A blowing device for improving magnesium oxide coating edge shrinkage of silicon steel surface

Abstract

This utility model belongs to the field of grain-oriented silicon steel production technology, specifically relating to an air blowing device for improving edge shrinkage of magnesium oxide coating on silicon steel surfaces. The air blowing device includes a support frame and an air blowing assembly. The support frame is mounted on a magnesium oxide coating machine. The air blowing assembly includes a lower support rod, an upper support rod, an airflow pipe, and a nozzle. The lower end of the lower support rod is slidably mounted on the support frame. The two ends of the upper support rod are hinged to the upper end of the lower support rod and the nozzle, respectively. The airflow pipe passes through the upper support rod and connects to the air source and the nozzle. The nozzle has at least two air holes at its outlet end, and the nozzle is equipped with an airflow regulator and an air hole number regulator. This air blowing device effectively solves the edge shrinkage phenomenon that occurs at the edge of the steel strip after magnesium oxide coating, ensuring the quality of magnesium oxide coating at the edge of the steel strip, preventing adhesion, and improving production efficiency and steel strip yield.

Description

Technical Field

[0001] This utility model belongs to the field of grain-oriented silicon steel production technology, specifically relating to an air blowing device for improving the edge shrinkage of magnesium oxide coating on silicon steel surface. Background Technology

[0002] The production process of grain-oriented silicon steel is complex, with strict manufacturing techniques, long procedures, and numerous influencing factors. During production, after the steel strip is coated with magnesium oxide, edge shrinkage occurs after it exits the drying furnace. This is mainly because the magnesium oxide solution at the edge of the steel strip is still in a flowing state when it first enters the drying furnace, and the magnesium oxide solution at the edge of the steel strip is disturbed by the airflow, causing edge shrinkage. When edge shrinkage is severe, it not only results in greater edge loss of the finished product, but also causes the steel coil to stick together at the edges during high-temperature annealing in the CB furnace (high-temperature annealing furnace), affecting production efficiency and yield. Utility Model Content

[0003] This invention aims to solve the above-mentioned problems by providing an air blowing device to improve the edge shrinkage of magnesium oxide coating on silicon steel. It can effectively solve the edge shrinkage phenomenon that exists at the edge of the steel strip after magnesium oxide coating and exiting the drying furnace, ensure the quality of magnesium oxide coating at the edge of the steel strip, avoid adhesion, and improve production efficiency and steel strip yield.

[0004] According to the technical solution of this utility model, the air blowing device for improving the edge shrinkage of magnesium oxide coating on silicon steel surface includes a bracket and an air blowing assembly. The bracket is installed on a magnesium oxide coating machine. The air blowing assembly includes a lower support rod, an upper support rod, an airflow pipe and a nozzle. The lower end of the lower support rod is slidably installed on the bracket. The two ends of the upper support rod are respectively hinged to the upper end of the lower support rod and the nozzle. The airflow pipe passes through the upper support rod and connects the air source and the nozzle.

[0005] The nozzle has at least two air holes at its outlet end; the nozzle has a mounting hole in the middle, and an airflow regulating component is rotatably installed in the mounting hole. The airflow regulating component has several radial through holes, and the interior of the airflow regulating component is hollow and has an air hole number regulating component installed. The length of the air hole number regulating component within the airflow regulating component is adjustable.

[0006] Furthermore, there are 1-4 air blowing components, which are disposed on the edge of the silicon steel strip.

[0007] Furthermore, the bracket is provided with a slide rail, the direction of which is parallel to the width direction of the silicon steel strip, and one end of the lower support rod is slidably mounted on the slide rail using a slider.

[0008] Furthermore, the lengths of both the lower and upper support rods are adjustable.

[0009] Furthermore, the two ends of the upper support rod are respectively hinged to the upper end of the lower support rod and the nozzle via connectors.

[0010] Furthermore, the area of ​​effect of the airflow ejected from the nozzle is below the junction of the lower coating roller and the silicon steel strip or above the junction of the upper coating roller and the silicon steel strip.

[0011] Furthermore, the angle between the direction of the airflow ejected from the nozzle and the surface of the silicon steel strip is 0°-60°, and the angle between the nozzle and the edge of the silicon steel strip is 0°-60°.

[0012] Furthermore, the nozzle has single or multiple rows of air holes, with each row having at least two air holes, and the diameter of the air holes being 0.1mm-10mm.

[0013] Furthermore, the through holes on the airflow regulating component are in a single row or multiple rows, and the diameter of the through holes is 0.1mm-10mm.

[0014] Furthermore, the air hole number adjusting component includes a column and a stop block disposed at one end of the column, the column being inserted into the airflow adjusting component.

[0015] Compared with the prior art, the technical solution of this utility model has the following advantages: This utility model installs the air blowing device on the magnesium oxide coating machine, and blows air into the coating roller area below or above the junction of the coating roller and the steel strip, so that the liquid between the coating roller and the edge of the steel strip forms a solution accumulation area. This solution accumulation area can allow more magnesium oxide solution to be applied to the edge of the steel strip, thereby improving edge shrinkage and ensuring the quality of magnesium oxide coating on the edge of the steel strip. The air blowing device of this utility model can adjust the nozzle position, the size of the air holes on the nozzle, the number of air holes on the nozzle, and the airflow direction, so that the liquid between the coating roller and the edge of the steel strip does not form a sawtooth solution accumulation area, which effectively avoids the formation of water ripples on the edge of the steel strip while improving edge shrinkage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the air blowing device of this utility model.

[0017] Figure 2 for Figure 1 Side view.

[0018] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0019] Figure 4 for Figure 1 Top view.

[0020] Figure 5 for Figure 4 Enlarged view of the structure at point B in the middle.

[0021] Figure 6 This is a schematic diagram of the air blowing assembly of this utility model.

[0022] Figure 7 This is a schematic diagram of the nozzle structure of this utility model.

[0023] Figure 8 for Figure 7 The top view shows the airflow regulator and the number of air vents regulator, which have been removed.

[0024] Figure 9 This is a schematic diagram of the airflow regulating component of this utility model.

[0025] Figure 10 This is a component for adjusting the number of air holes according to the present invention.

[0026] Explanation of reference numerals in the attached drawings: 1-Bracket, 2-Lower support rod, 3-Upper support rod, 4-Airflow duct, 5-Nozzle, 5.1-Air hole, 5.2-Mounting hole, 6-Airflow regulating component, 6.1-Through hole, 7-Air hole quantity regulating component, 8-Silicon steel strip, 9-Connector, 10-Magnesium oxide coating machine, 10.1-Coating machine frame, 10.2-Upper coating roller, 10.3-Lower coating roller, 10.4-Coating liquid tank. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0028] like Figure 1-5 As shown, this utility model provides an air blowing device to improve the edge shrinkage of magnesium oxide coating on silicon steel surface. It is installed on magnesium oxide coating machine 10 and includes a bracket 1 and an air blowing assembly. The magnesium oxide coating machine 10 includes a coating machine frame 10.1 and upper coating roller 10.2, lower coating roller 10.3 and coating liquid tank 10.4 installed on the coating machine frame 10.1.

[0029] The bracket 1 is installed on the frame 10.1 of the magnesium oxide coating machine 10, located on the side of the silicon steel strip 8 that has already been coated with magnesium oxide. There are 1-4 air blowing components, the number of which can be freely selected according to the edge shrinkage of the four sides of the steel strip (upper edge on the operating side, upper edge on the transmission side, lower edge on the operating side, and lower edge on the transmission side). In the illustration, there are two air blowing components, located on the lower edge of the operating side and the lower edge of the transmission side. It can be imagined that when there is edge shrinkage on the upper surface of the silicon steel strip 8, a set of air blowing components can be installed above each edge, for a total of 4 air blowing components.

[0030] like Figure 6As shown, each air-blowing assembly includes a lower support rod 2, an upper support rod 3, an airflow duct 4, and a nozzle 5. The lower end of the lower support rod 2 is slidably mounted on the bracket 1. The two ends of the upper support rod 3 are hinged to the upper end of the lower support rod 2 and the nozzle 5, respectively. The airflow duct 4 passes through the upper support rod 3, connecting the air source and the nozzle 5. In some embodiments, the air source pressure is 0.15-0.8 MPa, and the flow rate is 0.5-3.5 m³ / h. 3 / h.

[0031] It is conceivable that, to facilitate the sliding of the lower support rod 2, a slide rail is provided on the bracket 1, the direction of which is parallel to the width direction of the silicon steel strip 8. One end of the lower support rod 2 is slidably mounted on the slide rail using a slider. The two ends of the upper support rod 3 are respectively hinged to the upper end of the lower support rod 2 and the nozzle 5 via connectors 9. The connectors 9 can be selected from universal joints, ball joints, etc. The airflow duct 4 can be selected from plastic hoses, and the airflow ducts 4 of the air blowing components on both sides can be connected to the air source through a main pipe.

[0032] In some preferred embodiments, the lengths of both the lower support rod 2 and the upper support rod 3 are adjustable, for example, telescopic rods can be used. By adjusting the length of the lower support rod 2, the height of the nozzle 5 can be adjusted; by adjusting the length of the support rod 3, the distance between the nozzle 5 and the upper coating roller 10.2 or the lower coating roller 10.3 can be adjusted.

[0033] By adjusting the lengths of the lower support rod 2 and the upper support rod 3, as well as the angle between the upper support rod 3 and the nozzle 5, the area of ​​action of the airflow ejected from the nozzle 5 is made to be below the junction of the lower coating roller and the silicon steel strip or above the junction of the upper coating roller and the silicon steel strip. At the same time, the angle α between the airflow direction and the surface of the silicon steel strip is controlled to be 0°-60°, and the angle β between the airflow direction and the edge of the silicon steel strip is controlled to be 0°-60°, thereby avoiding the formation of water ripples on the edge of the steel strip.

[0034] like Figure 7-10 As shown, the nozzle 5 is flat and has at least two air holes 5.1 at its outlet end. The diameter of the air holes 5.1 can be set to 0.1mm-10mm. It can be imagined that, depending on the actual needs, the air holes 5.1 can be set to a single row or multiple rows, with at least two air holes 5.1 in each row.

[0035] A mounting hole 5.2 is formed in the center of the nozzle 5. An airflow regulating component 6 is rotatably mounted in the mounting hole 5.2. The airflow regulating component 6 has several radial through holes 6.1, the diameter of which can be set from 0.1mm to 10mm. It can be imagined that, depending on actual needs, the through holes 6.1 on the airflow regulating component 6 can be in a single row or multiple rows. By rotating the airflow regulating component 6, the thickness of the airflow can be adjusted to cope with different degrees of edge contraction.

[0036] The airflow regulating component 6 is hollow inside and has an air hole number adjusting component 7 installed. The length of the air hole number adjusting component 7 within the airflow regulating component 6 is adjustable, thereby controlling the number of through holes 6.1 on the airflow regulating component 6, that is, the number of air holes 5.1 exiting in the corresponding area, to cope with the shrinkage phenomenon of different widths. Specifically, the air hole number adjusting component 7 includes a column 7.1 and a stop block 7.2 set at one end of the column 7.1, and the column 7.1 is inserted into the airflow regulating component 6.

[0037] In use, the air blowing device of this utility model adjusts the position of the lower support rod 2, the length of the lower support rod 2 and the upper support rod 3, and the angle between the upper support rod 3 and the nozzle 5 in the air blowing assembly to control the airflow direction; adjust the airflow regulating component 6 and the air hole number regulating component 7 to control the airflow size and the number of air holes, and then blow air. When multiple air blowing components are set, each air blowing component is adjusted individually to adapt to the edge shrinkage of its corresponding side.

[0038] Taking a silicon steel strip with a speed of 110 m / min and a width of 1210 mm as an example, without the air blowing device of this utility model, the edge shrinkage width is 6-7 mm. With the air blowing device of this utility model, the edge shrinkage is significantly improved, and there are no water ripples on the edge.

[0039] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An air blowing device for improving the edge shrinkage of magnesium oxide coating on silicon steel surface, characterized in that, The device includes a bracket (1) and an air blowing assembly. The bracket (1) is mounted on a magnesium oxide coating machine (10). The air blowing assembly includes a lower support rod (2), an upper support rod (3), an airflow pipe (4), and a nozzle (5). The lower end of the lower support rod (2) is slidably mounted on the bracket (1). The two ends of the upper support rod (3) are respectively hinged to the upper end of the lower support rod (2) and the nozzle (5). The airflow pipe (4) passes through the upper support rod (3) and connects the air source and the nozzle (5). The nozzle (5) has at least two air holes (5.1) at its outlet end. The nozzle (5) has a mounting hole (5.2) in the middle. An airflow regulator (6) is rotatably installed in the mounting hole (5.2). The airflow regulator (6) has several radial through holes (6.1). The airflow regulator (6) is hollow inside and has an air hole number adjustment component (7) installed inside. The length of the air hole number adjustment component (7) inside the airflow regulator (6) can be adjusted.

2. The air blowing device as described in claim 1, characterized in that, The air blowing assembly consists of 1-4 units, which are located on the edge of the silicon steel strip.

3. The air blowing device as described in claim 1, characterized in that, The bracket (1) is provided with a slide rail, the direction of which is parallel to the width direction of the silicon steel strip. One end of the lower support rod (2) is slidably mounted on the slide rail using a slider.

4. The air blowing device as described in claim 1, characterized in that, The lengths of both the lower support rod (2) and the upper support rod (3) are adjustable.

5. The air blowing device as described in claim 1, characterized in that, The two ends of the upper support rod (3) are hinged to the upper end of the lower support rod (2) and the nozzle (5) respectively through the connector (9).

6. The air blowing device as claimed in claim 1, characterized in that, The area of ​​action of the airflow ejected from the nozzle (5) is below the junction of the lower coating roller and the silicon steel strip or above the junction of the upper coating roller and the silicon steel strip.

7. The air blowing device as described in claim 1 or 6, characterized in that, The direction of the airflow ejected from the nozzle (5) is 0°-60° with the surface of the silicon steel strip and 0°-60° with the edge of the silicon steel strip.

8. The air blowing device as claimed in claim 1, characterized in that, The nozzle (5) has a single or multiple rows of air holes (5.1), with each row having at least two air holes (5.1) and the diameter of the air holes (5.1) being 0.1 mm to 10 mm.

9. The air blowing device as claimed in claim 1, characterized in that, The through holes (6.1) on the airflow regulating component (6) are in a single row or multiple rows, and the diameter of the through holes (6.1) is 0.1mm-10mm.

10. The air blowing device as claimed in claim 1, characterized in that, The air hole number adjustment component (7) includes a column (7.1) and a stop block (7.2) disposed at one end of the column (7.1), the column (7.1) being inserted into the airflow adjustment component (6).

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