot-dip galvanizing according to claim 7, characterized in that: A one-way valve (31) is provided on the water suction pipe (22), and a one-way valve (32) is provided at the drainage channel (24) at the inner end of the push plate (20).

9. The cooling device for hot-dip galvanizing according to claim 8, characterized in that: The placement rack (5) is provided with a V-shaped groove (25).

Images