Air knife adjusting device for hot-dip galvanized sheet production

Abstract

The present disclosure relates to the technical field of air knife adjusting device for hot-dip galvanized sheet production, and one embodiment of the present disclosure provides an air knife adjusting device for hot-dip galvanized sheet production, which comprises a pair of side frames, an air knife body and a connecting air nozzle, the connecting air nozzle is installed on one side of the air knife body, the air knife body is arranged between the side frames, a height adjusting assembly is arranged at the bottom of the side frame, an angle limiting assembly is arranged between the air knife body and the side frame, a bottom plate is fixed to the side end face of one side of the side frame, a pipeline clamping assembly is arranged on the bottom plate, the angle limiting assembly comprises a rotating shaft, the rotating shaft is rotatably connected in one side of the side frame, one end of the rotating shaft is provided with a limiting disc, a rectangular groove is formed in the side surface of the side frame, a pair of vertical columns are arranged in the rectangular groove, and a clamping block is sleeved on the vertical column. Through the above technical scheme, the technical problem that the existing device generally has a single structure defect in the spraying direction adjustment and is difficult to meet the fine processing needs of complex profile sheet is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of air knife adjustment devices for hot-dip galvanized sheet production, and more specifically, to an air knife adjustment device for hot-dip galvanized sheet production. Background Technology

[0002] In the field of hot-dip galvanized sheet production, the structural design of the air knife adjustment device directly affects the uniformity of the zinc layer and production adaptability. However, existing devices generally have the structural defect of single spray direction adjustment, which makes it difficult to meet the fine processing needs of complex contour sheets.

[0003] Traditional air knife adjustment devices have significant structural drawbacks: First, the spray angle adjustment mechanism is rudimentary, often employing a single-axis rotating nozzle installation structure. This allows for fine-tuning of the angle only within a single plane. When processing galvanized sheets with complex contours such as curved or wavy surfaces, the airflow direction cannot be dynamically adjusted in multiple dimensions to accommodate the surface undulations. Fixed nozzles can only spray along a fixed axis, resulting in insufficient airflow coverage in concave areas and excessive airflow impact in convex areas, leading to zinc residue and uneven coating thickness. Second, they lack a contour-adaptive adjustment structure. The relative position between the air knife and the workpiece in existing devices is fixed, lacking a real-time feedback adjustment component based on the sheet contour. When the galvanized sheet deforms due to temperature changes or exhibits thickness variations, the air knife's spray angle cannot be automatically adjusted. For example, some devices use bolt-positioned upper and lower base structures, requiring manual screw tightening during adjustment. The angle is fixed by engaging triangular positioning blocks. This mechanical positioning method is not only cumbersome but also cannot adapt to the real-time deformation of the sheet during production. Third, the air knife installation structure and the injection system are too integrated. The nozzle and the air chamber are fixedly connected by a rigid pipe. When the injection direction needs to be adjusted, the entire air knife assembly needs to be moved, which not only increases the difficulty of adjustment, but may also cause airflow pressure fluctuations due to pipe displacement, affecting laminar flow stability.

[0004] Therefore, improvements were made to address the aforementioned shortcomings. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide an air knife adjustment device for hot-dip galvanized sheet production, which solves the technical problem that existing devices generally have a single spray direction adjustment, making it difficult to meet the fine processing requirements of complex contour plates.

[0006] According to one aspect, at least one embodiment of this disclosure provides an air knife adjustment device for hot-dip galvanized sheet production, comprising:

[0007] A pair of side frames, an air knife body, and a connecting nozzle, wherein the connecting nozzle is installed on one side of the air knife body, and the air knife body is arranged laterally between the side frames;

[0008] A height adjustment assembly is disposed at the bottom of the side frame;

[0009] An angle limiting component is disposed between the air knife body and the side frame;

[0010] A base plate and a pipe clamping assembly, wherein the base plate is fixed to one side end face of the side frame, and the pipe clamping assembly is disposed on the base plate;

[0011] The angle limiting component includes a rotating shaft, which is rotatably connected to one side of the side frame. One end of the rotating shaft is provided with a limiting plate. A rectangular groove is opened on the side surface of the side frame, and a pair of columns are provided in the rectangular groove. A locking block is fitted on the column.

[0012] As a further technical solution, the upper end face of the card block is provided with a card slot, the column is fitted with a support spring, the side surface of the side frame is provided with an ear plate, and the bottom surface of the card block is provided with a screw.

[0013] As a further technical solution, the screw is movably connected inside the ear plate, and a support nut is screwed onto the screw by means of threads, and the support nut slides against the upper surface of the ear plate.

[0014] As a further technical solution, the pipe clamping assembly includes a support, which is disposed on the surface of the base plate. A pressure sleeve is fitted on the support, and a pair of connecting rods are disposed at the bottom of the pressure sleeve. The lower ends of the connecting rods pass through the base plate, and a fixing nut is screwed to the lower ends of the connecting rods.

[0015] As a further technical solution, the height adjustment assembly includes a pair of fixed plates, the surface of which is provided with a hydraulic cylinder, the output end of which is fixedly connected to the bottom of the side frame, and the side frame is wrapped around the outside of the hydraulic cylinder.

[0016] As a further technical solution, stabilizing grooves are provided on both sides of the side frame, and a pair of stabilizing plates are provided on the surface of the base plate. The stabilizing plates slide against the stabilizing grooves, and a number of fixing holes are provided on the surface of the base plate.

[0017] As a further technical solution, both the card slot and the circumference of the limiting disk have a toothed structure.

[0018] As a further technical solution, the air knife body can be rotated 360° around a rotating shaft.

[0019] The beneficial effects of the embodiments disclosed herein are as follows:

[0020] 1. In this disclosure, the angle limiting component connects the air knife body and the side frame through a rotating shaft, allowing the air knife body to rotate around the rotating shaft. The positioning groove on the edge of the limiting plate engages with the slot of the locking block to achieve angle locking. The support spring keeps the locking block tightly against the limiting plate. The screw and support nut facilitate the control of the locking block's lifting and lowering. The toothed structure surface enhances the limiting strength, solving the problem of the single spray direction adjustment in existing devices. The air knife spray angle can be adjusted according to the profile of the plate, allowing the airflow to cover complex profiles and improving the uniformity of the zinc layer.

[0021] 2. In this disclosure, the height adjustment component uses a hydraulic cylinder to extend and retract to drive the side frame to move up and down. The stabilizing groove and the stabilizing plate slide together to ensure the stability of the side frame's lifting and lowering. The fixing holes on the bottom plate ensure that the device is firmly installed. The vertical height of the air knife body can be precisely adjusted according to the thickness of the hot-dip galvanized sheet or process requirements, so that the air knife is in the optimal working position, avoiding poor zinc molten metal blowing effect due to improper height, and improving the adaptability of hot-dip galvanizing production.

[0022] 3. In this disclosure, the support of the pipe clamping assembly supports the air pipe connector, and the pressure sleeve is pressed onto the support through the connecting rod and the fixing nut. The anti-slip structure on the inner wall of the pressure sleeve increases the friction force, which can clamp air pipes of different diameters, prevent the air pipe from falling off due to excessive air pressure, ensure the air knife air supply system is sealed and stable, avoid air pressure fluctuations from affecting laminar flow stability, ensure the surface quality of hot-dip galvanized sheet, and solve the problem of loose air pipe connection in existing devices. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0024] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0025] Figure 2 This is an isometric drawing of the present disclosure;

[0026] Figure 3 This is an isometric drawing from another perspective of this disclosure;

[0027] Figure 4 Appendix to this disclosure Figure 2 Enlarged view of part A in the middle;

[0028] In the diagram: 1. Side frame; 2. Air knife body; 3. Connecting air nozzle; 4. Base plate; 5. Angle limiting assembly; 5-1. Rotating shaft; 5-2. Limiting plate; 5-3. Rectangular groove; 5-4. Column; 5-5. Locking block; 5-6. Locking slot; 5-7. Support spring; 5-8. Ear plate; 5-9. Screw; 5-10. Support nut; 6. Pipe clamping assembly; 6-1. Support; 6-2. Pressure sleeve; 6-3. Connecting rod; 6-4. Fixing nut; 7. Height adjustment assembly; 7-1. Fixing plate; 7-2. Hydraulic cylinder; 7-3. Stabilizing groove; 7-4. Stabilizing plate; 7-5. Fixing hole. Detailed Implementation

[0029] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0032] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] like Figures 1-4 As shown, it illustrates an air knife adjustment device for hot-dip galvanized sheet production according to an embodiment of the present disclosure, comprising:

[0036] A pair of side frames 1, an air knife body 2, and a connecting nozzle 3, wherein the connecting nozzle 3 is installed on one side of the air knife body 2, and the air knife body 2 is arranged laterally between the side frames 1;

[0037] Height adjustment component 7, which is disposed at the bottom of the side frame 1;

[0038] Angle limiting component 5, wherein the angle limiting component 5 is disposed between the air knife body 2 and the side frame 1;

[0039] The base plate 4 and the pipe clamping assembly 6 are provided. The base plate 4 is fixed to the side end face of the side frame 1 on one side, and the pipe clamping assembly 6 is disposed on the base plate 4.

[0040] The angle limiting component 5 includes a rotating shaft 5-1, which is rotatably connected to one side of the side frame 1. A limiting plate 5-2 is provided at one end of the rotating shaft 5-1. A rectangular groove 5-3 is opened on the side surface of the side frame 1. A pair of columns 5-4 are provided in the rectangular groove 5-3. A locking block 5-5 is fitted on the column 5-4. A locking groove 5-6 is opened on the upper end face of the locking block 5-5. A support spring 5-7 is fitted on the column 5-4. An ear plate 5-8 is provided on the side surface of the side frame 1. A screw 5-9 is provided on the bottom surface of the locking block 5-5. The screw 5-9 is movably fitted into the ear plate 5-8. A support nut 5-10 is screwed onto the screw 5-9 by thread. The support nut 5-10 slides against the upper surface of the ear plate 5-8.

[0041] In some examples, an angle limiting component 5 is designed to achieve precise adjustment of the angle of the air knife body 2. This component centers on a rotating shaft 5-1 rotatably connected within the side frame 1. The air knife body 2 is connected to the side frame 1 via the rotating shaft 5-1 and can rotate around its axis to adjust the spray angle. Several positioning grooves are formed on the edge of the limiting plate 5-2 at one end of the rotating shaft 5-1. Under the action of the support spring 5-7, the upper end of the locking block 5-5 in the rectangular groove 5-3 on the surface of the side frame 1 can engage with the positioning groove of the limiting plate 5-2 via its upper slot 5-6, thus locking the angle. When angle adjustment is required, loosen the support nut 5-10 and lift the locking block 5-5 to disengage it from the limiting plate 5-2. The air knife body 2 can then be rotated to the desired angle. The locking block 5-5 is then released again, allowing it to re-engage with the corresponding positioning groove under the spring force. Finally, the support nut 5-10 is tightened to fix the position of the locking block 5-5. The cooperation between the column 5-4 and the ear plate 5-8 provides vertical guidance for the locking block 5-5. The threaded connection between the screw 5-9 and the support nut 5-10 makes it easy for the operator to apply external force to control the lifting and lowering of the locking block 5-5. Through the rotation adjustment of the rotating shaft 5-1 and the positioning cooperation between the locking block 5-5 and the limiting plate 5-2, the angle limiting component 5 can accurately control the spray angle of the air knife body 2, ensuring that the airflow direction is at the best angle with the surface of the hot-dip galvanized sheet, and improving the uniformity of the zinc layer.

[0042] like Figures 1-4 As shown in the figure, the pipeline clamping assembly 6 proposed in this embodiment includes a support 6-1, the support 6-1 is disposed on the surface of the base plate 4, a pressure sleeve 6-2 is fitted on the support 6-1, a pair of connecting rods 6-3 are provided at the bottom of the pressure sleeve 6-2, the lower end of the connecting rods 6-3 passes through the base plate 4, and a fixing nut 6-4 is screwed to the lower end of the connecting rods 6-3 by thread.

[0043] In some examples, a tubing clamping assembly 6 is designed to prevent the endotracheal tube from dislodging due to excessive air pressure. This assembly uses a support 6-1 on the surface of the base plate 4 as its basic support structure. The support 6-1 supports the endotracheal tube connector, and a clamping sleeve 6-2 above it can be pressed axially along the endotracheal tube. A pair of connecting rods 6-3 at the bottom of the clamping sleeve 6-2 pass through the base plate 4 and are securely connected to the base plate 4 via a lower fixing nut 6-4. When clamping the endotracheal tube is required, the endotracheal tube connector is placed on the support 6-1, the clamping sleeve 6-2 is put on and pressed down, so that the inner wall of the clamping sleeve 6-2 fits tightly against the outer wall of the endotracheal tube. Then, the fixing nut 6-4 is tightened. The tension of the connecting rods 6-3 presses the clamping sleeve 6-2 firmly onto the support 6-1, forming a clamping force on the endotracheal tube. The inner wall of the clamping sleeve 6-2 is usually provided with anti-slip textures or a rubber pad to increase friction and prevent the endotracheal tube from loosening and dislodging even under high air pressure. The combination structure of support 6-1 and pressure sleeve 6-2 is compatible with air pipes of different diameters. By replacing pressure sleeve 6-2 and support 6-1 of different specifications, the clamping requirements of various air pipes can be met, ensuring the sealing and stability of the air knife supply system and avoiding air knife pressure fluctuations caused by air pipe detachment, which would affect the surface quality of hot-dip galvanized sheet.

[0044] like Figures 1-4 As shown in the figure, the height adjustment component 7 in this embodiment includes a pair of fixing plates 7-1. A hydraulic cylinder 7-2 is provided on the surface of the fixing plate 7-1. The output end of the hydraulic cylinder 7-2 is fixedly connected to the bottom of the side frame 1. The side frame 1 is wrapped around the hydraulic cylinder 7-2. Stabilizing grooves 7-3 are provided on both sides of the side frame 1. A pair of stabilizing plates 7-4 are provided on the surface of the bottom plate 4. The stabilizing plates 7-4 are slidably attached to the stabilizing grooves 7-3. A plurality of fixing holes 7-5 are provided on the surface of the bottom plate 4.

[0045] In some examples, a height adjustment component 7 is designed to allow for flexible adjustment of the vertical height of the air knife body 2. This component is supported by a fixed plate 7-1 on the surface of the base plate 4. The output end of a hydraulic cylinder 7-2 mounted on the fixed plate 7-1 is fixedly connected to the bottom of the side frame 1. The extension and retraction of the hydraulic cylinder 7-2 moves the side frame 1 up and down, thereby adjusting the vertical height of the air knife body 2. The stabilizing grooves 7-3 on both sides of the side frame 1 slide against the stabilizing plate 7-4 on the surface of the base plate 4, providing guidance for the lifting and lowering of the side frame 1 and preventing it from tilting or shifting during movement. The fixing holes 7-5 on the surface of the base plate 4 can be bolted to the ground or equipment base to ensure the installation stability of the entire adjustment device. When the air knife height needs to be adjusted, the hydraulic cylinder 7-2 is activated, its piston rod extends or retracts, moving the side frame 1 up and down along the stabilizing plate 7-4 to the target position. Then, the hydraulic cylinder 7-2 is stopped, and the position is locked by the hydraulic system.

[0046] The height adjustment component 7 is driven by the hydraulic cylinder 7-2 and guided by the stabilizing groove 7-3 and the stabilizing plate 7-4 to achieve precise adjustment of the vertical height of the air knife body 2. It can quickly adjust the air knife to the optimal working height according to the change of hot-dip galvanized sheet thickness or production process requirements to ensure the air knife airflow has a good effect on removing zinc liquid.

[0047] For example, such as Figure 4 As shown, both the card slot 5-6 and the limiting disk 5-2 have toothed structures on their circumference.

[0048] In some examples, the toothed structural surface allows for a tight fit after bonding, resulting in higher limiting strength and preventing slippage that could lead to loosening.

[0049] For example, such as Figure 1 As shown, the air knife body 2 can be rotated 360° around the rotating shaft 5-1.

[0050] In some examples, the air knife body 2 can be stably rotated to any angle by the stable connection of the rotating shaft 5-1 and the limiting plate 5-2, which is highly flexible and can adapt to a variety of installation methods.

[0051] In actual use: The base plate 4 is installed on the equipment through the fixing hole 7-5. The stabilizing plate 7-4 is inserted into the stabilizing groove 7-3 of the side frame 1. The fixing plate 7-1 of the height adjustment component 7 is fixed on the base plate 4. The output end of the hydraulic cylinder 7-2 is fixed to the bottom of the side frame 1. The side frame 1 encloses the hydraulic cylinder 7-2. The air knife body 2 is rotatably connected to the side frame 1 through the rotating shaft 5-1. The connecting air nozzle 3 is installed on one side of the air knife body 2. The limiting plate 5-2 of the angle limiting component 5 is fixed to one end of the rotating shaft 5-1. The column 5-4 in the rectangular groove 5-3 is fitted with a locking block 5-5 and a support spring 5-7. The screw 5- of the locking block 5-5 is... 9 passes through the ear plate 5-8, and the support nut 5-10 is screwed onto the screw 5-9. The bracket 6-1 of the pipe clamping assembly 6 is fixed on the base plate 4. The pressure sleeve 6-2 is installed on the bracket 6-1 through the connecting rod 6-3 and the fixing nut 6-4. When in use, the hydraulic cylinder 7-2 adjusts the height of the side frame 1, loosens the support nut 5-10 to lift the locking block 5-5, rotates the air knife body 2 to the required angle, loosens the locking block 5-5 so that its slot 5-6 engages with the toothed structure of the limiting plate 5-2, tightens the support nut 5-10 to fix it, the air pipe is placed on the bracket 6-1, and the pressure sleeve 6-2 is clamped through the connecting rod 6-3 and the fixing nut 6-4.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A gas-knife adjusting device for hot-dip galvanizing sheet production, characterized by, include: A pair of side frames (1), an air knife body (2) and a connecting nozzle (3), wherein the connecting nozzle (3) is installed on one side of the air knife body (2) and the air knife body (2) is arranged laterally between the side frames (1); A height adjustment assembly (7) is disposed at the bottom of the side frame (1); Angle limiting component (5) is disposed between the air knife body (2) and the side frame (1); The base plate (4) and the pipe clamping assembly (6) are fixed on the side end face of the side frame (1) on one side, and the pipe clamping assembly (6) is disposed on the base plate (4). The angle limiting component (5) includes a rotating shaft (5-1), which is rotatably connected to one side of the side frame (1). One end of the rotating shaft (5-1) is provided with a limiting plate (5-2). A rectangular groove (5-3) is opened on the side surface of the side frame (1). A pair of columns (5-4) are provided in the rectangular groove (5-3). A locking block (5-5) is fitted on the column (5-4).

2. The air knife adjusting device for a hot-dip galvanizing line according to claim 1, characterized by The upper end face of the card block (5-5) is provided with a card slot (5-6), the column (5-4) is fitted with a support spring (5-7), the side surface of the side frame (1) is provided with an ear plate (5-8), and the bottom surface of the card block (5-5) is provided with a screw (5-9).

3. The air knife adjusting device for a hot-dip galvanizing line according to claim 2, characterized by The screw (5-9) is movably connected inside the ear plate (5-8), and a support nut (5-10) is screwed onto the screw (5-9) by means of threads. The support nut (5-10) slides against the upper surface of the ear plate (5-8).

4. The air knife adjusting device for a hot-dip galvanizing line according to claim 1, characterized by The pipe clamping assembly (6) includes a support (6-1), which is disposed on the surface of the base plate (4). A pressure sleeve (6-2) is fitted on the support (6-1). A pair of connecting rods (6-3) are provided at the bottom of the pressure sleeve (6-2). The lower end of the connecting rod (6-3) passes through the base plate (4), and a fixing nut (6-4) is screwed to the lower end of the connecting rod (6-3) by thread.

5. The air knife adjusting device for a hot-dip galvanizing line according to claim 1, characterized by The height adjustment assembly (7) includes a pair of fixing plates (7-1), and a hydraulic cylinder (7-2) is provided on the surface of the fixing plate (7-1). The output end of the hydraulic cylinder (7-2) is fixedly connected to the bottom of the side frame (1), and the side frame (1) is wrapped around the outside of the hydraulic cylinder (7-2).

6. The air knife adjusting device for a hot-dip galvanizing line according to claim 5, characterized by The side frame (1) has stabilizing grooves (7-3) on both sides, and the bottom plate (4) has a pair of stabilizing plates (7-4) on its surface. The stabilizing plates (7-4) slide against the stabilizing grooves (7-3), and the bottom plate (4) has several fixing holes (7-5) on its surface.

7. The air knife adjusting device for a hot-dip galvanizing line according to claim 2, characterized by Both the card slot (5-6) and the limiting disk (5-2) have toothed structures on their circumference.

8. The air knife adjusting device for a hot-dip galvanizing line according to claim 1, characterized by The air knife body (2) can rotate 360° around the axis of the rotating shaft (5-1).

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