Device for adjusting angle of air knife in zinc pot process section of galvanizing line

Abstract

The utility model discloses an air knife angle adjusting device for a zinc pot process section of a galvanizing line, which belongs to the technical field of air knives and comprises an air knife cross beam. The air knife beam is connected with an angle adjusting assembly, and the angle adjusting assembly is connected with an air knife used for purging zinc liquid adhering to strip steel. The hand wheel is rotated, the hand wheel drives the lead screw lifter through the transmission shaft and the coupler, the output end of the lead screw lifter drives the speed reducer screw to rotate, the speed reducer screw drives the left end or the right end of the air knife to move up and down, and therefore the angle of the air knife is flexibly changed, and the cutting effect is changed. Due to the fact that the lead screw lifting machine is moderate in speed and high in transmission efficiency, the acting force of vertical movement is increased, and the phenomenon that a copper sleeve in an air knife is clamped when the angle is adjusted is avoided; in addition, the device is simple in structure, low in installation cost and convenient to maintain off line, the difficulty of installation and adjustment caused by using a universal coupling is avoided, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air knives, in particular to a device for adjusting the angle of an air knife in a zinc pot process section of a galvanizing line. Background Art

[0002] The galvanizing process in the hot-dip galvanizing line is that the strip passes through the immersion roller and reaches the stabilizing roller. After coming out of the stabilizing roller, the thickness of the zinc layer is purged with an air knife. The working principle of the air knife is to purge the zinc liquid adhered to the strip. After the strip leaves the zinc pot, the upward process, part of the zinc liquid adhered to its surface flows back to the zinc pot. The air knife is the core to ensure the quality of the coating. The coating quality is mainly affected by the smoothness of the inner wall of the air knife, the lip shape of the air knife, the gap of the air knife, the position of the air knife, the angle of the air knife, the pressure of the air knife, etc. In the production process, if the angle of the air knife is unreasonable, it is easy to cause problems such as horizontal stripes on the surface of the strip, over-galvanizing of the edge, and air knife marks.

[0003] For example, Chinese patent CN218146896U proposes an air knife installation structure for a galvanizing line, which is installed on one side of the zinc pot outlet of the galvanizing line and includes an air knife. The air knife includes a knife lip for blowing air on the galvanized surface of the steel strip and an air flow input port connected to the air outlet of the fan, wherein the air inlet of the fan is connected to a nitrogen gas supply source; thereby avoiding oxidation between the blowing air flow and the zinc layer.

[0004] However, the above patent is not convenient for adjusting the angle of the air knife. Even if various factors of the air knife are adjusted in place, the uniform air flow is only stable within a very small range from the knife lip. Therefore, in actual production, the air knife angle still needs to be adjusted online.

[0005] Based on this, the utility model designs a device for adjusting the air knife angle of a zinc pot process section of a galvanizing line to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a device for adjusting the angle of an air knife in a zinc pot process section of a galvanizing line.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A device for adjusting the air knife angle of a zinc pot process section of a galvanizing line, comprising an air knife crossbeam;

[0009] The air knife crossbeam is connected with an angle adjustment component, and the angle adjustment component is connected with an air knife used for blowing away zinc liquid adhered to the strip steel;

[0010] The angle adjustment component connection includes a support rod, an upper support rod joint, a cylindrical plate, a reducer screw, a coupling, a transmission shaft, a handwheel, a welding base plate, a lower support rod joint and a screw lifter. The left and right ends of the air knife are respectively fixedly connected to the welding base plate, the upper end of the welding base plate is fixedly connected to the lower support rod joint, the upper and lower ends of the support rod are respectively fixedly connected to the upper support rod joint and the lower support rod joint, the upper end of the upper support rod joint is fixedly connected to the cylindrical plate, the air knife crossbeam is fixedly connected to a left and right symmetrical screw lifter, the output ends of the screw lifter are fixedly connected to the reducer screw, the reducer screw is threadedly connected to the cylindrical plate, the screw lifter is fixedly connected to the transmission shaft through a coupling, and the transmission shaft is fixedly connected to a handwheel for driving the screw lifter.

[0011] Furthermore, the lower support rod joint is fixedly connected to a cylindrical pin, and the cylindrical pin is fixedly connected to a welding base plate.

[0012] Furthermore, the upper support rod joint is fixedly connected to the cylindrical pin, and the cylindrical pin is fixedly connected to the cylindrical plate.

[0013] Furthermore, at least one set of seat bearings is fixedly connected to the upper end of the air knife beam, and the transmission shaft is rotatably connected to the seat bearings.

[0014] Furthermore, the seat bearing is a UC206 model bearing.

[0015] Furthermore, the screw lift uses a SWL2.5T model lift.

[0016] Furthermore, the welding base plate is made of SUS304 stainless steel.

[0017] The utility model has the following technical effects:

[0018] When the utility model needs to adjust the angle of the air knife, the hand wheel is turned, and the hand wheel drives the screw lifter through the transmission shaft and the coupling, and the output end of the screw lifter drives the reducer screw to rotate, and the reducer screw drives the cylindrical plate to move up and down, and the cylindrical plate drives the left or right end of the air knife to move up and down through the upper support rod joint, the support rod, the lower support rod joint and the welding bottom plate, thereby realizing flexible change of the angle of the air knife, and then changing the cutting effect, the cutting direction of the blade is more accurate, and the cutting depth and width will be more uniform, thereby achieving the purpose of optimizing production; the angle of the air knife is adjusted by driving the screw lifter, because the speed of the screw lifter is moderate and the transmission efficiency is high, the force of the up and down movement is increased, and the phenomenon of the copper sleeve in the air knife being stuck when adjusting the angle is avoided; in addition, the utility model has a simple structure, low installation cost, and convenient offline maintenance, avoids the difficulties of installation and adjustment caused by the use of universal couplings, and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the angle adjustment component of the utility model;

[0021] Figure 2 The utility model is a schematic structural diagram of a device for adjusting the air knife angle in a zinc pot process section of a galvanizing line.

[0022] The numbers in the figure represent:

[0023] 1. Air knife beam; 2. Air knife; 3. Support rod; 4. Upper support rod joint; 5. Cylindrical plate; 6. Reducer screw; 7. Coupling; 8. Drive shaft; 9. Hand wheel; 10. Welding base plate; 11. Lower support rod joint; 12. Screw lift. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model is further described below in conjunction with embodiments.

[0026] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0027] Example 1

[0028] Please refer to the instruction manual Figure 1-2 , a device for adjusting the air knife angle of a zinc pot process section of a galvanizing line, comprising an air knife beam 1;

[0029] An angle adjustment component is connected to the air knife beam 1, and the angle adjustment component is connected to the air knife 2 used for blowing away the zinc liquid adhered to the strip steel;

[0030] The angle adjustment component connection includes a support rod 3, an upper support rod joint 4, a cylindrical plate 5, a reducer screw 6, a coupling 7, a transmission shaft 8, a handwheel 9, a welding base plate 10, a lower support rod joint 11 and a screw lift 12. The left and right ends of the air knife 2 are respectively fixedly connected to the welding base plate 10, and the upper end of the welding base plate 10 is fixedly connected to the lower support rod joint 11. The upper and lower ends of the support rod 3 are respectively fixedly connected to the upper support rod joint 4 and the lower support rod joint 11, and the upper end of the upper support rod joint 4 is fixedly connected to the cylindrical plate 5. The air knife crossbeam 1 is fixedly connected with a left-right symmetrical screw lift 12, and the output end of the screw lift 12 is fixedly connected with the reducer screw 6, which is threadedly connected to the cylindrical plate 5. The screw lift 12 is fixedly connected to the transmission shaft 8 through the coupling 7, and the transmission shaft 8 is fixedly connected with a handwheel 9 for driving the screw lift 12.

[0031] The lower support rod joint 11 is fixedly connected to the cylindrical pin, and the cylindrical pin is fixedly connected to the welding base plate 10;

[0032] The upper support rod joint 4 is fixedly connected to the cylindrical pin, and the cylindrical pin is fixedly connected to the cylindrical plate 5;

[0033] The upper end of the air knife beam 1 is fixedly connected with at least one set of seat bearings, and the transmission shaft 8 is rotatably connected with the seat bearings;

[0034] The seat bearing is a UC206 model bearing;

[0035] The screw lift 12 uses a SWL2.5T model lift;

[0036] The welding base plate 10 is made of SUS304 stainless steel;

[0037] When the angle of the air knife 2 needs to be adjusted, the hand wheel 9 is turned, and the hand wheel 9 drives the screw lift 12 through the transmission shaft 8 and the coupling 7. The output end of the screw lift 12 drives the reducer screw 6 to rotate, and the reducer screw 6 drives the cylindrical plate 5 to move up and down. The cylindrical plate 5 drives the left or right end of the air knife 2 to move up and down through the upper support rod joint 4, the support rod 3, the lower support rod joint 11 and the welding base plate 10, thereby realizing flexible change of the angle of the air knife 2, and then changing the cutting effect, the cutting direction of the blade is more accurate, and the cutting depth and width will be more uniform, thereby achieving the purpose of optimizing production; the angle of the air knife 2 is adjusted by driving the screw lift 12. Since the speed of the screw lift 12 is moderate and the transmission efficiency is high, the force of the up and down movement is increased, and the phenomenon of the copper sleeve in the air knife 2 being stuck when adjusting the angle is avoided; in addition, the utility model has a simple structure, low installation cost, and convenient offline maintenance, avoids the difficulties of installation and adjustment caused by the use of universal couplings, and reduces maintenance costs.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for adjusting the angle of an air knife in a zinc pot process section of a galvanizing line, comprising an air knife beam (1), characterized in that: The air knife crossbeam (1) is connected to an angle adjustment component, and the angle adjustment component is connected to an air knife (2) used for blowing away zinc liquid adhered to the steel strip; The angle adjustment assembly connection comprises a support rod (3), an upper support rod joint (4), a cylindrical plate (5), a reducer screw (6), a coupling (7), a transmission shaft (8), a hand wheel (9), a welding base plate (10), a lower support rod joint (11) and a screw lifter (12); the left and right ends of the air knife (2) are respectively fixedly connected to the welding base plate (10); the upper end of the welding base plate (10) is fixedly connected to the lower support rod joint (11); the upper and lower ends of the support rod (3) are respectively connected to the upper support rod joint (4) and the lower support rod joint (11); The support rod joint (11) is fixedly connected, the upper end of the upper support rod joint (4) is fixedly connected to a cylindrical plate (5), the air knife cross beam (1) is fixedly connected to a left-right symmetrical screw lift (12), the output end of the screw lift (12) is fixedly connected to a reducer screw (6), the reducer screw (6) is threadedly connected to the cylindrical plate (5), the screw lift (12) is fixedly connected to the transmission shaft (8) through a coupling (7), and the transmission shaft (8) is fixedly connected to a hand wheel (9) for driving the screw lift (12).

2. The device for adjusting the air knife angle of the zinc pot process section of the galvanizing line according to claim 1 is characterized in that: The lower support rod joint (11) is fixedly connected to a cylindrical pin, and the cylindrical pin is fixedly connected to a welding base plate (10).

3. The device for adjusting the air knife angle of the zinc pot process section of the galvanizing line according to claim 2 is characterized in that: The upper support rod joint (4) is fixedly connected to the cylindrical pin, and the cylindrical pin is fixedly connected to the cylindrical plate (5).

4. The device for adjusting the air knife angle of the zinc pot process section of the galvanizing line according to claim 3 is characterized in that: At least one set of seat bearings is fixedly connected to the upper end of the air knife crossbeam (1), and the transmission shaft (8) is rotatably connected to the seat bearings.

5. The device for adjusting the air knife angle of the zinc pot process section of the galvanizing line according to claim 4 is characterized in that: The seat bearing is a UC206 model bearing.

6. The device for adjusting the air knife angle of the zinc pot process section of the galvanizing line according to claim 5 is characterized in that: The screw lift (12) is a SWL2.5T model lift.

7. The device for adjusting the air knife angle of the zinc pot process section of the galvanizing line according to claim 6 is characterized in that: The welding base plate (10) is made of SUS304 stainless steel.

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