A hot-dip galvanizing air knife adjustment device

Abstract

This utility model relates to the field of hot-dip galvanizing air knife technology, and discloses a hot-dip galvanizing air knife adjustment device. The device includes an air knife body and a wire-passing hole for a steel wire to pass through, located inside the air knife body. A first opening and a second opening are respectively provided at both ends of the air knife body. An air passage is provided inside the air knife body. This utility model utilizes 3D printing technology to comprehensively and precisely optimize the annular airflow within complex internal cavities. Through precise design and printing of the cavity structure, turbulence and energy loss during airflow are reduced, resulting in a smoother and more uniform airflow, further improving airflow stability. A rotating rod drives a turntable and a rotating shaft to rotate, which in turn drives a gear. The elasticity of a spring achieves initial positioning of the gear and rotating shaft, and a tightening screw provides secondary positioning. This allows for precise adjustment of the air knife body position to meet different production needs.

Description

Technical Field

[0001] This utility model relates to the field of hot-dip galvanizing air knife technology, specifically a hot-dip galvanizing air knife adjustment device. Background Technology

[0002] A galvanizing air knife is a technique that uses high-pressure nitrogen gas ejected from an air nozzle to blow away a portion of the molten zinc brought up during hot-dip galvanizing, resulting in a smoother, less bumpy surface of the galvanized layer. During operation, the nitrogen gas emitted by the air knife experiences decreasing kinetic energy due to air resistance and the obstruction of the molten zinc, causing the galvanized layer to be thinner near the air nozzle and thicker further away.

[0003] Currently, the hot-dip galvanizing industry generally uses mechanical air knives to control zinc layer thickness. Traditional air knives are manufactured using integral milling or welding processes, with fixed air slit widths and spray angles, making it difficult to adapt to hot-dip galvanized products with different specifications. At the same time, the internal flow channels of mechanically processed air knives have seams and burrs, causing airflow turbulence and resulting in large fluctuations in zinc layer thickness. Furthermore, the unstable annular airflow and wire speed can easily induce wire vibration, further increasing the scrap rate and severely restricting the efficiency and economic benefits of hot-dip galvanizing production. Utility Model Content

[0004] The purpose of this invention is to provide a hot-dip galvanizing air knife adjustment device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hot-dip galvanizing air knife adjustment device, comprising an air knife body, and further comprising:

[0006] A wire-passing hole is provided for the steel wire to pass through the air knife body, which is opened inside the air knife body. A first opening and a second opening are respectively opened at both ends of the air knife body, and an air passage is provided inside the air knife body.

[0007] A fixed frame supporting the air knife body, wherein a connecting frame for limiting the position of the air knife body is installed on the fixed frame, and an adjusting component for adjusting the position of the air knife body is installed on the connecting frame.

[0008] Preferably, the air knife body is designed as an integral piece of hot-dip galvanized material.

[0009] Preferably, the wire hole is circular and has a smooth inner wall.

[0010] Preferably, the diameters of the first opening and the second opening are designed according to the specifications of the steel wire, and both are tapered.

[0011] Preferably, the air passage includes an air cavity and an air slit formed inside the air knife body, and the air cavity and air slit are interconnected.

[0012] Preferably, the connecting frame is rotatably mounted on the fixed frame, and the air knife body is mounted on the connecting frame by bolts.

[0013] Preferably, the adjusting assembly includes a rotating shaft fixedly mounted on a connecting frame, a gear fixedly mounted on the rotating shaft, a fixing ring fixedly mounted on the fixing frame, a spring plate fixedly mounted on the inner wall of the fixing ring, and the rotating shaft rotatably mounted on the fixing frame.

[0014] Preferably, a turntable is fixedly mounted on the rotating shaft, and a fastening screw and a rotating rod are threaded onto the turntable.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention utilizes 3D printing technology to comprehensively and precisely optimize the annular airflow within complex internal cavities. Through precise design and printing of the cavity structure, turbulence and energy loss during airflow are reduced, resulting in a smoother and more uniform flow, further enhancing airflow stability. A rotating rod drives a turntable and shaft, which in turn rotates the gears. The elasticity of a spring provides initial positioning of the gears and shaft, while tightening the fastening screw provides secondary positioning. This allows for precise adjustment of the air knife's position to meet diverse production needs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the air knife body of this utility model;

[0019] Figure 3 This is a schematic diagram of the airway structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the fixing frame and connecting frame structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the adjustment component structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the fixing ring and gear structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the fixing ring structure of this utility model.

[0024] In the diagram: 1. Air knife body; 2. Wire hole; 3. First opening; 4. Second opening; 5. Air passage; 51. Air chamber; 52. Air gap; 6. Fixing frame; 7. Connecting frame; 8. Adjusting component; 81. Rotating shaft; 82. Gear; 83. Fixing ring; 84. Spring; 9. Turntable; 10. Fastening screw; 11. Rotating rod. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] Please see Figure 1-7 As shown, a hot-dip galvanizing air knife adjustment device includes an air knife body 1, and further includes: a wire hole 2 for passing a steel wire through the air knife body 1, which is opened inside the air knife body 1; a first opening 3 and a second opening 4 are respectively opened at both ends of the air knife body 1; an air passage 5 is provided inside the air knife body 1; a fixing frame 6 for supporting the air knife body 1; a connecting frame 7 for limiting the position of the air knife body 1 is installed on the fixing frame 6; and an adjustment component 8 for adjusting the position of the air knife body 1 is installed on the connecting frame 7.

[0027] It should be noted that the 3D printing air knife improves airflow uniformity by optimizing the integrated design of the annular air channel, wire channel and gas channel, controlling the coating thickness fluctuation within ±10mm, and achieving a yield of 97%. At the same time, the equipment is compatible with steel wire specifications of 1.85~3.05mm, and the overall production efficiency is improved by more than 10%.

[0028] The air knife body 1 is integrally molded from hot-dip galvanized material; the wire guide hole 2 is circular with a smooth inner wall; the diameters of the first opening 3 and the second opening 4 are designed according to the steel wire specifications and are both conical; the air channel 5 includes an air chamber 51 and an air slit 52 inside the air knife body 1, which are interconnected; the annular air channel 5 is the core flow channel inside the air knife, integrally molded using 3D printing technology to form a stable airflow. This design eliminates the airflow turbulence problem caused by welds or joints in traditional machining air knives, ensuring the uniformity and stability of the airflow. The wire guide hole 2 in the air knife is designed to be circular to ensure the stability of the steel wire during passage. The smooth inner wall of the channel reduces friction between the steel wire and the air knife, preventing scratches on the steel wire surface. The gas channel connects the gas source and the annular air channel, responsible for introducing nitrogen into the air knife. The channel design needs to consider the smoothness of gas flow and the minimization of pressure loss. By precisely controlling the flow rate and pressure of nitrogen, the gas channel achieves dynamic adjustment of the annular airflow intensity. The 3D printed air knife can be made with different apertures according to the specifications of the steel wire, so that one specification corresponds to one air knife. The aperture of the air knife is 6-8mm, and the steel wire specification is 1.85-3.05mm.

[0029] The connecting frame 7 is rotatably mounted on the fixed frame 6. The air knife body 1 is mounted on the connecting frame 7 by bolts. Bolts are installed on the top and bottom of the connecting frame 7 to clamp the air knife body 1 on the connecting frame 7.

[0030] The adjusting assembly 8 includes a rotating shaft 81 fixedly mounted on the connecting frame 7, a gear 82 fixedly mounted on the rotating shaft 81, a fixing ring 83 fixedly mounted on the fixing frame 6, and a spring 84 fixedly mounted on the inner wall of the fixing ring 83. The rotating shaft 81 is rotatably mounted on the fixing frame 6. A turntable 9 is fixedly mounted on the rotating shaft 81, and a fastening screw 10 and a rotating rod 11 are threaded onto the turntable 9. Rotating shafts 81 are fixedly mounted on both sides of the connecting frame 7, and the rotating shafts 81 are rotatably mounted in the fixing frame 6, thereby driving the connecting frame 7 and the air knife body 1 to rotate on the fixing frame 6. The rotating rod 11 drives the turntable 9 and the rotating shaft 81 to rotate. When the gear 82 on the outside is rotated, its teeth come into contact with the spring 84. Because the spring 84 is elastic, the gear 82 rotates and causes the spring 84 to deform, which makes the gear 82 rotate. When the force applied to the gear 82 is stopped, the spring 84 engages with the teeth of the gear 82, limiting the gear 82 and the rotating shaft 81, thereby determining the position of the connecting frame 7 and the air knife body 1. Finally, the fastening screw 10 on the turntable 9 is tightened. Because the turntable 9 rotates outside the fixing ring 83, the fastening screw 10 contacts and abuts against the outer wall of the fixing ring 83, limiting the rotating shaft 81 again and improving the stability of the air knife body 1.

[0031] Working Principle: The air knife body 1 is integrally molded from hot-dip galvanized material. Its internal wire passage 2 is circular with a smooth inner wall, ensuring stability when the steel wire passes through, reducing friction with the steel wire, and preventing scratches on the steel wire surface. The diameters of the first opening 3 and the second opening 4 at both ends of the air knife body 1 are designed according to the steel wire specifications, and both are conical. The internal air channel 5 includes interconnected air chambers 51 and air gaps 52. The annular air channel, as the core flow channel, is integrally molded using 3D printing technology, eliminating the airflow turbulence problems caused by welds or joints in traditional machining, ensuring the uniformity and stability of the airflow. The gas channel connects the gas source to the annular air channel and is responsible for introducing nitrogen. The design considers smooth gas flow and minimal pressure loss. By precisely controlling the nitrogen flow rate and pressure, the intensity of the annular airflow can be dynamically adjusted. Meanwhile, the 3D-printed air knife can be made with different hole diameters (6-8mm, corresponding to wire specifications of 1.85-3.05mm) according to the wire specifications, achieving one specification for one air knife. During adjustment, the rotating rod 11 drives the turntable 9 and the rotating shaft 81 to rotate, and the rotating shaft 81 drives the gear 82 to rotate. When the gear 82 rotates, the teeth contact the spring 84. Because the spring 84 is elastic, the rotation of the gear 82 will cause the spring 84 to deform. When the force applied to the gear 82 is stopped, the spring 84 is engaged with the teeth of the gear 82, realizing the limiting of the gear 82 and the rotating shaft 81, thereby determining the position of the connecting frame 7 and the air knife body 1. Finally, the fastening screw 10 on the turntable 9 is tightened. Since the turntable 9 rotates outside the fixing ring 83, the fastening screw 10 contacts and abuts against the outer wall of the fixing ring 83, limiting the rotating shaft 81 again and improving the stability of the air knife body 1.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A hot dip galvanizing air knife adjustment device comprising an air knife body (1), characterized in that, Also includes: A wire-passing hole (2) for the steel wire to pass through is provided inside the air knife body (1). A first opening (3) and a second opening (4) are provided at both ends of the air knife body (1). An air passage (5) is provided inside the air knife body (1). A fixed frame (6) supports the air knife body (1), and a connecting frame (7) is installed on the fixed frame (6) to limit the position of the air knife body (1). An adjusting component (8) for adjusting the position of the air knife body (1) is installed on the connecting frame (7).

2. A hot dip galvanizing air knife adjustment device according to claim 1, characterized in that: The air knife body (1) is designed as an integral piece of hot-dip galvanized material.

3. The air knife adjustment device for hot-dip galvanizing according to claim 1, characterized by: The wire hole (2) is circular and has a smooth inner wall.

4. The air knife adjustment device for hot-dip galvanizing according to claim 1, characterized by: The diameters of the first opening (3) and the second opening (4) are designed according to the specifications of the steel wire, and both are tapered.

5. The hot-dip galvanizing air knife adjustment device according to claim 1, characterized in that: The air passage (5) includes an air cavity (51) and an air slit (52) inside the air knife body (1), and the air cavity (51) and the air slit (52) are interconnected.

6. The hot-dip galvanizing air knife adjustment device according to claim 1, characterized in that: The connecting frame (7) is rotatably mounted on the fixed frame (6), and the air knife body (1) is mounted on the connecting frame (7) by bolts.

7. The hot-dip galvanizing air knife adjustment device according to claim 1, characterized in that: The adjustment assembly (8) includes a rotating shaft (81) fixedly mounted on a connecting frame (7), a gear (82) fixedly mounted on the rotating shaft (81), a fixing ring (83) fixedly mounted on the fixing frame (6), a spring (84) fixedly mounted on the inner wall of the fixing ring (83), and the rotating shaft (81) rotatably mounted on the fixing frame (6).

8. The hot-dip galvanizing air knife adjustment device according to claim 7, characterized in that: A turntable (9) is fixedly installed on the rotating shaft (81), and a fastening screw (10) and a rotating rod (11) are threaded onto the turntable (9).

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